WorldWideScience

Sample records for case study analysis

  1. Using Correspondence Analysis in Multiple Case Studies

    NARCIS (Netherlands)

    Kienstra, Natascha; van der Heijden, Peter G.M.

    2015-01-01

    In qualitative research of multiple case studies, Miles and Huberman proposed to summarize the separate cases in a so-called meta-matrix that consists of cases by variables. Yin discusses cross-case synthesis to study this matrix. We propose correspondence analysis (CA) as a useful tool to study

  2. On robust analysis of paycheck: case study

    Directory of Open Access Journals (Sweden)

    Michal Uherek

    2011-01-01

    Full Text Available Many statistical tests are constructed to check the validity of normal distribution. Here we propose a case study on analysis of paycheck where we employ the RT class of tests for normality firstly introduced in Střelec, Stehlík (2008. In particular such a study can be of interest for pension funds theoreticians and practitioners, which study the transitions of pension systems from one social security state to the another one. Our study illustrates some possible distributional deviations of salary residuals on a real data.

  3. The Analysis of a Murder, a Case Study

    Science.gov (United States)

    Dinan, Frank J.; Szczepankiewicz, Steven H.; Carnaham, Melinda; Colvin, Michael T.

    2007-01-01

    The analysis of a Murder case study can be used in general chemistry or nonscience major chemistry courses to teach data handling and analysis in a non-laboratory context. This case study will help students to respond more enthusiastically and with more interest to a set of material placed before them related to a real case rather than…

  4. ESP Teaching and Needs Analysis. Case Study

    Directory of Open Access Journals (Sweden)

    Nădrag Lavinia

    2017-01-01

    Full Text Available This paper explores the characteristics of the English language for Specific Purposes (ESP, the difficulties and challenges faced when teaching English as a foreign language, and the importance of Needs Analysis in learning a foreign language. For this purpose, we applied a questionnaire to a group of intermediate level (B1 students, majoring in Tourism. The needs analysis revealed the approaches and activities that should be applied in different types of lessons, thus giving the students the opportunity to improve their English skills and find out what they lack and need when studying English for their future professional careers. The results outlined the need for concrete activities and strategies, with the focus on communicative skills, based on learner-centered approaches and activities, real-life situations by using authentic materials that are efficient for the students’ better integration into the Tourism labor market.

  5. Rock stability analysis – A case study

    Directory of Open Access Journals (Sweden)

    Lahmili A.

    2018-01-01

    Full Text Available The problems of the stability of the mineral-bearing structure ST2 at 560 m of depth in the east zone of Bou-azzer mine disturbs the advance of the exploitation. The geological and structural study based on field observations and the analysis of core drilling shows the presence of altered and fractured diorite surmounted by cobalt mineralization. Based on the empirical methods of Barton (Q-system and Bieniawski (RMR the bed rock is classified as poor quality. The analytical study made it possible to dimension supporting by bow-pieces and bolting. The existence of several types of discontinuities (fault, diaclases and joints has made the realization of numerical simulation by the finite elements method very difficult. These discontinuities create a network of natural fractures which cut out the blocks in various forms likely to be detached or slip into the excavation, thus encouraging the infiltration of water creating pressure on the massif. The classical studies show their limits in practice for installation of supporting because they must take into account the characteristics of discontinuities. Hence a structural analysis of the massif is essential. The cracking survey of ST2 at 560 m of depth in the east zone of Bou-azzer mine at 560m of depth, and their processing by the DIPS software, showed the existence of three main families of discontinuity NW-SE with a dip of 75SW, NS subverticale and NE-SW with a dip of 57NW, and two families of minor joints NW-SE and NE-SW with successive dips of 40SW and 75SE. The analysis of fracturing surveys allowed us to evaluate the risks of falling blocks and the families of discontinuity responsible for them, and to limit the zones presenting a risk of slip and the families responsible for them. The importance of this study is of knowing how and where to put supporting to be opposed to the risk of fall and tilting of the blocks, caused by the network of discontinuities of the massif.

  6. Analysis of Multidimensional Poverty: Theory and Case Studies ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Analysis of Multidimensional Poverty: Theory and Case Studies. Couverture du livre Analysis of Multidimensional Poverty: Theory and Case Studies. Auteur(s):. Louis-Marie Asselin. Maison(s) d'édition: Springer, CRDI. 18 août 2009. ISBN : 9781441909053. 228 pages. e-ISBN : 9781552504604. Téléchargez le PDF.

  7. A Framework for Analysis of Case Studies of Reading Lessons

    Science.gov (United States)

    Carlisle, Joanne F.; Kelcey, Ben; Rosaen, Cheryl; Phelps, Geoffrey; Vereb, Anita

    2013-01-01

    This paper focuses on the development and study of a framework to provide direction and guidance for practicing teachers in using a web-based case studies program for professional development in early reading; the program is called Case Studies Reading Lessons (CSRL). The framework directs and guides teachers' analysis of reading instruction by…

  8. Microcredit–nutrition education link: A case study analysis of ...

    African Journals Online (AJOL)

    The qualitative analysis was based on case studies of 12 women considered by their peers to be 'successful' ENAM participants, and six case studies of women considered to be 'less successful' ENAM participants. The qualitative methodology complimented knowledge gained through quantitative investigations as ...

  9. Qualitative case study data analysis: an example from practice.

    Science.gov (United States)

    Houghton, Catherine; Murphy, Kathy; Shaw, David; Casey, Dympna

    2015-05-01

    To illustrate an approach to data analysis in qualitative case study methodology. There is often little detail in case study research about how data were analysed. However, it is important that comprehensive analysis procedures are used because there are often large sets of data from multiple sources of evidence. Furthermore, the ability to describe in detail how the analysis was conducted ensures rigour in reporting qualitative research. The research example used is a multiple case study that explored the role of the clinical skills laboratory in preparing students for the real world of practice. Data analysis was conducted using a framework guided by the four stages of analysis outlined by Morse ( 1994 ): comprehending, synthesising, theorising and recontextualising. The specific strategies for analysis in these stages centred on the work of Miles and Huberman ( 1994 ), which has been successfully used in case study research. The data were managed using NVivo software. Literature examining qualitative data analysis was reviewed and strategies illustrated by the case study example provided. Discussion Each stage of the analysis framework is described with illustration from the research example for the purpose of highlighting the benefits of a systematic approach to handling large data sets from multiple sources. By providing an example of how each stage of the analysis was conducted, it is hoped that researchers will be able to consider the benefits of such an approach to their own case study analysis. This paper illustrates specific strategies that can be employed when conducting data analysis in case study research and other qualitative research designs.

  10. Knowledge Management Analysis: A Case Study

    Science.gov (United States)

    Mecha, Ezi I.; Desai, Mayur S.; Richards, Thomas C.

    2009-01-01

    It is imperative for businesses to manage knowledge and stay competitive in the marketplace. Knowledge management is critical and is a key to prevent organizations from duplicating their efforts with a subsequent improvement in their efficiency. This study focuses on overview of knowledge management, analyzes the current knowledge management in…

  11. The implementation of customer profitability analysis: a case study

    NARCIS (Netherlands)

    van Raaij, E.M.; Vernooij, M.J.A.; Vernooij, Maarten J.A.; van Triest, S.P.

    2003-01-01

    By using customer profitability analysis (CPA), firms can determine the profit contribution of customer segments and/or individual customers. This article presents an approach for the implementation of CPA. The implementation process is illustrated using a case study of a firm producing and selling

  12. Analysis of case studies - mining, milling and discharges

    International Nuclear Information System (INIS)

    McEwan, A.C.

    2000-01-01

    This analysis paper reviews case studies on mining and milling and on radioactive discharges. An outline is given of each of the case studies presented from the perspectives of the study background, the criteria followed in remediation, the decision making process, outcomes achieved, and an evaluation in relation to radiological criteria that are recommended internationally. Site remediation after mining and milling operations may be driven more by aesthetic and environmental concerns than radiological criteria, particularly in more populated areas. The cases illustrated that it is highly desirable that stakeholders, including the public, are involved in decision making at an early stage with agreement on remediation outcomes. In particular, the exposure pathways and dose assessment models employed should generally be agreed with or approved by the regulatory authority prior to remediation work. In the case of remediated properties at Grand Junction, Colorado, it appears the cleanup criteria employed were below or consistent with those applicable to practices, although the situation was one of intervention, and this raises a question as to the cost effectiveness of the cleanup. For some remediation projects there are long term ownership issues arising out of the need for extended public or state oversight of engineered structures or active water treatment facilities, but for these cases ownership issues did not arise for purely radiological reasons. (author)

  13. Survival analysis for customer satisfaction: A case study

    Science.gov (United States)

    Hadiyat, M. A.; Wahyudi, R. D.; Sari, Y.

    2017-11-01

    Most customer satisfaction surveys are conducted periodically to track their dynamics. One of the goals of this survey was to evaluate the service design by recognizing the trend of satisfaction score. Many researchers recommended in redesigning the service when the satisfaction scores were decreasing, so that the service life cycle could be predicted qualitatively. However, these scores were usually set in Likert scale and had quantitative properties. Thus, they should also be analyzed in quantitative model so that the predicted service life cycle would be done by applying the survival analysis. This paper discussed a starting point for customer satisfaction survival analysis with a case study in healthcare service.

  14. Case studies of extreme wave analysis: A comparative study

    Energy Technology Data Exchange (ETDEWEB)

    Vledder, G. van; Goda, Y.; Hawkes, P.; Mansard, E.; Martin, M.J.; Mathiesen, M.; Peltier, E.; Thompson, E.

    1993-07-01

    Several methods of extreme wave analysis have been applied to two sets of deep water extreme wave data. One set consisted of three-hourly sea-state records collected during a nine year period with a wave buoy at Haltenbanken off the Norwegian cost. The other set comprised a 20-year period of storm peak wave heights, obtained via a numerical hindcast of historical storms. For both data sets, 100-year return wave heights with corresponding 90% confidence intervals were computed with a variety of extremal analysis techniques, including the Initial Distribution Method, the Annual Maxima Method, and the Peak over Threshold Method. FT-I, Weibull and other probability distributions were fitted to the data by the Method of Moments, Least Squares Method, and the Maximum Likelihood Method. The results of the study show that for both data sets the estimated 100-year return wave heights differ less than 10% of one another. It was also found that the effect of choices in the data selection, e.g. the choice of the threshold, has a significant effect on the estimated wave heights. 13 refs., 4 figs., 5 tabs.

  15. Diachronic Analysis of Parking Usage: The Case Study of Brescia

    Directory of Open Access Journals (Sweden)

    Riccardo Bonotti

    2014-05-01

    Full Text Available The paper proposes a methodology for the investigation of the space-time relations between public services and individual mobility, by checking the space-time efficiency of the allocation of public and private parking areas. The methodology has been applied to the case study of Brescia, in northern Italy. The spatial distribution of car parking has been assessed as well as the usage variations during the day. First of all, the location and the density of parking areas within the city has been taken into account, and represented to show the spatial coverage of car parking supply. Then, the temporal issue has been considered, since the degree of use of each parking area varies within the time of the day. Therefore, the degree of use of each parking area has been mapped at three significant instant of the day (10.00 a.m.; 01.00 p.m. and 04.00 p.m.. This kind of analysis is particularly helpful to highlight the availability of parking areas during the day. The results of the analysis, even if referred to a case study, can be extended to similar situations as the methodology of the analysis has a broaden sound meaning. The aim of the paper is to illustrate a method to develop mobility policies and plans.

  16. Multiple imputation analysis of case-cohort studies.

    Science.gov (United States)

    Marti, Helena; Chavance, Michel

    2011-06-15

    The usual methods for analyzing case-cohort studies rely on sometimes not fully efficient weighted estimators. Multiple imputation might be a good alternative because it uses all the data available and approximates the maximum partial likelihood estimator. This method is based on the generation of several plausible complete data sets, taking into account uncertainty about missing values. When the imputation model is correctly defined, the multiple imputation estimator is asymptotically unbiased and its variance is correctly estimated. We show that a correct imputation model must be estimated from the fully observed data (cases and controls), using the case status among the explanatory variable. To validate the approach, we analyzed case-cohort studies first with completely simulated data and then with case-cohort data sampled from two real cohorts. The analyses of simulated data showed that, when the imputation model was correct, the multiple imputation estimator was unbiased and efficient. The observed gain in precision ranged from 8 to 37 per cent for phase-1 variables and from 5 to 19 per cent for the phase-2 variable. When the imputation model was misspecified, the multiple imputation estimator was still more efficient than the weighted estimators but it was also slightly biased. The analyses of case-cohort data sampled from complete cohorts showed that even when no strong predictor of the phase-2 variable was available, the multiple imputation was unbiased, as precised as the weighted estimator for the phase-2 variable and slightly more precise than the weighted estimators for the phase-1 variables. However, the multiple imputation estimator was found to be biased when, because of interaction terms, some coefficients of the imputation model had to be estimated from small samples. Multiple imputation is an efficient technique for analyzing case-cohort data. Practically, we suggest building the analysis model using only the case-cohort data and weighted

  17. Leadership Analysis in K-12 Case Study: "Divided Loyalties"

    Science.gov (United States)

    Alsubaie, Merfat Ayesh

    2016-01-01

    This report mainly aims to provide a critical and in-depth analysis of the K-12 Case, "Divided Loyalty" by Holy and Tartar (2004). The case recounts how the manifestation of inadequate leadership skills in a school setting could affect negatively the performance of students.

  18. Participatory Environmental Valuation: A Comparative Analysis of Four Case Studies

    Directory of Open Access Journals (Sweden)

    Leslie Carnoye

    2015-07-01

    Full Text Available The valuation of multiple ecosystem services requires the design of valuation processes able to integrate different dimensions of value and to cope with complexity. Following the “value-articulating institution” framework, we note that three core problems arise: the cognitive, normative and composition problems. Combining valuation methods, such as contingent valuation and multicriteria analysis, with participatory and deliberative techniques is increasingly promoted as a means to address those fundamental problems. However, the quality and legitimacy of the valuation process then becomes dependent on how participation is framed. We note that numerous issues need to be taken into account, such as the roles assumed by participants, the differences in contribution among participants, the level of participatory impact and the level of democratization of the decision-making process. This paper proposes a detailed qualitative analysis of four case studies, each of them having implemented a specific valuation method in a participatory process. We analyze how those cases were handled in each of the dimensions considered and offer our conclusions about the added values and remaining challenges related to participatory environmental valuation.

  19. An ethical analysis of a home visit case study.

    Science.gov (United States)

    Pibernat, Artur Dalfó; Vidal, Jessica Rosell; Pibernat, Enric Dalfó; Rodríguez, Francisco Javier Pelegrina; Colomer, Gerard; Cid, Maria Feijoo

    2017-12-01

    This article will explore a clinical case study of a home visit carried out by the case manager nurse. In this case, we will discuss the dilemma of finding the balance between autonomy and beneficence from the perspective of principlist ethics, virtue ethics and the 'ethics of care'. The main conflict in this case study deals with all proposals are unsuitable and it is not necessary for a nurse to pay him a home visit, whereas for the healthcare system it is considered necessary. We could conclude that, during the home visit, the case manager aspires to achieve excellence, and throughout his clinical relationship with Francesc, searches for a series of virtues, respecting certain fundamental principles. In this way, the case managers ensure that Jaume's care is more humanised. The case has been anonymised and confidentiality maintained.

  20. Singularity analysis in nonlinear biomathematical models: Two case studies

    International Nuclear Information System (INIS)

    Meletlidou, E.; Leach, P.G.L.

    2007-01-01

    We investigate the possession of the Painleve Property for certain values of the parameters in two biological models. The first is a metapopulation model for two species (prey and predator) and the second one is a study of a sexually transmitted disease, into which 'education' is introduced. We determine the cases for which the systems possess the Painleve Property, in particular some of the cases for which the equations can be directly integrated. We draw conclusions for these cases

  1. Economic Analysis Case Studies of Battery Energy Storage with SAM

    Energy Technology Data Exchange (ETDEWEB)

    DiOrio, Nicholas [National Renewable Energy Lab. (NREL), Golden, CO (United States); Dobos, Aron [National Renewable Energy Lab. (NREL), Golden, CO (United States); Janzou, Steven [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2015-11-01

    Interest in energy storage has continued to increase as states like California have introduced mandates and subsidies to spur adoption. This energy storage includes customer sited behind-the-meter storage coupled with photovoltaics (PV). This paper presents case study results from California and Tennessee, which were performed to assess the economic benefit of customer-installed systems. Different dispatch strategies, including manual scheduling and automated peak-shaving were explored to determine ideal ways to use the storage system to increase the system value and mitigate demand charges. Incentives, complex electric tariffs, and site specific load and PV data were used to perform detailed analysis. The analysis was performed using the free, publically available System Advisor Model (SAM) tool. We find that installation of photovoltaics with a lithium-ion battery system priced at $300/kWh in Los Angeles under a high demand charge utility rate structure and dispatched using perfect day-ahead forecasting yields a positive net-present value, while all other scenarios cost the customer more than the savings accrued. Different dispatch strategies, including manual scheduling and automated peak-shaving were explored to determine ideal ways to use the storage system to increase the system value and mitigate demand charges. Incentives, complex electric tariffs, and site specific load and PV data were used to perform detailed analysis. The analysis was performed using the free, publically available System Advisor Model (SAM) tool. We find that installation of photovoltaics with a lithium-ion battery system priced at $300/kWh in Los Angeles under a high demand charge utility rate structure and dispatched using perfect day-ahead forecasting yields a positive net-present value, while all other scenarios cost the customer more than the savings accrued.

  2. A Case Study of a Mixed Methods Study Engaged in Integrated Data Analysis

    Science.gov (United States)

    Schiazza, Daniela Marie

    2013-01-01

    The nascent field of mixed methods research has yet to develop a cohesive framework of guidelines and procedures for mixed methods data analysis (Greene, 2008). To support the field's development of analytical frameworks, this case study reflects on the development and implementation of a mixed methods study engaged in integrated data analysis.…

  3. Corporate investment decisions and economic analysis. Exercises and case studies

    International Nuclear Information System (INIS)

    Babusiaux, D.; Pierru, A.

    2005-01-01

    Economic analysis of industrial projects is based on methods which are often simple, sometimes complex, yet always to be applied with rigor. The aim of this book is to help readers assimilate the concepts and methods for investment decision and project evaluation. It offers a wide range of exercises, problems and case studies taken from business, which are the fruit of many years of teaching, consulting and research. Some are direct application of basics, others require a higher degree of reflection for more complex applications. Our approach borrows elements from micro economics, engineering economics and finance theory. While many examples relate to the energy sector, particularly oil and gas, the problems addressed are of broader scope and so are fully applicable to other industry sectors. This book is ideally suited to both professionals and students who seek to master capital budgeting techniques. A review of essential points is proposed at the beginning of each chapter and key methodological elements are recalled in the solutions. (authors)

  4. DIAGNOSIS OF FINANCIAL POSITION BY BALANCE SHEET ANALYSIS - CASE STUDY

    OpenAIRE

    Hada Teodor; Marginean Radu

    2013-01-01

    This study aims to elucidate and to exemplify an important technique for assessing the economic entities, namely the fundamental analysis of the balance sheet, in several significant aspects. The analysis of financial data reported in the balance sheet are, for an economic entity, the basis of a principle diagnosis by determining specific indicators of economic and financial analysis. This analysis aims to provide an insight into the companyâ€(tm)s financial position. The stated aim of this s...

  5. An exploratory case study analysis of contemporary marketing practices

    OpenAIRE

    Palmer, Roger; Wilson, Hugh

    2009-01-01

    The Contemporary Marketing Practice (CMP) research tradition has formulated and investigated a set of different marketing practices or archetypes ranging from transactional to relationship and network approaches. We identify gaps in previous research, and report on a case study in the house-building industry, which begins to fill these gaps. Specifically, we propose some amendments to the definition and detail of the marketing practices, arguing for example that e- marketing...

  6. Digital Forensic Analysis Of Malware Infected Machine- Case Study

    Directory of Open Access Journals (Sweden)

    Amulya Podile

    2015-08-01

    Full Text Available Abstract Internet banking has created a convenient way for us to handle our business without leaving our home. Man-in-the-Browser is a special case of Man-in-the-middle attack targeted against customers of Internet banking. One of the capabilities of Man-in-the-Browser Trojan is modification of html referred to as html injection that allows the attacker to alter the html of a page before it is sent to the browser for interpretation. In this paper the authors discussed about forensic analysis of RAM Volatile data system logs and registry collected from bank customer computer infected with Trojan and confirmed the source of attack time-stamps and the behavior of the malware by using open source and commercial tools.

  7. Effectiveness of Using Online Discussion Forum for Case Study Analysis

    Directory of Open Access Journals (Sweden)

    Ravi Seethamraju

    2014-01-01

    Full Text Available Business schools are exploring new pedagogical approaches to learning in order to deal with challenges such as increased class sizes, limited funding support, and difficulties in facilitating and encouraging active participation and learning among a diverse cohort of students. This paper reports on a study of the effectiveness of a pedagogical approach that blends online discussion board and case study. Analysing quantity and quality of online postings and comparing accounting students’ performance with previous cohort, this study observes a significant improvement in student learning. Appropriate design and delivery strategies and clear assessment criteria for assessment and use have provided an effective learning vehicle for students, helped them overcome their own language related barriers, and encouraged them to participate in a nonthreatening environment. This approach further complemented the benefits of peer-to-peer learning and case study pedagogy. Reported increase in workload for students and marking load for academics and measuring the value of learning, however, are some of the challenges that need further attention by researchers.

  8. Numerical analysis of electro-osmosis consolidation : A case study

    NARCIS (Netherlands)

    Yuan, J.; Hicks, M.A.

    2015-01-01

    A numerical model for the design and analysis of electro-osmosis consolidation in soft clay is used to study a well-documented full-scale field test. The large-strain model, which considers coupled electro-osmosis flow, hydraulic flow and electric density flow in a deformable elasto-plastic porous

  9. Beacon communities' public health initiatives: a case study analysis.

    Science.gov (United States)

    Massoudi, Barbara L; Marcial, Laura H; Haque, Saira; Bailey, Robert; Chester, Kelley; Cunningham, Shellery; Riley, Amanda; Soper, Paula

    2014-01-01

    The Beacon Communities for Public Health (BCPH) project was launched in 2011 to gain a better understanding of the range of activities currently being conducted in population- and public health by the Beacon Communities. The project highlighted the successes and challenges of these efforts with the aim of sharing this information broadly among the public health community. The Beacon Community Program, designed to showcase technology-enabled, community-based initiatives to improve outcomes, focused on: building and strengthening health information technology (IT) infrastructure and exchange capabilities; translating investments in health IT to measureable improvements in cost, quality, and population health; and, developing innovative approaches to performance measurement, technology, and care delivery. Four multimethod case studies were conducted based on a modified sociotechnical framework to learn more about public health initiative implementation and use in the Beacon Communities. Our methodological approach included using document review and semistructured key informant interviews. NACCHO Model Practice Program criteria were used to select the public health initiatives included in the case studies. Despite differences among the case studies, common barriers and facilitators were found to be present in all areas of the sociotechnical framework application including structure, people, technology, tasks, overarching considerations, and sustainability. Overall, there were many more facilitators (range = 7-14) present for each Beacon compared to barriers (range = 4-6). Four influential promising practices were identified through the work: forging strong and sustainable partnerships; ensuring a good task-technology fit and a flexible and iterative design; fostering technology acceptance; and, providing education and demonstrating value. A common weakness was the lack of a framework or model for the Beacon Communities evaluation work. Sharing a framework or approach

  10. SAM International Case Studies: DPV Analysis in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    McCall, James D [National Renewable Energy Laboratory (NREL), Golden, CO (United States)

    2018-03-28

    Presentation demonstrates the use of the System Advisor Model (SAM) in international analyses, specifically Mexico. Two analyses are discussed with relation to SAM modelling efforts: 1) Customer impacts from changes to net metering and billing agreements and 2) Potential benefits of PV for Mexican solar customers, the Mexican Treasury, and the environment. Along with the SAM analyses, integration of the International Utility Rate Database (I-URDB) with SAM and future international SAM work are discussed. Presentation was created for the International Solar Energy Society's (ISES) webinar titled 'International use of the NREL System Advisor Model (SAM) with case studies'.

  11. Disaster waste management in Italy: Analysis of recent case studies.

    Science.gov (United States)

    Gabrielli, Francesco; Amato, Alessia; Balducci, Susanna; Magi Galluzzi, Lorenzo; Beolchini, Francesca

    2018-01-01

    The geomorphology of the Italian territory causes the incidence of many disasters like earthquakes and floods, with the consequent production of large volumes of waste. The management of such huge flows, produced in a very short time, may have a high impact on the whole emergency response. Moreover, historical data related to disaster waste management are often not easily accessible; on the other hand, the availability of data concerning previous events could support the emergency managers, that have to take a decision in a very short time. In this context, the present paper analyses four relevant recent case studies in Italy, dealing with disaster waste management after geologic and hydrologic natural events. Significant differences have been observed in the quantity and types of generated wastes, and, also, in the management approach. Such differences are mainly associated with the kind of disaster (i.e. earthquake vs. flood), to the geographical location (i.e. internal vs. coastal area), to the urbanisation level (i.e. industrial vs. urban). The study allowed the identification of both strengths and weaknesses of the applied waste management strategies, that represent "lessons to learn" for future scenarios. Even though it deals with Italian case studies, this manuscript may have a high impact also at international level, making available for the first-time emergency waste management data, that are considered an indispensable support for decision makers. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. IVHS Institutional Issues and Case Studies, Analysis and Lessons Learned, Final Report

    Science.gov (United States)

    1994-04-01

    This 'Analysis and Lessons Learned' report contains observations, conclusions, and recommendations based on the performance of six case studies of Intelligent Vehicle-Highway Systems (IVHS) projects. Information to support the development of the case...

  13. Case study applications of venture analysis: fluidized bed. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Mosle, R.

    1978-05-01

    In order to appraise the case for government intervention in the case of atmospheric fluid-bed combustion, Energy Resources Company and Rotan Mosle have developed a methodology containing four key elements. The first is an economic and environmental characterization of the new technology; the second, a survey of its prospective users and vendors; the third, a cost-benefit analysis of its prospective social benefits; and the fourth, an analytical model of its market penetration and the effects thereon of a basket of government incentives. Three major technical obstacles exist to continued AFBC development: feeding coal and limestone reliably to the boiler, tube erosion and corrosion, and developing boiler turndown capability. The review of the economic, environmental and technical attributes of the new technology has suggested that the preliminary venture can be selected with confidence as a commercial prospect capable of detailed evaluation from both private and public perspectives. The venture choice can therefore be considered firm: it will be the equipment required for the combustion of coal in atmospheric fluid beds as applied to industrial process steam in boilers of at least 83 Kpph capacity. The most effective demonstration of the potential of AFBC in the eyes of prospective industrial users is that provided by a project conducted by the private sector with minimal government direction. Unlike the ''experimental'' style of existing mixed public-private demonstration projects, the pressure to achieve reliability in more commercial applications would serve rapidly to reveal more clearly the potential of AFBC. The marketplace can be allowed to decide its fate thereafter. Once AFBC has been successfully demonstrated, the relative merits of AFBC and coal-FGD are best left to prospective users to evaluate.

  14. Counterfeit analysis strategy illustrated by a case study.

    Science.gov (United States)

    Dégardin, Klara; Roggo, Yves

    2016-01-01

    Medicine counterfeiting is a current problem that the whole pharmaceutical field has to deal with. In 2014, counterfeits entered the legitimate supply chain in Europe. Quick and efficient action had to be taken. The aim of this paper is to explain which analytical strategy was chosen to deal with six of the cases concerned and which criteria have to be considered to provide quick and thorough information about the counterfeits. The evaluation of the packaging was performed in a first step, based on a comparison with genuine samples and evaluation of manipulation signs. Chemical methods were then used, consisting of near infrared and infrared spectroscopy, capillary zone electrophoresis and ultraviolet-visible spectrophotometry, in order to authenticate the samples and provide the chemical composition of the confirmed counterfeits. Among the 20 samples analyzed, 17 were confirmed as counterfeits. The counterfeits were the results of the manipulation of genuine samples, and one contained totally counterfeited parts. Several manipulation signs were asserted, like the addition of glue on the boxes and the vials. Genuine stolen goods had been diluted with water, while for an isolated case, a different active ingredient had been introduced in a vial. The analytical data generated were further investigated from a forensic intelligence perspective. Links could be revealed between the analyzed counterfeits, together with some interesting information about the modus operandi of the counterfeiters. The study was performed on a limited number of cases, and therefore encourages chemical and packaging profiling of counterfeits at a bigger scale. Copyright © 2015 John Wiley & Sons, Ltd. Copyright © 2015 John Wiley & Sons, Ltd.

  15. CONTENT ANALYSIS OF HOTEL WEBSITES: CASE STUDY OF CROATIA

    OpenAIRE

    Suzana Markovic; Sanja Raspor; Tomislav Car; Jelena Komsic

    2012-01-01

    In the competitive hotel industry the content of hotel websites has an important role in achieving and maintaining business success and profitability. The purpose of this study is to analyze the websites of a selected group of hotels (three, four and five star) by applying content analysis by six dimensions (contact information, information about facilities, reservations and the surrounding area, as well as communication with customers and web-site functionality) and 22 characteristics. The a...

  16. COST BENEFIT ANALYSIS OF A DG INTEGRATED SYSTEM: CASE STUDY

    Directory of Open Access Journals (Sweden)

    Ch. V. S. S. SAILAJA

    2017-09-01

    Full Text Available Distributed Generation is capable of meeting the load of the consumers partially or completely. Depending on the type of DG involved it can be operated in interconnected mode and islanded mode. The availability of numerous alternatives present for the DG technologies and large initial investments necessitates a detailed cost benefit analysis for the implementation of DG technologies. In this work an attempt has been made to study the costs involved in implementing the DG technologies. A practical system having two kinds of distributed generation i.e., Diesel Generator and solar photovoltaic system for its back up purpose is considered. A detailed cost analysis of the two DG technologies is carried out.

  17. A study on educational development cooperation: Case analysis in Guatemala

    Directory of Open Access Journals (Sweden)

    Sanghee Jung

    2016-02-01

    Full Text Available This paper outlines the status of demand for educational ODA (Official Development Assistance in Guatemala. It includes reviews of ODA references of major donor countries & international organizations, and interviews of experts carried out during field study. The paper analyzes cooperative educational development projects of major donor countries & international organizations. Germany and the Us are analyzed on a bilateral level while UNICEF is analyzed on a multilateral level. Based on the results of this analysis, it draws specific implications of South Korea’s ODA policies for providing educational ODA in Guatemala.

  18. New technological localisms: a comparative analysis of two case studies

    Directory of Open Access Journals (Sweden)

    Darren J. Reed

    2014-01-01

    Full Text Available The following paper is concerned with elucidating an account of forms of new localism as they relate to the concept of ‘habitele’, a conceptual framework that helps us understand new forms of relatedness in the digitally mediated world. In doing this it will also reflect back on the concept and draw out as yet unconsidered elements based upon issues of fluidity, mobility, and what we will call ‘distal-locals’. The paper is centred around two case studies: the first is of a smart phone app, vouchercloud and details the way that the offering of money-off vouchers rests on particular notions of the local; while the second is of a environment organization who uses information technology to promote their activities. It is premised upon a history of work in the sociology of science and technology studies (STS and in particular a set of conceptual and methodologicalresources that helps to reveal the complexities of notions such as “the local”.

  19. Cortical bone fracture analysis using XFEM - case study.

    Science.gov (United States)

    Idkaidek, Ashraf; Jasiuk, Iwona

    2017-04-01

    We aim to achieve an accurate simulation of human cortical bone fracture using the extended finite element method within a commercial finite element software abaqus. A two-dimensional unit cell model of cortical bone is built based on a microscopy image of the mid-diaphysis of tibia of a 70-year-old human male donor. Each phase of this model, an interstitial bone, a cement line, and an osteon, are considered linear elastic and isotropic with material properties obtained by nanoindentation, taken from literature. The effect of using fracture analysis methods (cohesive segment approach versus linear elastic fracture mechanics approach), finite element type, and boundary conditions (traction, displacement, and mixed) on cortical bone crack initiation and propagation are studied. In this study cohesive segment damage evolution for a traction separation law based on energy and displacement is used. In addition, effects of the increment size and mesh density on analysis results are investigated. We find that both cohesive segment and linear elastic fracture mechanics approaches within the extended finite element method can effectively simulate cortical bone fracture. Mesh density and simulation increment size can influence analysis results when employing either approach, and using finer mesh and/or smaller increment size does not always provide more accurate results. Both approaches provide close but not identical results, and crack propagation speed is found to be slower when using the cohesive segment approach. Also, using reduced integration elements along with the cohesive segment approach decreases crack propagation speed compared with using full integration elements. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

  20. Carbon Footprint Analysis for a GRAPE Production Case Study

    Science.gov (United States)

    Sirca, C.; Marras, S.; Masia, S.; Duce, P.; Zara, P.; Spano, D.

    2013-12-01

    Agriculture activities can play a double role in emitting or sequestering carbon from the atmosphere. Mitigation of greenhouse gas (GHG) emissions in agriculture is one of the most urgent research subjects in the framework of enhancing environmental stewardship. However, little is known about the role of the agriculture in the global carbon balance, since most of the studies applied the Eddy Covariance technique in natural or semi-natural ecosystems to investigate their role in mitigate the anthropogenic carbon release. The application of the Eddy Covariance technique in agricultural systems could greatly improve our knowledge about their role on the global carbon budget and help in modeling the related processes. In addition, there is a growing request from producers, trade companies, and customers on the assessment of the environmental impact of a production process related to agricultural high quality products. In recent years, particular attention was put on the estimation of GHG emissions deriving from productive processes. In this context, a useful tool is the Life Cycle Assessment (LCA), which represents a methodology to estimate GHG emissions related to the entire life cycle of a product. The Carbon Footprint (CF) analysis represents a subset of the LCA, which only considers CO2 emissions with an impact on climate change. With respect to the wine industry, most of studies focused on the CF analysis related to the wine making process in the cellar, while a few studies analyzed the GHG emissions related to the grape production. The aim of this work was to quantify the CO2 emissions due to the grape production and emphasize the double role of a vineyard as a carbon sink or source. An Eddy Covariance station was set up in a representative vineyard located in the Mediterranean Basin (Sardinia, Italy) to measure the net carbon exchange between the surface and the atmosphere. The CF analysis was also conducted to compute the carbon balance of the grape production

  1. Mycobacterial species as case-study of comparative genome analysis

    DEFF Research Database (Denmark)

    Zakham, F.; Belayachi, L.; Ussery, David

    2011-01-01

    . Pasteur 1173P2, M. leprae Br4923, M. marinum M, M. sp. KMS, M. sp. MCS, M. tuberculosis CDC1551, M. tuberculosis F11, M. tuberculosis H37Ra, M. tuberculosis H37Rv, M. tuberculosis KZN 1435 , M. ulcerans Agy99,and M. vanbaalenii PYR—1, For this purpose a comparison has been done based on their length...... defined for twelve Mycobacterial species. We have also introduced the genome atlas of the reference strain M. tuberculosis H37Rv which can give a good overview of this genome. And for examining the phylogenetic relationships among these bacteria, a phylogenic tree has been constructed from 16S rRNA gene...... the evolutionary events of these species and improving drugs, vaccines, and diagnostics tools for controlling Mycobacterial diseases. In this present study we aim to outline a comparative genome analysis of fourteen Mycobacterial genomes: M. avium subsp. paratuberculosis K—10, M. bovis AF2122/97, M. bovis BCG str...

  2. Survival analysis of heart failure patients: A case study.

    Directory of Open Access Journals (Sweden)

    Tanvir Ahmad

    Full Text Available This study was focused on survival analysis of heart failure patients who were admitted to Institute of Cardiology and Allied hospital Faisalabad-Pakistan during April-December (2015. All the patients were aged 40 years or above, having left ventricular systolic dysfunction, belonging to NYHA class III and IV. Cox regression was used to model mortality considering age, ejection fraction, serum creatinine, serum sodium, anemia, platelets, creatinine phosphokinase, blood pressure, gender, diabetes and smoking status as potentially contributing for mortality. Kaplan Meier plot was used to study the general pattern of survival which showed high intensity of mortality in the initial days and then a gradual increase up to the end of study. Martingale residuals were used to assess functional form of variables. Results were validated computing calibration slope and discrimination ability of model via bootstrapping. For graphical prediction of survival probability, a nomogram was constructed. Age, renal dysfunction, blood pressure, ejection fraction and anemia were found as significant risk factors for mortality among heart failure patients.

  3. Fire risk evaluation using multicriteria analysis--a case study.

    Science.gov (United States)

    Vadrevu, Krishna Prasad; Eaturu, Anuradha; Badarinath, K V S

    2010-07-01

    Forest fires are one of the major causes of ecological disturbance and environmental concerns in tropical deciduous forests of south India. In this study, we use fuzzy set theory integrated with decision-making algorithm in a Geographic Information Systems (GIS) framework to map forest fire risk. Fuzzy set theory implements classes or groupings of data with boundaries that are not sharply defined (i.e., fuzzy) and consists of a rule base, membership functions, and an inference procedure. We used satellite remote sensing datasets in conjunction with topographic, vegetation, climate, and socioeconomic datasets to infer the causative factors of fires. Spatial-level data on these biophysical and socioeconomic parameters have been aggregated at the district level and have been organized in a GIS framework. A participatory multicriteria decision-making approach involving Analytical Hierarchy Process has been designed to arrive at a decision matrix that identified the important causative factors of fires. These expert judgments were then integrated using spatial fuzzy decision-making algorithm to map the forest fire risk. Results from this study were quite useful in identifying potential "hotspots" of fire risk, where forest fire protection measures can be taken in advance. Further, this study also demonstrates the potential of multicriteria analysis integrated with GIS as an effective tool in assessing "where and when" forest fires will most likely occur.

  4. Multifractal Analysis of Typhoons: the case study of Bolaven (2012)

    Science.gov (United States)

    Lee, Jisun; Paz, Igor; Ichiba, Abdellah; Tchiguirinskaia, Ioulia; Schertzer, Daniel; Lee, Dong-In; Kuo, Hung-Chi

    2017-04-01

    Multifractals have become rather standard tools to analyze and simulate meteorological and hydrological data, especially radar data that have the rare advantage of providing space-time (3D+1) fields. However, in spite of their inherent capacity to deal with extreme multiscale phenomena like typhoons, as well as an increased availability of higher quality data, there had been not so many multifractal studies of typhoons since pioneering studies (Chygyrynsakaia et al 1994, Lazarev et al 1994), which relied on time series data obtained from 1D aircraft or balloon trajectories. This lack of new developments might have impeded significant progress in predicting typhoon evolution prediction. We therefore decided to jointly understand the dynamics and rainfall by multifractal space-time analysis with the help of the joint measurements of the Typhoon Bolaven by three Doppler S-band radars. This experimental set-up not only provided accurate estimates of the rainfall intensity, but also of the 3 components of the wind velocity. Typhoon Bolaven is one of the typhoons that caused the largest damages with severe rainfall all over Korea including Jeju Island with more than 250 mm in 2 days in 2012. It was regarded as the most powerful storm to strike the Korean Peninsula in nearly a decade, with wind gusts measured up to 186 km h-1. The three radars were respectively located in Gosan, and Seongsan, in Jeju Island, and Jindo, in southwest of Korea peninsula, i.e. all around the region where the typhoon intensity was the largest. The largest distance between the radars was approximately 100km, and the rainfall and wind velocity were estimated on a grid of 360×360×60 every ten minutes. The multifractal analysis of this large amount of data (space time Trace Method and Double Trace Method) was performed to better understand through scales the fast transformation of potential energy into kinetic energy and the premier role of convection. In particular, this analysis confirms power

  5. District logistics analysis of the Viborg county case study

    DEFF Research Database (Denmark)

    Hansen, Leif Gjesing; Lise Drewes, Nielsen

    The paper presents results of  the logistical flows and logistical organisation used in a district logistics analysis in Viborg county, Denmark.......The paper presents results of  the logistical flows and logistical organisation used in a district logistics analysis in Viborg county, Denmark....

  6. Analysis of Multidimensional Poverty: Theory and Case Studies ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    18 août 2009 ... This book presents a new method for measuring multidimensional poverty. The author critically analyzes various statistical approaches, and proposes a new way of applying a factorial technique, Multiple Correspondence Analysis, to poverty analysis. The core of this new approach rests on the identification ...

  7. Computerized tomographic studies in cerebral palsy. Analysis of 200 cases

    Energy Technology Data Exchange (ETDEWEB)

    Sugie, Y. (Tokyo Women' s Medical Coll. (Japan))

    1981-09-01

    Computed tomographic (CT) findings in 200 children with cerebral palsy (CP) were analysed from the viewpoint of clinical manifestations, disease complications and etiological factors. CT scans of 135 cases (67.5%) were found to be abnormal and there were 14 (7%) borderline cases. The major abnormality found on CT scans was cerebral atrophy. Other important changes included focal or diffuse low density area in the brain tissue, congenital malformation, and cerebellar atrophy. From the clinical point of view, a large number of patients with spastic tetraplegia and spastic diplegia showed highly abnormal CT scans. On the other hand, in patients with spastic monoplegia, spastic paraplegia, and athetotic type, CT findings were normal or revealed only minor cerebral atrophy. Most children showing asymmetric clinical symptoms had corresponding asymmetric CT abnormalities which included ventricular enlargement, low density area in the brain tissue, and hemispherical volume. There was a significant correlation between the severity of physical impairment and the extent of CT abnormalities. Severely affected children had grossly abnormal CT scans such as hydranencephaly, polycystic change, and extensive cerebral atrophy. In the patients complicated with epilepsy, the incidence and severity of abnormal CT were higher than those of non-epileptic patients. Mentally retarded patients had variable enlargement of the subarachnoidal space depending on the severity of their mental retardation. Patients with suspected postnatal etiology also had high incidence of severe CT abnormality. CT scan is a valuable tool for evaluating patients with CP and in some cases, possible etiology of the disease may be discovered.

  8. Understanding lean & safety projects: analysis of case studies

    Directory of Open Access Journals (Sweden)

    Maria Crema

    2017-12-01

    Full Text Available Facing the current socio-economic contingency while guaranteeing a high level of care quality is particularly challenging in the field of healthcare. Through an integrated adoption of emerging managerial solutions, projects that allow organizations to achieve both efficiency and patient safety improvements could be implemented, thereby transposing policy directives towards a safer and more sustainable healthcare system. Therefore, the purpose of this paper is to investigate the features of Lean & Safety (L&S projects. Three Health Lean Management (HLM projects that had unexpected patient safety results were selected from the same region. Differences and similarities among the cases have been highlighted and interesting points of evidence have been noted. Despite the fact that the projects were pursuing similar objectives and benefiting from comparable support, the obtained changes had direct impact on patient safety enhancement in the cases that involved the front-office processes, and an indirect impact on patient safely for the L&S project that focused on back-office activities. The implementation processes and the Information and Communication Technologies (ICT adoption of the cases are also different.

  9. Statistical Analysis of 30 Years Rainfall Data: A Case Study

    Science.gov (United States)

    Arvind, G.; Ashok Kumar, P.; Girish Karthi, S.; Suribabu, C. R.

    2017-07-01

    Rainfall is a prime input for various engineering design such as hydraulic structures, bridges and culverts, canals, storm water sewer and road drainage system. The detailed statistical analysis of each region is essential to estimate the relevant input value for design and analysis of engineering structures and also for crop planning. A rain gauge station located closely in Trichy district is selected for statistical analysis where agriculture is the prime occupation. The daily rainfall data for a period of 30 years is used to understand normal rainfall, deficit rainfall, Excess rainfall and Seasonal rainfall of the selected circle headquarters. Further various plotting position formulae available is used to evaluate return period of monthly, seasonally and annual rainfall. This analysis will provide useful information for water resources planner, farmers and urban engineers to assess the availability of water and create the storage accordingly. The mean, standard deviation and coefficient of variation of monthly and annual rainfall was calculated to check the rainfall variability. From the calculated results, the rainfall pattern is found to be erratic. The best fit probability distribution was identified based on the minimum deviation between actual and estimated values. The scientific results and the analysis paved the way to determine the proper onset and withdrawal of monsoon results which were used for land preparation and sowing.

  10. Case study using analysis of variance to determine groups’ variations

    Directory of Open Access Journals (Sweden)

    Ardelean Flavius A.

    2017-01-01

    Full Text Available This paper aims to present the analysis of a part manufactured in three shifts, which has a specific characteristic dimension, using DFSS (Design for Six Sigma ANOVA (Analysis of Variance method. In every shift, the significant characteristic, “SC”, dimension should be produced within the given tolerance. The question that arises is: “Does the shift have any influence on the “SC” dimension realization?” By using the one way ANOVA method, one can observe the variation between the means of each of the three shifts. Afterwards, specific action can be undertaken to adjust, if necessary, the differences between the shifts.

  11. Wave analysis at frictional interface: A case wise study

    Science.gov (United States)

    Srivastava, Akanksha; Chattopadhyay, Amares; Singh, Pooja; Singh, Abhishek Kumar

    2018-03-01

    The present article deals with the propagation of a Stoneley wave and with the reflection as well as refraction of an incident P -wave at the frictional bonded interface between an initially stressed isotropic viscoelastic semi-infinite superstratum and an initially stressed isotropic substratum as case I and case II, respectively. The complex form of the velocity equation has been derived in closed form for the propagation of a Stoneley wave in the said structure. The real and imaginary parts of the complex form of the velocity equation correspond to the phase velocity and damped velocity of the Stoneley wave. Phase and damped velocity have been analysed against the angular frequency. The expressions of the amplitude ratios of the reflected and refracted waves are deduced analytically. The variation of the amplitude ratios is examined against the angle of incidence of the P -wave. The influence of frictional boundary parameters, initial stress, viscoelastic parameters on the phase and damped velocities of the Stoneley wave and the amplitude ratios of the reflected as well as refracted P - and SV -wave have been revealed graphically through numerical results.

  12. Wavelet analysis for ground penetrating radar applications: a case study

    Science.gov (United States)

    Javadi, Mehdi; Ghasemzadeh, Hasan

    2017-10-01

    Noises may significantly disturb ground penetrating radar (GPR) signals, therefore, filtering undesired information using wavelet analysis would be challenging, despite the fact that several methods have been presented. Noises are gathered by probe, particularly from deep locations, and they may conceal reflections, suffering from small altitudes, because of signal attenuation. Multiple engineering fields need data analysis to distinguish valued material, based on information obtained by underground observations. Using wavelets as one of the useful methods for analyzing data is considered in this paper. However, optimal wavelet analysis would be challenging in the realm of exploring GPR signals. There is no doubt that accounting for wavelet function, decomposition level, threshold estimation method and threshold transformation, in the matter of de-noising and investigating signals, is of great importance; they must be chosen with judgment as they influence the results enormously if they are not carefully designated. Multiple wavelet functions are applied to perform de-noising and reconstruction on synthetic noisy signals generated by the finite-difference time-domain (FDTD) method to account for the most appropriate function for the purpose. In addition, various possible decomposition levels, threshold estimation methods and threshold transformations in the de-noising procedure are tested. The optimal wavelet analysis is also evaluated by examining real data acquired from several antenna frequencies which are common in engineering practice.

  13. Design and analysis of control systems case studies

    CERN Document Server

    Stein Shiromoto, Humberto

    2017-01-01

    This book provides methods to unify different approaches to tackle stability theory problems. In particular, it presents a methodology to blend approaches obtained from measure theory with methods obtained from Lyapunov’s stability theory. The author summarizes recent works on how different analysis/design methods can be unified and employed for systems that do not belong to either of domains of validity.

  14. BRAND ANALYSIS OF LG ELECTRONICS: A CASE STUDY

    OpenAIRE

    Syed Fida Hussain Shah; Tahira Nazir; Khalid Zaman

    2013-01-01

    LG Electronics is a Korean based global brand in the field of consumer electronics, home appliances and mobile communications. The critical analysis in identifying the steps taken by the LG Electronics in the light of the existing literature review helps us to correlate these steps with the enhanced brand image, brand value and brand positioning. Information is collected from various reports i.e., LG Annual reports; International Magazines from the world of Business and Tech-nology; research ...

  15. Multi-Core Processor Memory Contention Benchmark Analysis Case Study

    Science.gov (United States)

    Simon, Tyler; McGalliard, James

    2009-01-01

    Multi-core processors dominate current mainframe, server, and high performance computing (HPC) systems. This paper provides synthetic kernel and natural benchmark results from an HPC system at the NASA Goddard Space Flight Center that illustrate the performance impacts of multi-core (dual- and quad-core) vs. single core processor systems. Analysis of processor design, application source code, and synthetic and natural test results all indicate that multi-core processors can suffer from significant memory subsystem contention compared to similar single-core processors.

  16. Indonesian Sea Accident Analysis (Case Study From 2003 – 2013)

    Science.gov (United States)

    Arya Dewanto, Y.; Faturachman, D.

    2018-03-01

    There are so many accidents in sea transportation in Indonesia. Most of the accidents happen because of low concern aspects of the safety and security of the crew. In sailing, a man as transport users to interact with the ship and the surrounding environment (including other ships, cruise lines, ports, and the situation of local conditions). These interactions are sometimes very complex and related to various aspects of. Aware of the multiplicity of aspects related to the third of these factors, seeking the safety of cruise through a reduction in the number of accidents and the risk of death and serious injuries due to accidents and goods transported is certainly not enough attempted through mono-sector approach, but rather takes a multi-sector approach to the efforts. In this paper, we described the Indonesian Sea Transportation accident analysis for eleven years divided into four items: total of ship accident type, ship accident factor, total of casualties, region of ship accidents. All data founded from Marine Court (Mahkamah Pelayaran). From that 4 items we can find Indonesia Sea Accident Analysis from 2003-2013.

  17. An Investigation of Strategic Decision Making in Service Marketing through Case Study Development and Analysis

    Science.gov (United States)

    Rosetti, Joseph L.; Maceiko, Meghan

    2009-01-01

    Through the collaborative efforts of an undergraduate student and a professor of marketing, this paper focuses on a case study and corresponding teaching notes developed as a final component of an independent study in service marketing. The case utilizes the hospitality industry as the template for analysis of the appropriateness of marketing…

  18. Early failure analysis of machining centers: a case study

    International Nuclear Information System (INIS)

    Wang Yiqiang; Jia Yazhou; Jiang Weiwei

    2001-01-01

    To eliminate the early failures and improve the reliability, nine ex-factory machining centers are traced under field conditions in workshops. Their early failure information throughout the ex-factory run-in test is collected. The field early failure database is constructed based on the collection of field early failure data and the codification of data. Early failure mode and effects analysis is performed to indicate the weak subsystem of a machining center or the troublemaker. The distribution of the time between early failures is analyzed and the optimal ex-factory run-in test time for machining center that may expose sufficiently the early failures and cost minimum is discussed. Suggestions how to arrange ex-factory run-in test and how to take actions to reduce early failures for machining center is proposed

  19. Critical incident analysis through narrative reflective practice: A case study

    Directory of Open Access Journals (Sweden)

    Thomas S. C. Farrell

    2013-01-01

    Full Text Available Teachers can reflect on their practices by articulating and exploring incidents they consider critical to themselves or others. By talking about these critical incidents, teachers can make better sense of seemingly random experiences that occur in their teaching because they hold the real inside knowledge, especially personal intuitive knowledge, expertise and experience that is based on their accumulated years as language educators teaching in schools and classrooms. This paper is about one such critical incident analysis that an ESL teacher in Canada revealed to her critical friend and how both used McCabe’s (2002 narrative framework for analyzing an important critical incident that occurred in the teacher’s class.

  20. BRAND ANALYSIS OF LG ELECTRONICS: A CASE STUDY

    Directory of Open Access Journals (Sweden)

    Syed Fida Hussain Shah

    2013-04-01

    Full Text Available LG Electronics is a Korean based global brand in the field of consumer electronics, home appliances and mobile communications. The critical analysis in identifying the steps taken by the LG Electronics in the light of the existing literature review helps us to correlate these steps with the enhanced brand image, brand value and brand positioning. Information is collected from various reports i.e., LG Annual reports; International Magazines from the world of Business and Tech-nology; research literatures and other reputable sources. Innovation & design and constant obsolescence of ICT and IT Products (i.e., mobiles in particular, LG have to stick on R&D, design strategies and innovation and creativity for competing in the global market.

  1. Maintenance Audit through Value Analysis Technique: A Case Study

    Science.gov (United States)

    Carnero, M. C.; Delgado, S.

    2008-11-01

    The increase in competitiveness, technological changes and the increase in the requirements of quality and service have forced a change in the design and application of maintenance, as well as the way in which it is considered within the managerial strategy. There are numerous maintenance activities that must be developed in a service company. As a result the maintenance functions as a whole have to be outsourced. Nevertheless, delegating this subject to specialized personnel does not exempt the company from responsibilities, but rather leads to the need for control of each maintenance activity. In order to achieve this control and to evaluate the efficiency and effectiveness of the company it is essential to carry out an audit that diagnoses the problems that could develop. In this paper a maintenance audit applied to a service company is developed. The methodology applied is based on the expert systems. The expert system by means of rules uses the weighting technique SMART and value analysis to obtain the weighting between the decision functions and between the alternatives. The expert system applies numerous rules and relations between different variables associated with the specific maintenance functions, to obtain the maintenance state by sections and the general maintenance state of the enterprise. The contributions of this paper are related to the development of a maintenance audit in a service enterprise, in which maintenance is not generally considered a strategic subject and to the integration of decision-making tools such as the weighting technique SMART with value analysis techniques, typical in the design of new products, in the area of the rule-based expert systems.

  2. Indirect Detection Analysis: Wino Dark Matter Case Study

    Energy Technology Data Exchange (ETDEWEB)

    Hryczuk, Andrzej [Munich, Tech. U.; Cholis, Ilias [Fermilab; Iengo, Roberto [SISSA, Trieste; Tavakoli, Maryam [IPM, Tehran; Ullio, Piero [INFN, Trieste

    2014-07-15

    We perform a multichannel analysis of the indirect signals for the Wino Dark Matter, including one-loop electroweak and Sommerfeld enhancement corrections. We derive limits from cosmic ray antiprotons and positrons, from continuum galactic and extragalactic diffuse γ-ray spectra, from the absence of γ-ray line features at the galactic center above 500 GeV in energy, from γ-rays toward nearby dwarf spheroidal galaxies and galaxy clusters, and from CMB power-spectra. Additionally, we show the future prospects for neutrino observations toward the inner Galaxy and from antideuteron searches. For each of these indirect detection probes we include and discuss the relevance of the most important astrophysical uncertainties that can impact the strength of the derived limits. We find that the Wino as a dark matter candidate is excluded in the mass range bellow simeq 800 GeV from antiprotons and between 1.8 and 3.5 TeV from the absence of a γ-ray line feature toward the galactic center. Limits from other indirect detection probes confirm the main bulk of the excluded mass ranges.

  3. Zero Energy Ready Home Multifamily Case Study Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Dentz, Jordan [Advanced Residential Integrated Energy Solutions Collaborative, New York, NY (United States); Alaigh, Kunal [Advanced Residential Integrated Energy Solutions Collaborative, New York, NY (United States)

    2016-02-05

    Two multifamily buildings planned in Climate Zone 4 were analyzed to determine the cost, energy and performance implications of redesigning them to comply with Zero Energy Ready Home, a recognition program of the U.S. Department of Energy. Energy modeling was conducted on one representative apartment in each building using BEopt. Construction costs were obtained from the developer and subcontractors to determine savings and cost increases over ENERGY STAR. It was found that seven items would be necessary to change to comply with ZERH criteria when starting from the original design which was compliant with ENERGY STAR version 3.0. Design changes were made to the exterior walls, domestic water heating system, duct protection, duct design, garage ventilation, and pest control to comply with ZERH requirements. Energy impacts of upgrading from the original design to ZERH resulted in 2 to 8% reduction in modeled source energy consumption, or 1.7 to 10.4 MMBtu per year, although the original design was already about 8% better than a design configured to minimum ENERGY STAR criteria. According to the BEopt analysis, annualized energy related costs of the ZERH design were slightly higher for the apartment and slightly lower for the townhome when compared to the original design.

  4. Econometric Analysis of Marketing Costs: A Case Study

    NARCIS (Netherlands)

    Kuwornu, J.K.M.; Abboah, R.; Amegashie, D.P.K.; Kuiper, W.E.

    2009-01-01

    This study analyzes the marketing costs of a pineapple producing and export firm (Bomart Farms) in Ghana. Con­ sistent with the existing literature, we categorize marketing costs into assembling, processing, and distribution costs. The assembling cost comprises of cost of crating and loading fresh

  5. Ergonomic analysis in cold storage rooms: a study of case.

    Science.gov (United States)

    Silva, Hebert Roberto; Araújo, Cleudmar Amaral

    2012-01-01

    The human work possess a history and, in this dimension, the man is submitted to the conditions that confer it physical and psychological consequences. The activity of work in the present time imposes adverse labor conditions. The ergonomics is a science that it aims at to study the real activity of the work with sights its transformation. This study it was carried through in a sector of processing of meats in a Agroindustry, with the objective to analyze ergonomically the conditions of work and the possible risks it greets it of the workers. It was verified that in the accomplishment of the activities it had an overload of the musculature of superior members, where if it verified the requirement of repetitive movements during four working hours. Also observed the organization of the work, the position of the employees and way to carry through the activities. With the study we conclude that the ergonomic risks in the sector are related to the position during the accomplishment of the activities, requirement of repetitive movements, e the cold that affects the muscular control, reducing some motor abilities as the dexterity and the force.

  6. Integration of management control tools. Analysis of a case study

    Directory of Open Access Journals (Sweden)

    Raúl Comas Rodríguez

    2015-09-01

    Full Text Available The objective of this article is to design and to implement a procedure that integrates management control tools focusing on process, to improve the efficiency and the efficacy. It was carried out an experimental study where is defined a procedure, based in the Balanced Scorecard, which integrates the process management into the strategic planning and their evaluation. As results of this work, we define the key factors of success associated with the four perspectives of the Balanced Scorecard that are linked through the cause-effect relations obtaining the strategic map that allows visualizing and communicating the enterprise strategy. The indicators evaluate the key factor of success, integrating the process with the assistance of a software. The implementation of the procedure in a commercialization enterprise contributed to integrate the process definition into the strategic planning. The alignment was evaluated and the efficiency and efficacy indicators improved the company´s performance.

  7. Bayesian analysis on meta-analysis of case-control studies accounting for within-study correlation.

    Science.gov (United States)

    Chen, Yong; Chu, Haitao; Luo, Sheng; Nie, Lei; Chen, Sining

    2015-12-01

    In retrospective studies, odds ratio is often used as the measure of association. Under independent beta prior assumption, the exact posterior distribution of odds ratio given a single 2 × 2 table has been derived in the literature. However, independence between risks within the same study may be an oversimplified assumption because cases and controls in the same study are likely to share some common factors and thus to be correlated. Furthermore, in a meta-analysis of case-control studies, investigators usually have multiple 2 × 2 tables. In this article, we first extend the published results on a single 2 × 2 table to allow within study prior correlation while retaining the advantage of closed-form posterior formula, and then extend the results to multiple 2 × 2 tables and regression setting. The hyperparameters, including within study correlation, are estimated via an empirical Bayes approach. The overall odds ratio and the exact posterior distribution of the study-specific odds ratio are inferred based on the estimated hyperparameters. We conduct simulation studies to verify our exact posterior distribution formulas and investigate the finite sample properties of the inference for the overall odds ratio. The results are illustrated through a twin study for genetic heritability and a meta-analysis for the association between the N-acetyltransferase 2 (NAT2) acetylation status and colorectal cancer. © The Author(s) 2011.

  8. Dr. Dahl publishes article on improving intelligence analysis through the use of case studies

    OpenAIRE

    2017-01-01

    NSA’s Dr. Erik Dahl has recently published an article in Intelligence and National Security entitled “Getting beyond Analysis by Anecdote: Improving Intelligence Analysis through the Use of Case Studies.” Dahl argues that although American intelligence officials have been trying since the 9/11 attacks to improve the quality of their analysis, they have so far failed to make much use of one of the most common methods used in the social science: case study analysis. Through better u...

  9. Circulating folate levels and colorectal adenoma: a case-control study and a meta-analysis.

    Science.gov (United States)

    Park, Yeong Mi; Youn, Jiyoung; Cho, Chang Ho; Kim, Sung Hi; Lee, Jung Eun

    2017-10-01

    The relationship between folate and colorectal neoplasia remains controversial. We examined the association between serum folate concentrations and colorectal adenomas in a case-control study of Korean adults and conducted a meta-analysis. Our case-control study included 113 pairs of case and control who underwent colonoscopy and provided blood samples. We used multivariable conditional logistic regression models to obtain the odds ratios and 95% confidence interval (CIs). For meta-analysis, we identified the relevant studies by searching the PubMed database up to February 2017, included our case-control study and combined the study-specific relative risks (RRs) using a random-effects model. In this case-control study, we included 58 men and 55 women with colorectal adenomas and sex and fasting status matched the controls. We did not find any significant association between the serum folate levels and colorectal adenomas in either men or women. For meta-analysis, a total of eleven studies were included in our analysis and classified into two groups; polyp clearance group (PC) for the studies that included participants who underwent endoscopies and had their polyps removed at baseline; and no polyp clearance group (NPC) for the studies that included participants whose histories of endoscopies were unknown or who underwent their first endoscopies. Four PC (1,311 cases and 1,672 non-cases) and eight NPC studies (3,501 cases and 11,347 non-cases) were included. The combined RRs (95% CIs) comparing the bottom with the top categories of circulating folate levels were 1.07 (0.97-1.18) for the NPC group but 1.45 (1.16-1.74) for the PC group. Low circulating folate levels were associated with new adenoma formation.

  10. Case-study application of venture analysis: the integrated energy utility. Volume 3. Appendices

    Energy Technology Data Exchange (ETDEWEB)

    Fein, E; Gordon, T J; King, R; Kropp, F G; Shuchman, H L; Stover, J; Hausz, W; Meyer, C

    1978-11-01

    The appendices for a case-study application of venture analysis for an integrated energy utility for commercialization are presented. The following are included and discussed: utility interviews; net social benefits - quantitative calculations; the financial analysis model; market penetration decision model; international district heating systems; political and regulatory environment; institutional impacts.

  11. Sequential Analysis Applied to Counseling Process and Outcome: A Case Study Revisited.

    Science.gov (United States)

    Wampold, Bruce E.; Kim, Kay-Hyon

    1989-01-01

    Analyzed case study presented by Hill, Carter, and O'Farrell (1983) with sequential analysis methods developed to demonstrate the usefulness of these methods for understanding counseling process and outcome. Sequential analysis method revealed several facets of interaction between counselor and client that were undetected by Hill et al.'s…

  12. Factor analysis as a tool in groundwater quality management: two southern African case studies

    Science.gov (United States)

    Love, David; Hallbauer, Dieter; Amos, Amos; Hranova, Roumiana

    Although developed as a tool in the social sciences, R-mode factor analysis, a multivariate statistical tool, has proven highly effective in studies of groundwater quality. The technique examines the relationships between variables (such as chemical parameters in groundwater), which are shown by a number of cases (such as sampling points). In this study, two examples are presented. The first is of groundwater around a southern African iron ore mine and the second is of groundwater in the vicinity of a southern African municipal sewage disposal works. Groundwater samples were collected, their chemistry analysed and factor analysis was performed on each of the chemical datasets. In the first case study, factor analysis successfully separated signatures due to uncontaminated groundwater (calcium, magnesium and bicarbonate), agricultural activities (potassium and ammonium) and mining activities (sodium, chloride and sulphate). In the second case study, factor analysis did identify a chemical signature (nitrate and phosphate; minor iron) related to the sewage works-but since this signature involved parameters that were within regulated limits, the finding was of limited value for management purposes. Thus although R-mode factor analysis can be a valuable tool studies of groundwater quality, this is not always the case. Multivariate statistical techniques like factor analysis should thus be used as supplementary to, but not in replacement of, conventional groundwater quality data treatment methods.

  13. Singing and Vocal Instruction in Primary Schools: An Analysis from Six Case Studies in Spain

    Science.gov (United States)

    Cuadrado, Albina; Rusinek, Gabriel

    2016-01-01

    This is an analysis of how specialist music teachers sing and teach how to sing, based on data collected from six case studies carried out in Spanish primary schools. The study aimed at understanding classroom singing practices, and in particular the provision or absence of vocal instruction in relation with teachers' singing models. The findings…

  14. Analysis of Topoi: A Case Study in Managing the Identity of the Persuadee.

    Science.gov (United States)

    Clark, Ruth Anne; Delia, Jesse G.

    Arguing that systematic analysis of message strategies ought to become a major focus of study within the field of speech communication, this paper offers a limited case study to illustrate the kinds of strategies that might be uncovered. The paper places the illustration within a persuasive context and indicates the kinds of approaches a speaker…

  15. A Predictive and Follow-Up Study of Abusive and Neglectful Families by Case Analysis.

    Science.gov (United States)

    Heap, Kari Killen

    1991-01-01

    A case analysis, predictive study, and follow-up study of 17 abused and/or neglected children found that the prognosis for abusive and/or neglectful parents is poorer when they are scored high on immaturity than when they are scored high on emotional problems. (BRM)

  16. 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.

  17. Reading in English and in Chinese: Case Study of Retrospective Miscue Analysis with Two Adult ELLS

    Science.gov (United States)

    Wang, Yang; Gilles, Carol J.

    2017-01-01

    Retrospective Miscue Analysis (RMA) has proved to be a useful instructional tool in language arts classrooms and for English learners from various cultures. However, it has not been used with native Mandarin-speaking English learners. This qualitative case study explored the reading process of two adult Mandarin-speaking ELs through RMA. They read…

  18. Analysis And Study On 47 Cases Of Adverse Reactions Of Chinese ...

    African Journals Online (AJOL)

    Analysis And Study On 47 Cases Of Adverse Reactions Of Chinese Medicine Injection. ... African Journal of Traditional, Complementary and Alternative Medicines ... Abstract. Background: Along with efficacy, Chinese medicine is increasingly being known to people, Chinese medicine and its preparations are increasingly ...

  19. Economic and environmental analysis of energy efficiency measures in agriculture, Case Studies and trade offs

    NARCIS (Netherlands)

    Visser, de C.L.M.; Voort, van der M.P.J.; Stanghellini, C.; Ellen, H.H.; Klop, A.; Wemmenhove, H.

    2013-01-01

    This report illustrates case studies with an in-depth analysis of the interactions of energy efficiency measures with farm economics and the environmental impact (GHG) of the measures across Europe. The analyses followed a common methodology considering the farm gate as the system boundary.

  20. Selection, collection and analysis as sources of evidence in case study research.

    Science.gov (United States)

    Houghton, Catherine; Casey, Dympna; Smyth, Siobhan

    2017-03-22

    Background Case study research is a valuable way to explore and describe nursing phenomena in their natural contexts. Multiple sources of evidence are critical in this approach. It is imperative that the strategies for selection, collection and analysis of cases are considered and articulated in the early stages of planning, to avoid having large datasets which cannot be harmonised. Aim To critically examine what is meant by 'multiple sources of evidence' and how they can be used in case study research. Two examples of case study research are used to illustrate the decisions the authors made during the selection, collection and analysis stages of the research. Discussion These decisions included what sources would be used, rationales for their use, and how the data would be collected and analysed. In addition, multiple sources of evidence can result in large amounts of data so the use of NVivo to manage the data is described. Conclusion Each source of evidence selected must have a clear purpose and relate to the study's objectives. Clarification of this during the early planning of any research is imperative. Implications for practice The authors hope that the examples provided to illustrate how multiple sources of evidence are used will guide researchers conducting case study research.

  1. Case studies of scenario analysis for adaptive management of natural resource and infrastructure systems

    DEFF Research Database (Denmark)

    Hamilton, M.C.; Thekdi, S.A.; Jenicek, E.M.

    2013-01-01

    Management of natural resources and infrastructure systems for sustainability is complicated by uncertainties in the human and natural environment. Moreover, decisions are further complicated by contradictory views, values, and concerns that are rarely made explicit. Scenario analysis can play...... a major role in addressing the challenges of sustainability management, especially the core question of how to scan the future in a structured, integrated, participatory, and policy-relevant manner. In a context of systems engineering, scenario analysis can provide an integrated and timely understanding...... of emergent conditions and help to avoid regret and belated action. The purpose of this paper is to present several case studies in natural resources and infrastructure systems management where scenario analysis has been used to aide decision making under uncertainty. The case studies include several resource...

  2. 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.

  3. Traumatic injury pattern analysis in a light rail transit death: a retrospective case study.

    Science.gov (United States)

    Kendell, Ashley E; Fleischman, Julie M; Fulginiti, Laura C

    2015-05-01

    Within the context of medical examiner's offices, forensic anthropologists are increasingly being asked to assist with the interpretation of traumatic skeletal injury. This case study presents an example of trauma analysis performed by forensic anthropologists at the Maricopa County Forensic Science Center in Phoenix, Arizona. The primary goal of this study is to document an uncommon pattern of traumatic injury-severe grinding abrasions of the lower appendage that macroscopically resemble sharp force trauma, especially as observed in dismemberment cases-resulting from an individual being dragged beneath a Light Rail train for c. 1.7 miles. The abraded skeletal elements include a femoral shaft fragment, a femoral head portion, and the right foot. Second, this study aims to illustrate the efficacy of forensic anthropological analysis of patterned skeletal trauma. Finally, this study demonstrates the critical importance of analyzing scene information before drawing conclusions as to the etiology of a traumatic injury pattern. © 2015 American Academy of Forensic Sciences.

  4. Transcriptomic network analysis of micronuclei-related genes: a case study

    DEFF Research Database (Denmark)

    van Leeuwen, D. M.; Pedersen, Marie; Knudsen, Lisbeth E.

    2011-01-01

    Mechanistically relevant information on responses of humans to xenobiotic exposure in relation to chemically induced biological effects, such as micronuclei (MN) formation can be obtained through large-scale transcriptomics studies. Network analysis may enhance the analysis and visualisation...... of such data. Therefore, this study aimed to develop a 'MN formation' network based on a priori knowledge, by using the pathway tool MetaCore. The gene network contained 27 genes and three gene complexes that are related to processes involved in MN formation, e.g. spindle assembly checkpoint, cell cycle...... checkpoint and aneuploidy. The MN-related gene network was tested against a transcriptomics case study associated with MN measurements. In this case study, transcriptomic data from children and adults differentially exposed to ambient air pollution in the Czech Republic were analysed and visualised...

  5. Literacy learning in secondary school science classrooms: A cross-case analysis of three qualitative studies

    Science.gov (United States)

    Dillon, Deborah R.; O'Brien, David G.; Moje, Elizabeth B.; Stewart, Roger A.

    The purpose of this cross-case analysis is to illustrate how and why literacy was incorporated into science teaching and learning in three secondary classrooms. Research questions guiding the analysis include: (a) How were literacy events shaped by the teachers' philosophies about teaching science content and teaching students? and (b) How was literacy (reading, writing, and oral language) structured by the teachers and manifested in science lessons? The methodology of ethnography and the theoretical framework of symbolic interactionism were employed in the three studies on which the cross-case analysis was based. The researchers assumed the role of participant observers, collecting data over the period of 1 year in each of the three classrooms. Data, in the form of fieldnotes, interviews, and artifacts, were collected. In each study, data were analyzed using the constant comparative method (Glaser & Strauss, 1967) to determine patterns in the teachers' beliefs about learning and how these influenced their choice of literacy activities. The cross-case analysis was conducted to determine patterns across the three teachers and their classrooms. The findings from this analysis are used to compare how the teachers' philosophies of teaching science and their beliefs about how students learn influenced their use of literacy practices during lessons. Specifically, each teacher's use of literacy activities varied based on his or her beliefs about teaching science concepts. Furthermore, reading, writing, and oral language were important vehicles to learning science concepts within daily classroom activities in the three classrooms.Received: 1 April 1993; Revised: 30 August 1993;

  6. Visual analysis in single case experimental design studies: brief review and guidelines.

    Science.gov (United States)

    Lane, Justin D; Gast, David L

    2014-01-01

    Visual analysis of graphic displays of data is a cornerstone of studies using a single case experimental design (SCED). Data are graphed for each participant during a study with trend, level, and stability of data assessed within and between conditions. Reliable interpretations of effects of an intervention are dependent on researchers' understanding and use of systematic procedures. The purpose of this paper is to provide readers with a rationale for visual analysis of data when using a SCED, a step-by-step guide for conducting a visual analysis of graphed data, as well as to highlight considerations for persons interested in using visual analysis to evaluate an intervention, especially the importance of collecting reliability data for dependent measures and fidelity of implementation of study procedures.

  7. Hybrid-Wing-Body Vehicle Composite Fuselage Analysis and Case Study

    Science.gov (United States)

    Mukhopadhyay, Vivek

    2014-01-01

    Recent progress in the structural analysis of a Hybrid Wing-Body (HWB) fuselage concept is presented with the objective of structural weight reduction under a set of critical design loads. This pressurized efficient HWB fuselage design is presently being investigated by the NASA Environmentally Responsible Aviation (ERA) project in collaboration with the Boeing Company, Huntington Beach. The Pultruded Rod-Stiffened Efficient Unitized Structure (PRSEUS) composite concept, developed at the Boeing Company, is approximately modeled for an analytical study and finite element analysis. Stiffened plate linear theories are employed for a parametric case study. Maximum deflection and stress levels are obtained with appropriate assumptions for a set of feasible stiffened panel configurations. An analytical parametric case study is presented to examine the effects of discrete stiffener spacing and skin thickness on structural weight, deflection and stress. A finite-element model (FEM) of an integrated fuselage section with bulkhead is developed for an independent assessment. Stress analysis and scenario based case studies are conducted for design improvement. The FEM model specific weight of the improved fuselage concept is computed and compared to previous studies, in order to assess the relative weight/strength advantages of this advanced composite airframe technology

  8. 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 ...

  9. 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,.

  10. Fatigue failure analysis of vibrating screen spring by means of finite element simulation: a case study

    OpenAIRE

    Franco Rodríguez, Rosendo

    2017-01-01

    Vibrating screens are often used in the mining industry to separate mineral particles by size. In many designs, spring arrays are used to provide the system with the necessary stiffness for screens to vibrate in a controlled manner. Naturally, these springs are subjected to varying loading cycles, which can cause their premature fatigue failure. This behavior has been studied by means of finite element analysis and compared with data obtained from a real case scenario, in which a helical spri...

  11. Impact of additive manufacturing on supply chain network structures –an exploratory case study analysis

    OpenAIRE

    Oettmeier, Katrin

    2016-01-01

    Purpose: This paper demonstrates that additive manufacturing (AM), as a technological driver, has the potential to change the structural composition of entire supply chains. The research comprises a first, systematic analysis about the impact of AM on the network structures in engineer-to-order supply chains. Research Approach: The paper pursues an inductive research approach. Building on contingency theory as well as on general systems theory, and using extensive case studies from the...

  12. A Distinctive Analysis of Case Study, Action Research and Design Science Research

    Directory of Open Access Journals (Sweden)

    Aline Dresch

    2015-11-01

    Full Text Available Objective – This paper aims at analyzing the difference between research methods that are typical in operations management (case study and action research with design science research. Design/methodology/approach – The paper adopts a theoretical-conceptual methodological approach, based on an extensive literature review. The literature review focused on studies that discuss the use of Case Study, Action Research and Design Science/Design Science Research. Theoretical framework – This paper reveals the foundations of Case Study and Action Research. Due to its recent use as a research method, Design Science Research is presented in greater depth. Findings – Firstly, we present design science and design science research as paradigms and as research methods, respectively, in the field of management. Secondly, we present the difference between Natural Sciences, Social Sciences and Design Science. Thirdly, we carry out comparative analysis of research methods Case Study, Action Research and Design Science Research. Finally, we offer a set of suggestions for future research regarding the use of research methods in management, in general, and in operations management, inparticular. Contributions – The main contributions of this paper focus on reflecting about research methods used in the management field. An important contribution is expanding the repertoire of research methods for understanding and using Design Science Research. The use of this method can contribute to reduce the distance between rigor and relevance, which has been described by several authors.

  13. The making of nursing practice law in Lebanon: a policy analysis case study.

    Science.gov (United States)

    El-Jardali, Fadi; Hammoud, Rawan; Younan, Lina; Nuwayhid, Helen Samaha; Abdallah, Nadine; Alameddine, Mohammad; Bou-Karroum, Lama; Salman, Lana

    2014-09-05

    Evidence-informed decisions can strengthen health systems, improve health, and reduce health inequities. Despite the Beijing, Montreux, and Bamako calls for action, literature shows that research evidence is underemployed in policymaking, especially in the East Mediterranean region (EMR). Selecting the draft nursing practice law as a case study, this policy analysis exercise aims at generating in-depth insights on the public policymaking process, identifying the factors that influence policymaking and assessing to what extent evidence is used in this process. This study utilized a qualitative research design using a case study approach and was conducted in two phases: data collection and analysis, and validation. In the first phase, data was collected through key informant interviews that covered 17 stakeholders. In the second phase, a panel discussion was organized to validate the findings, identify any gaps, and gain insights and feedback of the panelists. Thematic analysis was conducted and guided by the Walt & Gilson's "Policy Triangle Framework" as themes were categorized into content, actors, process, and context. Findings shed light on the complex nature of health policymaking and the unstructured approach of decision making. This study uncovered the barriers that hindered the progress of the draft nursing law and the main barriers against the use of evidence in policymaking. Findings also uncovered the risk involved in the use of international recommendations without the involvement of stakeholders and without accounting for contextual factors and implementation barriers. Findings were interpreted within the context of the Lebanese political environment and the power play between stakeholders, taking into account equity considerations. This policy analysis exercise presents findings that are helpful for policymakers and all other stakeholders and can feed into revising the draft nursing law to reach an effective alternative that is feasible in Lebanon. Our

  14. Meta-analysis without study-specific variance information: Heterogeneity case.

    Science.gov (United States)

    Sangnawakij, Patarawan; Böhning, Dankmar; Niwitpong, Sa-Aat; Adams, Stephen; Stanton, Michael; Holling, Heinz

    2017-01-01

    The random effects model in meta-analysis is a standard statistical tool often used to analyze the effect sizes of the quantity of interest if there is heterogeneity between studies. In the special case considered here, meta-analytic data contain only the sample means in two treatment arms and the sample sizes, but no sample standard deviation. The statistical comparison between two arms for this case is not possible within the existing meta-analytic inference framework. Therefore, the main objective of this paper is to estimate the overall mean difference and associated variances, the between-study variance and the within-study variance, as specified as the important elements in the random effects model. These estimators are obtained using maximum likelihood estimation. The standard errors of the estimators and a quantification of the degree of heterogeneity are also investigated. A measure of heterogeneity is suggested which adjusts the original suggested measure of Higgins' I 2 for within study sample size. The performance of the proposed estimators is evaluated using simulations. It can be concluded that all estimated means converged to their associated true parameter values, and its standard errors tended to be small if the number of the studies involved in the meta-analysis was large. The proposed estimators could be favorably applied in a meta-analysis on comparing two surgeries for asymptomatic congenital lung malformations in young children.

  15. 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.

  16. Improving the effectiveness of FMEA analysis in automotive – a case study

    Directory of Open Access Journals (Sweden)

    Ványi Gábor

    2016-06-01

    Full Text Available Many industries, for example automotive, have well defined product development process definitions and risk evaluation methods. The FMEA (Failure Mode and Effects Analysis is a first line risk analysis method in design, which has been implemented in development and production since decades. Although the first applications were focusing on mechanical and electrical design and functionalities, today, software components are implemented in many modern vehicle systems. However, standards or industry specific associations do not specify any “best practice” how to design the interactions of multiple entities in one model. This case study focuses on modelling interconnections and on the improvement of the FMEA modelling process in the automotive. Selecting and grouping software components for the analysis is discussed, but software architect design patterns are excluded from the study.

  17. Modelling and Analysis of Smart Grid: A Stochastic Model Checking Case Study

    DEFF Research Database (Denmark)

    Yuksel, Ender; Zhu, Huibiao; Nielson, Hanne Riis

    2012-01-01

    that require novel methods and applications. In this context, an important issue is the verification of certain quantitative properties of the system. In this paper, we consider a specific Chinese Smart Grid implementation as a case study and address the verification problem for performance and energy......Cyber-physical systems integrate information and communication technology functions to the physical elements of a system for monitoring and controlling purposes. The conversion of traditional power grid into a smart grid, a fundamental example of a cyber-physical system, raises a number of issues...... consumption. We employ stochastic model checking approach and present our modelling and analysis study using PRISM model checker....

  18. Quantitative modelling and analysis of a Chinese smart grid: a stochastic model checking case study

    DEFF Research Database (Denmark)

    Yuksel, Ender; Nielson, Hanne Riis; Nielson, Flemming

    2014-01-01

    that require novel methods and applications. One of the important issues in this context is the verification of certain quantitative properties of the system. In this paper, we consider a specific Chinese smart grid implementation as a case study and address the verification problem for performance and energy......Cyber-physical systems integrate information and communication technology with the physical elements of a system, mainly for monitoring and controlling purposes. The conversion of traditional power grid into a smart grid, a fundamental example of a cyber-physical system, raises a number of issues...... consumption.We employ stochastic model checking approach and present our modelling and analysis study using PRISM model checker....

  19. Two energy system analysis - cases

    DEFF Research Database (Denmark)

    Lund, Henrik; Antonoff, Jayson; Andersen, Anders N.

    2004-01-01

    The chapter presents tow cases of energy system analysis, illustrating the types of tools and methodologies presently being used for these studies in Denamrk and elsewhere.......The chapter presents tow cases of energy system analysis, illustrating the types of tools and methodologies presently being used for these studies in Denamrk and elsewhere....

  20. Review of human error analysis methodologies and case study for accident management

    International Nuclear Information System (INIS)

    Jung, Won Dae; Kim, Jae Whan; Lee, Yong Hee; Ha, Jae Joo

    1998-03-01

    In this research, we tried to establish the requirements for the development of a new human error analysis method. To achieve this goal, we performed a case study as following steps; 1. review of the existing HEA methods 2. selection of those methods which are considered to be appropriate for the analysis of operator's tasks in NPPs 3. choice of tasks for the application, selected for the case study: HRMS (Human reliability management system), PHECA (Potential Human Error Cause Analysis), CREAM (Cognitive Reliability and Error Analysis Method). And, as the tasks for the application, 'bleed and feed operation' and 'decision-making for the reactor cavity flooding' tasks are chosen. We measured the applicability of the selected methods to the NPP tasks, and evaluated the advantages and disadvantages between each method. The three methods are turned out to be applicable for the prediction of human error. We concluded that both of CREAM and HRMS are equipped with enough applicability for the NPP tasks, however, compared two methods. CREAM is thought to be more appropriate than HRMS from the viewpoint of overall requirements. The requirements for the new HEA method obtained from the study can be summarized as follows; firstly, it should deal with cognitive error analysis, secondly, it should have adequate classification system for the NPP tasks, thirdly, the description on the error causes and error mechanisms should be explicit, fourthly, it should maintain the consistency of the result by minimizing the ambiguity in each step of analysis procedure, fifty, it should be done with acceptable human resources. (author). 25 refs., 30 tabs., 4 figs

  1. Review of human error analysis methodologies and case study for accident management

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Won Dae; Kim, Jae Whan; Lee, Yong Hee; Ha, Jae Joo

    1998-03-01

    In this research, we tried to establish the requirements for the development of a new human error analysis method. To achieve this goal, we performed a case study as following steps; 1. review of the existing HEA methods 2. selection of those methods which are considered to be appropriate for the analysis of operator`s tasks in NPPs 3. choice of tasks for the application, selected for the case study: HRMS (Human reliability management system), PHECA (Potential Human Error Cause Analysis), CREAM (Cognitive Reliability and Error Analysis Method). And, as the tasks for the application, `bleed and feed operation` and `decision-making for the reactor cavity flooding` tasks are chosen. We measured the applicability of the selected methods to the NPP tasks, and evaluated the advantages and disadvantages between each method. The three methods are turned out to be applicable for the prediction of human error. We concluded that both of CREAM and HRMS are equipped with enough applicability for the NPP tasks, however, compared two methods. CREAM is thought to be more appropriate than HRMS from the viewpoint of overall requirements. The requirements for the new HEA method obtained from the study can be summarized as follows; firstly, it should deal with cognitive error analysis, secondly, it should have adequate classification system for the NPP tasks, thirdly, the description on the error causes and error mechanisms should be explicit, fourthly, it should maintain the consistency of the result by minimizing the ambiguity in each step of analysis procedure, fifty, it should be done with acceptable human resources. (author). 25 refs., 30 tabs., 4 figs.

  2. Improving Library Management by Using Cost Analysis Tools: A Case Study for Cataloguing Processes

    Directory of Open Access Journals (Sweden)

    Lorena Siguenza-Guzman

    2014-02-01

    Full Text Available TTDABC is a relatively new costing management technique, initially developed for manufacturing processes, which is gaining attention in libraries. This is because TDABC is a fast and simple method that only requires two parameters, an estimation of time required to perform an activity and the unit cost per time of supplying capacity. A few case studies have been documented with regard to TDABC in libraries; all of them being oriented to analyse specific library activities such as inter-library loan, acquisition and circulation processes. The primary focus of this paper is to describe TDABC implementation in one of the most important library processes, namely cataloguing. In particular, original and copy cataloguing are analysed through a case study to demonstrate the applicability and usefulness of TDABC to perform cost analysis of cataloguing processes.

  3. Toward a model of curriculum analysis and evaluation - Beka: a case study from Australia.

    Science.gov (United States)

    Hall, Catherine E A

    2014-03-01

    All curricula vary in the way that it is constructed, implemented and experienced. Regardless of the context, ongoing evaluation of learning objectives, processes and content within curriculum is critical. Based primarily on the work of Glatthorn (1987), Print (1993) and Reid (2005), this paper describes a case study of an undergraduate nursing curriculum. The analysis described in this paper forms the basis of a process incorporating four key steps: benchmarking, evidencing, knowing and applying (BEKA). By critiquing the literature, and explaining the merge of others' processes and models of curriculum analysis, it is argued that the BEKA framework of curriculum analysis forms a useful and powerful tool enabling understanding of the actual process of teaching, coverage of curriculum content and assessment, and demonstrating linkages between theory and practice. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. The use of the bootstrap in the analysis of case-control studies with missing data

    DEFF Research Database (Denmark)

    Siersma, Volkert Dirk; Johansen, Christoffer

    2004-01-01

    nonparametric bootstrap, bootstrap confidence intervals, missing values, multiple imputation, matched case-control study......nonparametric bootstrap, bootstrap confidence intervals, missing values, multiple imputation, matched case-control study...

  5. Renewable energy technology portfolio planning with scenario analysis: A case study for Taiwan

    International Nuclear Information System (INIS)

    Chen, T.-Y.; Yu, Oliver S.; Hsu, George Jyh-yih; Hsu, Fang-Ming; Sung, W.-N.

    2009-01-01

    This paper presents the results of a case study of applying a systematic and proven process of technology portfolio planning with the use of scenario analysis to renewable energy developments in Taiwan. The planning process starts with decision values of technology development based on a survey of society leaders. It then generates, based on expert opinions and literature search, a set of major technology alternatives, which in this study include: wind energy, photovoltaic, bio-energy, solar thermal power, ocean energy, and geothermal energy. Through a committee of technical experts with diversified professional backgrounds, the process in this study next constructs three scenarios ('Season in the Sun', 'More Desire than Energy', and 'Castle in the Air') to encompass future uncertainties in the relationships between the technology alternatives and the decision values. Finally, through a second committee of professionals, the process assesses the importance and risks of these alternative technologies and develops a general strategic plan for the renewable energy technology portfolio that is responsive and robust for the future scenarios. The most important contributions of this paper are the clear description of the systematic process of technology portfolio planning and scenario analysis, the detailed demonstration of their application through a case study on the renewable energy development in Taiwan, and the valuable results and insights gained from the application.

  6. Identification of Excess Heat Utilisation Potential using GIS: Analysis of Case Studies for Denmark

    DEFF Research Database (Denmark)

    Bühler, Fabian; Petrovic, Stefan; Ommen, Torben Schmidt

    2017-01-01

    Excess heat is present in many sectors, such as the industry and utility. The utilization of these heat sources could reduce the primary energy consumption and thus reduce carbon dioxide emissions. This work presents the results of a geographical mapping of excess heat, in which excess heat from...... evaluation and comparison of the feasibility of different matches can be performed. The evaluation of the identified case studies shows that it is economically feasible to connect the heat source to the public energy network or use the heat to generate electricity. However, the uncertainty analysis suggests...

  7. Developing and using a balanced scorecard: a case study with SWOT analysis.

    Science.gov (United States)

    Gumbus, Andra; Lussier, Robert N

    2003-01-01

    Have you tried to measure your laboratory's performance lately? Do you measure and assess financial results, customer satisfaction, internal process efficiency, and learning and growth? If any of these metrics are missing from your performance measurement system, you are not using the latest management tool that is sweeping the health-care industry--the balanced scorecard (BSC). This article begins with a discussion of the BSC and why you should use it in your laboratory, followed by SWOT analysis to assess the strengths, weaknesses, opportunities, and threats (SWOT) a BSC offers your laboratory. A laboratory case study is then presented to assist you in developing and using a BSC in your laboratory.

  8. Reduced Risk of Barrett's Esophagus in Statin Users: Case-Control Study and Meta-Analysis.

    Science.gov (United States)

    Beales, Ian L P; Dearman, Leanne; Vardi, Inna; Loke, Yoon

    2016-01-01

    Use of statins has been associated with a reduced incidence of esophageal adenocarcinoma in population-based studies. However there are few studies examining statin use and the development of Barrett's esophagus. The purpose of this study was to examine the association between statin use and the presence of Barrett's esophagus in patients having their first gastroscopy. We have performed a case-control study comparing statin use between patients with, and without, an incident diagnosis of non-dysplastic Barrett's esophagus. Male Barrett's cases (134) were compared to 268 male age-matched controls in each of two control groups (erosive gastro-esophageal reflux and dyspepsia without significant upper gastrointestinal disease). Risk factor and drug exposure were established using standardised interviews. Logistic regression was used to compare statin exposure and correct for confounding factors. We performed a meta-analysis pooling our results with three other case-control studies. Regular statin use was associated with a significantly lower incidence of Barrett's esophagus compared to the combined control groups [adjusted OR 0.62 (95 % confidence intervals 0.37-0.93)]. This effect was more marked in combined statin plus aspirin users [adjusted OR 0.43 (95 % CI 0.21-0.89)]. The inverse association between statin or statin plus aspirin use and risk of Barrett's was significantly greater with longer duration of use. Meta-analysis of pooled data (1098 Barrett's, 2085 controls) showed that statin use was significantly associated with a reduced risk of Barrett's esophagus [pooled adjusted OR 0.63 (95 % CI 0.51-0.77)]. Statin use is associated with a reduced incidence of a new diagnosis of Barrett's esophagus.

  9. Societal acceptance of wind farms: Analysis of four common themes across Australian case studies

    International Nuclear Information System (INIS)

    Hall, N.; Ashworth, P.; Devine-Wright, P.

    2013-01-01

    Australia's renewable energy target (RET) seeks to provide 20 per cent of Australia's electricity generation from renewable energy sources by 2020. As wind power is relatively advanced, it was anticipated that wind power will contribute a major component of the early target. However, high levels of societal resistance to wind farms, combined with new regulatory policies, indicate the RET may not be dominated by wind power. This research involved an examination of seven case studies around wind farm deployment. Qualitative interviews were the primary data for the case studies and analysed using methods informed by grounded theory. Despite the diversity of stakeholder views, the qualitative analysis identified strong community support for wind farms but four common themes emerged that influence this societal acceptance of wind farms in Australia: trust, distributional justice, procedural justice and place attachment. Without addressing these factors through integration into policy development and engagement approaches, wind energy is unlikely to provide the early and majority of new renewable energy. Similar international experiences are incorporated in the discussion of the Australian wind industry's societal acceptance. - Highlights: ► Seven case studies of wind farms in Australia are described. ► Acceptance affects whether wind significantly contributes to the Aust. RE target. ► Four themes were identified regarding societal acceptance of Australian wind farms. ► Four themes are trust, distributional and procedural justice, and place attachment. ► International similarities to the Australian experience are provided

  10. Alcohol and tobacco consumption as risk factors for Alzheimer's disease: A collaborative re-analysis of case-control studies

    NARCIS (Netherlands)

    A.B. Graves; C.M. van Duijn (Cornelia); V. Chandra; L. Fratiglioni (Laura); A. Heyman; A.F. Jorm; E. Kokmen (Emre); K. Kondo; J.A. Mortimer; W.A. Rocca; S.L. Shalat; H. Soininen; A. Hofman (Albert)

    1991-01-01

    textabstractA meta-analysis, involving the secondary analysis of original data from 11 case-control studies of Alzheimer's disease, is presented for alcohol consumption and cigarette smoking. Five studies included in the meta-analysis of alcohol consumption. Alcohol consumption was computed in terms

  11. Strategic patent analysis in plant biotechnology: terpenoid indole alkaloid metabolic engineering as a case study.

    Science.gov (United States)

    Miralpeix, Bruna; Sabalza, Maite; Twyman, Richard M; Capell, Teresa; Christou, Paul

    2014-02-01

    The do-it-yourself patent search is a useful alternative to professional patent analysis particularly in the context of publicly funded projects where funds for IP activities may be limited. As a case study, we analysed patents related to the engineering of terpenoid indole alkaloid (TIA) metabolism in plants. We developed a focused search strategy to remove redundancy and reduce the workload without missing important and relevant patents. This resulted in the identification of approximately 50 key patents associated with TIA metabolic engineering in plants, which could form the basis of a more detailed freedom-to-operate analysis. The structural elements of this search strategy could easily be transferred to other contexts, making it a useful generic model for publicly funded research projects. © 2014 Society for Experimental Biology, Association of Applied Biologists and John Wiley & Sons Ltd.

  12. Detecting and characterizing high-frequency oscillations in epilepsy: a case study of big data analysis

    Science.gov (United States)

    Huang, Liang; Ni, Xuan; Ditto, William L.; Spano, Mark; Carney, Paul R.; Lai, Ying-Cheng

    2017-01-01

    We develop a framework to uncover and analyse dynamical anomalies from massive, nonlinear and non-stationary time series data. The framework consists of three steps: preprocessing of massive datasets to eliminate erroneous data segments, application of the empirical mode decomposition and Hilbert transform paradigm to obtain the fundamental components embedded in the time series at distinct time scales, and statistical/scaling analysis of the components. As a case study, we apply our framework to detecting and characterizing high-frequency oscillations (HFOs) from a big database of rat electroencephalogram recordings. We find a striking phenomenon: HFOs exhibit on-off intermittency that can be quantified by algebraic scaling laws. Our framework can be generalized to big data-related problems in other fields such as large-scale sensor data and seismic data analysis.

  13. Application of multicriteria decision analysis tools to two contaminated sediment case studies.

    Science.gov (United States)

    Yatsalo, Boris I; Kiker, Gregory A; Kim, St Jongbum; Bridges, Todd S; Seager, Thomas P; Gardner, Kevin; Satterstrom, F Kyle; Linkov, Igor

    2007-04-01

    Environmental decision making is becoming increasingly more information intensive and complex. Our previous work shows that multicriteria decision analysis (MCDA) tools offer a scientifically sound decision analytical framework for environmental management, in general, and specifically for selecting optimal sediment management alternatives. Integration of MCDA into risk assessment and sediment management may require linkage of different models and software platforms whose results may lead to somewhat different conclusions. This paper illustrates the application of 3 different MCDA methods in 2 case studies involving contaminated sediment management. These case studies are based on real sediment management problems experienced by the US Army Corps of Engineers and other stakeholders in New York/New Jersey Harbor, USA, and the Cocheco River Superfund Site in New Hampshire, USA. Our analysis shows that application of 3 different MCDA tools points to similar management solutions no matter which tool is applied. MCDA tools and approaches were constructively used to elicit the strengths and weaknesses of each method when solving the problem.

  14. Study on Adaptive Parameter Determination of Cluster Analysis in Urban Management Cases

    Science.gov (United States)

    Fu, J. Y.; Jing, C. F.; Du, M. Y.; Fu, Y. L.; Dai, P. P.

    2017-09-01

    The fine management for cities is the important way to realize the smart city. The data mining which uses spatial clustering analysis for urban management cases can be used in the evaluation of urban public facilities deployment, and support the policy decisions, and also provides technical support for the fine management of the city. Aiming at the problem that DBSCAN algorithm which is based on the density-clustering can not realize parameter adaptive determination, this paper proposed the optimizing method of parameter adaptive determination based on the spatial analysis. Firstly, making analysis of the function Ripley's K for the data set to realize adaptive determination of global parameter MinPts, which means setting the maximum aggregation scale as the range of data clustering. Calculating every point object's highest frequency K value in the range of Eps which uses K-D tree and setting it as the value of clustering density to realize the adaptive determination of global parameter MinPts. Then, the R language was used to optimize the above process to accomplish the precise clustering of typical urban management cases. The experimental results based on the typical case of urban management in XiCheng district of Beijing shows that: The new DBSCAN clustering algorithm this paper presents takes full account of the data's spatial and statistical characteristic which has obvious clustering feature, and has a better applicability and high quality. The results of the study are not only helpful for the formulation of urban management policies and the allocation of urban management supervisors in XiCheng District of Beijing, but also to other cities and related fields.

  15. STUDY ON ADAPTIVE PARAMETER DETERMINATION OF CLUSTER ANALYSIS IN URBAN MANAGEMENT CASES

    Directory of Open Access Journals (Sweden)

    J. Y. Fu

    2017-09-01

    Full Text Available The fine management for cities is the important way to realize the smart city. The data mining which uses spatial clustering analysis for urban management cases can be used in the evaluation of urban public facilities deployment, and support the policy decisions, and also provides technical support for the fine management of the city. Aiming at the problem that DBSCAN algorithm which is based on the density-clustering can not realize parameter adaptive determination, this paper proposed the optimizing method of parameter adaptive determination based on the spatial analysis. Firstly, making analysis of the function Ripley's K for the data set to realize adaptive determination of global parameter MinPts, which means setting the maximum aggregation scale as the range of data clustering. Calculating every point object’s highest frequency K value in the range of Eps which uses K-D tree and setting it as the value of clustering density to realize the adaptive determination of global parameter MinPts. Then, the R language was used to optimize the above process to accomplish the precise clustering of typical urban management cases. The experimental results based on the typical case of urban management in XiCheng district of Beijing shows that: The new DBSCAN clustering algorithm this paper presents takes full account of the data’s spatial and statistical characteristic which has obvious clustering feature, and has a better applicability and high quality. The results of the study are not only helpful for the formulation of urban management policies and the allocation of urban management supervisors in XiCheng District of Beijing, but also to other cities and related fields.

  16. Holistic stakeholder-oriented and case study-based risk analysis

    Science.gov (United States)

    Heisterkamp, Tobias

    2013-04-01

    Case studies of storm events in the Berlin conurbation demonstrate the chance of a holistic approach and its potential data sources. Data sets of population, but also data provided by insurance and transport companies, and operating data provided by fire brigades, are used. Various indicators for risk analysis are constructed to identify hot spots. These hot spots can be shortcomings or critical aspects in structure, communication, the warning chain, or even in the structure of potentially affected stakeholders or in the civil protection system itself. Due to increasing complexity of interactions and interdependencies in or between societies and nature, it is important to choose a holistic approach. For risk analyses like the storms in Berlin, it captures many important factors with their effects. For risk analyses, it is important to take potential users into concern: The analysis gets important due to its use later on. In addition to a theoretical background, a focus on the application should be set from the beginning on. To get usable results, it is helpful to complement the theoretical meta-level by a stakeholder-oriented level. An iterative investigation and combination of different layers for the risk analysis explores important influencing factors and allows a tailoring of results to different stakeholder groups. Layers are indicators, gained from data sets like losses from insurance data. Tailoring is important, because of different requirements e.g. by technical or medical assistance. Stakeholders' feedback in the iterative investigation also shows structural limitations for later applications, like special laws the fire brigades have to deal with. Additionally, using actors' perspectives offers the chance to convince practitioners of taking part in the analysis. Their participation is an essential component in applied science. They are important data suppliers, whose goodwill is needed to ensure good results. Based on their experience, they can also help

  17. Human-centered modeling in human reliability analysis: some trends based on case studies

    International Nuclear Information System (INIS)

    Mosneron-Dupin, F.; Reer, B.; Heslinga, G.; Straeter, O.; Gerdes, V.; Saliou, G.; Ullwer, W.

    1997-01-01

    As an informal working group of researchers from France, Germany and The Netherlands created in 1993, the EARTH association is investigating significant subjects in the field of human reliability analysis (HRA). Our initial review of cases from nuclear operating experience showed that decision-based unrequired actions (DUA) contribute to risk significantly on the one hand. On the other hand, our evaluation of current HRA methods showed that these methods do not cover such actions adequately. Especially, practice-oriented guidelines for their predictive identification are lacking. We assumed that a basic cause for such difficulties was that these methods actually use a limited representation of the stimulus-organism-response (SOR) paradigm. We proposed a human-centered model, which better highlights the active role of the operators and the importance of their culture, attitudes and goals. This orientation was encouraged by our review of current HRA research activities. We therefore decided to envisage progress by identifying cognitive tendencies in the context of operating and simulator experience. For this purpose, advanced approaches for retrospective event analysis were discussed. Some orientations for improvements were proposed. By analyzing cases, various cognitive tendencies were identified, together with useful information about their context. Some of them match psychological findings already published in the literature, some of them are not covered adequately by the literature that we reviewed. Finally, this exploratory study shows that contextual and case-illustrated findings about cognitive tendencies provide useful help for the predictive identification of DUA in HRA. More research should be carried out to complement our findings and elaborate more detailed and systematic guidelines for using them in HRA studies

  18. Extending "Deep Blue" Aerosol Retrieval Coverage to Cases of Absorbing Aerosols Above Clouds: Sensitivity Analysis and First Case Studies

    Science.gov (United States)

    Sayer, A. M.; Hsu, N. C.; Bettenhausen, C.; Lee, J.; Redemann, J.; Schmid, B.; Shinozuka, Y.

    2016-01-01

    Cases of absorbing aerosols above clouds (AACs), such as smoke or mineral dust, are omitted from most routinely processed space-based aerosol optical depth (AOD) data products, including those from the Moderate Resolution Imaging Spectroradiometer (MODIS). This study presents a sensitivity analysis and preliminary algorithm to retrieve above-cloud AOD and liquid cloud optical depth (COD) for AAC cases from MODIS or similar sensors, for incorporation into a future version of the "Deep Blue" AOD data product. Detailed retrieval simulations suggest that these sensors should be able to determine AAC AOD with a typical level of uncertainty approximately 25-50 percent (with lower uncertainties for more strongly absorbing aerosol types) and COD with an uncertainty approximately10-20 percent, if an appropriate aerosol optical model is known beforehand. Errors are larger, particularly if the aerosols are only weakly absorbing, if the aerosol optical properties are not known, and the appropriate model to use must also be retrieved. Actual retrieval errors are also compared to uncertainty envelopes obtained through the optimal estimation (OE) technique; OE-based uncertainties are found to be generally reasonable for COD but larger than actual retrieval errors for AOD, due in part to difficulties in quantifying the degree of spectral correlation of forward model error. The algorithm is also applied to two MODIS scenes (one smoke and one dust) for which near-coincident NASA Ames Airborne Tracking Sun photometer (AATS) data were available to use as a ground truth AOD data source, and found to be in good agreement, demonstrating the validity of the technique with real observations.

  19. Vulnerability analysis of Landslide hazard area: Case study of South Korea

    Science.gov (United States)

    Oh, Chaeyeon; Jun, Kyewon; Kim, Younghwan

    2017-04-01

    Recently such as Landslide and debris flow are occurring over the due to climate changes, frequent sedimentation disaster in mountains area. A scientific analysis of landslide risk areas along with the collection and analysis of a variety of spatial information would be critical for minimizing damage in the event of mountainous disasters such as landslide and debris flow. We carried out a case study of the selected areas at Inje, Gangwon province which suffered from serious landslides due to flash floods by Typhoon Ewiniar in 2006. Landslide and debris flow locations were identified in the study area from interpretation of airborne image and field surveys. We used GIS to construct a spatial information database integrating the data required for a comprehensive analysis of landslide risk areas including geography, hydrology, pedology, and forestry. Furthermore, this study evaluates slope stability of the affected areas using SINMAP(Stability Index Mapping), analyzes spatial data that have high correlation with selected landslide areas using Likelihood ratio. And by applying the Weight of evidence techniques weight values (W+ and W-) which were calculated for each element. We then analyzed the spatial data which were significantly correlated with the landslide occurrence and predicted the mountainous areas with elevated risks of landslide which are vulnerable to disasters, and the hazard map was generated using GIS. Acknowledgments This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT & Future Planning(No.NRF-2014R1A1A3050495).

  20. Meta-Analysis of Single-Case Research Design Studies on Instructional Pacing.

    Science.gov (United States)

    Tincani, Matt; De Mers, Marilyn

    2016-11-01

    More than four decades of research on instructional pacing has yielded varying and, in some cases, conflicting findings. The purpose of this meta-analysis was to synthesize single-case research design (SCRD) studies on instructional pacing to determine the relative benefits of brisker or slower pacing. Participants were children and youth with and without disabilities in educational settings, excluding higher education. Tau-U, a non-parametric statistic for analyzing data in SCRD studies, was used to determine effect size estimates. The article extraction yielded 13 instructional pacing studies meeting contemporary standards for high quality SCRD research. Eleven of the 13 studies reported small to large magnitude effects when two or more pacing parameters were compared, suggesting that instructional pacing is a robust instructional variable. Brisker instructional pacing with brief inter-trial interval (ITI) produced small increases in correct responding and medium to large reductions in challenging behavior compared with extended ITI. Slower instructional pacing with extended wait-time produced small increases in correct responding, but also produced small increases in challenging behavior compared with brief wait-time. Neither brief ITI nor extended wait-time meets recently established thresholds for evidence-based practice, highlighting the need for further instructional pacing research. © The Author(s) 2016.

  1. Process and impact of mergers of NHS trusts: multicentre case study and management cost analysis.

    Science.gov (United States)

    Fulop, Naomi; Protopsaltis, Gerasimos; Hutchings, Andrew; King, Annette; Allen, Pauline; Normand, Charles; Walters, Rhiannon

    2002-08-03

    To study the processes involved in and impact of mergers between NHS trusts, including the effect on management costs. Cross sectional study involving in depth interviews and documentary analysis; case study to compare savings in management costs between case trusts and control trusts. Nine trusts (cross sectional study) and four trusts (case study) in London. 96 interviews with trust board members, other senior managers, clinicians, service managers, and representatives of health authorities, regional office, community health councils, local authorities, other trusts in the area, and primary care groups and trusts. Stated and unstated drivers, and impact of merger on delivery and development of services, management structures, and staff recruitment, retention, and morale. Effects of difference in trust size before and after the merger. Savings in management costs two years after merger. Some important drivers for merger are not publicly stated. Mergers had a negative effect on delivery of services because of a loss of managerial focus on services. Planned developments in services were delayed by at least 18 months. Trusts' larger sizes after mergers had unintended negative consequences, as well as predicted advantages. The tendency for one trust's management team to dominate over the other resulted in tension. No improvement in recruitment or retention of clinical and managerial staff was reported. Perceived differences in organisational culture were an important barrier to bringing together two or more organisations. Two years after merger, merged trusts had not achieved the objective of saving pound 500 000 a year in management costs. Important unintended consequences need to be accounted for when mergers are planned. Mergers can cause considerable disruptions to services, and require greater management support than previously acknowledged. Other organisations undergoing restructuring, such as primary care groups developing into primary care trusts and health

  2. Rethinking a Case Study Method in Educational Research: A Comparative Analysis Method in Qualitative Research

    Science.gov (United States)

    Murakami, Yusuke

    2013-01-01

    There are two types of qualitative research that analyze a small number of cases or a single case: idiographic differentiation and nomothetic/generalization. There are few case studies of generalization. This is because theoretical inclination is weak in the field of education, and the binary framework of quantitative versus qualitative research…

  3. How Can Big Data Complement Expert Analysis? A Value Chain Case Study

    Directory of Open Access Journals (Sweden)

    Kyungtae Kim

    2018-03-01

    Full Text Available In the world of big data, there is a need to investigate how data-driven approaches can support expert-based analyses during a technology planning process. To meet this goal, we examined opportunities and challenges for big data analytics in the social sciences, particularly with respect to value chain analysis. To accomplish this, we designed a value chain mapping experiment that aimed to compare the results of expert-based and data-based mappings. In the expert-based approach, we asked an industry expert to visually depict an industry value chain based on insights and collected data. We also reviewed a previously published value chain developed by a panel of industry experts during a national technology planning process. In the data-driven analysis, we used a massive number of business transaction records between companies under the assumption that the data would be useful in identifying relationships between items in a value chain. The case study results demonstrated that data-driven analysis can help researchers understand the current status of industry structures, enabling them to develop more realistic, although less flexible value chain maps. This approach is expected to provide more value when used in combination with other databases. It is important to note that significant effort is required to develop an elaborate analysis algorithm, and data preprocessing is essential for obtaining meaningful results, both of which make this approach challenging. Experts’ insights are still helpful for validating the analytic results in value chain mapping.

  4. A case study in the misrepresentation of applied behavior analysis in autism: the gernsbacher lectures.

    Science.gov (United States)

    Morris, Edward K

    2009-01-01

    I know that most men, including those at ease with problems of the greatest complexity, can seldom accept the simplest and most obvious truth if it be such as would oblige them to admit the falsity of conclusions which they have proudly taught to others, and which they have woven, thread by thread, into the fabrics of their life. (Tolstoy, 1894)This article presents a case study in the misrepresentation of applied behavior analysis for autism based on Morton Ann Gernsbacher's presentation of a lecture titled "The Science of Autism: Beyond the Myths and Misconceptions." Her misrepresentations involve the characterization of applied behavior analysis, descriptions of practice guidelines, reviews of the treatment literature, presentations of the clinical trials research, and conclusions about those trials (e.g., children's improvements are due to development, not applied behavior analysis). The article also reviews applied behavior analysis' professional endorsements and research support, and addresses issues in professional conduct. It ends by noting the deleterious effects that misrepresenting any research on autism (e.g., biological, developmental, behavioral) have on our understanding and treating it in a transdisciplinary context.

  5. Spectrum analysis of national greenhouse gas emission: a case study of Germany

    International Nuclear Information System (INIS)

    Su, Meirong; Pauleit, Stephan; Xu, Chao

    2016-01-01

    It is essential to abstract the key information from accounting results of greenhouse gas (GHG) emissions because it can provide a highly generalized and clear picture of GHG emissions, which is especially helpful for the public and policy makers. To clearly display the composition of GHG emissions, the concept of spectrum analysis is introduced and defined in this paper. Next, a multilayer analysis framework for national GHG emissions was proposed, which is represented by a pyramid of three layers: total emissions (first layer), emissions decomposed by gas type or sector (second layer), and emissions decomposed by both gas type and sector (third layer). Based on the analysis results from the first to third layers, the main compositional information of national GHG emissions was gradually summarized and analyzed until a spectrum of GHG emissions was acquired. The spectrum of GHG emissions displays the compositional structure of national GHG emissions in the different layers, which is helpful in identifying priorities for emissions reduction. A case study of Germany's GHG emissions during 1990-2012 was conducted, which indicated that CO 2 and the energy sector were the biggest contributors to the total GHG emissions. Some suggestions for reducing GHG emissions are offered based on the obtained results. And the potential development of spectrum analysis for GHG emissions is also expected from aspects of both research and technology. (orig.)

  6. Spectrum analysis of national greenhouse gas emission: a case study of Germany

    Energy Technology Data Exchange (ETDEWEB)

    Su, Meirong [Dongguan University of Technology, School of Chemistry and Environmental Engineering, Dongguan, Guangdong Province (China); Beijing Normal University, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing (China); Technical University of Munich, Strategic Landscape Planning and Management, Freising (Germany); Pauleit, Stephan; Xu, Chao [Technical University of Munich, Strategic Landscape Planning and Management, Freising (Germany)

    2016-10-15

    It is essential to abstract the key information from accounting results of greenhouse gas (GHG) emissions because it can provide a highly generalized and clear picture of GHG emissions, which is especially helpful for the public and policy makers. To clearly display the composition of GHG emissions, the concept of spectrum analysis is introduced and defined in this paper. Next, a multilayer analysis framework for national GHG emissions was proposed, which is represented by a pyramid of three layers: total emissions (first layer), emissions decomposed by gas type or sector (second layer), and emissions decomposed by both gas type and sector (third layer). Based on the analysis results from the first to third layers, the main compositional information of national GHG emissions was gradually summarized and analyzed until a spectrum of GHG emissions was acquired. The spectrum of GHG emissions displays the compositional structure of national GHG emissions in the different layers, which is helpful in identifying priorities for emissions reduction. A case study of Germany's GHG emissions during 1990-2012 was conducted, which indicated that CO{sub 2} and the energy sector were the biggest contributors to the total GHG emissions. Some suggestions for reducing GHG emissions are offered based on the obtained results. And the potential development of spectrum analysis for GHG emissions is also expected from aspects of both research and technology. (orig.)

  7. The milk quality and feasebility analysis of loose housing dairy cows - a case study

    Directory of Open Access Journals (Sweden)

    Marjan Janžekovič

    2006-03-01

    Full Text Available The aim of the study was technological and economical analysis of free range cow breeding. The case study analyzed two different systems of holstein-friesian dairy cows breeding. The model total costs enterprise budget was developed for evaluation of economic feasibility of loose housing dairy cows in comparison with tied cow breeding system. Computer supported calculation enabled estimation of the most important economical parameters (net return, total cost, and coefficient of economics. Results obtained show that (at observed input parameters loose housing system is economically feasible, if there is a minimum of 41 dairy cows with an average milk production of 8610 kg per cow. It was also established that cows need approximately 6 months to fully adapt to the loose housing system.

  8. Analysis of tutoring in Calculus and Physics: a case study in Engineering courses

    Directory of Open Access Journals (Sweden)

    Jeronimo Becker Flores

    2017-05-01

    Full Text Available In this article, we analyzed the Calculus and Physics’ tutoring developed by a Higher Education Institution (HEI. The research consists of a qualitative approach of a type of case study. We began from the analytical reading of a theoretical basis which was relevant to the theme and then, we performed interviews with the professors responsible for the monitoring. The material was analyzed in the light of the Discursive Textual Analysis (DTA. As main results, we indicated that, in spite of the commonalities, there is no integrated work between Calculus and Physics subjects. In addition, we aimed the need of a reconciled pedagogical role among teachers, scholarship students and common ones. We also considered the need of future studies that reinforce and increase the discussions developed here.

  9. Multilingual Connotation Frames: A Case Study on Social Media for Targeted Sentiment Analysis and Forecast

    Energy Technology Data Exchange (ETDEWEB)

    Rashkin, Hannah J.; Bell, Eric B.; Choi, Yejin; Volkova, Svitlana

    2017-07-30

    People around the globe respond to major real world events through social media. To study targeted public sentiments across many languages and geographic locations, we introduce multilingual connotation frames: an extension from English connotation frames of Rashkin et al. (2016) with 10 additional European languages, focusing on the implied sentiments among event participants engaged in a frame. As a case study, we present large scale analysis on targeted public sentiments using 1.2 million multilingual connotation frames extracted from Twitter. We rely on connotation frames to build models to forecast country-specific connotation dynamics – perspective change over time towards salient entities and events. Our results demonstrate that connotation dynamics can be accurately predicted up to half a week in advance.

  10. Analysis of Shop Floor Performance through Discrete Event Simulation: A Case Study

    Directory of Open Access Journals (Sweden)

    Yeong Wei Ng

    2014-01-01

    Full Text Available Shop floor performance management is a method to ensure the effective utilization of people, processes, and equipment. Changes in the shop floor might have a positive or negative effect on production performance. Therefore, optimal shop floor operation is required to enhance shop floor performance and to ensure the long-term efficiency of the production process. This work presents a case study of a semiconductor industry. The punching department is modeled to investigate the effect of changes in the shop floor on production performance through discrete event simulation. The effects on the throughput rate, machine utilization, and labor utilization are studied by adjusting the volume of parts, number of operators, and flow pattern of parts in a series of models. Simulation results are tested and analyzed by using analysis of variance (ANOVA. The best model under changes in the shop floor is identified during the exploration of alternative scenarios.

  11. The Transfer of Knowledge in Intra-Organizational Networks: A Case Study Analysis

    Directory of Open Access Journals (Sweden)

    Sroka Włodzimierz

    2014-02-01

    Full Text Available `Background: In today’s business environment, a company is able to maintain its competitive position if it constantly generates knowledge and disseminates this knowledge within the organization, as well as transforms it into new competences. The ability to transfer knowledge becomes one of the key factors in the improvement of a company’s competitive position. This hypothesis is applicable particularly in the case of cooperation within networks, as they are an excellent opportunity for mutual learning between partners. Objectives: The purpose of the paper is to analyse the process of knowledge transfer in intra-organizational networks. Method: Due to the specificity of the research object, the case study method has been chosen. In order to make an in-depth analysis of the case study, we selected a group of several criteria based on the theory which we believe to be fundamental to the effectiveness of knowledge management in networks, and compared them with the situation in the ArcelorMittal Group. Results: Our research show that ArcelorMittal Group has met almost all the criteria of effective knowledge management in its intra-organizational network. Some exceptions, albeit merely to an extent, are mostly the result of historical circumstances, , i.e. the process of growth through acquisitions, and the acquisition of companies at different stages of organizational development, as well as organizational culture. Conclusion: Based on theoretical assumptions, the study analysed in details the components of knowledge management applied by the corporation in question. Therefore this study might be utilised to formulate a refutable hypothesis and verify them on a larger group of companies from different sectors of the economy. The main limitations of the paper are mostly related to the inherent approach therein

  12. Regression analysis for secondary response variable in a case-cohort study.

    Science.gov (United States)

    Pan, Yinghao; Cai, Jianwen; Kim, Sangmi; Zhou, Haibo

    2017-12-29

    Case-cohort study design has been widely used for its cost-effectiveness. In any real study, there are always other important outcomes of interest beside the failure time that the original case-cohort study is based on. How to utilize the available case-cohort data to study the relationship of a secondary outcome with the primary exposure obtained through the case-cohort study is not well studied. In this article, we propose a non-parametric estimated likelihood approach for analyzing a secondary outcome in a case-cohort study. The estimation is based on maximizing a semiparametric likelihood function that is built jointly on both time-to-failure outcome and the secondary outcome. The proposed estimator is shown to be consistent, efficient, and asymptotically normal. Finite sample performance is evaluated via simulation studies. Data from the Sister Study is analyzed to illustrate our method. © 2017, The International Biometric Society.

  13. The cleanroom case study in the Software Engineering Laboratory: Project description and early analysis

    Science.gov (United States)

    Green, Scott; Kouchakdjian, Ara; Basili, Victor; Weidow, David

    1990-01-01

    This case study analyzes the application of the cleanroom software development methodology to the development of production software at the NASA/Goddard Space Flight Center. The cleanroom methodology emphasizes human discipline in program verification to produce reliable software products that are right the first time. Preliminary analysis of the cleanroom case study shows that the method can be applied successfully in the FDD environment and may increase staff productivity and product quality. Compared to typical Software Engineering Laboratory (SEL) activities, there is evidence of lower failure rates, a more complete and consistent set of inline code documentation, a different distribution of phase effort activity, and a different growth profile in terms of lines of code developed. The major goals of the study were to: (1) assess the process used in the SEL cleanroom model with respect to team structure, team activities, and effort distribution; (2) analyze the products of the SEL cleanroom model and determine the impact on measures of interest, including reliability, productivity, overall life-cycle cost, and software quality; and (3) analyze the residual products in the application of the SEL cleanroom model, such as fault distribution, error characteristics, system growth, and computer usage.

  14. Contributions of Bottom-Up Energy Transitions in Germany: A Case Study Analysis

    Directory of Open Access Journals (Sweden)

    Ortzi Akizu

    2018-04-01

    Full Text Available Within the context of an energy transition towards achieving a renewable low-impact energy consumption system, this study analyses how bottom-up initiatives can contribute to state driven top-down efforts to achieve the sustainability related goals of (1 reducing total primary energy consumption; (2 reducing residential electricity and heat consumption; and (3 increasing generated renewable energy and even attaining self-sufficiency. After identifying the three most cited German bottom-up energy transition cases, the initiatives have been qualitatively and quantitatively analysed. The case study methodology has been used and each initiative has been examined in order to assess and compare these with the German national panorama. The novel results of the analysis demonstrate the remarkable effects of communal living, cooperative investment and participatory processes on the creation of a new sustainable energy system. The study supports the claim that bottom-up initiatives could also contribute to energy sustainability goals together within the state driven plans. Furthermore, the research proves that the analysed bottom-up transitions are not only environmentally and socially beneficial but they can also be economically feasible, at least in a small scale, such as the current German national top-down energy policy panorama.

  15. Analysis of facial expressions in patients with schziophrenia, in comparison with a healthy control - case study.

    Science.gov (United States)

    Dudek, Arkadiusz; Wilczyński, Krzysztof M; Krysta, Krzysztof; Pęszor, Damian; Martyniak, Ewa; Wojciechowska, Marzena; Krzystanek, Marek; Wojciechowski, Konrad; Janas-Kozik, Małgorzata

    2017-09-01

    Deficits in area of communication, crucial for maintaining proper social bonds, may have a prominent adverse impact on quality of life in patients with schizophrenia. Social exclusion, lack of employment and deterioration of family life, may be consequences of aggravated social competencies, caused by inability to properly exhibit and interpret facial expressions. Although this phenomenon is known since first clinical descriptions of schizophrenia, lack of proper methodology limited our knowledge in this area. Aim of our study was to compare facial expressivity of the patient with schizophrenia, and the healthy individual. 47-years old patient suffering from schizophrenia, and 36-years old healthy individual were invited to participate in our study. They underwent the examination in Human Facial Modelling Lab in Polish-Japanese Institute of Information Technology in Bytom (Silesia, Katowice). Both participants were presented with two video materials, first one contained different facial expressions, which they had to imitate. Second one a part of comedy show, during which spontaneous reactions were recorded. Acquisition of facial expressions was conducted with marker-based technology of modelling. Obtained data was analyzed using Microsoft Excel. An overall facial expression intensity, expressed as an average value of distances traveled by markers during shifts from neutral position was higher in case of a healthy participant during both part of the study. The difference was especially visible in case of an upper half of the face. Utilization of marker-based methods in analysis of human facial expressions seem to be reliable and remarkably accurate.

  16. 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.

  17. Cofiring of biofuels in coal fired boilers: Results of case study analysis

    Energy Technology Data Exchange (ETDEWEB)

    Tillman, D.A. [Ebasco Environmental, Sacramento, CA (United States); Hughes, E. [Electric Power Research Institute, Palo Alto, CA (United States); Gold, B.A. [TVA, Chattanooga, TN (United States)

    1993-12-31

    Ebasco Environmental and Reaction Engineering, under contract to EPRI, performed a case study analysis of cofiring biomass in coal-fired boilers of the Tennessee Valley Authority (TVA). The study was also sponsored by DOE. This analysis included evaluating wood fuel receiving, preparation, and combustion in pulverized coal (PC) boilers and cyclone furnaces and an assessment of converting wood into pyrolysis oil or low Btu gas for use in a new combined cycle combustion turbine (CCCT) installation. Cofiring wood in existing coal-fired boilers has the most immediate potential for increasing the utilization of biofuels in electricity generation. Cofiring biofuels with coal can potentially generate significant benefits for utilities including: (1) reducing emissions of SO{sub 2} and NO{sub x}; (2) reducing the net emissions of CO{sub 2}; (3) potentially reducing the fuel cost to the utility depending upon local conditions and considering biomass is potentially exempt from the proposed Btu tax and may get a 1.5 cent/kWh credit for energy generated by wood combustion; (4) supporting local industrial forest industry; and (5) providing a long term market for the development of a biofuel supply and delivery industry. Potential benefits are reviewed in the context of cofiring biofuel at a rate of 15% heat input to the boiler, and compares this cofiring strategy and others previously tested or developed by other utilities. Other issues discussed include: (1) wood fuel specifications as a function of firing method; (2) wood fuel receiving and preparation system requirements; (3) combustion system requirements for cofiring biofuels with coal; (4) combustion impacts of firing biofuels with coal; (5) system engineering issues; (6) the economics of cofiring biofuel with coal. The Allen, TN 330 MW(e) cyclone boiler and Kingston, TN 135 MW(e) Boiler {number_sign}1, a tangentially fired PC unit, case studies are then summarized in the paper, highlighting the cofiring opportunities.

  18. 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.

  19. Applying Critical Discourse Analysis in Health Policy Research: Case Studies in Regional, Organizational, and Global Health.

    Science.gov (United States)

    Evans-Agnew, Robin A; Johnson, Susan; Liu, Fuqin; Boutain, Doris M

    2016-08-01

    Critical discourse analysis (CDA) is a promising methodology for policy research in nursing. As a critical theoretical methodology, researchers use CDA to analyze social practices and language use in policies to examine whether such policies may promote or impede social transformation. Despite the widespread use of CDA in other disciplines such as education and sociology, nursing policy research employing CDA methodology is sparse. To advance CDA use in nursing science, it is important to outline the overall research strategies and describe the steps of CDA in policy research. This article describes, using exemplar case studies, how nursing and health policy researchers can employ CDA as a methodology. Three case studies are provided to discuss the application of CDA research methodologies in nursing policy research: (a) implementation of preconception care policies in the Zhejiang province of China, (b) formation and enactment of statewide asthma policy in Washington state of the United States, and (c) organizational implementation of employee antibullying policies in hospital systems in the Pacific Northwest of the United States. Each exemplar details how CDA guided the examination of policy within specific contexts and social practices. The variations of the CDA approaches in the three exemplars demonstrated the flexibilities and potentials for conducting policy research grounded in CDA. CDA provides novel insights for nurse researchers examining health policy formation, enactment, and implementation. © The Author(s) 2016.

  20. Supply chain analysis of e-tailing versus retailing operation - a case study

    Science.gov (United States)

    Kumar, Sameer; Tiffany, Maryellen; Vaidya, Salil

    2016-07-01

    The swift growth of e-commerce or e-tailing as a consumer retail channel has made it a serious competitor to traditional retail channels and is changing consumers' purchasing behaviour. The purpose of this case study, based on Target and Amazon.com, is to analyse the attributes of traditional retailing, e-tailing, and hybrid supply chain models to form conclusions about the feasibility of an idealised supply chain model for the future. An integrated and generalised modelling framework is used that incorporates Six Sigma - define, measure, analyse, improve, control methodology leveraging various tools, including process flow maps, cause and effect diagram, performance efficiency metrics, failure mode and effects analysis (FMEA), and Monte Carlo simulation. Based on this analysis and research, the conclusion is that the idealised supply chain of the future may evolve into a hybrid supply chain, which includes both e-tail and retail channels. The main recommendations from this study include assessing the risks of migrating to such a hybrid supply chain and to leverage the recommended actions provided in the hybrid FMEA. To facilitate more effective and mature processes, this study can guide researchers in exhaustive empirical evaluations of hybrid supply chains, gather experiences and lessons learned for practitioners.

  1. Conflicting Incentives Risk Analysis: A Case Study of the Normative Peer Review Process

    Directory of Open Access Journals (Sweden)

    Gaute Wangen

    2015-07-01

    Full Text Available This paper presents an approach to conduct risk assessments of complex incentive systems, using a case study of the normative Peer Review Process (PRP. This research centers on appliances and adaptations of the Conflicting Incentives Risk Analysis (CIRA. First as an approach to Root Cause Analysis of a known incident, and then for a full assessment of the incentives in the PRP together with possible risk treatments. CIRA uses an alternative notion of risk, where risk modeling is in terms of conflicting incentives between the risk owner and the stakeholders concerning the execution of actions. Compared to traditional risk assessment approaches, CIRA provides an insight into the underlying incentives behind a risk, and not just the technical vulnerability, likelihood and consequence. The main contributions of this work are an approach to obtain insight into incentives as root causes, and an approach to detecting and analyzing risks from incentives in the normative PRP. This paper also discusses risk treatments in terms of incentives to make the PRP more robust, together with a discussion of how to approach risk analysis of incentives.

  2. Case-study application of venture analysis: the integrated energy utility. Volume 2. Technical report

    Energy Technology Data Exchange (ETDEWEB)

    Fein, E; Gordon, T J; King, R; Kropp, F G; Shuchman, H L; Stover, J; Hausz, W; Meyer, C

    1978-11-01

    Application of venture analysis would, at a minimum, need to address issues involving careful definition of the product/service being considered; market needs that the product will satisfy; investment/manufacturing costs; minimum selling price needed to achieve desired ROI or other financial measure; market potential at relevant prices; potential for competitors to obsolete the product before investment is recovered; assessment of companies' resources and capabilities to supply the product. There is clearly no single method for performing every venture analysis, because the economic and structural environment associated with each industry varies widely. These and other factors produce differences in cost structure, marketing organizations, and nature of products which dictate that an appropriate method of venture analysis must be tailored to each industry. The initial chapter of the report presents some brief remarks concerning the important concepts that all venture analyses must consider and then describes in detail the method used for the venture analyzed in this report. The case study addresses IEUS for commercialization. The type of IEUS investigated supplies electricity and thermal energy; the thermal energy distributed in the form of high-temperature water, i.e., water from at least 90/sup 0/C upwards to 200/sup 0/C. (MCW)

  3. Predictive analysis of shaft station radon concentrations in underground uranium mine: A case study.

    Science.gov (United States)

    Zhao, Guoyan; Hong, Changshou; Li, Xiangyang; Lin, Chunping; Hu, Penghua

    2016-07-01

    This paper presented a method for predicting shaft station radon concentrations in a uranium mine of China through theoretical analysis, mathematical derivation and Monte-Carlo simulation. Based upon the queuing model for tramcars, the average waiting time of tramcars and average number of waiting tramcars were determined, which were further used in developing the predictive model for calculating shaft station radon concentrations. The results exhibit that the extent of variation of shaft station radon concentration in the case study mine is not significantly affected by the queuing process of tramcars, and is always within the allowable limit of 200 Bq m(-3). Thus, the empirical limit of 100,000 T annual ore-hoisting yields has no value in ensuring radiation safety for this mine. Moreover, the developed model has been validated and proved useful in assessing shaft station radon levels for any uranium mine with similar situations. Copyright © 2016 Elsevier Ltd. All rights reserved.

  4. Recovery and the role of humility: insights from a case study analysis.

    Science.gov (United States)

    Cleary, Michelle; Walter, Garry; Hungerford, Catherine L

    2014-02-01

    When the individuals comprising a profession are focused more on competition rather than service to others, and when holding a significant place on the world stage is held in higher esteem than meaningful collaboration with the disempowered, is it possible to be truly consumer-centred? This article considers the notion of humility in the context of recovery and the challenges to the effective implementation of recovery-oriented services that have been identified. Insights are drawn from a case study analysis of the implementation of recovery approaches to health care into a publicly-funded mental health service located in Australia. While challenges to the operationalization of recovery are complex, we argue that the professional quality of humility provides an important means by which genuine and meaningful collaboration can be achieved among health professionals, consumers, carers, and other stakeholders.

  5. Detection of manipulations on printed images to address crime scene analysis: A case study.

    Science.gov (United States)

    Amerini, Irene; Caldelli, Roberto; Del Bimbo, Alberto; Di Fuccia, Andrea; Rizzo, Anna Paola; Saravo, Luigi

    2015-06-01

    Photographic documents both in digital and in printed format plays a fundamental role in crime scene analysis. Photos are crucial to reconstruct what happened and also to freeze the fact scenario with all the different present objects and evidences. Consequently, it is immediate to comprehend the paramount importance of the assessment of the authenticity of such images, to avoid that a possible malicious counterfeiting leads to a wrong evaluation of the circumstance. In this paper, a case study in which some printed photos, brought as documental evidences of a familiar murder, had been fraudulently modified to bias the final judgement is presented. In particular, the usage of CADET image forensic tool, to verify printed photos integrity, is introduced and discussed. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  6. Tracer experiments and residence-time distributions in the analysis of industrial units: case studies

    International Nuclear Information System (INIS)

    Plasari, E.; Villermaux, J.; Thereska, J.; ); Leclerc, J. P.

    1999-01-01

    The use of radioactive tracers in the analysis of industrial units is illustrated by some typical cases concerning a SO 2 - oxidation industrial reactor, a superphosphate granulator, a chromium ore rod mill, a shaft furnace and a settling tank in a copper melting processes and a fluidized bed calciner. In addition, a commercially available software package is described and the use of this package in a complicated case concerning a ventilation system is demonstrated. (author)

  7. Design and construction strategies for reducing embodied impacts from buildings – Case study analysis

    DEFF Research Database (Denmark)

    Malmqvist, Tove; Nehasilova, Marie; Moncaster, Alice

    2018-01-01

    The dominance of operational energy and related greenhouse gas (GHG) emissions of most existing build- ings is decreasing in new construction, when primary fossil energy of building operation decreases as re- sult of the implementation of energy efficiency measures as well as a decarbonisation of......, importantly this multiple cross-case analysis has provided rigorous evidence of the considerable potential to reduce embodied impacts in the design and construction of new and refurbished buildings.......The dominance of operational energy and related greenhouse gas (GHG) emissions of most existing build- ings is decreasing in new construction, when primary fossil energy of building operation decreases as re- sult of the implementation of energy efficiency measures as well as a decarbonisation...... of national energy mixes. Stakeholders therefore have a growing interest in understanding the possibilities for reducing em- bodied impacts in buildings. In the IEA EBC project ‘Annex 57’ a broad call for case studies was launched with the aim to identify design strategies for reducing embodied energy and GHG...

  8. Statistical Analysis of Microarray Data with Replicated Spots: A Case Study with Synechococcus WH8102

    Directory of Open Access Journals (Sweden)

    E. V. Thomas

    2009-01-01

    Full Text Available Until recently microarray experiments often involved relatively few arrays with only a single representation of each gene on each array. A complete genome microarray with multiple spots per gene (spread out spatially across the array was developed in order to compare the gene expression of a marine cyanobacterium and a knockout mutant strain in a defined artificial seawater medium. Statistical methods were developed for analysis in the special situation of this case study where there is gene replication within an array and where relatively few arrays are used, which can be the case with current array technology. Due in part to the replication within an array, it was possible to detect very small changes in the levels of expression between the wild type and mutant strains. One interesting biological outcome of this experiment is the indication of the extent to which the phosphorus regulatory system of this cyanobacterium affects the expression of multiple genes beyond those strictly involved in phosphorus acquisition.

  9. Retrospective analysis of jaw biopsies in young adults. A study of 1599 cases in Southern Brazil

    Science.gov (United States)

    Alves, Alessandro; Correa, Marcos; Etges, Adriana; Vasconcelos, Ana-Carolina; Gomes, Ana-Paula; Tarquinio, Sandra

    2017-01-01

    Background To evaluate the prevalence and the characteristics of jaw lesions diagnosed in young adults aged 20 to 30 years in a southern Brazil reference center, over a period of 25 years. And to analyze the concordance between clinical and histological diagnosis. Material and Methods In this cross-sectional retrospective study, the biopsies files from this center were retrieved and data regarding sex, age, bone localization, clinical and histological diagnosis were collected. The histological diagnosis were grouped into the categories Cystic lesions of odontogenic origin, Periapical inflammation, Odontogenic tumors, Bone diseases, Health tissue and Nonspecific diagnostic. Absolute and relative frequencies were estimated with descriptive analysis. The agreement between clinical and histological diagnosis was measured through Kappa statistic. Results A total of 18,181 histopathological analysis were performed during the period of the study, registering 1,599 jaw lesions in young adults. The average age of individuals was 24,59 years (SD 3,1). Nine hundred ninety-one (62%) lesions were found in females and 608 (38%) in males. More than half of pathologies were cystic lesions of odontogenic origin (822/51.4%), followed by periapical inflammation (282/17.6%). Regarding the site of lesions, more than half occurred in posterior mandible (877/54.8%), followed by posterior maxilla (339/21.2%). The most frequent entities were periapical cyst, chronic periapical granuloma, dental follicle and paradental cyst, corresponding to a total of 1,202 (75.2%) evaluated cases. In relation to the analysis of concordance between clinical and histological diagnosis the general Kappa index was 0.5, which is considered moderate. Finally, the findings confirm data from literature about the most frequent jaw pathologies in young adults and serve as aid for preventive measures of some entities. Additionally, they can improve the formulation of differential diagnosis and the patient management

  10. Sleep disturbances in fibromyalgia: A meta-analysis of case-control studies.

    Science.gov (United States)

    Wu, Yu-Lin; Chang, Ling-Yin; Lee, Hsin-Chien; Fang, Su-Chen; Tsai, Pei-Shan

    2017-05-01

    Sleep disturbances are common in fibromyalgia, but the features of sleep disturbances are not well understood. We performed a systematic review and meta-analysis of case-control studies to compare the sleep outcomes of individuals with fibromyalgia and healthy controls. We systematically searched eight databases (PubMed, Ovid MEDLINE, Embase, CINAHL, PsycINFO, Web of Science, Airiti Library and Wanfang Data) for articles published before April 2016. Twenty-five case-controlled studies and a total of 2086 participants were included in the meta-analysis. Sleep was assessed using polysomnography and the Pittsburgh Sleep Quality Index. When sleep was assessed using polysomnography (19 studies), significant differences were observed in wake time after sleep onset (g=0.81, 95% confidence interval [CI] 0.21-1.41), total sleep time (g=-0.78, 95% CI=-1.34 to -0.15), sleep efficiency (g=-0.78, 95% CI=-1.23 to -0.32), percentage of stage 1 sleep (g=0.55, 95% CI=0.15-0.95), and percentage of slow-wave sleep (g=-0.66, 95% CI=-1.21 to -0.12) between participants with fibromyalgia and healthy controls. When sleep was assessed using the Pittsburgh Sleep Quality Index (7 studies), significant differences were observed in global scores (g=2.19, 95% CI 1.58-2.79), sleep onset latency (g=1.75, 95% CI 0.80-2.70), and sleep efficiency (g=-1.08, 95% CI -1.65 to -0.51) between participants with fibromyalgia and healthy controls. Individuals with fibromyalgia experience lower sleep quality and sleep efficiency; longer wake time after sleep onset, short sleep duration, and light sleep when objectively assessed and more difficulty in initiating sleep when subjectively assessed. Sleep difficulties in fibromyalgia appear to be more when reported subjectively than when assessed objectively. This study received no funding from any source. All authors declare that they have no conflict of interest. This article does not contain any studies with human participants performed by any of the authors

  11. Network Resilience Analysis: Review Of Concepts And A Country-Level. Case Study

    Directory of Open Access Journals (Sweden)

    Mariusz Kamola

    2014-01-01

    Full Text Available This paper presents the rationale behind performing an analysis of Internet resilience in the sense of maintaining a connection of autonomous systems in the presence of failures or attacks — on a level of a single country. Next, the graph of a network is constructed that represents interconnections between autonomous systems. The connectivity of the graph is examined for cases of link or node failure. Resilience metrics are proposed, focusing on a single autonomous system or on overall network reliability. The process of geographic location of networking infrastructure is presented, leading to an analysis of network resilience in the case of a joint failure of neighboring autonomous systems.

  12. Interpreting sources of variation in clinical gait analysis: A case study.

    Science.gov (United States)

    King, Stephanie L; Barton, Gabor J; Ranganath, Lakshminarayan R

    2017-02-01

    To illustrate and discuss sources of gait deviations (experimental, genuine and intentional) during a gait analysis and how these deviations inform clinical decision making. A case study of a 24-year old male diagnosed with Alkaptonuria undergoing a routine gait analysis. A 3D motion capture with the Helen-Hayes marker set was used to quantify lower-limb joint kinematics during barefoot walking along a 10m walkway at a self-selected pace. Additional 2D video data were recorded in the sagittal and frontal plane. The patient reported no aches or pains in any joint and described his lifestyle as active. Temporal-spatial parameters were within normal ranges for his age and sex. Three sources of gait deviations were identified; the posteriorly rotated pelvis was due to an experimental error and marker misplacement, the increased rotation of the pelvis in the horizontal plane was genuine and observed in both 3D gait curves and in 2D video analysis, finally the inconsistency in knee flexion/extension combined with a seemingly innocuous interest in the consequences of abnormal gait suggested an intentional gait deviation. Gait analysis is an important analytical tool in the management of a variety of conditions that negatively impact on movement. Experienced gait analysts have the ability to recognise genuine gait adaptations that forms part of the decision-making process for that patient. However, their role also necessitates the ability to identify and correct for experimental errors and critically evaluate when a deviation may not be genuine. Copyright © 2016 Elsevier B.V. All rights reserved.

  13. Human Rights Education in Social Studies in the Netherlands: A Case Study Textbook Analysis

    Science.gov (United States)

    de Kort, Frauke

    2017-01-01

    Citizenship education is one of the main aims of the mandated subject of social studies in secondary schools in the Netherlands. Moreover, the learning outcomes of social studies refer to constitutional rights. Internationally, citizenship education and human rights education are considered to be mutually reinforcing. One may, thus, expect that…

  14. Allium vegetable intake and gastric cancer: a case-control study and meta-analysis.

    Science.gov (United States)

    Turati, Federica; Pelucchi, Claudio; Guercio, Valentina; La Vecchia, Carlo; Galeone, Carlotta

    2015-01-01

    To provide new epidemiological data and summarize evidence on the association between allium vegetable intake and gastric cancer risk. Data were from an Italian case-control study including 230 cases and 547 controls. Odds ratios were derived using multiple logistic regression. We combined results from all published studies using random-effect models. In our case-control study, the odds ratios were 0.59 (95% confidence interval, CI, 0.25-1.41) for ≥2 portions of onion per week, 0.69 (95% CI, 0.41-1.15) for high garlic intake, and 0.70 (95% CI, 0.39-1.28) for frequent use of both onion and garlic. Besides our study, 22 case-control and four cohort studies were included in the meta-analyses (>10 000 cases). The pooled relative risks for the highest versus lowest intake category were 0.78 (95% CI, 0.67-0.91) for allium vegetables (ten case-control and four cohort studies), 0.60 (95% CI, 0.47-0.76) for garlic (12 case-control studies), and 0.55 (95% CI, 0.41-0.73) for onion (13 case-control studies). The pooled relative risk for high allium vegetable intake from the four cohorts was 1.02 (95% CI, 0.88-1.18). High allium vegetable consumption is likely to reduce gastric cancer risk. This evidence is derived mainly from case-control studies. Further data from large cohorts are desirable for conclusive confirmation. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. Managing Returnable Containers Logistics - A Case Study Part I - Physical and Information Flow Analysis

    Directory of Open Access Journals (Sweden)

    Reza A. Maleki

    2011-05-01

    Full Text Available This case study paper is the result of a project conducted on behalf of a company, hereon referred to as Midwest Assembly and Manufacturing or MAAN. The company's operations include component manufacturing, painting, and assembling products. The company also purchases a relatively large percentage of components and major assemblies that are needed to support final assembly operations. MAAN uses its own returnable containers to transport purchased parts from suppliers. Due to poor tracking of the containers, the company has been experiencing lost containers and occasional production disruptions at its facility well as at the supplier sites. The objective of this project was to develop a proposal to enable MAAN to more effectively track and manage its returnable containers. The research activities in support of this project included the analysis and documentation of both the physical flow and the information flow associated with the containers as well as some of the technologies that can help with automatic identification and tracking of containers. The focal point of this paper is on a macro?level approach for the analysis of container and information flow within the logistics chain. A companion paper deals with several of the automatic identification technologies that have the potential to improve the management of MAAN's returnable containers.

  16. Business models in urban farming: A comparative analysis of case studies from Spain, Italy and Germany

    Directory of Open Access Journals (Sweden)

    Pölling Bernd

    2017-09-01

    Full Text Available The “Urban Agriculture Europe” EU COST-Action (2012–2016 has shown that the complexity of urban agriculture (UA is hardly compressible into classic business management models and has proposed new management models, such as the Business Model Canvas (BMC. Business models of UA have to be different from rural ones. In particular, factors such as differentiation and diversification, but also low cost-oriented specialisation, are characteristic and necessary business models for UA to stay profitable in the long term under challenging city conditions. This paper aims to highlight how farm enterprises have to adjust to urban conditions by stepping into appropriate business models aiming to stay competitive and profitable, and how the BMC is useful to analyse their organisation and performance, both economically and socially. The paper offers an inter-regional analysis of UA enterprises located in Spain, Italy, and Germany, which are further subdivided into: local food, leisure, educational, social, therapeutic, agri-environmental, cultural heritage and experimental farms. The analysis demonstrates that UA is differentially adjusted to specific urban conditions and that the BMC is useful for analysing urban farming. Heterogeneous local food farms and the integration of local and organic food production in social farming business models are most frequent in our case studies.

  17. Analysis of Case-Control Association Studies: SNPs, Imputation and Haplotypes

    KAUST Repository

    Chatterjee, Nilanjan

    2009-11-01

    Although prospective logistic regression is the standard method of analysis for case-control data, it has been recently noted that in genetic epidemiologic studies one can use the "retrospective" likelihood to gain major power by incorporating various population genetics model assumptions such as Hardy-Weinberg-Equilibrium (HWE), gene-gene and gene-environment independence. In this article we review these modern methods and contrast them with the more classical approaches through two types of applications (i) association tests for typed and untyped single nucleotide polymorphisms (SNPs) and (ii) estimation of haplotype effects and haplotype-environment interactions in the presence of haplotype-phase ambiguity. We provide novel insights to existing methods by construction of various score-tests and pseudo-likelihoods. In addition, we describe a novel two-stage method for analysis of untyped SNPs that can use any flexible external algorithm for genotype imputation followed by a powerful association test based on the retrospective likelihood. We illustrate applications of the methods using simulated and real data. © Institute of Mathematical Statistics, 2009.

  18. Electrolyzer Performance Analysis of an Integrated Hydrogen Power System for Greenhouse Heating. A Case Study

    Directory of Open Access Journals (Sweden)

    Simone Pascuzzi

    2016-07-01

    Full Text Available A greenhouse containing an integrated system of photovoltaic panels, a water electrolyzer, fuel cells and a geothermal heat pump was set up to investigate suitable solutions for a power system based on solar energy and hydrogen, feeding a self-sufficient, geothermal-heated greenhouse. The electricity produced by the photovoltaic source supplies the electrolyzer; the manufactured hydrogen gas is held in a pressure tank. In these systems, the electrolyzer is a crucial component; the technical challenge is to make it work regularly despite the irregularity of the solar source. The focus of this paper is to study the performance and the real energy efficiency of the electrolyzer, analyzing its operational data collected under different operating conditions affected by the changeable solar radiant energy characterizing the site where the experimental plant was located. The analysis of the measured values allowed evaluation of its suitability for the agricultural requirements such as greenhouse heating. On the strength of the obtained result, a new layout of the battery bank has been designed and exemplified to improve the performance of the electrolyzer. The evaluations resulting from this case study may have a genuine value, therefore assisting in further studies to better understand these devices and their associated technologies.

  19. Complex young lives: a collective qualitative case study analysis of young fatherhood and breastfeeding.

    Science.gov (United States)

    Ayton, Jennifer; Hansen, Emily

    2016-01-01

    Of all births in Australia, 10 % are to young fathers aged less than 24 years. How young fathers experience any breastfeeding and how this is shaped by their social context is poorly understood. Our aim is to increase understanding of the lived experience of young fathers (aged less than 24 years) and to explore the way they speak about breastfeeding in the context of their lives and parenting. This collective case study analysis uses qualitative data from interviews and focus groups with young fathers (aged less than 24 years) and community support staff. The research was undertaken in Tasmania, Australia, March to December 2013. Young fathers in our study had complex social and emotional circumstances that meant breastfeeding was not a high priority despite them valuing the health benefits of breastfeeding for their babies. If supported by peers and their community they appear to have a more positive parenting experience. Breastfeeding although understood by the young fathers in our study as healthy and desirable is not a priority in their lives. Learning to be a parent and support their partners to breastfeed may be more effectively gained through mentoring and father-to-father localized community based support services.

  20. Identifying sustainability issues using participatory SWOT analysis - A case study of egg production in the Netherlands

    NARCIS (Netherlands)

    Mollenhorst, H.; Boer, de I.J.M.

    2004-01-01

    The aim of this paper was to demonstrate how participatory strengths, weaknesses, opportunities and threats (SWOT) analysis can be used to identify relevant economic, ecological and societal (EES) issues for the assessment of sustainable development. This is illustrated by the case of egg production

  1. The Australian 'grey nomad' and aged care nurse practitioner models of practice: a case study analysis.

    Science.gov (United States)

    Hungerford, Catherine; Prosser, Brenton; Davey, Rachel; Clark, Shannon

    2016-01-01

    The Nurse Practitioner - Aged Care Models of Practice Initiative supported the roll-out of a range of nurse practitioner (NP) models of practice, across Australia. One of these models was a community-based clinic-located practice, situated in a remote tourist destination where there is no resident general practitioner. Services were delivered by a NP to the local population as well as the many seasonal tourists passing through the region. These seasonal tourists included a growing number of older people, many of whom had chronic health conditions such as hypertension, diabetes and cardiac disease. A case study approach was taken to test and develop connections between the theory of nursing models and the practice of the NP. This approach enabled the development of a detailed explanation of the community-based, clinic-located NP model, including the model's associated enablers and challenges. The case study approach also supported further theoretical development of nursing models more generally. Enablers of the NP model were the sponsoring not-for-profit organisation, which provided pre-existing structures for clinical governance and general management, as well as funding; and the collaborative agreements negotiated at a systems level between the NP, other health professionals, and a variety of service providers. Challenges to the model included the organisation's limited capacity to back-fill the NP for leave and professional development entitlements obtaining recurrent funding to sustain the model. Also identified was the need for the organisation to more clearly explain the NP role to consumers of the services being delivered. Theoretically, analysis led to the inclusion of an additional component of the nursing model: influence of context. This component is important because it highlights the way in which nursing models of practice are affected by local conditions. The community-based, clinic-located NP model of practice described in this article provides a

  2. 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.

  3. Failure rate modeling using fault tree analysis and Bayesian network: DEMO pulsed operation turbine study case

    International Nuclear Information System (INIS)

    Dongiovanni, Danilo Nicola; Iesmantas, Tomas

    2016-01-01

    Highlights: • RAMI (Reliability, Availability, Maintainability and Inspectability) assessment of secondary heat transfer loop for a DEMO nuclear fusion plant. • Definition of a fault tree for a nuclear steam turbine operated in pulsed mode. • Turbine failure rate models update by mean of a Bayesian network reflecting the fault tree analysis in the considered scenario. • Sensitivity analysis on system availability performance. - Abstract: Availability will play an important role in the Demonstration Power Plant (DEMO) success from an economic and safety perspective. Availability performance is commonly assessed by Reliability Availability Maintainability Inspectability (RAMI) analysis, strongly relying on the accurate definition of system components failure modes (FM) and failure rates (FR). Little component experience is available in fusion application, therefore requiring the adaptation of literature FR to fusion plant operating conditions, which may differ in several aspects. As a possible solution to this problem, a new methodology to extrapolate/estimate components failure rate under different operating conditions is presented. The DEMO Balance of Plant nuclear steam turbine component operated in pulse mode is considered as study case. The methodology moves from the definition of a fault tree taking into account failure modes possibly enhanced by pulsed operation. The fault tree is then translated into a Bayesian network. A statistical model for the turbine system failure rate in terms of subcomponents’ FR is hence obtained, allowing for sensitivity analyses on the structured mixture of literature and unknown FR data for which plausible value intervals are investigated to assess their impact on the whole turbine system FR. Finally, the impact of resulting turbine system FR on plant availability is assessed exploiting a Reliability Block Diagram (RBD) model for a typical secondary cooling system implementing a Rankine cycle. Mean inherent availability

  4. 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

  5. Failure rate modeling using fault tree analysis and Bayesian network: DEMO pulsed operation turbine study case

    Energy Technology Data Exchange (ETDEWEB)

    Dongiovanni, Danilo Nicola, E-mail: danilo.dongiovanni@enea.it [ENEA, Nuclear Fusion and Safety Technologies Department, via Enrico Fermi 45, Frascati 00040 (Italy); Iesmantas, Tomas [LEI, Breslaujos str. 3 Kaunas (Lithuania)

    2016-11-01

    Highlights: • RAMI (Reliability, Availability, Maintainability and Inspectability) assessment of secondary heat transfer loop for a DEMO nuclear fusion plant. • Definition of a fault tree for a nuclear steam turbine operated in pulsed mode. • Turbine failure rate models update by mean of a Bayesian network reflecting the fault tree analysis in the considered scenario. • Sensitivity analysis on system availability performance. - Abstract: Availability will play an important role in the Demonstration Power Plant (DEMO) success from an economic and safety perspective. Availability performance is commonly assessed by Reliability Availability Maintainability Inspectability (RAMI) analysis, strongly relying on the accurate definition of system components failure modes (FM) and failure rates (FR). Little component experience is available in fusion application, therefore requiring the adaptation of literature FR to fusion plant operating conditions, which may differ in several aspects. As a possible solution to this problem, a new methodology to extrapolate/estimate components failure rate under different operating conditions is presented. The DEMO Balance of Plant nuclear steam turbine component operated in pulse mode is considered as study case. The methodology moves from the definition of a fault tree taking into account failure modes possibly enhanced by pulsed operation. The fault tree is then translated into a Bayesian network. A statistical model for the turbine system failure rate in terms of subcomponents’ FR is hence obtained, allowing for sensitivity analyses on the structured mixture of literature and unknown FR data for which plausible value intervals are investigated to assess their impact on the whole turbine system FR. Finally, the impact of resulting turbine system FR on plant availability is assessed exploiting a Reliability Block Diagram (RBD) model for a typical secondary cooling system implementing a Rankine cycle. Mean inherent availability

  6. Development of a risk analysis model. Appendix F. District heating and cooling system case study. Final report

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-10-01

    The risk analysis reported in this appendix was concerned with a business venture in the area of district energy systems using thermal energy cogenerated at existing electric power plants. After an introductory section, Section 2, Institutional Issues, discusses investment decisions and regulatory constraints and issues; Section 3 reviews public utility company objectives and investment analysis approach; Section 4 reviews the case study of district heating and cooling systems (DHCS) in Washington, DC; Section 5 results of the Minneapolis/St. Paul case DHCS study; Section 6 summarizes the desired risk-analysis methodology for evaluating regulated utility investment decisions; and Section 7 presents overall conclusions. (MCW)

  7. Natural Learning Case Study Archives

    Science.gov (United States)

    Lawler, Robert W.

    2015-01-01

    Natural Learning Case Study Archives (NLCSA) is a research facility for those interested in using case study analysis to deepen their understanding of common sense knowledge and natural learning (how the mind interacts with everyday experiences to develop common sense knowledge). The database comprises three case study corpora based on experiences…

  8. Analysis of Discourse Structure of Cases Verdict in The District Court (A Study of Legal Language

    Directory of Open Access Journals (Sweden)

    Usman Pakaya

    2017-11-01

    Full Text Available The title of this article is the discourse structure of cases verdict in the district court (a study of legal language. This article discusses several elements that compose verdict in a criminal case, such as heading, the identity of the defendant, the attorney’s indictment, witnesses’ testimony, the testimony of the accused, and the verdict statements. This study employed the qualitative method to find out the scientific facts. This article is aimed at proving that discourse structure can be used as a framework in unraveling a case verdict.

  9. VISUALIZATION AND ANALYSIS OF LIGHT POLLUTION: A CASE STUDY IN HONG KONG

    OpenAIRE

    B. Wu; H. Wong

    2012-01-01

    The effects of light pollution problems in metropolitan areas are investigated in this study. Areas of Hong Kong are used as the source of three typical study cases. One case represents the regional scale, a second represents the district scale, and a third represents the street scale. Two light pollution parameters, Night Sky Brightness (NSB) and Street Light Level (SLL), are the focus of the analyses. Light pollution visualization approaches in relation to the different scales incl...

  10. Analysis of the Risk Factors for Aerobic Vaginitis: A Case-Control Study.

    Science.gov (United States)

    Geng, Nv; Wu, Wenjuan; Fan, Aiping; Han, Cha; Wang, Chen; Wang, Yingmei; Xue, Fengxia

    2015-06-09

    Aerobic vaginitis (AV) is a newly defined clinical entity which may interfere with women's reproductive health and have negative effects on pregnancy. This study was to identify the risk factors for AV. Participants in this case-control study included healthy women and women with AV. All participants completed a standardized questionnaire covering sociodemographic factors, sexual behaviors, personal hygiene habits and health behaviors. Uni- and multivariate logistic regression analyses were used for statistical evaluation. A total of 290 women of reproductive age were enrolled. In the multivariate analysis, unmarried status (odds ratio [OR] 2.606, 95% confidence interval [CI] 1.257-5.402), use of an intrauterine device (OR 4.989, 95% CI 1.922-12.952), long-term use of antibiotics (OR 11.176, 95% CI 1.363-91.666) and frequent vaginal douching (OR 4.689, 95% CI 1.363-16.135) were independent risk factors for AV. On the contrary, consistent condom use (OR 0.546, 95% CI 0.301-0.991) and college-level education or above (OR 0.255, 95% CI 0.131-0.497) were independent protective factors. Measures that may be considered to prevent AV include enhancing education to improve women's knowledge related to reproductive health, especially unmarried women, encouraging them to consistently use condoms as a contraceptive method, to avoid long-term use of antibiotics and to stop frequent vaginal douching. © 2015 S. Karger AG, Basel.

  11. Analysis Thermal Comfort Condition in Complex Residential Building, Case Study: Chiangmai, Thailand

    Science.gov (United States)

    Juangjandee, Warangkana

    2017-10-01

    Due to the increasing need for complex residential buildings, it appears that people migrate into the high-density urban areas because the infrastructural facilities can be easily found in the modern metropolitan areas. Such rapid growth of urbanization creates congested residential buildings obstructing solar radiation and wind flow, whereas most urban residents spend 80-90% of their time indoor. Furthermore, the buildings were mostly built with average materials and construction detail. This causes high humidity condition for tenants that could promote mould growth. This study aims to analyse thermal comfort condition in complex residential building, Thailand for finding the passive solution to improve indoor air quality and respond to local conditions. The research methodology will be in two folds: 1) surveying on case study 2) analysis for finding the passive solution of reducing humidity indoor air The result of the survey indicated that the building need to find passive solution for solving humidity problem, that can be divided into two ways which raising ventilation and indoor temperature including increasing wind-flow ventilation and adjusting thermal temperature, for example; improving building design and stack driven ventilation. For raising indoor temperature or increasing mean radiant temperature, daylight can be passive solution for complex residential design for reducing humidity and enhance illumination indoor space simultaneous.

  12. An investigation of Forex market efficiency based on detrended fluctuation analysis: A case study for Iran

    Science.gov (United States)

    Abounoori, Esmaiel; Shahrazi, Mahdi; Rasekhi, Saeed

    2012-06-01

    The efficient market hypothesis (EMH) states that asset prices fully reflect all available information. As a result, speculators cannot predict the future behavior of asset prices and earn excess profits at least after adjusting for risk. Although initial tests of the EMH were performed on stock market data, the EMH was soon applied to other markets including foreign exchange (FX). This study uses the detrended fluctuation analysis (DFA) technique to test 01:12:2005-18:04:2010 Iranian Rial/US Dollar exchange rate time series data to see if it can be explained by the weak form of the EMH. Moreover, to determine changes in the degree of inefficiency over time, the whole period has been divided into four subperiods. The study shows that the Iranian Forex market (the Rial/Dollar case) is weak-form inefficient over the whole period and in each of the subperiods. However, the degree of inefficiency is not constant over time. The findings suggest that profitable risk-adjusted trades could be made using past data.

  13. Value of information analysis for groundwater quality monitoring network design Case study: Eocene Aquifer, Palestine

    Science.gov (United States)

    Khader, A.; McKee, M.

    2010-12-01

    Value of information (VOI) analysis evaluates the benefit of collecting additional information to reduce or eliminate uncertainty in a specific decision-making context. It makes explicit any expected potential losses from errors in decision making due to uncertainty and identifies the “best” information collection strategy as one that leads to the greatest expected net benefit to the decision-maker. This study investigates the willingness to pay for groundwater quality monitoring in the Eocene Aquifer, Palestine, which is an unconfined aquifer located in the northern part of the West Bank. The aquifer is being used by 128,000 Palestinians to fulfill domestic and agricultural demands. The study takes into account the consequences of pollution and the options the decision maker might face. Since nitrate is the major pollutant in the aquifer, the consequences of nitrate pollution were analyzed, which mainly consists of the possibility of methemoglobinemia (blue baby syndrome). In this case, the value of monitoring was compared to the costs of treating for methemoglobinemia or the costs of other options like water treatment, using bottled water or importing water from outside the aquifer. And finally, an optimal monitoring network that takes into account the uncertainties in recharge (climate), aquifer properties (hydraulic conductivity), pollutant chemical reaction (decay factor), and the value of monitoring is designed by utilizing a sparse Bayesian modeling algorithm called a relevance vector machine.

  14. Use of multi-criteria decision analysis in public bidding processes: a case study

    Directory of Open Access Journals (Sweden)

    André Andrade Longaray

    2014-02-01

    Full Text Available Institutions of Higher Education in Brazil (IFES play an important role in the country’s social and scientific development. Focused mainly on teaching, research and extension activities, the IFES are backed by support foundations aimed to the management of financial, human and material resources. Characterized as public bodies, the support foundations are governed by Law no 8.666/93 in what concerns the procurement of goods and services. Therefore, the present study is aimed to develop a model to assist the managers of such foundations in the selection of suppliers to participate in bidding processes that use invitation for bids. Therefore, we conducted a case study in one of the 55 foundations that support Brazilian federal universities. The intervention tool used was the Analytic Hierarchy Process (AHP. Firstly, we established the hierarchy of criteria for problem-solving. Then, a paired comparison was made between criteria for the same level. Subsequently, the consistency analysis of comparison matrices was verified. Finally, the relative priorities of each criterion were obtained and the objective function of the model was constructed. The model was tested through the assessment of the performance of three potential suppliers of IT equipment, and the result was legitimized by decision makers who found the instrument a valid tool to aid in making decisions on supplier selection for the foundation.

  15. THE ANALYSIS OF THE INTENTIONS TO CONTINUE THE STUDIES IN THE HIGHER EDUCATION. CASE STUDY

    Directory of Open Access Journals (Sweden)

    Daniela CREŢU

    2015-06-01

    Full Text Available The paper presents the results of a survey conducted in the high schools of Calarasi county. The purpose is to estimate the education option of the future graduates. The survey was conducted on a stratified sample, of 630 future graduates of 7 high schools in Călărasi county. In order to inform closer to reality, the design of the questionnaire sought to identify options for the University of Agronomic Sciences and Veterinary Medicine Bucharest, following the evaluation by the pupils, of the group of university education offers. Almost all, of 96.7 % of pupils expressed their intention to continue their studies in the higher education, most of them continuing the tradition of the past years, to direct their options to the economic education, respectively 31%. The school population was divided into five layers, depending on the number of graduates registered in the University of Agronomic Sciences and Veterinary Medicine Bucharest, in the academic year 2014/2015. The demand for the University of Agronomic Sciences and Veterinary Medicine Bucharest represents 27% of the demand for the public education, most of them coming from the high schools with agricultural and economic profile. In order to improve the promotion strategy, along with the options estimation, the investigation aimed also to identify the main reasons for the choice made and to highlight the main sources of information. Analyzing the distribution of reasons, we found out that the first reasons are: good training, existing specializations, internships abroad, providing accommodation.

  16. Thai Perspectives on the Internationalization of Higher Education in Thailand: A Mixed Methods Analysis and Three Mini-Case Studies

    Science.gov (United States)

    McBride, Karen Anne

    2012-01-01

    This study is a sequential mixed methods study that also includes three mini-case studies for the purpose of portraying contemporary Thai views on the internationalization of higher education in Thailand and reflections on its status as an international education hub in the Southeast Asian region. An inductive analysis technique is used whereby…

  17. 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.)

  18. Extending 'Deep Blue' aerosol retrieval coverage to cases of absorbing aerosols above clouds: sensitivity analysis and first case studies

    Energy Technology Data Exchange (ETDEWEB)

    Sayer, Andrew M.; Hsu, C.; Bettenhausen, Corey; Lee, Jae N.; Redemann, Jens; Schmid, Beat; Shinozuka, Yohei

    2016-05-07

    Cases of absorbing aerosols above clouds (AAC), such as smoke or mineral dust, are omitted from most routinely-processed space-based aerosol optical depth (AOD) data products, including those from the Moderate Resolution Imaging Spectroradiometer (MODIS). This study presents a sensitivity analysis and preliminary algorithm to retrieve above-cloud AOD and liquid cloud optical depth (COD) for AAC cases from MODIS or similar

  19. Integrated marketing communication in tourism – an analysis. Case study: Muntenia and Oltenia

    Directory of Open Access Journals (Sweden)

    Aurelia-Felicia STĂNCIOIU

    2013-06-01

    Full Text Available The multitude of factors interfering in the process of image formation and the way in which they act in a unique combination, similar to a genetic code for a consumer, influences the image study of a tourism destination in the direction of becoming a complex process. In the marketing activity of each destination, the analysis of the importance of destination’s resources represents an essential step, however, as the multifaceted tourism product presents (in combination with, as well as through other policies – price, distribution etc. a strong diversification, the distinction between the real, objective situation of the destination’s resources and the lack of their communication, on the one hand, and the distinction between the real situation and the way in which the resources are “presented” (in the direction of maximising or minimising them, on the other hand, can constitute a barrier in the path of formulating and/or fulfilling the marketing objectives and, respectively, the communication ones. In this context, in the authors’ opinion, in aid of a positioning strategy as accurate as possible – starting point in the integrated marketing communication strategy, a radiography of the tourism resources, their place and their reflection, in relation to those communicated through the different promotional instruments (examples, books, guides, online tourism agencies, social media etc., is permanently imposed, all the more in the case of a macrodestination like Romania, and should be carefully monitorised.

  20. 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.

  1. Ecotoxicity tests in the environmental analysis of wastewater treatment plants: case study in Portugal.

    Science.gov (United States)

    Mendonça, Elsa; Picado, Ana; Paixão, Susana Maria; Silva, Luís; Cunha, Maria Ana; Leitão, Sara; Moura, Isabel; Cortez, Cristina; Brito, Fátima

    2009-04-30

    A global evaluation of wastewaters should include ecotoxicological tests to complement the chemical characterization, with advantages especially in the case of complex wastewaters. A European project developed in Trancão River Basin (Portugal), integrated the ecotoxicological and physicochemical studies of wastewater samples from two municipal sewer networks and respective wastewater treatment plants. Wastewater samples were analysed for physicochemical parameters, ecotoxicological acute and chronic tests performed and the potential for endocrine disruption evaluated. Organic load parameters and total suspended solids showed significant correlations with Microtox and ThamnoToxKit test results. Data analysis showed that treated treatment plant effluent samples are associated with less organic contamination and less toxicity in ThamnoToxKit test. Chronic toxicity test and endocrine disruption assay of treatment plant effluent samples indicated that, in a long term, potential population effects could arise in the receiving waters. A test battery to monitor this type of wastewaters is proposed, including tests with a bacterium, an alga and a crustacean. In a screening phase the most sensitive test, Microtox, can be used. The use of an ecotoxicological approach can have added value to hazard and risk assessment of discharges to the receiving waters and can contribute to the environmental management of the treatment plant.

  2. 'Lessons learned': A comparative case study analysis of an emergency department response to two burns disasters.

    Science.gov (United States)

    Little, Mark; Cooper, Jim; Gope, Monica; Hahn, Kelly A; Kibar, Cem; McCoubrie, David; Ng, Conrad; Robinson, Annie; Soderstrom, Jessamine; Leclercq, Muriel

    2012-08-01

    The Royal Perth Hospital (RPH; Perth, Australia) has been the receiving facility for burns patients in two separate disasters. In 2002, RPH received 28 severely injured burns patients after the Bali bombing, and in 2009 RPH received 23 significantly burnt patients as a result of an explosion on board a foreign vessel in the remote Ashmore Reef Islands (840 km west of Darwin). The aim of this paper is to identify the interventions developed following the Bali bombing in 2002 and review their effectiveness of their implementation in the subsequent burns disaster. A comparative case study analysis using a standardised approach was used to describe context with debrief reports and ED photographs from both disasters used for evaluation. The implementation of regular ED disaster response planning and training, early Code Brown notification of the entire hospital with regular updates, early clearing of inpatient beds, use of Short Message Service to communicate regularly with ED staff, control of the public and media access to the ED, visual identification of staff within the ED, early panendoscopy to ascertain intubation needs, and senior clinical decision makers in all areas of the ED were all acknowledged as effective based on the debrief reports. There was a reduction in ED length of stay (150 to 55 min) and no deaths occurred; however, quantitative analysis can only be suggestive rather than a direct measure of improvement given the likelihood of other system changes. There were a number of lessons observed from the Bali experience in 2002 that have led to improvements in practice and lessons learned. © 2012 The Authors. EMA © 2012 Australasian College for Emergency Medicine and Australasian Society for Emergency Medicine.

  3. Clinicopathologic analysis of 21 cases of nevus sebaceus: A retrospective study

    Directory of Open Access Journals (Sweden)

    Simi C

    2008-01-01

    Full Text Available Background: Nevus sebaceus (NS, otherwise designated as ′organoid nevus′, involves proliferative changes of the sebaceous glands, sweat glands, and the hair follicles. It displays a range of appearances, depending on the lesion′s age. Aims: To study the histopathological features of NS and correlate these with clinical findings. Methods: All skin biopsy specimens over a 12-year period from 1995 to 2007 which had a diagnosis of NS were included. Clinical data with follow-up notes and histopathology were reviewed. Results: Half of the cases had a verrucous clinical appearance, while the rest presented as papules, plaques, or patches. All the cases showed immature hair follicles, and 24% of cases showed immature sebaceous glands. Normal terminal hair follicles were characteristically absent in the lesion. Nineteen percent of the cases showed dilated apocrine glands, and 14% showed hyperplasia of eccrine glands. Epidermal changes in the form of acanthosis, papillomatosis, and hyperkeratosis were seen in 86% of cases. Dilated keratin-filled infundibula were observed in 24% of cases. One case was associated with a squamous cell carcinoma. Conclusions: Nevus sebaceus is a cutaneous hamartoma, consisting of various elements indigenous to the organ. Normal terminal hair follicles are characteristically absent in the lesion although the same may be seen in rest of the epidermis, a feature of diagnostic importance, not usually highlighted in literature. The divergent differentiation observed in NS is consistent with the common embryologic origin of the folliculosebaceous-apocrine unit and should not mislead the pathologist.

  4. Randomization and Data-Analysis Items in Quality Standards for Single-Case Experimental Studies

    Science.gov (United States)

    Heyvaert, Mieke; Wendt, Oliver; Van den Noortgate, Wim; Onghena, Patrick

    2015-01-01

    Reporting standards and critical appraisal tools serve as beacons for researchers, reviewers, and research consumers. Parallel to existing guidelines for researchers to report and evaluate group-comparison studies, single-case experimental (SCE) researchers are in need of guidelines for reporting and evaluating SCE studies. A systematic search was…

  5. 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

  6. A framework for PEST analysis based on neutrosophic cognitive map: case study in a vertical farming initiative

    Directory of Open Access Journals (Sweden)

    Wilmer Ortiz Choez

    2017-09-01

    Full Text Available Recently, neutrosophic cognitive maps and its application in decision making have become a topic of great importance for researchers and practitioners alike. In this paper, a new model PEST analysis is presented based on neutrosophic cognitive maps static analysis. The proposed framework is composed of five activities, identifying PEST factors and sub-factors, modelling interrelation among PEST factors, calculate centrality measures, factor classification, and factors ranking. A case study developed in environment analysis for a vertical farming project was presented, ranking factor based in interrelation and incorporating indeterminacy in the analysis. Further works will concentrate extending the model for incorporating scenario analysis.

  7. Influences of Gender and Computer Gaming Experience in Occupational Desktop Virtual Environments: A Cross-Case Analysis Study

    Science.gov (United States)

    Ausburn, Lynna J.; Ausburn, Floyd B.; Kroutter, Paul J.

    2013-01-01

    This study used a cross-case analysis methodology to compare four line-of-inquiry studies of desktop virtual environments (DVEs) to examine the relationships of gender and computer gaming experience to learning performance and perceptions. Comparison was made of learning patterns in a general non-technical DVE with patterns in technically complex,…

  8. 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....

  9. Source attribution of human campylobacteriosis using a meta-analysis of case-control studies of sporadic infections

    DEFF Research Database (Denmark)

    Coutinho Calado Domingues, Ana Rita; Pires, Sara Monteiro; Hisham Beshara Halasa, Tariq

    2012-01-01

    important sources of human disease is essential for prioritizing food safety interventions and setting public health goals. Numerous case-control studies of sporadic infections of campylobacteriosis have been published. These studies investigated a variety of potential risk factors for disease, often using......, and conclusions. With the objective of identifying the most important risk factors for human sporadic campylobacteriosis, we performed a SR of case-control studies of human sporadic cases and a meta-analysis of the obtained results. A combined SR focusing on Salmonella and Campylobacter studies was performed...... and the results analysed separately. From 1295 identified references, 131 passed the relevance screening, 73 passed the quality assessment stage, and data was extracted from 72 studies. Of these, 38 focused on campylobacteriosis. Information on exposures of cases and controls, and estimated odds ratios...

  10. ABO blood group and esophageal carcinoma risk: from a case-control study in Chinese population to meta-analysis.

    Science.gov (United States)

    Wang, Wei; Liu, Lei; Wang, Zhiwei; Lu, Xiaopeng; Wei, Min; Lin, Tianlong; Zhang, Yixin; Jiang, Songqi; Wang, Qiang; Cao, Ziang; Shi, Minxin

    2014-10-01

    The association between ABO blood group and the risk of esophageal carcinoma (EC) in previously published studies is uncertain and conflicting. The aim of the current study was to determine the correlation of ABO blood group with EC risk via a case-control study and meta-analysis. We performed a population-based case-control study of 3,595 cases and 41,788 controls in Chinese population to evaluate the association between ABO blood group and EC risk. Then, a comprehensive meta-analysis combining our original data and previously published data was conducted to clearly discern the real relationship. The strength of association was measured by odds ratios (ORs) with 95% confidence intervals (CI). In our case-control study, the risk of EC in blood group B was significantly higher than that in non-B groups (A, O, and AB) (OR = 1.15, 95% CI 1.09-1.21). Compared with non-O groups (A, B, and AB), individuals with blood group O demonstrated a reduced risk of EC (OR = 0.90, 95% CI 0.85-0.94). The meta-analysis also indicated that blood group B was associated with significantly higher EC risk (OR = 1.20, 95% CI 1.10-1.31), and people with blood group O had a decreased EC risk (OR = 0.94, 95% CI 0.90-0.99). Neither the case-control study nor the meta-analysis produced any significant association of blood group A or AB with EC risk. Results from our case-control study and the followed meta-analysis confirmed that there was an increased risk of EC in blood group B individuals, whereas a decreased risk of EC was observed in blood group O individuals.

  11. An Analysis of Descriptive Text in English Textbook Using Transitivity System (a Case Study of Reading Passages)

    OpenAIRE

    Anggun, Shafira Khairina

    2016-01-01

    The main focus of the study is to investigate to what extent the descriptive texts in English textbook meet its criteria in terms of purposes, schematic structures and linguistic features. A qualitative case study method with document analysis technique is employed as the method of the study. The study also applied Systemic Functional Linguistics framework proposed mainly by M.A.K. Halliday, yet the study had focused on Transitivity system in analyzing descriptive texts. The prime data of the...

  12. Analysis of factors affecting employee satisfaction: A case study from Pakistan.

    Science.gov (United States)

    Rukh, Lala; Choudhary, Muhammad Abbas; Abbasi, Saddam Akber

    2015-01-01

    Employee job satisfaction has been a research focal point throughout the world. It is a key factor when measuring the performance of an organization and individuals. A leading engineering goods manufacturing enterprise in Pakistan, has been used in this case study. In Pakistan, very limited research has been done with respect to factors affecting job satisfaction. Some research has been done in medical institutions, banks, universities and the information technology sector but large public sector organizations in Pakistan have not been studied. A theoretical foundation for researching factors affecting job satisfaction in large organizations is outlined. The objective of this research is to analyze various demographic, financial and non-financial factors affecting the satisfaction level of employees and to study the effects across different employee groups. This study is based on quantitative data analysis. The employees of the organization under study have been divided into 10 homogeneous groups based on their departments. Information on job related factors (affecting the satisfaction level) have been collected from subsamples of each group using a self-administered questionnaire. An overall sample of 250 (out of total 1100) employees has been selected. Before conducting the survey, reliability of the questionnaire was measured using Cronbach's alpha. The normality of data was also examined using the Kolmogorov Smirnov test. Hypotheses devised to address the research questions were tested by using non-parametric Spearman correlation and Kruskal-Wallis tests. The response rate was 73.2%. Research findings indicated the significant factors that affect the satisfaction level of employees. Median group differences existed between responses based on age, work experience, salary and designation (i.e. job position/rank) of employees. Job satisfaction was also positively and significantly associated with job related factors such as pay, promotion, relation with employees

  13. A Case Study for Student Performance Analysis based on Educational Data Mining (EDM)

    OpenAIRE

    Daxa Kundariya; Prof. Vaseem Ghada

    2016-01-01

    Educational Data Mining (EDM) is a study methodology and an application of data mining techniques related to student’s data from academic database. Like other domain, educational domain also produce vast amount of studying data. To enhance the quality of education system student performance analysis plays an important role for decision support. This paper elaborates a study on various Educational data mining technique and how they could be used to educational system to analysis student perfor...

  14. Source attribution of human salmonellosis using a meta-analysis of case-control studies of sporadic infections

    DEFF Research Database (Denmark)

    Coutinho Calado Domingues, Ana Rita; Pires, Sara Monteiro; Hisham Beshara Halasa, Tariq

    2012-01-01

    Salmonella is an important cause of human illness. Disease is frequently associated with foodborne transmission, but other routes of exposure are recognized. Identifying sources of disease is essential for prioritizing public health interventions. Numerous case-control studies of sporadic......-control studies and a meta-analysis of obtained results. Thirty-five Salmonella case-control studies were identified. In the meta-analysis, heterogeneity between studies and possible sources of bias were investigated, and pooled odds ratios estimated. Results suggested that travel, predisposing factors, eating...... salmonellosis have been published, often using different methodologies and settings. Systematic reviews consist of a formal process for literature review focused on a research question. With the objective of identifying the most important risk factors for salmonellosis, we performed a systematic review of case...

  15. Neurofeedback, Affect Regulation and Attachment: A Case Study and Analysis of Anti-Social Personality

    Science.gov (United States)

    Fisher, Sebern F.

    2007-01-01

    This case study examines the effects of neurofeedback (EEG biofeedback) training on affect regulation in a fifty-five year-old man with a history marked by fear, rage, alcoholism, chronic unemployment and multiple failed treatments. He had been diagnosed with ADHD and attachment disorder and met criteria for anti-social personality disorder. The…

  16. Distributed Analysis with µCRL: a Compendium of Case Studies

    NARCIS (Netherlands)

    Blom, Stefan; Calamé, Jens R.; Lisser, Bert; Orzan, Simona; Pang, Jun; van de Pol, Jan Cornelis; Torabi Dashti, Mohammad; Wijs, Anton J.; Grumberg, O.; Huth, M.

    Models in process algebra with abstract data types can be analysed by state space generation and reduction tools. The μCRL toolset implements a suite of distributed verification tools for clusters of workstations. We illustrate their application to large case studies from a wide range of application

  17. Analysis of Socio-Economic Indicators on Different Bioenergy Case Studies

    NARCIS (Netherlands)

    van Eijck, Janske; Faaij, André

    2014-01-01

    Socio-economic indicators are not fully developed and operational while this is an important aspect of sustainability. Seven case studies were analyzed within the Global-Bio-Pact project covering seven countries and five feedstock types. The 100 indicators that are identified are analyzed and

  18. Holocaust Education: Analysis of Curricula and Frameworks: A Case Study of Illinois

    Science.gov (United States)

    Ragland, Rachel G.; Rosenstein, Daniel

    2014-01-01

    This article addresses how far educational institutions have come in designing authentic and meaningful curricula for teaching the Holocaust at the secondary level. Examined in this article are the historical development of Holocaust education in the United States, with a focus on the state of Illinois as a case study, what contributes to the…

  19. Hidden costs of a typical embodied energy analysis: Brazilian sugarcane ethanol as a case study

    International Nuclear Information System (INIS)

    Agostinho, Feni; Siche, Raul

    2014-01-01

    Worldwide human production systems are tightly coupled to fossil-based energy, the source of which will not be available at low cost in the foreseeable future. Alternative energy sources are being sought for, among which those derived from biomass are considered to have great potential. Brazilian ethanol sugarcane produced at a large scale is being classified in scientific papers and politics as a renewable energy source. However, only the energy return on investment (EROI) and/or the amount of CO 2 released to atmosphere have been considered as indicators of renewability. This work aims to discuss some theoretical points, within an embodied energy analysis, that make its use inappropriate for answering all issues related to the concept of renewability. Emergy accounting (with an “m”) is used as a comparative tool and the Brazilian sugarcane ethanol is evaluated as case study. An EROI of 6.7 for ethanol was obtained, showing that for each unit of “commercial energy” invested within the process, 6.7 units of another kind of energy is obtained – this index shows an excellent value for energy efficiency, but it does not reflect the renewability of ethanol. On the other hand, emergy accounting shows a renewability index of 19%, indicating a low rating for sugarcane ethanol. All scientific methodologies available to assess potential energy sources have their pros and cons, but the analyst must be aware that each methodology supplies different indicators with different meanings. Energy analysts should use methodologies appropriately, avoiding wider conclusions not actually represented by indices calculated. - Highlights: • The renewability discourse of biofuels is discussed focusing on the Brazilian sugarcane ethanol. • Both energy efficiency and CO 2 emitted hardly indicate the renewability of biofuels. • Emergy evaluation is introduced as a potential tool when assessing renewability. • Analysts must use methodologies accordingly and avoid general

  20. Scenario-Based Case Study Analysis of Asteroid Mitigation in the Short Response Time Regime

    Science.gov (United States)

    Seery, B.; Greenaugh, K. C.

    2017-12-01

    Asteroid impact on Earth is a rare but inevitable occurrence, with potentially cataclysmic consequences. If a pending impact is discovered, mitigation options include civil-defense preparations as well as missions to deflect the asteroid and/or robustly disrupt and disperse it to an extent that only a negligible fraction remains on a threatening path (National Research Council's "Defending the Planet," 2010). If discovered with sufficient warning time, a kinetic impactor can deflect smaller objects, but response delays can rule out the option. If a body is too large to deflect by kinetic impactor, or the time for response is insufficient, deflection or disruption can be achieved with a nuclear device. The use of nuclear ablation is considered within the context of current capabilities, requiring no need for nuclear testing. Existing, well-understood devices are sufficient for the largest known Potentially Hazardous Objects (PHOs). The National Aeronautics and Space Administration/Goddard Space Flight Center and the Department of Energy/National Nuclear Security Administration are collaborating to determine the critical characterization issues that define the boundaries for the asteroid-deflection options. Drawing from such work, we examine the timeline for a deflection mission, and how to provide the best opportunity for an impactor to suffice by minimizing the response time. This integrated problem considers the physical process of the deflection method (impact or ablation), along with the spacecraft, launch capability, risk analysis, and the available intercept flight trajectories. Our joint DOE/NASA team has conducted case study analysis of three distinctly different PHOs, on a hypothetical earth impacting trajectory. The size of the design reference bodies ranges from 100 - 500 meters in diameter, with varying physical parameters such as composition, spin state, and metallicity, to name a few. We assemble the design reference of the small body in question using

  1. Multiple case study analysis of young women's experiences in high school engineering

    Science.gov (United States)

    Pollock, Meagan C.

    richly describe the diversity of experiences. A multiple case study analysis, this study answers the question: How do gender, class, race, and other components of intersectionality, influence high school females' experiences in engineering? Nine young women taking a high school engineering course in a suburban high school in Central Texas during the school year 2011-2012 volunteered to participate. The students were observed in their engineering classes for half of the spring 2012 semester, with bi-weekly interviews with the students, monthly interviews with the teacher, and a single interview with a parent of each volunteer. The nine rich case studies provide us with new stories that help prevent us from narrowing the experiences of women to a single incomplete stereotype, because these young women vary across race, socioeconomic backgrounds, and sexual orientation. Although each story is unique, there are commonalities among their experiences, including family, influence, classroom environment, biases, and beliefs. By drawing from their collective experiences in high school engineering, the findings direct us toward recommendations for educators, parents, engineering curriculum developers, designers of teacher professional development, and future research to improve equity and access for every student in engineering.

  2. Financial Analysis of Incentive Mechanisms to Promote Energy Efficiency: Case Study of a Prototypical Southwest Utility

    Energy Technology Data Exchange (ETDEWEB)

    Cappers, Peter; Goldman, Charles; Chait, Michele; Edgar, George; Schlegel, Jeff; Shirley, Wayne

    2009-03-04

    alternative incentive approaches on utility shareholders and customers if energy efficiency is implemented under various utility operating, cost, and supply conditions.We used and adapted a spreadsheet-based financial model (the Benefits Calculator) which was developed originally as a tool to support the National Action Plan for Energy Efficiency (NAPEE). The major steps in our analysis are displayed graphically in Figure ES- 1. Two main inputs are required: (1) characterization of the utility which includes its initial financial and physical market position, a forecast of the utility?s future sales, peak demand, and resource strategy to meet projected growth; and (2) characterization of the Demand-Side Resource (DSR) portfolio ? projected electricity and demand savings, costs and economic lifetime of a portfolio of energy efficiency (and/or demand response) programs that the utility is planning or considering implementing during the analysis period. The Benefits Calculator also estimates total resource costs and benefits of the DSR portfolio using a forecast of avoided capacity and energy costs. The Benefits Calculator then uses inputs provided in the Utility Characterization to produce a ?business-as usual? base case as well as alternative scenarios that include energy efficiency resources, including the corresponding utility financial budgets required in each case. If a decoupling and/or a shareholder incentive mechanism are instituted, the Benefits Calculator model readjusts the utility?s revenue requirement and retail rates accordingly. Finally, for each scenario, the Benefits Calculator produces several metrics that provides insights on how energy efficiency resources, decoupling and/or a shareholder incentive mechanism impacts utility shareholders (e.g. overall earnings, return on equity), ratepayers (e.g., average customer bills and rates) and society (e.g. net resource benefits).

  3. Fish intake and ovarian cancer risk: a meta-analysis of 15 case-control and cohort studies.

    Directory of Open Access Journals (Sweden)

    Pei-yue Jiang

    Full Text Available BACKGROUND: Previous epidemiological studies have shown that fish consumption may modify the risk of ovarian cancer. However, these studies yielded controversial results. The present meta-analysis was undertaken to evaluate the relationship between fish intake and ovarian cancer risk. METHODS: A literature search was carried out using Pubmed, Embase, and Cochrane Library Central database for all relevant studies up to August 2013. We pooled the relative risks (RR from individual studies using fixed-effect or random-effect model, and carried out heterogeneity and publication bias analyses. RESULTS: A total of 15 (ten case-control, and five cohort studies were included in the present meta-analysis, representing data for 889,033 female subjects and 6,087 ovarian cancer cases. We found that total fish intake was not significantly associated with the risk of ovarian cancer among cohort studies (RR = 1.04 95% CI [0.89, 1.22] as well as case-control studies (RR = 0.90, 95% CI [0.73,1.12]. There was no evidence of publication bias as suggested by Begg's test (P = 0.55 and Egger's test(P = 0.29. CONCLUSIONS: The present meta-analysis showed that total fish consumption was not significantly associated with the risk of ovarian cancer. Further analysis on different fish species and food preparation methods should be conducted in future studies.

  4. Decision-making on the integration of renewable energy in the mining industry: A case studies analysis, a cost analysis and a SWOT analysis

    Directory of Open Access Journals (Sweden)

    Kateryna Zharan

    2017-01-01

    Full Text Available The mining industry is showing increasing interest in using renewable energy (RE technologies as one of the principles of sustainable mining. This is witnessed in several pilot projects in major mining countries around the world. Positive factors which favor this interest are gaining importance and negative barrier factors seem to be less relevant. For a mine operator, the switch from fossil fuel to RE technologies is the outcome of decision making processes. So far, research about such decision making on the use of RE in mining is underdeveloped. The purpose of this paper to present a practical decision rule based on a principle of indifference between RE and fossil fuel technologies and on appropriate time management. To achieve this objective, three investigations are made: (i a case studies analysis, (ii a comparative cost analysis, and (iii a SWOT analysis.

  5. Reproductive Justice and Media Framing: A Case-Study Analysis of Problematic Frames in the Popular Media

    Science.gov (United States)

    Jaworski, Beth K.

    2009-01-01

    Reproductive justice is an important and comprehensive conceptualization for understanding the complexity of reproductive issues faced by women. When considering attitudes and beliefs that give rise to policies related to reproduction, it is critical to examine the ways in which the issues are framed. In this case-study-style analysis, the…

  6. Climate change impact and adaptation research requires integrated assessment and farming systems analysis: a case study in the Netherlands

    NARCIS (Netherlands)

    Reidsma, P.; Wolf, J.; Kanellopoulos, A.; Schaap, B.F.; Mandryk, M.; Verhagen, J.; Ittersum, van M.K.

    2015-01-01

    Rather than on crop modelling only, climate change impact assessments in agriculture need to be based on integrated assessment and farming systems analysis, and account for adaptation at different levels. With a case study for Flevoland, the Netherlands, we illustrate that (1) crop models cannot

  7. Air Quality Analysis of a Multilevel Complex Interchange : Case Study Using the Improved TSC/EPA Model

    Science.gov (United States)

    1976-12-01

    This report describes a case study of an air quality analysis prepared by the U.S. Department of Transportation (DOT), Transportation Systems Center (TSC). The site analyzed was the proposed I-83/I-95 interchange in Baltimore, Maryland. This intercha...

  8. A qualitative model for strategic analysis of organizations. Application and alternative proposal on a study case

    Directory of Open Access Journals (Sweden)

    Santiago Ferro Moreno

    2015-12-01

    Full Text Available The strategic analysis of organizations is based on the internal and external environments, in order to identify positive and negative variables and factors. The interrelation and timing of these strategic forces are essential to create alternative solutions that tend to achieve the organizational objectives.The normative prospective has theorical and methodological foundations to create a desired future and from it, be able to identify impelling and restraining forces that have influence on the particular problematic situation (go from the current situation to a better one in a certain time.The aim of this article is to analyze on a strategic way a real case with a normative-prospective model that considers the temporal dynamics of the factors impact and variables in time allowing to suggest alternative solutions.Semi-structured interviews were performed with all the employees of this case and structured observations and workshops with the commercial and general management.In consequence, with the results, the desired, current and improved situations were built. Additionally, forces were identified classified and appreciated and lastly solutions were suggested. With the proposed prospective method, alternative solutions could be constructed in order to settle temporary organizational objectives. No constraints were found to use the current method in other cases.Keywords: Strategic forces, Normative prospective, Problematic situations, Strategies

  9. Case study feasibility analysis of the Pelamis wave energy convertor in Ireland, Portugal and North America

    International Nuclear Information System (INIS)

    Dalton, G.J.; Alcorn, R.; Lewis, T.

    2010-01-01

    The performance and economic viability of the Pelamis wave energy converter (WEC) has been investigated over a 20 year project time period using 2007 wave energy data from various global locations: Ireland, Portugal, USA and Canada. Previous reports assessing the Pelamis quote a disparate range of financial returns for the Pelamis, necessitating a comparative standardised assessment of wave energy economic indicators. An Excel model (NAVITAS) was created for this purpose which estimated the annual energy output of Pelamis for each location using wave height (H s ) and period (T z ) data, and produced financial results dependant on various input parameters. The economic indicators used for the analysis were cost of electricity (COE), net present value (NPV) and internal rate of return (IRR), modelled at a tariff rate of EUR0.20/kWh. Analysis of the wave energy data showed that the highest annual energy output (AEO) and capacity for the Pelamis was the Irish site, as expected. Portugal returned lower AOE similar to the lesser North American sites. Monthly energy output was highest in the winter, and was particularly evident in the Irish location. Moreover, the difference between the winter wave energy input and the Pelamis energy output for Ireland was also significant as indicated by the capture width, suggesting that Pelamis design was not efficiently capturing all the wave energy states present during that period. Modelling of COE for the various case study locations showed large variation in returns, depending on the number of WEC modelled and the initial cost input and learning curve. COE was highest when modelling single WEC in comparison to multiples, as well as when using 2004 initial costs in comparison to 2008 costs (at which time price of materials peaked). Ireland returned the lowest COE of EUR0.05/kWh modelling over 100 WEC at 2004 cost of materials, and EUR0.15/kWh at 2008 prices. Although favourable COE were recorded from some of the modelled scenarios

  10. A socio-technical analysis of work with ideas in NPD: an industrial case study

    DEFF Research Database (Denmark)

    Gish, Liv; Hansen, Claus Thorp

    2013-01-01

    on piecing together a number of ideas that were developed and disseminated in a large industrial company. We do this through an in-depth case study of the development of the energy-labeled circulation pump Alpha Pro, developed by one of the world’s leading pump manufacturers, Grundfos. Using a socio......The work with ideas is perceived by both academics and industry to be an important element in new product development and has thus been the subject of investigation in many different research fields. In this paper, we investigate a specific case showing how a successful product was developed based......-technical approach, we focus especially on the actors involved and the contextual factors, and less on the detailed development of technical ideas. In our study, we observe that (1) ideas are pieced together from previous ideas and results; (2) ideas are implemented through continuous mobilization of support...

  11. Multicriterial analysis in operation strategy: case study with rice purchasers of six retailer firms

    Directory of Open Access Journals (Sweden)

    Marcelo Fernandes Pacheco Dias

    2011-09-01

    Full Text Available This article aims at presenting a multiple case study in which we measured the prioritization given to competitive factors by six companies that buy rice products for retailing. The multiple case study took place in six large self-service food agents that operate in Santa Catarina and Rio Grande do Sul. The competition in the industry was described by a tree-like structure, which first layer includes: price, quality, variety, image, deliver and services as competitive factors. For prioritizing, we distributed relative importance between factors, with the aid of the AHP method of multicriteria decision support. Quality was prioritized in five companies. The other one prioritized variety. Internal comparisons were made with the results from second layer of the structure.

  12. Parametric Analysis of Acoustical Requirements for Lateral Reflections: Melbourne Recital Hall Case Study

    Directory of Open Access Journals (Sweden)

    Erica Claustro

    2013-06-01

    Full Text Available This paper is an investigation of the Melbourne Recital Centre as a case study to define the parameters necessary for good acoustical quality as it relates to the Binaural Quality Index and determining the intimacy of the hall by its initial time delay gap. The Melbourne Recital Centre, designed by Ashton Raggatt McDougall Architects, is a significant case study, as its design was driven by the acoustic requirements of reflection and diffusion through Odeon Acoustical Software. It achieves the same acoustical quality of older, ornately designed shoebox concert halls, from the perspective of contemporary design and fabrication tools and techniques. The sleek design of the Melbourne Recital Centre successfully reflects sound waves in low, mid, and high frequencies due to corresponding wall panel differentiation in the corresponding scales, as engineered by Arup Acoustics.

  13. Inventory analysis and carbon footprint of coastland-hotel services: A Spanish case study

    OpenAIRE

    Puig Vidal, Rita; Kiliç, Eylem; Navarro Diarte, Alejandra; Alberti, Jaume; Chacon, Lorenzo; Fullana Palmer, Pere

    2017-01-01

    Tourism is a key industry in the Spanish economy. Spain was in the World top three ranking by international tourist arrivals and by income in 2015. The development of the tourism industry is essential to maintain the established economic system. However, if the environmental requirements were not taken into account, the country would face a negative effect on depletion of local environmental resources from which tourism depends. This case study evaluates, through a life cycle perspective, the...

  14. The Analysis of Project Finance: a Case Study of Kazakhstan Caspian Transportation System Project

    OpenAIRE

    Serikbayeva, Aigul

    2011-01-01

    Although project finance is a large and fast growing field in finance, there has been very little academic research in that area. The main reason for this deficit is that it is a relatively new sphere in finance and it is difficult to access the information about the implementation of projects from the companies that implement them. This project will provide an overview of how companies finance large infrastructure projects through a case study of the Kazakhstan Caspian Transportation System ...

  15. VGC analyzer: a software for statistical analysis of fully crossed multiple-reader multiple-case visual grading characteristics studies

    International Nuclear Information System (INIS)

    Baath, Magnus; Hansson, Jonny

    2016-01-01

    Visual grading characteristics (VGC) analysis is a non-parametric rank-invariant method for analysis of visual grading data. In VGC analysis, image quality ratings for two different conditions are compared by producing a VGC curve, similar to how the ratings for normal and abnormal cases in receiver operating characteristic (ROC) analysis are used to create an ROC curve. The use of established ROC software for the analysis of VGC data has therefore previously been proposed. However, the ROC analysis is based on the assumption of independence between normal and abnormal cases. In VGC analysis, this independence cannot always be assumed, e.g. if the ratings are based on the same patients imaged under both conditions. A dedicated software intended for analysis of VGC studies, which takes possible dependencies between ratings into account in the statistical analysis of a VGC study, has therefore been developed. The software-VGC Analyzer-determines the area under the VGC curve and its uncertainty using non-parametric re-sampling techniques. This article gives an introduction to VGC Analyzer, describes the types of analyses that can be performed and instructs the user about the input and output data. (authors)

  16. Welding and lung cancer in a pooled analysis of case-control studies.

    Science.gov (United States)

    Kendzia, Benjamin; Behrens, Thomas; Jöckel, Karl-Heinz; Siemiatycki, Jack; Kromhout, Hans; Vermeulen, Roel; Peters, Susan; Van Gelder, Rainer; Olsson, Ann; Brüske, Irene; Wichmann, H-Erich; Stücker, Isabelle; Guida, Florence; Tardón, Adonina; Merletti, Franco; Mirabelli, Dario; Richiardi, Lorenzo; Pohlabeln, Hermann; Ahrens, Wolfgang; Landi, Maria Teresa; Caporaso, Neil; Consonni, Dario; Zaridze, David; Szeszenia-Dabrowska, Neonila; Lissowska, Jolanta; Gustavsson, Per; Marcus, Michael; Fabianova, Eleonora; 't Mannetje, Andrea; Pearce, Neil; Tse, Lap Ah; Yu, Ignatius Tak-Sun; Rudnai, Peter; Bencko, Vladimir; Janout, Vladimir; Mates, Dana; Foretova, Lenka; Forastiere, Francesco; McLaughlin, John; Demers, Paul; Bueno-de-Mesquita, Bas; Boffetta, Paolo; Schüz, Joachim; Straif, Kurt; Pesch, Beate; Brüning, Thomas

    2013-11-15

    Several epidemiologic studies have indicated an increased risk of lung cancer among welders. We used the SYNERGY project database to assess welding as a risk factor for developing lung cancer. The database includes data on 15,483 male lung cancer cases and 18,388 male controls from 16 studies in Europe, Canada, China, and New Zealand conducted between 1985 and 2010. Odds ratios and 95% confidence intervals between regular or occasional welding and lung cancer were estimated, with adjustment for smoking, age, study center, and employment in other occupations associated with lung cancer risk. Overall, 568 cases and 427 controls had ever worked as welders and had an odds ratio of developing lung cancer of 1.44 (95% confidence interval: 1.25, 1.67) with the odds ratio increasing for longer duration of welding. In never and light smokers, the odds ratio was 1.96 (95% confidence interval: 1.37, 2.79). The odds ratios were somewhat higher for squamous and small cell lung cancers than for adenocarcinoma. Another 1,994 cases and 1,930 controls had ever worked in occupations with occasional welding. Work in any of these occupations was associated with some elevation of risk, though not as much as observed in regular welders. Our findings lend further support to the hypothesis that welding is associated with an increased risk of lung cancer.

  17. Barriers and opportunities in realising sustainable energy concepts--an analysis of two Swiss case studies

    International Nuclear Information System (INIS)

    Pohl, Christian; Gisler, Priska

    2003-01-01

    What assists and what hinders sustainable energy use in being put into effect? Two case studies of sustainable energy concepts--the Zurich Solarstromboerse, where electricity can be purchased that is produced by solar panels, and the Swiss CO 2 -law, a consensus oriented implementation of the Kyoto-protocol--were analysed in order to investigate this question. In both case studies the unfolding of the sustainable energy concepts is reconstructed as a process starting with an abstract idea moving to a concrete realisation. This process passes through a series of different social worlds and is, in turn, affected by them. These social worlds are e.g. those of the concerned scientists, the professional investors, energy suppliers or governmental agencies. The case studies reveal three neuralgic challenges that have to be met when a concept advances from idea to realisation through the social worlds: Firstly, the translation between social worlds changes the content of the idea. Secondly, the way each social world looks at things (socially) constructs best solutions to problems and hides others. Thirdly, the actual dynamics of the social world within which it is finally implemented must be adopted by the idea. In order to integrate these neuralgic points, scientists as well as other inventors have to retain responsibility for their sustainable energy ideas and are requested to follow them through the social worlds in order to critically survey and eventually influence their 'content in flux'

  18. Source Code Analysis to Remove Security Vulnerabilities in Java Socket Programs: A Case Study

    OpenAIRE

    Natarajan Meghanathan

    2013-01-01

    This paper presents the source code analysis of a file reader server socket program (connection-oriented sockets) developed in Java, to illustrate the identification, impact analysis and solutions to remove five important software security vulnerabilities, which if left unattended could severely impact the server running the software and also the network hosting the server. The five vulnerabilities we study in this paper are: (1) Resource Injection, (2) Path Manipulation, (3) System Informati...

  19. Meta-analysis of thirty-two case-control and two ecological radon studies of lung cancer.

    Science.gov (United States)

    Dobrzynski, Ludwik; Fornalski, Krzysztof W; Reszczynska, Joanna

    2017-11-23

    A re-analysis has been carried out of thirty-two case-control and two ecological studies concerning the influence of radon, a radioactive gas, on the risk of lung cancer. Three mathematically simplest dose-response relationships (models) were tested: constant (zero health effect), linear, and parabolic (linear-quadratic). Health effect end-points reported in the analysed studies are odds ratios or relative risk ratios, related either to morbidity or mortality. In our preliminary analysis, we show that the results of dose-response fitting are qualitatively (within uncertainties, given as error bars) the same, whichever of these health effect end-points are applied. Therefore, we deemed it reasonable to aggregate all response data into the so-called Relative Health Factor and jointly analysed such mixed data, to obtain better statistical power. In the second part of our analysis, robust Bayesian and classical methods of analysis were applied to this combined dataset. In this part of our analysis, we selected different subranges of radon concentrations. In view of substantial differences between the methodology used by the authors of case-control and ecological studies, the mathematical relationships (models) were applied mainly to the thirty-two case-control studies. The degree to which the two ecological studies, analysed separately, affect the overall results when combined with the thirty-two case-control studies, has also been evaluated. In all, as a result of our meta-analysis of the combined cohort, we conclude that the analysed data concerning radon concentrations below ~1000 Bq/m3 (~20 mSv/year of effective dose to the whole body) do not support the thesis that radon may be a cause of any statistically significant increase in lung cancer incidence. © The Author 2017. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Radiation Oncology.

  20. A Case Study Based Analysis of Performance Metrics for Green Infrastructure

    Science.gov (United States)

    Gordon, B. L.; Ajami, N.; Quesnel, K.

    2017-12-01

    Aging infrastructure, population growth, and urbanization are demanding new approaches to management of all components of the urban water cycle, including stormwater. Traditionally, urban stormwater infrastructure was designed to capture and convey rainfall-induced runoff out of a city through a network of curbs, gutters, drains, and pipes, also known as grey infrastructure. These systems were planned with a single-purpose and designed under the assumption of hydrologic stationarity, a notion that no longer holds true in the face of a changing climate. One solution gaining momentum around the world is green infrastructure (GI). Beyond stormwater quality improvement and quantity reduction (or technical benefits), GI solutions offer many environmental, economic, and social benefits. Yet many practical barriers have prevented the widespread adoption of these systems worldwide. At the center of these challenges is the inability of stakeholders to know how to monitor, measure, and assess the multi-sector performance of GI systems. Traditional grey infrastructure projects require different monitoring strategies than natural systems; there are no overarching policies on how to best design GI monitoring and evaluation systems and measure performance. Previous studies have attempted to quantify the performance of GI, mostly using one evaluation method on a specific case study. We use a case study approach to address these knowledge gaps and develop a conceptual model of how to evaluate the performance of GI through the lens of financing. First, we examined many different case studies of successfully implemented GI around the world. Then we narrowed in on 10 exemplary case studies. For each case studies, we determined what performance method the project developer used such as LCA, TBL, Low Impact Design Assessment (LIDA) and others. Then, we determined which performance metrics were used to determine success and what data was needed to calculate those metrics. Finally, we

  1. Abused women's experiences of a primary care identification and referral intervention: a case study analysis.

    Science.gov (United States)

    Bradbury-Jones, Caroline; Clark, Maria; Taylor, Julie

    2017-12-01

    The aim of this study was to report the findings of a qualitative case study that investigated abused women's experiences of an identification and referral intervention and to discuss the implications for nurses, specifically those working in primary and community care. Domestic violence and abuse is a significant public health issue globally but it is a hidden problem that is under-reported. In the UK, Identification and Referral to Improve Safety is a primary care-based intervention that has been found to increase referral rates of abused women to support and safety services. This paper reports on the findings of an evaluation study of two sites in England. Qualitative study with a case study design. In line with case study design, the entire evaluation study employed multiple data collection methods. We report on the qualitative interviews with women referred through the programme. The aim was to elicit their experiences of the three aspects of the intervention: identification; referral; safety. Data collection took place March 2016. Ten women took part. Eight had exited the abusive relationship but two remained with the partner who had perpetrated the abuse. Women were overwhelmingly positive about the programme and irrespective of whether they had remained or exited the relationship all reported perceptions of increased safety and improved health. Nurses have an important role to play in identifying domestic violence and abuse and in referral and safety planning. As part of a portfolio of domestic violence and abuse interventions, those that empower women to take control of their safety (such as Identification and Referral to Improve Safety) are important. © 2017 John Wiley & Sons Ltd.

  2. Reliability analysis of idealized tunnel support system using probability-based methods with case studies

    Science.gov (United States)

    Gharouni-Nik, Morteza; Naeimi, Meysam; Ahadi, Sodayf; Alimoradi, Zahra

    2014-06-01

    In order to determine the overall safety of a tunnel support lining, a reliability-based approach is presented in this paper. Support elements in jointed rock tunnels are provided to control the ground movement caused by stress redistribution during the tunnel drive. Main support elements contribute to stability of the tunnel structure are recognized owing to identify various aspects of reliability and sustainability in the system. The selection of efficient support methods for rock tunneling is a key factor in order to reduce the number of problems during construction and maintain the project cost and time within the limited budget and planned schedule. This paper introduces a smart approach by which decision-makers will be able to find the overall reliability of tunnel support system before selecting the final scheme of the lining system. Due to this research focus, engineering reliability which is a branch of statistics and probability is being appropriately applied to the field and much effort has been made to use it in tunneling while investigating the reliability of the lining support system for the tunnel structure. Therefore, reliability analysis for evaluating the tunnel support performance is the main idea used in this research. Decomposition approaches are used for producing system block diagram and determining the failure probability of the whole system. Effectiveness of the proposed reliability model of tunnel lining together with the recommended approaches is examined using several case studies and the final value of reliability obtained for different designing scenarios. Considering the idea of linear correlation between safety factors and reliability parameters, the values of isolated reliabilities determined for different structural components of tunnel support system. In order to determine individual safety factors, finite element modeling is employed for different structural subsystems and the results of numerical analyses are obtained in

  3. Analysis of Industrial Structure, Firm Conduct and Performance – A Case Study of the Textile Industry

    OpenAIRE

    Lee Yueh-Chiang; Yang Yao-Hung

    2016-01-01

    With the analysis of the industrial economic theory structure – conduct – performance model, the study investigates the existence of significant relationship among market structure, conduct and performance. Twelve Taiwan companies are studied during the study period from 2006 to 2012 which are analysed with fixed effect and random effect of panel data and ordinary least squares estimation. The empirical result backs the statement by “Structuralism” that market structure (market share, entry b...

  4. 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.

  5. Urban land use and land cover change analysis and modeling a case study area Malatya, Turkey

    OpenAIRE

    Baysal, Gülendam

    2013-01-01

    Dissertation submitted in partial fulfillment of the requirements for the Degree of Master of Science in Geospatial Technologies. This research was conducted to analyze the land use and land cover changes and to model the changes for the case study area Malatya, Turkey. The first step of the study was acquisition of multi temporal data in order to detect the changes over the time. For this purpose satellite images (Landsat 1990-2000-2010) have been used. In order to acquire data from satel...

  6. Integrated economy - energy - environment policy analysis : a case study for the People's Republic of China

    OpenAIRE

    Zhang, Z.

    1996-01-01


    This study is the first systematic and comprehensive attempt to deal with the economic implications of carbon abatement for the Chinese economy in the light of the economics of climate change, of which this dissertation is the results. It consists of nine chapters. After a brief introduction, Chapter 2 discusses some economic aspects of climate change. This in turn will serve as a good guide to pursuing the case study for CO 2

  7. Evaluation of energy efficiency using thermodynamics analysis in a hydropower plant. A case study

    Energy Technology Data Exchange (ETDEWEB)

    Kahraman, Goekhan; Yuecel, Halit Luetfi; Oeztop, Hakan F. [Department of Mechanical Engineering, Firat University, TR-23119 Elazig (Turkey)

    2009-06-15

    In this study, efficiency evaluation for Keban hydropower plant (KHPP), located in Elazig-Turkey, was performed both experimentally and numerically by using thermodynamic analysis. Turbine efficiency was measured with direct method by measuring temperature of turbine inlet and outlet. Theoretical analysis was performed using a computer code and employing the experimental data. A good agreement between the calculated and measured values was observed. The study shows that using thermodynamic method for determination of turbine efficiency is an effective and easy method in a hydraulic power plant. (author)

  8. Overview of FENCH-GHG analysis: A case study in Japan

    International Nuclear Information System (INIS)

    Uchiyama, Y.

    1996-01-01

    The study presents life-cycle analyses of net energy and CO 2 emissions from electricity supply systems in Japan. The full energy chains of electricity supply systems of nuclear, fossil and renewable energies are investigated. The energy chains comprise activities such as extraction, processing and transportation of fuel, power generation, dismantling of plants, and disposal of wastes. Direct and indirect CO 2 emissions from full energy chain are analyzed with a combined approach of the process analysis and the input/output table. The methodologies and database developed in this study are useful for integrated environmental analysis of electricity supply systems. (author). 6 figs, 2 tabs

  9. Postmortem bone marrow analysis in forensic science: study of 73 cases and review of the literature.

    Science.gov (United States)

    Tattoli, Lucia; Tsokos, Michael; Sautter, Julia; Anagnostopoulos, Joannis; Maselli, Eloisa; Ingravallo, Giuseppe; Delia, Mario; Solarino, Biagio

    2014-01-01

    In forensic sciences, bone marrow (BM) is an alternative matrix in postmortem toxicology because of its good resistance to autolysis and contaminations. Nevertheless, few studies have been focused on postmortem BM morphological changes after pathological stimuli. We examined 73 BM samples from forensic autopsies; causes of death were both natural and traumatic. BM samples were collected from the sternum by needle aspiration and biopsy; in selected cases, immunohistochemistry was performed. Few autolytic changes were found; BM cellularity decreased with increasing age and postmortem interval. Notable cell changes were detected in 45 cases (61.64%): neoplastic (n=4), and non-neoplastic BM findings (n=41), including multiorgan failure/sepsis (n=26), myelodisplastic-like conditions (n=11), and anaphylactic reactions (n=4). The results showed that BM cellularity supported circumstantial and autopsy findings, suggesting that BM samples could be a useful tool in forensic science applications. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  10. How Multilevel Societal Learning Processes Facilitate Transformative Change: A Comparative Case Study Analysis on Flood Management

    Directory of Open Access Journals (Sweden)

    Claudia Pahl-Wostl

    2013-12-01

    Full Text Available Sustainable resources management requires a major transformation of existing resource governance and management systems. These have evolved over a long time under an unsustainable management paradigm, e.g., the transformation from the traditionally prevailing technocratic flood protection toward the holistic integrated flood management approach. We analyzed such transformative changes using three case studies in Europe with a long history of severe flooding: the Hungarian Tisza and the German and Dutch Rhine. A framework based on societal learning and on an evolutionary understanding of societal change was applied to identify drivers and barriers for change. Results confirmed the importance of informal learning and actor networks and their connection to formal policy processes. Enhancing a society's capacity to adapt is a long-term process that evolves over decades, and in this case, was punctuated by disastrous flood events that promoted windows of opportunity for change.

  11. Repeat film analysis and its implications for quality assurance in dental radiology: An institutional case study

    Directory of Open Access Journals (Sweden)

    Shruthi Acharya

    2015-01-01

    Full Text Available Context: The goal of any radiologist is to produce the highest quality diagnostic radiographs, while keeping patient exposure as low as reasonably achievable (ALARA. Aims: The aim of this study was to describe the reasons for radiograph rejections through a repeat film analysis in an Indian dental school. Settings and Design: An observational study conducted in the Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Manipal. Materials and Methods: During a 6-month study period, a total of 9,495 intra-oral radiographs and 2339 extraoral radiographs taken in the Radiology Department were subjected to repeat film analysis. Statistical Analysis Used: SPSS Version 16. Descriptive analysis used. Results: The results showed that the repeat rates were 7.1% and 5.86% for intraoral and extraoral radiographs, respectively. Among the causes for errors reported, positioning error (38.7% was the most common, followed by improper angulations (26.1%, and improper film placement (11.2% for intra-oral radiographs. The study found that the maximum frequency of repeats among extraoral radiographs was for panoramic radiographs (49% followed by lateral cephalogram (33%, and paranasal sinus view (14%. It was also observed that repeat rate of intraoral radiographs was highest for internees (44.7%, and undergraduate students (28.2%. Conclusions: The study pointed to a need for more targeted interventions to achieve the goal of keeping patient exposure ALARA in a dental school setting.

  12. The efficiency effects of bank mergers: An analysis of case studies in Vietnam

    Directory of Open Access Journals (Sweden)

    Tu DQ Le

    2017-02-01

    Full Text Available This paper employs Data Envelopment Analysis to examine the relative efficiency for Vietnamese banks from 2008 to 2015. Efficiency level is relatively high and remains stable over the examined period, suggesting the banking system is less affected by the global financial crisis. More specifically, technical efficiency and scale efficiency in Vietnamese banking is examined when controlling for problem loans. We suggest that controlling for the exogenous impact of problem loans is important for joint-stock banks. Furthermore, our results do not support the hypothesis that acquiring banks are more efficient than the acquired banks. The efficiency improved in majority of merger cases and was not related to acquiring bank’s efficiency advantage over its targets. Small-and medium- banks should be promoted in future acquisitions as a means to enjoying efficiency gains. Finally, there are mixed results on the extent to which the benefits of efficiency gains are passed on to the public.

  13. Distributed medical image analysis and diagnosis through crowd-sourced games: a malaria case study.

    Directory of Open Access Journals (Sweden)

    Sam Mavandadi

    Full Text Available In this work we investigate whether the innate visual recognition and learning capabilities of untrained humans can be used in conducting reliable microscopic analysis of biomedical samples toward diagnosis. For this purpose, we designed entertaining digital games that are interfaced with artificial learning and processing back-ends to demonstrate that in the case of binary medical diagnostics decisions (e.g., infected vs. uninfected, with the use of crowd-sourced games it is possible to approach the accuracy of medical experts in making such diagnoses. Specifically, using non-expert gamers we report diagnosis of malaria infected red blood cells with an accuracy that is within 1.25% of the diagnostics decisions made by a trained medical professional.

  14. A markedness analysis of initial consonant clusters in Aphasic Phonological Impairment: A case study

    Directory of Open Access Journals (Sweden)

    Lesley Wolk

    1978-11-01

    Full Text Available The purpose of  this study was to assess both the theoretical and clinical value of  markedness theory in phonological impairment in aphasia. A markedness analysis was carried out on initial consonant clusters in a single aphasic adult, at two points during the spontaneous recovery phase. Results revealed systematic, rule-governed behaviour, reflecting  similar linguistic trends, in terms of  natural segments and natural processes, on both testing occasions. Some inadequacies of  the distinctive feature  approach are discussed. The findings  of  this study suggest that a markedness analysis may be extremely useful  for  the analysis and treatment of  phonological disorders in aphasia.

  15. SWOT Analysis for the Promotion of Energy Efficiency in Rural Buildings: A Case Study of China

    Directory of Open Access Journals (Sweden)

    Lin Zhang

    2018-04-01

    Full Text Available Over half of China’s total energy consumption is attributed to rural buildings. However, unlike the research into urban areas, few studies have explored the problems of building energy efficiency (BEE in rural China. This study aims to establish an appropriate strategic plan for promoting rural BEE (RBEE in China by conducting a strength-weakness-opportunity-threat (SWOT analysis. Analysis data are obtained from multiple sources, including a comprehensive literature review, governmental reports, related regulations, and semi-structured interviews with a number of critical stakeholders. A matrix of the SWOT analysis is derived to reveal the drivers and barriers in the course of implementing RBEE. Five critical strategies are proposed. We also attempt to explore the internal and external conditions of RBEE in China, which can contribute to the customization and prioritization of policy recommendations for the Chinese government.

  16. Waste management barriers in developing country hospitals: Case study and AHP analysis.

    Science.gov (United States)

    Delmonico, Diego V de Godoy; Santos, Hugo H Dos; Pinheiro, Marco Ap; de Castro, Rosani; de Souza, Regiane M

    2018-01-01

    Healthcare waste management is an essential field for both researchers and practitioners. Although there have been few studies using statistical methods for its evaluation, it has been the subject of several studies in different contexts. Furthermore, the known precarious practices for waste management in developing countries raise questions about its potential barriers. This study aims to investigate the barriers in healthcare waste management and their relevance. For this purpose, this paper analyses waste management practices in two Brazilian hospitals by using case study and the Analytic Hierarchy Process method. The barriers were organized into three categories - human factors, management, and infrastructure, and the main findings suggest that cost and employee awareness were the most significant barriers. These results highlight the main barriers to more sustainable waste management, and provide an empirical basis for multi-criteria evaluation of the literature.

  17. Finnish Mathematics Teaching from a Reform Perspective: A Video-Based Case-Study Analysis

    Science.gov (United States)

    Andrews, Paul

    2013-01-01

    This article offers a qualitative analysis of videotaped mathematics lessons taught by four teachers in a provincial university city in Finland. My study is framed not only by Finnish success on Programme for International Student Assessment (PISA) but also by the objectives of current mathematics education reform, which are consistent with PISA's…

  18. Economic analysis of the marketing of plantain: a case study of ...

    African Journals Online (AJOL)

    This study concentrated on economic analysis of the marketing of plantain in Uhunmwode and Ovia North East Local Government Areas of Edo State. Six markets, made up of three from each local governmnet were selected because of their high population of plantain marketers and their approximate equal sizes.

  19. Sensitivity analysis by experimental design and metamodelling : case study on simulation in national animal disease control

    NARCIS (Netherlands)

    Vonk Noordegraaf, A.; Nielen, M.; Kleijnen, J.P.C.

    2003-01-01

    Simulation is a frequently applied tool in the discipline of animal health economics. Application of sensitivity analysis, however, is often limited to changing only one factor at a time (OAT designs). In this study, the statistical techniques of Design of Experiments (DOE) and regression

  20. Fuzzy-Set Case Studies

    Science.gov (United States)

    Mikkelsen, Kim Sass

    2017-01-01

    Contemporary case studies rely on verbal arguments and set theory to build or evaluate theoretical claims. While existing procedures excel in the use of qualitative information (information about kind), they ignore quantitative information (information about degree) at central points of the analysis. Effectively, contemporary case studies rely on…

  1. LIDAR data to support coastal erosion analysis: the Conero study case

    Science.gov (United States)

    Calligaro, Simone; Sofia, Giulia; Guarnieri, Alberto; Tarolli, Paolo

    2013-04-01

    In the last decades, the topic of coastal erosion and the derived risk have been subject of a growing interest for public authorities and researchers. Recent major natural events, such as hurricanes, tsunamis, and sea level rising, called the attention of media and society, underlining serious concerns about such problems. In a high-density populated country such as Italy, where tourism is one of the major economic activities, the coastal erosion is really a critical issue. In April 2010, along a reach of the coast of Ventotene Island, two young students tragically died, killed by a rock fall. This event dramatically stressed public authorities about the effectiveness of structural and non-structural measures for the mitigation of such phenomena. It is clear that an improving of the actual knowledge about coastal erosion is needed, especially to monitor such events and to set alert systems. In the last few years, airborne LIDAR technology led to a dramatic increase in terrain information. Airborne LiDAR and Terrestrial Laser Scanner (TLS) derived high-resolution Digital Terrain Models (DTMs) have opened avenues for hydrologic and geomorphologic studies (Tarolli et al., 2009). In general, all the main surface processes signatures are correctly recognized using a DTM with cell sizes of 1 m. Having said that, some sub-meter grid sizes may be more suitable in those situations where the analysis of micro topography related to micro changes due to slope failures is critical for risk assessment, and the Terrestrial Laser Scanner (TLS) has been proven to be a useful tool for such detailed field survey. The acquired elevation data with TLS allow to derive a centimeters high quality DTMs. The possibility to detect in detail the slope failures signatures results in a better understanding and mapping of the erosion susceptibility, and of those areas where slope failures are more likely to happen. In addition, these information can be also considered as the basis to develop

  2. Design and construction strategies for reducing embodied impacts from buildings – Case study analysis

    DEFF Research Database (Denmark)

    Malmqvist, Tove; Nehasilova, Marie; Moncaster, Alice

    2018-01-01

    emissions (EEG) from buildings. The aim of this paper is to identify and provide a collected and comprehensive overview of quantitative reduction potentials of the particular EEG reduction strategies which should be considered by the stakeholders engaged in, and with the capacity to influence the outcome of...... of national energy mixes. Stakeholders therefore have a growing interest in understanding the possibilities for reducing em- bodied impacts in buildings. In the IEA EBC project ‘Annex 57’ a broad call for case studies was launched with the aim to identify design strategies for reducing embodied energy and GHG...

  3. X-ray study of gastric hypokinesia (587 cases analysis) and its clinical significance

    International Nuclear Information System (INIS)

    Cao Zuyi; Chen Xiaodong; Zhang Huilin; Guo Yingfeng; Deng Mingxing

    1999-01-01

    Objective: To study the gastric hypokinesia X-ray findings and its clinical significance. Methods: In 2822 patients with upper barium meal examination and 112 with alimentary tract barium meal examination was determined according to the gastrorrhea, pattern, pyloric reflux, peristalsis and emptying with clinical data, hypokinesia. Results: 562 of 2822 patients suffered from gastric hypokinesia (19.9%) and 25 of 112 patients with alimentary tract barium meal examination suffered from gastric hypokinesia (22.3%). There were 587 cases of functional dyspepsia in total. Conclusion: It's a useful method to find gastric hypokinesia by X-ray examination and it may be helpful for treatment of FD

  4. The shallows: Development of Alibaba in Chinese domestic logistics system : A Case Study Based Analysis

    OpenAIRE

    Liu, Shun

    2015-01-01

    The aim of the research is to critically analyse the influence of Alibaba as 3PL service providers for Chinese businesses needs and Domestic Logistics. Alibaba is the case study selected for discussion here. Mixed research methods are used, the research is a mix of both primary data and secondary data. A primary data collection method has been used where consumers were queried The aim of the research is to critically analyse the influence of Alibaba as 3PL service providers for Chinese busine...

  5. VISUALIZATION AND ANALYSIS OF LIGHT POLLUTION: A CASE STUDY IN HONG KONG

    Directory of Open Access Journals (Sweden)

    B. Wu

    2012-07-01

    Full Text Available The effects of light pollution problems in metropolitan areas are investigated in this study. Areas of Hong Kong are used as the source of three typical study cases. One case represents the regional scale, a second represents the district scale, and a third represents the street scale. Two light pollution parameters, Night Sky Brightness (NSB and Street Light Level (SLL, are the focus of the analyses. Light pollution visualization approaches in relation to the different scales include various light pollution maps. They provide straightforward presentations of the light pollution situations in the study areas. The relationship between light pollution and several social-economic factors such as land use, household income, and types of outdoor lighting in the scale areas given, are examined. Results show that: (1 Land use may be one factor affecting light pollution in the regional scale; (2 A relatively strong correlation exists between light pollution and household income in the district scale; (3 The heaviest light pollution in the street scale is created by spotlights and also the different types of lighting from shops. The impact of the latter is in relation to the shop profile and size.

  6. Visualization and Analysis of Light Pollution: a Case Study in Hong Kong

    Science.gov (United States)

    Wu, B.; Wong, H.

    2012-07-01

    The effects of light pollution problems in metropolitan areas are investigated in this study. Areas of Hong Kong are used as the source of three typical study cases. One case represents the regional scale, a second represents the district scale, and a third represents the street scale. Two light pollution parameters, Night Sky Brightness (NSB) and Street Light Level (SLL), are the focus of the analyses. Light pollution visualization approaches in relation to the different scales include various light pollution maps. They provide straightforward presentations of the light pollution situations in the study areas. The relationship between light pollution and several social-economic factors such as land use, household income, and types of outdoor lighting in the scale areas given, are examined. Results show that: (1) Land use may be one factor affecting light pollution in the regional scale; (2) A relatively strong correlation exists between light pollution and household income in the district scale; (3) The heaviest light pollution in the street scale is created by spotlights and also the different types of lighting from shops. The impact of the latter is in relation to the shop profile and size.

  7. Application of linear and spherical flow analysis techniques to field problems--case studies

    Energy Technology Data Exchange (ETDEWEB)

    Kohlhaas, C.A.; delGiuoice, C.; Abbott, W.A.

    1982-09-01

    Most engineers examine well-test data only with techniques developed for flow in a horizontal cylindrical-radial pattern toward the wellbore. Spherical and linear flow have application in many reservoir situations. Spherical flow has been examined extensively by many authors as an intermediate period between two radial-flow periods for wells which have a short completion interval in thick formations. Linear flow situations develop early in the life of wells which have been fracture-treated: their early linear-flow periods are followed by radial flow. Linear flow may develop late in a well test after a period of early radial flow due to certain configurations of reservoir geometry. Techniques for analyzing spherical and linear flow are summarized here. Data plots which should be prepared and diagnostic features for recognizing and interpreting spherical and linear flow are outlined. These techniques are applied to three example cases to illustrate the methods of analysis and the types of information which can be developed from such analyses and cannot be obtained from the standard Horner-plot analysis.

  8. The multiple imputation method: a case study involving secondary data analysis.

    Science.gov (United States)

    Walani, Salimah R; Cleland, Charles M

    2015-05-01

    To illustrate with the example of a secondary data analysis study the use of the multiple imputation method to replace missing data. Most large public datasets have missing data, which need to be handled by researchers conducting secondary data analysis studies. Multiple imputation is a technique widely used to replace missing values while preserving the sample size and sampling variability of the data. The 2004 National Sample Survey of Registered Nurses. The authors created a model to impute missing values using the chained equation method. They used imputation diagnostics procedures and conducted regression analysis of imputed data to determine the differences between the log hourly wages of internationally educated and US-educated registered nurses. The authors used multiple imputation procedures to replace missing values in a large dataset with 29,059 observations. Five multiple imputed datasets were created. Imputation diagnostics using time series and density plots showed that imputation was successful. The authors also present an example of the use of multiple imputed datasets to conduct regression analysis to answer a substantive research question. Multiple imputation is a powerful technique for imputing missing values in large datasets while preserving the sample size and variance of the data. Even though the chained equation method involves complex statistical computations, recent innovations in software and computation have made it possible for researchers to conduct this technique on large datasets. The authors recommend nurse researchers use multiple imputation methods for handling missing data to improve the statistical power and external validity of their studies.

  9. Environmental hot spot analysis in agricultural life-cycle assessments – three case studies

    Directory of Open Access Journals (Sweden)

    Gerhard Piringer

    2016-06-01

    Full Text Available Present-day agricultural technology is facing the challenge of limiting the environmental impacts of agricultural production – such as greenhouse gas emissions and demand for additional land – while meeting growing demands for agricultural products. Using the well-established method of life-cycle assessment (LCA, potential environmental impacts of agricultural production chains can be quantified and analyzed. This study presents three case studies of how the method can pinpoint environmental hot spots at different levels of agricultural production systems. The first case study centers on the tractor as the key source of transportation and traction in modern agriculture. A common Austrian tractor model was investigated over its life-cycle, using primary data from a manufacturer and measured load profiles for field work. In all but one of the impact categories studied, potential impacts were dominated by the operation phase of the tractor’s life-cycle (mainly due to diesel fuel consumption, with 84.4-99.6% of total impacts. The production phase (raw materials and final assembly caused between 0.4% and 12.1% of impacts, while disposal of the tractor was below 1.9% in all impact categories. The second case study shifts the focus to an entire production chain for a common biogas feedstock, maize silage. System boundaries incorporate the effect of auxiliary materials such as fertilizer and pesticides manufacturing and application. The operation of machinery in the silage production chain was found to be critical to its environmental impact. For the climate change indicator GWP100 (global warming potential, 100-year reference period, emissions from tractor operation accounted for 15 g CO2-eq per kg silage (64% of total GWP100, followed by field emissions during fertilizer (biogas digestate application with 6 g CO2-eq per kg silage (24% of total GWP100. At a larger system scale that includes a silage-fed biogas plant with electricity generated by

  10. Elastic, plastic, fracture analysis of masonry arches: A multi-span bridge case study

    Science.gov (United States)

    Lacidogna, Giuseppe; Accornero, Federico

    2018-01-01

    In this work a comparison is presented between elastic, plastic, and fracture analysis of the monumental arch bridge of Porta Napoli, Taranto (Italy). By means of a FEM model and applying the Mery's Method, the behavior of the curved structure under service loads is verified, while considering the Safe Theorem approach byHeyman, the ultimate carrying capacity of the structure is investigated. Moreover, by using Fracture Mechanics concepts, the damage process which takes place when the conditions assessed through linear elastic analysis are no longer valid, and before the set-in of the conditions established by means of the plastic limit analysis, is numerically analyzed. The study of these transitions returns an accurate and effective whole service life assessment of the Porta Napoli masonry arch bridge.

  11. Performance analysis of clustering techniques over microarray data: A case study

    Science.gov (United States)

    Dash, Rasmita; Misra, Bijan Bihari

    2018-03-01

    Handling big data is one of the major issues in the field of statistical data analysis. In such investigation cluster analysis plays a vital role to deal with the large scale data. There are many clustering techniques with different cluster analysis approach. But which approach suits a particular dataset is difficult to predict. To deal with this problem a grading approach is introduced over many clustering techniques to identify a stable technique. But the grading approach depends on the characteristic of dataset as well as on the validity indices. So a two stage grading approach is implemented. In this study the grading approach is implemented over five clustering techniques like hybrid swarm based clustering (HSC), k-means, partitioning around medoids (PAM), vector quantization (VQ) and agglomerative nesting (AGNES). The experimentation is conducted over five microarray datasets with seven validity indices. The finding of grading approach that a cluster technique is significant is also established by Nemenyi post-hoc hypothetical test.

  12. Promoting Entrepreneurship in Higher Education: Analysis of European Union Documents and Lithuanian Case Study

    Directory of Open Access Journals (Sweden)

    Viktorija Stokaitė

    2013-01-01

    Full Text Available The Chairman of the European Commission J.M Barroso, as the main “Europe 2020” strategic target for the upcoming ten years, indicates the creation of an innovative, stable and integrated economy. Higher education and business communication promotion and synergy are being dedicated as a prior target for all EU and EU member countries to be able to continue increasing employment, productivity, as well as social connections. The research of the enterprise and its stimulation in higher education (using higher education and business collaboration is not deep enough, although the enterprise’s multiple phenomenon were analysed from many perspectives. It is being planned to raise EU’s investments to youth much more compared to other main parts of the budget in 2014-2020. Analysis of European Union documents and Lithuanian case studies was chosen on purpose according to the enterprise’s created added value for European development. Realization, creativity, initiative, motivation, taking risks, planning and reaching personal goals are the main parts of the enterprise. Development of these skills in higher education is becoming very important because of “the advantage of the competitiveness is being determined by country‘s social education therefore the effective usage of human recourses is the most important part seeking to increase stabile economical and social well being.” Research of the EU’s and Lithuania’s national documentation and scientific literature review of entrepreneurship in higher education identifies the current enterprise position in education. According to the analyses of the documentation and the scientific literature review, the enterprise’s evaluation level was appointed. The new beginning of the enterprise in higher education is being started after the research was done and centrepiece’s promotion was critically evaluated in the EU and Lithuania. In October, 2011 the committee of the EU created a new work

  13. Comparative Analysis of Houses Built from Insulating Concrete Formwork - case Study

    Science.gov (United States)

    Mačková, Daniela; Spišáková, Marcela

    2015-11-01

    More and more, people are looking to build and live in different ways. They want houses with a high standard of living and reasonable production and maintenance costs. However, they also want to build a way that does not adversely affect their quality of life. Currently, the using of modern methods of construction (MMC) expands consistently year on year. MMC include prefabricated products made in the factory and also new methods of building that are site-based and they are regarded as a means of achieving higher quality, reducing time spent onsite, increasing safety and overcoming skills shortages in the industry. Aim of this paper is to analyze and compare, trough case study, technical, cost and technological parameters of house built by modern method of construction (from insulating concrete formwork) and by traditional method (from brick system). The subject of case study is house modeled in two variants of insulating concrete formwork and a variant bricks and ceiling system. In conclusion, there is selected optimal method and system for house construction through multicriteria optimization.

  14. User-Centered Design for Interactive Maps: A Case Study in Crime Analysis

    Directory of Open Access Journals (Sweden)

    Robert E. Roth

    2015-02-01

    Full Text Available In this paper, we address the topic of user-centered design (UCD for cartography, GIScience, and visual analytics. Interactive maps are ubiquitous in modern society, yet they often fail to “work” as they could or should. UCD describes the process of ensuring interface success—map-based or otherwise—by gathering input and feedback from target users throughout the design and development of the interface. We contribute to the expanding literature on UCD for interactive maps in two ways. First, we synthesize core concepts on UCD from cartography and related fields, as well as offer new ideas, in order to organize existing frameworks and recommendations regarding the UCD of interactive maps. Second, we report on a case study UCD process for GeoVISTA CrimeViz, an interactive and web-based mapping application supporting visual analytics of criminal activity in space and time. The GeoVISTA CrimeViz concept and interface were improved iteratively by working through a series of user→utility→usability loops in which target users provided input and feedback on needs and designs (user, prompting revisions to the conceptualization and functional requirements of the interface (utility, and ultimately leading to new mockups and prototypes of the interface (usability for additional evaluation by target users (user… and so on. Together, the background review and case study offer guidance for applying UCD to interactive mapping projects, and demonstrate the benefit of including target users throughout design and development.

  15. 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...

  16. Analysis on Variables Affecting the Creation of Tourist Destination Image: Case Study on Domestic Tourists Visiting

    Directory of Open Access Journals (Sweden)

    Khairani

    2010-06-01

    Full Text Available The purpose of this study is to examine the variables that affect the image creation of tourism destinations. This research is a case study on domestic tourists visiting Yogyakarta from 2007 to 2009. This research uses an exploratory and descriptive design, conducted once in one period (cross-sectional. A number of 105 domestic tourists were selected as samples by means of non-probability sampling method and snowball sampling technique. The data were analyzed using reliability and validity tests, frequency distributions, and regression analyses. Results showed that overall image was significantly constructed and affected by cognitive and affective evaluations. Cognitive evaluation was significantly affected by the types of information source from books and movies, while affective evaluation was affected significantly by social-psychological motivations. The research also proves that Yogyakarta has fulfilled the requirements to become a tourist destination; respondents showed positive feelings towards the town and also perceived the town positively.

  17. An analysis of Indonesia’s information security index: a case study in a public university

    Science.gov (United States)

    Yustanti, W.; Qoiriah, A.; Bisma, R.; Prihanto, A.

    2018-01-01

    Ministry of Communication and Informatics of the Republic of Indonesia has issued the regulation number 4-2016 about Information Security Management System (ISMS) for all kind organizations. Public university as a government institution must apply this standard to assure its level of information security has complied ISO 27001:2013. This research is a preliminary study to evaluate the readiness of university IT services (case study in a public university) meets the requirement of ISO 27001:2013 using the Indonesia’s Information Security Index (IISI). There are six parameters used to measure the level of information security, these are the ICT role, governance, risk management, framework, asset management and technology. Each parameter consists of serial questions which must be answered and convert to a numeric value. The result shows the level of readiness and maturity to apply ISO 27001 standard.

  18. Cycle Time Analysis Of Tipping Trailer Frame: A Case Study In A Heavy Equipment Industry

    Directory of Open Access Journals (Sweden)

    Marsudi, Muhammad

    2014-05-01

    Full Text Available A key element with which manufacturing industries should concern themselves in respect of cost and efficiency of operation is the cycle time for preparing their products. A reduction in operational time can result in dramatic improvements in both cost and efficiency. Unfortunately, cycle time problems are sometimes difficult to analyse: there are many factors related to this parameter. This paper presents a cycle time analysis of a tipping trailer frame in a heavy equipment industry. The cycle time analysis, based on the cycle time data collected by a time study, together with the use of an Arena software simulation, is outlined. From the results of this study, it was found that the manufacturing cycle time was 56 hours, and that resources were under-utilised.

  19. Acute kidney injury in cats and dogs: A proportional meta-analysis of case series studies

    Science.gov (United States)

    Legatti, Sabrina Almeida Moreira; Legatti, Emerson; Botan, Andresa Graciutti; Camargo, Samira Esteves Afonso; Agarwal, Arnav; Barretti, Pasqual; Paes, Antônio Carlos

    2018-01-01

    Introduction Risk of mortality in the setting of acute kidney injury (AKI) in cats and dogs remains unclear. Objectives To evaluate the incidence of mortality in cats and dogs with AKI based on etiology (i.e. infectious versus non-infectious; receiving dialysis versus conservative treatment). Materials and methods Ovid Medline, EMBASE, and LILACS were searched up to July 2016. Articles were deemed eligible if they were case series studies evaluating the incidence of all-cause mortality in cats and dogs with AKI, regardless of etiology or the nature of treatment. Results Eighteen case series involving 1,201animalsproved eligible. The pooled proportions for overall mortality were: cats53.1% [95% CI 0.475, 0.586; I2 = 11,9%, p = 0.3352]; dogs 45.0% [95% CI 0.33, 0.58; I2 = 91.5%, P dogs, 19.2% [95% CI 0.134, 0.258; I2 = 37.7%, P = 0.0982]; AKI due non-infectious etiology for cats and dogs, 59.9% [95% CI 0.532, 0.663; I2 = 51.0%, P = 0.0211]. Conclusion Our findings suggest higher rates of overall mortality in cats and dogs with AKI due to non-infectious etiologies relative to infectious etiologies, and showed non-significant differences in terms of higher rates associated with dialysis compared to conservative management. Further investigations regarding optimal time to initiate dialysis and the development of clinical models to prognosticate the course of disease and guide optimal treatment initiation for less severe cases of AKI in cats and dogs is warranted. PMID:29370180

  20. Acute kidney injury in cats and dogs: A proportional meta-analysis of case series studies.

    Science.gov (United States)

    Legatti, Sabrina Almeida Moreira; El Dib, Regina; Legatti, Emerson; Botan, Andresa Graciutti; Camargo, Samira Esteves Afonso; Agarwal, Arnav; Barretti, Pasqual; Paes, Antônio Carlos

    2018-01-01

    Risk of mortality in the setting of acute kidney injury (AKI) in cats and dogs remains unclear. To evaluate the incidence of mortality in cats and dogs with AKI based on etiology (i.e. infectious versus non-infectious; receiving dialysis versus conservative treatment). Ovid Medline, EMBASE, and LILACS were searched up to July 2016. Articles were deemed eligible if they were case series studies evaluating the incidence of all-cause mortality in cats and dogs with AKI, regardless of etiology or the nature of treatment. Eighteen case series involving 1,201animalsproved eligible. The pooled proportions for overall mortality were: cats53.1% [95% CI 0.475, 0.586; I2 = 11,9%, p = 0.3352]; dogs 45.0% [95% CI 0.33, 0.58; I2 = 91.5%, P cats and dogs, 19.2% [95% CI 0.134, 0.258; I2 = 37.7%, P = 0.0982]; AKI due non-infectious etiology for cats and dogs, 59.9% [95% CI 0.532, 0.663; I2 = 51.0%, P = 0.0211]. Our findings suggest higher rates of overall mortality in cats and dogs with AKI due to non-infectious etiologies relative to infectious etiologies, and showed non-significant differences in terms of higher rates associated with dialysis compared to conservative management. Further investigations regarding optimal time to initiate dialysis and the development of clinical models to prognosticate the course of disease and guide optimal treatment initiation for less severe cases of AKI in cats and dogs is warranted.

  1. Finnish mathematics teaching from a reform perspective : A video-based case study analysis

    OpenAIRE

    Andrews, Paul

    2013-01-01

    This article offers a qualitative analysis of videotaped mathematics lessons taught by fourteachers in a provincial university city in Finland. My study is framed not only by Finnishsuccess on Programme for International Student Assessment (PISA) but also by theobjectives of current mathematics education reform, which are consistent with PISA’sgoals of measuring mathematical literacy. The analyses indicated that conceptual understandingand procedural fluency were addressed by all four teacher...

  2. Time Series Analysis OF SAR Image Fractal Maps: The Somma-Vesuvio Volcanic Complex Case Study

    Science.gov (United States)

    Pepe, Antonio; De Luca, Claudio; Di Martino, Gerardo; Iodice, Antonio; Manzo, Mariarosaria; Pepe, Susi; Riccio, Daniele; Ruello, Giuseppe; Sansosti, Eugenio; Zinno, Ivana

    2016-04-01

    The fractal dimension is a significant geophysical parameter describing natural surfaces representing the distribution of the roughness over different spatial scale; in case of volcanic structures, it has been related to the specific nature of materials and to the effects of active geodynamic processes. In this work, we present the analysis of the temporal behavior of the fractal dimension estimates generated from multi-pass SAR images relevant to the Somma-Vesuvio volcanic complex (South Italy). To this aim, we consider a Cosmo-SkyMed data-set of 42 stripmap images acquired from ascending orbits between October 2009 and December 2012. Starting from these images, we generate a three-dimensional stack composed by the corresponding fractal maps (ordered according to the acquisition dates), after a proper co-registration. The time-series of the pixel-by-pixel estimated fractal dimension values show that, over invariant natural areas, the fractal dimension values do not reveal significant changes; on the contrary, over urban areas, it correctly assumes values outside the natural surfaces fractality range and show strong fluctuations. As a final result of our analysis, we generate a fractal map that includes only the areas where the fractal dimension is considered reliable and stable (i.e., whose standard deviation computed over the time series is reasonably small). The so-obtained fractal dimension map is then used to identify areas that are homogeneous from a fractal viewpoint. Indeed, the analysis of this map reveals the presence of two distinctive landscape units corresponding to the Mt. Vesuvio and Gran Cono. The comparison with the (simplified) geological map clearly shows the presence in these two areas of volcanic products of different age. The presented fractal dimension map analysis demonstrates the ability to get a figure about the evolution degree of the monitored volcanic edifice and can be profitably extended in the future to other volcanic systems with

  3. Human Error Analysis in a Permit to Work System: A Case Study in a Chemical Plant.

    Science.gov (United States)

    Jahangiri, Mehdi; Hoboubi, Naser; Rostamabadi, Akbar; Keshavarzi, Sareh; Hosseini, Ali Akbar

    2016-03-01

    A permit to work (PTW) is a formal written system to control certain types of work which are identified as potentially hazardous. However, human error in PTW processes can lead to an accident. This cross-sectional, descriptive study was conducted to estimate the probability of human errors in PTW processes in a chemical plant in Iran. In the first stage, through interviewing the personnel and studying the procedure in the plant, the PTW process was analyzed using the hierarchical task analysis technique. In doing so, PTW was considered as a goal and detailed tasks to achieve the goal were analyzed. In the next step, the standardized plant analysis risk-human (SPAR-H) reliability analysis method was applied for estimation of human error probability. The mean probability of human error in the PTW system was estimated to be 0.11. The highest probability of human error in the PTW process was related to flammable gas testing (50.7%). The SPAR-H method applied in this study could analyze and quantify the potential human errors and extract the required measures for reducing the error probabilities in PTW system. Some suggestions to reduce the likelihood of errors, especially in the field of modifying the performance shaping factors and dependencies among tasks are provided.

  4. The role of ethnomathematics in West Java (a preliminary analysis of case study in Cipatujah)

    Science.gov (United States)

    Amor Kusuma, Dianne; Dewanto, Stanley P.; Nurani Ruchjana, Budi; Setiawan Abdullah, Atje

    2017-10-01

    Indonesia is a multicultural country of which people usually do anything influenced by their culture. The culture contain of many aspects, one of them is ethnomathematics. It is a study about the connection between culture and mathematics concepts. It also reveals mathematical practices of day life. These mathematical practices could be seen at Cipatujah, West Java, Indonesia. It has several ethnics which implemented of ethnomathematics in their life, for example they implement traditional mathematical concept in the way they determine the time to head seaward for fishing, and the way they construct their houses. The exploration will describe about how deep is the role of ethnomathematics in Cipatujah and state any problem found according to the exploration result. The objectives of this study is to show that ethnomathematics holds an important role in our day life, with the case study of primary school students and for the people of Cipatujah. The method which implemented in this study is exploratory. The result is the people of Cipatujah have been implemented ethnomathematics in their life for many years and believe that ethnomathematics is part of their life, but the teachers of primary school there have not implemented ethnomathematics approach yet in learning process of mathematics. Conclusion of this study is ethnomathematics as the root of culture life in West Java.

  5. Historic Surface Rupture Informing Probabilistic Fault Displacement Analysis: New Zealand Case Studies

    Science.gov (United States)

    Villamor, P.; Litchfield, N. J.; Van Dissen, R. J.; Langridge, R.; Berryman, K. R.; Baize, S.

    2016-12-01

    Surface rupture associated with the 2010 Mw7.1 Darfield Earthquake (South Island, New Zealand) was extremely well documented, thanks to an immediate field mapping response and the acquisition of LiDAR data within days of the event. With respect to informing Probabilistic Fault Displacement Analysis (PFDHA) the main insights and outcomes from this rupture through Quaternary gravel are: 1) significant distributed deformation either side of the main trace (30 to 300 m wide deformation zone) and how the deformation is distributed away from the main trace; 2) a thorough analysis of uncertainty of the displacement measures obtained using the LIDAR data and repeated measurements from several scientists; and 3) the short surface rupture length for the reported magnitude, resulting from complex fault rupture with 5-6 reverse and strike-slip strands, most of which had no surface rupture. While the 2010 event is extremely well documented and will be an excellent case to add to the Surface Rupture during Earthquakes database (SURE), other NZ historical earthquakes that are not so well documented, but can provide important information for PFDHA. New Zealand has experienced about 10 historical surface fault ruptures since 1848, comprising ruptures on strike-slip, reverse and normal faults. Mw associated with these ruptures ranges between 6.3 and 8.1. From these ruptures we observed that the surface expression of deformation can be influenced by: fault maturity; the type of Quaternary sedimentary cover; fault history (e.g., influence of inversion tectonics, flexural slip); fault complexity; and primary versus secondary rupture. Other recent >Mw 6.6 earthquakes post-2010 that did not rupture the ground surface have been documented with InSAR and can inform Mw thresholds for surface fault rupture. It will be important to capture all this information and that of similar events worldwide to inform the SURE database and ultimately PFDHA.

  6. Energy-water analysis of the 10-year WECC transmission planning study cases.

    Energy Technology Data Exchange (ETDEWEB)

    Tidwell, Vincent Carroll; Passell, Howard David; Castillo, Cesar; Moreland, Barbara

    2011-11-01

    modules for calculating water withdrawal and consumption for current and planned electric power generation; projected water demand from competing use sectors; and, surface and groundwater availability. WECC's long range planning is organized according to two target planning horizons, a 10-year and a 20-year. This study supports WECC in the 10-year planning endeavor. In this case the water implications associated with four of WECC's alternative future study cases (described below) are calculated and reported. In future phases of planning we will work with WECC to craft study cases that aim to reduce the thermoelectric footprint of the interconnection and/or limit production in the most water stressed regions of the West.

  7. Morphometric analysis in basaltic Terrain of Central India using GIS techniques: a case study

    Science.gov (United States)

    Sahu, Nisha; Obi Reddy, G. P.; Kumar, Nirmal; Nagaraju, M. S. S.; Srivastava, Rajeev; Singh, S. K.

    2017-09-01

    Morphometric analysis is significant for investigation and management of the watershed. This study depicts the morphometric analysis of Miniwada Watershed in Nagpur district, Maharashtra, Central India using Geographic Information System (GIS) techniques, which has been carried out through measurement of various aspects like linear, aerial and relief aspects of watershed. The drainage network of the watershed was generated from Cartosat-I DEM (10 m) using ESRI Software ArcGIS (ver.10.2). The analysis reveals that drainage pattern is dendritic and the stream order in the watershed varies from 1 to 4. The total number of stream segments of all orders counted as 37, out of which the majority of orders (70.27 %) was covered by 1st order streams and 4th order stream segments covers only 2.70 %. The bifurcation ratio reflects the geological and tectonic characteristics of the watershed and estimated as 3.08. The drainage density of the watershed is 3.63 km/sq km and it indicates the closeness of spacing of channels. The systematic analysis of various parameters in GIS helps in better understanding the soil resources distribution, watersheds prioritization, planning and management.

  8. Geospatial Analysis Using Remote Sensing Images: Case Studies of Zonguldak Test Field

    Science.gov (United States)

    Bayık, Çağlar; Topan, Hüseyin; Özendi, Mustafa; Oruç, Murat; Cam, Ali; Abdikan, Saygın

    2016-06-01

    Inclined topographies are one of the most challenging problems for geospatial analysis of air-borne and space-borne imageries. However, flat areas are mostly misleading to exhibit the real performance. For this reason, researchers generally require a study area which includes mountainous topography and various land cover and land use types. Zonguldak and its vicinity is a very suitable test site for performance investigation of remote sensing systems due to the fact that it contains different land use types such as dense forest, river, sea, urban area; different structures such as open pit mining operations, thermal power plant; and its mountainous structure. In this paper, we reviewed more than 120 proceeding papers and journal articles about geospatial analysis that are performed on the test field of Zonguldak and its surroundings. Geospatial analysis performed with imageries include elimination of systematic geometric errors, 2/3D georeferencing accuracy assessment, DEM and DSM generation and validation, ortho-image production, evaluation of information content, image classification, automatic feature extraction and object recognition, pan-sharpening, land use and land cover change analysis and deformation monitoring. In these applications many optical satellite images are used i.e. ASTER, Bilsat-1, IKONOS, IRS-1C, KOMPSAT-1, KVR-1000, Landsat-3-5-7, Orbview-3, QuickBird, Pleiades, SPOT-5, TK-350, RADARSAT-1, WorldView-1-2; as well as radar data i.e. JERS-1, Envisat ASAR, TerraSAR-X, ALOS PALSAR and SRTM. These studies are performed by Departments of Geomatics Engineering at Bülent Ecevit University, at İstanbul Technical University, at Yıldız Technical University, and Institute of Photogrammetry and GeoInformation at Leibniz University Hannover. These studies are financially supported by TÜBİTAK (Turkey), the Universities, ESA, Airbus DS, ERSDAC (Japan) and Jülich Research Centre (Germany).

  9. Epidemiological study of congenital heart defects in children and adolescents: analysis of 4,538 cases

    Directory of Open Access Journals (Sweden)

    Nelson Itiro Miyague

    2003-03-01

    Full Text Available OBJECTIVE: To analyze the frequency and prevalence of congenital heart defects in a tertiary care center for children with heart diseases. METHODS: We carried out an epidemiological assessment of the first medical visit of 4,538 children in a pediatric hospital from January 1995 to December 1997. All patients with congenital heart defects had their diagnoses confirmed at least on echocardiography. The frequency and prevalence of the anomalies were computed according to the classification of sequential analysis. Age, weight, and sex were compared between the groups of healthy individuals and those with congenital heart defects after distribution according to the age group. RESULTS: Of all the children assessed, 2,017 (44.4% were diagnosed with congenital heart disease, 201 (4.4% with acquired heart disease, 52 (1.2% with arrhythmias, and 2,268 (50% were healthy children. Congenital heart diseases predominated in neonates and infants, corresponding to 71.5% of the cases. Weight and age were significantly lower in children with congenital heart defects. Ventricular septal defect was the most frequent acyanotic anomaly, and tetralogy of Fallot was the most frequent cyanotic anomaly. CONCLUSION: Children with congenital heart defects are mainly referred during the neonatal period and infancy with impairment in gaining weight. Ventricular septal defect is the most frequent heart defect.

  10. Analysis of a Multilevel Diagnosis Decision Support System and Its Implications: A Case Study

    Science.gov (United States)

    Rodríguez-González, Alejandro; Torres-Niño, Javier; Mayer, Miguel A.; Alor-Hernandez, Giner; Wilkinson, Mark D.

    2012-01-01

    Medical diagnosis can be performed in an automatic way with the use of computer-based systems or algorithms. Such systems are usually called diagnostic decision support systems (DDSSs) or medical diagnosis systems (MDSs). An evaluation of the performance of a DDSS called ML-DDSS has been performed in this paper. The methodology is based on clinical case resolution performed by physicians which is then used to evaluate the behavior of ML-DDSS. This methodology allows the calculation of values for several well-known metrics such as precision, recall, accuracy, specificity, and Matthews correlation coefficient (MCC). Analysis of the behavior of ML-DDSS reveals interesting results about the behavior of the system and of the physicians who took part in the evaluation process. Global results show how the ML-DDSS system would have significant utility if used in medical practice. The MCC metric reveals an improvement of about 30% in comparison with the experts, and with respect to sensitivity the system returns better results than the experts. PMID:23320043

  11. Analysis of a Multilevel Diagnosis Decision Support System and Its Implications: A Case Study

    Directory of Open Access Journals (Sweden)

    Alejandro Rodríguez-González

    2012-01-01

    Full Text Available Medical diagnosis can be performed in an automatic way with the use of computer-based systems or algorithms. Such systems are usually called diagnostic decision support systems (DDSSs or medical diagnosis systems (MDSs. An evaluation of the performance of a DDSS called ML-DDSS has been performed in this paper. The methodology is based on clinical case resolution performed by physicians which is then used to evaluate the behavior of ML-DDSS. This methodology allows the calculation of values for several well-known metrics such as precision, recall, accuracy, specificity, and Matthews correlation coefficient (MCC. Analysis of the behavior of ML-DDSS reveals interesting results about the behavior of the system and of the physicians who took part in the evaluation process. Global results show how the ML-DDSS system would have significant utility if used in medical practice. The MCC metric reveals an improvement of about 30% in comparison with the experts, and with respect to sensitivity the system returns better results than the experts.

  12. WHAT IS THE ORGANIZED CRIME? DELIMITATION OF THE CRIMINAL ASSOCIATIVE PHENOMENON, THROUGH THE ANALYSIS OF CINEMATOGRAPHICS STUDY CASES

    Directory of Open Access Journals (Sweden)

    DANIEL SOTO MUÑOZ

    2017-09-01

    Full Text Available This article delimits the borders de of the associative crime, by using as the main study case the Tarantino’s film “Pulp Fiction” (1994. By means of the analysis and cinematographic interpretation, the main characteristics that shape the “organized crime” are described and illustrated: the existence of a solid organization, the criminal profitable ends and the employment of violence as a criminal method.

  13. Planning and Implementing Total Quality Management in the Royal Australian Air Force: A Multiple Case Study Analysis

    Science.gov (United States)

    1990-09-01

    Make final presentations of PDCA story Evaluate team methods Evaluate project results Recommend follow-up activity Celebrate PDCA cycle completion...Ohio .0 A, N~vdfrpheme^ 1 (0ub~ Uhdo AFIT/GLM/LSM/90S-40 PLANNING AND IMPLEMENTING TOTAL QUALITY MANAGEMENT IN THE ROYAL AUSTRALIAN AIR FORCE: A MULTIPLE...Special AFIT/GLM/LSM/90S-40 PLANNING AND IMPLEMENTING TOTAL QUALITY MANAGEMENT IN THE ROYAL AUSTRALIAN AIR FORCE: A MULTIPLE CASE STUDY ANALYSIS THESIS

  14. Can statistic adjustment of OR minimize the potential confounding bias for meta-analysis of case-control study? A secondary data analysis.

    Science.gov (United States)

    Liu, Tianyi; Nie, Xiaolu; Wu, Zehao; Zhang, Ying; Feng, Guoshuang; Cai, Siyu; Lv, Yaqi; Peng, Xiaoxia

    2017-12-29

    Different confounder adjustment strategies were used to estimate odds ratios (ORs) in case-control study, i.e. how many confounders original studies adjusted and what the variables are. This secondary data analysis is aimed to detect whether there are potential biases caused by difference of confounding factor adjustment strategies in case-control study, and whether such bias would impact the summary effect size of meta-analysis. We included all meta-analyses that focused on the association between breast cancer and passive smoking among non-smoking women, as well as each original case-control studies included in these meta-analyses. The relative deviations (RDs) of each original study were calculated to detect how magnitude the adjustment would impact the estimation of ORs, compared with crude ORs. At the same time, a scatter diagram was sketched to describe the distribution of adjusted ORs with different number of adjusted confounders. Substantial inconsistency existed in meta-analysis of case-control studies, which would influence the precision of the summary effect size. First, mixed unadjusted and adjusted ORs were used to combine individual OR in majority of meta-analysis. Second, original studies with different adjustment strategies of confounders were combined, i.e. the number of adjusted confounders and different factors being adjusted in each original study. Third, adjustment did not make the effect size of original studies trend to constringency, which suggested that model fitting might have failed to correct the systematic error caused by confounding. The heterogeneity of confounder adjustment strategies in case-control studies may lead to further bias for summary effect size in meta-analyses, especially for weak or medium associations so that the direction of causal inference would be even reversed. Therefore, further methodological researches are needed, referring to the assessment of confounder adjustment strategies, as well as how to take this kind

  15. Integrating Levels of Analysis in Systems and Cognitive Neurosciences: Selective Attention as a Case Study.

    Science.gov (United States)

    Itthipuripat, Sirawaj; Serences, John T

    2016-06-01

    Neuroscience is inherently interdisciplinary, rapidly expanding beyond its roots in biological sciences to many areas of the social and physical sciences. This expansion has led to more sophisticated ways of thinking about the links between brains and behavior and has inspired the development of increasingly advanced tools to characterize the activity of large populations of neurons. However, along with these advances comes a heightened risk of fostering confusion unless efforts are made to better integrate findings across different model systems and to develop a better understanding about how different measurement techniques provide mutually constraining information. Here we use selective visuospatial attention as a case study to highlight the importance of these issues, and we suggest that exploiting multiple measures can better constrain models that relate neural activity to animal behavior. © The Author(s) 2015.

  16. [CONTRIBUTION STUDY TO THE EPIDEMIOLOGY OF HELICOBACTERPYLORI IN PERU: ANALYSIS OF 3005 CASES

    Science.gov (United States)

    Ramírez Ramos, Alberto; H Gilman, Robert; Recavarren Arce, Sixto; Watanabe Yamamoto, José; Miyagui, Juan; León Barúa, Raúl; Rodríguez Ulloa, Carlos; Spira, William; Arias Stella, Javier; Chinga Alayo, Erick

    1999-01-01

    Compiling our observations from the last 15 years in regard to the epidemiology of Helicobacter pylori in Perú, we have analized 3005 cases. Studying and comparing the rates of infection among japanese inmigrants living in Perú for more than 10 years, niseis, japanese visitors and peruvians, we found similar rates. According to these results it seems that at least in japaneses there is not any genetic predisposition to acquire the infection. Studying peruvians of different socioeconomic levels, we observed similar rates of infection with the exception of women of high socioeconomic level. It seems that the last group of people is not exposed to the different mechanisms of infection. We found similar rates of infection in patients of low socioeconomic level living in the coast, sierra and jungle. Our studies in children showed that the infection is acquired during early childhood. Therefore in Perú we have not observed an ascending rate of infection according to age as has been described in industrialized countries. Analizing water from 48 sources we found Helicobacter pylori in 24 samples, 20 of them were taken from the municipal source of water. Water seems to be an important vehicle of infection, according to our studies, in children drinking water from different sources.

  17. Application of Google-based Data for Travel Time Analysis: Kaunas City Case Study

    Directory of Open Access Journals (Sweden)

    Vytautas Dumbliauskas

    2017-12-01

    Full Text Available Recently, new traffic data sources have emerged raising new challenges and opportunities when applying novel methodologies. The purpose of this research is to analyse car travel time data collected from smartphones by Google Company. Geographic information system (GIS tools and Python programming language were employed in this study to establish the initial framework as well as to automatically extract, analyse, and visualize data. The analysis resulted in the calculation of travel time fluctuation during the day, calculation of travel time variability and estimation of origin-destination (OD skim matrices. Furthermore, we accomplished the accessibility analysis and provided recommendations for further research.

  18. Trend-surface analysis of morphometric parameters: A case study in southeastern Brazil

    Science.gov (United States)

    Grohmann, Carlos Henrique

    2005-10-01

    Trend-surface analysis was carried out on data from morphometric parameters isobase and hydraulic gradient. The study area, located in the eastern border of Quadrilátero Ferrífero, southeastern Brazil, presents four main geomorphological units, one characterized by fluvial dissection, two of mountainous relief, with a scarp of hundreds of meters of fall between them, and a flat plateau in the central portion of the fluvially dissected terrains. Morphometric maps were evaluated in GRASS-GIS and statistics were made on R statistical language, using the spatial package. Analysis of variance (ANOVA) was made to test the significance of each surface and the significance of increasing polynomial degree. The best results were achieved with sixth-order surface for isobase and second-order surface for hydraulic gradient. Shape and orientation of residual maps contours for selected trends were compared with structures inferred from several morphometric maps, and a good correlation is present.

  19. Case study on the use of PSA methods: Human reliability analysis

    International Nuclear Information System (INIS)

    1991-04-01

    The overall objective of treating human reliability in a probabilistic safety analysis is to ensure that the key human interactions of typical crews are accurately and systematically incorporated into the study in a traceable manner. An additional objective is to make the human reliability analysis (HRA) as realistic as possible, taking into account the emergency procedures, the man-machine interface, the focus of training process, and the knowledge and experience of the crews. Section 3 of the paper describes an overview of this analytical process which leads to three more detailed example problems described in Section 4. Section 5 discusses a peer review process. References are presented that are useful in performing HRAs. In addition appendices are provided for definitions, selected data and a generic list of performance shaping factors. 35 refs, figs and tabs

  20. Analysis of manual material handling activity to increase work productivity (Case study: manufacturing company

    Directory of Open Access Journals (Sweden)

    Suryoputro Muhammad Ragil

    2018-01-01

    Full Text Available Manual material handling is one of work activities that have an effect on the physical aspect of workers in manufacturing industry, it is necessary to do the analysis of the risks from such activities. Analysis was performed on worker when performing manual lifting activity and when using two tools (Automatic Handlift and Manual Handlift. In addition to analyse in ergonomics aspect, time study analysis and productivity measurement were carried out to determine the effects of the equipment. Nordic Body Map (NBM questionnaire on worker using Automatic Handlift showed declining level of musculoskeletal disorders by 22%. REBA method obtained score of 10 and was declined to 4 after using these tool. The results of MPL method showed declining of Fc value from 4756.37 N to 1346.56 N. The results of RWL method showed declining of LI value (Lifting Index origin and destination from 1.84 and 1.18 to 1.12 and 0.89 respectively. As for worker using Manual Handlift, NBM questionnaire result shows declining level of musculoskeletal disorders by 57%. REBA method obtained scores of 8 and was reduced to 5. For MPL methode result, the Fc value is 4906.99 N and reduced to 2047.88 N. RWL method results showed declining of LI value (Lifting Index origin and destination from 1.02 and 0.67 to 0.74 and 0.58. The results of time study analysis showed declining of Standard Time when use the two tools and make the increasing productivity of 9% by worker using Automatic Hadlift and 4% by worker using Manual Handlift.

  1. A case study for large-scale human microbiome analysis using JCVI's metagenomics reports (METAREP.

    Directory of Open Access Journals (Sweden)

    Johannes Goll

    Full Text Available As metagenomic studies continue to increase in their number, sequence volume and complexity, the scalability of biological analysis frameworks has become a rate-limiting factor to meaningful data interpretation. To address this issue, we have developed JCVI Metagenomics Reports (METAREP as an open source tool to query, browse, and compare extremely large volumes of metagenomic annotations. Here we present improvements to this software including the implementation of a dynamic weighting of taxonomic and functional annotation, support for distributed searches, advanced clustering routines, and integration of additional annotation input formats. The utility of these improvements to data interpretation are demonstrated through the application of multiple comparative analysis strategies to shotgun metagenomic data produced by the National Institutes of Health Roadmap for Biomedical Research Human Microbiome Project (HMP (http://nihroadmap.nih.gov. Specifically, the scalability of the dynamic weighting feature is evaluated and established by its application to the analysis of over 400 million weighted gene annotations derived from 14 billion short reads as predicted by the HMP Unified Metabolic Analysis Network (HUMAnN pipeline. Further, the capacity of METAREP to facilitate the identification and simultaneous comparison of taxonomic and functional annotations including biological pathway and individual enzyme abundances from hundreds of community samples is demonstrated by providing scenarios that describe how these data can be mined to answer biological questions related to the human microbiome. These strategies provide users with a reference of how to conduct similar large-scale metagenomic analyses using METAREP with their own sequence data, while in this study they reveal insights into the nature and extent of variation in taxonomic and functional profiles across body habitats and individuals. Over one thousand HMP WGS datasets and the latest

  2. Dopa-Responsive Dystonia and gait analysis: A case study of levodopa therapeutic effects.

    Science.gov (United States)

    Rebour, Rémi; Delporte, Ludovic; Revol, Patrice; Arsenault, Lisette; Mizuno, Katsuhiro; Broussolle, Emmanuel; Luauté, Jacques; Rossetti, Yves

    2015-06-01

    Patients suffering Dopa-Responsive Dystonia present dystonia, abnormal postural balance and gait impairment. Treatment with levodopa typically improves these three symptoms. The present study provides an extensive analysis of gait and posture in a patient with Dopa-Responsive Dystonia, prior to and during levodopa therapy. The patient was assessed with the Unified Dystonia Rating Scale, underwent motion analysis with an optoelectronic system and postural analysis with force plates. This study provides a detailed quantification of gait parameters in a Dopa-Responsive Dystonia patient. Prior to treatment, mean walking speed was severely reduced, gait cadence and step length were decreased and stride width was increased. Right lower limb and pelvis showed kinematic defects, trunk and Centre of Mass were backwards. During levodopa therapy, the walking speed was doubled, gait cadence and step length were increased and stride width was reduced. Nearly all kinematic parameters of lower limbs were significantly improved. The patient's Centre of Mass during gait and Centre of pressure in static position both shifted forward. Levodopa dramatically decreased dystonia and improved spatio-temporal, kinematic and posture parameters. Our main pathophysiological hypothesis is that trunk tilt and its consequences on the Centre of Mass position have a pivotal influence on gait and balance, explaining both the initial impairments and the therapeutic effects. Gait analysis proves to be an effective tool to understand the pathophysiology of this patient, the therapeutic effects and mild residual gait defects in order to plan further rehabilitation strategy for this DRD patient. We propose that it will also prove to be useful for the exploration of other dystonic patients. Copyright © 2014 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.

  3. Vitamin E Intake and Risk of Renal Cell Carcinoma: A Meta-Analysis of 7 Case-Control Studies.

    Science.gov (United States)

    Shang, Yonggang; Yi, Shanhong; Cui, Dong; Han, Guangwei; Liu, Chengcheng

    2015-07-01

    Vitamin E intake may reduce the risk of renal cell carcinoma, but the results were inconsistent. Hence, we conducted a meta-analysis to assess the association between dietary vitamin E intake and the risk of renal cell carcinoma. We searched PubMed to identify the relevant case-control studies up to June 2014. Reference lists of retrieved articles were also reviewed. Odds ratios and corresponding 95% confidence intervals were used to estimate the association between dietary vitamin E intake and the risk of renal cell carcinoma. We identified 7 case-control studies regarding dietary vitamin E intake and risk of renal cell carcinoma, involving 5789 cases and 14866 controls. The odds ratio of renal cell carcinoma for the highest compared with the lowest dietary vitamin E intake was 0.75 (95% confidence interval: 0.59-0.91), and heterogeneity was observed across studies. The association between dietary vitamin E intake and the risk of renal cell carcinoma was not significantly differed by gender, but this association were inconsistent in the North American and European populations. Our study provided a evidence that there was a significant inverse association of dietary vitamin E intake with risk of renal cell carcinoma. However, this finding was based on the case-control studies, more well-designed cohort studies are needed. Copyright © 2015 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.

  4. Exposure to benzene in a pooled analysis of petroleum industry case-control studies.

    Science.gov (United States)

    Glass, D C; Schnatter, A R; Tang, G; Armstrong, T W; Rushton, L

    2017-11-01

    Cases of lymphohematopoietic cancer from three petroleum industry cohorts, matched to controls from the respective cohort, were pooled into single study. Average benzene exposure was quantitatively estimated in ppm for each job based on measured data from the relevant country, adjusted for the specific time period, site and job exposure characteristics and the certainty of the exposure estimate scored. The probability of dermal exposure and of peak exposure was also assessed. Before risk was examined, an exposure estimate comparison and rationalisation exercise was performed across the studies to ensure accuracy and consistency of approach. This article evaluates the final exposure estimates and their use in the risk assessments. Overall benzene exposure estimates were low: 90% of participants accumulated less than 20 ppm-years. Mean cumulative exposure was estimated as 5.15 ppm-years, mean duration was 22 years, and mean exposure intensity was 0.2 ppm. 46% of participants were allocated a peak exposure (>3 ppm at least weekly). 40% of participants had a high probability of dermal exposure (based on the relative probability of at least weekly exposure). There were differences in mean intensity of exposure, probability of peak, and/or dermal exposure associated with job category, job site, and decade of exposure. Terminal Operators handling benzene-containing products were the most highly exposed group, followed by Tanker Drivers carrying gasoline. Exposures were higher around 1940-1950 and lower in more recent decades. Overall confidence in the exposure estimates was highest for recently held jobs and for white-collar jobs. We used sensitivity analyses, which included and excluded case-sets on the basis of exposure certainty scores, to inform the risk assessment. The above analyses demonstrated that the different patterns of exposure across the three studies are largely attributable to differences in jobs, site types, and time frames rather than study. This

  5. Examining the Correspondence between Self-Regulated Learning and Academic Achievement: A Case Study Analysis

    Directory of Open Access Journals (Sweden)

    Timothy J. Cleary

    2013-01-01

    Full Text Available Four high school students received 11 weeks of a self-regulated learning (SRL intervention, called the Self-Regulation Empowerment Program (SREP, to improve their classroom-based biology exam scores, SRL, and motivated behaviors. This mixed model case study examined the correspondence between shifts in students’ strategic, regulated behaviors with their performance on classroom-based biology tests. The authors used traditional SRL assessment tools in a pretest-posttest fashion (e.g., self-report questionnaires, teaching rating scales and gathered SRL data during the intervention using field note observations and contextualized structured interviews. This multidimensional assessment approach was used to establish convergence among the assessment tools and to facilitate interpretation of trends in students’ biology test performance relative to their SRL processes. Key themes in this study included the following: (a the close correspondence between changes in students SRL, biology exam performance, and SREP attendance; (b individual variability in student performance, SRL behaviors, and beliefs in response to SREP; and (c the importance of using a multi-dimensional assessment approach in SRL intervention research. Furthermore, this study provided additional support for the potential effectiveness of SREP in academic contexts.

  6. Exergy analysis of wine production: Red wine production process as a case study

    International Nuclear Information System (INIS)

    Genc, Mahmut; Genc, Seda; Goksungur, Yekta

    2017-01-01

    Highlights: • Red wine production process was studied thermodynamically by exergy analysis method. • The first study on exergetic analysis of a red wine production process. • Energetic and exergetic efficiencies are calculated as 57.2 and 41.8%, respectively. • Cumulative exergy loss is computed as 2692.51 kW for 1 kg/s grape. • Specific exergy loss is found as 5080.20 kW/kg wine. - Abstract: This paper performs exergy analysis of a red wine production line and defines the exergy destruction rates to assess the system performance in terms of sustainability. A model study with necessary data is chosen for the calculations. The total exergy destruction rate of the overall system was determined to be 344.08 kW while the greatest destruction rate of the exergy in the whole system occurred in the open fermenter (333.6 kW). The system thermal efficiency was obtained to be 57.2% while the exergy efficiency was calculated as 41.8%. The total exergy destruction rate of the overall system increases with the increase both in the grape flow rate and the reference temperature when the reference pressure is assumed as 101.325 kPa. Furthermore, the chemical exergy of streams was found much higher than the physical exergy for each stream. The exergy results were illustrated through the Grassmann diagram. Furthermore, cumulative exergy loss and specific exergy loss values were determined as 2692.51 kW/1 kg/s grape processed and 5080.20 kW/kg wine, respectively.

  7. Analysis of portfolio optimization with lot of stocks amount constraint: case study index LQ45

    Science.gov (United States)

    Chin, Liem; Chendra, Erwinna; Sukmana, Agus

    2018-01-01

    To form an optimum portfolio (in the sense of minimizing risk and / or maximizing return), the commonly used model is the mean-variance model of Markowitz. However, there is no amount of lots of stocks constraint. And, retail investors in Indonesia cannot do short selling. So, in this study we will develop an existing model by adding an amount of lot of stocks and short-selling constraints to get the minimum risk of portfolio with and without any target return. We will analyse the stocks listed in the LQ45 index based on the stock market capitalization. To perform this analysis, we will use Solver that available in Microsoft Excel.

  8. Analysis of sea use landscape pattern based on GIS: a case study in Huludao, China.

    Science.gov (United States)

    Suo, Anning; Wang, Chen; Zhang, Minghui

    2016-01-01

    This study aims to analyse sea use landscape patterns on a regional scale based on methods of landscape ecology integrated with sea use spatial characteristics. Several landscape-level analysis indices, such as the dominance index, complex index, intensivity index, diversity index and sea congruency index, were established using Geographic Information System (GIS) and applied in Huludao, China. The results indicated that sea use landscape analysis indices, which were created based on the characteristics of sea use spatial patterns using GIS, are suitable to quantitatively describe the landscape patterns of sea use. They are operable tools for the landscape analysis of sea use. The sea use landscape in Huludao was dominated by fishing use with a landscape dominance index of 0.724. The sea use landscape is a complex mosaic with high diversity and plenty of fishing areas, as shown by the landscape complex index of 27.21 and the landscape diversity index of 1.25. Most sea use patches correspond to the marine functional zonation plan and the sea use congruency index is 0.89 in the fishing zone and 0.92 in the transportation zone.

  9. Analysis of Land-Use Emergy Indicators Based on Urban Metabolism: A Case Study for Beijing

    Directory of Open Access Journals (Sweden)

    Qing Huang

    2015-06-01

    Full Text Available The correlation of urban metabolism and changes in land use is an important issue in urban ecology, but recent research lacks consideration of the mechanisms and interactions between them. In this research, we did an emergy analysis of the flows of materials, energy, and capital within the socioeconomic system of Beijing. We calculated emergy-based evaluation indices of urban metabolism and land use change, to analyze the relationship between urban metabolism and land use by correlation analysis and regression analysis. Results indicate that the socio-economic activities on built-up land depend on local, non-renewable resource exploitation and external resource inputs. The emergy utilization efficiency of farmland has consistently decreased, but there remains significant utilization potential there. Urban development in Beijing relies on production activities on built-up land, which is subjected to great environmental pressure during extraction of material resources. To keep the economy developing effectively, we suggest that Beijing should commit to development of a circular economy, and change the land-use concept to “Smart Growth”. In this paper, we efficaciously solve the problem of conflicting measurement units, and avoid the disadvantages of subjective assignment. Consequently, this work provides not only a more scientific way to study land problems, but also provides a reliable reference for ecological construction and economic development in Beijing.

  10. Analysis of criteria weights for the assessment of corporate sustainability: a case study in sugar manufacturing

    Directory of Open Access Journals (Sweden)

    Panitas Sureeyatanapas

    2016-08-01

    Full Text Available The assessment of sustainability performance has become a topic widely discussed by business practitioners. The complexity of this issue is highlighted by the incorporation of a large number of criteria. Several methods under the context of Multiple Criteria Decision Analysis (MCDA have been employed to facilitate the aggregation of various criteria and to provide a guideline for decision making. As most MCDA methods assume that each criterion plays a role equal to its weight, this paper investigates the weight of each criterion in evaluation of corporate sustainability by focusing on the sugar industry in order to respond to the lack of MCDA and sustainability studies in this sector. The weighting is analysed by means of the relative importance based upon interviews and the direct rating technique. Statistical analysis is also conducted. The results from this empirical research indicate priorities of sustainability criteria and demonstrate the diversity of concerns within the industry when deciding on sustainability policies and strategies. This encourages practitioners to incorporate uncertain weights of sustainability criteria into decision making. Possible reasons for variations or changes in weights have been also discussed, and this enables practitioners to perform a sensitivity analysis in a more realistic way.

  11. The analysis of wms management system: a multi case study in developer companies and users

    Directory of Open Access Journals (Sweden)

    Felipe Furlan Soriano

    2014-02-01

    Full Text Available In recent years the number of companies that use WMS on its storage operation has increased. However, a great part of organizations that adopt this system has difficulties in the implementation process or in fully exploit its resources. In this context, this research aims to analyze the WMS system, identifying the key barriers inherent in its implementation process, the benefits and features curently offered to the market, as well as the trends to the tool development. This analysis was performed through the method of multicase study under the perspective of two system developers and three users. Based on the content analysis of the informations from literature review, the semi-structered interviews and the documentary analysis performed was possible to identify as the main difficulties in the process of system implementation the flaws in registration of products and addresses, mapping of logistics processes, the staff training and cultural work change. Regarding the system benefits, stands out the better operational control and the stock accuracy improvement. Finally the trends for the tool improvement involve linking the system with tablets and smartphones, integrations with RFID technology and customized reports generation.

  12. QUALITY INDEX CREATING AND ANALYSIS OF THE TRANSPARENCY OF AUDIT FIRMS - CASE STUDY IN CROATIA

    Directory of Open Access Journals (Sweden)

    Snježana Pivac

    2012-12-01

    Full Text Available This paper analyzes transparency of audit firms that audit financial statements of listed companies. Audit Act requires that all listed companies in Croatia must have their financial statements audited. In addition, the Act obliges auditing firms which carry out audits of public interest companies to prepare transparency reports and to publish them on their websites or on websites of the Audit Chamber. Considering the above, the main objective of this paper is to explore if audit firms operate transparently or not, and to create the quality index of transparency report based on archival analysis of published transparency reports and survey analysis conducted with relevant audit experts. Also, with regard to the essential elements of the audit transparency report, the aim of this paper is to investigate their stability and quality. Moreover, we wanted to find out whether there is a significant difference in transparency between the 'Big Four' audit firms and others. The analysis comprises the examination of the importance of certain elements of audit transparency reports, with aim of finding new elements (i.e. voluntary reporting to achieve a more transparency and better reports. The results of our study indicate that audit firms are not transparent fully.

  13. IMPROVING COMPETITIVE POWER PRODUCTS BY STRATEGIC ENVIRONMENTAL ANALYSIS: CASE STUDY CREDITS PRODUCTS’ EMPLOYEES OF BANK BPR

    Directory of Open Access Journals (Sweden)

    Kunto Ajibroto

    2017-09-01

    Full Text Available Strategic environment analysis is part of strategic planning component and is a process to always put the company in a strategic position, so that in its development will always be in a favorable position. By analyzing external factors and internal factors, it will be possible to find out the most appropriate strategy formulation for BPR Bhakti Daya Ekonomi in facing the increasingly fierce competition. The research method used is qualitative with data collection using interview and observation, while for data analysis using SWOT method which also use analysis of EFAS and IFAS. The results of this study indicate that the position of BPR Bhakti Daya Ekonomi for Credit Employees products is located in quadrant IV. In this quadrant the bank is in a position where its internal advantage is relatively more dominant than its weakness. However, in the face of the threat environment is relatively greater than the chances. This means that the bank has a relatively better internal capability to expand its business, especially by utilizing some of its internal strengths.

  14. Fatigue Analysis of Rotating Parts. A Case Study for a Belt Driven Pulley

    Science.gov (United States)

    Sandu, Ionela; Tabacu, Stefan; Ducu, Catalin

    2017-10-01

    The present study is focused on the life estimation of a rotating part as a component of an engine assembly namely the pulley of the coolant pump. The goal of the paper is to develop a model, supported by numerical analysis, capable to predict the lifetime of the part. Starting from functional drawing, CAD Model and technical specifications of the part a numerical model was developed. MATLAB code was used to develop a tool to apply the load over the selected area. The numerical analysis was performed in two steps. The first simulation concerned the inertia relief due to rotational motion about the shaft (of the pump). Results from this simulation were saved and the stress - strain state used as initial conditions for the analysis with the load applied. The lifetime of a good part was estimated. A defect was created in order to investigate the influence over the working requirements. It was found that there is little influence with respect to the prescribed lifetime.

  15. Using Analysis of Governance to Unpack Community-Based Conservation: A Case Study from Tanzania.

    Science.gov (United States)

    Robinson, Lance W; Makupa, Enock

    2015-11-01

    Community-based conservation policies and programs are often hollow with little real devolution. But to pass a judgment of community-based or not community-based on such initiatives and programs obscures what is actually a suite of attributes. In this paper, we analyze governance around a specific case of what is nominally community-based conservation-Ikona Wildlife Management Area (WMA) in Tanzania-using two complementary sets of criteria. The first relates to governance "powers": planning powers, regulatory powers, spending powers, revenue-generating powers, and the power to enter into agreements. The second set of criteria derive from the understanding of governance as a set of social functions: social coordination, shaping power, setting direction, and building community. The analysis helps to detail ways in which the Tanzanian state through policy and regulations has constrained the potential for Ikona WMA to empower communities and community actors. Although it has some features of community-based conservation, community input into how the governance social functions would be carried out in the WMA was constrained from the start and is now largely out of community hands. The two governance powers that have any significant community-based flavor-spending powers and revenue-generating powers-relate to the WMA's tourism activities, but even here the picture is equivocal at best. The unpacking of governance that we have done, however, reveals that community empowerment through the processes associated with creating and recognizing indigenous and community-conserved areas is something that can be pursued through multiple channels, some of which might be more strategic than others.

  16. Using Analysis of Governance to Unpack Community-Based Conservation: A Case Study from Tanzania

    Science.gov (United States)

    Robinson, Lance W.; Makupa, Enock

    2015-11-01

    Community-based conservation policies and programs are often hollow with little real devolution. But to pass a judgment of community-based or not community-based on such initiatives and programs obscures what is actually a suite of attributes. In this paper, we analyze governance around a specific case of what is nominally community-based conservation—Ikona Wildlife Management Area (WMA) in Tanzania—using two complementary sets of criteria. The first relates to governance "powers": planning powers, regulatory powers, spending powers, revenue-generating powers, and the power to enter into agreements. The second set of criteria derive from the understanding of governance as a set of social functions: social coordination, shaping power, setting direction, and building community. The analysis helps to detail ways in which the Tanzanian state through policy and regulations has constrained the potential for Ikona WMA to empower communities and community actors. Although it has some features of community-based conservation, community input into how the governance social functions would be carried out in the WMA was constrained from the start and is now largely out of community hands. The two governance powers that have any significant community-based flavor—spending powers and revenue-generating powers—relate to the WMA's tourism activities, but even here the picture is equivocal at best. The unpacking of governance that we have done, however, reveals that community empowerment through the processes associated with creating and recognizing indigenous and community-conserved areas is something that can be pursued through multiple channels, some of which might be more strategic than others.

  17. Site Response Analysis Using DeepSoil: Case Study of Bangka Site, Indonesia

    Energy Technology Data Exchange (ETDEWEB)

    Iswanto, Eko Rudi; Yee, Eric [KEPCO International Nuclear Graduate School, Ulsan (Korea, Republic of)

    2015-10-15

    Indonesia government declared through Act No. 17 year 2007 on the National Long-Term Development Plant Year 2005-2025 and Presidential Decree No. 5 year 2006 on the National Energy Policy (Indonesia 2007; Indonesia 2006), that nuclear energy is stated as a part of the national energy system. In order to undertake the above national policy, National Nuclear Energy Agency of Indonesia, as the promotor for the utilization of nuclear energy will conduct site study, which is a part of infrastructure preparation for NPP construction. Thorough preparation and steps are needed to operate an NPP and it takes between 10 to 15 years from the preliminary study (site selection, financial study, etc.) up to project implementation (manufacturing, construction, commissioning). During project implementation, it is necessary to prepare various documents relevant for permit application such as Safety Evaluation Report for site permit, Preliminary Safety Analysis Report and Environment Impact Assessment Report for construction permit. Considering the continuously increasing electricity energy demand, it is necessary to prepare for alternative NPP sites. The safety requirements of NPP's are stringent; amongst the various requirements is the ability to safely shut down in the wake of a possible earthquake. Ground response analysis of a potential site therefore needs to be carried out, parameter that affect the resistance of an NPP to earthquakes such as peak strain profiles is analysed. The objective of this paper is to analyse the ground response of the selected site for a NPP, using The Mw 7.9 in Sikuai Island, West Sumatra on September 12, 2007 as present input motion. This analysis will be carried out using a ground response analysis program, DeepSoil. In addition to this, an attempt was made to define the site specific input motion characteristics of the selected site for use in DeepSoil (DeepSoil 5.0). A site investigation at the WB site was performed primarily on the PS

  18. Nuclear terrorism risk analysis using game theory. Case study of sea transportation of MOX fuel

    International Nuclear Information System (INIS)

    Nakatani, Eri; Tanaka, Satoru; Choi, Jor-Shan

    2010-01-01

    While considerable attention and resources have been directed towards improving nuclear security in Japan in response to the threat of nuclear terrorism, the transport of nuclear material raises concern by the public as indicated in the recent return of MOX fuel from Europe. This concern cannot be adequately addressed by the government through communications with the public because of the confidential nature of such transport. Also, it remains a challenge for adequately assessing the nuclear terrorism risk because many key parameters associated with such assessment cannot be derived from statistical data and reflect actors' intentions unlike assessment on natural disasters. This study proposes an assessment methodology which introduces game theory to deduce the correlations between those key parameters and can be used to analyze the nuclear terrorism risk, both quantitatively and qualitatively for the civilian use of nuclear power. Risk will be calculated by Monte Carlo methods based on probability distributions set for actors' utilities. A case-study of transporting the MOX fuel by sea is also included. (author)

  19. Generation amount prediction and material flow analysis of electronic waste: a case study in Beijing, China.

    Science.gov (United States)

    Liu, Xianbing; Tanaka, Masaru; Matsui, Yasuhiro

    2006-10-01

    The draft legislation on e-waste prepared by the Chinese national government assigns management responsibility to local governments. It is an urgent task for the municipal government to plan an effective system as soon as possible to divert the e-waste flow from the existing informal e-waste recycling processes. This paper presents a case study implemented in Beijing, the capital city of China, with the purpose of predicting the amount of obsolete equipment for five main kinds of electronic appliances from urban households and to analyse the flow after the end of their useful phase. The amount to be handled was 885,354 units in 2005 and is predicted to double by 2010. Due to consumption growth and the expansion of urbanization it is estimated that the amount will increase to approximate 2,820,000 units by 2020: 70% of the obsolete appliances will be awaiting collection for possible recycling, 7% will be stored at the owner's home for 1 year on average and 4% will be discarded directly and enter the municipal solid waste collecting system. The remaining items will be reused for about 3 years on average after the change of ownership. The results of this study will assist the waste management authorities of Beijing to plan the collecting system and facilities needed for management of e-waste generated in the near future.

  20. Analysis of Risk Factors for Colonic Diverticular Bleeding: A Matched Case-Control Study.

    Science.gov (United States)

    Sugihara, Yuusaku; Kudo, Shin-ei; Miyachi, Hideyuki; Misawa, Masashi; Okoshi, Shogo; Okada, Hiroyuki; Yamamoto, Kazuhide

    2016-03-01

    Diverticular bleeding can occasionally cause massive bleeding that requires urgent colonoscopy (CS) and treatment. The aim of this study was to identify significant risk factors for colonic diverticular hemorrhage. Between January 2009 and December 2012, 26,602 patients underwent CS at our institution. One hundred twenty-three patients underwent an urgent CS due to acute lower gastrointestinal hemorrhage. Seventy-two patients were diagnosed with colonic diverticular hemorrhage. One hundred forty-nine age- and sex-matched controls were selected from the patients with nonbleeding diverticula who underwent CS during the same period. The relationship of risk factors to diverticular bleeding was compared between the cases and controls. Uni- and multivariate conditional logistic regression analyses demonstrated that the use of nonsteroidal anti-inflammatory drugs (odds ratio [OR], 14.70; 95% confidence interval [CI], 3.89 to 55.80; pdisease (OR, 8.66; 95% CI, 2.33 to 32.10; p=0.00126), and hyperuricemia (OR, 15.5; 95% CI, 1.74 to 138.00; p=0.014) remained statistically significant predictors of diverticular bleeding. Nonsteroidal anti-inflammatory drugs, cerebrovascular disease and hyperuricemia were significant risks for colonic diverticular hemorrhage. The knowledge obtained from this study may provide some insight into the diagnostic process for patients with lower gastrointestinal bleeding.

  1. Case Study for Effectiveness Analysis on Nuclear Regulatory Infrastructure Support for Emerging Nuclear Energy Countries

    International Nuclear Information System (INIS)

    Lee, Y. E.; Byeon, M. J.; Yoo, J. W.; Lee, J. M.; Lim, J. H.

    2016-01-01

    The donor countries need to make decisions on various steps such as whether to fully accept newcomers’ requests, the depth of support, and how the supportive action will be carried out. Such is not an easy task due to limited time, resources, manpower, etc. Thus, creating an infrastructure to support emerging nuclear energy countries is needed. This paper suggests the resource portfolio concept used in business management and aims to analyze the validity of supporting the new entrants’ development of regulatory infrastructure as a case study. This study tries to develop a very simple Excel-based tool for assessing the supporting strategy quantitatively and screening the activities that is projected to be less effective and attractive. There are many countries, so called newcomers, which have expressed interests in developing their own nuclear power program. It has been recognized by the international community that every country considering embarking upon their own nuclear power program should establish their nuclear safety infrastructure to sustain a high level of nuclear safety. The newcomers have requested for considerable assistance from the IAEA and they already have bilateral cooperation programs with the advanced countries with matured nuclear regulatory programs. Currently, the regulatory bodies that provide support are confronted with two responsibilities as follows; the primary objective of the regulatory bodies is to ensure that the operator fulfills the responsibility to protect human health

  2. Public participation in EIA in Hungary: Analysis through three case studies

    Energy Technology Data Exchange (ETDEWEB)

    Palerm, J.R. [Imperial College of Science, Technology and Medicine, London (United Kingdom)

    1999-03-01

    Public participation and environmental impact assessment (EIA) are recent developments in Hungary; in spite of this considerable advances have been made in their development. Hungarian EIA offers a range of public participation mechanisms depending on the year the permitting process began as well as the sector to which the project corresponds, offering a good range of examples to study and compare. Three case studies have been selected, each making use of different public participation schemes: (1) a hazardous waste incinerator, falling under the 1993 provisional EIA decree; (2) a power plant, falling under the 1993 provisional EIA decree as well as the 1994 Energy Act; and (3) a motorway previous to any EIA legislation but having to meet EBRD`s EIA requirements, the motorways planning process, and the developer`s own initiative for participation. The system`s strengths and weaknesses are identified, as well as lessons drawn from international EIA theory and practice, such as the need for including early public involvement and a formal scoping phase.

  3. A case study for cloud based high throughput analysis of NGS data using the globus genomics system

    Science.gov (United States)

    Bhuvaneshwar, Krithika; Sulakhe, Dinanath; Gauba, Robinder; Rodriguez, Alex; Madduri, Ravi; Dave, Utpal; Lacinski, Lukasz; Foster, Ian; Gusev, Yuriy; Madhavan, Subha

    2014-01-01

    Next generation sequencing (NGS) technologies produce massive amounts of data requiring a powerful computational infrastructure, high quality bioinformatics software, and skilled personnel to operate the tools. We present a case study of a practical solution to this data management and analysis challenge that simplifies terabyte scale data handling and provides advanced tools for NGS data analysis. These capabilities are implemented using the “Globus Genomics” system, which is an enhanced Galaxy workflow system made available as a service that offers users the capability to process and transfer data easily, reliably and quickly to address end-to-endNGS analysis requirements. The Globus Genomics system is built on Amazon 's cloud computing infrastructure. The system takes advantage of elastic scaling of compute resources to run multiple workflows in parallel and it also helps meet the scale-out analysis needs of modern translational genomics research. PMID:26925205

  4. A case study for cloud based high throughput analysis of NGS data using the globus genomics system

    Directory of Open Access Journals (Sweden)

    Krithika Bhuvaneshwar

    2015-01-01

    Full Text Available Next generation sequencing (NGS technologies produce massive amounts of data requiring a powerful computational infrastructure, high quality bioinformatics software, and skilled personnel to operate the tools. We present a case study of a practical solution to this data management and analysis challenge that simplifies terabyte scale data handling and provides advanced tools for NGS data analysis. These capabilities are implemented using the “Globus Genomics” system, which is an enhanced Galaxy workflow system made available as a service that offers users the capability to process and transfer data easily, reliably and quickly to address end-to-endNGS analysis requirements. The Globus Genomics system is built on Amazon's cloud computing infrastructure. The system takes advantage of elastic scaling of compute resources to run multiple workflows in parallel and it also helps meet the scale-out analysis needs of modern translational genomics research.

  5. Typological analysis of social linear blocks: Spain 1950-1983. The case study of western Andalusia

    Directory of Open Access Journals (Sweden)

    A. Guajardo

    2017-04-01

    Full Text Available A main challenge that cities will need to face in the next few years is the regeneration of the social housing estates built during the decades of 1950s, 1960s and 1970s. One of the causes of their obsolescence is the mismatch between their hous-ing typologies and the contemporary needs. The main target of this study is to contribute to take a step forward in the un-derstanding of these typologies to be able to intervene on them efficiently. With this purpose, a study on 42 linear blocks built in Spain between 1950 and 1983 in western Andalusia has been carried out. The analysis includes three stages: 1 classification of the houses in recognizable groups; 2 an identification of the most used spatial configurations and 3 definition of their programmatic and size characteristics. As a result, a characterization of linear blocks is proposed as a reference model for future regenerative interventions.

  6. Analysis of Factors Affecting the All Risk Yield: Case Study of Vilnius, Lithuanian Capital

    Directory of Open Access Journals (Sweden)

    Tomas Varnelis

    2011-07-01

    Full Text Available Overall capitalization rate is one of the key evaluation elements in operating income approach. Deriving capitalization rates from comparable sales is the preferred method when sufficient data on sales of similar, competitive properties are available. The capitali­zation rates provide evidence of the importance of local market conditions and individual property characteristics. This paper is an empirical study of the capitalization rates for 66 commercial premises sales in down town Vilnius from 2008 III q – 2009 I q. Seeking to derive factors affecting the capitalization rate, regressive-correlative analysis of capitalization rate of various commercial premises located on various streets of downtown Vilnius was carried out. Capitalization rate depends on qualitative and quantitative characteristics of real estate, i. e. purpose, total area of premises, storey they are on and quality of decoration. At the end of study results were summarized.Article in Lithuanian

  7. An Analysis of Training and Employee Performance: A Case Study in a Telecommunication Company in Erbil

    Directory of Open Access Journals (Sweden)

    Karwan Hushyar Sherwani

    2015-12-01

    Full Text Available The purpose of the research is to analyze the training program offered by a telecommunication company in Erbil city. This study applied quantitative study. 100 questionnaires had been distributed among the employees and managers and 93 of them were received. The questionnaire consisted of three parts, demographic, training questionnaire, and employee selection for training. The data collected was analyzed with SPSS V. 20, using descriptive, frequencies, and reliability test analysis. The reliability test is .757, the findings were analyzed and discussed based on the respondents perception. The results indicated the success of the training program to improve the employee‘s abilities to solve work obstacles, productivity, efficiency and specifically their performance. The results showed that respondents agree with the relevance of the training program with their tasks and duties.

  8. A finding in genetic polymorphism analysis study: A case of non-mosaic 47, XXX without manifestations.

    Science.gov (United States)

    Yang, Xingyi; Ye, Zilan; Zhang, Xiaofang; Wang, Huijun; Liu, Chao

    2017-07-01

    Trisomy X (47, XXX) is a sex chromosome aneuploidy condition in which females have an extra X chromosome, compared to the 46, XX karyotype in typical females. There is considerable variation in the phenotype, with some individuals very mildly affected and others with more significant physical and psychological features. However, the trisomy X in this case, without any of these phenotype, is rarely reported. Here, we report a case found during DNA sample collection in a study of genetic polymorphism analysis of loci in Chinese ethnic group, of a female with neither laboratory or clinical signs of Triple X syndrome. She was born at her mother's 60years old and her father's 62years old. Advanced maternal age was found acting as a significant risk factor of Triplo-X. Moreover, her child are also born without manifestations of 47, XXX syndrome. Pedigree study demonstrated the normal karyotype of the children. A diagnosis of 47XXX was made on the basis of a chromosomal study. Therefore, laboratory investigations (including PCR amplification, more than two kinds of X-STR genotyping, G-banding karyotyping analysis and Pedigree study) are applied to rule out the possibility of Mosaicism (45, X0/47, XXX) and ascertain her 47XXX karyotype without mosaic. The objective of this study was to report a case of trisomy X, diagnostic investigation and management of the case, and to analysis the genetically possible reasons behind the case. To our knowledge, this case is a rare one, found in DNA sample collection for the estimation of gene frequency in the process of genetic polymorphism study, of non-mosaic 47, XXX without signs of physical syndrome and born healthy children. In this study, it revealed that the proportion of trisomy X would be more than official statistics and risk of systemic disabilities is lower than estimated. Moreover, we found out that sample mixture and mosaicism act as the interference factors in forensic test. Therefore, we draw the conclusion that

  9. An analysis of uranium dispersal and health effects using a Gulf War case study.

    Energy Technology Data Exchange (ETDEWEB)

    Marshall, Albert Christian

    2005-07-01

    The study described in this report used mathematical modeling to estimate health risks from exposure to depleted uranium (DU) during the 1991 Gulf War for both U.S. troops and nearby Iraqi civilians. The analysis found that the risks of DU-induced leukemia or birth defects are far too small to result in an observable increase in these health effects among exposed veterans or Iraqi civilians. Only a few veterans in vehicles accidentally struck by U.S. DU munitions are predicted to have inhaled sufficient quantities of DU particulate to incur any significant health risk (i.e., the possibility of temporary kidney damage from the chemical toxicity of uranium and about a 1% chance of fatal lung cancer). The health risk to all downwind civilians is predicted to be extremely small. Recommendations for monitoring are made for certain exposed groups. Although the study found fairly large calculational uncertainties, the models developed and used are generally valid. The analysis was also used to assess potential uranium health hazards for workers in the weapons complex. No illnesses are projected for uranium workers following standard guidelines; nonetheless, some research suggests that more conservative guidelines should be considered.

  10. RAM analysis of earth pressure balance tunnel boring machines: A case study

    Directory of Open Access Journals (Sweden)

    Hasel Amini Khoshalan

    2015-12-01

    Full Text Available Earth pressure balance tunnel boring machines (EPB-TBMs are favorably applied in urban tunneling projects. Despite their numerous advantages, considerable delays and high maintenance cost are the main disadvantages these machines suffer from. Reliability, availability, and maintainability (RAM analysis is a practical technique that uses failure and repair dataset obtained over a reasonable time for dealing with proper machine operation, maintenance scheduling, cost control, and improving the availability and performance of such machines. In the present study, a database of failures and repairs of an EBP-TBM was collected in line 1 of Tabriz subway project over a 26-month interval of machine operation. In order to model the reliability of the TBM, this machine was divided into five distinct subsystems including mechanical, electrical, hydraulic, pneumatic, and water systems in a series configuration. According to trend and serial correlation tests, the renewal processes were applied, for analysis of all subsystems. After calculating the reliability and maintainability functions for all subsystems, it was revealed that the mechanical subsystem with the highest failure frequency has the lowest reliability and maintainability. Similarly, estimating the availability of all subsystems indicated that the mechanical subsystem has a relatively low availability level of 52.6%, while other subsystems have acceptable availability level of 97%. Finally, the overall availability of studied machine was calculated as 48.3%.

  11. Light and Ventilation Analysis for Infrastructure in an Urban Region - A Case Study

    Directory of Open Access Journals (Sweden)

    Awkash Kumar

    2017-07-01

    Full Text Available Pressure on infrastructure due to over population has deteriorated the indoor environment causing various health issues. It has also contributed to the sick building syndrome making huge monetary burden to economy. Public health department of the country has taken many actions to mitigate these issues however; design of the building was not taken into consideration. Optimum quantities of light and proper ventilation express the quality of indoor environment. Also, the use of natural light and ventilation is definitely an advantage with the raising concerns regarding the cost and environmental impact of energy use. Natural light and ventilation can reduce building construction and operation costs and reduce the energy consumption. Moreover it would also ensure safe, healthy and comfortable living conditions. Therefore, it is very important to assess indoor environment before implementing new construction or building. This provides theoretical guidelines and basic calculations for understanding a green infrastructures and the factors related to it. In this paper, a building has been studied in an urban city of India where the percentage area of light and ventilation were analyzed Analysis showed the percentage of light is thrice and ventilation is twice the prescribed limits by Indian Green Building Council (IGBC. It has been found that building under study fulfills the given criteria by IGBC. This analysis can be useful while constructing a new infrastructure to improve the standard of living as 90% time is spent indoors.

  12. Atmospheric Pressure and Abdominal Aortic Aneurysm Rupture: Results From a Time Series Analysis and Case-Crossover Study.

    Science.gov (United States)

    Penning de Vries, Bas B L; Kolkert, Joé L P; Meerwaldt, Robbert; Groenwold, Rolf H H

    2017-10-01

    Associations between atmospheric pressure and abdominal aortic aneurysm (AAA) rupture risk have been reported, but empirical evidence is inconclusive and largely derived from studies that did not account for possible nonlinearity, seasonality, and confounding by temperature. Associations between atmospheric pressure and AAA rupture risk were investigated using local meteorological data and a case series of 358 patients admitted to hospital for ruptured AAA during the study period, January 2002 to December 2012. Two analyses were performed-a time series analysis and a case-crossover study. Results from the 2 analyses were similar; neither the time series analysis nor the case-crossover study showed a significant association between atmospheric pressure ( P = .627 and P = .625, respectively, for mean daily atmospheric pressure) or atmospheric pressure variation ( P = .464 and P = .816, respectively, for 24-hour change in mean daily atmospheric pressure) and AAA rupture risk. This study failed to support claims that atmospheric pressure causally affects AAA rupture risk. In interpreting our results, one should be aware that the range of atmospheric pressure observed in this study is not representative of the atmospheric pressure to which patients with AAA may be exposed, for example, during air travel or travel to high altitudes in the mountains. Making firm claims regarding these conditions in relation to AAA rupture risk is difficult at best. Furthermore, despite the fact that we used one of the largest case series to date to investigate the effect of atmospheric pressure on AAA rupture risk, it is possible that this study is simply too small to demonstrate a causal link.

  13. 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, ...

  14. Living Labs in South Africa: An analysis based on five case studies

    CSIR Research Space (South Africa)

    Coetzee, H

    2012-08-01

    Full Text Available is co-creating during the interaction dimension. Social innovation is also included which corresponds to the interpersonal interac- tion. While in the first case the focus of Living Labs is on developing a product (hardware), in the second case...

  15. Barrier and operational risk analysis of hydrocarbon releases (BORA-Release). Part II: Results from a case study.

    Science.gov (United States)

    Sklet, Snorre; Vinnem, Jan Erik; Aven, Terje

    2006-09-21

    This paper presents results from a case study carried out on an offshore oil and gas production platform with the purpose to apply and test BORA-Release, a method for barrier and operational risk analysis of hydrocarbon releases. A description of the BORA-Release method is given in Part I of the paper. BORA-Release is applied to express the platform specific hydrocarbon release frequencies for three release scenarios for selected systems and activities on the platform. The case study demonstrated that the BORA-Release method is a useful tool for analysing the effect on the release frequency of safety barriers introduced to prevent hydrocarbon releases, and to study the effect on the barrier performance of platform specific conditions of technical, human, operational, and organisational risk influencing factors (RIFs). BORA-Release may also be used to analyse the effect on the release frequency of risk reducing measures.

  16. Analysis, prediction, and case studies of early-age cracking in bridge decks

    Science.gov (United States)

    ElSafty, Adel; Graeff, Matthew K.; El-Gharib, Georges; Abdel-Mohti, Ahmed; Mike Jackson, N.

    2016-06-01

    Early-age cracking can adversely affect strength, serviceability, and durability of concrete bridge decks. Early age is defined as the period after final setting, during which concrete properties change rapidly. Many factors can cause early-age bridge deck cracking including temperature change, hydration, plastic shrinkage, autogenous shrinkage, and drying shrinkage. The cracking may also increase the effect of freeze and thaw cycles and may lead to corrosion of reinforcement. This research paper presents an analysis of causes and factors affecting early-age cracking. It also provides a tool developed to predict the likelihood and initiation of early-age cracking of concrete bridge decks. Understanding the concrete properties is essential so that the developed tool can accurately model the mechanisms contributing to the cracking of concrete bridge decks. The user interface of the implemented computer Excel program enables the user to input the properties of the concrete being monitored. The research study and the developed spreadsheet were used to comprehensively investigate the issue of concrete deck cracking. The spreadsheet is designed to be a user-friendly calculation tool for concrete mixture proportioning, temperature prediction, thermal analysis, and tensile cracking prediction. The study also provides review and makes recommendations on the deck cracking based mainly on the Florida Department of Transportation specifications and Structures Design Guidelines, and Bridge Design Manuals of other states. The results were also compared with that of other commercially available software programs that predict early-age cracking in concrete slabs, concrete pavement, and reinforced concrete bridge decks. The outcome of this study can identify a set of recommendations to limit the deck cracking problem and maintain a longer service life of bridges.

  17. Shutdown decay heat removal analysis: Plant case studies and special issues: Summary report

    International Nuclear Information System (INIS)

    Ericson, D.M. Jr.; Cramond, W.R.; Sanders, G.A.; Hatch, S.W.

    1989-04-01

    Shutdown Decay Heat Removal Requirements has been designated as Unresolved Safety Issue (USI) A-45. The overall objectives of the USI A-45 program were to evaluate the safety adequacy of decay heat removal (DHR) systems in existing light water reactor nuclear power plants and to assess the value and impact (benefit-cost) of alternative measures for improving the overall reliability of the DHR function. To provide the technical data required to meet these objectives a program was developed that examined the state of DHR system reliability in a sample of existing plants. This program identified potential vulnerabilities and identified and established the feasibility of potential measures to improve the reliability of the DHR function. A value/impact (V/I) analysis of the more promising of such measures was conducted and documented. This report summarizes those studies. In addition, because of the evolving nature of V/I analyses in support of regulation, a number of supporting studies related to appropriate procedures and measures for the V/I analyses were also conducted. These studies are also summarized herein. This report only summarizes findings of technical studies performed by Sandia National Laboratories as part of the program to resolve this issue. 46 refs., 7 figs., 124 tabs

  18. Structuring and coding in health care records: a qualitative analysis using diabetes as a case study

    Directory of Open Access Journals (Sweden)

    Ann R R Robertson

    2015-03-01

    Full Text Available Background   Globally, diabetes mellitus presents a substantial burden to individuals and healthcare systems. Structuring and/or coding of medical records underpin attempts to improve information sharing and searching, potentially bringing clinical and secondary uses benefits.Aims and objectives   We investigated if, how and why records for adults with diabetes were structured and/or coded, and explored stakeholders’ perceptions of current practice.Methods   We carried out a qualitative, theoretically-informed case study of documenting healthcare information for diabetes patients in family practice and hospital settings, using semi-structured interviews, observations, systems demonstrations and documentary data.Results   We conducted 22 interviews and four on-site observations, and reviewed 25 documents. For secondary uses – research, audit, public health and service planning – the benefits of highly structured and coded diabetes data were clearly articulated. Reported clinical benefits in terms of managing and monitoring diabetes, and perhaps encouraging patient self-management, were modest. We observed marked differences in levels of record structuring and/or coding between settings, and found little evidence that these data were being exploited to improve information sharing between them.Conclusions   Using high levels of data structuring and coding in medical records for diabetes patients has potential to be exploited more fully, and lessons might be learned from successful developments elsewhere in the UK.

  19. Three-dimensional analysis of a ballet dancer with ischial tuberosity apophysitis. A case study.

    Science.gov (United States)

    Pohjola, Hanna; Sayers, Mark; Mellifont, Rebecca; Mellifont, Daniel; Venojärvi, Mika

    2014-12-01

    The purpose of this case study was to describe the three-dimensional biomechanics of common ballet exercises in a ballet dancer with ischial tuberosity apophysitis. This was achieved by comparing kinematics between the symptomatic (i.e. ischial apophyseal symptoms) and contralateral lower limbs, as well as via reported pain. Results suggest consistent differences in movement patterns in this dancer. These differences included: 1) decreased external rotation of contralateral hip, hence a decreased hip contribution to 'turn out'; 2) increased contralateral knee adduction and internal rotation; 3) an apparent synchronicity in the contralateral lower limb of the decreased hip external rotation and increased knee adduction; and 4) minimal use of ankle plantar/dorsiflexion movement for symptomatic side. Pain related to the left ischial apophysitis was associated with reduced amplitudes especially in fast ballet movements that required large range of motion in flexion and adduction in the left hip joint. These findings suggest that ischial apophysitis may limit dancer's ballet technique and performance. Key PointsThe pain related to the left ischial apophysitis was associated with reduced amplitudes especially in fast ballet movements that require large range of motion. This may affect to the lower limbs kinematics, and limit dancer's technique and performance.Compensatory strategies in the kinetic chain, differences in the joint angles between the lower limbs, traction forces, velocity and amplitude demands should be taken in consideration while training and rehabilitation of the ischial apophyseal injury within classical ballet.

  20. Medical student storytelling on an institutional blog: a case study analysis.

    Science.gov (United States)

    Becker, Katherine A; Freberg, Karen

    2014-05-01

    Despite the proclivity and proliferation of blogs on the Internet, the use of blogs at medical institutions is not well documented. In examining the structured stories that medical students share with the digital community, we may better understand how students use institutional blogs to discuss their medical school experiences while maintaining their role as a medical student ambassador for the program. We conducted a case study to analyze the stories within 309 medical student blogs from one medical institution in the United States. In an attempt to communicate their experiences to different benefactors, student bloggers engaged in structured and personal storytelling. Structured stories offered medical school advice to prospective students, while personal stories embodied features of a personal diary where students recounted significant milestones, talked about personal relationships and engaged in emotional reflection and disclosure. Institutional blogs may provide social marketing for medical institutions, as students strategically framed their experiences to reflect a positive attitude about the medical institution and focused on providing advice to prospective students. Although these structured stories limit complete disclosure, students may still achieve benefits by engaging in emotional disclosure and personal reflection.

  1. The Analysis of an Internal Combustion Engine Breakdown-Case Study

    Science.gov (United States)

    Agape, I.; Gaiginschi, L.; Ianuş, G.; Cimpoeşu, N.

    2017-06-01

    The paper concerns with the general assembly conditions and circumstances that could cause fatal damage to an internal combustion engine during operation. In the first part, the focus is on identifying the majority of dysfunctions that may result in the connecting rod destruction. Possible causes of the connecting rod destruction that led to engine failure are presented sequentially, starting with those of conceptual nature (the right choice of material, constructive solution and cross-sectional design from a geometric-dimensional point of view), then passing through issues related to operation (the severity of thermal and mechanical operation - and lubrication regimes) and last but not least, the effects of accumulated fatigue and potential structural defects of the material. This review of possible causes takes into account the particularities induced by the ignition engines and by the type of equipped machinery. The synthesis contains a case study on a 6-L medium displacement diesel engine in which the damage cause is accurately identified and which has been investigated with a scanning electron microscope (SEM).

  2. Vulnerability Analysis of Urban Rail Transit Networks: A Case Study of Shanghai, China

    Directory of Open Access Journals (Sweden)

    Daniel (Jian Sun

    2015-05-01

    Full Text Available Rail transit is developing rapidly in major cities of China and has become a key component of urban transport. Nevertheless, the security and reliability in operation are significant issues that cannot be neglected. In this paper, the network and station vulnerabilities of the urban rail transit system were analyzed based on complex network and graph theories. A vulnerability evaluation model was proposed by accounting metro interchange and passenger flow and further validated by a case study of Shanghai Metro with full-scale network and real-world traffic data. It is identified that the urban rail transit network is rather robust to random attacks, but is vulnerable to the largest degree node-based attacks and the highest betweenness node-based attacks. Metro stations with a large node degree are more important in maintaining the network size, while stations with a high node betweenness are critical to network efficiency and origin-destination (OD connectivity. The most crucial stations in maintaining network serviceability do not necessarily have the highest passenger throughput or the largest structural connectivity. A comprehensive evaluation model as proposed is therefore essential to assess station vulnerability, so that attention can be placed on appropriate nodes within the metro system. The findings of this research are of both theoretical and practical significance for urban rail transit network design and performance evaluation.

  3. Three-Dimensional Analysis of a Ballet Dancer with Ischial Tuberosity Apophysitis. A Case Study

    Directory of Open Access Journals (Sweden)

    Hanna Pohjola

    2014-12-01

    Full Text Available The purpose of this case study was to describe the three-dimensional biomechanics of common ballet exercises in a ballet dancer with ischial tuberosity apophysitis. This was achieved by comparing kinematics between the symptomatic (i.e. ischial apophyseal symptoms and contralateral lower limbs, as well as via reported pain. Results suggest consistent differences in movement patterns in this dancer. These differences included: 1 decreased external rotation of contralateral hip, hence a decreased hip contribution to ‘turn out’; 2 increased contralateral knee adduction and internal rotation; 3 an apparent synchronicity in the contralateral lower limb of the decreased hip external rotation and increased knee adduction; and 4 minimal use of ankle plantar/dorsiflexion movement for symptomatic side. Pain related to the left ischial apophysitis was associated with reduced amplitudes especially in fast ballet movements that required large range of motion in flexion and adduction in the left hip joint. These findings suggest that ischial apophysitis may limit dancer’s ballet technique and performance.

  4. Atmospheric organic nitrogen deposition: analysis of nationwide data and a case study in Northeast China.

    Science.gov (United States)

    Jiang, C M; Yu, W T; Ma, Q; Xu, Y G; Zou, H; Zhang, S C; Sheng, W P

    2013-11-01

    The origin of atmospheric dissolved organic nitrogen (DON) deposition is not very clear at present. Across China, the DON deposition was substantially larger than that of world and Europe, and we found significant positive correlation between contribution of DON and the deposition flux with pristine site data lying in outlier, possibly reflecting the acute air quality problems in China. For a case study in Northeast China, we revealed the deposited DON was mainly derived from intensive agricultural activities rather than the natural sources by analyzing the compiled dataset across China and correlating DON flux with NH4(+)-N and NO3(-)-N. Crop pollens and combustion of fossil fuels for heating probably contributed to summer and autumn DON flux respectively. Overall, in Northeast China, DON deposition could exert important roles in agro-ecosystem nutrient management and carbon sequestration of natural ecosystems; nationally, it was suggested to found rational network for monitoring DON deposition. Crown Copyright © 2013. Published by Elsevier Ltd. All rights reserved.

  5. Genome-wide analysis in endangered populations: a case study in Barbaresca sheep.

    Science.gov (United States)

    Mastrangelo, S; Portolano, B; Di Gerlando, R; Ciampolini, R; Tolone, M; Sardina, M T

    2017-07-01

    Analysis of genomic data is becoming increasingly common in the livestock industry and the findings have been an invaluable resource for effective management of breeding programs in small and endangered populations. In this paper, with the goal of highlighting the potential of genomic analysis for small and endangered populations, genome-wide levels of linkage disequilibrium, measured as the squared correlation coefficient of allele frequencies at a pair of loci, effective population size, runs of homozygosity (ROH) and genetic diversity parameters, were estimated in Barbaresca sheep using Illumina OvineSNP50K array data. Moreover, the breed's genetic structure and its relationship with other breeds were investigated. Levels of pairwise linkage disequilibrium decreased with increasing distance between single nucleotide polymorphisms. An average correlation coefficient base and indicated an endangered status for Barbaresca. Multidimensional scaling, model-based clustering, measurement of population differentiation, neighbor networks and haplotype sharing distinguished Barbaresca from other breeds, showed a low level of admixture with the other breeds considered in this study, and indicated clear genetic differences compared with other breeds. Attention should be given to the conservation of Barbaresca due to its critical conservation status. In this context, genomic information may have a crucial role in management of small and endangered populations.

  6. Energy use and economical analysis of potato production in Iran a case study: Ardabil province

    International Nuclear Information System (INIS)

    Mohammadi, Ali; Tabatabaeefar, Ahmad; Shahin, Shahan; Rafiee, Shahin; Keyhani, Alireza

    2008-01-01

    The purpose of this study is to determine energy consumption of input and output used in potato production, and making an economical analysis in Ardabil, Iran. For this purpose, the data were collected from 100 potato farms in Ardabil, Iran. Inquiries were conducted in a face-to-face interviewing November-December 2006 period. Farms were selected based on random sampling method. The results indicated that total energy inputs were 81624.96 MJ ha -1 . About 40% of this was generated by chemical fertilizers, 20% from diesel oil and machinery. About 82% of the total energy inputs used in potato production was indirect (seeds, fertilizers, manure, chemicals, machinery) and 18% was direct (human labor, diesel). Mean potato yield was about 28453.61 kg ha -1 , it obtained under normal conditions on irrigated farming, and taking into account the energy value of the seed, the net energy and energy productivity value was estimated to be 20808.03 MJ ha -1 and 0.35, respectively, and the ratio of energy outputs to energy inputs was found to be 1.25. This indicated an intensive use of inputs in potato production not accompanied by increase in the final product. Cost analysis revealed that total cost of production for one hectare of potato production was 3267.17 $. Benefit-cost ratio was calculated as 1.88

  7. Modeling of Iranian Cheetah Habitat using Ecological Niche Factor Analysis (Case Study: Dare Anjir Wildlife Refuge

    Directory of Open Access Journals (Sweden)

    N. Zamani

    2016-03-01

    Full Text Available Evaluation of habitat sustainability indexes is essential in wildlife management and conservation of rare species. Suitable habitats are required in wildlife managements and conservation also, they increase reproduction and survival rate of species. In this study in order to mapping habitat sustainability and recognizing habitat requirements of Iranian Cheetah (Acinonyx jubatus venaticus, field data from Dare Anjir  wildlife refuge were collected since autumn 2009 until summer 2011. Ecological Niche Factor Analysis approach has been used to develop habitat suitability model. In this method primary maps of  habitat variables including elevation, slope, aspect, vegetation cover, distance from water sources and environmental monitoring stations have been produced by Idrisi and Biomapper software and imported in Biomapper. The output scores obtained from the analysis showed that Iranian cheetah tends to mountain areas where has more topographical features for camouflage in order to hunting, and northern aspects which have more humidity, denser vegetation cover and more preys . Our result showed that the Iranian cheetah has medium niche width and prefer marginal habitats.

  8. Seismic assessment of guyed towers: A case study combining field measurements and pushover analysis

    Directory of Open Access Journals (Sweden)

    A. Ismail

    2016-04-01

    Full Text Available Telecommunication structures are essential components of communication and post-disaster networks that must remain operational after a designlevel of earthquake. This study provides dynamic field measurements of 138 m guyed tower located at Qussia city, Upper Egypt. In situ measurements of ambient tower vibrations are used to determine the dominant natural frequencies of the tower. The measurements were made using a LMS SCADAS system and four wireless vibration sensors for recording the ambient vibrations of the mast. The tension in the guy wires was measured by mechanical equipment. The dynamic properties of the guyed mast (natural frequencies and mode shapes were extracted from these measurements. Results of the eigenvalue analysis of numerical models of the tower were compared with the natural frequencies and mode shapes extracted from the in situ measurements. The field measurements were used to update the finite element model. The nonlinear static analysis based on the updated finite element model was carried out. Seismic assessment and comparison between the original and updated models taking into account the deterioration in elements are presented.

  9. Inclusive analysis and performance evaluation of solar domestic hot water system (a case study

    Directory of Open Access Journals (Sweden)

    Mohamed Ghorab

    2017-06-01

    Full Text Available In recent years Solar Domestic Hot Water systems have increased significantly their market share. In order to better understand the real-life performance of SDHW systems, a single detached house was selected for extensive monitoring. Two solar panels were installed on the house roof to provide thermal energy to the Domestic Hot Water (DHW system. The house was equipped with data logging system and remotely monitored with performance data collected and analyzed over one year. The paper presents the inclusive analysis and performance evaluation of SDHW system, including DHW recirculation loop, under Canadian weather conditions for average family occupancy (two adults and two kids with daily average DHW, draws of 246 L. Moreover, the study is carried out a significant recommendation to improve the SDHW performance, decrease the gas energy consumption and reduce greenhouse gas (GHG emissions. The SDHW performance depends mainly on DHW flow rate, draw time and duration, city water temperature, DHW recirculation loop control strategy and system layout. The performance analysis results show that 91.5% of the collected solar energy is transferred to the DHW heating load through the solar tank. The contribution to DHW heating load is about 69.4% from natural gas and 30.6% from solar. The recirculation loop is responsible for close to 34.9%, of DHW total energy.

  10. The next $120,000: a case study to illustrate analysis of alternative farm investments in fixed assets.

    Science.gov (United States)

    St-Pierre, N R; Shoemaker, D; Jones, L R

    2000-05-01

    Dairy scientists specializing in the area of farm management are increasingly involved in analysis of farm investments in fixed assets. There have been instances where the wrong procedures were used to assess investments in fixed assets, leading to erroneous and possibly disastrous conclusions. A detailed case study of a dairy farm facing the decision of where best to invest an unexpected $120,000 windfall is used to illustrate the various facets of financial analysis. Indicators of profitability, liquidity, solvency, repayment capacity, and financial efficiency are explained and applied to the farm case to produce a detailed analysis of the current financial position of the firm. Long-range budgets of four alternate investment options and their impact on all financial indicators are presented. The four options are: 1) to pay down debt, 2) to purchase an additional 100 cows, 3) to install automatic milk yield recording in the parlor, and 4) to build new heifer facilities. All four investments are profitable. Therefore, an analysis limited to profitability indicators would conclude that any of the four options is a good investment. However, liquidity and financial efficiency issues showed that the option of purchasing 100 cows is far superior to the three others. We conclude that a complete and thorough financial analysis is required to evaluate the impact of long-run investments in fixed assets.

  11. Spatial analysis of water infiltration in urban soils. Case study of Iasi municipality (Romania)

    Science.gov (United States)

    Cristian Vasilica, Secu; Ionut, Minea

    2013-04-01

    The post-communist period (after 1989) caused important changes in the functional structure of Iasi municipality. The partly dismantling of the industrial area, the urban sprawl against the periurban and agricultural space, the new infrastructure works, all these determined important changes of soils' physical and morphological properties (e.g. porosity, density, compaction, infiltration rate etc., in the first case, and changes in soil horizons, in the second case etc.). This study aims to prove the variability of physical properties through the combination of statistical and geostatistical methods intended for a correct spatial representation. Water infiltration in urban soils was analyzed in relation to land use and the age of parental materials. Field investigations consisted in measurements of the water infiltration (by the means of Turf Tech infiltrometer), resistance to penetration (penetrologger), moisture deficit (Theta Probe) and resistivity (EC) for 70 equally distanced points (750 m x 750 m) placed in a grid covering more than 33 km2. In the laboratory, there were determined several parameters as density, porosity (air pycnometer), gravimetric moisture and other hydrophysical indicators. Filed investigations results are very heterogeneous, because of the human intervention on soils. The curves of variation for the rate water infiltration in soils indicate a downward trend, from high values in first time interval (one minute), between 5000 and 60 mm/h-1, gradually decreasing to the interval of 5-10 minutes (between 30 and 1000 mm/ h-1 to a general trend of flattening after a large time interval (in the timeframe of 50-60 minutes, the infiltration rate ranges between 4 and 142 mm•h-1). The highest frequency (≥65%) caracterizes the infiltration rates between 20 and 65 mm•h-1. For each analyzed sector (residential areas, industrial areas, degraded lands, recreational areas - parks and botanical gardens, forests heterogeneous agricultural lands), the

  12. Comparative Analysis of Local and Foreign Banks Efficiency: A Case Study of Pakistan

    Directory of Open Access Journals (Sweden)

    Kashif Rashid

    2014-08-01

    Full Text Available Purpose – The core objective of this study is to measure the relative efficiency of domestic and foreign banks operating in Pakistan and secondly to emphasize on the basic factors which badly influence the efficiency of banks. The comparative efficiency of sample banks is estimated through application of Data Envelopment Analysis (DEA. The Banker, Charnes and Cooper (BCC model was used for the measurement of input oriented efficiency and Charnes, Cooper and Rhodes (CCR model was used for the estimation of output oriented efficiency. The first stage of findings indicates that foreign banks are more efficient in minimization of inputs compared to local banks. The results at the second stage also show that foreign banks are more efficient than local counterparts in maximization of outputs. Finally, the third stage indicates that under benchmarking, the National Bank of Pakistan (NBP and Hong Kong Shanghai Banking Corporation (HSBC remained the best performing and standard of excellence for the other banks.

  13. Analysis of Artificial Neural Network in Erosion Modeling: A Case Study of Serang Watershed

    Science.gov (United States)

    Arif, N.; Danoedoro, P.; Hartono

    2017-12-01

    Erosion modeling is an important measuring tool for both land users and decision makers to evaluate land cultivation and thus it is necessary to have a model to represent the actual reality. Erosion models are a complex model because of uncertainty data with different sources and processing procedures. Artificial neural networks can be relied on for complex and non-linear data processing such as erosion data. The main difficulty in artificial neural network training is the determination of the value of each network input parameters, i.e. hidden layer, momentum, learning rate, momentum, and RMS. This study tested the capability of artificial neural network application in the prediction of erosion risk with some input parameters through multiple simulations to get good classification results. The model was implemented in Serang Watershed, Kulonprogo, Yogyakarta which is one of the critical potential watersheds in Indonesia. The simulation results showed the number of iterations that gave a significant effect on the accuracy compared to other parameters. A small number of iterations can produce good accuracy if the combination of other parameters was right. In this case, one hidden layer was sufficient to produce good accuracy. The highest training accuracy achieved in this study was 99.32%, occurred in ANN 14 simulation with combination of network input parameters of 1 HL; LR 0.01; M 0.5; RMS 0.0001, and the number of iterations of 15000. The ANN training accuracy was not influenced by the number of channels, namely input dataset (erosion factors) as well as data dimensions, rather it was determined by changes in network parameters.

  14. Bayesian network modeling: A case study of an epidemiologic system analysis of cardiovascular risk.

    Science.gov (United States)

    Fuster-Parra, P; Tauler, P; Bennasar-Veny, M; Ligęza, A; López-González, A A; Aguiló, A

    2016-04-01

    An extensive, in-depth study of cardiovascular risk factors (CVRF) seems to be of crucial importance in the research of cardiovascular disease (CVD) in order to prevent (or reduce) the chance of developing or dying from CVD. The main focus of data analysis is on the use of models able to discover and understand the relationships between different CVRF. In this paper a report on applying Bayesian network (BN) modeling to discover the relationships among thirteen relevant epidemiological features of heart age domain in order to analyze cardiovascular lost years (CVLY), cardiovascular risk score (CVRS), and metabolic syndrome (MetS) is presented. Furthermore, the induced BN was used to make inference taking into account three reasoning patterns: causal reasoning, evidential reasoning, and intercausal reasoning. Application of BN tools has led to discovery of several direct and indirect relationships between different CVRF. The BN analysis showed several interesting results, among them: CVLY was highly influenced by smoking being the group of men the one with highest risk in CVLY; MetS was highly influence by physical activity (PA) being again the group of men the one with highest risk in MetS, and smoking did not show any influence. BNs produce an intuitive, transparent, graphical representation of the relationships between different CVRF. The ability of BNs to predict new scenarios when hypothetical information is introduced makes BN modeling an Artificial Intelligence (AI) tool of special interest in epidemiological studies. As CVD is multifactorial the use of BNs seems to be an adequate modeling tool. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  15. Decoupling and Decomposition Analysis of Carbon Emissions from Industry: A Case Study from China

    Directory of Open Access Journals (Sweden)

    Qiang Wang

    2016-10-01

    Full Text Available China has overtaken the United States as the world’s largest producer of carbon dioxide, with industrial carbon emissions (ICE accounting for approximately 65% of the country’s total emissions. Understanding the ICE decoupling patterns and factors influencing the decoupling status is a prerequisite for balancing economic growth and carbon emissions. This paper provides an overview of ICE based on decoupling elasticity and the Tapio decoupling model. Furthermore, the study identifies the factors contributing to ICE changes in China, using the Kaya identity and Log Mean Divisia Index (LMDI techniques. Based on the effects and contributions of ICE, we close with a number of recommendations. The results revealed a significant upward trend of ICE during the study period 1994 to 2013, with a total amount of 11,147 million tons. Analyzing the decoupling relationship indicates that “weak decoupling” and “expansive decoupling” were the main states during the study period. The decomposition analysis showed that per capita wealth associated with industrial outputs and energy intensity are the main driving force of ICE, while energy intensity of industrial output and energy structure are major determinants for ICE reduction. The largest contributing cumulative effect to ICE is per capita wealth, at 1.23 in 2013. This factor is followed by energy intensity, with a contributing cumulative effect of −0.32. The cumulative effects of energy structure and population are relatively small, at 0.01 and 0.08, respectively.

  16. Innovation in emerging energy technologies: A case study analysis to inform the path forward for algal biofuels

    International Nuclear Information System (INIS)

    Haase, Rachel; Bielicki, Jeffrey; Kuzma, Jennifer

    2013-01-01

    Algal biofuel is an emerging energy source that has the potential to improve upon the environmental benefits realized by conventional biofuels and contribute to the biofuels mandate set by the Renewable Fuel Standard (RFS). While there has been much research into producing fuel from algae, a commercial-scale facility has not yet been built. We examine two case studies of energy technology innovation in the United States, first generation biodiesel and solar photovoltaics (PV), using the technological innovation system (TIS) framework to provide lessons and inform the path forward for commercializing algal biofuel. We identify five event types that have been the most influential to these innovation processes: changing expectations, technology development, demonstration projects, policy targets, and government subsidies. Some algal biofuel demonstration projects have occurred, but despite falling under the mandates set forth in the RFS (a policy target), algal biofuels do not currently receive production subsidies. The main finding from the case study analysis is that government interventions have significantly influenced the innovation processes of first generation biodiesel and solar PV and will likely be key factors in the commercialization of algal biofuel. - Highlights: • Two energy technology case studies were analyzed with a TIS framework. • Major drivers in the innovation process were identified in each case. • Government interventions were key factors for both. • The one identified key driver algal biofuel is lacking is federal subsidies. • All components of the TIS framework deserve attention in promoting innovation

  17. Substance flow analysis in Finland - Four case studies on N and P flows

    Energy Technology Data Exchange (ETDEWEB)

    Antikainen, R.

    2007-07-01

    Nitrogen (N) and phosphorus (P) are essential elements for all living organisms. However, in excess, they contribute to such environmental problems as aquatic and terrestrial eutrophication (N, P), acidification (N), global warming (N), groundwater pollution (N), depletion of stratospheric ozone (N), formulation of tropospheric ozone (N) and poor urban air quality (N). Globally, human action has multiplied the volume of N and P cycling since the onset of industrialization. Themultiplication is a result of intensified agriculture, increased energy consumption and population growth. Industrial ecology (IE) is a discipline, in which human interaction with the ecosystems is investigated using a systems analytical approach. The main idea behind IE is that industrial systems resemble ecosystems, and, like them, industrial systems can then be described using material, energy and information flows and stocks. Industrial systems are dependent on the resources provided by the biosphere, and these two cannot be separated from each other. When studying substance flows, the aims of the research from the viewpoint of IE can be, for instance, to elucidate the ways how the cycles of a certain substance could be more closed and how the flows of a certain substance could be decreased per unit of production (= dematerialization). IE uses analytical research tools such as material and substance flow analysis (MFA, SFA), energy flow analysis (EFA), life cycle assessment (LCA) and material input per service unit (MIPS). In Finland, N and P are studied widely in different ecosystems and environmental emissions. A holistic picture comparing different societal systems is, however, lacking. In this thesis, flows of N and P were examined in Finland using SFA in the following four subsystems: (I) forest industry and use of wood fuels, II) food production and consumption, III) energy, and IV) municipal waste. A detailed analysis at the end of the 1990s was performed. Furthermore, historical

  18. A case-control collapsing analysis identifies epilepsy genes implicated in trio sequencing studies focused on de novo mutations.

    Directory of Open Access Journals (Sweden)

    Xiaolin Zhu

    2017-11-01

    Full Text Available Trio exome sequencing has been successful in identifying genes with de novo mutations (DNMs causing epileptic encephalopathy (EE and other neurodevelopmental disorders. Here, we evaluate how well a case-control collapsing analysis recovers genes causing dominant forms of EE originally implicated by DNM analysis. We performed a genome-wide search for an enrichment of "qualifying variants" in protein-coding genes in 488 unrelated cases compared to 12,151 unrelated controls. These "qualifying variants" were selected to be extremely rare variants predicted to functionally impact the protein to enrich for likely pathogenic variants. Despite modest sample size, three known EE genes (KCNT1, SCN2A, and STXBP1 achieved genome-wide significance (p<2.68×10-6. In addition, six of the 10 most significantly associated genes are known EE genes, and the majority of the known EE genes (17 out of 25 originally implicated in trio sequencing are nominally significant (p<0.05, a proportion significantly higher than the expected (Fisher's exact p = 2.33×10-17. Our results indicate that a case-control collapsing analysis can identify several of the EE genes originally implicated in trio sequencing studies, and clearly show that additional genes would be implicated with larger sample sizes. The case-control analysis not only makes discovery easier and more economical in early onset disorders, particularly when large cohorts are available, but also supports the use of this approach to identify genes in diseases that present later in life when parents are not readily available.

  19. 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

  20. System analysis of energy utilization from waste - evaluation of energy, environment and economy. Case study - Stockholm

    International Nuclear Information System (INIS)

    Sundqvist, Jan-Olov; Granath, Jessica; Frostell, Bjoern; Bjoerklund, Anna; Eriksson, Ola; Carlsson, Marcus

    1999-12-01

    Energy, environmental, and economic consequences of different management systems for municipal solid waste have been studied in a systems analysis. In the systems analysis, different combinations of incineration, materials recycling of separated plastic and cardboard containers, and biological treatment (anaerobic digestion) of easily degradable organic waste, were studied and also compared to landfilling. In the study a computer model (ORWARE) based on LCA methodology was used. The following parameters were used for evaluating the different waste management options: consumption of energy resources, global warming potential, acidification, eutrophication, photo oxidant formation, heavy metal flows, financial economy and welfare economy, where welfare economy is the sum of financial economy and environmental economy. The study shows that reduced landfilling to the benefit of an increased use of energy and material from the waste is positive, from an environmental and energy as well as economic aspect. This is mainly due to the fact that the choice of waste management method affects processes outside the waste management system, such as production of district heating, electricity, vehicle fuel, plastic, cardboard, and fertiliser. This means that landfilling of energy-rich waste should be avoided as far as possible, both because of the the environmental impact, and because of the low recovery of resources. Incineration should constitute a basis in the waste management system of Stockholm. Once the waste is collected, longer regional transports are of little significance, as long as the transports are carried out in an efficient manner. Comparing materials recycling and incineration, and biological treatment and incineration, no unambiguous conclusions can be drawn. There are benefits and drawbacks associated with all these waste management options. Materials recycling of plastic containers is comparable to incineration from a welfare economic aspect, but gives less

  1. System analysis of energy utilization from waste - evaluation of energy, environment and economy. Case study - Uppsala

    International Nuclear Information System (INIS)

    Sundqvist, Jan-Olov; Granath, Jessica; Frostell, Bjoern; Bjoerklund, Anna; Eriksson, Ola; Carlsson, Marcus

    1999-12-01

    Energy, environmental, and economic consequences of different management systems for municipal solid waste have been studied in a systems analysis. In the systems analysis, different combinations of incineration, materials recycling of separated plastic and cardboard containers, and biological treatment (anaerobic digestion and composting) of easily degradable organic waste, were studied and also compared to landfilling. In the study a computer model (ORWARE) based on LCA methodology was used. The following parameters were used for evaluating the different waste management options: consumption of energy resources, global warming potential, acidification, eutrophication, photo oxidant formation, heavy metal flows, financial economy and welfare economy, where welfare economy is the sum of financial economy and environmental economy. The study shows that reduced landfilling to the benefit of an increased use of energy and material from waste is positive from an environmental and energy as well as economic aspect. This is mainly due to the fact that the choice of waste management method affects processes outside the waste management system, such as production of district heating, electricity, vehicle fuel, plastic, cardboard, and fertiliser. This means that landfilling of energy-rich waste should be avoided as far as possible, both because of the the environmental impact, and because of the low recovery of resources. Incineration should constitute a basis in the waste management system of Uppsala. Once the waste is collected, longer regional transports are of little significance, as long as the transports are carried out in an efficient manner. Comparing materials recycling and incineration, and biological treatment and incineration, no unambiguous conclusions can be drawn. There are benefits and drawbacks associated with all these waste management options. Materials recycling of plastic containers is comparable to incineration from a welfare economic aspect, but gives

  2. System analysis of energy utilization from waste - evaluation of energy, environment and economy. Case study - Aelvdalen

    International Nuclear Information System (INIS)

    Sundqvist, Jan-Olov; Granath, Jessica; Frostell, Bjoern; Bjoerklund, Anna; Eriksson, Ola; Carlsson, Marcus

    1999-12-01

    Energy, environmental, and economic consequences of different management systems for municipal solid waste have been studied in a systems analysis. In the systems analysis, different combinations of incineration, materials recycling of separated plastic and cardboard containers, and biological treatment (anaerobic digestion and composting) of easily degradable organic waste, were studied and also compared to landfilling. In the study a computer model (ORWARE) based on LCA methodology was used. The following parameters were used for evaluating the different waste management options: consumption of energy resources, global warming potential, acidification, eutrophication, photo oxidant formation, heavy metal flows, financial economy and welfare economy, where welfare economy is the sum of financial economy and environmental economy. The study shows that reduced landfilling to the benefit of an increased use of energy and material from waste is positive from an environmental and energy as well as economic aspect. This is mainly due to the fact that the choice of waste management method affects processes outside the waste management system, such as production of district heating, vehicle fuel, plastic, cardboard, and fertiliser. This means that landfilling of energy-rich waste should be avoided as far as possible, both because of the the environmental impact, and because of the low recovery of resources. Incineration should constitute a basis in the waste management system of Aelvdalen, even if the waste has to be transported to a regional facility. Once the waste is collected, longer regional transports are of little significance, as long as the transports are carried out in an efficient manner. Comparing materials recycling and incineration, and biological treatment and incineration, no unambiguous conclusions can be drawn. There are benefits and drawbacks associated with all these waste management options. Materials recycling of plastic containers is comparable to

  3. Origin and transformation of environmental conflict: analysis of the participation and education processes through two case studies

    Directory of Open Access Journals (Sweden)

    Claudia Alexandra Munévar Quintero

    2015-06-01

    Full Text Available This article is the result of a theoretical research applied with a case study methodology. Through socio-legal analysis are exposed two environmental conflicts: forestry of Forest Reserve of Blanco River and the construction project of the transfer of Guarino River to La Miel River, both in the department of Caldas, Colombia. The first part describes the origin and mutation of conflicts, triangulating the main theoretical, normative and legal points of reference with the facts and stages of disputes under study. The second part presents the participation and legal environmental education as transforming elements of the conflict. The findings show how the transformations of the two cases, aimed at the incidence of environmental legal education and participation to achieve access to justice and the redefinition of the scope of environmental struggles were understood.

  4. Sensitivity analysis of the use of Life Cycle Impact Assessment methods: a case study on building materials

    DEFF Research Database (Denmark)

    Bueno, Cristiane; Hauschild, Michael Zwicky; Rossignolo, Joao Adriano

    2016-01-01

    The main aim of this research is to perform a sensitivity analysis of a Life Cycle Assessment (LCA) case study to understand if the use of different Life Cycle Impact Assessment (LCIA) methods may lead to different conclusions by decision makers and stakeholders. A complete LCA was applied to non......-load-bearing external climate walls for comparative purposes. The LCIA phase of the case study was performed using five different Impact Assessment Methods: EDIP 97/2003 (midpoint), CML 2001 (midpoint), Impact 2002+ (endpoint and midpoint), ReCiPe (endpoint and midpoint) and the ILCD recommended practices for LCIA......, Aquatic and Freshwater Ecotoxicity, Ionizing Radiation, Particulate Matter Formation, and Resources Depletion. Global Warming, Terrestrial Ecotoxicity, Human Toxicity (except for the Non-carcinogens impact category) and Land Use (except for Natural Land Transformation) showed partially consistent results...

  5. A two-step method for variable selection in the analysis of a case-cohort study.

    Science.gov (United States)

    Newcombe, P J; Connolly, S; Seaman, S; Richardson, S; Sharp, S J

    2017-11-10

    Accurate detection and estimation of true exposure-outcome associations is important in aetiological analysis; when there are multiple potential exposure variables of interest, methods for detecting the subset of variables most likely to have true associations with the outcome of interest are required. Case-cohort studies often collect data on a large number of variables which have not been measured in the entire cohort (e.g. panels of biomarkers). There is a lack of guidance on methods for variable selection in case-cohort studies. We describe and explore the application of three variable selection methods to data from a case-cohort study. These are: (i) selecting variables based on their level of significance in univariable (i.e. one-at-a-time) Prentice-weighted Cox regression models; (ii) stepwise selection applied to Prentice-weighted Cox regression; and (iii) a two-step method which applies a Bayesian variable selection algorithm to obtain posterior probabilities of selection for each variable using multivariable logistic regression followed by effect estimation using Prentice-weighted Cox regression. Across nine different simulation scenarios, the two-step method demonstrated higher sensitivity and lower false discovery rate than the one-at-a-time and stepwise methods. In an application of the methods to data from the EPIC-InterAct case-cohort study, the two-step method identified an additional two fatty acids as being associated with incident type 2 diabetes, compared with the one-at-a-time and stepwise methods. The two-step method enables more powerful and accurate detection of exposure-outcome associations in case-cohort studies. An R package is available to enable researchers to apply this method. © The Author 2017. Published by Oxford University Press on behalf of the International Epidemiological Association.

  6. Geological Hazards analysis in Urban Tunneling by EPB Machine (Case study: Tehran subway line 7 tunnel

    Directory of Open Access Journals (Sweden)

    Hassan Bakhshandeh Amnieh

    2016-06-01

    Full Text Available Technological progress in tunneling has led to modern and efficient tunneling methods in vast underground spaces even under inappropriate geological conditions. Identification and access to appropriate and sufficient geological hazard data are key elements to successful construction of underground structures. Choice of the method, excavation machine, and prediction of suitable solutions to overcome undesirable conditions depend on geological studies and hazard analysis. Identifying and investigating the ground hazards in excavating urban tunnels by an EPB machine could augment the strategy for improving soil conditions during excavation operations. In this paper, challenges such as geological hazards, abrasion of the machine cutting tools, clogging around these tools and inside the chamber, diverse work front, severe water level fluctuations, existence of water, and fine-grained particles in the route were recognized in a study of Tehran subway line 7, for which solutions such as low speed boring, regular cutter head checks, application of soil improving agents, and appropriate grouting were presented and discussed. Due to the presence of fine particles in the route, foam employment was suggested as the optimum strategy where no filler is needed.

  7. Technical efficiency analysis for oilseed sunflower farms: a case study in Erzurum, Turkey.

    Science.gov (United States)

    Külekçi, Murat

    2010-07-01

    The main purpose of this study was to examine the technical efficiency of farms producing sunflower in Erzurum, Turkey and to identify factors that might be causing inefficiency. Stochastic frontier analysis was used to measure technical efficiency. One hundred and seventeen randomly selected farms were interviewed for farm-level data in the 2004-2005 production period. Results revealed that the mean technical efficiency for the sunflower farms, estimated by the stochastic production frontier, is 64%. At full technical efficiency, on average, the farmers could reduce their inputs by around 56% without reducing their sunflower production, simply by improving technical efficiency. In the inefficiency model the parameter estimates showed that older farmers, higher level of farmer's education, more experienced farmers, larger farm size and higher information score resulted in lower technical inefficiency, while bigger family size and more credit usage resulted in higher technical inefficiency. This study proposes strategies such as providing better extension services and farmer-training programmes, including more educated people in sunflower farming and also expanding the sunflower-growing area through provision of adequate facilities in order to increase technical efficiency.

  8. Streamflow profile classification using functional data analysis: A case study on the Kelantan River Basin

    Science.gov (United States)

    Jamaludin, Suhaila

    2017-05-01

    Extreme rainfall events such as floods and prolonged dry spells have become common phenomena in tropical countries like Malaysia. Floods are regular natural disasters in Malaysia, and happen nearly every year during the monsoon season. Recently, the magnitude of streamflow seems to have altered frequently, both spatially and temporally. Therefore, in order to have effective planning and an efficient water management system, it is advisable that streamflow data are analysed continuously over a period of time. If the data are treated as a set of functions rather than as a set of discrete values, then this ensures that they are not restricted by physical time. In addition, the derivatives of the functions may themselves be treated as functional data, which provides new information. The objective of this study is to develop a functional framework for hydrological applications using streamflow as the functional data. The daily flow series from the Kelantan River Basin were used as the main input in this study. Seven streamflow stations were employed in the analysis. Classification between the stations was done using the functional principal component, which was based on the results of the factor scores. The results indicated that two stations, namely the Kelantan River (Guillemard Bridge) and the Galas River, have a different flow pattern from the other streamflow stations. The flow curves of these two rivers are considered as the extreme curves because of their different magnitude and shape.

  9. Inventory analysis and carbon footprint of coastland-hotel services: A Spanish case study.

    Science.gov (United States)

    Puig, Rita; Kiliç, Eylem; Navarro, Alejandra; Albertí, Jaume; Chacón, Lorenzo; Fullana-I-Palmer, Pere

    2017-10-01

    Tourism is a key industry in the Spanish economy. Spain was in the World top three ranking by international tourist arrivals and by income in 2015. The development of the tourism industry is essential to maintain the established economic system. However, if the environmental requirements were not taken into account, the country would face a negative effect on depletion of local environmental resources from which tourism depends. This case study evaluates, through a life cycle perspective, the average carbon footprint of an overnight stay in a Spanish coastland hotel by analyzing 14 two-to-five-stars hotels. Inventory and impact data are analyzed and presented both for resource use and greenhouse gases emissions, with the intention of helping in the environmental decision-making process. The main identified potential hotspots are electricity and fuels consumption (6 to 30kWh/overnight stay and 24 to 127MJ/overnight stay respectively), which are proportional to the number of stars and unoccupancy rate and they produce more than 75% of the impact. It is also revealed that voluntary implementation of environmental monitoring systems (like EMAS regulation) promotes collection of more detailed and accurate data, which helps in a more efficient use of resources. A literature review on LCA and tourism is also discussed. Spanish hotels inventory data presented here for the first time will be useful for tourism related managers (destination managers, policy makers and hotel managers among others) to calculate sustainability key indicators, which can lead to achieve real sustainable-tourism goals. Further data collection will be needed in future projects to gather representative data from more hotels, other accommodation facilities and also other products/services offered by tourist sector in Spain (like transport of tourists, food and beverage, culture-sports & recreation and others). Copyright © 2017 Elsevier B.V. All rights reserved.

  10. Structuring and coding in health care records: a qualitative analysis using diabetes as a case study.

    Science.gov (United States)

    Robertson, Ann R R; Fernando, Bernard; Morrison, Zoe; Kalra, Dipak; Sheikh, Aziz

    2015-03-27

    Globally, diabetes mellitus presents a substantial and increasing burden to individuals, health care systems and society. Structuring and coding of information in the electronic health record underpin attempts to improve sharing and searching for information. Digital records for those with long-term conditions are expected to bring direct and secondary uses benefits, and potentially to support patient self-management. We sought to investigate if how and why records for adults with diabetes were structured and coded and to explore a range of UK stakeholders' perceptions of current practice in the National Health Service. We carried out a qualitative, theoretically informed case study of documenting health care information for diabetes in family practice and hospital settings in England, using semi-structured interviews, observations, systems demonstrations and documentary data. We conducted 22 interviews and four on-site observations. With respect to secondary uses - research, audit, public health and service planning - interviewees clearly articulated the benefits of highly structured and coded diabetes data and it was believed that benefits would expand through linkage to other datasets. Direct, more marginal, clinical benefits in terms of managing and monitoring diabetes and perhaps encouraging patient self-management were also reported. We observed marked differences in levels of record structuring and/or coding between family practices, where it was high, and the hospital. We found little evidence that structured and coded data were being exploited to improve information sharing between care settings. Using high levels of data structuring and coding in records for diabetes patients has the potential to be exploited more fully, and lessons might be learned from successful developments elsewhere in the UK. A first step would be for hospitals to attain levels of health information technology infrastructure and systems use commensurate with family practices.

  11. Structural analysis of nanosystems: Solid Sorbitan esters Nanoparticles (SSN) as a case study.

    Science.gov (United States)

    Pensado, Andrea; Martín-Pastor, Manuel; Zorzi, Giovanni K; Carvalho, Edison S; Sanchez, Alejandro

    2016-07-01

    Innovative approaches in nanotechnology can provide drug delivery systems with a high potential in different fields. To avoid trial and error assays as a main driving force governing new designs and, furthermore, to develop successful nanosystem optimization strategies, it is of the greatest importance to develop specific characterisation techniques beyond conventional determinations of size, zeta potential and morphology. However, the application of techniques able to determine some key characteristics, such as nanostructure (i.e., solid structure vs vesicular), and the way in which the reorganization of components takes place on these structures has been scarcely explored. The present work has been devoted to provide some insights about the potential offered by some NMR techniques to those scientists working on nanotechnological approaches. For this purpose, we selected our nanosystems based on sorbitan monooleate as a case study. We used (1)H NMR methods, including a recently proposed method relying in the well-known Saturation Transfer Difference (STD) experiment for the observation of 'invisible signals' in large aggregates (Invisible State STD or ISSTD). Overall, these techniques revealed the presence in these nanosystems of a gradient of flexibility from an internal rigid core towards a more flexible region located on their surface, as well as the absence of water content in both regions. Such structure, corresponding to a solid nanostructure rather than a vesicular one, can explain some of the interesting properties previously observed for these innovative nanosystems, such as their high stability, and allows us to refer to these nanosystems with the term "Solid Sorbitan esters Nanoparticles" (SSN). On the basis of the valuable information provided by the mentioned characterisation techniques, it is our understanding that they could facilitate the future design of new drug delivery nanosystems as well as the improvement of existing ones and/or the

  12. [Analysis of the implementation of the TeleHealth Program in Pernambuco State, Brazil: a case study].

    Science.gov (United States)

    Oliviera, Dulcineide Gonçalo de; Frias, Paulo Germano de; Vanderlei, Lygia Carmen de Moraes; Vidal, Suely Arruda; Novaes, Magdala de Araújo; Souza, Wayner Vieira de

    2015-11-01

    The Network of TeleHealth Centers (RedeNutes) is part of the TeleHealth Brazil Program and conducts activities for the Family Health Strategy through the telecare and teleeducation services. The objective of this study was to evaluate the degree of implementation of RedeNutes in six municipalities (counties) in Pernambuco State. This was an evaluation study analyzing implementation in the second component, referring to analysis of the impact of implementation on the observed effects, backed by the multiple case study strategy. The analysis involved the manager, municipal, and global dimensions and their components: planning, development, portal, telecare, and teleeducation. In the Manager dimension, the degree of implementation was considered implemented; in the Municipal and Global dimensions, partially implemented; in the TeleCare component it was not implemented. In conclusion, TeleHealth can help improve comprehensive healthcare for the assisted population, but it requires overcoming problems with adherence to the intervention, especially in TeleCare.

  13. Candidate gene analysis of spontaneous preterm delivery: New insights from re-analysis of a case-control study using case-parent triads and control-mother dyads

    Directory of Open Access Journals (Sweden)

    Myking Solveig

    2011-12-01

    Full Text Available Abstract Background Spontaneous preterm delivery (PTD has a multifactorial etiology with evidence of a genetic contribution to its pathogenesis. A number of candidate gene case-control studies have been performed on spontaneous PTD, but the results have been inconsistent, and do not fully assess the role of how two genotypes can impact outcome. To elucidate this latter point we re-analyzed data from a previously published case-control candidate gene study, using a case-parent triad design and a hybrid design combining case-parent triads and control-mother dyads. These methods offer a robust approach to genetic association studies for PTD compared to traditional case-control designs. Methods The study participants were obtained from the Norwegian Mother and Child Cohort Study (MoBa. A total of 196 case triads and 211 control dyads were selected for the analysis. A case-parent triad design as well as a hybrid design was used to analyze 1,326 SNPs from 159 candidate genes. We compared our results to those from a previous case-control study on the same samples. Haplotypes were analyzed using a sliding window of three SNPs and a pathway analysis was performed to gain biological insight into the pathophysiology of preterm delivery. Results The most consistent significant fetal gene across all analyses was COL5A2. The functionally similar COL5A1 was significant when combining fetal and maternal genotypes. PON1 was significant with analytical approaches for single locus association of fetal genes alone, but was possibly confounded by maternal effects. Focal adhesion (hsa04510, Cell Communication (hsa01430 and ECM receptor interaction (hsa04512 were the most constant significant pathways. Conclusion This study suggests a fetal association of COL5A2 and a combined fetal-maternal association of COL5A1 with spontaneous PTD. In addition, the pathway analysis implied interactions of genes affecting cell communication and extracellular matrix.

  14. Attitudes of Crohn's Disease Patients: Infodemiology Case Study and Sentiment Analysis of Facebook and Twitter Posts.

    Science.gov (United States)

    Roccetti, Marco; Marfia, Gustavo; Salomoni, Paola; Prandi, Catia; Zagari, Rocco Maurizio; Gningaye Kengni, Faustine Linda; Bazzoli, Franco; Montagnani, Marco

    2017-08-09

    Data concerning patients originates from a variety of sources on social media. The aim of this study was to show how methodologies borrowed from different areas including computer science, econometrics, statistics, data mining, and sociology may be used to analyze Facebook data to investigate the patients' perspectives on a given medical prescription. To shed light on patients' behavior and concerns, we focused on Crohn's disease, a chronic inflammatory bowel disease, and the specific therapy with the biological drug Infliximab. To gain information from the basin of big data, we analyzed Facebook posts in the time frame from October 2011 to August 2015. We selected posts from patients affected by Crohn's disease who were experiencing or had previously been treated with the monoclonal antibody drug Infliximab. The selected posts underwent further characterization and sentiment analysis. Finally, an ethnographic review was carried out by experts from different scientific research fields (eg, computer science vs gastroenterology) and by a software system running a sentiment analysis tool. The patient feeling toward the Infliximab treatment was classified as positive, neutral, or negative, and the results from computer science, gastroenterologist, and software tool were compared using the square weighted Cohen's kappa coefficient method. The first automatic selection process returned 56,000 Facebook posts, 261 of which exhibited a patient opinion concerning Infliximab. The ethnographic analysis of these 261 selected posts gave similar results, with an interrater agreement between the computer science and gastroenterology experts amounting to 87.3% (228/261), a substantial agreement according to the square weighted Cohen's kappa coefficient method (w2K=0.6470). A positive, neutral, and negative feeling was attributed to 36%, 27%, and 37% of posts by the computer science expert and 38%, 30%, and 32% by the gastroenterologist, respectively. Only a slight agreement was

  15. Structural Path Analysis of Fossil Fuel Based CO2 Emissions: A Case Study for China.

    Science.gov (United States)

    Yang, Zhiyong; Dong, Wenjie; Xiu, Jinfeng; Dai, Rufeng; Chou, Jieming

    2015-01-01

    Environmentally extended input-output analysis (EEIOA) has long been used to quantify global and regional environmental impacts and to clarify emission transfers. Structural path analysis (SPA), a technique based on EEIOA, is especially useful for measuring significant flows in this environmental-economic system. This paper constructs an imports-adjusted single-region input-output (SRIO) model considering only domestic final use elements, and it uses the SPA technique to highlight crucial routes along the production chain in both final use and sectoral perspectives. The results indicate that future mitigation policies on household consumption should change direct energy use structures in rural areas, cut unreasonable demand for power and chemical products, and focus on urban areas due to their consistently higher magnitudes than rural areas in the structural routes. Impacts originating from government spending should be tackled by managing onsite energy use in 3 major service sectors and promoting cleaner fuels and energy-saving techniques in the transport sector. Policies on investment should concentrate on sectoral interrelationships along the production chain by setting up standards to regulate upstream industries, especially for the services, construction and equipment manufacturing sectors, which have high demand pulling effects. Apart from the similar methods above, mitigating policies in exports should also consider improving embodied technology and quality in manufactured products to achieve sustainable development. Additionally, detailed sectoral results in the coal extraction industry highlight the onsite energy use management in large domestic companies, emphasize energy structure rearrangement, and indicate resources and energy safety issues. Conclusions based on the construction and public administration sectors reveal that future mitigation in secondary and tertiary industries should be combined with upstream emission intensive industries in a

  16. Value of information analysis from a societal perspective: a case study in prevention of major depression.

    Science.gov (United States)

    Mohseninejad, Leyla; van Baal, Pieter H M; van den Berg, Matthijs; Buskens, Erik; Feenstra, Talitha

    2013-06-01

    Productivity losses usually have a considerable impact on cost-effectiveness estimates while their estimated values are often relatively uncertain. Therefore, parameters related to these indirect costs play a role in setting priorities for future research from a societal perspective. Until now, however, value of information analyses have usually applied a health care perspective for economic evaluations. Hence, the effect of productivity losses has rarely been investigated in such analyses. The aim of the current study therefore was to investigate the effects of including or excluding productivity costs in value of information analyses. Expected value of information analysis (EVPI) was performed in cost-effectiveness evaluation of prevention from both societal and health care perspectives, to give us the opportunity to compare different perspectives. Priorities for future research were determined by partial EVPI. The program to prevent major depression in patients with subthreshold depression was opportunistic screening followed by minimal contact psychotherapy. The EVPI indicated that regardless of perspective, further research is potentially worthwhile. Partial EVPI results underlined the importance of productivity losses when a societal perspective was considered. Furthermore, priority setting for future research differed according to perspective. The results illustrated that advise for future research will differ for a health care versus a societal perspective and hence the value of information analysis should be adjusted to the perspective that is relevant for the decision makers involved. The outcomes underlined the need for carefully choosing the suitable perspective for the decision problem at hand. Copyright © 2013 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.

  17. Structural Path Analysis of Fossil Fuel Based CO2 Emissions: A Case Study for China.

    Directory of Open Access Journals (Sweden)

    Zhiyong Yang

    Full Text Available Environmentally extended input-output analysis (EEIOA has long been used to quantify global and regional environmental impacts and to clarify emission transfers. Structural path analysis (SPA, a technique based on EEIOA, is especially useful for measuring significant flows in this environmental-economic system. This paper constructs an imports-adjusted single-region input-output (SRIO model considering only domestic final use elements, and it uses the SPA technique to highlight crucial routes along the production chain in both final use and sectoral perspectives. The results indicate that future mitigation policies on household consumption should change direct energy use structures in rural areas, cut unreasonable demand for power and chemical products, and focus on urban areas due to their consistently higher magnitudes than rural areas in the structural routes. Impacts originating from government spending should be tackled by managing onsite energy use in 3 major service sectors and promoting cleaner fuels and energy-saving techniques in the transport sector. Policies on investment should concentrate on sectoral interrelationships along the production chain by setting up standards to regulate upstream industries, especially for the services, construction and equipment manufacturing sectors, which have high demand pulling effects. Apart from the similar methods above, mitigating policies in exports should also consider improving embodied technology and quality in manufactured products to achieve sustainable development. Additionally, detailed sectoral results in the coal extraction industry highlight the onsite energy use management in large domestic companies, emphasize energy structure rearrangement, and indicate resources and energy safety issues. Conclusions based on the construction and public administration sectors reveal that future mitigation in secondary and tertiary industries should be combined with upstream emission intensive

  18. Pancreatic lipoma: An incydentaloma which can resemble cancer – analysis of 13 cases studied with CT and MRI

    International Nuclear Information System (INIS)

    Stadnik, Anna; Cieszanowski, Andrzej; Bakoń, Leopold; Grodzicka, Agnieszka; Rowiński, Olgierd

    2012-01-01

    The purpose of this article is to present computed tomography (CT) and magnetic resonance imaging (MRI) findings of rare pancreatic lipomas. The analysis covered 13 patients (7 men and 6 women, aged 47–88, average: 65.6 years), with 13 pancreatic lipomas, whose cases constituted the basis for 10 contrast-enhanced CT and 5 MRI studies. Lipomas measured from 6 mm to 32 mm (average 12.8 mm) and were located in the pancreatic head (n=7), body (n=2), tail (n=3) and uncinate process (n=1). Most lesions (n=11) were homogenous, well-circumscribed. On contrast-enhanced CT scans, macroscopic fat (<−30 HU) was present in 9 lipomas. In one case (10 mm lesion) the density was −20 HU and the lesion was poorly circumscribed with septations, which altogether made it difficult to precisely characterize its contents. On MR scans fat was demonstrated in all studied cases (n=5). Lipomas are rare, small, homogenous and well-circumscribed pancreatic tumours. The most important feature, decisive for the diagnosis and distinguishing them from pancreatic carcinoma, is detection of fatty tissue on CT and MR scans. In these cases differential diagnosis includes other rare fatty tumours of the pancreas (focal fatty infiltration, teratoma, liposarcoma)

  19. Global sensitivity analysis for complex ecological models: a case study of riparian cottonwood population dynamics.

    Science.gov (United States)

    Harper, Elizabeth B; Stella, John C; Fremier, Alexander K

    2011-06-01

    Mechanism-based ecological models are a valuable tool for understanding the drivers of complex ecological systems and for making informed resource-management decisions. However, inaccurate conclusions can be drawn from models with a large degree of uncertainty around multiple parameter estimates if uncertainty is ignored. This is especially true in nonlinear systems with multiple interacting variables. We addressed these issues for a mechanism-based, demographic model of Populus fremontii (Fremont cottonwood), the dominant riparian tree species along southwestern U.S. rivers. Many cottonwood populations have declined following widespread floodplain conversion and flow regulation. As a result, accurate predictive models are needed to analyze effects of future climate change and water management decisions. To quantify effects of parameter uncertainty, we developed an analytical approach that combines global sensitivity analysis (GSA) with classification and regression trees (CART) and Random Forest, a bootstrapping CART method. We used GSA to quantify the interacting effects of the full range of uncertainty around all parameter estimates, Random Forest to rank parameters according to their total effect on model predictions, and CART to identify higher-order interactions. GSA simulations yielded a wide range of predictions, including annual germination frequency of 10-100%, annual first-year survival frequency of 0-50%, and patch occupancy of 0-100%. This variance was explained primarily by complex interactions among abiotic parameters including capillary fringe height, stage-discharge relationship, and floodplain accretion rate, which interacted with biotic factors to affect survival. Model precision was primarily influenced by well-studied parameter estimates with minimal associated uncertainty and was virtually unaffected by parameter estimates for which there are no available empirical data and thus a large degree of uncertainty. Therefore, research to improve

  20. Multicriteria analysis to evaluate wave energy converters based on their environmental impact: an Italian case study

    Science.gov (United States)

    Azzellino, Arianna; Contestabile, Pasquale; Lanfredi, Caterina; Vicinanza, Diego

    2010-05-01

    harbour protection, and installed at -10m depth (length=300 m) may produce about 2.7 GWh/y with a total costs of about 12,000,000 €, where only the 50% of the amount are the costs of the SSG device. Obviously the environmental impact of the two solutions is quite different. Aim of this study is to provide a multicriteria decision support framework to evaluate the best WEC typology and location in the perspective of the environmental cost-benefit analysis. The general environmental aspects generated by wave power projects will be described. Colonisation patterns and biofouling will be discussed with particular reference to changes of the seabed and alterations due to new substrates. In addition, impacts for fish, fishery and marine mammals will be also considered. We suggest that wave power projects should be evaluated also on the basis of their environmental impacts in the perspective of the Strategic Environmental Assessment (SEA) analysis, as implemented by the European Commission (SEA Directive 2001/42/EC). The early incorporation of the environmental aspects involved in the evaluation of wave power projects will give the opportunity for early mitigations or design modifications, most likely making wave projects more acceptable in the long run and more suitable for the marine environment.

  1. Cases study of lung cancer deaths and analysis of radon levels in house-room of Mexicali, B. C

    International Nuclear Information System (INIS)

    Lopez B, G.; Reyna C, M. A.

    2009-10-01

    The lung cancer is a case of health of more importance as much in women as in men, with more frequency that the cancer of mamma, colon and prostate on the whole. A factor that influences in the cancer generation originating serious complications it is the exposition to radioactive substances in closed places, as house-room. In the investigation study, levels of radon concentration were measured in interiors of Mexicali homes, to study the relationship that this gas could have with the death cases by lung cancer into population. The gas radon is radioactive and it adheres easily to particles that remain suspended in air; when inhaling them small explosions take place inside the alveoli, changing the DNA of cells and lung cancer is generated. The meteorological, geographical and urban characteristics of Mexicali, favor conditions so that certain areas of the city present high indexes of suspended particles in atmosphere. One sample of gas radon inside 100 house-rooms, the analysis was made by paved and not paved colonies and for sex, to establish if the death cases by lung cancer had relationship with the genus and/or with some of two groups of colonies. The study found that the major number of deaths it was presented in colonies in which lacked the paving service and always happened with more frequency in women; and that in homes of having died by lung cancer the radon concentrations were more high that the homes where there was not death cases, with significant differences that go from 9.2% to 70%. This investigation project is presented as a cases study in the Mexicali City. (Author)

  2. Attacking Automatic Video Analysis Algorithms: A Case Study of Google Cloud Video Intelligence API

    OpenAIRE

    Hosseini, Hossein; Xiao, Baicen; Clark, Andrew; Poovendran, Radha

    2017-01-01

    Due to the growth of video data on Internet, automatic video analysis has gained a lot of attention from academia as well as companies such as Facebook, Twitter and Google. In this paper, we examine the robustness of video analysis algorithms in adversarial settings. Specifically, we propose targeted attacks on two fundamental classes of video analysis algorithms, namely video classification and shot detection. We show that an adversary can subtly manipulate a video in such a way that a human...

  3. Reliability analysis of mining equipment: A case study of a crushing plant at Jajarm Bauxite Mine in Iran

    International Nuclear Information System (INIS)

    Barabady, Javad; Kumar, Uday

    2008-01-01

    The performance of mining machines depends on the reliability of the equipment used, the operating environment, the maintenance efficiency, the operation process, the technical expertise of the miners, etc. As the size and complexity of mining equipments continue to increase, the implications of equipment failure become ever more critical. Therefore, reliability analysis is required to identify the bottlenecks in the system and to find the components or subsystems with low reliability for a given designed performance. It is important to select a suitable method for data collection as well as for reliability analysis. This paper presents a case study describing reliability and availability analysis of the crushing plant number 3 at Jajarm Bauxite Mine in Iran. In this study, the crushing plant number 3 is divided into six subsystems. The parameters of some probability distributions, such as Weibull, Exponential, and Lognormal distributions have been estimated by using ReliaSoft's Weibull++6 software. The results of the analysis show that the conveyer subsystem and secondary screen subsystem are critical from a reliability point of view, and the secondary crusher subsystem and conveyer subsystem are critical from an availability point of view. The study also shows that the reliability analysis is very useful for deciding maintenance intervals

  4. Judgment on the presence of radionuclides in sample analysis: A case study

    International Nuclear Information System (INIS)

    Muhamat Omar; Zalina Laili; Mohd Suhaimi Hamzah

    2012-01-01

    Qualitative and quantitative analysis of samples require good judgment from the analysts. These two aspects in gamma spectrometric analysis of Proficiency Test and solid radioactive waste samples for the determination of radionuclides are discussed. It is vital to judge and decide what energy peaks belong to which radionuclides prior to the creation of customized radionuclide library for the analysis of specific samples. Corrections due to radionuclide decay and growth, and the half-life assigned to a particular radionuclide in the uranium and thorium series are also discussed. Discussion on judgment to confirm the presence of thorium in food samples based on gamma spectrometry and neutron activation analysis is also provided. (author)

  5. Informational database methodology for urban risk analysis.Case study: the historic centre of Bucharest

    Science.gov (United States)

    Armas, I.; Dumitrascu, S.

    2009-04-01

    , but is also a very populated area, this being factors that favour a high susceptibility level. In addition, the majority of the buildings are included in the first and second categories of seismic risk, being built between 1875 and 1940, the age of the buildings establishing an increased vulnerability to natural hazards. The methodology was developed through the contribution of three partner universities from Bucharest: the University of Bucharest, the Academy for Economic Studies and the Technical University of Constructions. The method suggested was based on the analysis and processing of digital and statistical spatial information resulted from 1:500 topographical plans, satellite pictures, archives and historical maps used for the identification of the age of the buildings. Also, an important stage was represented by the field investigations that resulted with the data used in the assessment of the buildings: year of construction, location and vicinity, height, number of floors, state and function of the building, equipment and construction type. The information collected from the field together with the data resulted from the digitization of the ortophotoplans were inserted in ArcGIS in order to compile the database. Furthermore, the team from the Cybernetics Faculty developed a special software package in Visual Studio and SQL server in order to insert the sheets in GIS so that they could be statistically processed. The final product of the study is a program that includes as main functions editing, the analysis based on selected factors (individual or group) and viewing of building information in the shape of maps or 3D visualization. The strengths of the informational system resulted are given by the extended range of applicability, the short processing period, accessibility, capacity of support for a large amount of information and, thus, standing out as an adequate instrument to fit the needs of a susceptible population.

  6. Incorporating methane into ecological footprint analysis. A case study of Ireland

    International Nuclear Information System (INIS)

    Walsh, Conor; O'Regan, Bernadette; Moles, Richard

    2009-01-01

    Carbon dioxide (CO 2 ) accounting is important to global ecological footprint analysis. However methane (CH 4 ), with a global warming potential (GWP) 25 times that of CO 2 , should not be neglected as an environmental indicator for informed environmental management. While this is a significant component, the CH 4 associated with imported embodied energy should also be included in national greenhouse gas (GHG) inventories. This study proposes an initial method for incorporating methane into ecological footprint analyses and hopes to inform future debate on its inclusion. In order to account for differences in methane intensities from exporting countries, methane intensities for OECD countries were calculated using emission and energy consumption estimates taken directly from National Inventory Reports (NIR), published in conjunction with the Intergovernmental Panel on Climate Change (IPCC). For other countries the methane intensities were estimated using energy balances published by the International Energy Association (IEA) and IPCC default emission factors. In order to estimate embodied organic methane, material imports and exports were translated into units (such as live animals) capable of conversion into methane emissions. A significant increase in Ireland's footprint results from the inclusion of the GWP of methane is included within the footprint calculation. (author)

  7. Analysis of international student mobility at the undergraduate level. A case study

    Directory of Open Access Journals (Sweden)

    Omar Gustavo Guillén Velastegui

    2017-12-01

    Full Text Available This research work reveals the analysis of international undergraduate student mobility generated at the University of Cuenca-Ecuador between higher education institutions during the years 2015 and 2016. It should be noted that the formal processes of student exchange in favor of the academic formation of students, and the Institutions of Higher Education (IHE has a fundamental role in its execution; and consequently, it must keep in communication, using technological tools capable of responding to current needs that require immediate answers, maintaining a proper level of quality. The project proposed to analyze the current policies of the organism responsible for student mobility, identifying the areas of knowledge of interest for exchange student, and the mobility dynamics of the countries of origin according to the academic periods of the study. Based on the obtained results, some policies were recommended for the dependency, with criteria that allowed establishing strategies to improve student’s mobility procedures that optimize programs activities and increase the cooperation among (IHE in the Americas, Europe and Asia.

  8. Analysis of economic feasibility of sale of surplus electricity in cogeneration: case study

    International Nuclear Information System (INIS)

    Fodra, Marcelo; Esperancini, Maura Seiko Tsutsui

    2010-01-01

    The production of energy in large quantity and at competitive prices is crucial for economic development, which allied to the environmental question, has incentivated the use of renewable sources of energy. One of the most promising sources of renewable energy is the cogeneration from the residues of cane. Currently, the scenario for this kind of energy production is not consolidated, as production prices are not stable, inducing a risky situation for the environment. This work was aimed to study the economic viability of installing a main site for cogeneration of electricity, in a regional sugarcane factory located in the central region of Sao Paulo state that currently uses residues of sugar cane as fuel. The risk factor that was taken into consideration was the price paid for the MWh sold to the Chamber of Commerce of Electricity. The Monte Carlo Method was used to assess the risk factors for the analysis, by using of New Present Value (NPV), in a scenario that uses 20% of the initial investment made by the energy dealer. After the simulations were finished, considering the conditions used in this work, the project tends to be not feasible, as the behavior of the prices of cogenerated MWh are not sufficient for paying the initial investment and the operational costs. (author)

  9. Decision Process Analysis on Project Priority Strategy: A Case Study of an ICT Design Firm

    Directory of Open Access Journals (Sweden)

    Vincent F. Yu

    2014-01-01

    Full Text Available Project priority strategy is the benchmarking of a corporate operation management strategy and in particular is used by a projects-based research and development firm in the complex competence environment of the information and communication technology (ICT industry. This research takes the variables of external environments and internal resources into account for a firm’s market, technology, and finance assets in order to present a decision process on a project priority strategy. This empirical study also addresses the key factors of the interaction between business on a project development’s supply chain: clients, the examined firm, and suppliers. The findings indicate that a profit-driven project can dominate the firm’s strategic operations and management from the resource-based view and analytic hierarchy process technique perspectives. At the same time, the analysis results contribute significant values to project decision management, which is highly recommended for small-medium enterprises conducting product/project development, project portfolio management, and strategic business management.

  10. Economic analysis and optimal energy management models for microgrid systems: A case study in Taiwan

    International Nuclear Information System (INIS)

    Chen, Yen-Haw; Lu, Su-Ying; Chang, Yung-Ruei; Lee, Ta-Tung; Hu, Ming-Che

    2013-01-01

    Highlights: ► An optimization model of energy supply in microgrid system is formulated. ► Optimal energy management strategies are determined. ► Sensitivity analyses of storage capacity and energy demand is performed. -- Abstract: The purpose of this research is to perform economic analysis, formulate an optimization model, and determine optimal operating strategies for smart microgrid systems. Microgrid systems are electricity supply systems that integrate distributed renewable energy production for local demand. Microgrids are able to reduce transmission losses and improve utilization efficiency of electricity and heat. Further, greenhouse gas emissions are reduced by utilizing an efficient power generation microgrid system. This study presents an energy management model that is used to determine optimal operating strategies with maximum profit for a microgrid system in Taiwan. The smart microgrid system is equipped with energy storage devices, photovoltaic power, and wind power generation systems. Sensitivity analyses of investment in storage capacity and growth in electricity demand are conducted for the smart microgrid model. The results show that appropriate battery capacity should be determined on the basis of both battery efficiency and power supply.

  11. Analysis of gender differences in destination decision-making: The case study of Zakynthos Island

    Directory of Open Access Journals (Sweden)

    Đeri Lukrecija

    2017-01-01

    Full Text Available The process of tourist decision-making is heavily influenced by a number of external and internal factors, and can be interpreted only by using multidisciplinary theories and techniques in researches. The main goal of tourist s behavior analysis is to understand the motives and reasons of customer decisions during their choice of tourist destination. By getting to know the potential and existing customers, tourism companies can adjust the characteristics of their products. Higher customer satisfaction also means better the financial results. The research was conducted in the summer of 2013, through a structured questionnaire with 28 questions. The sample consists of 100 tourists, who visited the Greek island of Zakynthos as the customers of Rhapsody travel, tour operator from Belgrade, Serbia. The aim of this research is to determine the needs and motivation in the process of destination selection of tourists, who visited Zakynthos, and their comparison between genders. Data was processed with the IBM SPSS 19.0. software package for statistical research, through the Chi-Square statistical test. Results of the study showed that there are statistically significant differences only at the question categories of destination decision-making and expressing satisfaction and dissatisfaction.

  12. A reba-based analysis of packers workload: a case study

    Directory of Open Access Journals (Sweden)

    Andrzej M. Lasota

    2014-03-01

    Full Text Available Background: One of the elements of a logistics system is the subsystem of production, which is a system composed of physical elements such as machinery, tools and (most importantly people. In addition, system-dependent human operators are particularly prone to problems related to discomfort, which can affect production quality and increase training costs and absenteeism. The aim of this study was to assess the workload and risk of musculoskeletal discomfort (MSD's in the process of order fulfillment for the position of packer and to conduct an analysis of risk factors. Methods: The Rapid Entire Body Assessment (REBA evaluation method was used. Activities related to the fulfillment of an order were assessed for three workstations. Results: Five postures qualified for action category (AC 2, seven postures for AC 3 and one posture for AC 4. The main factors affecting the risk of a negative assessment of posture were keeping the back bent and twisted, keeping the arms raised above the trunk, working in a standing position and the weight of packaged carton. Conclusions: Packers working on research positions face a high level of exposure to the risk of MSD's, therefore corrective actions should be carried out as soon as possible. Ergonomic intervention should be linked to redesigning workstations and methods of working. After making changes to the research workstations, re-evaluation using the REBA method is recommended to verify the effectiveness of the changes.

  13. Biomass logistics analysis for large scale biofuel production: case study of loblolly pine and switchgrass.

    Science.gov (United States)

    Lu, Xiaoming; Withers, Mitch R; Seifkar, Navid; Field, Randall P; Barrett, Steven R H; Herzog, Howard J

    2015-05-01

    The objective of this study was to assess the costs, energy consumption and greenhouse gas (GHG) emissions throughout the biomass supply chain for large scale biofuel production. Two types of energy crop were considered, switchgrass and loblolly pine, as representative of herbaceous and woody biomass. A biomass logistics model has been developed to estimate the feedstock supply system from biomass production through transportation. Biomass in the form of woodchip, bale and pellet was investigated with road, railway and waterway transportation options. Our analysis indicated that the farm or forest gate cost is lowest for loblolly pine whole tree woodchip at $39.7/dry tonne and highest for switchgrass round bale at $72.3/dry tonne. Switchgrass farm gate GHG emissions is approximately 146kgCO2e/dry tonne, about 4 times higher than loblolly pine. The optimum biomass transportation mode and delivered form are determined by the tradeoff between fixed and variable costs for feedstock shipment. Copyright © 2015 Elsevier Ltd. All rights reserved.

  14. Input-output analysis in fertilizers sector. A case study of Turkey

    International Nuclear Information System (INIS)

    Karkacier, O.; Guelse, H.S.; Sayili, M.; Akca, H.

    1999-01-01

    The types of structural analysis in the input-output model known are forward and backwards ties. Fertilizer sector is tied forwardly agriculture, agri-business, chemistry, petro-chemistry and glass sector. In addition, it tied backwardly mining, chemistry, petro-chemistry, electricity, gas, water and transportation. The effect of backward tie of fertilizer sector is more important than its effect of the forward ties. In this study, by means of the year of 1979, 1985 and 1990 input-output table of Turkey the own situation of fertilizer industry and the production relation with other sectors of the economy have been tired to explain with forward and backwards ties. According to the result of the research it was determined that in 1990, (u j ) input coefficient of fertilizer sector is 69 %. That is, 69 percent of the product of fertilizer sector was used as an intermediate goods by other sectors. Therefore, 31 percent of goods produced by fertilizer sector was consumed as a final good. In addition, in this year, (w i ) intermediate use coefficient of fertilizer sector is 52 %. (w i ) intermediate use coefficient of fertilizer sector decreased from 1973 to 1990, as a result of this final use coefficient (1-w i ) increased. Refs. 5 (author)

  15. Application of data envelopment analysis to evaluate the efficiency of saffron growers (Case study: Qaen county

    Directory of Open Access Journals (Sweden)

    Hadis Kavand

    2014-06-01

    Full Text Available Agricultural sector to meet the requests such as a higher yield, less pollution and fulfill consumer demands due to increasing scarcity of resources is under pressure. According to the importance of efficiency in productivity growth, this index can play an important rule, especially in developing countries, for the development of agricultural systems in order to meet these requests. The aim of this study was to evaluate the technical, economic and allocative efficiency of producers of saffron for Qaen region using data envelopment analysis. Information and data is collected through completion 50 questionnaires in year 2011-2012. Results show that average technical efficiency, allocative and economic in condition of constant return to scale are 0.86, 0.92, and 0.88 and in condition of variable return scale are 0.89, 0.92, and 0.80, respectively. Also, according to the results obtained, educating and advising farmers to the proper use of available resources, and promotion, and the use of appropriate technologies such as improved efficiency is recommended.

  16. Techniques for water demand analysis and forecasting: Puerto Rico, a case study

    Science.gov (United States)

    Attanasi, E.D.; Close, E.R.; Lopez, M.A.

    1975-01-01

    The rapid economic growth of the Commonwealth-of Puerto Rico since 1947 has brought public pressure on Government agencies for rapid development of public water supply and waste treatment facilities. Since 1945 the Puerto Rico Aqueduct and Sewer Authority has had the responsibility for planning, developing and operating water supply and waste treatment facilities on a municipal basis. The purpose of this study was to develop operational techniques whereby a planning agency, such as the Puerto Rico Aqueduct and Sewer Authority, could project the temporal and spatial distribution of .future water demands. This report is part of a 2-year cooperative study between the U.S. Geological Survey and the Environmental Quality Board of the Commonwealth of Puerto Rico, for the development of systems analysis techniques for use in water resources planning. While the Commonwealth was assisted in the development of techniques to facilitate ongoing planning, the U.S. Geological Survey attempted to gain insights in order to better interface its data collection efforts with the planning process. The report reviews the institutional structure associated with water resources planning for the Commonwealth. A brief description of alternative water demand forecasting procedures is presented and specific techniques and analyses of Puerto Rico demand data are discussed. Water demand models for a specific area of Puerto Rico are then developed. These models provide a framework for making several sets of water demand forecasts based on alternative economic and demographic assumptions. In the second part of this report, the historical impact of water resources investment on regional economic development is analyzed and related to water demand .forecasting. Conclusions and future data needs are in the last section.

  17. ANALYSIS OF PACKERS\\' WORKLOAD ON THE PACKING LINE - A CASE STUDY

    Directory of Open Access Journals (Sweden)

    Andrzej Marek Lasota

    2014-12-01

    Full Text Available Background: One of the elements of the logistics system is the subsystem of production, which is a system composed of physical elements such as machinery and equipment, tools, and (most importantly people. In addition, systems dependent on the human operator are particularly prone to problems related to: discomfort, ensuring production quality and increases in training costs and absenteeism. Material and methods: The study was conducted in an establishment in the furniture industry, in the product packing department. The system under assessment included a position located at the conveyor belt. The aim of the study was to evaluate the load and the risk of musculoskeletal discomfort (MSD's among workers and conduct an analysis of risk factors. For the evaluation method, the Ovako Working posture Analysing System (OWAS was used. The evaluated activities related to the sequential packing of furniture in positions located at the conveyor belt. Results: The result was 7 tasks qualifying for action category (AC 1, 4 tasks for AC 2 and 5 activities for AC 4. The main risk factors influencing the negative assessment of posture were keeping the back sloped and twisted, work in a standing position and shifting weight onto one leg. Conclusions and recommendations: On each of the evaluated positions where AC 4 occurred, employees back and legs were particularly vulnerable while retrieving elements. Corrective action in these positions should be carried out as soon as possible. Ergonomic intervention should be linked to: reorganizing positions with particular emphasis on retrieving items as well as the storage of packed products; introduction of employee rotation on such positions to ensure load variation of the musculoskeletal system. After making changes on the test positions, reassessment with the OWAS method is recommended in order to verify the effectiveness of the changes.  

  18. Urban temperature analysis and impact on the building cooling energy performances: an Italian case study

    Directory of Open Access Journals (Sweden)

    Michele Zinzi

    2016-06-01

    Full Text Available Climate changes and urban sprawl are dramatically increasing the heat island effect in urban environments, whatever the size and the latitude are, affecting these latter parameters the effect intensity. The urban heats island is a phenomenon observed since the last decades of the XIX century but demonstrated at large scale only one century later, characterised by the increase of air temperature in densely built urban environments respect to the countryside surround cities. Many studies are available, showing urban heat island intensities up to 12°C. This thermal stress causes social, health and environmental hazards, with major consequences on weaker social classes, as elderly and low income people, it is not by chance that survey demonstrated the increase of deaths in such categories during intense and extended heat waves. This study presents the firs results on the observation of air temperature measures in different spots of Rome, city characterised by a typical Mediterranean climate and by a complex urban texture, in which densely built areas are kept separated by relatively green or not-built zones. Six spots are monitored since June 2014 and include: historical city centre, semi-central zones with different construction typologies, surrounding areas again with various urban and building designs. The paper is focused on the analysis of summer temperature profiles, increase respect to the temperature outside the cities and the impact on the cooling performance of buildings. Temperature datasets and a reference building model were inputted into the well-known and calibrated dynamic tool TRNSYS. Cooling net energy demand of the reference building was calculated, as well as the operative temperature evolution in the not cooled building configuration. The results of calculation allow to compare the energy and thermal performances in the urban environment respect to the reference conditions, usually adopted by building codes. Advice and

  19. Reconstruction Under Fire: Case Studies and Further Analysis of Civil Requirements

    Science.gov (United States)

    2010-01-01

    Impfondo Liranga Kalemie Mpala Kipushi Pointe- Noire Ilebo Ikela Bukavu Goma Kindu Matadi Mbandaka Kananga Kisangani Mbuji-Mayi Bandundu Lubumbashi Bangui...Islam.20 Many observers suspect that al-Baghdadi is a fictional personality, but whatever the case, his 18 Al-muhajir is the Arabic word for

  20. [Clinical study of induced abortion of early-early pregnancy: an analysis of 10, 404 cases].

    Science.gov (United States)

    Kang, Jian; Wang, Xue-fen; Zhang, Li; Liu, Jian-hua

    2012-01-03

    To evaluate the advantages and disadvantages of early-early pregnancy induced abortion (EPIA). A total of 10 404 cases of EPIA performed at our hospital from January 1993 to December 2003 were retrospectively analyzed and compared with 9434 cases of common induced abortion (CIA). The amount of hemorrhage and operative duration, degree of pain, rate of induced-abortion syndrome, rate of incomplete abortion, menstrual changes and post-operative onset of Asherman's syndrome were observed and compared between 2 groups. The average age, ratio of parous cases, ratio of the cases of first-pregnancy induced abortion were not different between 2 groups (P > 0.05). The amount of hemorrhage bleeding ((4.9 ± 3.2) ml), operative duration ((90.3 ± 12.4) s), degree of pain, rate of induced-abortion syndrome, menstrual changes and the rate of Asherman's syndrome in the EPIA group were all significantly less than those in the CIA group (P abortion (0.44%) in the EPIA group was significantly higher than that (0.21%) in the CIA group (P abortion stays high.

  1. Analysis of the organization implemented by a nuclear operator for ensuring the safety of his facilities: contribution of case studies

    International Nuclear Information System (INIS)

    Jeffroy, F.; Conte, D.

    2006-01-01

    This article is the chapter 6 of this book. It deals with the organization implemented by a nuclear operator and its suitability in warranting the safety of his facilities. An analysis approach has been defined which takes into consideration the formal aspect of the rules, structures and resources implemented by the organization, and which considers also the operational aspect through the collective activity of actors. The operation dynamics of the organisation has been approached through retrospective case studies aiming at understanding, from actors' contributions to the processing of events, how the characteristics of the organization were representing resources or constraints for the actors. This approach of organization through case studies must be put forward in the present day debate about cognitive ergonomics in sociology of organizations and in management. Several works try to put in relation the activity of 'front line' actors with the decisions and orientations taken at the strategic level. This supposes that one can combine an analysis of actors' activity integrating their point of view and and analysis of the structures and resources that are supplied to them by the organization. (J.S.)

  2. 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

  3. Evaluating management risks using landscape trajectory analysis: a case study of California fisher

    Science.gov (United States)

    Craig M. Thompson; William J. Zielinski; Kathryn L. Purcell

    2011-01-01

    Ecosystem management requires an understanding of how landscapes vary in space and time, how this variation can be affected by management decisions or stochastic events, and the potential consequences for species. Landscape trajectory analysis, coupled with a basic knowledge of species habitat selection, offers a straightforward approach to ecological risk analysis and...

  4. Wallerstein's World-Systems Analysis in Comparative Education: A Case Study

    Science.gov (United States)

    Griffiths, Tom G.; Knezevic, Lisa

    2010-01-01

    Since the 1970s, using his world-systems analysis, Immanuel Wallerstein has developed a wide-ranging framework for the social sciences, with potential applications for comparative educational research. In this paper we outline key aspects of Wallerstein's theorising, and then analyse the uptake, understandings, and applications of his analysis in…

  5. 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...

  6. 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...

  7. Cost and performance analysis of physical protection systems - a case study

    International Nuclear Information System (INIS)

    Hicks, M.J.; Snell, M.S.; Sandoval, J.S.; Potter, C.S.

    1998-01-01

    Design and analysis of physical protection systems requires (1) identification of mission critical assets; (2) identification of potential threats that might undermine mission capability; (3) identification of the consequences of loss of mission-critical assets (e.g., time and cost to recover required capability and impact on operational readiness); and (4) analysis of the effectiveness of physical protection elements. CPA -- Cost and Performance Analysis -- addresses the fourth of these four issues. CPA is a methodology that joins Activity Based Cost estimation with performance-based analysis of physical protection systems. CPA offers system managers an approach that supports both tactical decision making and strategic planning. Current exploratory applications of the CPA methodology address analysis of alternative conceptual designs. Hypothetical data is used to illustrate this process

  8. 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....

  9. Interactive mechanism of working environments and construction behaviors with cognitive work analysis: an elevator installation case study.

    Science.gov (United States)

    Wang, Yanqing; Chong, Heap-Yih; Liao, Pin-Chao; Ren, Hantao

    2017-09-25

    Unsafe behavior is a leading factor in accidents, and the working environment significantly affects behaviors. However, few studies have focused on detailed mechanisms for addressing unsafe behaviors resulting from environmental constraints. This study aims to delineate these mechanisms using cognitive work analysis (CWA) for an elevator installation case study. Elevator installation was selected for study because it involves operations at heights: falls from heights remain a major cause of construction worker mortality. This study adopts a mixed research approach based on three research methodology stages. This research deconstructs the details of the working environment, the workers' decision-making processes, the strategies chosen given environmental conditions and the conceptual model for workers' behaviors, which jointly depict environment-behavior mechanisms at length. By applying CWA to the construction industry, environmental constraints can easily be identified, and targeted engineering suggestions can be generated.

  10. Space-time analysis of testicular cancer clusters using residential histories: a case-control study in Denmark.

    Directory of Open Access Journals (Sweden)

    Chantel D Sloan

    Full Text Available Though the etiology is largely unknown, testicular cancer incidence has seen recent significant increases in northern Europe and throughout many Western regions. The most common cancer in males under age 40, age period cohort models have posited exposures in the in utero environment or in early childhood as possible causes of increased risk of testicular cancer. Some of these factors may be tied to geography through being associated with behavioral, cultural, sociodemographic or built environment characteristics. If so, this could result in detectable geographic clusters of cases that could lead to hypotheses regarding environmental targets for intervention. Given a latency period between exposure to an environmental carcinogen and testicular cancer diagnosis, mobility histories are beneficial for spatial cluster analyses. Nearest-neighbor based Q-statistics allow for the incorporation of changes in residency in spatial disease cluster detection. Using these methods, a space-time cluster analysis was conducted on a population-wide case-control population selected from the Danish Cancer Registry with mobility histories since 1971 extracted from the Danish Civil Registration System. Cases (N=3297 were diagnosed between 1991 and 2003, and two sets of controls (N=3297 for each set matched on sex and date of birth were included in the study. We also examined spatial patterns in maternal residential history for those cases and controls born in 1971 or later (N= 589 case-control pairs. Several small clusters were detected when aligning individuals by year prior to diagnosis, age at diagnosis and calendar year of diagnosis. However, the largest of these clusters contained only 2 statistically significant individuals at their center, and were not replicated in SaTScan spatial-only analyses which are less susceptible to multiple testing bias. We found little evidence of local clusters in residential histories of testicular cancer cases in this Danish

  11. Space-time analysis of testicular cancer clusters using residential histories: a case-control study in Denmark.

    Science.gov (United States)

    Sloan, Chantel D; Nordsborg, Rikke B; Jacquez, Geoffrey M; Raaschou-Nielsen, Ole; Meliker, Jaymie R

    2015-01-01

    Though the etiology is largely unknown, testicular cancer incidence has seen recent significant increases in northern Europe and throughout many Western regions. The most common cancer in males under age 40, age period cohort models have posited exposures in the in utero environment or in early childhood as possible causes of increased risk of testicular cancer. Some of these factors may be tied to geography through being associated with behavioral, cultural, sociodemographic or built environment characteristics. If so, this could result in detectable geographic clusters of cases that could lead to hypotheses regarding environmental targets for intervention. Given a latency period between exposure to an environmental carcinogen and testicular cancer diagnosis, mobility histories are beneficial for spatial cluster analyses. Nearest-neighbor based Q-statistics allow for the incorporation of changes in residency in spatial disease cluster detection. Using these methods, a space-time cluster analysis was conducted on a population-wide case-control population selected from the Danish Cancer Registry with mobility histories since 1971 extracted from the Danish Civil Registration System. Cases (N=3297) were diagnosed between 1991 and 2003, and two sets of controls (N=3297 for each set) matched on sex and date of birth were included in the study. We also examined spatial patterns in maternal residential history for those cases and controls born in 1971 or later (N= 589 case-control pairs). Several small clusters were detected when aligning individuals by year prior to diagnosis, age at diagnosis and calendar year of diagnosis. However, the largest of these clusters contained only 2 statistically significant individuals at their center, and were not replicated in SaTScan spatial-only analyses which are less susceptible to multiple testing bias. We found little evidence of local clusters in residential histories of testicular cancer cases in this Danish population.

  12. Geospatial Water Quality Analysis of Dilla Town, Gadeo Zone, Ethiopia - A Case Study

    Science.gov (United States)

    Pakhale, G. K.; Wakeyo, T. B.

    2015-12-01

    Dilla is a socio-economically important town in Ethiopia, established on the international highway joining capital cities of Ethiopia and Kenya. It serves as an administrative center of the Gedeo Zone in SNNPR region of Ethiopia accommodating around 65000 inhabitants and also as an important trade centre for coffee. Due to the recent developments and urbanization in town and surrounding area, waste and sewage discharge has been raised significantly into the water resources. Also frequent rainfall in the region worsens the problem of water quality. In this view, present study aims to analyze water quality profile of Dilla town using 12 physico-chemical parameters. 15 Sampling stations are identified amongst the open wells, bore wells and from surface water, which are being extensively used for drinking and other domestic purposes. Spectrophotometer is used to analyze data and Gaussian process regression is used to interpolate the same in GIS environment to represent spatial distribution of parameters. Based on observed and desirable values of parameters, water quality index (WQI); an indicator of weighted estimate of the quantities of various parameters ranging from 1 to 100, is developed in GIS. Higher value of WQI indicates better while low value indicates poor water quality. This geospatial analysis is carried out before and after rainfall to understand temporal variation with reference to rainfall which facilitates in identifying the potential zones of drinking water. WQI indicated that 8 out of 15 locations come under acceptable category indicating the suitability of water for human use, however remaining locations are unfit. For example: the water sample at main_campus_ustream_1 (site name) site has very low WQI after rainfall, making it unfit for human usage. This suggests undertaking of certain measures in town to enhance the water quality. These results are useful for town authorities to take corrective measures and ameliorate the water quality for human

  13. The co-integration analysis of factors affecting electricity consumption : a case study of Thailand

    Energy Technology Data Exchange (ETDEWEB)

    Kongruang, C. [Thaksin Univ., Songkhla (Thailand). Faculty of Economics and Business; Waewsak, J. [Thaksin Univ., Phatthalung (Thailand). Dept. of Physics, Solar and Wind Energy Research Lab

    2008-07-01

    A study was conducted in which the main determinants of electricity demand in Thailand were investigated. Time-series analysis methods were used, notably the unit root test, the Johansen co-integration test and an error correction model (ECM). The objective was to determine the factors affecting short and long-run electricity consumption. This paper presented annual time series data from 1971 to 2006. The unit root test revealed that all series are non-stationary. The Johansen co-integration test revealed the co-integration between variables and the existence of the long-term relationship between them. Electricity consumption accelerated with the increase in gross domestic product (GDP) and population. In contrast, an increase in commodity price would reduce electricity consumption. The coefficient of population indicated that an increase of 1 million in total population would result in an increase in electricity consumption of 0.099 per cent. Last, the results of ECM revealed that nearly 21 per cent of long-term disequilibrium is adjusted to the current period. The factors that affect electricity consumption include GDP growth, inflation rate and population growth. It was concluded that Thailand should prepare for additional power generation from clean energy sources such as solar, biomass and wind energy. Thailand's Energy Policy and Planning Office revealed that electricity consumption in 2008 would be over 130,000 GWh with per capita consumption at nearly 2,000 kWh. The power peak demand will be nearly 24,000 MW in 2008. This result was based on the forecasting model that considered only GDP growth. However, electricity consumption depends not only on the GDP growth, but also upon the other key variables such as population, electricity selling price, consumer price index and temperature. 17 refs., 5 tabs., 4 figs.

  14. Genomic analysis for managing small and endangered populations: A case study in Tyrol Grey cattle

    Directory of Open Access Journals (Sweden)

    Gábor eMészáros

    2015-05-01

    Full Text Available Analysis of genomic data is increasingly becoming part of the livestock industry. Therefore the routine collection of genomic information would be an invaluable resource for management of breeding programs in small, endangered populations. The objectives of this project were to analyse 1. linkage disequlibrium decay and the effective population size; 2. Inbreeding level and effective population size (NeROH based on runs of homozygosity (ROH; 3. Prediction of genomic breeding values (GEBV within and across breeds. In addition, the use of genomic information for breed management is discussed. The study was based on all available genotypes of Tyrol Grey AI bulls. ROHs were derived based on regions covering at least 4 Mb, 8 Mb and 16 Mb regions, with the corresponding mean inbreeding coefficients 4.0%, 2.9% and 1.6%, respectively. The NeROH was 125 (NeROH>16Mb, 186 (NeROH>8Mb and 370 (NeROH>4Mb, indicating strict avoidance of close inbreeding in the population.The genomic selection was developed for and is working well in large breeds. Contrary to the expectations, the accuracy of GEBVs with very small within breed reference populations were very high, between 0.13-0.91 and 0.12-0.63, when EBVs and dEBVs were used as pseudo-phenotypes, respectively. Subsequent analyses confirmed the high accuracies being heavily influenced by parent averages. Multi-breed and across breed reference sets gave inconsistent and lower accuracies. Genomic information may have a crucial role in management of small breeds. It allows to assess relatedness between individuals, trends in inbreeding and to take decisions accordingly. These decisions would be based on the real genome architecture, rather than conventional pedigree information, which can be missing or incomplete. We strongly suggest the routine genotyping of all individuals that belong to a small breed in order to facilitate the effective management of endangered livestock populations.

  15. Analysis of titanium and other metals in human jawbones with dental implants - A case series study.

    Science.gov (United States)

    He, Xiuli; Reichl, Franz-Xaver; Wang, Yan; Michalke, Bernhard; Milz, Stefan; Yang, Yang; Stolper, Philipp; Lindemaier, Gabriele; Graw, Matthias; Hickel, Reinhard; Högg, Christof

    2016-08-01

    The aim of this study was to measure titanium (Ti) content in human jawbones and to show that Ti was released from dental implants inserted into these jawbones. Seven samples from four human subjects with dental implants were analysed as test group and six bone samples of similar topographical regions from six human subjects without implants served as control. The contents of various elements in human jawbones were detected by inductively coupled plasma optical emission spectrometry. The distributions of various isotopes in human mandibular bone were measured with laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Histological analyses of undecalcified, Giemsa-Eosin stained mandible sections were performed by light microscopy and particles were identified in human bone marrow by scanning electron microscope-energy dispersive X-ray analysis. In test group only Ti content was significantly higher compared to control group. The mean contents of Ti were 1940μg/kg in test group and 634μg/kg in control group. The highest Ti content detected in human mandibular bone was 37,700μg/kg-bone weight. In samples 4-7 (human subjects II-IV), increased Ti intensity was also detected by LA-ICP-MS in human mandibular tissues at a distance of 556-1587μm from implants, and the intensity increased with decreasing distance from implants. Particles with sizes of 0.5-40μm were found in human jawbone marrow tissues at distances of 60-700μm from implants in samples 4-7. Ti released from dental implants can be detected in human mandibular bone and bone marrow tissues, and the distribution of Ti in human bone was related to the distance to the implant. Copyright © 2016 The Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

  16. Statistical Analysis And Treatment Of Accident Black Spots: A Case Study Of Nandyal Mandal

    Science.gov (United States)

    Sudharshan Reddy, B.; Vishnu Vardhan Reddy, L.; Sreenivasa Reddy, G., Dr

    2017-08-01

    Background: Increased, economic activity raised the consumption levels of the people across the country. This created scope for increase in travel and transportation. The increase in the vehicles since last 10 years has put lot of pressure on the existing roads and ultimately resulting in road accidents. Nandyal Mandal is located in the Kurnool district of Andhra Pradesh and well developed in both agricultural and industrial sectors after Kurnool. 567 accidents occurred in the last seven years at 143 locations shows the severity of the accidents in the Nandyal Mandal. There is a need to carry out some work in the Nandyal Mandal to improve the accidents black spots for reducing the accidents. Methods: Last seven years (2010-2016) of accident data collected from Police Stations. Weighted Severity Index (WSI), a scientific method is used for identifying the accident black spots. Statistical analysis has carried out for the collected data using Chi-Square Test to determine the independence of accidents with other attributes. Chi-Square Goodness of fit test conducted for test whether the accidents are occurring by chance or following any pattern. Results: WSI values are determined for the 143 locations. The Locations with high WSI are treated as accident black spots. Five black spots are taken for field study. After field observations and interaction with the public, some improvements are suggested for improving the accident black spots. There is no relationship between the severity of accidents and the other attributes like month, season, day, hours in day and the age group except type of vehicle. Road accidents are distributed throughout the Year, Month and Season. Road accidents are not distributed throughout the day.

  17. A Case Study of Analysis of Natural Frequency Variability Related to Manufacturing Process

    OpenAIRE

    Uhl, T.; Lisowski, W.

    2010-01-01

    One of the important challenges present nowadays in the automotive industry is minimizing of a car components design time. Traditional manufacturing of a prototype is usually a time and a cost consuming process. Alternatively, rapid prototyping techniques can be used in such a case. In the reported research a brake caliper was investigated, since it is an example of an element, which should have very strictly defined structural dynamic properties. As a technique of rapid prototyping of the co...

  18. An in Silico Analysis of Ankle Joint Loads in Secondary Ankle Osteoarthritis. Case Study.

    Science.gov (United States)

    Lorkowski, Jacek; Mrzygłód, Mirosław W; Grzegorowska, Oliwia; Kotela, Ireneusz

    2015-01-01

    Secondary, post-traumatic, degenerative lesions of the ankle joint remain a serious clinical challenge. This paper presents the case of a 66-year-old patient with secondary, post-traumatic ankle osteoarthritis and subchondral cysts. The use of rapid computer modelling FEM 2D enabled optimization of surgical treatment. A FEM 2D model of biomechanical changes in bones may help in streamlining treatment as well as improve our understanding of the pathomechanism of osteoarthritis.

  19. Qualitative Work and the Testing and Development of Theory: Lessons from a Study Combining Cross-Case and Within-Case Analysis via Ragin's QCA

    Directory of Open Access Journals (Sweden)

    Barry Cooper

    2012-03-01

    Full Text Available Charles RAGIN's work, especially his development of Qualitative Comparative Analysis (QCA, offers social scientists a way of bringing together the strengths of the qualitative and quantitative traditions. QCA takes a case-based rather than a variable-based analytic approach to cross-case analysis. One problem that arises in attempting to use QCA to explore causation in larger datasets, especially survey datasets, is that the detailed case knowledge available to those working in the qualitative tradition is usually unavailable. In the same way therefore that it can be difficult to establish causation from correlational analyses, the derivation of causal claims from QCA analyses can also be problematic. We discuss these problems in detail and then argue that they can be addressed by using QCA to identify particular types of cases for detailed within-case analysis focusing on causal processes. More specifically, we show how such in-depth, within-case analysis can identify factors that can be used to improve QCA models, including those used to select these cases for analysis. We illustrate this particular mode of combining methods by drawing on our work on educational transitions in Germany, drawing on both the German Socio-Economic Panel (SOEP dataset and 43 individual interviews with German 17-year olds. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs120247

  20. [Forensic analysis of death caused by fat embolism: A study of 20 autopsy cases].

    Science.gov (United States)

    Zhou, Lan; Mu, Jiao; Dong, Hong-Mei; Zhang, Ji

    2013-12-01

    To analyze the general and forensic pathological characteristics of death due to fat embolism syndrome (FES) and to provide reference data for forensic identification. Twenty autopsy cases due to FES were selected from the forensic center of a medical college from 1999 to 2012. The general and forensic pathological characteristics such as the ways and types of injuries, clinical manifestation and the pathological changes were summarized. Fat embolism mainly occurred after long bone fracture or a large area of soft tissue injury with the majority of cases being fat embolism of lung and occasional cases being combined embolisms of lung and brain as well. The onset of symptoms appeared shortly after the injury or surgery. Lipid droplets could be observed within small pulmonary vessels and verified by special staining. There are particular characteristics in death due to FES in concern with types of injuries, onset of symptoms and pathological findings. In order to find out the direct evidence of FES, special staining (oil red O staining) can be used in the forensic identification.

  1. Deep learning networks for stock market analysis and prediction : methodology, data representations, and case studies.

    OpenAIRE

    Chong, E.; Han, C.; Park, F.C.

    2017-01-01

    We offer a systematic analysis of the use of deep learning networks for stock market analysis and prediction. Its ability to extract features from a large set of raw data without relying on prior knowledge of predictors makes deep learning potentially attractive for stock market prediction at high frequencies. Deep learning algorithms vary considerably in the choice of network structure, activation function, and other model parameters, and their performance is known to depend heavily on the m...

  2. Twitter Sentiment Analysis Applied to Finance: A Case Study in the Retail Industry

    OpenAIRE

    Th\\'arsis Tuani Pinto Souza; Olga Kolchyna; Philip C. Treleaven; Tomaso Aste

    2015-01-01

    This paper presents a financial analysis over Twitter sentiment analytics extracted from listed retail brands. We investigate whether there is statistically-significant information between the Twitter sentiment and volume, and stock returns and volatility. Traditional newswires are also considered as a proxy for the market sentiment for comparative purpose. The results suggest that social media is indeed a valuable source in the analysis of the financial dynamics in the retail sector even whe...

  3. Analysis of new Matrilin-1 gene variants in a case-control study related to dental malocclusions in Equus asinus.

    Science.gov (United States)

    Rodrigues, João B; Araújo, Stéphane; Guedes-Pinto, Henrique; San Roman, Fidel; Viegas, Carlos; Bastos, Estela

    2013-06-10

    Prognathism and brachygnathism are craniofacial deformities that severely affect the health of human and vertebrates, such as donkeys. The multifactorial etiology of this disease makes the genetic analysis a powerful tool for its understanding and prevention of spreading these deformities. This study aims to contribute to the characterization of the genetic basis of prognathism and brachygnathism in donkeys, using the Zamorano-Leonés donkey, an endangered Spanish breed, as a model. Matrilin-1 (MATN1) polymorphisms have been previously described as markers for mandibular prognathism in Korean and Japanese human populations. Genetic variations in MATN1 gene were sought, in order to verify its association in a case-control study, including 30 donkeys presenting brachygnathism, 30 donkeys presenting prognathism and 30 donkeys with normal occlusion phenotypes. One genetic variation (g503G > A) located in an intronic region of MATN1 gene was identified and characterized. Statistically significant differences were detected between the control group and prognathism cases, but no statistical significant results were found between the control group and the brachygnathism cases. These results support evidence for an important role of MATN1 on prognathism in the analyzed population with MATN1 genetic variation - 503G>A - having a protective effect. Further studies should be developed in order to understand the whole role of MATN1 and the mechanisms affected by its genetic variations. Copyright © 2013 Elsevier B.V. All rights reserved.

  4. Cyber Risk Management for Critical Infrastructure: A Risk Analysis Model and Three Case Studies.

    Science.gov (United States)

    Paté-Cornell, M-Elisabeth; Kuypers, Marshall; Smith, Matthew; Keller, Philip

    2018-02-01

    Managing cyber security in an organization involves allocating the protection budget across a spectrum of possible options. This requires assessing the benefits and the costs of these options. The risk analyses presented here are statistical when relevant data are available, and system-based for high-consequence events that have not happened yet. This article presents, first, a general probabilistic risk analysis framework for cyber security in an organization to be specified. It then describes three examples of forward-looking analyses motivated by recent cyber attacks. The first one is the statistical analysis of an actual database, extended at the upper end of the loss distribution by a Bayesian analysis of possible, high-consequence attack scenarios that may happen in the future. The second is a systems analysis of cyber risks for a smart, connected electric grid, showing that there is an optimal level of connectivity. The third is an analysis of sequential decisions to upgrade the software of an existing cyber security system or to adopt a new one to stay ahead of adversaries trying to find their way in. The results are distributions of losses to cyber attacks, with and without some considered countermeasures in support of risk management decisions based both on past data and anticipated incidents. © 2017 Society for Risk Analysis.

  5. Analysis of Wind Data for Sports Performance Design: A Case Study for Sailing Sports

    Directory of Open Access Journals (Sweden)

    Alessandro Pezzoli

    2014-11-01

    Full Text Available Environmental conditions affect outdoor sports performance. This is particularly true in some sports, especially in the sport of sailing, where environmental parameters are extremely influential as they interact directly with strategic analysis of the race area and then with strategic analysis of the performance itself. For these reasons, this research presents an innovative methodology for the strategic analysis of the race course that is based on the integrated assessment of meteorological data measured on the ground, meteorological data measured at sea during the training activities and the results of the CALMET model in hindcasting over a limited scale. The results obtained by the above analysis are then integrated into a graphical representation that provides to coaches and athletes the main strategic directions of the race course in a simple and easy-to-use way. The authors believe that the innovative methodology that has been adopted in the present research may represent a new approach to the integrated analysis of meteorological data on coastal environments. On the other hand, the results of this analysis, if presented with an appropriate technique of meta‑communication adapted to the sport sectors, can be used effectively for the improvement of athletes’ performances.

  6. Meta-analysis of gene-environment interaction exploiting gene-environment independence across multiple case-control studies.

    Science.gov (United States)

    Estes, Jason P; Rice, John D; Li, Shi; Stringham, Heather M; Boehnke, Michael; Mukherjee, Bhramar

    2017-10-30

    Multiple papers have studied the use of gene-environment (G-E) independence to enhance power for testing gene-environment interaction in case-control studies. However, studies that evaluate the role of G-E independence in a meta-analysis framework are limited. In this paper, we extend the single-study empirical Bayes type shrinkage estimators proposed by Mukherjee and Chatterjee (2008) to a meta-analysis setting that adjusts for uncertainty regarding the assumption of G-E independence across studies. We use the retrospective likelihood framework to derive an adaptive combination of estimators obtained under the constrained model (assuming G-E independence) and unconstrained model (without assumptions of G-E independence) with weights determined by measures of G-E association derived from multiple studies. Our simulation studies indicate that this newly proposed estimator has improved average performance across different simulation scenarios than the standard alternative of using inverse variance (covariance) weighted estimators that combines study-specific constrained, unconstrained, or empirical Bayes estimators. The results are illustrated by meta-analyzing 6 different studies of type 2 diabetes investigating interactions between genetic markers on the obesity related FTO gene and environmental factors body mass index and age. Copyright © 2017 John Wiley & Sons, Ltd.

  7. Analysis of Induced Polarization effects in airborne TEM data - a case study from central East Greenland

    Science.gov (United States)

    Maack Rasmussen, Thorkild; Brethes, Anaïs; Pierpaolo Guarnieri, Pierpaolo; Bauer, Tobias

    2017-04-01

    Data from a high-resolution airborne SkyTEM time-domain electromagnetic survey conducted in central East Greenland were analysed. An analysis based on utilization of a Self Organizing Map procedure for response curve characterization and analyses based on data inversion and modelling are presented. The survey was flown in 2013 along the eastern margin of the Jameson Land basin with the purpose of base metal exploration and with sulphide mineralization as target. The survey area comprises crystalline basement to the East and layered Early Triassic to Jurassic sediments to the West. The layers are dipping a few degrees towards West. The Triassic sequence is 1 to 2 km thick and mostly of continental origin. The fluviatile Early Triassic arkoses and conglomerates, the Upper Triassic grey limestone and black shale beds and overlying gypsiferous sandstones and mudstones are known to host disseminated sulphides. E-W oriented lines were flown with an average terrain clearance of 30m and a separation of 300m. The data were initially processed and inverted by SkyTEM Aps. The conductivity models showed some conductive layers as well as induced polarization (IP) effects in the data. IP effects in TEM data reflect the relaxation of polarized charges in the ground which can be good indicators of the presence of metallic particles. Some of these locations were drilled during the following field season but unfortunately did not reveal the presence of mineralization. The aim of this study is therefore to understand the possible causes of these IP effects. Electrical charge accumulation in the ground can be related to the presence of sulphides, oxides or graphite or to the presence of clays or fibrous minerals. Permafrost may also cause IP effects and is then expected to be associated with a highly resistive subsurface. Several characteristics of the transient curves (IP indicators) of the SkyTEM survey were extracted and analysed by using the Kohonen Self-Organizing Map (SOM

  8. 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

  9. A Bayesian Belief Network modelling of organisational factors in risk analysis: A case study in maritime transportation

    International Nuclear Information System (INIS)

    Trucco, P.; Cagno, E.; Ruggeri, F.; Grande, O.

    2008-01-01

    The paper presents an innovative approach to integrate Human and Organisational Factors (HOF) into risk analysis. The approach has been developed and applied to a case study in the maritime industry, but it can also be utilised in other sectors. A Bayesian Belief Network (BBN) has been developed to model the Maritime Transport System (MTS), by taking into account its different actors (i.e., ship-owner, shipyard, port and regulator) and their mutual influences. The latter have been modelled by means of a set of dependent variables whose combinations express the relevant functions performed by each actor. The BBN model of the MTS has been used in a case study for the quantification of HOF in the risk analysis carried out at the preliminary design stage of High Speed Craft (HSC). The study has focused on a collision in open sea hazard carried out by means of an original method of integration of a Fault Tree Analysis (FTA) of technical elements with a BBN model of the influences of organisational functions and regulations, as suggested by the International Maritime Organisation's (IMO) Guidelines for Formal Safety Assessment (FSA). The approach has allowed the identification of probabilistic correlations between the basic events of a collision accident and the BBN model of the operational and organisational conditions. The linkage can be exploited in different ways, especially to support identification and evaluation of risk control options also at the organisational level. Conditional probabilities for the BBN have been estimated by means of experts' judgments, collected from an international panel of different European countries. Finally, a sensitivity analysis has been carried out over the model to identify configurations of the MTS leading to a significant reduction of accident probability during the operation of the HSC

  10. CLUSTER AND MULTICRITERIAL COMPARATIVE REGIONAL ANALYSISCASE STUDY OF CROATIAN COUNTIES

    Directory of Open Access Journals (Sweden)

    Elza Jurun

    2010-12-01

    Full Text Available Croatia as EU accession country is divided into three Nomenclature des unites territoriales statistiques (NUTS 2 regions which are quite different from twenty one official administrative Croatian Counties. Furthermore, Croatian Counties show significant economic and social disproportions. These disproportions are in the focus of the extended on-going scientific research. The focus of this paper is regional multimethodological approach and its results comparative analysis. After Croatian Counties classification by hierarchical Cluster analysis, multicriterial comparative approach is used. Weighting process within Croatian Counties ranking is based on statistical linkage of a set of regional variables (regional GDP per capita, employment, gross investment, production of more important agricultural products, GVA per person employed, construction works value, exports, imports, foreign tourists arrivals, foreign tourists nights, ecology…. Subsequently, comparative rank analysis is realized by rank correlation coefficient hypothesis testing and Friedman test. At the end of this research phase all multimethodological approach results are compared with existing regional administrative division of Croatian territory.

  11. Analysis of Software Binaries for Reengineering-Driven Product Line Architecture—An Industrial Case Study

    Directory of Open Access Journals (Sweden)

    Ian D. Peake

    2015-04-01

    Full Text Available This paper describes a method for the recovering of software architectures from a set of similar (but unrelated software products in binary form. One intention is to drive refactoring into software product lines and combine architecture recovery with run time binary analysis and existing clustering methods. Using our runtime binary analysis, we create graphs that capture the dependencies between different software parts. These are clustered into smaller component graphs, that group software parts with high interactions into larger entities. The component graphs serve as a basis for further software product line work. In this paper, we concentrate on the analysis part of the method and the graph clustering. We apply the graph clustering method to a real application in the context of automation / robot configuration software tools.

  12. Psoas compartment disease studied by computed tomography: analysis of 50 cases and subject review

    Energy Technology Data Exchange (ETDEWEB)

    Feldberg, M.A.M.; Koehler, P.R.; van Waes, P.F.G.M.

    1983-08-01

    Fifty patients with disease involving the psoas compartment were analyzed. There were 27 patients with inflammation, 17 with tumor, and 6 with hemorrhage. In all but 3 cases the disease did not originate in the psoas but spread there from neighboring structures. Disease processes followed the fascial planes in patients with abscesses and hemorrhage but were less predictable with tumors. All three types of lesions were similar radiographically and were often indistinguishable. Asymmetry of the muscle mass, regions of decreased density, and opacification of fat in the peri- and pararenal compartments were the most frequent signs of disease. Computed tomography is recommended as the diagnostic procedure of choice.

  13. Performance analysis of electricity generation by the medium temperature geothermal resources: Velika Ciglena case study

    International Nuclear Information System (INIS)

    Rašković, Predrag; Guzović, Zvonimir; Cvetković, Svetislav

    2013-01-01

    During the last decade, a design of an energy efficient and cost effective geothermal plant represents a significant and on-going technical challenge in all the Western Balkan countries. In the Republic of Croatia, the geothermal field Velika Ciglena is identified as one of the most valuable geothermal heat sources and probably the location where the first geothermal plant in the Western Balkan area will be built. The purpose of this work is the conceptual design and performance analysis of the binary plants–the one which operates under the Organic Rankine Cycle (ORC) and the other under Kalina (KLN) cycle–which can be used for geothermal energy utilization in Velika Ciglena. A conceptual plant design is performed by the equation-oriented modelling approach and supported by the two steady-state spreadsheet simulators. The performance analysis of all design solutions is conducted through energy and exergy analysis, and by the estimated total cost of operating units in the plant. The results of the analysis indicate that the plant design based on the ORC cycle has a higher thermodynamic efficiency and lower cost of equipment, and consequently, it is more suitable for the future geothermal plant in Velika Ciglena. - Highlights: ► Paper presents the analysis of binary geothermal plant for the utilization of recourses in Velika Ciglena field (Croatia). ► Thermodynamic and economical parameters of both cycles are calculated by the spreadsheet simulation software. ► The results of performance analysis indicate the advantage of electricity production based on ORC cycle

  14. VALUE CHAIN ANALYSIS OF BROILER TO INCREASE COMPETITIVENESS (Case Study at PT. Charoen Pokphand Indonesia, Tbk

    Directory of Open Access Journals (Sweden)

    Surip Prayugo

    2012-09-01

    Full Text Available The objectives of this research are to (1 map the value chain in broiler at PT. Charoen Pokphand Indonesia, Tbk (CPI; (2 analyze the value chain governance in broiler at CPI; (3 analyze the margin of marketing at broiler industry both on farm or off farm; (3 analyze the gap between the expectation and the performance of consumers (farmers upon using products of CPI and (4 recognize factors influencing competitiveness in broiler industry; and (5 to formulate strategy for value chain upgrading at CPI in order to increase competitiveness of broiler. As revealed by the value chain analysis, the role of CPI in this value chain is highly significant. All poultry inputs (DOC, feed, veterinary medicine, and poultry equipments are supplied by CPI. As for downstream sector, CPI processes broiler into its derivatives. The type of value chain governance between feed supplier, DOC, and veterinary medicine, poultry equipment, and poultry derivates belongs to market value chain. Whereas the type of value chain governance between carcass supplier and restaurant belongs to captive value chain. Based on the margin of marketing analysis, the party that gains the lowest margin is farmer and the party that receives the highest margin is the processor. In gap analysis, the lowest attribute of competitiveness is the feed spending and the highest attribute is the spending on veterinary medicine for two months. Factors that influence the competitiveness in poultry industry are condition, demand, industry competition, main industries and supporting industries, and government’s role.Keywords: Value Chain, Competitiveness, Broiler, PT. Charoen Pokphand Indonesia, Tbk, Margin of Marketing Analysis, Gap Analysis, SWOT Analysis

  15. Subgroup Discovery for Election Analysis: A Case Study in Descriptive Data Mining

    Science.gov (United States)

    Grosskreutz, Henrik; Boley, Mario; Krause-Traudes, Maike

    In this paper, we investigate the application of descriptive data mining techniques, namely subgroup discovery, for the purpose of the ad-hoc analysis of election results. Our inquiry is based on the 2009 German federal Bundestag election (restricted to the City of Cologne) and additional socio-economic information about Cologne's polling districts. The task is to describe relations between socio-economic variables and the votes in order to summarize interesting aspects of the voting behavior. Motivated by the specific challenges of election data analysis we propose novel quality functions and visualizations for subgroup discovery.

  16. Flood Risk Assessment as a Part of Integrated Flood and Drought Analysis. Case Study: Southern Thailand

    Science.gov (United States)

    Prabnakorn, Saowanit; Suryadi, Fransiscus X.; de Fraiture, Charlotte

    2015-04-01

    Flood and drought are two main meteorological catastrophes that have created adverse consequences to more than 80% of total casualties universally, 50% by flood and 31% by drought. Those natural hazards have the tendency of increasing frequency and degree of severity and it is expected that climate change will exacerbate their occurrences and impacts. In addition, growing population and society interference are the other key factors that pressure on and exacerbate the adverse impacts. Consequently, nowadays, the loss from any disasters becomes less and less acceptable bringing about more people's consciousness on mitigation measures and management strategies and policies. In general, due to the difference in their inherent characteristics and time occurrences flood and drought mitigation and protection have been separately implemented, managed, and supervised by different group of authorities. Therefore, the objective of this research is to develop an integrated mitigation measure or a management policy able to surmount both problems to acceptable levels and is conveniently monitored by the same group of civil servants which will be economical in both short- and long-term. As aforementioned of the distinction of fundamental peculiarities and occurrence, the assessment processes of floods and droughts are separately performed using their own specific techniques. In the first part of the research flood risk assessment is focused in order to delineate the flood prone area. The study area is a river plain in southern Thailand where flooding is influenced by monsoon and depression. The work is mainly concentrated on physically-based computational modeling and an assortment of tools was applied for: data completion, areal rainfall interpolation, statistical distribution, rainfall-runoff analysis and flow model simulation. The outcome from the simulation can be concluded that the flood prone areas susceptible to inundation are along the riparian areas, particularly at the

  17. Epithelial ovarian tumours: 70 cases study: prognostic value factors analysis: therapeutic results

    International Nuclear Information System (INIS)

    Viola Alles, A.; Barrios Herrera, E.; Sabini Gaye, G.; Muse Sevrini, I.

    1992-01-01

    70 cases of TEO, as well age average it plows analyzed it was 54 years. It staging in E I 23 cases(33%), in E II 17 (24%) in E III 20 (29%) and 10 (14%) in E IV. Predominate over the serous varieties with 29 casos(42%) and mucinosa with 24 (34%), the remaining was 8 endometroids,7 anaplasics and only one tumour to clear cells and of Brenner. The treatment it was surgical predominant complete or not of radiotherapy or Melfalan in those E I-II; and with systemic treatment (CMF or Hexa-CAF) for those E III-IV. The The survive to 5 years was of 77% in E I,55% in E II, 38% in E III, and 0% in E IV. It was not found that the age or other types of histologicos except for the forms anaplasics were prognostic significance factors. In the advanced forms (E III-IV), different predicts of agreement is marked with the volume residual tumoral post surgery, survival of 55% to 5 years with smaller volumes to 2cm of diameter and 0% with higher volume. It conludes in the importance of forming subgroups in which value interrelate predict that orient the processing [es

  18. Analysis and study on 47 cases of adverse reactions of Chinese medicine injection.

    Science.gov (United States)

    Zhang, Xiaoyu; Sang, Dechun; Zhang, Zhiqiang; Kong, Shuangyan

    2014-01-01

    Along with efficacy, Chinese medicine is increasingly being known to people, Chinese medicine and its preparations are increasingly widespread in clinical use. People generally believe that Chinese medicine has few side effects and is safe, especially Chinese medicine injections. Due to the direct injection in blood, rapid onset and good efficacy, they are welcomed by people. However, with increased use, adverse reactions are increasing, even causing serious consequences. The objective is to learn about the characteristics and laws of the adverse effects of Chinese medicine injections, provide references for the clinical safe drug use, and reduce the incidence of adverse reactions. The method was established to analyze the data of 47 cases of adverse reactions caused by Chinese medicine injections in our hospital from the year, 2009 to 2010. The organs / systems involved in the 47 cases of adverse reactions are primarily skin and its accessories and secondly systemic damage, involving a total of eight varieties of drugs. The adverse reactions of Chinese medicine injections are mostly in Chinese patent drugs, which should be paid attention to, to find out the problems and laws, use the drugs rationally, and reduce the incidence of the adverse reactions.

  19. APPLICATION OF FAILURE MODE & EFFECT ANALYSIS (FMEA FOR CONTINUOUS QUALITY IMPROVEMENT - MULTIPLE CASE STUDIES IN AUTOMOBILE SMES

    Directory of Open Access Journals (Sweden)

    Jigar Doshi

    2017-06-01

    Full Text Available Failure Mode and Effects Analysis (FMEA is a quality tool used to identify potential failures and related effects on processes and products, so continuous improvement in quality can be achieved by reducing them. The purpose of this research paper is to showcase the contribution of FMEA to achieve Continuous Quality Improvement (CQI by multiple case study research. The outcome research conducted by implementing FMEA; one of the Auto Core Tools (ACTs, in the automobile Small and Medium Enterprises (SMEs in Gujarat, India is presented in this paper which depict various means of Continuous Quality Improvements. The case study based research was carried out in four automobile SMEs; all of them are supplied to automotive Original Equipment Manufacturer (OEM. The FMEA was implemented with the help of Cross Functional Team (CFT to identify the potential failure modes and effects, in overall effect on Continuous Quality Improvement. The outcome of FMEA at four companies' reveals the scope of improvement exists in the manufacturing process. Implementation of those improvement points shows the definite signs of continuous improvement of the quality of process and product as well. The FMEA and subsequent implementations had reduced the quality rejections around 3% to 4% in case companies.

  20. The analysis of human error as causes in the maintenance of machines: a case study in mining companies

    Directory of Open Access Journals (Sweden)

    Kovacevic, Srdja

    2016-12-01

    Full Text Available This paper describes the two-step method used to analyse the factors and aspects influencing human error during the maintenance of mining machines. The first step is the cause-effect analysis, supported by brainstorming, where five factors and 21 aspects are identified. During the second step, the group fuzzy analytic hierarchy process is used to rank the identified factors and aspects. A case study is done on mining companies in Serbia. The key aspects are ranked according to an analysis that included experts who assess risks in mining companies (a maintenance engineer, a technologist, an ergonomist, a psychologist, and an organisational scientist. Failure to follow technical maintenance instructions, poor organisation of the training process, inadequate diagnostic equipment, and a lack of understanding of the work process are identified as the most important causes of human error.

  1. Content Analysis of Chemistry Curricula in Germany Case Study: Chemical Reactions

    Science.gov (United States)

    Timofte, Roxana S.

    2015-01-01

    Curriculum-assessment alignment is a well known foundation for good practice in educational assessment, for items' curricular validity purposes. Nowadays instruments are designed to measure pupils' competencies in one or more areas of competence. Sub-competence areas could be defined theoretically and statistical analysis of empirical data by…

  2. Deterministic versus Stochastic Sensitivity Analysis in Investment Problems : An Environmental Case Study

    NARCIS (Netherlands)

    van Groenendaal, W.J.H.; Kleijnen, J.P.C.

    2001-01-01

    Sensitivity analysis in investment problems is an important tool to determine which factors can jeopardize the future of the investment.Information on the probability distribution of those factors that affect the investment is mostly lacking.In those situations the analysts have two options: (i)

  3. Analysis of Introducing One Stop Shop Administrative Services: A Case Study of the Republic of Macedonia

    Directory of Open Access Journals (Sweden)

    Martin TODEVSKI

    2013-02-01

    Full Text Available Reforming the administrative procedures through the implementation of an e-Government programe is an on-going important process for governments around the world. The benefits of using ICT as a catalyst for increasing the efficiency of administrative procedures are well known and confirmed. The implementation of computer based information systems and providing a possibility for institutions to share data and documents among themselves will create conditions for introducing one stop shop electronic services, which will lead to simplifying administrative procedures. The new simplified administrative services will be of great benefit to citizens. Yet, the institutions will face a significant reduction in the number of issued documents required for providing administrative services, which will lead to positive financial implications. In that regard, the goal of this paper is to make an analysis of the financial aspects of introducing one stop shop services in the Republic of Macedonia by using computer based information systems. The analysis was conducted using public data for the administrative services which are currently provided by a closed set of 16 Macedonian government institutions. In this analysis we calculate the financial implications on citizens, businesses, institutions, and other entities in the society. The result of the analysis is the calculation of the overall savings for the society, which can be used by decision-makers in order to adjust the degree of investments in information systems and necessary complementary assets needed for introduction of these services.

  4. Debris flows risk analysis and direct loss estimation: the case study of Valtellina di Tirano, Italy

    Czech Academy of Sciences Publication Activity Database

    Blahůt, Jan; Glade, T.; Sterlacchini, S.

    2014-01-01

    Roč. 11, č. 2 (2014), s. 288-307 ISSN 1672-6316 Institutional support: RVO:67985891 Keywords : Debris flows * Risk analysis * Economic losses * Central Alps * Italy Subject RIV: DE - Earth Magnetism, Geodesy, Geography OBOR OECD: Physical geography Impact factor: 0.963, year: 2014

  5. The SAFE FOODS Risk Analysis Framework suitable for GMOs? A case study

    NARCIS (Netherlands)

    Kuiper, H.A.; Davies, H.V.

    2010-01-01

    This paper describes the current EU regulatory framework for risk analysis of genetically modified (GM) crop cultivation and market introduction of derived food/feed. Furthermore the risk assessment strategies for GM crops and derived food/feed as designed by the European Food Safety Authority

  6. Integration of RAMS in LCC analysis for linear transport infrastructures. A case study for railways.

    Science.gov (United States)

    Calle-Cordón, Álvaro; Jiménez-Redondo, Noemi; Morales-Gámiz, F. J.; García-Villena, F. A.; Garmabaki, Amir H. S.; Odelius, Johan

    2017-09-01

    Life-cycle cost (LCC) analysis is an economic technique used to assess the total costs associated with the lifetime of a system in order to support decision making in long term strategic planning. For complex systems, such as railway and road infrastructures, the cost of maintenance plays an important role in the LCC analysis. Costs associated with maintenance interventions can be more reliably estimated by integrating the probabilistic nature of the failures associated to these interventions in the LCC models. Reliability, Maintainability, Availability and Safety (RAMS) parameters describe the maintenance needs of an asset in a quantitative way by using probabilistic information extracted from registered maintenance activities. Therefore, the integration of RAMS in the LCC analysis allows obtaining reliable predictions of system maintenance costs and the dependencies of these costs with specific cost drivers through sensitivity analyses. This paper presents an innovative approach for a combined RAMS & LCC methodology for railway and road transport infrastructures being developed under the on-going H2020 project INFRALERT. Such RAMS & LCC analysis provides relevant probabilistic information to be used for condition and risk-based planning of maintenance activities as well as for decision support in long term strategic investment planning.

  7. Sensitivity analysis for matched pair analysis of binary data: From worst case to average case analysis.

    Science.gov (United States)

    Hasegawa, Raiden; Small, Dylan

    2017-12-01

    In matched observational studies where treatment assignment is not randomized, sensitivity analysis helps investigators determine how sensitive their estimated treatment effect is to some unmeasured confounder. The standard approach calibrates the sensitivity analysis according to the worst case bias in a pair. This approach will result in a conservative sensitivity analysis if the worst case bias does not hold in every pair. In this paper, we show that for binary data, the standard approach can be calibrated in terms of the average bias in a pair rather than worst case bias. When the worst case bias and average bias differ, the average bias interpretation results in a less conservative sensitivity analysis and more power. In many studies, the average case calibration may also carry a more natural interpretation than the worst case calibration and may also allow researchers to incorporate additional data to establish an empirical basis with which to calibrate a sensitivity analysis. We illustrate this with a study of the effects of cellphone use on the incidence of automobile accidents. Finally, we extend the average case calibration to the sensitivity analysis of confidence intervals for attributable effects. © 2017, The International Biometric Society.

  8. Characterization of a Flood Event through a Sediment Analysis: The Tescio River Case Study

    Directory of Open Access Journals (Sweden)

    Silvia Di Francesco

    2016-07-01

    Full Text Available This paper presents the hydrological analysis and grain size characteristics of fluvial sediments in a river basin and their combination to characterize a flood event. The overall objective of the research is the development of a practical methodology based on experimental surveys to reconstruct the hydraulic history of ungauged river reaches on the basis of the modifications detected on the riverbed during the dry season. The grain size analysis of fluvial deposits usually requires great technical and economical efforts and traditional sieving based on physical sampling is not appropriate to adequately represent the spatial distribution of sediments in a wide area of a riverbed with a reasonable number of samples. The use of photographic sampling techniques, on the other hand, allows for the quick and effective determination of the grain size distribution, through the use of a digital camera and specific graphical algorithms in large river stretches. A photographic sampling is employed to characterize the riverbed in a 3 km ungauged reach of the Tescio River, a tributary of the Chiascio River, located in central Italy, representative of many rivers in the same geographical area. To this end, the particle size distribution is reconstructed through the analysis of digital pictures of the sediments taken on the riverbed in dry conditions. The sampling has been performed after a flood event of known duration, which allows for the identification of the removal of the armor in one section along the river reach under investigation. The volume and composition of the eroded sediments made it possible to calculate the average flow rate associated with the flood event which caused the erosion, by means of the sediment transport laws and the hydrological analysis of the river basin. A hydraulic analysis of the river stretch under investigation was employed to verify the validity of the proposed procedure.

  9. A gap analysis methodology for collecting crop genepools: a case study with phaseolus beans.

    Directory of Open Access Journals (Sweden)

    Julián Ramírez-Villegas

    Full Text Available BACKGROUND: The wild relatives of crops represent a major source of valuable traits for crop improvement. These resources are threatened by habitat destruction, land use changes, and other factors, requiring their urgent collection and long-term availability for research and breeding from ex situ collections. We propose a method to identify gaps in ex situ collections (i.e. gap analysis of crop wild relatives as a means to guide efficient and effective collecting activities. METHODOLOGY/PRINCIPAL FINDINGS: The methodology prioritizes among taxa based on a combination of sampling, geographic, and environmental gaps. We apply the gap analysis methodology to wild taxa of the Phaseolus genepool. Of 85 taxa, 48 (56.5% are assigned high priority for collecting due to lack of, or under-representation, in genebanks, 17 taxa are given medium priority for collecting, 15 low priority, and 5 species are assessed as adequately represented in ex situ collections. Gap "hotspots", representing priority target areas for collecting, are concentrated in central Mexico, although the narrow endemic nature of a suite of priority species adds a number of specific additional regions to spatial collecting priorities. CONCLUSIONS/SIGNIFICANCE: Results of the gap analysis method mostly align very well with expert opinion of gaps in ex situ collections, with only a few exceptions. A more detailed prioritization of taxa and geographic areas for collection can be achieved by including in the analysis predictive threat factors, such as climate change or habitat destruction, or by adding additional prioritization filters, such as the degree of relatedness to cultivated species (i.e. ease of use in crop breeding. Furthermore, results for multiple crop genepools may be overlaid, which would allow a global analysis of gaps in ex situ collections of the world's plant genetic resources.

  10. Building energy performance analysis by an in-house developed dynamic simulation code: An investigation for different case studies

    International Nuclear Information System (INIS)

    Buonomano, Annamaria; Palombo, Adolfo

    2014-01-01

    Highlights: • A new dynamic simulation code for building energy performance analysis is presented. • The thermal behavior of each building element is modeled by a thermal RC network. • The physical models implemented in the code are illustrated. • The code was validated by the BESTEST standard procedure. • We investigate residential buildings, offices and stores in different climates. - Abstract: A novel dynamic simulation model for the building envelope energy performance analysis is presented in this paper. This tool helps the investigation of many new building technologies to increase the system energy efficiency and it can be carried out for scientific research purposes. In addition to the yearly heating and cooling load and energy demand, the obtained output is the dynamic temperature profile of indoor air and surfaces and the dynamic profile of the thermal fluxes through the building elements. The presented simulation model is also validated through the BESTEST standard procedure. Several new case studies are developed for assessing, through the presented code, the energy performance of three different building envelopes with several different weather conditions. In particular, dwelling and commercial buildings are analysed. Light and heavyweight envelopes as well as different glazed surfaces areas have been used for every case study. With the achieved results interesting design and operating guidelines can be obtained. Such data have been also compared vs. those calculated by TRNSYS and EnergyPlus. The detected deviation of the obtained results vs. those of such standard tools are almost always lower than 10%

  11. SWOT analysis of program design and implementation: a case study on the reduction of maternal mortality in Afghanistan.

    Science.gov (United States)

    Ahmadi, Qudratullah; Danesh, Homayoon; Makharashvili, Vasil; Mishkin, Kathryn; Mupfukura, Lovemore; Teed, Hillary; Huff-Rousselle, Maggie

    2016-07-01

    This case study analyzes the design and implementation of the Basic Package of Health Services (BPHS) in Afghanistan by synthesizing the literature with a focus on maternal health services. The authors are a group of graduate students in the Brandeis University International Health Policy and Management Program and Sustainable International Development Program who used the experience in Afghanistan to analyze an example of successfully implementing policy; two of the authors are Afghan physicians with direct experience in implementing the BPHS. Data is drawn from a literature review, and a unique aspect of the case study is the application of the business-oriented SWOT analysis to the design and implementation of the program that successfully targeted lowering maternal mortality in Afghanistan. It provides a useful example of how SWOT analysis can be used to consider the reasons for, or likelihood of, successful or unsuccessful design and implementation of a policy or program. Copyright © 2015 John Wiley & Sons, Ltd. Copyright © 2015 John Wiley & Sons, Ltd.

  12. In vitro metabolism studies on mephedrone and analysis of forensic cases

    DEFF Research Database (Denmark)

    Pedersen, Anders Just; Reitzel, Lotte Ask; Johansen, Sys Stybe

    2013-01-01

    The stimulant designer drug mephedrone is a derivative of cathinone - a monoamine alkaloid found in khat - and its effect resembles that of 3,4-Methylenedioxymethamphetamine (MDMA). Abuse of mephedrone has been documented since 2007; it was originally a 'legal high' drug, but it has now been banned...... in most Western countries. Using cDNA-expressed CYP enzymes and human liver microsomal preparations, we found that cytochrome P450 2D6 (CYP2D6) was the main responsible enzyme for the in vitro Phase I metabolism of mephedrone, with some minor contribution from other NAPDH-dependent enzymes. Hydroxytolyl-mephedrone...... and nor-mephedrone were formed in vitro, and the former was purified and identified by nuclear magnetic resonance (NMR). In four forensic traffic cases where mephedrone was detected, we identified hydroxytolyl-mephedrone and nor-mephedrone again; as well as 4-carboxy-dihydro-mephedrone, which has been...

  13. Failure analysis of a repairable system: The case study of a cam-driven reciprocating pump

    Science.gov (United States)

    Dudenhoeffer, Donald D.

    1994-09-01

    This thesis supplies a statistical and economic tool for analysis of the failure characteristics of one typical piece of equipment under evaluation: a cam-driven reciprocating pump used in the submarine's distillation system. Comprehensive statistical techniques and parametric modeling are employed to identify and quantify pump failure characteristics. Specific areas of attention include: the derivation of an optimal maximum replacement interval based on costs, an evaluation of the mission reliability for the pump as a function of pump age, and a calculation of the expected times between failures. The purpose of this analysis is to evaluate current maintenance practices of time-based replacement and examine the consequences of different replacement intervals in terms of costs and mission reliability. Tradeoffs exist between cost savings and system reliability that must be fully understood prior to making any policy decisions.

  14. SWOT analysis of the renewable energy sources in Romania - case study: solar energy

    Science.gov (United States)

    Lupu, A. G.; Dumencu, A.; Atanasiu, M. V.; Panaite, C. E.; Dumitrașcu, Gh; Popescu, A.

    2016-08-01

    The evolution of energy sector worldwide triggered intense preoccupation on both finding alternative renewable energy sources and environmental issues. Romania is considered to have technological potential and geographical location suitable to renewable energy usage for electricity generation. But this high potential is not fully exploited in the context of policies and regulations adopted globally, and more specific, European Union (EU) environmental and energy strategies and legislation related to renewable energy sources. This SWOT analysis of solar energy source presents the state of the art, potential and future prospects for development of renewable energy in Romania. The analysis concluded that the development of solar energy sector in Romania depends largely on: viability of legislative framework on renewable energy sources, increased subsidies for solar R&D, simplified methodology of green certificates, and educating the public, investors, developers and decision-makers.

  15. Customer preferences using conjoint analysis: A case study of Auto industry

    Directory of Open Access Journals (Sweden)

    Bagher Jamali Hondori

    2013-10-01

    Full Text Available One of the primary concerns in product development is to meet customers’ wishes and this could be accomplished through detecting the most popular characteristics of products. In other words, the fulfillment of customers’ preferences in a profitable way needs that companies recognize which specifications of their product and service are most valued by the customer. Conjoint analysis is believed to be one of the most popular techniques for achieving this purpose. Conjoint analysis includes generating and conducting specific experiments among customers for modeling their purchasing decision. This paper presents an empirical investigation on detecting appropriate customer preferences in an auto-industry. The results of the survey indicate that price, braking system and having airbag are the most important characteristics for selling cars in Iranian market.

  16. APPLICATION OF PENALTY ANALYSIS TO INTERPRET JAR DATA – A CASE STUDY ON ORANGE JUICES

    Directory of Open Access Journals (Sweden)

    Dida Iserliyska

    2017-07-01

    Full Text Available Penalty analysis is a graphical technique to reveal the possible penalty paid by the product in terms of reduced overall liking by not being Just About Right (JAR on a characteristic. Thus consumer affective tests were conducted to investigate the use of penalty analysis to model consumer acceptance of six well-known brands of orange juice using the proposed method to infer the drivers of liking from JAR data. Just-about-right (JAR and hedonic ratings were used to measure each attribute evaluated. Consumers (n=81 were asked to rate the overall acceptance using a 9-point hedonic scale. Just About Right (JAR scales were used to evaluate the rest of the attributes as followed: color, sweet taste, sour taste, bitter taste and amount of pulp. Means and frequencies of each sensory attribute were obtained. Spearman's rank correlation coefficients gave the relationship between the sensory attributes and the overall liking.

  17. A Semiotic Analysis of the Gender Equality Paradigm. Case study: the Gender Pay Gap Campaign

    Directory of Open Access Journals (Sweden)

    Mădălina Manolache

    2010-11-01

    Full Text Available Within the new European space of identity, attitude and action challenges, syntagms such as “unity in diversity” or “equal pay for work of equal value” have become identitarian brands for social groups with a high-level of self-awareness. Having the social semiotics (Kress, van Leeuwen [1996] 2006 as theoretical background, we focused our analysis on the gender equality paradigm. The empirical data were provided by four visual texts of the Gender Pay Gap campaign, initiated by the European Commission in March 2009, in order to map the new European “puzzle-space” . The analysis showed the importance of compositional, representational and interactive meanings within the European discourse on equality of chances and gender.

  18. Simulation Analysis of a Fabrication Process of a Tannery: Case Study of a Latin American Company

    Directory of Open Access Journals (Sweden)

    Carolina Pirachicán-Mayorga

    2017-12-01

    Full Text Available A large number of real-life optimization problems in economics and business are complex and difficult to solve. Among the solutions techniques available in the Management Sciences, Discrete-Event computer Simulation (DES can be considered as one of the most preferred by practitioners. DES has been used as an analysis tool to evaluate new production system concepts, and has also been used in the operation and planning of manufacturing facilities. In this paper, we propose to apply DES for the analysis of a tannery manufacturing facility. The objective is to analyze the current performance of the production system in order to propose alternatives for improvement, as well as optimum parameters for production. Results obtained showed the advantages of using such a quantitative decision-aid technique by capturing most of the complexity characteristics of the production process.

  19. ANALYSIS OF MARKETING MIX ON COSMETICS PRODUCTS CASE STUDY: AVON COMPANY

    Directory of Open Access Journals (Sweden)

    ALEXANDRA PALADE

    2011-01-01

    Full Text Available This paper contains an analysis of the marketing mix followed by a Swot analysis of company Avon. It continues with a market research conducted among women in Brasov highlighting the attitudes, opinions and behaviour of women in Brasov on the acquisition and use of cosmetics product. The present paper analyzes the cosmetics market, the company Avon position in Brasov’s market, identifying the company’s main competitors, population segmentation. After analyzing data from market research shows that most women acquires cosmetic products from Avon company, the representatives role being extremely important. Most women buy products through the catalogue, 77% of them using the products every day, often buying the personal care products.

  20. Historical Analysis of Population Reactions to Stimuli - A Case Study of the Solomon Islands

    Science.gov (United States)

    2007-03-01

    violence and lawlessness in Gizo. In October the final Peace Agreement was brokered in Townsville, Australia , and was known as the Townsville Peace...Box 1500 Edinburgh South Australia 5111 Australia Telephone: (08) 8259 5555 Fax: (08) 8259 6567 © Commonwealth of Australia 2007 AR 013...given here. Historical events occur only once and hence the data do not support statistical analysis to identify an average result. To obtain an

  1. Methods for Analysis of Urban Energy Systems: A New York City Case Study

    Science.gov (United States)

    Howard, Bianca

    This dissertation describes methods developed for analysis of the New York City energy system. The analysis specifically aims to consider the built environment and its' impacts on greenhouse gas (GHG) emissions. Several contributions to the urban energy systems literature were made. First, estimates of annual energy intensities of the New York building stock were derived using a statistical analysis that leveraged energy consumption and tax assessor data collected by the Office of the Mayor. These estimates provided the basis for an assessment of the spatial distribution of building energy consumption. The energy consumption estimates were then leveraged to estimate the potential for combined heat and power (CHP) systems in New York City at both the building and microgrid scales. In aggregate, given the 2009 non-baseload GHG emissions factors for electricity production, these systems could reduce citywide GHG emissions by 10%. The operational characteristics of CHP systems were explored further considering different prime movers, climates, and GHG emissions factors. A combination of mixed integer linear programing and controlled random search algorithms were the methods used to determine the optimal capacity and operating strategies for the CHP systems under the various scenarios. Lastly a multi-regional unit commitment model of electricity and GHG emissions production for New York State was developed using data collected from several publicly available sources. The model was used to estimate average and marginal GHG emissions factors for New York State and New York City. The analysis found that marginal GHG emissions factors could reduce by 30% to 370 g CO2e/kWh in the next 10 years.

  2. Medical Tourism Destination SWOT Analysis: A Case Study of Malaysia, Thailand, Singapore and India

    OpenAIRE

    Wong Kee Mun; Velasamy Peramarajan; Tengku Arshad Tengku Nuraina

    2014-01-01

    The growth of global medical tourism in the recent years had spurred the interest of many governments to join in the bandwagon, particularly from Asia. Using the SWOT analytical model, this paper provides pertinent comparative analysis of the medical tourism destinations here being Malaysia, Thailand, Singapore and India. Each destination possesses its own value propositions to convince the demands of medical tourists. Malaysia and Thailand have a good mixture of elements (medical, tourism an...

  3. Analysis of social responsibility practices and actions. A case study in Cun corporation. Magdalena region

    Directory of Open Access Journals (Sweden)

    Devinso Jiménez Sierra

    2016-11-01

    Full Text Available The project will analyze the policies, practices and social responsibility plans of the Unified Regional Higher Education Corporation Magdalena today, in order to promote corporate memory related to CSR through a measurement model based on eight indicators related to changing economic, social and environmental stakelholders practices. The analysis also seeks to measure the correlation between CSR practices implemented and perceived levels of the most influential stakeholders of the corporation.

  4. Use of production-function analysis in forest management: eucalypts in Brazil, a case study

    Energy Technology Data Exchange (ETDEWEB)

    Nautiyal, J.C.; Conto, L.

    1982-01-01

    Production-function analysis was applied to data from spacing research on a hybrid of Eucalyptus urophylla. A logarithmic-reciprocal equation was chosen as the best fitting production function, and its elasticities of production, scale and substitution computed. A set of input quantities is presented which maximize the present net worth of an infinite number of forest cycles for a range of discount rates.

  5. Hydrodynamic analysis of potential groundwater extraction capacity increase: case study of 'Nelt' groundwater source at Dobanovci

    Directory of Open Access Journals (Sweden)

    Bajić Dragoljub I.

    2017-01-01

    Full Text Available A comprehensive hydrodynamic analysis of the groundwater regime undertaken to assess the potential for expanding the 'Nelt' groundwater source at Dobanovci, or developing a new groundwater source for a future baby food factory, including the quantification of the impact on the production wells of the nearby 'Pepsi' groundwater source, is presented in the paper. The existing Nelt source is comprised of three active production wells that tap a subartesian aquifer formed in sands and gravelly sands; however, the analysis considers only the two nearest wells. A long-term group pumping test was con-ducted of production wells N-1 and N2 (Nelt source and production wells B-1 and B-2 (Pepsi source, while the piezometric head in the vicinity of these wells was monitored at observation well P-1, which is located in the area considered for Nelt source expansion. Data were collected at maximum pumping capacity of all the production wells. A hydrodynamic model of groundwater flow in the extended area of the Nelt source was generated for the purposes of the comprehensive hydrodynamic analysis. Hydrodynamic prognostic calculations addressed two solution alternatives for the capacity increase over a period of ten years. Licensed Visual MODFLOW Pro software, deemed to be at the very top in this field, was used for the calculations.

  6. Heat demand mapping and district heating grid expansion analysis: Case study of Velika Gorica

    Directory of Open Access Journals (Sweden)

    Dorotić Hrvoje

    2017-01-01

    Full Text Available Highly efficient cogeneration and district heating systems have a significant potential for primary energy savings and the reduction of greenhouse gas emissions through the utilization of a waste heat and renewable energy sources. These potentials are still highly underutilized in most European countries. They also play a key role in the planning of future energy systems due to their positive impact on the increase of integration of intermittent renewable energy sources, for example wind and solar in a combination with power to heat technologies. In order to ensure optimal levels of district heating penetration into an energy system, a comprehensive analysis is necessary to determine the actual demands and the potential energy supply. Economical analysis of the grid expansion by using the GIS based mapping methods hasn’t been demonstrated so far. This paper presents a heat demand mapping methodology and the use of its output for the district heating network expansion analysis. The result are showing that more than 59% of the heat demand could be covered by the district heating in the city of Velika Gorica, which is two times more than the present share. The most important reason of the district heating's unfulfilled potential is already existing natural gas infrastructure.

  7. The conceptualization of childhood in North American pediatric dentistry texts: a discursive case study analysis.

    Science.gov (United States)

    Makansi, Nora; Carnevale, Franco A; Macdonald, Mary Ellen

    2018-03-01

    In recent years, conceptions of childhood have been evolving towards an increased recognition of children as active agents, capable of participating in the determination of their wellbeing. In pediatric dentistry, the extent to which these conceptions are being discursively endorsed is not well known. The aim of this investigation was to examine the discursive construction of childhood in seminal North American pedagogical dentistry materials. We conducted a qualitative discourse analysis of a sample of prominent texts using a sociological discourse analysis approach. We analyzed the latest edition of Macdonald and Avery's textbook (Chapter: Non pharmacologic management of children's behaviors) and the clinical practice guidelines published by the American Academy of Pediatric Dentistry, AAPD (Behavior guidance for the pediatric dental patient). The analysis produced five salient discursive categories: socialization through behavior modification; development and behavior; paternalism; the utility of child-centered communication; and consequentialism. While there were instances of a child-centered focus in the texts, the main discourses were rooted in developmentalism and behaviorism. There was scant acknowledgment of the importance of children's agency or voice, which runs contrary to child-centered discourses and practices in related disciplines (e.g., pediatric medicine, nursing). Predominant discourses in pediatric dentistry suggest a paternalistic, behaviorist approach to the 'management' of children in the dental office, focused primarily on completing interventions. Priorities for the future development of pediatric dentistry are discussed, integrating more child-centered approaches. © 2017 BSPD, IAPD and John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  8. AN ANALYSIS OF SALES INFORMATION SYSTEM AND COMPETITIVE ADVANTAGE (Study Case of UD. Citra Helmet

    Directory of Open Access Journals (Sweden)

    Hendra Alianto

    2012-10-01

    Full Text Available Business development in this era of globalization leads companies to use information system in running business relationship by changing the traditional way of working in non-integrated information systems into integrated information systems. The intended use of the integrated information system will improve the effective and efficient way of working, such as the availability of information in real-time, accurate and informative for decision-making for the benefit of operational activities, as well as decision-making for strategic interests and the company’s business development. Especially with the application of sales information system, it will improve the company’s performance and will affect the competitiveness of companies, which can ultimately increase the maximum profit. However, in reality it is not easy to implement the integrated information system, because it is influenced by the customs, culture and mindset of the user company. It is necessary for running system analysis activity and building an integrated information system by concerning into the needs of users, management, customers and stakeholders. The implementation of integrated information system will increase productivity and achieve the effectiveness and efficiency level of company’s operations, through the analysis of sales information system will affect the competitiveness of companies.Keywords: Sales Information System Analysis

  9. Heat demand mapping and district heating grid expansion analysis: Case study of Velika Gorica

    Science.gov (United States)

    Dorotić, Hrvoje; Novosel, Tomislav; Duić, Neven; Pukšec, Tomislav

    2017-10-01

    Highly efficient cogeneration and district heating systems have a significant potential for primary energy savings and the reduction of greenhouse gas emissions through the utilization of a waste heat and renewable energy sources. These potentials are still highly underutilized in most European countries. They also play a key role in the planning of future energy systems due to their positive impact on the increase of integration of intermittent renewable energy sources, for example wind and solar in a combination with power to heat technologies. In order to ensure optimal levels of district heating penetration into an energy system, a comprehensive analysis is necessary to determine the actual demands and the potential energy supply. Economical analysis of the grid expansion by using the GIS based mapping methods hasn't been demonstrated so far. This paper presents a heat demand mapping methodology and the use of its output for the district heating network expansion analysis. The result are showing that more than 59% of the heat demand could be covered by the district heating in the city of Velika Gorica, which is two times more than the present share. The most important reason of the district heating's unfulfilled potential is already existing natural gas infrastructure.

  10. High quality transmission Kikuchi diffraction analysis of deformed alloys - Case study

    International Nuclear Information System (INIS)

    Tokarski, Tomasz; Cios, Grzegorz; Kula, Anna; Bała, Piotr

    2016-01-01

    Modern scanning electron microscopes (SEM) equipped with thermally assisted field emission guns (Schottky FEG) are capable of imaging with a resolution in the range of several nanometers or better. Simultaneously, the high electron beam current can be used, which enables fast chemical and crystallographic analysis with a higher resolution than is normally offered by SEM with a tungsten cathode. The current resolution that limits the EDS and EBSD analysis is related to materials' physics, particularly to the electron-specimen interaction volume. The application of thin, electron-transparent specimens, instead of bulk samples, improves the resolution and allows for the detailed analysis of very fine microstructural features. Beside the typical imaging mode, it is possible to use a standard EBSD camera in such a configuration that only transmitted and scattered electrons are detected. This modern approach was successfully applied to various materials giving rise to significant resolution improvement, especially for the light element magnesium based alloys. This paper presents an insight into the application of the transmission Kikuchi diffraction (TKD) technique applied to the most troublesome, heavily-deformed materials. In particular, the values of the highest possible acquisition rates for high resolution and high quality mapping were estimated within typical imaging conditions of stainless steel and magnesium-yttrium alloy. - Highlights: •Monte Carlo simulations were used to simulate EBSD camera intensity for various measuring conditions. •Transmission Kikuchi diffraction parameters were evaluated for highly deformed, light and heavy elements based alloys. •High quality maps with 20 nm spatial resolution were acquired for Mg and Fe based alloys. •High speed TKD measurements were performed at acquisition rates comparable to the reflection EBSD.

  11. Dynamic energy performance analysis: Case study for energy efficiency retrofits of hospital buildings

    International Nuclear Information System (INIS)

    Buonomano, Annamaria; Calise, Francesco; Ferruzzi, Gabriele; Palombo, Adolfo

    2014-01-01

    This paper investigates several actions for the energy refurbishment of some buildings of the University Hospital Federico II of Naples. The analysis focuses on a specific lot of 4 buildings, representative of the whole district hospital. For those structures, sustainable energy savings actions are investigated. They regard the installation of: i) roofs thermal insulation; ii) a substation climatic 3-way valve; iii) radiators thermostatic valves; iv) AHU (air handling unit) time-programmable regulation. This paper aims at presenting an investigation methodology, useful for designers and other stakeholders involved in hospital energy refurbishments, based on an integrated approach which combines dynamic energy performance simulations and experimental campaigns. In order to measure all the simulations' missing input parameters, a suitable experimental analysis, including measurements of temperature, humidity, flow rate and density of construction materials, is performed. A thermographic investigation is also performed for investigating the building envelope performance. This analysis showed that significant savings can be achieved especially by adopting radiators thermostatic valves and AHU regulations. Coherently, the installation of a 3-way valve in the substation does not determine significant additional savings when radiators thermostatic valves are already installed. For high-rise buildings, roofs insulation returns only marginal reductions of space heating and cooling demands. - Highlights: • Energy saving measures applied to the largest hospital of South Italy are analyzed. • A new approach combining dynamic simulations and measurements is implemented. • Thermography, temperature and flow measurements are performed. • High savings are achieved by adopting thermostatic valves and AHU control systems. • The simplest energy saving actions resulted to be the most profitable ones

  12. Space Shuttle Rudder Speed Brake Actuator-A Case Study Probabilistic Fatigue Life and Reliability Analysis

    Science.gov (United States)

    Oswald, Fred B.; Savage, Michael; Zaretsky, Erwin V.

    2015-01-01

    The U.S. Space Shuttle fleet was originally intended to have a life of 100 flights for each vehicle, lasting over a 10-year period, with minimal scheduled maintenance or inspection. The first space shuttle flight was that of the Space Shuttle Columbia (OV-102), launched April 12, 1981. The disaster that destroyed Columbia occurred on its 28th flight, February 1, 2003, nearly 22 years after its first launch. In order to minimize risk of losing another Space Shuttle, a probabilistic life and reliability analysis was conducted for the Space Shuttle rudder/speed brake actuators to determine the number of flights the actuators could sustain. A life and reliability assessment of the actuator gears was performed in two stages: a contact stress fatigue model and a gear tooth bending fatigue model. For the contact stress analysis, the Lundberg-Palmgren bearing life theory was expanded to include gear-surface pitting for the actuator as a system. The mission spectrum of the Space Shuttle rudder/speed brake actuator was combined into equivalent effective hinge moment loads including an actuator input preload for the contact stress fatigue and tooth bending fatigue models. Gear system reliabilities are reported for both models and their combination. Reliability of the actuator bearings was analyzed separately, based on data provided by the actuator manufacturer. As a result of the analysis, the reliability of one half of a single actuator was calculated to be 98.6 percent for 12 flights. Accordingly, each actuator was subsequently limited to 12 flights before removal from service in the Space Shuttle.

  13. ANALYSIS OF URBAN FOREST CARBON SEQUESTRATION CAPACITY: A CASE STUDY OF ZENGDU, SUIZHOU

    Directory of Open Access Journals (Sweden)

    X. Yu

    2017-09-01

    Full Text Available Carbon-fixing and oxygen-releasing is an important content of forest ecosystem serving in city. Analysis of forest ecosystem carbon sequestration capacity can provide scientific reference for urban forest management strategies. Taking Zengdu of Suizhou as an example, CITYGREEN model was applied to calculate the carbon sequestration benefits of urban forest ecosystem in this paper. And the carbon sequestration potential of urban forest ecosystem following the returning of farmland to forest land is also evaluated. The results show that forest area, percent tree cover, and the structure of forest land were the major factors reflecting regional carbon sequestration capacity.

  14. Application of multi-criteria analysis and GIS in ecotourism development (Case study: Serbian Danube region

    Directory of Open Access Journals (Sweden)

    Stojković Sanja

    2015-01-01

    Full Text Available Ecotourism can be defined as responsible travel to natural areas that conserves the environment and cultural heritage and improves the well-being of local people. Sustainable planning and management of ecotourism development are important and necessary for increasing positive and decreasing negative effects on the complex environment. This paper analyses the suitability of selected protected natural areas in the Serbian Danube region for the purposes of ecotourism development. The multi-criteria analysis includes several natural and socio-economic factors and criteria which influence ecotourism development. The integration of Geographic Information System (GIS and Analytic Hierarchy Process (AHP greatly facilitates the decision-making process in the ecotourism destination planning. A suitability map of the analysed protected natural areas for ecotourism development as one of the sustainable tourism types is highlighted as a result of this paper. Such analysis assists in the objective promotion of ecotourism destinations and thus contributes to the improvement of Serbian tourism development. [Projekat Ministarstva nauke Republike Srbije, br. 176008

  15. Data reconciliation, structure analysis and simulation of waste flows: case study Vienna.

    Science.gov (United States)

    Matyus, Thomas; Gleiss, Andreas; Gruber, Karl; Bauer, Gerd

    2003-04-01

    The management of complex waste flow systems requires a systematic approach for the handling of data, for obtaining a consistent picture of the system under consideration, and for simulating various policy scenarios and evaluating material control strategies. In this paper the implementation of a useful methodology is presented, which has been developed in previous works and is further enhanced for modelling, identifying, analysing and simulating material flow systems for which at most one measurement per flow is available for a single balancing period. The methodology enables the analyst to cope with missing data and uncertainty in the measurements. A data reconciliation procedure is used to minimise the uncertainty concerning flows by exploiting the redundancies created by restricting the available data to fulfil the available structural information. Statistical tests are introduced to enable the user to check the compatibility of the data with the a priori information. The origins analysis and destination analysis tools allow for a deeper insight into the system structure. Policy scenarios can be treated using the simulation tools. The waste flow system of the city of Vienna has been chosen to demonstrate step-by-step the procedure for building a reliable model and the effective application of the above mentioned methods and tools. Current and future research focuses on models balancing different interrelated quantities simultaneously and on incorporating stock accumulation and depletion behaviour.

  16. Hybrid Semantic Analysis of Tweets: A Case Study of Tweets on Girl-Child in India

    Directory of Open Access Journals (Sweden)

    M. Madhukar

    2017-10-01

    Full Text Available Social networks have become one of the major and important parts of daily life. Besides sharing ones views the social networking sites can also be very efficiently used to judge the behavior and attitude of individuals towards the posts. Analysis of the mood of public on a particular social issue can be judged by several methods. Analysis of the society mood towards any particular news in form of tweets is investigated in this paper. The key objective behind this research is to increase the accuracy and effectiveness of the classification by the process of Natural Language Processing (NLP Techniques while focusing on semantics and World Sense Disambiguation. The process of classification includes the combination of the effect of various independent classifiers on one particular classification problem. The data that is available in the form of tweets on twitter can easily frame the insight of the public attitude towards the particular tweet. The proposed work implements a hybrid method that includes Hybrid K, clustering and boosting. A comparison of this scheme versus a K-means/SVM approach is provided. Results are shown and discussed.

  17. Social Media Meets Big Urban Data: A Case Study of Urban Waterlogging Analysis.

    Science.gov (United States)

    Zhang, Ningyu; Chen, Huajun; Chen, Jiaoyan; Chen, Xi

    2016-01-01

    With the design and development of smart cities, opportunities as well as challenges arise at the moment. For this purpose, lots of data need to be obtained. Nevertheless, circumstances vary in different cities due to the variant infrastructures and populations, which leads to the data sparsity. In this paper, we propose a transfer learning method for urban waterlogging disaster analysis, which provides the basis for traffic management agencies to generate proactive traffic operation strategies in order to alleviate congestion. Existing work on urban waterlogging mostly relies on past and current conditions, as well as sensors and cameras, while there may not be a sufficient number of sensors to cover the relevant areas of a city. To this end, it would be helpful if we could transfer waterlogging. We examine whether it is possible to use the copious amounts of information from social media and satellite data to improve urban waterlogging analysis. Moreover, we analyze the correlation between severity, road networks, terrain, and precipitation. Moreover, we use a multiview discriminant transfer learning method to transfer knowledge to small cities. Experimental results involving cities in China and India show that our proposed framework is effective.

  18. Descriptive Analysis of Title VII-Funded State Education Agency Activities. Volume II: Nine Case Studies.

    Science.gov (United States)

    Nava, Hector; And Others

    Results of a national study of the use of funds provided by the 1974 amendments to Title VII of the Elementary and Secondary Education Act by the state education agencies (SEAs) are presented. The study was undertaken to (1) describe and analyze SEA policies and activities regarding bilingual education, (2) describe and analyze the SEA-level…

  19. Facilitating Group Analysis of Two Case Studies Utilising Peer Tutoring: Comparison of Tasks and Outcomes

    Science.gov (United States)

    Fong, Lin Siew

    2016-01-01

    Peer-tutoring sessions of two groups of advanced diploma in financial accounting students with mixed proficiency were analysed thoroughly in this study. Numerous studies in peer tutoring have produced favourable results to both tutors and tutees due to the scaffolding process which promotes effective learning. However, there is a lack of studies…

  20. 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…

  1. An Analysis of Errors in Written English Sentences: A Case Study of Thai EFL Students

    Science.gov (United States)

    Sermsook, Kanyakorn; Liamnimit, Jiraporn; Pochakorn, Rattaneekorn

    2017-01-01

    The purposes of the present study were to examine the language errors in a writing of English major students in a Thai university and to explore the sources of the errors. This study focused mainly on sentences because the researcher found that errors in Thai EFL students' sentence construction may lead to miscommunication. 104 pieces of writing…

  2. Case-control studies on the relationship between onchocerciasis and epilepsy: systematic review and meta-analysis.

    Directory of Open Access Journals (Sweden)

    Christoph Kaiser

    Full Text Available OBJECTIVE: A systematic review and meta-analysis of all available case-control studies on the relationship between onchocerciasis and epilepsy. Because age and level of onchocerciasis endemicity in the area of residence are major determinants for infection, an additional analysis was performed, restricted to studies achieving control of these confounding factors. DATA SOURCES: Medical databases, the "African Neurology Database, Institute of Neuroepidemiology and Tropical Neurology, Limoges," reference lists of relevant articles, commercial search engines, up to May 2012. METHODS: We searched for studies examining infection status with Onchocerca volvulus in persons with epilepsy (PWE and without epilepsy (PWOE providing data suitable for the calculation of pooled odds ratios (ORp and/or standardized mean differences (SMD using random-effects models. RESULTS: Eleven studies providing data of qualitative skin biopsies for diagnosis of onchocerciasis were identified. Combined analysis on the total sample of 876 PWE and 4712 PWOE resulted in an ORp of 2.49 (95% confidence interval (95%CI: 1.61-3.86, p<0.001. When this analysis was restricted to those studies achieving control for age, residence and sex (367 PWE, 624 PWOE, an ORp of 1.29 (95% CI: 0.93-1.79; p = 0.139 was found. Presence of nodules for diagnosis of onchocerciasis was analyzed in four studies (225 PWE, 189 PWOE; ORp 1.74; 95%CI: 0.94-3.20; p<0.076, including two studies of the restricted analysis (106 PWE, 106 PWOE; ORp 2.81; 95%CI: 1.57-5.00; p<0.001. One study examined quantitative microfilariae counts in patients without preceding microfilaricidal treatment and demonstrated significantly higher counts in PWE than in PWOE. INTERPRETATION: Our results strengthen the hypothesis that, in onchocerciasis foci, epilepsy and infection with O. volvulus are associated. Analysis of indicators giving information on infection intensity, namely nodule palpation and quantitative microfilaria

  3. 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.

  4. The Requel: Between the Remake and the Sequel. Jurassic World as a Case Study Analysis

    Directory of Open Access Journals (Sweden)

    Irene RAYA BRAVO

    2017-06-01

    Full Text Available In the audiovisual field, the expansion of the stories is, specifically, materialized through remakes, adaptations and franchises. In this context, the remakes or new versions are recurrent formulas because they recover familiar contents for audiences and, at the same time, they reinvent it in order to capture new generations’ attention. Nevertheless, the remake formula has been changing in the new millennium, adapting to new narrative trends. In recent years, because of the rise of intertextuality and the increasing value of nostalgia, many films have been produced halfway between the remake and the sequel, such as Star Wars. Episode VII: The Force Awakens or Terminator Genisys. In particular, the aim of this paper is to make a comparative analysis between Jurassic Park and Jurassic World because, although this last film extends the original discourse as a sequel, it also offers a reinterpretation of the first film.

  5. Analysis of physical flows in primary commodity trade. A case study in China

    International Nuclear Information System (INIS)

    Ma, Tao; Li, Bo; Fang, Changming; Zhao, Bin; Luo, Yiqi; Chen, Jiakuan

    2006-01-01

    How globalization and international trade affect sustainable development and environment has attracted worldwide attention. Associated with the import and export of primary commodities, ecologically important materials have been exchanged among regions and countries. China, having the largest population in the world and the highest economic growth rate in last decades, may have an important influence on global sustainable development through the trade of primary commodities. Using the data from Almanac of China's Foreign Economic Relations and Trade, we analyzed material flows in the trade of primary commodity in China from 1950 to 2001. Our analysis shows that: (1) China has turned from a net exporter of primary commodities to a net importer; (2) minerals and fuels have been the major imports of primary commodities since 1992, just as well as foods and minerals did in 1980s; (3) most of the net imported primary commodities come from Oceania, Africa and Latin America. (author)

  6. Logistic Organization of Mass Events in the Light of SWOT Analysis - Case Study

    Directory of Open Access Journals (Sweden)

    Joanna Woźniak

    2018-02-01

    Full Text Available Rzeszow Juwenalia is the largest free-entry student event in Subcarpathia, and, at the same time, one of the best in Poland. On average, more than 25,000 people stay on the campus of Rzeszow University of Technology for every single day of the event. Such an enormous undertaking requires developing a strategy which will make it possible to design and coordinate the event effectively. In connection with that, the principal objective of this paper is to present the strengths and weaknesses of Rzeszow Juwenalia, and also to attempt to verify opportunities and threats related to the event. SWOT analysis was used in order to attain the adopted objective. With the use of it, results making it possible to conduct a detailed assessment of the undertaking were obtained. In the publication were presented proposals of improvement activities which may be implemented in the future.

  7. Stylistic analysis of headlines in science journalism: A case study of New Scientist.

    Science.gov (United States)

    Molek-Kozakowska, Katarzyna

    2017-11-01

    This article explores science journalism in the context of the media competition for readers' attention. It offers a qualitative stylistic perspective on how popular journalism colonizes science communication. It examines a sample of 400 headlines collected over the period of 15 months from the ranking of five 'most-read' articles on the website of the international magazine New Scientist. Dominant lexical properties of the sample are first identified through frequency and keyness survey and then analysed qualitatively from the perspective of the stylistic projection of newsworthiness. The analysis illustrates various degrees of stylistic 'hybridity' in online popularization of scientific research. Stylistic patterns that celebrate, domesticate or personalize science coverage (characteristic of popular journalism) are intertwined with devices that foreground tentativeness, precision and informativeness (characteristic of science communication). The article reflects on the implications of including various proportions of academic and popular styles in science journalism.

  8. Medical Tourism Destination SWOT Analysis: A Case Study of Malaysia, Thailand, Singapore and India

    Directory of Open Access Journals (Sweden)

    Wong Kee Mun

    2014-01-01

    Full Text Available The growth of global medical tourism in the recent years had spurred the interest of many governments to join in the bandwagon, particularly from Asia. Using the SWOT analytical model, this paper provides pertinent comparative analysis of the medical tourism destinations here being Malaysia, Thailand, Singapore and India. Each destination possesses its own value propositions to convince the demands of medical tourists. Malaysia and Thailand have a good mixture of elements (medical, tourism and wellness to be an excellent medical tourism destination while Singapore and India need further development in some of these elements. Meeting or exceeding the medical tourists’ expectations and requirements are the priority of medical tourism destination marketers in ensuring a successful medical tourism industry development.

  9. Factors and competitiveness analysis in rare earth mining, new methodology: case study from Brazil.

    Science.gov (United States)

    Silva, Gustavo A; Petter, Carlos O; Albuquerque, Nelson R

    2018-03-01

    Rare earths are increasingly being applied in high-tech industries, such as green energy (e.g. wind power), hybrid cars, electric cars, permanent high-performance magnets, superconductors, luminophores and many other industrial sectors involved in modern technologies. Given that China dominates this market and imposes restrictions on production and exports whenever opportunities arise, it is becoming more and more challenging to develop business ventures in this sector. Several initiatives were taken to prospect new resources and develop the production chain, including the mining of these mineral assets around the world, but some factors of uncertainties, including current low prices, increased the challenge of transforming the current resources into deposits or productive mines. Thus, analyzing the competitiveness of advanced projects becomes indispensable. This work has the objective of introducing a new methodology of competitiveness analysis, where some variables are considered as main factors that can contribute strongly to make unfeasible a mining enterprise for the use of rare earth elements (REE) with this methodology, which is quite practical and reproducible, it was possible to verify some real facts, such as: the fact that the Lynas Mount Weld CLD (AUS) Project is resilient to the uncertainties of the RE sector, at the same time as the Molycorp Project is facing major financial difficulties (under judicial reorganization). It was also possible to verify that the Araxá Project of CBMM in Brazil is one of the most competitive in this country. Thus, we contribute to the existing literature, providing a new methodology for competitiveness analysis in rare earth mining.

  10. Retrieval of Aerosol Optical Depth Above Clouds from OMI Observations: Sensitivity Analysis, Case Studies

    Science.gov (United States)

    Torres, O.; Jethva, H.; Bhartia, P. K.

    2012-01-01

    A large fraction of the atmospheric aerosol load reaching the free troposphere is frequently located above low clouds. Most commonly observed aerosols above clouds are carbonaceous particles generally associated with biomass burning and boreal forest fires, and mineral aerosols originated in arid and semi-arid regions and transported across large distances, often above clouds. Because these aerosols absorb solar radiation, their role in the radiative transfer balance of the earth atmosphere system is especially important. The generally negative (cooling) top of the atmosphere direct effect of absorbing aerosols, may turn into warming when the light-absorbing particles are located above clouds. The actual effect depends on the aerosol load and the single scattering albedo, and on the geometric cloud fraction. In spite of its potential significance, the role of aerosols above clouds is not adequately accounted for in the assessment of aerosol radiative forcing effects due to the lack of measurements. In this paper we discuss the basis of a simple technique that uses near-UV observations to simultaneously derive the optical depth of both the aerosol layer and the underlying cloud for overcast conditions. The two-parameter retrieval method described here makes use of the UV aerosol index and reflectance measurements at 388 nm. A detailed sensitivity analysis indicates that the measured radiances depend mainly on the aerosol absorption exponent and aerosol-cloud separation. The technique was applied to above-cloud aerosol events over the Southern Atlantic Ocean yielding realistic results as indicated by indirect evaluation methods. An error analysis indicates that for typical overcast cloudy conditions and aerosol loads, the aerosol optical depth can be retrieved with an accuracy of approximately 54% whereas the cloud optical depth can be derived within 17% of the true value.

  11. Factors and competitiveness analysis in rare earth mining, new methodology: case study from Brazil

    Directory of Open Access Journals (Sweden)

    Gustavo A. Silva

    2018-03-01

    Full Text Available Rare earths are increasingly being applied in high-tech industries, such as green energy (e.g. wind power, hybrid cars, electric cars, permanent high-performance magnets, superconductors, luminophores and many other industrial sectors involved in modern technologies. Given that China dominates this market and imposes restrictions on production and exports whenever opportunities arise, it is becoming more and more challenging to develop business ventures in this sector. Several initiatives were taken to prospect new resources and develop the production chain, including the mining of these mineral assets around the world, but some factors of uncertainties, including current low prices, increased the challenge of transforming the current resources into deposits or productive mines. Thus, analyzing the competitiveness of advanced projects becomes indispensable. This work has the objective of introducing a new methodology of competitiveness analysis, where some variables are considered as main factors that can contribute strongly to make unfeasible a mining enterprise for the use of rare earth elements (REE with this methodology, which is quite practical and reproducible, it was possible to verify some real facts, such as: the fact that the Lynas Mount Weld CLD (AUS Project is resilient to the uncertainties of the RE sector, at the same time as the Molycorp Project is facing major financial difficulties (under judicial reorganization. It was also possible to verify that the Araxá Project of CBMM in Brazil is one of the most competitive in this country. Thus, we contribute to the existing literature, providing a new methodology for competitiveness analysis in rare earth mining. Keywords: Earth sciences, Business, Economics, Industry

  12. A Support Analysis Framework for mass movement damage assessment: applications to case studies in Calabria (Italy

    Directory of Open Access Journals (Sweden)

    O. Petrucci

    2009-03-01

    Full Text Available The analysis of data describing damage caused by mass movements in Calabria (Italy allowed the organisation of the Support Analysis Framework (SAF, a spreadsheet that converts damage descriptions into numerical indices expressing direct, indirect, and intangible damage.

    The SAF assesses damage indices of past mass movements and the potential outcomes of dormant phenomena re-activations. It is based on the effects on damaged elements and is independent of both physical and geometric phenomenon characteristics.

    SAF sections that assess direct damage encompass several lines, each describing an element characterised by a value fixed on a relative arbitrary scale. The levels of loss are classified as: L4: complete; L3: high; L2: medium; or L1: low. For a generic line l, the SAF multiplies the value of a damaged element by its level of loss, obtaining dl, the contribution of the line to the damage.

    Indirect damage is appraised by two sections accounting for: (a actions aiming to overcome emergency situations and (b actions aiming to restore pre-movement conditions. The level of loss depends on the number of people involved (a or the cost of actions (b.

    For intangible damage, the level of loss depends on the number of people involved.

    We examined three phenomena, assessing damage using the SAF and SAFL, customised versions of SAF based on the elements actually present in the analysed municipalities that consider the values of elements in the community framework. We show that in less populated, inland, and affluent municipalities, the impact of mass movements is greater than in coastal areas.

    The SAF can be useful to sort groups of phenomena according to their probable future damage, supplying results significant either for insurance companies or for local authorities involved in both disaster management and planning of defensive measures.

  13. Mortality sensitivity in life-stage simulation analysis: A case study of southern sea otters

    Science.gov (United States)

    Gerber, L.R.; Tinker, M.T.; Doak, D.F.; Estes, J.A.; Jessup, David A.

    2004-01-01

    Currently, there are no generally recognized approaches for linking detailed mortality and pathology data to population-level analyses of extinction risk. We used a combination of analytical and simulation-based analyses to examine 20 years of age- and sex-specific mortality data for southern sea otters (Enhydra lutris), and we applied results to project the efficacy of alternative conservation strategies. Population recovery of the southern sea otter has been slow (rate of population increase ?? = 1.05) compared to other recovering populations (?? = 1.17-1.20), and the population declined (?? = 0.975) between 1995 and 1999. Age-based Leslie matrices were developed to explore explanations for the slow recovery and recent decline in the southern sea other population. An elasticity analysis was performed to predict effects of proportional changes in stage-specific reproductive or survival rates on the rate of population increase. A life-stage simulation analysis (LSA) was developed to evaluate the impact of changing age- and cause-specific mortality rates on ??. The information used to develop these models was derived from death assemblage, pathology, and live population census data to examine the sensitivity of sea otter population growth to different sources of mortality (e.g., disease and starvation, direct human take [fisheries, gun shot, boat strike, oil pollution], mating trauma and intraspecific aggression, shark bites, and unknown). We used resampling simulations to generate random combinations of vital rates for a large number of matrix replicates and drew on these to estimate potential effects of mortality sources on population growth (??). Our analyses suggest management actions that are likely and unlikely to promote recovery of the southern sea otter and more broadly indicate a methodology to better utilize cause-of-death data in conservation decision-making.

  14. Case Follow-Up Study the Patients Undergoing Metalic Heart Valves Replacement Through Phonocardiographic Analysis

    National Research Council Canada - National Science Library

    Kemaloglu, Semra

    2001-01-01

    In this study, the synchronous pursuit of hearts sounds together with FCC signals have been realized, For this purpose pre-operative and post-operative clinic data related with the patients with heart...

  15. Analysis of Engineered Nanomaterials in Complex Matricies (Environment and Biota): General Considerations and Conceptual Case Studies

    Science.gov (United States)

    Advances in the study of the environmental fate, transport, and ecotoxicological effects of engineered nanomaterials (ENMs) have been hampered by a lack of adequate techniques for the detection and quantification of ENMs at environmentally relevant concentrations in complex media...

  16. Case Study Analysis of the Impacts of Water Acquisition for Hydraulic Fracturing on Local Water Availability

    Science.gov (United States)

    Hydraulic fracturing (HF) is used to develop unconventional gas reserves, but the technology requires large volumes of water, placing demands on local water resources and potentially creating conflict with other users and ecosystems. This study examines the balance between water ...

  17. Sizing for the apparel industry using statistical analysis - a Brazilian case study

    Science.gov (United States)

    Capelassi, C. H.; Carvalho, M. A.; El Kattel, C.; Xu, B.

    2017-10-01

    The study of the body measurements of Brazilian women used the Kinect Body Imaging system for 3D body scanning. The result of the study aims to meet the needs of the apparel industry for accurate measurements. Data was statistically treated using the IBM SPSS 23 system, with 95% confidence (P 0,58) and from the Hip-to-Height Ratio - HHR (bottom portion): Small (HHR 0,68).

  18. Social Media Analysis For Organizations: Us Northeastern Public And State Libraries Case Study

    OpenAIRE

    Collins, Matthew; Karami, Amir

    2018-01-01

    Social networking sites such as Twitter have provided a great opportunity for organizations such as public libraries to disseminate information for public relations purposes. However, there is a need to analyze vast amounts of social media data. This study presents a computational approach to explore the content of tweets posted by nine public libraries in the northeastern United States of America. In December 2017, this study extracted more than 19,000 tweets from the Twitter accounts of sev...

  19. Meta-analysis to determine the effects of plant disease management measures: review and case studies on soybean and apple.

    Science.gov (United States)

    Ngugi, Henry K; Esker, Paul D; Scherm, Harald

    2011-01-01

    The continuing exponential increase in scientific knowledge, the growing availability of large databases containing raw or partially annotated information, and the increased need to document impacts of large-scale research and funding programs provide a great incentive for integrating and adding value to previously published (or unpublished) research through quantitative synthesis. Meta-analysis has become the standard for quantitative evidence synthesis in many disciplines, offering a broadly accepted and statistically powerful framework for estimating the magnitude, consistency, and homogeneity of the effect of interest across studies. Here, we review previous and current uses of meta-analysis in plant pathology with a focus on applications in epidemiology and disease management. About a dozen formal meta-analyses have been published in the plant pathological literature in the past decade, and several more are currently in progress. Three broad research questions have been addressed, the most common being the comparative efficacy of chemical treatments for managing disease and reducing yield loss across environments. The second most common application has been the quantification of relationships between disease intensity and yield, or between different measures of disease, across studies. Lastly, meta-analysis has been applied to assess factors affecting pathogen-biocontrol agent interactions or the effectiveness of biological control of plant disease or weeds. In recent years, fixed-effects meta-analysis has been largely replaced by random- (or mixed-) effects analysis owing to the statistical benefits associated with the latter and the wider availability of computer software to conduct these analyses. Another recent trend has been the more common use of multivariate meta-analysis or meta-regression to analyze the impacts of study-level independent variables (moderator variables) on the response of interest. The application of meta-analysis to practical problems

  20. Water balance analysis for efficient water allocation in agriculture. A case study: Balta Brailei, Romania

    Science.gov (United States)

    Chitu, Zenaida; Villani, Giulia; Tomei, Fausto; Minciuna, Marian; Aldea, Adrian; Dumitrescu, Alexandru; Trifu, Cristina; Neagu, Dumitru

    2017-04-01

    Balta Brailei is one of the largest agriculture area in the Danube floodplain, located in SE of Romania. An impressive irrigation system, that covered about 53.500 ha and transferred water from the Danube River, was carried out in the period 1960-1980. Even if the water resources for agriculture in this area cover in most of the cases the volumes required by irrigation water users, the irrigation infrastructure issues as the position of the pumping stations against the river levels hinder the use of the water during low flows periods. An efficient optimization of water allocation in agriculture could avoid periods with water deficit in the irrigation systems. Hydrological processes are essentials in describing the mass and energy exchanges in the atmosphere-plant-soil system. Furthermore, the hydrological regime in this area is very dynamic with many feedback mechanisms between the various parts of the surface and subsurface water regimes. Agricultural crops depend on capillary rise from the shallow groundwater table and irrigation. For an effective optimization of irrigation water in Balta Brailei, we propose to analyse the water balance taking into consideration the water movement into the root zone and the influence of the Danube river, irrigation channel system and the shallow aquifer by combining the soil water balance model CRITERIA and GMS hydrogeological model. CRITERIA model is used for simulating water movement into the soil, while GMS model is used for simulating the shallow groundwater level variation. The understanding of the complex feedbacks between atmosphere, crops and the various parts of the surface and subsurface water regimes in the Balta Brailei will bring more insights for predicting crop water need and water resources for irrigation and it will represent the basis for implementing Moses Platform in this specific area. Moses Platform is a GIS based system devoted to water procurement and management agencies to facilitate planning of

  1. Environmental Analysis of Waste-to-Energy—A Portuguese Case Study

    Directory of Open Access Journals (Sweden)

    Ana Ramos

    2018-03-01

    Full Text Available Environmental evaluation of the waste treatment processes for the area of Greater Porto (Portugal is presented for the year 2015. The raw data for the energy recovery plant (ERP provided by the waste management entity were modelled into nine environmental impact categories, resorting to a life cycle assessment dedicated software (GaBi for the treatment of 1 tonne of residues. Also, a sensitivity analysis was conducted for five scenarios in order to verify the assessment quality. Results were compared to two European average situations (typical incineration plant and sanitary landfill with no waste pre-treatment, which showed that these facilities perform better or at the same level as the average European situation, mostly due to the high efficiency observed at the ERP and to the electricity production in the incineration process. A detailed analysis concluded that these helped to mitigate the environmental impacts caused by some of the processes involved in the waste-to-energy technology (landfill showing the harder impacts, by saving material resources as well as avoiding emissions to fresh water and air. The overall performance of the energy recovery plant was relevant, 1 tonne of waste saving up to 1.3 million kg of resources and materials. Regarding the environmental indicators, enhanced results were achieved especially for the global warming potential (−171 kgCO2-eq., eutrophication potential (−39 × 10−3 kgPO4-eq. and terrestrial ecotoxicity potential (−59 × 10−3 kgDCB-eq. categories. This work was the first to characterize this Portuguese incineration plant according to the used methodology, supporting the necessary follow-up required by legal frameworks proposed by European Union (EU, once this facility serves a wide populational zone and therefore is representative of the current waste management tendency in the country. LCA (life cycle assessment was confirmed as a suitable and reliable approach to evaluate the

  2. Social vulnerability analysis of the event flood puddle (case study in Lamongan regency, East Java province)

    Science.gov (United States)

    Soegiyanto; Rindawati

    2018-01-01

    This research was conducted in the flood plain Bonorowo in Lamongan East Java Province. The area was inundated almost every year, but people still survive and remain settled at the sites. This research is to identify and analyze the social vulnerability in the flood plains on the characteristics puddle Bonorowo This research method is the study of the characteristics and livelihood strategies of the communities living on marginal lands (floodplains Bonorowo) are regions prone to flooding / inundation. Based on the object of this study is a survey research method mix / mix method, which merge or combination of methods of quantitative and qualitative methods, so it will be obtained a description of a more comprehensive and holistic. The results obtained in this study are; Social vulnerability is not affected by the heightened puddles. Social capital is abundant making society safer and more comfortable to keep their activities and settle in the region

  3. Analysis of wet granulation process with Plackett-Burman design--case study.

    Science.gov (United States)

    Woyna-Orlewicz, Krzysztof; Jachowicz, Renata

    2011-01-01

    According to Process Analytical Technology perspective, drug product quality should be ensured by manufacturing process design. Initial step of the process analysis is investigation of critical process parameters (CPPs). It is generally accepted to type the CPPs based on project team knowledge and experience [5]. This paper describes the use of Design of Experiments tool for selection of the CPPs. Seven factors of wet granulation process were investigated for criticality. Low and high levels of each factor represented maximal and minimal settings of wide operational ranges. Granulates were produced in line with Plackett-Burman experimental matrix, blended with extra-granular excipients and compressed into tablets. Semi-products and final products were tested. Out of specification result of any critical quality attribute was treated as critical failure. The high-shear granulation factors, i.e. quantity of binding solution, rotational speed of impeller and wet massing time were considered of critical importance. Operational ranges of the parameters were optimized. The process performance was confirmed in qualification trials.

  4. ERROR ANALYSIS OF ENGLISH WRITTEN ESSAY OF HIGHER EFL LEARNERS: A CASE STUDY

    Directory of Open Access Journals (Sweden)

    Rina Husnaini Febriyanti

    2016-09-01

    Full Text Available The aim of the research is to identify grammatical error and to investigate the most and the least of grammatical error occurred on the students’ English written essay. The approach of research is qualitative descriptive with descriptive analysis. The samples were taken from the essays made by 34 students in writing class. The findings resulted in: the most common error occurred was subject-verb agreement error and the score was 28, 25%. The second place of frequent error was on verb tense and form with 24, 66% as the score. The third was on spellings errors and the value is 17, 94%. The fourth was error on using auxiliaries and the score 9, 87%. The fifth was error on word order with the score was 8.07%. The rest error was applying passive voice with the score is 4.93%, articles (3.59%, prepositions (1.79%, and pronoun and run-on sentence with the same scores, 0. 45%. This may indicate that most students still made errors even for the usage of basic grammar rules in their writing.

  5. Complex analysis of energy efficiency in operated high-rise residential building: Case study

    Directory of Open Access Journals (Sweden)

    Korniyenko Sergey

    2018-01-01

    Full Text Available Energy conservation and human thermal comfort enhancement in buildings is a topical issue of modern architecture and construction. The innovative solution of this problem makes it possible to enhance building ecological and maintenance safety, to reduce hydrocarbon fuel consumption, and to improve life standard of people. The requirements to increase of energy efficiency in buildings should be provided at all the stages of building's life cycle that is at the stage of design, construction and maintenance of buildings. The research purpose is complex analysis of energy efficiency in operated high-rise residential building. Many actions for building energy efficiency are realized according to the project; mainly it is the effective building envelope and engineering systems. Based on results of measurements the energy indicators of the building during annual period have been calculated. The main reason of increase in heat losses consists in the raised infiltration of external air in the building through a building envelope owing to the increased air permeability of windows and balcony doors (construction defects. Thermorenovation of the building based on ventilating and infiltration heat losses reduction through a building envelope allows reducing annual energy consumption. Energy efficiency assessment based on the total annual energy consumption of building, including energy indices for heating and a ventilation, hot water supply and electricity supply, in comparison with heating is more complete. The account of various components in building energy balance completely corresponds to modern direction of researches on energy conservation and thermal comfort enhancement in buildings.

  6. PERFORMANCE ANALYSIS ON FREIGHT TRANSPORTATION IN FURNITURE INDUSTRY, A CASE STUDY IN BANTUL, YOGYAKARTA, INDONESIA

    Directory of Open Access Journals (Sweden)

    C. H. Soekamto

    2012-06-01

    Full Text Available The Supply Chain Management is a new philosophy encouraging internal and external integration which encompass all the aspects, from the supplier until down to the customers. Transportation plays a major role in achieving efficiency and effectiveness because the role of transportation in the Supply Chain is as the intermediary help to distribute the physical goods from one entity to another entity.  For this reason, the objective of this research is to analyse and measure the effectiveness and efficiency of inbound and outbound logistics in the furniture industry in Bantul, Yogyakarta. Firstly, the author will try to draw the supply chain mapping in order to gain more understanding about the entities in the supply chain.  Secondly, performance of the transportation modes that will be used to move the furniture will be assessed through questionnaire. Thirdly, the author will try to analyse the response if rail transportation is proposed as an alternative transportation mode to move the goods. Lastly, conclusion and recommendation regarding the issue will be derived as implied in the result from data analysis. Keywords: Supply chain management, transportation, performance, furniture industry.

  7. Proteogenomic analysis of bacteria and archaea: A 46 organism case study

    Energy Technology Data Exchange (ETDEWEB)

    Venter, Eli; Smith, Richard D.; Payne, Samuel H.

    2011-11-17

    Experimental evidence is increasingly being used to reassess the quality and accuracy of genome annotation. Proteomics data used for this purpose, called proteogenomics, can alleviate many of the problematic areas of genome annotation, e.g. short protein validation and start site assignment. We performed a proteogenomic analysis of 51 genomes spanning eight bacterial and archaeal phyla across the tree of life. These diverse datasets facilitated the development of a robust approach for proteogenomics that is functional across genomes varying in %GC, gene content, proteomic sampling depth, phylogeny, and genome size. In addition to finding evidence for 701 novel proteins, 1365 new start sites, and numerous dubious genes, we discovered sites of post-translational maturation in the form of proteolytic cleavage of 1095 signal peptides. Proteomics provides a powerful experimental data type to access and improve the quality of genome annotation. A key advantage is the direct correlation between protein annotation and a protein based assay. With the adoption of new sequencing technologies which have higher error rates than Sanger-based methods and the advances in proteomics, proteogenomics may become even more important in the future.

  8. STATIC CODE ANALYSIS FOR SOFTWARE QUALITY IMPROVEMENT: A CASE STUDY IN BCI FRAMEWORK DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Indar Sugiarto

    2008-01-01

    Full Text Available This paper shows how the systematic approach in software testing using static code analysis method can be used for improving the software quality of a BCI framework. The method is best performed during the development phase of framework programs. In the proposed approach, we evaluate several software metrics which are based on the principles of object oriented design. Since such method is depending on the underlying programming language, we describe the method in term of C++ language programming whereas the Qt platform is also currently being used. One of the most important metric is so called software complexity. Applying the software complexity calculation using both McCabe and Halstead method for the BCI framework which consists of two important types of BCI, those are SSVEP and P300, we found that there are two classes in the framework which have very complex and prone to violation of cohesion principle in OOP. The other metrics are fit the criteria of the proposed framework aspects, such as: MPC is less than 20; average complexity is around value of 5; and the maximum depth is below 10 blocks. Such variables are considered very important when further developing the BCI framework in the future.

  9. Holder and Topic Based Analysis of Emotions on Blog Texts: A Case Study for Bengali

    Science.gov (United States)

    Das, Dipankar; Bandyopadhyay, Sivaji

    The paper presents an extended approach of analyzing emotions of the blog users on different topics. The rule based techniques to identify emotion holders and topics with respect to their corresponding emotional expressions helps to develop the baseline system. On the other hand, the Support Vector Machine (SVM) based supervised framework identifies the holders, topics and emotional expressions from the blog sentences by outperforming the baseline system. The existence of many to many relations between the holders and the topics with respect to Ekman's six different emotion classes has been examined using two way evaluation techniques, one is with respect to holder and other is from the perspective of topic. The results of the system were found satisfactory in comparison with the agreement of the subjective annotation. The error analysis shows that the topic of a blog at document level is not always conveyed at the sentence level. Moreover, the difficulty in identifying topic from a blog document is due to the problem of identifying some features like bigrams, Named Entities and sentiment. Thus, we employed a semantic clustering approach along with these features to identify the similarity between document level topic and sentential topic as well as to improve the results of identifying the document level topic.

  10. Using ICD for structural analysis of clusters: a case study on NeAr clusters

    Science.gov (United States)

    Fasshauer, E.; Förstel, M.; Pallmann, S.; Pernpointner, M.; Hergenhahn, U.

    2014-10-01

    We present a method to utilize interatomic Coulombic decay (ICD) to retrieve information about the mean geometric structures of heteronuclear clusters. It is based on observation and modelling of competing ICD channels, which involve the same initial vacancy, but energetically different final states with vacancies in different components of the cluster. Using binary rare gas clusters of Ne and Ar as an example, we measure the relative intensity of ICD into (Ne+)2 and Ne+Ar+ final states with spectroscopically well separated ICD peaks. We compare in detail the experimental ratios of the Ne-Ne and Ne-Ar ICD contributions and their positions and widths to values calculated for a diverse set of possible structures. We conclude that NeAr clusters exhibit a core-shell structure with an argon core surrounded by complete neon shells and, possibly, further an incomplete shell of neon atoms for the experimental conditions investigated. Our analysis allows one to differentiate between clusters of similar size and stochiometric Ar content, but different internal structure. We find evidence for ICD of Ne 2s-1, producing Ar+ vacancies in the second coordination shell of the initial site.

  11. An Analysis of OpenACC Programming Model: Image Processing Algorithms as a Case Study

    Directory of Open Access Journals (Sweden)

    M. J. Mišić

    2014-06-01

    Full Text Available Graphics processing units and similar accelerators have been intensively used in general purpose computations for several years. In the last decade, GPU architecture and organization changed dramatically to support an ever-increasing demand for computing power. Along with changes in hardware, novel programming models have been proposed, such as NVIDIA’s Compute Unified Device Architecture (CUDA and Open Computing Language (OpenCL by Khronos group. Although numerous commercial and scientific applications have been developed using these two models, they still impose a significant challenge for less experienced users. There are users from various scientific and engineering communities who would like to speed up their applications without the need to deeply understand a low-level programming model and underlying hardware. In 2011, OpenACC programming model was launched. Much like OpenMP for multicore processors, OpenACC is a high-level, directive-based programming model for manycore processors like GPUs. This paper presents an analysis of OpenACC programming model and its applicability in typical domains like image processing. Three, simple image processing algorithms have been implemented for execution on the GPU with OpenACC. The results were compared with their sequential counterparts, and results are briefly discussed.

  12. Analysis of the Public Servants' Needs. Case Study: Romania, the North-West Region

    Directory of Open Access Journals (Sweden)

    Simona Claudia CREȚA

    2011-02-01

    Full Text Available Considering that individuals can fulfill some of their needs at the workplace, we may assume that, from the moment people choose a job, they are oriented toward those organizations that ease needs’ satisfaction and quitting that job is less likely when the dominant work needs are met. This paper aims to identify and analyze the needs of public servants from the North-West Region of Romania. The research was conducted in two distinct parts: the identification of needs was made using interviews and the analysis was based on data collected by self-administrated questionnaires. Specific needs of public servants were identified, along with general needs which are expressed by employees from other sectors. 77 needs were analyzed and they were grouped in 22 dimensions following the application of a questionnaire to 343 employees. The results showed that there are three major needs that public servants have namely the need for an optimal organizational climate, the need to have a career and the need to have specific work characteristics.

  13. Design and Economic Analysis of a Photovoltaic System: A Case Study

    Directory of Open Access Journals (Sweden)

    COC Oko

    2012-11-01

    Full Text Available This paper presents the design analysis of a photovoltaic (PV system to power the CAD/CAM Laboratory at the Department of Mechanical Engineering, University of Port Harcourt. Life cycle cost and break-even point analyses are also carried out to assess the economic viability of the system. The unit cost of electricity for the designed PV system is high compared to the current unit cost of the municipally supplied electricity, but will be competitive with lowering cost of PV system components and favourable government policies on renewable energy. The approach and data provided are useful for designing solar systems in the area. The automated MS Excel spreadsheet developed could be used for the design and economic analyses of PV system in any other geographical region once the input data are sorted. Since about 90% of businesses in Nigeria currently own diesel generators, it is expected that future work should be devoted to the optimum combination of PV-Battery-Diesel system in electricity generation for optimum economic benefits to the country. Keywords: photovoltaic system design, renewable energy technology, solar energy economics

  14. Remote sensing and gis application in wetland change analysis: case study of kallar kahar

    International Nuclear Information System (INIS)

    Ahmad, S.S.; Erum, S.

    2012-01-01

    Wetlands are the one of the naturally occurring habitat. They provide invaluable biodiversity resources, aids in water quality improvement, support ground water recharge, help in moderating climate change and supply flood control but they are deteriorated greatly due to economic development and population growth. In the present analysis, the object-based approach of 'ENVI' is presented to derive the change detection inventory information for Kallar Kahar Wetland using Quick bird imagery and Corona imagery. According to the results, agricultural and shrub area has reduced by 43% and 49% respectively whereas there has been an increase in the water-body, uncultivated/soiled area, orchard and built-up area by 40%, 53%, 79% and 38%, respectively. In order to analyse the change detection of Wetlands using very high resolution satellite images, the outcome of the analyses is presented which can help in decision making for the purpose of land development and further assess the implications of the observed changes in the area for making appropriate recommendations. (author)

  15. Building America Case Study: Multifamily Zero Energy Ready Home Analysis, Elmsford, New York

    Energy Technology Data Exchange (ETDEWEB)

    2016-04-01

    Two multifamily buildings planned in Climate Zone 4 were analyzed to determine the cost, energy and performance implications of redesigning them to comply with Zero Energy Ready Home, a recognition program of the U.S. Department of Energy. Energy modeling was conducted on one representative apartment in each building using BEopt. Construction costs were obtained from the developer and subcontractors to determine savings and cost increases over ENERGY STAR. It was found that seven items would be necessary to change to comply with ZERH criteria when starting from the original design which was compliant with ENERGY STAR version 3.0. Design changes were made to the exterior walls, domestic water heating system, duct protection, duct design, garage ventilation, and pest control to comply with ZERH requirements. Energy impacts of upgrading from the original design to ZERH resulted in 2 to 8 percent reduction in modeled source energy consumption, or 1.7 to 10.4 MMBtu per year, although the original design was already about 8 percent better than a design configured to minimum ENERGY STAR criteria. According to the BEopt analysis, annualized energy related costs of the ZERH design were slightly higher for the apartment and slightly lower for the townhome when compared to the original design.

  16. Topic Detection Based on Weak Tie Analysis: A Case Study of LIS Research

    Directory of Open Access Journals (Sweden)

    Ling Wei

    2016-11-01

    Full Text Available Purpose: Based on the weak tie theory, this paper proposes a series of connection indicators of weak tie subnets and weak tie nodes to detect research topics, recognize their connections, and understand their evolution. Design/methodology/approach: First, keywords are extracted from article titles and preprocessed. Second, high-frequency keywords are selected to generate weak tie co-occurrence networks. By removing the internal lines of clustered sub-topic networks, we focus on the analysis of weak tie subnets' composition and functions and the weak tie nodes' roles. Findings: The research topics' clusters and themes changed yearly; the subnets clustered with technique-related and methodology-related topics have been the core, important subnets for years; while close subnets are highly independent, research topics are generally concentrated and most topics are application-related; the roles and functions of nodes and weak ties are diversified. Research limitations: The parameter values are somewhat inconsistent; the weak tie subnets and nodes are classified based on empirical observations, and the conclusions are not verified or compared to other methods. Practical implications: The research is valuable for detecting important research topics as well as their roles, interrelations, and evolution trends. Originality/value: To contribute to the strength of weak tie theory, the research translates weak and strong ties concepts to co-occurrence strength, and analyzes weak ties' functions. Also, the research proposes a quantitative method to classify and measure the topics' clusters and nodes.

  17. Cost-Benefit Analysis for Energy Management in Public Buildings: Four Italian Case Studies

    Directory of Open Access Journals (Sweden)

    Davide Astiaso Garcia

    2016-07-01

    Full Text Available Improving energy efficiency in public buildings is one of the main challenges for a sustainable requalification of energy issues and a consequent reduction of greenhouse gas (GHG emissions. This paper aims to provide preliminary information about economic costs and energy consumption reductions (benefits of some considered interventions in existing public buildings. Methods include an analysis of some feasible interventions in four selected public buildings. Energy efficiency improvements have been assessed for each feasible intervention. The difference of the building global energy performance index (EPgl has been assessed before and after each intervention. Economic costs of each intervention have been estimated by averaging the amount demanded by different companies for the same intervention. Results obtained show economic costs and the EPgl percentage improvement for each intervention, highlighting and allowing for the comparison of energy consumption reduction and relative economic costs. The research results come from data gathered from four public buildings, and as such they could not be used to generically identify cost-beneficial energy efficiency interventions for every context or building type. However, the data reveals useful cost based considerations for selecting energy efficiency interventions in other public buildings.

  18. Complex analysis of energy efficiency in operated high-rise residential building: Case study

    Science.gov (United States)

    Korniyenko, Sergey

    2018-03-01

    Energy conservation and human thermal comfort enhancement in buildings is a topical issue of modern architecture and construction. The innovative solution of this problem makes it possible to enhance building ecological and maintenance safety, to reduce hydrocarbon fuel consumption, and to improve life standard of people. The requirements to increase of energy efficiency in buildings should be provided at all the stages of building's life cycle that is at the stage of design, construction and maintenance of buildings. The research purpose is complex analysis of energy efficiency in operated high-rise residential building. Many actions for building energy efficiency are realized according to the project; mainly it is the effective building envelope and engineering systems. Based on results of measurements the energy indicators of the building during annual period have been calculated. The main reason of increase in heat losses consists in the raised infiltration of external air in the building through a building envelope owing to the increased air permeability of windows and balcony doors (construction defects). Thermorenovation of the building based on ventilating and infiltration heat losses reduction through a building envelope allows reducing annual energy consumption. Energy efficiency assessment based on the total annual energy consumption of building, including energy indices for heating and a ventilation, hot water supply and electricity supply, in comparison with heating is more complete. The account of various components in building energy balance completely corresponds to modern direction of researches on energy conservation and thermal comfort enhancement in buildings.

  19. Needs analysis for language course design. A case study for engineering and business students

    Science.gov (United States)

    Todea, L.; Demarcsek, R.

    2017-05-01

    These days, teaching languages - English in particular - has become an ever more complex and challenging task due to the fact that groups of students are eclectic in terms of knowledge of English and level of competence. Teachers try to adapt to this challenging environment by providing a wide variety of activities and materials so as to satisfy the students’ demands. This may sometimes prove counterproductive, is usually time consuming, and requires material and financial resources that are not always available. Under the circumstances, we considered that a needs analysis would benefit all parties involved: teachers on the one hand, in that it would somewhat simplify their effort and make it easier to work with the aforementioned groups of students, and the students on the other hand, in that the activities would be better tailored to suit their needs and requirements in terms of knowledge, abilities and skills. To this end, we conducted a survey in which we requested students to state their level of satisfaction with regard to the English course, as well as provide suggestions in terms of topics and language issues they would like to approach during these courses. In this paper we analysed and interpreted the responses in an attempt to adapt the content of the course so as to better meet the expectations of the end beneficiaries, i.e. the students.

  20. Integrated economy - energy - environment policy analysis : a case study for the People's Republic of China

    NARCIS (Netherlands)

    Zhang, Z.

    1996-01-01


    This study is the first systematic and comprehensive attempt to deal with the economic implications of carbon abatement for the Chinese economy in the light of the economics of climate change, of which this dissertation is the results. It consists of nine chapters. After a brief