WorldWideScience

Sample records for case study approach

  1. Rebranding: a Case Study Approach

    OpenAIRE

    Size, Maria

    2005-01-01

    The primary objective of this study is to explore how and why companies implement rebranding campaigns. The study stemmed from a realisation by the author that the area of rebranding is very much under-researched academically although anecdotal evidence indicates and increase in the occurrence of the phenomenon in recent years. Therefore the purpose of this research is to add to the insufficient body of literature on rebranding through exploring it from a corporate perspective. The two chapte...

  2. Sustainable Design Approach: A case study of BIM use

    Directory of Open Access Journals (Sweden)

    Abdelhameed Wael

    2017-01-01

    The paper describes the methodology of this design approach through BIM strategies adopted in design creation. Case studies of architectural designs are used to highlight the details and benefits of this proposed approach.

  3. An alternative approach for socio-hydrology: case study research

    Science.gov (United States)

    Mostert, Erik

    2018-01-01

    Currently the most popular approach in socio hydrology is to develop coupled human-water models. This article proposes an alternative approach, qualitative case study research, involving a systematic review of (1) the human activities affecting the hydrology in the case, (2) the main human actors, and (3) the main factors influencing the actors and their activities. Moreover, this article presents a case study of the Dommel Basin in Belgium and the Netherlands, and compares this with a coupled model of the Kissimmee Basin in Florida. In both basins a pendulum swing from water resources development and control to protection and restoration can be observed. The Dommel case study moreover points to the importance of institutional and financial arrangements, community values, and broader social, economic, and technical developments. These factors are missing from the Kissimmee model. Generally, case studies can result in a more complete understanding of individual cases than coupled models, and if the cases are selected carefully and compared with previous studies, it is possible to generalize on the basis of them. Case studies also offer more levers for management and facilitate interdisciplinary cooperation. Coupled models, on the other hand, can be used to generate possible explanations of past developments and quantitative scenarios for future developments. The article concludes that, given the limited attention they currently get and their potential benefits, case studies deserve more attention in socio-hydrology.

  4. Teaching Grade 5 Life Science with a Case Study Approach

    Science.gov (United States)

    Olgun, Ozlem Sila; Adali, Belgin

    2008-01-01

    The main purpose of this study was to investigate the effects of a case study approach on students' achievement and attitudes towards viruses, bacteria, fungi, and protista. Fifth-grade students (N = 88) from two different classes were involved in the study. One intact class was assigned as the experimental group, whereas the other intact class…

  5. Evolution of Terrorist Network using Clustered approach: A Case study

    DEFF Research Database (Denmark)

    Nizamani, Sarwat; Memon, Nasrullah

    2011-01-01

    In the paper we present a cluster based approach for terrorist network evolution. We have applied hierarchical agglomerative clustering approach to 9/11 case study. We show that, how individual actors who are initially isolated from each other are converted in small clusters and result in a fully...... evolved network. This method of network evolution can help intelligence security analysts to understand the structure of the network....

  6. Case studies approach for an undergraduate astrobiology course

    Science.gov (United States)

    Burko, Lior M.; Enger, Sandra

    2013-04-01

    Case studies is a well known and widely used method in law schools, medical schools, and business schools, but relatively little used in physics or astronomy courses. We developed an astrobiology course based strongly on the case studies approach, and after teaching it first at the University of Alabama in Huntsville, we have adapted it and are now teaching it at Alabama A&M University, a HBCU. The case studies approach uses several well tested and successful teaching methods - including group work, peer instruction, current interest topics, just-in-time teaching, &c. We have found that certain styles of cases are more popular among students than other styles, and will revise our cases to reflect such student preferences. We chose astrobiology -- an inherently multidisciplinary field -- because of the popularity of the subject matter, its frequent appearance in the popular media (news stories about searches for life in the universe, the discovery of Earth-like exoplanets, etc, in addition to SciFi movies and novels), and the rapid current progress in the field. In this talk we review briefly the case studies method, the styles of cases used in our astrobiology course, and student response to the course as found in our assessment analysis.

  7. Higher Education Provision Using Systems Thinking Approach--Case Studies

    Science.gov (United States)

    Dhukaram, Anandhi Vivekanandan; Sgouropoulou, Cleo; Feldman, Gerald; Amini, Ardavan

    2018-01-01

    The purpose of this paper is to highlight the complexities involved in higher education provision and how systems thinking and socio-technical systems (STS) thinking approach can be used to understand the education ecosystem. Systems thinking perspective is provided using two case studies: the development of European Learner Mobility (EuroLM)…

  8. Advanced language modeling approaches, case study: Expert search

    NARCIS (Netherlands)

    Hiemstra, Djoerd

    2008-01-01

    This tutorial gives a clear and detailed overview of advanced language modeling approaches and tools, including the use of document priors, translation models, relevance models, parsimonious models and expectation maximization training. Expert search will be used as a case study to explain the

  9. Case Studies Approach in Tourism Destination Branding Research

    Directory of Open Access Journals (Sweden)

    Adeyinka-Ojo S.F.

    2014-01-01

    Full Text Available A review of literature indicates that there are different types of qualitative research methods such as action research, content analysis, ethnography, grounded theory, historical analysis, phenomenology and case study. However, which approach is to be used depends on several factors such as the nature and objectives of the research. The aim of this paper is to focus on the research methodology aspects of applying case study as a research approach and its relevance in tourism destination branding research specifically on a single case study (SCS context. There are arguments that the SCS is a weak research strategy. Some of the potentials or shortcomings highlighted in the literature include the primitive nature of SCS, flexibility of sample technique, data collection method and data analysis. Others include lack of rigour, reliability, validity, credibility of findings and generalisation. This paper has adopted content analysis of the literature on tourism destination branding. Findings indicate that the quality of SCS can be verified using specific case study tactics for four design tests such as validity (construct, internal and external; and reliability using the case study protocol. Theoretical implication suggests that SCS is an empirical enquiry use to understand complex phenomena and favoured by practitioners.

  10. Pediatric surgical diseases. A radiological surgical case study approach

    Energy Technology Data Exchange (ETDEWEB)

    Esposito, Ciro [Federico II Univ. of Naples (Italy). Chair of Pediatric Surgery; Esposito, Giovanni (eds.) [Federico II Univ. of Naples (Italy). School of Medicine

    2009-07-01

    Radiologic evaluation of an infant or child suspected of having a surgical disease can be a complex problem. With this volume, the editors have created a book focused on pediatric imaging written by pediatricians, pediatric surgeons and pediatric radiologists. This book is a collection of over 200 case reports. The concept is a case study approach: The reader is given radiologic images (plain radiography, computed tomography, magnetic resonance imaging, ultrasonography, etc.) and the clinical history of the patient. On the basis of this information, the reader is asked to identify a diagnostic and therapeutic strategy. Each case is complemented by information on the disease affecting the patient and the management of the case shown, including therapy and follow-up. This educational text is targeted at all medical professionals faced with a variety of diagnostic and therapeutic problems affecting infants and children. (orig.)

  11. Participative Case Studies: Integrating Case Writing and a Traditional Case Study Approach in a Marketing Context

    Science.gov (United States)

    Forman, Howard

    2006-01-01

    Case-based pedagogy is a valuable tool for applying business concepts and theories to organizational contexts. Traditional case-based pedagogy offers such learning opportunities. What this pedagogy lacks, however, is an element of real-time experiential learning opportunities. This research focuses on the advantages of incorporating a case-writing…

  12. Sustainable Design Approach: A case study of BIM use

    Science.gov (United States)

    Abdelhameed, Wael

    2017-11-01

    alternative's consequences. The architect would settle down and proceed in the alternative design of the best sustainable analysis. In later design stages, using the sustainable types of materials such as insulation, cladding, etc., and applying sustainable building components such as doors, windows, etc. would add more improvements and enhancements in reaching better values and metrics. The paper describes the methodology of this design approach through BIM strategies adopted in design creation. Case studies of architectural designs are used to highlight the details and benefits of this proposed approach.

  13. Education-growth dynamics for Australia: A case study approach

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    Kunofiwa Tsaurai

    2015-04-01

    Full Text Available The main focus of this research is to establish the relevancy of the Keynesian theory in explaining education expenditure on the economy of Austria using a case study approach. Wagner (1890 and Keynes (1936 have been for a long time been the two major theorists on the relationship between education expenditure and economic growth. Both theoretical and empirical literature review concludes that the two variables relate to each other in two distinct ways, the popular one being that education boost the economy (Keynes view followed by the Wagner view that says it is the economy that is doing well that pushes investment in education. A case study review for Austria clearly shows that an increase in education expenditure does not only constitute a significant portion of the GDP per capita in Austria but also provided a positive influence on economic growth and development. The author recommends Austria policymakers and responsible authorities to up their education development programmes and budgets in order to lay a strong foundation for sustainable economic growth and prosperity.

  14. Approaches to Feminist Therapy: A Case Study Illustration

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    Selvira Draganović

    2011-01-01

    Full Text Available This paper deals with the emergence and development of feminism in general and feminist psychology with special emphasis on feminist's reaction to traditional assumptions in Freudian psychology and male dominated theory and research. Feminist movement simply started as a women's activism which later claimed political identity and finally ended as women's liberation movement. Feminists simply advocate gender equality. Emergence of feminist psychology movement and appearance of significant female figures in psychology is further explained along with their contribution to the theory, personality and specific developmental issues along with its input to the therapy and counseling field. The influence of four feminist philosophical approaches namely, liberal feminism, cultural feminism, radical feminism and social feminism are also shortly discussed alongside with their practical implications. Above and beyond, feminist contribution to the therapy field reflected in offering specific therapy goals are also discussed. Self esteem as a core issue and one of feminist therapy goals is finally discussed and presented through a specific case study illustration. Feminist therapy is important therapy approach with significant therapy goals contribution in relation to women's mental health issues. Consideration of sex, gender, cultural diversity, etiology, diagnosis and treatment is feminist request for successful therapy because fixing woman for functioning in a dysfunctional society seems not enough.

  15. Dialogical Approach Applied in Group Counselling: Case Study

    Science.gov (United States)

    Koivuluhta, Merja; Puhakka, Helena

    2013-01-01

    This study utilizes structured group counselling and a dialogical approach to develop a group counselling intervention for students beginning a computer science education. The study assesses the outcomes of group counselling from the standpoint of the development of the students' self-observation. The research indicates that group counselling…

  16. The Case Study Approach: Some Theoretical, Methodological and Applied Considerations

    Science.gov (United States)

    2013-06-01

    studies have a long history of use and account for a large portion of articles and books in various disciplines, such as psychology , sociology...photographs, videotapes, projective techniques and psychological testing, life histories and the like (Stake 1995; Tellis 1997; Yin 2009). Hence, case...Choudrie (2007) examined the behaviours of employees including understanding of the humanistic elements such as meta-abilities (i.e. cognitive skills

  17. Approach to operational mine planning: Case study Tamnava West

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    Stevanović Dejan R.

    2014-01-01

    Full Text Available In contemporary mining industry is very difficult to achieve production targets and profit without investing effort in detailed excavation planning. It is especially true for deposits with complex geological structure and production technology, as is the case for many coal mines in Serbia. The majority of coal production is used for generation of electricity in power plant. This fact is the main reason why production objectives of coal mine and power plant are strongly connected. Due to the fluctuation of the coal quality, operational mine planning (as a part of coal homogenization process, is of critical importance for managing successful coal quality control and meeting criteria of power plant. This paper investigates advantage of proper operational planning on coal quality control process and overall production performance. For better understanding case study is conducted on open pit Tamnava West field. Successful operational mine planning is almost impossible without use of modern software packages. For that reason in presented case study operational mine planning is done with Minex software.

  18. Place Branding – Geographical Approach. Case Study: Waterloo

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    Marius-Cristian Neacşu

    2016-11-01

    Full Text Available This study represents an exploratory analysis of the evolution of the place branding concept, with an important focus on the geographical perspective. How has this notion, a newcomer into the geographers' analysis, changed over time and what role does it have in the decision making process of intervening into the way a certain place is organised or as an instrument of economic revival and territorial development? At least from the perspective of Romanian geographical literature, the originality and novelty of this study is obvious. An element of the originality of this research is the attempt of redefining the concept of place branding so that it is more meaningful from the perspective of spatial analyses. The reason for which Waterloo was chosen as a case study is multi-dimensional: the case studies so far have mainly focused on large cities (urban branding instead of place branding and this site has all the theoretical elements to create a stand-alone brand.

  19. Review of extended producer responsibility: A case study approach.

    Science.gov (United States)

    Gupt, Yamini; Sahay, Samraj

    2015-07-01

    Principles of extended producer responsibility have been the core of most of the recent policies and legislation dealing with the end-of-life management of recyclable goods. This article makes an exploratory review of 27 cases of extended producer responsibility from developed and developing economies with and without informal recycling, to ascertain the most important aspect of extended producer responsibility. A comparative analysis of the cases with respect to role of stakeholders in the upstream and downstream stages of the extended producer responsibility has been carried out. Further, the study uses exploratory factor analysis to determine the important aspects of the extended producer responsibility in practice using 13 variables identified from the review. Findings of the comparative analysis reveal that financial responsibility of the producers and separate collecting and recycling agencies contributed significantly to the success of the extended producer responsibility-based environmental policies. Regulatory provisions, take-back responsibility and financial flow come out to be the three most important aspects of the extended producer responsibility. Presence of informal sector had a negative impact on the regulatory provisions. The outcomes of this study could serve as a guideline for designing of effective extended producer responsibility-based policies. © The Author(s) 2015.

  20. A Case Study and Balance Sheet Approach to Unemployment.

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    Hesketh, Beryl; And Others

    1987-01-01

    Describes positive and negative aspects of employment and unemployment in a balance sheet framework. Discusses the value of the balance sheet approach in understanding individual differences in reactions to unemployment. (Author/KS)

  1. Stochastic approaches for product recovery network design: a case study

    NARCIS (Netherlands)

    O.L. Listes (Ovidiu); R. Dekker (Rommert)

    2001-01-01

    textabstractIncreased uncertainty is one of the characteristics of product recovery networks. In particular the strategic design of their logistic infrastructure has to take uncertain information into account. In this paper we present stochastic programming based approaches by which a deterministic

  2. Immune Inspired Security Approach for Manets: a Case Study

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    Mohamed, Yasir Abdelgadir

    2011-06-01

    This paper extends the work that has earlier been established. Immune inspired approach for securing mobile ad hoc networks is specified there. Although it is clearly indicated there that the research scope is the wireless networks in general and hybrid mobile ad hoc networks in particular, we have seen that specifying the security system in one of the communications applications that need further security approach may help to understand how effectively the system can contribute to this vital and important networks sector. Security in this type of networks is important and controversial as it plays a key role in users' eagerness or reluctance for the services provided by these networks. In this paper, the immune inspired security system is specified to secure web services in converged networks.

  3. Networks in Argentine agriculture: a multiple-case study approach

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    Sebastián Senesi

    2013-06-01

    Full Text Available Argentina is among the four largest producers of soybeans, sunflower, corn, and wheat, among other agricultural products. Institutional and policy changes during the 1990s fostered the development of Argentine agriculture and the introduction of innovative process and product technologies (no-till, agrochemicals, GMO, GPS and new investments in modern, large-scale sunflower and soybean processing plants. In addition to technological changes, a "quiet revolution" occurred in the way agricultural production was carried out and organized: from self-production or ownership agriculture to a contract-based agriculture. The objective of this paper is to explore and describe the emergence of networks in the Argentine crop production sector. The paper presents and describes four cases that currently represent about 50% of total grain and oilseed production in Argentina: "informal hybrid form", "agricultural trust fund", "investor-oriented corporate structure", and "network of networks". In all cases, hybrid forms involve a group of actors linked by common objectives, mainly to gain scale, share resources, and improve the profitability of the business. Informal contracts seem to be the most common way of organizing the agriculture process, but using short-term contracts and sequential interfirm collaboration. Networks of networks involve long-term relationships and social development, and reciprocal interfirm collaboration. Agricultural trust fund and investor-oriented corporate structures have combined interfirm collaboration and medium-term relationships. These organizational forms are highly flexible and show a great capacity to adapt to challenges; they are competitive because they enjoy aligned incentives, flexibility, and adaptability.

  4. Towards a Reframing of Student Support: A Case Study Approach

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    Roberts, Pamela Anne; Dunworth, Katie; Boldy, Duncan

    2018-01-01

    This paper reports on a study that investigated the range of institutional support needs of international students at one Australian university with a view to increasing understanding of their needs and the ways in which support was provided. The study involved a number of data collection methods including focus groups, key informant interviews…

  5. Traditional Approach towards Contemporary Design: A Case Study

    OpenAIRE

    Sushama S. Dhepe; Dr. Sheeba Valsson

    2017-01-01

    Traditional architecture acts as a valuable source of inspiration for contemporary designs. The paper aims to analyse the link established between contemporary architecture that with the traditional architecture; as architecture and time are considered as two variables. The study investigates how traditional architecture has been integrated and manifested in contemporary architecture. The paper examines a contemporary house based on traditional design and a view into the past era. The attempt...

  6. A new design approach to innovative spectrometers. Case study: TROPOLITE

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    Volatier, Jean-Baptiste; Baümer, Stefan; Kruizinga, Bob; Vink, Rob

    2014-05-01

    Designing a novel optical system is a nested iterative process. The optimization loop, from a starting point to final system is already mostly automated. However this loop is part of a wider loop which is not. This wider loop starts with an optical specification and ends with a manufacturability assessment. When designing a new spectrometer with emphasis on weight and cost, numerous iterations between the optical- and mechanical designer are inevitable. The optical designer must then be able to reliably produce optical designs based on new input gained from multidisciplinary studies. This paper presents a procedure that can automatically generate new starting points based on any kind of input or new constraint that might arise. These starting points can then be handed over to a generic optimization routine to make the design tasks extremely efficient. The optical designer job is then not to design optical systems, but to meta-design a procedure that produces optical systems paving the way for system level optimization. We present here this procedure and its application to the design of TROPOLITE a lightweight push broom imaging spectrometer.

  7. A statistical approach to latitude measurements: Ptolemy's and Riccioli's geographical works as case studies

    Science.gov (United States)

    Santoro, Luca

    2017-08-01

    The aim of this work is to analyze latitude measurements typically used in historical geographical works through a statistical approach. We use two sets of different age as case studies: Ptolemy's Geography and Riccioli's work on geography. A statistical approach to historical latitude and longitude databases can reveal systematic errors in geographical georeferencing processes. On the other hand, once exploiting the right statistical analysis, this approach can also lead to new information about ancient city locations.

  8. An approach for integrating toxicogenomic data in risk assessment: The dibutyl phthalate case study

    Energy Technology Data Exchange (ETDEWEB)

    Euling, Susan Y., E-mail: euling.susan@epa.gov [National Center for Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Washington, DC (United States); Thompson, Chad M. [ToxStrategies, Inc., 23501 Cinco Ranch Blvd., Suite G265, Katy, TX 77494 (United States); Chiu, Weihsueh A. [National Center for Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Washington, DC (United States); Benson, Robert [U.S. Environmental Protection Agency, Region 8, Mail code 8P-W, 1595 Wynkoop Street, Denver, CO 80202 (United States)

    2013-09-15

    An approach for evaluating and integrating genomic data in chemical risk assessment was developed based on the lessons learned from performing a case study for the chemical dibutyl phthalate. A case study prototype approach was first developed in accordance with EPA guidance and recommendations of the scientific community. Dibutyl phthalate (DBP) was selected for the case study exercise. The scoping phase of the dibutyl phthalate case study was conducted by considering the available DBP genomic data, taken together with the entire data set, for whether they could inform various risk assessment aspects, such as toxicodynamics, toxicokinetics, and dose–response. A description of weighing the available dibutyl phthalate data set for utility in risk assessment provides an example for considering genomic data for future chemical assessments. As a result of conducting the scoping process, two questions—Do the DBP toxicogenomic data inform 1) the mechanisms or modes of action?, and 2) the interspecies differences in toxicodynamics?—were selected to focus the case study exercise. Principles of the general approach include considering the genomics data in conjunction with all other data to determine their ability to inform the various qualitative and/or quantitative aspects of risk assessment, and evaluating the relationship between the available genomic and toxicity outcome data with respect to study comparability and phenotypic anchoring. Based on experience from the DBP case study, recommendations and a general approach for integrating genomic data in chemical assessment were developed to advance the broader effort to utilize 21st century data in risk assessment. - Highlights: • Performed DBP case study for integrating genomic data in risk assessment • Present approach for considering genomic data in chemical risk assessment • Present recommendations for use of genomic data in chemical risk assessment.

  9. A Collaborative Approach to Experiential Learning in University Newswriting and Editing Classes: A Case Study

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    Parks, Perry

    2015-01-01

    This case study examines a creative approach by two journalism professors to enhance experiential learning in separate skills-based newswriting and editing courses by collaborating to produce a live online news report from campus each week on a four-hour deadline. The study builds on previous research into how innovative classroom structures that…

  10. Case Studies of the School-Wide Positive Behavior Support Approach

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    Witwer, Dianne

    2013-01-01

    The purpose of this multiple case study described and compared practices utilized to implement the School-Wide Positive Behavior Support (SWPBS) approach at 3 purposely selected Central California elementary school sites. More specifically, this study described and compared: (a) school practices for defining and teaching school rules/expectations;…

  11. An Integrative Psychotherapy Approach to Foster Community Engagement and Rehabilitation in Schizophrenia: A Case Study Illustration.

    Science.gov (United States)

    Kukla, Marina; Whitesel, Frankie; Lysaker, Paul H

    2016-02-01

    This case study illustrates the use of a long-term integrative psychotherapy approach with a middle- aged man with chronic schizophrenia and a mood disorder. The case of "Holst" describes a man with a history of insecure attachment and trauma who later went on to contract a serious chronic illness, precipitating the onset of psychotic symptoms, depression, and chronic suicidal ideation, resulting in multiple hospitalizations. Combining metacognition-oriented therapy with elements of cognitive behavioral therapy and psychiatric rehabilitation, this approach fostered significantly improved community functioning and attainment of personal goals over time. Through the journey of therapy, the patient also developed a more coherent narrative about his life, established a stable sense of self, and became an active agent in the world. This case illustration demonstrates that these three different approaches can be used in a sequential and complementary fashion to foster recovery in the midst of serious physical and mental illness. © 2015 Wiley Periodicals, Inc.

  12. Differences in treatment approach between Dutch paediatric dentists and general practitioners, a case control study

    NARCIS (Netherlands)

    Kuin, D.; Veerkamp, J.S.J.

    2012-01-01

    AIM: This case control study was to assess whether paediatric dentists perform significantly more diagnostic, preventive and curative care in a clinical setting then do general dental practitioners. METHODS: 16 paediatric dentists were approached and a matching control group of 16 general dental

  13. Implementing the Project Approach: A Case Study of Hybrid Pedagogy in a Hong Kong Kindergarten

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    Chen, Jennifer J.; Li, Hui; Wang, Jing-ying

    2017-01-01

    The Project Approach has been promoted in Hong Kong kindergartens since the 1990s. However, the dynamic processes and underlying mechanisms involved in the teachers' implementation of this pedagogical method there have not yet been fully investigated. This case study of one typical kindergarten in Hong Kong documented how and why eight teachers…

  14. User profiles: from a qualitative case study approach to providing a better service

    OpenAIRE

    Sequeiros, Paula

    2009-01-01

    User profiles were designed through a qualitative approach to a case study of a public library, starting from an analysis of space social relations, of how the building’s design shaped reading practices and of how space was actually being used

  15. A management approach that drives actions strategically: balanced scorecard in a mental health trust case study.

    Science.gov (United States)

    Schmidt, Stefan; Bateman, Ian; Breinlinger-O'Reilly, Jochen; Smith, Peter

    2006-01-01

    Achieving excellence is a current preoccupation in U.K. public health organisations. This article aims to use a case study to explain how a mental health trust delivers excellent performance using a balanced scorecard (BSC) management approach. Reports a project to implement a BSC approach in the South West Yorkshire Mental Health NHS Trust to achieve its "excellence" objectives. The authors were participants in the project. The design of the pilot project was informed theoretically by the work of Kaplan and Norton and practically by in-house discussions on a strategy to achieve excellence. Explains the process of building a BSC strategy step-by-step. Discusses how the vision and strategies of a mental health trust can be translated into tangible measures, which are the basis for actions that are driven strategically. There are many possibilities for a BSC management approach and this case study is specific to mental health trusts in the UK, although it is believed that the case has a universally applicable modus operandi. This article will help healthcare managers to evaluate the benefits of a BSC management approach. This article explains how actions can be structured in connection with a BSC management approach.

  16. A random forest approach to the detection of epistatic interactions in case-control studies.

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    Jiang, Rui; Tang, Wanwan; Wu, Xuebing; Fu, Wenhui

    2009-01-30

    The key roles of epistatic interactions between multiple genetic variants in the pathogenesis of complex diseases notwithstanding, the detection of such interactions remains a great challenge in genome-wide association studies. Although some existing multi-locus approaches have shown their successes in small-scale case-control data, the "combination explosion" course prohibits their applications to genome-wide analysis. It is therefore indispensable to develop new methods that are able to reduce the search space for epistatic interactions from an astronomic number of all possible combinations of genetic variants to a manageable set of candidates. We studied case-control data from the viewpoint of binary classification. More precisely, we treated single nucleotide polymorphism (SNP) markers as categorical features and adopted the random forest to discriminate cases against controls. On the basis of the gini importance given by the random forest, we designed a sliding window sequential forward feature selection (SWSFS) algorithm to select a small set of candidate SNPs that could minimize the classification error and then statistically tested up to three-way interactions of the candidates. We compared this approach with three existing methods on three simulated disease models and showed that our approach is comparable to, sometimes more powerful than, the other methods. We applied our approach to a genome-wide case-control dataset for Age-related Macular Degeneration (AMD) and successfully identified two SNPs that were reported to be associated with this disease. Besides existing pure statistical approaches, we demonstrated the feasibility of incorporating machine learning methods into genome-wide case-control studies. The gini importance offers yet another measure for the associations between SNPs and complex diseases, thereby complementing existing statistical measures to facilitate the identification of epistatic interactions and the understanding of epistasis in

  17. Enhanced ergonomics approaches for product design: a user experience ecosystem perspective and case studies.

    Science.gov (United States)

    Xu, Wei

    2014-01-01

    This paper first discusses the major inefficiencies faced in current human factors and ergonomics (HFE) approaches: (1) delivering an optimal end-to-end user experience (UX) to users of a solution across its solution lifecycle stages; (2) strategically influencing the product business and technology capability roadmaps from a UX perspective and (3) proactively identifying new market opportunities and influencing the platform architecture capabilities on which the UX of end products relies. In response to these challenges, three case studies are presented to demonstrate how enhanced ergonomics design approaches have effectively addressed the challenges faced in current HFE approaches. Then, the enhanced ergonomics design approaches are conceptualised by a user-experience ecosystem (UXE) framework, from a UX ecosystem perspective. Finally, evidence supporting the UXE, the advantage and the formalised process for executing UXE and methodological considerations are discussed. Practitioner Summary: This paper presents enhanced ergonomics approaches to product design via three case studies to effectively address current HFE challenges by leveraging a systematic end-to-end UX approach, UX roadmaps and emerging UX associated with prioritised user needs and usages. Thus, HFE professionals can be more strategic, creative and influential.

  18. Approaches and Technologies for Systems Integration: A Case Study at the Federal University of Lavras

    Directory of Open Access Journals (Sweden)

    GARCIA, C. M.

    2015-06-01

    Full Text Available This case study aims to analyze the integration's approaches and technologies among information systems and services in an academic environment. It has been done a study on the integration history in the Federal University of Lavras. The data had been gathered via questionnaires and documentation analysis. In this analysis, 4 distinct phases were specified. Besides, the advantages and disadvantages of each phase were discussed. The main contribution of this work is the analysis of different integration approaches among information systems and other services.

  19. Applying an integrated fuzzy gray MCDM approach: A case study on mineral processing plant site selection

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    Ezzeddin Bakhtavar

    2017-12-01

    Full Text Available The accurate selection of a processing plant site can result in decreasing total mining cost. This problem can be solved by multi-criteria decision-making (MCDM methods. This research introduces a new approach by integrating fuzzy AHP and gray MCDM methods to solve all decision-making problems. The approach is applied in the case of a copper mine area. The critical criteria are considered adjacency to the crusher, adjacency to tailing dam, adjacency to a power source, distance from blasting sources, the availability of sufficient land, and safety against floods. After studying the mine map, six feasible alternatives are prioritized using the integrated approach. Results indicated that sites A, B, and E take the first three ranks. The separate results of fuzzy AHP and gray MCDM confirm that alternatives A and B have the first two ranks. Moreover, the field investigations approved the results obtained by the approach.

  20. Fitting additive hazards models for case-cohort studies: a multiple imputation approach.

    Science.gov (United States)

    Jung, Jinhyouk; Harel, Ofer; Kang, Sangwook

    2016-07-30

    In this paper, we consider fitting semiparametric additive hazards models for case-cohort studies using a multiple imputation approach. In a case-cohort study, main exposure variables are measured only on some selected subjects, but other covariates are often available for the whole cohort. We consider this as a special case of a missing covariate by design. We propose to employ a popular incomplete data method, multiple imputation, for estimation of the regression parameters in additive hazards models. For imputation models, an imputation modeling procedure based on a rejection sampling is developed. A simple imputation modeling that can naturally be applied to a general missing-at-random situation is also considered and compared with the rejection sampling method via extensive simulation studies. In addition, a misspecification aspect in imputation modeling is investigated. The proposed procedures are illustrated using a cancer data example. Copyright © 2015 John Wiley & Sons, Ltd. Copyright © 2015 John Wiley & Sons, Ltd.

  1. Teaching Sustainability Using an Active Learning Constructivist Approach: Discipline-Specific Case Studies in Higher Education

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    Maria Kalamas Hedden

    2017-07-01

    Full Text Available In this paper we present our rationale for using an active learning constructivist approach to teach sustainability-related topics in a higher education. To push the boundaries of ecological literacy, we also develop a theoretical model for sustainability knowledge co-creation. Drawing on the experiences of faculty at a major Southeastern University in the United States, we present case studies in architecture, engineering, geography, and marketing. Four Sustainability Faculty Fellows describe their discipline-specific case studies, all of which are project-based learning experiences, and include details regarding teaching and assessment. Easily replicated in other educational contexts, these case studies contribute to the advancement of sustainability education.

  2. Case study field evaluation of a systems approach to retrofitting a residential HVAC system

    Energy Technology Data Exchange (ETDEWEB)

    Walker, Iain S.; McWiliams, Jennifer A.; Konopacki, Steven J.

    2003-09-01

    This case study focusing on a residence in northern California was undertaken as a demonstration of the potential of a systems approach to HVAC retrofits. The systems approach means that other retrofits that can affect the HVAC system are also considered. For example, added building envelope insulation reduces building loads so that smaller capacity HVAC system can be used. Secondly, we wanted to examine the practical issues and interactions with contractors and code officials required to accomplish the systems approach because it represents a departure from current practice. We identified problems in the processes of communication and installation of the retrofit that led to compromises in the final energy efficiency of the HVAC system. These issues must be overcome in order for HVAC retrofits to deliver the increased performance that they promise. The experience gained in this case study was used to optimize best practices guidelines for contractors (Walker 2003) that include building diagnostics and checklists as tools to assist in ensuring the energy efficiency of ''house as a system'' HVAC retrofits. The best practices guidelines proved to be an excellent tool for evaluating the eight existing homes in this study, and we received positive feedback from many potential users who reviewed and used them. In addition, we were able to substantially improve the energy efficiency of the retrofitted case study house by adding envelope insulation, a more efficient furnace and air conditioner, an economizer and by reducing duct leakage.

  3. Contextualising case studies in entrepreneurship: A tandem approach to conducting a longitudinal cross-country case study

    DEFF Research Database (Denmark)

    Chetty, S. K.; Partanen, J.; Rasmussen, Erik Stavnsager

    2014-01-01

    Using predictive and effectuation logics as a framework, this research note explains how case study research was conducted to demonstrate rigour and relevance. The study involves a longitudinal cross-country case study on small and medium-sized firm growth and networks undertaken by research teams...... in three countries (Finland, Denmark and New Zealand) involving 33 firms. This research note outlines the implications of this research and provides valuable guidance and reflections upon opportunities for future research regarding the conduct of contextual studies in entrepreneurship without compromising...

  4. Data science in R a case studies approach to computational reasoning and problem solving

    CERN Document Server

    Nolan, Deborah

    2015-01-01

    Effectively Access, Transform, Manipulate, Visualize, and Reason about Data and ComputationData Science in R: A Case Studies Approach to Computational Reasoning and Problem Solving illustrates the details involved in solving real computational problems encountered in data analysis. It reveals the dynamic and iterative process by which data analysts approach a problem and reason about different ways of implementing solutions. The book's collection of projects, comprehensive sample solutions, and follow-up exercises encompass practical topics pertaining to data processing, including: Non-standar

  5. How Supply Chain Governance Influences Information Sharing Behaviors: A Multiple Case Study Approach

    OpenAIRE

    Engel, Tobias;Birth, Olga;Goswami, Suparna;Krcmar, Helmut

    2014-01-01

    Information sharing within the supply chain is an important factor for effective supply chain management. Having access to the right information allows firms to coordinate activities and collaboratively manage supply chains to realize higher performance. Despite this, there exists significant difference in information sharing behaviors among supply chain members. Using an exploratory case study approach, this research identifies the factors that determine differences in information sharing. C...

  6. Approaches to dog health education programs in Australian rural and remote Indigenous communities: four case studies.

    Science.gov (United States)

    Constable, S E; Dixon, R M; Dixon, R J; Toribio, J-A

    2013-09-01

    Dog health in rural and remote Australian Indigenous communities is below urban averages in numerous respects. Many Indigenous communities have called for knowledge sharing in this area. However, dog health education programs are in their infancy, and lack data on effective practices. Without this core knowledge, health promotion efforts cannot progress effectively. This paper discusses a strategy that draws from successful approaches in human health and indigenous education, such as dadirri, and culturally respectful community engagement and development. Negotiating an appropriate education program is explored in its practical application through four case studies. Though each case was unique, the comparison of the four illustrated the importance of listening (community consultation), developing and maintaining relationships, community involvement and employment. The most successful case studies were those that could fully implement all four areas. Outcomes included improved local dog health capacity, local employment and engagement with the program and significantly improved dog health.

  7. The Special Place Project: Efficacy of a Place-Based Case Study Approach for Teaching Geoscience

    Science.gov (United States)

    Moosavi, Sadredin

    2014-05-01

    Achieving geoscience literacy of the general population has become increasingly important world wide as ever more connected and growing societies depend more and more on our planet's limited natural resource base. Building citizen understanding of their dependence on the local environment, and the geologic processes which created and continue to change it, has become a great challenge to educators at all levels of the education system. The Special Place Project described in this presentation explores use of a place-based case study approach combining instruction in geoscience content with development of observation, reasoning, writing and presentation skills. The approach allows students to select the locations for their individual case studies affording development of personal connections between the learner and his environment. The approach gives instructors at many grade levels the ability to develop core pedagogical content and skills while exploring the unique geologic environments relevant to the local population including such critical issues as land use, resource depletion, energy, climate change and the future of communities in a changing world. The geologic reasons for the location of communities and key events in their histories can be incorporated into the students' case studies as appropriate. The project is unique in placing all course instruction in the context of the quest to explore and gain understanding of the student's chosen location by using the inherently more generalized course content required by the curriculum. By modeling how scientists approach their research questions, this pedagogical technique not only integrates knowledge and skills from across the curriculum, it captures the excitement of scientific thinking on real world questions directly relevant to students' lives, increasing student engagement and depth of learning as demonstrated in the case study reports crafted by the students and exam results. Student learning of topics

  8. Allocating Risks in Public-Private Partnerships Using a Transaction Cost Economic Approach: A Case Study

    Directory of Open Access Journals (Sweden)

    Xioa-Hua Jin

    2012-11-01

    Full Text Available Public-private partnership (PPP projects are often characterisedby increased complexity and uncertainty due to their idiosyncrasyin the management and delivery processes such as long-termlifecycle, incomplete contracting, and the multitude of stakeholders.An appropriate risk allocation is particularly crucial to achievingproject success. This paper focuses on the risk allocation in PPPprojects and argues that the transaction cost economics (TCEtheory can integrate the economics part, which is currently missing,into the risk management research. A TCE-based approach isproposed as a logical framework for allocating risks between publicand private sectors in PPP projects. A case study of the SouthernCross Station redevelopment project in Australia is presented toillustrate the approach. The allocation of important risks is putunder scrutiny. Lessons learnt are discussed and alternativemanagement approaches drawing on TCE theory are proposed.

  9. Case Studies of Interactive Whole-Class Teaching in Primary Science: Communicative approach and pedagogic purposes

    Science.gov (United States)

    McMahon, Kendra

    2012-07-01

    By developing two case studies of expert teaching in action, this study aimed to develop knowledge of talk in whole-class teaching in UK primary science lessons and understand this in relation to both the teachers' interpretations and sociocultural theoretical frameworks. Lessons were observed and video-recorded and the teachers engaged in video-stimulated-reflective dialogue to capture participants' reflections upon their own pedagogic purposes and interactions in the classroom. The analytic framework was developed at three levels: sequence of lessons, lesson, and episode. For each episode, the 'communicative approach' and teaching purposes were recorded. Transcripts were developed for fine grain analysis of selected episodes and a quantitative analysis was undertaken of the use of communicative approaches. Findings exemplify how different communicative approaches were used by the case-study teachers for different pedagogical purposes at different points in the sequence of lessons, contributing to primary teachers' repertoire for planning and practice. The initial elicitation of children's ideas can be understood as pooling them to enhance multivoicedness and develop a shared resource for future dialogues. Whole-class talk can support univocality by rehearsing procedural knowledge and exploring the meanings of scientific terminology. Identifying salient features of phenomena in the context of the whole-class marks them as significant as shared knowledge but valuing other observations extends the multivoicedness of the discourse.

  10. Teaching Introductory Oceanography through Case Studies: Project based approach for general education students

    Science.gov (United States)

    Farnsworth, K. L.; House, M.; Hovan, S. A.

    2013-12-01

    A recent workshop sponsored by SERC-On the Cutting Edge brought together science educators from a range of schools across the country to discuss new approaches in teaching oceanography. In discussing student interest in our classes, we were struck by the fact that students are drawn to emotional or controversial topics such as whale hunting and tsunami hazard and that these kinds of topics are a great vehicle for introducing more complex concepts such as wave propagation, ocean upwelling and marine chemistry. Thus, we have developed an approach to introductory oceanography that presents students with real-world issues in the ocean sciences and requires them to explore the science behind them in order to improve overall ocean science literacy among non-majors and majors at 2 and 4 year colleges. We have designed a project-based curriculum built around topics that include, but are not limited to: tsunami hazard, whale migration, ocean fertilization, ocean territorial claims, rapid climate change, the pacific trash patch, overfishing, and ocean acidification. Each case study or project consists of three weeks of class time and is structured around three elements: 1) a media analysis; 2) the role of ocean science in addressing the issue; 3) human impact/response. Content resources range from textbook readings, popular or current print news, documentary film and television, and data available on the world wide web from a range of sources. We employ a variety of formative assessments for each case study in order to monitor student access and understanding of content and include a significant component of in-class student discussion and brainstorming guided by faculty input to develop the case study. Each study culminates in summative assessments ranging from exams to student posters to presentations, depending on the class size and environment. We envision this approach for a range of classroom environments including large group face-to-face instruction as well as hybrid

  11. Managing change in performance measures – An inter-company case study approach

    Directory of Open Access Journals (Sweden)

    Salloum, M.

    2012-01-01

    Full Text Available The field of performance measurement and management (PMM is well filled with frameworks, models and guidelines addressing what to measure and how to design a performance measurement system (PMS. However, what has been less examined so far is how to ensure that PM evolve in tandem with their environments. Further, the few approaches available today are prescriptive and outlines how or what practitioners should do in order to manage change in their PM. Thus, a gap exists in understanding how organisations manage change in their PM in practice. Thus, the purpose of this paper is to outline and compare the approaches of three case companies for managing PM change. In order to fulfil the purpose of the paper, the data presented has been collected through the deployment of case studies. The choice of case studies as means for data collection stems from the possibility of an in-depth and holistic examination of the formulated phenomenon. All three case companies belong to the same company-group that operates within the transportation industry. The industrial footprint of the company is global with operations and sales spread out over the world. The findings suggest that all three companies have processes in place for managing change in PM. However, the approaches differ in design and context. Even though the case companies had different approaches in place to manage change in PM, they shared several commonalities. Commonalities were shared in the way of execution, process input and challenges in IT and culture. Furthermore, employee involvement seemed to be the biggest challenge for all three companies. The findings put forward in this paper are limited as they are confined to three companies from the same company-group. More studies, both from within and outside the company-group, are needed in order to establish a solid base of empirical data for generalisation. However, this paper makes a contribution both through describing how three companies

  12. Interventionist and participatory approaches to flood risk mitigation decisions: two case studies in the Italian Alps

    Science.gov (United States)

    Bianchizza, C.; Del Bianco, D.; Pellizzoni, L.; Scolobig, A.

    2012-04-01

    Flood risk mitigation decisions pose key challenges not only from a technical but also from a social, economic and political viewpoint. There is an increasing demand for improving the quality of these processes by including different stakeholders - and especially by involving the local residents in the decision making process - and by guaranteeing the actual improvement of local social capacities during and after the decision making. In this paper we analyse two case studies of flood risk mitigation decisions, Malborghetto-Valbruna and Vipiteno-Sterzing, in the Italian Alps. In both of them, mitigation works have been completed or planned, yet following completely different approaches especially in terms of responses of residents and involvement of local authorities. In Malborghetto-Valbruna an 'interventionist' approach (i.e. leaning towards a top down/technocratic decision process) was used to make decisions after the flood event that affected the municipality in the year 2003. In Vipiteno-Sterzing, a 'participatory' approach (i.e. leaning towards a bottom-up/inclusive decision process) was applied: decisions about risk mitigation measures were made by submitting different projects to the local citizens and by involving them in the decision making process. The analysis of the two case studies presented in the paper is grounded on the results of two research projects. Structured and in-depth interviews, as well as questionnaire surveys were used to explore residents' and local authorities' orientations toward flood risk mitigation. Also a SWOT analysis (Strengths, Weaknesses, Opportunities and Threats) involving key stakeholders was used to better understand the characteristics of the communities and their perception of flood risk mitigation issues. The results highlight some key differences between interventionist and participatory approaches, together with some implications of their adoption in the local context. Strengths and weaknesses of the two approaches

  13. A microsurgical anterior cervical approach and the immediate impact of mechanical retractors: A case control study

    Directory of Open Access Journals (Sweden)

    Rodrigo Ramos-Zúñiga

    2015-01-01

    Full Text Available Introduction: A microsurgical anterior cervical approach with discectomy and fusion (MACDF is one of the most widely used procedures for treating radicular disorders. This approach is highly successful; however, it is not free from complications. These can be associated with soft tissue injuries. Aim of the Study: The recognition of the risks for these complications should be identified for timely prevention and safe treatment. Materials and Methods: Study Design: Retrospective case control study. This study includes a retrospective case series of 37 patients, paying special attention to immediate complications related to the use of mechanical retraction of soft tissue (dysphagia, dysphonia, esophageal lesions and local hematoma; and a comparative analysis of the outcomes after changes in the retraction method. Results: All selected cases had a positive neurological symptom response in relation to neuropathic pain. Dysphagia and dysphonia were found during the first 72 h in 94.1% of the cases in which automatic mechanical retraction was used for more than one hour during the surgical procedure. A radical change was noted in the reduction of the symptoms after the use of only manual protective blades without automatic mechanical retraction: 5.1% dysphagia and 0% dysphonia in the immediate post-operative period, P = 0.001. Conclusions: Soft tissue damage due to the use of automatic retractors in MACDF is not minor and leads to general discomfort in the patient in spite of good neurological results. These problems most often occur when automatic retractors are used continuously for more than 1 hour, as well as when they are used in multiple levels. Dysphagia, dysphonia and local pain decreased with the use of transient manual blades for retraction, and with intermittent release following minimally invasive principles.

  14. Android arcade game app a real world project : case study approach

    CERN Document Server

    DiMarzio, Jerome

    2012-01-01

    Apress, the leading Android books publisher, continues to provide you with very hands-on, practical books for teaching and showing app developers how to build and design apps, including game apps, that can be built and deployed in the various Android app stores out there. Android Arcade Game App:  A Real World Project - Case Study Approach is no different in that it walks you through creating an arcade style Prison Break game app-top to bottom-for an Android smartphone or tablet.  This book teaches you the unique characteristics and challenges of creating an Arcade style game And it provides y

  15. Towards an Agile Approach in Academic Software Development - A Case Study

    Directory of Open Access Journals (Sweden)

    Logica BANICA

    2016-09-01

    Full Text Available The main focus of this paper is to emphasize the advantages of the Agile strategy when applied to a typical Project Management task. As software development has an old tradition, a comparison of the strengths of the new approach will be presented in detail, aiming to prove that the popularity of Agile is not without reason. There are software tools that help IT architects keep their teams and projects on track, and a case study for the academic environment will be discussed. The Conclusions part will summarize the results and shed some light on the future.

  16. Economic and simulation approach for renewable natural resources. Ethanol production in the EEC: a case study

    Energy Technology Data Exchange (ETDEWEB)

    Swinnen, J.F.; Jacobs, P.A.; Uytterhoeven, J.B.; Tollens, E.F.

    1988-01-01

    A simulation model was constructed in order to evaluate the economic feasibility of a number of well-known or hypothetical conversion processes of biomass to a variety of energy carriers and chemical products. The model was constructed in such a way that it allowed a general approach, with possibilities for testing the impact of different hypotheses and scenarios about market evolutions and technological developments on the overall economics of a process. A case study of the Biostil process for ethanol production in the EC shows that large amounts of subsidies are necessary for profitable production with this process. The price of by-products has a great impact on its profitability.

  17. In silico approaches to study mass and energy flows in microbial consortia: a syntrophic case study

    Directory of Open Access Journals (Sweden)

    Mallette Natasha

    2009-12-01

    Full Text Available Abstract Background Three methods were developed for the application of stoichiometry-based network analysis approaches including elementary mode analysis to the study of mass and energy flows in microbial communities. Each has distinct advantages and disadvantages suitable for analyzing systems with different degrees of complexity and a priori knowledge. These approaches were tested and compared using data from the thermophilic, phototrophic mat communities from Octopus and Mushroom Springs in Yellowstone National Park (USA. The models were based on three distinct microbial guilds: oxygenic phototrophs, filamentous anoxygenic phototrophs, and sulfate-reducing bacteria. Two phases, day and night, were modeled to account for differences in the sources of mass and energy and the routes available for their exchange. Results The in silico models were used to explore fundamental questions in ecology including the prediction of and explanation for measured relative abundances of primary producers in the mat, theoretical tradeoffs between overall productivity and the generation of toxic by-products, and the relative robustness of various guild interactions. Conclusion The three modeling approaches represent a flexible toolbox for creating cellular metabolic networks to study microbial communities on scales ranging from cells to ecosystems. A comparison of the three methods highlights considerations for selecting the one most appropriate for a given microbial system. For instance, communities represented only by metagenomic data can be modeled using the pooled method which analyzes a community's total metabolic potential without attempting to partition enzymes to different organisms. Systems with extensive a priori information on microbial guilds can be represented using the compartmentalized technique, employing distinct control volumes to separate guild-appropriate enzymes and metabolites. If the complexity of a compartmentalized network creates an

  18. Developing a quality by design approach to model tablet dissolution testing: an industrial case study.

    Science.gov (United States)

    Yekpe, Ketsia; Abatzoglou, Nicolas; Bataille, Bernard; Gosselin, Ryan; Sharkawi, Tahmer; Simard, Jean-Sébastien; Cournoyer, Antoine

    2017-11-02

    This study applied the concept of Quality by Design (QbD) to tablet dissolution. Its goal was to propose a quality control strategy to model dissolution testing of solid oral dose products according to International Conference on Harmonization guidelines. The methodology involved the following three steps: (1) a risk analysis to identify the material- and process-related parameters impacting the critical quality attributes of dissolution testing, (2) an experimental design to evaluate the influence of design factors (attributes and parameters selected by risk analysis) on dissolution testing, and (3) an investigation of the relationship between design factors and dissolution profiles. Results show that (a) in the case studied, the two parameters impacting dissolution kinetics are active pharmaceutical ingredient particle size distributions and tablet hardness and (b) these two parameters could be monitored with PAT tools to predict dissolution profiles. Moreover, based on the results obtained, modeling dissolution is possible. The practicality and effectiveness of the QbD approach were demonstrated through this industrial case study. Implementing such an approach systematically in industrial pharmaceutical production would reduce the need for tablet dissolution testing.

  19. Case studies on the use of the 'risk matrix' approach for accident prevention in radiotherapy

    International Nuclear Information System (INIS)

    Dumenigo, Cruz; Vilaragut, Juan J.; Soler, Karen; Cruz, Yoanis; Batista, Fidel; Morales, Jorge L.; Perez, Adrian; Farlane, Teresa Mc.; Guerrero, Mayrka

    2010-01-01

    External beam radiotherapy is the only practice during which humans are directly exposed to a radiation beam to receive high doses. Accidental exposures have occurred throughout the world, thus showing the need for systematic safety assessments, capable to identify preventive measures and to minimize consequences of accidental exposure. The 'risk matrix' approach is a semi quantitative method to evaluate the likelihood and the severity of events by means of a scale, and defines acceptability criteria on the basis of the risk. For each accident sequence identified, the following questions come up: how often is it?, how severe are the consequences? and, what safety measures should be taken to prevent it?. From these answers we can obtain the resulting risk by using the 'Risk Matrix' table. In this study we have used this method to conduct the study in 3 cases (real radiotherapy departments). The case study identified the major weaknesses in radiotherapy service and proposed measures to reduce the risk of accidents. The method is practical and it could be applied in hospitals. This approach allows regulators to improve the quality of their inspections and the rigor of the assessments made to grant the operating license to the entities working with radiotherapy. (author)

  20. A Systematic Approach to Identify Promising New Items for Small to Medium Enterprises: A Case Study

    Directory of Open Access Journals (Sweden)

    Sukjae Jeong

    2016-11-01

    Full Text Available Despite the growing importance of identifying new business items for small and medium enterprises (SMEs, most previous studies focus on conglomerates. The paucity of empirical studies has also led to limited real-life applications. Hence, this study proposes a systematic approach to find new business items (NBIs that help the prospective SMEs develop, evaluate, and select viable business items to survive the competitive environment. The proposed approach comprises two stages: (1 the classification of diversification of SMEs; and (2 the searching and screening of business items. In the first stage, SMEs are allocated to five groups, based on their internal technological competency and external market conditions. In the second stage, based on the types of SMEs identified in the first stage, a set of alternative business items is derived by combining the results of portfolio analysis and benchmarking analysis. After deriving new business items, a market and technology-driven matrix analysis is utilized to screen suitable business items, and the Bruce Merrifield-Ohe (BMO method is used to categorize and identify prospective items based on market attractiveness and internal capability. To illustrate the applicability of the proposed approach, a case study is presented.

  1. Knowledge-enhancing Helix: An Approach for Developing Key Academic Skills at Universities. A Case Study

    Directory of Open Access Journals (Sweden)

    Nadja Boeller

    2008-08-01

    Full Text Available In an increasingly e-literate society, new and media technologies are proliferating and traditional teaching approaches are challenged to meet new requirements. Other aspects such as teamwork and knowledge exchange are also becoming more important. Collaborative working methods are more dominant in the networked business environment. The vocational training at universities is therefore continuously facing with new challenges. The objective of this paper is to show how the implementation of a holistic teaching approach including the idea of blended learning can be an effective way to train students in collaborative and academic working skills, methodological expertise, information literacy, as well as making students aware of new developments in media literacy. This approach follows our proposed concept DIAMOND (Didactical Approach for Media Competence Development with a main focus on the implementation of the "knowledgeenhancing helix." This pedagogical concept was developed corresponding the requirements for "good online learning." The paper accordingly discusses the theoretical framework and presents a case study where the concept was implemented in practice.

  2. Development and application of the SSD approach in scientific case studies for ecological risk assessment.

    Science.gov (United States)

    Del Signore, Anastasia; Hendriks, A Jan; Lenders, H J Rob; Leuven, Rob S E W; Breure, A M

    2016-09-01

    Species sensitivity distributions (SSDs) are used in ecological risk assessment for extrapolation of the results of toxicity tests with single species to a toxicity threshold considered protective of ecosystem structure and functioning. The attention to and importance of the SSD approach has increased in scientific and regulatory communities since the 1990s. Discussion and criticism have been triggered on the concept of the approach as well as its technical aspects (e.g., distribution type, number of toxicity endpoints). Various questions remain unanswered, especially with regard to different endpoints, statistical methods, and protectiveness of threshold levels, for example. In the present literature review (covering the period 2002-2013), case studies are explored in which the SSD approach was applied, as well as how endpoint types, species choice, and data availability affect SSDs. How statistical methods may be used to construct reliable SSDs and whether the lower 5th percentile hazard concentrations (HC5s) from a generic SSD can be protective for a specific local community are also investigated. It is shown that estimated protective concentrations were determined by taxonomic groups rather than the statistical method used to construct the distribution. Based on comparisons between semifield and laboratory-based SSDs, the output from a laboratory SSD was protective of semifield communities in the majority of studies. Environ Toxicol Chem 2016;35:2149-2161. © 2016 SETAC. © 2016 SETAC.

  3. The parent-child-therapist alliance: A case study using a strategic approach.

    Science.gov (United States)

    Naidu, Thirusha; Behari, Sheethal

    2010-06-01

    In this paper we present a single case study of a clinical approach that addresses the needs of parents and their children in psychotherapy. The approach begins by addressing the child's and parent's concerns separately at first by establishing strong therapeutic alliances with each, and then proceeds to address the concerns of the parent-child dyad. The basic premise is that the therapeutic alliance is the central element to successful outcomes in psychotherapy. The nature of alliance-building and its associated methods and techniques have been extensively considered for adult therapy. However, there is considerably less written on the therapeutic alliance with children and adolescents in the context of family interventions. We briefly examine some theoretical dimensions and applications of the therapeutic alliance in psychotherapy with children/adolescents and their parents. A three-phase alliance-building psychotherapy strategy, founded on the idea that each therapeutic relationship warrants an effective working alliance, is proposed. The case of a single mother and her adolescent daughter is employed to illustrate the strategy.

  4. Understanding factors associated with the translation of cardiovascular research: a multinational case study approach

    Science.gov (United States)

    2014-01-01

    Background Funders of health research increasingly seek to understand how best to allocate resources in order to achieve maximum value from their funding. We built an international consortium and developed a multinational case study approach to assess benefits arising from health research. We used that to facilitate analysis of factors in the production of research that might be associated with translating research findings into wider impacts, and the complexities involved. Methods We built on the Payback Framework and expanded its application through conducting co-ordinated case studies on the payback from cardiovascular and stroke research in Australia, Canada and the United Kingdom. We selected a stratified random sample of projects from leading medical research funders. We devised a series of innovative steps to: minimize the effect of researcher bias; rate the level of impacts identified in the case studies; and interrogate case study narratives to identify factors that correlated with achieving high or low levels of impact. Results Twenty-nine detailed case studies produced many and diverse impacts. Over the 15 to 20 years examined, basic biomedical research has a greater impact than clinical research in terms of academic impacts such as knowledge production and research capacity building. Clinical research has greater levels of wider impact on health policies, practice, and generating health gains. There was no correlation between knowledge production and wider impacts. We identified various factors associated with high impact. Interaction between researchers and practitioners and the public is associated with achieving high academic impact and translation into wider impacts, as is basic research conducted with a clinical focus. Strategic thinking by clinical researchers, in terms of thinking through pathways by which research could potentially be translated into practice, is associated with high wider impact. Finally, we identified the complexity of

  5. The organisational context of nursing care in stroke units: a case study approach.

    Science.gov (United States)

    Burton, Christopher R; Fisher, Andrea; Green, Theresa L

    2009-01-01

    Internationally the stroke unit is recognised as the evidence-based model for patient management, although clarity about the effective components of stroke units is lacking. Whilst skilled nursing care has been proposed as one component, the theoretical and empirical basis for stroke nursing is limited. We attempted to explore the organisational context of stroke unit nursing, to determine those features that staff perceived to be important in facilitating high quality care. A case study approach was used, that included interviews with nurses and members of the multidisciplinary teams in two Canadian acute stroke units. A total of 20 interviews were completed, transcribed and analysed thematically using the Framework Approach. Trustworthiness was established through the review of themes and their interpretation by members of the stroke units. Nine themes that comprised an organisational context that supported the delivery of high quality nursing care in acute stroke units were identified, and provide a framework for organisational development. The study highlighted the importance of an overarching service model to guide the organisation of care and the development of specialist and advanced nursing roles. Whilst multidisciplinary working appears to be a key component of stroke unit nursing, various organisational challenges to its successful implementation were highlighted. In particular the consequence of differences in the therapeutic approach of nurses and therapy staff needs to be explored in greater depth. Successful teamwork appears to depend on opportunities for the development of relationships between team members as much as the use of formal communication systems and structures. A co-ordinated approach to education and training, clinical leadership, a commitment to research, and opportunities for role and practice development also appear to be key organisational features of stroke unit nursing. Recommendations for the development of stroke nursing

  6. THE BILINGUAL INTERCULTURAL APPROACH AND ITS IMPACT ON THE QUALITY OF INDIGENOUS EDUCATION: CASE STUDY

    Directory of Open Access Journals (Sweden)

    José Viveros-Márquez

    2014-01-01

    Full Text Available This study presents the results of a systematic evaluation of the implementation of the Bilingual Intercultural approach (EIB in indigenous primary education and its impact on the quality of education, in the dimensions of equity, relevance, effectiveness and efficiency of education; in two indigenous regions of Mexico, with a comparative approach between the cases studied. The study is qualitative descriptive-explanatory section; the evaluation model CIPP (Context, Input, Process and Product and Shinkfield Stufflebeam (1987 was applied. It also appealed to the school ethnography, for data collection techniques of participant observation (class sessions focus group (teachers and parents, and semi-structured interview (managers and supervisors of each indigenous region. The results show that the EIB has had a limited impact on the quality of education; associated internal and external factors of each school and context; shape in the lack of effectiveness of the EIB in elementary school that significantly reduces the outcomes achieved by the indigenous teachers and education regarding bilingualism, multiculturalism and educational quality.

  7. Knowledge management through the e-learning approach - a case study of online engineering courses

    Science.gov (United States)

    Aichouni, Mohamed; Benchicou, Soraya; Nehari, Dris

    2013-06-01

    Though it is universally accepted that the face-to-face approach is the best way for education and training, however, with the advent of the information and communication technologies (mainly the World Wide Web) it became possible to enhance further the methods we are using to teach our students and to share the teaching material within a broaden engineering, technical and business communities. This paper is dedicated to making a review of the basic concepts of knowledge management and e-learning and to show how these two modern concepts can be integrated into engineering education to produce knowledge, disseminate it and share it within virtual interest groups and networks of engineering students, academic teachers and industrial engineers and technicians and business managers. A practical case study will be presented and discussed.

  8. "The ickiness factor:" case study of an unconventional psychotherapeutic approach to pediatric OCD.

    Science.gov (United States)

    Dembo, Justine S

    2014-01-01

    Obsessive-compulsive disorder (OCD) is a complex condition with biological, genetic, and psychosocial causes. Traditional evidence-based treatments include cognitive-behavioural therapy, either alone or in combination with serotonin-specific reuptake inhibitors (SSRI's), other serotonergic agents, or atypical antipsychotics. These treatments, however, often do not lead to remission, and therefore, it is crucial to explore other less conventional therapeutic approaches. This paper describes a case study in which psychodynamic, narrative, existential, and metaphor therapy in combination with more conventional treatments led to a dramatic remission of severe OCD in a 12 year old hospitalized on a psychiatric inpatient unit. The paper, which is written partly in the form of a story to demonstrate on a meta-level the power of narrative, is also intended to illustrate the challenges of countertransference in the treatment of patients with severe OCD, and the ways in which a reparative therapeutic alliance can lead to unexpected and vital change.

  9. Utilising a collective case study system theory mixed methods approach: a rural health example.

    Science.gov (United States)

    Adams, Robyn; Jones, Anne; Lefmann, Sophie; Sheppard, Lorraine

    2014-07-28

    Insight into local health service provision in rural communities is limited in the literature. The dominant workforce focus in the rural health literature, while revealing issues of shortage of maldistribution, does not describe service provision in rural towns. Similarly aggregation of data tends to render local health service provision virtually invisible. This paper describes a methodology to explore specific aspects of rural health service provision with an initial focus on understanding rurality as it pertains to rural physiotherapy service provision. A system theory-case study heuristic combined with a sequential mixed methods approach to provide a framework for both quantitative and qualitative exploration across sites. Stakeholder perspectives were obtained through surveys and in depth interviews. The investigation site was a large area of one Australian state with a mix of rural, regional and remote communities. 39 surveys were received from 11 locations within the investigation site and 19 in depth interviews were conducted. Stakeholder perspectives of rurality and workforce numbers informed the development of six case types relevant to the exploration of rural physiotherapy service provision. Participant perspective of rurality often differed with the geographical classification of their location. The numbers of onsite colleagues and local access to health services contributed to participant perceptions of rurality. The complexity of understanding the concept of rurality was revealed by interview participants when providing their perspectives about rural physiotherapy service provision. Dual measures, such as rurality and workforce numbers, provide more relevant differentiation of sites to explore specific services, such rural physiotherapy service provision, than single measure of rurality as defined by geographic classification. The system theory-case study heuristic supports both qualitative and quantitative exploration in rural health services

  10. A retrospective likelihood approach for efficient integration of multiple omics factors in case-control association studies.

    Science.gov (United States)

    Balliu, Brunilda; Tsonaka, Roula; Boehringer, Stefan; Houwing-Duistermaat, Jeanine

    2015-03-01

    Integrative omics, the joint analysis of outcome and multiple types of omics data, such as genomics, epigenomics, and transcriptomics data, constitute a promising approach for powerful and biologically relevant association studies. These studies often employ a case-control design, and often include nonomics covariates, such as age and gender, that may modify the underlying omics risk factors. An open question is how to best integrate multiple omics and nonomics information to maximize statistical power in case-control studies that ascertain individuals based on the phenotype. Recent work on integrative omics have used prospective approaches, modeling case-control status conditional on omics, and nonomics risk factors. Compared to univariate approaches, jointly analyzing multiple risk factors with a prospective approach increases power in nonascertained cohorts. However, these prospective approaches often lose power in case-control studies. In this article, we propose a novel statistical method for integrating multiple omics and nonomics factors in case-control association studies. Our method is based on a retrospective likelihood function that models the joint distribution of omics and nonomics factors conditional on case-control status. The new method provides accurate control of Type I error rate and has increased efficiency over prospective approaches in both simulated and real data. © 2015 Wiley Periodicals, Inc.

  11. A holistic approach to improving indoor environmental quality: A case study

    International Nuclear Information System (INIS)

    Milam, J.A.; Kinser, D.E.

    1993-01-01

    One of the big six accounting firms recently consolidated several offices into a regional headquarters located in a southern metropolitan city. This regional headquarters involved seven floors totalling 187,000 square feet of tenant space in a new high rise building. The accounting firm realized that improving their employees' work environment would provide significant savings from increased worker productivity and reduced absenteeism. Therefore, the firm retained Environmental Design International (EDI) to provide consulting services to create and maintain an environmentally healthy office space. The creation of a healthy, productive and safe indoor environment involves a total, holistic approach to the various elements that affect indoor environmental quality (IEQ) in a building. A holistic approach requires detailed evaluation of all areas that impact indoor environmental quality and not just the more common review of HVAC systems. This case study shows that the optimization of a healthy indoor environment is an endless, all inclusive process: beginning with the initial construction material selections and environmental systems design; continuing through the construction and commissioning phases; and progressing to pro-active monitoring of IEQ parameters to protect the tenant's investment in a healthy, productive and safe indoor environment

  12. Generalizing geological maps with the GeoScaler software: The case study approach

    Science.gov (United States)

    Smirnoff, Alex; Huot-Vézina, Gabriel; Paradis, Serge J.; Boivin, Ruth

    2012-03-01

    Map generalization is rapidly becoming an important task in surficial and bedrock geology as broader regional and cross-boundary compilations are made from maps originally describing more specific areas. However, the entire process is still not defined in sufficient detail and relatively few automated tools are available. Moreover, the existing tools are primarily designed for generalization of topographic maps and do not address the needs specific to geology. Here we present two case studies describing our approach to the generalization of surficial and bedrock geology maps, respectively. To accomplish the task, we employed the GeoScaler software developed at the Laboratoire de cartographie numérique et de photogrammétrie (LCNP) of the Quebec division of the Geological Survey of Canada (Version 2009). The software is free over the Internet but requires an ArcGIS (ArcInfo) license. Four surficial geology maps at 1:250,000 scale were produced from 14 maps scaled at 1:100,000, while a single compilation of six bedrock maps was generalized from 1:125,000 to 1:500,000 scale. We describe the general considerations required to approach any generalization exercise, applied software, objectives, input data, major generalization steps, and the final results. All generalized maps were favorably evaluated by experts in geological mapping and the surficial maps have been published.

  13. The state of case study approach in mergers and acquisitions literature: A bibliometric analysis

    Directory of Open Access Journals (Sweden)

    K.S. Reddy

    2015-12-01

    Full Text Available The purpose of this paper is to survey the state of case study research in mergers and acquisitions (M&A literature. Thus, it is an original attempt at presenting the current state and review of the case method in M&A research, provided no earlier study claims this. The stylized review reveals that 93 journal articles adopted the case method of which 66 (27 articles examined developed (emerging markets, and single (multiple case based studies were 44 (46 and remaining three adopted survey and interview method during survey period 1991–2015. Albeit, very few studies accomplished the purpose of case study research in business management, that is, testing extant theory and building new theory. Lastly, we recall various methodological guidelines to establish the sound research environment in the qualitative case method.

  14. Advantages of the Multiple Case Series Approach to the Study of Cognitive Deficits in Autism Spectrum Disorder

    Science.gov (United States)

    Towgood, Karren J.; Meuwese, Julia D. I.; Gilbert, Sam J.; Turner, Martha S.; Burgess, Paul W.

    2009-01-01

    In the neuropsychological case series approach, tasks are administered that tap different cognitive domains, and differences within rather than across individuals are the basis for theorising; each individual is effectively their own control. This approach is a mainstay of cognitive neuropsychology, and is particularly suited to the study of…

  15. The use of an eclectic approach for the treatment of low back pain: a case study.

    Science.gov (United States)

    Beattie, P

    1992-12-01

    The purposes of this case report are (1) to describe an examination approach that relates identification of an impairment to a disability and (2) to describe an eclectic treatment approach for an individual with low back pain (LBP). The individual described in this case report is an intercollegiate athlete who, because of chronic LBP, was unable to perform his sport of pole vaulting. The findings of the physical therapy examination suggested that an impairment of lumbar motion prevented the patient from assuming the spinal position necessary for pole vaulting. The goals of the treatment consisted of increasing the patient's lumbar motion to that required for pole vaulting and to have the patient pole vault without pain or stiffness. The treatment approach that was used combined procedures described by Maitland, McKenzie, and others. The rationale for the use of these procedures and their limitations are discussed.

  16. Supportive Communication to Facilitate Chinese Patients' Adaptation to a Permanent Colostomy: A Qualitative Case Study Approach.

    Science.gov (United States)

    Tao, Hui; Songwathana, Praneed; Isaramalai, Sang-Arun; Wang, Qingxi

    2016-01-01

    This study, which is a part of action research, aims to explore how supportive communication can impact individuals' adaptation to a permanent colostomy in a Chinese cultural context. Two Chinese rectal cancer patients with complexity and difficulty in living with a permanent colostomy were selected using a qualitative case study approach. The researcher (H.T.) interacted with the participants along their journey from the preoperative period until the third postoperative month after discharge via face-to-face or telephone interviews. Content analysis was applied. Supportive communication was characterized by "communication as a supportive tool," which consisted of 4 elements: respect, description, empathy, and empowerment. The nursing strategies included (1) developing a collaborative relationship with patients and families; (2) understanding patients' concerns and problems; (3) discussing potential solutions; (4) encouraging patients to take action; (5) bringing out emotional expression; (6) normalizing negative emotions; and (7) protecting hope. The findings of this study informed that supportive communication is a valuable tool for nurses to provide informational and emotional support to Chinese patients in order to enhance their adaptation to living with a permanent colostomy. Developing an operational manual to enhance supportive communication for patients with colostomy is suggested.

  17. Learning nursing through simulation: A case study approach towards an expansive model of learning.

    Science.gov (United States)

    Berragan, Liz

    2014-08-01

    This study explores the impact of simulation upon learning for undergraduate nursing students. The study objectives were (a) to explore the experiences of participating in simulation education for a small group of student nurses; and (b) to explore learning through simulation from the perspectives of the nursing students, the nurse educators and the nurse mentors. Conducted as a small-scale narrative case study, it tells the unique stories of a small number of undergraduate nursing students, nurse mentors and nurse educators and explores their experiences of learning through simulation. Data analysis through progressive focusing revealed that the nurse educators viewed simulation as a means of helping students to learn to be nurses, whilst, the nurse mentors suggested that simulation helped them to determine nursing potential. The students' narratives showed that they approached simulation learning in different ways resulting in a range of outcomes: those who were successfully becoming nurses, those who were struggling or working hard to become nurses and those who were not becoming nurses. Theories of professional practice learning and activity theory present an opportunity to articulate and theorise the learning inherent in simulation activities. They recognise the links between learning and the environment of work and highlight the possibilities for learning to inspire change and innovation. Copyright © 2014 Elsevier Ltd. All rights reserved.

  18. Evaluation of deep vadose zone contaminant flux into groundwater: Approach and case study

    Science.gov (United States)

    Oostrom, M.; Truex, M. J.; Last, G. V.; Strickland, C. E.; Tartakovsky, G. D.

    2016-06-01

    For sites with a contaminant source located in the vadose zone, the nature and extent of groundwater contaminant plumes are a function of the contaminant flux from the vadose zone to groundwater. Especially for thick vadose zones, transport may be relatively slow making it difficult to directly measure contaminant flux. An integrated assessment approach, supported by site characterization and monitoring data, is presented to explain current vadose zone contaminant distributions and to estimate future contaminant flux to groundwater in support of remediation decisions. The U.S. Department of Energy Hanford Site (WA, USA) SX Tank Farm was used as a case study because of a large existing contaminant inventory in its deep vadose zone, the presence of a limited-extent groundwater plume, and the relatively large amount of available data for the site. A predictive quantitative analysis was applied to refine a baseline conceptual model through the completion of a series of targeted simulations. The analysis revealed that site recharge is the most important flux-controlling process for future contaminant flux. Tank leak characteristics and subsurface heterogeneities appear to have a limited effect on long-term contaminant flux into groundwater. The occurrence of the current technetium-99 groundwater plume was explained by taking into account a considerable historical water-line leak adjacent to one of the tanks. The analysis further indicates that the vast majority of technetium-99 is expected to migrate into the groundwater during the next century. The approach provides a template for use in evaluating contaminant flux to groundwater using existing site data and has elements that are relevant to other disposal sites with a thick vadose zone.

  19. Management of gallbladder duplication using a single-site robotic-assisted approach: a case study.

    Science.gov (United States)

    Boyle, Melanie Adams; Kaplin, Aviva Wallace; Kushnir, Leon; Montero-Pearson, Per

    2016-06-01

    Gallbladder duplication is a rare congenital anomaly. Here, we describe a 29-year-old female who presents with classic symptoms of biliary colic. A duplicated gallbladder was recognized on preoperative ultrasound. This case report reviews a single-site robotic-assisted cholecystectomy with a cystic duct duplication. The patient underwent the surgery without complication. Due to the aberrant anatomy of the cystic triangle, it was decided to mobilize the gallbladder in a dome-down fashion. True gallbladder duplication can be categorized according to cystic duct orientation based on Boyden's classification. Preoperative diagnosis is essential to prevent surgical complications. A laparoscopic approach can be carried out safely in the hands of a skilled surgeon. This case report shows that the robotic-assisted surgical approach is a viable and safe alternative.

  20. How should grid operators govern smart grid innovation projects? An embedded case study approach

    International Nuclear Information System (INIS)

    Reuver, Mark de; Lei, Telli van der; Lukszo, Zofia

    2016-01-01

    Grid operators increasingly have to collaborate with other actors in order to realize smart grid innovations. For routine maintenance, grid operators typically acquire technologies in one-off transactions, but the innovative nature of smart grid projects may require more collaborate relationships. This paper studies how a transactional versus relational approach to governing smart grid innovation projects affects incentives for other actors to collaborate. We analyse 34 cases of smart grid innovation projects based on extensive archival data as well as interviews. We find that projects relying on relational governance are more likely to provide incentives for collaboration. Especially non-financial incentives such as reputational benefits and shared intellectual property rights are more likely to be found in projects relying on relational governance. Policy makers that wish to stimulate smart grid innovation projects should consider stimulating long-term relationships between grid operators and third parties, because such relationships are more likely to produce incentives for collaboration. - Highlights: • Smart grids require collaboration between grid operators and other actors. • We contrast transactional and relational governance of smart grid projects. • Long-term relations produce more incentives for smart grid collaboration. • Non-financial incentives are more important in long-term relations. • Policy makers should stimulate long-term relations to stimulate smart grids.

  1. Leaving school: Analysis of a case study from the angle of the ecological approach

    Directory of Open Access Journals (Sweden)

    Stepanović-Ilić Ivana

    2015-01-01

    Full Text Available Leaving school has far reaching consequences both for the individual and the society. We tackled this problem by using Bronfenbrenner's ecological systems theory to analyse case studies of 12 children (elementary and secondary schools who quit schooling or are under risk to do so. It is an adequate frame of reference for understanding the causes of school-leaving since it considers different levels of development and their relations. The children and four parents took part in semi-structured interviews. Other data were gathered by interviewing the focus groups of school principals, school pedagogues and psychologists, teachers, Parent Councils, and pupils. The qualitative analysis shows a disturbed structure and functioning even at the level of microsystem (family, school, peers which may be linked with school-leaving. The relations between microsystems are sporadic and inadequate (mesosystem which additionally stimulates school-leaving. Higher levels of environment (exo and macro systems in which children do not participate, yet depend upon their indirect influence, stimulate school leaving, too. Many children were faced with nonnormative life events (chrono-system: divorce or death of parent/s, underage pregnancy, family moving. We view this research as the initial step which will identify the problems and lead to future directions of research which would, based on Bronfenbrenner's approach, systematically examine different levels of environment and form the basis for creating ecologically valid measures for prevention of school-leaving.

  2. Strategic approaches to simulation-based education: A case study from Australia

    Directory of Open Access Journals (Sweden)

    Debra Nestel

    2013-01-01

    Full Text Available This paper addresses some of the challenges met when developing widely distributed, broad spectrum, simulation-based education (SBE for health professionals, such as resource duplication, inconsistent facilities utilization, discipline-specific silos, and the intersection of academic institutions and health services sectors. We examine three primary contributors to successful simulation-based practices - strategic planning, program development, and professional networks. Further, we provide examples of how each of these contributors function at different levels to assure comprehensive, yet sustainable approaches to implementing SBE for greatest impact at national, state, regional, and institutional levels. We draw on the example of Australia and its state and regional government structures, including the challenges in providing health services across a widely variable geography and population distribution. The types of health services and issues relating to health provision and management reflect those found in many western countries. Our hope is that the experiences gained at each level of governance within Australia may inform similar, successful development in other countries. We emphasize the importance of leadership and investment at the national level that serves to inform state, regional, and institutional efforts through a "trickle down" effect. Although evaluation of the strategic planning, program development, and professional networks described in this case study is still ongoing, their preliminary coordination has resulted in significant investment and support at all levels.

  3. A Group Approach in a Community Empowerment: A Case Study of Waste Recycling Group in Jakarta

    Science.gov (United States)

    Hadiyanti, Puji

    2016-01-01

    This study reviews a group approach in empowering the community through waste recycling activities related to the development of human resources in Jakarta. The specific objectives to be achieved are the wish to understand and find: (1) Conditions of waste recycling empowerment in Jakarta, (2) Mechanisms of a group approach in empowering…

  4. Decreased pain sensitivity due to trimethylbenzene exposure: case study on quantitative approaches for hazard identification

    Science.gov (United States)

    Traditionally, human health risk assessments have relied on qualitative approaches for hazard identification, often using the Hill criteria and weight of evidence determinations to integrate data from multiple studies. Recently, the National Research Council has recommended the ...

  5. Methodological issues in case-study approach in evaluation and survey

    OpenAIRE

    Marta Berni

    2014-01-01

    A vast number of case studies (some of which are considered classic works) is produced in academic/scientific operative research, thesis and dissertation research as well as in professional practice across a variety of traditional social science disciplines - like psychology, sociology, political science, anthropology, history and economics - and practice oriented fields such as urban planning, public administration, public policy, management sciences, and education. Case studies often occur ...

  6. An approach to model validation and model-based prediction -- polyurethane foam case study.

    Energy Technology Data Exchange (ETDEWEB)

    Dowding, Kevin J.; Rutherford, Brian Milne

    2003-07-01

    Enhanced software methodology and improved computing hardware have advanced the state of simulation technology to a point where large physics-based codes can be a major contributor in many systems analyses. This shift toward the use of computational methods has brought with it new research challenges in a number of areas including characterization of uncertainty, model validation, and the analysis of computer output. It is these challenges that have motivated the work described in this report. Approaches to and methods for model validation and (model-based) prediction have been developed recently in the engineering, mathematics and statistical literatures. In this report we have provided a fairly detailed account of one approach to model validation and prediction applied to an analysis investigating thermal decomposition of polyurethane foam. A model simulates the evolution of the foam in a high temperature environment as it transforms from a solid to a gas phase. The available modeling and experimental results serve as data for a case study focusing our model validation and prediction developmental efforts on this specific thermal application. We discuss several elements of the ''philosophy'' behind the validation and prediction approach: (1) We view the validation process as an activity applying to the use of a specific computational model for a specific application. We do acknowledge, however, that an important part of the overall development of a computational simulation initiative is the feedback provided to model developers and analysts associated with the application. (2) We utilize information obtained for the calibration of model parameters to estimate the parameters and quantify uncertainty in the estimates. We rely, however, on validation data (or data from similar analyses) to measure the variability that contributes to the uncertainty in predictions for specific systems or units (unit-to-unit variability). (3) We perform statistical

  7. A system dynamics approach for healthcare waste management: a case study in Istanbul Metropolitan City, Turkey.

    Science.gov (United States)

    Ciplak, Nesli; Barton, John R

    2012-06-01

    Healthcare waste consists of various types of waste materials generated at hospitals, medical research centres, clinics and laboratories. Although 75-90% of this waste is classified as 'domestic' in nature, 20-25% is deemed to be hazardous, which if not disposed of appropriately, poses a risk to healthcare workers, patients, the environment and even the whole community. As long as healthcare waste is mixed with municipal waste and not segregated prior to disposal, costs will increase substantially. In this study, healthcare waste increases along with the potential to decrease the amounts by implementing effective segregation at healthcare facilities are projected to 2040. Our long-term aim is to develop a system to support selection and planning of the future treatment capacity. Istanbul in Turkey was used as the case study area. In order to identify the factors affecting healthcare waste generation in Istanbul, observations were made and interviews conducted in Istanbul over a 3 month period. A system dynamics approach was adopted to build a healthcare waste management model using a software package, Vensim Ple Plus. Based on reported analysis, the non-hazardous municipal fraction co-disposed with healthcare waste is around 65%. Using the projected waste generation flows, reducing a municipal fraction to 30% has the potential to avoid some 8000 t year(-1) of healthcare waste by 2025 and almost 10 000 t year(-1) by 2035. Furthermore, if segregation practices ensured healthcare waste requiring incineration was also selectively managed, 77% of healthcare waste could be diverted to alternative treatment technologies. As the throughput capacity of the only existing healthcare waste treatment facility in Istanbul, Kemerburgaz Incinerator, has already been exceeded, it is evident that improved management could not only reduce overall flows and costs but also permit alternative and cheaper treatment systems (e.g. autoclaving) to be adopted for the healthcare waste.

  8. A new approach to assessing the water footprint of wine: an Italian case study.

    Science.gov (United States)

    Lamastra, Lucrezia; Suciu, Nicoleta Alina; Novelli, Elisa; Trevisan, Marco

    2014-08-15

    Agriculture is the largest freshwater consumer, accounting for 70% of the world's water withdrawal. Water footprints (WFs) are being increasingly used to indicate the impacts of water use by production systems. A new methodology to assess WF of wine was developed in the framework of the V.I.V.A. project (Valutazione Impatto Viticoltura sull'Ambiente), launched by the Italian Ministry for the Environment in 2011 to improve the Italian wine sector's sustainability. The new methodology has been developed that enables different vines from the same winery to be compared. This was achieved by calculating the gray water footprint, following Tier III approach proposed by Hoekstra et al. (2011). The impact of water use during the life cycle of grape-wine production was assessed for six different wines from the same winery in Sicily, Italy using both the newly developed methodology (V.I.V.A.) and the classical methodology proposed by the Water Footprint Network (WFN). In all cases green water was the largest contributor to WF, but the new methodology also detected differences between vines of the same winery. Furthermore, V.I.V.A. methodology assesses water body contamination by pesticides application whereas the WFN methodology considers just fertilization. This fact ended highlights the highest WF of vineyard 4 calculated by V.I.V.A. if compared with the WF calculated with WFN methodology. Comparing the WF of wine produced with grapes from the six different wines, the factors most greatly influencing the results obtained in this study were: distance from the water body, fertilization rate, amount and eco-toxicological behavior of the active ingredients used. Copyright © 2014 Elsevier B.V. All rights reserved.

  9. Case study: active learning methodology approach in corrosion and science practices

    Directory of Open Access Journals (Sweden)

    Ricardo Luiz Perez Teixeira

    2017-03-01

    Full Text Available The study evaluates a survey conducted on the last day of the course with 118 students of the last year of two undergraduate engineering courses in Brazil, it was 86 students of the 4th year (8th level or period of the metallurgical engineering course and 32 students of the 3rd year (6th level of course materials engineering, to teaching students how to use and interpret polarization curves for predictive and preventive action of corrosion and its chemical mechanisms. The time period was from February 2012 to December 2013 in just three semesters (no summer school. During the time which an educational institution holds classes was required all students to read content before and during class and then work in groups to complete problems and answer conceptual questions and practical pertaining to the material they read. Teachers spent class time answering students’ questions. These students’ post course ratings on the respondents specify their level of agreement or disagreement on a symmetric agree-disagree scale for a series of attitudes and skills competence statements using a Likert-type scale. The results indicated that the students experiencing using an active learning methodology had more confidence in their ability to perform and interpret chemical corrosion mechanisms. Additionally, these students’ attitude scores were positively. In some cases, as shown by the student experience survey, assessing students' attitudes can be an effective solution to these methodological discuss the various methodological problems faced by classroom researchers and suggest that, in some problems. Conclusions are made on ways to overcome or minimize the problems based on difficulty in learning and its chemical corrosion mechanisms through an active learning methodology approach. Keywords: Active learning methodology; Experimental practice; Corrosion; Chemistry

  10. Archaeology, historical site risk assessment and monitoring by UAV: approaches and case studies

    Science.gov (United States)

    Pecci, Antonio; Masini, Nicola

    2016-04-01

    multiple overlapping images. The usefulness of UAV-based investigations has been given by its integrability with other methods of remote sensing including geophysics, optical and SAR satellite remote sensing. The presentation deals with the methodological approaches and the results in three historical sites for different applications such as: 1) archaeological site discovery, 2) the study and observation of archaeological looting and 3) the 3d reconstruction of building and sites. In the case 1) UAV has been used for the creation of orthophotos and digital elevantion models (DEMs) as well as the identification of archaeological marks and microrelief, as proxy indicators of the presence of archaeological buried remains. The obtained information have been compared and integrated with those provided by georadar and geomagnetic prospections. The investigated site is a medieval settlement, including a benedectine monastery, dated to 12-15th century. It is San Pietro a Cellaria, located in the territory of Calvello, in Basilicata (Southern Italy). The multisensor integrated approach allowed to identify several features referable to buried structures of the monastery (Leucci et al. 2015; Roubis et al. 2015). In the case 2) UAVs have been used for the identification and analysis of traces of grave robbers, in the territory of Anzi (Basilicata). Since the end of the 18th century to the first half of the 20th century, hundreds of tombs of the Archaic, Lucan and Roman age have been destroyed and stolen. The case 3) is related to the ceremonial centre of Pachacamac in Peru, which was investigated for several years by the international mission ITACA (Italian scientific mission for heritage Conservation and Archaeogeophysics) of IBAM/IMAA CNR of Potenza (Italy) (Lasaponara et al. 2016b). For more than 2,000 years, Pachacamac was one of the main centers of religious cult keeping this role unchanged in different historical periods and for different cultures such as Chavin, Lima, Huari

  11. Case Studies of Interactive Whole-Class Teaching in Primary Science: Communicative Approach and Pedagogic Purposes

    Science.gov (United States)

    McMahon, Kendra

    2012-01-01

    By developing two case studies of expert teaching in action, this study aimed to develop knowledge of talk in whole-class teaching in UK primary science lessons and understand this in relation to both the teachers' interpretations and sociocultural theoretical frameworks. Lessons were observed and video-recorded and the teachers engaged in…

  12. Inquiring Into Iran: A Case Study Approach to the Social Sciences.

    Science.gov (United States)

    Pellicano, Roy R.

    1980-01-01

    The author suggests contemporary Iran as an excellent subject for a case study in secondary social studies. He considers some of the issues which students might analyze: journalistic bias toward Iran, pluralism in Iranian society and Islam, sociopolitical factors which affect modernizing nations, and the causes of revolution. (SJL)

  13. Youth, Social Networking, and Resistance: A Case Study on a Multidimensional Approach to Resistance

    Science.gov (United States)

    Scozzaro, David

    2011-01-01

    This exploratory case study focused on youth and resistance that was aided by the use of technology. The combination of resistance and technology expanded a multidimensional framework and leads to new insight into transformative resistance. This study examined the framework of transformative resistance based on Solorzano and Delgado Bernal's…

  14. Using Generic Inductive Approach in Qualitative Educational Research: A Case Study Analysis

    Science.gov (United States)

    Liu, Lisha

    2016-01-01

    Qualitative research strategy has been widely adopted by educational researchers in order to improve the quality of their empirical studies. This paper aims to introduce a generic inductive approach, pragmatic and flexible in qualitative theoretical support, by describing its application in a study of non-English major undergraduates' English…

  15. Problematic Incinerator Ash: A Case Study of Finding a Successful Treatment Approach

    International Nuclear Information System (INIS)

    Gering, K. L.

    1999-01-01

    The Idaho National Engineering and Environmental Laboratory (INEEL) produces incinerator flyash and bottom ash as a consequence of burning low-level radioactive waste materials at the Waste Experimental Reduction Facility (WERF). The incineration process greatly reduces original waste volumes but concentrates the metals that are present, such as toxic metals (most notably cadmium, lead, and antimony) and nuisance metals (e.g., zinc). Anion species also become predominant in flyash produced by INEEL incineration, where chloride and sulfate are at concentrations that can approach 15-20 wt% each. In addition, treatment of the WERF flyash is further complicated by a significant fraction of ignitables composed of carbon soot and various hydrocarbon species that have been measured in some cases at 30% net by Loss-on-Ignition tests. Bottom ash produced at the WERF site is generally much less toxic, if not nontoxic, as compared to the flyash. Due to the complex composition of the flyash material, stabilization attempts at the INEEL have been only partly successful, causing the effectiveness and viability of treatment methods to be revisited. Breakthroughs in flyash stabilization came in 1998 when more complete characterization data gave us further insight into the chemical and physical nature of the flyash. These breakthroughs were also facilitated by the use of a computer model for electrolytes that allowed us to simulate stabilization options prior to started laboratory studies. This paper summarizes efforts at the INEEL, spanning the past three years, that have focused on stabilizing flyash. A brief history of INEEL treatability studies is given, showing that the degree of effective flyash stabilization was proportional to the amount of meaningful characterization data that was available. Various binders have been used in these treatability studies, including Portland cement type I/II, Portland cement type V, JGC Super Cement (blast furnace slag cement), a Fluid Tech

  16. Case study research.

    Science.gov (United States)

    Taylor, Ruth; Thomas-Gregory, Annette

    2015-06-10

    This article describes case study research for nursing and healthcare practice. Case study research offers the researcher an approach by which a phenomenon can be investigated from multiple perspectives within a bounded context, allowing the researcher to provide a 'thick' description of the phenomenon. Although case study research is a flexible approach for the investigation of complex nursing and healthcare issues, it has methodological challenges, often associated with the multiple methods used in individual studies. These are explored through examples of case study research carried out in practice and education settings. An overview of what constitutes 'good' case study research is proposed.

  17. Coral reefs for coastal protection: A new methodological approach and engineering case study in Grenada.

    Science.gov (United States)

    Reguero, Borja G; Beck, Michael W; Agostini, Vera N; Kramer, Philip; Hancock, Boze

    2018-03-15

    Coastal communities in tropical environments are at increasing risk from both environmental degradation and climate change and require urgent local adaptation action. Evidences show coral reefs play a critical role in wave attenuation but relatively little direct connection has been drawn between these effects and impacts on shorelines. Reefs are rarely assessed for their coastal protection service and thus not managed for their infrastructure benefits, while widespread damage and degradation continues. This paper presents a systematic approach to assess the protective role of coral reefs and to examine solutions based on the reef's influence on wave propagation patterns. Portions of the shoreline of Grenville Bay, Grenada, have seen acute shoreline erosion and coastal flooding. This paper (i) analyzes the historical changes in the shoreline and the local marine, (ii) assess the role of coral reefs in shoreline positioning through a shoreline equilibrium model first applied to coral reef environments, and (iii) design and begin implementation of a reef-based solution to reduce erosion and flooding. Coastline changes in the bay over the past 6 decades are analyzed from bathymetry and benthic surveys, historical imagery, historical wave and sea level data and modeling of wave dynamics. The analysis shows that, at present, the healthy and well-developed coral reefs system in the southern bay keeps the shoreline in equilibrium and stable, whereas reef degradation in the northern bay is linked with severe coastal erosion. A comparison of wave energy modeling for past bathymetry indicates that degradation of the coral reefs better explains erosion than changes in climate and historical sea level rise. Using this knowledge on how reefs affect the hydrodynamics, a reef restoration solution is designed and studied to ameliorate the coastal erosion and flooding. A characteristic design provides a modular design that can meet specific engineering, ecological and

  18. Computational-experimental approach to drug-target interaction mapping: A case study on kinase inhibitors.

    Directory of Open Access Journals (Sweden)

    Anna Cichonska

    2017-08-01

    Full Text Available Due to relatively high costs and labor required for experimental profiling of the full target space of chemical compounds, various machine learning models have been proposed as cost-effective means to advance this process in terms of predicting the most potent compound-target interactions for subsequent verification. However, most of the model predictions lack direct experimental validation in the laboratory, making their practical benefits for drug discovery or repurposing applications largely unknown. Here, we therefore introduce and carefully test a systematic computational-experimental framework for the prediction and pre-clinical verification of drug-target interactions using a well-established kernel-based regression algorithm as the prediction model. To evaluate its performance, we first predicted unmeasured binding affinities in a large-scale kinase inhibitor profiling study, and then experimentally tested 100 compound-kinase pairs. The relatively high correlation of 0.77 (p < 0.0001 between the predicted and measured bioactivities supports the potential of the model for filling the experimental gaps in existing compound-target interaction maps. Further, we subjected the model to a more challenging task of predicting target interactions for such a new candidate drug compound that lacks prior binding profile information. As a specific case study, we used tivozanib, an investigational VEGF receptor inhibitor with currently unknown off-target profile. Among 7 kinases with high predicted affinity, we experimentally validated 4 new off-targets of tivozanib, namely the Src-family kinases FRK and FYN A, the non-receptor tyrosine kinase ABL1, and the serine/threonine kinase SLK. Our sub-sequent experimental validation protocol effectively avoids any possible information leakage between the training and validation data, and therefore enables rigorous model validation for practical applications. These results demonstrate that the kernel

  19. Te Kotahitanga: A Case Study of a Repositioning Approach to Teacher Professional Development for Culturally Responsive Pedagogies

    Science.gov (United States)

    Hynds, Anne; Sleeter, Christine; Hindle, Rawiri; Savage, Catherine; Penetito, Wally; Meyer, Luanna H.

    2011-01-01

    This article presents a case study of a unique New Zealand professional development programme, Te Kotahitanga, for mainstream secondary school teachers. Findings discussed are drawn from an independent evaluation of the programme across 22 secondary schools. The professional development approach attempted to reposition the relationship between…

  20. Capability Approach for well-being Evaluation in Regional Development Planning : Case Study in Magelang Regency. Central java, Indonesia

    NARCIS (Netherlands)

    Pramono, Retno Widodo Dwi

    2016-01-01

    The thesis uses Amartya Sen’s Capability Approach (1993, 2000) to devise a set of criteria to evaluate the well-being and quality of life of economic groups in a case study of Magelang, a small rural area in Central Java, Indonesia. In applying this method, the researcher examines how the spatial

  1. Two different approaches for georadar data processing: A case study in archaeological prospecting

    Science.gov (United States)

    Orlando, Luciana; Soldovieri, Francesco

    2008-03-01

    This paper deals with the application of two different processing methods of the georadar data aimed at improving the results in the case of bad quality data. The georadar data are referred to two areas located in the Axum archaeological park (Ethiopia) and were acquired prior to the reinstallation of the returned Stele from Italy to the Ethiopian Government. In the area the schist formation is covered by an outcropping sandy silt formation about 6-8 m thick. The archaeological excavations, performed before the georadar data acquisition, revealed that tombs and catacombs were dug into the superficial layer. Because the complexity of the georadar data interpretation based on standard data processing, some of the collected measured data are also processed by an innovative microwave tomographic approach which permits to achieve clearer diagnostic results with respect to the classic radaristic techniques in 2D and 3D representation. We take into account the data acquired for the East stele 2 with 100 MHz antenna and in the parking area of the archaeological park with 200 MHz antenna. The data were acquired on profiles 1 m apart. Comparing the data processed with the two different approaches, we obtained an improvement of the vertical resolution and of the quality of image on time slices using the tomographic approach compared to the results obtained with the classic radar one.

  2. Teaching Information Security with Workflow Technology--A Case Study Approach

    Science.gov (United States)

    He, Wu; Kshirsagar, Ashish; Nwala, Alexander; Li, Yaohang

    2014-01-01

    In recent years, there has been a significant increase in the demand from professionals in different areas for improving the curricula regarding information security. The use of authentic case studies in teaching information security offers the potential to effectively engage students in active learning. In this paper, the authors introduce the…

  3. An Ecosystem Approach to Invasive Species Management: An Aquatic Ecosystem Case Study

    Science.gov (United States)

    Villamagna, A. M.; Karpanty, S. M.

    2009-01-01

    College students in natural resources continue to encounter instructor-centered teaching, despite strong evidence that suggests active-learning experiences benefit students more than passive learning activities. Case studies provide an active-learning alternative to lectures by teaching students new content and challenging them to engage in…

  4. Undertaking an Ecological Approach to Advance Game-Based Learning: A Case Study

    Science.gov (United States)

    Shah, Mamta; Foster, Aroutis

    2014-01-01

    Systematic incorporation of digital games in schools is largely unexplored. This case study explored the ecological conditions necessary for implementing a game-based learning course by examining the interaction between three domains (the innovator, the innovation, and the context). From January-April 2012, one in-service teacher learned and…

  5. Gwinnett County Public Schools: A Systemic Approach to Scaling Effective School Leadership. Case Study

    Science.gov (United States)

    George W. Bush Institute, Education Reform Initiative, 2015

    2015-01-01

    There is growing awareness among educators and policymakers that effective school leaders are critical to school success and student achievement. Many studies illustrate the important benefits of effective school leadership for teachers, pointing to the significant influence on teacher satisfaction, development, and retention. This case study…

  6. An Empirical Approach to Salary Discrimination: With Case Study of Sex Discrimination in Education

    Science.gov (United States)

    Anderson, Julie A.; Murphy, Norman C.

    1977-01-01

    A statistical method to determine sex discrimination in salaries considered known differential variables which can legitimately be used to determine salary level apart from discrimination based on improper criteria, such as race, sex, religion, etc. This case study of a group of educators exemplifies salary discrimination based on sex. (Author/MV)

  7. The "Russian Doll" Approach: Developing Nested Case-Studies to Support International Comparative Research in Education

    Science.gov (United States)

    Chong, Pei Wen; Graham, Linda J.

    2013-01-01

    International comparison is complicated by the use of different terms, classification methods, policy frameworks and system structures, not to mention different languages and terminology. Multi-case studies can assist in the understanding of the influence wielded by cultural, social, economic, historical and political forces upon educational…

  8. Evaluation of bioaugmentation using multiple life cycle assessment approaches: A case study of constructed wetland.

    Science.gov (United States)

    Zhao, Xinyue; Yang, Jixian; Zhang, Xuedong; Wang, Li; Ma, Fang

    2017-11-01

    Bioaugmentation is a promising technology to enhance the removal of specific pollutants; however, environmental impacts of implementing bioaugmentation have not been considered in most studies. Appropriate methodology is required for the evaluation from both in-depth and comprehensive perspectives, which leads to this study initiating the application of life cycle assessment (LCA) of bioaugmentation. Two LCA methods (CML and e-Balance) were applied to a bioaugmentation case with the aim of illustrating how to evaluate the environmental impacts of bioaugmentation from different perspectives based on the selection of different LCA methods. The results of the case study demonstrated that the LCA methods with different methodology emphasis produced different outcomes, which could lead to differentiated optimization strategies depending on the associated perspectives. Furthermore, three important aspects are discussed, including coverage of impact categories, the selection of characterization modeling for specific pollutants, and the requirement of including economic indicators for future investigation. Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. Combining statistical learning with a knowledge-based approach: A case study in intensive care monitoring

    OpenAIRE

    Morik, Katharina; Brockhausen, Peter; Joachims, Thorsten

    1999-01-01

    The paper describes a case study in combining different methods for acquiring medical knowledge. Given a huge amount of noisy, high dimensional numerical time series data describing patients in intensive care, the support vector machine is used to learn when and how to change the dose of which drug. Given medical knowledge about and expertise in clinical decision making, a first-order logic knowledge base about effects of therapeutical interventions has been built. As a preprocessing mechanis...

  10. Evaluating Approaches to Teaching and Learning Chinese Vocabulary from the Learning Theories Perspective: An Experimental Case Study

    Directory of Open Access Journals (Sweden)

    Katja SIMONČIČ

    2015-06-01

    Full Text Available With Chinese language gaining more and more popularity among Slovenian students and with the growing numbers of learners of Chinese as a foreign language in Slovenia and elsewhere it is crucial to find an approach that will lead to high quality and long-term knowledge of Chinese and that will motivate learners to continue learning. We can speak of two basic approaches to teaching Chinese vocabulary: the approach that first introduces pronunciation and the approach that simultaneously introduces pronunciation and character. The key question that arises is which of the two approaches leads to high quality and long-term knowledge? To answer the question an experimental case study was carried out at Ljubljana’s Faculty of Arts in the academic year 2011/2012. The case study showed that the approach that simultaneously introduces pronunciation and character and is based on the key principles of constructivist learning theory had beneficial effects on the students in terms of motivation and quality of knowledge of Chinese vocabulary.

  11. A MECHATRONIC CASE STUDY HIGHLIGHTING THE NEED FOR RE-THINKING THE DESIGN APPROACH

    DEFF Research Database (Denmark)

    Torry-Smith, Jonas; Mortensen, Niels Henrik

    2011-01-01

    of these aspects are illustrated by a case study. A literature study is performed regarding how well the seven aspects have been covered in the literature. It reveals that some suggestions for support can be found in terms of semi-formal modelling suggestions and proposal for procedures, but that the context......Developing mechatronic products is a great challenge for many companies due to the multi-disciplinary nature of the development process. In this article the main objective is an investigation of seven aspects related to the synthesis process of developing mechatronic products. The role and effects...

  12. Mathematical modelling with case studies a differential equations approach using Maple and Matlab

    CERN Document Server

    Barnes, B

    2011-01-01

    ""The book is written in a very lucid manner, with numerous case studies and examples thoroughly discussed. The material is very well organized, generously illustrated, and delightfully presented. All chapters, except the first one, conclude with scores of nicely designed exercises that can be used for independent study. The book contains enough material to organize a new well-structured one-semester course or to complement the existing one with additional examples and problems and is highly recommended for either purpose""-Zentralblatt MATH, 1168""… The book can be useful for students of math

  13. The Intensive Dysphagia Rehabilitation Approach Applied to Patients With Neurogenic Dysphagia: A Case Series Design Study.

    Science.gov (United States)

    Malandraki, Georgia A; Rajappa, Akila; Kantarcigil, Cagla; Wagner, Elise; Ivey, Chandra; Youse, Kathleen

    2016-04-01

    To examine the effects of the Intensive Dysphagia Rehabilitation approach on physiological and functional swallowing outcomes in adults with neurogenic dysphagia. Intervention study; before-after trial with 4-week follow-up through an online survey. Outpatient university clinics. A consecutive sample of subjects (N=10) recruited from outpatient university clinics. All subjects were diagnosed with adult-onset neurologic injury or disease. Dysphagia diagnosis was confirmed through clinical and endoscopic swallowing evaluations. No subjects withdrew from the study. Participants completed the 4-week Intensive Dysphagia Rehabilitation protocol, including 2 oropharyngeal exercise regimens, a targeted swallowing routine using salient stimuli, and caregiver participation. Treatment included hourly sessions twice per week and home practice for approximately 45 min/d. Outcome measures assessed pre- and posttreatment included airway safety using an 8-point Penetration Aspiration Scale, lingual isometric pressures, self-reported swallowing-related quality of life (QOL), and level of oral intake. Also, patients were monitored for adverse dysphagia-related effects. QOL and adverse effects were also assessed at the 4-week follow-up (online survey). The Intensive Dysphagia Rehabilitation approach was effective in improving maximum and mean Penetration Aspiration Scale scores (PDysphagia Rehabilitation approach was safe and improved physiological and some functional swallowing outcomes in our sample; however, further investigation is needed before it can be widely applied. Copyright © 2016 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

  14. The GeoCitizen-approach: community-based spatial planning – an Ecuadorian case study

    Science.gov (United States)

    Atzmanstorfer, Karl; Resl, Richard; Eitzinger, Anton; Izurieta, Xiomara

    2014-01-01

    Over the last years, geospatial web platforms, social media, and volunteered geographic information (VGI) have opened a window of opportunity for traditional Public Participatory GIS (PPGIS) to usher in a new era. Taking advantage of these technological achievements, this paper presents a new approach for a citizen-orientated framework of spatial planning that aims at integrating participatory community work into existing decision-making structures. One major cornerstone of the presented approach is the application of a social geoweb platform (the GeoCitizen platform) that combines geo-web technologies and social media in one single tool allowing citizens to collaboratively report observations, discuss ideas, solve, and monitor problems in their living environment at a local level. This paper gives an account of an ongoing participatory land-zoning process in the Capital District of Quito, Ecuador, where the GeoCitizen platform is applied in a long-term study. PMID:27019644

  15. The GeoCitizen-approach: community-based spatial planning - an Ecuadorian case study.

    Science.gov (United States)

    Atzmanstorfer, Karl; Resl, Richard; Eitzinger, Anton; Izurieta, Xiomara

    2014-05-27

    Over the last years, geospatial web platforms, social media, and volunteered geographic information (VGI) have opened a window of opportunity for traditional Public Participatory GIS (PPGIS) to usher in a new era. Taking advantage of these technological achievements, this paper presents a new approach for a citizen-orientated framework of spatial planning that aims at integrating participatory community work into existing decision-making structures. One major cornerstone of the presented approach is the application of a social geoweb platform (the GeoCitizen platform) that combines geo-web technologies and social media in one single tool allowing citizens to collaboratively report observations, discuss ideas, solve, and monitor problems in their living environment at a local level. This paper gives an account of an ongoing participatory land-zoning process in the Capital District of Quito, Ecuador, where the GeoCitizen platform is applied in a long-term study.

  16. Perceptions of Students for Gamification Approach: Kahoot as a Case Study

    Directory of Open Access Journals (Sweden)

    Huseyin Bicen

    2018-02-01

    Full Text Available A novel learning experience that increases student motivation can be created in a learning environment that includes a gamification approach to assess competence. Student views on gamification were surveyed to determine the best application of this method, the environment necessary for its use, and the manner by which the application should proceed. The effect of a gamification approach on student achievement through intra-class competition was assessed using quantitative and qualitative methods. In this study, the Kahoot application was the preferred gamification method used. Participating students included 65 undergraduate students studying at the Department of Preschool Teaching. The findings showed that inclusion of a gamification method increased the interest of students in the class, and increased student ambitions for success. This method was also found to have a positive impact on student motivation. Furthermore, the results of this study indicate that the Kahoot application can be used effectively for gamification of lessons. In conclusion, the gamification method has an impact on students that renders them more ambitious and motivated to study.

  17. Technical Approach and Results from the Fuels Pathway on an Alternative Selection Case Study

    Energy Technology Data Exchange (ETDEWEB)

    Bob Youngblood; Curtis Smith

    2013-09-01

    The report presents a detailed plan for conducting case studies to characterize probabilistic safety margins associated with different fuel cladding types in a way that supports a valid comparison of different fuels' performance. Recent work performed in other programs is described briefly and used to illustrate the challenges posed by characterization of margin in a probabilistic way. It is additionally pointed out that consistency of evaluation of performance across different cladding types is not easy to assure; a process for achieving the needed consistency is described.

  18. Productivity improvement in the production line with lean manufacturing approach: case study PT. XYZ

    OpenAIRE

    diah Halimatussa’; Parkhan Ali; Sugarindra Muchamad

    2018-01-01

    The increaseing productivity is one of the competitive strategies that can be applied in a company in order to survive in an intense competitive presure. PT. XYZ is a textile industry manufacturing golf gloves and caddy bag. Every day, the company has a production target of 600 pieces per line. However, the desired target is not achieved that it will affect the delay in delivery of products to customers. In this research, a case study on implementing value stream mapping and Kaizen as the lea...

  19. Innovative Financial Approach for Agricultural Sustainability: A Case Study of Alibaba

    Directory of Open Access Journals (Sweden)

    Qi Zhou

    2018-03-01

    Full Text Available Sustainability and agricultural finance are two important issues attracting attention from industry and academia. This research adopts an in-depth case study methodology to investigate the agricultural finance initiatives of Alibaba Group, and explores how the agricultural finance practices of an e-commerce platform facilitate its sustainability goal. A reference framework is proposed to prove the adoption of agricultural finance. The influence of three moderating variables, namely, IT support, financial attractiveness, and cooperation with other entities, is analyzed. We find that advanced IT support and financial attractiveness are two indispensable enablers for agricultural finance initiatives, and collaboration with other entities is necessary in adopting agricultural supply chain finance.

  20. Mining and territory: theoretical approaches to the field of environmental history through a case study

    Directory of Open Access Journals (Sweden)

    Francesco Panico

    2018-09-01

    Full Text Available This article aims to outline an epistemological framework for placing the field of environmental history in the context of the current endeavor of social sciences and humanities. The methodology used is defined here as “metabolic landmarks” because it is inspired by the approach of social metabolism. The results suggest that, in the study of environmental history, the specific historiographical object plays an essential role in defining the epistemic context of that hybrid field of historiography and, more generally, of social and environmental analyses.

  1. Occupation-based family-centered therapy approach for young children with feeding problems in South Korea; a case study.

    Science.gov (United States)

    An, Sun-Joung L

    2014-03-01

    Documenting the effectiveness of an occupation-based family-centered therapy approach, when providing therapy for a young child with feeding problems, is needed in a culture such as Korea, which has a strong medical model of service. A case study was conducted involving a 16-month-old boy with feeding problems. An occupation-based family-centered therapy approach was carried out for 10 weeks. The results indicated that this approach addressed the physical components of the child's feeding problems and also the parent-child bonding, which together improved the overall family dynamics. Although these results may stimulate clinicians to consider an alternative approach to a medical model, further research with a larger sample is needed to provide sufficient evidence for therapists to shift to a new service delivery model. Copyright © 2013 John Wiley & Sons, Ltd.

  2. Analysis of eco-innovation with triple helix approach: case-study of biofloc catfish farming in Yogyakarta

    Science.gov (United States)

    Purwadi, D.; Nurlaily, I.

    2018-03-01

    Concerning environmental into focus of innovation process will expand the number of actor involved. Eco-innovation and triple helix are often frameworks applied to analyse how environmental concern are integrated in innovation process and how different stakeholder groups are having inter relation. Case study from biofloc catfish farming in Yogyakarta is presented to demonstrate a possible approach for researching the success of triple helix frameworks. This case is considered on basic of the result of a survey among farmers, academician and government. The paper concludes the creating of full triple helix encounters problem in practice. It also includes suggestion for further research on fisheries development.

  3. Large-Scale Participation: A Case Study of a Participatory Approach to Developing a New Public Library

    DEFF Research Database (Denmark)

    Dalsgaard, Peter; Eriksson, Eva

    2013-01-01

    In this paper, we present a case study of a participatory project that focuses on interaction in large-scale design, namely, the development of the new Urban Mediaspace Aarhus. This project, which has been under way for ten years, embodies a series of issues that arise when participatory design...... approaches are applied to large-scale, IT-oriented projects. At the same time, it highlights the issues public knowledge institutions face, when interactive technologies challenge their fundamental roles and practices; by extension, this case offers examples of how these challenges may be explored...

  4. Fuzzy Continuous Review Inventory Model using ABC Multi-Criteria Classification Approach: A Single Case Study

    Directory of Open Access Journals (Sweden)

    Meriastuti - Ginting

    2015-06-01

    Full Text Available Abstract. Inventory is considered as the most expensive, yet important,to any companies. It representsapproximately 50% of the total investment. Inventory cost has become one of the majorcontributorsto inefficiency, therefore it should be managed effectively. This study aims to propose an alternative inventory model, by using ABC multi-criteria classification approach to minimize total cost. By combining FANP (Fuzzy Analytical Network Process and TOPSIS (Technique of Order Preferences by Similarity to the Ideal Solution, the ABC multi-criteria classification approach identified 12 items of 69 inventory items as “outstanding important class” that contributed to 80% total inventory cost. This finding is then used as the basis to determine the proposed continuous review inventory model.This study found that by using fuzzy trapezoidal cost, the inventory turnover ratio can be increased, and inventory cost can be decreased by 78% for each item in “class A” inventory. Keywords:ABC multi-criteria classification, FANP-TOPSIS, continuous review inventory model lead-time demand distribution, trapezoidal fuzzy number

  5. An Integrated Approach to Mitigation Wetland Site Selection: A Case Study in Gwacheon, Korea

    Directory of Open Access Journals (Sweden)

    Junga Lee

    2015-03-01

    Full Text Available This paper presents an integrated approach to mitigation wetland site selection using functional landscape connectivity and landscape structure. This approach enables landscape designers to evaluate the relative priorities of mitigation wetland areas based on functional landscape connectivity and wildlife mobility, as well as landscape structure, composition, and configuration. The least-cost path method is used to evaluate candidate sites for mitigation wetlands with regard to wildlife movement. A set of assessments for landscape indices using FRAGSTATS was applied to identify suitable mitigation wetland areas on the basis of landscape connectivity, composition, and configuration. The study was conducted in Gwacheon, Korea, where there are plans for regional development that will change the landscape. In the first step, a group of 14 candidate sites is identified via analysis of functional landscape connectivity using the least-cost path method. In the second step, candidate mitigation wetland areas are ranked according to landscape connectivity and composition. The five mitigation wetland areas that were found to be suitable were analyzed based on landscape configuration at the class level. This study demonstrates that functional landscape connectivity and landscape structure are important aspects to consider when identifying suitable sites for mitigation wetland planning and restoration.

  6. Fuzzy Continuous Review Inventory Model using ABC Multi-Criteria Classification Approach: A Single Case Study

    Directory of Open Access Journals (Sweden)

    Meriastuti - Ginting

    2015-07-01

    Full Text Available Abstract. Inventory is considered as the most expensive, yet important,to any companies. It representsapproximately 50% of the total investment. Inventory cost has become one of the majorcontributorsto inefficiency, therefore it should be managed effectively. This study aims to propose an alternative inventory model,  by using ABC multi-criteria classification approach to minimize total cost. By combining FANP (Fuzzy Analytical Network Process and TOPSIS (Technique of Order Preferences by Similarity to the Ideal Solution, the ABC multi-criteria classification approach identified 12 items of 69 inventory items as “outstanding important class” that contributed to 80% total inventory cost. This finding  is then used as the basis to determine the proposed continuous review inventory model.This study found that by using fuzzy trapezoidal cost, the inventory  turnover ratio can be increased, and inventory cost can be decreased by 78% for each item in “class A” inventory.Keywords:ABC multi-criteria classification, FANP-TOPSIS, continuous review inventory model lead-time demand distribution, trapezoidal fuzzy number 

  7. Intermediaries in the Music Industry: A Case Study Approach Focusing on the United Kingdom and South Korea

    OpenAIRE

    Dyson, Alex

    2014-01-01

    Spulber (1996: 135) states that intermediaries are “market players whose activities create and manage markets by acting as intermediaries between buyers and sellers”. Intermediaries are involved in the careers of all acts that enter the modern music industry. The amount of success an act achieves internationally and domestically is determined by the inputs of various intermediaries. To determine the extent of the effect that intermediaries have on the success of acts, a case study approach...

  8. Agile software development and its compatibility with a document-driven approach? A case study

    DEFF Research Database (Denmark)

    Heeager, Lise Tordrup; Nielsen, Peter Axel

    2009-01-01

    however have a desire to adopt agile development processes while maintaining compliance with a quality assurance standard or even a process standard. We have studied the software development process of a Danish pharmaceutical company. For market reasons the company has to comply the US Food and Drug......It is generally assumed among software developers and managers that a document-driven development process is incompatible with an agile development process. There are few reports on this issue and even less empirical research documenting the assumed incompatibility. More and more software companies...... that despite much effort the agile development process suffers from its adaptation to the FDA standard, but at the same time many of the genuine qualities of an agile process have been maintained. From this case study we discuss the implications for development companies facing the challenge of implementing...

  9. Productivity improvement in the production line with lean manufacturing approach: case study PT. XYZ

    Directory of Open Access Journals (Sweden)

    diah Halimatussa’

    2018-01-01

    Full Text Available The increaseing productivity is one of the competitive strategies that can be applied in a company in order to survive in an intense competitive presure. PT. XYZ is a textile industry manufacturing golf gloves and caddy bag. Every day, the company has a production target of 600 pieces per line. However, the desired target is not achieved that it will affect the delay in delivery of products to customers. In this research, a case study on implementing value stream mapping and Kaizen as the lean manufacturing concept is reported. The purpose of this study is to map the current production line, analyse and design the future value stream mapping by eliminating waste occured. It is obtained a lead time reduction as much as 440.4 seconds through eliminating 17 non-value added activities. Then, the output can be increased up to 21% which is equal to 502 pieces.

  10. Adoption Assessment of Internet Usage Amongst Undergraduates In Nigeria Universities -A Case Study Approach

    Directory of Open Access Journals (Sweden)

    Michael Olusesan Awoleye

    2008-04-01

    Full Text Available This study focused on the level of penetration of Internet usage among undergraduate students in Nigeria using Obafemi Awolowo University as a case study. Result showed that about 92% of undergraduate students have embraced the Internet and are using it consistently. The online mean time is 3.5hrs/week while on the average, undergraduate experience of Internet usage is about 4years. We found also that the students use the Internet mostly for e-mail, information search and online chatting; all of these were found to have significant impact on their academics and social life. Further analysis revealed that gender attitude is also an important issue; male students appear to use the Internet more than their female counterparts; just as science based students use it more than the non-science based students. The paper therefore recommends appropriate policies for all higher schools of learning in Nigeria to facilitate further diffusion and use of the Internet.

  11. Cross-border cooperation potential in fostering redevelopment of degraded border areas - a case study approach.

    Science.gov (United States)

    Alexandre Castanho, Rui; Ramírez, Beatriz; Loures, Luis; Fernández-Pozo, Luis; Cabezas, José

    2017-04-01

    Border interactions have reached unprecedented levels in recent decades, not only due to their potential for territorial integration but also considering their role in supranational processes, such as landscape reclamation, infrastructure development and land use planning on European territory. In this scenario, successful examples related to the redevelopment of degraded areas have been showing positive impacts at several levels, such as the social, economic, environmental and aesthetic ones which have ultimately related this process, positively, to sustainability issues. However, concerning to border areas, and due to their inherent legislative and bureaucratic conflicts, the intervention in these areas is more complex. Still, and taking into account previously developed projects and strategies of cross-border cooperation (CBC) in European territory it is possible to identified that the definition of common master plans and common objectives are critical issues to achieve the desired territorial success. Additionally, recent studies have put forward some noteworthy ideas highlighting that it is possible to establish a positive correlation between CBC processes and an increasing redevelopment of degraded border areas, with special focus on the reclamation of derelict landscapes fostering soil reuse and redevelopment. The present research, throughout case study analysis at the Mediterranean level - considering case studies from Portugal, Spain, Monaco and Italy - which presents specific data on border landscape redevelopment, enables us to conclude that CBC processes have a positive influence on the potential redevelopment of degraded border areas, considering not only urban but also rural land. Furthermore, this paper presents data obtained through a public participation process which highlights that these areas present a greater potential for landscape reclamation, fostering resource sustainability and sustainable growth. Keywords: Spatial planning; Land

  12. Towards a structured approach to Strategic Environmental Assessment: A case study of Canadian energy policy alternatives

    Science.gov (United States)

    Noble, Bram F.

    Considerable attention has been given to the role of Strategic Environmental Assessment (SEA) in policy, plan and program (PPP) assessment; however, there is still very little consensus on appropriate methodologies for SEA. Despite calls for SEA to develop more independently of project-level assessment, existing SEA methodologies still tend to be based on project-level EIA principles, rather than also on a trickling down of objectives of broader environmental policy. This thesis argues that if SEA is to advance in application and effectiveness then a different, but structured methodological framework is required. While SEA can perhaps utilize many of the existing methods and techniques from project-level assessment, the types of questions being addressed in strategic assessment are inherently different from those in project-level assessment. Accordingly, a different methodological assessment framework is required for SEA. The emphasis of strategic assessment is on the development of an appropriate strategy for action, addressing alternative courses of action, rather than the assessment of the potential impacts of a pre-determined option. In order to accomplish this, SEA methodology must be more broad brush than project-level assessment in order to allow the assessment of both the more general policy issues and the more technical plan and program issues. Similar to project-level assessment, however, a structured framework is desired in order to facilitate a more systematic and replicable assessment process. This thesis develops a structured, generic seven-phase assessment framework to guide SEA application. The framework is demonstrated through a case study SEA of potential Canadian energy policy alternatives. Through the use of a modified policy-type Delphi and multi-criteria analytical methods, alternative options for Canadian energy policy are evaluated and the 'best practicable environmental option' is determined. While the geographic scale of the case study and

  13. Integrated vibration-based maintenance: an approach for continuous reduction in LCC. A case study

    Energy Technology Data Exchange (ETDEWEB)

    Najjar, B. [ER Konsult Utveckling AB, Vaexjoe (Sweden)

    1998-12-31

    The biggest thread in achieving and maintaining high equipment effectiveness can be stated as: whether the improved manufacturing processes capable of producing quality products at a competitive cost. The effect of a new vibration-based maintenance concept, called Total Quality Maintenance (TQMain), is introduced. It aims to make intensive use of the real-time data acquisition and analysis to detect causes behind product quality deviation and failures in machinery, and following defect development at an early stage to increase machine mean effective life and improve company`s economics. The effect of TQMain on LCC of machinery and company`s economics is discussed. A case study to reveal savings in maintenance cost when a vibration-based policy involved, is presented. Using TQMain, company`s economics can be improved effectively through continuous improvement of the technical and economic effectiveness of production processes. (orig.) 14 refs.

  14. Case study: a novel biomechanical approach for evaluating extended body armor systems.

    Science.gov (United States)

    Selinger, Jessica C; Gooyers, Chad E; Stevenson, Joan M; Costigan, Patrick A; Chafe, Gabrielle S

    2010-11-01

    To combat the devastating effects of improvised explosive devices (IEDs), body armor that provides extended coverage has been developed. However, this extended coverage increases the armor's weight and may restrict movement. Throughout this case study, a novel technique to assess several armor systems was investigated. Four soldiers performed shoulder and trunk movements while wearing each of the six different armor inserts. Electromyography (EMG) was used to quantify muscular activity and inertial motion sensors were used to determine joint range of motion (ROM). Outcome measures included maximum ROM, integrated EMG, and the soldiers' subjective rankings. For the shoulder tasks, objective ROM and EMG measures were related to each other as well as to subjective rankings and armor material properties. Conversely, little agreement was found between measures for the trunk tasks. Results of this preliminary investigation indicate that combining shoulder ROM and EMG measures has the potential to provide an objective assessment of body armor systems.

  15. Is there Needed an Industry Approach on Corporate Default Risk? Case Study on Companies Listed on Romanian Stock Exchange

    Directory of Open Access Journals (Sweden)

    Cristina Maria Triandafil

    2009-02-01

    Full Text Available This paper focuses on applying Black and Scholes structural approach on credit risk in the case of the companies listed on Romanian Stock Exchange. We conduct a case-study on 35 companies belonging to five industries (energetic, materials, chemistry, pharmaceuticals, equipments during a period of 10 years in order to highlight out default point/threshold and its essential factors evolution across industries. Research approach is concentrated also on the specific characteristics of the Romanian capital market (especially in terms of illiquidity and lack of transparency additional costs, macroeconomic environment and corporate finance decision process. We compute default point from the perspective of the arbitrage between assets and leverage; in accordance with the most recent theories on specific features corporate default within emerging countries (Galytskyy, 2006, a key element will be represented by the assets volatility which will be correlated with the country risk premium in order to highlight out a potential macroeconomic impact on corporate failure.

  16. Systematic Approach to Remediation in Basic Science Knowledge for Preclinical Students: A case study

    Science.gov (United States)

    Amara, Francis

    Remediation of pre-clerkship students for deficits in basic science knowledge should help them overcome their learning deficiencies prior to clerkship. However, very little is known about remediation in basic science knowledge during pre-clerkship. This study utilized the program theory framework to collect and organize mixed methods data of the remediation plan for pre-clerkship students who failed their basic science cognitive examinations in a Canadian medical school. This plan was analyzed using a logic model narrative approach and compared to literature on the learning theories. The analysis showed a remediation plan that was strong on governance and verification of scores, but lacked: clarity and transparency of communication, qualified remedial tutors, individualized diagnosis of learner's deficits, and student centered learning. Participants admitted uncertainty about the efficacy of the remediation process. A remediation framework is proposed that includes student-centered participation, individualized learning plan and activities, deliberate practice, feedback, reflection, and rigorous reassessment.

  17. Approaching the Kyoto targets: a case study for Basilicata region (Italy)

    Energy Technology Data Exchange (ETDEWEB)

    Salvia, M.; Cuomo, V. [Consiglio Nazionale delle Ricerche, Tito Scalo (Italy). Istituto di Metodologie per l' Analisi Ambientale; Pietrapertosa, F. [Consiglio Nazionale delle Ricerche, Tito Scalo (Italy). Istituto di Metodologie per l' Analisi Ambientale; Universita degli Studi della Basilicata, Potenza (Italy). Dip. di Ingegneria e Fisica dell' Ambiente; Cosmi, C. [Consiglio Nazionale delle Ricerche, Tito Scalo (Italy). Istituto di Metodologie per l' Analisi Ambientale; Istituto Nazionale di Fisica della Materia, Napoli (Italy); Macchiato, M. [Universita Federico II, Napoli (Italy). Dip. di Scienze Fisiche

    2004-02-01

    Approaching the national Kyoto Protocol (KP) targets involves a re-definition of the actual configuration of local energy systems. This study deals with a local scale application of the IEA-MARKAL models generator, in which the anthropogenic system of Basilicata Region (Southern Italy) is investigated to support the definition of coherent long- term strategies and sound climate protection policies. A scenario by scenario analysis points out the behaviour of the optimal mix of fuels and technologies in the presence of carbon dioxide emissions constraints. Trade off curves and reduced costs analyses outline the most effective actions for contributing to the national KP targets, with particular emphasis on the interventions in Civil (Residential, Commercial and Services) and waste management sectors. (author)

  18. COMPARABLE VALUATION METHOD A NEW APPROACH. CASE STUDY: A ROMANIAN FLEXOGRAPHIC PRINTING FIRM

    Directory of Open Access Journals (Sweden)

    Kovacs Imola

    2010-12-01

    Full Text Available This study presents the valuation scheme of a flexographic printing industry firm. The industry, the technology used and most importantly the firm being young ones, it is not possible to use the classical comparable valuation methods. The new approach in this matter is to use as benchmark financial ratios not those related to the price of the firm (as P/E, P/S, P/BV, P/CF, P/CAPEX, but those related to the structure of the income statement, financial and operating leverage using 13 Romanian and 6 Hungarian reference firms data. Our main contribution to this line of research is to solve the problem of lack of reference data regarding the price, the benchmark companies not being listed on any stock exchange.

  19. Integrated Approaches to Testing and Assessment: OECD Activities on the Development and Use of Adverse Outcome Pathways and Case Studies.

    Science.gov (United States)

    Sakuratani, Yuki; Horie, Masashi; Leinala, Eeva

    2018-01-09

    The Organisation for Economic Co-operation and Development (OECD) works with member countries and other stakeholders to improve and harmonize chemical assessment methods. In 2012, the OECD Adverse Outcome Pathways (AOPs) Development Programme started. The Programme has published six AOPs thus far and more than 60 AOPs are under various stages of development under the Programme. This article reviews recent OECD activities on the use of AOPs in developing Integrated Approaches to Testing and Assessments (IATAs). The guidance document for the use of AOPs in developing IATA, published in 2016, provides a framework for developing and using IATA and describes how IATA can be based on an AOP. The guidance document on the reporting of defined approaches to be used within IATA, also published in 2016, provides a set of principles for reporting defined approaches to testing and assessment to facilitate their evaluation. In the guidance documents, the AOP concept plays an important role for building IATA approaches in a science-based and transparent way. In 2015, the IATA Case Studies Project was launched to increase experience with the use of IATA and novel hazard methodologies by developing case studies, which constitute examples of predictions that are fit-for-regulatory use. This activity highlights the importance of international collaboration for harmonizing and improving chemical safety assessment methods. © 2018 Nordic Association for the Publication of BCPT (former Nordic Pharmacological Society).

  20. Evaluation of a practical expert defined approach to patient population segmentation: a case study in Singapore

    Directory of Open Access Journals (Sweden)

    Lian Leng Low

    2017-11-01

    Full Text Available Abstract Background Segmenting the population into groups that are relatively homogeneous in healthcare characteristics or needs is crucial to facilitate integrated care and resource planning. We aimed to evaluate the feasibility of segmenting the population into discrete, non-overlapping groups using a practical expert and literature driven approach. We hypothesized that this approach is feasible utilizing the electronic health record (EHR in SingHealth. Methods In addition to well-defined segments of “Mostly healthy”, “Serious acute illness but curable” and “End of life” segments that are also present in the Ministry of Health Singapore framework, patients with chronic diseases were segmented into “Stable chronic disease”, “Complex chronic diseases without frequent hospital admissions”, and “Complex chronic diseases with frequent hospital admissions”. Using the electronic health record (EHR, we applied this framework to all adult patients who had a healthcare encounter in the Singapore Health Services Regional Health System in 2012. ICD-9, 10 and polyclinic codes were used to define chronic diseases with a comprehensive look-back period of 5 years. Outcomes (hospital admissions, emergency attendances, specialist outpatient clinic attendances and mortality were analyzed for years 2012 to 2015. Results Eight hundred twenty five thousand eight hundred seventy four patients were included in this study with the majority being healthy without chronic diseases. The most common chronic disease was hypertension. Patients with “complex chronic disease” with frequent hospital admissions segment represented 0.6% of the eligible population, but accounted for the highest hospital admissions (4.33 ± 2.12 admissions; p < 0.001 and emergency attendances (ED (3.21 ± 3.16 ED visits; p < 0.001 per patient, and a high mortality rate (16%. Patients with metastatic disease accounted for the highest specialist outpatient

  1. Predicting new indications of compounds with a network pharmacology approach: Liuwei Dihuang Wan as a case study.

    Science.gov (United States)

    Wang, Yin-Ying; Bai, Hong; Zhang, Run-Zhi; Yan, Hong; Ning, Kang; Zhao, Xing-Ming

    2017-11-07

    With the ever increasing cost and time required for drug development, new strategies for drug development are highly demanded, whereas repurposing old drugs has attracted much attention in drug discovery. In this paper, we introduce a new network pharmacology approach, namely PINA, to predict potential novel indications of old drugs based on the molecular networks affected by drugs and associated with diseases. Benchmark results on FDA approved drugs have shown the superiority of PINA over traditional computational approaches in identifying new indications of old drugs. We further extend PINA to predict the novel indications of Traditional Chinese Medicines (TCMs) with Liuwei Dihuang Wan (LDW) as a case study. The predicted indications, including immune system disorders and tumor, are validated by expert knowledge and evidences from literature, demonstrating the effectiveness of our proposed computational approach.

  2. A Case Study Approach to Reducing the Risks of Child Sexual Exploitation (CSE).

    Science.gov (United States)

    Berry, Lauren Janine; Tully, Ruth J; Egan, Vincent

    2017-10-01

    The risk of child sexual exploitation is a growing concern, both within community and child care settings. Within community services working with vulnerable young people, the risks of exploitation are pervasive and present a constant management problem for professionals. This makes the need for focused educational interventions within such settings all the more vital. This case study aims to describe the assessment, formulation, intervention, and outcomes of a young female considered to be at risk of sexual exploitation. It was hypothesised that, after completion of a psychoeducational group designed to enhance knowledge and skills around child sexual exploitation, positive outcomes would be seen in psychometric assessment, risk-taking behavior, and risk awareness. Results demonstrated no clinically significant change for measures of impulsivity, resourcefulness, or self-reported difficulties. A significant increase was seen for self-reported self-esteem, and all outcomes revealed a positive direction of change. Observational accounts of behavioral and attitudinal change produced more positive results, revealing an increase in prosocial behaviors and a reduction in risk-taking behaviors. Outcomes are discussed in relation to the individual's history and the residential care environment. Implications for future research and practice are outlined, and the study limitations are considered.

  3. Application of Lean-Six Sigma Approach in a Laboratory Experimental Case Study

    Directory of Open Access Journals (Sweden)

    Hashim Raza Rizvi

    2013-12-01

    Full Text Available Laboratory experiments are a conventional activity performed at academic institutions, government and private organizations. These experimental studies provide the basis for new inventions in the field of science and engineering. Laboratory experiments are conducted on the basis of provided guidelines, already established by different standard organizations like ASTM, AASHTO etc. This article is based on a case study in which the process of an experiment is examined on the basis of Value Stream Maps (VSM and potential improvement possibilities have been identified. After determining the potential waste, appropriate Lean tools are selected to implement and observe the improvements. The process is examined after application of the Lean tools and a comparison is performed. University laboratory environment can be improved considerably by applying Lean Tools. MUDA application reduced the total work time from 90.75 hours and 10-CD to 63.75 hours and 7-CD hence saving, 27 hours and 3-CD for one experiment. This is remarkable achievement of this application. Heijunka application provided the students equal workload and they performed explicitly better than they used to. 5-S tool provided the students the opportunity to manage the laboratory in an effective and clean way. Safety of the students is a very major concern at university laboratory environment. 5-S not only upgraded the laboratory overall performance, but it significantly raised the safety standards of the laboratory. More application of the Lean Tools should be exercised explored to have more effective and efficient university laboratory experimental environment.

  4. How efficient are Greek hospitals? A case study using a double bootstrap DEA approach.

    Science.gov (United States)

    Kounetas, Kostas; Papathanassopoulos, Fotis

    2013-12-01

    The purpose of this study was to measure Greek hospital performance using different input-output combinations, and to identify the factors that influence their efficiency thus providing policy makers with valuable input for the decision-making process. Using a unique dataset, we estimated the productive efficiency of each hospital through a bootstrapped data envelopment analysis (DEA) approach. In a second stage, we explored, using a bootstrapped truncated regression, the impact of environmental factors on hospitals' technical and scale efficiency. Our results reveal that over 80% of the examined hospitals appear to have a technical efficiency lower than 0.8, while the majority appear to be scale efficient. Moreover, efficiency performance differed with inclusion of medical examinations as an additional variable. On the other hand, bed occupancy ratio appeared to affect both technical and scale efficiency in a rather interesting way, while the adoption of advanced medical equipment and the type of hospital improves scale and technical efficiency, correspondingly. The findings of this study on Greek hospitals' performance are not encouraging. Furthermore, our results raise questions regarding the number of hospitals that should operate, and which type of hospital is more efficient. Finally, the results indicate the role of medical equipment in performance, confirming its misallocation in healthcare expenditure.

  5. Six Sigma Approach to Improve Stripping Quality of Automotive Electronics Component – a case study

    Science.gov (United States)

    Razali, Noraini Mohd; Murni Mohamad Kadri, Siti; Con Ee, Toh

    2018-03-01

    Lacking of problem solving skill techniques and cooperation between support groups are the two obstacles that always been faced in actual production line. Inadequate detail analysis and inappropriate technique in solving the problem may cause the repeating issues which may give impact to the organization performance. This study utilizes a well-structured six sigma DMAIC with combination of other problem solving tools to solve product quality problem in manufacturing of automotive electronics component. The study is concentrated at the stripping process, a critical process steps with highest rejection rate that contribute to the scrap and rework performance. The detail analysis is conducted in the analysis phase to identify the actual root cause of the problem. Then several improvement activities are implemented and the results show that the rejection rate due to stripping defect decrease tremendously and the process capability index improved from 0.75 to 1.67. This results prove that the six sigma approach used to tackle the quality problem is substantially effective.

  6. A Two-Step Bayesian Approach for Propensity Score Analysis: Simulations and Case Study

    Science.gov (United States)

    Kaplan, David; Chen, Jianshen

    2012-01-01

    A two-step Bayesian propensity score approach is introduced that incorporates prior information in the propensity score equation and outcome equation without the problems associated with simultaneous Bayesian propensity score approaches. The corresponding variance estimators are also provided. The two-step Bayesian propensity score is provided for…

  7. Bridging the Gaps between Learning and Teaching through Recognition of Students' Learning Approaches: A Case Study

    Science.gov (United States)

    Malie, Senian; Akir, Oriah

    2012-01-01

    Learning approaches, learning methods and learning environments have different effects on students? academic performance. However, they are not the sole factors that impact students? academic achievement. The aims of this research are three-fold: to determine the learning approaches preferred by most students and the impact of the learning…

  8. Innovation in project-based companies - A case study in different approaches to organisational change

    DEFF Research Database (Denmark)

    Grex, Sara

    2004-01-01

    This paper asks how project-based organizations can be developed in order to establish and sustain innovation. The question is being explored by examining and comparing two approaches to organizational change. One approach emphasizes planning, regulation and control and creation of changes through...

  9. Bias due to differential participation in case-control studies and review of available approaches for adjustment.

    Science.gov (United States)

    Aigner, Annette; Grittner, Ulrike; Becher, Heiko

    2018-01-01

    Low response rates in epidemiologic research potentially lead to the recruitment of a non-representative sample of controls in case-control studies. Problems in the unbiased estimation of odds ratios arise when characteristics causing the probability of participation are associated with exposure and outcome. This is a specific setting of selection bias and a realistic hazard in many case-control studies. This paper formally describes the problem and shows its potential extent, reviews existing approaches for bias adjustment applicable under certain conditions, compares and applies them. We focus on two scenarios: a characteristic C causing differential participation of controls is linked to the outcome through its association with risk factor E (scenario I), and C is additionally a genuine risk factor itself (scenario II). We further assume external data sources are available which provide an unbiased estimate of C in the underlying population. Given these scenarios, we (i) review available approaches and their performance in the setting of bias due to differential participation; (ii) describe two existing approaches to correct for the bias in both scenarios in more detail; (iii) present the magnitude of the resulting bias by simulation if the selection of a non-representative sample is ignored; and (iv) demonstrate the approaches' application via data from a case-control study on stroke. The bias of the effect measure for variable E in scenario I and C in scenario II can be large and should therefore be adjusted for in any analysis. It is positively associated with the difference in response rates between groups of the characteristic causing differential participation, and inversely associated with the total response rate in the controls. Adjustment in a standard logistic regression framework is possible in both scenarios if the population distribution of the characteristic causing differential participation is known or can be approximated well.

  10. Casing study

    Energy Technology Data Exchange (ETDEWEB)

    Roche, P.

    2000-12-01

    An unorthodox method of casing drilling used by Tesco Corporation at a gas well in Wyoming to drill deeper using casings as drillpipe is discussed. The process involves either rotating the casing as drill string or using a downhole mud motor to rotate the bit. In this instance, the surface hole and the production hole were casing-drilled to a record 8,312 feet by rotating the casing. The 8 1/2-inch surface hole was drilled with 7-inch casing to 1,200 feet using a Tesco underreamer and a polycrystalline pilot bit; drilling and cementing was completed in 12 1/2 hours. The 6 1/4-inch production hole was drilled with 4 1/2-inch casing and the bottomhole assembly was retrieved after 191 hours rotating. This case was the first in which the entire well was casing-drilled from surface to TD. Penetration rate compared favorably with conventional methods: 12 1/2 hours for casing-drilling to 18.9 hours for conventional drilling, despite the fact that the casing-drilling technology is still in its infancy. It is suggested that casing-drilling has the potential to eliminate the need for the drillpipe entirely. If these expectations were to be realised, casing-drilling could be one of the most radical drilling changes in the history of the oil and gas industry. 1 photo.

  11. An Approach to Using Toxicogenomic Data in U.S. EPA Human Health Risk Assessments: A Dibutyl Phthalate Case Study (Final Report, 2010)

    Science.gov (United States)

    EPA announced the availability of the final report, An Approach to Using Toxicogenomic Data in U.S. EPA Human Health Risk Assessments: A Dibutyl Phthalate Case Study. This report outlines an approach to evaluate genomic data for use in risk assessment and a case study to ...

  12. An Approach to Using Toxicogenomic Data in U.S. EPA Human Health Risk Assessments: A Dibutyl Phthalate (Dbp) Case Study (External Review Draft)

    Science.gov (United States)

    This draft report is a description of an approach to evaluate genomic data for use in risk assessment and a case study to illustrate the approach. The dibutyl phthalate (DBP) case study example focuses on male reproductive developmental effects and the qualitative application of...

  13. A residential location approach to traffic safety: two case studies from Germany.

    Science.gov (United States)

    Scheiner, Joachim; Holz-Rau, Christian

    2011-01-01

    This paper aims to spatially differentiate the road accident risk associated with living at a certain place of residence. Official accident data usually record the place the accident occurred, but not the casualties' places of residence. Among those involved in an accident at a certain place there may obviously be some non-residents, such as in-commuters and transients. Hence spatial analysis based on place of accident may not be suitable for drawing conclusions about specific risk levels for people living in certain places. People's risk of encountering an accident in areas other than that where they live may vary with their mobility. We report on two case studies for the German states of North Rhine-Westphalia and Lower Saxony, which are based on casualties' places of residence. We draw on two data sets both of which have specific advantages and disadvantages. From the data we calculate population-based risk figures on the district level and, for Lower Saxony, on the municipality level. For North Rhine-Westphalia these are categorised by age group and transport mode. We also investigate to what extent accident related analyses can be used to estimate residential related risks. The results show that the risk of being killed or seriously injured in a road accident is considerably lower for the population of agglomeration cores than for the suburban and rural population. Macro-economically this means that suburban and rural areas have markedly higher accident costs than cities. Copyright © 2010 Elsevier Ltd. All rights reserved.

  14. A Simplified Approach to Risk Assessment Based on System Dynamics: An Industrial Case Study.

    Science.gov (United States)

    Garbolino, Emmanuel; Chery, Jean-Pierre; Guarnieri, Franck

    2016-01-01

    Seveso plants are complex sociotechnical systems, which makes it appropriate to support any risk assessment with a model of the system. However, more often than not, this step is only partially addressed, simplified, or avoided in safety reports. At the same time, investigations have shown that the complexity of industrial systems is frequently a factor in accidents, due to interactions between their technical, human, and organizational dimensions. In order to handle both this complexity and changes in the system over time, this article proposes an original and simplified qualitative risk evaluation method based on the system dynamics theory developed by Forrester in the early 1960s. The methodology supports the development of a dynamic risk assessment framework dedicated to industrial activities. It consists of 10 complementary steps grouped into two main activities: system dynamics modeling of the sociotechnical system and risk analysis. This system dynamics risk analysis is applied to a case study of a chemical plant and provides a way to assess the technological and organizational components of safety. © 2016 Society for Risk Analysis.

  15. Conservative Approach in Patients with Pemphigus Gingival Vulgaris: A Pilot Study of Five Cases

    Directory of Open Access Journals (Sweden)

    Alessio Gambino

    2014-01-01

    Full Text Available Objectives. The aim of this pilot study was to describe the clinical efficacy of a conservative oral hygiene protocol in patients affected by gingival pemphigus vulgaris (PV applied in a case series. Methods. Subjects suffering from PV with gingival localisation and slightly responsive to conventional treatment with systemic corticosteroids and immunosuppressive drugs were selected among individuals treated in the Unit of Oral Medicine Section of the University of Turin. Five subjects received nonsurgical periodontal therapy, over a 7-day period, including oral hygiene instructions; patients were instructed about domiciliary oral hygiene maintenance and instructions were reinforced at each visit and personalised if necessary. Clinical outcome variables were recorded at baseline (before starting and 16 weeks after intervention, including full mouth plaque score (FMPS, bleeding scores (FMBS, probing pocket depth (PPD, oral pemphigus clinical score (OPCS, and patient related outcomes (visual analogue score of pain. Results. Five patients were treated and, after finishing the proposed therapy protocol, a statistical significant reduction was observed for FMBS (P=0.043 and OPCS (P=0.038. Conclusions. Professional oral hygiene procedures with nonsurgical therapy are related to an improvement of gingival status and a decrease of gingival bleeding in patients affected by PV with specific gingival localization.

  16. Conservative Approach in Patients with Pemphigus Gingival Vulgaris: A Pilot Study of Five Cases

    Science.gov (United States)

    Gambino, Alessio; Carbone, Mario; Arduino, Paolo G.; Carbone, Lucio; Broccoletti, Roberto

    2014-01-01

    Objectives. The aim of this pilot study was to describe the clinical efficacy of a conservative oral hygiene protocol in patients affected by gingival pemphigus vulgaris (PV) applied in a case series. Methods. Subjects suffering from PV with gingival localisation and slightly responsive to conventional treatment with systemic corticosteroids and immunosuppressive drugs were selected among individuals treated in the Unit of Oral Medicine Section of the University of Turin. Five subjects received nonsurgical periodontal therapy, over a 7-day period, including oral hygiene instructions; patients were instructed about domiciliary oral hygiene maintenance and instructions were reinforced at each visit and personalised if necessary. Clinical outcome variables were recorded at baseline (before starting) and 16 weeks after intervention, including full mouth plaque score (FMPS), bleeding scores (FMBS), probing pocket depth (PPD), oral pemphigus clinical score (OPCS), and patient related outcomes (visual analogue score of pain). Results. Five patients were treated and, after finishing the proposed therapy protocol, a statistical significant reduction was observed for FMBS (P = 0.043) and OPCS (P = 0.038). Conclusions. Professional oral hygiene procedures with nonsurgical therapy are related to an improvement of gingival status and a decrease of gingival bleeding in patients affected by PV with specific gingival localization. PMID:25505912

  17. PV-wind hybrid system performance. A new approach and a case study

    Energy Technology Data Exchange (ETDEWEB)

    Arribas, Luis; Cano, Luis; Cruz, Ignacio [Departamento de Energias Renovables, CIEMAT, Avda. Complutense 22, 28040 Madrid (Spain); Mata, Montserrat; Llobet, Ermen [Ecotecnia, Roc Boronat 78, 08005 Barcelona (Spain)

    2010-01-15

    Until now, there is no internationally accepted guideline for the measurement, data exchange and analysis of PV-Wind Hybrid Systems. As there is a need for such a tool, so as to overcome the barrier that the lack of confidence due to the absence of reliability means for the development of the market of Hybrid Systems, an effort has been made to suggest one tool for PV-Wind Hybrid Systems. The suggested guidelines presented in this work are based on the existing guidelines for PV Systems, as a PV-Wind Hybrid system can be roughly thought of as a PV System to which wind generation has been added. So, the guidelines for PV Systems are valid for the PV-Wind System, and only the part referred to wind generation should be included. This has been the process followed in this work. The proposed method is applied to a case study, the CICLOPS Project, a 5 kW PV, 7.5 kW Wind Hybrid system installed at the Isolated Wind Systems Test Site that CIEMAT owns in CEDER (Soria, Spain). This system has been fully monitored through a year and the results of the monitoring activity, characterizing the long-term performance of the system are shown in this work. (author)

  18. Quality by design case study: an integrated multivariate approach to drug product and process development.

    Science.gov (United States)

    Huang, Jun; Kaul, Goldi; Cai, Chunsheng; Chatlapalli, Ramarao; Hernandez-Abad, Pedro; Ghosh, Krishnendu; Nagi, Arwinder

    2009-12-01

    To facilitate an in-depth process understanding, and offer opportunities for developing control strategies to ensure product quality, a combination of experimental design, optimization and multivariate techniques was integrated into the process development of a drug product. A process DOE was used to evaluate effects of the design factors on manufacturability and final product CQAs, and establish design space to ensure desired CQAs. Two types of analyses were performed to extract maximal information, DOE effect & response surface analysis and multivariate analysis (PCA and PLS). The DOE effect analysis was used to evaluate the interactions and effects of three design factors (water amount, wet massing time and lubrication time), on response variables (blend flow, compressibility and tablet dissolution). The design space was established by the combined use of DOE, optimization and multivariate analysis to ensure desired CQAs. Multivariate analysis of all variables from the DOE batches was conducted to study relationships between the variables and to evaluate the impact of material attributes/process parameters on manufacturability and final product CQAs. The integrated multivariate approach exemplifies application of QbD principles and tools to drug product and process development.

  19. The cost of making wine: A Tuscan case study based on a full cost approach

    Directory of Open Access Journals (Sweden)

    Enrico Marone

    2017-12-01

    Full Text Available This article׳s aim is to identify and quantify the connection between a winery business typology and its production cost per bottle to create benchmarks for managerial and organisational choices. Accounting data from wineries in representative areas of the Tuscan wine sector were collected with direct, face-to-face interviews. The data were processed using a cost accounting model elaborated by UniCeSV (Centre for the Strategic Development of the Wine Sector, University of Florence to classify costs according to production phases and production factors. The study was completed using a hierarchical cluster analysis (HCA approach to investigate the relation between cost structures and business typologies. The implementation of the cost accounting model and the HCA showed a strong relationship between how wineries are organised and how costs are structured. Moreover, the weight of geographical localisation (i.e., belonging to a specific denomination of origin has proved to be a key determinant in the shape of the cost structures of wineries. Keywords: Wine production, Full cost analysis, Clustering

  20. Biochemical approaches to C4 photosynthesis evolution studies: the case of malic enzymes decarboxylases.

    Science.gov (United States)

    Saigo, Mariana; Tronconi, Marcos A; Gerrard Wheeler, Mariel C; Alvarez, Clarisa E; Drincovich, María F; Andreo, Carlos S

    2013-11-01

    C4 photosynthesis enables the capture of atmospheric CO2 and its concentration at the site of RuBisCO, thus counteracting the negative effects of low atmospheric levels of CO2 and high atmospheric levels of O2 (21 %) on photosynthesis. The evolution of this complex syndrome was a multistep process. It did not occur by simply recruiting pre-exiting components of the pathway from C3 ancestors which were already optimized for C4 function. Rather it involved modifications in the kinetics and regulatory properties of pre-existing isoforms of non-photosynthetic enzymes in C3 plants. Thus, biochemical studies aimed at elucidating the functional adaptations of these enzymes are central to the development of an integrative view of the C4 mechanism. In the present review, the most important biochemical approaches that we currently use to understand the evolution of the C4 isoforms of malic enzyme are summarized. It is expected that this information will help in the rational design of the best decarboxylation processes to provide CO2 for RuBisCO in engineering C3 species to perform C4 photosynthesis.

  1. A Two-Stage Penalized Logistic Regression Approach to Case-Control Genome-Wide Association Studies

    Directory of Open Access Journals (Sweden)

    Jingyuan Zhao

    2012-01-01

    Full Text Available We propose a two-stage penalized logistic regression approach to case-control genome-wide association studies. This approach consists of a screening stage and a selection stage. In the screening stage, main-effect and interaction-effect features are screened by using L1-penalized logistic like-lihoods. In the selection stage, the retained features are ranked by the logistic likelihood with the smoothly clipped absolute deviation (SCAD penalty (Fan and Li, 2001 and Jeffrey’s Prior penalty (Firth, 1993, a sequence of nested candidate models are formed, and the models are assessed by a family of extended Bayesian information criteria (J. Chen and Z. Chen, 2008. The proposed approach is applied to the analysis of the prostate cancer data of the Cancer Genetic Markers of Susceptibility (CGEMS project in the National Cancer Institute, USA. Simulation studies are carried out to compare the approach with the pair-wise multiple testing approach (Marchini et al. 2005 and the LASSO-patternsearch algorithm (Shi et al. 2007.

  2. A multi-range approach for Cultural Heritage survey: a case study in Mantua Unesco site

    Directory of Open Access Journals (Sweden)

    S. Chiarini

    2014-06-01

    Full Text Available In this paper, a Cultural Heritage survey, performed by employing and integrating different type of acquisition technologies (imagebased and active sensor based is presented. The aim of the survey is to create a 3D multiscale database, therefore, different restitution scales, from the architectural-urban one to a detail one are taken in consideration. This research is part of a project financed by the Unesco for the study of historical gardens located in Mantua and Sabbioneta, and in particular for the Palazzo Te renaissance gardens in Mantua, which are reported in this paper. First of all, a general survey of the area has been realized by employing the classical aerial photogrammetry in order to provide the actual arboreal and urban furniture conditions of the gardens (1:500 scale. Next, a detailed photogrammetric survey of the Esedra courtyard in Palazzo Te has been performed by using a UAV system. At the end, laser scanning and traditional topography have been used for the terrestrial detailed acquisition of gardens and architectural façades (1:50–1:20 scale. The aim of this research is to create a suitable graphical documentation support for the study of the structure of the gardens, to analyze how they have been modified over the years and as an effective support for eventual future re-design. Moreover, the research has involved a certain number of botanic and archeological investigations, which have been duly acquired and modeled with image based systems. Starting from the acquired datasets with their acquisition scales, a series of comparative analysis have been performed, especially for those areas in which all the systems have been employed. The comparisons have been extracted by analyzing point cloud models obtained by using a topographical network. As a result, the multi-range approach efficiency, obtained by employing the actual available technologies have been illustrated in the present work.

  3. A multi-range approach for Cultural Heritage survey: a case study in Mantua Unesco site

    Science.gov (United States)

    Chiarini, S.; Cremonesi, S.; Fregonese, L.; Fassi, F.; Taffurelli, L.

    2014-06-01

    In this paper, a Cultural Heritage survey, performed by employing and integrating different type of acquisition technologies (imagebased and active sensor based) is presented. The aim of the survey is to create a 3D multiscale database, therefore, different restitution scales, from the architectural-urban one to a detail one are taken in consideration. This research is part of a project financed by the Unesco for the study of historical gardens located in Mantua and Sabbioneta, and in particular for the Palazzo Te renaissance gardens in Mantua, which are reported in this paper. First of all, a general survey of the area has been realized by employing the classical aerial photogrammetry in order to provide the actual arboreal and urban furniture conditions of the gardens (1:500 scale). Next, a detailed photogrammetric survey of the Esedra courtyard in Palazzo Te has been performed by using a UAV system. At the end, laser scanning and traditional topography have been used for the terrestrial detailed acquisition of gardens and architectural façades (1:50-1:20 scale). The aim of this research is to create a suitable graphical documentation support for the study of the structure of the gardens, to analyze how they have been modified over the years and as an effective support for eventual future re-design. Moreover, the research has involved a certain number of botanic and archeological investigations, which have been duly acquired and modeled with image based systems. Starting from the acquired datasets with their acquisition scales, a series of comparative analysis have been performed, especially for those areas in which all the systems have been employed. The comparisons have been extracted by analyzing point cloud models obtained by using a topographical network. As a result, the multi-range approach efficiency, obtained by employing the actual available technologies have been illustrated in the present work.

  4. Bayesian approach to the assessment of the population-specific risk of inhibitors in hemophilia A patients: a case study

    Directory of Open Access Journals (Sweden)

    Cheng J

    2016-10-01

    significant inhibitor (10/100, 5/100 [high rates], and 1/86 [the Food and Drug Administration mandated cutoff rate in PTPs] were calculated. The effect of discounting prior information or scaling up the study data was evaluated.Results: Results based on noninformative priors were similar to the classical approach. Using priors from PTPs lowered the point estimate and narrowed the 95% credible intervals (Case 1: from 1.3 [0.5, 2.7] to 0.8 [0.5, 1.1]; Case 2: from 1.9 [0.6, 6.0] to 0.8 [0.5, 1.1]; Case 3: 2.3 [0.5, 6.8] to 0.7 [0.5, 1.1]. All probabilities of satisfying a threshold of 1/86 were above 0.65. Increasing the number of patients by two and ten times substantially narrowed the credible intervals for the single cohort study (1.4 [0.7, 2.3] and 1.4 [1.1, 1.8], respectively. Increasing the number of studies by two and ten times for the multiple study scenarios (Case 2: 1.9 [0.6, 4.0] and 1.9 [1.5, 2.6]; Case 3: 2.4 [0.9, 5.0] and 2.6 [1.9, 3.5], respectively had a similar effect.Conclusion: Bayesian approach as a robust, transparent, and reproducible analytic method can be efficiently used to estimate the inhibitor rate of hemophilia A in complex clinical settings. Keywords: inhibitor rate, meta-analysis, multicentric study, Bayesian, hemophilia A

  5. A combined disease management and process modeling approach for assessing and improving care processes: a fall management case-study.

    Science.gov (United States)

    Askari, Marjan; Westerhof, Richard; Eslami, Saied; Medlock, Stephanie; de Rooij, Sophia E; Abu-Hanna, Ameen

    2013-10-01

    To propose a combined disease management and process modeling approach for evaluating and improving care processes, and demonstrate its usability and usefulness in a real-world fall management case study. We identified essential disease management related concepts and mapped them into explicit questions meant to expose areas for improvement in the respective care processes. We applied the disease management oriented questions to a process model of a comprehensive real world fall prevention and treatment program covering primary and secondary care. We relied on interviews and observations to complete the process models, which were captured in UML activity diagrams. A preliminary evaluation of the usability of our approach by gauging the experience of the modeler and an external validator was conducted, and the usefulness of the method was evaluated by gathering feedback from stakeholders at an invitational conference of 75 attendees. The process model of the fall management program was organized around the clinical tasks of case finding, risk profiling, decision making, coordination and interventions. Applying the disease management questions to the process models exposed weaknesses in the process including: absence of program ownership, under-detection of falls in primary care, and lack of efficient communication among stakeholders due to missing awareness about other stakeholders' workflow. The modelers experienced the approach as usable and the attendees of the invitational conference found the analysis results to be valid. The proposed disease management view of process modeling was usable and useful for systematically identifying areas of improvement in a fall management program. Although specifically applied to fall management, we believe our case study is characteristic of various disease management settings, suggesting the wider applicability of the approach. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  6. A Marketing Approach to Commodity Futures Exchanges : A Case Study of the Dutch Hog Industry

    NARCIS (Netherlands)

    Meulenberg, M.T.G.; Pennings, J.M.E.

    2002-01-01

    This paper proposes a marketing strategic approach to commodity futures exchanges to optimise the (hedging) services offered. First, the environment of commodity futures exchanges is examined. Second, the threats and opportunities of commodity futures exchanges are analysed. Our analysis

  7. An Integrative Approach in Treating Complete Food Refusal in Children: a Case Study

    OpenAIRE

    Khamsiah Ismail; Siti Rafiah Abd Hamid

    2015-01-01

    Eating disorders among children may be attributed to the range of complications associated with feeding problems; from mild (e. g. , missed meals) to total food rejection. Many early feeding problems can be diagnosed and corrected either by medical interventions, therapies or behavioural modification. Parents might use reward system in persuading them to eat and in extreme cases, pressure, force and punishment are also applied. There are also cases of children who do not eat at all and simply...

  8. Exploring fire dynamics with BFAST approach: case studies in Sardinia, Italy

    Science.gov (United States)

    Quarfeld, Jamie; di Mauro, Biagio; Colombo, Roberto; Verbesselt, Jan

    2016-04-01

    The synergistic effect of wildfire and extreme post-fire climatic events, (e.g. droughts or torrential rainfall), may result in long windows of disturbance - challenging the overall resilience of Mediterranean ecosystems and communities. The notion that increased fire frequency and severity may reduce ecosystem resilience has received much attention in Mediterranean regions in recent decades. Careful evaluation of vegetation recovery and landscape regeneration after a fire event provides vital information useful in land management. In this study, an extension of Breaks For Additive Seasonal and Trend (BFAST) is proposed as an ideal approach to monitor change and assess fire dynamics at the landscape level based on analysis of the MODerate-resolution Imaging Spectroradiometer (MODIS, TERRA) time series. To this end, satellite images of three vegetation indices (VIs), the Normalized Burn Ratio (NBR), the Enhanced Vegetation Index (EVI) and the Normalized Difference Vegetation Index (NDVI) were used. The analysis was conducted on areas affected by wildfires in the Sardinia region (Italy) between 2007 and 2010. Some land surface (LS) descriptors (i.e. mean and maximum VI) and fire characteristics (e.g. pre-fire trend & VI, change magnitude, current VI) were extracted to characterize the post-fire evolution of each site within a fifteen-year period (2000-2015). Resilience was estimated using a classic linear function, whereby recovery rates were compared to regional climate data (e.g. water balance) and local landscape components (e.g.topography, land use and land cover). The methodology was applied according to land cover type (e.g. mixed forest, maquis, shrubland, pasture) within each fire site and highlighted the challenge of isolating effects and quantifying the role of fire regime characteristics on resilience in a dynamic way when considering large, heterogeneous areas. Preliminary findings can be outlined as follows: I. NBR showed it was most effective at

  9. Evaluation of municipal solid waste management performance by material flow analysis: Theoretical approach and case study.

    Science.gov (United States)

    Zaccariello, Lucio; Cremiato, Raffaele; Mastellone, Maria Laura

    2015-10-01

    The main role of a waste management plan is to define which is the combination of waste management strategies and method needed to collect and manage the waste in such a way to ensure a given set of targets is reached. Objectives have to be sustainable and realistic, consistent with the environmental policies and regulations and monitored to verify the progressive achievement of the given targets. To get the aim, the setting up and quantification of indicators can allow the measurement of efficiency of a waste management system. The quantification of efficiency indicators requires the developing of a material flow analysis over the system boundary, from waste collection to secondary materials selling, processing and disposal. The material flow analysis has been carried out with reference to a case study for which a reliable, time- and site-specific database was available. The material flow analysis allowed the evaluation of the amount of materials sent to recycling, to landfilling and to waste-to-energy, by highlighting that the sorting of residual waste can further increase the secondary materials amount. The utilisation of energy recovery to treat the low-grade waste allows the maximisation of waste diversion from landfill with a low production of hazardous ash. A preliminary economic balance has been carried out to define the gate fee of the waste management system that was in the range of 84-145 € t(-1) without including the separate collection cost. The cost of door-by-door separate collection, designed to ensure the collection of five separate streams, resulted in 250 € t(-1) ±30%. © The Author(s) 2015.

  10. Robotic approach for cervical cancer: comparison with laparotomy: a case control study.

    Science.gov (United States)

    Maggioni, Angelo; Minig, Lucas; Zanagnolo, Vanna; Peiretti, Michele; Sanguineti, Fabio; Bocciolone, Luca; Colombo, Nicoletta; Landoni, Fabio; Roviglione, Giovanni; Vélez, Jorge Ivan

    2009-10-01

    To compare the surgical outcome of robotic radical hysterectomy (RRH) versus abdominal radical hysterectomy (ARH) for the treatment of early stage cervical cancer. A prospective collection of data of all RRH for stages IA2-IIA cervical cancer was done. The procedures were performed at the European Institute of Oncology, Milan, Italy, between November 1, 2006 and February 1, 2009. A total of 40 RRH were analyzed, and compared with 40 historic ARH cases. The groups did not differ significantly in body mass index, stage, histology, or intraoperative complications, but in age (p=0.035). The mean (SD) operative time was significantly shorter for ARH than RRH, 199.6 (65.6) minutes and 272.27 (42.3) minutes respectively (p=0.0001). The mean (SD) estimated blood loss (EBL) was 78 ml (94.8) in RRH group and 221.8 ml (132.4) in ARH. This difference was statistically significant in favor of RRH group (p<0.0001). Statistically significantly higher number of pelvic lymph nodes was removed by ARH than by RRH, mean (SD) 26.2 (11.7) versus 20.4 (6.9), p<0.05. Mean length of stay was significantly shorter for the RRH group (3.7 versus 5.0 days, p<0.01). There was no significant difference in terms of postoperative complications between groups. This study shows that RRH is safe and feasible. However, a comparison of oncologic outcomes and cost-benefit analysis is still needed and it has to be carefully evaluated in the future.

  11. Approaches to developing the capacity of health policy analysis institutes: a comparative case study

    Directory of Open Access Journals (Sweden)

    Bennett Sara

    2012-03-01

    Full Text Available Abstract Objectives To review and assess (i the factors that facilitate the development of sustainable health policy analysis institutes in low and middle income countries and (ii the nature of external support for capacity development provided to such institutes. Methods Comparative case studies of six health policy analysis institutes (3 from Asia and 3 from Africa were conducted. In each region an NGO institute, an institute linked to government and a university based institute were included. Data collection comprised document review, semi-structured interviews with stakeholders and discussion of preliminary findings with institute staff. Findings The findings are organized around four key themes: (i Financial resources: three of the institutes had received substantial external grants at start-up, however two of these institutes subsequently collapsed. At all but one institute, reliance upon short term, donor funding, created high administrative costs and unpredictability. (ii Human resources: the retention of skilled human resources was perceived to be key to institute success but was problematic at all but one institute. In particular staff often moved to better paid positions elsewhere once having acquired necessary skills and experience, leaving remaining senior staff with heavy workloads. (iii Governance and management: board structures and roles varied according to the nature of institute ownership. Boards made important contributions to organizational capacity through promoting continuity, independence and fund raising. Routine management systems were typically perceived to be strong. (iv Networks: linkages to policy makers helped promote policy influences. External networks with other research organizations, particularly where these were longer term institutional collaborations helped promote capacity. Conclusions The development of strong in-country analytical and research capacity to guide health policy development is critical, yet

  12. Application Of Decision Tree Approach To Student Selection Model- A Case Study

    Science.gov (United States)

    Harwati; Sudiya, Amby

    2016-01-01

    The main purpose of the institution is to provide quality education to the students and to improve the quality of managerial decisions. One of the ways to improve the quality of students is to arrange the selection of new students with a more selective. This research takes the case in the selection of new students at Islamic University of Indonesia, Yogyakarta, Indonesia. One of the university's selection is through filtering administrative selection based on the records of prospective students at the high school without paper testing. Currently, that kind of selection does not yet has a standard model and criteria. Selection is only done by comparing candidate application file, so the subjectivity of assessment is very possible to happen because of the lack standard criteria that can differentiate the quality of students from one another. By applying data mining techniques classification, can be built a model selection for new students which includes criteria to certain standards such as the area of origin, the status of the school, the average value and so on. These criteria are determined by using rules that appear based on the classification of the academic achievement (GPA) of the students in previous years who entered the university through the same way. The decision tree method with C4.5 algorithm is used here. The results show that students are given priority for admission is that meet the following criteria: came from the island of Java, public school, majoring in science, an average value above 75, and have at least one achievement during their study in high school.

  13. Sustainability evaluation of pasteurized milk production with a life cycle assessment approach: An Iranian case study.

    Science.gov (United States)

    Rafiee, Shahin; Khoshnevisan, Benyamin; Mohammadi, Issa; Aghbashlo, Mortaza; Mousazadeh, Hossein; Clark, Sean

    2016-08-15

    Agro-food systems play a significant role in the economies of all nations due to energy use and the resulting environmental consequences. The sustainability of these systems is determined by a multitude of interacting economic, social and environmental factors. Dairy production presents a relevant example of the sustainability trade-offs that occur within such systems. On the one hand, dairy production constitutes an important part of the human diet, but it is also responsible for significant emissions of potent greenhouse gases and other pollutants. In this study, the environmental aspects of pasteurized milk production in Iran were investigated using a life-cycle approach. Three sub-systems, namely feed production, dairy farm and dairy factory, were taken into account to determine how and where Iranian pasteurized milk production might be made more environmentally friendly and energy efficient. The results clearly demonstrate that the feed production stage was the hot spot in pasteurized milk production in terms of energy consumption, environmental burdens and economic costs. The largest share of the total production costs belonged to animal feeds (43%), which were part of the feed production stage. The largest consumers of energy in the production of raw milk were alfalfa (30.3%), concentrate (24%), straw (17.8%) and maize (10.9%) for cows, followed by diesel fuel (6.6%) and electricity (5.6%). The global warming potential for the production of 1000kg of raw milk at the dairy-farm gate was estimated at 457kg CO2,eq. Thus, more than 69% of the total impact at the milk-processing gate resulted from the previous two sub-systems (feed production and dairy farm), with the feed-production stage accounting for the largest fractions of the environmental burdens. Copyright © 2016 Elsevier B.V. All rights reserved.

  14. Non-aqueous metathesis as a general approach to prepare nanodispersed materials: Case study of scheelites

    Energy Technology Data Exchange (ETDEWEB)

    Afanasiev, Pavel, E-mail: pavel.afanasiev@ircelyon.univ-lyon1.fr

    2015-09-15

    A general approach to the preparation of inorganic nanoparticles is proposed, using metathesis of precursor salts in non-aqueous liquids. Nanoparticles of scheelites AMO{sub 4} (A=Ba, Sr, Ca; M=Mo, W), were obtained with a quantitative yield. Precipitations in formamide, N-methylformamide, propylene carbonate, DMSO and polyols often provide narrow particle size distributions. Advantageous morphology was explained by strong ionic association in non-aqueous solvents, leading to slow nucleation and negligible Ostwald ripening. Mean particle size below 10 nm and high specific surface areas were obtained for several Ca(Sr)Mo(W)O{sub 4} materials, making them promising for applications as adsorbents or catalysts. Zeta-potential of scheelites in aqueous suspensions showed negative values in a wide range of pH. Systematic study of optical properties demonstrated variation of optical gap in the sequences W>Mo and Ba>Sr>Ca. The observed trends were reproduced by DFT calculations. No quantum confinement effect was observed for small particles, though the surface states induce low-energy features in the optical spectra. - Graphical abstract: Scheelites AMO{sub 4} (A=Ca, Sr, Ba; M=Mo, W) were prepared in various non-aqueous liquids with high specific surface areas and narrow size distributions. The optical gap of scheelites changes in the series Ca

  15. Energy Portfolio Assessment Tool (EPAT): Sustainable Energy Planning Using the WEF Nexus Approach - Texas Case Study

    Science.gov (United States)

    Mroue, A. M.

    2017-12-01

    The future energy portfolio at the national and subnational levels should consider its impact on water resources and environment. Although energy resources are the main contributors to the national economic growth, these resources must not exploit other primary natural resources. A study of the connections between energy and natural systems, such as water, environment and land is required prior to proceeding to energy development. Policy makers are in need of a tool quantifying the interlinkages across energy, water and the environment, while demonstrating the consequent trade-offs across the nexus systems. The Energy Portfolio Assessment Tool (EPAT) is a tool that enables the policy maker to create different energy portfolio scenarios with various energy and electricity sources, and evaluate the scenario's sustainability environmentally and economically. The Water-Energy-Food nexus systematic approach is the foundation of the EPAT framework. The research evaluates the impact of the current and projected Texas energy portfolios on water and the environment, taking into consideration energy production, electricity generation and policy change. The three scenarios to be assessed include EIA projections for energy production, and EIA projections for electricity generation with and without the Clean Power Plan (CPP). Each scenario is accompanied by tradeoffs across water, land, emissions, energy revenue and electricity cost. The CPP succeeds in mitigating the emissions of the electricity portfolio, but leads to an increase in water consumption and land use. The cost of electricity generation is almost identical with and without environmental conservation. Revenue from energy production increased, but results are majorly influenced by commodity price. Therefore, conservation policies should move from the silo to the nexus mentality to avoid unintended consequences as improving one part of the nexus could end up worsening the other parts.

  16. Bayesian approach to the assessment of the population-specific risk of inhibitors in hemophilia A patients: a case study.

    Science.gov (United States)

    Cheng, Ji; Iorio, Alfonso; Marcucci, Maura; Romanov, Vadim; Pullenayegum, Eleanor M; Marshall, John K; Thabane, Lehana

    2016-01-01

    Developing inhibitors is a rare event during the treatment of hemophilia A. The multifacets and uncertainty surrounding the development of inhibitors further complicate the process of estimating inhibitor rate from the limited data. Bayesian statistical modeling provides a useful tool in generating, enhancing, and exploring the evidence through incorporating all the available information. We built our Bayesian analysis using three study cases to estimate the inhibitor rates of patients with hemophilia A in three different scenarios: Case 1, a single cohort of previously treated patients (PTPs) or previously untreated patients; Case 2, a meta-analysis of PTP cohorts; and Case 3, a previously unexplored patient population - patients with baseline low-titer inhibitor or history of inhibitor development. The data used in this study were extracted from three published ADVATE (antihemophilic factor [recombinant] is a product of Baxter for treating hemophilia A) post-authorization surveillance studies. Noninformative and informative priors were applied to Bayesian standard (Case 1) or random-effects (Case 2 and Case 3) logistic models. Bayesian probabilities of satisfying three meaningful thresholds of the risk of developing a clinical significant inhibitor (10/100, 5/100 [high rates], and 1/86 [the Food and Drug Administration mandated cutoff rate in PTPs]) were calculated. The effect of discounting prior information or scaling up the study data was evaluated. Results based on noninformative priors were similar to the classical approach. Using priors from PTPs lowered the point estimate and narrowed the 95% credible intervals (Case 1: from 1.3 [0.5, 2.7] to 0.8 [0.5, 1.1]; Case 2: from 1.9 [0.6, 6.0] to 0.8 [0.5, 1.1]; Case 3: 2.3 [0.5, 6.8] to 0.7 [0.5, 1.1]). All probabilities of satisfying a threshold of 1/86 were above 0.65. Increasing the number of patients by two and ten times substantially narrowed the credible intervals for the single cohort study (1.4 [0.7, 2

  17. Bayesian approaches for Integrated Water Resources Management. A Mediterranean case study.

    Science.gov (United States)

    Gulliver, Zacarías; Herrero, Javier; José Polo, María

    2013-04-01

    This study presents the first steps of a short-term/mid-term analysis of the water resources in the Guadalfeo Basin, Spain. Within the basin the recent construction of the Rules dam has required the development of specific management tools and structures for this water system. The climate variability and the high water demand requirements for agriculture irrigation and tourism in this region may cause different controversies in the water management planning process. During the first stages of the study a rigorous analysis of the Water Framework Directive results was done in order to implement the legal requirements and the solutions for the gaps identified by the water authorities. In addition, the stakeholders and water experts identified the variables and geophysical processes for our specific water system case. These particularities need to be taken into account and are required to be reflected in the final computational tool. For decision making process purposes in a mid-term scale, a bayesian network has been used to quantify uncertainty which also provides a structure representation of probabilities, actions-decisions and utilities. On one hand by applying these techniques it is possible the inclusion of decision rules generating influence diagrams that provides clear and coherent semantics for the value of making an observation. On the other hand the utility nodes encode the stakeholders preferences which are measured on a numerical scale, choosing the action that maximizes the expected utility [MEU]. Also this graphical model allows us to identify gaps and project corrective measures, for example, formulating associated scenarios with different event hypotheses. In this sense conditional probability distributions of the seasonal water demand and waste water has been obtained between the established intervals. This fact will give to the regional water managers useful information for future decision making process. The final display is very visual and allows

  18. Pollutant fates in fluvial systems: on need of individual approach to each case study

    Science.gov (United States)

    Matys Grygar, Tomas; Elznicova, Jitka; Novakova, Tereza

    2015-04-01

    deposition in a channel belt and subsequent secondary pollution via physical mobilisation, most pollution storing in the floodplain in a surprisingly heterogeneous manner - in hotspots with a size comparable to fragments of abandoned channels (from a few to few tens of metres). The hotspots are hence best revealed by well-designed field analysis using portable instruments (gamma spectrometry or XRF). The Litavka is specific because most pollution is in its floodplain in the form of anthropogenic alluvium, a very thick vertical accretion body of "artificial" material added to the river system in the amount exceeding its normal transport capacity. That situation favours secondary pollution by chemical mobilisation of pollutants under low river discharges revealed by geochemical analysis. Our case studies show that simple "rules" such as continuous decay of pollutant concentrations downstream from the pollution source, existence of a continuous blanket of polluted overbank fines in floodplain, simple change of the pollution extent with growing distance from the river channel and as a consequence of extreme floods, or simple recipes such as low-density sampling to trace point pollution sources are too simplistic to be applicable in real polluted fluvial systems. Each river system represents a nearly unique combination of individual geomorphic processes, and each pollution has been specific by the mode how it entered the fluvial system. We will not offer "magic tools" in our contribution. In literature we can find all pieces we need for the jigsaw puzzle - pollutants fates in fluvial systems. The question is why so rarely researchers put them together. We would like to encourage them to do so.

  19. Autonomous optical navigation using nanosatellite-class instruments: a Mars approach case study

    Science.gov (United States)

    Enright, John; Jovanovic, Ilija; Kazemi, Laila; Zhang, Harry; Dzamba, Tom

    2018-02-01

    This paper examines the effectiveness of small star trackers for orbital estimation. Autonomous optical navigation has been used for some time to provide local estimates of orbital parameters during close approach to celestial bodies. These techniques have been used extensively on spacecraft dating back to the Voyager missions, but often rely on long exposures and large instrument apertures. Using a hyperbolic Mars approach as a reference mission, we present an EKF-based navigation filter suitable for nanosatellite missions. Observations of Mars and its moons allow the estimator to correct initial errors in both position and velocity. Our results show that nanosatellite-class star trackers can produce good quality navigation solutions with low position (<300 {m}) and velocity (<0.15 {m/s}) errors as the spacecraft approaches periapse.

  20. A numerical approach to the study of the perpetual case of Ameripean options

    Science.gov (United States)

    Kandilarov, J.

    2013-12-01

    A new numerical method for solving the perpetual case of Ameripean options is proposed. The Ameripean delayed exercise model analyzes a new class of option model with American and ParAsian features. The model is mathematically described by ultraparabolic and parabolic PDE's which are valid over different regions. The perpetual case leads to the parabolic-elliptic two-phase Stefan problem with free internal boundary. To deal with the obtained nonlinear problem an iterative numerical method is proposed. Numerical analysis are presented and discussed.

  1. Challenges in the application of quantitative approaches in risk assessment: a case study with di-(2-ethylhexyl)phthalate.

    Science.gov (United States)

    Gentry, P Robinan; Clewell, Harvey J; Clewell, Rebecca; Campbell, Jerry; Van Landingham, Cynthia; Shipp, Annette M

    2011-08-01

    The constantly evolving science of risk assessment is currently faced with many challenges, not only from the interpretation of the volume of data being generated with new innovative technologies, but also in attempting to quantitatively incorporate this information into understanding potential risk of adverse events in human populations. The objective of the case study described was to use the more recent data for di-(2-ethylhexyl)phthalate (DEHP) to investigate the impact of innovative quantitative approaches on the risk assessment of a compound, specifically as it can be used to move towards the new vision of risk assessment involving the integration of the available toxicological data to understand underlying biological processes. What emerged were several outcomes that demonstrated clearly the importance of the integration of the toxicological data, specifically to understand the biological processes being impacted, because standard statistical modeling approaches may not be adequate to describe the dose-response relationships observed. Alternative approaches demonstrate that a definitive mode of action is not needed to justify the shape of the low-dose region or a threshold, when the integration of the available data assist risk assessors in understanding the shape of the dose-response curve for both noncancer and cancer endpoints. Many of the challenges described as part of this case study would likely be encountered with compounds other than DEHP, especially other receptor-mediated compounds or compounds that "perturb" biological pathways, such as endocrine disruptors. This case study also highlights the importance of communication between risk assessors and the research community to focus on the generation of data most relevant for assessing the potential for chemicals to impact biological systems in the human.

  2. Sustainability evaluation of pasteurized milk production with a life cycle assessment approach: An Iranian case study

    Energy Technology Data Exchange (ETDEWEB)

    Rafiee, Shahin, E-mail: shahinrafiee@ut.ac.ir [Department of Agricultural Machinery Engineering, Faculty of Agricultural, Engineering and Technology, University of Tehran, Karaj (Iran, Islamic Republic of); Khoshnevisan, Benyamin, E-mail: b_khoshnevisan@ut.ac.ir [Department of Agricultural Machinery Engineering, Faculty of Agricultural, Engineering and Technology, University of Tehran, Karaj (Iran, Islamic Republic of); Environmental Specialist Research Team (ESRTeam), Tehran (Iran, Islamic Republic of); Mohammadi, Issa; Aghbashlo, Mortaza; Musazadeh, Hossein [Department of Agricultural Machinery Engineering, Faculty of Agricultural, Engineering and Technology, University of Tehran, Karaj (Iran, Islamic Republic of); Clark, Sean [Agriculture and Natural Resources Program, Berea College, Berea, KY (United States)

    2016-08-15

    Agro-food systems play a significant role in the economies of all nations due to energy use and the resulting environmental consequences. The sustainability of these systems is determined by a multitude of interacting economic, social and environmental factors. Dairy production presents a relevant example of the sustainability trade-offs that occur within such systems. On the one hand, dairy production constitutes an important part of the human diet, but it is also responsible for significant emissions of potent greenhouse gases and other pollutants. In this study, the environmental aspects of pasteurized milk production in Iran were investigated using a life-cycle approach. Three sub-systems, namely feed production, dairy farm and dairy factory, were taken into account to determine how and where Iranian pasteurized milk production might be made more environmentally friendly and energy efficient. The results clearly demonstrate that the feed production stage was the hot spot in pasteurized milk production in terms of energy consumption, environmental burdens and economic costs. The largest share of the total production costs belonged to animal feeds (43%), which were part of the feed production stage. The largest consumers of energy in the production of raw milk were alfalfa (30.3%), concentrate (24%), straw (17.8%) and maize (10.9%) for cows, followed by diesel fuel (6.6%) and electricity (5.6%). The global warming potential for the production of 1000 kg of raw milk at the dairy-farm gate was estimated at 457 kg CO{sub 2,eq}. Thus, more than 69% of the total impact at the milk-processing gate resulted from the previous two sub-systems (feed production and dairy farm), with the feed-production stage accounting for the largest fractions of the environmental burdens. - Highlights: • Environmental aspects of milk production in Iran were investigated using LCA. • Feed production, dairy farm and dairy factory were taken into account. • Feed production stage was

  3. Sustainability evaluation of pasteurized milk production with a life cycle assessment approach: An Iranian case study

    International Nuclear Information System (INIS)

    Rafiee, Shahin; Khoshnevisan, Benyamin; Mohammadi, Issa; Aghbashlo, Mortaza; Musazadeh, Hossein; Clark, Sean

    2016-01-01

    Agro-food systems play a significant role in the economies of all nations due to energy use and the resulting environmental consequences. The sustainability of these systems is determined by a multitude of interacting economic, social and environmental factors. Dairy production presents a relevant example of the sustainability trade-offs that occur within such systems. On the one hand, dairy production constitutes an important part of the human diet, but it is also responsible for significant emissions of potent greenhouse gases and other pollutants. In this study, the environmental aspects of pasteurized milk production in Iran were investigated using a life-cycle approach. Three sub-systems, namely feed production, dairy farm and dairy factory, were taken into account to determine how and where Iranian pasteurized milk production might be made more environmentally friendly and energy efficient. The results clearly demonstrate that the feed production stage was the hot spot in pasteurized milk production in terms of energy consumption, environmental burdens and economic costs. The largest share of the total production costs belonged to animal feeds (43%), which were part of the feed production stage. The largest consumers of energy in the production of raw milk were alfalfa (30.3%), concentrate (24%), straw (17.8%) and maize (10.9%) for cows, followed by diesel fuel (6.6%) and electricity (5.6%). The global warming potential for the production of 1000 kg of raw milk at the dairy-farm gate was estimated at 457 kg CO 2,eq . Thus, more than 69% of the total impact at the milk-processing gate resulted from the previous two sub-systems (feed production and dairy farm), with the feed-production stage accounting for the largest fractions of the environmental burdens. - Highlights: • Environmental aspects of milk production in Iran were investigated using LCA. • Feed production, dairy farm and dairy factory were taken into account. • Feed production stage was the

  4. Applying adaptive management in resource use in South African National Parks: A case study approach

    Directory of Open Access Journals (Sweden)

    Kelly Scheepers

    2011-05-01

    Conservation implications: There is no blueprint for the development of sustainable resource use systems and resource use is often addressed according to multiple approaches in national parks. However, the SANParks resource use policy provides a necessary set of guiding principles for resource use management across the national park system that allows for monitoring progress.

  5. Balancing uncertainty of context in ERP project estimation: an approach and a case study

    NARCIS (Netherlands)

    Daneva, Maia

    2010-01-01

    The increasing demand for Enterprise Resource Planning (ERP) solutions as well as the high rates of troubled ERP implementations and outright cancellations calls for developing effort estimation practices to systematically deal with uncertainties in ERP projects. This paper describes an approach -

  6. Helping Them to Help Themselves: Case Study of an Integrated Popular Theatre Approach in Africa

    Science.gov (United States)

    Chinyowa, Kennedy C.

    2007-01-01

    An outstanding problem that has haunted most development workers in Africa has been how to effectively engage rural communities who often have no access to modern technological media like newspapers, radio, television, video and film. The tendency has been for development workers to resort to top-down or blueprint development approaches that…

  7. Cleaner Production and Workplace Health and Safety: A combined approach. A case study from South Africa

    DEFF Research Database (Denmark)

    Hedlund, Frank Huess

    Environmental goals may be pursued narrow-mindedly with no attention paid to the workplace. This book examines combined approaches in cleaner production projects. It explores two main avenues. First, integration into the project specification. The planning tools in use by assistance agencies are ...

  8. An Evaluation System for Training Programs: A Case Study Using a Four-Phase Approach

    Science.gov (United States)

    Lingham, Tony; Richley, Bonnie; Rezania, Davar

    2006-01-01

    Purpose: With the increased importance of training in organizations, creating important and meaningful programs are critical to an organization and its members. The purpose of this paper is to suggest a four-phase systematic approach to designing and evaluating training programs that promotes collaboration between organizational leaders, trainers,…

  9. Linking Gambling and Trauma: A Phenomenological Hermeneutic Case Study Using Almaas' Transformation of Narcissism Approach

    Science.gov (United States)

    Nixon, Gary; Solowoniuk, Jason; Boni, Lauren Julia; Kalischuk, Ruth Grant

    2013-01-01

    The purpose of this article is to examine the phenomenon of pathological gambling and addiction from the perspective of writer and teacher A.H Almaas. By drawing on his Diamond Mind approach we trace the origin of addictive behaviors and pathological gambling to narcissistic wounding, which constitutes the loss of connection with the Essential…

  10. Investigating the Relationship among Extracurricular Activities, Learning Approach and Academic Outcomes: A Case Study

    Science.gov (United States)

    Chan, Yiu-Kong

    2016-01-01

    Learning effectiveness requires an understanding of the relationship among extracurricular activities, learning approach and academic performance and, it is argued, this helps educators develop techniques designed to enrich learning effectiveness. Biggs' Presage-Process-Product model on student learning has identified the relationship among…

  11. Meta-Learning Approach for Automatic Parameter Tuning: A Case Study with Educational Datasets

    Science.gov (United States)

    Molina, M. M.; Luna, J. M.; Romero, C.; Ventura, S.

    2012-01-01

    This paper proposes to the use of a meta-learning approach for automatic parameter tuning of a well-known decision tree algorithm by using past information about algorithm executions. Fourteen educational datasets were analysed using various combinations of parameter values to examine the effects of the parameter values on accuracy classification.…

  12. Approaching Knowledge Management through the Lens of the Knowledge Life Cycle: A Case Study Investigation

    Science.gov (United States)

    Fowlin, Julaine M.; Cennamo, Katherine S.

    2017-01-01

    More organizational leaders are recognizing that their greatest competitive advantage is the knowledge base of their employees and for organizations to thrive knowledge management (KM) systems need to be in place that encourage the natural interplay and flow of tacit and explicit knowledge. Approaching KM through the lens of the knowledge life…

  13. Lifeline electric rates and alternative approaches to the problems of low-income ratepayers. Ten case studies of implemented programs

    Energy Technology Data Exchange (ETDEWEB)

    1980-07-01

    Program summaries, issue developments, governmental processes, and impacts are discussed for 10 case studies dealing with lifeline electric rates and alternative approaches to the problems of low-income ratepayers, namely; the Boston Edison rate freeze; the California lifeline; Florida Power and Light conservation rate; the Iowa-Illinois Gas and Electric small-use rate; the Maine demonstration lifeline program; the Massachusetts Electric Company A-65 rate; the Michigan optional senior citizen rate; the Narragansett Electric Company A-65 SSI rate; the Northern States Power Company conservation rate break; and the Potomac Electric Power Company rate freeze. (MCW)

  14. CASE STUDY

    African Journals Online (AJOL)

    HIV infection has several oral manifestations, including oral candidiasis and oral hairy leucoplakia. Occasionally unusual presentations requiring rigorous investigations are seen, and in these cases the diagnosis sometimes remains a dilemma owing to limited investigation facilities.1-3 We present the case of a patient who.

  15. Recovering Process from Child Sexual Abuse During Adulthood from an Integrative Approach to Solution-Focused Therapy: A Case Study.

    Science.gov (United States)

    Gonzalez, Carolina

    2017-10-01

    In recent times, strengths-based recovery approaches that focus on the present and build strategies that look toward the future have become popular. However, some cases require the consideration of experiences from previous stages of the clients' development. This single-case study explores the psychotherapeutic process of a middle-aged woman who presented with a history of child sexual abuse (incest) and a long-term adult diagnosis of depression that was treated in public health services. This psychotherapy involved an integrative approach to solution-focused therapy; specifically, the approach proposed by Yvonne Dolan to work with adult survivors of sexual abuse, in conjunction with techniques and strategies from the transtheoretical model. Measures incorporating therapeutic working alliance and outcomes were administered over sessions. Results showed positive outcomes from this therapeutic intervention, which remained at 3-month and 12-month follow-ups. Implications for practitioners' specialist practice in health services are discussed, given the complexity of comorbid mental health conditions with a history of child sexual abuse.

  16. Case Study Exploring the Use of an Interdisciplinary Approach to Teach a High School Mathematics and Science Topic

    Science.gov (United States)

    Winkelhake, Kelly M.

    This participatory case study was conducted to describe the value of an interdisciplinary teaching approach for a high school mathematics and science topic from the perspective of the students and the teacher. The topic of logarithms was selected for this lesson because it is a concept that students learn in both their high school mathematics and science courses. The teacher researcher, a high school mathematics teacher, worked with twelve student participants from a 9th and 10th grade Geometry class, along with four science and two mathematics teachers. The data collected in this study serves as a reminder of the many complexities of interdisciplinary work. This specific interdisciplinary study, signified by three overall themes, unraveled some of these complexities of the interdisciplinary approach in general. In all, the study demonstrated the utility of developing a shared language, gaining understanding of the complexities of interdisciplinary work, and sharing positive student experiences of an interdisciplinary lesson. These three themes serve as a step forward in the overall research of interdisciplinary mathematics and science work. A significant amount of additional research is needed to compare the actual student learning outcomes for interdisciplinary work versus discipline specific work. The data from this study, however, shows that as teachers work to create an interdisciplinary approach, teachers from different disciplines produce such a thoughtful and positive dialogue that only enhances student learning.

  17. “Product-Process-Machine” System Modeling: Approach and Industrial Case Studies

    OpenAIRE

    Smirnov, Alexander; Sandkuhl, Kurt; Shilov, Nikolay; Kashevnik, Alexey

    2013-01-01

    Part 6: Enterprise Modelling Cases; International audience; Global trends in the worldwide economy lead to new challenges for manufacturing enterprises and to new requirements regarding modeling industrial organizations, like integration of real-time information from operations and information about neighboring enterprises in the value network. Consequently, there is a need to design new, knowledge-based workflows and supporting software systems to increase efficiency of designing and maintai...

  18. Tall concrete buildings subject to vertically moving fires: A case study approach

    OpenAIRE

    Fletcher, Ian A

    2009-01-01

    Fire in buildings can have a severe impact in terms of both human safety and potential economic loss. This is especially true in the case of fires of such severity that the building structure is damaged. Concrete buildings are traditionally regarded as safe in a fire situation as concrete is non-flammable and exhibits highly insulating material properties. The majority of current research relating to the impact of fire on structures examines other forms of construction. Research of concr...

  19. Bio-Inspired Design Approach Analysis: A Case Study of Antoni Gaudi and Santiago Calatrava

    OpenAIRE

    Marzieh Imani

    2017-01-01

    Antoni Gaudi and Santiago Calatrava have reputation for designing bio-inspired creative and technical buildings. Even though they have followed different independent approaches towards design, the source of bio-inspiration seems to be common. Taking a closer look at their projects reveals that Calatrava has been influenced by Gaudi in terms of interpreting nature and applying natural principles into the design process. This research firstly discusses the dialogue between Biomimicry and archit...

  20. Development of a Portfolio Management Approach with Case Study of the NASA Airspace Systems Program

    Science.gov (United States)

    Neitzke, Kurt W.; Hartman, Christopher L.

    2012-01-01

    A portfolio management approach was developed for the National Aeronautics and Space Administration s (NASA s) Airspace Systems Program (ASP). The purpose was to help inform ASP leadership regarding future investment decisions related to its existing portfolio of advanced technology concepts and capabilities (C/Cs) currently under development and to potentially identify new opportunities. The portfolio management approach is general in form and is extensible to other advanced technology development programs. It focuses on individual C/Cs and consists of three parts: 1) concept of operations (con-ops) development, 2) safety impact assessment, and 3) benefit-cost-risk (B-C-R) assessment. The first two parts are recommendations to ASP leaders and will be discussed only briefly, while the B-C-R part relates to the development of an assessment capability and will be discussed in greater detail. The B-C-R assessment capability enables estimation of the relative value of each C/C as compared with all other C/Cs in the ASP portfolio. Value is expressed in terms of a composite weighted utility function (WUF) rating, based on estimated benefits, costs, and risks. Benefit utility is estimated relative to achieving key NAS performance objectives, which are outlined in the ASP Strategic Plan.1 Risk utility focuses on C/C development and implementation risk, while cost utility focuses on the development and implementation portions of overall C/C life-cycle costs. Initial composite ratings of the ASP C/Cs were successfully generated; however, the limited availability of B-C-R information, which is used as inputs to the WUF model, reduced the meaningfulness of these initial investment ratings. Development of this approach, however, defined specific information-generation requirements for ASP C/C developers that will increase the meaningfulness of future B-C-R ratings.

  1. The Development of Quality Control Genotyping Approaches: A Case Study Using Elite Maize Lines.

    Directory of Open Access Journals (Sweden)

    Jiafa Chen

    Full Text Available Quality control (QC of germplasm identity and purity is a critical component of breeding and conservation activities. SNP genotyping technologies and increased availability of markers provide the opportunity to employ genotyping as a low-cost and robust component of this QC. In the public sector available low-cost SNP QC genotyping methods have been developed from a very limited panel of markers of 1,000 to 1,500 markers without broad selection of the most informative SNPs. Selection of optimal SNPs and definition of appropriate germplasm sampling in addition to platform section impact on logistical and resource-use considerations for breeding and conservation applications when mainstreaming QC. In order to address these issues, we evaluated the selection and use of SNPs for QC applications from large DArTSeq data sets generated from CIMMYT maize inbred lines (CMLs. Two QC genotyping strategies were developed, the first is a "rapid QC", employing a small number of SNPs to identify potential mislabeling of seed packages or plots, the second is a "broad QC", employing a larger number of SNP, used to identify each germplasm entry and to measure heterogeneity. The optimal marker selection strategies combined the selection of markers with high minor allele frequency, sampling of clustered SNP in proportion to marker cluster distance and selecting markers that maintain a uniform genomic distribution. The rapid and broad QC SNP panels selected using this approach were further validated using blind test assessments of related re-generation samples. The influence of sampling within each line was evaluated. Sampling 192 individuals would result in close to 100% possibility of detecting a 5% contamination in the entry, and approximately a 98% probability to detect a 2% contamination of the line. These results provide a framework for the establishment of QC genotyping. A comparison of financial and time costs for use of these approaches across different

  2. Analysis Of A Neuro-Fuzzy Approach Of Air Pollution: Building A Case Study

    Directory of Open Access Journals (Sweden)

    Ciprian-Daniel NEAGU

    2001-12-01

    Full Text Available This work illustrates the necessity of an Artificial Intelligence (AI-based approach of air quality in urban and industrial areas. Some related results of Artificial Neural Networks (ANNs and Fuzzy Logic (FL for environmental data are considered: ANNs are proposed to the problem of short-term predicting of air pollutant concentrations in urban/industrial areas, with a special focus in the south-eastern Romania. The problems of designing a database about air quality in an urban/industrial area are discussed. First results confirm ANNs as an improvement of classical models and show the utility of ANNs in a well built air monitoring center.

  3. Application of dynamic probabilistic safety assessment approach for accident sequence precursor analysis: Case study for steam generator tube rupture

    International Nuclear Information System (INIS)

    Lee, Han Sul; Heo, Gyun Young; Kim, Tae Wan

    2017-01-01

    The purpose of this research is to introduce the technical standard of accident sequence precursor (ASP) analysis, and to propose a case study using the dynamic-probabilistic safety assessment (D-PSA) approach. The D-PSA approach can aid in the determination of high-risk/low-frequency accident scenarios from all potential scenarios. It can also be used to investigate the dynamic interaction between the physical state and the actions of the operator in an accident situation for risk quantification. This approach lends significant potential for safety analysis. Furthermore, the D-PSA approach provides a more realistic risk assessment by minimizing assumptions used in the conventional PSA model so-called the static-PSA model, which are relatively static in comparison. We performed risk quantification of a steam generator tube rupture (SGTR) accident using the dynamic event tree (DET) methodology, which is the most widely used methodology in D-PSA. The risk quantification results of D-PSA and S-PSA are compared and evaluated. Suggestions and recommendations for using D-PSA are described in order to provide a technical perspective

  4. Flood probability quantification for road infrastructure: Data-driven spatial-statistical approach and case study applications.

    Science.gov (United States)

    Kalantari, Zahra; Cavalli, Marco; Cantone, Carolina; Crema, Stefano; Destouni, Georgia

    2017-03-01

    Climate-driven increase in the frequency of extreme hydrological events is expected to impose greater strain on the built environment and major transport infrastructure, such as roads and railways. This study develops a data-driven spatial-statistical approach to quantifying and mapping the probability of flooding at critical road-stream intersection locations, where water flow and sediment transport may accumulate and cause serious road damage. The approach is based on novel integration of key watershed and road characteristics, including also measures of sediment connectivity. The approach is concretely applied to and quantified for two specific study case examples in southwest Sweden, with documented road flooding effects of recorded extreme rainfall. The novel contributions of this study in combining a sediment connectivity account with that of soil type, land use, spatial precipitation-runoff variability and road drainage in catchments, and in extending the connectivity measure use for different types of catchments, improve the accuracy of model results for road flood probability. Copyright © 2016 Elsevier B.V. All rights reserved.

  5. A Logic-Based Psychotherapy Approach to Treating Patients Which Focuses on Faultless Logical Functioning: A Case Study Method

    Directory of Open Access Journals (Sweden)

    Fernando Almeida

    2017-12-01

    Full Text Available Many clinical patients present to mental health clinics with depressive symptoms, anxiety, psychosomatic complaints, and sleeping problems. These symptoms which originated may originate from marital problems, conflictual interpersonal relationships, problems in securing work, and housing issues, among many others. These issues might interfere which underlie the difficulties that with the ability of the patients face in maintaining faultless logical reasoning (FLR and faultless logical functioning (FLF. FLR implies to assess correctly premises, rules, and conclusions. And FLF implies assessing not only FLR, but also the circumstances, life experience, personality, events that validate a conclusion. Almost always, the symptomatology is accompanied by intense emotional changes. Clinical experience shows that a logic-based psychotherapy (LBP approach is not practiced, and that therapists’ resort to psychopharmacotherapy or other types of psychotherapeutic approaches that are not focused on logical reasoning and, especially, logical functioning. Because of this, patients do not learn to overcome their reasoning and functioning errors. The aim of this work was to investigate how LBP works to improve the patients’ ability to think and function in a faultless logical way. This work describes the case studies of three patients. For this purpose we described the treatment of three patients. With this psychotherapeutic approach, patients gain knowledge that can then be applied not only to the issues that led them to the consultation, but also to other problems they have experienced, thus creating a learning experience and helping to prevent such patients from becoming involved in similar problematic situations. This highlights that LBP is a way of treating symptoms that interfere on some level with daily functioning. This psychotherapeutic approach is relevant for improving patients’ quality of life, and it fills a gap in the literature by describing

  6. Using the social entrepreneurship approach to generate innovative and sustainable malaria diagnosis interventions in Tanzania: a case study

    Science.gov (United States)

    2010-01-01

    Background There have been a number of interventions to date aimed at improving malaria diagnostic accuracy in sub-Saharan Africa. Yet, limited success is often reported for a number of reasons, especially in rural settings. This paper seeks to provide a framework for applied research aimed to improve malaria diagnosis using a combination of the established methods, participatory action research and social entrepreneurship. Methods This case study introduces the idea of using the social entrepreneurship approach (SEA) to create innovative and sustainable applied health research outcomes. The following key elements define the SEA: (1) identifying a locally relevant research topic and plan, (2) recognizing the importance of international multi-disciplinary teams and the incorporation of local knowledge, (3) engaging in a process of continuous innovation, adaptation and learning, (4) remaining motivated and determined to achieve sustainable long-term research outcomes and, (5) sharing and transferring ownership of the project with the international and local partner. Evaluation The SEA approach has a strong emphasis on innovation lead by local stakeholders. In this case, innovation resulted in a unique holistic research program aimed at understanding patient, laboratory and physician influences on accurate diagnosis of malaria. An evaluation of milestones for each SEA element revealed that the success of one element is intricately related to the success of other elements. Conclusions The SEA will provide an additional framework for researchers and local stakeholders that promotes innovation and adaptability. This approach will facilitate the development of new ideas, strategies and approaches to understand how health issues, such as malaria, affect vulnerable communities. PMID:20128922

  7. Using the social entrepreneurship approach to generate innovative and sustainable malaria diagnosis interventions in Tanzania: a case study.

    Science.gov (United States)

    Allen, Lisa K; Hetherington, Erin; Manyama, Mange; Hatfield, Jennifer M; van Marle, Guido

    2010-02-03

    There have been a number of interventions to date aimed at improving malaria diagnostic accuracy in sub-Saharan Africa. Yet, limited success is often reported for a number of reasons, especially in rural settings. This paper seeks to provide a framework for applied research aimed to improve malaria diagnosis using a combination of the established methods, participatory action research and social entrepreneurship. This case study introduces the idea of using the social entrepreneurship approach (SEA) to create innovative and sustainable applied health research outcomes. The following key elements define the SEA: (1) identifying a locally relevant research topic and plan, (2) recognizing the importance of international multi-disciplinary teams and the incorporation of local knowledge, (3) engaging in a process of continuous innovation, adaptation and learning, (4) remaining motivated and determined to achieve sustainable long-term research outcomes and, (5) sharing and transferring ownership of the project with the international and local partner. The SEA approach has a strong emphasis on innovation lead by local stakeholders. In this case, innovation resulted in a unique holistic research program aimed at understanding patient, laboratory and physician influences on accurate diagnosis of malaria. An evaluation of milestones for each SEA element revealed that the success of one element is intricately related to the success of other elements. The SEA will provide an additional framework for researchers and local stakeholders that promotes innovation and adaptability. This approach will facilitate the development of new ideas, strategies and approaches to understand how health issues, such as malaria, affect vulnerable communities.

  8. Using the social entrepreneurship approach to generate innovative and sustainable malaria diagnosis interventions in Tanzania: a case study

    Directory of Open Access Journals (Sweden)

    Hatfield Jennifer M

    2010-02-01

    Full Text Available Abstract Background There have been a number of interventions to date aimed at improving malaria diagnostic accuracy in sub-Saharan Africa. Yet, limited success is often reported for a number of reasons, especially in rural settings. This paper seeks to provide a framework for applied research aimed to improve malaria diagnosis using a combination of the established methods, participatory action research and social entrepreneurship. Methods This case study introduces the idea of using the social entrepreneurship approach (SEA to create innovative and sustainable applied health research outcomes. The following key elements define the SEA: (1 identifying a locally relevant research topic and plan, (2 recognizing the importance of international multi-disciplinary teams and the incorporation of local knowledge, (3 engaging in a process of continuous innovation, adaptation and learning, (4 remaining motivated and determined to achieve sustainable long-term research outcomes and, (5 sharing and transferring ownership of the project with the international and local partner. Evaluation The SEA approach has a strong emphasis on innovation lead by local stakeholders. In this case, innovation resulted in a unique holistic research program aimed at understanding patient, laboratory and physician influences on accurate diagnosis of malaria. An evaluation of milestones for each SEA element revealed that the success of one element is intricately related to the success of other elements. Conclusions The SEA will provide an additional framework for researchers and local stakeholders that promotes innovation and adaptability. This approach will facilitate the development of new ideas, strategies and approaches to understand how health issues, such as malaria, affect vulnerable communities.

  9. Simulation Modelling Approach to Human Resources Management: Burnout Effect Case Study

    Directory of Open Access Journals (Sweden)

    Marjana Merkac Skok

    2013-07-01

    Full Text Available Human resources management has become one of the most important leverages in organizations for gaining competitive advantage. However, human resources management is in many occasions prone to nonlinear feedbacks with delayed effect. Burnout effect is one of the problems that are especially often faced by the experts in learning society. Burnout effect occurs because modern society is a fast-moving, achievement-oriented, very competitive and lead to many stressful situations, which individuals cannot handle always. We propose usage of system dynamics methodology in exploration of burnout effect, and its usage in learning of consequences of burnout effect. Several experiments have been conducted and presented which indicate increase and collapse behaviour in case of burnout experience by the individual. Experiments with the model explore the presence of burnout effect in several different situations, with different pace of its manifestations.

  10. Equity in transportation: new approach in transport planning – preliminary results of case study in Cracow

    Directory of Open Access Journals (Sweden)

    Lidia ZAKOWSKA

    2014-09-01

    Full Text Available The goal of the paper is to present the concept of equity as a new approach in transport and land-use planning. This concept is consistent with the objectives of sustainable development and it is becoming more common in European and world literature. Understanding the idea of equity in the context of the transport system development is very important in creating sustainable cities and regions without discriminating any social groups and creating a cohesive society not exposed to social exclusion due to lack of access to primary and secondary activities. The paper presents some results of the preliminary analysis on transport equity in Cracow. The basic equity level which has been considered here concerns senior citizens, older people living in Cracow area, in terms of their accessibility to transport infrastructure. Taking into account living conditions of elderly pedestrians, contour measures were used, in order to determine accessibility as equity indicator.

  11. CASE STUDY

    African Journals Online (AJOL)

    vascular disease necessitating bilateral amputations at the knee. The patient had no ... patients on long-term treatment and those on protease inhibitor (PI) regimens.1,2 We present a rare case of atypical lipodystrophy, presenting as multiple subcutaneous lipomas, in a patient who had been on a non-PI. ARV regimen for 6 ...

  12. Case study

    African Journals Online (AJOL)

    Point mutations in the human fibroblast growth factor receptor 3 (FGFR3) gene are well documented in inherited skeletal anomalies, such as achondroplasia and thanatophoric dysplasia, that are associated in most cases of dwarfism.10 In addition, an oncogenic role has been proposed for mutant FGFR.11 Recently,.

  13. Building theories from case study research: the progressive case study

    NARCIS (Netherlands)

    Steenhuis, H.J.; de Bruijn, E.J.

    2006-01-01

    Meredith (1998) argues for more case and field research studies in the field of operations management. Based on a literature review, we discuss several existing approaches to case studies and their characteristics. These approaches include; the Grounded Theory approach which proposes no prior

  14. QFD-ANP Approach for the Conceptual Design of Research Vessels: A Case Study

    Science.gov (United States)

    Venkata Subbaiah, Kambagowni; Yeshwanth Sai, Koneru; Suresh, Challa

    2016-10-01

    Conceptual design is a subset of concept art wherein a new idea of product is created instead of a visual representation which would directly be used in a final product. The purpose is to understand the needs of conceptual design which are being used in engineering designs and to clarify the current conceptual design practice. Quality function deployment (QFD) is a customer oriented design approach for developing new or improved products and services to enhance customer satisfaction. House of quality (HOQ) has been traditionally used as planning tool of QFD which translates customer requirements (CRs) into design requirements (DRs). Factor analysis is carried out in order to reduce the CR portions of HOQ. The analytical hierarchical process is employed to obtain the priority ratings of CR's which are used in constructing HOQ. This paper mainly discusses about the conceptual design of an oceanographic research vessel using analytical network process (ANP) technique. Finally the QFD-ANP integrated methodology helps to establish the importance ratings of DRs.

  15. Approach and case-study of green infrastructure screening analysis for urban stormwater control.

    Science.gov (United States)

    Eaton, Timothy T

    2018-03-01

    Urban stormwater control is an urgent concern in megacities where increased impervious surface has disrupted natural hydrology. Water managers are increasingly turning to more environmentally friendly ways of capturing stormwater, called Green Infrastructure (GI), to mitigate combined sewer overflow (CSO) that degrades local water quality. A rapid screening approach is described to evaluate how GI strategies can reduce the amount of stormwater runoff in a low-density residential watershed in New York City. Among multiple possible tools, the L-THIA LID online software package, using the SCS-CN method, was selected to estimate relative runoff reductions expected with different strategies in areas of different land uses in the watershed. Results are sensitive to the relative areas of different land uses, and show that bioretention and raingardens provide the maximum reduction (∼12%) in this largely residential watershed. Although commercial, industrial and high-density residential areas in the watershed are minor, larger runoff reductions from disconnection strategies and porous pavement in parking lots are also possible. Total stormwater reductions from various combinations of these strategies can reach 35-55% for individual land uses, and between 23% and 42% for the entire watershed. Copyright © 2017. Published by Elsevier Ltd.

  16. Municipal solid waste transportation optimisation with vehicle routing approach: case study of Pontianak City, West Kalimantan

    Science.gov (United States)

    Kamal, M. A.; Youlla, D.

    2018-03-01

    Municipal solid waste (MSW) transportation in Pontianak City becomes an issue that need to be tackled by the relevant agencies. The MSW transportation service in Pontianak City currently requires very high resources especially in vehicle usage. Increasing the number of fleets has not been able to increase service levels while garbage volume is growing every year along with population growth. In this research, vehicle routing optimization approach was used to find optimal and efficient routes of vehicle cost in transporting garbage from several Temporary Garbage Dump (TGD) to Final Garbage Dump (FGD). One of the problems of MSW transportation is that there is a TGD which exceed the the vehicle capacity and must be visited more than once. The optimal computation results suggest that the municipal authorities only use 3 vehicles from 5 vehicles provided with the total minimum cost of IDR. 778,870. The computation time to search optimal route and minimal cost is very time consuming. This problem is influenced by the number of constraints and decision variables that have are integer value.

  17. A Remote Sensing Approach for Urban Environmental Decision-Making: An Atlanta, Georgia Case Study

    Science.gov (United States)

    Quattrochi, Dale A.; Luvall, Jeffrey C.; Rickman, Douglas L.; Laymon, Charles A.; Estes, Maurice G., Jr.; Howell, Burgess F.; Arnold, James E. (Technical Monitor)

    2002-01-01

    Unquestionably, urbanization causes tremendous changes in land cover and land use, as well as impacting a host of environmental characteristics. For example, unlike natural surfaces, urban surfaces have very different thermal energy properties whereby they store solar energy throughout the day and continue to release it as heat well after sunset. This effect, known as the 'Urban Heat Island', serves as a catalyst for chemical reactions from vehicular exhaust and industrial activities leading to the deterioration in air quality, especially exacerbating the production of ground level ozone. 'Cool Community' strategies that utilize remote sensing data, are now being implemented as a way to reduce the impacts of the urban heat island and its subsequent environmental impacts. This presentation focuses on how remote sensing data have been used to provide descriptive and quantitative data for characterizing the Atlanta, Georgia metropolitan area - particularly for measuring surface energy fluxes, such as the thermal or "heat" energy that emanates from different land cover types across the Atlanta urban landscape. In turn, this information is useful for developing a better understanding of how the thermal characteristics of the city surface affect the urban heat island phenomena and, ultimately, air quality and other environmental parameters over the Atlanta metropolitan region. Additionally, this paper also provides insight on how remote sensing, with its synoptic approach, can be used to provide urban planners, local, state, and federal government officials, and other decision-makers, as well as the general public, with information to better manage urban areas as sustainable environments.

  18. Practical Functional Approach to Quality Assessment in Subtitling: Pocahontas II – Case Study

    Directory of Open Access Journals (Sweden)

    Alaa Eddin Hussain

    2016-06-01

    Full Text Available The present research work deals with subtitling errors encountered by simulators and proof-readers. The resultant work is of significant contribution to problem decision makings in the field of quality assessment of audiovisual translation (AVT. The outcome of this paper is the result of accumulated working experience in this domain. The relevant errors are related to syntax, spelling, style, length of sentences, lack of clarity, and gender-related issues. These errors though made by one subtitler who has translated the animation feature film Pocahontas II released in 2012, are still typical and therefore a thorough investigation has been done and a set of linguistic rules has been suggested as a guideline for the audiovisual industry. These rules are to be added to the technical and software requirements sent by subtitling companies (such as the number of characters per line, the font, the reading speed per minute, and punctuation. This set of rules helps monitor the quality of the subtitled target text (TT.     Keywords: audiovisual translation, subtitling, quality assessment, practical functional approach, Arabic-English simulation

  19. Developing a frenotomy policy at one medical center: a case study approach.

    Science.gov (United States)

    Masaitis, N S; Kaempf, J W

    1996-09-01

    The objective of this study was to change procedures in our medical center regarding frenotomy for ankyloglossia (tongue-tie). The medical and breastfeeding outcomes of 36 fullterm infants who received frenotomies were studied. The information was used to develop frenotomy eligibility standards that would guide other physicians and insure timely treatment to avoid breastfeeding cessation.

  20. Ayurvedic approach in the management of spinal cord injury: A case study.

    Science.gov (United States)

    Singh, Sarvesh Kumar; Rajoria, Kshipra

    2015-01-01

    Spinal cord injury (SCI) is associated with consequences such as full loss of spinal movements, incontinence of bladder functions, bed sores, etc. There is no satisfactory treatment available in biomedicine with only limited treatments only for enhancement of spinal cord function. These treatments have many limitations. Ayurvedic drugs and Pancakarma procedures have been in use to treat such conditions since a long time. We present a case of SCI with lesion at C4 level which was treated for 2 months with an Ayurvedic combined intervention. The combined treatment plan involved Ayurvedic oral medications (Brhadvātacintāmaṇi rasa - 125 mg, Ardhanāgavātāri rasa - 125 mg, Daśamūla kvātha - 40 ml, Aśvagandhācūrṇa [powder of Withania somnifera DUNAL] - 3 g, Amṛtā [Tinospora cordifolia WILLD] - 500 mg, Muktāśukti piṣṭi - 500 mg and Trayodaśāṅga guggulu - 500 mg) twice daily. Combined procedures involved such as śāliṣaṣṭika piṇḍasvedana (sudation with medicated cooked bolus of rice) every day for 2 months and Mātrā basti (enema) for first 15 days with Aśvagandhā oil. From 16(th) day, Mustādi yāpana basti (MYB, enema with medicated milk) was given for 16 days. After an interval of 7 days, MYB was further repeated for next 16 days. Substantial clinical improvement was reported after 2 months of the Ayurvedic treatment in existing neurological deficits and in quality of life.

  1. Ayurvedic approach in the management of spinal cord injury: A case study

    Directory of Open Access Journals (Sweden)

    Sarvesh Kumar Singh

    2015-01-01

    Full Text Available Spinal cord injury (SCI is associated with consequences such as full loss of spinal movements, incontinence of bladder functions, bed sores, etc. There is no satisfactory treatment available in biomedicine with only limited treatments only for enhancement of spinal cord function. These treatments have many limitations. Ayurvedic drugs and Pancakarma procedures have been in use to treat such conditions since a long time. We present a case of SCI with lesion at C4 level which was treated for 2 months with an Ayurvedic combined intervention. The combined treatment plan involved Ayurvedic oral medications (Brhadvātacintāmaṇi rasa - 125 mg, Ardhanāgavātāri rasa - 125 mg, Daśamūla kvātha - 40 ml, Aśvagandhācūrṇa [powder of Withania somnifera DUNAL] - 3 g, Amṛtā [Tinospora cordifolia WILLD] - 500 mg, Muktāśukti piṣṭi - 500 mg and Trayodaśāṅga guggulu - 500 mg twice daily. Combined procedures involved such as śāliṣaṣṭika piṇḍasvedana (sudation with medicated cooked bolus of rice every day for 2 months and Mātrā basti (enema for first 15 days with Aśvagandhā oil. From 16 th day, Mustādi yāpana basti (MYB, enema with medicated milk was given for 16 days. After an interval of 7 days, MYB was further repeated for next 16 days. Substantial clinical improvement was reported after 2 months of the Ayurvedic treatment in existing neurological deficits and in quality of life.

  2. DEVELOPING "SEKOLAH PETERNAKAN RAKYAT" PROGRAM USING THE BUSINESS MODEL CANVAS APPROACH (CASE STUDY: BOJONEGORO REGENCY

    Directory of Open Access Journals (Sweden)

    Friesgina Wiska

    2016-05-01

    Full Text Available SPR Maju Bersama is one of the location where the concept of "Sekolah Peternakan Rakyat (SPR" is implemented, with the aim to encourage small-scale beef cattle breeder establish a professional collective enterprise under one management. SPR is designed to  change the mindset, knowledge and capability of the beef cattle breeder to become the best and self-reliant  entrepreneurs in the beef cattle business. In the effort to achieve its objective, the organization has not been able to carry out the model business effectively thus new strategies are needed to improve the business model. The objectives of this research are: 1 identify the present business model carried out by SPR Maju Bersama; 2 to carry out SWOT evaluation on each element of the business model; 3 formulate strategic to improve the business model that is formulated in an accurate programs. This research used the combination of business model canvas (BMC approach and SWOT matrix analysis. The results it is concluded that the SPR Maju Bersama need to improve the business model through alternatives strategies that have been developed include: 1 increase the number of farmer members; 2 apply the concept of "agrosilvopastura" to optimize the management of natural resources; 3 increase the intensity of assistance through e-learning; 4 improve the quality and intensity of the relationship between management and farmers; 5 develop curricula, programs and guide books as well as strengthen the system of membership; 6 expand the partnership by utilizing information technology and existing business partners; 7 establish training centers and services as a resource in the field of SPR and beef cattle; 8 utilizes a strong partnership to change the mindset of farmers; 9 increasing leadership skill and the ability to use communications technology in the management of SPR.Keywords: sekolah peternakan rakyat, Bojonegoro, BMC, matrix SWOT

  3. Human-centered approaches in geovisualization design: investigating multiple methods through a long-term case study.

    Science.gov (United States)

    Lloyd, David; Dykes, Jason

    2011-12-01

    Working with three domain specialists we investigate human-centered approaches to geovisualization following an ISO13407 taxonomy covering context of use, requirements and early stages of design. Our case study, undertaken over three years, draws attention to repeating trends: that generic approaches fail to elicit adequate requirements for geovis application design; that the use of real data is key to understanding needs and possibilities; that trust and knowledge must be built and developed with collaborators. These processes take time but modified human-centred approaches can be effective. A scenario developed through contextual inquiry but supplemented with domain data and graphics is useful to geovis designers. Wireframe, paper and digital prototypes enable successful communication between specialist and geovis domains when incorporating real and interesting data, prompting exploratory behaviour and eliciting previously unconsidered requirements. Paper prototypes are particularly successful at eliciting suggestions, especially for novel visualization. Enabling specialists to explore their data freely with a digital prototype is as effective as using a structured task protocol and is easier to administer. Autoethnography has potential for framing the design process. We conclude that a common understanding of context of use, domain data and visualization possibilities are essential to successful geovis design and develop as this progresses. HC approaches can make a significant contribution here. However, modified approaches, applied with flexibility, are most promising. We advise early, collaborative engagement with data – through simple, transient visual artefacts supported by data sketches and existing designs – before moving to successively more sophisticated data wireframes and data prototypes. © 2011 IEEE

  4. Soft computing based on hierarchical evaluation approach and criteria interdependencies for energy decision-making problems: A case study

    International Nuclear Information System (INIS)

    Gitinavard, Hossein; Mousavi, S. Meysam; Vahdani, Behnam

    2017-01-01

    In numerous real-world energy decision problems, decision makers often encounter complex environments, in which existent imprecise data and uncertain information lead us to make an appropriate decision. In this paper, a new soft computing group decision-making approach is introduced based on novel compromise ranking method and interval-valued hesitant fuzzy sets (IVHFSs) for energy decision-making problems under multiple criteria. In the proposed approach, the assessment information is provided by energy experts or decision makers based on interval-valued hesitant fuzzy elements under incomplete criteria weights. In this respect, a new ranking index is presented respecting to interval-valued hesitant fuzzy Hamming distance measure to prioritize energy candidates, and criteria weights are computed based on an extended maximizing deviation method by considering the preferences experts' judgments about the relative importance of each criterion. Also, a decision making trial and evaluation laboratory (DEMATEL) method is extended under an IVHF-environment to compute the interdependencies between and within the selected criteria in the hierarchical structure. Accordingly, to demonstrate the applicability of the presented approach a case study and a practical example are provided regarding to hierarchical structure and criteria interdependencies relations for renewable energy and energy policy selection problems. Hence, the obtained computational results are compared with a fuzzy decision-making method from the recent literature based on some comparison parameters to show the advantages and constraints of the proposed approach. Finally, a sensitivity analysis is prepared to indicate effects of different criteria weights on ranking results to present the robustness or sensitiveness of the proposed soft computing approach versus the relative importance of criteria. - Highlights: • Introducing a novel interval-valued hesitant fuzzy compromise ranking method.

  5. A particle swarm approach to solve vehicle routing problem with uncertain demand: A drug distribution case study

    Directory of Open Access Journals (Sweden)

    Babak Farhang Moghadam

    2010-07-01

    Full Text Available During the past few years, there have tremendous efforts on improving the cost of logistics using varieties of Vehicle Routing Problem (VRP models. In fact, the recent rise on fuel prices has motivated many to reduce the cost of transportation associated with their business through an improved implementation of VRP systems. We study a specific form of VRP where demand is supposed to be uncertain with unknown distribution. A Particle Swarm Optimization (PSO is proposed to solve the VRP and the results are compared with other existing methods. The proposed approach is also used for real world case study of drug distribution and the preliminary results indicate that the method could reduce the unmet demand significantly.

  6. Spatial Random Effects Survival Models to Assess Geographical Inequalities in Dengue Fever Using Bayesian Approach: a Case Study

    Science.gov (United States)

    Astuti Thamrin, Sri; Taufik, Irfan

    2018-03-01

    Dengue haemorrhagic fever (DHF) is an infectious disease caused by dengue virus. The increasing number of people with DHF disease correlates with the neighbourhood, for example sub-districts, and the characteristics of the sub-districts are formed from individuals who are domiciled in the sub-districts. Data containing individuals and sub-districts is a hierarchical data structure, called multilevel analysis. Frequently encountered response variable of the data is the time until an event occurs. Multilevel and spatial models are being increasingly used to obtain substantive information on area-level inequalities in DHF survival. Using a case study approach, we report on the implications of using multilevel with spatial survival models to study geographical inequalities in all cause survival.

  7. Evaluating technologies in reproductive health: case studies of a consumer protection approach.

    Science.gov (United States)

    Silver, L D; Castilho, S R

    1998-12-01

    A consumer-protection assessment and action program aimed at improving reproductive health technologies is reviewed. Evaluations employed both literature review, synthesis, market analysis and laboratory testing for conformity to standards of a wide range of products which affect reproductive health on the Brazilian market 1995-1997. Anti-infective gynecological products, ampicillins, condoms, pregnancy tests, hormonal contraceptives, infant formulas, selected teratogens, bromocriptine and prostaglandins were studied. Actions include dissemination in periodicals and the mass media, consumer education, pressure for regulation, negotiations with manufacturers and legal action. The program was effective in improving the supply and regulation of some, but not all products studied. Impact on health and utilization are unknown. A significant proportion of products studied are unsafe, ineffective or of sub-standard quality. A combination of careful scientific work, strong links between scientists and social movements, dissemination and legal action, can effectively improve the quality of products which affect reproductive health.

  8. An optimization approach for communal home meal delivery service : A case study

    NARCIS (Netherlands)

    Bräysy, Olli; Nakari, Pentti; Dullaert, Wout; Neittaanmäki, Pekka

    2009-01-01

    This paper is the first to discuss the communal home meal delivery problem. The problem can be modelled as a multiple travelling salesman problem with time windows, that is closely related to the well-studied vehicle routing problem with time windows. Experimental results are reported for a

  9. A Modular Approach for Training Employees in the Automotive Service Sector: A Case Study in Turkey

    Science.gov (United States)

    Arslan, Ridvan; Kus, Abdil

    2012-01-01

    Certified education aimed at developing and documenting professional growth is an important issue for lifelong learning in developing countries. Some firms and educational institutions have applied different educational models to keep up with technological innovations. This study examines a Turkish programme for employees in the automotive sector…

  10. A process approach to children's understanding of scientific concepts : A longitudinal case study

    NARCIS (Netherlands)

    van der Steen, Steffie; Steenbeek, Henderien; van Dijk, Marijn; van Geert, Paul

    In order to optimally study changes in the complexity of understanding, microgenetic measures are needed, and a coupling of these to longer-term measures. We focus on the interaction dynamics between a 4-year old boy and a researcher while they work on tasks about air pressure in three subsequent

  11. Japanese Approaches to Organizational Internationalization of Universities: A Case Study of Three National University Corporations

    Science.gov (United States)

    Watabe, Yuki

    2010-01-01

    This study aims to develop an understanding of the internationalization processes at universities in Japan by exploring a strategic model in internationally oriented universities. Universities in Japan have experienced university reform since the 1990s. The role and system of Japanese universities have been re-examined due to an emerging global…

  12. A Case Study of a Different Approach to Planning, Management and Evaluation (PME).

    Science.gov (United States)

    Thompson, Hugh L.

    1980-01-01

    Many small, private colleges lack the resources to develop a planning, management and evaluation (PME) system and the result is planning becomes a neglected function. An in-depth study by the Massachusetts Institute of Technology for the Detroit Institute of Technology is described. (MLW)

  13. Food for Life: evaluation of the impact of the Hospital Food Programme in England using a case study approach.

    Science.gov (United States)

    Gray, Selena; Orme, Judy; Pitt, Hannah; Jones, Matthew

    2017-10-01

    To evaluate the impact and challenges of implementing a Food for Life approach within three pilot NHS sites in 2014/2015 in England. Food for Life is an initiative led by the Soil Association, a non-governmental organisation in the UK that aims to encourage a healthy, sustainable food culture across communities. A case-study approach was undertaken using semi-structured interviews with staff and key stakeholders together with analysis of relevant documents such as meeting minutes, strategic plans and reports. Three NHS Trusts in England. Staff and key stakeholders. Synthesis of key findings from semi-structured interviews and analysis of relevant documents. Key themes included the potential to influence contracting processes; measuring quality; food for staff and visitors; the role of food in hospitals, and longer term sustainability and impact. Participants reported that adopting the Food for Life approach had provided enormous scope to improve the quality of food in hospital settings and had provided levers and external benchmarks for use in contracting to help drive up standards of the food provided by external contractors for patients and staff. This was demonstrated by the achievement of an FFLCM for staff and visitor catering in all three organisations. Participants all felt that the importance of food in hospitals is not always recognised. Engagement with Food for Life can produce a significant change in the focus on food within hospitals, and help to improve the quality of food and mealtime experience for staff, visitors and patients.

  14. Capacity improvement using simulation optimization approaches: A case study in the thermotechnology industry

    Science.gov (United States)

    Yelkenci Köse, Simge; Demir, Leyla; Tunalı, Semra; Türsel Eliiyi, Deniz

    2015-02-01

    In manufacturing systems, optimal buffer allocation has a considerable impact on capacity improvement. This study presents a simulation optimization procedure to solve the buffer allocation problem in a heat exchanger production plant so as to improve the capacity of the system. For optimization, three metaheuristic-based search algorithms, i.e. a binary-genetic algorithm (B-GA), a binary-simulated annealing algorithm (B-SA) and a binary-tabu search algorithm (B-TS), are proposed. These algorithms are integrated with the simulation model of the production line. The simulation model, which captures the stochastic and dynamic nature of the production line, is used as an evaluation function for the proposed metaheuristics. The experimental study with benchmark problem instances from the literature and the real-life problem show that the proposed B-TS algorithm outperforms B-GA and B-SA in terms of solution quality.

  15. Approaches to Solidarity. A Complementary Currency's Case Study in Volos, Greece.

    OpenAIRE

    Antonaki, Marianthi

    2015-01-01

    This master's thesis investigates the complementary currency TEM (Local Alternative Unit) operating in the city of Volos, Greece, during 2013-2014. TEM functions on the principles of LETS (Local Exchange Trading Systems) type. The study focuses on the role of solidarity in TEM, as an example of grassroots organisation. A research question seeks the impact of solidary action on the scheme's members, by examining the experimental housing project which was launched by TEM in 2011. An additional ...

  16. Case Study: Testing with Case Studies

    Science.gov (United States)

    Herreid, Clyde Freeman

    2015-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue discusses using case studies to test for knowledge or lessons learned.

  17. Economic Value Approach to Industrial Water Demand Management, A Case Study of Chemical Plants

    Directory of Open Access Journals (Sweden)

    morteza tahami pour zarandi

    2017-03-01

    Full Text Available Limitations in water supply to meet the increasing demand have encouraged both planners and researchers to focus attention on water demand management, in which such economic tools as the water pricing system play a major role. A fundamental component of the pricing system is the estimation of the economic value of water, which reflects a firm’s maximum affordable water price or the ultimate elasticity of industrial water. The present study was conducted to estimate the economic value of water for basic chemical plants, excluding fertilizers and nitrogen compounds (code 2411, representing the four-digit ISIC industrial codes which account for about 14% of the total industrial water consumption. The econometric method of production function within the framework of panel data and the residual method were used. Data were collected from the Census of medium-sized businesses carried out by the Statistical Center of Iran over the period 1997–2013.  Results showed that one cubic meter of water allocated to the plants surveyed creates a value of 3,7071 Rials, which shows a large gap with the current purchase price of 5685 Rials. Moreover, it was found that the present water prices account for only about 1.3 percent of the total production cost of basic chemicals, excluding fertilizers and nitrogen compounds. It may, thus, be concluded that it is reasonable to increase the present water tariffs and discriminate among the various manufacturing codes by differences in tariffs in order to achieve water demand management goals. Finally, the information emerging from the study may be exploited to improve the revenues earned by water authorities or to carry out feasibility studies of industrial water development projects.

  18. Discontinuum Modelling Approach for Stress Analysis at a Seismic Source: Case Study

    Science.gov (United States)

    Sainoki, Atsushi; Mitri, Hani S.; Yao, Mike; Chinnasane, Damodara

    2016-12-01

    Rockbursts in underground mines can cause devastating damage to mine workings; hence, it is important to be able to assess the potential for their occurrence. The present study focuses on a large seismic event that took place at an underground base metal mine in Canada. The event took place in a dyke near the 100/900 orebodies on 3880 Level (1180 m below surface) of the Copper Cliff Mine in Sudbury, Canada. A 3D continuum stress analysis of the orebodies, i.e., 100 and 900, using an orebody-wide model encompassing the major geological structures and in situ stress heterogeneity in the mine shows low potential for rockburst at the seismic source location—a result which contradicts the fact that a large seismic event actually took place. A postulation is thus made that there had been highly stressed regions caused by geological disturbances at the source location before mining activities took place. In order to verify the postulation, a further study is undertaken with the discrete element modelling technique, whereby a cube-shaped model containing a fracture network is subjected to a stress state similar to that at the source location. A model parametrical study is conducted with respect to the distribution of the fracture (joint) network and its mechanical properties. The results reveal that when joints are densely distributed at the source location, the stress state becomes significantly burst prone. It is observed that the length, density, stiffness, and orientation of joints have a large influence on the stress state along the joints, while the friction angle, cohesion, and tensile strength do not influence the stress state. A cube-shaped model is constructed with joint sets actually mapped at the mine and a stress analysis is performed. The results demonstrate the generation of highly stressed regions due to the interaction of the joints with the applied in situ stress fields, thus leading to burst-prone conditions. The present study numerically confirms that

  19. Assessment of harmful algal species using different approaches: the case study of the Sardinian coasts

    Directory of Open Access Journals (Sweden)

    C.T. Satta

    2014-04-01

    Full Text Available The presence and distribution of harmful algal species were investigated along the coasts of Sardinia in the summer of 2012. Fourteen potentially noxious taxa were identified at 74 beaches. The majority of the recovered taxa were potentially toxic and/or high biomass producers. Alexandrium taylorii, Gymnodinium instriatum, and Ostreopsis cf. ovata were the most frequent and abundant taxa, although Barrufeta bravensis reached the highest density (4.4 × 106 cells L−1. Barrufeta bravensis, A. taylorii, and G. instriatum were responsible for intense water discoloration at two of the beaches sampled. Polymerase chain reaction (PCR analyses supported the identification of several taxa and decisively identified B. bravensis. PCR assays increased the information available on the species distributions. The locations studied were heterogeneous in their prevailing environmental conditions and their morphodynamic profiles. Statistical analyses indicated that the distributions of harmful algal species correlated with gravel and medium-fine sand substrata. These data provide substantial knowledge on the distributions of harmful algal species on beaches, which have been poorly studied on a global scale. The apparent relationship between noxious species and grain size suggests that vegetative cells may be recruited from cyst beds in beach sediments.

  20. Strategies and approaches to vector control in nine malaria-eliminating countries: a cross-case study analysis.

    Science.gov (United States)

    Smith Gueye, Cara; Newby, Gretchen; Gosling, Roland D; Whittaker, Maxine A; Chandramohan, Daniel; Slutsker, Laurence; Tanner, Marcel

    2016-01-04

    There has been progress towards malaria elimination in the last decade. In response, WHO launched the Global Technical Strategy (GTS), in which vector surveillance and control play important roles. Country experiences in the Eliminating Malaria Case Study Series were reviewed to identify success factors on the road to elimination using a cross-case study analytic approach. Reports were included in the analysis if final English language draft reports or publications were available at the time of analysis (Bhutan, Cape Verde, Malaysia, Mauritius, Namibia, Philippines, Sri Lanka, Turkey, Turkmenistan). A conceptual framework for vector control in malaria elimination was developed, reviewed, formatted as a matrix, and case study data was extracted and entered into the matrix. A workshop was convened during which participants conducted reviews of the case studies and matrices and arrived at a consensus on the evidence and lessons. The framework was revised and a second round of data extraction, synthesis and summary of the case study reports was conducted. Countries implemented a range of vector control interventions. Most countries aligned with integrated vector management, however its impact was not well articulated. All programmes conducted entomological surveillance, but the response (i.e., stratification and targeting of interventions, outbreak forecasting and strategy) was limited or not described. Indoor residual spraying (IRS) was commonly used by countries. There were several examples of severe reductions or halting of IRS coverage and subsequent resurgence of malaria. Funding and operational constraints and poor implementation had roles. Bed nets were commonly used by most programmes; coverage and effectiveness were either not measured or not articulated. Larval control was an important intervention for several countries, preventing re-introduction, however coverage and impact on incidence were not described. Across all interventions, coverage indicators

  1. Bridging the Research to Practice Gap: A Case Study Approach to Understanding EIBI Supports and Barriers in Swedish Preschools

    Directory of Open Access Journals (Sweden)

    Lise ROLL-PETTERSSON

    2016-12-01

    Full Text Available The present study examined proximal and distal barriers and supports within the Swedish service system that may affect implementation of early and intensive behavioral intervention (EIBI for children with autism. A case study approach with roots in ethnography was chosen to explore this issue. Two preschools exemplifying ‘high quality practice’ were studied and information was collected through multiple sources during a 12 month period, this included participant observations, direct observations, semi-structured interviews with key informants; paraprofessionals, parents, special educators, habilitation specialists and a focus group interview. Interview transcripts and field notes were combined and analyzed using an abductive grounded theory approach. Findings highlight the relevance of researchers understanding and taking into consideration the effect that distal variables have on implementation within proximal settings. A theoretical model of factors affecting implementation was conceptualised to include: staff entry knowledge and competence, development through supervision, the role of the preschool administrator, as well as distal influences and inter-organizational tensions, values, and bridges. Findings are discussed within the context of implementation science. Implications for future research are discussed as well as areas in need of further development to bridge the gap between research and practice.

  2. STANDALONE PHOTOVOLTAIC SYSTEMS SIZING OPTIMIZATION USING DESIGN SPACE APPROACH: CASE STUDY FOR RESIDENTIAL LIGHTING LOAD

    Directory of Open Access Journals (Sweden)

    D. F. AL RIZA

    2015-07-01

    Full Text Available This paper presents a sizing optimization methodology of panel and battery capacity in a standalone photovoltaic system with lighting load. Performance of the system is identified by performing Loss of Power Supply Probability (LPSP calculation. Input data used for the calculation is the daily weather data and system components parameters. Capital Cost and Life Cycle Cost (LCC is calculated as optimization parameters. Design space for optimum system configuration is identified based on a given LPSP value, Capital Cost and Life Cycle Cost. Excess energy value is used as an over-design indicator in the design space. An economic analysis, including cost of the energy and payback period, for selected configurations are also studied.

  3. An overview of application of bayesian classifier approach in radioactive tracer technology.case study

    International Nuclear Information System (INIS)

    El-Aseer, A.; Dawood, E.; Ben Ayad, S.; Alwerfalli, M.

    2015-01-01

    The usefulness of implementing a radioactive tracer techniques subjected to varied risk factors. Thus, the setup procedure for the application experimental techniques of radioactive tracer must be evaluated prior the decision action steps. One way of doing this, is to use Bay's theorem techniques. As there is a possibility of classifying the implemented parameters into certain catogries depending on their certainty to effect radioactive tracer technology. In this paper, the radioactive tracer experimental parameters classified accoring to Bayesian theory. Using this theory, one can study the proposed technical systems to determine the probabilities of the effectiveness of any selected parameter among the others. The classification of the applied experimental parameters into suitable or unsuitable in proposed theoretically. Ten parameters used in this experimental data were classified accordingly. The posterior is calculate from the prior and the likelihood previously determined by bayes rule.(author)

  4. An analytic-geospatial approach for sustainable water resource management: a case study in the province of Perugia

    Directory of Open Access Journals (Sweden)

    Stefano Casadei

    2013-09-01

    Full Text Available Water is a strategic, but also highly vulnerable, natural resource. This because the increasing demand from multiple uses, in many cases competing amongst them, seems to influence the concepts of sustainability of the exploitation. From the operational point of view, the studied system is an integrated decision support system. It is not only a platform to exchange information and assessments, but also a tool for conflict resolution, in the management of water resources, to obtain the consensus among all participants in the decisional processes. So the canonical “top-down” approach has been replaced with a “bottom-up” approach where all stakeholders become decision makers themselves. The application of the aforementioned approach was studied for the Tiber River basin and has been applied to the Province of Perugia area. The study focused to the building of a spatial database of hydrological data and multipurpose water withdrawals, together with the setting of the evaluation model for the surface water resources. This model bases its algorithms on regionalization procedures of flow parameters. For the definition of the river condition, hydrological indices calculated from the hydrological database have been used, while for the existing withdrawals, an analysis procedure has been developed, that from the point of interest directly selected on the map, finds out the upstream basin and, by means of overlay procedures, identifies the upstream water uses and the total flow that could be extracted. The potential of the system and the technologies used are contained in a WEB platform that allows the analysis of the database of water uses/withdrawals on the cartography, and the comparison with the hydrogeological characteristics of the sub-basin examined. The purpose of this study is to provide software tools that can be used as a support in water resource evaluation and management policies at the basin scale.

  5. Groundwater quality assessment using geoelectrical and geochemical approaches: case study of Abi area, southeastern Nigeria

    Science.gov (United States)

    Ebong, Ebong D.; Akpan, Anthony E.; Emeka, Chimezie N.; Urang, Job G.

    2017-09-01

    The electrical resistivity technique which involved the Schlumberger depth sounding method and geochemical analyses of water samples collected from boreholes was used to investigate the suitability of groundwater aquifers in Abi for drinking and irrigation purposes. Fifty randomly located electrical resistivity data were collected, modeled, and interpreted after calibration with lithologic logs. Ten borehole water samples were collected and analysed to determine anion, cation concentrations and some physical and chemical parameters, such as water colour, temperature, total dissolved solids, and electrical conductivity. The results show that the lithostratigraphy of the study area is composed of sands, sandstones (fractured, consolidated and loosed), siltstones, shales (compacted and fractured) of the Asu River Group, Eze-Aku Formation which comprises the aquifer units, and the Nkporo Shale Formation. The aquifer conduits are known to be rich in silicate minerals, and the groundwater samples in some locations show a significant amount of Ca2+, Mg2+, and Na+. These cations balanced the consumption of H+ during the hydrolytic alteration of silicate minerals. The geochemical analysis of groundwater samples revealed dominant calcium-magnesium-carbonate-bicarbonate water facies. Irrigation water quality parameters, such as sodium absorption ratio, percentage of sodium, and permeability index, were calculated based on the physico-chemical analyses. The groundwater quality was observed to be influenced by the interaction of some geologic processes but was classified to be good to excellent, indicating its suitability for domestic and irrigation purposes.

  6. Product development strategy with quality function deployment approach: A case study in automotive battery

    Directory of Open Access Journals (Sweden)

    Heru Darmawan

    2017-12-01

    Full Text Available Customer satisfaction is one of the main factors in determining the competitiveness of every industry. Along with the technological advances, it will impact on the increasingly intense competition in the business of providing great opportunities to the consumer to find a quality product at competi-tive rates. The purpose of this study is to develop the quality of automotive battery products that meet consumer needs by using Quality Function Deployment (QFD method. The application is then analyzed and its results produced a proposal for product development according to the weight and priority development on product attributes that are considered important by customers. There are two main priorities that are most desired by customers, among others for improving the quality of products maintenance free battery in automotive battery industry with quality function deployment according to consumers. Consumers need a car battery with a good durability and great performance, low price, and environment friendly features, which can be achieved by using absorbent glass mat and expanded machine technology. Based on relative weight in House of Quality, Ab-sorbent Glass Mat receives the highest percentage of technical priority that is equal to 31% whereas technology expanded gets the second highest percentage of technical priority that is equal to 19%. It means that both technologies are more important to develop this product. Therefore, the maintenance free battery products are expected to be attractive for consumers and extensive marketing.

  7. Cross Innovation approach and the creative industries: a case study in the city of Lisbon, Portugal

    Directory of Open Access Journals (Sweden)

    Janaina Mendes Oliveira

    2016-04-01

    Full Text Available Given the cultural diversity of Europe, and the inextricable link between culture and creativity, creative industries also represent a great asset and a source of global competitive advantage. In this regard the EU launched the project Cross Innovation, aimed at identifying and sharing innovative experiences among the participating cities, and more specifically seeking to identify how the creative industries can interact with other industries in other sectors. This project was taken part by 11 European cities such as Amsterdam, Berlin, Birmingham, Stockholm, Linz, Lisbon, Pilsen, Vilnius, Warsaw, Rome and Tallinn. The purpose of this article is to describe the process performed in Europe and show that this can be used by other cities and even other regions to leverage the innovation process using the potential of the creative industry. It was utilized a documentary research on the project (reports, websites, documents submitted by respondents and there was performed a field study, with personal interviews with those responsible for the agencies involved in the project (Town Hall, University of Lisbon, companies, including others in one of the participant cities: the city of Lisbon, in Portugal. When researching the results of this project, specifically in the city of Lisbon, it is seen that there was learning in the sense of how the city can arrange a mediation policy from this process of rapprochement between the sectors of the economy of a region and Creative Industries, and the results in terms of knowledge generation are visible.

  8. Use of molecular approaches in hydrogeological studies: the case of carbonate aquifers in southern Italy

    Science.gov (United States)

    Bucci, Antonio; Petrella, Emma; Celico, Fulvio; Naclerio, Gino

    2017-06-01

    Waterborne pathogens represent a significant health risk in both developed and developing countries with sensitive sub-populations including children, the elderly, neonates, and immune-compromised people, who are particularly susceptible to enteric infections. Annually, approximately 1.8 billion people utilize a faecally contaminated water source, and waterborne diseases are resulting in up to 2.1 million human mortalities globally. Although groundwater has traditionally been considered less susceptible to contamination by enteric pathogens than surface water due to natural attenuation by overlying strata, the degree of microbial removal attributable to soils and aquifers can vary significantly depending on several factors. Thus, accurate assessment of the variable presence and concentration of microbial contaminants, and the relative importance of potentially causative factors affecting contaminant ingress, is critical in order to develop effective source (well) and resource (aquifer) protection strategies. "Traditional" and molecular microbiological study designs, when coupled with hydrogeological, hydrochemical, isotopic, and geophysical methods, have proven useful for analysis of numerous aspects of subsurface microbial dynamics. Accordingly, this overview paper presents the principal microbial techniques currently being employed (1) to predict and identify sources of faecal contamination in groundwater, (2) to elucidate the dynamics of contaminant migration, and (3) to refine knowledge about the hydrogeological characteristics and behaviours of aquifer systems affected by microbial contamination with an emphasis on carbonate aquifers, which represent an important global water supply. Previous investigations carried out in carbonate aquifers in southern Italy are discussed.

  9. A global approach to a transport system for radioactive waste-case study: radioactive drugs

    International Nuclear Information System (INIS)

    Brenot, J.; Gilles, P.; Vinarnick, L.

    1986-01-01

    For the year 1984 in France: radionuclides in unsealed sources, used in medical circles represent 4812 Ci (4812 x 37 GBq) of which 80% for Technetium 99 m alone. The market for these products has expanded greatly in fifteen years, by at least a factor of 6. the parcels are in the number of at least 200 000 of which 120 000 parcels are A labelled containing radiopharmaceutical preparations administered in vivo and radiochemical preparations used in vitro or in research. the users are few in number, 375 in all, of whom 127 are Departments of Nuclear Medicine who are the principal users; deliveries are very regular and are made along some large axes. transport accidents are extremely rare. the dosimetric data of workers are of a quality and equivalent of the collective dose for workers is in the order of 0.42 h.Sv; furthermore this equivalent of the collective dose has been recognisably the same for 15 years despite the increases in personnel and production; within the present framework of regulations concerning transport of the parcels, radioprotection of workers depends on the ethics of the suppliers. The drivers, who transport radioactive parcels only are regularly exposed to more than 10 mSv per year and the study of this group of workers should be a priority. The distribution of the doses received by packers in the large transit centres is not known. The equivalent of the collective public dose, due to the transport of these unsealed sources for medical use must be between 0.01 h.Sv and 0.1 h.Sv

  10. Empirical Analysis of the Financial Behavior of Investors with Brand Approach (Case Study: Tehran Stock Exchange

    Directory of Open Access Journals (Sweden)

    Asgarnezhad Nouri Bagher

    2017-03-01

    Full Text Available Behavioral science in the field of finance and investment is among new topics raised in recent years. The relationship between financial sciences and other fields of social sciences such as financial psychology has caused researchers to do many researches regarding the behavior of investors in the financial markets and their reactions to different situations. Based on the theories of financial behavior, shareholders' decision to buy and sell stocks is under the influence of internal and external psychological factors. Through designing and experimental testing of the model of investors' financial behavior in the Tehran Stock Exchange with an emphasis on brand, this study was an attempt to investigate the influence of these factors. To this end, financial, psychological and social factors were considered as the most important external factors influencing the behavior of investors and, considering the mediating role of brand awareness, their impact on perceived risk and perceived return as well as investment intention was tested. The research population consisted of all individual investors in the Tehran Stock Exchange. In order to determine the sample size, considering unlimited population, Cochran formula was used and hence the sample size was determined to be 145. For data collection, standard questionnaire was used. Confirmatory factor analysis was used to test the reliability of the questionnaire and the research hypotheses were tested using path analysis. The results showed that psychological factors have a positive impact on perceived risk and returns. Financial factors had a positive impact on perceived risk but no impact on perceived return. The impact of social factors on perceived risk and perceived return was not confirmed. Moreover, the results showed that brand awareness has a moderating role in the relationship between social factors and perceived risk and return. However, its moderating role was not confirmed in the relationship

  11. Scaling up paediatric HIV care with an integrated, family-centred approach: an observational case study from Uganda.

    Directory of Open Access Journals (Sweden)

    Emmanuel Luyirika

    Full Text Available Family-centred HIV care models have emerged as an approach to better target children and their caregivers for HIV testing and care, and further provide integrated health services for the family unit's range of care needs. While there is significant international interest in family-centred approaches, there is a dearth of research on operational experiences in implementation and scale-up. Our retrospective case study examined best practices and enabling factors during scale-up of family-centred care in ten health facilities and ten community clinics supported by a non-governmental organization, Mildmay, in Central Uganda. Methods included key informant interviews with programme management and families, and a desk review of hospital management information systems (HMIS uptake data. In the 84 months following the scale-up of the family-centred approach in HIV care, Mildmay experienced a 50-fold increase of family units registered in HIV care, a 40-fold increase of children enrolled in HIV care, and nearly universal coverage of paediatric cotrimoxazole prophylaxis. The Mildmay experience emphasizes the importance of streamlining care to maximize paediatric capture. This includes integrated service provision, incentivizing care-seeking as a family, creating child-friendly service environments, and minimizing missed paediatric testing opportunities by institutionalizing early infant diagnosis and provider-initiated testing and counselling. Task-shifting towards nurse-led clinics with community outreach support enabled rapid scale-up, as did an active management structure that allowed for real-time review and corrective action. The Mildmay experience suggests that family-centred approaches are operationally feasible, produce strong coverage outcomes, and can be well-managed during rapid scale-up.

  12. Narrative pedagogy with evolving case study--A transformative approach to gerontic nursing practice for undergraduate nursing students.

    Science.gov (United States)

    Laver, Shaorn; Croxon, Lyn

    2015-09-01

    Engaging nursing students in the complexities of care across community, acute, rehabilitation and residential aged care settings is challenging. Equally challenging is conceptualising and promoting diverse and comprehensive health assessments across care settings that reflect clinical reality, inform clinical decision making, traverse theory and practice, and transform clinical practice knowledge. This article describes the use of narrative and evolving case study as a teaching-learning tool utilised by the authors in a third year undergraduate gerontic nursing subject in a pre-service nursing degree at a rural university. Principles of transformative learning and strengths based nursing were drawn upon in the development of the case study. The aim of the approach was to draw on embedded knowledge and the experiences of students and academics from assorted practice settings to facilitate understanding of the lived experiences of an older community dwelling couple. Using social learning strategies students were encouraged to analyse and think critically and creatively about the situations they were presented with. They identified possible solutions that would be acceptable to the couple. Building on the older couple's strengths, achievements and personal social capital, the aim was to develop a positive paradigm for health and the way older people are viewed by nursing students. Copyright © 2015 Elsevier Ltd. All rights reserved.

  13. Facilitating progress in health behaviour theory development and modification: the reasoned action approach as a case study.

    Science.gov (United States)

    Head, Katharine J; Noar, Seth M

    2014-01-01

    This paper explores the question: what are barriers to health behaviour theory development and modification, and what potential solutions can be proposed? Using the reasoned action approach (RAA) as a case study, four areas of theory development were examined: (1) the theoretical domain of a theory; (2) tension between generalisability and utility, (3) criteria for adding/removing variables in a theory, and (4) organisational tracking of theoretical developments and formal changes to theory. Based on a discussion of these four issues, recommendations for theory development are presented, including: (1) the theoretical domain for theories such as RAA should be clarified; (2) when there is tension between generalisability and utility, utility should be given preference given the applied nature of the health behaviour field; (3) variables should be formally removed/amended/added to a theory based on their performance across multiple studies and (4) organisations and researchers with a stake in particular health areas may be best suited for tracking the literature on behaviour-specific theories and making refinements to theory, based on a consensus approach. Overall, enhancing research in this area can provide important insights for more accurately understanding health behaviours and thus producing work that leads to more effective health behaviour change interventions.

  14. The application of the triple bottom line approach to sustainability assessment: The case study of the UK automotive supply chain

    Energy Technology Data Exchange (ETDEWEB)

    Azevedo, S.; Barros, M.

    2017-07-01

    Purpose: The objective of this paper is to assess the level of sustainability of the UK automotive supply chain considering simultaneously the three dimensions of sustainability (economic, social and environmental) representing the Triple Bottom Line (TBL) approach. Design/methodology/approach: The assessment of the automotive SC’ sustainability is based on the framework proposed by Salvado, Azevedo, Matias and Ferreira (2011) and uses the Simple Additive Weighting (SAW) method to aggregate economic, environmental and social indicators into a unique index. A case study on the UK automotive industry is used and the data do perform this study is collected from the sustainability reports of the UK’ automotive companies. Findings and Originality/value: The proposed framework represents an important benchmarking tool, offering managers the possibility for assessing the sustainability behaviour of its supply chain and compare it with other supply chains. Once identified the dimension of sustainability where the company or the supply chain is worst performer managers can work closer to their supply chain’ partners in order to improve the performance of those dimension of sustainability. Research limitations/implications: One limitation of the suggested approach is related to the ambiguity of the sustainability’ indicators selection and the definition of weights for each sustainability dimension. Practical implications: The assessment of the SC sustainability by using the suggested framework to compute a SC sustainability index offers managers an opportunity for assessing the level of sustainability of each individual company and the corresponding SC in a very easy way. It also represents an opportunity for improving company performance. In this way managers can use the information on the sustainability index to help adjust their company's behaviour and improve their economic, social and environmental performance. Originality/value: The proposed framework

  15. The application of the triple bottom line approach to sustainability assessment: The case study of the UK automotive supply chain

    Directory of Open Access Journals (Sweden)

    Susana Azevedo

    2017-05-01

    Full Text Available Purpose: The objective of this paper is to assess the level of sustainability of the UK automotive supply chain considering simultaneously the three dimensions of sustainability (economic, social and environmental representing the Triple Bottom Line (TBL approach. Design/methodology/approach: The assessment of the automotive SC’ sustainability is based on the framework proposed by Salvado, Azevedo, Matias and Ferreira (2011 and uses the Simple Additive Weighting (SAW method to aggregate economic, environmental and social indicators into a unique index. A case study on the UK automotive industry is used and the data do perform this study is collected from the sustainability reports of the UK’ automotive companies. Findings and Originality/value: The proposed framework represents an important benchmarking tool, offering managers the possibility for assessing the sustainability behaviour of its supply chain and compare it with other supply chains. Once identified the dimension of sustainability where the company or the supply chain is worst performer managers can work closer to their supply chain’ partners in order to improve the performance of those dimension of sustainability. Research limitations/implications: One limitation of the suggested approach is related to the ambiguity of the sustainability’ indicators selection and the definition of weights for each sustainability dimension. Practical implications: The assessment of the SC sustainability by using the suggested framework to compute a SC sustainability index offers managers an opportunity for assessing the level of sustainability of each individual company and the corresponding SC in a very easy way. It also represents an opportunity for improving company performance. In this way managers can use the information on the sustainability index to help adjust their company's behaviour and improve their economic, social and environmental performance. Originality/value: The proposed

  16. Assessment of management approaches in a public water utility: A case study of the Namibia water corporation (NAMWATER)

    Science.gov (United States)

    Ndokosho, Johnson; Hoko, Zvikomborero; Makurira, Hodson

    More than 90% of urban water supply and sanitation services in developing countries are provided by public organizations. However, public provision of services has been inherently inefficient. As a result a number of initiatives have emerged in recent years with a common goal to improve service delivery. In Namibia, the water sector reform resulted in the creation of a public utility called the Namibia Water Corporation (NAMWATER) which is responsible for bulk water supply countrywide. Since its inception in 1998, NAMWATER has been experiencing poor financial performance. This paper presents the findings of a case study that compared the management approaches of NAMWATER to the New Public Management (NPM) paradigm. The focus of the NPM approach is for the public water sector to mirror private sector methods of management so that public utilities can accrue the benefits of effectiveness, efficiency and flexibility often associated with private sector. The study tools used were a combination of literature review, interviews and questionnaires. It was found out that NAMWATER has a high degree of autonomy in its operations, albeit government approved tariffs and sourcing of external financing. The utility reports to government annually to account for results. The utility embraces a notion of good corporate culture and adheres to sound management practices. NAMWATER demonstrated a strong market-orientation indicated by the outsourcing of non-core functions but benchmarking was poorly done. NAMWATER’s customer-orientation is poor as evidenced by the lack of customer care facilities. NAMWATER’s senior management delegated operational authority to lower management to facilitate flexibility and eliminate bottlenecks. The lower management is in turn held accountable for performance by the senior management. There are no robust methods of ensuring sufficient accountability indicated by absence of performance contracts or service level agreements. It was concluded that

  17. The application of the triple bottom line approach to sustainability assessment: The case study of the UK automotive supply chain

    International Nuclear Information System (INIS)

    Azevedo, S.; Barros, M.

    2017-01-01

    Purpose: The objective of this paper is to assess the level of sustainability of the UK automotive supply chain considering simultaneously the three dimensions of sustainability (economic, social and environmental) representing the Triple Bottom Line (TBL) approach. Design/methodology/approach: The assessment of the automotive SC’ sustainability is based on the framework proposed by Salvado, Azevedo, Matias and Ferreira (2011) and uses the Simple Additive Weighting (SAW) method to aggregate economic, environmental and social indicators into a unique index. A case study on the UK automotive industry is used and the data do perform this study is collected from the sustainability reports of the UK’ automotive companies. Findings and Originality/value: The proposed framework represents an important benchmarking tool, offering managers the possibility for assessing the sustainability behaviour of its supply chain and compare it with other supply chains. Once identified the dimension of sustainability where the company or the supply chain is worst performer managers can work closer to their supply chain’ partners in order to improve the performance of those dimension of sustainability. Research limitations/implications: One limitation of the suggested approach is related to the ambiguity of the sustainability’ indicators selection and the definition of weights for each sustainability dimension. Practical implications: The assessment of the SC sustainability by using the suggested framework to compute a SC sustainability index offers managers an opportunity for assessing the level of sustainability of each individual company and the corresponding SC in a very easy way. It also represents an opportunity for improving company performance. In this way managers can use the information on the sustainability index to help adjust their company's behaviour and improve their economic, social and environmental performance. Originality/value: The proposed framework

  18. Novel surgical approach for axillary hidradenitis suppurativa using a bilayer dermal regeneration template: a retrospective case study.

    Science.gov (United States)

    Gonzaga, Teresa A; Endorf, Frederick W; Mohr, William J; Ahrenholz, David H

    2013-01-01

    Hidradenitis suppurativa (HS) is a chronic debilitating disease of apocrine gland-bearing skin characterized by recurrent abscesses with subsequent rupture, scarring, and draining sinus tracts, most frequently affecting the axillary, inguinal, and anogenital regions. Conservative and temporizing treatment methods have been used to treat mild to moderate disease, but wide local excision of affected tissue is necessary for advanced disease. This creates a large soft tissue defect for which there is no consensus for reconstruction. Recovery is hampered by disease recurrence, tissue necrosis, and reoperation. The authors have described in this case study an alternative surgical approach to treat severe HS. All surgical procedures were performed by dedicated burn surgeons at a regional burn center using a two-stage surgical approach. The first stage is a wide local excision of all affected axillary tissue with immediate placement of a bilayer dermal regeneration template to cover the defect. This is secured with a negative pressure wound therapy dressing. The second stage uses a thin split thickness skin graft to close the wound. Results of four patients are presented. There were no recurrences of HS. Two patients required reoperations to address granulation tissue overgrowth and small areas of autograft loss. One patient experienced skin substitute loss as a result of infection. Inadequate excision of HS is the leading cause of disease recurrence. Using a bilayer dermal regeneration template with subsequent skin graft, surgeons can be aggressive in their excision of HS, achieving satisfactory functional and cosmetic results and minimizing axillary recurrence.

  19. Traditional and Alternative Approaches to the Method of Situational Analysis in Russia: Evidence from the Case Study “Istanbul in the Life and Works of Martiros Saryan”

    Directory of Open Access Journals (Sweden)

    Olga Fedotova

    2017-09-01

    Full Text Available The article analyzes the transformation of the methodological toolkit for teaching humanities and sciences in the Russian Federation. The method of case study, being widely spread in modern higher education research, is used as an example to illustrate the attempts to implement the best practices of foreign educational technology into tertiary academic process in Russia. The author provides some historical aspects of introducing case studies in modern teaching practice. The article features peculiarities of the Soviet approach to the structure of cases. Content analysis helps identify similarities and differences in Soviet/post-Soviet approaches to case study construction and brings into focus the problem points which reveal misinterpretation and/or misuse of didactic materials designated as cases. The approach suggested in the article implies presenting the content of a case study as a collection of documents related to a certain topic. The case study "Istanbul in the life and work of the artist Martiros Saryan" demonstrates that a case can have invariable and variable parts to reflect the specificity of the didactic task within the discipline. Such approach is expected to support students’ cognitive activity, develop creativity in searching additional sources and missing materials, improve efficiency of students’ autonomous work on solving complex problem solution.

  20. Risk management in medical product development process using traditional FMEA and fuzzy linguistic approach: a case study

    Science.gov (United States)

    Kirkire, Milind Shrikant; Rane, Santosh B.; Jadhav, Jagdish Rajaram

    2015-12-01

    Medical product development (MPD) process is highly multidisciplinary in nature, which increases the complexity and the associated risks. Managing the risks during MPD process is very crucial. The objective of this research is to explore risks during MPD in a dental product manufacturing company and propose a model for risk mitigation during MPD process to minimize failure events. A case study approach is employed. The existing MPD process is mapped with five phases of the customized phase gate process. The activities during each phase of development and risks associated with each activity are identified and categorized based on the source of occurrence. The risks are analyzed using traditional Failure mode and effect analysis (FMEA) and fuzzy FMEA. The results of two methods when compared show that fuzzy approach avoids the duplication of RPNs and helps more to convert cognition of experts into information to get values of risk factors. The critical, moderate, low level and negligible risks are identified based on criticality; risk treatments and mitigation model are proposed. During initial phases of MPD, the risks are less severe, but as the process progresses the severity of risks goes on increasing. The MPD process should be critically designed and simulated to minimize the number of risk events and their severity. To successfully develop the products/devices within the manufacturing companies, the process risk management is very essential. A systematic approach to manage risks during MPD process will lead to the development of medical products with expected quality and reliability. This is the first research of its kind having focus on MPD process risks and its management. The methodology adopted in this paper will help the developers, managers and researchers to have a competitive edge over the other companies by managing the risks during the development process.

  1. Can we assess intra-basin tradeoffs using approaches derived from Global Hydrological Modeling? Case studies from Asia

    Science.gov (United States)

    Shaad, K.; Vollmer, D.; Regan, H.; Souter, N. J.; Andelman, S.; Chen, X.; Yanjun, D.

    2016-12-01

    Advances in GHMs, LSMs and related River-routing algorithms provide a consistent and coherent approach to link global hydrological processes and remotely-sensed satellite data to regional-scales. While progress has been made in characterizing regulating mechanisms on the rivers and LULC changes' impacts to basin hydrology, gaps remain in making these global tools relevant to local basin management. Here we show how adapting the approaches developed for the global models while allowing local input on regulating mechanism/land-cover changes, can work around the constraint of gaps in local data availability and technical capability, leading to basin-relevant insights in the context of integrated water resource management. Within the case study sites of Dongjiang (China) and Lower Mekong, a semi-distributed `network of network' framework for assessing impacts of tradeoffs within a basin is developed, composed of (a) a simple hydrological and routing model using HydroBASIN[1] sub-basin network as underlying grid; with for each sub-basin, (b) a "relations" network for derivation of ecosystem services, based on hydrologic and ecosystem processes as well as local demand. With this framework, we validate the impact of the local inputs by using the evaluation approach proposed by [2], based on ability of the model to represent the observed covariance structures between forcings and outflow. We then apply this semi-distributed framework to explore potential tradeoffs using development scenarios (e.g., urban expansion, water reallocation). Advances in the ability to swiftly link comprehensive global-scale hydrological information to local-scale issues may improve our capability to anticipate and respond to freshwater resource availability and management challenges. [1] Lehner, B., & Grill, G. (2013). Hydrological Processes, 27(15), 2171-2186. [2] Vogel, R. M., & Sankarasubramanian, A. (2003). Water Resources Research, 39(10).

  2. A Scientific Approach to Cultural Heritage Preservation: A Case Study of Vandalistic Acts on Important Roman Mosaics

    Science.gov (United States)

    Ciliberto, Enrico; Spoto, Giuseppe; Matteini, Mauro; Puglisi, Concetto

    1998-10-01

    As an example of the way in which a scientific study can help the restorer in the restoration of important artistic works, the authors report the case study of vandalistic acts on important Roman mosaics. On the night of September 29, 1995, some unknown vandals poured dark brown paint over several of the most beautiful and important mosaics of the Villa del Casale (Piazza Armerina, Italy). The villa, consisting of an extensive network of rooms, galleries, courtyards, and baths, contains some of the largest and most beautiful mosaics surviving from Roman times. Chemical investigations were performed in order to draw up a rapid restoration plan aimed at identifying the substances used and proposing a correct restoration procedure. A multitechnique, analytical approach was used for these investigations because of the highly complex heterogeneity of the materials studied. The results showed that toluidine red was present in the paint as pigment and that the vehicle was made up of a mixture of alkyd resins, together with styrenated compounds and unsaturated long chain-containing oils. Moreover, besides compounds like calcium carbonate, barium sulfate, and aluminum oxide, silver-containing compounds were present in the paint. All of these observations allowed the authors to propose the removal method to be adopted that achieved the restoration of the mosaics.

  3. Effectiveness of constructivist approach on students achievement in mathematics: A case study at primary school in Kuantan, Pahang

    Science.gov (United States)

    Samsudin, Syafiza Saila; Ujang, Suriyati; Sahlan, Nor Fasiha

    2016-06-01

    This study was conducted on students in Year 3 at Sekolah Kebangsaan Air Putih, Kuantan. The study used a constructivism approach in simplest fraction topic in Mathematics. Students were divided into 2 groups; the control group and the experimental group. Experimental group was taught using Constructivist Approach whereas the control group student was taught using the Traditional Approach. This study aimed to determine the effectiveness of constructivist learning approach the topic of Simplest Fraction. It also aimed to compare the student's achievement between the constructivist approach and traditional approach. This study used the instrument in pre-test, post-test, questionnaires and observation. The data were analyzed with SPSS 15.0 for window. The finding shows there is a significant difference between the pre-test and post-test for experimental group after using constructivism approach in learning process. The mean scores (76.39) of the post-test is higher than the mean scores (60.28) for pre-test. It is proved that constructivist approach is more efficient and suitable for teaching and learning in simplest fraction topic in the classroom compared to traditional approaches. The findings also showed interest and the positive perception of this approach.

  4. The Case Study Technologies as the Means of Competency Building Approach Realization in Higher Education of Russia

    Science.gov (United States)

    Abdrafikova, Albina R.; Konopatskaya, Ekaterina A.

    2014-01-01

    The problem of increasing education efficiency in Russian high school under the condition of well-organized educational process with using "Case-study" technology is considered in the article. The article is devoted to the methodology of case study, and especially its implementation in Kazan Federal University, the Institute of Philology…

  5. Application of Case-Task Based Approach in Business English Teaching--A Case Study of the Marketing Course in SEIB of GDUFS

    Science.gov (United States)

    Guiyu, Dai; Yi, Cai

    2017-01-01

    Business English Teaching aims at cultivating students' ability to analyze and solve problems, improving students' comprehensive language competence and honing their business practical skills. Adhering to the principle of learning by doing and learning by teaching others, Case-Task Based Approach emphasizes students' ability of language use in…

  6. Design of an environmental site assessment template for open radioactive site contamination : a radioecological risk approach and case study

    International Nuclear Information System (INIS)

    Nguyen, T.

    2004-01-01

    To reduce redundancy, cost, and time, while at the same time ultimately increasing the effectiveness of the radioactive risk management process, a logical framework incorporating risk assessments (human cancer and environmental risks) into the environmental site assessment process was designed for radioactive open site contamination. Risk-based corrective action is becoming an increasingly more acceptable approach for the remediation of contaminated sites. In the past, cleanup goals were usually established without any regard to the risk involved, by mandating remediation goals based solely on maximum contamination levels. Now, a multi-stage environmental site assessment template has been developed on a radioecological approach. The template gives a framework for making environmentally sound decisions based on relevant regulations and guidelines. The first stage involves the comparison of the background screening activity level to the regulated activity level, the second stage involves the use of site-specific information to determine the risk involved with the contamination, and the third stage provides a remediation decision matrix based on results from the first two stages. This environmental site assessment template is unique because it incorporates the modified Canadian National Classification System for radioactive contaminated sites and two different types of risk assessments (human cancer risks and the newly designed ecological risk) into the decision making process. The template was used to assess a radiologically contaminated site at the Canadian Forces Base at Suffield (Alberta) as a case study, and it reaffirms the Department of National Defence's action as appropriate. This particular site is a Class 3, has an overall insignificant human cancer risk ( -6 ) and a low environmental risk, and conforms to all regulated guidelines. Currently, it is restricted and should be left as is, provided that the subsurface is not disturbed. (author)

  7. The Port of Trieste (Northern Adriatic Sea—A Case Study of the “Ecosystem Approach to Management”

    Directory of Open Access Journals (Sweden)

    Tamara Cibic

    2017-10-01

    excluded from the SIN. However, further sampling is required along a finer sampling grid in the less contaminated side of the port in order to confirm these first results. Our work is one of the first case studies where such an ecosystem approach has been applied to a port area, in order to provide practical support to decision-makers involved in the spatial planning of harbor zones.

  8. A multi-disciplinary approach to study coastal complex landslides: the case of Torino di Sangro (Central Italy)

    Science.gov (United States)

    Sciarra, Marco; Carabba, Luigi; Urbano, Tullio; Calista, Monia

    2016-04-01

    This work illustrates the studies carried out on a complex landslide phenomenon between the Sangro and Osento River's mouths, near Torino di Sangro village in Southern Abruzzo Region (Italy). Historical activity of this landslide is well-documented since 1916; the activation/reactivation of the movements caused several interruptions of a national railway and the damage of few houses. The Torino di Sangro case study can be regarded as representative of many large landslides distributed along the central Adriatic coast (e.g., Ancona, Ortona, Vasto and Petacciato Landslides) that affect densely populated urban areas with a large amount of man-made infrastructure. The main controlling factors of these large and deep-seated landslides are still debated. From the geological and geomorphological viewpoint, the central Adriatic coast is characterized by a low-relief landscape (mesa) carved on clay-sandstone-conglomerate bedrock belonging to the Upper Pliocene - Lower Pleistocene marine deposits and locally to the Middle Pleistocene marine to continental transitional deposits. This high coast is widely affected by slope instability (rock falls, rotational, complex and shallow landslides) on both active and inactive sea cliffs, the first being mainly affected by wave-cut erosion and the latter influenced by heavy rainfall and changes of pore pressure. The main landslide has the typical characteristics of a deep-seated gravitation deformation. The landslide study was based on a multidisciplinary approach including: 1) definition and GIS mapping of geology and geomorphology factors (slope, aspect, topographic curvature, bedrock lithology, near-surface deposits, deposit thickness and land use), by means of DTM processing, multi-temporal analysis, and large-scale geomorphological field survey; 2) monitoring system in the landslide; 3) application of empiric models for the analysis of unstable sandstone-conglomerate escarpments; 4) slope stability analysis performed using a

  9. Case Study: Writing a Journal Case Study

    Science.gov (United States)

    Prud'homme-Genereux, Annie

    2016-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue describes incorporating a journal article into the classroom by first converting it into a case study.

  10. Exploring Content Management Issues in Air Force On-Line Communities of Practice: A Multiple Case Study Approach

    National Research Council Canada - National Science Library

    Jaime

    2004-01-01

    .... Addressing existing or potential content management issues will help do so. This multiple-case study research observed and interviewed managers and members of eight active CoPs busted by AFMC/DRW...

  11. Demonstration of statistical approaches to identify component's ageing by operational data analysis-A case study for the ageing PSA network

    International Nuclear Information System (INIS)

    Rodionov, Andrei; Atwood, Corwin L.; Kirchsteiger, Christian; Patrik, Milan

    2008-01-01

    The paper presents some results of a case study on 'Demonstration of statistical approaches to identify the component's ageing by operational data analysis', which was done in the frame of the EC JRC Ageing PSA Network. Several techniques: visual evaluation, nonparametric and parametric hypothesis tests, were proposed and applied in order to demonstrate the capacity, advantages and limitations of statistical approaches to identify the component's ageing by operational data analysis. Engineering considerations are out of the scope of the present study

  12. Adherence to the Dietary Approaches to Stop Hypertension-style diet in relation to glioma: a case-control study.

    Science.gov (United States)

    Benisi-Kohansal, Sanaz; Shayanfar, Mehdi; Mohammad-Shirazi, Minoo; Tabibi, Hadi; Sharifi, Giuve; Saneei, Parvane; Esmaillzadeh, Ahmad

    2016-03-28

    Data on the association of adherence to the Dietary Approaches to Stop Hypertension (DASH)-style and glioma are scarce. We aimed to examine the association between adherence to the DASH-style diet and glioma in Iranian adults. In this study, 128 pathologically confirmed cases of glioma were recruited from hospitals and 256 age- and sex-matched controls were enrolled from other wards of the hospital. Dietary intakes were assessed using a 126-item validated FFQ. Adherence to the DASH-style diet was followed considering the healthy and non-healthy foods emphasised in the DASH dietary pattern. After controlling for potential confounders, individuals with the greatest adherence to the DASH diet were 72 % less likely to have glioma compared with those with the lowest adherence (OR 0·28; 95 % CI 0·13, 0·57). Individuals with the highest consumption of fruits had lower odds for having glioma compared with those with the lowest intake (OR 0·31; 95 % CI 0·14, 0·68). A protective association was also observed between consumption of legumes and nuts and risk of glioma (OR 0·23; 95 % CI 0·10, 0·53). We found a significant positive association between red and processed meat (OR 2·60; 95 % CI 1·16, 5·81) and salt intakes (OR 2·87; 95 % CI 1·30, 6·34) and risk of glioma, after taking all potential confounders into account. Adherence to the DASH-style dietary pattern was inversely associated with glioma. In addition, some components of the DASH diet, including red meats and salt intakes, were positively associated with glioma. Consumption of nuts and legumes as well as fruits was inversely associated with glioma. Prospective cohort studies are required to confirm our findings.

  13. An integrated airborne laser scanning approach to forest management and cultural heritage issues: a case study at Porolissum, Romania

    Directory of Open Access Journals (Sweden)

    Anamaria Roman

    2017-07-01

    Full Text Available This paper explores the opportunities that arise where forest ecosystem management and cultural heritage monuments protection converge. The case study area for our analysis was the landscape surrounding the Moigrad-Porolissum Archaeological site. We emphasize that an Airborne Laser Scanning (ALS or LiDAR-Light Detection and Ranging approach to both forest management and cultural heritage conservation is an outstanding tool, assisting policy-makers and conservationists in decision making for integrated planning and management of the environment. LiDAR-derived surface models enabled a synoptic, never-seen-before view of the ancient Roman frontiers defensive systems while also revealing the present forest road network. The thorough and accurate road inventory data are very useful for updating and modifying forest base maps and registries and also for identifying the priority sectors for archaeological discharge. The ability to identify and determine optimal routes for forest management and to locate previously unmapped ancient archaeological remains aids in reducing costs and creating operational efficiencies as well as in complying with the legislation and avoiding infringements. The potential of LiDAR to demonstrate the long-term and comprehensive human impact on wooded areas is discussed. We identified a significant historical landscape change, consisting of a deforestation period, spanning over more than 160 years, during the Roman Period in Dacia (106-271 AD. The transdisciplinary analysis of the LiDAR data provides the base for combining knowledge from archaeology, forestry and environmental history in order to achieve a thorough analysis of the landscape changes and history. In the “nature versus culture” dichotomy, the landscape, outfield areas and forests are primarily perceived as nature, while in reality they are often heavily marked by human impact. LiDAR offers an efficient method for broadening our knowledge regarding the

  14. A strategic approach to selecting policy mechanisms for addressing coal mine methane emissions: A case study on Kazakhstan

    Energy Technology Data Exchange (ETDEWEB)

    Roshchanka, Volha; Evans, Meredydd; Ruiz, Felicia; Kholod, Nazar

    2017-12-01

    Coal production globally is projected to grow in the foreseeable future. Countries with heavy reliance on coal could reduce methane and other emissions through the capture and utilization of coal mine methane (CMM) in the short and medium term, while they pursue structural and long-term economic changes. Several countries have successfully implemented policies to promote CMM capture and utilization; however, some countries still struggle to implement projects. This paper outlines key factors to consider in adapting policies for CMM mitigation. The authors propose an approach for selecting adequate mechanisms for stimulating CMM mitigation that involves reviewing global best practices and categorizing them functionally either as mechanisms needed to improve the underlying conditions or as CMM-specific policies. It is important to understand local policy frameworks and to consider whether it is more feasible to improve underlying policy conditions or to provide targeted incentives as an interim measure. Using Kazakhstan as a case study, the authors demonstrate how policymakers could assess the overall policy framework to find the most promising options to facilitate CMM projects. Kazakhstan’s emissions from underground coal mines have been increasing both in total and per tonne of coal production, while overall production has been declining. CMM mitigation presents an opportunity for the country to reduce its greenhouse gas emissions in the near and medium term, while the government pursues sustainable development goals. Analysis shows that policymakers in Kazakhstan can leverage existing policies to stimulate utilization by extending feed-in tariffs to cover CMM and by developing working methodologies for companies to obtain emission reduction credits from CMM projects.

  15. USING THE BUSINESS ENGINEERING APPROACH IN THE DEVELOPMENT OF A STRATEGIC MANAGEMENT PROCESS FOR A LARGE CORPORATION: A CASE STUDY

    Directory of Open Access Journals (Sweden)

    C.M. Moll

    2012-01-01

    Full Text Available Most South African organisations were historically part of a closed competitive system with little global competition and a relatively stable economy (Manning: 18, Sunter: 32. Since the political transformation, the globalisation of the world economy, the decline of world economic fundamentals and specific challenges in the South African scenario such as GEAR and employment equity, the whole playingfield has changed. With these changes, new challenges ', appear. A significant challenge for organisations within this scenario is to think, plan and manage strategically. In order to do so, the organisation must understand its relationship with its environment and establish innovative new strategies to manipulate; interact with; and ultimately survive in the environment. The legacy of the past has, in many organisations, implanted an operational short-term focus because the planning horizon was stable. It was sufficient to construct annual plans rather than strategies. These plans were typically internally focused rather than driven by the external environment. Strategic planning in this environment tended to be a form of team building through which the various members of the organisation 's management team discussed and documented the problems of the day. A case study is presented of the development of a strategic management process for a large South African Mining company. The authors believe that the approach is a new and different way of addressing a problem that exists in many organisations - the establishment of a process of strategic thinking, whilst at the same time ensuring that a formal process of strategic planning is followed in order to prompt the management of the organisation for strategic action. The lessons that were drawn from this process are applicable to a larger audience due to the homogenous nature of the management style of a large number of South African organisations.

  16. Lead substances selection using GHS approach for the classification of mixtures: Case study of painting in the work environment.

    Science.gov (United States)

    Kaneko, Kazuhiro; Ishii, Satoko; Hosohara, Sachio; Hirata, Tsuyoshi; Masuda, Motoshi; Murasawa, Kaori; Yamada, Airi; Tadokoro, Takaaki; Hanzawa, Masahiko

    2017-08-01

    We developed a lead substances selection approach based on the concept of mixture classification of UN GHS for the purpose of efficient risk assessment of mixtures consisting of multiple components. Lead substances selection methods are being actively developed in Europe, but these methods are predicated on the regulations and information sources available within Europe and are therefore not readily applicable to countries outside Europe. In this study, the features of the GHS-based approach and the risk assessment results for outdoor painting work as a specific utilization example of the GHS-based approach were described. Comparison with the DPD + method and the CCA method proposed in Europe revealed that the GHS-based approach resulted in the selection of the safest lead substances. The GHS method, like the DPD + method, is a classification-based approach. We believe that a classification-based approach based on the GHS method can be an appropriate tool to efficiently implement risk assessment of mixtures for countries outside Europe. Some tools for business operators to conduct the management of chemicals using the GHS classification have been established in Japan. We plan to propose the GHS-based approach as a standardized assessment tool. Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.

  17. How African-American Elementary Students in High-Poverty Schools Experience Creative Expression: A Case Study Approach

    Science.gov (United States)

    Willis, Belinda F.

    2016-01-01

    Literature that addresses how the arts enhance student learning through creative expression is minimal. This is especially true for African-American elementary students from high-poverty backgrounds. The purpose of this study was to employ a case study design to explore how African-American elementary students in high-poverty schools experience…

  18. A model for personnel selection with a data mining approach: A case study in a commercial bank

    Directory of Open Access Journals (Sweden)

    Adel Azar

    2013-04-01

    Full Text Available Orientation: The success or failure of an organisation has a direct relationship with how its human resources are employed and retained. Research purpose: In this paper, a decision-making tool is provided for managers to use during the recruitment process. The effective factors in employees’ performance will be identified by discovering covert patterns of the relationship between employees’ test scores and their performance at work. Motivation for the study: Large amounts of information and data on entrance evaluations and processes have been kept in organisations. There is a need to discover the pattern in the relationship between employee’s test scores and their performance at work as a tool for use during the recruitment process.? Research design, approach and method: The data mining technique that was used in this project serves as the decision tree. Rules derivation was accomplished by the Quick Unbiased and Efficient Statistical Tree(QUEST, Chi-squared Automatic Interaction Detector (CHAID,C5.0 and Classification And Regression Tree  (CART algorithm. The objective and the appropriate algorithm were determined based on seemingly ‘irrelevant’ components, which the Commerce Bank Human Resources management’s experts describe. Main finding: It was found that the ‘performance assessment’ variable was not considered as the objective. Also, it was concluded that out of 26 effective variables only five variables, such as province of employment, education level, exam score, interview score and work experience, had the most effect on the ‘promotion score’ target. Practical/managerial implication: The database and personnel information of the Commerce Bank of Iran (in 2005 and 2006 was studied and analysed as a case study in order to identify the labour factors that are effective in job performance. Appropriate and scientific employment of staff that were selected from the entrance exams of companies and

  19. A model for personnel selection with a data mining approach: A case study in a commercial bank

    Directory of Open Access Journals (Sweden)

    Adel Azar

    2013-01-01

    Full Text Available Orientation: The success or failure of an organisation has a direct relationship with how its human resources are employed and retained.Research purpose: In this paper, a decision-making tool is provided for managers to use during the recruitment process. The effective factors in employees’ performance will be identified by discovering covert patterns of the relationship between employees’ test scores and their performance at work.Motivation for the study: Large amounts of information and data on entrance evaluations and processes have been kept in organisations. There is a need to discover the pattern in the relationship between employee’s test scores and their performance at work as a tool for use during the recruitment process.?Research design, approach and method: The data mining technique that was used in this project serves as the decision tree. Rules derivation was accomplished by the Quick Unbiased and Efficient Statistical Tree(QUEST, Chi-squared Automatic Interaction Detector (CHAID,C5.0 and Classification And Regression Tree  (CART algorithm. The objective and the appropriate algorithm were determined based on seemingly ‘irrelevant’ components, which the Commerce Bank Human Resources management’s experts describe.Main finding: It was found that the ‘performance assessment’ variable was not considered as the objective. Also, it was concluded that out of 26 effective variables only five variables, such as province of employment, education level, exam score, interview score and work experience, had the most effect on the ‘promotion score’ target.Practical/managerial implication: The database and personnel information of the Commerce Bank of Iran (in 2005 and 2006 was studied and analysed as a case study in order to identify the labour factors that are effective in job performance. Appropriate and scientific employment of staff that were selected from the entrance exams of companies and organisations

  20. Creating patient value in glaucoma care: applying quality costing and care delivery value chain approaches--a five-year case study in the Rotterdam Eye Hospital

    NARCIS (Netherlands)

    de Korne, Dirk F.; Sol, Kees; Custers, Thomas; van Sprundel, Esther; van Ineveld, B. Martin; Lemij, Hans G.; Klazinga, Niek S.

    2009-01-01

    PURPOSE: The purpose of this paper is to explore in a specific hospital care process the applicability in practice of the theories of quality costing and value chains. DESIGN/METHODOLOGY/APPROACH: In a retrospective case study an in-depth evaluation of the use of a quality cost model (QCM) and the

  1. A "Great Roads" Approach to Teaching Modern World History and Latin American Regional Survey Courses: A Veracruz to Mexico City Case Study.

    Science.gov (United States)

    Brown, James Seay, Jr.; Sullivan-Gonzalez, Douglass

    2002-01-01

    Outlines an innovative way of teaching "World History Since 1500" at Samford University (Birmingham, Alabama) called the "great roads" approach, centered upon important roads in a country's history. Presents the "Veracruz to Mexico City corridor" case study used to teach a Latin American modern history course. (CMK)

  2. Insights and participatory actions driven by a socio-hydrogeological approach for groundwater management: the Grombalia Basin case study (Tunisia)

    Science.gov (United States)

    Tringali, C.; Re, V.; Siciliano, G.; Chkir, N.; Tuci, C.; Zouari, K.

    2017-08-01

    Sustainable groundwater management strategies in water-scarce countries need to guide future decision-making processes pragmatically, by simultaneously considering local needs, environmental problems and economic development. The socio-hydrogeological approach named `Bir Al-Nas' has been tested in the Grombalia region (Cap Bon Peninsula, Tunisia), to evaluate the effectiveness of complementing hydrogeochemical and hydrogeological investigations with the social dimension of the issue at stake (which, in this case, is the identification of groundwater pollution sources). Within this approach, the social appraisal, performed through social network analysis and public engagement of water end-users, allowed hydrogeologists to get acquainted with the institutional dimension of local groundwater management, identifying issues, potential gaps (such as weak knowledge transfer among concerned stakeholders), and the key actors likely to support the implementation of the new science-based management practices resulting from the ongoing hydrogeological investigation. Results, hence, go beyond the specific relevance for the Grombaila basin, showing the effectiveness of the proposed approach and the importance of including social assessment in any given hydrogeological research aimed at supporting local development through groundwater protection measures.

  3. Tailoring communication supports for students with multiple and severe disability using a mentor-model approach: four case studies from classrooms in special schools.

    Science.gov (United States)

    Bennett, Deone; Arthur-Kelly, Michael; Foreman, Phil; Neilands, Judy

    2014-04-01

    This paper describes four case studies of communication support for students with multiple and severe disability (MSD) in special school classrooms that used a mentor-model approach to the professional development of educational staff. A range of observational and report instruments was used to measure student changes in communicative involvement and the views of teaching staff that engaged with them. Four case studies of the contextual features, student needs and specific support strategies utilized in this study in four special school classrooms highlight the challenges that are faced by teaching staff in improving and maintaining student communication outcomes, and the reasons for these challenges. The mentor-model approach to professional development for educators working with students with MSD holds promise as a general framework for intervention. Despite the inherent variability in student outcomes and the practical limitations in practice, educators reported that the approach was helpful.

  4. Case Studies of Integrated Pedagogy in Vocational Education: A Three-Tier Approach to Empowering Vulnerable Youth in Urban Cambodia

    Science.gov (United States)

    Cheng, I-Hsuan

    2010-01-01

    This paper starts with the real-life issues pertaining to the educational, economic and socio-cultural vulnerability of young Cambodians; and the latter in turn has called for greater integrated stance in vocational education. A multiple-case study of nine educational NGOs located in four cities was conducted, whereby what constitutes an…

  5. A Case Study of Prior Knowledge, Learning Approach and Conceptual Change in an Introductory College Chemistry Tutorial Program.

    Science.gov (United States)

    Braathen, Per Christian; Hewson, Peter W.

    This paper presents a case study involving a small group of students enrolled in a tutorial program learning introductory college chemistry. The underlying theoretical framework of this investigation was a constructivist view of learning, but more specifically it was based on Ausubel's theory of meaningful learning. The findings of this…

  6. An Institutional Approach to First-Year Adjustment: The "Projeto FEUP" Case Study of a Portuguese University

    Science.gov (United States)

    Mouraz, Ana; Sousa, Armando

    2016-01-01

    This article intends to debate the institutional modes of first-year adjustment to higher education. Specifically, the aim is to analyze and consider the need to include social and academic integration activities in the curricular programs. The presented contributions are based on the investigations over the case study course that was studied…

  7. A participatory approach for integrating risk assessment into rural decision-making: A case study in Santa Catarina, Brazil

    NARCIS (Netherlands)

    Bacic, I.L.Z.; Bregt, A.K.; Rossiter, D.G.

    2006-01-01

    Incomplete information is one of the main constraints for decision-making, which are then by definition risky. In this study, formal risk concepts were introduced in decision-makers¿ meetings according to local demands and following a participatory approach, as a first step towards integrating risk

  8. Can Learning Motivation Predict Learning Achievement? A Case Study of a Mobile Game-Based English Learning Approach

    Science.gov (United States)

    Tsai, Chia-Hui; Cheng, Ching-Hsue; Yeh, Duen-Yian; Lin, Shih-Yun

    2017-01-01

    This study applied a quasi-experimental design to investigate the influence and predictive power of learner motivation for achievement, employing a mobile game-based English learning approach. A system called the Happy English Learning System, integrating learning material into a game-based context, was constructed and installed on mobile devices…

  9. Case Study Teaching

    Science.gov (United States)

    Herreid, Clyde Freeman

    2011-01-01

    This chapter describes the history of case study teaching, types of cases, and experimental data supporting their effectiveness. It also describes a model for comparing the efficacy of the various case study methods. (Contains 1 figure.)

  10. Modelling of clay diagenesis using a combined approach of crystalchemistry and thermochemistry: a case study in the smectite illitization.

    Science.gov (United States)

    Geloni, Claudio; Previde Massara, Elisabetta; Di Paola, Eleonora; Ortenzi, Andrea; Gherardi, Fabrizio; Blanc, Philippe

    2017-04-01

    procedure benefits from: (i) (minor) improvements of the I/O structure of the SSP; (ii) the development of a suite of python scripts to automate the steps needed to augment the thermodynamic database by integrating the external information provided by potential users with the XLS tool and the SSP; (iii) the creation of specific outputs to allow for more convenient handling and inspection of computed parameters of the thermodynamic database. A case study focused on non-isothermal smectite-illite transformation is presented to show the capability of our numerical models to account for clay compaction under 1D geometry conditions. This model considers fluid flow driven by the compaction of a clay layer, and chemistry-fluid flow mutual feedback with the underlying sandstone during the advancement of the diagenesis. Due to this complex interaction, as a result of the smectite-illite transformation in the clays, significant quartz cementation affects the sandstone adjacent to the compacting clay.

  11. A life cycle approach to the management of household food waste - A Swedish full-scale case study

    International Nuclear Information System (INIS)

    Bernstad, A.; Cour Jansen, J. la

    2011-01-01

    Research highlights: → The comparison of three different methods for management of household food waste show that anaerobic digestion provides greater environmental benefits in relation to global warming potential, acidification and ozone depilation compared to incineration and composting of food waste. Use of produced biogas as car fuel provides larger environmental benefits compared to a use of biogas for heat and power production. → The use of produced digestate from the anaerobic digestion as substitution for chemical fertilizer on farmland provides avoidance of environmental burdens in the same ratio as the substitution of fossil fuels with produced biogas. → Sensitivity analyses show that results are highly sensitive to assumptions regarding the environmental burdens connected to heat and energy supposedly substituted by the waste treatment. - Abstract: Environmental impacts from incineration, decentralised composting and centralised anaerobic digestion of solid organic household waste are compared using the EASEWASTE LCA-tool. The comparison is based on a full scale case study in southern Sweden and used input-data related to aspects such as source-separation behaviour, transport distances, etc. are site-specific. Results show that biological treatment methods - both anaerobic and aerobic, result in net avoidance of GHG-emissions, but give a larger contribution both to nutrient enrichment and acidification when compared to incineration. Results are to a high degree dependent on energy substitution and emissions during biological processes. It was seen that if it is assumed that produced biogas substitute electricity based on Danish coal power, this is preferable before use of biogas as car fuel. Use of biogas for Danish electricity substitution was also determined to be more beneficial compared to incineration of organic household waste. This is a result mainly of the use of plastic bags in the incineration alternative (compared to paper bags in the

  12. Nanoparticle dispersion in environmentally relevant culture media: a TiO2 case study and considerations for a general approach

    International Nuclear Information System (INIS)

    Horst, Allison M.; Ji, Zhaoxia; Holden, Patricia A.

    2012-01-01

    Nanoparticle exposure in toxicity studies requires that nanoparticles are bioavailable by remaining highly dispersed in culture media. However, reported dispersion approaches are variable, mostly study-specific, and not transferable owing to their empirical basis. Furthermore, many published approaches employ proteinaceous dispersants in rich laboratory media, both of which represent end members in environmental scenarios. Here, a systematic approach was developed to disperse initially agglomerated TiO 2 nanoparticles (Aeroxide® TiO 2 P25, Evonik, NJ; primary particle size range 6.4–73.8 nm) in oligotrophic culture medium for environmentally relevant bacterial toxicity studies. Based on understanding particle–particle interactions in aqueous media and maintaining environmental relevance, the approach involves (1) quantifying the relationship between pH and zeta potential to determine the point of zero charge of select nanoparticles in water; (2) nominating, then testing and selecting, environmentally relevant stabilizing agents; and (3) dispersing via “condition and capture” whereby stock dry powder nanoparticles are sonicated in pre-conditioned (with base, or acid, plus stabilizing agent) water, then diluted into culture media. The “condition and capture” principle is transferable to other nanoparticle and media chemistries: simultaneously, mechanically and electrostatically, nanoparticles can be dispersed with surrounding stabilizers that coat and sterically hinder reagglomeration in the culture medium.

  13. Comparing approaches for studying the effects of climate extremes - a case study of hospital admissions in Sweden during an extremely warm summer.

    Science.gov (United States)

    Rocklöv, Joacim; Forsberg, Bertil

    2009-11-11

    Health effects induced by climate, weather and climatic change may act directly or indirectly on human physiology. The future total burden of global warming is uncertain, but in some areas and for specific outcomes, mortality and morbidity are likely to increase. One likely effect of global warming is an increasing number of extreme weather events, such as floods, storms and heat waves. The excess numbers of specific health outcomes attributable to climate-induced events can be estimated. This paper compares approaches for estimating excess numbers of outcomes associated with climate extremes, exemplified by a case study of hospital admissions during the extremely warm summer of 2006 in southern Sweden. Daily hospital admission data were obtained from the Swedish National Board of Health and Welfare for six hospitals in the Skåne region of southern Sweden for the period 1998 to 2006. Daily temperature data for the region were obtained from the meteorological station in the city of Malmö. We used four established approaches for estimating the daily excess numbers associated with extreme heat. Time series of daily event rates were assumed to follow a Poisson distribution. Excess event rates were compared by using several approaches, such as standardised event ratios and generalised additive models to estimate the health risks attributable to the extreme climate event. The four approaches yielded vastly different results. The estimates of excess were considerably biased when not accounting for time trends in previous years' data. Three of four approaches showed a significant increase in excess hospitalisation rates attributable to the heat episode in Skåne in 2006. However, modelling the effect of temperature failed to describe the risks induced by the extreme heat. Estimates of excess events depend greatly on the approach used. Further research is needed to identify which method yielded the most accurate estimates. However, one of the approaches used generally

  14. a New Approach to the Sliding Mode Control Design: Anti-Lock Braking System as a Case Study

    Science.gov (United States)

    Perie, Staniša Lj.; Antic, Dragan S.; Nikolic, Vlastimir D.; Mitic, Darko B.; Milojkovic, Marko T.; Nikolic, Šaša S.

    2014-01-01

    In this paper we introduce a new approach to the sliding mode control design based on orthogonal models. First, we discuss the sliding mode control based on a model given in controllable canonical form. Then, we design almost orthogonal filters based on almost orthogonal polynomials of M¨untz-Legendre type. The advantage of the almost orthogonal filters is that they can be used for the modelling and analysis of systems with nonlinearities and imperfections. Herein, we use a designed filter to obtain several linearized models of an unknown system in different working areas. For each of these linearized models, corresponding sliding mode controller is designed and the switching between controls laws depends only on input signal. The experimental results and comparative analysis with relay control, already installed in laboratory equipment, verify the efficiency and excellent performance of such a control in the case of anti-lock braking system.

  15. Project management case studies

    CERN Document Server

    Kerzner, Harold R

    2013-01-01

    A new edition of the most popular book of project management case studies, expanded to include more than 100 cases plus a ""super case"" on the Iridium Project Case studies are an important part of project management education and training. This Fourth Edition of Harold Kerzner''s Project Management Case Studies features a number of new cases covering value measurement in project management. Also included is the well-received ""super case,"" which covers all aspects of project management and may be used as a capstone for a course. This new edition:Contains 100-plus case studies drawn from re

  16. Feasibibility study - cases

    DEFF Research Database (Denmark)

    Lund, Henrik; Hvelplund, Frede Kloster; Sukkumnoed, Decharut

    2004-01-01

    The chapter presents two case studies to show the tools of feasibiliy studies within the context of technological innovation.......The chapter presents two case studies to show the tools of feasibiliy studies within the context of technological innovation....

  17. Process skills approach to develop primary students’ scientific literacy: A case study with low achieving students on water cycle

    Science.gov (United States)

    Suryanti; Ibrahim, M.; Lede, N. S.

    2018-01-01

    The results of the Program for International Student Assessment (PISA) study on the scientific literacy of Indonesian students since the year 2000 have been still far below the international average score of 500. This could also be seen from the results of the science literacy test of 5th-grade students of primary school in Indonesia which showed that 60% of students are still at level ≤ 3 (value literacy skills need to be improved by applying learning with a process skills approach. This study aims to describe the findings of classroom action research using a process skills approach to the science literacy level of primary students (n = 23). This research was conducted in 2 cycles with stages of planning, implementation, observation, and reflection. Students’ ability in scientific literacy was measured by using description and subjective tests of context domains, knowledge, competencies, and attitudes. In this study, researchers found an improvement in students’ science literacy skills when learning using a process skills approach. In addition, students’ scientific attitude is also more positive. In activities for learning science, students should be challenged as often as possible so that they have more practice using their scientific knowledge and skills to solve problems presented by teachers in the classroom.

  18. A criticism to the classical technology innovation approach. A case study of greenhouse use in the Horticultural Belt of La Plata

    Directory of Open Access Journals (Sweden)

    Matías García

    2014-06-01

    Full Text Available This aim of this work is to critically analyze the classical technology adoption-diffusion approach. In order to do this, a general study of Rogers’s technology adoption approach is first performed. A case study is then carried out in which we describe and analyze the onset and expansion of the most important horticultural sector’s innovation: the use of greenhouse technology in the area of La Plata. Together with these two sections, we discuss how pertinent this innovation approach is and we show that Rogers’s model fails to explain small horticulturists’ behavior in the face of this technological landmark. Finally, a novel perspective is presented which may very well supplement this classical approach.

  19. Increasing Absorptive Capacity to Improve Internal and External Knowledge Transfer in Multinational Companies: A Multiple Case Study Approach

    Directory of Open Access Journals (Sweden)

    Béla-Gergely RÁCZ

    2016-12-01

    Full Text Available This study investigates how the absorptive capacity could be increased to improve internal and external knowledge transfer in subsidiaries of multinational companies. We look at the way in which the literature on absorptive capacity has evolved, and how it links the internal and external knowledge transfer. Based on 3 case studies conducted at Romanian subsidiaries of multinational companies, we find some patterns, which could explain how the successful knowledge flows should be managed within the multinational company and outside of it, in the supply chain network.

  20. Effect of evidence-based approach on the customer orientation (Case study: Physicians Health Centers in Isfahan province in 2014).

    Science.gov (United States)

    Esfahani, N G; Maharati, Y

    2015-01-01

    Introduction: The purpose of this research was to examine the approach, based on evidence to customer-orientation attending physicians in the region, them being the subject collection. Research method: This is a definitive-analytic and cross-sectional configuration, which was completed in 2014. The statistical community in this research consists of 212 doctors in the healthcare hubs. The working physicians chose 200 patients by means of a simple accidental sampling. The analysis means was the researcher built survey whose efficacy and reliability were verified. In this research, the fundamental equation design and partial least square technique were applied to examine the presumptions and fitness pattern and the structural design was agreed as adequate. Findings: The outcomes showed four cases linked to the character, a behavior which was meant to treat; traditional origins of evidence were employed to retrieve data based on the reliable evidence and the shortage of limitations to the performance of client orientation strategy of evidence-based influences were meaningful. Two ranges of the doctor's information, the absence of restrictions, and the finding of the sign of dimensions about the client orientation approach were according to the evidence that had no meaningful influence. Conclusion: The utilization of evidence-based training not only increased awareness, character, and abilities of the doctors but also allowed them to answer to the requirements of clients in choosing excellent decisions and presenting a better quality of healthcare, by decreasing treatment prices for patients, bringing satisfaction of patients, and finally having a better effectiveness for patients and institutions.

  1. Effect of evidence-based approach on the customer orientation (Case study: Physicians Health Centers in Isfahan province in 2014)

    Science.gov (United States)

    Esfahani, NG; Maharati, Y

    2015-01-01

    Introduction: The purpose of this research was to examine the approach, based on evidence to customer-orientation attending physicians in the region, them being the subject collection. Research method: This is a definitive-analytic and cross-sectional configuration, which was completed in 2014. The statistical community in this research consists of 212 doctors in the healthcare hubs. The working physicians chose 200 patients by means of a simple accidental sampling. The analysis means was the researcher built survey whose efficacy and reliability were verified. In this research, the fundamental equation design and partial least square technique were applied to examine the presumptions and fitness pattern and the structural design was agreed as adequate. Findings: The outcomes showed four cases linked to the character, a behavior which was meant to treat; traditional origins of evidence were employed to retrieve data based on the reliable evidence and the shortage of limitations to the performance of client orientation strategy of evidence-based influences were meaningful. Two ranges of the doctor's information, the absence of restrictions, and the finding of the sign of dimensions about the client orientation approach were according to the evidence that had no meaningful influence. Conclusion: The utilization of evidence-based training not only increased awareness, character, and abilities of the doctors but also allowed them to answer to the requirements of clients in choosing excellent decisions and presenting a better quality of healthcare, by decreasing treatment prices for patients, bringing satisfaction of patients, and finally having a better effectiveness for patients and institutions. PMID:28316691

  2. A practical approach for the assessment and illustration of uncertainty in emissions modelling: a case study using GAINS Ireland

    International Nuclear Information System (INIS)

    King, Fearghal; Fu, Miao; Kelly, J. Andrew

    2011-01-01

    National outlooks of emission levels are important components of international environmental policymaking and associated national policy development. This is the case for both greenhouse gas emissions and transboundary air pollutants. However, there is uncertainty inherent in the production of forecasts. In the climate context, IPCC guidelines have been established to support national teams in quantifying uncertainty within national inventory reporting of historic emissions. These are presented to indicate the potential range of deviation from reported values and to offer added evidence for policy decisions. However, the method and practice of accounting for uncertainty amongst emission forecasts is both less clear and less common. This paper posits that the role of forecasts in setting international targets and planning policy action renders the management of ‘forecast’ uncertainty as important as addressing uncertainty in the context of inventory and compliance work. Failure to explicitly present uncertainty in forecasting delivers an implicit and misplaced confidence in a given future scenario, irrespective of parallel work on other scenarios and sensitivities. However, it is acknowledged that approaches to uncertainty analyses within the literature are often highly technical and the models used are both computationally demanding and time-intensive. This can limit broader adoption where national capacities are limited and scenario development is frequent. This paper describes an approach to presenting uncertainty, where the aim is to balance the technical and temporal demands of uncertainty estimation against a means of delivering regular and practical estimation and presentation of uncertainty for any given scenario. In turn this methodology should help formalise the recognition of the uncertainty dimension in emissions forecasts, for all stakeholders engaged.

  3. Assessing levels of similarity to a "psychodynamic prototype" in psychodynamic psychotherapy with children: a case study approach (preliminary findings

    Directory of Open Access Journals (Sweden)

    Marina Bento Gastaud

    2015-09-01

    Full Text Available Objective:To analyze the degree of similarity to a "psychodynamic prototype" during the first year of two children's once-weekly psychodynamic psychotherapy.Methods: This study used a longitudinal, descriptive, repeated-measures design based on the systematic case study method. Two male school children (here referred to as Walter and Peter and their therapists took part in the study. All sessions were video and audio recorded. Ten sessions from each case were selected for analysis in this preliminary study. Trained examiners (randomly selected in pairs independently and blindly evaluated each session using the Child Psychotherapy Q-Set (CPQ. Experts in psychodynamic therapy and cognitive behavioral therapy from several countries rated each of the 100 CPQ items with regard to how well it characterized a hypothetical ideal session of either treatment modality. A series of paired t tests comparing analogous adherence scores within each session were conducted.Results:There were no significant correlations between time elapsed and adherence to the prototypes. Walter's treatment adhered to both prototypes and Peter's treatment did not adhere to either prototype.Conclusion:Child psychotherapy theory and practice are not absolutely coincident. Real psychotherapy sessions do not necessarily resemble the ideal prototypes.

  4. How physics teachers approach innovation: An empirical study for reconstructing the appropriation path in the case of special relativity

    Directory of Open Access Journals (Sweden)

    Anna De Ambrosis

    2010-08-01

    Full Text Available This paper concerns an empirical study carried out with a group of high school physics teachers engaged in the Module on relativity of a Master course on the teaching of modern physics. The study is framed within the general research issue of how to promote innovation in school via teachers’ education and how to foster fruitful interactions between research and school practice via the construction of networks of researchers and teachers. In the paper, the problems related to innovation are addressed by focusing on the phase during which teachers analyze an innovative teaching proposal in the perspective of designing their own paths for the class work. The proposal analyzed in this study is Taylor and Wheeler’s approach for teaching special relativity. The paper aims to show that the roots of problems known in the research literature about teachers’ difficulties in coping with innovative proposals, and usually related to the implementation process, can be found and addressed already when teachers approach the proposal and try to appropriate it. The study is heuristic and has been carried out in order to trace the “appropriation path,” followed by the group of teachers, in terms of the main steps and factors triggering the progressive evolution of teachers’ attitudes and competences.

  5. Feature Selection as a Time and Cost-Saving Approach for Land Suitability Classification (Case Study of Shavur Plain, Iran

    Directory of Open Access Journals (Sweden)

    Saeid Hamzeh

    2016-10-01

    Full Text Available Land suitability classification is important in planning and managing sustainable land use. Most approaches to land suitability analysis combine a large number of land and soil parameters, and are time-consuming and costly. In this study, a potentially useful technique (combined feature selection and fuzzy-AHP method to increase the efficiency of land suitability analysis was presented. To this end, three different feature selection algorithms—random search, best search and genetic methods—were used to determine the most effective parameters for land suitability classification for the cultivation of barely in the Shavur Plain, southwest Iran. Next, land suitability classes were calculated for all methods by using the fuzzy-AHP approach. Salinity (electrical conductivity (EC, alkalinity (exchangeable sodium percentage (ESP, wetness and soil texture were selected using the random search method. Gypsum, EC, ESP, and soil texture were selected using both the best search and genetic methods. The result shows a strong agreement between the standard fuzzy-AHP methods and methods presented in this study. The values of Kappa coefficients were 0.82, 0.79 and 0.79 for the random search, best search and genetic methods, respectively, compared with the standard fuzzy-AHP method. Our results indicate that EC, ESP, soil texture and wetness are the most effective features for evaluating land suitability classification for the cultivation of barely in the study area, and uses of these parameters, together with their appropriate weights as obtained from fuzzy-AHP, can perform good results for land suitability classification. So, the combined feature selection presented and the fuzzy-AHP approach has the potential to save time and money for land suitability classification.

  6. Application of the BRAFO tiered approach for benefit–risk assessment to case studies on dietary interventions

    DEFF Research Database (Denmark)

    Verhagen, Hans; Andersen, Rikke; Antoine, Jean-Michel

    2011-01-01

    for the individual effects done by others; no new risk or benefit evaluations were made. The following case studies were thoroughly analysed: an example of food fortification, folic acid fortification of flour, macronutrient replacement/food substitution; the isocaloric replacement of saturated fatty acids...... with carbohydrates; the replacement of saturated fatty acids with monounsaturated fatty acids; the replacement of sugar-sweetened beverages containing mono- and disaccharides with low calorie sweeteners and an example of addition of specific ingredients to food: chlorination of drinking water....

  7. Proper knowledge on toxicokinetics improves human hazard testing and subsequent health risk characterisation. A case study approach.

    Science.gov (United States)

    Bessems, Jos G M; Geraets, Liesbeth

    2013-12-01

    In the current EU legislative frameworks on chemicals safety, the requirements with respect to information on general kinetic parameters (absorption, distribution, metabolism and excretion or ADME) or integrated toxicokinetic parameters (TK, i.e. plasma concentration-time curve, area under the curve etcetera) in humans and experimental animals vary widely. For agrochemicals and cosmetics, there are regulatory requirements whereas for other frameworks, such as food ingredients, biocides, consumer products and high production volume chemicals (REACH) there are very little or no requirements. This paper presents case studies that illustrate the importance of ADME and TK data in regulatory risk characterisations. The examples were collected by interviewing regulatory risk assessors from various chemicals (non-pharmaceutical) frameworks. The case studies illustrate how (1) applying ADME/TK in an early phase of toxicity testing can be used to improve study design and support the 3R-goals and how (2) increased use of ADME/TK data can improve the final risk assessment. Copyright © 2013 Elsevier Inc. All rights reserved.

  8. Theory Testing Using Case Studies

    DEFF Research Database (Denmark)

    Møller, Ann-Kristina Løkke; Dissing Sørensen, Pernille

    2014-01-01

    The appropriateness of case studies as a tool for theory testing is still a controversial issue, and discussions about the weaknesses of such research designs have previously taken precedence over those about its strengths. The purpose of the paper is to examine and revive the approach of theory...... testing using case studies, including the associated research goal, analysis, and generalisability. We argue that research designs for theory testing using case studies differ from theorybuilding case study research designs because different research projects serve different purposes and follow different...

  9. Evaluation of Bilingual Intercultural Approach in Indigenous Primary Education: Case Study in the Indigenous Region Los Altos, Chiapas

    Directory of Open Access Journals (Sweden)

    José Viveros-Márquez

    2016-05-01

    Full Text Available The objective of this study was to evaluate the implementation of the EIB (Bilingual Intercultural approach, by its acronym in Spanish in an elementary indigenous school located in San Cristóbal de las Casas, Chiapas. This school is characterized by the cultural and linguistic diversity represented by the integration of teachers, students and parents of tseltal and tsotsil origin. We use the evaluation model CIPP (context, input, process and product and complemented it with school ethnography, using semi-structured interviews (director and supervisor, participant observation (classroom sessions, focus group interviews to teachers and parents and a sociolinguistic questionnaire to students. The theoretical framework retrieves the core theoretical elements of the EIB, by reviewing and analysing bilingual education, bilingual bicultural education (biculturalism, pedagogical interculturalism and the intercultural bilingual approach. The main findings of this study show that, in practice, intercultural bilingual indigenous education has not transcended the bilingual dimension (the indigenous language teaching. Interculturalism is not yet clearly integrated in the speech nor in the educational practice of the studied school. The EIB implementation is still limited and responds to sociocultural, linguistic, political, educational and teacher training conditions that characterize the local educational context and are not favorable to enhance the effective implementation of the EIB in the primary school.

  10. Multiple approaches to characterize the microbial community in a thermophilic anaerobic digester running on swine manure: a case study.

    Science.gov (United States)

    Tuan, Nguyen Ngoc; Chang, Yi-Chia; Yu, Chang-Ping; Huang, Shir-Ly

    2014-01-01

    In this study, the first survey of microbial community in thermophilic anaerobic digester using swine manure as sole feedstock was performed by multiple approaches including denaturing gradient gel electrophoresis (DGGE), clone library and pyrosequencing techniques. The integrated analysis of 21 DGGE bands, 126 clones and 8506 pyrosequencing read sequences revealed that Clostridia from the phylum Firmicutes account for the most dominant Bacteria. In addition, our analysis also identified additional taxa that were missed by the previous researches, including members of the bacterial phyla Synergistetes, Planctomycetes, Armatimonadetes, Chloroflexi and Nitrospira which might also play a role in thermophilic anaerobic digester. Most archaeal 16S rRNA sequences could be assigned to the order Methanobacteriales instead of Methanomicrobiales comparing to previous studies. In addition, this study reported that the member of Methanothermobacter genus was firstly found in thermophilic anaerobic digester. Copyright © 2014 Elsevier GmbH. All rights reserved.

  11. A practical approach to phylogenomics: the phylogeny of ray-finned fish (Actinopterygii as a case study

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    Zhang Gong

    2007-03-01

    Full Text Available Abstract Background Molecular systematics occupies one of the central stages in biology in the genomic era, ushered in by unprecedented progress in DNA technology. The inference of organismal phylogeny is now based on many independent genetic loci, a widely accepted approach to assemble the tree of life. Surprisingly, this approach is hindered by lack of appropriate nuclear gene markers for many taxonomic groups especially at high taxonomic level, partially due to the lack of tools for efficiently developing new phylogenetic makers. We report here a genome-comparison strategy to identifying nuclear gene markers for phylogenetic inference and apply it to the ray-finned fishes – the largest vertebrate clade in need of phylogenetic resolution. Results A total of 154 candidate molecular markers – relatively well conserved, putatively single-copy gene fragments with long, uninterrupted exons – were obtained by comparing whole genome sequences of two model organisms, Danio rerio and Takifugu rubripes. Experimental tests of 15 of these (randomly picked markers on 36 taxa (representing two-thirds of the ray-finned fish orders demonstrate the feasibility of amplifying by PCR and directly sequencing most of these candidates from whole genomic DNA in a vast diversity of fish species. Preliminary phylogenetic analyses of sequence data obtained for 14 taxa and 10 markers (total of 7,872 bp for each species are encouraging, suggesting that the markers obtained will make significant contributions to future fish phylogenetic studies. Conclusion We present a practical approach that systematically compares whole genome sequences to identify single-copy nuclear gene markers for inferring phylogeny. Our method is an improvement over traditional approaches (e.g., manually picking genes for testing because it uses genomic information and automates the process to identify large numbers of candidate makers. This approach is shown here to be successful for fishes

  12. Development of a rapid approach for the enumeration of Escherichia coli in riverbed sediment: case study, the Apies River, South Africa

    CSIR Research Space (South Africa)

    Abia, ALK

    2015-12-01

    Full Text Available and Sediments Development of a rapid approach for the enumeration of Escherichia coli in riverbed sediment: case study, the Apies River, South Africa L. K. A. Abia: M. N. B. Momba Department of Environmental, Water and Earth Science, Tshwane University... bottle for analysis using the Colilert™ 18/Quantitray-2000 system from IDEXX. Results and discussion: There was a statistically significant difference between the mean Escherichia coli counts when comparing the weighing method to the water...

  13. A Case Approach for Teaching Academic Writing.

    Science.gov (United States)

    McCleary, William J.

    1985-01-01

    Describes an approach to composition instruction in which the students are given a body of real or fictional evidence about a particular case and asked to interpret or explain it by means of a closely-reasoned argument. (HTH)

  14. A Modeling Approach for Farmland Protection Zoning Considering Spatial Heterogeneity: A Case Study of E-Zhou City, China

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    Jianhua He

    2016-10-01

    Full Text Available Farmland protection in China is facing multiple pressures, including urbanization, population growth and ecological degradation. Primary farmland zoning was introduced as a basic state policy to ensure national food security. Previous studies about “primary farmland zoning” have always taken the factors as global linear variables, neglecting the spatial heterogeneity of the study areas. Based on the Development Priority Zoning (DPZ strategy, we present a zoning approach using Bayesian networks (BNs for considering regional differences. The networks were developed using quantitative biophysical and economic variables from multi-scale and historical change data of farmland. The simulated results substantiate that this method can ensure the agricultural quality, stability and connectivity of primary farmland. Furthermore, it can further optimize the spatial allocation of primary farmland to meet the development conditions and trends of different sub-regions, promoting the balance between the farmland protection, urban development and ecological protection of certain regions.

  15. A multi-objective approach for optimal prioritization of energy efficiency measures in buildings: Model, software and case studies

    International Nuclear Information System (INIS)

    Karmellos, M.; Kiprakis, A.; Mavrotas, G.

    2015-01-01

    Highlights: • We provide a model for prioritization of energy efficiency measures in buildings. • We examine the case of a new building and one under renovation. • Objective functions are total primary energy consumption and total investment cost. • We provide a software tool that solves this multi-objective optimization problem. • Primary energy consumption and investment cost are inversely proportional. - Abstract: Buildings are responsible for some 40% of the total final energy consumption in the European Union and about 40% of the world’s primary energy consumption. Hence, the reduction of primary energy consumption is important for the overall energy chain. The scope of the current work is to assess the energy efficiency measures in the residential and small commercial sector and to develop a methodology and a software tool for their optimal prioritization. The criteria used for the prioritization of energy efficiency measures in this article are the primary energy consumption and the initial investment cost. The developed methodology used is generic and could be implemented in the case of a new building or retrofitting an existing building. A multi-objective mixed-integer non-linear problem (MINLP) needs to be solved and the weighted sum method is used. Moreover, the novelty of this work is that a software tool has been developed using ‘Matlab®’ which is generic, very simple and time efficient and can be used by a Decision Maker (DM). Two case studies have been developed, one for a new building and one for retrofitting an existing one, in two cities with different climate characteristics. The building was placed in Edinburgh in the UK and Athens in Greece and the analysis showed that the primary energy consumption and the initial investment cost are inversely proportional

  16. Organizational impact of evidence-informed decision making training initiatives: a case study comparison of two approaches.

    Science.gov (United States)

    Champagne, François; Lemieux-Charles, Louise; Duranceau, Marie-France; MacKean, Gail; Reay, Trish

    2014-05-02

    The impact of efforts by healthcare organizations to enhance the use of evidence to improve organizational processes through training programs has seldom been assessed. We therefore endeavored to assess whether and how the training of mid- and senior-level healthcare managers could lead to organizational change. We conducted a theory-driven evaluation of the organizational impact of healthcare leaders' participation in two training programs using a logic model based on Nonaka's theory of knowledge conversion. We analyzed six case studies nested within the two programs using three embedded units of analysis (individual, group and organization). Interviews were conducted during intensive one-week data collection site visits. A total of 84 people were interviewed. We found that the impact of training could primarily be felt in trainees' immediate work environments. The conversion of attitudes was found to be easier to achieve than the conversion of skills. Our results show that, although socialization and externalization were common in all cases, a lack of combination impeded the conversion of skills. We also identified several individual, organizational and program design factors that facilitated and/or impeded the dissemination of the attitudes and skills gained by trainees to other organizational members. Our theory-driven evaluation showed that factors before, during and after training can influence the extent of skills and knowledge transfer. Our evaluation went further than previous research by revealing the influence--both positive and negative--of specific organizational factors on extending the impact of training programs.

  17. Exploring the relationship between social identity and workplace jurisdiction for new nursing roles: a case study approach.

    Science.gov (United States)

    Maxwell, E; Baillie, L; Rickard, W; McLaren, S M

    2013-05-01

    The introduction of new healthcare roles internationally has had mixed results with some evidence that variations can be accounted for by the manner of their introduction rather than role content. Explanation may be found partly in the ways in which new roles establish a workplace jurisdiction; that is, recognition in the workplace of a role's legitimate rights to undertake a particular scope of practice. To explore the factors that influence the development of workplace jurisdiction of new nursing roles. Critical realist multiple case study design within two NHS Acute Hospital Trusts in England and two new nursing roles as embedded units of analysis in each case (n=4 roles). In Phase 1, data were collected through semi-structured interviews (n=21), non-participant observation of committees (n=11), partial participant observation and shadowing of the role holders' working day (n=9), together with analysis of organisational documents (n=33). In Phase 2, follow up interviews with role-holders (n=4) were conducted. Participants Staff in new nursing roles (n=4) were selected purposively as embedded units according to the theoretical framework and other informants (n=17) were selected according to the study propositions. Qualitative analysis demonstrated that different role drivers produced two different role types, each of whom faced different challenges in negotiating the implementation of the role in the workplace. Negotiation of workplace jurisdiction was shown to be dependent on sharing social identities with co-workers. Four major workplace identities were found: professional, speciality, organisational and relational. The current focus on setting legal and public jurisdictions for new nursing roles through national standards and statutory registration needs to be complemented by a better understanding of how workplace jurisdiction is achieved. This study suggests that social identity is a significant determinant. Copyright © 2012 Elsevier Ltd. All rights

  18. A case study evaluation of a Critical Care Information System adoption using the socio-technical and fit approach.

    Science.gov (United States)

    Yusof, Maryati Mohd

    2015-07-01

    Clinical information systems have long been used in intensive care units but reports on their adoption and benefits are limited. This study evaluated a Critical Care Information System implementation. A case study summative evaluation was conducted, employing observation, interview, and document analysis in operating theatres and 16-bed adult intensive care units in a 400-bed Malaysian tertiary referral centre from the perspectives of users (nurses and physicians), management, and information technology staff. System implementation, factors influencing adoption, fit between these factors, and the impact of the Critical Care Information System were evaluated after eight months of operation. Positive influences on system adoption were associated with technical factors, including system ease of use, usefulness, and information relevancy; human factors, particularly user attitude; and organisational factors, namely clinical process-technology alignment and champions. Organisational factors such as planning, project management, training, technology support, turnover rate, clinical workload, and communication were barriers to system implementation and use. Recommendations to improve the current system problems were discussed. Most nursing staff positively perceived the system's reduction of documentation and data access time, giving them more time with patients. System acceptance varied among doctors. System use also had positive impacts on timesaving, data quality, and clinical workflow. Critical Care Information Systems is crucial and has great potentials in enhancing and delivering critical care. However, the case study findings showed that the system faced complex challenges and was underutilised despite its potential. The role of socio-technical factors and their fit in realizing the potential of Critical Care Information Systems requires continuous, in-depth evaluation and stakeholder understanding and acknowledgement. The comprehensive and specific evaluation

  19. Commercialization as a recommended approach to hospital restructuring. Case study of Łańcut Medical Center

    Directory of Open Access Journals (Sweden)

    Wiktor Patena

    2015-10-01

    Full Text Available Our society is on the brink of health care system reorganization and implementation of new medical technology. Hospitals have to be a core component of the medical revolution so they have to be prepared for the upcoming leap in their development. If Poland wants to be a pioneer in providing new medical solutions, the current ineffective system has to be changed. The necessary action should be taken to deal with the financial problems Polish hospitals have faced for over 20 years. The current structure of hospitals - SPZOZ, is old-fashioned and cannot adapt to a turbulent social and economic environment. The hospitals should be commercialized and restructured. Being capitalized companies will give incentives and new tools to deal with financial problems. The article presents an example of the commercialized hospital in Łańcut. We make the observations that commercialization increases: a hospital’s profitability, its employment productivity, its capital investment spending and leverage. The case proves that the transformation of hospitals to capital companies proposed by the Ministry of Health may be an appropriate approach and it does work once a reasonable management board is in charge. However, the legal structure alteration should be treated as the first step in the overall restructuring process. The article highlights the problem of managers of Polish hospitals who do not only struggle with financial shortages, but barely know which business model they should follow after commercialization to successfully run the restructuring process. Having examined the LMC the authors are crafting a prelude to the overall research on already commercialized hospitals to find an appropriate business model.

  20. What will it take to improve prevention of chronic diseases in Australia? A case study of two national approaches.

    Science.gov (United States)

    Wutzke, Sonia; Morrice, Emily; Benton, Murray; Wilson, Andrew

    2017-05-01

    Objective Despite being a healthy country by international standards, Australia has a growing and serious burden from chronic diseases. There have been several national efforts to tackle this problem, but despite some important advances much more needs to be done. From the viewpoint of diverse stakeholders, the present study examined two approaches to controlling chronic disease in Australia: (1) the 2005 National Chronic Disease Strategy (NCDS); and (2) the 2008 National Partnership Agreement on Preventive Health (NPAPH). Methods Individual and small group semistructured interviews were undertaken with 29 leaders across Australia, reflecting a diverse cross-section of senior public health managers and program implementation staff from state and territory health departments, as well as academics, thought leaders and public health advocates. A grounded theory approach was used to generate themes relevant to the research. Results There is general support for national approaches to the prevention of chronic disease. The NCDS was viewed as necessary and useful for national coordination, setting a common agenda and serving as an anchor to align jurisdictional priorities and action. However, without funding or other infrastructure commitments or implementation plans, any expectations as to what could be meaningfully achieved were limited. In contrast, although jurisdictions welcomed the NPAPH, its associated funding and the opportunity to tailor strategy to their unique needs and populations, there were calls for greater national leadership as well as guidance on the evidence base to inform decision making. Key aspects of successful national action were strong Australian Government leadership and coordination, setting a common agenda, national alignment on priorities, evidence-informed implementation strategies, partnerships within and across governments, as well as with other sectors, and funding and infrastructure to support implementation. Conclusions Both the NCDS

  1. Graphical approach to assess the soil fertility evaluation model validity for rice (case study: southern area of Merapi Mountain, Indonesia)

    Science.gov (United States)

    Julianto, E. A.; Suntoro, W. A.; Dewi, W. S.; Partoyo

    2018-03-01

    Climate change has been reported to exacerbate land resources degradation including soil fertility decline. The appropriate validity use on soil fertility evaluation could reduce the risk of climate change effect on plant cultivation. This study aims to assess the validity of a Soil Fertility Evaluation Model using a graphical approach. The models evaluated were the Indonesian Soil Research Center (PPT) version model, the FAO Unesco version model, and the Kyuma version model. Each model was then correlated with rice production (dry grain weight/GKP). The goodness of fit of each model can be tested to evaluate the quality and validity of a model, as well as the regression coefficient (R2). This research used the Eviews 9 programme by a graphical approach. The results obtained three curves, namely actual, fitted, and residual curves. If the actual and fitted curves are widely apart or irregular, this means that the quality of the model is not good, or there are many other factors that are still not included in the model (large residual) and conversely. Indeed, if the actual and fitted curves show exactly the same shape, it means that all factors have already been included in the model. Modification of the standard soil fertility evaluation models can improve the quality and validity of a model.

  2. A New Approach to Integrate Internet-of-Things and Software-as-a-Service Model for Logistic Systems: A Case Study

    Directory of Open Access Journals (Sweden)

    Shang-Liang Chen

    2014-03-01

    Full Text Available Cloud computing is changing the ways software is developed and managed in enterprises, which is changing the way of doing business in that dynamically scalable and virtualized resources are regarded as services over the Internet. Traditional manufacturing systems such as supply chain management (SCM, customer relationship management (CRM, and enterprise resource planning (ERP are often developed case by case. However, effective collaboration between different systems, platforms, programming languages, and interfaces has been suggested by researchers. In cloud-computing-based systems, distributed resources are encapsulated into cloud services and centrally managed, which allows high automation, flexibility, fast provision, and ease of integration at low cost. The integration between physical resources and cloud services can be improved by combining Internet of things (IoT technology and Software-as-a-Service (SaaS technology. This study proposes a new approach for developing cloud-based manufacturing systems based on a four-layer SaaS model. There are three main contributions of this paper: (1 enterprises can develop their own cloud-based logistic management information systems based on the approach proposed in this paper; (2 a case study based on literature reviews with experimental results is proposed to verify that the system performance is remarkable; (3 challenges encountered and feedback collected from T Company in the case study are discussed in this paper for the purpose of enterprise deployment.

  3. A new approach to integrate Internet-of-things and software-as-a-service model for logistic systems: a case study.

    Science.gov (United States)

    Chen, Shang-Liang; Chen, Yun-Yao; Hsu, Chiang

    2014-03-28

    Cloud computing is changing the ways software is developed and managed in enterprises, which is changing the way of doing business in that dynamically scalable and virtualized resources are regarded as services over the Internet. Traditional manufacturing systems such as supply chain management (SCM), customer relationship management (CRM), and enterprise resource planning (ERP) are often developed case by case. However, effective collaboration between different systems, platforms, programming languages, and interfaces has been suggested by researchers. In cloud-computing-based systems, distributed resources are encapsulated into cloud services and centrally managed, which allows high automation, flexibility, fast provision, and ease of integration at low cost. The integration between physical resources and cloud services can be improved by combining Internet of things (IoT) technology and Software-as-a-Service (SaaS) technology. This study proposes a new approach for developing cloud-based manufacturing systems based on a four-layer SaaS model. There are three main contributions of this paper: (1) enterprises can develop their own cloud-based logistic management information systems based on the approach proposed in this paper; (2) a case study based on literature reviews with experimental results is proposed to verify that the system performance is remarkable; (3) challenges encountered and feedback collected from T Company in the case study are discussed in this paper for the purpose of enterprise deployment.

  4. Issues of knowledge and expertise in policy arrangements: An exploratory case study of the dynamic preservation approach to coastal management

    NARCIS (Netherlands)

    van der Molen, Franke

    2012-01-01

    Since 1990, the Dutch government applies the approach of dynamic preservation to coastal management. One of the characteristics of this approach is that, compared to the old approach, more room is allowed for natural dynamic movement of sand, in order to preserve the coastline, increase coastal

  5. THE CASE APPROACH TO PREPARING FOR TEACHING.

    Science.gov (United States)

    AMIDON, EDMUND; HUNTER, ELIZABETH

    TO HELP PROSPECTIVE TEACHERS DEVELOP TEACHING SKILLS, PAIRS OF CASES (RECORDS OF REAL TEACHING SITUATIONS) WHICH DEPICT SIGNIFICANTLY DIFFERENT APPROACHES TAKEN BY TEACHERS WITH A SIMILAR CLASSROOM PROBLEM ARE VERBALLY DESCRIBED. EACH PAIR OF CASES IS ANALYZED USING THE CATEGORIES OF THE VERBAL INTERACTION CATEGORY SYSTEM (VICS) WHICH MEASURES…

  6. A Novel Approach for Assessing the Performance of Sustainable Urbanization Based on Structural Equation Modeling: A China Case Study

    Directory of Open Access Journals (Sweden)

    Liudan Jiao

    2016-09-01

    Full Text Available The rapid urbanization process has brought problems to China, such as traffic congestion, air pollution, water pollution and resources scarcity. Sustainable urbanization is commonly appreciated as an effective way to promote the sustainable development. The proper understanding of the sustainable urbanization performance is critical to provide governments with support in making urban development strategies and policies for guiding the sustainable development. This paper utilizes the method of Structural equation modeling (SEM to establish an assessment model for measuring sustainable urbanization performance. Four unobserved endogenous variables, economic variable, social variable, environment variable and resource variable, and 21 observed endogenous variables comprise the SEM model. A case study of the 31 provinces in China demonstrates the validity of the SEM model and the analysis results indicated that the assessment model could help make more effective policies and strategies for improving urban sustainability by recognizing the statue of sustainable urbanization.

  7. Couple psychotherapy from an attachment theory perspective: a case study approach to challenging the dual nihilism of being an older person and someone with a terminal illness.

    Science.gov (United States)

    McWilliams, A E

    2004-12-01

    This article outlines the basic tenets of attachment theory and its relevance to adult couple psychotherapy. The paper also explores the nihilism around psychic change in older people and people with cancer and explores some possible reasons for this nihilism. A case study of older people, a couple, one of whom has a terminal cancer diagnosis, is presented to demonstrate the usefulness of therapeutic intervention in such cases from an attachment theory perspective. A discussion of the usefulness and difficulties of this approach follows. Other therapeutic models could also be applied usefully to this type of clinical presentation. However, the focus of this paper is the specific elucidation of attachment theory to demonstrate that change can occur regardless of a person's age and physical circumstances. The particular therapeutic approach presented here also represents the specialist interest and training of the writer in regard to couple work.

  8. Biases and best approaches for assessing debris ingestion in sea turtles, with a case study in the Mediterranean.

    Science.gov (United States)

    Casale, Paolo; Freggi, Daniela; Paduano, Valentina; Oliverio, Marco

    2016-09-15

    In a sample of 567 loggerhead turtles (Caretta caretta) from the central Mediterranean, debris occurrence varied according to methods and turtle source, and was up to 80% in pelagic turtles. Frequencies of plastic types, size and color are also reported. These results and a critical review of 49 studies worldwide indicate that: (i) the detected occurrence of plastic (% turtles) is affected by several factors (e.g., necropsy/feces, ecological zone, type and date of finding, captivity period for feces collection), (ii) mixed dataset and opportunistic approaches provide results which are biased , not comparable, and ultimately of questionable value, (iii) only turtles assumed to have had a normal feeding behaviour at the time of capture or death should be considered, (iv) turtle foraging ecology and possible selectivity may undermine the use of turtles as indicator species for monitoring marine litter, as recently proposed for the Mediterranean. Copyright © 2016 Elsevier Ltd. All rights reserved.

  9. Integrated package approach in delivering interventions during immunisation campaigns in a complex environment in Papua New Guinea: a case study.

    Science.gov (United States)

    Vince, John David; Datta, Siddhartha Sankar; Toikilik, Steven; Lagani, William

    2014-08-06

    Papua New Guinea's difficult and varied topography, poor transport infrastructure, changing dynamics of population and economy in recent times and understaffed and poorly financed health service present major challenges for successful delivery of vaccination and other preventative health interventions to both the rural majority and urban populations, thereby posing risks for vaccine preventable disease outbreaks in the country. The country has struggled to meet the vaccination coverage targets required for the eradication of poliomyelitis and elimination of measles. Escalation of inter and intra country migration resulting from major industrial developments, particularly in extraction industries, has substantially increased the risk of infectious disease importation. This case study documents the evolution of immunisation programmes since the introduction of supplementary immunisation activities (SIAs). Single antigen SIAs have advantages and disadvantages. In situations in which the delivery of preventative health interventions is difficult, it is likely that the cost benefit is greater for multiple than for single intervention. The lessons learned from the conduct of single antigen SIAs can be effectively used for programmes delivering multiple SIA antigens, routine immunisations, and other health interventions. This paper describes a successful and cost effective multiple intervention programme in Papua New Guinea. The review of the last SIA in Papua New Guinea showed relatively high coverage of all the interventions and demonstrated the operational feasibility of delivering multiple interventions in resource constrained settings. Studies in other developing countries such as Lesotho and Ethiopia have also successfully integrated health interventions with SIA. In settings such as Papua New Guinea there is a strong case for integrating supplementary immunisation activity with routine immunisation and other health interventions through a comprehensive outreach

  10. A social marketing approach to quality improvement in family planning services: a case study from Rawalpindi, Pakistan.

    Science.gov (United States)

    Gulzar, Jamshaid; Ali, Moazzam; Kuroiwa, Chushi

    2008-02-01

    In the 1990s, social marketing approach was introduced in Pakistan to improve the quality and accessibility of family planning methods involving private practitioners. This study measured six quality elements using a Bruce-Jain framework. Cross-sectional survey data were collected from 29 randomly selected Green Star clinics. The study's four components were 1) an inventory of each outlet (infrastructure, equipment, and supplies); 2) an observation guide for interaction between family planning clients and service providers; 3) exit interviews with clients attending the outlet; and 4) interviews with providers at the outlet. Of the 29 clients participating in the exit interviews, 72% were new users of family planning. The clients' mean age was 32 years; all clients were married; 93% had received formal education. Housework was the principal activity of 93% of clients. The mean number of children reported was three. Both hormonal and intrauterine contraceptives (IUCDs) were available in all facilities; 86% of the clients reported being able to obtain their contraceptive of choice. Most facilities had the equipment and supplies needed to deliver services; service personnel were trained and regularly supervised; the service outlets emphasized mechanisms to ensure continuity of use. Notable shortcomings included a shortage of information on alternative methods, contraindications, and side-effect management, as well as a dearth of registration records. In conclusion, this is a good example of public-private partnership involving private practitioners using a social marketing approach. The quality components of a Bruce-Jain framework were achieved, resulting in a satisfied clientele. Involvement of private service outlets increased the accessibility and enhanced the use of services. Social marketing may be expanded to improve quality and access by involving further components of health care.

  11. Geospatial approach in determining anthropogenic factors contributed to deforestation of mangrove: A case study in Konawe Selatan, Southeast Sulawesi

    Science.gov (United States)

    Nurhayati Yusuf, Dewi; Prasetyo, L. B.; Kusmana, C.; Machfud

    2017-01-01

    Human activities play an important role in ecosystem damage occurrence, particularly located in rapid developing city. Coastal area is one that has high resource potential, but also susceptible to disturbance since most of the population live in these areas. The development of coastal areas is also influenced by rapid development activities on land and sea. Mangrove is one of the dominant coastal ecosystems, highly productive, complex and high-value benefits. Therefore it is important to learn how anthropogenic factors affect the level of disruption to mangrove ecosystem. In this paper, several factors which considered as dominant have been evaluated through a case study in Konawe Selatan, Southeast Sulawesi. Geospatial model was used to mapping zone with disturbance level based on the anthropogenic factors. The result showed areas with highest disturbance level identified in some areas of District Tinangge; Palangga Selatan; Laeya; Lainea; middle of Kolono Bay; along coast area of Moramo and Moramo Utara. It can be concluded that mangrove ecosystem disruption level due model to anthropogenic factors may determine closely to the factual situation involving socio-economic data. This study provide a guide for future studies on mangrove susceptibility mapping and references in determining the strategy of sustainability mangrove management.

  12. Assessment of urban vulnerability towards floods using an indicator-based approach – a case study for Santiago de Chile

    Directory of Open Access Journals (Sweden)

    A. Müller

    2011-08-01

    Full Text Available Regularly occurring flood events do have a history in Santiago de Chile, the capital city of Chile and study area for this research. The analysis of flood events, the resulting damage and its causes are crucial prerequisites for the development of risk prevention measures. The goal of this research is to empirically investigate the vulnerability towards floods in Santiago de Chile as one component of flood risk. The analysis and assessment of vulnerability is based on the application of a multi-scale (individual, household, municipal level set of indicators and the use of a broad range of data. The case-specific set of indicators developed in this study shows the relevant variables and their interrelations influencing the flood vulnerability in the study area. It provides a decision support tool for stakeholders and allows for monitoring and evaluating changes over time. The paper outlines how GIS, census, and remote sensing data as well as household surveys and expert interviews are used as an information base for the derivation of a vulnerability map for two municipalities located in the eastern part of Santiago de Chile. The generation of vulnerability maps representing the two different perspectives of local decision makers (experts and affected households is exemplified and discussed using the developed methodology.

  13. An integrated approach for estimating oil volume in petroleum-contaminated sites: a North American case study

    International Nuclear Information System (INIS)

    Chen, Z.; Huang, G.H.; Chakma, A.

    1999-01-01

    An integrated approach for estimating the distribution of light nonaqueous phase liquids (LNAPLs) such as oil spill and leakage in a porous media is proposed, based on a study at a site located in western Canada. The site has one original release source that is a flare pit, with on-site soil and groundwater seriously contaminated by petroleum products spilled over the past two decades. Results of the study show that soil properties and site characteristics have significant impact on the spreading of contaminants which affect the estimation of contaminant volume. Although the LNAPLs in the subsurface do not appear as a distinct layer, and the volume and distribution differ from site to site, the proposed method offers insight into the contamination details and is, therefore, considered to be an effective and convenient tool for obtaining a reasonable estimate of residual oil volume in the subsurface. Results could also be used in designing an enhanced recovery scheme for the site under study, as well as in designing multi-component models of the subsurface contamination for the purpose of risk assessment. 13 refs., 2 tabs., 2 figs

  14. Comparing approaches to spatially explicit ecosystem service modeling: a case study from the San Pedro River, Arizona

    Science.gov (United States)

    Bagstad, Kenneth J.; Semmens, Darius J.; Winthrop, Robert

    2013-01-01

    Although the number of ecosystem service modeling tools has grown in recent years, quantitative comparative studies of these tools have been lacking. In this study, we applied two leading open-source, spatially explicit ecosystem services modeling tools – Artificial Intelligence for Ecosystem Services (ARIES) and Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) – to the San Pedro River watershed in southeast Arizona, USA, and northern Sonora, Mexico. We modeled locally important services that both modeling systems could address – carbon, water, and scenic viewsheds. We then applied managerially relevant scenarios for urban growth and mesquite management to quantify ecosystem service changes. InVEST and ARIES use different modeling approaches and ecosystem services metrics; for carbon, metrics were more similar and results were more easily comparable than for viewsheds or water. However, findings demonstrate similar gains and losses of ecosystem services and conclusions when comparing effects across our scenarios. Results were more closely aligned for landscape-scale urban-growth scenarios and more divergent for a site-scale mesquite-management scenario. Follow-up studies, including testing in different geographic contexts, can improve our understanding of the strengths and weaknesses of these and other ecosystem services modeling tools as they move closer to readiness for supporting day-to-day resource management.

  15. An Analytic Network Process approach for the environmental aspect selection problem — A case study for a hand blender

    International Nuclear Information System (INIS)

    Bereketli Zafeirakopoulos, Ilke; Erol Genevois, Mujde

    2015-01-01

    Life Cycle Assessment is a tool to assess, in a systematic way, the environmental aspects and its potential environmental impacts and resources used throughout a product's life cycle. It is widely accepted and considered as one of the most powerful tools to support decision-making processes used in ecodesign and sustainable production in order to learn about the most problematic parts and life cycle phases of a product and to have a projection for future improvements. However, since Life Cycle Assessment is a cost and time intensive method, companies do not intend to carry out a full version of it, except for large corporate ones. Especially for small and medium sized enterprises, which do not have enough budget for and knowledge on sustainable production and ecodesign approaches, focusing only on the most important possible environmental aspect is unavoidable. In this direction, finding the right environmental aspect to work on is crucial for the companies. In this study, a multi-criteria decision-making methodology, Analytic Network Process is proposed to select the most relevant environmental aspect. The proposed methodology aims at providing a simplified environmental assessment to producers. It is applied for a hand blender, which is a member of the Electrical and Electronic Equipment family. The decision criteria for the environmental aspects and relations of dependence are defined. The evaluation is made by the Analytic Network Process in order to create a realistic approach to inter-dependencies among the criteria. The results are computed via the Super Decisions software. Finally, it is observed that the procedure is completed in less time, with less data, with less cost and in a less subjective way than conventional approaches. - Highlights: • We present a simplified environmental assessment methodology to support LCA. • ANP is proposed to select the most relevant environmental aspect. • ANP deals well with the interdependencies between aspects

  16. A Complex Systems Approach to Energy Poverty in sub-Saharan Africa: Nigeria as a Case Study

    Science.gov (United States)

    Chidebell Emordi, Chukwunonso

    Energy poverty is pervasive in sub-Saharan Africa. Nigeria, located in sub-Saharan West Africa, is the world's seventh largest oil exporting country and is a resource-rich nation. It however experiences the same levels of energy poverty as most of its neighboring countries. Attributing this paradox only to corruption or the "Dutch Disease", where one sector booms at the expense of other sectors of the economy, is simplistic and enervates attempts at reform. In addition, data on energy consumption is aggregated at the national level via estimates, disaggregated data is virtually non-existent. Finally, the wave of decentralization of vertically integrated national utilities sweeping the developing world has caught on in sub-Saharan Africa. However, little is known of the economic and social implications of these transitions within the unique socio-technical system of the region's electricity sector, especially as it applies to energy poverty. This dissertation proposes a complex systems approach to measuring and mitigating energy poverty in Nigeria due to its multi-dimensional nature. This is done via a three-fold approach: the first section of the study delves into causation by examining the governance institutions that create and perpetuate energy poverty; the next section proposes a context-specific minimum energy poverty line based on field data collected on energy consumption; and the paper concludes with an indicator-based transition management framework encompassing institutional, economic, social, and environmental themes of sustainable transition within the electricity sector. This work contributes to intellectual discourse on systems-based mitigation strategies for energy poverty that are widely applicable within the sub-Saharan region, as well as adds to the knowledge-base of decision-support tools for addressing energy poverty in its complexity.

  17. An interdisciplinary approach to volcanic risk reduction under conditions of uncertainty: a case study of Tristan da Cunha

    Science.gov (United States)

    Hicks, A.; Barclay, J.; Simmons, P.; Loughlin, S.

    2014-07-01

    The uncertainty brought about by intermittent volcanic activity is fairly common at volcanoes worldwide. While better knowledge of any one volcano's behavioural characteristics has the potential to reduce this uncertainty, the subsequent reduction of risk from volcanic threats is only realised if that knowledge is pertinent to stakeholders and effectively communicated to inform good decision making. Success requires integration of methods, skills and expertise across disciplinary boundaries. This research project develops and trials a novel interdisciplinary approach to volcanic risk reduction on the remote volcanic island of Tristan da Cunha (South Atlantic). For the first time, volcanological techniques, probabilistic decision support and social scientific methods were integrated in a single study. New data were produced that (1) established no spatio-temporal pattern to recent volcanic activity; (2) quantified the high degree of scientific uncertainty around future eruptive scenarios; (3) analysed the physical vulnerability of the community as a consequence of their geographical isolation and exposure to volcanic hazards; (4) evaluated social and cultural influences on vulnerability and resilience; and (5) evaluated the effectiveness of a scenario planning approach, both as a method for integrating the different strands of the research and as a way of enabling on-island decision makers to take ownership of risk identification and management, and capacity building within their community. The paper provides empirical evidence of the value of an innovative interdisciplinary framework for reducing volcanic risk. It also provides evidence for the strength that comes from integrating social and physical sciences with the development of effective, tailored engagement and communication strategies in volcanic risk reduction.

  18. Using sequence stratigraphic approaches in a highly tectonic area: Case study - Nubia (A) sandstone in southwestern Gulf of Suez, Egypt

    Science.gov (United States)

    Attia, Ibrahem; Helal, Iman; El Dakhakhny, Alaa; Aly, Said A.

    2017-12-01

    West Esh El Mallaha area is located west of the Hurghada shoreline. It pertains to the southwestern province of the Gulf of Suez. Nubia (A) sandstone is one of the prolific reservoirs in the western side along the Gulf of Suez area. To enhance further oil production and to develop this reservoir, it is important to gain a clear understanding of the reservoir in terms of its depositional origin. In west Esh El Mallaha area, the understanding of the depositional setting of Nubia (A) is relatively hard due to the limited number of cores. A comprehensive workflow which integrates all geological datasets (electrical logs pattern, the high resolution biostratigraphic analysis, and previous studies) which has been performed for the Nubia (A), enables to recognize different patterns of electrical logs, which are used to define the sequence stratigraphy and systems tracts for Nubia (A). The Lower Nubia (A) is characterized by fining-upward profile and well-developed coarsening-straight profile interpreted as a braided - fluvial facies (lowstand system tract). On the other hand, the upper Nubia (A) is characterized by fining-upward, coarsening-upward, and bell profile interpreted as meandering fluvial to fluvio-dominated delta (transgressive system tract). This study is an approach to build a reliable geological model, and give wide view to evaluate and develop the reservoir in the drilled areas and predict sand distribution in the undrilled areas despite the limited number of cores.

  19. A fast and cost-effective approach to develop and map EST-SSR markers: oak as a case study

    Directory of Open Access Journals (Sweden)

    Cherubini Marcello

    2010-10-01

    Full Text Available Abstract Background Expressed Sequence Tags (ESTs are a source of simple sequence repeats (SSRs that can be used to develop molecular markers for genetic studies. The availability of ESTs for Quercus robur and Quercus petraea provided a unique opportunity to develop microsatellite markers to accelerate research aimed at studying adaptation of these long-lived species to their environment. As a first step toward the construction of a SSR-based linkage map of oak for quantitative trait locus (QTL mapping, we describe the mining and survey of EST-SSRs as well as a fast and cost-effective approach (bin mapping to assign these markers to an approximate map position. We also compared the level of polymorphism between genomic and EST-derived SSRs and address the transferability of EST-SSRs in Castanea sativa (chestnut. Results A catalogue of 103,000 Sanger ESTs was assembled into 28,024 unigenes from which 18.6% presented one or more SSR motifs. More than 42% of these SSRs corresponded to trinucleotides. Primer pairs were designed for 748 putative unigenes. Overall 37.7% (283 were found to amplify a single polymorphic locus in a reference full-sib pedigree of Quercus robur. The usefulness of these loci for establishing a genetic map was assessed using a bin mapping approach. Bin maps were constructed for the male and female parental tree for which framework linkage maps based on AFLP markers were available. The bin set consisting of 14 highly informative offspring selected based on the number and position of crossover sites. The female and male maps comprised 44 and 37 bins, with an average bin length of 16.5 cM and 20.99 cM, respectively. A total of 256 EST-SSRs were assigned to bins and their map position was further validated by linkage mapping. EST-SSRs were found to be less polymorphic than genomic SSRs, but their transferability rate to chestnut, a phylogenetically related species to oak, was higher. Conclusion We have generated a bin map for oak

  20. Implementing a Teaching Approach Based on the Multiple Intelligence Theory in a South African School: A Case Study

    Science.gov (United States)

    Pienaar, H. C.; Nieman, M. M.; Kamper, G. D.

    2011-01-01

    This article reports on the implementation of a teaching approach based on Gardner's theory of multiple intelligences (MI) at a school in the Hammanskraal area in Gauteng, South Africa. The aim was to determine the impact that such an approach would have on teachers, learners and learner performance. This article discusses the implementation…

  1. A CASE STUDY OF LUNTIAN MULTI-PURPOSE COOPERATIVE IN BARANGAY LALAIG, TIAONG, QUEZON, PHILIPPINES: A VERTICAL INTEGRATION APPROACH

    Directory of Open Access Journals (Sweden)

    M.V. Perilla

    2014-10-01

    Full Text Available The Luntian Multi-Purpose Cooperative located in Tiaong, Quezon, Philippines. The Luntian MultiPurposecooperative focuses more on feed production as well as hog fattening. The LMC applied thevertical integration to develop the cooperative. They have their members as their primary costumers of theirfeeds. The cooperative’s business activity includes also meat shop, granting of production loan, microfinance,mobilization of saving deposits, aside from feed milling and hog fattening. Different agencies, industryorganizations and private institutions provide trainings, seminars, assistance, as well as credit for thecooperative.The aims of the study was to determine the present and discuss a noteworthy business issue (sof Luntian Multipurpose Cooperative, evaluate the business environment prevailing at a particular time ofthis case , assess the cooperative’s performance in terms of the four business functions , define the problemrelevant to the business issue(s being studied. The study used primary and secondary data. Primary datawere gathered through interviews with the key personnel, managers, and other informants of the LuntianMultipurpose Cooperative in order to obtain responses regarding the overall status of the cooperative includingits problem and plans. Secondary data were taken from files and documents, especially the history, backgroundinformation and financial statements. Other data were taken through research materials such as book,unpublished special problems and from some government institutions. The recommendation of this researchshowed that Luntian MPC should engage in establishing a communal farm as to become the primary sourceof hybrid piglets that their members would raised. The alternatives solution was establishing a breeding farmthat would ask for initial investment.

  2. Qualitative Case Study Research as Empirical Inquiry

    Science.gov (United States)

    Ellinger, Andrea D.; McWhorter, Rochell

    2016-01-01

    This article introduces the concept of qualitative case study research as empirical inquiry. It defines and distinguishes what a case study is, the purposes, intentions, and types of case studies. It then describes how to determine if a qualitative case study is the preferred approach for conducting research. It overviews the essential steps in…

  3. Metaheuristic Approaches for Solving Truck and Trailer Routing Problems with Stochastic Demands: A Case Study in Dairy Industry

    Directory of Open Access Journals (Sweden)

    Seyedmehdi Mirmohammadsadeghi

    2015-01-01

    Full Text Available Manufacturers and service providers often encounter stochastic demand scenarios. Researchers have, thus far, considered the deterministic truck and trailer routing problem (TTRP that cannot address ubiquitous demand uncertainties and/or other complexities. The purpose of this study is to model the TTRP with stochastic demand (TTRPSD constraints to bring the TTRP model closer to a reality. The model is solved in a reasonable timeframe using data from a large dairy service by administering the multipoint simulated annealing (M-SA, memetic algorithm (MA, and tabu search (TS. A sizeable number of customers whose demands follow the Poisson probability distribution are considered to model and solve the problem. To make the solutions relevant, first, 21 special TTRPSD benchmark instances are modified for this case and then these benchmarks are used in order to increase the validity and efficiency of the aforementioned algorithms and to show the consistency of the results. Also, the solutions have been tested using sensitivity analysis to understand the effects of the parameters and to make a comparison between the best results obtained by three algorithms and sensitivity analysis. Since the differences between the results are insignificant, the algorithms are found to be appropriate and relevant for solving real-world TTRPSD problem.

  4. A Risk Analysis Approach to Prioritizing Epidemics: Ebola Virus Disease in West Africa as a Case Study.

    Science.gov (United States)

    Ajisegiri, Whenayon Simeon; Chughtai, Abrar Ahmad; MacIntyre, C Raina

    2018-03-01

    The 2014 Ebola virus disease (EVD) outbreak affected several countries worldwide, including six West African countries. It was the largest Ebola epidemic in the history and the first to affect multiple countries simultaneously. Significant national and international delay in response to the epidemic resulted in 28,652 cases and 11,325 deaths. The aim of this study was to develop a risk analysis framework to prioritize rapid response for situations of high risk. Based on findings from the literature, sociodemographic features of the affected countries, and documented epidemic data, a risk scoring framework using 18 criteria was developed. The framework includes measures of socioeconomics, health systems, geographical factors, cultural beliefs, and traditional practices. The three worst affected West African countries (Guinea, Sierra Leone, and Liberia) had the highest risk scores. The scores were much lower in developed countries that experienced Ebola compared to West African countries. A more complex risk analysis framework using 18 measures was compared with a simpler one with 10 measures, and both predicted risk equally well. A simple risk scoring system can incorporate measures of hazard and impact that may otherwise be neglected in prioritizing outbreak response. This framework can be used by public health personnel as a tool to prioritize outbreak investigation and flag outbreaks with potentially catastrophic outcomes for urgent response. Such a tool could mitigate costly delays in epidemic response. © 2017 The Authors Risk Analysis published by Wiley Periodicals, Inc. on behalf of Society for Risk Analysis.

  5. Tumor Molecular Profiling for an Individualized Approach to the Treatment of Hepatocellular Carcinoma: A Patient Case Study

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    Kristine Posadas

    2018-04-01

    Full Text Available Hepatocellular carcinoma (HCC is increasing in incidence, and the associated mortality rate remains among the highest. For advanced HCC, sorafenib has been shown to slightly prolong survival, and regorafenib and nivolumab, both recently approved by the United States Food and Drug Administration (FDA, may produce clinical benefits to a limited extent. Systemic chemotherapy has been shown to produce a modest response, but there is no clinically valid biomarker that can be used to predict which patients may benefit. In this case study, we present two patients with metastatic HCC, they received systemic treatment using capecitabine, oxaliplatin, and either bevacizumab or sorafenib. The tumor response to treatment was determined by the progression-free survival (PFS. Molecular profiling of the tumors showed differential expression of biochemical markers and different mutational status of the TP53 and β-catenin (CTNNB1 genes. We hypothesize that the PFS correlates with the tumor molecular profiles, which may be predictive of the therapeutic response to systemic chemotherapy. Further investigation is indicated to correlate tumor biomarkers and treatment responses, with the objective of personalizing the therapies for patients with advanced HCC.

  6. Qualitative case studies of professional-level workers with traumatic brain injuries: A contextual approach to job accommodation and retention.

    Science.gov (United States)

    Roessler, Richard T; Rumrill, Phillip D; Rumrill, Stuart P; Minton, Deborah L; Hendricks, Deborah J; Sampson, Elaine; Stauffer, Callista; Scherer, Marcia J; Nardone, Amanda; Leopold, Anne; Jacobs, Karen; Elias, Eileen

    2017-09-14

    Traumatic brain injury (TBI) is a multi-systemic disability that causes a wide range of difficulties with personal and social functioning. Four individuals with TBI participated in an evaluation of barriers to their continued employment following graduation from college. A trained interviewer completed the Work Experience Survey (WES) in teleconsultation sessions with each participant. Researchers applied a qualitative case study research design. Participants reported a wide range of difficulties in performing essential functions of their jobs (3 to 24) that have the potential to significantly affect their productivity. Career mastery problems reflected outcomes associated with TBI such as 'believing that others think I do a good job' and 'having the resources (e.g., knowledge, tools, supplies, and equipment) needed to do the job.' Indicative of their wish to continue their current employment, participants reported high levels of job satisfaction. The WES is a cost-effective needs assessment tool to aid health and rehabilitation professionals in providing on-the-job supports to workers with TBI.

  7. Similarities of lean manufacturing approaches implementation in SMEs towards the success: Case study in the automotive component industry

    Directory of Open Access Journals (Sweden)

    Rose A.N.M.

    2017-01-01

    Full Text Available Nowadays, manufacturing companies are striving for a better system like lean manufacturing (LM. The primary objective of LM is to identify and eliminate wastes. LM can be applied successfully in all industries providing a full understanding of lean ingredients i.e. concept, principles, and practices. There are a lot of practices which are necessary to be implemented in order to gain full benefits of LM. However, small and medium enterprises (SMEs are lack of knowledge in LM and facing difficulties to adopt all of the LM principles. Therefore, it is necessary to the researchers to come out with a simple guideline for LM implementation. The objective of this paper is to explore the journey of LM implementation including preliminary, in process and post of LM. This research was conducted through multi-case study research. There were four SMEs and two large companies. The gathered information shows that the preliminary stage of LM implementation is similar to each other including large companies. The result shows SMEs still have a potential to success in LM. This finding might give an opportunity to SMEs to prepare the basis for LM implementation effectively. As a result, SMEs able compete in the competitive global marketplace and strive for world class performance through implementation of LM.

  8. A Bag of Concepts Approach for Biomedical Document Classification Using Wikipedia Knowledge*. Spanish-English Cross-language Case Study.

    Science.gov (United States)

    Mouriño-García, Marcos A; Pérez-Rodríguez, Roberto; Anido-Rifón, Luis E

    2017-10-26

    The ability to efficiently review the existing literature is essential for the rapid progress of research. This paper describes a classifier of text documents, represented as vectors in spaces of Wikipedia concepts, and analyses its suitability for classification of Spanish biomedical documents when only English documents are available for training. We propose the cross-language concept matching (CLCM) technique, which relies on Wikipedia interlanguage links to convert concept vectors from the Spanish to the English space. The performance of the classifier is compared to several baselines: a classifier based on machine translation, a classifier that represents documents after performing Explicit Semantic Analysis (ESA), and a classifier that uses a domain-specific semantic annotator (MetaMap). The corpus used for the experiments (Cross-Language UVigoMED) was purpose-built for this study, and it is composed of 12,832 English and 2,184 Spanish MEDLINE abstracts. The performance of our approach is superior to any other state-of-the art classifier in the benchmark, with performance increases up to: 124% over classical machine translation, 332% over MetaMap, and 60 times over the classifier based on ESA. The results have statistical significance, showing p-values knowledge mined from Wikipedia to represent documents as vectors in a space of Wikipedia concepts and translating vectors between language-specific concept spaces, a cross-language classifier can be built, and it performs better than several state-of-the-art classifiers.

  9. A possible approach to assess acidification of meat starter cultures: a case study from some wild strains of Lactobacillus plantarum.

    Science.gov (United States)

    Speranza, Barbara; Bevilacqua, Antonio; Corbo, Maria Rosaria; Sinigaglia, Milena

    2017-07-01

    The performances of four autochthonous isolates of Lactobacillus plantarum were assessed to study the most important variables acting on acidification and to propose a possible step-by-step approach for the validation at laboratory scale. This main topic was addressed through three intermediate steps: (1) evaluation of acidification in liquid and solid media, as a function of salt, nitrites, nitrates, lactose, pepper and temperature; (2) assessing acidification in a pork-meat preparation; and (3) designing a protocol to improve the performances at sub-optimal temperatures. The concentration of the ingredients and the temperature were combined through a 3 k-p Fractional Factorial Design. Acidification and viable count were assessed and modelled through a multi-factorial ANOVA. In model systems acidification was affected by lactose and was maximum (ΔpH of ca. 2.8-3.0) in the combinations containing 0.4% lactose, 250 mg kg -1 nitrates or 150 mg kg -1 nitrites, 5% salt, and at 30 °C. Solid media caused a higher acidification. In the pork meat preparation, the effect of salt and nitrites was significant. At 10 °C the strains could not reduce pH, but this ability could be induced using an adaptation step. Acidification was affected by lactose in the model system, whereas in meat preparation the other variables were significant. In addition, a protocol to improve acidification at 10 °C was optimised. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry.

  10. Comparison of Metabolomics Approaches for Evaluating the Variability of Complex Botanical Preparations: Green Tea (Camellia sinensis) as a Case Study.

    Science.gov (United States)

    Kellogg, Joshua J; Graf, Tyler N; Paine, Mary F; McCune, Jeannine S; Kvalheim, Olav M; Oberlies, Nicholas H; Cech, Nadja B

    2017-05-26

    A challenge that must be addressed when conducting studies with complex natural products is how to evaluate their complexity and variability. Traditional methods of quantifying a single or a small range of metabolites may not capture the full chemical complexity of multiple samples. Different metabolomics approaches were evaluated to discern how they facilitated comparison of the chemical composition of commercial green tea [Camellia sinensis (L.) Kuntze] products, with the goal of capturing the variability of commercially used products and selecting representative products for in vitro or clinical evaluation. Three metabolomic-related methods-untargeted ultraperformance liquid chromatography-mass spectrometry (UPLC-MS), targeted UPLC-MS, and untargeted, quantitative 1 HNMR-were employed to characterize 34 commercially available green tea samples. Of these methods, untargeted UPLC-MS was most effective at discriminating between green tea, green tea supplement, and non-green-tea products. A method using reproduced correlation coefficients calculated from principal component analysis models was developed to quantitatively compare differences among samples. The obtained results demonstrated the utility of metabolomics employing UPLC-MS data for evaluating similarities and differences between complex botanical products.

  11. A critical spare part inventory control based on hazard function approach: A case study in a garment company

    Science.gov (United States)

    Melinda, Intan Dewi; Jauhari, Wakhid Ahmad

    2018-02-01

    Spare part procurement is a complex issue and requires an accurate analysis. Stock outs of spare part can leads a great impact on production. Therefore, it is necessary to design the inventory control of spare parts that guarantee the availability of spare parts needed for supporting the maintenance activity. This paper studies the inventory policy for sewing machine spare part using hazard function to approximate the demand. Hazard function is the indicator of the effect of ageing on the reliability of the system. It quantifies the risk of failure as the age of the system increases. We use a continuous review policy based on Hadley Within Approach to calculate the optimum inventory level for critical spare parts. There are four spare parts categorized as critical spare parts, which are needle plate, feed dog, rotary and binder attachment. The optimal ordering quantity for needle plate, feed, rotary and binder attachment are 5 units, 17 units, 5 units, and 9 units, respectively and the reorder point are 2 units, 1 unit, 2 units and 1 unit, respectively. Finally, the service level achieved by the proposed policy is in a range of 95.91%-97.93%, which indicates that the inventory level of spare parts can be used to support the required parts in the maintenance activity.

  12. Implementation of quality by design approach in manufacturing process optimization of dry granulated, immediate release, coated tablets - a case study.

    Science.gov (United States)

    Teżyk, Michał; Jakubowska, Emilia; Milanowski, Bartłomiej; Lulek, Janina

    2017-10-01

    The aim of this study was to optimize the process of tablets compression and identification of film-coating critical process parameters (CPPs) affecting critical quality attributes (CQAs) using quality by design (QbD) approach. Design of experiment (DOE) and regression methods were employed to investigate hardness, disintegration time, and thickness of uncoated tablets depending on slugging and tableting compression force (CPPs). Plackett-Burman experimental design was applied to identify critical coating process parameters among selected ones that is: drying and preheating time, atomization air pressure, spray rate, air volume, inlet air temperature, and drum pressure that may influence the hardness and disintegration time of coated tablets. As a result of the research, design space was established to facilitate an in-depth understanding of existing relationship between CPPs and CQAs of intermediate product (uncoated tablets). Screening revealed that spray rate and inlet air temperature are two most important factors that affect the hardness of coated tablets. Simultaneously, none of the tested coating factors have influence on disintegration time. The observation was confirmed by conducting film coating of pilot size batches.

  13. The Progressive Approach to EMDR Group Therapy for Complex Trauma and Dissociation: A Case-Control Study

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    Ana I. Gonzalez-Vazquez

    2018-02-01

    Full Text Available Eye Movement Desensitization and Reprocessing is a psychotherapeutic approach with recognized efficiency in treating post-traumatic stress disorder (PTSD, which is being used and studied in other psychiatric diagnoses partially based on adverse and traumatic life experiences. Nevertheless, there is not enough empirical evidence at the moment to support its usefulness in a diagnosis other than PTSD. It is commonly accepted that the use of EMDR in severely traumatized patients requires an extended stabilization phase. Some authors have proposed integrating both the theory of structural dissociation of the personality and the adaptive information processing model guiding EMDR therapy. One of these proposals is the Progressive Approach. Some of these EMDR procedures will be evaluated in a group therapy format, integrating them along with emotional regulation, dissociation, and trauma-oriented psychoeducational interventions. Patients presenting a history of severe traumatization, mostly early severe and interpersonal trauma, combined with additional significant traumatizing events in adulthood were included. In order to discriminate the specific effect of EMDR procedures, two types of groups were compared: TAU (treatment as usual: psychoeducational intervention only vs. TAU+EMDR (the same psychoeducational intervention plus EMDR specific procedures. In pre-post comparison, more variables presented positive changes in the group including EMDR procedures. In the TAU+EMDR group, 4 of the 5 measured variables presented significant and positive changes: general health (GHQ, general satisfaction (Schwartz, subjective well-being, and therapy session usefulness assessment. On the contrary, only 2 of the 5 variables in the TAU group showed statistically significant changes: general health (GHQ, and general satisfaction (Schwartz. Regarding post-test inter-group comparison, improvement in subjective well-being was related to belonging to the group that

  14. Identifying Effective Design Approaches to Allocate Genotypes in Two-Phase Designs: A Case Study in Pelargonium zonale

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    Heike Molenaar

    2018-01-01

    Full Text Available Robust phenotypic data allow adequate statistical analysis and are crucial for any breeding purpose. Such data is obtained from experiments laid out to best control local variation. Additionally, experiments frequently involve two phases, each contributing environmental sources of variation. For example, in a former experiment we conducted to evaluate production related traits in Pelargonium zonale, there were two consecutive phases, each performed in a different greenhouse. Phase one involved the propagation of the breeding strains to obtain the stem cutting count, and phase two involved the assessment of root formation. The evaluation of the former study raised questions regarding options for improving the experimental layout: (i Is there a disadvantage to using exactly the same design in both phases? (ii Instead of generating a separate layout for each phase, can the design be optimized across both phases, such that the mean variance of a pair-wise treatment difference (MVD can be decreased? To answer these questions, alternative approaches were explored to generate two-phase designs either in phase-wise order (Option 1 or across phases (Option 2. In Option 1 we considered the scenarios (i using in both phases the same experimental design and (ii randomizing each phase separately. In Option 2, we considered the scenarios (iii generating a single design with eight replicates and splitting these among the two phases, (iv separating the block structure across phases by dummy coding, and (v design generation with optimal alignment of block units in the two phases. In both options, we considered the same or different block structures in each phase. The designs were evaluated by the MVD obtained by the intra-block analysis and the joint inter-block–intra-block analysis. The smallest MVD was most frequently obtained for designs generated across phases rather than for each phase separately, in particular when both phases of the design were

  15. MODIFIED APPROACH FOR SITE SELECTION OF UNWANTED RADIOACTIVE SEALED SOURCES DISPOSAL IN ARID COUNTRIES (CASE STUDY - EGYPT)

    International Nuclear Information System (INIS)

    ABDEL AZIZ, M.A.H.; COCHRAN, J.R.

    2008-01-01

    The aim of this study is to present a systematic methodology for siting of radioactive sealed sources disposal in arid countries and demonstrate the use of this methodology in Egypt. Availing from the experience gained from the greater confinement disposal (GCD) boreholes in Nevada, USA, the IAEA's approach for siting of near disposal was modified to fit the siting of the borehole disposal which suits the unwanted radioactive sealed sources. The modifications are represented by dividing the surveyed area into three phases; the exclusion phase in which the areas that meet exclusion criteria should be excluded, the site selection phase in which some potential sites that meet the primary criteria should be candidate and the preference stage in which the preference between the potential candidate sites should be carried out based on secondary criteria to select one or two sites at most. In Egypt, a considerable amount of unwanted radioactive sealed sources wastes have accumulated due to the peaceful uses of radio-isotopes.Taking into account the regional aspects and combining of the proposed developed methodology with geographic information system (GIS), the Nile Delta and its valley, the Sinai Peninsula and areas of historical heritage value are excluded from our concern as potential areas for radioactive waste disposal. Using the primary search criteria, some potential sites south Kharga, the Great Sand Sea, Gilf El-Kebear and the central part of the eastern desert have been identified as candidate areas meeting the primary criteria of site selection. More detailed studies should be conducted taking into account the secondary criteria to prefer among the above sites and select one or two sites at most

  16. An iterative and integrative approach to modeling the morphological alterations in backwater condition: A case study of Darby Creek, PA

    Science.gov (United States)

    Hosseiny, S. M. H.; Smith, V.

    2017-12-01

    Darby Creek is an urbanized highly flood-prone watershed in Metro-Philadelphia, PA. The floodplain and the main channel are composed of alluvial sediment and are subject to frequent geomorphological changes. The lower part of the channel is within the coastal zone, subjugating the flow to a backwater condition. This study applies a multi-disciplinary approach to modeling the morphological alteration of the creek and floodplain in presence of the backwater using an iteration and integration of combined models. To do this, FaSTMECH (a two-dimensional quasi unsteady flow solver) in International River Interface Cooperative software (iRIC) is coupled with a 1-dimensional backwater model to calculate hydraulic characteristics of the flow over a digital elevation model of the channel and floodplain. One USGS gage at the upstream and two NOAA gages at the downstream are used for model validation. The output of the model is afterward used to calculate sediment transport and morphological changes over the domain through time using an iterative process. The updated elevation data is incorporated in the hydraulic model again to calculate the velocity field. The calculations continue reciprocally over discrete discharges of the hydrograph until the flood attenuates and the next flood event occurs. The results from this study demonstrate how to incorporate bathymetry and flow data to model floodplain evolution in the backwater through time, and provide a means to better understanding the dynamics of the floodplain. This work is not only applicable to river management, but also provides insight to the geoscience community concerning the development of landscapes in the backwater.

  17. Change impact analysis of indirect goal relations: comparison of NFR and TROPOS approaches based on industrial case study

    NARCIS (Netherlands)

    Teka, A.; Condori-Fernandez, Nelly; Ivanov, Ivan; Quartel, Dick; Engelsman, W.; Mussbacher, G.; Araujo, J.; Sanchez, P.

    Along with recent trends in using goal-oriented approaches for requirements engineering and system development activities, various techniques for managing adaptable stakeholder goals and requirements are proposed and used by the software engineering industry. Enterprise Architecture (EA) models

  18. Using risk-tracing snowball approach to increase HIV case detection among high-risk populations in Cambodia: an intervention study.

    Science.gov (United States)

    Chhim, Srean; Macom, John; Pav, Chettana; Nim, Nirada; Yun, Phearun; Seng, Sopheap; Chhim, Kolab; Tuot, Sovannary; Yi, Siyan

    2017-10-18

    Early HIV diagnosis and initiation onto antiretroviral therapy may prevent ongoing spread of HIV. Risk Tracing Snowball Approach (RTSA) has been shown to be effective in detecting new HIV cases in other settings. The main objective of this study is to evaluate the effectiveness of RTSA in increasing the rate of newly identified HIV cases among high-risk populations. Our second objective was to evaluate the effectiveness of RTSA, as compared to the walk-in group, in increasing the number of HIV tests and early case detection. This study was conducted from April 1 to September 30, 2016 at two NGO clinics in Phnom Penh, Cambodia. Respondent driven sampling method was adapted to develop RTSA to reach high-risk populations, including key populations and the general population who have social connections with key populations. Bivariate and multivariate logistic regression analyses were conducted. During the implementation period, 721 clients walked in for HIV testing (walk-in group), and all were invited to be seeds. Of the invited clients, 36.6% agreed to serve as seeds. Throughout the implementation, 6195 coupons were distributed to seeds or recruiters, and resulted in 1572 clients visiting the two clinics with coupons (RTSA group), for a coupon return rate of 25.3%. The rate of newly identified HIV cases among the RTSA group was significantly lower compared to that in walk-in group. However, the highest number of newly identified HIV cases was found during the implementation period, compared to both pre- and post-implementation period. Although statistically not significant, the mean CD4 count of newly identified HIV cases detected through RTSA was almost 200 cells/mm3 higher than that in the walk-in group. Although the rate of newly identified HIV cases among the RTSA group was lower than that in the walk-in group, the inclusion of RTSA in addition to the traditional walk-in method boosted new HIV case detection in the two participating clinics. A higher mean CD4

  19. Ranking of Companies based on TOPSIS-DEA Approach Methods (Case Study of Cement Industry in Tehran Stock Exchange

    Directory of Open Access Journals (Sweden)

    Ali Mansory

    2014-08-01

    Full Text Available Ranking options has always been the main issue for managers. There are a lot of qualitative and quantitative approaches for ranking. However most of the approaches for separating and ranking corporations in stock market are less reliable and the results obtained will be invalid. While the evaluation obtained merely through qualitative or quantitative approaches alone, the advantages of integration will be ignored. Thus logically the efficiency of result will be questionable. Thus in this paper the advantages of qualitative and quantitative approaches are integrated which in turn bring about more precision in values of input and output indices. Hence in this paper the approaches, TOPSIS & DEA, have been introduced to rate active companies in cement industry accepted in Tehran stock market. The approach adopted in this paper is applicable and carried out during 2006-2011 and the population of the research includes accepted companies in stock market in cement industry (28 companies and at the end a precise ranking of the companies is presented by integrattive techniques.

  20. COORDINATE TRANSFORMATION USING FEATHERSTONE AND VANÍČEK PROPOSED APPROACH - A CASE STUDY OF GHANA GEODETIC REFERENCE NETWORK

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    Yao Yevenyo Ziggah

    2017-03-01

    Full Text Available Most developing countries like Ghana are yet to adopt the geocentric datum for its surveying and mapping purposes. It is well known and documented that non-geocentric datums based on its establishment have more distortions in height compared with satellite datums. Most authors have argued that combining such height with horizontal positions (latitude and longitude in the transformation process could introduce unwanted distortions to the network. This is because the local geodetic height in most cases is assumed to be determined to a lower accuracy compared with the horizontal positions. In the light of this, a transformation model was proposed by Featherstone and Vaníček (1999 which avoids the use of height in both global and local datums in coordinate transformation. It was confirmed that adopting such a method reduces the effect of distortions caused by geodetic height on the transformation parameters estimated. Therefore, this paper applied Featherstone and Vaníček (FV model for the first time to a set of common points coordinates in Ghana geodetic reference network. The FV model was used to transform coordinates from global datum (WGS84 to local datum (Accra datum. The results obtained based on the Root Mean Square Error (RMSE and Mean Absolute Error (MAE in both Eastings and Northings were satisfactory. Thus, a RMSE value of 0.66 m and 0.96 m were obtained for the Eastings and Northings while 0.76 m and 0.73 m were the MAE values achieved. Also, the FV model attained a transformation accuracy of 0.49 m. Hence, this study will serve as a preliminary investigation in avoiding the use of height in coordinate transformation within Ghana’s geodetic reference network.

  1. Data-Driven Approaches for Computation in Intelligent Biomedical Devices: A Case Study of EEG Monitoring for Chronic Seizure Detection

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    Naveen Verma

    2011-04-01

    Full Text Available Intelligent biomedical devices implies systems that are able to detect specific physiological processes in patients so that particular responses can be generated. This closed-loop capability can have enormous clinical value when we consider the unprecedented modalities that are beginning to emerge for sensing and stimulating patient physiology. Both delivering therapy (e.g., deep-brain stimulation, vagus nerve stimulation, etc. and treating impairments (e.g., neural prosthesis requires computational devices that can make clinically relevant inferences, especially using minimally-intrusive patient signals. The key to such devices is algorithms that are based on data-driven signal modeling as well as hardware structures that are specialized to these. This paper discusses the primary application-domain challenges that must be overcome and analyzes the most promising methods for this that are emerging. We then look at how these methods are being incorporated in ultra-low-energy computational platforms and systems. The case study for this is a seizure-detection SoC that includes instrumentation and computation blocks in support of a system that exploits patient-specific modeling to achieve accurate performance for chronic detection. The SoC samples each EEG channel at a rate of 600 Hz and performs processing to derive signal features on every two second epoch, consuming 9 μJ/epoch/channel. Signal feature extraction reduces the data rate by a factor of over 40×, permitting wireless communication from the patient’s head while reducing the total power on the head by 14×.

  2. An innovative approach to the safety evaluation of natural products: cranberry (Vaccinium macrocarpon Aiton) leaf aqueous extract as a case study.

    Science.gov (United States)

    Booth, Nancy L; Kruger, Claire L; Wallace Hayes, A; Clemens, Roger

    2012-09-01

    Assessment of safety for a food or dietary ingredient requires determination of a safe level of ingestion compared to the estimated daily intake from its proposed uses. The nature of the assessment may require the use of different approaches, determined on a case-by-case basis. Natural products are chemically complex and challenging to characterize for the purpose of carrying out a safety evaluation. For example, a botanical extract contains numerous compounds, many of which vary across batches due to changes in environmental conditions and handling. Key components integral to the safety evaluation must be identified and their variability established to assure that specifications are representative of a commercial product over time and protective of the consumer; one can then extrapolate the results of safety studies on a single batch of product to other batches that are produced under similar conditions. Safety of a well-characterized extract may be established based on the safety of its various components. When sufficient information is available from the public literature, additional toxicology testing is not necessary for a safety determination on the food or dietary ingredient. This approach is demonstrated in a case study of an aqueous extract of cranberry (Vaccinium macrocarpon Aiton) leaves. Copyright © 2012. Published by Elsevier Ltd.

  3. A statistical approach for estimating fish diet compositions from multiple, data sources: Gulf of California case study.

    Science.gov (United States)

    Ainsworth, Cameron H; Kaplan, Isaac C; Levin, Phillip S; Mangel, Marc

    2010-12-01

    Trophic ecosystem models are one promising tool for providing ecosystem-based management advice. Diet and interaction rate parameters are critical in defining the behavior of these models, and will greatly influence any predictions made in response to management perturbations. However, most trophic ecosystem models must rely on a patchwork of data availability and must contend with knowledge gaps and poor quantification of uncertainty. Here we present a statistical method for combining diet information from field samples and literature to describe trophic relationships at the level of functional groups. In this example, original fieldwork in the northern Gulf of California, Mexico, provides gut content data for targeted and untargeted fish species. The field data are pooled with diet composition information from FishBase, an online data repository. Diet information is averaged across stomachs to represent an average predator, and then the data are bootstrapped to generate likelihood profiles. These are fit to a Dirichlet function, and from the resulting marginal distributions, maximum-likelihood estimates are generated with confidence intervals representing the likely contribution to diet for each predator-prey combination. We characterize trophic linkages into two broad feeding guilds, pelagic and demersal feeders, and explore differentiation within those guilds. We present an abbreviated food web for the northern Gulf of California based on the results of this study. This food web will form the basis of a trophic dynamic model. Compared to the common method of averaging diet compositions across predators, this statistical approach is less influenced by the presence of long tails in the distributions, which correspond to rare feeding events, and is therefore better suited to small data sets.

  4. An integrated approach to the assessment of the eastern Gulf of Finland health: A case study of coastal habitats

    Science.gov (United States)

    Berezina, Nadezhda A.; Gubelit, Yulia I.; Polyak, Yulia M.; Sharov, Andrey N.; Kudryavtseva, Valentina A.; Lubimtsev, Vasily A.; Petukhov, Vasily A.; Shigaeva, Tatyana D.

    2017-07-01

    Eutrophication and chemical pollution are typical threats to the ecosystem of the Gulf of Finland. This paper aims to make a comprehensive assessment of the environmental status of coastal habitats in the easternmost Gulf of Finland (Neva River estuary) by using different physical, chemical and biotic variables to find cost-effective indicators for further monitoring. During summers of 2014 and 2015 we measured water salinity, phosphorus (eutrophication marker), biomass of harmful filamentous macroalgae (coastline hypoxia inductor), sediment hazardous substances (trace metals, polycyclic aromatic hydrocarbons) and other concomitant characters at 12 sites in the gulf. Also, we analyzed responses of the phytoplankton and benthic organisms, including metal-tolerant and hydrocarbon-oxidizing bacteria, meio- and macrofauna, to these factors. We compared the indicative sensitivity and efficiency of several well-known biotic indices and methods, including a Saprobity system (basing on phytoplankton), Raffaelli and Mason index (meiobenthos), and two macrobenthic derived indices (Goodnight-Whitley Index and Benthic Quality Index). Also, we applied a new index - the embryo malformation frequency in benthic amphipods. To estimate the level of bottom hypoxia induced by the macroalgae blooms, we measured the algal cover and thickness of the algal mats. To verify our assessment, we tested correlations between all used variables. Biotic communities of these areas are subjected to high phosphorus and macroalgae blooms, toxic pollution, water salinity and other factors. We concluded that environmental state of coastal habitats at several southern sites (in Koporskaya Bay and near the developing port Bronka) and near port Primorsk in the north was bad, while the state of the rest of sites was moderate or good. The integrated approach for the assessment may be recommended for monitoring programs as an important tool for studying human-mediated and other effects on brackishwater

  5. Spatial Approach of Climate Risk Assessment and Uncertainty: A Case Study of Heat Wave Risk in Seoul

    Science.gov (United States)

    Ahn, S.; Lee, D. K.; Jeong, W.

    2016-12-01

    As climate change continuously reaches new climaxes, it is aggravating many climate extremes. Urban heat island effect (UHI) is one of them. It occurs in cities with sealed surfaces and building canyons, which make changes in storage, radiative and turbulent heat flux that make cities warmer than surrounding areas. However, applying adequate policies at the right place can attenuate the impacts of UHI. Therefore, heat wave risk assessment is important in the sense that it helps decision makers set priority in targets of application. Seoul is highly urbanized capital of South Korea. It is suffering from increasing heat wave days and tropical nights every year. More than 10 million residents are exposed to heat extremes and measures should be taken. Therefore, heat wave risk assessment of Seoul should be done in advance. While, risk assessment contains uncertainty; from variables to assessment procedure. However, there is no standardized assessment methodology. A fuzzy logic, introduced by Zadeh in 1965, is applied in quantifying these uncertainties. We fuzzified indices for assessing heat wave risk with threshold values. And indices were aggregated step by step with fuzzy operators, which make up "vulnerability" and "climate exposure". Vulnerability and climate exposure are further combined with fuzzy operator to derive complete heat wave risk assessment map. As a result, we expressed spatial distribution of UHI risk. Districts lying in the central area of the city showed higher risk than in marginal areas. In addition, hierarchic structured approach of assessing risk in this study makes it easy to track key variables of risk, therefore, giving decision makers insights to help their application of adaptation policies.

  6. Regional risk assessment approaches to land planning for industrial polluted areas in China: the Hulunbeier region case study.

    Science.gov (United States)

    Li, Daiqing; Zhang, Chen; Pizzol, Lisa; Critto, Andrea; Zhang, Haibo; Lv, Shihai; Marcomini, Antonio

    2014-04-01

    The rapid industrial development and urbanization processes that occurred in China over the past 30years has increased dramatically the consumption of natural resources and raw materials, thus exacerbating the human pressure on environmental ecosystems. In result, large scale environmental pollution of soil, natural waters and urban air were recorded. The development of effective industrial planning to support regional sustainable economy development has become an issue of serious concern for local authorities which need to select safe sites for new industrial settlements (i.e. industrial plants) according to assessment approaches considering cumulative impacts, synergistic pollution effects and risks of accidental releases. In order to support decision makers in the development of efficient and effective regional land-use plans encompassing the identification of suitable areas for new industrial settlements and areas in need of intervention measures, this study provides a spatial regional risk assessment methodology which integrates relative risk assessment (RRA) and socio-economic assessment (SEA) and makes use of spatial analysis (GIS) methodologies and multicriteria decision analysis (MCDA) techniques. The proposed methodology was applied to the Chinese region of Hulunbeier which is located in eastern Inner Mongolia Autonomous Region, adjacent to the Republic of Mongolia. The application results demonstrated the effectiveness of the proposed methodology in the identification of the most hazardous and risky industrial settlements, the most vulnerable regional receptors and the regional districts which resulted to be the most relevant for intervention measures since they are characterized by high regional risk and excellent socio-economic development conditions. Copyright © 2013 Elsevier Ltd. All rights reserved.

  7. Comparison of approaches to estimate confidence intervals of post-test probabilities of diagnostic test results in a nested case-control study

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    van Zaane Bas

    2012-10-01

    Full Text Available Abstract Background Nested case–control studies become increasingly popular as they can be very efficient for quantifying the diagnostic accuracy of costly or invasive tests or (biomarkers. However, they do not allow for direct estimation of the test’s predictive values or post-test probabilities, let alone for their confidence intervals (CIs. Correct estimates of the predictive values itself can easily be obtained using a simple correction by the (inverse sampling fractions of the cases and controls. But using this correction to estimate the corresponding standard error (SE, falsely increases the number of patients that are actually studied, yielding too small CIs. We compared different approaches for estimating the SE and thus CI of predictive values or post-test probabilities of diagnostic test results in a nested case–control study. Methods We created datasets based on a large, previously published diagnostic study on 2 different tests (D-dimer test and calf difference test with a nested case–control design. We compared six different approaches; the approaches were: 1. the standard formula for the SE of a proportion, 2. adaptation of the standard formula with the sampling fraction, 3. A bootstrap procedure, 4. A approach, which uses the sensitivity, the specificity and the prevalence, 5. Weighted logistic regression, and 6. Approach 4 on the log odds scale. The approaches were compared with respect to coverage of the CI and CI-width. Results The bootstrap procedure (approach 3 showed good coverage and relatively small CI widths. Approaches 4 and 6 showed some undercoverage, particularly for the D-dimer test with frequent positive results (positive results around 70%. Approaches 1, 2 and 5 showed clear overcoverage at low prevalences of 0.05 and 0.1 in the cohorts for all case–control ratios. Conclusion The results from our study suggest that a bootstrap procedure is necessary to assess the confidence interval for the predictive

  8. Evaluating the learning experience of Undergraduate Entrepreneurship students exposed to an unconventional teaching approach: A South African Case Study

    Directory of Open Access Journals (Sweden)

    Retha Strydom

    2009-12-01

    Full Text Available At the University of Pretoria in South Africa, the teaching personnel decided to implement, in addition to the conventional teaching approach, an unconventional approach towards teaching entrepreneurship. The approach is unconventional in the sense that it differs from the norm or standard classroom teaching. The third-year entrepreneurship course is enriched with an assignment to start and grow an actual business. The purpose of this assignment is not only the practical application of the theory taught, but also to provide an opportunity for the student to start a business in a protected environment in order to break down any psychological barriers such as fear of failure. The lecturer guides the students through the entrepreneurial process, from finding an idea to organising the business. This paper evaluates the learning experience of the students exposed to the unconventional teaching approach. Preliminary observations suggest that the students acquired business skills and knowledge about the entrepreneurial process and created potentially sustainable, profitable business ventures in the class situation, despite coming from different fields of reference and different syllabi. This would seem to suggest that the practical teaching approach towards entrepreneurial learning created the conditions for these achievements. Key words and phrases: entrepreneurial education, entrepreneurial learning, innovative learning methods, student business ventures, start-ups

  9. The ILO and the Latin American dictatorships: an introductory approach to the study of the Case 842 against Argentina

    Directory of Open Access Journals (Sweden)

    Luciana Zorzoli

    2017-05-01

    Full Text Available This article explores the Case 842 opened in March 1976 at the offices of the International Labour Organization (ILO, in Switzerland, against the Argentinean military government for freedom of association violations. The materials collected in the Case, because of its exceptional richness, make it an invaluable source for understanding both the international actions of the so-called PRN and its relations with the Argentinean trade unions' leadership, the internal and external oppositions and the ILO. Focusing first on the complaints received by the Organization, secondly, on the Argentinean responses plus the strategy deployed by the PRN and its civil allies and finally on the actions undertaken by the ILO, we will review the dynamics of the Case and demonstrate that important questions remain open.

  10. Do Active Learning Approaches in Recitation Sections Improve Student Performance? A Case Study from an Introductory Mechanics Course

    Science.gov (United States)

    Tobin, R. G.

    2018-01-01

    Abundant research leaves little question that pedagogical approaches involving active student engagement with the material, and opportunities for student-to-student discussions, lead to much better learning outcomes than traditional instructor-led, expository instructional formats, in physics and in many other fields. In introductory college physics classes, some departments have departed radically from conventional lecture-recitation-laboratory course structures, but many, including my own, retain the basic format of large-group classroom sessions (lectures) supplemented by smaller-group meetings focused on problem solving (recitations) and separate laboratory meetings. Active student engagement in the lectures is encouraged through approaches such as Peer Instruction and Interactive Lecture Demonstrations, and these approaches have been demonstrably successful.

  11. Case study on the influence of kinematic hardening within a parameter-free and non-invasive form finding approach

    Directory of Open Access Journals (Sweden)

    Landkammer Philipp

    2016-01-01

    Full Text Available Inverse form finding – as a type of shape optimization – aims in determining the optimal preform design of a workpiece for a specific forming process, whereby the desired target geometry is known. Recently, a novel parameter-free and heuristic approach was developed to tackle this nonlinear optimization problem. Benchmark tests already delivered promising results. As a particular note-worthy feature of the approach, a coupling to an arbitrary finite element software is feasible in a non-invasive fashion. The aim of this contribution is to investigate the effect of kinematic hardening and cyclic loading on the convergence behavior of the algorithm.

  12. Two Different Approaches to Teaching Final-Year Projects for Mechanical Engineers and Biotechnologists at Ngee Ann Polytechnic--Case Studies Approach.

    Science.gov (United States)

    Walsh, Kath; Rebaczonok-Padulo, Michael

    1993-01-01

    Ngee Ann Polytechnic, a leading postsecondary technical institution in Singapore, offers English for academic and occupational purposes to prepare students for writing their final year projects. This article discusses the approaches used in Mechanical Engineering and Biotechnology projects. A sample exercise is appended. (Contains two references.)…

  13. A Parametric Optimization Approach to Mitigating the Urban Heat Island Effect: A Case Study in Ancona, Italy

    Directory of Open Access Journals (Sweden)

    Roberta Cocci Grifoni

    2016-09-01

    Full Text Available The aim of this paper is to identify a parameterization method that considers existing connections and relationships between traditional indicators of environmental sustainability as a step in combating climate change via urban strategies. A typical Mediterranean city (Ancona, Italy is investigated with a multi-objective optimization platform called modeFrontier, which uses Pareto optimality. This concept formalizes the trade-off between a given set of mutually contradicting objectives, such as high thermal comfort and low energy consumption, to identify a set of Pareto solutions. A solution is Pareto optimal when it is not possible to improve one objective without deteriorating at least one of the others. The optimization process employs given constraints (for example, meteorological scenarios with high temperature and low winds or morphological building parameters, custom procedural algorithms (recursive algorithms to generate the set of all non-dominated objective parameters, and genetic algorithms (inspired by the natural selection process to examine a wide urban space and identify interesting relationships among relevant variables for typical summer scenarios. Multi-objective optimizers involve many evaluations of two objectives (i.e., energy consumption and thermal comfort in this study while considering many analytical constraints. This approach entails a considerably more exhaustive search of environmental variables that can help the urban planning process to mitigate the urban heat island (UHI effect. Three quantitative metrics related to urban morphology and local climate conditions, as well as a thermal comfort indicator (the predicted mean vote, are defined and applied to Ancona to examine the potential for new sustainability in urban design. The results show that two parameters examined—compacity and a building-scale energy indicator—can offer insight when designing comfortable cities, while a citywide energy indicator shows

  14. Geospatial Modelling Approach for Interlinking of Rivers: A Case Study of Vamsadhara and Nagavali River Systems in Srikakulam, Andhra Pradesh

    Science.gov (United States)

    Swathi Lakshmi, A.; Saran, S.; Srivastav, S. K.; Krishna Murthy, Y. V. N.

    2014-11-01

    India is prone to several natural disasters such as floods, droughts, cyclones, landslides and earthquakes on account of its geoclimatic conditions. But the most frequent and prominent disasters are floods and droughts. So to reduce the impact of floods and droughts in India, interlinking of rivers is one of the best solutions to transfer the surplus flood waters to deficit/drought prone areas. Geospatial modelling provides a holistic approach to generate probable interlinking routes of rivers based on existing geoinformatics tools and technologies. In the present study, SRTM DEM and AWiFS datasets coupled with land-use/land -cover, geomorphology, soil and interpolated rainfall surface maps have been used to identify the potential routes in geospatial domain for interlinking of Vamsadhara and Nagavali River Systems in Srikakulam district, Andhra Pradesh. The first order derivatives are derived from DEM and road, railway and drainage networks have been delineated using the satellite data. The inundation map has been prepared using AWiFS derived Normalized Difference Water Index (NDWI). The Drought prone areas were delineated on the satellite image as per the records declared by Revenue Department, Srikakulam. Majority Rule Based (MRB) aggregation technique is performed to optimize the resolution of obtained data in order to retain the spatial variability of the classes. Analytical Hierarchy Process (AHP) based Multi-Criteria Decision Making (MCDM) is implemented to obtain the prioritization of parameters like geomorphology, soil, DEM, slope, and land use/land-cover. A likelihood grid has been generated and all the thematic layers are overlaid to identify the potential grids for routing optimization. To give a better routing map, impedance map has been generated and several other constraints are considered. The implementation of canal construction needs extra cost in some areas. The developed routing map is published into OGC WMS services using open source Geo

  15. Curriculum Assessment Using Artificial Neural Network and Support Vector Machine Modeling Approaches: A Case Study. IR Applications. Volume 29

    Science.gov (United States)

    Chen, Chau-Kuang

    2010-01-01

    Artificial Neural Network (ANN) and Support Vector Machine (SVM) approaches have been on the cutting edge of science and technology for pattern recognition and data classification. In the ANN model, classification accuracy can be achieved by using the feed-forward of inputs, back-propagation of errors, and the adjustment of connection weights. In…

  16. Towards an approach to assess critical quality points (CQPs) in food production systems : a case study on French fries production

    NARCIS (Netherlands)

    Ali, M.

    2012-01-01

    This thesis investigated how to develop an approach for the systematic and science based assessment of those points in food production systems that have a critical effect on quality; such points could be designated as critical quality points (CQPs). One of the fundamental objectives of quality

  17. Do Active Learning Approaches in Recitation Sections Improve Student Performance? A Case Study from an Introductory Mechanics Course

    Science.gov (United States)

    Tobin, R. G.

    2018-01-01

    Abundant research leaves little question that pedagogical approaches involving active student engagement with the material, and opportunities for student-to-student discussions, lead to much better learning outcomes than traditional instructor-led, expository instructional formats, in physics and in many other fields. In introductory college…

  18. A Comprehensive Approach in Developing "akhlaq": A Case Study on the Implementation of Character Education at Pondok Pesantren Darunnajah

    Science.gov (United States)

    Izfanna, Duna; Hisyam, Nik Ahmad

    2012-01-01

    Purpose: The purpose of this paper is to describe how a unique Islamic education system, named Pondok Pesantren, implemented and contributed substantially to the character education of its students. Design/methodology/approach: In total, 12 teachers and 24 students of Pondok Pesantren Darunnajah, Indonesia were interviewed, participated in focus…

  19. Identification and Ranking of Critical Success Factors of Knowledge Management Using Fuzzy Quality Function Deployment Approach: A Case Study

    Directory of Open Access Journals (Sweden)

    Ali Mohaghar

    2014-02-01

    Based on the information accessible for the researchers, this is one of the first works which evaluates the key factors of successful knowledge management through fuzzy quality function deployment approach. It is expected that the proposed method would represent appropriate tools for enterprises which have decided to implement knowledge management because it prioritizes the critical success factors based on the knowledge management outcomes.

  20. Senior University Officials' Approaches to Global Engagement: A Case Study of a Private and a Public Research University

    Science.gov (United States)

    Chan, Shirley

    2013-01-01

    The phenomenon of globalization has a significant impact on higher education, but the lack of a clear roadmap for how senior university officials should create and implement global engagement strategies and for how these approaches support (or impede) an organizational culture that fosters globalization remains a gap in knowledge in higher…

  1. Synergies between Theoretical Approaches to Mathematics Education with Technology: A Case Study through a Cross-Analysis Methodology

    Science.gov (United States)

    Maracci, Mirko; Cazes, Claire; Vandebrouck, Fabrice; Mariotti, Maria Alessandra

    2013-01-01

    Mathematics education as a research domain is characterized by a plurality of theoretical approaches. Acknowledging the existence of such diversity and the risks of an excessive theoretical fragmentation does not mean to search for a unifying theory but to urge the community to develop strategies for coping with this diversity. This article is…

  2. The Application of a Resilience Assessment Approach to Promote Campus Environmental Management: A South African Case Study

    Science.gov (United States)

    Muller, Irene; Tempelhoff, Johann

    2016-01-01

    Purpose: This paper aims to outline the benefits of using resilience assessment instead of command and control mechanisms to evaluate sustainable campus environments. Design/Methodology/Approach: An exploratory mixed-method design was followed for the purposes of the project. During the first qualitative phase, a historical timeline of the focal…

  3. An equivalent fluid/equivalent medium approach for the numerical simulation of coastal landslides propagation: theory and case studies

    Directory of Open Access Journals (Sweden)

    P. Mazzanti

    2009-11-01

    Full Text Available Coastal and subaqueous landslides can be very dangerous phenomena since they are characterised by the additional risk of induced tsunamis, unlike their completely-subaerial counterparts. Numerical modelling of landslides propagation is a key step in forecasting the consequences of landslides. In this paper, a novel approach named Equivalent Fluid/Equivalent Medium (EFEM has been developed. It adapts common numerical models and software that were originally designed for subaerial landslides in order to simulate the propagation of combined subaerial-subaqueous and completely-subaqueous landslides. Drag and buoyancy forces, the loss of energy at the landslide-water impact and peculiar mechanisms like hydroplaning can be suitably simulated by this approach; furthermore, the change in properties of the landslide's mass, which is encountered at the transition from the subaerial to the submerged environment, can be taken into account. The approach has been tested by modelling two documented coastal landslides (a debris flow and a rock slide at Lake Albano using the DAN-W code. The results, which were achieved from the back-analyses, demonstrate the efficacy of the approach to simulate the propagation of different types of coastal landslides.

  4. Mindfulness-Based Group Approach for Undergraduate Students with Disordered Eating or Body Image Issues: A Case Study

    Directory of Open Access Journals (Sweden)

    Olivia Stumpf

    2017-11-01

    Conclusions: A mindfulness-based group approach to treatment of disordered eating or body image issues shows promise for improving the quality of life for college-aged students. Undergraduate institutions have the advantage of using social interaction to facilitate healthy behavioral change. Future research with larger and more diverse samples is suggested, and implications regarding practice and education are also discussed.

  5. Transcriptional profiling approaches to understanding how plants regulate growth and defence: a case study illustrated by analysis of the role of vitamin C.

    Science.gov (United States)

    Foyer, Christine H; Kiddle, Guy; Verrier, Paul

    2007-01-01

    In this chapter, basic technical aspects concerning the design of DNA microarray experiments are discussed including sample preparation, hybridisation conditions and statistical significance of the acquired data are detailed. Given that microarrays are perhaps the most used tool in plant systems biology there is much experience in the pitfalls in using them. Herein important considerations are presented for both the experimental biologists and data analyst in order to maximise the utility of these resources. Finally a case study using the analysis of vitamin C deficient plants is presented to illustrate the power of this approach in enhancing comprehension of important and complex biological functions.

  6. The juvenile face as a suitable age indicator in child pornography cases: a pilot study on the reliability of automated and visual estimation approaches.

    Science.gov (United States)

    Ratnayake, M; Obertová, Z; Dose, M; Gabriel, P; Bröker, H M; Brauckmann, M; Barkus, A; Rizgeliene, R; Tutkuviene, J; Ritz-Timme, S; Marasciuolo, L; Gibelli, D; Cattaneo, C

    2014-09-01

    In cases of suspected child pornography, the age of the victim represents a crucial factor for legal prosecution. The conventional methods for age estimation provide unreliable age estimates, particularly if teenage victims are concerned. In this pilot study, the potential of age estimation for screening purposes is explored for juvenile faces. In addition to a visual approach, an automated procedure is introduced, which has the ability to rapidly scan through large numbers of suspicious image data in order to trace juvenile faces. Age estimations were performed by experts, non-experts and the Demonstrator of a developed software on frontal facial images of 50 females aged 10-19 years from Germany, Italy, and Lithuania. To test the accuracy, the mean absolute error (MAE) between the estimates and the real ages was calculated for each examiner and the Demonstrator. The Demonstrator achieved the lowest MAE (1.47 years) for the 50 test images. Decreased image quality had no significant impact on the performance and classification results. The experts delivered slightly less accurate MAE (1.63 years). Throughout the tested age range, both the manual and the automated approach led to reliable age estimates within the limits of natural biological variability. The visual analysis of the face produces reasonably accurate age estimates up to the age of 18 years, which is the legally relevant age threshold for victims in cases of pedo-pornography. This approach can be applied in conjunction with the conventional methods for a preliminary age estimation of juveniles depicted on images.

  7. An integrated approach to assess air pollution threats to cultural heritage in a semi-confined environment: the case study of Michelozzo's Courtyard in Florence (Italy).

    Science.gov (United States)

    Nava, S; Becherini, F; Bernardi, A; Bonazza, A; Chiari, M; García-Orellana, I; Lucarelli, F; Ludwig, N; Migliori, A; Sabbioni, C; Udisti, R; Valli, G; Vecchi, R

    2010-02-15

    An example of an integrated approach to assess air pollution threats to cultural heritage in a semi-confined environment is presented in this work, where the monitoring campaign carried out at the Michelozzo's Courtyard (in Palazzo Vecchio, Florence, Italy) is used as a case study. A wide research project was carried out, with the main aim of obtaining the first quantitative data on air quality and microclimate conditions inside the Courtyard, and, if possible, identifying the main causes of degradation and suggesting appropriate conservation strategies. The investigation adopted a holistic approach involving thermographic measurements on the wall paintings, microclimatic analysis, gaseous pollutant monitoring, atmospheric particles characterisation and dry deposition compositional analysis. Attention was focused on the wall painting depicting the city of Hall because of its anomalous and critical conservation conditions, which are visible at a glance, due to the contrast between a wide darker zone around the central subject of the painting and external lighter areas.

  8. Detecting relationships between the interannual variability in climate records and ecological time series using a multivariate statistical approach - four case studies for the North Sea region

    Energy Technology Data Exchange (ETDEWEB)

    Heyen, H. [GKSS-Forschungszentrum Geesthacht GmbH (Germany). Inst. fuer Gewaesserphysik

    1998-12-31

    A multivariate statistical approach is presented that allows a systematic search for relationships between the interannual variability in climate records and ecological time series. Statistical models are built between climatological predictor fields and the variables of interest. Relationships are sought on different temporal scales and for different seasons and time lags. The possibilities and limitations of this approach are discussed in four case studies dealing with salinity in the German Bight, abundance of zooplankton at Helgoland Roads, macrofauna communities off Norderney and the arrival of migratory birds on Helgoland. (orig.) [Deutsch] Ein statistisches, multivariates Modell wird vorgestellt, das eine systematische Suche nach potentiellen Zusammenhaengen zwischen Variabilitaet in Klima- und oekologischen Zeitserien erlaubt. Anhand von vier Anwendungsbeispielen wird der Klimaeinfluss auf den Salzgehalt in der Deutschen Bucht, Zooplankton vor Helgoland, Makrofauna vor Norderney, und die Ankunft von Zugvoegeln auf Helgoland untersucht. (orig.)

  9. a case study

    African Journals Online (AJOL)

    Assessment of (dis)ability in a prospec tive commercial diver with a hand injury – a case study. A case study in disability. W A J (JAck) MeintJes, MB ChB, DOM, FCPHM (SA) Occ Med, MMed (Occ Med). Specialist, Occupational Medicine, Division of Community Health, Department of Interdisciplinary Health Sciences, ...

  10. A holomorph approach to xiphosuran evolution : a case study on the ontogeny of Euproops

    DEFF Research Database (Denmark)

    Haug, Carolin; Van Roy, Peter; Leipner, Angelika

    2012-01-01

    Specimens of Euproops sp. (Xiphosura, Chelicerata) from the Carboniferous Piesberg quarry near Osnabrück, Germany, represent a relatively complete growth series of ten stages. Based on this growth sequence, morphological changes throughout the ontogeny can be identified. The major change affects ...... a holomorph approach, i.e., reconstructing ontogenetic sequences for fossil and extant species as a sound basis for a taxonomic, phylogenetic and evolutionary discussion of Xiphosura....... and approach each other closely to form a complete flange around the thoracetron (= fused tergites of the opisthosoma). These ontogenetic changes question the taxonomic status of different species of Euproops, as the latter appear to correspond to different stages of the ontogenetic series reconstructed from...

  11. Comparison of a traditional with a new approach based on Graph Theory to vulnerability assessment to natural hazards: a study case on a socio-economic complex system

    Science.gov (United States)

    Arosio, Marcello; Martina, Mario L. V.

    2017-04-01

    The emergent behaviour of the contemporary complex, socio-technical and interconnected society makes the collective risk greater than the sum of the parts and this requires a holistic, systematic and integrated approach. Although there have been major improvements in recent years, there are still some limitation in term of a holistic approach that is able to include the emergent value hidden in the connections between exposed elements and the interactions between the different spheres of the multi-hazards, vulnerability, exposure and resilience. To deal with these challenges it is necessary to consider the connections between the exposed elements (e.g. populations, schools, hospital, etc.) and to quantify the relative importance of the elements and their interconnections (e.g. the need of injured people to go to hospital or children to school). In a system (e.g. road, hospital and ecological network, etc.), or in a System of System (e.g. socio-technical urban service), there are critical elements that, beyond the intrinsic vulnerability, can be characterized by greater or lower vulnerability because of their physical, geographical, cyber or logical connections. To this aim, we propose in this study a comparative analysis between traditional reductionist approach and a new holistic approach to vulnerability assessment to natural hazards. The analysis considers a study case of a socio-economic complex system through an innovative approach based on the properties of graph G=(N,L). A graph consists of two sets N (nodes) and L (links): the nodes represent the single exposed elements (physical, social, environmental, etc.) to a hazard, while the links (or connections) represent the interaction between the elements. The final goal is to illustrate an application of this innovative approach of integrated collective vulnerability assessment.

  12. Operational Changes in a Shared Resource Laboratory with the Use of a Product Lifecycle Management Approach: A Case Study.

    Science.gov (United States)

    Hexley, Philip; Smith, Victoria; Wall, Samantha

    2016-04-01

    Shared Resource Laboratories (SRLs) provide investigators access to necessary scientific and resource expertise to leverage complex technologies fully for advancing high-quality biomedical research in a cost-effective manner. At the University of Nebraska Medical Center, the Flow Cytometry Research Facility (FCRF) offered access to exceptional technology, but the methods of operation were outdated and unsustainable. Whereas technology has advanced and the institute has expanded, the operations at the facility remained unchanged for 35 yr. To rectify this, at the end of 2013, we took a product lifecycle management approach to affect large operational changes and align the services offered with the SRL goal of education, as well as to provide service to researchers. These disruptive operational changes took over 10 mo to complete and allowed for independent end-user acquisition of flow cytometry data. The results have been monitored for the past 12 mo. The operational changes have had a positive impact on the quality of research, increased investigator-facility interaction, reduced stress of facility staff, and increased overall use of the resources. This product lifecycle management approach to facility operations allowed us to conceive of, design, implement, and monitor effectively the changes at the FCRF. This approach should be considered by SRL management when faced with the need for operationally disruptive measures.

  13. Doll therapy: a therapeutic means to meet past attachment needs and diminish behaviours of concern in a person living with dementia--a case study approach.

    Science.gov (United States)

    Bisiani, Leah; Angus, Jocelyn

    2013-07-01

    The aim of this research study was to examine the impact of the provision of a lifelike baby doll as a therapeutic tool on the behaviour of a person living with dementia. Specifically, this single case study assessed the potential benefits, if any, of the use of doll therapy in reducing behaviours of concern such as anxiety and agitation that may be associated with observed attachment needs of a person living with dementia. A single case study of a female participant, with moderately advanced Alzheimer's disease, was the subject of this research. The case study used both qualitative and quantitative research design and methodology in data collection and analysis. Demonstrated that doll therapy was a positive intervention for the person living with dementia who was the participant in this research. The findings indicate a reduction in behaviours of concern related to the need for attachment and a considerable decline in levels of anxiety and agitation. There was extensive ongoing improvement in social interaction and communication. This research supports doll therapy as a therapeutic intervention that may be utilized within the ongoing care of some persons with dementia to meet needs for attachment and to reduce behaviours of concern. Despite some controversy on this topic, doll therapy should be considered as a therapeutic approach to further dementia care in light of this positive outcome.

  14. Benefit of Doubt Approach to Case Weighting

    DEFF Research Database (Denmark)

    Wittrup, Jesper; Bogetoft, Peter

    as indications of the relative " importance " of different types of court cases, they are bound to raise controversy. The most elaborate weighting system is likely to have its critics who question whether the established weights are fair. To address these issues, we suggest a new " benefit of the doubt...... " approach. We allow for uncertain weights based on only partial information about the " true " weights, and we evaluate individual courts with the weights that put them in their most favorable light. The partial information about weights can originate as interval estimates: e.g., case type A requires...... of the applications of detailed case weights can continue to be accomplished. We can continue to evaluate the efficiency of the course, the device sound and the fair resource allocation procedures that are robust to the remaining uncertainty about weights. Our approach also dispenses with certain limitations...

  15. A BSC-DEA approach to measure the relative efficiency of service industry: A case study of banking sector

    Directory of Open Access Journals (Sweden)

    M. B. Aryanezhad

    2011-04-01

    Full Text Available Performance evaluation plays an important role in determining faults and difficulties of any organization as well as attempting to increase capabilities and improve activities. Data envelopment analysis (DEA, as a non-parametric method, has been one of the most important and significant management tools for measuring output or efficiency. In this paper, we propose a method to utilize balanced score card (BSC as a tool for designing performance evaluation indices of an organization. The integrated BSC-DEA has been applied as an empirical case for a major private bank organization and the results are analyzed.

  16. Case Studies in Sports Nutrition.

    Science.gov (United States)

    Clark, Nancy

    1988-01-01

    This article presents case studies of two athletes who wanted to affect a change in their body weight in order to enhance athletic performance. Each athlete's problem and the nutrition approach used to solve it are discussed. Caloric values of fast foods are listed. (JL)

  17. eCompetence Case Studies

    DEFF Research Database (Denmark)

    Jensen, Helle Bækkelund

    2006-01-01

    In this paper we present some details of the processes undertaken in the European eCompetence Initiative. We present two illustrative and representative case studies. The research aims to identify and understand patterns of individual and organisational eCompetence approaches....

  18. A new approach to global health institutions? A case study of new vaccine introduction and the formation of the GAVI Alliance.

    Science.gov (United States)

    Sandberg, Kristin Ingstad; Andresen, Steinar; Bjune, Gunnar

    2010-10-01

    There is an emerging research agenda to analyse empirically the forces driving changes in global health governance. This study applies analytical tools from international relations research to explain the formation of international health regimes. The study utilizes two explanatory perspectives: individual leadership, and the interests of key non-state actors in the formation process, using the case of the formation of the Global Alliance for Vaccines and Immunization (GAVI) from 1995 to 1999. The case study is based on material from interviews with key actors, an archival review of documents from the Children's Vaccine Initiative (CVI), and published literature. Findings show that the regime formation process was initiated by individuals who were primarily affiliated to scientific communities and who led to the World Bank and the Gates Foundation becoming champions of a new coordinating mechanism for new vaccine introduction. Negotiations in the regime formation process were between a small group of founding agencies with divergent interests regarding immunization priorities. The case also sheds light on the authority of the WHO and the resources of the Gates Foundation in driving the process towards the final structure of the alliance. The paper discusses the potential contribution of the international relations approach compared to policy research as a way of understanding the institutional dynamics of global health, particularly in respect of relations between countries and non-state actors.

  19. GIS-Based Fast Moving Landslide Risk Analysis Model Using Qualitative Approach: A Case Study of Balakot, Pakistan

    Directory of Open Access Journals (Sweden)

    Abdul Salam Soomro

    2011-04-01

    Full Text Available The innovation of this research is the development of new model called fast moving landslide risk analysis model by modifying one of the previous prominent landslide risk algorithms focusing on the fast moving type of the landslides (such as mudslides, mud flows, block slide, rock fall and topple based on the qualitative approach using Heuristic method in GIS (Geographical Information Systems. The different event controlling parameters and criteria were used for fast moving landslide predictive risk model. The pair wise comparison method was used in which the parameters of landslide hazard and vulnerability were compared by their assigned weights. The drawback of the used approach was justified by the standard value of consistency ratio, which proved the assigned weight of the parameters as reasonable and consistent. The model was validated by using the occurred landslides inventory data and correlation coefficient test, which showed the positive relationship between the landslide risk predicted regions and the occurred landslides locations. The various landslide events occurred on 8th October, 2005 were accumulated as landslide inventory by the interpretation of satellite imagery. The validation of the model was justified by using one of the statistical two paired, \\"t\\" test, and the amount of the predicted risk in the different regions. It is believed that this modified model will prove beneficial to the decision makers in future.

  20. The Saturation+ Approach to Behavior Change: Case Study of a Child Survival Radio Campaign in Burkina Faso.

    Science.gov (United States)

    Murray, Joanna; Remes, Pieter; Ilboudo, Rita; Belem, Mireille; Salouka, Souleymane; Snell, Will; Wood, Cathryn; Lavoie, Matthew; Deboise, Laurent; Head, Roy

    2015-11-03

    A 35-month cluster randomized controlled trial was conducted in Burkina Faso to test whether a radio campaign focused on child health, broadcast between March 2012 and January 2015, could reduce under-5 mortality. This paper describes the design and implementation of the mass media intervention in detail, including the Saturation+ principles that underpinned the approach, the creative process, the lessons learned, and recommendations for implementing this intervention at scale. The Saturation+ approach focuses on the 3 core principles of saturation (ensuring high exposure to campaign messages), science (basing campaign design on data and modeling), and stories (focusing the dramatic climax on the target behavior) to maximize the impact of behavior change campaigns. In Burkina Faso, creative partnerships with local radio stations helped us obtain free airtime in exchange for training and investing in alternative energy supplies to solve frequent energy problems faced by the stations. The campaign used both short spots and longer drama formats, but we consider the short spots as a higher priority to retain during scale-up, as they are more cost-effective than longer formats and have the potential to ensure higher exposure of the population to the messages. The implementation research synthesized in this paper is designed to enable the effective adoption and integration of evidence-based behavior change communication interventions into health care policy and practice. © Murray et al.

  1. An interdisciplinary approach to volcanic risk reduction under conditions of uncertainty: a case study of Tristan da Cunha

    Science.gov (United States)

    Hicks, A.; Barclay, J.; Simmons, P.; Loughlin, S.

    2013-12-01

    This research project adopted an interdisciplinary approach to volcanic risk reduction on the remote volcanic island of Tristan da Cunha (South Atlantic). New data were produced that: (1) established no spatio-temporal pattern to recent volcanic activity; (2) quantified the high degree of scientific uncertainty around future eruptive scenarios; (3) analysed the physical vulnerability of the community as a consequence of their geographical isolation and exposure to volcanic hazards; (4) evaluated social and cultural influences on vulnerability and resilience. Despite their isolation and prolonged periods of hardship, islanders have demonstrated an ability to cope with and recover from adverse events. This resilience is likely a function of remoteness, strong kinship ties, bonding social capital, and persistence of shared values and principles established at community inception. While there is good knowledge of the styles of volcanic activity on Tristan, given the high degree of scientific uncertainty about the timing, size and location of future volcanism, a qualitative scenario planning approach was used as a vehicle to convey this information to the islanders. This deliberative, anticipatory method allowed on-island decision makers to take ownership of risk identification, management and capacity building within their community. This paper demonstrates the value of integrating social and physical sciences with development of effective, tailored communication strategies in volcanic risk reduction.

  2. Teaching Approaches of Beginning Teachers for Jewish Studies in Israeli "Mamlachti" Schools: A Case Study of a Jewish Education Teachers' Training Program for Outstanding Students

    Science.gov (United States)

    Katzin, Ori

    2015-01-01

    This article presents findings from a longitudinal qualitative study that examined teaching approaches of neophyte teachers in Israel during their 4-year exclusive teachers' training program for teaching Jewish subjects and first two years of teaching. The program wanted to promote change in secular pupils' attitudes toward Jewish subjects. We…

  3. Safety assessment in plant layout design using indexing approach: implementing inherent safety perspective. Part 2-Domino Hazard Index and case study.

    Science.gov (United States)

    Tugnoli, Alessandro; Khan, Faisal; Amyotte, Paul; Cozzani, Valerio

    2008-12-15

    The design of layout plans requires adequate assessment tools for the quantification of safety performance. The general focus of the present work is to introduce an inherent safety perspective at different points of the layout design process. In particular, index approaches for safety assessment and decision-making in the early stages of layout design are developed and discussed in this two-part contribution. Part 1 (accompanying paper) of the current work presents an integrated index approach for safety assessment of early plant layout. In the present paper (Part 2), an index for evaluation of the hazard related to the potential of domino effects is developed. The index considers the actual consequences of possible escalation scenarios and scores or ranks the subsequent accident propagation potential. The effects of inherent and passive protection measures are also assessed. The result is a rapid quantification of domino hazard potential that can provide substantial support for choices in the early stages of layout design. Additionally, a case study concerning selection among various layout options is presented and analyzed. The case study demonstrates the use and applicability of the indices developed in both parts of the current work and highlights the value of introducing inherent safety features early in layout design.

  4. Approach to the research and the situation of Public Relations in Europe. Comparative study between German and Spanish cases

    Directory of Open Access Journals (Sweden)

    Dra. María Isabel Míguez González

    2007-01-01

    Full Text Available With the aim of bring near to the spanish academic field the european approaches of Public Relations, this article makes a compared revision of the situation of this subject and profession in Germany and Spain. This revision shows important resemblances on the use of the term “public relations”, the confusion of this subject with other communicative activities, the professional development and the problems of the field in both countries. However, it also shows that Germany has more tradition on public relations research than Spain and, therefore, it has a more extensive corpus of theories about this subject. For this reason, since important resemblances exist in other aspects, german research on public relations could be interesting for the spanish academic field both to explain the situation of public relations in Spain and to motivate theoretical development in our country.

  5. Selecting Proper Plant Species for Mine Reclamation Using Fuzzy AHP Approach (Case Study: Chadormaloo Iron Mine of Iran)

    Science.gov (United States)

    Ebrahimabadi, Arash

    2016-12-01

    This paper describes an effective approach to select suitable plant species for reclamation of mined lands in Chadormaloo iron mine which is located in central part of Iran, near the city of Bafgh in Yazd province. After mine's total reserves are excavated, the mine requires to be permanently closed and reclaimed. Mine reclamation and post-mining land-use are the main issues in the phase of mine closure. In general, among various scenarios for mine reclamation process, i.e. planting, agriculture, forestry, residency, tourist attraction, etc., planting is the oldest and commonly-used technology for the reclamation of lands damaged by mining activities. Planting and vegetation play a major role in restoring productivity, ecosystem stability and biological diversity to degraded areas, therefore the main goal of this research work is to choose proper and suitable plants compatible with the conditions of Chadormaloo mined area, providing consistent conditions for future use. To ensure the sustainability of the reclaimed landscape, the most suitable plant species adapted to the mine conditions are selected. Plant species selection is a Multi Criteria Decision Making (MCDM) problem. In this paper, a fuzzy MCDM technique, namely Fuzzy Analytic Hierarchy Process (FAHP) is developed to assist chadormaloo iron mine managers and designers in the process of plant type selection for reclamation of the mine under fuzzy environment where the vagueness and uncertainty are taken into account with linguistic variables parameterized by triangular fuzzy numbers. The results achieved from using FAHP approach demonstrate that the most proper plant species are ranked as Artemisia sieberi, Salsola yazdiana, Halophytes types, and Zygophyllum, respectively for reclamation of Chadormaloo iron mine.

  6. New Approach in Filling of Fixed-Point Cells: Case Study of the Melting Point of Gallium

    Science.gov (United States)

    Bojkovski, J.; Hiti, M.; Batagelj, V.; Drnovšek, J.

    2008-02-01

    The typical way of constructing fixed-point cells is very well described in the literature. The crucible is loaded with shot, or any other shape of pure metal, inside an argon-filled glove box. Then, the crucible is carefully slid into a fused-silica tube that is closed at the top with an appropriate cap. After that, the cell is removed from the argon glove box and melted inside a furnace while under vacuum or filled with an inert gas like argon. Since the metal comes as shot, or in some other shape such as rods of various sizes, and takes more volume than the melted material, it is necessary to repeat the procedure until a sufficient amount of material is introduced into the crucible. With such a procedure, there is the possibility of introducing additional impurities into the pure metal with each cycle of melting the material and putting it back into the glove box to fill the cell. Our new approach includes the use of a special, so-called dry-box system, which is well known in chemistry. The atmosphere inside the dry box contains less than 20 ppm of water and less than 3 ppm of oxygen. Also, the size of the dry box allows it to contain a furnace for melting materials, not only for gallium but for higher-temperature materials as well. With such an approach, the cell and all its parts (pure metal, graphite, fused-silica tube, and cap) are constantly inside the controlled atmosphere, even while melting the material and filling the crucible. With such a method, the possibility of contaminating the cell during the filling process is minimized.

  7. An Integrated Approach for Understanding Anthropogenic and Climatic Impacts on Lakes: A Case study from Lake Iznik, Turkey

    Science.gov (United States)

    Derin, Y.; Milewski, A.; Fryar, A. E.; Schroeder, P.

    2013-12-01

    Lakes are among the most vital natural water resource, providing many environmental and economic advantages to a region. Unfortunately, many lakes are disappearing or continue to be polluted as industrial and agricultural practices increase to keep pace with rising populations. Lake Iznik, the biggest lake (approximately 300 km2) in the Marmara Region in Turkey, is a significant water resource as it provides opportunities for recreational activities, agriculture, industry, and water production for the region. However, rapid population growth combined with poor land management practices in this water basin has contributed to decreased water quality and water levels. As a result, Lake Iznik has switched from being Mesotrophic to Eutrophic in the past thirty years. This research aims to understand both the anthropogenic and climatic impacts on Lake Iznik. An integrated approach combining satellite remote sensing, hydrogeology, hydrologic modeling, and climatology was utilized to identify the source and timing responsible for the decline in water quality and quantity. Specifically, Landsat TM images from 1990, 2000, 2005, and 2010 were collected, processed, and analyzed for changes in landuse/landcover and surface area extent of Lake Iznik. Water level and water quality data (e.g. streamflow, lake level, pH, conductivity, total nitrogen, total dissolved solid etc.) collected from the General Directorate of State Hydraulic Works (DSI) from 1980-2012 were obtained from 4 stations and compared to the Landsat landuse mosaics. Meteorological data collected from Turkish State Meteorological Service from 1983-2012 were obtained from 3 stations (precipitation, temperature, atmospheric pressure, relative humidity, vapor pressure, wind speed and pan evaporation). A hydrologic model using MIKE21 was constructed to measure the change in streamflow and subsequent lake level as a result of changes in both land use and climate. Results have demonstrated the drop in water level from

  8. On the Use of Dance as a Rehabilitation Approach for Children with Cerebral Palsy: A Single Case Study.

    Science.gov (United States)

    Morán Pascual, Patricia; Mortes Roselló, Esther; Domingo Jacinto, Amparo; Belda Lois, Juan Manuel; Bermejo, Ignacio; Medina, Enric; Barberà Guillem, Ricard

    2015-01-01

    Cerebral Palsy (CP) is the most common motor disability in childhood. It is a group of permanent disorders that affect child development causing disorders of movement and posture and activity limitations. The impairment of psychomotor skills of children with Cerebral Palsy is attributed to a permanent alteration occurred in non-progressive brain development of the fetus or nursing infant. Some motor related symptoms can be treated using proper physical therapy. However, one of the biggest problems of the usual physical therapy is adherence to therapy. Ballet can be an alternative or a complement to physiotherapy, with the added attraction of not being part of a to therapy, but a fun activity with the extra reward associated with the realization of an artistic activity. For some years the ballet is used as therapeutically valuable for both children with cerebral palsy: Intensive ballet training can generate changes in the sensorimotor cortex. Ballet is characterized by a complex process of movements that have to be in a musical rhythm (hence have to be precise), in which there is an overall coordination of the muscles. It is also a highly motivating and rewarding activity that allows many children with CP sharing the activities of their peers without special needs. Objective measurements of the Full Port de Bras movement has been chosen as an index of improvement. The results shows progressive improvements of the execution in a single case.

  9. Diabetes as a case study of chronic disease management with a personalized approach: the role of a structured feedback loop.

    Science.gov (United States)

    Ceriello, Antonio; Barkai, László; Christiansen, Jens Sandahl; Czupryniak, Leszek; Gomis, Ramon; Harno, Kari; Kulzer, Bernhard; Ludvigsson, Johnny; Némethyová, Zuzana; Owens, David; Schnell, Oliver; Tankova, Tsvetalina; Taskinen, Marja-Riitta; Vergès, Bruno; Weitgasser, Raimund; Wens, Johan

    2012-10-01

    As non-communicable or chronic diseases are a growing threat to human health and economic growth, political stakeholders are aiming to identify options for improved response to the challenges of prevention and management of non-communicable diseases. This paper is intended to contribute ideas on personalized chronic disease management which are based on experience with one major chronic disease, namely diabetes mellitus. Diabetes provides a pertinent case of chronic disease management with a particular focus on patient self-management. Despite advances in diabetes therapy, many people with diabetes still fail to achieve treatment targets thus remaining at risk of complications. Personalizing the management of diabetes according to the patient's individual profile can help in improving therapy adherence and treatment outcomes. This paper suggests using a six-step cycle for personalized diabetes (self-)management and collaborative use of structured blood glucose data. E-health solutions can be used to improve process efficiencies and allow remote access. Decision support tools and algorithms can help doctors in making therapeutic decisions based on individual patient profiles. Available evidence about the effectiveness of the cycle's constituting elements justifies expectations that the diabetes management cycle as a whole can generate medical and economic benefit. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

  10. An Integrative Approach to Understand the Climatic-Hydrological Process: A Case Study of Yarkand River, Northwest China

    Directory of Open Access Journals (Sweden)

    Jianhua Xu

    2013-01-01

    Full Text Available Taking the Yarkand River as an example, this paper conducted an integrative approach combining the Durbin-Watson statistic test (DWST, multiple linear regression (MLR, wavelet analysis (WA, coefficient of determination (CD, and Akaike information criterion (AIC to analyze the climatic-hydrological process of inland river, Northwest China from a multitime scale perspective. The main findings are as follows. (1 The hydrologic and climatic variables, that is, annual runoff (AR, annual average temperature, (AAT and annual precipitation (AP, are stochastic and, no significant autocorrelation. (2 The variation patterns of runoff, temperature, and precipitation were scale dependent in time. AR, AAT, and AP basically present linear trends at 16-year and 32-year scales, but they show nonlinear fluctuations at 2-year and 4-year scales. (3 The relationship between AR with AAT and AP was simulated by the multiple linear regression equation (MLRE based on wavelet analysis at each time scale. But the simulated effect at a larger time scale is better than that at a smaller time scale.

  11. Efficiency evaluation of a safety department in a construction company-A case study: A DEA approach

    Directory of Open Access Journals (Sweden)

    Solomon Odeyale

    2015-01-01

    Full Text Available Data Envelopment Analysis (DEA is a decision making tool based on linear programming for measuring the relative efficiency of a set of comparable units. DEA helps us identify the sources and level of inefficiency for each of the inputs and outputs. This approach has been used to evaluate the efficiency of the safety department in five construction companies. A three-input, safety workforce, safety training, and safety budget, and two-output, Perfect days and Uptime, constant returns-to-scale (CRS model was developed. The model indicated the necessary improvements required in the inefficient unit’s inputs and outputs to make it efficient, by identifying what factor is responsible for the low efficiency of performance, and also what factor should be improved in order to improve the efficiency of the safety department. The result shows that the safety department of firm A, B and D are efficient, but Firm C and Firm E can improve their efficiency by reducing inputs up to 3.34% and 6.05%, respectively. The inputs identified for reduction were; number of safety staffs and safety budget for Firm C and E respectively.

  12. A new approach to improve reservoir characterization using intelligent systems - a case study: Toldado field in Colombia

    Energy Technology Data Exchange (ETDEWEB)

    Soto B, Rodolfo; Bernal, Maria C.; Silva, Bernardo; Bejarano, Aristobulo; Cobaleda, Gloria [Ecopetrol S.A., Bogota (Colombia)]|[Instituto Colombiano del Petroleo, Bogota (Colombia); Arango, Sandro; Torres, Freddy

    2000-07-01

    This paper presents a new technique to improve reservoir characterization. We integrated concepts of multivariate statistical analysis and soft computing to get better petrophysical models. We applied the proposed technique to model permeability for the highly heterogeneous cretaceous Caballos formation in Toldado field, Colombia. First, we evaluated the permeability model developed by D. K. Davies in this field. His method is based fundamentally on the identification of rock types (intervals of rock with unique pore geometry). We think this a good approach to improve the prediction of permeability. However, Davies gets traditional models (Log permeability vs. porosity) for each rock type. We found a 78% of average absolute error in his model for Toldado field. Using of multivariate statistical analysis, we found that the dominant independent variables to predict the permeability for Toldado field were porosity, index of the effective photo-electric absorption cross section of the formation, and gamma ray logs. Our neural network permeability model has an average absolute error less than 8%. Finally, we validated the neural network permeability model by applying the concept of the hydraulic interwell connectivity index (HICI). These models helped us to improve the history match and make recommendations to increase the oil production by about 500 bopd. (author)

  13. Applying the collective impact approach to address non-native species: A case study of the Great Lakes Phragmites Collaborative

    Science.gov (United States)

    Braun, H. B.; Kowalski, Kurt P.; Hollins, K.

    2016-01-01

    To address the invasion of non-native Phragmites in the Great Lakes, researchers at the U.S. Geological Survey—Great Lakes Science Center partnered with the Great Lakes Commission in 2012 to establish the Great Lakes Phragmites Collaborative (GLPC). The GLPC is a regional-scale partnership established to improve collaboration among stakeholders and increase the effectiveness of non-native Phragmites management and research. Rather than forming a traditional partnership with a narrowly defined goal, the GLPC follows the principles of collective impact to engage stakeholders, guide progress, and align resources to address this complex, regional challenge. In this paper, the concept and tenets of collective impact are described, the GLPC is offered as a model for other natural resource-focused collective impact efforts, and steps for establishing collaboratives are presented. Capitalizing on the interactive collective impact approach, the GLPC is moving toward a broadly accepted common agenda around which agencies and individuals will be able to better align their actions and generate measureable progress in the regional campaign to protect healthy, diverse ecosystems from damage caused by non-native Phragmites.

  14. A New Approach to Line Simplification Based on Image Processing: A Case Study of Water Area Boundaries

    Directory of Open Access Journals (Sweden)

    Yilang Shen

    2018-01-01

    Full Text Available Line simplification is an important component of map generalization. In recent years, algorithms for line simplification have been widely researched, and most of them are based on vector data. However, with the increasing development of computer vision, analysing and processing information from unstructured image data is both meaningful and challenging. Therefore, in this paper, we present a new line simplification approach based on image processing (BIP, which is specifically designed for raster data. First, the key corner points on a multi-scale image feature are detected and treated as candidate points. Then, to capture the essence of the shape within a given boundary using the fewest possible segments, the minimum-perimeter polygon (MPP is calculated and the points of the MPP are defined as the approximate feature points. Finally, the points after simplification are selected from the candidate points by comparing the distances between the candidate points and the approximate feature points. An empirical example was used to test the applicability of the proposed method. The results showed that (1 when the key corner points are detected based on a multi-scale image feature, the local features of the line can be extracted and retained and the positional accuracy of the proposed method can be maintained well; and (2 by defining the visibility constraint of geographical features, this method is especially suitable for simplifying water areas as it is aligned with people’s visual habits.

  15. An Integrated model for Product Quality Development—A case study on Quality functions deployment and AHP based approach

    Science.gov (United States)

    Maitra, Subrata; Banerjee, Debamalya

    2010-10-01

    Present article is based on application of the product quality and improvement of design related with the nature of failure of machineries and plant operational problems of an industrial blower fan Company. The project aims at developing the product on the basis of standardized production parameters for selling its products in the market. Special attention is also being paid to the blower fans which have been ordered directly by the customer on the basis of installed capacity of air to be provided by the fan. Application of quality function deployment is primarily a customer oriented approach. Proposed model of QFD integrated with AHP to select and rank the decision criterions on the commercial and technical factors and the measurement of the decision parameters for selection of best product in the compettitive environment. The present AHP-QFD model justifies the selection of a blower fan with the help of the group of experts' opinion by pairwise comparison of the customer's and ergonomy based technical design requirements. The steps invoved in implementation of the QFD—AHP and selection of weighted criterion may be helpful for all similar purpose industries maintaining cost and utility for competitive product.

  16. Detecting deforestation with a spectral change detection approach using multitemporal Landsat data: a case study of Kinabalu Park, Sabah, Malaysia.

    Science.gov (United States)

    Phua, Mui-How; Tsuyuki, Satoshi; Furuya, Naoyuki; Lee, Jung Soo

    2008-09-01

    Tropical deforestation is occurring at an alarming rate, threatening the ecological integrity of protected areas. This makes it vital to regularly assess protected areas to confirm the efficacy of measures that protect that area from clearing. Satellite remote sensing offers a systematic and objective means for detecting and monitoring deforestation. This paper examines a spectral change approach to detect deforestation using pattern decomposition (PD) coefficients from multitemporal Landsat data. Our results show that the PD coefficients for soil and vegetation can be used to detect deforestation using change vector analysis (CVA). CVA analysis demonstrates that deforestation in the Kinabalu area, Sabah, Malaysia has significantly slowed from 1.2% in period 1 (1973 and 1991) to 0.1% in period 2 (1991 and 1996). A comparison of deforestation both inside and outside Kinabalu Park has highlighted the effectiveness of the park in protecting the tropical forest against clearing. However, the park is still facing pressure from the area immediately surrounding the park (the 1 km buffer zone) where the deforestation rate has remained unchanged.

  17. Differences between true mean temperatures and means calculated with four different approaches: a case study from three Croatian stations

    Science.gov (United States)

    Bonacci, Ognjen; Željković, Ivana

    2018-01-01

    Different countries use varied methods for daily mean temperature calculation. None of them assesses precisely the true daily mean temperature, which is defined as the integral of continuous temperature measurements in a day. Of special scientific as well as practical importance is to find out how temperatures calculated by different methods and approaches deviate from the true daily mean temperature. Five mean daily temperatures were calculated (T0, T1, T2, T3, T4) using five different equations. The mean of 24-h temperature observations during the calendar day is accepted to represent the true, daily mean T0. The differences Δ i between T0 and four other mean daily temperatures T1, T2, T3, and T4 were calculated and analysed. In the paper, analyses were done with hourly data measured in a period from 1 January 1999 to 31 December 2014 (149,016 h, 192 months and 16 years) at three Croatian meteorological stations. The stations are situated in distinct climatological areas: Zagreb Grič in a mild climate, Zavižan in the cold mountain region and Dubrovnik in the hot Mediterranean. Influence of fog on the temperature is analysed. Special attention is given to analyses of extreme (maximum and minimum) daily differences occurred at three analysed stations. Selection of the fixed local hours, which is in use for calculation of mean daily temperature, plays a crucial role in diminishing of bias from the true daily temperature.

  18. The approaches Hong Kong Chinese mothers adopt to teach their preschool children to prevent influenza: a multiple case study at household level.

    Science.gov (United States)

    Lam, Winsome; Fowler, Cathrine; Dawson, Angela

    2016-01-01

    In Hong Kong, the population is at risk of seasonal influenza infection twice a year. Seasonal influenza is significantly associated with the increased hospitalization of children. Maintaining personal hygiene and vaccination are the most effective measures to prevent influenza infection. Research demonstrates a positive relationship between the health practices applied by parents and the behaviour of their children highlighting the importance of parental heath education. However, there is minimal research that provides an understanding of how Hong Kong Chinese parents teach their children to prevent seasonal influenza. Mixed methods research was undertaken that employed a multiple-case study approach to gain an understanding of parental teaching practices regarding seasonal influenza prevention. Purposive intensity sampling was adopted to recruit twenty parents and their healthy children. A thematic analysis was employed to examine the qualitative interview data and the quantitative survey data were examined descriptively. These data were then integrated to provide a more rigorous understanding of parental teaching strategies. Comparisons were made across cases to reveal commonalities and differences. Five major themes were identified: processes parents used to teach personal hygiene; parent-child interaction during teaching; approaches to managing children's health behaviours; enhancing children's healthy practices; and parents' perspective of the role of the nurse in health promotion. This study provided valuable insight into the approach of Hong Kong Chinese parents in teaching their children to prevent seasonal influenza. The results indicate that parents can be better supported to develop effective strategies to teach their preschool children hygiene practices for seasonal influenza prevention. Partnerships with community nurses can play a role in building effective parent-child interactions to enhance children's learning and adoption of healthy practices.

  19. How Physics Teachers Approach Innovation: An Empirical Study for Reconstructing the Appropriation Path in the Case of Special Relativity

    Science.gov (United States)

    De Ambrosis, Anna; Levrini, Olivia

    2010-01-01

    This paper concerns an empirical study carried out with a group of high school physics teachers engaged in the Module on relativity of a Master course on the teaching of modern physics. The study is framed within the general research issue of how to promote innovation in school via teachers' education and how to foster fruitful interactions…

  20. Six Heliport Case Studies

    National Research Council Canada - National Science Library

    Peisen, Deborah

    1997-01-01

    .... This report evaluates the dynamics of heliport development and operation in order to achieve greater success rate in the future through the case study investigation of six heliports that have both succeeded and failed...

  1. HYDROGEOLOGIC CASE STUDIES

    Science.gov (United States)

    Hydrogeology is the foundation of subsurface site characterization for evaluations of monitored natural attenuation (MNA). Three case studies are presented. Examples of the potentially detrimental effects of drilling additives on ground-water samples from monitoring wells are d...

  2. Unit operation optimization for the manufacturing of botanical injections using a design space approach: a case study of water precipitation.

    Science.gov (United States)

    Gong, Xingchu; Chen, Huali; Chen, Teng; Qu, Haibin

    2014-01-01

    Quality by design (QbD) concept is a paradigm for the improvement of botanical injection quality control. In this work, water precipitation process for the manufacturing of Xueshuantong injection, a botanical injection made from Notoginseng Radix et Rhizoma, was optimized using a design space approach as a sample. Saponin recovery and total saponin purity (TSP) in supernatant were identified as the critical quality attributes (CQAs) of water precipitation using a risk assessment for all the processes of Xueshuantong injection. An Ishikawa diagram and experiments of fractional factorial design were applied to determine critical process parameters (CPPs). Dry matter content of concentrated extract (DMCC), amount of water added (AWA), and stirring speed (SS) were identified as CPPs. Box-Behnken designed experiments were carried out to develop models between CPPs and process CQAs. Determination coefficients were higher than 0.86 for all the models. High TSP in supernatant can be obtained when DMCC is low and SS is high. Saponin recoveries decreased as DMCC increased. Incomplete collection of supernatant was the main reason for the loss of saponins. Design space was calculated using a Monte-Carlo simulation method with acceptable probability of 0.90. Recommended normal operation region are located in DMCC of 0.38-0.41 g/g, AWA of 3.7-4.9 g/g, and SS of 280-350 rpm, with a probability more than 0.919 to attain CQA criteria. Verification experiment results showed that operating DMCC, SS, and AWA within design space can attain CQA criteria with high probability.

  3. Unit operation optimization for the manufacturing of botanical injections using a design space approach: a case study of water precipitation.

    Directory of Open Access Journals (Sweden)

    Xingchu Gong

    Full Text Available Quality by design (QbD concept is a paradigm for the improvement of botanical injection quality control. In this work, water precipitation process for the manufacturing of Xueshuantong injection, a botanical injection made from Notoginseng Radix et Rhizoma, was optimized using a design space approach as a sample. Saponin recovery and total saponin purity (TSP in supernatant were identified as the critical quality attributes (CQAs of water precipitation using a risk assessment for all the processes of Xueshuantong injection. An Ishikawa diagram and experiments of fractional factorial design were applied to determine critical process parameters (CPPs. Dry matter content of concentrated extract (DMCC, amount of water added (AWA, and stirring speed (SS were identified as CPPs. Box-Behnken designed experiments were carried out to develop models between CPPs and process CQAs. Determination coefficients were higher than 0.86 for all the models. High TSP in supernatant can be obtained when DMCC is low and SS is high. Saponin recoveries decreased as DMCC increased. Incomplete collection of supernatant was the main reason for the loss of saponins. Design space was calculated using a Monte-Carlo simulation method with acceptable probability of 0.90. Recommended normal operation region are located in DMCC of 0.38-0.41 g/g, AWA of 3.7-4.9 g/g, and SS of 280-350 rpm, with a probability more than 0.919 to attain CQA criteria. Verification experiment results showed that operating DMCC, SS, and AWA within design space can attain CQA criteria with high probability.

  4. Facilitating a stakeholder-led approach to the development of Mediterranean climate services: co-ordinating the CLIM-RUN case studies

    Science.gov (United States)

    Goodess, C. M.

    2012-04-01

    The CLIM-RUN case studies provide a real-world context for bringing together experts on the demand and supply side of climate services. They are essential to the CLIM-RUN objective of using iterative and bottom-up (i.e., stakeholder led) approaches for optimizing the two-way information transfer between climate experts and stakeholders. The region of interest for CLIM-RUN is the Mediterranean, which is a recognised climate change hotspot (i.e., a region particularly sensitive and vulnerable to global warming) and which does not currently have developed climate service networks such as exist in a number of Central and Northern European countries. The case studies focus on the energy and tourism sectors, but also include a cross-cutting study on wild fires (an issue of increasing concern in the Mediterranean) as well as a cross-sectorial integrated case study for the Venice lagoon. They span coastal (e.g., Tunisia and Croatia), island (e.g., Cyprus) and mountain (e.g., Savoie) environments, the eastern (e.g., Greece) to western (e.g., Spain, Morocco) Mediterranean regions, and regional to local foci. Stakeholder involvement has been critical from the start of the project in March 2011, with a series of targeted workshops helping to define the framework for each case study. Two specific workshop objectives were to (i) better understand who are the climate services stakeholders and (ii) what they need/want from climate services (both in terms of data products and broader knowledge). Many of the workshops were held in local languages to maximise stakeholder participation, with expert knowledge provided by the CLIM-RUN climate and stakeholder expert teams (the CET and SET). Following the workshops, CET members are 'translating' the user needs into specific requirements from climate observations and models and identifying areas where additional modelling and analysis are required. As part of the central co-ordination of the case studies, a perception and data needs

  5. Objectivist case study research

    DEFF Research Database (Denmark)

    Ridder, Hanne Mette Ochsner; Fachner, Jörg

    2016-01-01

    be achieved through the use of objectivist case study research. The strength of the case study design is that it allows for uncovering or suggesting causal relationships in real-life settings through an intensive and rich collection of data. According to Hilliard (1993), the opposite applies for extensive...... designs, in which a small amount of data is gathered on a large number of subjects. With the richness of data, the intensive design is ―the primary pragmatic reason for engaging in single-case or small N research‖ (p. 374) and for working from an idiographic rather than a nomothetic perspective....

  6. Approaches for describing and communicating overall uncertainty in toxicity characterizations: U.S. Environmental Protection Agency's Integrated Risk Information System (IRIS) as a case study.

    Science.gov (United States)

    Beck, Nancy B; Becker, Richard A; Erraguntla, Neeraja; Farland, William H; Grant, Roberta L; Gray, George; Kirman, Christopher; LaKind, Judy S; Jeffrey Lewis, R; Nance, Patricia; Pottenger, Lynn H; Santos, Susan L; Shirley, Stephanie; Simon, Ted; Dourson, Michael L

    2016-01-01

    Single point estimates of human health hazard/toxicity values such as a reference dose (RfD) are generally used in chemical hazard and risk assessment programs for assessing potential risks associated with site- or use-specific exposures. The resulting point estimates are often used by risk managers for regulatory decision-making, including standard setting, determination of emission controls, and mitigation of exposures to chemical substances. Risk managers, as well as stakeholders (interested and affected parties), often have limited information regarding assumptions and uncertainty factors in numerical estimates of both hazards and risks. Further, the use of different approaches for addressing uncertainty, which vary in transparency, can lead to a lack of confidence in the scientific underpinning of regulatory decision-making. The overarching goal of this paper, which was developed from an invited participant workshop, is to offer five approaches for presenting toxicity values in a transparent manner in order to improve the understanding, consideration, and informed use of uncertainty by risk assessors, risk managers, and stakeholders. The five approaches for improving the presentation and communication of uncertainty are described using U.S. Environmental Protection Agency's (EPA's) Integrated Risk Information System (IRIS) as a case study. These approaches will ensure transparency in the documentation, development, and use of toxicity values at EPA, the Agency for Toxic Substances and Disease Registry (ATSDR), and other similar assessment programs in the public and private sector. Further empirical testing will help to inform the approaches that will work best for specific audiences and situations. Copyright © 2016 The Authors. Published by Elsevier Ltd.. All rights reserved.

  7. Leadership approach in small size enterprises during crisis time – A case study of two enterprises operating in Russia

    OpenAIRE

    Kirilina, Yulia

    2017-01-01

    Leadership performance has always been an important factor of company success and nowadays this topic gets much attention. The present study aimed at investigation of leadership style and peculiarities during crisis time with special focus on small size enterprises. Within framework of the study several definitions of leadership were considered and reviewed. Furthermore the most prevalent leadership theories (including trait, contingency, behavioral theories as well as transactional and t...

  8. An MDO augmented value-based systems engineering approach to holistic design decision-making: A satellite system case study

    Science.gov (United States)

    Kannan, Hanumanthrao

    The design of large scale complex engineered systems (LSCES) involves hundreds or thousands of designers making decisions at different levels of an organizational hierarchy. Traditionally, these LSCES are designed using systems engineering methods and processes, where the preferences of the stakeholder are flowed down the hierarchy using requirements that act as surrogates for preference. Current processes do not provide a system level guidance to subsystem designers. Value-Driven Design (VDD) offers a new perspective on complex system design, where the value preferences of the stakeholder are communicated directly through a decomposable value function, thereby providing a mechanism for improved system consistency. Requirements-based systems engineering approaches do not offer a mathematically rigorous way to capture the couplings present in the system. Multidisciplinary Design Optimization (MDO) was specifically developed to address couplings in both analysis and optimization thereby enabling physics-based consistency. MDO uses an objective function with constraints but does not provide a way to formulate the objective function. Current systems engineering processes do not provide a mathematically sound way to make design decisions when designers are faced with uncertainties. Designers tend to choose designs based on their preferences towards risky/uncertain designs, and past research has shown that there needs to be a consistency in risk preferences to enable design decisions that are consistent with stakeholder's desires. This research exploits the complimentary nature of VDD, MDO and Decision Analysis (DA) to enable consistency in communication of system preferences, consistency in physics and consistency in risk preferences. The role of VDD in this research is in formulating a value function for true preferences, whereas the role of MDO is to capture couplings and enable optimization using the value function, and the role of DA is to enable consistent design

  9. Strategic Planning in the Business Enterprise of Christian Colleges and Universities: A Multi-Case Study Approach

    Science.gov (United States)

    Fletcher, Wayne Lewis

    2013-01-01

    Many tuition-driven private colleges and universities struggled for economic survival in the first decade of this millennium. The current study views higher education from a two-good framework that posits that every college and university provides teaching and service for the societal good while generating revenue from traditional business-like…

  10. Ecological networks as a new approach for nature conservation in Turkey: A case study of Izmir Province

    NARCIS (Netherlands)

    Hepcan, C.C.; Bouwma, I.M.; Jongman, R.H.G.; Ozkan, M.B.

    2009-01-01

    This paper aims to identify and evaluate a potential ecological network including core areas and large-scale corridors in the ¿zmir Province and its surrounding areas, Turkey. It is one of the first studies on the connectivity for mammal species and the detection of potential ecological corridors

  11. A Case Study of the Effects of a School-Based Wraparound Approach on Students with Behavioral Difficulties

    Science.gov (United States)

    James, Jennifer Mills

    2011-01-01

    The purpose of this study was to investigate the effects of wraparound services on students' classroom behavior, social behavior, emotional functioning, and academic skills. As a philosophy and a process, wraparound services support the student, family, and teachers by organizing and blending natural supports, interagency services, and behavioral…

  12. Enactive Approach and Dual-Tasks for the Treatment of Severe Behavioral and Cognitive Impairment in a Person with Acquired Brain Injury: A Case Study.

    Science.gov (United States)

    Martínez-Pernía, David; Huepe, David; Huepe-Artigas, Daniela; Correia, Rut; García, Sergio; Beitia, María

    2016-01-01

    One of the most important sequela in persons who suffer from acquired brain injury is a behavioral disorder. To date, the primary approaches for the rehabilitation of this sequela are Applied Behavior Analysis, Cognitive-Behavior Therapy, and Comprehensive-Holistic Rehabilitation Programs. Despite this theoretical plurality, none of these approaches focuses on rehabilitating behavioral disorders considering the relation between affordance and environmental adaptation. To introduce this therapeutic view to neurorehabilitation, we apply the theoretical tenets of the enactive paradigm to the rehabilitation of a woman with severe behavioral and cognitive impairment. Over seventeen sessions, her behavioral and cognitive performance was assessed in relation to two seated affordances (seated on a chair and seated on a ball 65 cm in diameter) and the environmental adaptation while she was working on various cognitive tasks. These two seated affordances allowed to incorporate the theoretical assumptions of the enactive approach and to know how the behavior and the cognition were modified based on these two postural settings and the environmental adaptation. The findings indicate that the subject exhibited better behavioral (physical and verbal) and cognitive (matching success and complex task) performances when the woman worked on the therapeutic ball than when the woman was on the chair. The enactive paradigm applied in neurorehabilitation introduces a level of treatment that precedes behavior and cognition. This theoretical consideration allowed the discovery of a better relation between a seated affordance and the environmental adaptation for the improvement behavioral and cognitive performance in our case study.

  13. A Socio-Ecological Approach to GIS Least-Cost Modelling for Regional Mining Infrastructure Planning: A Case Study from South-East Sulawesi, Indonesia

    Directory of Open Access Journals (Sweden)

    Alex M. Lechner

    2017-01-01

    Full Text Available Regional planning approaches to mining infrastructure aim to reduce the conflict associated with mining operations and existing land uses, such as urban areas and biodiversity conservation, as well as the cumulative impacts that occur offsite. In this paper, we describe a method for conducting Geographical Information System (GIS least-cost path and least-cost corridor analysis for linear mining infrastructure, such as roads. Least-cost path analysis identifies the optimal pathways between two locations as a function of the cost of traveling through different land use/cover types. In a case study from South-East Sulawesi, Indonesia, we identify potential linear networks for road infrastructure connecting mines, smelters, and ports. The method used interview data from government officials to characterise their orientation (perceived importance and positive/negative attitude toward the social and environmental factors associated with mining infrastructure. A cost-surface was constructed by integrating spatial layers representing the social and environmental factors to identify areas that should be avoided and areas that were compatible with linear infrastructure using the least-cost path analysis. We compared infrastructure scenario outputs from local and national government officials by the degree of spatial overlap and found broad spatial agreement for infrastructure corridors. We conclude by discussing this approach in relation to the wider social-ecological and mine planning literature and how quantitative approaches can reduce the conflict associated with infrastructure planning.

  14. Attitudes towards forest, biomass and certification--a case study approach to integrate public opinion in Japan.

    Science.gov (United States)

    Kraxner, Florian; Yang, Jue; Yamagata, Yoshiki

    2009-09-01

    The purpose of this study was to contribute to filling the knowledge gap in public opinion and knowledge about forest and its certification in Japan, as well as to identify key elements and the possible role of public opinion within integrated bottom-up policies, bridging the sectors of forest, environment and energy. For the study 1930 questionnaires were disseminated in a small town in early 2007. Results from the statistical analysis indicated that forest was perceived as an ecosystem with a protective function against e.g. soil erosion or flooding, rather than a place that might serve for wood production and providing jobs. Forest certification and bioenergy from forest were identified as key elements for future integrated bottom-up policies that need to concentrate on facilitating the linkage between forestry and renewable energy as well as on promoting environmentally sound management and forest certification.

  15. An ethical approach to socio-economic information sources in ongoing vulnerability and resilience studies: the Mount Cameroon case

    Directory of Open Access Journals (Sweden)

    Maria Ilaria Pannaccione Apa

    2012-07-01

    Full Text Available The study of the vulnerability of facing natural and man-made hazards, with the related resilient answers belong to the complex and articulate field of social sciences called ‘Disaster Anthropology’. Vulnerability is generally defined as a weak point in facing an aggressive event that is difficult to manage. Resilience is the subsequent capacity for self-repair after a sustained natural or anthropogenic stress. Consequently, the theoretical model of economic resilience is the ability to restore an economic background that can support the gradual recovery of social benefits following a disaster. Moreover, the presence in the territory of different systems of production (natural eco-systems and/or technical systems should allow multi-resilient communities. The mathematical structure of these economic theorems makes their practical application difficult inside an ethno-anthropological context, as it conflicts with cultural variables of the socio-structural fabric. An example can be given by some urban and rural family structures that are settled around the Mount Cameroon volcano (southwest Cameroon, in which the general psychological pressure increases because of both the constant exposure to natural hazards and the vulnerability arising from its social environment (e.g. castes, forced housing allocation, cultural estrangement to local chiefdom. Therefore, the rational heuristic model to be adopted in this social vulnerability study is performed by several combined analyses that have many interpretive obstacles. In 2009, within FP7-MIA-VITA, the first fieldwork mission for the study of socio-economic development of communities living around Mount Cameroon was launched. This completed 108 interviews across several social groups of different ethnicities and religions. The resulting information is being re-tested and verified from the second fieldwork mission in 2011, for completion of the study area.

  16. Towards a contextual approach to the place–homeless survival nexus: An exploratory case study of Los Angeles County

    OpenAIRE

    Marr, Matthew D.; Deverteuil, Geoffrey; Snow, David

    2009-01-01

    The characteristics of the immediate locale greatly affect the ability of homeless people to adapt to life on the street and in shelters, with different types of places nurturing different circumstances for survival. Current conceptualizations of the place–survival nexus are too narrow, relying on small-scale, intensive studies of particular places that are known to sustain homeless survival while ignoring more suburban and exurban locales, as well as failing to set these places o...

  17. A Case Study Approach On Indian Companies And Global Companies Entry In Foreign Markets An Analysis Of Glocalization Strategies

    OpenAIRE

    Fernandes, Semila

    2013-01-01

    The present paper involved a study on Glocal communication strategy adopted by select global companies while foraying into India and Indian companies foray into the foreign markets. Glocalization concept in specific terms implies Think Global and Act Local which has been developed through Japanese business practices. The requirement of this global localization idea arrived in the late 1980s to bridge the gap between local, regional, national, global management of the businesses 20.PROBLEM STA...

  18. Electricity Demand Projection Using a Path-Coefficient Analysis and BAG-SA Approach: A Case Study of China

    Directory of Open Access Journals (Sweden)

    Qunli Wu

    2017-01-01

    Full Text Available Path-coefficient analysis is utilized to investigate the direct and indirect effects of economic growth, population growth, urbanization rate, industrialization level, and carbon intensity on electricity demand of China. To improve the projection accuracy of electricity demand, this study proposes a hybrid bat algorithm, Gaussian perturbations, and simulated annealing (BAG-SA optimization method. The proposed BAG-SA algorithm not only inherits the simplicity and efficiency of the standard BA with a capability of searching for global optimality but also enhances local search ability and speeds up the global convergence rate. The BAG-SA algorithm is employed to optimize the coefficients of the multiple linear and quadratic forms of electricity demand estimation model. Results indicate that the proposed algorithm has higher precision and reliability than the coefficients optimized by other single-optimization methods, such as genetic algorithm, particle swarm optimization algorithm, or bat algorithm. And the quadratic form of BAG-SA electricity demand estimation model has better fitting ability compared with the multiple linear form of the model. Therefore, the quadratic form of the model is applied to estimate electricity demand of China from 2016 to 2030. The findings of this study demonstrate that China’s electricity demand will reach 14925200 million KWh in 2030.

  19. Distribution network design under demand uncertainty using genetic algorithm and Monte Carlo simulation approach: a case study in pharmaceutical industry

    Science.gov (United States)

    Izadi, Arman; Kimiagari, Ali Mohammad

    2014-05-01

    Distribution network design as a strategic decision has long-term effect on tactical and operational supply chain management. In this research, the location-allocation problem is studied under demand uncertainty. The purposes of this study were to specify the optimal number and location of distribution centers and to determine the allocation of customer demands to distribution centers. The main feature of this research is solving the model with unknown demand function which is suitable with the real-world problems. To consider the uncertainty, a set of possible scenarios for customer demands is created based on the Monte Carlo simulation. The coefficient of variation of costs is mentioned as a measure of risk and the most stable structure for firm's distribution network is defined based on the concept of robust optimization. The best structure is identified using genetic algorithms and 14 % reduction in total supply chain costs is the outcome. Moreover, it imposes the least cost variation created by fluctuation in customer demands (such as epidemic diseases outbreak in some areas of the country) to the logistical system. It is noteworthy that this research is done in one of the largest pharmaceutical distribution firms in Iran.

  20. Case Study of the Triad Approach: Expedited Characterization of Petroleum Constituents and PCBs Using Test Kits and a Mobile Chromatography Laboratory at the Former Cos Cob Power Plant Site

    Science.gov (United States)

    The case study was developed as part of EPA's ongoing initiative to promote the use of an integrated Triad approach to limit decision uncertainty at hazardous waste sites through the use of sound science.

  1. Bridging the research to practice gap: A case study approach to understanding eıbı supports and barriers in Swedish preschools

    Directory of Open Access Journals (Sweden)

    Lise Roll-Petterson

    2016-12-01

    Full Text Available The present study examined proximal and distal barriers and supports within the Swedish service system that may affect implementation of early and intensive behavioral intervention (EIBI for children with autism. A case study approach with roots in ethnography was chosen to explore this issue. Two preschools exemplifying ‘high quality practice’ were studied and information was collected through multiple sources during a 12 month period, this included participant observations, direct observations, semi-structured interviews with key informants; paraprofessionals, parents, special educators, habilitation specialists and a focus group interview. Interview transcripts and field notes were combined and analyzed using an abductive grounded theory approach. Findings highlight the relevance of researchers understanding and taking into consideration the effect that distal variables have on implementation within proximal settings. A theoretical model of factors affecting implementation was conceptualised to include: staff entry knowledge and competence, development through supervision, the role of the preschool administrator, as well as distal influences and inter-organizational tensions, values, and bridges. Findings are discussed within the context of implementation science. Implications for future research are discussed as well as areas in need of further development to bridge the gap between research and practice.

  2. Prevention, detection, and response to anthrax outbreak in Northern Tanzania using one health approach: A case study of Selela ward in Monduli district

    Directory of Open Access Journals (Sweden)

    Elibariki R. Mwakapeje

    2017-11-01

    Full Text Available Background: Anthrax is an infectious fatal zoonotic disease caused by Bacillus anthracis. Anthrax outbreak was confirmed in samples of wild animals following rumors of the outbreak in wild animals, livestock, and humans in Selela ward, Monduli district of Northern Tanzania. Therefore, a multi-sectorial team was deployed for outbreak response in the affected areas. Objectives: The aim of the response was to manage the outbreak in a One Health approach and specifically: (i To determine the magnitude of anthrax outbreak in humans, livestock, and wild animals in Selela ward, (ii to assess the outbreak local response capacity, (iii to establish mechanisms for safe disposal of animal carcasses in the affected areas, and (iv to mount effective control and preventive strategies using One Health approach in the affected areas. Materials and Methods: This was a cross-sectional field survey using: (i Active searching of suspected human cases at health facilities and community level, (ii physical counting and disposal of wild animal carcasses in the affected area, (iii collection of specimens from suspected human cases and animal carcasses for laboratory analysis, and (iv meetings with local animal and human health staff, political, and traditional leaders at local levels. We analyzed data by STATA software, and a map was created using Quantum GIS software. Results: A total of 21 humans were suspected, and most of them (62% being from Selela ward. The outbreak caused deaths of 10 cattle, 26 goats, and three sheep, and 131 wild animal carcasses were discarded the majority of them being wildebeest (83%. Based on laboratory results, three blood smears tested positive for anthrax using Giemsa staining while two wildebeest samples tested positive and five human blood samples tested negative for anthrax using quantitative polymerase chain reaction techniques. Clinical forms of anthrax were also observed in humans and livestock which suggest that wild animals may

  3. The Determinants of Market Share, Case study of Iranian food and beverage industries, (A Panal Data Approach

    Directory of Open Access Journals (Sweden)

    A. Dehghani

    2015-05-01

    Full Text Available This paper investigates the effects of advertising, profitability, concentration and Research & Development on the Market Share of Iranian Great food and beverage industries during the period of 2000-2011. For this purpose, we used the more than 50 employee's statistics of industrial 4- digit firms and panel data technique for estimating the model. The main results of this paper reveal that, the elasticity of market share with respect to profitability is greater than of other explanatory variables such as advertising and R&D. Moreover the results indicate that concentration has positive and significant effect on the Market Share in the Iranian Great food and beverage industries. Thus, the main policy recommendations of this study is that Firms and business executives responsible for providing the necessary foundation for the field of research and development costs, advertising costs, and increase profitability in the Iranian Great food and beverage industries provide And there by helpt hem to increase their market share.

  4. A Novel Multi-Approach Protocol for the Characterization of Occupational Exposure to Organic Dust—Swine Production Case Study

    Directory of Open Access Journals (Sweden)

    Carla Viegas

    2017-12-01

    Full Text Available Swine production has been associated with health risks and workers’ symptoms. In Portugal, as in other countries, large-scale swine production involves several activities in the swine environment that require direct intervention, increasing workers’ exposure to organic dust. This study describes an updated protocol for the assessment of occupational exposure to organic dust, to unveil an accurate scenario regarding occupational and environmental risks for workers’ health. The particle size distribution was characterized regarding mass concentration in five different size ranges (PM0.5, PM1, PM2.5, PM5, PM10. Bioburden was assessed, by both active and passive sampling methods, in air, on surfaces, floor covering and feed samples, and analyzed through culture based-methods and qPCR. Smaller size range particles exhibited the highest counts, with indoor particles showing higher particle counts and mass concentration than outdoor particles. The limit values suggested for total bacteria load were surpassed in 35.7% (10 out of 28 of samples and for fungi in 65.5% (19 out of 29 of samples. Among Aspergillus genera, section Circumdati was the most prevalent (55% on malt extract agar (MEA and Versicolores the most identified (50% on dichloran glycerol (DG18. The results document a wide characterization of occupational exposure to organic dust on swine farms, being useful for policies and stakeholders to act to improve workers’ safety. The methods of sampling and analysis employed were the most suitable considering the purpose of the study and should be adopted as a protocol to be followed in future exposure assessments in this occupational environment.

  5. Assessment of Long-Term Evolution of Groundwater Hydrochemical Characteristics Using Multiple Approaches: A Case Study in Cangzhou, Northern China

    Directory of Open Access Journals (Sweden)

    Wei Li

    2015-03-01

    Full Text Available Water shortage is severe in the North China Plain (NCP. In addition to a deficiency of water resources, deterioration of groundwater quality should be of great concern. In this study, hydrogeological analysis was conducted in combination with principal component analysis, correlation analysis and the co-kriging method to identify factors controlling the content of major ions and total dissolved solids (TDS in areal shallow and deep groundwater and to assess groundwater evolution in Cangzhou, China. The results suggested that groundwater quality degradation occurred and developed in the study area, as indicated by increasing concentrations of major ions, TDS and hardness in both shallow and deep groundwater. In shallow groundwater, whose hydrochemical water types changed from HCO3–Ca.Na.Mg and HCO3.Cl–Na in the west (Zone II to Cl.SO4–Na and Cl–Na in the east (Zone III. Areas with TDS concentrations between 1500 and 2000 mg/L occupied 79.76% of the total in the 1980s, while areas with a TDS concentration ranging from 2500 to 3000 mg/L comprised 59.11% of the total in the 2010s. In deep groundwater, the area with TDS over 1000 mg/L expanded from 5366.39 km2 in the 1960s to 7183.52 km2 in the 2010s. Natural processes (water-rock interactions and anthropogenic activities (groundwater exploitation were the dominant factors controlling the major ions’ content in local groundwater. Dissolution of dolomite, calcite, feldspar and gypsum were the primary sources of major ions in groundwater, and the ion exchange reaction had a strong effect on the cation content, especially for deep groundwater.

  6. Adherence to Dietary Approaches to Stop Hypertension (DASH) Dietary Pattern in Relation to Chronic Obstructive Pulmonary Disease (COPD): A Case-Control Study.

    Science.gov (United States)

    Ardestani, Mohammad Emami; Onvani, Shokouh; Esmailzadeh, Ahmad; Feizi, Awat; Azadbakht, Leila

    2017-01-01

    This case-control study was designed to investigate the association between adherences to the Dietary Approaches to Stop Hypertension (DASH) diet in patients with chronic obstructive pulmonary disease (COPD) in comparison to subjects without COPD. This is a case-control study. Usual dietary intake was assessed using a validated food frequency questionnaire. Lung function was evaluated with spirometry testing, and one of the researchers inquired about other respiratory symptoms, including chronic cough, sputum, and breathlessness. Adherence to the DASH dietary pattern was assessed according to the Fung method. This study was conducted at Alzahra University Hospital of Isfahan, Iran, in 2015. Eight-four patients with COPD and 80 subjects without a history of COPD participated in study. The mean age of participants was 57 years. Average smoking in the case group was about 27.5 pack-years. Spirometry tests including forced expiratory volume in 1 second (FEV 1 ), forced vital capacity (FVC), and FEV 1 /FVC were significantly lower in patients with COPD (p = 0.0001). Among COPD symptoms, cough was significantly decreased across tertiles of DASH score (p = 0.03). Significant differences were found for DASH score between patients with COPD and control subjects (19.82 + 3.63 vs 21.13 + 3.82, p = 0.02). Vitamin C, vitamin E, and dietary fiber intake were lower in patients with COPD (144.32 + 70.51 vs 166.97 + 71.88, p = 0.04, 7.49 + 3.91 vs 8.72 + 3.21, p = 0.02 and 19.34 + 7.05 vs 22.19 + 7.87, p = 0.01, respectively). We observed that adherence to a DASH dietary pattern among patients with COPD was significantly lower compared to the control group. Cough was significantly decreased by increments in adherence to a DASH dietary pattern.

  7. Approaching a Scientific Consensus on the Association between Allergies and Glioma Risk: A Report from the Glioma International Case-Control Study.

    Science.gov (United States)

    Amirian, E Susan; Zhou, Renke; Wrensch, Margaret R; Olson, Sara H; Scheurer, Michael E; Il'yasova, Dora; Lachance, Daniel; Armstrong, Georgina N; McCoy, Lucie S; Lau, Ching C; Claus, Elizabeth B; Barnholtz-Sloan, Jill S; Schildkraut, Joellen; Ali-Osman, Francis; Sadetzki, Siegal; Johansen, Christoffer; Houlston, Richard S; Jenkins, Robert B; Bernstein, Jonine L; Merrell, Ryan T; Davis, Faith G; Lai, Rose; Shete, Sanjay; Amos, Christopher I; Melin, Beatrice S; Bondy, Melissa L

    2016-02-01

    Several previous studies have found inverse associations between glioma susceptibility and a history of allergies or other atopic conditions. Some evidence indicates that respiratory allergies are likely to be particularly relevant with regard to glioma risk. Using data from the Glioma International Case-Control Study (GICC), we examined the effects of respiratory allergies and other atopic conditions on glioma risk. The GICC contains detailed information on history of atopic conditions for 4,533 cases and 4,171 controls, recruited from 14 study sites across five countries. Using two-stage random-effects restricted maximum likelihood modeling to calculate meta-analysis ORs, we examined the associations between glioma and allergy status, respiratory allergy status, asthma, and eczema. Having a history of respiratory allergies was associated with an approximately 30% lower glioma risk, compared with not having respiratory allergies (mOR, 0.72; 95% confidence interval, 0.58-0.90). This association was similar when restricting to high-grade glioma cases. Asthma and eczema were also significantly protective against glioma. A substantial amount of data on the inverse association between atopic conditions and glioma has accumulated, and findings from the GICC study further strengthen the existing evidence that the relationship between atopy and glioma is unlikely to be coincidental. As the literature approaches a consensus on the impact of allergies in glioma risk, future research can begin to shift focus to what the underlying biologic mechanism behind this association may be, which could, in turn, yield new opportunities for immunotherapy or cancer prevention. ©2016 American Association for Cancer Research.

  8. Artificial intelligence based approach to forecast PM2.5 during haze episodes: A case study of Delhi, India

    Science.gov (United States)

    Mishra, Dhirendra; Goyal, P.; Upadhyay, Abhishek

    2015-02-01

    Delhi has been listed as the worst performer across the world with respect to the presence of alarmingly high level of haze episodes, exposing the residents here to a host of diseases including respiratory disease, chronic obstructive pulmonary disorder and lung cancer. This study aimed to analyze the haze episodes in a year and to develop the forecasting methodologies for it. The air pollutants, e.g., CO, O3, NO2, SO2, PM2.5 as well as meteorological parameters (pressure, temperature, wind speed, wind direction index, relative humidity, visibility, dew point temperature, etc.) have been used in the present study to analyze the haze episodes in Delhi urban area. The nature of these episodes, their possible causes, and their major features are discussed in terms of fine particulate matter (PM2.5) and relative humidity. The correlation matrix shows that temperature, pressure, wind speed, O3, and dew point temperature are the dominating variables for PM2.5 concentrations in Delhi. The hour-by-hour analysis of past data pattern at different monitoring stations suggest that the haze hours were occurred approximately 48% of the total observed hours in the year, 2012 over Delhi urban area. The haze hour forecasting models in terms of PM2.5 concentrations (more than 50 μg/m3) and relative humidity (less than 90%) have been developed through artificial intelligence based Neuro-Fuzzy (NF) techniques and compared with the other modeling techniques e.g., multiple linear regression (MLR), and artificial neural network (ANN). The haze hour's data for nine months, i.e. from January to September have been chosen for training and remaining three months, i.e., October to December in the year 2012 are chosen for validation of the developed models. The forecasted results are compared with the observed values with different statistical measures, e.g., correlation coefficients (R), normalized mean square error (NMSE), fractional bias (FB) and index of agreement (IOA). The performed

  9. Employees’ Involuntary Non-Use of ICT Influenced by Power Differences: A Case Study with the Grounded Theory Approach

    Directory of Open Access Journals (Sweden)

    Thale Kvernberg Andersen

    2015-07-01

    Full Text Available Power differences affect implementation of information and communication technology (ICT in a way that creates differences in ICT use. Involuntary non-use of new ICT at work occurs when employees want to use the new technology, but are unable to due to factors beyond their control. Findings from an in-depth qualitative study show how involuntary non-use of new ICT can be attributed to power differences between occupational groups in the same organization. The findings suggest that experience is a moderating variable and that closeness to formal power holders as well as closeness to the new technology increases the probability for expert control of the ICT-organization processes. These power differences favor ICT experts over ICT novices and result in a high-quality learning environment for the ICT experts characterized by autonomy, inclusion, and adequate work processes and technological solutions. The ICT novices try to navigate in a learning-hostile work environment characterized by marginalization through expert control, isolation, and inadequate work processes and technological solutions. This led to involuntary non-use by the ICT novices, while the experts became more proficient in ICT use. These findings give managers facing a technological organizational change tools to understand important mechanisms for implementing the change in their own organization, and help them take the right actions to integrate new technology and new organization of work.

  10. Multilayer perceptron neural network-based approach for modeling phycocyanin pigment concentrations: case study from lower Charles River buoy, USA.

    Science.gov (United States)

    Heddam, Salim

    2016-09-01

    This paper proposes multilayer perceptron neural network (MLPNN) to predict phycocyanin (PC) pigment using water quality variables as predictor. In the proposed model, four water quality variables that are water temperature, dissolved oxygen, pH, and specific conductance were selected as the inputs for the MLPNN model, and the PC as the output. To demonstrate the capability and the usefulness of the MLPNN model, a total of 15,849 data measured at 15-min (15 min) intervals of time are used for the development of the model. The data are collected at the lower Charles River buoy, and available from the US Environmental Protection Agency (USEPA). For comparison purposes, a multiple linear regression (MLR) model that was frequently used for predicting water quality variables in previous studies is also built. The performances of the models are evaluated using a set of widely used statistical indices. The performance of the MLPNN and MLR models is compared with the measured data. The obtained results show that (i) the all proposed MLPNN models are more accurate than the MLR models and (ii) the results obtained are very promising and encouraging for the development of phycocyanin-predictive models.

  11. An approach to industrial water conservation--a case study involving two large manufacturing companies based in Australia.

    Science.gov (United States)

    Agana, Bernard A; Reeve, Darrell; Orbell, John D

    2013-01-15

    This study presents the application of an integrated water management strategy at two large Australian manufacturing companies that are contrasting in terms of their respective products. The integrated strategy, consisting of water audit, pinch analysis and membrane process application, was deployed in series to systematically identify water conservation opportunities. Initially, a water audit was deployed to completely characterize all water streams found at each production site. This led to the development of a water balance diagram which, together with water test results, served as a basis for subsequent enquiry. After the water audit, commercially available water pinch software was utilized to identify possible water reuse opportunities, some of which were subsequently implemented on site. Finally, utilizing a laboratory-scale test rig, membrane processes such as UF, NF and RO were evaluated for their suitability to treat the various wastewater streams. The membranes tested generally showed good contaminant rejection rates, slow flux decline rates, low energy usage and were well suited for treatment of specific wastewater streams. The synergy between the various components of this strategy has the potential to reduce substantial amounts of Citywater consumption and wastewater discharge across a diverse range of large manufacturing companies. Crown Copyright © 2012. Published by Elsevier Ltd. All rights reserved.

  12. Conservation Management of Agriculture Land using Geospatial Approach (A Case Study in the Bone Watershed, Gorontalo Province, Indonesia

    Directory of Open Access Journals (Sweden)

    Maryati Sri

    2018-01-01

    Full Text Available Bone Watershed is one of the major watersheds in Gorontalo Province. Bone watershed has a very important role for the people of Gorontalo Province. The role of Bone Watershed is mainly related to the providing clean water, producing oxygen, controlling flood, providing habitat for endemic flora fauna and other environmental functions. The role of Bone Watershed for the community’s economic sector is also very important, the Bone watershed provides livelihood for surrounding communities includes fertile land resources for agriculture and plantations, forest products, and livestock feed. This research is important considering the Bone watershed has limited availability of land for agriculture and the high risk of natural disasters such as floods and landslides. Geospatial data includes topography map, landform map, soil map, integrated with field survey results and soil properties were analized to determine conservation management of agriculture land in the Bone Watershed, Gorontalo Province, Indonesia. The result of this study shows that based on soil properties and physical land characteristics, land use for agriculture should consider appropriate conservation techniques, land capability and respect to local wisdom.

  13. An approach to clarifying public preferences about silvicultural systems: A case study concerning group selection and clear-cutting

    International Nuclear Information System (INIS)

    Lindhagen, A.

    1996-01-01

    To avoid large clear-cut areas in recreation areas, three experiments where group selection was used to transform even-aged stands of Norway spruce (Picea abies (L.) Karst.) into uneven-aged stands were started. Two of these group selection stands were compared with adjacent forests managed by the clear-cut system on the basis of the opinion of seven voluntary groups. The respondents have given their judgement of the forest sites in a semantic differential test. All parties made assessments when visiting the forest sites. In addition, two of the groups made assessments of black and white photographs representing the forest sites. The methods used were found to be both reliable and valid. A very low correlation was obtained between the assessment of whole forest areas and the mean value of the assessments of the stands within the same area. According to this study, the group selection method is preferable to clear-cutting in even-aged stands of Norway spruce if the attitude of the voluntary groups are to be met. 31 refs, 4 figs, 9 tabs

  14. A proteomic approach for studying insect phylogeny: CAPA peptides of ancient insect taxa (Dictyoptera, Blattoptera as a test case

    Directory of Open Access Journals (Sweden)

    Gäde Gerd

    2009-03-01

    Full Text Available Abstract Background Neuropeptide ligands have to fit exactly into their respective receptors and thus the evolution of the coding regions of their genes is constrained and may be strongly conserved. As such, they may be suitable for the reconstruction of phylogenetic relationships within higher taxa. CAPA peptides of major lineages of cockroaches (Blaberidae, Blattellidae, Blattidae, Polyphagidae, Cryptocercidae and of the termite Mastotermes darwiniensis were chosen to test the above hypothesis. The phylogenetic relationships within various groups of the taxon Dictyoptera (praying mantids, termites and cockroaches are still highly disputed. Results Tandem mass spectrometry of neuropeptides from perisympathetic organs was used to obtain sequence data of CAPA peptides from single specimens; the data were analysed by Maximum Parsimony and Bayesian Interference. The resulting cladograms, taking 61 species into account, show a topology which is in general agreement with recent molecular and morphological phylogenetic analyses, including the recent phylogenetic arrangement placing termites within the cockroaches. When sequence data sets from other neuropeptides, viz. adipokinetic hormones and sulfakinins, were included, the general topology of the cladogram did not change but bootstrap values increased considerably. Conclusion This study represents the first comprehensive survey of neuropeptides of insects for solely phylogenetic purposes and concludes that sequences of short neuropeptides are suitable to complement molecular biological and morphological data for the reconstruction of phylogenetic relationships.

  15. Management of Water and Fertilizer Consumption Using Bio-Economic Approach: A Case Study of Irrigation and Drainage Dorudzan

    International Nuclear Information System (INIS)

    Sheikhzeinoddin, A.; Esmaeili, A.; Zibaei, M.

    2016-01-01

    Today keep increasing the use of chemical fertilizer and water is an effort to improve yield, while overuse of fertilizer is making formerly arable land unusable but led to degrading the quality of water and serious problems for environmental. Hence, for accurate management, we require comprehensive and complete information on the economic and environmental impacts of different management methods. So, by using SWAT model were simulated the economic and environmental effects of each management strategies. Then, mathematical programming was used to determine the optimal cropping pattern subject to resources and environmental constraints in irrigation and Drainage Dorudzan. Based on the findings of this study, we can improve the economic and environmental benefits by moving from current status to economic or bio-economic pattern. Also, by moving from economic pattern to bio-economic pattern, 0.31 percent reduction of economic benefit is leading to improve nitrogen losses by 6.58 percent. In other words, we incur the cost equal to 64.5 thousand rials for reduction per kg nitrogen losses.

  16. A Nonlinear Inversion Approach to Map the Magnetic Basement: A Case Study from Central India Using Aeromagnetic Data

    Science.gov (United States)

    Kumar, R.; Bansal, A. R.; Anand, S. P.; Rao, V. K.; Singh, U. K.

    2016-12-01

    The central India region is having complex geology covering various geological units e.g., Precambrian Bastar Craton (including Proterozoic Chhattisgarh Basin, granitic intrusions etc.) and Eastern Ghat Mobile Belt, Gondwana Godavari and Mahanadi Grabens, Late Cretaceous Deccan Traps etc. The central India is well covered by reconnaissance scale aeromagnetic data. We analyzed this data for mapping the basement by dividing into143 overlapping blocks of 100×100km using least square nonlinear inversion method for fractal distribution of sources. The scaling exponents and depth values are optimized using grid search method. We interpreted estimated depths of anomalous sources as magnetic basement and shallow anomalous magnetic sources. The shallow magnetic anomalies are found to vary from 1 to 3km whereas magnetic basement depths are found to vary from 2km to 7km. The shallowest basement depth of 2km found corresponding to Kanker granites a part of Bastar Craton whereas deepest basement depth of 7km is associated with Godavari Graben and south eastern part of Eastern Ghat Mobile Belts near the Parvatipuram Bobbili fault. The variation of magnetic basement, shallow depths and scaling exponent in the region indicate complex tectonic, heterogeneity and intrusive bodies at different depths which is due to different tectonic processes in the region. The detailed basement depth of central India is presented in this study.

  17. Conservation Management of Agriculture Land using Geospatial Approach (A Case Study in the Bone Watershed, Gorontalo Province, Indonesia)

    Science.gov (United States)

    Maryati, Sri; Eraku, Sunarty; Kasim, Muh

    2018-02-01

    Bone Watershed is one of the major watersheds in Gorontalo Province. Bone watershed has a very important role for the people of Gorontalo Province. The role of Bone Watershed is mainly related to the providing clean water, producing oxygen, controlling flood, providing habitat for endemic flora fauna and other environmental functions. The role of Bone Watershed for the community's economic sector is also very important, the Bone watershed provides livelihood for surrounding communities includes fertile land resources for agriculture and plantations, forest products, and livestock feed. This research is important considering the Bone watershed has limited availability of land for agriculture and the high risk of natural disasters such as floods and landslides. Geospatial data includes topography map, landform map, soil map, integrated with field survey results and soil properties were analized to determine conservation management of agriculture land in the Bone Watershed, Gorontalo Province, Indonesia. The result of this study shows that based on soil properties and physical land characteristics, land use for agriculture should consider appropriate conservation techniques, land capability and respect to local wisdom.

  18. DESIGNING A COMPETITIVE ADVANTAGE MODEL WITH TECHNOLOGY ORIENTED APPROACH USING FAHP TECHNIQUE: A CASE STUDY IN COIL INDUSTRY

    Directory of Open Access Journals (Sweden)

    ABDOLHAMID S. GHADIKOLAEI

    2013-04-01

    Full Text Available One of the distinctive attributes of today’s successful companies is having at least one competitive advantage in one known area. Technological competency is an important advantage which helps improve the firm’s competitiveness. In fact, suitable use of new technologies can dramatically influence the innovation speed, decrease the time of product development cycle and also increase the rate of new product introduction. Firm-specific technological competencies help explain why a firm is different, how it changes over time, and whether it is capable of remaining competitive. In this study, technological competency factors (technology management, process technology, product technology are prioritized according to the competitive advantage levels(customer satisfaction, brand reputation, new product introduction, market share and competitive priorities (cost, price, quality, flexibility, time using fuzzy Analytic hierarchy process (FAHP with the aim of maximizing the nonfinancial performance at coil manufacture industry. The results indicate that within Iran coil industry, process technology is of greater importance than technology management and product technology.

  19. Case Study: A Picture Worth a Thousand Words? Making a Case for Video Case Studies

    Science.gov (United States)

    Pai, Aditi

    2014-01-01

    A picture, they say, is worth a thousand words. If a mere picture is worth a thousand words, how much more are "moving pictures" or videos worth? The author poses this not merely as a rhetorical question, but because she wishes to make a case for using videos in the traditional case study method. She recommends four main approaches of…

  20. The Rediscovery and Resurrection of Bunk Johnson – a Grounded Theory Approach: A case study in jazz historiography

    Directory of Open Access Journals (Sweden)

    Richard Ekins, Ph.D., FRSA

    2011-12-01

    Full Text Available This paper was written in the beginning phase of my transitioning from grounded theory sociologist (Ekins, 19971 to grounded theory musicologist (Ekins, 20102. In particular, it provides preliminary data for a grounded theory of ‘managing authenticity’, the core category/basic social process (Glaser, 1978 that has emerged from my ongoing grounded theory work in jazz historiography. It was written whilst I was ‘credentialising’ (Glaser, 2010 my transition to popular music studies and popular musicology. In consequence, it incorporates many aspects that are inimical to classic grounded theory. As with so much of Straussian and so-called constructivist grounded theory (Bryant and Charmaz, 2007, it roots itself in G.H. Mead and a social constructivist symbolic interactionism – inter alia, a legitimising (authenticating strategy. Moreover, as is typical of this mode of conceptualising, the paper fills the void of inadequate classic grounded theorising with less conceptual theorising and more conceptual description. Nevertheless, the article does introduce a number of categories that ‘fit and work’, and have ‘conceptual grab’ (Glaser, 1978; Glaser, 1992. In particular, in terms of my own continuing credentialising as a classic grounded theorist, it sets forth important categories to be integrated into my ongoing work on managing authenticity in New Orleans revivalist jazz, namely, ‘trailblazing’, ‘mythologizing’, ‘debunking’, and ‘marginalising’, in the context of the ‘rediscovering’ and ‘resurrecting’ of a jazz pioneer. More specifically, the paper is offered to classic grounded theorists as a contribution to preliminary generic social process analysis in the substantive area of jazz historiography.

  1. 331 cases of clinically node-negative supraglottic carcinoma of the larynx: a study of a modest size fixed field radiotherapy approach

    International Nuclear Information System (INIS)

    Sykes, Andrew J.; Slevin, Nicholas J.; Gupta, Nirmal K.; Brewster, Allison E.

    2000-01-01

    Purpose: For node-negative supraglottic carcinoma of the larynx, radiotherapy with surgery in reserve commonly provides very good results in terms of both local control and survival, while preserving function. However uncertainty exists over the treatment of the node-negative neck. Elective whole neck radiotherapy, while effective, may be associated with significant morbidity. The purpose of this study was to examine our practice of treating a modest size, fixed field to a high biologically effective dose and compare it with the patterns of recurrence from other centers that use different dose/volume approaches. Methods and Materials: Over a 10-year period 331 patients with node-negative supraglottic carcinoma of the larynx were treated with radiotherapy at the Christie Hospital Manchester. Patients were treated with doses of 50-55 Gy in 16 fractions over 3 weeks. Data were collected retrospectively for local and regional control, survival, and morbidity. Results: Overall local control, after surgical salvage in 17 cases, was 79% (T1-92%, T2-81%, T3-67%, T4-73%). Overall regional lymph node control, after surgical salvage in 13 cases, was 84% (T1-91%, T2-88%, T3-81%, T4-72%). Five-year crude survival was 50%, but after correcting for intercurrent deaths was 70% (T1-83%, T2-78%, T3-53%, T4-61%). Serious morbidity requiring surgery was seen in 7 cases (2.1%) and was related to prescribed dose (50 Gy-0%, 52.5 Gy-1.3%, 55 Gy-3.4%). Discussion: Our results confirm that treating a modest size, fixed field to a high biologically effective dose is highly effective. It enables preservation of the larynx in most cases, with acceptable regional control and no loss of survival compared to whole neck radiotherapy regimes

  2. Approach to derive doses for case-control studies of lung cancer and leukaemia among workers internally exposed to uranium and plutonium

    International Nuclear Information System (INIS)

    Thierry-Chef, Isabelle; Berard, Philippe; Bingham, Derek; Blanchardon, Eric; Challeton-de Vathaire, Cecile; Birchall, Alan; Puncher, Matthew; Bull, Richard; Hurtgen, Christian; Riddell, Tony; Vrijheid, Martine; Cardis, Elisabeth

    2008-01-01

    Case-control studies are currently conducted in 3 European countries (Belgium, France and the United Kingdom) to estimate the risk of lung cancer and leukaemia in relation to internal exposure to uranium and plutonium amongst workers in the nuclear industry. The project requires calculating doses absorbed by the lung and the bone marrow for many hundreds of cases and controls internally exposed. In order to establish a common approach to dose reconstruction, a detailed dosimetry protocol and a database of individual exposure were set up and will be presented. The dose reconstruction relies heavily on bioassay data, which are usually urine analysis, extending back over 50 years in some cases. Inevitably, data obtained over such a time span are of variable quality. It is important to review the monitoring practices at the various laboratories and to assess the reliability of these data in order to estimate possible biases as well as random uncertainties. Another key step in the reconstruction process is to decide upon the likely intake regimes consistent with the data. Generally, chronic intakes will be assumed and acute intakes will be added only when their existence is supported by operational data. Biokinetic models are used both to calculate intakes from bioassay data and to convert intakes to doses. The ICRP publication 66 respiratory tract model will be used along with the latest systemic models described by ICRP. These will be supplemented by the Leggett 2005 model for plutonium. These various models will be implemented by the code IMBA-Expert. Since it is essential to obtain central estimates for the doses, a particular problem is encountered with datasets consisting only of values below the limit of detection. For these cases Bayesian statistics will be employed using a non-informative prior probability distribution. (author)

  3. Urban Ecological Security Simulation and Prediction Using an Improved Cellular Automata (CA) Approach-A Case Study for the City of Wuhan in China.

    Science.gov (United States)

    Gao, Yuan; Zhang, Chuanrong; He, Qingsong; Liu, Yaolin

    2017-06-15

    Ecological security is an important research topic, especially urban ecological security. As highly populated eco-systems, cities always have more fragile ecological environments. However, most of the research on urban ecological security in literature has focused on evaluating current or past status of the ecological environment. Very little literature has carried out simulation or prediction of future ecological security. In addition, there is even less literature exploring the urban ecological environment at a fine scale. To fill-in the literature gap, in this study we simulated and predicted urban ecological security at a fine scale (district level) using an improved Cellular Automata (CA) approach. First we used the pressure-state-response (PSR) method based on grid-scale data to evaluate urban ecological security. Then, based on the evaluation results, we imported the geographically weighted regression (GWR) concept into the CA model to simulate and predict urban ecological security. We applied the improved CA approach in a case study-simulating and predicting urban ecological security for the city of Wuhan in Central China. By comparing the simulated ecological security values from 2010 using the improved CA model to the actual ecological security values of 2010, we got a relatively high value of the kappa coefficient, which indicates that this CA model can simulate or predict well future development of ecological security in Wuhan. Based on the prediction results for 2020, we made some policy recommendations for each district in Wuhan.

  4. Influential third party on water right conflict: A Game Theory approach to achieve the desired equilibrium (case study: Ilam dam, Iran).

    Science.gov (United States)

    Zanjanian, Hossein; Abdolabadi, Hamid; Niksokhan, Mohammad Hossein; Sarang, Amin

    2018-05-15

    Allocating water to organizational stakeholders poses a vital challenge to water managers. Organizations which benefit from water as the primary factor input attempt to achieve their objectives using cost-effective and quick-return strategies, such as increasing the water rights. In such circumstances, lack of water probably results in the conflict. Recognizing the management approaches, organizational priorities, and the stakeholders' influence power can play a dominant role in analyzing the future of such conflicts. In this paper, we analyzed the conflict of water allocation in Ilam dam among organizational stakeholders. We defined the strategies based on the background of the game and organizational objectives. The influence power of stakeholders and the numerical weights of strategies were quantified based on the expert judgment method. The relative priorities of strategies were then calculated for each state of the conflict. We used the GMCR + model to study the actions of stakeholders. Results suggest that the Jihad Agriculture Organization and the Water and Wastewater Company withdraw more water; hence, there exists no water to meet the environmental water right. In this case, the participation of the third party, such as the Governorship and the Justice can change the future of the conflict, and result in moving to the optimal state. However, results from Inverse GMCR analysis demonstrate that Justice is the most influential third party that can move the conflict towards a desired equilibrium (optimal case). Copyright © 2018 Elsevier Ltd. All rights reserved.

  5. An Approach to Developing a Prediction Model of Fertility Intent among HIV-Positive Women and Men in Cape Town, South Africa: A Case Study

    Science.gov (United States)

    Bai, Dan; Leu, Cheng-Shiun; Mantell, Joanne E.; Exner, Theresa M.; Cooper, Diane; Hoffman, Susie; Kelvin, Elizabeth A.; Myer, Landon; Constant, Debbie; Moodley, Jennifer

    2016-01-01

    As a ‘case-study’ to demonstrate an approach to establishing a fertility-intent prediction model, we used data collected from recently diagnosed HIV-positive women (N=69) and men (N=55) who reported inconsistent condom use and were enrolled in a sexual and reproductive health intervention in public sector HIV care clinics in Cape Town, South Africa. Three theoretically-driven prediction models showed reasonable sensitivity (0.70 to 1.00), specificity (0.66 to 0.94), and area under the receiver operating characteristic curve (0.79 to 0.89) for predicting fertility intent at the six-month visit. A k-fold cross-validation approach was employed to reduce bias due to over-fitting of data in estimating sensitivity, specificity, and area under the curve. We discuss how the methods presented might be used in future studies to develop a clinical screening tool to identify HIV-positive individuals likely to have future fertility intent and who could therefore benefit from sexual and reproductive health counseling around fertility options. PMID:27294266

  6. Technology Development as a Normative Practice: A Meaning-Based Approach to Learning About Values in Engineering-Damming as a Case Study.

    Science.gov (United States)

    Nia, Mahdi G; Harandi, Mehdi F; de Vries, Marc J

    2017-11-10

    Engineering, as a complex and multidimensional practice of technology development, has long been a source of ethical concerns. These concerns have been approached from various perspectives. There are ongoing debates in the literature of the philosophy of engineering/technology about how to organize an optimized view of the values entailed in technology development processes. However, these debates deliver little in the way of a concrete rationale or framework that could comprehensively describe different types of engineering values and their multi-aspect interrelations in real engineering practices. Approaching engineering values from a meaning-based perspective, as in this paper, can be a reliable method of tackling such a controversial problem. This paper therefore proposes that technology development be considered a systemic normative practice and attempts to provide a comprehensive view of various built-in values, their different origins and features, and a way of prioritizing them in real engineering processes. Studying two cases of the Zayandeh Rood Dam and the Abbasi Dam will lead to practical insights into how to understand norms in technology development and incorporate them into engineering practice.

  7. Unpacking the ‘structural’ in a structural approach for HIV prevention among female sex workers: A case study from China

    Science.gov (United States)

    Huang, Yingying; Muessig, Kathryn E.; Zhang, Ning; Maman, Suzanne

    2015-01-01

    Interventions for HIV prevention among female sex workers (FSWs) in China focus on HIV/sexually transmitted infection (STI) and individual behaviour change. An occupational health framework facilitates intervention across an array of health issues FSWs face including HIV/STI, violence, reproductive health, stigma and substance use. Through a case study of a community-based Jiaozhou (JZ) FSW programme, we developed a conceptual framework incorporating global discussions of structural approaches to HIV prevention with the specific social and structural contexts identified among FSWs in China. Based on ethnographic fieldwork between August 2010 and May 2013, we describe the evolution of this programme to its current occupational health focus and unpack the intervention strategies. We describe the critical features of the programme that have fostered success among FSWs including high-quality clinical services provided within a welcoming setting, responsive outreach work through staff and trained FSW peers, interpersonal and community-level engagement aimed at changing the local social and structural environments of sex work and tailored health education materials. This intervention differs from other projects in China by adopting a more holistic approach to FSW health that incorporates social issues. It also demonstrates the feasibility of structural interventions among FSWs even within an environment that has strong anti-prostitution policies. PMID:25742611

  8. Stochastic efficiency: five case studies

    International Nuclear Information System (INIS)

    Proesmans, Karel; Broeck, Christian Van den

    2015-01-01

    Stochastic efficiency is evaluated in five case studies: driven Brownian motion, effusion with a thermo-chemical and thermo-velocity gradient, a quantum dot and a model for information to work conversion. The salient features of stochastic efficiency, including the maximum of the large deviation function at the reversible efficiency, are reproduced. The approach to and extrapolation into the asymptotic time regime are documented. (paper)

  9. A three-step approach for the derivation and validation of high-performing predictive models using an operational dataset: congestive heart failure readmission case study.

    Science.gov (United States)

    AbdelRahman, Samir E; Zhang, Mingyuan; Bray, Bruce E; Kawamoto, Kensaku

    2014-05-27

    The aim of this study was to propose an analytical approach to develop high-performing predictive models for congestive heart failure (CHF) readmission using an operational dataset with incomplete records and changing data over time. Our analytical approach involves three steps: pre-processing, systematic model development, and risk factor analysis. For pre-processing, variables that were absent in >50% of records were removed. Moreover, the dataset was divided into a validation dataset and derivation datasets which were separated into three temporal subsets based on changes to the data over time. For systematic model development, using the different temporal datasets and the remaining explanatory variables, the models were developed by combining the use of various (i) statistical analyses to explore the relationships between the validation and the derivation datasets; (ii) adjustment methods for handling missing values; (iii) classifiers; (iv) feature selection methods; and (iv) discretization methods. We then selected the best derivation dataset and the models with the highest predictive performance. For risk factor analysis, factors in the highest-performing predictive models were analyzed and ranked using (i) statistical analyses of the best derivation dataset, (ii) feature rankers, and (iii) a newly developed algorithm to categorize risk factors as being strong, regular, or weak. The analysis dataset consisted of 2,787 CHF hospitalizations at University of Utah Health Care from January 2003 to June 2013. In this study, we used the complete-case analysis and mean-based imputation adjustment methods; the wrapper subset feature selection method; and four ranking strategies based on information gain, gain ratio, symmetrical uncertainty, and wrapper subset feature evaluators. The best-performing models resulted from the use of a complete-case analysis derivation dataset combined with the Class-Attribute Contingency Coefficient discretization method and a voting

  10. SCA12 case study

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Genetics; Volume 88; Issue 1. Utilizing linkage disequilibrium information from Indian Genome Variation Database for mapping mutations: SCA12 case study. Samira Bahl Ikhlak Ahmed The Indian Genome Variation Consortium Mitali Mukerji. Research Article Volume 88 Issue 1 April 2009 pp 55- ...

  11. Retrospective Case Studies

    Energy Technology Data Exchange (ETDEWEB)

    Wright, Phillip M.

    1977-09-01

    This project, Retrospective Case Studies (RCS) operates directly under DGE's Resource Exploration and Assessment program. The overall objectives of this project are: (1) to improve the general and specific level of understanding of geothermal systems, and (2) to improve tools and technology for geothermal exploration and assessment.

  12. Chaitanya case study

    International Development Research Centre (IDRC) Digital Library (Canada)

    lremy

    sustainability, that began at our inception 12 years ago. This case study ... women. Over the years, we moved towards building a model of sustainable institutions .... poverty alleviation. However, over the last decade, a number of organizations had gained expertise in organizing and managing SHGs and as a result, very few.

  13. A NoSQL–SQL Hybrid Organization and Management Approach for Real-Time Geospatial Data: A Case Study of Public Security Video Surveillance

    Directory of Open Access Journals (Sweden)

    Chen Wu

    2017-01-01

    Full Text Available With the widespread deployment of ground, air and space sensor sources (internet of things or IoT, social networks, sensor networks, the integrated applications of real-time geospatial data from ubiquitous sensors, especially in public security and smart city domains, are becoming challenging issues. The traditional geographic information system (GIS mostly manages time-discretized geospatial data by means of the Structured Query Language (SQL database management system (DBMS and emphasizes query and retrieval of massive historical geospatial data on disk. This limits its capability for on-the-fly access of real-time geospatial data for online analysis in real time. This paper proposes a hybrid database organization and management approach with SQL relational databases (RDB and not only SQL (NoSQL databases (including the main memory database, MMDB, and distributed files system, DFS. This hybrid approach makes full use of the advantages of NoSQL and SQL DBMS for the real-time access of input data and structured on-the-fly analysis results which can meet the requirements of increased spatio-temporal big data linking analysis. The MMDB facilitates real-time access of the latest input data such as the sensor web and IoT, and supports the real-time query for online geospatial analysis. The RDB stores change information such as multi-modal features and abnormal events extracted from real-time input data. The DFS on disk manages the massive geospatial data, and the extensible storage architecture and distributed scheduling of a NoSQL database satisfy the performance requirements of incremental storage and multi-user concurrent access. A case study of geographic video (GeoVideo surveillance of public security is presented to prove the feasibility of this hybrid organization and management approach.

  14. An Informatics Approach to Evaluating Combined Chemical Exposures from Consumer Products: A Case Study of Asthma-Associated Chemicals and Potential Endocrine Disruptors.

    Science.gov (United States)

    Gabb, Henry A; Blake, Catherine

    2016-08-01

    Simultaneous or sequential exposure to multiple environmental stressors can affect chemical toxicity. Cumulative risk assessments consider multiple stressors but it is impractical to test every chemical combination to which people are exposed. New methods are needed to prioritize chemical combinations based on their prevalence and possible health impacts. We introduce an informatics approach that uses publicly available data to identify chemicals that co-occur in consumer products, which account for a significant proportion of overall chemical load. Fifty-five asthma-associated and endocrine disrupting chemicals (target chemicals) were selected. A database of 38,975 distinct consumer products and 32,231 distinct ingredient names was created from online sources, and PubChem and the Unified Medical Language System were used to resolve synonymous ingredient names. Synonymous ingredient names are different names for the same chemical (e.g., vitamin E and tocopherol). Nearly one-third of the products (11,688 products, 30%) contained ≥ 1 target chemical and 5,229 products (13%) contained > 1. Of the 55 target chemicals, 31 (56%) appear in ≥ 1 product and 19 (35%) appear under more than one name. The most frequent three-way chemical combination (2-phenoxyethanol, methyl paraben, and ethyl paraben) appears in 1,059 products. Further work is needed to assess combined chemical exposures related to the use of multiple products. The informatics approach increased the number of products considered in a traditional analysis by two orders of magnitude, but missing/incomplete product labels can limit the effectiveness of this approach. Such an approach must resolve synonymy to ensure that chemicals of interest are not missed. Commonly occurring chemical combinations can be used to prioritize cumulative toxicology risk assessments. Gabb HA, Blake C. 2016. An informatics approach to evaluating combined chemical exposures from consumer products: a case study of asthma

  15. MRI case studies

    International Nuclear Information System (INIS)

    Huggett, S.; Barber, J.

    1989-01-01

    Three case studies are presented to show the value of magnetic resonance imaging used in conjunction with other imaging techniques. In each case MRI proved a vital diagnostic tool and superior to CT in showing firstly the haematoma in a patient with aphasia and right-sided weakness, secondly the size of the disc herniation in a patient with severe leg and ankle pains and thirdly the existence of a metastatic lesion in a patient with a previous history of breast cancer. 11 figs

  16. A STUDY OF ERRORS IN THE THIRD SINGULAR PRONOUNS OF SIMPLE PRESENT TENSE BY USING INTERLANGUAGE ANALYSIS AS AN APPROACH. A CASE STUDY

    Directory of Open Access Journals (Sweden)

    Salmon Pandarangga

    2015-03-01

    Full Text Available The purpose of this study is to analyze factors contributing to errors made in learning English as a target language (TL. Employing a case study research, the participant was interviewed for approximately 30 minutes about daily activities and experiences in learning English. This research focuses in analysing the participant‟s use of third singular pronoun in simple present tense. The findings revealed that errors made by TL learners are mainly influenced by some factorsrelated to their TL‟s and native language‟s (NL knowledge, systems and rules. These factors are coexisted and interconnected in TL learners‟ minds. This is against Robert Lado‟s argument which mentioned that learner made errors in TL learning because of the interference from NL. The study provides pedagogical implications that TL teachers should perceive errors made by the learners as a sign of language learning and development; therefore they should not be discouraged to learn. Also, TL teachers should be aware of their very important roles to help, to guide and to lead the learners‟ progress in learning the TL. The future subsequent studies should consider of involving more sample size over a longer period of time as to obtain to a more generalized finding.

  17. A model of scientific attitudes assessment by observation in physics learning based scientific approach: case study of dynamic fluid topic in high school

    Science.gov (United States)

    Yusliana Ekawati, Elvin

    2017-01-01

    This study aimed to produce a model of scientific attitude assessment in terms of the observations for physics learning based scientific approach (case study of dynamic fluid topic in high school). Development of instruments in this study adaptation of the Plomp model, the procedure includes the initial investigation, design, construction, testing, evaluation and revision. The test is done in Surakarta, so that the data obtained are analyzed using Aiken formula to determine the validity of the content of the instrument, Cronbach’s alpha to determine the reliability of the instrument, and construct validity using confirmatory factor analysis with LISREL 8.50 program. The results of this research were conceptual models, instruments and guidelines on scientific attitudes assessment by observation. The construct assessment instruments include components of curiosity, objectivity, suspended judgment, open-mindedness, honesty and perseverance. The construct validity of instruments has been qualified (rated load factor > 0.3). The reliability of the model is quite good with the Alpha value 0.899 (> 0.7). The test showed that the model fits the theoretical models are supported by empirical data, namely p-value 0.315 (≥ 0.05), RMSEA 0.027 (≤ 0.08)

  18. The H2O20 FREEWAT participated approach for the Follonica-Scarlino aquifer case study. A common space to generate shared knowledge on the value of water

    Directory of Open Access Journals (Sweden)

    Pio Positano

    2017-09-01

    Full Text Available The “Follonica-Scarlino Aquifer” case study is run within the H2020 FREEWAT project by Regione Toscana as partner of an international consortium. FREEWAT aims at promoting water resource management by simplifying the application of the Water Framework Directive and other EU water related Directives. The tool used to reach this target is an open source and public domain GIS integrated modeling environment for the simulation of water quantity and quality in surface water and groundwater. The case study area is located in a coastal plain in the Southern part of Tuscany (Italy and the aquifer system is affected by various issues: in particular, the numerical model created through FREEWAT platform was used to study the problem of aquifer over-exploitation . The deficit in quantity of the water resource is mainly caused by the huge industrial and agricultural abstractions, but drinking water supply during the summer season is also notable. The participatory approach, included in the FREEWAT project, became of crucial importance to gather the huge amount of data about the aquifer system and to create a shared knowledge about water resource. It was carried out through seven focus groups and led the stakeholders to reach an agreement about the scenarios to be explored with FREEWAT software platform. Focus Group 1 to 3 were used to identify the case study objectives. Focus Groups 4 to 6 allowed to assess the water management issues and select the scenarios. The community chose two of the four scenarios that came out from the focus group meetings. Simulations corresponding to these two scenarios have shown, the effectiveness of the proposed technical solutions for achieving the objectives set out in the River Basin Management Plan of the Northern Apennines District. At the end of the focus group cycle, useful suggestions and feedbacks came from stakeholders, to set up a new kind of water management. Some experts working for local industries expressed

  19. A Bayesian approach for evaluation of the effect of water quality model parameter uncertainty on TMDLs: A case study of Miyun Reservoir

    Energy Technology Data Exchange (ETDEWEB)

    Liang, Shidong, E-mail: emblembl@sina.com [School of Environment, Tsinghua University, 1 Qinghuayuan, Haidian District, Beijing 100084 (China); Jia, Haifeng, E-mail: jhf@tsinghua.edu.cn [School of Environment, Tsinghua University, 1 Qinghuayuan, Haidian District, Beijing 100084 (China); Xu, Changqing, E-mail: 2008changqing@163.com [School of Environment, Tsinghua University, 1 Qinghuayuan, Haidian District, Beijing 100084 (China); Xu, Te, E-mail: xt_lichking@qq.com [School of Environment, Tsinghua University, 1 Qinghuayuan, Haidian District, Beijing 100084 (China); Melching, Charles, E-mail: steve.melching17@gmail.com [Melching Water Solutions, 4030 W. Edgerton Avenue, Greenfield, WI 53221 (United States)

    2016-08-01

    Facing increasingly serious water pollution, the Chinese government is changing the environmental management strategy from solely pollutant concentration control to a Total Maximum Daily Load (TMDL) program, and water quality models are increasingly being applied to determine the allowable pollutant load in the TMDL. Despite the frequent use of models, few studies have focused on how parameter uncertainty in water quality models affect the allowable pollutant loads in the TMDL program, particularly for complicated and high-dimension water quality models. Uncertainty analysis for such models is limited by time-consuming simulation and high-dimensionality and nonlinearity in parameter spaces. In this study, an allowable pollutant load calculation platform was established using the Environmental Fluid Dynamics Code (EFDC), which is a widely applied hydrodynamic-water quality model. A Bayesian approach, i.e. the DiffeRential Evolution Adaptive Metropolis (DREAM) algorithm, which is a high-efficiency, multi-chain Markov Chain Monte Carlo (MCMC) method, was applied to assess the effects of parameter uncertainty on the water quality model simulations and its influence on the allowable pollutant load calculation in the TMDL program. Miyun Reservoir, which is the most important surface drinking water source for Beijing, suffers from eutrophication and was selected as a case study. The relations between pollutant loads and water quality indicators are obtained through a graphical method in the simulation platform. Ranges of allowable pollutant loads were obtained according to the results of parameter uncertainty analysis, i.e. Total Organic Carbon (TOC): 581.5–1030.6 t·yr{sup −1}; Total Phosphorus (TP): 23.3–31.0 t·yr{sup −1}; and Total Nitrogen (TN): 480–1918.0 t·yr{sup −1}. The wide ranges of allowable pollutant loads reveal the importance of parameter uncertainty analysis in a TMDL program for allowable pollutant load calculation and margin of safety (MOS

  20. Connecting micro and macro: bringing case-studies and model-based approaches together in analysing patterns of vulnerability to global environmental change

    NARCIS (Netherlands)

    Dijk, van J.W.M.

    2012-01-01

    The objective of this project is to build bridges between quantitative system dynamic simulation models that are developed at PBL (IMAGE/GISMO) and qualitative case-studies by attempting to upscale lessons learned from local case-studies through Qualitative Comparative Analysis (QCA) and by

  1. Modelling in Action. Examining How Students Approach Modelling Real Life Situations. Three Case Studies. Model of the Movement of an Elevator

    Science.gov (United States)

    Rivas, Eugenia Marmolejo

    2015-01-01

    By means of three case studies, we will present two mathematical modelling activities that are suitable for students enrolled in senior high school and the first year of mathematics at university level. The activities have been designed to enrich the learning process and promote the formation of vital modelling skills. In case studies one and two,…

  2. Integrating the Ergonomics Techniques with Multi Criteria Decision Making as a New Approach for Risk Management: An Assessment of Repetitive Tasks -Entropy Case Study.

    Science.gov (United States)

    Khandan, Mohammad; Nili, Majid; Koohpaei, Alireza; Mosaferchi, Saeedeh

    2016-01-01

    Nowadays, the health work decision makers need to analyze a huge amount of data and consider many conflicting evaluation criteria and sub-criteria. Therefore, an ergonomic evaluation in the work environment in order to the control occupational disorders is considered as the Multi Criteria Decision Making (MCDM) problem. In this study, the ergonomic risks factors, which may influence health, were evaluated in a manufacturing company in 2014. Then entropy method was applied to prioritize the different risk factors. This study was done with a descriptive-analytical approach and 13 tasks were included from total number of employees who were working in the seven halls of an ark opal manufacturing (240). Required information was gathered by the demographic questionnaire and Assessment of Repetitive Tasks (ART) method for repetitive task assessment. In addition, entropy was used to prioritize the risk factors based on the ergonomic control needs. The total exposure score based on the ART method calculated was equal to 30.07 ±12.43. Data analysis illustrated that 179 cases (74.6% of tasks) were in the high level of risk area and 13.8% were in the medium level of risk. ART- entropy results revealed that based on the weighted factors, higher value belongs to grip factor and the lowest value was related to neck and hand posture and duration. Based on the limited financial resources, it seems that MCDM in many challenging situations such as control procedures and priority approaches could be used successfully. Other MCDM methods for evaluating and prioritizing the ergonomic problems are recommended.

  3. A case study of an experienced teacher's beliefs and practice during implementation of an inquiry-based approach in her elementary science classroom

    Science.gov (United States)

    Martin, Anita Marie Benna

    The purpose of this study was to examine the relationship between one teacher's beliefs and her practices. This study examined this relationship during the implementation of reform by the teacher in the area of science as recommended by the National Science Education Standards (NRC, 1996). This study was a single case study of one experienced elementary teacher who was implementing the Science Writing Heuristic (SWH) approach in her science classroom. The study's focus was on the relationship between the teacher's beliefs and her practice during this innovation, as well as the factors that influenced that relationship. Data were collected from multiple sources such as routinely scheduled interviews, classroom observations, researcher's fieldnotes, teacher's written reflections, professional development liaison reflections, student responses, video-tape analysis, think-aloud protocol, audio-tapes of student discourse, metaphor analysis, and Reformed Teacher Observation Protocol (RTOP) scores. Data analysis was conducted using two different approaches: constant comparative method and RTOP scores. Results indicate that a central belief of this teacher was her beliefs about how students learn. This belief was entangled with other more peripheral beliefs such as beliefs about the focus of instruction and beliefs about student voice. As the teacher shifted her central belief from a traditional view of learning to one that is more closely aligned with a constructivist' view, these peripheral beliefs also shifted. This study also shows that the teacher's beliefs and her practice were consistent and entwined throughout the study. As her beliefs shifted, so did her practice and it supports Thompson's (1992) notion of a dialectic relationship between teacher beliefs and practice. Additionally, this study provides implications for teacher education and professional development. As teachers implement reform efforts related to inquiry in their science classrooms, professional

  4. Grounding evidence-based approaches to cancer prevention in the community: a case study of mammography barriers in underserved African American women.

    Science.gov (United States)

    Highfield, Linda; Bartholomew, L Kay; Hartman, Marieke A; Ford, M Molly; Balihe, Philomene

    2014-11-01

    When community health planners select an evidence-based intervention that has been developed and tested in one situation and adapt it for use in a different situation or community, best practice suggests needs assessment and formative research in the new setting. Cancer prevention planners who are interested in adopting and adapting evidence-based approaches need to base their choices on a sound understanding of the health or behavioral risk problem in which they mean to intervene. This requires a balancing act of weighing community information against a broader perspective from the scientific literature and using the combination to identify and adapt an evidence-based intervention program that is likely to be effective in the new setting. This report is a case study of a community and organizational assessment conducted as a foundation for selecting and recommending adaptation of an evidence-based intervention for improving mammography appointment attendance. We used an inductive sequential exploratory mixed-methods design to inform this process. The process provides a model for formative research grounding evidence-based practice for cancer control planners. Future studies that incorporate findings from needs assessment into the adaptation of the selected intervention program may promote the effective dissemination of evidence-based programs. © 2014 Society for Public Health Education.

  5. Challenges in managing freshwater fishery resource through Lebak Lebung Auction approach: a case study in Pangkalan Lampam District Ogan Komering Ilir Regency

    Science.gov (United States)

    Muslimin, B.; Suadi

    2018-03-01

    Responsible management of fishery resources has been a tradition of Ogan Komering Ilir (OKI) of South Sumatera for generations. It was recorded that since 1630 the Dutch Government had made auction policy for managing water territory in OKI Regency as an effort to preserve nature and to avoid the conflict of inland water ownership. Currently, the community-based management model has been adopted by local governments into formal regulations, known as Regional Regulation on Auction of Flood Water Swamp and Rivers (Lelang Lebak Lebung dan Sungai or L3S). This paper describes the success factors and the threats for the failure of the L3S management model in OKI Regency, based on a case study in Pangkalan Lampam District. The study showed that the management mechanism through the L3S system had been well instituted and become a well-established management practice. The management model is in line with the principle of co-management and the approach has become critical success factor in L3S management. However, ecological, economic and social aspects influence the sustainability of such fishery management model. Besides, L3S management model faces limited data and information related to fish stocks, which result in difficulties in determining the total allowable catch.

  6. A Novel Approach to Site Selection: Collaborative Multi-Criteria Decision Making through Geo-Social Network (Case Study: Public Parking

    Directory of Open Access Journals (Sweden)

    Zeinab Neisani Samani

    2018-03-01

    Full Text Available There are many potential factors that are involved in the decision making process of site selection, which makes it a challenging issue. This paper addresses the collaborative decision making concept through a geo-social network to predict site selection for public parking in Tehran, Iran. The presented approach utilized the analytic hierarchy process (AHP as a multi-criteria decision method (MCDM for weighting the criteria, which was completed in two stages; once by 50 experts, and then by three different levels of users, including 50 experts, 25 urban managers, and 150 pubic citizens, with respect to the case study area. The fuzzy majority method aggregates the archived results of AHP to determine the preferred locations that are suitable for public parking. The proposed method was implemented using a telegram bot platform. Two main advantages of the collaborative decision making scenario for public urban site selection are the fair distribution of the selected locations and the high satisfaction of users, which increased from 65% to 85%. This study presents an application for site selection based on multi-criteria decision making in a geo-social network context.

  7. Case study - Czechoslovakia

    International Nuclear Information System (INIS)

    Kovar, P.

    1986-01-01

    In the lecture Case Study - Czechoslovakia with the sub-title 'Unified System of Personnel Preparation for Nuclear Programme in Czechoslovakia' the actual status and the current experience of NPP personnel training and preparation in Czechoslovakia are introduced. The above mentioned training system is presented and demonstrated by the story of a proxy person who is going to become shift engineer in a nuclear power plant in Czechoslovakia. (orig./HP)

  8. Case Studies - Cervical Cancer

    Centers for Disease Control (CDC) Podcasts

    2010-10-15

    Dr. Alan Waxman, a professor of obstetrics and gynecology at the University of New Mexico and chair of the American College of Obstetricians and Gynecologists (ACOG) committee for the underserved, talks about several case studies for cervical cancer screening and management.  Created: 10/15/2010 by National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP), Division of Cancer Prevention and Control (DCPC).   Date Released: 6/9/2010.

  9. Case study: Tourism marketing

    OpenAIRE

    Kennell, James

    2014-01-01

    Tourism can be a challenging subject for students because it is both dynamic and susceptible to economic turbulence and shifts in trends. Tourism: A Modern Synthesis is an essential textbook for tourism students looking for a clear and comprehensive introduction to their studies which helps overcome these challenges. The authors apply a strong business approach to the subject reflecting developments in the teaching and content of modern courses and the text covers both key principles and cont...

  10. An approach to LCSA: the case of concrete recycling

    DEFF Research Database (Denmark)

    Hu, Mingming; Kleijn, René; Bozhilova-Kisheva, Kossara Petrova

    2013-01-01

    . This approach is illustrated with an on-going case study on concrete recycling. Methods In the context of an EC-FP7 project on technology innovation for concrete recycling, five operational steps to implement the LCSA framework are proposed: (1) broad system definition, (2) making scenarios, (3) defining...

  11. Approaches and Obstacles to the Evaluation of Investment in Continuing Vocational Training: Discussion and Case Studies from Six Member States of the European Union. CEDEFOP Panorama. Discussion Paper/Case Studies.

    Science.gov (United States)

    Grunewald, Uwe; Moraal, Dick; Sorensen, John Houman; Luttringer, Jean-Marie; Pasco, Nicolas; Kohler, Alexander; Barrett, Alan; O'Connell, Philip; Garibaldo, Francesco; Lorenzoni, Stefan; Mandl, Dieter

    This report summarizes six case studies on different aspects of the issue of evaluating investing in continuing vocational training (CVT). Part 1 (chapters 1-2) contains "Conceptual Introduction" (Jean-Marie Luttringer), which explores practical problems in considering training expenses as an investment, and "Methodological…

  12. Evaluating a Human Rights-Based Advocacy Approach to Expanding Access to Pain Medicines and Palliative Care: Global Advocacy and Case Studies from India, Kenya, and Ukraine.

    Science.gov (United States)

    Lohman, Diederik; Amon, Joseph J

    2015-12-10

    Palliative care has been defined as care that is person-centered and attentive to physical symptoms and psychological, social, and existential distress in patients with severe or life-threatening illness. The identification of access to palliative care and pain treatment as a human rights issue first emerged among palliative care advocates, physicians, and lawyers in the 1990s, with a basis in the right to health and the right to be free from cruel, inhuman, and degrading treatment. Using a case study approach, we evaluate the results of a human rights-based advocacy approach on access to pain medicine and palliative care in India, Kenya, and Ukraine. In each country, human rights advocacy helped raise awareness of the issue, identify structural barriers to care, define government obligations, and contribute to the reform of laws, policies, and practices impeding the availability of palliative care services. In addition, advocacy efforts stimulated civil society engagement and high-level political leadership that fostered the implementation of human rights-based palliative care programs. Globally, access to palliative care was increasingly recognized by human rights bodies and within global health and drug policy organizations as a government obligation central to the right to health. Copyright © 2015 Lohman, Amon. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited.

  13. Clinical Approach in Orbital Cellulitis Cases: Case Series

    Directory of Open Access Journals (Sweden)

    Altan Atakan Özcan

    2012-07-01

    Full Text Available Pur po se: To evaluate the etiological factors, diagnosis, follow-up and treatment procedures in cases of orbital cellulitis. Ma te ri al and Met hod: A retrospective review was performed on medical records of patients with orbital cellulitis treated between 2009 and 2011 in our clinic. The patients were studied for age, ophthalmologic examination features, laboratory and radiology results, treatment modalities and the response to these treatments. Re sults: Eleven patients (7 male, 4 female having an average age of 9.7 years (6 months-25 years participated in the study. All patients had eyelid oedema, hyperemia and ocular pain; with chemosis in 3, gaze restriction in 6, relative afferent pupillary defect and proptosis in 4 cases. Orbital cellulitis was observed to occur secondary to paranasal sinusitis in 10 patients (90.9% and 1 patient had only history of superior respiratory tract infection. Sinus infection was localized in ethmoid and maxillary sinuses in all except one case. Laboratory tests showed leukocytosis in 8 patients. Surgical drainage was performed in 7 of 8 patients with abscess formation observed with radiological imaging. The remainder of the patients were followed with sole medical treatment. All patients recovered without any vision loss or life-threatening complication. Dis cus si on: Orbital cellulitis cases must be followed with radiologic imaging for any complication that may occur and patients with abscess should be evaluated for surgical drainage besides antimicrobial treatment.(Turk J Ophthalmol 2012; 42: 284-7

  14. Human-Centered Design as an Approach for Place-Based Innovation in Public Health: A Case Study from Oakland, California.

    Science.gov (United States)

    Vechakul, Jessica; Shrimali, Bina Patel; Sandhu, Jaspal S

    2015-12-01

    This case study provides a high-level overview of the human-centered design (HCD) or "design thinking" process and its relevance to public health. The Best Babies Zone (BBZ) initiative is a multi-year project aimed at reducing inequities in infant mortality rates. In 2012, BBZ launched pilot programs in three US cities: Cincinnati, Ohio; New Orleans, Louisiana; and Oakland, California. The Alameda County Public Health Department (ACPHD), the lead for the Oakland BBZ site, identified HCD as a promising approach for addressing the social and economic conditions that are important drivers of health inequities. HCD is a process for creating innovative products, services, and strategies that prioritizes the needs of the intended population. ACPHD partnered with the Gobee Group (a social innovation design consultancy) to develop the Design Sprint. The Design Sprint was a 12-week pilot in which 14 professionals from nine organizations used the HCD process to develop concepts for stimulating a vibrant local economy in the Oakland Best Babies Zone. Thirty- to sixty-minute semi-structured interviews were conducted with all 14 individuals involved in the Design Sprint. With the exception of one interview, the interviews were audio-recorded, transcribed, and inductively coded to identify themes. Our experience suggests that HCD can: enhance community engagement; expedite the timeframe for challenge identification, program design, and implementation; and create innovative programs that address complex challenges.

  15. Case studies on the physical-chemical parameters' variation during three different purification approaches destined to treat wastewaters from food industry.

    Science.gov (United States)

    Ghimpusan, Marieta; Nechifor, Gheorghe; Nechifor, Aurelia-Cristina; Dima, Stefan-Ovidiu; Passeri, Piero

    2017-12-01

    The paper presents a set of three interconnected case studies on the depuration of food processing wastewaters by using aeration & ozonation and two types of hollow-fiber membrane bioreactor (MBR) approaches. A secondary and more extensive objective derived from the first one is to draw a clearer, broader frame on the variation of physical-chemical parameters during the purification of wastewaters from food industry through different operating modes with the aim of improving the management of water purification process. Chemical oxygen demand (COD), pH, mixed liquor suspended solids (MLSS), total nitrogen, specific nitrogen (NH 4 + , NO 2 - , NO 3 - ) total phosphorous, and total surfactants were the measured parameters, and their influence was discussed in order to establish the best operating mode to achieve the purification performances. The integrated air-ozone aeration process applied in the second operating mode lead to a COD decrease by up to 90%, compared to only 75% obtained in a conventional biological activated sludge process. The combined purification process of MBR and ozonation produced an additional COD decrease of 10-15%, and made the Total Surfactants values to comply to the specific legislation. Copyright © 2016 Elsevier Ltd. All rights reserved.

  16. COST AND TIME ESTIMATES DURING THE SUPPLIER SELECTION OF AN INFORMATION SYSTEM FOR LEGAL AREA: A CASE STUDY COMPARING TRADITIONAL AND AGILE PROJECT APPROACHES

    Directory of Open Access Journals (Sweden)

    Vieira, G. L. S.

    2017-06-01

    Full Text Available Considering a direct correlation between projects requirements details levels and their performance, this paper aims to evaluate whether the adoption of more extensive and detailed cost, time and scope estimation processes based on both practices, traditional and agile, and executed concurrently with the supplier selection stage, could guarantee greater accuracy in these estimates, thus increasing project success rates. Based on a case study for the information system project implementation into the legal area of a large Brazilian company, five suppliers had their proposals analyzed and compared in terms of the costs and deadlines involved, as well as the project management processes used in theirs estimates. From the obtained results, it was possible to observe that not all companies follow, at least during the prospecting phase, their service proposals described management processes, according to the theory. Another important finding was that the proposals involving, at least partially, agile approach concepts, were more likely to justify their estimates. These proposals still presented lower values, whenever compared to those less adherents to the theoretical concepts, as those based on traditional concepts.

  17. Social Network Analysis as a Methodological Approach to Explore Health Systems: A Case Study Exploring Support among Senior Managers/Executives in a Hospital Network

    Directory of Open Access Journals (Sweden)

    Aoife De Brún

    2018-03-01

    Full Text Available Health systems research recognizes the complexity of healthcare, and the interacting and interdependent nature of components of a health system. To better understand such systems, innovative methods are required to depict and analyze their structures. This paper describes social network analysis as a methodology to depict, diagnose, and evaluate health systems and networks therein. Social network analysis is a set of techniques to map, measure, and analyze social relationships between people, teams, and organizations. Through use of a case study exploring support relationships among senior managers in a newly established hospital group, this paper illustrates some of the commonly used network- and node-level metrics in social network analysis, and demonstrates the value of these maps and metrics to understand systems. Network analysis offers a valuable approach to health systems and services researchers as it offers a means to depict activity relevant to network questions of interest, to identify opinion leaders, influencers, clusters in the network, and those individuals serving as bridgers across clusters. The strengths and limitations inherent in the method are discussed, and the applications of social network analysis in health services research are explored.

  18. Social Network Analysis as a Methodological Approach to Explore Health Systems: A Case Study Exploring Support among Senior Managers/Executives in a Hospital Network.

    Science.gov (United States)

    De Brún, Aoife; McAuliffe, Eilish

    2018-03-13

    Health systems research recognizes the complexity of healthcare, and the interacting and interdependent nature of components of a health system. To better understand such systems, innovative methods are required to depict and analyze their structures. This paper describes social network analysis as a methodology to depict, diagnose, and evaluate health systems and networks therein. Social network analysis is a set of techniques to map, measure, and analyze social relationships between people, teams, and organizations. Through use of a case study exploring support relationships among senior managers in a newly established hospital group, this paper illustrates some of the commonly used network- and node-level metrics in social network analysis, and demonstrates the value of these maps and metrics to understand systems. Network analysis offers a valuable approach to health systems and services researchers as it offers a means to depict activity relevant to network questions of interest, to identify opinion leaders, influencers, clusters in the network, and those individuals serving as bridgers across clusters. The strengths and limitations inherent in the method are discussed, and the applications of social network analysis in health services research are explored.

  19. Is aristolochic acid nephropathy a widespread problem in developing countries? A case study of Aristolochia indica L. in Bangladesh using an ethnobotanical-phytochemical approach.

    Science.gov (United States)

    Michl, Johanna; Jennings, Hannah M; Kite, Geoffrey C; Ingrouille, Martin J; Simmonds, Monique S J; Heinrich, Michael

    2013-08-26

    Species of Aristolochia are associated with aristolochic acid nephropathy (AAN), a renal interstitial fibrosis and upper urinary tract cancer (UUC). Aristolochic acid nephropathy has been reported in ten countries but its true incidence is unknown and most likely underestimated. By combining an ethnobotanical and phytochemical approach we provide evidence for the risk of AAN occurring in Bangladesh. More specifically, we assess the intra-specific variation of aristolochic acid analogues in medicinally used Aristolochia indica samples from Bangladesh. Ethnobotanical information was collected from 16 kavirajes (traditional healers) in different study locations in Bangladesh. Plant samples were obtained from native habitats, botanical gardens, herbal markets and pharmaceutical companies. The samples were extracted using 70% methanol and were analysed using LC-DAD-MS and (1)H-NMR. Roots as well as leaves are commonly used for symptoms such as snake bites and sexual problems. Among the informants knowledge about toxicity or side effects is very limited and Aristolochia indica is often administered in very high doses. Replacement of Aristolochia indica with other medicinal plants such as Rauvolfia serpentina (L.) Benth. ex Kurz was common. Aristolochia indica samples contained a variety of aristolochic acid analogues such as aristolochic acid I, aristolochic acid II, cepharadione A and related compounds. AAN cases are likely to occur in Bangladesh and more awareness needs to be raised about the health risks associated with the use of Aristolochia indica and other species of Aristolochia as herbal medicines. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  20. Health risk assessment as an approach to manage an old landfill and to propose integrated solid waste treatment: A case study in Italy.

    Science.gov (United States)

    Paladino, O; Massabò, M

    2017-10-01

    The aim of the present paper is to show how an approach based on human health risk analysis can be used as a decisional tool for the evaluation of impacts on population and for deciding between different waste treatment processes. The situation in which the increasing production of solid wastes cannot be confined in the old existing Municipal Solid Waste landfill (settled in Genoa, Liguria Region, Italy) is used as a case study. Risk assessment for human health due to air, surface water, groundwater and soil contamination is performed in different scenarios for the old landfill and compared with alternative Waste-to-Energy management solutions that consider thermal treatment by gasification of the total waste or gasification of the dry fraction coupled with anaerobic digestion of the wet fraction, plus biogas combustion with or without sludge and bottom ash/slag disposal in the old landfill. Hazard Index (HI) and Cancer Risk (CR) in case of operating landfill and under the suspected situation of failure of the sealing system, were respectively 1.15 and 1.1∗10 -7 . Unacceptable HI were found due to groundwater contamination, while HI due to river pollution was slightly under the threshold. Vegetables ingestion was the most important pathway and ammonia the most responsible of toxic adverse effects. Fish ingestion and dermal contact with contaminated water were found to be the most important exposure pathways for carcinogenic risk, due mainly to BTEX. HI and CR in the supposed scenario of total waste gasification were respectively 9.4∗10 -1 and 1.1∗10 -5 while they were respectively 3.2∗10 -1 and 6∗10 -6 in case of gasification of the dry fraction. CR in both scenarios was over the threshold mainly due to dioxins, where milk and meat ingestion were found to be the highest risk pathways. Inhalation resulted as the highest not-carcinogenic risk exposure pathway, mainly due to N