WorldWideScience

Sample records for case study investigation

  1. Learning to Do Through Investigative Projects: A Case Study

    Science.gov (United States)

    Jolly, Pratibha

    2005-10-01

    In India, the likelihood of a girl student opting out of a physics course only because of gender issues is remote. Even though no special care is taken to attract women, a large percentage of the top-ranking students opt to major in physics. However, subtle forces operate in higher academia. The number of women in teaching and research institutes continues to be dismally low. The confidence and motivation of women students shows a distinct attenuation at the tertiary level. Inasmuch as the undergraduate years lay the foundation for a career in physics, there is a critical need to create learning experiences for women students that would enhance their motivation, nurture talent, and generate confidence in their capacity to make a creative contribution. The author has spent several years teaching at a women's college and in a university department with few women on the faculty. She has coordinated the Learning Through Investigative Projects program for undergraduate students of both genders. In a dual-pronged strategy, students are constructively engaged in open-ended investigative projects and assigned specific tasks. The touchstone of this program is the ambience in which the projects are carried out and the cognitive changes it effects in students as they are weaned away from the prevalent transmissionist mode of teaching and led to a constructivist paradigm of learning. They acquire an ability to work independently. The program and the underpinning pedagogic model have been very successful in capacity building and have influenced many students to choose careers in physics and academia. I present a case study of the work carried out under Project Science Online, in which students helped develop a microcomputer-based laboratory.

  2. Motorcycle safety device investigation: A case study on airbags

    Indian Academy of Sciences (India)

    A Chawla; S Mukherjee

    2007-08-01

    The present standard for assessing the effectiveness of safety measures for motorcycle riders defined in ISO 13232 is unique and it incorporates evaluation by computer simulation supplemented by full-scale crash tests. This report describes the process of using FE (Finite Element) simulations to investigate safety options for motorcycle riders. The experience of developing finite element models acceptable as per ISO 13232 standards has been described. The variation in dummy head accelerations on impact with inflating airbags has been studied in an environment acceptable as per ISO 13232 standards. Based on the simulations, it may be concluded that inflating airbags in motorcycles do not pose a significant injury threat.

  3. Performance Investigation of Plate Type Heat Exchanger (A Case Study)

    OpenAIRE

    Simarpreet Singh; Sanjeev Jakhar

    2014-01-01

    Heat exchanger is a thermodynamic system which is most commonly used in the process industry for exchanging heat energy between the fluids. flowing in the same or opposite direction. It is desired that effectiveness of heat exchanger should remain as large as possible. Heat exchanger's performance may be improved by the addition of fins or corrugations. These investigations include design of plate type heat exchanger, heat transfer enhancement, flow phenomenon and cleanliness ...

  4. Performance Investigation of Plate Type Heat Exchanger (A Case Study

    Directory of Open Access Journals (Sweden)

    Simarpreet Singh

    2014-04-01

    Full Text Available Heat exchanger is a thermodynamic system which is most commonly used in the process industry for exchanging heat energy between the fluids. flowing in the same or opposite direction. It is desired that effectiveness of heat exchanger should remain as large as possible. Heat exchanger's performance may be improved by the addition of fins or corrugations. These investigations include design of plate type heat exchanger, heat transfer enhancement, flow phenomenon and cleanliness factor. In process plants, this type of heat exchange is generally used for recovering heat content of exhaust steam. However, with the flow of fluid for a long period, fouling occurs on the plate surface. Therefore, it is required to investigate the effect of fouling, wherever the heat exchanger is installed. An extensive experimental investigation has been carried out under clean and dirty condition of the said plate type heat exchanger. Heat transfer and flow data were collected in experiment. From collected data heat transfer rate, overall heat transfer coefficient, fouling factor and cleanliness factor were evaluated. Based upon the cleanliness factor data, next date of cleanliness for plate type heat exchanger was predicted. It is felt that the outcome of the present research work may be quite useful for efficient operation of plate type heat exchanger installed in Process plants.

  5. Investigation of Poultry Waste for Anaerobic Digestion: A Case Study

    Science.gov (United States)

    Salam, Christopher R.

    Anaerobic Digestion (AD) is a biological conversion technology which is being used to produce bioenergy all over the world. This energy is created from biological feedstocks, and can often use waste products from various food and agricultural processors. Biogas from AD can be used as a fuel for heating or for co-generation of electricity and heat and is a renewable substitute to using fossil fuels. Nutrient recycling and waste reduction are additional benefits, creating a final product that can be used as a fertilizer in addition to energy benefits. This project was conducted to investigate the viability of three turkey production wastes as AD feedstock: two turkey litters and a material separated from the turkey processing wastewater using dissolved air flotation (DAF) process. The DAF waste contained greases, oils and other non-commodity portions of the turkey. Using a variety of different process methods, types of bacteria, loading rates and food-to-microorganism ratios, optimal loading rates for the digestion of these three materials were obtained. In addition, the co-digestion of these materials revealed additional energy benefits. In this study, batch digestion tests were carried out to treat these three feedstocks, using mesophilic and thermophilic bacteria, using loading rates of 3 and 6 gVS/L They were tested separately and also as a mixture for co-digestion. The batch reactor used in this study had total and working volumes of 1130 mL and 500 mL, respectively. The initial organic loading was set to be 3 gVS/L, and the food to microorganism ratio was either 0.6 or 1.0 for different treatments based on the characteristics of each material. Only thermophilic (50 +/- 2ºC) temperatures were tested for the litter and DAF wastes in continuous digestion, but mesophilic and thermophilic batch digestion experiments were conducted. The optimum digestion time for all experiments was 14 days. The biogas yields of top litter, mixed litter, and DAF waste under

  6. The Pinellas Plant RCRA facility investigation - A case study

    International Nuclear Information System (INIS)

    Under the direction of the U.S. Department of Energy Albuquerque Field Office Environmental Restoration Program, a Resource Conservation and Recovery Act (RCRA) Facility Investigation (RFI) was completed at the Pinellas Plant to fulfill requirements of the Hazardous and Solid Waste Amendments of 1984 (HSWA) permit issued on February 9, 1990 by the U.S. Environmental Protection Agency (EPA). This RFI addressed potential contaminant releases and environmental conditions at 15 solid waste management units (SWMUs). The RFI characterization program began in April 1990 and was completed in May 1991. The scope of RFI data collection activities is presented in the Pinellas Plant RFI Workplan issued in May 1990 and approved by EPA on April 16, 1991. An RFI Report was submitted to EPA on September 1, 1991. This paper presents a summary of RFI results and conclusions. Primary environmental concerns at the Pinellas Plant are emphasized. (author)

  7. Sociological Investigating of the Authoritarian Personality (Case Study: Isfahan City

    Directory of Open Access Journals (Sweden)

    Vahid Ghasemi

    2011-12-01

    Full Text Available Abstract   The main questions to answer in this article are that “What are the possible explanations of the formation of the authoritarian personality? How is an authoritarian personality born and where are its roots?” We used from F. scale. The original F. scale was to contain 38 items and 9 key dimensions of authoritarian personality: Conventionalism, Authoritarian Submission, Authoritarian Aggression, Anti- interception, Superstition and Stereotype, Power and ‘toughness’, Destructiveness and Cynicism, Projective, heightened concerns about sex. This scale defined by Adorno at al. in 1950.   The purpose of this research is to find out the level of tendency toward authoritarianism and to study the impact of variables like age, group membership, socialization of power (family structure, education system and mass media, level of education, income and occupation on authoritarianism. In this survey study a sample of 368 citizens of Isfahan (18years old and over have been interviewed.   The results indicate that a significant and reserve relationship has been found between age, group membership, education system and mass media and tendency toward authoritarianism. A significant and direct relationship exists between family structure, level of education, income and occupation and tendency toward authoritarianism.

  8. The Power of Natural Selection: A Guided Investigation of Three Case Studies

    Science.gov (United States)

    Beachly, William

    2010-01-01

    I describe a quantitative approach to three case studies in evolution that can be used to challenge college freshmen to explore the power of natural selection and ask questions that foster a deeper understanding of its operation and relevance. Hemochromatosis, the peppered moth, and hominid cranial capacity are investigated with a common algebraic…

  9. Case study: to investigate blogging as an e-learning tool in post-primary schools

    OpenAIRE

    Conroy, Patty

    2011-01-01

    non-peer-reviewed The purpose of this case study is to investigate blogging as an e-learning tool. The era of e-learning has truly arrived. Educators have at their hands many free e-learning tools. It can be no longer the case of how information technology can be incorporated into the classroom but how effective each e-learning tool is to us as educators. Educators need to embrace e-learning combined with traditional teaching methods in order to engage and motivate our students most of who...

  10. A review on analytical techniques for natural convection investigation in a heated closed enclosure: Case study

    Directory of Open Access Journals (Sweden)

    Minea Alina Adriana

    2015-01-01

    Full Text Available The aim of this paper is to present a theoretical analysis of a few convection problems. The investigations were started from the geometry of a classic muffle manufactured furnace. During this analytical study, different methodologies have been carefully chosen in order to compare and evaluate the effects of applying different analytical methods of the convection heat transfer processes. In conclusion, even if there are available a lot of analytical methods, natural convection in enclosed enclosures can be studied correctly only with numerical analysis. Also, in this article is presented a case study on natural convection application in a closed heated enclosure.

  11. An Investigation of Factors Determining the Study Abroad Destination Choice: A Case Study of Taiwan

    Science.gov (United States)

    Lee, Cheng-Fei

    2014-01-01

    Previous studies on the field of education abroad have mainly focused on the factors influencing the mobility of international students from developing to developed countries and very few have been conducted to investigate the factors influencing the flow of international students to the Asia Pacific region. As a piece of country-specific…

  12. Group Investigation in a College English Program at a Chinese University:A Case Study

    Institute of Scientific and Technical Information of China (English)

    LIU Hao; CAI Ning; QIU Hu; PAN Yi; LIU Zi

    2015-01-01

    This study investigated the application and the effect of Group Investigation (GI) in the College English Program in a Chinese University. A qualitative case study method was used to understand the GI system used by Chinese instructors as well as the achievements acquired and challenges met by the participants. Three instructors and fifteen second-year-undergraduates tak⁃ing a course titled Sources of European Culture participated. Interviews, observations, and documents were used to collect the da⁃ta. Data analysis showed Chinese instructors applied a GI technique similar to that discussed by Johnson and Johnson ( 1999);how⁃ever, GI in the Chinese context demanded more effort from the teacher for designing tasks and provided help in modeling uses of English and in preparing visual, especially PowerPoint, presentations. Although participants used their mother tongue at some stages, their autonomy over English learning was activated, and horizons in the course content were broadened.

  13. Investigation of the molecular similarity in closely related protein systems: The PrP case study.

    Science.gov (United States)

    Storchi, Loriano; Paciotti, Roberto; Re, Nazzareno; Marrone, Alessandro

    2015-10-01

    The amyloid conversion is a massive detrimental modification affecting several proteins upon specific physical or chemical stimuli characterizing a plethora of diseases. In many cases, the amyloidogenic stimuli induce specific structural features to the protein conferring the propensity to misfold and form amyloid deposits. The investigation of mutants, structurally similar to their native isoform but inherently prone to amyloid conversion, may be a viable strategy to elucidate the structural features connected with amyloidogenesis. In this article, we present a computational protocol based on the combination of molecular dynamics (MD) and grid-based approaches suited for the pairwise comparison of closely related protein structures. This method was applied on the cellular prion protein (PrP(C)) as a case study and, in particular, addressed to the quali/quantification of the structural features conferred by either E200K mutations and treatment with CaCl(2), both able to induce the scrapie conversion of PrP. Several schemes of comparison were developed and applied to this case study, and made up suitable of application to other protein systems. At this purpose an in-house python codes has been implemented that, together with the parallelization of the GRID force fields program, will spread the applicability of the proposed computational procedure. PMID:26018750

  14. An investigation of breast cancer risk factors in Cyprus: a case control study

    Directory of Open Access Journals (Sweden)

    Hadjisavvas Andreas

    2010-08-01

    Full Text Available Abstract Background Breast cancer is the most common form of malignancy affecting women worldwide. It is also the leading cancer in females in Cyprus, with approximately 400 new cases diagnosed annually. It is well recognized that genetic variation as well as environmental factors modulate breast cancer risk. The main aim of this study was to assess the strength of associations between recognized risk factors and breast cancer among Cypriot women. This is the first epidemiological investigation on risk factors of breast cancer among the Cypriot female population. Methods We carried out a case-control study, involving 1,109 breast cancer patients and a group of 1,177 controls who were recruited while participating in the National screening programme for breast cancer. Information on demographic characteristics and potential risk factors were collected from both groups during a standardized interview. Logistic regression analysis was used to assess the strength of the association between each risk factor and breast cancer risk, before and after adjusting for the possible confounding effect of other factors. Results In multivariable models, family history of breast cancer (OR 1.64, 95% CI 1.23, 2.19 was the strongest predictor of breast cancer risk in the Cypriot population. Late menarche (OR 0.64, 95% CI 0.45, 0.92 among women reaching menarche after the age of 15 vs. before the age of 12 and breastfeeding (OR 0.74, 95% CI 0.59, 0.92 exhibited a strong protective effect. In the case of breastfeeding, the observed effect appeared stronger than the effect of pregnancy alone. Surprisingly, we also observed an inverse association between hormone replacement therapy (HRT although this may be a product of the retrospective nature of this study. Conclusion Overall the findings of our study corroborate with the results of previous investigations on descriptive epidemiology of risk factors for breast cancer. This investigation provides important background

  15. Defects Investigation in Old Timber Building: Case Study of Masjid Lama Defects Investigation in Old Timber Building: Case Study of Masjid Lama

    Directory of Open Access Journals (Sweden)

    Suhana Johar

    2013-04-01

    Full Text Available The aim of this study is to identify and highlights the importance parts of a conservation programs, particularly for timber building. Masjid Lama Mulong is one of a remaining cultural heritage experiencing conservation works as to restore the uniqueness of the building and its history that once existed. Made from cengal, one of the famous local hardwoods, however, it is not spared to the threat of decay and deterioration from its agent. In conservation, one of the important stages is to inspect and investigate defects, as to assure the implementations of appropriate improvements are made accordance with the conditions and the state of deteriorations. In this part, some of the important features of the investigators should take into account before any investigation is made. From the overall investigation, defects are mostly caused by mechanical and biological category. Decay due to termite attacks and soft rot are among the highest rank which is mostly found contributed for the seriousness deterioration due to the presence of dampness.

  16. 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…

  17. A social work study on investigating organizational relationship: A case study of sport organization

    Directory of Open Access Journals (Sweden)

    Khodayar Momeni

    2012-09-01

    Full Text Available Organizational relationship plays an important role in developing more cooperation among members of employees. Today, there is no doubt that people are mostly considered as the primary source of creating value added activities. Therefore, it is important to learn more about organizational relationship in different organizations and detect possible barriers on developing such relationships. In this paper, we present an empirical study to detect the status of organizational relationship in Sport organization of province of Esfahan, Iran. The proposed study designs a questionnaire consists of five parts including informative, freedom, one-side relationship, formality and openness. All questions were designed in Likert scale from one to five and Cronbach alpha was calculated as 0.94. The results of the study shows organizational relationship is in good position in average and all different cities of Iran.

  18. A Case Study Investigating Secondary Science Teachers' Perceptions of Science Literacy Instruction

    Science.gov (United States)

    Blackmon, Phyllis Ann

    This project study addressed the lack of inclusion of discipline literacy pedagogy in secondary classrooms in a rural school district in eastern North Carolina. Discipline literacy practices are recommended in the Common Core Standards for History/Social Studies, Science, and Technical Subjects. The district had implemented content area reading strategies across content areas, yet no significant progress in secondary students' reading abilities had been demonstrated in statewide or national assessments. The conceptual framework that drove this study was disciplinary literacy, founded by the literacy research of Shanahan, Shanahan, and Zygouris-Coe. Within a qualitative case study method, this investigation of 8 secondary science teachers' experiences teaching literacy during content instruction focused on practices of embedding science-specific reading strategies into lessons and factors that influence teachers' decisions to participate in professional development to advance their learning of discipline-specific literacy methods. Data were collected and triangulated using a focus group and 8 individual interviews. Data from both methods were analyzed into codes and categories that developed into emergent themes. Findings from the focus group and individual interviews revealed that the science teachers possessed limited knowledge of science-specific reading strategies; used random, general literacy practices; and had completed inadequate professional development on science-related topics. Positive change may occur if district leaders support teachers in expanding their knowledge and application of discipline literacy strategies through participation in discipline literacy-focused professional development. The study may provide educators and researchers a deeper understanding of disciplinary literacy and increase research on the topic.

  19. Underground geotechnical and geological investigations at Ekati Mine-Koala North: case study

    Science.gov (United States)

    Jakubec, Jaroslav; Long, Larry; Nowicki, Tom; Dyck, Darren

    2004-09-01

    Since 1998, BHP Billiton has mined diamonds at the Ekati Diamond Mine™ near Lac de Gras in the Northwest Territories of Canada. Current operations are based on mining multiple pipes by the open-pit method, but as some pits deepen, converting to underground mining is being considered. As a test of underground mining methods and to provide access to the lower elevations of the Panda and Koala pipes, the Koala North pipe is being developed for underground mining. Initially, the top 40 m of the pipe were mined as an open pit to provide grade information and a prepared surface for the transition to underground mining. Currently, Koala North is being developed as an open-benching, mechanized, trackless operation. Although the method was successfully used at several De Beers diamond operations in South Africa, it has never been tested in an Arctic environment. This case study describes basic geology, mining method layout and ongoing geological and geotechnical investigation. From the beginning of underground development, geotechnical daily routines have been fully integrated within the technical services department, which supports the operation. Geotechnical, geological and structural information obtained from underground mapping and core logging is compiled, processed, reviewed and analyzed on site by the geotechnical staff. Conclusions and recommendations are implemented as part of the operations in a timely manner. This ongoing "live" process enables the operators to make the most efficient use of resources both for ground support and excavations as well as to address safety issues, which are the top priority.

  20. Investigating Sociological Factors Affecting Vandalism (Case study: Ahvaz’s High-school Students

    Directory of Open Access Journals (Sweden)

    Eslam Heydari

    2012-10-01

    Full Text Available This research is a study on the efficient sociological factors on Vandalism across high school students of district two of Ahvaz. The research data was collected through a survey, and participants were 376 cases out of 17054 high-school students of district two. They were randomly selected by a categorical method. The dependent variable(vandalism was investigated via a questionnaire and its relationship with the independent variables such as gender, educational level, socio-economic status, relationship with vandals, feeling of weakness and abnormality, relative deprivation , and social isolation , which are driven from the theories of various sociologists, including holistic sociologists or the very classics (Durkheim or Merton and, contemporary sociologists (Cloward, Ohlin and Miller, Sutherland ,Seaman and Hirshi was hypothesized and tested. The collected data was analyzed using descriptive and inferential statistics via SPSS . Analysis of the findings confirmed the research hypothesis. Results showed that the prediction equation of the trend tendency toward Vandalistic behavior can predict 0/406 percent of the variance of the independent variable. And since the research model could predict 0/406 percent of the variance of the independent variable using seven variables (academic achievement, social-economic status, contact with offenders, feeling of powerlessness, sense of relative deprivation, sense of social isolation, and sense of anomie, it can be said that its predictive power is good.

  1. 3D NUMERICAL INVESTIGATION ON SETTLING BASIN LAYOUT: A case study on Mai Khola Hydropower Project, Nepal

    OpenAIRE

    Shrestha, Bishwo Vijaya

    2012-01-01

    This study is about 3D Numerical Investigation of Settling basin layout by using numerical modeling program SSIIM. This study is carried out by using SSIIM windows version 1 (SSIIM 1.0). SSIIM is numerical modeling software, developed at NTNU by Professor Nils Reidar B. Olsen. This program has been used for investigation numerical modeling of hydraulic and sediment transport for different layouts geometry of settling basin.In this study a case study has carried out on settling basin layout of...

  2. A Global Investigation of Child Labor: Case Studies from India, Uganda, and the United States.

    Science.gov (United States)

    Lai, Selena

    This curriculum guide was developed to help students gain a broader perspective about child labor and become more familiar with the issues, controversies, and debates that surround it. Three case studies are highlighted: (1) a street child in India; (2) child soldiers in Uganda; and (3) a migrant farm worker child in the United States. Each case…

  3. Bridging the Divide: A Case Study Investigating Digitally-Wise Teacher Perceptions of Middle School Cyberbullying

    Science.gov (United States)

    Graves, Tiffany Nicole

    2013-01-01

    The purpose of this qualitative case study was to explore the perceptions of middle school, technologically proficient, or digitally-wise teachers, regarding how they defined, prevented, recognized, and handled incidences of cyberbullying in four middle schools located in Southern Virginia. Data was collected using an open-ended questionnaire,…

  4. Should the Dead Sea Be Sustainable?: Investigating Environmental Issues Using a Case Study

    Science.gov (United States)

    Saunders, Cheston Andrew

    2016-01-01

    Many students leave the environmental science classroom with misconceptions centered on the availability of natural resources such as water. This article presents a case study where students assume the roles of various stakeholders and articulate their position on whether or not to pipe water from the Red Sea to the Dead Sea. Additionally,…

  5. An Exploratory Investigation of Online Forum Mediated Collaborative Learning of Speech Writing: A Case Study

    Science.gov (United States)

    Lata, Pushp; Luhach, Suman

    2014-01-01

    Learning Management Systems (LMS) are being integrated in the curriculum by many educational institutions to extend teaching and learning beyond classroom. This paper is based on a case study exploring the integration of LMS Nalanda created on Moodle in Effective Public Speaking (EPS) classroom to give students an additional platform to practice,…

  6. Heterogeneous bedrock investigation for a closed-loop geothermal system: A case study

    OpenAIRE

    Radioti, Georgia; Delvoie, Simon; Charlier, Robert; Dumont, Gaël; Nguyen, Frédéric

    2016-01-01

    This paper investigates bedrock heterogeneity by applying three different geophysical approaches, in order to study the long-term behaviour and the interaction between closed-loop geothermal systems. The investigated site consists of four boreholes equipped with geothermal pipes on the campus of University of Liege, Belgium. The first approach includes acoustic borehole imaging, gamma-ray logging and cuttings observation and results to a detailed fracture characterisation, rock identification...

  7. An Investigation of Sustainable Power Generation from Oil Palm Biomass: A Case Study in Sarawak

    OpenAIRE

    Nasrin Aghamohammadi; Stacy Simai Reginald; Ahmad Shamiri; Ali Akbar Zinatizadeh; Li Ping Wong; Nik Meriam Binti Nik Sulaiman

    2016-01-01

    Sarawak is the largest state in Malaysia, with 22% of the nation's oil palm plantation area, making it the second largest contributor to palm biomass production. Despite the enormous amount of palm biomass in the state, the use of biomass as fuel for power generation remains low. This study is designed to investigate the sustainability of power generation from palm biomass specifically in Sarawak by conducting a survey among the palm oil mill developers. To conduct this investigation, several...

  8. Defects Investigation in Old Timber Building: Case Study of Masjid Lama Defects Investigation in Old Timber Building: Case Study of Masjid Lama

    OpenAIRE

    Suhana Johar; Hafsah Yahiya; Adi Irfan Che-Ani; Norngainy Mohd Tawil; Abdul Gaffer Ahmad

    2013-01-01

    The aim of this study is to identify and highlights the importance parts of a conservation programs, particularly for timber building. Masjid Lama Mulong is one of a remaining cultural heritage experiencing conservation works as to restore the uniqueness of the building and its history that once existed. Made from cengal, one of the famous local hardwoods, however, it is not spared to the threat of decay and deterioration from its agent. In conservation, one of the important stages is to insp...

  9. Investigating the relationship between service quality and customer loyalty: A case study of banking industry

    OpenAIRE

    Aliakbar Aghaei; Mohammad Ali Mostafapour; Hamid Rezaei

    2013-01-01

    The present study investigates the relationship between service quality and customer loyalty in one of Iranian banks in province of Golestan, Iran named Bank Melli Iran. The population of the study consists of all customers of this branch. Using Kersity-Morgan table and simple random sampling, a number of 384 customers were selected as the participants of the study. The method of research is descriptive-correlation with a survey design. SERVQUAL scale and a researcher-made questionnaire were ...

  10. An investigation of breast cancer risk factors in Cyprus: a case control study

    OpenAIRE

    Hadjisavvas Andreas; Loizidou Maria A; Middleton Nicos; Michael Thalia; Papachristoforou Rena; Kakouri Eleni; Daniel Maria; Papadopoulos Panayiotis; Malas Simon; Marcou Yiola; Kyriacou Kyriacos

    2010-01-01

    Abstract Background Breast cancer is the most common form of malignancy affecting women worldwide. It is also the leading cancer in females in Cyprus, with approximately 400 new cases diagnosed annually. It is well recognized that genetic variation as well as environmental factors modulate breast cancer risk. The main aim of this study was to assess the strength of associations between recognized risk factors and breast cancer among Cypriot women. This is the first epidemiological investigati...

  11. Case Study: Investigating the Impact of the Child Development Associate Credentialing Process on Child Care Provider Performance

    Science.gov (United States)

    McBride, Vickie

    2013-01-01

    The purpose of this case study was to investigate what impact the child development associate (CDA) credential has on the performance of childcare providers in the 6 CDA competency areas. Each participant was interviewed using 9 open-ended questions regarding their experience. Over the past few years, a number of studies have examined the effects…

  12. Investigation of the accuracy of close-range photogrammetry – a 3D printing case study

    Directory of Open Access Journals (Sweden)

    Ognjan Lužanin

    2015-12-01

    Full Text Available 3D scanning of physical objects is one of the frequently used methods for generating input data for 3D printing process. Close-range photogrammetry represents a cost-efficient alternative to conventional 3D scanning. However, one of the basic problems in application of this method is accuracy, especially in the case of small objects with complex geometry. In this case study, a 3D-printed object of small dimensions was used to test the accuracy and precision of close-range photogrammetry. CAD Inspection was used to obtain measurements of the scanned model and compare it with the original CAD model, while the results were statistically analyzed. The results of statistical analysis showed that the scanning accuracy in this experiment did not depend on the particular cross-section of the model, while the precision of 3D scanning depended on the selection of cross-sectional profile curve.

  13. Wind Turbine Acoustic Investigation: Infrasound and Low-Frequency Noise--A Case Study

    Science.gov (United States)

    Ambrose, Stephen E.; Rand, Robert W.; Krogh, Carmen M. E.

    2012-01-01

    Wind turbines produce sound that is capable of disturbing local residents and is reported to cause annoyance, sleep disturbance, and other health-related impacts. An acoustical study was conducted to investigate the presence of infrasonic and low-frequency noise emissions from wind turbines located in Falmouth, Massachusetts, USA. During the…

  14. Investigating Lebanese Grade Seven Biology Teachers Mathematical Knowledge and Skills: A Case Study

    Science.gov (United States)

    Raad, Nawal Abou; Chatila, Hanadi

    2016-01-01

    This paper investigates Lebanese grade 7 biology teachers' mathematical knowledge and skills, by exploring how they explain a visual representation in an activity depending on the mathematical concept "Function". Twenty Lebanese in-service biology teachers participated in the study, and were interviewed about their explanation for the…

  15. A simple insightful approach to investigating a hospital standardised mortality ratio: an illustrative case-study.

    Directory of Open Access Journals (Sweden)

    Mohammed A Mohammed

    Full Text Available BACKGROUND: Despite methodological concerns Hospital Standardised Mortality Ratios (HSMRs are promoted as measures of performance. Hospitals that experience an increase in their HSMR are presented with a serious challenge but with little guidance on how to investigate this complex phenomenon. We illustrate a simple penetrating approach. METHODS: Retrospective analysis of routinely collected hospital admissions data comparing observed and expected deaths predicted by the Dr Foster Unit case mix adjustment method over three years (n = 74,860 admissions in Shropshire and Telford NHS Trust Hospital (SaTH constituting PRH (Princess Royal Hospital and RSH (Royal Shrewsbury Hospital; whose HSMR increased from 99 in the year 2008/09 to 118 in the year 2009/10. RESULTS: The step up in HSMR was primarily located in PRH (109 to 130 vs. 105 to 118 RSH. Disentangling the HSMR by plotting run charts of observed and expected deaths showed that observed deaths were stable in RSH and PRH but expected deaths, especially at PRH, had fallen. The fall in expected deaths has two possible explanations-genuinely lower risk admissions or that the case-mix adjustment model is underestimating the risk of admissions perhaps because of inadequate clinical coding. There was no evidence that the case-mix profile of admissions had changed but there was considerable evidence that clinical coding process at PRH was producing a lower depth of coding resulting in lower expected mortality. CONCLUSION: Knowing whether the change (increase/decrease in HSMR is driven by the numerator or the denominator is a crucial pivotal first step in understanding a given HSMR and so such information should be an integral part of the HSMR reporting methodology.

  16. Investigating the effects of majority voting on CAD systems: a LIDC case study

    Science.gov (United States)

    Carrazza, Miguel; Kennedy, Brendan; Rasin, Alexander; Furst, Jacob; Raicu, Daniela

    2016-03-01

    Computer-Aided Diagnosis (CAD) systems can provide a second opinion for either identifying suspicious regions on a medical image or predicting the degree of malignancy for a detected suspicious region. To develop a predictive model, CAD systems are trained on low-level image features extracted from image data and the class labels acquired through radiologists' interpretations or a gold standard (e.g., a biopsy). While the opinion of an expert radiologist is still an estimate of the answer, the ground truth may be extremely expensive to acquire. In such cases, CAD systems are trained on input data that contains multiple expert opinions per case with the expectation that the aggregate of labels will closely approximate the ground truth. Using multiple labels to solve this problem has its own challenges because of the inherent label uncertainty introduced by the variability in the radiologists' interpretations. Most CAD systems use majority voting (e.g., average, mode) to handle label uncertainty. This paper investigates the effects that majority voting can have on a CAD system by classifying and analyzing different semantic characteristics supplied with the Lung Image Database Consortium (LIDC) dataset. Using a decision tree based iterative predictive model, we show that majority voting with labels that exhibit certain types of skewed distribution can have a significant negative impact on the performance of a CAD system; therefore, alternative strategies for label integration are required when handling multiple interpretations.

  17. Investigation of an online, problem-based introduction to nuclear sciences: A case study

    International Nuclear Information System (INIS)

    An online, grant-funded course on nuclear engineering in society was developed at a large Midwestern university with the goal of providing non-majors a meaningful introduction to the many applications of nuclear science in a modern society and to stimulate learner interest in academic studies and/or professional involvement in nuclear science. Using a within-site case study approach, the current study focused on the efficacy of the online learning environment's support of learners' acquisition of knowledge and the impact of the environment on learners' interest in and beliefs about nuclear sciences in society. Findings suggest the environment successfully promoted learning and had a positive impact on learners' interests and beliefs. (authors)

  18. Case Studies

    International Nuclear Information System (INIS)

    Proven options available to Sri Lanka for large scale electricity generation in the future are coal-fired thermal, oil-fired thermal and Nuclear. Four case studies for groups participated are indicated. Case study for group 1 is comparison of the three options by taking into consideration the capital and recurrent expenditure involved. Environmental effects of the three options are also given. Case study for group 2 is economic comparison of three renewable energy based power generation system. Case study for group 3 is based on energy conservation, efficiency, improvement and demand management. Assuming that a continuous saving of 20 MW of demand from 1996 onwards is effective two projects are suggested to achieve this result. Case study for group 4 is a feasibility study for hydro power development of the Kukule Ganga (river) in Sri Lanka. Participants are required to evaluate one of the three optional development concepts which are technically feasible

  19. An empirical investigation to analysis the dimensions of cultural security: A case study of educational system

    Directory of Open Access Journals (Sweden)

    Elyas Nouraei

    2013-02-01

    Full Text Available The purpose of this study is to explore the concept of cultural security and its practical implications in a case study of educational system. There are several definitions of culture, which describe different aspects of cultural security. In fact, cultural security tends to show various behaviors, thinking, beliefs and other people’s perspectives in a society, which represents the overall circumstances. Cultural security and its issues make it possible to have a clear image of a society or community. This paper aims to identify the important dimensions of cultural security in terms of basic components of cultural security identified in a framework. Therefore, after identifying the components, using a questionnaire, required data are gathered from the universities of the city of Ilam, Iran and they are analyzed by SPSS18.0 software and its appropriate statistical tests.

  20. Investigating different factors influencing job satisfaction: A case study of cement industry

    Directory of Open Access Journals (Sweden)

    Mina Shirvani

    2013-10-01

    Full Text Available Job satisfaction plays an important role on increasing business productivity and efficiency. This paper presents an empirical investigation to study the relationship between job satisfaction and employees’ personal characteristics including gender, marital status, etc. The proposed study designs a questionnaire and distributes it among 244 out of 800 employees who worked for cement industry in Iran. The data are analyzed using different statistical tests such as t-student and analysis of variance. The results indicate that while there was not any meaningful relationship between gender and job satisfaction there was some meaningful relationship between marital status and job satisfaction.

  1. Investigating the relationship between service quality and customer loyalty: A case study of banking industry

    Directory of Open Access Journals (Sweden)

    Aliakbar Aghaei

    2013-07-01

    Full Text Available The present study investigates the relationship between service quality and customer loyalty in one of Iranian banks in province of Golestan, Iran named Bank Melli Iran. The population of the study consists of all customers of this branch. Using Kersity-Morgan table and simple random sampling, a number of 384 customers were selected as the participants of the study. The method of research is descriptive-correlation with a survey design. SERVQUAL scale and a researcher-made questionnaire were used to examine service quality and customer loyalty, respectively. Pearson correlation formula was run to analyze the data. The results showed a significant relationship between different aspects of service quality and customer loyalty in this particular branch of bank.

  2. An Investigation of Sustainable Power Generation from Oil Palm Biomass: A Case Study in Sarawak

    Directory of Open Access Journals (Sweden)

    Nasrin Aghamohammadi

    2016-04-01

    Full Text Available Sarawak is the largest state in Malaysia, with 22% of the nation's oil palm plantation area, making it the second largest contributor to palm biomass production. Despite the enormous amount of palm biomass in the state, the use of biomass as fuel for power generation remains low. This study is designed to investigate the sustainability of power generation from palm biomass specifically in Sarawak by conducting a survey among the palm oil mill developers. To conduct this investigation, several key sustainability factors were identified: the security of the biomass supply, the efficiency of conversion technology, the existing network system, challenges and future prospects for power generation from palm biomass. These factors were assessed through a set of questionnaires. The returned questionnaires were then analysed using statistical tools. The results of this study demonstrate that Sarawak has biomass in abundance, and that it is ready to be exploited for large scale power generation. The key challenge to achieving the renewable energy target is the inadequate grid infrastructure that inhibits palm oil developers from benefiting from the Feed-in-Tariff payment scheme. One way forward, a strategic partnership between government and industrial players, offers a promising outcome, depending on an economic feasibility study. The decentralization of electricity generation to support rural electrification is another feasible alternative for renewable energy development in the state.

  3. An investigation on how TQM influences employee performance: A case study of banking industry

    Directory of Open Access Journals (Sweden)

    Saeed Hakami Nasab

    2014-01-01

    Full Text Available This paper presents an empirical investigation to study the relationship between employee performance and TQM. The proposed study of this paper designs two questionnaires for TQM and performance measurement and distributes them among some employees who worked for one of Iranian banks in city of Semnan, Iran. The result of Kolmogorov–Smirnov test confirms that all data are normally distributed and the study uses Pearson correlation to investigate the relationship between various components of the survey. The result of the implementation of Pearson correlation ratio indicates that there was a positive and meaningful relationship between employee performance and TQM components (r=4.6223, P-value=0.000. In addition, there are some positive and meaningful relationships between TQM components and employee performance. The highest correlation belongs to relationship between employee performance and feedback (r=4.6223, P-value=0.000 followed by training and development (r = 0.441, P-value = 0.000 and communication (r = 4.2861, P-value = 0.000.

  4. Investigating Consumers' Willingness to Pay for Organic Green Chicken in Iran (Case Study: Rasht City

    Directory of Open Access Journals (Sweden)

    Mohammad Kavoosi Kalashami

    2012-12-01

    Full Text Available Health and safety are important factors in today's life. Mostof studies show that consuming the chicken that has antibiotic caused different diseases like digestive vessel cancer. Attentionto controlled use of antibiotics can play a key role insociety health which considered in the production of greenchicken. Planning for increasing the production of mentionedchicken needs the investigation of consumers' WTP. So, usingdouble bound contingent valuation method and logit model,present study estimates consumers' WTP for green chicken inRasht city. Among the explanatory variables applied in logitmodel, income and education level had positive and significanteffects on WTP for green chicken. Results revealed that averageWTP for a kg of green chicken equals to 37279 Rials, andbecause this WTP does not compensate the production costs,government protection such as Green subsidy should be consideredin order to expand green products consumption in Iran.

  5. Investigating the effect of information technology on strategic management: A case study of after sale services

    Directory of Open Access Journals (Sweden)

    Majid Farnia

    2013-12-01

    Full Text Available Information technology plays essential role on the success of organizations; it eases the access on information, reduces time on reaching the necessary information and builds a better communication among different groups of an organization. This paper performed an empirical investigation to find the effects of information technology on strategic management in one of Iranian automakers in after sales services in Iranian auto industry. The proposed study designed questionnaire and distributed among some experts and using t-student test examined the effect of information technology on various factors. The study design a questionnaire in Likert scale and distributes it among some experts and using some statistical observation measures the effects of information technology on various factors. The results have confirmed that information technology influenced on strategy execution and control policy.

  6. Investigating the Markov Property on Stock Returns: A Case Study of Ghana Stock Exchange

    Directory of Open Access Journals (Sweden)

    Sampson Wiredu

    2014-03-01

    Full Text Available This study was conducted to investigate the Markov property using daily, weekly and monthly stock returns of Accra Brewery Limited (ABL of the Ghana Stock Exchange (GSE spanning from the period of November, 1990 to August, 2007. Using Shapiro-Wilk normality test, the study revealed that the returns are not normally distributed as they were leptokurtic in nature indicating high volatility. Using several tests namely, the correlogram, ADF, PP and KPSS, Runs and Wright’s non-parametric Variance ratio tests, the research concluded that the daily, weekly and monthly returns of GSE were stationary at level and do not follow random walk, hence do not have the Markov property.

  7. Sediment Transport Investigations in Indian Ports Using Radiotracer Technique [Case Study: Radiotracer Applications for Investigation of Bedload Transport of Sediments

    International Nuclear Information System (INIS)

    India has a long coastline of about 7640 km, out of which 2650 km is on the East Coast and 3360 km on the West Coast and the remaining is in different islands such as Andaman, Nicobar etc. As compared to the West Coast, the East Coast faces severe wave climate and has a relatively shallow seabed. The major rivers of India i.e. Ganga, Brahmaputra, Mahanadi, etc. discharge into the Bay of Bengal and bring along with them a large quantities of sediments. The sediments are carried along the coast by the alongshore currents generated by the waves breaking obliquely to the coastline. There are twelve major ports, six on the West Coast and six on the East Coast of India. In addition to this, there are over one hundred and forty intermediate/minor ports and other marine engineering projects along the coastline. The locations of the major and intermediate ports of India are shown. The existing ports and marine engineering projects are faced with the problem of continuous maintenance dredging and dumping operations for maintaining the depth of the navigation channels. In addition to this, capital dredging is also carried out during the construction of the new projects and expansion of the existing projects. The dredging operations constitute major expenditure in existing and new projects. The average annual maintenance-dredging requirement in various major ports in India ranges approximately 20-70 million cubic meters. This huge quantity of the dredge material is to be disposed off at suitable locations either inshore or offshore. In case of major Indian ports, disposing off at inshore locations is not economically and technically feasible option. Hence it becomes imperative that the dredged materials be disposed off at suitable offshore locations, from where it does not find its way back to the channel. In addition to this, the selected site should be such that the turn around time of the dredger is kept minimal to economize the dredging operation

  8. 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.

  9. Geophysical Investigation of Groundwater Regime: Case Study of Etioro-Akoko Southwestern Nigeria

    Directory of Open Access Journals (Sweden)

    Cyril C. Okpoli

    2014-10-01

    Full Text Available The electrical resistivity study of Etioro-Akoko has become imperative because of non-functional potable water. The study aims at resolving the geology setup through hydro-geophysical methods and modeling of the wells. Dipole- dipole, Schlumberger array and the positioning of the hand dug wells were carried out in the study area.Dipole-dipole array results in the study area do not show structures indicative of high groundwater yield potential. Three layers comprising of the topsoil, weathered layer, and the fresh basement were delineated using the Schlumberger array with overburden thicknesses ranging from 4.5-7.7m.The values are too thin to support productive wells. Well inventory (depth to well-base results ranges from 5.3-7.3m and were used to model the direction of flow pattern of groundwater. The southernmost part of the map is continuously discharged. To tap into the groundwater resources in this area requires detailed geophysical mapping and investigations of the discharge area.DOI: http://dx.doi.org/10.5755/j01.erem.69.3.5334

  10. Satellite remote sensing and multiscale geophysical investigations for geoarcheology: case studies from Perù

    Science.gov (United States)

    Capozzoli, Luigi; Delle Rose, Marco; Lasaponara, Rosa; Masini, Nicola; Rizzo, Enzo; Romano, Gerardo

    2013-04-01

    Satellite remote sensing as well as geophysical techniques proved to be successful tools for characterizing archaeological areas. In order to provide useful information on the presence of buried structures and the iteration between the aqueducts (Puquios) and the local hydrogeological setting, a multi-disciplinary and multi-scale approach based on the integration of satellite remote sensing and geophysical techniques was applied in different sites of Perù. Such investigations were carried out by the Italian mission ITACA, funded by the Italian Ministry Affairs and composed of researchers of two institutes of CNR (IMAA and IBAM), which provides a scientific support for archaeological research, since 2007. In detail, the archaeological Cahuachi site (0-400 AD) was investigated by geoelectrical and georadar prospecting, in order to highlight buried structures and platforms. The detection and characterization of perhispanic aqueducts and canals were the main aims in the Nasca drainage basin and in the Ceremonial Centre of Pachacamac (500-1400 ADF). Finally, the integration of all data acquired by the different remote sensing techniques allowed for spatially characterizing the archaeological features, thus providing important information for the planning of next archaeological excavations and glimpses into the use and management of water resources by prehispanic civilizations. References Lasaponara R., Masini N., Rizzo E., Orefici G. 2011. New discoveries in the Piramide Naranjada in Cahuachi (Peru) using satellite, Ground Probing Radar and magnetic investigations, Journal of Archaeological Science, 38(9), 2031-2039, doi:10.1016/j.jas.2010.12.010 Masini N., Lasaponara R., Rizzo E., Orefici G. 2012. Integrated Remote Sensing Approach in Cahuachi (Peru): Studies and Results of the ITACA Mission (2007-2010), In: Lasaponara R., Masini N. (Eds) 2012, Satellite Remote Sensing: a new tool for Archaeology, Springer, Verlag Berlin Heidelberg, ISBN 978-90-481-8800-0, doi: 10

  11. Investigating the relationship of lightning activity and rainfall: A case study for Crete Island

    Science.gov (United States)

    Iordanidou, V.; Koutroulis, A. G.; Tsanis, I. K.

    2016-05-01

    The relationship of lightning activity and rainfall is investigated for rain events of variable intensity. Rain data from 22 gauging stations over the island of Crete and lightning activity from the Global Lightning Network including both cloud-to-ground and some cloud flashes are analyzed for the period September 2012 to June 2014. Local thunderstorms' characteristics are investigated both individually as well as in groups according to the results of k-means clustering algorithm in 3 dimensions (space (x, y) and time (t)) in which the number of clusters is decided by G-means algorithm. Correlation of non-zero pairs of rain intensity and number of flashes is examined at various time intervals, time lags and effective radii. Also, correlation of flash count within 50 km radius around the stations is examined for the rain events of maximum hourly intensity for each gauging station. The highest coincidence of lightning clusters with intense rain events reaches 60% when gauges are 25-30 km from the cluster center. Maximum correlation within non-zero pairs of rain intensity and flashes number is obtained for more intense rain (99th percentile) and for increased flash count within the searching area (more than 10 flashes). Also, correlation is stronger for shorter time windows. The findings of this study improve the understanding of thunderstorm events and could provide staple information for the improvement of forecasting extreme events.

  12. Geophysical and geological investigations of subsurface reservoirs : case studies of Spitsbergen, Norway

    Energy Technology Data Exchange (ETDEWEB)

    Baelum, Karoline

    2011-07-01

    The thesis gives a description of the subsurface and outcrop geology at a number of localities on Svalbard through a selection of various geophysical and geological methods. The localities represent a series of geological settings of varying scale, from near surface paleokarst and glacial environments to large scale geological features such as fault zones, grabens and dolerite intrusions. The geophysical and geological methods deployed likewise represent both detailed small scale investigations such as Lidar, radar and geoelectric investigations on and near the surface, and seismic investigations covering larger areas to a depth of several kilometers. The overall aim for all the studies has been to better understand reservoir and cap rock/ice systems in a barren arctic desert characterized by a frozen ground that challenges common geophysical methods. The investigations undertaken in connection with this thesis cover several areas The first part addresses the Billefjorden fault zone (BFZ) with its eastern hanging wall classic rift-basin. This fault zone can be traced for more than 200 km as a lineament that runs almost the entire length of Spitsbergen, from Wijdefjorden in the north to Storfjorden in the south. The seismic data along with surface observations and Lidar scans illustrate the long and complicated history of the BFZ and associated basin, from the initial formation via linkage of reverse faults in the Devonian, through Carboniferous reactivation as a normal fault with adjacent rift-basin in an extensional tectonic regime, to finally Tertiary contraction seen as fault reactivation and basin inversion in connection with the formation of the west-coast fold and thrust-belt. Especially the development of the Carboniferous rift-basin is of interest. An integrated study by seismic and georadar mapping, and Lidar data interpretation combined with outcrop analysis of faults and sedimentary succession, have shed new, detailed information on the good sandstone

  13. Investigating important factors influencing customer relationship management: A case study from banking industry

    Directory of Open Access Journals (Sweden)

    Ali Sedigh

    2013-12-01

    Full Text Available This paper performs an investigation on measuring the effect of different factors on customer relationship management (CRM for different branches of an Iranian banks located in various regions of city of Tehran, Iran. The proposed study selects a sample of 275 managers and using structural equation modeling examines the effects of five variables including CRM knowledge, employment’s information technology skills, specialty, strategic use, CRM performance on the performance of CRM. Cronbach alpha has been calculated for the questionnaire as 0.881, which is well above the minimum acceptable level. The survey has concluded that there were meaningful relationships between all four mentioned variables and performance of CRM. In other words, knowledge and information technology influence on improving employments’ skills, which increase strategic use of CRM components and this would improve CRM performance.

  14. Investigation of Foundation Failure of a Residential Building – A Case Study

    Directory of Open Access Journals (Sweden)

    D. Nagarajan

    2014-04-01

    Full Text Available Movement and distress in low rise building most commonly occur as a result of interaction between the footing system and the ground. This summarizes the study that is carried out to evaluate the possible causes of distress in the G+1 residential building founded on shallow foundation in Chennai, Tamilnadu, India by Detailed Investigation. Disturbed and Undisturbed samples are collected by drilling borehole up to significant depth by auger. Laboratory tests are carried out on disturbed and undisturbed soil samples obtained from the site of distressed building. The cause of failure of the structure are identified by considering the soil properties, intensity of loading, nature of foundation and pattern of cracks developed. Based on the degree of distress, the suitable measures are recommended.

  15. An investigation on important factors influencing consumer purchase: A case study of food products

    Directory of Open Access Journals (Sweden)

    Mohammad Haghighi

    2014-01-01

    Full Text Available This paper presents an empirical investigation to study the effect of five factors on purchasing food product including brand and reputation, being green product producer, quality of packaging, taste of food products and materials used in products. The study designs a questionnaire consists of 20 questions, distributes 440 questionnaires among some consumers who were regular customers of food chains in west part of city of Tehran, Iran and managed to collect 225 properly filled ones. The study uses binomial test to verify five hypothesis of the survey and it has confirmed the effects of four variables including brand and reputation, quality of packaging, taste of food products and materials used in products. In our survey, there are some positive and meaningful correlations among different pairs of five variables of the survey where the highest correlation is between materials used in products and quality of packaging (r=0.606, Sig. = 0.000 and between Quality of packaging and being green product producer (r=0.545, Sig. =0.000.

  16. Investigating audiences’ attitudes towards local radio programs: A case study of city of Esfahan

    Directory of Open Access Journals (Sweden)

    Faezeh Taghipour

    2013-02-01

    Full Text Available For almost a century, radio stations have been some primary sources for presenting arts, entertainment, news, etc. and the primary concern on many studies is to understand audience attitude on this media. This paper attempts to investigate audience attitude on radio programs broadcasted in city of Esfahan, Iran. The proposed study selects random sample of 600 out of 1,745,428 residence of this city where 345 people actively were listening to these programs, actively. All questions were designed in Likert scale and Cronbach alpha was 0.941, which was well above the desirable level and validated the survey. According our survey, the most popular part of radio programs was associated with news where 78.3% of the audiences were listening to these programs. According to our survey, audiences were mostly satisfied with family oriented programs and the mean score was 4.05. The other observation indicates that people have good attitude towards educational guidance programs (mean=3.37 and programs related to people and officials (mean=3.41. The results of Freedman test with Chi-Square value of 52.507 determines that there is meaningful difference among different components (mean difference = -0.23 and P-value =0.022. We have also performed an investigation to find out whether there is any difference between different components of this survey in terms of participants’ personal characteristics such as age, gender, educational background and job. Our survey only confirms the mean difference in terms of job specifications and other personal characteristics did not have any impact on people’s attitude. The other observation in our survey indicates that there is a difference between students and people with no job or housekeeper on their attitudes towards educational programs.

  17. A prospective case-control study to investigate retinal microvascular changes in acute dengue infection.

    Science.gov (United States)

    Tan, Petrina; Lye, David C; Yeo, Tun Kuan; Cheung, Carol Y; Thein, Tun-Linn; Wong, Joshua G; Agrawal, Rupesh; Li, Ling-Jun; Wong, Tien-Yin; Gan, Victor C; Leo, Yee-Sin; Teoh, Stephen C

    2015-01-01

    Dengue infection can affect the microcirculation by direct viral infection or activation of inflammation. We aimed to determine whether measured retinal vascular parameters were associated with acute dengue infection. Patients with acute dengue were recruited from Communicable Diseases Center, Singapore and age-gender-ethnicity matched healthy controls were selected from a population-based study. Retinal photographs were taken on recruitment and convalescence. A spectrum of quantitative retinal microvascular parameters (retinal vascular caliber, fractal dimension, tortuosity and branching angle) was measured using a semi-automated computer-based program. (Singapore I Vessel Assessment, version 3.0). We included 62 dengue patients and 127 controls. Dengue cases were more likely to have wider retinal arteriolar and venular calibers (158.3 μm vs 144.3 μm, p dengue coincided with decrease in retinal vascular calibers and venular fractal dimension. Dengue patients have altered microvascular network in the retina; these changes may reflect pathophysiological processes in the immune system.

  18. ROLE OF LAPAROSCOPY IN INVESTIGATION OF FEMALE INFERTILITY: A RETROSPECTIVE STUDY OF 50 CASES

    Directory of Open Access Journals (Sweden)

    Sailatha

    2014-07-01

    Full Text Available : Infertility is not only a medical, but a serious social problem as well, especially in our country. Use of diagnostic and therapeutic laparoscopy in infertility has been a focus of attention in recent years and is found to be very effective method in evaluating these cases. Traditional way to assess the uterine cavity, tubal structures and tubal patency was hysterosalpingography, but it has now largely been superseded by hysteroscopy and laparoscopy. It is concluded that laparoscopy is useful in diagnosing cases with endometriosis, tubal factor infertility and exclusion of bilateral anatomical tubal pathology by diagnostic laparoscopy could avoid IVF treatment in these cases.

  19. Investigation of the Conservation Practices of Historical Environments within Urban Landscape Design: Beypazari Case Study

    Directory of Open Access Journals (Sweden)

    M.E. Yazgan

    2009-09-01

    Full Text Available Historical environments are cultural values which contact between past and the today. They have historical, artistic, documentary, functional, etc. values. They have an important role upon the identity of today’s ordinary cities becoming similar structures. For these values and importance, they have been preserved and necessary attention and restoration done. Recently, it has been emphasized that for the conservation of the physical and socio-cultural structure, conservation plans are inadequate and protective administrative plans and models are necessary. For this reason, in this study the aim is the examining of the relationship between the conservation and landscape architecture during the conservation and renovation practices of the historical environment. Beypazarı Historical Settlement having a historical texture has been chosen for the study area. To determine the theoretical basis of the investigation, literature have been reviewed on the issues including historical environment, urban landscape design, conservation and renovation and Beypazarı, the survey and the SWOT(Strength, Weakness, Opportunities, Treatments Analysis on the area done, as a result of data analysis and evaluation for Beypazarı sample the urban design principles and the local administration model were suggested. It is concluded that the local administration is responsible for the conservation and the renovation practices rather than the central administration, conservation should be considered so as to include buildings, gardens, streets, texture and whole city and these buildings have a determining role on urban identity.

  20. Human-Centered Approaches in Geovisualization Design: Investigating Multiple Methods Through a Long-Term Case Study

    OpenAIRE

    Lloyd, D; Dykes, J.

    2011-01-01

    Working with three domain specialists we investigate human-centered approaches to geovisualization following an ISO13407 taxonomy covering context of use, requirements and early stages of design. Our case study, undertaken over three years, draws attention to repeating trends: that generic approaches fail to elicit adequate requirements for geovis application design; that the use of real data is key to understanding needs and possibilities; that trust and knowledge must be built and develo...

  1. LSS, a problem solving skill for graduates and SMEs: Case Study of investigation in a UK Business School curriculum

    OpenAIRE

    Shokri, Alireza; Nabhani, Farhad

    2015-01-01

    Purpose - This research aims to investigate the feasibility of a systematic Lean Six Sigma (LSS) education through the curriculum of business schools to respond to the existing gap between the graduate’s expectation of employability and skill requirements by the Small and Medium Sized Enterprises (SMEs). Design/approach/methodology - One UK business school has been used as a case study to conduct an extensive module and programme review followed by a semi-structured interview with the pot...

  2. Investigation of ionospheric effects on SAR Interferometry (InSAR): A case study of Hong Kong

    Science.gov (United States)

    Zhu, Wu; Ding, Xiao-Li; Jung, Hyung-Sup; Zhang, Qin; Zhang, Bo-Chen; Qu, Wei

    2016-08-01

    Synthetic Aperture Radar Interferometry (InSAR) has demonstrated its potential for high-density spatial mapping of ground displacement associated with earthquakes, volcanoes, and other geologic processes. However, this technique may be affected by the ionosphere, which can result in the distortions of Synthetic Aperture Radar (SAR) images, phases, and polarization. Moreover, ionospheric effect has become and is becoming further significant with the increasing interest in low-frequency SAR systems, limiting the further development of InSAR technique. Although some research has been carried out, thorough analysis of ionospheric influence on true SAR imagery is still limited. Based on this background, this study performs a thorough investigation of ionospheric effect on InSAR through processing L-band ALOS-1/PALSAR-1 images and dual-frequency Global Positioning System (GPS) data over Hong Kong, where the phenomenon of ionospheric irregularities often occurs. The result shows that the small-scale ionospheric irregularities can cause the azimuth pixel shifts and phase advance errors on interferograms. Meanwhile, it is found that these two effects result in the stripe-shaped features in InSAR images. The direction of the stripe-shaped effects keep approximately constant in space for our InSAR dataset. Moreover, the GPS-derived rate of total electron content change index (ROTI), an index to reflect the level of ionospheric disturbances, may be a useful indicator for predicting the ionospheric effect for SAR images. This finding can help us evaluate the quality of SAR images when considering the ionospheric effect.

  3. ROLE OF LAPAROSCOPY IN INVESTIGATION OF FEMALE INFERTILITY: A RETROSPECTIVE STUDY OF 50 CASES

    OpenAIRE

    Sailatha; Sathiya; Famida.; Vijayalakshmi; Renuka; Misha Pepsi

    2014-01-01

    : Infertility is not only a medical, but a serious social problem as well, especially in our country. Use of diagnostic and therapeutic laparoscopy in infertility has been a focus of attention in recent years and is found to be very effective method in evaluating these cases. Traditional way to assess the uterine cavity, tubal structures and tubal patency was hysterosalpingography, but it has now largely been superseded by hysteroscopy and laparoscopy. It is concluded that lap...

  4. CASE-COHORT STUDY OF STYRENE EXPOSURE AND ISCHEMIC HEART DISEASE INVESTIGATORS

    Science.gov (United States)

    Investigators examined workers exposed to styrene while working in styrene-butadiene polymer manufacturing plants between 1943 and 1982. Workers who had died from ischemic heart disease were compared to a subgroup of all men employed in two styrene-butadiene polymer manufac...

  5. Investigating the Role of Cultural Capital and Organisational Habitus in Architectural Education: A Case Study Approach

    Science.gov (United States)

    Payne, Jennifer Chamberlin

    2015-01-01

    Compared to other professions in recent years, architecture has lagged woefully behind in attracting and retaining a diverse population, as defined by class, race and gender. This research investigates the extent to which architecture culturally reproduces itself, specifically examining the socialisation process of students into the subculture of…

  6. Investigating commuting flexibility with GPS data and 3D geovisualization: a case study of Beijing, China

    NARCIS (Netherlands)

    Shen, Y.; Kwan, M.-P.; Chai, Y.

    2013-01-01

    Using the notion of commuting flexibility, this paper investigates the intra-personal day-to-day variability and flexibility of commuting behavior using a 7-day GPS dataset collected in Beijing, China. Four dimensions of commuting variability are evaluated: space, time, travel mode, and travel route

  7. Investigating temperature breaks in the summer fruit export cold chain: A case study

    Directory of Open Access Journals (Sweden)

    Heinri W. Freiboth

    2013-05-01

    Full Text Available There is concern in the South African fruit industry that a large amount of fruit and money is lost every season due to breaks in the fruit export cold chain. The possibility of a large percentage of losses in a significant sector of the economy warranted further investigation. This article attempted to highlight some of the possible problem areas in the cold chain, from the cold store to the port, by analysing historic temperature data from different fruit export supply chains of apples, pears and grapes. In addition, a trial shipment of apples was used to investigate temperature variation between different pallets in the same container. This research has added value to the South African fruit industry by identifying the need to improve operational procedures in the cold chain.

  8. Investigating the Use of Strategic Reading Activities in College English Class:A Case Study

    Institute of Scientific and Technical Information of China (English)

    刘江凤

    2015-01-01

    This paper, by adopting a qualitative research method, investigated the use of strategic reading activities by two female teachers in College English classes. Results showed that their commonly-used strategic reading activities in college English class⁃es reflected three types of reading comprehension strategies including use of prior knowledge, use of text elements with a high infor⁃mation value, and use of structure-marking elements in the text. Pedagogical implications were also discussed.

  9. Investigating the Employed Married Women's Awareness Level of Marriage Rights: Case Study -- Neiriz, Iran

    OpenAIRE

    Zainab Ghadar Band Shirazifard; Ali Edalati

    2012-01-01

    This survey is aimed to investigate the employed married women's degree of awareness of the marriage rights. Sample includes 100 employed married women of Neiriz city who were selected through randomized sampling. The Morgan's and Krejcie’s table was used in order to calculate the sample size. From the results, it becomes clear that there is a meaningful relationship between the degree of awareness of the marriage rights. It has also shown that there is a significant relationship between age ...

  10. An investigation on important factors influencing customer repurchase: A case study of Airline agencies

    OpenAIRE

    Mohammadreza Rahimi Shamsabadi; Naser Azad

    2012-01-01

    During the past few years, there has been an increase trend on purchasing via internet, which indicates a steady growth on this internet service. There are different advantages on e-purchase services such as availability of usage, fast and reliable services, etc. The purpose of this survey is to investigate on different influencing factors on customer's fidelity on purchasing air ticket from different agencies located in Tehran, Iran. The Cronbach Alpha validates our results. The proposed con...

  11. Achieving Rigour and Relevance in Information Systems Studies: Using grounded theory to investigate organizational cases

    Directory of Open Access Journals (Sweden)

    Hans Lehmann, Ph.D.

    2005-11-01

    Full Text Available This paper builds on the belief that rigorous Information Systems (IS research can help practitioners to better understand and to adapt to emerging situations. Contrary to the view seeing rigour and relevance as a dichotomy, it is maintained that IS researchers have a third choice; namely, to be both relevant and rigorous. The paper proposes ways in which IS research can contribute to easing the practitioners’ burden of adapting to changes by providing timely, relevant, and rigorous research. It is argued that synergy between relevance and rigour is possible and that classic grounded theory methodology in combination with case-based data provides a good framework for rigorous and relevant research of emerging phenomena in information systems.

  12. Case study: Findings and lessons learned from investigating a uranium intake and the corresponding dose calculations

    International Nuclear Information System (INIS)

    Full text: Purpose: To discuss the findings of an investigation into uranium intake and to discuss the lessons learned from the subsequent bioassay monitoring and dose calculations. Method: An investigation was held to determine direct and root causes after elevated air concentration levels were reported during the execution of an ad-hoc task. A programme of bioassay monitoring (urine sampling and lung counts) was implemented for the involved staff and committed effective doses were calculated. Major findings of the investigation: a) Inadequate pre-task assessment led to hazards not being identified and subsequently proper control measures were not implemented; b) Inadequate localised control of contamination led to contamination of worker's clothes and faces and contamination of rest of area; c) Workers were complacent which led to a lapse in safety awareness and subsequently they removed their face masks during the task. Problems experienced with bioassay monitoring and dose calculations: a) Some bioassay samples were not taken or were given incorrectly; b) Calculating doses were difficult due to lack of information regarding date of intake; whether there were other possible intakes; and the physiochemical nature of the uranium; c) Weak correlation between predicted and actual bioassay data; d) Period between starting bioassay monitoring and the actual event was too long. Conclusions: a) Shortcomings in the control of contamination with protective clothing and during the execution of ad-hoc tasks; b) Identifying hazards and assessing it is extremely dependant on the skill and capabilities if the Radiation Protection Officers; c) Instructions to workers regarding sampling of urine and arrangements around the sampling should be very specific with only one person responsible for managing the process; d) Be aware of the psychological impact on the affected workers; e) 2 nd Independent dose calculation important for verifying doses; f) Detection capabilities and

  13. The Pinellas Plant RCRA Facility Investigation: Costs and schedules - A case study

    International Nuclear Information System (INIS)

    A Remedial Investigation of the potential waste release sites at the Pinellas Plant, Largo, Florida, was started in 1988. This effort was the precursor to the Resource Conservation and Recovery Act (RCRA) Facility Investigation (RFI) that began two years later. The Hazardous and Solid Waste Amendments (HSWA) permit was issued on 9 February 1990 by the United States Environmental Protection Agency (EPA) Region IV. The Pinellas Plant RFI for those solid waste management units (SWMUs) identified in the HSWA permit was divided into three major phases: (1) preparation of the RFI Plan, (2) implementation of RFI Field Work, and (3) preparation of the RFI Report. The entire effort took three years at a cost of approximately $2 million. This paper presents a cost, schedule, and regulatory overview of the RFI activities at the Pinellas Plant. The purpose of this is (1) to illustrate the impact of increased knowledge for refining the cost estimates and duration of planned tasks within the activities, and (2) to highlight the technical issues and changing regulatory requirements that affected the cost and schedule of the RFI activities. A summary of lessons learned and of fiscal approaches and project scheduling used are presented to provide insights for management of similar environmental restoration (ER) activities at other installations. (author)

  14. Contaminated site investigation using nuclear technique: a case study of temporary transformer storage sites in Ghana

    International Nuclear Information System (INIS)

    Recent introduction of man-made toxic chemicals, and the massive relocation of natural materials to different environmental compartment like soil, ground water and atmosphere, has resulted in severe pressure on the self- cleansing capacity of recipient ecosystems. Various accomulated pollutants and contaminants such as polychlorinated biphenyls (PCBs) are of much concern relative to both human and ecosystemm exposure and potential health impact. PCBs which are resistant to degradation and bioremediation accumulated in different niches of the biosphere. This significantly affects the ecological balances and cause adverse health effect on both human and the environment. Temporal transformer storage sites at four locations in Ghana (Tema, Temale, Bolgatanga and Wa) were investigated for PCB contamination using nuclear techniques. Analysis of soil samples from four temporal transformer storage sites revealed that the soil samples from Tema, Tamale, Bolgatanga and Wa were generally sandy with pH and EC ranging between 6.24 - 7.29 and 44.60 - 188.30 respectively. The PCB levels detected in the soil samples from the various locations varied considerably with mean ranging between 7.69 and 51.92 mg/kg. The highest mean PCB level was recorded at the Tema temporal transformer storage site (51.92 mg/kg), whilst the least mean level of 7.69 mg/kg was recorded at Wa storage site. At Tamale the individual levels range between 3.57 mg/kg and 38.70 mg/kg while at Bolgatanga it was 6.85 - 16.30 mg/kg and Wa, 6.08 - 14.70mg/kg. About 9% of soil samples from temporal transformer storage sites analysed had total PCBs concentrations above the 25mg/kg and 33 mg/kg level recommended by the Canadian Council of Ministers of environment (CCME) and EPA Ghana respectively for the protection of environment and human health. Generally, the Levels of PCBs in soil samples were found to decrease with increasing depth at all the temporal transformer storage sites. Results obtained using the EPA's L

  15. An investigation on important factors influencing customer repurchase: A case study of Airline agencies

    Directory of Open Access Journals (Sweden)

    Mohammadreza Rahimi Shamsabadi

    2012-04-01

    Full Text Available During the past few years, there has been an increase trend on purchasing via internet, which indicates a steady growth on this internet service. There are different advantages on e-purchase services such as availability of usage, fast and reliable services, etc. The purpose of this survey is to investigate on different influencing factors on customer's fidelity on purchasing air ticket from different agencies located in Tehran, Iran. The Cronbach Alpha validates our results. The proposed conceptual model of this paper is estimated using multi-variable regression model and the results indicate that direct factors influence customer satisfaction, significantly. The results indicate that while customer perception does not have any relationship with repurchase but it has direct relationship with customer's perception and trust.

  16. An Investigation about obstacles of Mobile Commerce in Iran (A case study in Saravan City

    Directory of Open Access Journals (Sweden)

    Baqer Kord

    2012-03-01

    Full Text Available The main purpose of the present paper is an investigation about obstacles and challenges in development of mobile commerce in Iran. To notice the present infrastructure and the ratio of high influence of mobile commerce and its availability and being at the hand of common people as one of main tools in mobile commerce, in the world as well as in Iran, people have tendency and are going for mobile commerce and it is also attracting general attentions of people. In this paper it investigate the unique benefits of mobile commerce using a descriptive field survey to access barriers and obstacles which are facing to the development of mobile commerce. Samples and statistical research population are teachers in Saravan city of Sistan and Baluchestan in south of Iran which are using mobile phone for paying light and water bills or doing business and financial transactions. The samples were choosing among 300 of so-call teachers which selected in order random tools of data collection was questionnaire which collected after 15 days. The data were analyzed by SPSS software. The result of this analysis is showing that information technology, in the development of mobile commerce is facing many problems and challenges such as: the limitation in extension of internet band, inappropriate user accepted connector mobile equipments, none existence of using mobile commerce culture in trade, lack of the security feeling for users technical equipment limitations and also mobile network stability. And scale of importance of each one from the view of users is different. At the end to overcome these problems and barriers and to accelerate the development of mobile commerce which is the requirement of the modern life, with the results based on and come out from the present paper some strategies are going to be shown.

  17. Investigating Factors Affecting Environmental Behavior of Urban Residents: A Case Study in Tehran City- Iran

    OpenAIRE

    Khalil Kalantari; Hossein S.   Fami; Ali Asadi; H. M. Mohammadi

    2007-01-01

    Environmental problems such as air and water pollution, urban garbage and climate changes in urban areas are the results of human behavior. Only change in human behavior can reduce these environmental problems. Thus studying attitude and behavior of people is a precondition to change this situation. So the main objective of this study was to find out individual and social factors affecting environmental behavior of urban citizens. To achieve this objective a conceptual framework derived out f...

  18. An Investigation into EFL Instructors’ Attitudes towards Using Instructional Technology in Language Classes: A Case Study

    OpenAIRE

    O. Derakhshan; A. Tahriri; Z. Azim Dokht

    2013-01-01

    The present study aimed at determining EFL instructors’ attitudes towards using technology in language classes. The participants of the study were 40 male and female EFL instructors at Guilan Province, Iran during the spring semester of 2010. The Technology Attitude Scale (TAS) was utilized to collect the relevant data. The TAS consists of twenty items with responses provided on a Likert scale. The participants were also asked to respond to three open-ended questions. Descriptive statistics w...

  19. RAM investigation of coal-fired thermal power plants: A case study

    Directory of Open Access Journals (Sweden)

    D. Bose

    2012-04-01

    Full Text Available Continuous generation of electricity of a power plant depends on the higher availability of its components/equipments. Higher availability of the components/equipments is inherently associated with their higher reliability and maintainability. This paper investigates the reliability, availability and maintainability (RAM characteristics of a 210 MW coal-fired thermal power plant (Unit-2 from a thermal power station in eastern region of India. Critical mechanical subsystems with respect to failure frequency, reliability and maintainability are identified for taking necessary measures for enhancing availability of the power plant and the results are compared with Unit-1 of the same Power Station. Reliability-based preventive maintenance intervals (PMIs at various reliability levels of the subsystems are estimated also for performing their preventive maintenance (PM. The present paper highlights that in the Unit-2, Economizer (ECO & Furnace Wall Tube (FWT exhibits lower reliability as compared to the other subsystems and Economizer (ECO & Baffle Wall Tube (BWT demands more improvement in maintainability. Further, it has been observed that FSH followed Decreasing Failure Rate (DFR and Economizer (ECO is the most critical subsystem for both the plants. RAM analysis is very much effective in finding critical subsystems and deciding their preventive maintenance program for improving availability of the power plant as well as the power supply.

  20. Mapping to Support Fine Scale Epidemiological Cholera Investigations: A Case Study of Spatial Video in Haiti.

    Science.gov (United States)

    Curtis, Andrew; Blackburn, Jason K; Smiley, Sarah L; Yen, Minmin; Camilli, Andrew; Alam, Meer Taifur; Ali, Afsar; Morris, J Glenn

    2016-02-03

    The cartographic challenge in many developing world environments suffering a high disease burden is a lack of granular environmental covariates suitable for modeling disease outcomes. As a result, epidemiological questions, such as how disease diffuses at intra urban scales are extremely difficult to answer. This paper presents a novel geospatial methodology, spatial video, which can be used to collect and map environmental covariates, while also supporting field epidemiology. An example of epidemic cholera in a coastal town of Haiti is used to illustrate the potential of this new method. Water risks from a 2012 spatial video collection are used to guide a 2014 survey, which concurrently included the collection of water samples, two of which resulted in positive lab results "of interest" (bacteriophage specific for clinical cholera strains) to the current cholera situation. By overlaying sample sites on 2012 water risk maps, a further fifteen proposed water sample locations are suggested. These resulted in a third spatial video survey and an additional "of interest" positive water sample. A potential spatial connection between the "of interest" water samples is suggested. The paper concludes with how spatial video can be an integral part of future fine-scale epidemiological investigations for different pathogens.

  1. Mapping to Support Fine Scale Epidemiological Cholera Investigations: A Case Study of Spatial Video in Haiti

    Directory of Open Access Journals (Sweden)

    Andrew Curtis

    2016-02-01

    Full Text Available The cartographic challenge in many developing world environments suffering a high disease burden is a lack of granular environmental covariates suitable for modeling disease outcomes. As a result, epidemiological questions, such as how disease diffuses at intra urban scales are extremely difficult to answer. This paper presents a novel geospatial methodology, spatial video, which can be used to collect and map environmental covariates, while also supporting field epidemiology. An example of epidemic cholera in a coastal town of Haiti is used to illustrate the potential of this new method. Water risks from a 2012 spatial video collection are used to guide a 2014 survey, which concurrently included the collection of water samples, two of which resulted in positive lab results “of interest” (bacteriophage specific for clinical cholera strains to the current cholera situation. By overlaying sample sites on 2012 water risk maps, a further fifteen proposed water sample locations are suggested. These resulted in a third spatial video survey and an additional “of interest” positive water sample. A potential spatial connection between the “of interest” water samples is suggested. The paper concludes with how spatial video can be an integral part of future fine-scale epidemiological investigations for different pathogens.

  2. Investigation of the intraseasonal oscillations over a Brazilian equatorial station: a case study

    Science.gov (United States)

    Guharay, Amitava; Batista, Paulo Prado; Clemesha, Barclay Robert; Sarkhel, Sumanta; Buriti, Ricardo Arlen

    2014-12-01

    Characteristics of the intraseasonal oscillations (ISO) in the mesosphere and lower thermosphere (MLT) are investigated using meteor radar wind observations from a South American, equatorial station, São João do Cariri (7.4°S, 36.5°W) during 2008. A prominent ISO signature is observed during January-May in the period band approximately 40 to 70 days in the MLT zonal wind. In the lower atmosphere, a dominant ISO is observed in the period band approximately 30 to 60 days in the outgoing longwave radiation (OLR) (a proxy for convection), total columnar water vapor (a proxy for tides), and zonal wind. Considerable high correlation of the ISO between the MLT and lower atmosphere indicates significant dynamical coupling between the lower and middle atmosphere during the observational period. The MLT-ISO shows conspicuous downward propagation of the peak amplitude indicating the role of the dissipating upward propagating waves for its generation. The amplitudes in the zonal wind of the dominant tidal components in the MLT exhibit conspicuous ISO modulation. The eastward propagating waves and tides are surmised to be responsible for communicating the ISO signature from the lower atmosphere to the MLT. The origin of the MLT-ISO is believed to take place in the lower troposphere, below 4 km. The MLT-ISO is believed to be the imprint of the lower atmospheric Madden-Julian oscillation which travels eastward from the Indian Ocean-western Pacific Ocean to the present location.

  3. An investigation of gait in children with Attention Deficit Hyperactivity Disorder: a case controlled study.

    Science.gov (United States)

    Papadopoulos, Nicole; McGinley, Jennifer L; Bradshaw, John L; Rinehart, Nicole J

    2014-08-30

    This study aimed to compare the gait of children with ADHD - Combined Type (ADHD-CT) to typically developing (TD) children. Children with ADHD-CT (n=14; mean age 10 years 4 months) and a TD group (n=13; mean age 10 years 9 months) walked at self-selected slow, preferred and fast speed on an electronic walkway system. Participants completed a total of 15 walking trials; 5 trials per walking condition. Groups were matched on age, intellectual functioning, height and weight. In the preferred walking condition, there was no difference in spatio-temporal gait variables between the ADHD-CT and TD control groups. At self-selected fast speed, children with ADHD-CT were faster and walked with a higher cadence. The subtle alterations in gait pattern that may reflect a timing deficit is consistent with previous ADHD motor studies. In addition, this study extends previous studies in characterising the unique gait profile of non-medicated children with ADHD-CT where a diagnosis of autism spectrum disorder has been ruled out.

  4. Investigating Personality in Stuttering: Results of a Case Control Study Using the NEO-FFI

    Science.gov (United States)

    Bleek, Benjamin; Montag, Christian; Faber, Jennifer; Reuter, Martin

    2011-01-01

    A recent study by Iverach et al. ("Journal of Communication Disorders," 2010) compared persons who stutter with two normative samples in the context of the five-factor model of personality measured by the NEO Five-Factor Inventory (NEO-FFI). Persons who stutter were characterized by higher "Neuroticism," lower "Conscientiousness" and lower…

  5. Investigation on Spatial Patterns of Crime against Women Case Study: Street Offences in Zanjan

    Directory of Open Access Journals (Sweden)

    Jamal Mohammadi

    2012-12-01

    Full Text Available Presently, a major problem in Zanjan is the frequency of Social Anomies, and most specifically street offences against women. This undesirable phenomenon has most seriously jeopardized the citizen’s health and life to the extent that it has become a concern of police and judicial authorities. The purpose of this study is to analyze the judicial structure of these anomies in the city of Zanjan and to identify spatial patterns and facilitating factors for this crime to be committed, in order to fight and control the areas that are inflicted with such crimes, using statistical models and geographical data organization. This study utilizes a comparative analytical method. To identify and recognize spatial patterns of offences in the city, graphics-based and statistical models have been used in Geographic Information System (GIS environment. Mean center test and standard deviation ellipse include the most important statistical tests used in this study. To identify the crime spots, the closest neighborhood indicator has been used as the test of clustering. This study benefits from statistical tests as well as graphics-based statistical methods, including Kernel Density Estimation. The statistical population of this study includes total street offences that have occurred in the city of Zanjan within one year. The findings of this study reveal that the spatial distribution of street offences against women in the city of Zanjan follows a centralized and clustered pattern. Also, the mean center of this crime is mainly located at geographic center of the city and the central district. According to the findings of this study, Zanjan is the third city where the occurrence of street offences is most highly frequent, with a rate of 14.78%. The most significant area include Enghelab Intersection, Sadi Intersection, Zeynabiyeh St., Taleghani St., Arg Sq., Haft-e-Tir Terminal, and most specifically the central part of Zanjan. To improve the security and to

  6. INVESTIGATION OF THE GROUNDWATER SUITABILITY FOR IRRIGATION PRACTICES IN AN ARID REGION: CASE STUDY

    Directory of Open Access Journals (Sweden)

    Ahmed Murad

    2014-01-01

    Full Text Available Groundwater is an important source of acceptable water for irrigation in the arid regions and in particular in the United Arab Emirates (UAE. Demand for groundwater is increasing in the UAE due to population growth and significant economic advancement associated with political stability. As agricultural practices are the main land use in Al Hayer area, southeast UAE, majority of extracted groundwater from major aquifer is used to meet the increasing demands of irrigation. This study is aimed to assess the suitability of groundwater in the study area for irrigation practices using classifications of Sodium Adsorption Ratio (SAR, Soluble Sodium Percentage (SSP, Magnesium Adsorption Ratio (MAR as magnesium hazard and Residual Sodium Carbonate (RSC. In addition to that, the quality is assessed using the Total Dissolved Solids (TDS and Electrical Conductivity (EC of collected groundwater samples. Assessing the quality of groundwater in the region will help the decision makers in determining appropriate actions and using the conventional management tools to protect groundwater from the possible contamination. The chemical results indicate that the groundwater of the study area contains excess of Na+ and Mg+2. This is related to the weathering of Oman Mountains which are located to the east of the study area. The data analyses of salinity hazard suggested that about 44% of collected groundwater samples from the entire region are grouped as very high salinity and are not suitable for irrigation and about 56% are grouped as high salinity which is doubtful to be used for irrigation. The calculations of SAR reveal that the groundwater of the study area is good to excellent for crop production. While, the calculated magnesium hazard suggests that all samples are not suitable for irrigation purposes. The SAR-EC plot presents two groups of sampling points. The first group of groundwater can be used for irrigation of most crops in almost all soils, however

  7. INVESTIGATION OF THE GROUNDWATER SUITABILITY FOR IRRIGATION PRACTICES IN AN ARID REGION: CASE STUDY

    OpenAIRE

    Ahmed Murad

    2014-01-01

    Groundwater is an important source of acceptable water for irrigation in the arid regions and in particular in the United Arab Emirates (UAE). Demand for groundwater is increasing in the UAE due to population growth and significant economic advancement associated with political stability. As agricultural practices are the main land use in Al Hayer area, southeast UAE, majority of extracted groundwater from major aquifer is used to meet the increasing demands of irrigation. This study is aimed...

  8. Investigating the perceptions of a Flipped Classroom: A case study of an MA (TESOL) module

    OpenAIRE

    Mohammed, Nechir

    2014-01-01

    bstract Technological developments allowed lecturers to be moved outside the classroom. Classroom Flipping is one of the those example where the content of the lecture is viewed by the students outside of the classroom by using technology and freeing class time to practice or apply the material prepared by the students via interactive activities. This study surveys the perceptions of a flipped module in an MA TESOL programme in a British University. To do this, ...

  9. Investigating Students’ Perceptions On Feedback In Distance Education Program: A Case Study In Turkey

    OpenAIRE

    ŞEKER, Dr. Meral; SEZGİN, Yrd.Doç.Dr.M. Emre

    2013-01-01

    Feedback in distance education plays a crucial role as it gives one of the few opportunities for teacher student interaction Since the effectiveness of distance education can be improved by enhancing the quality of feedback which significantly affects students’ subsequent learning teachers need to acknowledge the importance of students’ involvement and place room for their needs and expectations in formulating their feedback Hyland 2010 Jara Mellar 2010 In this respect the study att...

  10. Investigating effective factors on improvement and development of medicinal Pants in Iran (case study Isfahan city

    Directory of Open Access Journals (Sweden)

    Seyed Fathollah Amiri Aghdaie

    2014-07-01

    Full Text Available Using plants has a long history in treatment. Herbal medicine has always been one of the main pillars of the famous medical school in ancient civilization. Nowadays also, a high Volume of trade in the world is belongs to medicinal because of its current importance. However a very few studies have been performed in the field of medicinal plants marketing In this study we have tried to determine the factors that can help to improve and develop The market of medicinal plants in Iran. The paper is descriptive-cognition and the related Information for this scope have been collected by using library resources such as books And scientific journals, moreover for collecting necessary data in order to confirm or reject Research hypothesis a questionnaire made by researchers have been used, data analyzed with SPSS software and presumption statistical methods. Sample 57 consists of medicinal plants sellers(druggist, pharmacists and doctors choose with random sampling. The result showed that all the variables factors of the study can help to improve and expand medicinal market.

  11. An investigation on effective factors influencing employee performance: A case study

    Directory of Open Access Journals (Sweden)

    Hamid Reza Alavi

    2013-06-01

    Full Text Available Human resources are considered as one of the key components of any organization to reach its objectives. Human resources help organization performance doing organizational duties and making employees’ improvement. Because of this, employee performance appraisal has changed to one of the most important issues for top managers. Performance appraisal is necessary to select useful strategies for increasing productivity of human resource management along with productivity of employee to get strategic targets. In this study, we extract effective factors on increasing of employee performance and subsequently, present some suggestions to managers of academic organizations. The study was performed on some employees who worked for Islamic Azad University in 2013. Cronbach alpha was equal to 99.4% for employee performance appraisal, which confirmed the overall survey. To recognize key factors we used path analysis technique too. The results of the study revealed that in this school, employee performance in practical field was higher than expected, but in terms of operational and behavioral fields, they were in the middle stage.

  12. Investigation of the geochemical evolution of groundwater under agricultural land: A case study in northeastern Mexico

    Science.gov (United States)

    Ledesma-Ruiz, Rogelio; Pastén-Zapata, Ernesto; Parra, Roberto; Harter, Thomas; Mahlknecht, Jürgen

    2015-02-01

    Zona Citrícola is an important area for Mexico due to its citriculture activity. Situated in a sub-humid to humid climate adjacent to the Sierra Madre Oriental, this valley hosts an aquifer system that represents sequences of shales, marls, conglomerates, and alluvial deposits. Groundwater flows from mountainous recharge areas to the basin-fill deposits and provides base flows to supply drinking water to the adjacent metropolitan area of Monterrey. Recent studies examining the groundwater quality of the study area urge the mitigation of groundwater pollution. The objective of this study was to characterize the physical and chemical properties of the groundwater and to assess the processes controlling the groundwater's chemistry. Correlation was used to identify associations among various geochemical constituents. Factor analysis was applied to identify the water's chemical characteristics that were responsible for generating most of the variability within the dataset. Hierarchical cluster analysis was employed in combination with a post-hoc analysis of variance to partition the water samples into hydrochemical water groups: recharge waters (Ca-HCO3), transition zone waters (Ca-HCO3-SO4 to Ca-SO4-HCO3) and discharge waters (Ca-SO4). Inverse geochemical models of these groups were developed and constrained using PHREEQC to elucidate the chemical reactions controlling the water's chemistry between an initial (recharge) and final water. The primary reactions contributing to salinity were the following: (1) water-rock interactions, including the weathering of evaporitic rocks and dedolomitization; (2) dissolution of soil gas carbon dioxide; and (3) input from animal/human wastewater and manure in combination with by denitrification processes. Contributions from silicate weathering to salinity ranged from less important to insignificant. The findings suggest that it may not be cost-effective to regulate manure application to mitigate groundwater pollution.

  13. Investigating effective factors on multimedia advertising: A case study of travel agencies ,

    Directory of Open Access Journals (Sweden)

    Naser Azad

    2012-01-01

    Full Text Available Advertisement plays an important role on increasing sales and organizations normally spend significant amount of cost in an attempt to increase profitability. A productive advertisement normally involves various factors and we need to determine the most important ones, very carefully. In this paper, we use a questionnaire-based survey to find the most important factors influencing advertisement. In this paper, we focus on gathering information from the advertisement providers to assess each advertisement plan. The proposed study of this paper uses factor analysis to determine 15 most important factors, which include 42 variables.

  14. INVESTIGATING THE DYNAMICS OF AN INVENTORY SYSTEM IN THE MANUFACTURING SECTOR: A CASE STUDY

    Directory of Open Access Journals (Sweden)

    M.K.O. Ayomoh

    2012-01-01

    Full Text Available

    ENGLISH ABSTRACT: Research on inventory systems has steadily increased over the past several decades as professionals seek to optimise the limited resources associated with inventory management. Recently, an international automobile windscreen manufacturing plant in Nigeria that is facing intense international competition has sought to improve its operational efficiency and profitability. The management has considered system reengineering as a viable option. Hence, all the functional units in the organisation have to be transformed. This has stimulated the present study on inventory. The study proposes a classic industrial engineering methodology in quantifying the balance between holding too much and too little inventory. In particular, industrial dynamics is used as a method of analysis. Improved cost figures are reported on the existing system.

    AFRIKAANSE OPSOMMING: Gedurende die afgelope dekades was daar 'n toename in navorsing oor die optimisering van beperkte bronne vir voorraadsisteme. Onlangs het 'n Nigeriese internasionale windskermvervaardiger gepoog om die doeltreffendheid en winsgewendheid van hulle onderneming te verhoog teen 'n agtergrond van intense internasionale mededinging. Om dit te bereik, het die onderneming besluit om te herorganiseer en al die funksionele produksie-eenhede te transformeer. Sodoende is die voorraadvraagstuk ook onder die loep geneem. Die navorsing het gevolglik voorraadhou en -tekortekoste bestudeer as 'n dinamiese verskynsel. Hiervoor is betroubare praktykgegewens en die welbekende Industriedinamika gebruik as die ontledingsmetode. Die navorsing het verbeterde kosteresultate bewerkstellig.

  15. INVESTIGATION OF GEOTECHNICAL SPECIFICATIONS OF SAND DUNE SOIL: A CASE STUDY AROUND BAIJI IN IRAQ

    Directory of Open Access Journals (Sweden)

    Abbas J. Al-Taie

    2013-11-01

    Full Text Available ABSTRACT: While more than half the land surface of Iraq consists of deserts covered mainly with sand dunes, little research has taken place to study the characteristics and the behavior of dune soils. This paper directed toward studying the geotechnical properties of dune sands taken from Baiji city (northwest of Iraq. A vast laboratory testing program was carried out to achieve the purpose of this paper. The physical tests, chemical tests, X-ray diffraction analysis, permeability test, compaction characteristics, compressibility and collapsibility tests; and shear strength tests were included in this program. The results indicate that soil of Baiji sand dune exhibits prefer engineering properties according to their state. As such, this soil is considered suitable for use in geotechnical constructions. ABSTRAK: Walaupun lebih separuh daripada bumi Iraq terdiri daripada gurun yang dipenuhi dengan bukit-bukit pasir, tidak banyak penyelidikan dijalankan untuk mengkaji sifat-sifat dan ciri-ciri tanah pasir  tersebut. Kertas kerja ini menyelidik sifat geoteknikal bukit pasir yang diambil dari pekan Baiji (di bahagian barat utara Iraq.  Program penyelidikan makmal yang menyeluruh telah  dijalankan bagi mencapai objektif kajian ini. Ujian fizikal, ujian kimia, analisis belauan sinar-x, ujian kebolehtelapan, ciri pemadatan, faktor ketermampatan, ujian keruntuhan dan ujian kekuatan ricih diambilkira dalam program ini. Keputusan menunjukkan bahawa tanih bukit pasir Baiji mengutamakan ciri kejuruteraan berdasarkan keadaannya. Oleh itu, tanah ini dianggap sesuai untuk kegunaan pembinaan geoteknikal.

  16. An investigation on implementation of clinical governance: A case study of an Iranian hospital

    Directory of Open Access Journals (Sweden)

    Elahe Parsaamal

    2013-10-01

    Full Text Available Clinical Governance (CG generally aims to enhance the quality of clinical services, increases the accountability of those who are responsible for health affairs. This study examines the quality of presenting medical services in Dr. Shariati hospital in Tehran after executing the CG project. To attain the aforesaid goal, this research also surveys the implementation rate of CG in Dr. Shariati hospital based on the CG seven-pillar model. The study is a descriptive and cross-sectional research fulfilled in summer 2013. Statistical population contains the employees of Dr. Shariati hospital in Tehran and the research sample includes 80 people of the mentioned population who were selected, randomly. Data was gathered through a questionnaire and the experts confirmed its validity and the reliability was approved via Cronbach's alpha of 0.947 and then, the analysis was carried out by the SPSS software and T-test. The findings for each CG pillar in Dr. Shariati hospital have placed less than the medium amount and they are not in desirable level. The CG at the above-mentioned hospital places in a medium rank so that the efforts by the managers will create successful changes at the hospital; meanwhile, the managers will be able to utilize the CG method in systematic prediction of changeable priorities to present the best strategies for achievable performance of managerial techniques and processes.

  17. An Investigation on Borojerd as a Vulnerable Area against Earthquake, a Case Study of Borojerd Houses

    Directory of Open Access Journals (Sweden)

    Seyed Jalalaldin Faraji

    2014-12-01

    Full Text Available - Iran is one of the countries which is always struck by quake and its location on HimalayanAlpine belt has enhanced this condition such that in the previous century it has experienced more than 130 quakes with magnitude 7.5 in Richter scale. This phenomenon is not destructive in itself but lack of structures’ tolerance against forces caused by quake devastates and ruins them for different reasons. Iran is one of the ten natural disaster-prone countries and it is known as the sixth earthquake stricken country which causes high death toll. Based on this, urban security has great importance in this land. In this regard, this study has used a survey and analytical method based on qualitative and quantitative characteristics of Borojerd houses with the aim of identifying the amount of vulnerability using national statistics and random sampling. The results of this study indicated that seismic risk is high in Borojerd and confirmed low level of material resistance and high density of families in houses and lack of facilities and important services like hospitals, fire-fighting and rescue centers in critical situation.

  18. Investigation of Noises in GPS Time Series: Case Study on Epn Weekly Solutions

    Science.gov (United States)

    Klos, Anna; Bogusz, Janusz; Figurski, Mariusz; Kosek, Wieslaw; Gruszczynski, Maciej

    2014-05-01

    The noises in GPS time series are stated to be described the best by the combination of white (Gaussian) and power-law processes. They are mainly the effect of mismodelled satellite orbits, Earth orientation parameters, atmospheric effects, antennae phase centre effects, or of monument instability. Due to the fact, that velocities of permanent stations define the kinematic reference frame, they have to fulfil the requirement of being stable at 0.1 mm/yr. The previously performed researches showed, that the wrong assumption of noise model leads to the underestimation of velocities and their uncertainties from 2 up to even 11, especially in the Up direction. This presentation focuses on more than 200 EPN (EUREF Permanent Network) stations from the area of Europe with various monument types (concrete pillars, buildings, metal masts, with or without domes, placed on the ground or on the rock) and coordinates of weekly changes (GPS weeks 0834-1459). The topocentric components (North, East, Up) in ITRF2005 which come from the EPN Re-Processing made by the Military University of Technology Local Analysis Centre (MUT LAC) were processed with Maximum Likelihood Estimation (MLE) using CATS software. We have assumed the existence of few combinations of noise models (these are: white, flicker and random walk noise with integer spectral indices and power-law noise models with fractional spectral indices) and investigated which of them EPN weekly time series are likely to follow. The results show, that noises in GPS time series are described the best by the combination of white and flicker noise model. It is strictly related to the so-called common mode error (CME) that is spatially correlated error being one of the dominant error source in GPS solutions. We have assumed CME as spatially uniform, what was a good approximation for stations located hundreds of kilometres one to another. Its removal with spatial filtering reduces the amplitudes of white and flicker noise by a

  19. Investigating reduction of dimensionality during single-joint elbow movements: a case study on muscle synergies

    Directory of Open Access Journals (Sweden)

    Enrico eChiovetto

    2013-02-01

    Full Text Available A long standing hypothesis in the neuroscience community is that the CNS generates the muscle activities to accomplish movements by combining a relatively small number of stereotyped patterns of muscle activations, often referred to as muscle synergies. Different definitions of synergies have been given in the literature. The most well-known are those of synchronous, time-varying and temporal muscle synergies. Each one of them is based on a different mathematical model used to factor some EMG array recordings collected during the execution of variety of motor tasks into a well-determined spatial, temporal or spatio-temporal organization. This plurality of definitions and their separate application to complex tasks have so far complicated the comparison and interpretation of the results obtained across studies, and it has always remained unclear why and when one synergistic decomposition should be preferred to another one. By using well-understood motor tasks such as elbow flexions and extensions, we aimed in this study to clarify better what are the motor features characterized by each kind of decomposition and to assess whether, when and why one of them should be preferred to the others. We found that three temporal synergies, each one of them accounting for specific temporal phases of the movements could account for the majority of the data variation. Similar performances could be achieved by two synchronous synergies, encoding the agonist-antagonist nature of the two muscles considered, and by two time-varying muscle synergies, encoding each one a task-related feature of the elbow movements, specifically their direction. Our findings support the notion that each EMG decomposition provides a set of well-interpretable muscle synergies, identifying reduction of dimensionality in different aspects of the movements. Taken together, our findings suggest that all decompositions are not equivalent and may imply different neurophysiological substrates

  20. Geoelectrical investigation for the assessment of groundwater conditions: a case study

    Directory of Open Access Journals (Sweden)

    M. Nakhaei

    2005-06-01

    Full Text Available An electrical resistivity survey involving Vertical Electrical Soundings (VES was carried out in the Shooro Basin in Southeast Iran in order to study groundwater conditions such as depth, thickness and aquifer boundaries. Vertical electrical soundings by Schlumberger array were conducted in this area. The resistivity Schlumberger soundings which have a maximum current electrode spacing (AB ranging from 200 m to 600 m were carried out at 207 positions in 19 profiles. Interpretation of these soundings indicates the presence of an alluvial aquifer. This aquifer is divided into eastern and western parts by the Shooro River, which comprises a variable thickness and resistivity of deposits. The average permeability coefficient and resistivity in the western part, especially southwest is higher than the eastern part of the aquifer. Therefore, it seems that Shooro River follows a fault zone in the region. The high resistivity of west part is due to the water quality and the existence of alluvial fan with coarse grain materials. Low aquifer resistivities in the east are associated with finer materials and also brackish water infiltration from the adjacent basin mainly in the central part of the aquifer. Furthermore, zones with high yield potential have been determined in this research based on the resistivity data.

  1. Investigation of KIF6 Trp719Arg in a case-control study of myocardial infarction: a Costa Rican population.

    Directory of Open Access Journals (Sweden)

    Lance A Bare

    Full Text Available BACKGROUND AND METHODOLOGY: The 719Arg allele of KIF6 (rs20455 was associated with coronary events in Caucasian participants of five prospective studies. We investigated whether this KIF6 variant was associated with non-fatal myocardial infarction (MI in a case-control study of an admixed population from the Central Valley of Costa Rica. Genotypes of the KIF6 variant were determined for 4,134 men and women. Cases (1,987 had survived a first MI; controls (2,147 had no history of MI and were matched to cases by age, sex, and area of residence. We tested the association between the KIF6 719Arg allele and non-fatal MI by conditional logistic regression and adjusted for admixture of founder populations. PRINCIPAL FINDINGS: Compared with the reference Trp/Trp homozygotes, KIF6 719Arg carriers were not at significantly higher risk for non-fatal MI in this study after adjustment for traditional risk factors or admixture (OR= 1.12; 95%CI, 0.98-1.28. Heterozygotes of the KIF6 Trp719Arg variant were at increased risk of non-fatal MI: the adjusted odds ratio was 1.16 (95% confidence interval, 1.01-1.34, but this association would not be significant after a multiple testing correction. CONCLUSIONS/SIGNIFICANCE: We found that carriers of the KIF6 719Arg allele were not at increased risk of non-fatal MI in a case-control study of Costa Ricans living in the Central Valley of Costa Rica.

  2. Cirrus crystal fall velocity estimates using the Match method with ground-based lidars: first investigation through a case study

    Directory of Open Access Journals (Sweden)

    D. Dionisi

    2013-02-01

    Full Text Available Cirrus ice particle sedimentation velocity (vs is one of the critical variables for the parameterization of cirrus properties in a global climate model (GCM. In this study a methodology to estimate cirrus properties, such as crystal mean fall speed, through successive lidar measurements is evaluated. This "Match" technique has been applied on cirrus cloud observations and then tested with measurements from two ground-based lidars located in the Mediterranean area. These systems, with similar instrumental characteristics, are installed at the Observatory of Haute Provence (OHP, 43.9° N, 5.7° E in France and at Rome Tor Vergata (RTV, 41.8° N, 12.6° E in Italy. At a distance of approximately 600 km, the two lidar stations have provided systematic measurements for several years and are along a typical direction of an air path. A test case of an upper tropospheric cirrus, observed over both sites during the night between 13 and 14 March 2008, has been selected and the feasibility of the Match-cirrus approach investigated through this case. The analysis through lidar principal parameters (vertical location, geometrical thickness and optical depth reveals a case of a thin sub-visible cirrus (SVC located around the tropopause. A first range of values for vs (1.4–1.9 cm s−1, consistent with simple-shaped small crystals has been retrieved with a simplified approach (adiabatic transport and "frozen" microphysical conditions inside the cirrus. The backward trajectory analysis suggests a type of cirrus formed by large-scale transport processes (adiabatic cooling of moist air masses coming from the subtropical area around Mexico gulf, which is characterized by a long atmospheric lifetime and horizontal extension of several hundred km. The analysis of this case study reveals that many uncertainties reduce the confidence of the retrieved estimates of the crystal fall velocity. However, this paper allows for

  3. Circulating C-Reactive Protein Concentrations and Risks of Colon and Rectal Cancer : A Nested Case-Control Study Within the European Prospective Investigation into Cancer and Nutrition

    NARCIS (Netherlands)

    Aleksandrova, Krasimira; Jenab, Mazda; Boeing, Heiner; Jansen, Eugene; Bueno-de-Mesquita, H. Bas; Rinaldi, Sabina; Riboli, Elio; Overvad, Kim; Dahm, Christina C.; Olsen, Anja; Tjonneland, Anne; Boutron-Ruault, Marie-Christine; Clavel-Chapelon, Francoise; Morois, Sophie; Palli, Domenico; Krogh, Vittorio; Tumino, Rosario; Vineis, Paolo; Panico, Salvatore; Kaaks, Rudolf; Rohrmann, Sabine; Trichopoulou, Antonia; Lagiou, Pagona; Trichopoulos, Dimitrios; van Duijnhoven, Fraenzel J. B.; Leufkens, Anke M.; Peeters, Petra H.; Rodriguez, Laudina; Bonet, Catalina; Sanchez, Maria-Jose; Dorronsoro, Miren; Navarro, Carmen; Barricarte, Aurelio; Palmqvist, Richard; Hallmans, Goran; Khaw, Kay-Tee; Wareham, Nicholas; Allen, Naomi E.; Spencer, Elizabeth; Romaguera, Dora; Norat, Teresa; Pischon, Tobias

    2010-01-01

    The authors investigated associations between serum C-reactive protein (CRP) concentrations and colon and rectal cancer risk in a nested case-control study within the European Prospective Investigation into Cancer and Nutrition (1992-2003) among 1,096 incident cases and 1,096 controls selected using

  4. Renovation of NZCB in a poor solar irradiation zone: An investigative case study of residential buildings in Chongqing urban areas

    Directory of Open Access Journals (Sweden)

    Md Sahadat Hossain, Baizhan Li

    2016-01-01

    Full Text Available The energy requirements of Chongqing, a major economic hub of Southwest China, have increased annually with at an average of 10.49% per annum since 1997. The predominant primary source of energy is coal. China’s long range goal is for a green economy and solar energy is considered a prime renewable energy source. This investigation assessed the feasibility of solar energy utilization in existing residential buildings in Chongqing Urban Areas. The main objectives of the research were to see “available solar renewable energy resource for utilization” and “how much CO2 emission could be abated by using solar energy from these residential buildings”. On the basis of average 3.47 kWhm-2d-1 and per capita 20.46m2 residential areas in 2012, the feasibility study found the availability of 1250 kWhm-²d-1 irradiation. In addition, 15% yielding from this availability had the potential of 2.88 MWh annual clean energy generations abating 89.6% of CO2 emissions from current electricity consumption. The investigative case study in three residential buildings of the Shapingba district of Chongqing found the 0.089, 0.086 and 0.126 tce of CO2 emissions for per capita 187.89 kWh, 182.23 kWh and 265.37 kWh monthly energy demand. Although the long cash pay back periods (46, 43 and 31 years don’t suggest immediate strong PV utilization in this area this form of renewable energy in Chongqing could form a distinctive substitute as a flanking measure for zero carbon residential buildings.

  5. Investigating the Relationship among Test Anxiety, Gender, Academic Achievement and Years of Study: A Case of Iranian EFL University Students

    Science.gov (United States)

    Rezazadeh, Mohsen; Tavakoli, Mansoor

    2009-01-01

    The construct of anxiety plays a major role in one's life. One of these anxieties is test anxiety or apprehension over academic evaluation. The present study was designed to investigate the relationship between gender, academic achievement, years of study and levels of test anxiety. This investigation is a descriptive analytic study and was done…

  6. An Extended Case Study Methoology for Investigating Influence of Cultural, Organizational, and Automation Factors on Human-Automation Trust

    Science.gov (United States)

    Koltai, Kolina Sun; Ho, Nhut; Masequesmay, Gina; Niedober, David; Skoog, Mark; Johnson, Walter; Cacanindin, Artemio

    2014-01-01

    This paper discusses a case study that examined the influence of cultural, organizational and automation capability upon human trust in, and reliance on, automation. In particular, this paper focuses on the design and application of an extended case study methodology, and on the foundational lessons revealed by it. Experimental test pilots involved in the research and development of the US Air Forces newly developed Automatic Ground Collision Avoidance System served as the context for this examination. An eclectic, multi-pronged approach was designed to conduct this case study, and proved effective in addressing the challenges associated with the cases politically sensitive and military environment. Key results indicate that the system design was in alignment with pilot culture and organizational mission, indicating the potential for appropriate trust development in operational pilots. These include the low-vulnerabilityhigh risk nature of the pilot profession, automation transparency and suspicion, system reputation, and the setup of and communications among organizations involved in the system development.

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

    Science.gov (United States)

    Lloyd, David; Dykes, Jason

    2011-12-01

    Working with three domain specialists we investigate human-centered approaches to geovisualization following an ISO13407 taxonomy covering context of use, requirements and early stages of design. Our case study, undertaken over three years, draws attention to repeating trends: that generic approaches fail to elicit adequate requirements for geovis application design; that the use of real data is key to understanding needs and possibilities; that trust and knowledge must be built and developed with collaborators. These processes take time but modified human-centred approaches can be effective. A scenario developed through contextual inquiry but supplemented with domain data and graphics is useful to geovis designers. Wireframe, paper and digital prototypes enable successful communication between specialist and geovis domains when incorporating real and interesting data, prompting exploratory behaviour and eliciting previously unconsidered requirements. Paper prototypes are particularly successful at eliciting suggestions, especially for novel visualization. Enabling specialists to explore their data freely with a digital prototype is as effective as using a structured task protocol and is easier to administer. Autoethnography has potential for framing the design process. We conclude that a common understanding of context of use, domain data and visualization possibilities are essential to successful geovis design and develop as this progresses. HC approaches can make a significant contribution here. However, modified approaches, applied with flexibility, are most promising. We advise early, collaborative engagement with data – through simple, transient visual artefacts supported by data sketches and existing designs – before moving to successively more sophisticated data wireframes and data prototypes. PMID:22034371

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

    Science.gov (United States)

    Lloyd, David; Dykes, Jason

    2011-12-01

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

  9. Study Design for a Case Control Investigation of Cellular Telephones and Other Risk Factors for Brain Tumors in Adults

    Energy Technology Data Exchange (ETDEWEB)

    Inskip, P.D.; Hatch, E.E.; Stewart, P.A.; Heineman, E.F.; Ziegler, R.G.; Dosemeci, M.; Parry, D.; Rothman, N.; Boice, J.D. Jr.; Wilcosky, T.C.; Watson, D.J.; Shapiro, W.R.; Selker, R.G.; Fine, H.A.; Black, P. McL.; Loeffler, J.S.; Linet, M.S

    1999-07-01

    The aetiology of brain tumours is poorly understood. Due, in part, to public concern about a postulated relationship between the use of cellular telephones or other increasingly prevalent environmental exposures and the incidence of brain cancer in adults, the National Cancer Institute is collaborating with three US hospitals in a comprehensive case control study of malignant and benign brain tumours. Factors under consideration include use of cellular phones and other wireless communication devices, workplace exposures to chemical agents and electromagnetic fields, dietary factors, family history of tumours, genetic determinants of susceptibility, home appliance use, reproductive history and hormonal exposures, viruses, medical and dental exposure to ionising radiation, and other aspects of medical history. Approximately 800 newly diagnosed brain tumour cases and 800 controls were enrolled at hospitals in Boston, Phoenix and Pittsburgh from 1994 to 1998. Cases include all adults (age {>=} 18 y) newly diagnosed with a histologically confirmed intracranial glioma, histologically confirmed intracranial meningioma or acoustic neuroma. Controls are patients admitted to the same hospitals as the cases, and treated for any of a variety of non-malignant conditions. Key features of the study include its large size, the emphasis on rapid ascertainment of incident cases and interview of study subjects rather than surrogate respondents, the use of detailed, job-specific questions developed by industrial hygienists to ascertain occupational exposures, and the storage of blood samples for future evaluation of inherited susceptibility, biomarkers of exposure and gene environment interactions. (author)

  10. Using of the Boolean Stochastic Generation method to target field investigations: the Mortisa landslide (eastern Italian Alps) case study

    Science.gov (United States)

    Bossi, Giulia; Marcato, Gianluca; Gottardi, Guido; Borgatti, Lisa

    2016-04-01

    When designing the geotechnical model of a landslide the information to define the soil profile within the slope is usually inferred from a small amount of data. This is particularly true for large landslides where the study area is vast and the variability of terrains is high. In this framework, a method allowing the best locations for further field investigation campaigns to be identified would be extremely useful. The Boolean Stochastic Generation method (BoSG), which randomly generates different soil distributions of two definite soil types in both 2D and 3D models, is a newly developed algorithm that can guide in this process. In this work the method has been applied to the Mortisa landslide case study, which is located in the Cortina d'Ampezzo valley (Veneto, Italy), part of the Dolomites UNESCO World Heritage list. The mudslide is 3.5 km long, stretching from 1750 to 1300 m a.s.l., and is located in a highly antrophized area where is damaging some buildings and a national road with its almost continuous movements. In fact, from year 2008, GNSS surveys recorded rates of displacements reaching 1.2 m/year in the most active parts of the landslide; the movements occur on a slip surfaces are located between 20 and 50 m below the surface. From the borecores some wooden samples were extracted allowing to reconstruct the sequence of events that led to the development of the present-day Mortisa slope. Interdigitated layers of gravel in a silty clay matrix originated from subsequent earth and debris flows events since the Lateglacial compose the landslide body, a condition that is particularly apt to be investigated with BoSG. A BoSG run for the Mortisa landslide was performed calculating 1200 soil configurations and using laboratory test parameters for the silty-clay matrix. The results were stacked in a tridimensional matrix in order to calculate the mean and the standard deviation (SD) of displacements for each element of the model mesh. In this way maps of the SD

  11. A case study investigation into the potential use of digital media in the promotion of healthy eating amongst youthreach learners.

    OpenAIRE

    Rodden, Breda

    2010-01-01

    non-peer-reviewed This case study examines the challenges associated with the use of Digital Media in the area of Food and Nutrition amongst Youthreach learners. The Irish government has made huge investments in the ICT infrastructure in schools and is currently doing the same in the area of health promotion. The purpose of this study is to look at the amalgamation of these two areas Interviews with Youthreach FETAC Level 3 Food and Nutrition teachers and the Youthreach l...

  12. High utility of contact investigation for latent and active tuberculosis case detection among the contacts: a retrospective cohort study in Tbilisi, Georgia, 2010-2011.

    Directory of Open Access Journals (Sweden)

    Tsira Chakhaia

    Full Text Available The study was conducted at the National Center for Tuberculosis and Lung Diseases (NCTBLD in Tbilisi, Georgia.To assess the utility of contact investigation for tuberculosis (TB case detection. We also assessed the prevalence and risk factors for active TB disease and latent TB infection (LTBI among contacts of active pulmonary TB cases.A retrospective cohort study was conducted among the contacts of active pulmonary TB cases registered in 2010-2011 at the NCTBLD in Tbilisi, Georgia. Contacts of active TB patients were investigated according to an "invitation model": they were referred to the NCTBLD by the index case; were queried about clinical symptoms suggestive of active TB disease; tuberculin skin testing and chest radiographs were performed. Demographic, laboratory, and clinical data of TB patients and their contacts were abstracted from existing records up to February 2013.869 contacts of 396 index cases were enrolled in the study; a median of 2 contacts were referred per index case. Among the 869 contacts, 47 (5.4% were found to have or developed active TB disease: 30 (63.8% were diagnosed with TB during the baseline period (co-prevalent cases and 17 (36.2% developed active TB disease during the follow-up period (mean follow up of 21 months (incident TB cases. The incidence rate of active TB disease among contacts was 1126.0 per 100,000 person years (95% CI 655.7-1802.0 per 100,000 person-years. Among the 402 contacts who had a tuberculin skin test (TST performed, 52.7% (95% CI 47.7-57.7% had LTBI.A high prevalence of LTBI and active TB disease was found among the contacts of TB cases in Tbilisi, Georgia. Our findings demonstrated that an "invitation" model of contact investigation was an effective method of case detection. Therefore, contact investigation should be scaled up in Georgia.

  13. Investigating the Status of Tablet Computers and E-Books Use of Open Education Faculty Students: A Case Study

    Science.gov (United States)

    Koçak, Ömer; Yildirim, Önder; Kursun, Engin; Yildirim, Gürkan

    2016-01-01

    The increase in tablet computers and e-books use brings to mind the question of how users benefited from these technologies. In this sense, the present study investigated the status of students' tablet computers and e-books use and the reasons why students prefer to use and not use of tablet computers and e-books. Students' study habits while…

  14. An Investigation into How Female Teachers Manage Stress and Teacher Burnout: A Case Study of West Akim Municipality of Ghana

    Science.gov (United States)

    Addison, Asonaba Kofi; Yankyera, George

    2015-01-01

    The purpose of this study was to investigate into how female teachers in Asamankese Circuit II in West Akim Municipality of Ghana Education Service manage stress and teacher burnout, and explore the causes, effects, and ways of improving work-related stress for better standard of education. The study was conducted with qualitative research…

  15. Comparative Investigation of River Water Quality by OWQI, NSFWQI and Wilcox Indexes (Case study: the Talar River – IRAN)

    OpenAIRE

    Darvishi Gholamreza; Kootenaei Farshad Golbabaei; Ramezani Maedeh; Lotfi Eissa; Asgharnia Hosseinali

    2016-01-01

    Rivers are considered as one of the main resources of water supply for various applications such as agricultural, drinking and industrial purposes. Also, these resources are used as a place for discharge of sewages, industrial wastewater and agricultural drainage. Regarding the fact that each river has a certain capacity for acceptance of pollutants, nowadays qualitative and environmental investigations of these resources are proposed. In this study, qualitative investigation of the Talar riv...

  16. Investigation corporate governance characteristics on risk taking: A case study of private banks listed in Tehran Stock Exchange

    OpenAIRE

    Mohammad Khodaei Valahzaghard; Heidar Shabanian Chaleshtori

    2013-01-01

    During the past few years, there have been tremendous works on detecting the relationship between banks performance and the number of seats on board of directors. Board of directors of banks is responsible for shareholders ownership’s interest. In this study, governance and ownership characteristics affecting risk appetite on some private banks listed in Tehran Stock Exchange is studied. The study investigates 12 private banks for a period 2005-2011 based on the implementation of some regress...

  17. An Investigation into the Effect of Internet Banking Service Quality on Customer Satisfaction (Case Study: Khorasan Razavi Saderat Bank)

    OpenAIRE

    PEZESHKIAN, Sadegh; SADEGHI, Tooraj

    2015-01-01

    Abstract. This study aimed to investigate the effect of internet banking service quality on customer satisfaction. The study population consisted of all users of internet banking services in Khorasan Razavi Saderat Bank. In the current study, three criteria of factor loading coefficients, Cronbach's alpha and composite reliability were used to ensure the reliability of the questionnaire and also convergent validity was applied to examine its validity. Also, to evaluate the relationship among ...

  18. Accurate molecular structure and spectroscopic properties for nucleobases: A combined computational - microwave investigation of 2-thiouracil as a case study

    Science.gov (United States)

    Puzzarini, Cristina; Biczysko, Malgorzata; Barone, Vincenzo; Peña, Isabel; Cabezas, Carlos; Alonso, José L.

    2015-01-01

    The computational composite scheme purposely set up for accurately describing the electronic structure and spectroscopic properties of small biomolecules has been applied to the first study of the rotational spectrum of 2-thiouracil. The experimental investigation was made possible thanks to the combination of the laser ablation technique with Fourier Transform Microwave spectrometers. The joint experimental – computational study allowed us to determine accurate molecular structure and spectroscopic properties for the title molecule, but more important, it demonstrates a reliable approach for the accurate investigation of isolated small biomolecules. PMID:24002739

  19. A case study investigation on the safe use of the internet by 12-18 year olds in an Irish post primary school.

    OpenAIRE

    Lawlor, Louise

    2011-01-01

    non-peer-reviewed This case study examines the nature of Internet use by students and teachers in a post primary school and attempts to determine to what extent students??? online activities reflect unsafe practices and patterns. It investigates how much students and teachers know about Internet safety and establishes from what source students have received information on safe Internet use to date. Finally, it investigates whether the study school is following recommended guidelineson I...

  20. Investigating Students' Perceived Satisfaction, Behavioral Intention, and Effectiveness of E-Learning: A Case Study of the Blackboard System

    Science.gov (United States)

    Liaw, S. S.

    2008-01-01

    Although the benefits of e-learning have been discussed in various previous studies; it is a critical issue of better understanding the reasons why some learners are dissatisfied with the e-learning experience. Therefore, this research investigates learners' satisfaction, behavioral intentions, and the effectiveness of the Blackboard e-learning…

  1. An Investigation of Teacher Questioning Strategies Usage in College Eng-lish Course-A Case Study on Honghe University

    Institute of Scientific and Technical Information of China (English)

    冯霞

    2015-01-01

    Teacher questioning strategy is one of popular teaching method in teaching practice. The teachers and students of college English course II was taken as investigate objects in this study. This study will focus on the problems of questioning frequency, questioning types, questioning strategies, waiting time and students’response to deeply study this situation. Through the data col⁃lection and analysis, the researcher hopes the study will deeply reveal the real situation of teacher questioning usage in Honghe University. Some referential suggestions will be offered to the college English teachers for their future teaching.

  2. 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.

  3. An investigation of impact of Brand Extension on Parent Brand Image: A case study of Johnson, UK

    OpenAIRE

    Muhammad Shakil Ahmad; Amer Rajput; Ehtesham ul Mujeeb; Hafiz Abid Hussain

    2011-01-01

    Purpose of study: The main purpose of this study is to investigate the impact of brand extensions on parent brand image. For this purpose Johnson is selected as parent brand for current study. The selected brand extensions are Johnson shampoo, Johnson’s isotonic drinks, Johnson’s sportswear and Johnson’s suntan lotion. Research Methodology: sample was selected from Bradford, UK. Sample consists of consumer of Johnson including males as well as female. Total sample size is 250 and data was c...

  4. Investigating the role of Social Wealth in the Renovation and refurbishment of old contextures (Case Study: Sardasht City

    Directory of Open Access Journals (Sweden)

    MN. Mousavi

    2013-01-01

    Full Text Available Extended abstract1-IntroductionOld contextures include restricted areas that are the subject of municipalities' certain activities due to space certain quality, social condition, immunity against accidents and the shortage of public services. The importance of social wealth in urban renewal process is more felt from this point of view and consequently the interference of old contextures are accomplished on the local position. Thus, on the one hand, social wealth can have a good show off with regard to the concept of local and due to the common interests and face to face relationships of the residents. On the other hand, considering the values like social confidence, social correlation and social integrity as internal capacities and hidden wealth in locals, it promises an uncentralized and bottom-up effort. This study intends to determine the social wealth of Sardasht and oldness of its old contexture and more importantly their relationships.2- Theoretical basesUrban renewal as a purely physical perspective, resulting from a lack of understanding of physical and spatial attractiveness of old context, is regarded as the only factor of their oldness in the majority of cases.While the extra-skeletal components like social structures of the contextures, i.e. the quality and quantity of relationships and the participation of the residents, could be a more desirable and acceptable tool and motive for the renewal. Considering the role of social wealth in the discussions relating to urban instauration, this policy believes in people participation in instauration process and in this regard, the social wealth of societies is considered as primary assets to reach to instauration goals. 3– DiscussionGerde Sour district (3 with 5786 population is the most populated local and the district No. 9 has the minimum population rate in the old contexture. The findings of the current status of Sardhasht old contexture show that about 60 % of the population of this

  5. An investigative study into the effectiveness of using computer-aided instruction (CAI) as a laboratory component of college-level biology: A case study

    Science.gov (United States)

    Barrett, Joan Beverly

    Community colleges serve the most diverse student populations in higher education. They consist of non-traditional, part-time, older, intermittent, and mobile students of different races, ethnic backgrounds, language preferences, physical and mental abilities, and learning style preferences. Students who are academically challenged may have diverse learning characteristics that are not compatible with the more traditional approaches to the delivery of instruction. With this need come new ways of solving the dilemma, such as Computer-aided Instruction (CAI). This case study investigated the use of CAI as a laboratory component of college-level biology in a small, rural community college setting. The intent was to begin to fill a void that seems to exist in the literature regarding the role of the faculty in the development and use of CAI. In particular, the investigator was seeking to understand the practice and its effectiveness, especially in helping the under prepared student. The case study approach was chosen to examine a specific phenomenon within a single institution. Ethnographic techniques, such as interviewing, documentary analysis, life's experiences, and participant observations were used to collect data about the phenomena being studied. Results showed that the faculty was primarily self-motivated and self-taught in their use of CAI as a teaching and learning tool. The importance of faculty leadership and collegiality was evident. Findings showed the faculty confident that expectations of helping students who have difficulties with mathematical concepts have been met and that CAI is becoming the most valuable of learning tools. In a traditional college classroom, or practice, time is the constant (semesters) and competence is the variable. In the CAI laboratory time became the variable and competence the constant. The use of CAI also eliminated hazardous chemicals that were routinely used in the more traditional lab. Outcomes showed that annual savings

  6. Examining the Transition to a Four-Day School Week and Investigating Post-Change Faculty/Staff Work-Life Balance: A Community College Case Study

    Science.gov (United States)

    Cardinale, Nelly

    2013-01-01

    This single descriptive embedded case study examined the process of implementing a four-day work/school week at a community college and investigated post-change faculty/staff work-life balance. All of the students attending this college live at home. The change was implemented due to state funding shortfalls, increasing college utility expenses…

  7. Learning How to Be a Research-Minded Teacher: Four Instrumental Music Education Students Investigate Good Music Teaching through Case Study Methodology

    Science.gov (United States)

    Sindberg, Laura K.

    2016-01-01

    Increasing evidence, both in general education and music education, points to the significance of inquiry as a part of teacher preparation. The purpose of this case study was to investigate the ways in which an introductory research project would help preservice music educators understand good "music teaching" and to discover the extent…

  8. Self-rated health and type 2 diabetes risk in the European Prospective Investigation into Cancer and Nutrition-InterAct study: a case-cohort study

    Science.gov (United States)

    Wennberg, Patrik; Rolandsson, Olov; van der A, Daphne L; Spijkerman, Annemieke M W; Kaaks, Rudolf; Boeing, Heiner; Feller, Silke; Bergmann, Manuela M; Langenberg, Claudia; Sharp, Stephen J; Forouhi, Nita; Riboli, Elio; Wareham, Nicholas

    2013-01-01

    Objectives To investigate the association between self-rated health and risk of type 2 diabetes and whether the strength of this association is consistent across five European centres. Design Population-based prospective case-cohort study. Setting Enrolment took place between 1992 and 2000 in five European centres (Bilthoven, Cambridge, Heidelberg, Potsdam and Umeå). Participants Self-rated health was assessed by a baseline questionnaire in 3399 incident type 2 diabetic case participants and a centre-stratified subcohort of 4619 individuals from the European Prospective Investigation into Cancer and Nutrition (EPIC)-InterAct study which was drawn from a total cohort of 340 234 participants in the EPIC. Primary outcome measure Prentice-weighted Cox regression was used to estimate centre-specific HRs and 95% CIs for incident type 2 diabetes controlling for age, sex, centre, education, body mass index (BMI), smoking, alcohol consumption, energy intake, physical activity and hypertension. The centre-specific HRs were pooled across centres by random effects meta-analysis. Results Low self-rated health was associated with a higher hazard of type 2 diabetes after adjusting for age and sex (pooled HR 1.67, 95% CI 1.48 to 1.88). After additional adjustment for health-related variables including BMI, the association was attenuated but remained statistically significant (pooled HR 1.29, 95% CI 1.09 to 1.53). I2 index for heterogeneity across centres was 13.3% (p=0.33). Conclusions Low self-rated health was associated with a higher risk of type 2 diabetes. The association could be only partly explained by other health-related variables, of which obesity was the strongest. We found no indication of heterogeneity in the association between self-rated health and type 2 diabetes mellitus across the European centres. PMID:23471609

  9. The Geometric Factor of Electrostatic Plasma Analyzers: A Case Study from the Fast Plasma Investigation for the Magnetospheric Multiscale mission

    Science.gov (United States)

    Collinson, Glyn A.; Dorelli, John Charles; Avanov, Leon A.; Lewis, Gethyn R.; Moore, Thomas E.; Pollock, Craig; Kataria, Dhiren O.; Bedington, Robert; Arridge, Chris S.; Chornay, Dennis J.; Gliese,Ulrik; Mariano, Al.; Barrie, Alexander C; Tucker, Corey; Owen, Christopher J.; Walsh, Andrew P.; Shappirio, Mark D.; Adrian, Mark L.

    2012-01-01

    We report our findings comparing the geometric factor (GF) as determined from simulations and laboratory measurements of the new Dual Electron Spectrometer (DES) being developed at NASA Goddard Space Flight Center as part of the Fast Plasma Investigation on NASA's Magnetospheric Multiscale mission. Particle simulations are increasingly playing an essential role in the design and calibration of electrostatic analyzers, facilitating the identification and mitigation of the many sources of systematic error present in laboratory calibration. While equations for laboratory measurement of the Geometric Factpr (GF) have been described in the literature, these are not directly applicable to simulation since the two are carried out under substantially different assumptions and conditions, making direct comparison very challenging. Starting from first principles, we derive generalized expressions for the determination of the GF in simulation and laboratory, and discuss how we have estimated errors in both cases. Finally, we apply these equations to the new DES instrument and show that the results agree within errors. Thus we show that the techniques presented here will produce consistent results between laboratory and simulation, and present the first description of the performance of the new DES instrument in the literature.

  10. An investigation on the relationship between arbitrage and macro-economic indicators: A case study of Tehran Stock Exchange

    Directory of Open Access Journals (Sweden)

    Samira Fazli

    2014-04-01

    Full Text Available This paper presents an empirical investigation to study the effects of macro-economic factors on the performance of stocks listed on Tehran Stock Exchange (TSE. The proposed study considers the effects of money supply, inflation rate, oil price, unforeseen changes in the course structure of interest rates as well as unanticipated changes in industrial production on stock price. Using seasonal information of stock price over the period 1997-2007 as well as regression analysis, the study has determined that risk premium of unforeseen changes in the course structure of interest rates, money supply, inflation rate and unanticipated changes in industrial production are meaningful when the level of significance is five percent. In other words, Arbitrage pricing theory model describing the expected return per share is reasonable and macro-level variables explain systematic risk on TSE.

  11. Investigating wind power`s effective capacity: A case study in the Caribbean Island of La Martinique

    Energy Technology Data Exchange (ETDEWEB)

    Perez, R.; Germa, J.M.; Bailey, B. [AWS Scientific, Inc., Paris (France)

    1996-12-31

    In this paper, we report on the experimental determination of the effective capacity of wind and photovoltaic (PV) power generation with respect to the utility load requirements of the Island of La Martinique. La Martinique is a French Overseas Department in the Caribbean Sea. The case study spans two years, 1990 and 1991. We consider wind generation at three locations in different wind regimes, and PV generation for fixed and tracking flat plate systems. The results presented include: (1) An overview of typical solar and wind power output at each considered site, presented in contrast to the Island`s electric load requirements; and (2) Effective capacities quantified for each resource as a function of penetration in the utility generation mix. 7 refs., 6 figs.

  12. The Reality of Rhetoric in Information Systems Adoption: A Case Study Investigation of the Uk National Health Service

    Science.gov (United States)

    Khan, Imran; Ferneley, Elaine

    The UK National Health Service is undergoing a tremendous IS -led change, the purpose of which is to create a service capable of meeting the demands of the 21st century. The aim of this paper is to examine the extent to which persuasive discourse, or rhetoric, influences and affects the adoption of information systems within the health sector. It seeks to explore the ways in which various actors use rhetoric to advance their own agendas and the impact this has on the system itself. As such, the paper seeks to contribute to diffusion research through the use of a case study analysis of the implementation of an Electronic Single Patient Care Record system within one UK Health Service Trust. The findings of the paper suggest that rhetoric is an important and effective persuasive tool, employed by system trainers to coax users into not only adopting the system but also using the system in a predefined manner.

  13. Investigating the Influence of Employee Attitude toward Change and Leadership Style on Change Readiness by SEM (Case Study: Isfahan Municipality

    Directory of Open Access Journals (Sweden)

    Ali Faghihi

    2012-11-01

    Full Text Available Change has become a normal occurrence within organizations and especially municipalities, due to the rapid society and economic changes. In a competitive global economy, organizations are forced to stay abreast with environmental changes in order to survive. Employee readiness for change can be a determining factor of successful change. To recognize antecedents of change readiness, the present study has conducted two variables of employee's attitude toward change as individual aspect and leadership style as organizational aspect of change readiness. The hypotheses have been tested by SEM on sample case of Isfahan municipality as a powerful organization which deals with change. The results have indicated that there are positive significant relationships between employee's attitude toward change and employee readiness and also change-oriented leadership style and employee readiness.

  14. Non-invasive investigative techniques for the diachronic study of territorial compartments: a case study for the documentation and analysis of architectural complexes.

    Science.gov (United States)

    Di Lieto, Marco; Marchetta, Isabella; Ciriello, Rosanna; De Martino, Gregory; Della Mora, Dario

    2014-05-01

    The trend in the study of areas of land in their integrity and as dynamic, anthropic units in diachronic history has initiated long survey campaigns over several decades that have covered large areas mapping the evidence and attempting a reconstruction of the evolution of ancient settlements. The need for further study to disentangle the knots of modes and types of settlement boosted further investigations of targeted excavations, based on the quality and density of the findings from the field. Currently archaeological research can rely on non-invasive integrated methods to better define the areas to be investigated systematically obtaining new typologies of information and better management of time and research costs. In this paper we present a specific case study in which a variety of integrated survey methods have contributed to the documentation and analysis of monumental complexes linked to specific local contexts. The area under investigation lies in Italy, in the province of Potenza and, specifically in the town of Forenza. The survey activities, involving the entire municipality, have been running on and off for about 2 years and have already resulted in the collection of a lot of interesting data that will be useful to essential fieldwork. In particular, we carried out different types of investigation in three different sample sites: 1. monumental complex of Santa Maria de 'Armenis: to complement previous excavations which involved only a portion of the estimated area of interest, we carried out magnetometric and geo-electrical surveys aimed at a more precise definition of the true extent and interpretation of the monument in antiquity; 2. site of Monte Caruso: we carried out remote sensing using a remote-controlled UAV hexakopter drone with stereoscopic photogrammetric survey techniques aimed at the detailed documentation of the monumental evidence of a structure visible in elevation but in a context difficult to approach with traditional surveying

  15. Investigating the relationship between outsourcing and performance based on Balanced Score Card (Case study Ilam Post Office

    Directory of Open Access Journals (Sweden)

    Karam Khalili

    2014-01-01

    Full Text Available Today, outsourcing can play a crucial role in satisfying customers and meeting their requirements; therefore post office has devoted some of its services and supports for improving the performance, reducing the expenses, and modifying the organizational structure. The main purpose of this study is to investigate the relationship between outsourcing and the performance based on Balanced Score Card (Ilam Post Office in 2013. This study was a descriptive-survey and it utilized a questionnaire for collecting data. SPSS software was used to analyze the data. Useable data were gathered from 18 managers and assistants. T-student and correlation method was used for data analysis. The results showed that there are a strong and positive relationship between outsourcing post office activities and performance management in three aspects of financial, customers and internal processes; however there was a positive and weak relationship between the aspect of learning and outsourcing.

  16. Neural Control of Voluntary Eye Closure: A Case Study and an fMRI Investigation of Blinking and Winking

    Directory of Open Access Journals (Sweden)

    Martijn G. van Koningsbruggen

    2012-01-01

    Full Text Available The current paper describes a rare case of a patient who suffered from unilateral apraxia of eye closure as a result of a bilateral stroke. Interestingly, the patient’s ability to voluntarily close both eyelids (i.e. blinking was not affected, indicating that different neural mechanisms control each type of eye closure. The stroke caused damage to a large part of the right frontal cortex, including the motor cortex, pre-motor cortex and the frontal eye field (FEF. The lesion in the left hemisphere was restricted to the FEF. In order to further study the neural mechanisms of eye closure, we conducted an fMRI study in a group of neurological healthy subjects. We found that all areas of the oculomotor cortex were activated by both left and right winking, including the FEF, supplementary eye field (SEF, and posterior parietal cortex (PPC. Blinking activated FEF and SEF, but not PPC. Both FEF and PPC were significantly more active during winking than blinking. Together, these results provide evidence for a critical role of the FEF in voluntary unilateral eye closure.

  17. Comparative case study investigating sociotechnical processes of change in the context of a national electronic health record implementation.

    Science.gov (United States)

    Cresswell, Kathrin M; Worth, Allison; Sheikh, Aziz

    2012-12-01

    The introduction of electronic health records (EHRs) lies at the heart of many international efforts to improve the safety and quality of healthcare. England has attempted to introduce nationally procured EHR software--the first country in the world to do so. In this qualitative comparative case study tracing local developments over time we sought to generate a detailed picture of the implementation landscape characterising this first attempt at implementing nationally procured software through studying three purposefully selected hospitals. Despite differences in relation to demographic considerations and local implementation strategies, implementing hospitals faced similar technical and political challenges. These were coped with differently by the various organisations and individual stakeholders, their responses being shaped by contextual contingencies. We conclude that national implementation efforts need to allow effective technology adoption to occur locally before considering larger-scale interoperability. This should involve the allocation of sufficient time for individual users and organisations to adjust to the complex changes that often accompany such service re-design initiatives. PMID:23257056

  18. Community Cognition Investigation and Research on Tourists Disaster of Mountain Tourism-taking Taibai Moutain as a Case Study

    Directory of Open Access Journals (Sweden)

    Zhao Jian-Chang

    2014-06-01

    Full Text Available The aim of the study focus on the community cognition to disasters of tourism taking the disasters frequently happens in Taibai Mountains as the case. The research covers people’s cognition in tourist destination, which is closely related to the development and the economy in tourism. The age, education, occupation, income and the degree of relation to the tourism are also the important factors. The cognition of the community is the disasters influence, the disasters avoidance, the disasters knowledge and the disasters research. It is found that the elderly, higher education and income groups in community have more requirements to tourism development; community young people, local people and engaged in tourism business or management groups are not satisfied with the community benefits which gets through the development of tourism at present; more elderly, civil servants and workers staff in community know about the influence of the tourism disasters to social, economic and cultural in scenic spots; the young people, local and engaged in tourism business and management groups of community know more about prevention work of tourism disaster; higher education and youth groups in community have more knowledge of tourism disaster; more community civil servants are skeptical to the study of tourism disaster. Analyzing the results from the tourist areas, this research can offer advice to local governments and the administrations of the tourism, esp. develop the community avoidance ability in order that the system of the avoidance administration could be established.

  19. Investigation of Ground water Potential using Mathematical Model: A Case Study in Part of Northwest Region of Bangladesh

    Directory of Open Access Journals (Sweden)

    Md. Tarikul Islam

    2015-05-01

    Full Text Available Groundwater is the most essential and valuable resources for agriculture, domestic and industrial purposes. Unplanned withdrawal of groundwater is risky for the system due to limited replenishment and increasing water demand with continuously growing population, especially for the arid and semi-arid catchments. Scarcity of rainfall in time and reducing of upstream flow in the internal rivers have increased dependency on groundwater irrigation. Estimation of groundwater potential for a region is essential not only for sustainability of irrigation project but also for a sustainable water resources management at the regional level, which means in general at the basin scale. Due to the competition of all water users of a river basin, especially in water scarce regions, a comprehensive approach is needed regarding agricultural, domestic, industrial, and ecological aspects. In this paper, a case study was carried out for Pabna, Sirajgonj, Bogra, Gaibandha, Rangpur, Kurigram, Nilphamari and Lalamonirhat Districts which is situated in the north-west part of Bangladesh using physically distributed hydrological modelling. To bring about 3,000 km2 potential land under irrigation through sustainable water resources management, an integrated Groundwater-Surface Water model was developed using mathematical modelling tools which was calibrated for the period 2006-2010 and validated for the period 2011-2013. Using model result, groundwater water resources, requirement for present and future demand for various purposes and possible expansion of irrigation coverage for the study area were assessed. As a result irrigation coverage as well as agricultural production would be increased considerably if the project is implemented following the study findings and suggestions. So the study output has positive impact and for sustainable water resources management it is essential to use the state-of -the art technology.

  20. An investigative study of indigenous sweet sorghum varieties for bioethanol production: the case of Kenya local sorghum varieties

    Energy Technology Data Exchange (ETDEWEB)

    Wangai, L.K.; Mbeo, C.O. [Kenya Industrial Research and Development Inst., Nairobi (Kenya); Kamau, C.K. [Kenya Agricurtural Research Inst.(s), Machakos (Kenya)

    2012-11-01

    There are over 500 sorghum genotypes grown locally in Kenya. This study was an investigation and selection of suitable sorghum genotypes for sustainable bio-ethanol production in Kenya. For the study, 500 genotypes of sorghum were planted and grown using the recommended agricultural practices. Random sampling of 230 genotypes was done and the samples analysed for juice and sugar content. The 26 best yielding genotypes were selected and grown again in duplicate for further detailed study. Data on date of flowering, pest resistance, {sup 0}brix, wet and dry weight, plant population, ratooning, grain yield and juice yield and juice sugar content were recorded and analyzed using GENstat. Sampling was done for each genotype when about 50% of the crop had flowered and there after, every 2 weeks until the grains dried. Crushing was done with a three roller mill crusher [8]. The sugar content was measured using a digital refractometer. Sugar yield obtained ranged between 10.3{sup 0}Brix and 19.3{sup 0}Brix and juice yield between 268 litres/hectare and 11390 litres/hectare. Five indigenous sorghum varieties, GBK-007130, GBK-007076, GBK-007102, GBK-007296, GBK-007098 were found to have the highest sugar and juice yields and were considered the most suitable sweet sorghum genotypes among those studied, for bio-ethanol production in Kenya.

  1. An investigation of somatosensory profiles in work related upper limb disorders: a case-control observational study protocol.

    LENUS (Irish Health Repository)

    Moloney, Niamh

    2010-01-01

    BACKGROUND: Work related upper limb disorders constitute 45% of all occupational diseases and are a significant public health problem. A subgroup, non specific arm pain (NSAP), remains elusive in terms of understanding its pathophysiological mechanisms with its diagnosis based on the absence of specific clinical findings. One commonly proposed theory is that a neural tissue disorder is the primary dysfunction in NSAP and findings from previous studies lend some support to this theory. However, it is not clear if changes identified are simply a consequence of ongoing pain rather than due to specific neural changes. The presence of neuropathic pain has been investigated in several other musculoskeletal conditions but currently, there is no specific diagnostic tool or gold standard which permits an unequivocal diagnosis of neuropathic pain. The purpose of this study is to further describe the somatosensory profiles in patients with NSAP and to compare these profiles to a group of patients with MRI confirmed cervical radiculopathy who have been previously classified as having neuropathic pain. METHODS\\/DESIGN: Three groups of participants will be investigated: Groups 1 and 2 will be office workers with either NSAP or cervical radiculopathy and Group 3 will be a control group of non office workers without upper limb pain. Participants will undergo a clinical assessment, pain questionnaires (LANSS, Short Form McGill, DASH and TSK) and quantitative sensory testing comprising thermal detection and pain thresholds, vibration thresholds and pressure pain thresholds. DISCUSSION: The spectrum of clinically suspected neuropathic pain ranges from more obvious conditions such as trigeminal neuralgia to those with vague signs of nerve disorder such as NSAP. A thorough description of the somatosensory profiles of NSAP patients and a comparison with a more defined group of patients with evidence of neuropathic pain will help in the understanding of underlying neurophysiology in

  2. Investigation of Barriers and Factors Affecting the Reverse Logistics of Waste Management Practice: A Case Study in Thailand

    Directory of Open Access Journals (Sweden)

    Sumalee Pumpinyo

    2014-10-01

    Full Text Available Economic growth in developing countries accelerated waste generation, and Thailand also is experiencing issues related to increased waste generation and improper waste management. The country’s domestic waste utilization is only 20%–26%. Efficient waste management and increased quantity of waste utilization is possible only by overcoming problems and constraints in reverse logistics (RL systems in Thailand. To address these issues and constraints, this study aims to focus the investigation on the current practices in the RL systems. The study was conducted in Bangkok and its vicinity. An integrated approach of qualitative and quantitative methods was employed to investigate the systems’ and stakeholders’ characteristics and to explore the factors influencing and constraining RL practices. Data were gathered through: (1 existing literature and in-depth interviews of key stakeholders involved in RL; and (2 a questionnaire survey of 98 managers of separation centers (SCs probing their practices and studying the factors influencing those practices. The findings showed that RL systems can be separated into three levels, i.e., downstream, middle stream and upstream. SCs are key stakeholders in RL of waste management, and they collect waste from downstream, manage waste in a systematic way and send it upstream. The factors influencing and the barriers in the flow of recyclable waste are related to environmental, economic and social aspects. The analysis shows that waste managed by a cooperative-like franchise of SCs perceived that their practices were more efficient than those of a non-franchise practices. Additionally, these SCs have more bargaining power with waste buyers and sellers to set prices in the RL system. The constraints in RL practice are related to finance, market, labor, management/technology and legal issues.

  3. Comparative Investigation of River Water Quality by OWQI, NSFWQI and Wilcox Indexes (Case study: the Talar River – IRAN

    Directory of Open Access Journals (Sweden)

    Darvishi Gholamreza

    2016-03-01

    Full Text Available Rivers are considered as one of the main resources of water supply for various applications such as agricultural, drinking and industrial purposes. Also, these resources are used as a place for discharge of sewages, industrial wastewater and agricultural drainage. Regarding the fact that each river has a certain capacity for acceptance of pollutants, nowadays qualitative and environmental investigations of these resources are proposed. In this study, qualitative investigation of the Talar river was done according to Oregon Water Quality Index (OWQI, National Sanitation Foundation Water Quality Index (NSFWQI and Wilcox indicators during 2011–2012 years at upstream, midstream and downstream of the river in two periods of wet and dry seasons. According to the results of OWQI, all of the values at 3 stations and both periods are placed at very bad quality category and the water is not acceptable for drinking purposes. According to NSFWQI, the best condition was related to the upstream station at wet season period (58, medium quality and the worst condition was related to the downstream in wet season period (46, very bad quality. Also the results of Wilcox showed that in both periods of wet season and dry season, the water quality is getting better from upstream station to the downstream station, and according to the index classification, the downstream water quality has shown good quality and it is suitable for agriculture.

  4. 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......In order to comprehend the impact of music therapy or music therapy processes, a researcher might look for an approach where the topic under investigation can be understood within a broader context. This calls for a rich inclusion of data and consequently a limited number of participants and may...... 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....

  5. Investigation corporate governance characteristics on risk taking: A case study of private banks listed in Tehran Stock Exchange

    Directory of Open Access Journals (Sweden)

    Mohammad Khodaei Valahzaghard

    2013-02-01

    Full Text Available During the past few years, there have been tremendous works on detecting the relationship between banks performance and the number of seats on board of directors. Board of directors of banks is responsible for shareholders ownership’s interest. In this study, governance and ownership characteristics affecting risk appetite on some private banks listed in Tehran Stock Exchange is studied. The study investigates 12 private banks for a period 2005-2011 based on the implementation of some regression analysis using panel data. The results indicate that the effect of five major shareholders on risk-taking is positive and significant. The effect of institutional ownership on risk-taking is negative and significant. Effects of other variables, including the percentage of ownership concentration, return on assets and the logarithm of cash from operations (CFO on risk-taking of the private banks are not significant. The effects of board size, reliance on debt and log of assets on risk-taking are significantly negative among private banks in Iran. These results indicate that shareholders that are institutional investors play a key role in monitoring managers.

  6. An investigation of impact of Brand Extension on Parent Brand Image: A case study of Johnson, UK

    Directory of Open Access Journals (Sweden)

    Muhammad Shakil Ahmad

    2011-05-01

    Full Text Available Purpose of study: The main purpose of this study is to investigate the impact of brand extensions on parent brand image. For this purpose Johnson is selected as parent brand for current study. The selected brand extensions are Johnson shampoo, Johnson’s isotonic drinks, Johnson’s sportswear and Johnson’s suntan lotion. Research Methodology: sample was selected from Bradford, UK. Sample consists of consumer of Johnson including males as well as female. Total sample size is 250 and data was collected through self administered questionnaires. Convenience sampling was selected as sampling technique. Results: Correlation analysis indicated negative impact of brand extension on parent brand image if brand extension is done in different brand categories. Perceived brand quality and perceived brand fit of the extension also affect the parent brand image. Conclusion: It is concluded that if brand extension is done in the same product category of parent brand then there is possibly high acceptance for the brand extension rather than in the different product categories.

  7. Investigation of the Potential Market and Estimation of WTP for Insurance of Pistachio Tree Trunk (Case Study Rafsanjan-Iran

    Directory of Open Access Journals (Sweden)

    Mostafa Baniasadi

    2013-12-01

    Full Text Available Capacity of garden productions in Iran is such that is accounted as a country that produces thirteen garden products in the world but despite excellent condition in Iran for producing garden products, natural disasters damage production of fruits in the country therefore farmers incur a loss. Pistachio tree has been in danger of destruction and dryness. Thus, in order to reduce loss incurred on trees, it is necessary to insure the tree. This study is aimed to investigate factors affecting willingness towards insurance of pistachio tree and to estimate willingness to pay premium for pistachio tree in Rafsanjan located in Kerman province. For this purpose, methods of contingent valuation and double bounded dichotomous have been used. Research data were obtained by field method and interview with 184 pistachio gardeners in 2012. Results suggest that willingness to pay premium of pistachio tree in central part, Anar and Kashkuieh has been estimated by 1953, 3255.8 and 1183.3 IRR per tree respectively. Considering results and high risk destruction of pistachio trees, it is suggested that premium of pistachio tree is offered to reduce risk and loss of pistachio gardeners. In order to determine premium in Rafsanjan, WTP calculated in this study can be used.

  8. Investigating the Factors Affecting Human Resource Planning after Large-scale Natural Disasters: A Case Study on the Bam Earthquake

    OpenAIRE

    Ali Azimi; Ali Shirazi

    2014-01-01

    Human Resource Planning (HRP) plays a pivotal role in organizations through providing the balance between supply and demand for qualified human resources; in times of crisis, especially those cases with large number of fatalities, HRP will become even more important. In the case of Bam earthquake in 2003, the public education system of the region, with around 32000 students and 2700 teachers, was heavily struck by loss of around 900 teachers. The present research, therefore, aims to investiga...

  9. Investigation of background acoustical effect on online surveys: A case study of a farmers' market customer survey

    Science.gov (United States)

    Tang, Xingdi

    Since the middle of 1990s, internet has become a new platform for surveys. Previous studies have discussed the visual design features of internet surveys. However, the application of acoustics as a design characteristic of online surveys has been rarely investigated. The present study aimed to fill that research gap. The purpose of the study was to assess the impact of background sound on respondents' engagement and satisfaction with online surveys. Two forms of background sound were evaluated; audio recorded in studios and audio edited with convolution reverb technique. The author recruited 80 undergraduate students for the experiment. These students were assigned to one of three groups. Each of the three groups was asked to evaluate their engagement and satisfaction with a specific online survey. The content of the online survey was the same. However, the three groups was exposed to the online survey with no background sound, with background sound recorded in studios; and with background sound edited with convolution reverb technique. The results showed no significant difference in engagement and satisfaction in the three groups of online surveys; without background sound, background sound recorded in studios, and background sound edited with convolution reverb technique. The author suggests that background sound does not contribute to online surveys in all the contexts. The industry practitioners should be careful to evaluate the survey context to decide whether the background sound should be added. Particularly, ear-piercing noise or acoustics which may link to respondents' unpleasant experience should be avoided. Moreover, although the results did not support the advantage of the revolution reverb technique in improving respondents' engagement and satisfaction, the author suggests that the potential of the revolution reverb technique in the applications of online surveys can't be totally denied, since it may be useful for some contexts which need further

  10. The study of chromosome aberration yield in human lymphocytes as an indicator of radiation dose. 3. A review of cases investigated: 1971-72

    International Nuclear Information System (INIS)

    Results from cytogenetic investigations into 54 cases of suspected overexposure to radiation are reviewed. This report is a sequel to NRPB-R5 which contained data from the first 41 studies; results from all 95 investigations have been pooled for general analysis. Brief accounts are given of the circumstances behind the 54 later investigations and where possible physical estimates of dose have been included for comparison. From data on lymphocyte half-life obtained in the first series of cases, an attempt has been made to allow for the loss of damaged cells where the exposure occurred some years previously. The presence of incomplete chromosome damage appears to be characteristic of exposures which occurred some years ago. The ratio of dicentrics to acentrics observed in the accident investigation has been compared with that obtained in recent research studies. The problem of interpreting aberration yield in cases of exposure to kV non-penetrating radiation and to partial body doses, such as to fingers, has been discussed. In addition the problem of selective irradiation of lymphocytes by internally incorporated radionuclides in, for example, lymph nodes and highly vascular tissue, has been examined. Difficulties have been encountered in culturing leukaemic lymphocytes. These and other areas of research which would benefit cytogenetic dosimetry are discussed. (author)

  11. Investigation of model capability in capturing vertical hydrodynamic coastal processes: a case study in the North Adriatic Sea

    Directory of Open Access Journals (Sweden)

    W. J. McKiver

    2015-08-01

    Full Text Available In this work we consider a numerical study of hydrodynamics in the coastal zone using two different models, SHYFEM and MITgcm, to assess their capability to capture the main processes. We focus on the North Adriatic Sea during a strong dense water event that occurred at the beginning of 2012. This serves as an interesting test case to examine both the models strengths and weaknesses, while giving an opportunity to understand how these events affect coastal processes, like upwelling and downwelling, and how they interact with estuarine dynamics. Using the models we examine the impact of setup, surface and lateral boundary treatment, resolution and mixing schemes, as well as assessing the importance of nonhydrostatic dynamics in coastal processes. Both models are able to capture the dense water event, though each displays biases in different regions. The models show large differences in the reproduction of surface patterns, identifying the choice of suitable bulk formulas as a central point for the correct simulation of the thermohaline structure of the coastal zone. Moreover, the different approaches in treating lateral freshwater sources affect the vertical coastal stratification. The results indicate the importance of having high horizontal resolution in the coastal zone, specifically in close proximity to river inputs, in order to reproduce the effect of the complex coastal morphology on the hydrodynamics. A lower resolution offshore is acceptable for the reproduction of the dense water event, even if specific vortical structures are missed. Finally, it is found that nonhydrostatic processes are of little importance for the reproduction of dense water formation in the shelf of the North Adriatic Sea.

  12. Investigation of model capability in capturing vertical hydrodynamic coastal processes: a case study in the north Adriatic Sea

    Science.gov (United States)

    McKiver, W. J.; Sannino, G.; Braga, F.; Bellafiore, D.

    2016-01-01

    In this work we consider a numerical study of hydrodynamics in the coastal zone using two different models, SHYFEM (shallow water hydrodynamic finite element model) and MITgcm (Massachusetts Institute of Technology general circulation model), to assess their capability to capture the main processes. We focus on the north Adriatic Sea during a strong dense water event that occurred at the beginning of 2012. This serves as an interesting test case to examine both the models strengths and weaknesses, while giving an opportunity to understand how these events affect coastal processes, like upwelling and downwelling, and how they interact with estuarine dynamics. Using the models we examine the impact of setup, surface and lateral boundary treatment, resolution and mixing schemes, as well as assessing the importance of nonhydrostatic dynamics in coastal processes. Both models are able to capture the dense water event, though each displays biases in different regions. The models show large differences in the reproduction of surface patterns, identifying the choice of suitable bulk formulas as a central point for the correct simulation of the thermohaline structure of the coastal zone. Moreover, the different approaches in treating lateral freshwater sources affect the vertical coastal stratification. The results indicate the importance of having high horizontal resolution in the coastal zone, specifically in close proximity to river inputs, in order to reproduce the effect of the complex coastal morphology on the hydrodynamics. A lower resolution offshore is acceptable for the reproduction of the dense water event, even if specific vortical structures are missed. Finally, it is found that nonhydrostatic processes are of little importance for the reproduction of dense water formation in the shelf of the north Adriatic Sea.

  13. 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

  14. Design as a functional leader: a case study to investigate the role of design as a potential leading discipline in multinational organisations

    OpenAIRE

    Aftab, Mersha

    2013-01-01

    This research investigates the role of design as a ‘functional leader’1 in multinational organisations, to drive innovation successfully at a strategic level. It involved a detailed case study of the innovation process, and practices within Philips Design, Eindhoven, The Netherlands, where design is a key function within the company but not yet recognised as a leading strategic discipline. Philips Design wanted design research to build an integrated map of its actual practices and correlat...

  15. DESIGN AS A FUNCTIONAL LEADER: A case study of Philips to investigate the potential of design as a leading functional discipline

    OpenAIRE

    Aftab, Mersha; Young, Robert; MacLarty, Liz

    2013-01-01

    This research investigates the role of design as a functional leader in multinational industries, to drive innovation successfully at a strategic level. It involved a detailed case study of the innovation process, and practices within Philips Design based in Eindhoven, The Netherlands, where design is a key decision making function within the company but not yet recognised as a leading discipline at strategic level. Philips Design wanted to use design research to build an integrated map of it...

  16. Investigating Consumer Insight by Using Completion Techniques: A Case Study of a Motorcycle Accessory Shop in Thailand

    Directory of Open Access Journals (Sweden)

    2012-01-01

    Full Text Available With almost 10% of the world’s motorcycles in use in Thailand, this indicates that Thailand is a big market for motorcycle accessories in the world. This qualitative research aims to investigate consumer insight by using completion techniques (sentence completion and story completion. Three respondents were deployed by using accidental sampling. Respondents were recruited to complete questionnaires when they entered the motorcycle accessory shop and were reported as male, currently studying, and at least 12 years old. The research was conducted in a motorcycle accessory shop in Sakon Nakhon province, Thailand. From the results of the story completion tests, all participants agreed to take part in a promotion which gave a 10% discount for membership card holders. They came to the motorcycle accessory shop by the recommendation of friends (positive Word-Of-Mouth. Moreover, consumers are satisfied when a seller can give them information or suggestions on motorcycle accessories as well as providing good after-sales service. When motorcycle accessory shoppers are satisfied with a motorcycle accessory shop, they will return to the shop and hence demonstrate consumer loyalty.

  17. An investigation on economic growth and tax: A case study of D8 countries from 1990 to 2009

    Directory of Open Access Journals (Sweden)

    Nahid Abedini Najafabadi

    2012-10-01

    Full Text Available Experiences of different countries with efficient tax systems have shown that the high share of tax resources than non-tax sources could prevent many unpleasant economical events. In other words, an efficient tax system could ensure economic system against many different risks. Tax is also a primary source for developing economy used by government. In this study, we investigate the relationship between economic growth and tax among D8 countries using panel data from 1990 to 2009. The results indicate growth domestic product is the most important factor and these governments could collect more tax as the economic figures improve. The results of our survey show that an increase of one percent on GDP will increase taxable income for about 0.0014119 percent. The tourism has more impact since an increase of one unit in tourism's income; taxable income will increase for about 10.26257 units. One the contrary to other variables, unemployment has a negative impact on taxable income.

  18. The Heavy Vehicle Study: a case-control study investigating risk factors for crash in long distance heavy vehicle drivers in Australia

    Directory of Open Access Journals (Sweden)

    Grunstein Ron R

    2010-03-01

    Full Text Available Abstract Background Heavy vehicle transportation continues to grow internationally; yet crash rates are high, and the risk of injury and death extends to all road users. The work environment for the heavy vehicle driver poses many challenges; conditions such as scheduling and payment are proposed risk factors for crash, yet the precise measure of these needs quantifying. Other risk factors such as sleep disorders including obstructive sleep apnoea have been shown to increase crash risk in motor vehicle drivers however the risk of heavy vehicle crash from this and related health conditions needs detailed investigation. Methods and Design The proposed case control study will recruit 1034 long distance heavy vehicle drivers: 517 who have crashed and 517 who have not. All participants will be interviewed at length, regarding their driving and crash history, typical workloads, scheduling and payment, trip history over several days, sleep patterns, health, and substance use. All participants will have administered a nasal flow monitor for the detection of obstructive sleep apnoea. Discussion Significant attention has been paid to the enforcement of legislation aiming to deter problems such as excess loading, speeding and substance use; however, there is inconclusive evidence as to the direction and strength of associations of many other postulated risk factors for heavy vehicle crashes. The influence of factors such as remuneration and scheduling on crash risk is unclear; so too the association between sleep apnoea and the risk of heavy vehicle driver crash. Contributory factors such as sleep quality and quantity, body mass and health status will be investigated. Quantifying the measure of effect of these factors on the heavy vehicle driver will inform policy development that aims toward safer driving practices and reduction in heavy vehicle crash; protecting the lives of many on the road network.

  19. Using InSAR to investigate long term caldera unrest: case studies from Yellowstone and Long Valley

    Science.gov (United States)

    battaglia, maurizio

    2016-04-01

    Interpreting geodetic measurements can be particularly difficult in the case of slow, years-to-decades deformation, such as that commonly observed at large Quaternary silicic calderas. For example, Yellowstone caldera has shown a complex behavior over recent decades: uplift of resurgent domes within the caldera started sometime after 1923, reaching a total of 90 cm, but in 1984 the deformation reversed to subsidence at a rate of 1-2 cm/yr until 1992. Starting in 1992, the deformation began migrating from one resurgent dome to the other, and deformation was also detected along the caldera boundary - the so-called Northern Caldera Rim - starting in the mid-1990s. Evidence from geodetic surveys suggests that magma intrusion and/or pressurization of hydrothermal fluids may both drive uplift at Yellowstone. Geodetic measurements at Long Valley caldera have also revealed multiple episodes of caldera uplift, but in contrast to Yellowstone, deformation is largely restricted to the caldera's single resurgent dome. The fact that the energy released during the resurgent dome uplift is much larger than that which can be explained by seismic activity within and around the caldera, together with the observation that the onset of accelerated deformation precedes increases in earthquake activity by several weeks, suggests that the major source of caldera unrest is probably magma intrusion beneath the resurgent dome. Here we present time series of surface deformation for Yellowstone and Long Valley retrieved by applying the SBAS InSAR technique. We estimate the average regional deformation signal by using the mean velocity values derived from coherent SAR pixels belonging to areas outside the caldera. This tectonic signal is removed from the InSAR displacement and we modeled the InSAR, leveling, and gravity measurements to retrieve the best fitting source parameters. For Yellowstone caldera, different distinct sources, either hydrothermal or magmatic, have been intermittently

  20. Investigating the consistency between proxy-based reconstructions and climate models using data assimilation: a mid-Holocene case study

    Directory of Open Access Journals (Sweden)

    A. Mairesse

    2013-12-01

    Full Text Available The mid-Holocene (6 kyr BP; thousand years before present is a key period to study the consistency between model results and proxy-based reconstruction data as it corresponds to a standard test for models and a reasonable number of proxy-based records is available. Taking advantage of this relatively large amount of information, we have compared a compilation of 50 air and sea surface temperature reconstructions with the results of three simulations performed with general circulation models and one carried out with LOVECLIM, a model of intermediate complexity. The conclusions derived from this analysis confirm that models and data agree on the large-scale spatial pattern but the models underestimate the magnitude of some observed changes and that large discrepancies are observed at the local scale. To further investigate the origin of those inconsistencies, we have constrained LOVECLIM to follow the signal recorded by the proxies selected in the compilation using a data-assimilation method based on a particle filter. In one simulation, all the 50 proxy-based records are used while in the other two only the continental or oceanic proxy-based records constrain the model results. As expected, data assimilation leads to improving the consistency between model results and the reconstructions. In particular, this is achieved in a robust way in all the experiments through a strengthening of the westerlies at midlatitude that warms up northern Europe. Furthermore, the comparison of the LOVECLIM simulations with and without data assimilation has also objectively identified 16 proxy-based paleoclimate records whose reconstructed signal is either incompatible with the signal recorded by some other proxy-based records or with model physics.

  1. INVESTIGATING THE INFLUENCE OF TREE COVERAGE ON PROPERTY CRIME: A CASE STUDY IN THE CITY OF VANCOUVER, BRITISH COLUMBIA, CANADA

    OpenAIRE

    Chen, Yifei; Li, Yuenan; Li, Jonathan

    2016-01-01

    With the development of Geographic Information Systems (GIS), crime mapping becomes an effective approach to investigate the spatial pattern of crime in a defined area. Understanding the relationship between crime and its surrounding environment can reveal possible strategies that can reduce crime in a neighbourhood. The relationship between vegetation density and crime has been under debate for a long time. This research is conducted to investigate the impacts of tree coverage on property cr...

  2. Investigation of the generation and propagation of low frequency internal waves: A case study for the east coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, A.D.; Babu, S.V.; Prasad, K.V.S.R.; Murty, T.V.R.; Sadhuram, Y.; Mahapatra, D.K.

    circulation, characterized by counter- rotating eddies (Hareesh kumar et.al, 2001) in the Bay of Bengal. The northern (upper) and southern (lower) regions of the model domain are shown to the right with enhanced resolution. The circulation is driven...) as the model integration goes over 16 days. The energy spectrum using this data is computed as in the case of in-situ observations for low frequency in two parts, i) 0 to 0.12 cph. i.e., up to ~ 8 hour frequency and ii) 0.25 cph to 0.12 cph i.e., 4 to 8 hrs...

  3. The Multiple-Institution Database for Investigating Engineering Longitudinal Development: An Experiential Case Study of Data Sharing and Reuse

    Science.gov (United States)

    Ohland, Matthew W.; Long, Russell A.

    2016-01-01

    Sharing longitudinal student record data and merging data from different sources is critical to addressing important questions being asked of higher education. The Multiple-Institution Database for Investigating Engineering Longitudinal Development (MIDFIELD) is a multi-institution, longitudinal, student record level dataset that is used to answer…

  4. Practice-style case study of"Investigative measures"%《侦查措施》课程践行式案例教学研究

    Institute of Scientific and Technical Information of China (English)

    闫万鸿

    2011-01-01

    This paper,indepth study the characteristics and teaching law of the course"investigative measures",based on the application of the case study,creatively propose practicestyle case study of investigative measures.The teaching point of practicestyle case s%本文深入研究《侦查措施》课程的特点和教学规律,在考察案例教学应用的基础上,创造性提出侦查措施践行式案例教学。侦查措施践行式案例教学的要点在于案例选择的针对性、教学设计的科学性和结果点评的开放性,其关键是让学生亲历其为、主动参与,学生行为与案例情形互动交融。

  5. Investigation of Sediment Transport Mechanisms in the Durres Gulf – Albania Using Radiotracers [Case Study: Radiotracer Applications for Investigation of Bedload Transport of Sediments

    International Nuclear Information System (INIS)

    The radiotracer study had the following objectives: • to clarify the mechanism and to obtain quantitative results regarding the sediment transport in the gulf of Durres; • to find the sediment transport direction and quantity in the vicinity of the access channel of Durres port; • to determine the sediment quantity deposed every year in the channel

  6. Investigating the Influence of Tree Coverage on Property Crime: a Case Study in the City of Vancouver, British Columbia, Canada

    Science.gov (United States)

    Chen, Yifei; Li, Yuenan; Li, Jonathan

    2016-06-01

    With the development of Geographic Information Systems (GIS), crime mapping becomes an effective approach to investigate the spatial pattern of crime in a defined area. Understanding the relationship between crime and its surrounding environment can reveal possible strategies that can reduce crime in a neighbourhood. The relationship between vegetation density and crime has been under debate for a long time. This research is conducted to investigate the impacts of tree coverage on property crime in the City of Vancouver. High spatial resolution airborne LiDAR data collected in 2013 was used for the extraction of tree covered area for cross-sectional analysis. The independent variables were put into Ordinary Least-Squares (OLS) regression, Spatial Lag regression, and Geographically Weighted Regression (GWR) models to examine their influences on property crime rates. According to the results, the cross-sectional analysis demonstrated statistical evidences that property crime rates had negative correlations with tree coverage, with greater influences occurred around Downtown Vancouver.

  7. An investigation of mine closure : gold mine case studies on the East Rand in South Africa / J.H. Nel

    OpenAIRE

    Nel, Johannes Hendrik

    2008-01-01

    This research is on mines that struggle to obtain closure from the state departments. The closure process at the footprints of five Tailings Storage Facilities (TSFs) of a South African gold mine was investigated. They are situated in the Germiston, Brakpan, Springs and Nigel suburbs of the East Rand region of Johannesburg. Very limited scientific research has been done in South Africa on the management of mine closure. The most recent performed research was completed at Coal mines and on...

  8. Investigation of Asset Securitization in Chinese Commercial Banking Sector and Case Studies between U.S. and China

    OpenAIRE

    Gu, Qi

    2007-01-01

    Abstract This paper provides an investigation of Chinese asset securitization in commercial banking sectors. Asset securitizations as one of the most important methods for capital gather and enhance banking liquidity. From it development in the U.S. ABS market in the 1970's it is now recognised by Chinese financial institutions and Chinese commercial banks are state-owned, which play main role in the asset securitization. The different banking system between U.S. and China, reflect on ...

  9. Investigation the impact of outsourcing on competitive advantages' creation by considering Porter's model; Case study: Zamyad Company

    OpenAIRE

    Ahmad Reza Kasrai; Hassan Mehrmanesh; Reza Ayazzade Shirazi

    2012-01-01

    Competitive advantage is an important factor in boosting companies' success and is considered more emphatically in management and strategic marketing literature in recent years. There are many different ideas about effective factors in creation of competitive advantages. Also fast rate of change in business, is forcing CEOs to utilize some strategies, which have the best impact on current organizational circumstances and the future trend of investigation in organizational trades. Outsourcing ...

  10. The study of chromosome aberration yield in human lymphocytes as an indicator of radiation dose. 6. A review of cases investigated: 1975

    International Nuclear Information System (INIS)

    Results from cytogenetic investigations into 37 cases of suspected over-exposure to radiation during 1975 are reviewed. This report is the fifth in an annual series which together contain data on 206 studies. Results from all 206 investigations have been pooled for general analysis. Brief accounts are given in an appendix of the circumstances behind the past year's 37 investigations and where possible physical estimates of dose have been included for comparison. A short review is given of recently completed experiments to determine the effects of dose rate and dose fractionation on the aberration yield, and the importance of these variables for chromosome dosimetry is discussed. A brief outline is also given of those aspects of the current research programme which are aimed at improving the techniques of cytogenetic dosimetry. (author)

  11. First-principles investigation on Rydberg and resonance excitations: A case study of the firefly luciferin anion

    International Nuclear Information System (INIS)

    The optical properties of an isolated firefly luciferin anion are investigated by using first-principles calculations, employing the many-body perturbation theory to take into account the excitonic effect. The calculated photoabsorption spectra are compared with the results obtained using the time-dependent density functional theory (TDDFT) employing the localized atomic orbital (AO) basis sets and a recent experiment in vacuum. The present method well reproduces the line shape at the photon energy corresponding to the Rydberg and resonance excitations but overestimates the peak positions by about 0.5 eV. However, the TDDFT-calculated positions of some peaks are closer to those of the experiment. We also investigate the basis set dependency in describing the free electron states above vacuum level and the excitons involving the transitions to the free electron states and conclude that AO-only basis sets are inaccurate for free electron states and the use of a plane wave basis set is required

  12. Investigation the impact of outsourcing on competitive advantages' creation by considering Porter's model; Case study: Zamyad Company

    Directory of Open Access Journals (Sweden)

    Ahmad Reza Kasrai

    2012-08-01

    Full Text Available Competitive advantage is an important factor in boosting companies' success and is considered more emphatically in management and strategic marketing literature in recent years. There are many different ideas about effective factors in creation of competitive advantages. Also fast rate of change in business, is forcing CEOs to utilize some strategies, which have the best impact on current organizational circumstances and the future trend of investigation in organizational trades. Outsourcing is one of the best strategies, which are widely utilized by CEOs in different organizations. Many managers believe that outsourcing is the solitary way for preserving the balance of organization in 21 century. Based on Porter competitive advantage model, there are three strategies, which lead a company to reach competitive advantage. These strategies are cost leadership, differentiation strategy and segmentation strategy. In this article, we are investigating outsourcing effects on creation of competitive advantages through Porter model in an automotive factory in Iran. We design a questionnaire for gathering necessary information about the role of outsourcing in creation of different strategies as competitive advantages in managers' point of view. We analyze the questionnaires and implement a goodness of fit test to recognize the distribution of data and the statistical method. Preliminary results show that nonparametric statistic methods can be utilized for testing our hypothesis. We use a Wilcoxon test to consider the null hypothesis and a Friedman test to estimate the rank of means. Our findings verify an undeniable effect of outsourcing on creation of competitive advantage and the ranking list is presented.

  13. First-principles investigation on Rydberg and resonance excitations: A case study of the firefly luciferin anion.

    Science.gov (United States)

    Noguchi, Yoshifumi; Hiyama, Miyabi; Akiyama, Hidefumi; Koga, Nobuaki

    2014-07-28

    The optical properties of an isolated firefly luciferin anion are investigated by using first-principles calculations, employing the many-body perturbation theory to take into account the excitonic effect. The calculated photoabsorption spectra are compared with the results obtained using the time-dependent density functional theory (TDDFT) employing the localized atomic orbital (AO) basis sets and a recent experiment in vacuum. The present method well reproduces the line shape at the photon energy corresponding to the Rydberg and resonance excitations but overestimates the peak positions by about 0.5 eV. However, the TDDFT-calculated positions of some peaks are closer to those of the experiment. We also investigate the basis set dependency in describing the free electron states above vacuum level and the excitons involving the transitions to the free electron states and conclude that AO-only basis sets are inaccurate for free electron states and the use of a plane wave basis set is required. PMID:25084912

  14. An empirical investigation for measuring the performance of supply chain operation: A case study of healthcare industry

    Directory of Open Access Journals (Sweden)

    Saeede Nateghinia

    2013-07-01

    Full Text Available A supply chain is a network of facilities for procuring raw materials, transforming them into intermediate goods and then final products, and delivering them to customers through a distribution system. This paper presents an empirical investigation to measure the performance of a hospital based on the implementation of supply chain operations reference (SCOR method. The proposed model of this paper considers five criteria including reliability, responsiveness, agility, costs and assets in one of Iranian hospitals and computes the performance of four important departments including dentistry, radiology, pharmacy and laboratory. The proposed model of this paper uses analytical hierarchy process to assign weights for all criteria to measure the overall performance. The result of this survey indicates that reliability is the most important factor in measuring the performance of medical centers.

  15. Investigation of occupational and environmental causes of respiratory cancers (ICARE: a multicenter, population-based case-control study in France

    Directory of Open Access Journals (Sweden)

    Luce Danièle

    2011-12-01

    Full Text Available Abstract Background Occupational causes of respiratory cancers need to be further investigated: the role of occupational exposures in the aetiology of head and neck cancers remains largely unknown, and there are still substantial uncertainties for a number of suspected lung carcinogens. The main objective of the study is to examine occupational risk factors for lung and head and neck cancers. Methods/design ICARE is a multi-center, population-based case-control study, which included a group of 2926 lung cancer cases, a group of 2415 head and neck cancer cases, and a common control group of 3555 subjects. Incident cases were identified in collaboration with cancer registries, in 10 geographical areas. The control group was a random sample of the population of these areas, with a distribution by sex and age comparable to that of the cases, and a distribution by socioeconomic status comparable to that of the population. Subjects were interviewed face to face, using a standardized questionnaire collecting particularly information on tobacco and alcohol consumption, residential history and a detailed description of occupational history. Biological samples were also collected from study subjects. The main occupational exposures of interest are asbestos, man-made mineral fibers, formaldehyde, polycyclic aromatic hydrocarbons, chromium and nickel compounds, arsenic, wood dust, textile dust, solvents, strong acids, cutting fluids, silica, diesel fumes, welding fumes. The complete list of exposures of interest includes more than 60 substances. Occupational exposure assessment will use several complementary methods: case-by-case evaluation of exposure by experts; development and use of algorithms to assess exposure from the questionnaires; application of job-exposure matrices. Discussion The large number of subjects should allow to uncover exposures associated with moderate increase in risks, and to evaluate risks associated with infrequent or widely

  16. Investigation of inhalation anthrax case, United States.

    Science.gov (United States)

    Griffith, Jayne; Blaney, David; Shadomy, Sean; Lehman, Mark; Pesik, Nicki; Tostenson, Samantha; Delaney, Lisa; Tiller, Rebekah; DeVries, Aaron; Gomez, Thomas; Sullivan, Maureen; Blackmore, Carina; Stanek, Danielle; Lynfield, Ruth

    2014-02-01

    Inhalation anthrax occurred in a man who vacationed in 4 US states where anthrax is enzootic. Despite an extensive multi-agency investigation, the specific source was not detected, and no additional related human or animal cases were found. Although rare, inhalation anthrax can occur naturally in the United States.

  17. Investigating the effect of different conflict management strategies on brand promise: A case study of banking industry

    Directory of Open Access Journals (Sweden)

    Hosseinali Aziziha

    2014-01-01

    Full Text Available The purpose of this paper is to study the effect of different conflict management strategies including competition, cooperation, prevention and compromise on brand promise. The proposed study uses the questionnaire developed by Putnam and Wilson (1982 [Putnam, L. L., & Wilson, C. E. (1982. Communicative strategies in organizational conflicts: Reliability and validity of a measurement scale. Communication yearbook, 6, 629-652.] to measure conflict management measures and to measure the components of brand promise, the study develops a questionnaire. The proposed study is executed among some employees of bank Melli Iran in city of Tehran, Iran. Cronbach alphas have been calculated as 0.76 and 0.83 for conflict management and brand promise, respectively. Using Pearson correlation ratios as well as multiple regression technique, the study determines that there was a reverse relationship between two conflict management strategies, cooperation and compromise, and brand promise. In addition, there was a positive relationship between two conflict management strategies, competition and compromise, and brand promise.

  18. Investigating extreme flood response to Holocene palaeoclimate in the Chinese monsoonal zone: A palaeoflood case study from the Hanjiang River

    Science.gov (United States)

    Guo, Yongqiang; Huang, Chun Chang; Pang, Jiangli; Zha, Xiaochun; Zhou, Yali; Wang, Longsheng; Zhang, Yuzhu; Hu, Guiming

    2015-06-01

    Palaeoflood events recorded by slackwater deposits (SWDs) were investigated extensively by sedimentological criteria of palaeohydrology along the upper Hanjiang River valley. Modern flood SWDs were collected for comparison with palaeoflood SWD in the same reaches. Three typical palaeoflood SWDs were observed within Holocene loess-soil blanket on the first river terrace land. The grain size distributions of palaeoflood SWDs are similar to modern flood SWDs, whereas they are different from eolian loess and soil. Palaeoflood SWD lies in three major pedo-stratigraphic boundaries (TS/L0, L0/S0, and S0/Lt) in the Holocene loess-soil profiles. The chronology of three palaeoflood episodes was established by OSL dating and pedo-stratigraphic correlation with the well-dated Holocene loess-soil profiles in the upper Hanjiang River basin. Holocene palaeoflood events were dated to 9500-8500, 3200-2800, and 1800-1700 a B.P., respectively. Palaeoflood discharges were estimated by the palaeoflood model (i.e., slope-area method and step-backwater method). The highest discharges are 51,680-53,950 m3 s- 1 at the 11,500-time scale in the Xunyang reach of the upper Hanjiang River valley. Holocene extraordinary hydroclimatic events in the Hanjiang River often result from abnormal atmospheric circulations from Southwest monsoons in the Chinese monsoonal zone. These results provide a regional expression of extreme flood response to Holocene palaeoclimate to understand the effects of global climatic variations on the river system dynamics.

  19. Virtual Teams and E-Collaboration Technology: A Case Study Investigating the Dynamics of Virtual Team Communication

    Science.gov (United States)

    Mattison, Theresa

    2011-01-01

    The purpose of this study was to determine to what extent the use of e-collaboration tools when used as a primary channel of communication affected virtual team members' trust and motivation, in a spatially dispersed environment. Structured interviews were conducted with 18 project managers, who were responsible for leading virtual projects…

  20. Investigating Ways to Reform International Education in Confucian Contexts: A Case Study of South Korean Higher Education

    Science.gov (United States)

    Schenck, Andrew; Mottalib, Ramy E.A.; Baldwin, Matthew

    2013-01-01

    The purpose of this study was to explore issues of international education within a Confucian context. Fifteen international learners were purposively sampled from a Korean university; these participants were then given an extensive open-ended interview to elicit information about educational experiences. Data analysis revealed five main issues: a…

  1. A Corpus-Driven Investigation of Chinese English Learners' Performance of Verb-Noun Collocation: A Case Study of "Ability"

    Science.gov (United States)

    Xia, Lixin

    2013-01-01

    The paper makes a contrastive study on the performance of verb-noun collocation given by Chinese EFL learners based on the CLEC, ICLE and BNC. First, all the concordance lines with the token "ability" in the CLEC were collected and analyzed. Then, they were tagged manually in order to sort out the sentences in the verb-noun collocation…

  2. An empirical study to investigate the effects of thinking styles on emotional intelligence: A case study of Jihad Agriculture Organization of east Azerbaijan province

    OpenAIRE

    Habibeh Ayagh; Hassan Darvish

    2013-01-01

    An empirical study to investigate the effects of thinking styles on emotional intelligence among employees of agriculture industry in east Azerbaijan province. The proposed study uses a standard thinking style questionnaire originally developed by Sternberg and Wagner (1992) [Sternberg, R. J., & Wagner, R. K. (1992). Thinking styles inventory. Unpublished test, Yale University]. There are 716 employees working for this agriculture-based unit and the study uses random sampling technique and ch...

  3. An empirical investigation on factors influencing on customer loyalty: A case study of Shahrvand food chain in Tehran

    Directory of Open Access Journals (Sweden)

    Seyed Valiollah Tabatabaee Hanzaee

    2013-06-01

    Full Text Available In today's competitive business environment, consumers are exposed to make their choice from different alternatives. Customer loyalty has never been an easy task and many business owners may lose their customer as soon as new products appear on the market. This paper presents a study to find important factors influencing on sales force using factor analysis. The proposed study designed a questionnaire and distributed among 180 customers of a well-known food chain named Shahrvand in different regions in city of Tehran, Iran and managed to collect 156 filled ones. The questionnaire consists of 68 questions Cronbach alpha was calculated as 0.847, which is well above the minimum acceptable limit and validates the results. The results of our survey indicate that five major factors including multi-sensory brand experience, brand engagement, pleasing brand, brand communications and brand effectiveness influence brand loyalty, significantly.

  4. An investigation on effects of perceived value on brand popularity and brand loyalty: A B2B case study

    Directory of Open Access Journals (Sweden)

    Zakaria Karimi Rad

    2014-03-01

    Full Text Available This research evaluates the effect of perceived value on brand popularity and brand loyalty for some organizations in business-to-business (B2B domain under the effect of risk and e-service quality. The practical relationships among six different kinds of risks including performance, social, financial, time, psychological and safety with consideration of quality in e-commerce business on customer’s perceived value are evaluated and the effects of this perception of value on consequences of perceived value are measured. In this study, using the partial least square method as well as gathering the information of some Iranian firms that use electronic services, the study finds that there was a significant relationship between various types of risks and perceived value. There is also considerable influence of perceived value on satisfaction, brand popularity, and brand loyalty.

  5. Investigating Information-Seeking Behavior of Faculty Members Based on Wilson's Model: Case Study of PNU University, Mazandaran, Iran.

    Science.gov (United States)

    Azadeh, Fereydoon; Ghasemi, Shahrzad

    2016-01-01

    The present research aims to study information seeking behavior of faculty Members of Payame Noor University (PNU) in Mazandaran province of Iran by using Wilson's model of information seeking behavior. This is a survey study. Participants were 97 of PNU faculty Members in Mazandaran province. An information-seeking behavior inventory was employed to gather information and research data, which had 24 items based on 5-point likert scale. Collected data were analyzed in SPSS software. Results showed that the most important goal of faculty members was publishing a scientific paper, and their least important goal was updating technical information. Also we found that they mostly use internet-based resources to meet their information needs. Accordingly, 57.7% of them find information resources via online search engines (e.g. Google, Yahoo). Also we concluded that there was a significant relationship between English language proficiency, academic rank, and work experience of them and their information- seeking behavior. PMID:27157151

  6. Investigation of Temperature Dynamics in Small and Shallow Reservoirs, Case Study: Lake Binaba, Upper East Region of Ghana

    Directory of Open Access Journals (Sweden)

    Ali Abbasi

    2016-03-01

    Full Text Available An unsteady fully three-dimensional model of Lake Binaba (a shallow small reservoir in semi-arid Upper East Region of Ghana has been developed to simulate its temperature dynamics. The model developed is built on the Reynolds Averaged Navier–Stokes (RANS equations, utilizing the Boussinesq approach. As the results of the model are significantly affected by the physical conditions on the boundaries, allocating appropriate boundary conditions, particularly over a water surface, is essential in simulating the lake’s thermal structure. The thermal effects of incoming short-wave radiation implemented as a heat source term in the temperature equation, while the heat fluxes at the free water surface, which depend on wind speed, air temperature, and atmospheric stability conditions are considered as temperature boundary condition. The model equations were solved using OpenFOAM CFD toolbox. As the flow is completely turbulent, which is affected by the complex boundary conditions, a new heat transfer solver and turbulence model were developed to investigate the spatial and temporal distribution of temperature in small and shallow inland water bodies using improved time-dependent boundary conditions. The computed temperature values were compared with four days of observed field data. Simulated and observed temperature profiles show reasonable agreement where the root mean square error (RMSE over the simulation period ranges from 0.11 to 0.44 °C in temporal temperature profiles with an average value of 0.33 °C. Results indicate that the model is able to simulate the flow variables and the temperature distribution in small inland water bodies with complex bathymetry.

  7. Investigation of Barriers and Factors Affecting the Reverse Logistics of Waste Management Practice: A Case Study in Thailand

    OpenAIRE

    Sumalee Pumpinyo; Vilas Nitivattananon

    2014-01-01

    Economic growth in developing countries accelerated waste generation, and Thailand also is experiencing issues related to increased waste generation and improper waste management. The country’s domestic waste utilization is only 20%–26%. Efficient waste management and increased quantity of waste utilization is possible only by overcoming problems and constraints in reverse logistics (RL) systems in Thailand. To address these issues and constraints, this study aims to focus the investigati...

  8. Investigations in to Ecological Consequences and Threats from Ethnoecological and Ethnobotanical Practices Across Karakorum Mountain Ranges: A Case Study Berberis

    Directory of Open Access Journals (Sweden)

    Tika Khan

    2014-12-01

    Full Text Available Geomorphologically inaccessible mighty mountain ranges of Karakoram, Hindukush, Himalaya and Pamir have been mother sanctuaries for several ecologically attuned civilizations. Modern changes underway across ethnoecological and ethnobotanical settings among these mountain traditional communities have drastically depreciated folk wisdom and ecological equilibrium. Ethno-climatic agencies have threatened several species and Berberis pseudumbellata subsp. gilgitica has become critically endangered. Present study was an attempt to discover ethnobotanical insights and exploration of threatening factors affecting Berberis species. Survey (n=373 revealed that communities use Berberis meeting various purposes including medicinal (92.2%; SE±0.057; 0.409 MT/annum-a, firewood (19.3%; SE±37.375; 6.589 MT/a, commercial (2.41%; SE±1.692; 0.048 MT/a, cultural (2.41%, fodder (16.08%; SE±11.474; 8.724 MT/a, fencing (19.03%; SE±6.895; 3.352 MT/a and grazing (100%; SE±1.035. Data was analyzed using Pearson correlational coefficient, student t-test and descriptive statistical tools. Study exhibits highly significant relationship (p< 0.000 among different age groups, ethnomedicinal uses and conservation status of Berberis.

  9. An empirical investigation on the effects of spiritual leadership components on organizational learning capacity: A case study of Payame Noor University

    Directory of Open Access Journals (Sweden)

    Amir Hossein

    2013-06-01

    Full Text Available This paper presents an empirical investigation on the effects of spiritual leadership components on organizational learning capacity for a case study of Payame Noor University, Iran. The proposed study uses a standard questionnaire for measuring spirituality leadership proposed by Fry (2003 [Fry, L. W. (2003. Toward a theory of spiritual leadership. The leadership quarterly, 14(6, 693-727.] and for measuring the impact of organizational learning capacity, the proposed study uses another questionnaire proposed by Teo et al. (2006 [Teo, H. H., Wang, X., Wei, K. K., Sia, C. L., & Lee, M. K. (2006. Organizational learning capacity and attitude toward complex technological innovations: an empirical study. Journal of the American Society for Information Science and Technology, 57(2, 264-279.]. The results of our survey have indicated that all components of spiritual leadership, except love and altruism as meaningful, influence spirituality leadership, significantly.

  10. An investigation on relationship between CRM and organizational learning through knowledge management: A case study of Tehran travel agency

    Directory of Open Access Journals (Sweden)

    Mirza Hasan Hosseini

    2013-03-01

    Full Text Available Customer relationship management (CRM plays essential role on the success of many business units. CRM integrates necessary data from internal and external sources to assist managers and employees for business development. This paper attempts to analyze relationship between CRM, organizational learning, and knowledge management. Research population includes travel agencies in Tehran, Iran and their manager are considered for the purpose of this study. This research has four variables 1- Successful implementation of KM, 2- Organizational learning, 3- customer orientation, and 4- information share with customers. The preliminary results of this survey indicate that any development of CRM will significantly contribute relative efficiency of this travel agency. The results also indicate that there is a meaningful relationship among components of CRM including organizational learning, and knowledge management in this travel agency.

  11. Salmonella enterica serovar Enteritidis phage type 4 outbreak associated with eggs in a large prison, London 2009: an investigation using cohort and case/non-case study methodology.

    Science.gov (United States)

    Davies, A R; Ruggles, R; Young, Y; Clark, H; Reddell, P; Verlander, N Q; Arnold, A; Maguire, H

    2013-05-01

    In September 2009, an outbreak of Salmonella enterica serovar Enteritidis affected 327 of 1419 inmates at a London prison. We applied a cohort design using aggregated data from the kitchen about portions of food distributed, aligned this with individual food histories from 124 cases (18 confirmed, 106 probable) and deduced the exposures of those remaining well. Results showed that prisoners eating egg cress rolls were 26 times more likely to be ill [risk ratio 25.7, 95% confidence interval (CI) 15.5-42.8, Pfuture gastrointestinal outbreaks in prison settings.

  12. An investigation into the crystallization tendency/kinetics of amorphous active pharmaceutical ingredients: A case study with dipyridamole and cinnarizine.

    Science.gov (United States)

    Baghel, Shrawan; Cathcart, Helen; Redington, Wynette; O'Reilly, Niall J

    2016-07-01

    Amorphous drug formulations have great potential to enhance solubility and thus bioavailability of BCS class II drugs. However, the higher free energy and molecular mobility of the amorphous form drive them towards the crystalline state which makes them unstable. Accurate determination of the crystallization tendency/kinetics is the key to the successful design and development of such systems. In this study, dipyridamole (DPM) and cinnarizine (CNZ) have been selected as model compounds. Thermodynamic fragility (mT) was measured from the heat capacity change at the glass transition temperature (Tg) whereas dynamic fragility (mD) was evaluated using methods based on extrapolation of configurational entropy to zero [Formula: see text] , and heating rate dependence of Tg [Formula: see text] . The mean relaxation time of amorphous drugs was calculated from the Vogel-Tammann-Fulcher (VTF) equation. Furthermore, the correlation between fragility and glass forming ability (GFA) of the model drugs has been established and the relevance of these parameters to crystallization of amorphous drugs is also assessed. Moreover, the crystallization kinetics of model drugs under isothermal conditions has been studied using Johnson-Mehl-Avrami (JMA) approach to determine the Avrami constant 'n' which provides an insight into the mechanism of crystallization. To further probe into the crystallization mechanism, the non-isothermal crystallization kinetics of model systems were also analysed by statistically fitting the crystallization data to 15 different kinetic models and the relevance of model-free kinetic approach has been established. The crystallization mechanism for DPM and CNZ at each extent of transformation has been predicted. The calculated fragility, glass forming ability (GFA) and crystallization kinetics are found to be in good correlation with the stability prediction of amorphous solid dispersions. Thus, this research work involves a multidisciplinary approach to

  13. CT of the hips in the investigation of protrusio acetabuli in Marfan syndrome. A case control study

    International Nuclear Information System (INIS)

    To establish the prevalence of protrusio acetabuli (PA) in adults fulfilling the Ghent criteria for Marfan syndrome (MFS), and in a normal adult population. 105 adults with probable MFS and 107 controls were included. CT of the hips was obtained. A qualitative assessment of PA was performed. A new method for estimating the degree of PA was introduced with measurement of the parameter CWD (circle-wall distance). Results were compared to an alternative method based on MRI [1]. 87 of the study group fulfilled the Ghent criteria of MFS (Ghent positives), and 18 did not (Ghent negatives). PA was diagnosed qualitatively in 74.7% of Ghent positive persons, in 27.8% of Ghent negative persons, and in 3.7% of the controls. CWD was significantly different between the three groups (p < 0.001). A slight but significant gender difference was found in Ghent positive persons only. The alternative method did not differentiate between the groups with respect to PA, but showed a significant difference between genders. PA was found significantly more often in MFS persons than in controls. Our method was found to be robust and highly reproducible, giving a direct measurement of pelvic protrusion irrespective of pelvic shape. (orig.)

  14. CT of the hips in the investigation of protrusio acetabuli in Marfan syndrome. A case control study

    Energy Technology Data Exchange (ETDEWEB)

    Lundby, Rigmor; Smith, Hans-Joergen [University of Oslo, Faculty of Medicine, Oslo (Norway); Oslo University Hospital, Rikshospitalet, Department of Radiology and Nuclear Medicine, Oslo (Norway); Kirkhus, Eva; Hald, John [Oslo University Hospital, Rikshospitalet, Department of Radiology and Nuclear Medicine, Oslo (Norway); Rand-Hendriksen, Svend [University of Oslo, Faculty of Medicine, Oslo (Norway); Sunnaas Rehabilitation Hospital, TRS National Resource Centre for Rare Disorders, Nesoddtangen (Norway); Pripp, Are Hugo [Oslo University Hospital, Biostatistics and Epidemiology Unit, Oslo (Norway)

    2011-07-15

    To establish the prevalence of protrusio acetabuli (PA) in adults fulfilling the Ghent criteria for Marfan syndrome (MFS), and in a normal adult population. 105 adults with probable MFS and 107 controls were included. CT of the hips was obtained. A qualitative assessment of PA was performed. A new method for estimating the degree of PA was introduced with measurement of the parameter CWD (circle-wall distance). Results were compared to an alternative method based on MRI [1]. 87 of the study group fulfilled the Ghent criteria of MFS (Ghent positives), and 18 did not (Ghent negatives). PA was diagnosed qualitatively in 74.7% of Ghent positive persons, in 27.8% of Ghent negative persons, and in 3.7% of the controls. CWD was significantly different between the three groups (p < 0.001). A slight but significant gender difference was found in Ghent positive persons only. The alternative method did not differentiate between the groups with respect to PA, but showed a significant difference between genders. PA was found significantly more often in MFS persons than in controls. Our method was found to be robust and highly reproducible, giving a direct measurement of pelvic protrusion irrespective of pelvic shape. (orig.)

  15. Investigating the effect of Individual Characteristics on Marketing Intelligence in Organization (Case Study: Tehran Scientific Centers and Manufacturing Companies

    Directory of Open Access Journals (Sweden)

    M. Fariabi

    2011-01-01

    Full Text Available Nowadays, organizations are facing with plenty of environmental changes like never before. The changes take place promptly, that if organizations do not prepare themselves for facing with such changes their survival will be threatened. One of the very new tools that help organizations to reach a worthy position is the use of marketing intelligence. As there is no comprehensive conception of marketing intelligence in Iran, it is assumed as the synonymous of marketing information and market researches in many several books as well as scientific societies of our country. Therefore, the main purposes of this study are to develop the marketing intelligence theories and to specify effective individual characteristics on marketing intelligence in order to accomplish a stable competitive advantage. Accordingly by reviewing the literature review, a set of indicators relevant to each of the effective individual factors on marketing intelligence was collected, also the data was collected by questionnaire and interview. It is noteworthy that both qualitative and quantitative methodology were applied for the purpose of data analysis. The result of the research indicates that individual characteristics including character, creativity, motivation, intelligence, and organizational position are effective factors for making marketing intelligence.

  16. Investigating the effect of Individual Characteristics on Marketing Intelligence in Organization (Case Study: Tehran Scientific Centers and Manufacturing Companies

    Directory of Open Access Journals (Sweden)

    MohammadRahim Faryabi

    2011-07-01

    Nowadays, organizations are facing with plenty of environmental changes like never before. The changes take place promptly, that if organizations do not prepare themselves for facing with such changes their survival will be threatened. One of the very new tools that help organizations to reach a worthy position is the use of marketing intelligence. As there is no comprehensive conception of marketing intelligence in Iran, it is assumed as the synonymous of marketing information and market researches in many several books as well as scientific societies of our country. Therefore, the main purposes of this study are to develop the marketing intelligence theories and to specify effective individual characteristics on marketing intelligence in order to accomplish a stable competitive advantage. Accordingly by reviewing the literature review, a set of indicators relevant to each of the effective individual factors on marketing intelligence was collected, also the data was collected by questionnaire and interview. It is noteworthy that both qualitative and quantitative methodology were applied for the purpose of data analysis. The result of the research indicates that individual characteristics including character, creativity, motivation, intelligence, and organizational position are effective factors for making marketing intelligence.

  17. Investigation of Energy Use Pattern and Emission Discharge in Nigeria: A Case Study of South West Zone

    Directory of Open Access Journals (Sweden)

    Olufemi Abimbola

    2015-01-01

    Full Text Available Electricity demand has increased with population growth, industrialization and civilization. Most householders are barely conscious of the conservative measures for available limited supply, while the environmental impact has rarely been taken into cognizance by consumers. The study examines end-users attitude to energy consumption in Nigeria based on four scenarios. Gaseous emissions data obtained from prepaid and post-paid metering systems usage in low-income and high-income housing types were analyzed. Results obtained indicate strong relationship between energy use and emissions with significantly different emission generation. About 38% and 23% reduction in global warming and acidification potential is achieved by a switch to prepaid meters for both income earners. Post-paid low-income earners utilized the highest energy (59.8kW/hr while the prepaid high-income earners had the minimum (31.1kW/hr. Energy use and greenhouse gas emissions from both earners followed similar trend. Prepaid metering system usage improves energy consumption, thereby offsetting global warming and acidification impacts.

  18. Investigating the Impacts of Intraregional Trade and Aid on Per Capita Income in Africa: Case Study of the ECOWAS

    Directory of Open Access Journals (Sweden)

    Assandé Désiré Adom

    2012-01-01

    Full Text Available In the past 50 years, a striking stylized fact has been the downward—or flat—trend of intra-African trade as a share of Africa’s total trade, while official development assistance (ODA has experienced a noticeable expansion. During the same period, economic growth performances have not been consistent and robust enough to put a dent in the poverty level across the African continent in general and the Economic Community of West African States (ECOWAS in particular. Using a two-stage least square (TSLS estimation technique, this paper finds out that intra-ECOWAS trade stimulates per capita income growth substantially more than foreign aid, which rather constitutes an impediment to that growth in most specifications. Additionally, comparable results are obtained when the scope of the study is expanded to include trade of ECOWAS members with the rest of the world. As a result, it becomes appropriate to suggest policy recommendations encouraging increased cooperation among member states in an attempt to (i expand and build new cross-states infrastructures, aimed at boosting communications and telecommunications networks, (ii accelerate the trade facilitation process by addressing administrative red tapes that balloon both transaction costs and delays in the flows of goods across borders, seaports, and airports, and (iii develop and diversify the industrial base in member states.

  19. Theoretical investigation and mathematical modelling of a wind energy system case study for Mediterranean and Red Sea

    Energy Technology Data Exchange (ETDEWEB)

    Shata, Ahmed Shata Ahmed

    2008-06-26

    Fossil fuel is getting more and more expensive every year, and is not readily available in some remote locations. Today, wind power can be harnessed to provide some or all of the power for many useful tasks such as generating electricity, pumping water and heating a house or barn. Egypt has two coastal areas that show significant promise for wind energy exploitation; the north coast on the Mediterranean Sea and the east coast on the Red Sea. The wind energy is utilized along the coast of Mediterranean Sea in Egypt on few occasions, while from national programs for wind energy utilization in Egypt, at the Red Sea coast, the master plan calls for 600 MW which are expected to be achieved by the year 2005. The contribution of fossil fuels (oil and natural gas) to electricity production in Egypt accounts for about 79% of total production, while 21% is hydropower. The demand is expected to grow rapidly to meet the large requirements of future projects. Studies showed that there is an additional need of annual electricity generation capacity around 1000 MW/year up to 2017 [14]. The purpose of this thesis is to present a new analytical method for the calculation of the wind energy potential available along the north coast of the Mediterranean Sea and the east coast of Red Sea in Egypt and moreover, it estimates the possible electrical power generated by large wind turbines and the expected cost in Euro cent/kWh for the power level of 2000 kW. It is hoped that the data analysis will help to identify good sites in Egypt for new wind turbine installations. This evaluation is hoped to trigger the use of large wind turbines at the selected sites along the coasts of Mediterranean Sea and Red Sea in Egypt. (orig.)

  20. Human Papillomavirus Antibodies and Future Risk of Anogenital Cancer : A Nested Case-Control Study in the European Prospective Investigation Into Cancer and Nutrition Study

    NARCIS (Netherlands)

    Kreimer, Aimee R.; Brennan, Paul; Kuhs, Krystle A. Lang; Waterboer, Tim; Clifford, Gary; Franceschi, Silvia; Michel, Angelika; Willhauck-Fleckenstein, Martina; Riboli, Elio; Castellsague, Xavier; Hildesheim, Allan; Fortner, Renee Turzanski; Kaaks, Rudolf; Palli, Domenico; Ljuslinder, Ingrid; Panico, Salvatore; Clavel-Chapelon, Francoise; Boutron-Ruault, Marie-Christine; Mesrine, Sylvie; Trichopoulou, Antonia; Lagiou, Pagona; Trichopoulos, Dimitrios; Peeters, Petra H.; Cross, Amanda J.; Bueno-de-Mesquita, H. Bas; Vineis, Paolo; Larranaga, Nerea; Pala, Valeria; Sanchez, Maria-Jose; Navarro, Carmen; Barricarte, Aurelio; Tumino, Rosario; Khaw, Kay-Tee; Wareham, Nicholas; Boeing, Heiner; Steffen, Annika; Travis, Ruth C.; Ramon Quiros, J.; Weiderpass, Elisabete; Pawlita, Michael; Johansson, Mattias

    2015-01-01

    Purpose Human papillomavirus (HPV) type 16 (HPV16) causes cancer at several anatomic sites. In the European Prospective Investigation Into Cancer and Nutrition study, HPV16 E6 seropositivity was present more than 10 years before oropharyngeal cancer diagnosis and was nearly absent in controls. The c

  1. Final report on case studies

    DEFF Research Database (Denmark)

    Ljungberg, Daniel; McKelvey, Maureen; Lassen, Astrid Heidemann

    2012-01-01

    Case study as a research design means investigating a single or multiple instance(s) or setting(s) (i.e. a case) and its entire context to explain a phenomenon and its processes. This is achieved through detailed understanding, usually comprised of multiple sources of information. In this way, ca...

  2. Investigation on Quality of Service Provided by Third Tier Internet Serrvice Providers in Nigeria: Akure Cybercafés as case study

    Directory of Open Access Journals (Sweden)

    Mr. Jide Julius Popoola

    2009-11-01

    Full Text Available This paper presents an investigation into the quality of service (QoS of cybercafés networks in Nigeria using five different cybercafés in Akure metropolis as a case study. The study was carried out in three stages. In the first stage, Distributed Internet Traffic Generator (D-ITG V. 2.4 was used to measure the QoS metrics such as packet loss, average jitter, bandwidth and delay standard deviation on the five cybercafés networks investigated. The second stage, involves the administering of questionnaires to users of studied cybercafés in order to obtain primary data on some of the users’ QoS metrics such as reliability and efficiency of the networks. The final stage involves visitation to the cybercafés considered to obtain onsite data on specifications of computers using for browsing in the cybercafés. The result of the study shows that all the networks considered were inefficiency, congested and unprotected. It was also found from the study that, there is direct correlation between the bandwidth, number of terminals and the efficiency of the network. The paper was concluded with suggestions on how to improve the QoS of internet cybercafés in Nigeria in order to enhance teaching and research through internet facility in the country.

  3. Supporting cognitive engagement in a learning-by-doing learning environment: Case studies of participant engagement and social configurations in Kitchen Science Investigators

    Science.gov (United States)

    Gardner, Christina M.

    Learning-by-doing learning environments support a wealth of physical engagement in activities. However, there is also a lot of variability in what participants learn in each enactment of these types of environments. Therefore, it is not always clear how participants are learning in these environments. In order to design technologies to support learning in these environments, we must have a greater understanding of how participants engage in learning activities, their goals for their engagement, and the types of help they need to cognitively engage in learning activities. To gain a greater understanding of participant engagement and factors and circumstances that promote and inhibit engagement, this dissertation explores and answers several questions: What are the types of interactions and experiences that promote and /or inhibit learning and engagement in learning-by-doing learning environments? What are the types of configurations that afford or inhibit these interactions and experiences in learning-by-doing learning environments? I explore answers to these questions through the context of two enactments of Kitchen Science Investigators (KSI), a learning-by-doing learning environment where middle-school aged children learn science through cooking from customizing recipes to their own taste and texture preferences. In small groups, they investigate effects of ingredients through the design of cooking and science experiments, through which they experience and learn about chemical, biological, and physical science phenomena and concepts (Clegg, Gardner, Williams, & Kolodner, 2006). The research reported in this dissertation sheds light on the different ways participant engagement promotes and/or inhibits cognitive engagement in by learning-by-doing learning environments through two case studies. It also provides detailed descriptions of the circumstances (social, material, and physical configurations) that promote and/or inhibit participant engagement in these

  4. Quality and clinical supply considerations of Paediatric Investigation Plans for IV preparations-A case study with the FP7 CloSed project.

    Science.gov (United States)

    Hanning, Sara M; Orlu Gul, Mine; Winslade, Jackie; Baarslag, Manuel A; Neubert, Antje; Tuleu, Catherine

    2016-09-25

    A Paediatric Investigation Plan (PIP) is a development plan that aims to ensure that sufficient data are obtained through studies in paediatrics to support the generation of marketing authorisation of medicines for children. This paper highlights some practical considerations and challenges with respect to PIP submissions and paediatric clinical trials during the pharmaceutical development phase, using the FP7-funded Clonidine for Sedation of Paediatric Patients in the Intensive Care Unit (CloSed) project as a case study. Examples discussed include challenges and considerations regarding formulation development, blinding and randomisation, product labelling and shipment and clinical trial requirements versus requirements for marketing authorisation. A significant quantity of information is required for PIP submissions and it is hoped that future applicants may benefit from an insight into some critical considerations and challenges faced in the CloSed project. PMID:27113865

  5. Quality and clinical supply considerations of Paediatric Investigation Plans for IV preparations-A case study with the FP7 CloSed project.

    Science.gov (United States)

    Hanning, Sara M; Orlu Gul, Mine; Winslade, Jackie; Baarslag, Manuel A; Neubert, Antje; Tuleu, Catherine

    2016-09-25

    A Paediatric Investigation Plan (PIP) is a development plan that aims to ensure that sufficient data are obtained through studies in paediatrics to support the generation of marketing authorisation of medicines for children. This paper highlights some practical considerations and challenges with respect to PIP submissions and paediatric clinical trials during the pharmaceutical development phase, using the FP7-funded Clonidine for Sedation of Paediatric Patients in the Intensive Care Unit (CloSed) project as a case study. Examples discussed include challenges and considerations regarding formulation development, blinding and randomisation, product labelling and shipment and clinical trial requirements versus requirements for marketing authorisation. A significant quantity of information is required for PIP submissions and it is hoped that future applicants may benefit from an insight into some critical considerations and challenges faced in the CloSed project.

  6. The study of chromosome aberration yield in human lymphocytes as an indicator of radiation dose. 5. A review of cases investigated: 1974

    International Nuclear Information System (INIS)

    Results from cytogenetic investigations into 28 cases of suspected overexposure to radiation are reviewed. This report is a sequel to NRPB-R5, R10 and R23 which contained data on 141 studies. Results from all 169 investigations have been pooled for general analysis. Brief accounts are given in an appendix of the circumstances behind the past year's 28 investigations and where possible physical estimates of dose have been included for comparison. Dose response studies have been completed for 250 kV X-rays delivered at 100 rads/min and for two dose rates of cobalt-60 γ radiation at 50 rads/min and 18 rads/hr. The data have been fitted to a quadratic function of the form Y = αD + βS2 and values for the coefficients α and β are given for the three curves. The lower limits of detection with cytogenetic dosimetry are equivalent whole body doses of 4 rads for X-rays and 10 rads γ radiation. Several weeks may elapse between exposure and blood sampling without detriment to the dose estimate. (author)

  7. Prediction of hidden Au and Cu-Ni ores from depleted mines in Northwestern China: four case studies of integrated geological and geophysical investigations

    Science.gov (United States)

    Shen, Ping; Shen, Yuanchao; Liu, Tiebing; Li, Guangming; Zeng, Qingdong

    2008-07-01

    Integrated geological and geophysical investigations were carried out in 26 active mines in Northwestern China during the period 2001-2006 to explore for hidden extensions of known ore bodies and to search for new mineralization. This paper presents four case studies from northwest China: the Kuoerzhenkuoa volcanogenic hydrothermal gold deposit, the Nanjinshan breccia-associated gold deposit, the Duolanasayi deposit, associated with a ductile-shear zone, and the Hulu magmatic Cu-Ni sulfide deposit. In these studies, detailed mine-scale geological studies were carried out to determine the location and controls on ore formation. Based on these investigations and a review of previous exploration data, genetic models for the deposits were evaluated, and specific new targets were generated. These target areas were tested with surface geophysical surveys using the Stratagem EH4 system, a hybrid-source magnetotellurics (MT) method. Analysis of the data obtained in the surveys identified geophysical target anomalies that were subsequently drilled. Many of these test holes demonstrate the presence of Au and Cu-Ni mineralization. Evaluation of the geological models was crucial in developing conceptual targets as a basis for surface geophysical surveys. These models established the most likely target areas where Au and Cu-Ni mineralization could occur, but they did not define the limits or the geometries of the mineralized zones. Hybrid MT surveys played an important role in defining the location of buried mineralized systems and in testing the validity of the conceptual targets. The resistivity cross-sections obtained by imaging the MT data established the boundaries and geometries of the host rocks, including the distribution of lithology, structures, alteration, and mineralization. The four case studies in this paper show how this integrated geological and geophysical approach was used successfully to discover hidden mineral deposits.

  8. The study of chromosome aberration yield in human lymphocytes as an indicator of radiation dose. 2. A review of cases investigated: 1970-71

    International Nuclear Information System (INIS)

    The results of cytogenetic investigations into forty-one cases of suspected over exposure to radiation are reviewed. Where possible, comparisons have been made with conventional film badge dosimetry and accident reconstruction investigations. In many cases chromosome dosimetry gave highly comparable results, whilst in cases where no badges were worn or their readings were suspect then very credible dose estimates were obtained. The demonstration of undamaged chromosomes proved most reassuring in instances of zero or trivial doses. Thus it is concluded that chromosome dosimetry is now sufficiently well developed to form a valuable and practicable technique in radiological protection. (author)

  9. Application of Tracer Techniques in Studies of Sediment Transport in Vietnam [Case Study: Radiotracer Applications for Investigation of Bedload Transport of Sediments

    International Nuclear Information System (INIS)

    Vietnam suffers greatly from sedimentation. Though a large amount of money is spent annually on dredging, 10.000 draught weight vessels can not enter or leave the ports. For these vessels or heavier ones a part of their cargo must be transferred at the open sea before they can enter the port. Efforts have been made by both national and foreign organizations to understand the sedimentation processes in estuarine areas under hydrometeorological conditions, but information given by mathematical models was not good enough, especially in the case of lack of a reliable database that would result from a systematic hydraulic and sedimentary survey. In order to obtain reliable data on the dynamic of sediment transport and to verify the modeling approach in the areas with such a complicated hydraulic conditions, the radiotracer techniques have been developed and employed since 1991. The qualitative and quantitative information on suspended sediment movement and bedload transport in Haiphong harbor area under the effect of northeast monsoon and southeast monsoon was obtained by using Sc- 46 and Ir-192 labelled glasses as radioactive tracers. The influence of dredging materials on sedimentation rate in Haiphong access channel at two dumping sites was estimated by radioactive tracer technique. Using the case of the Haiphong port, this work describes technical aspects in the use of tracer techniques to study sediment transport, both suspension and bedload, in the coastal and estuarine environment. Some results are then briefly presented

  10. An empirical study to investigate the effects of thinking styles on emotional intelligence: A case study of Jihad Agriculture Organization of east Azerbaijan province

    Directory of Open Access Journals (Sweden)

    Habibeh Ayagh

    2013-05-01

    Full Text Available An empirical study to investigate the effects of thinking styles on emotional intelligence among employees of agriculture industry in east Azerbaijan province. The proposed study uses a standard thinking style questionnaire originally developed by Sternberg and Wagner (1992 [Sternberg, R. J., & Wagner, R. K. (1992. Thinking styles inventory. Unpublished test, Yale University]. There are 716 employees working for this agriculture-based unit and the study uses random sampling technique and chooses 255 employees for this study. Cronbach alpha has been used to verify the overall questionnaire and different tests such as Kolmogorov-Smirnov and Pearson correlation test are used to examine different hypotheses of this survey. The results indicate there is positive and meaningful relationship between thinking style and emotional intelligence. We can also confirm that four thinking style’s components including functions, levels, scope and learning have meaningful impact on emotional intelligence when the level of significance is five or even one percent. However, forms did not have any meaningful impact on emotional intelligence.

  11. Termination: A Case Study.

    Science.gov (United States)

    Friedberg, Ahron L

    2015-12-01

    In this article I posit and examine certain criteria and qualities for ending an analysis. The case study describes the end phase of a four-year psychoanalysis in which the patient's decision to move to another area forced the end of his analysis. We continued to explore and work through his core neurotic conflicts that included issues of competitive rivalry, dominance and submission, control, and anxiety about birth and death. A shift in the transference from me as a negative father to me as a supportive but competitive older brother was also examined in the context of ending treatment as well as other aspects of the transference. In addition, we analyzed the meaning of his ending treatment based on an extra-analytic circumstance. In discussing this phase of treatment, the definition and history of the term "termination" and its connotations are reviewed. Various criteria for completing an analysis are examined, and technical observations about this phase of treatment are investigated. It was found that while a significant shift in the transference occurred in this phase of the patient's analysis, conflicts related to the transference were not "resolved" in the classical sense. Terminating treatment was considered as a practical matter in which the patient's autonomy and sense of choice were respected and analyzed. PMID:26583444

  12. Use of a total traffic count metric to investigate the impact of roadways on asthma severity: a case-control study

    Directory of Open Access Journals (Sweden)

    deVos Annemarie JBM

    2011-06-01

    Full Text Available Abstract Background This study had two principal objectives: (i to investigate the relationship between asthma severity and proximity to major roadways in Perth, Western Australia; (ii to demonstrate a more accurate method of exposure assessment for traffic pollutants using an innovative GIS-based measure that fully integrates all traffic densities around subject residences. Methods We conducted a spatial case-control study, in which 'cases' were defined as individuals aged under 19 years of age with more severe asthma (defined here as two or more emergency department contacts with asthma in a defined 5-year period versus age- and gender-matched 'controls' with less severe asthma (defined here as one emergency department contact for asthma. Traffic exposures were measured using a GIS-based approach to determine the lengths of the roads falling within a buffer area, and then multiplying them by their respective traffic counts. Results We examined the spatial relationship between emergency department contacts for asthma at three different buffer sizes: 50 metres, 100 metres and 150 metres. No effect was noted for the 50 metre buffer (OR = 1.07; 95% CI: 0.91-1.26, but elevated odds ratios were observed with for crude (unadjusted estimates OR = 1.21 (95% CI: 1.00-1.46 for 100 metre buffers and OR = 1.25 (95% CI: 1.02-1.54 for 150 metre buffers. For adjusted risk estimates, only the 150 metre buffer yielded a statistically significant finding (OR = 1.24; 95% CI:1.00-1.52. Conclusions Our study revealed a significant 24% increase in the risk of experiencing multiple emergency department contacts for asthma for every log-unit of traffic exposure. This study provides support for the hypothesis that traffic related air pollution increases the frequency of health service contacts for asthma. This study used advanced GIS techniques to establish traffic-weighted buffer zones around the geocoded residential location of subjects to provide an accurate

  13. Investigating Heavy Metal Pollution in Mining Brownfield and Its Policy Implications: A Case Study of the Bayan Obo Rare Earth Mine, Inner Mongolia, China

    Science.gov (United States)

    Pan, Yuxue; Li, Haitao

    2016-04-01

    The rapid urbanization of China and associated demand for land resources necessitates remediation, redevelopment, and reclamation of contaminated soil. Before these measures are taken, a basic investigation and inventory of heavy metal (HM) pollution levels in contaminated soil is necessary for establishing and implementing the redevelopment plan. In the present study, to identify the policy implications of inventorying and mapping HM pollution of soil in brownfields throughout China, the Bayan Obo giant rare earth element (REE)-Nb-Fe ore deposit of Baotou in Inner Mongolia, China, which is the largest REE mineral deposit in the world, was taken as a case study. Soil samples from 24 sites in Bayan Obo mining area (MA) and 76 sites in mine tailing area (TA) were collected for determining contents of soil HMs (Cr, Cd, Pb, Cu, and Zn). The results showed that the average concentrations of Cr, Cd, Pb, Cu, and Zn in both MA and TA were all higher than their corresponding background values for Inner Mongolia but lower than the Class II criteria of the National Soil Quality Standards of China (GB 15618—1995). Enrichment factor (EF) analysis of the soil samples indicated that the soil in the brownfield sites was highly enriched with Cr, Cd, Pb, Cu, and Zn compared to the corresponding background values. In MA, the EF for Cd was the highest among the studied elements, while in TA, the EF for Cr (3.45) was the highest, closely followed by the EF for Cd (3.34). The potential ecological risk index (RI) indicated a moderate potential ecological risk from the studied HMs in MA and a low potential ecological risk in TA, and the results of RI also suggested that the soil was most heavily polluted by Cd. According to the spatial distribution maps of HM, contamination hot-spots were primarily located near mining-related high-pollution plants. Based on the results, policy recommendations are proposed related to brownfield management in urban planning.

  14. Using Case Studies To Teach Science.

    Science.gov (United States)

    Gabel, Connie

    Using case studies in science instruction develops problem solving and enhances listening and cooperative learning skills. Unlike other disciplines such as law and medicine, the case study method is rarely used in science education to enrich the curriculum. This study investigates the use of content-based case studies as a means of developing…

  15. A case study in the New York Drumlin Field, an investigation using microsedimentology, resulting in the refinement of a theory of drumlin formation

    Science.gov (United States)

    Menzies, John; Hess, Dale P.; Rice, Jessey M.; Wagner, Kaleb G.; Ravier, Edouard

    2016-06-01

    The formation of drumlins remains a major enigma. It is accepted that drumlins form under active temperate ice most likely within a soft sediment deforming bed at ephemeral 'sticky points'. These 'sticky points' likely lead to the causative mechanism around which sediment nucleation occurs. The critical question is under what conditions and where and how do 'sticky spots' form. A comparative investigation of a drumlin and mega-flute in the New York Drumlin Field, as a case study, demonstrates that rheological and sedimentological tills from these different forms are similar. It is not, therefore, rheological change alone that must account for drumlin shape and form but likely the advective subglacial basal sediment flux rate at the ice bed. The rate of sediment motion between the upper interface at the ice-sediment bed boundary, and the lower immobile sediment at depth is crucial. At the lower décollement between the mobile and immobile sediment units, within the deforming sediment package, proto-drumlin nucleation is likely to occur and develop into a streamlined form. The trigger mechanism for such a perturbation is a derivative of sediment rheology and sediment flux rate driven by the overlying ice stresses. Recent evidence from Antarctica lends credence to this new hypothesis that can be related to all drumlins formed under temperate, soft sediment deforming bed conditions.

  16. 40Ar- 39Ar dating of detrital muscovite in provenance investigations: a case study from the Adelaide Rift Complex, South Australia

    Science.gov (United States)

    Haines, Peter W.; Turner, Simon P.; Kelley, Simon P.; Wartho, Jo-Anne; Sherlock, Sarah C.

    2004-11-01

    Detrital zircon ages are commonly used to investigate sediment provenance and supply routes. Here, we explore the advantages of employing multiple, complimentary techniques via a case study of the Neoproterozoic and Cambrian of the Adelaide Rift Complex, South Australia. Detrital muscovite Ar-Ar ages are presented from stratigraphic units, or equivalents, that have previously been the subject of U-Pb detrital zircon dating, and, in some cases, whole-rock Sm-Nd isotope studies. The zircon age ranges and whole-rock Sm-Nd isotope data suggest that early Neoproterozoic sediments from near the base of the Adelaide Rift Complex comprise a mixture of detritus derived from the adjacent Gawler Craton (Palaeoproterozoic to earliest Mesoproterozoic) and overlying Gairdner flood basalts. In contrast, detrital muscovites from this level have a broad scatter of Mesoproterozoic infrared (IR) laser total fusion Ar-Ar ages, while UV laser traverses indicate that the age spread reflects partial resetting by multiple heating events, rather than a mixture of sources. Younger Neoproterozoic sediments document replacement of the Gawler Craton by the more distant Musgrave and/or Albany-Fraser Orogens as the main provenance. The Cambrian Kanmantoo Group marks an abrupt change in depositional style and a new sediment source. The Kanmantoo Group have older Nd model ages than underlying strata, yet are dominated by near to deposition-aged (˜500-650 Ma) detrital zircons and muscovites, suggesting rapid cooling and exhumation of a tectonically active provenance region. Although this source remains uncertain, evidence points towards the distant Pan-African orogenic belts. Deposition in the Adelaide Rift Complex was terminated in the late Early Cambrian by the Delamerian Orogeny, and the results of previous detrital mineral dating studies from the Lachlan Fold Belt to the east are consistent with at least partial derivation of these sediments from reworked upper Adelaide Rift Complex (Kanmantoo

  17. X-ray fluorescence investigation of gilded and enamelled silver: The case study of four medieval processional crosses from central Italy

    International Nuclear Information System (INIS)

    The presence of multilayered structures is common in such cultural artefacts as paintings, corroded metals, objects that underwent a whatever form of surface qualification. One of the most usual and complete ways to investigate such structures is observing a cross section, which requires sampling. There are however situations where at least part of the stratigraphic information can be derived non-destructively: the literature shows that X-ray fluorescence (XRF) has frequently been used, in recent years, for this purpose, with special regard to paintings and gilded metals. Aim of this paper is to further explore the suitability of XRF-based techniques to characterise multilayered structures. This is achieved by introducing improvements, with respect to previous works, in both equipment and data processing. The method, that has been developed for gilded and enamelled silver artefacts, relies on optimum excitation conditions provided for silver and on the relationship existing between the ratio AgKα/AgKβ of its fluorescence lines and the gilding thickness itself. The coating (gilding or enamel) thickness is derived by verifying the condition CKα,Ag = CKβ,Ag, where CKα,Ag and CKβ,Ag are the mass fractions of silver calculated on the lines AgKα and AgKβ, respectively. The calculations are carried out by PyMCA, a Fundamental Parameters code that implements the analysis of multilayered samples. As a case study we investigated in situ the four processional crosses of Borbona, Sant'Elpidio, Rosciolo and Forcella, made of a wood core with attached gilt and embossed silver sheets and enamelled silver plates. The analyses allowed to distinguish ancient restorations from original parts, to characterise the enamels and find their composition consistent with the dates of manufacturing and, as regards the cross of Rosciolo, to hypothesize the contribution of different “hands” in its manufacturing. - Highlights: ► We discuss a non-destructive XRF method for the

  18. X-ray fluorescence investigation of gilded and enamelled silver: The case study of four medieval processional crosses from central Italy

    Energy Technology Data Exchange (ETDEWEB)

    Ferretti, Marco, E-mail: marco.ferretti@itabc.cnr.it [CNR, Istituto per le Tecnologie Applicate ai Beni Culturali, AdR RM1, Via Salaria km 29.300, 00016 Montelibretti (Roma) (Italy); Polese, Claudia, E-mail: claudia.polese87@hotmail.it [Dip. di Chimica, Università di Roma “Sapienza,” Piazzale Aldo Moro 5, 00185 Roma (Italy); Roldán García, Clodoaldo, E-mail: Clodoaldo.Roldan@uv.es [Instituto de Ciencia de Materiales, Parc Cientific Universidad de Valencia, C/Catedrático José Beltrán 2, 46980 Paterna (Valencia) (Spain)

    2013-05-01

    The presence of multilayered structures is common in such cultural artefacts as paintings, corroded metals, objects that underwent a whatever form of surface qualification. One of the most usual and complete ways to investigate such structures is observing a cross section, which requires sampling. There are however situations where at least part of the stratigraphic information can be derived non-destructively: the literature shows that X-ray fluorescence (XRF) has frequently been used, in recent years, for this purpose, with special regard to paintings and gilded metals. Aim of this paper is to further explore the suitability of XRF-based techniques to characterise multilayered structures. This is achieved by introducing improvements, with respect to previous works, in both equipment and data processing. The method, that has been developed for gilded and enamelled silver artefacts, relies on optimum excitation conditions provided for silver and on the relationship existing between the ratio AgKα/AgKβ of its fluorescence lines and the gilding thickness itself. The coating (gilding or enamel) thickness is derived by verifying the condition C{sub Kα,Ag} = C{sub Kβ,Ag}, where C{sub Kα,Ag} and C{sub Kβ,Ag} are the mass fractions of silver calculated on the lines AgKα and AgKβ, respectively. The calculations are carried out by PyMCA, a Fundamental Parameters code that implements the analysis of multilayered samples. As a case study we investigated in situ the four processional crosses of Borbona, Sant'Elpidio, Rosciolo and Forcella, made of a wood core with attached gilt and embossed silver sheets and enamelled silver plates. The analyses allowed to distinguish ancient restorations from original parts, to characterise the enamels and find their composition consistent with the dates of manufacturing and, as regards the cross of Rosciolo, to hypothesize the contribution of different “hands” in its manufacturing. - Highlights: ► We discuss a non

  19. Case Studies in Biology.

    Science.gov (United States)

    Zeakes, Samuel J.

    1989-01-01

    A case study writing exercise used in a course on parasitology was found to be a powerful learning experience for students because it involved discipline-based technical writing and terminology, brought the students in as evaluators, applied current learning, caused interaction among all students, and simulated real professional activities. (MSE)

  20. : Case studies: France

    OpenAIRE

    Bonerandi, Emmanuelle; Santamaria, Frédéric

    2005-01-01

    Case studies on territorial governance : urban region of Lyon (France) and the "Pays" policy (France) in the framework of the ESPON 2.3.2 project Études de cas sur la gouvernance territoriale : région urbaine de Lyon et politique des pays

  1. Rotordynamic Stability Case Studies

    OpenAIRE

    Choudhury Pranabesh

    2004-01-01

    In this article case studies are presented involving rotordynamic instability of modern high-speed turbomachinery relating the field data to analytical methods. The studies include oil seal related field problems, instability caused by aerodynamic cross-coupling in high-pressure, high-speed compressors, and hydrodynamic bearing instability resulting in subsynchronous vibration of a high-speed turbocharger. It has been shown that the analytical tools not only help in problem diagnostics, bu...

  2. An Investigation into International Business Collaboration in Higher Education Organisations: A Case Study of International Partnerships in Four UK Leading Universities

    Science.gov (United States)

    Ayoubi, Rami M.; Al-Habaibeh, Amin

    2006-01-01

    Purpose: The purpose of this paper is to develop a comparative analysis of the main objectives of international institutional partnerships in four UK leading universities. Based on the presented case studies, the paper outlines a model for objectives and implementation of international partnership. Design/methodology/approach: Using a multiple…

  3. Orinoco River Suspended Sediment Studies Using 99mTc - Venezuela [Case Study: Radiotracer Applications for Investigation of Suspended Sediment Transport

    International Nuclear Information System (INIS)

    In April 2006, under the IAEA TC project VEN/8/019: ''Management of Sediments throughout the Navigation Channel of the Orinoco River'' radiotracer studies were performed in Orinoco River, Venezuela, in the stretch Guarguapo-Barrancas-Ya Ya, in order to evaluate bottom and suspended sediment transport. The objective of the former study was related to the choice of dumping site for the dredged material in the ship channels. The main objective of the latter was to study the behavior of fine sediment in suspension: advection velocity, dispersion coefficient, sedimentation rate (SR) and dilution, taking into account that the fine sediment is the main carrier of heavy metals and other pollutants in the water environment. The Orinoco River basin is, nowadays, experiencing a fast industrial development with many industries being installed in the river margins and having outfalls discharging into the watercourse. In relation to the suspended sediment study, two sub-superficial injections of mud labelled with 99mTc were performed in the points PS-1 and PS-2.The initial activities used during the injections were respectively, 2.1 and 1.6 Ci (78 and 59 GBq). The detection was performed by a boat with two scintillation detectors placed at 1.5 m (Detector 1) and 0.5 m (Detector 2) below the water surface

  4. Corporate Governance. Case Studies

    OpenAIRE

    Manuel, Eduardo

    2007-01-01

    This paper pretends to do a theoretical approach of Corporate Governance, having as support some case studies about companies like Coca-Cola, Nokia, Microsoft, and Amazon.com. The methodology adopted for this work is based in information from these companies available in their websites and annual reports. I concluded that both companies show the corporate governance components according to their core business and their environmental business.

  5. Case study - Czechoslovakia

    International Nuclear Information System (INIS)

    In the lecture Case Study - Czechoslovakia with the sub-title 'Unified System of Personnel Preparation for Nuclear Programme in Czechoslovakia' the actual status and the current experience of NPP personnel training and preparation in Czechoslovakia are introduced. The above mentioned training system is presented and demonstrated by the story of a proxy person who is going to become shift engineer in a nuclear power plant in Czechoslovakia. (orig./HP)

  6. Case Studies - Cervical Cancer

    Centers for Disease Control (CDC) Podcasts

    2010-10-15

    Dr. Alan Waxman, a professor of obstetrics and gynecology at the University of New Mexico and chair of the American College of Obstetricians and Gynecologists (ACOG) committee for the underserved, talks about several case studies for cervical cancer screening and management.  Created: 10/15/2010 by National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP), Division of Cancer Prevention and Control (DCPC).   Date Released: 6/9/2010.

  7. On the investigation of the performances of a DEM-based hydrogeomorphic floodplain identification method in a large urbanized river basin: the Tiber river case study in Italy

    Science.gov (United States)

    Nardi, Fernando; Biscarini, Chiara; Di Francesco, Silvia; Manciola, Piergiorgio

    2013-04-01

    consequently identified as those river buffers, draining towards the channel, with an elevation that is less than the maximum flow depth of the corresponding outlet. Keeping in mind that this hydrogeomorhic model performances are strictly related to the quality and properties of the input DEM and that the intent of this kind of methodology is not to substitute standard flood modeling and mapping methods, in this work the performances of this approach are qualitatively evaluated by comparing results with standard flood maps. The Tiber river basin was selected as case study, one of the main river basins in Italy covering a drainage area of approximately 17.000 km2. This comparison is interesting for understanding the performance of the model in a large and complex domain where the impact of the urbanization matrix is significant. Results of this investigation confirm the potential of such DEM-based floodplain mapping models for providing a fast timely homogeneous and continuous inundation scenario to urban planners and decision makers, but also the drawbacks of using such methodology where the humans are significantly and rapidly modifying the surface properties.

  8. Investigation of casing inspection through tubing with pulsed eddy current

    Science.gov (United States)

    Fu, Yuewen; Yu, Runqiao; Peng, Xuewen; Ren, Shangkun

    2012-12-01

    Corrosion and cracks of casing string in oil wells is a serious problem on which little research has been done when inspecting casing through tubing. In this study, inspecting casing through tubing with pulsed eddy current is investigated. Longitudinal and transverse probes are centred inside the tubing to detect wall thinnings and cracks in casing. A time slice of induced voltage in the receiving coil of the probe is used as the feature to recognise defects. The experimental results show that large area wall thinnings and long cracks in casing are detected successfully through the tubing with appropriate inspection parameters. The probe's orientation to the crack is important and a particular discovery is that the transverse probe should be parallel to the transverse crack and not be perpendicular to it when inspecting. A method based on linear regression is proposed to estimate flaws in casing while wall thinning in the tubing occurs at the same location. The method is effective for large area thinning in casing when tubing thinning is wide.

  9. Multi-temporal analysis of aerial images for the investigation of spatial-temporal dynamics of shallow erosion - a case study from the Tyrolean Alps

    Science.gov (United States)

    Wiegand, C.; Geitner, C.; Heinrich, K.; Rutzinger, M.

    2012-04-01

    . No significant increase of erosion could be observed for the investigated ten-year period. The majority of the eroded areas show no distinct trend but rather an irregular pattern of increase and decrease. The results fit well in a larger temporal context: in aerial images of the 1950s, the slope already shows several eroded patches, which did not change until the year 2000. The owners also confirm that erosion was even a problem before abandonment. In this case, the inclination of the terrain seems to exceed the influence of land-use activities. With the semi-automated detection of such eroded areas, a more objective and time-saving method was found. The results contribute to an improved understanding of the process and can initiate a long-term observation. In subsequent studies we will apply the approach to further test sites and adapt it for the detection of smaller eroded areas.

  10. NOx trade. Case studies

    International Nuclear Information System (INIS)

    Some of the questions with respect to the trade of nitrogen oxides that businesses in the Netherlands have to deal with are dealt with: should a business buy or sell rights for NOx emission; which measures must be taken to reduce NOx emission; how much must be invested; and how to deal with uncertainties with regard to prices. Simulations were carried out with the MOSES model to find the answers to those questions. Results of some case studies are presented, focusing on the chemical sector in the Netherlands. Finally, the financial (dis)advantages of NOx trade and the related uncertainties for a single enterprise are discussed

  11. An Investigation of the Potential of Interactive Simulations for Developing System Thinking Skills in Elementary School: A Case Study with Fifth-Graders and Sixth-Graders

    Science.gov (United States)

    Evagorou, Maria; Korfiatis, Kostas; Nicolaou, Christiana; Constantinou, Costas

    2009-01-01

    The purpose of this study was to investigate the impact of a simulation-based learning environment on elementary school students' (11-12 years old) development of system thinking skills. The learning environment included interactive simulations using the Stagecast Creator software to simulate the ecosystem of a marsh. Simulations are an important…

  12. Investigation of Travel and Activity Patterns Using Location-based Social Network Data: A Case Study of Active Mobile Social Media Users

    OpenAIRE

    Yeran Sun; Ming Li

    2015-01-01

    Due to its relatively high availability and low cost, location-based social network (LBSN) (e.g., Foursquare) data (a popular type of volunteered geographic information) seem to be an alternative or complement to survey data in the study of travel behavior and activity analysis. Illustrating this situation, recently, a number of studies attempted to use LBSN data (e.g., Foursquare check-ins) to investigate patterns of human travel and activity. Of particular note is that compared to other ind...

  13. The Investigation and Evaluation of Economic Effects of BRT on Commercial Efficiencies of Street Margin, the Case Study of Tabriz Metropolitan (from University Square to Shariati Crossroads

    Directory of Open Access Journals (Sweden)

    A Ghanbari

    2013-01-01

    Full Text Available Extended abstract1- IntroductionWith increasing urbanization and subsequent population density in cities in the era of globalization and global economic integration, providing a public transportation system which is efficient, effective, safe and inexpensive leads to economic, social and environmental sustainability. So that other indicators such as travel time, traffic, fuel consumption and air pollution be improved, in addition to the current direction of traveling towards public transportation. BRT system is one of the forms of mass transit which had been designed and implemented in order to solve urban traffic problems and move toward sustainable urban development. In this way, planners and policy makers are still interested in investing in a transportation network and density of lands as an alternative to eliminate private cars, reduce traffic and its adverse effects. This paper investigates and evaluates the effects of BRT system on commercial land uses of street margin, in Tabriz from university square to Shariati cross- road.2- MethodologyThe sample size of the study includes all economic businessmen of the margin of street in the studied area in Tabriz in 2010-2011. The statistical sample of the survey was selected according to the random sampling method. There were 180 commercial land uses; with special separation of the main junction 75 questionnaires were returned and analyzed from the north side of the street and 75 ones were returned and analyzed from the south side of the street and the questionnaire return rate was 83 percent. In this study, interview method had also been used. 3- Discussion BRT lines in Tabriz were designed to solve traffic problems and transportation. But regardless of its influential effects on the transport of Tabriz, adverse effects had been imposed on trade margin land uses in the studied area. In the area of study, due to the narrow width of passage, BRT line had allocated in one side of the street and

  14. Vertebral Angiosarcoma. Case Study.

    Science.gov (United States)

    Guzik, Grzegorz

    2015-01-01

    Bone angiosarcomas, especially vertebral angiosarcomas, are very rare. There are no studies based on large clinical samples in the literature, and only a few single case reports can be found. The symptoms of the disease are not specific. It is usually detected incidentally or at a late stage when pathological vertebral fractures or neurological complications occur. Diagnostic imaging and history help to recognize the tumour behind the symptoms, but do not allow accurate clinical diagnosis. The basis for a diagnosis is the histopathological examination supported by immunohistochemistry (IHC) assays. The case of a 26-year-old woman with an angiosarcoma involving the eighth thoracic vertebra we report reflects diagnostic problems adversely affecting the efficacy and accuracy of treatment offered to patients. The patient underwent three surgeries of the spine, including two biopsies. A needle biopsy did not provide sufficient information for the diagnosis. An open excisional biopsy, which at the same time temporarily reduced neurological deficits in the patient, was the only chance to obtain an accurate diagnosis. The third surgery was posterior decompression of the spinal cord due to the rapidly escalating paraparesis. It was not until 8 weeks later that the final diagnosis was established. At that time, the patient could not be qualified for any supplementary treatment. The patient died in hospital 6 months after the onset of disease. PMID:26468177

  15. An empirical investigation on factors influencing customer loyalty and their relationships with quality of services: A case study of insurance firm

    Directory of Open Access Journals (Sweden)

    Rostam Pourrahidi

    2014-01-01

    Full Text Available In this paper, we present an empirical investigation to study the effect of various factors influencing customer loyalty and quality of services on customer satisfaction and customer loyalty. The proposed study is implemented in one of Iranian insurance firms by choosing a sample of 171 randomly selected customers of this insurance firm. We use SERVQUAL standard questionnaire to measure customer satisfaction. The study examines three hypotheses associated with the proposed study using one-way t-student as well as path analysis, and the results have confirmed all three hypotheses. The study also uses Freedman test to rank the most important factors and detects that value was the most important issue followed by trust, customer satisfaction, empathy, value and resistance to change.

  16. Investigating the Effects of Entrepreneurship and Sustainable Competitive Advantage by Considering the Merits of Marketing and Innovation Capability (Case Study: Isfahan Province Appliances Companies)

    OpenAIRE

    Mohammad Reza Dalvi; Akram Gholami Ahangaran

    2014-01-01

    The purpose of this study is "investigating the effects of entrepreneurship and sustainable competitive advantage by considering the merits of marketing and innovation capability in Isfahan Province appliances companies". This research is descriptive-survey in the field branch. Data were collected by using a questionnaire with the help of statistical software such as SPSS statistical test of normality test of data distribution (Kolmogorov-Smirnov test), regression, and ANOVA was analyzed. The...

  17. Investigating the Effect of Job-Related Motivational Factors on the Employee and Organizational Performance through Mediating Role of Organizational Participation (Entekhab Industrial Group Case Study)

    OpenAIRE

    Mashallah Valikhani; Ebrahim Hashempoor; Bahador Moradi Vastegani

    2015-01-01

    The present study aimed to investigate the effect job-related motivations on the employee and organizational performance through mediating role of organizational participation. For this purpose, a conceptual model has been developed and tested. In this regard, a main hypothesis (the effect job-related motivations on the employee and organizational performance through mediating role of organizational participation) and nine secondary hypotheses (the effects of organizational rewards on the emp...

  18. An investigation of the potential of interactive simulations for developing system thinking skills in elementary school: a case study with fifth- and sixth- graders

    OpenAIRE

    Evagorou, Maria; Korfiatis, Kostas; Nicolaou, Christiana; Constantinou, Costas

    2009-01-01

    Abstract The purpose of this study was to investigate the impact of a simulation-based learning environment on elementary school students? (11- to 12- year old) development of system thinking skills. The learning environment included interactive simulations using the Stagecast Creator software to simulate the ecosystem of a marsh. Simulations are an important tool in any effort to develop system thinking, because they have the potential to highlight the dynamic nature of systems. B...

  19. Investigation of Travel and Activity Patterns Using Location-based Social Network Data: A Case Study of Active Mobile Social Media Users

    Directory of Open Access Journals (Sweden)

    Yeran Sun

    2015-08-01

    Full Text Available Due to its relatively high availability and low cost, location-based social network (LBSN (e.g., Foursquare data (a popular type of volunteered geographic information seem to be an alternative or complement to survey data in the study of travel behavior and activity analysis. Illustrating this situation, recently, a number of studies attempted to use LBSN data (e.g., Foursquare check-ins to investigate patterns of human travel and activity. Of particular note is that compared to other individual-level characteristics of users, such as age, profession, education, income and so forth, gender is relatively highly available in the profiles of Foursquare users. Moreover, considering gender differences in travel and activity analysis is a popular research topic and is helpful in better understanding the changes in women’s roles in family, labor force participation, society and so forth. Therefore, this paper empirically investigates how gender influences the travel and activity patterns of active local Foursquare users in New York City. Empirical investigations of gender differences in travel and activity patterns are conducted at both the individual and aggregate level. The empirical results reveal that there are gender differences in the travel and activity patterns of active local users in New York City at both the individual and aggregate level. Finally, the results of the empirical study and the extent to which LBSN data can be exploited to produce travel diary data are discussed.

  20. Neuroendocrine markers in adenocarcinomas: an investigation of 356 cases

    Institute of Scientific and Technical Information of China (English)

    Gen-You Yao; Ji-Lin Zhou; Mao-De Lai; Xiao-Qing Chen; Pei-Hui Chen

    2003-01-01

    AIM: To investigate the incidence of neuroendocrine (NE)cells and their hormone products in adenocarcinomas and evaluate their significance in clinical pathology and prognosis.METHODS: By using tissue sectioning and immunocytochemistry, 356 cases of adenocarcinomas were studied to examine the presence of chromorgranin and polypeptide hormones in adenocarcinoma samples from our hospital.RESULTS: The positive rate of NE cells and hormone products was 41.5 % (54/130) and 59.3 % (32/54), respectively in large intestinal adenocarcinoma cases; 39.6 % (38/96) and 36.8 % (14/38), respectively in gastric cancer cases; 38.1%(8/21) and 50.0 % (4/8), respectively in prostatic cancer cases; 21.0 % (17/81) and 17.6 % (3/17), respectively in breasr cancer cases; 17.9 % (5/28) and 60.0 % (3/5),respectively in pancreatic cancer cases. Among carcinomas of large intestine, pancreas and breast, the highly differentiated NE cell numbers were higher than the poorly differentiated NE cell numbers; while the gastric carcinoma cases had more poorly differentiated NE cells than highly differentiated NE cells. The higher detection rate of NE cells and their hormone products, the higher 5-year survival rate among the large intestine cancer cases.CONCLUSION: Close correlation was observed between NE cells and their hormone products with the cancer differentiations. For colorectal carcinomas, there is a close correlation of the presence of NE cells and their hormone products with the tumor staging and prognosis.

  1. Premarital cohabitation as a pathway into marriage. An investigation into how premarital cohabitation is transforming the institution of marriage in Ireland. Athlone as a case study.

    OpenAIRE

    Jackson, Ashling

    2011-01-01

    The purpose of this study is to investigate how premarital co-habitation is transforming the institution of marriage in Ireland. I conducted forty-one in-depth interviews in Athlone in 2007. The sample comprised cohabiting couples with plans to marry, cohabiting couples with no plans to marry, as well as couples who married without living together first. Respondents also filled in an event history calendar, recording key events in their lives, since the age of 16 years. Using a life course...

  2. Examples and Case Studies

    NARCIS (Netherlands)

    Asbach, C.; Aguerre, O.; Bressot, C.; Brouwer, D.H.; Gommel, U.; Gorbunov, B.; Bihan, O. le; Jensen, K.A.; Kaminski, H.; Keller, M.; Koponen, I.K.; Kuhlbusch, T.A.J.; Lecloux, A.; Morgeneyer, M.; Muir, R.; Shandilya, N.; Stahlmecke, B.; Todea, A.M.

    2014-01-01

    Release of nanomaterials may occur during any stage of the life-cycle and can eventually lead to exposure to humans, the environment or products. Due to the large number of combinations of release processes and nanomaterials, release scenarios can currently only be tested on a case-by-case basis. Th

  3. Investigation of sleep disturbance in chronic low back pain: an age- and gender-matched case-control study over a 7-night period.

    LENUS (Irish Health Repository)

    van de Water, Alexander T M

    2011-12-01

    Sleep disturbance is frequently reported by people with chronic low back pain (>12 weeks; CLBP), but few studies have comprehensively investigated sleep in this population. This study investigated differences in subjectively and objectively measured sleep patterns of people with CLBP, and compared this to age- and gender matched controls. Thirty-two consenting participants (n = 16 with CLBP, n = 16 matched controls), aged 24-65 years (43.8% male) underwent an interview regarding sleep influencing variables, completed the Pittsburgh Sleep Quality Index, Insomnia Severity Index, Pittsburgh Sleep Diary, SF36-v2, Hospital Anxiety and Depression Scale, Oswestry Disability Index, Numerical Pain Rating Scales, and underwent seven consecutive nights of actigraphic measurement in the home environment. Compared to controls, people with CLBP had, on self-report measures, significantly poorer sleep quality [Pittsburgh Sleep Quality Index (range 0-21) mean (SD) 10.9 (4.2)], clinical insomnia [Insomnia Severity Index mean (range 0-28) 13.7 (7.6)], lower sleep efficiency, longer sleep onset latency, more time awake after sleep onset, and more awakenings during sleep (p < 0.05). However, no significant differences between groups were found on objective actigraphy (p > 0.05). The findings provide some evidence to support self-reported sleep assessment as an outcome measure in CLBP research, while further research is needed to determine the validity of objective sleep measurement in this population.

  4. Integrative taxonomy to investigate species boundaries within Culicoides (Diptera: Ceratopogonidae): a case study using subgenus Avaritia from Australasia and Eastern Asia.

    Science.gov (United States)

    Gopurenko, David; Bellis, Glenn Adam; Yanase, Tohru; Wardhana, April Hari; Thepparat, Arunrat; Wang, Jinglin; Cai, Ducheng; Mitchell, Andrew

    2015-01-01

    In this study, species boundaries were examined for 15 described and 2 undescribed species within the economically important Culicoides subg. Avaritia Fox from Australasia and Eastern Asia. We used an integrative taxonomic approach incorporating DNA barcoding, nuclear gene sequencing, and retrospective morphological analyses. Some arbovirus vector species such as Culicoides fulvus Sen and Das Gupta and Culicoides wadai Kitaoka were genetically and morphologically uniform across sampled distributions, but others including Culicoides actoni Smith and Culicoides brevipalpis Delfinado contained 2 or more genetically independent populations of 'cryptic species' that in some cases were sympatric. Some of these 'cryptic species' exhibited consistent morphological differences, while differences are yet to be found for others species. Additionally, an undescribed species, C. Avaritia sp. No. 3, was found to be synonymous with C. fulvus. These results refine our understanding of the distribution of individual species of C. subg. Avaritia and demonstrate that species descriptions and distribution records need revision for part of the Culicoides fauna. Furthermore, because vector competence studies for most of these species are based entirely on Australian populations, the competence of the putative cryptic species identified elsewhere will require independent assessment. Finally, integrative taxonomic assessment requires genetic and morphological assessment of material from the type localities in order to clarify the status and distribution of species, especially for clades containing cryptic species. International collaboration is needed to facilitate this research. PMID:26741249

  5. Supporting students' scientific explanations: A case study investigating the synergy focusing on a teacher's practices when providing instruction and using mobile devices

    Science.gov (United States)

    Delen, Ibrahim

    Engage students in constructing scientific practices is a critical component of science instruction. Therefore a number of researchers have developed software programs to help students and teachers in this hard task. The Zydeco group, designed a mobile application called Zydeco, which enables students to collect data inside and outside the classroom, and then use the data to create scientific explanations by using claim-evidence-reasoning framework. Previous technologies designed to support scientific explanations focused on how these programs improve students' scientific explanations, but these programs ignored how scientific explanation technologies can support teacher practices. Thus, to increase our knowledge how different scaffolds can work together, this study aimed to portray the synergy between a teacher's instructional practices (part 1) and using supports within a mobile devices (part 2) to support students in constructing explanations. Synergy can be thought of as generic and content-specific scaffolds working together to enable students to accomplish challenging tasks, such as creating explanations that they would not normally be able to do without the scaffolds working together. Providing instruction (part 1) focused on understanding how the teacher scaffolds students' initial understanding of the claim-evidence-reasoning (CER) framework. The second component of examining synergy (part 2: using mobile devices) investigated how this teacher used mobile devices to provide feedback when students created explanations. The synergy between providing instruction and using mobile devices was investigated by analyzing a middle school teacher's practices in two different units (plants and water quality). Next, this study focused on describing how the level of synergy influenced the quality of students' scientific explanations. Finally, I investigated the role of focused teaching intervention sessions to inform teacher in relation to students' performance. In

  6. A case study investigating the process of implementing the recommendations of the "National Science Education Standards" by a fourth-grade elementary teacher

    Science.gov (United States)

    Schepige, Adele Catherine

    The National Science Education Standards were published in 1996 (National Research Council (NRC)). The Standards recommend that elementary school science should be taught as inquiry-based, and that teachers should have the time, space, and resources to teach inquiry-based science. A case study was done of a fourth grade teacher who tried to implement the recommendations of the Standards. The teacher had expressed an interest in teaching inquiry-based science even though she had little experience teaching science, had previously avoided teaching science, and had a weak academic background in science. The study focused on the factors that influence a teacher while trying to develop an inquiry-based science program and the factors a teacher attends to while trying to provide student with the time, space, and resources needed to do inquiry-based science. The study also tried to determine what factors helped the teacher determine how a teacher is able to use children's literature with inquiry-based science. The researcher was a participant observer in the teacher's classroom during the 1996-1997 school year. The researcher was involved in planning and teaching science although all final decisions were left to the teacher. Data were obtained by taking extensive field notes, using structured and unstructured interviews, document analysis, and analyzing reflective journals. Results indicate that the teacher was influenced by six major factors: colleagues, reading materials, school context, student behavior, the participant observer, and experimentation. A model for the teacher as a theory builder was developed as a result of her learning, analyzing and experimenting throughout the year. Though not without some problems, children's literature was integrated with science in different ways for different reasons. Constraints to implementing the Standards (NRC, 1996) are discussed.

  7. Investigating the effects of structured and guided inquiry on students' development of conceptual knowledge and inquiry abilities: a case study in Taiwan

    Science.gov (United States)

    Fang, Su-Chi; Hsu, Ying-Shao; Chang, Hsin-Yi; Chang, Wen-Hua; Wu, Hsin-Kai; Chen, Chih-Ming

    2016-08-01

    In order to promote scientific inquiry in secondary schooling in Taiwan, the study developed a computer-based inquiry curriculum (including structured and guided inquiry units) and investigated how the curriculum influenced students' science learning. The curriculum was implemented in 5 junior secondary schools in the context of a weeklong summer science course with 117 students. We first used a multi-level assessment approach to evaluate the students' learning outcomes with the curriculum. Then, a path analysis approach was adopted for investigating at different assessment levels how the curriculum as a whole and how different types of inquiry units affected the students' development of conceptual understandings and inquiry abilities. The results showed that the curriculum was effective in enhancing the students' conceptual knowledge and inquiry abilities in the contexts of the six scientific topics. After the curriculum, they were able to construct interconnected scientific knowledge. The path diagrams suggested that, due to different instructional designs, the structured and guided inquiry units appeared to support the students' learning of the topics in different ways. More importantly, they demonstrated graphically how the learning of content knowledge and inquiry ability mutually influenced one another and were reciprocally developed in a computer-based inquiry learning environment.

  8. Investigating the implications of meteorological indicators of seasonal rainfall performance on maize yield in a rain-fed agricultural system: case study of Mt. Darwin District in Zimbabwe

    Science.gov (United States)

    Mushore, Terence; Manatsa, Desmond; Pedzisai, Ezra; Muzenda-Mudavanhu, Chipo; Mushore, Washington; Kudzotsa, Innocent

    2016-06-01

    The study focuses on the impacts of climate variability and change on maize yield in Mt. Darwin District. The rainfall and temperature data for the period under study that is from 1992 to 2012 were obtained from Meteorological Services Department of Zimbabwe at daily resolution while crop yield data were obtained from Department of Agricultural, Technical and Extension Services (AGRITEX) and Zimbabwe Statistics Agency (ZIMSTAT) at seasonal/yearly resolution. In order to capture full rainfall seasons, a year was set to begin on 1 June and end on 31 July the next year. Yearly yield, temperature and rainfall data were used to compute time series analysis of rainfall, temperature and yield. The relationship between temperature, rainfall, quality of season (start, cessation, dry days, wet days and length) and yield was also investigated. The study also investigated the link between meteorological normal and maize yield. The study revealed that temperature is rising while rainfall is decreasing with time hence increasing risk of low maize yield in Mt. Darwin. Correlation between maize yield was higher using a non-linear (R 2 = 0.630) than a linear regression model (R 2 = 0.173). There was a very high correlation between maize yield and number of dry days (R = -0.905) as well as between maize yield and length of season (R = 0.777). We also observed a strong correlation between percentage normal rainfall and percentage normal maize yield (R 2 = 0.753). This was also agreed between rainfall tessiles and maize yield tessiles as 50 % of the seasons had normal and above normal rainfall coinciding with normal and above normal maize yield. Of the 21 seasons considered, only one season had above normal rainfall while maize yield was below normal. The study concluded that there is a strong association between meteorological normal and maize yield in a rain-fed agricultural system. Climate information remains crucial to agricultural productivity hence the need to train farmers to

  9. A case study for energy issues of public buildings and utilities in a small municipality: Investigation of possible improvements and integration with renewables

    International Nuclear Information System (INIS)

    (ROI) for investments in energy bill reduction are presented. Although few data are available in the literature about actions to improve energy efficiency in the public sector of small municipalities, the comparison of energy consumption of Certaldo with that of bigger towns with similar climate conditions showed a reasonable proportionality to population and size of the urban area. Thus, the methodology and the examined solutions could be considered a representative case study and a starting point for municipalities with a similar size and number of inhabitants. Finally, a curve of profitability for investments in energy efficiency of the administration was constructed. It can be extended, at least in a first approximation, to similar cases.

  10. Teaching Pharmacology by Case Study.

    Science.gov (United States)

    Jordan, Sue

    1997-01-01

    Using pharmacology case studies with nursing students encourages theory-practice links and infuses real-life content. Cases provide rich qualitative data for evaluating curriculum. However, they are not a substitute for evidence-based practice. (SK)

  11. Investigating the Effect of Environmental Factors on the Success of Academic Reproductive Companies (Case Study: the Companies of Isfahan Science & Technology Town

    Directory of Open Access Journals (Sweden)

    Ali Kazemi

    2016-01-01

    Full Text Available Commercializing Academic studies and research is a Process that needs trilateral cooperation among university, industry and government. Academic institutions by responding to social needs and helping to boost economic development, improve their public image. Concurrent with the development of research activities, especially in the field of new technologies, new perspectives are formed that In such circumstances, a new form of companies have emerged as Reproductive Companies. Reproductive Company is a kind of new business that is the result of separation from university. The present study was an attempt to investigate the effect of environmental factors on the success of academic reproductive companies of Isfahan Scientific and Research Town.This study is practical in purpose and is a descriptive-survey one the from research methodology perspective. The population consists of 256 companies. A sample of 148 companies was selected. The sample size was determined through the Morgan Sampling Table. The sample members were selected randomly. In order to collect the research data, a researcher-developed questionnaire was developed. The questionnaire consists of 45 questions. The validity of questionnaire was measured through both content and construct validity. Also the reliability of questionnaire was measured through Cronbach’s Alpha Coefficient. The coefficient was 0.916 which confirms the reliability of the questionnaire. The research data were analyzed through AMOS. The findings revealed that factors like the governmental rules, parent universities, and regions affect the company success. Among the sated factors, region, state laws and parent university have the highest impact on the success of these companies, respectively.

  12. Intercultural Communicative Case Study

    Institute of Scientific and Technical Information of China (English)

    吴冬梅

    2009-01-01

    The essay is mainly about the author's comprehension of cultural differences and intercultural communication after reading the book Communication Between Cultures.In addition,the author also analyses three cases with the theories and approaches mentioned in Communication Between Cultures.

  13. Systematic investigation of gridding-related scaling effects on annual statistics of daily temperature and precipitation maxima: A case study for south-east Australia

    Directory of Open Access Journals (Sweden)

    Francia B. Avila

    2015-09-01

    Full Text Available Using daily station observations over the period 1951–2013 in a region of south-east Australia, we systematically compare how the horizontal resolution, interpolation method and order of operation in generating gridded data sets affect estimates of annual extreme indices of temperature and precipitation maxima (hottest and wettest days. Three interpolation methods (natural neighbors, cubic spline and angular distance weighting are used to calculate grids at five different horizontal gridded resolutions ranging from 0.25° to 2.5°. In each case the order of operation in which the grid values of the hottest and wettest day are calculated is varied: either they are estimated from daily grids or from station points and then gridded. We find that the grid resolution-despite showing more regional detail at high resolution – has relatively limited effect when considering regional averages. However, the interpolation method and the order of operation can substantially influence the actual gridded values. And while the difference due to the order of operation is not substantial when using natural neighbor and cubic spline interpolation, it is particularly apparent for indices calculated from daily gridded estimates using the angular distance weighting method. As expected given the high spatial variability of precipitation fields, precipitation extremes are most sensitive to method, but temperature extremes also exhibit substantial differences. For the annual maximum values averaged over the study area, the differences may be up to 2.8 °C for temperature and 60 mm (about a factor 2 for precipitation. Differences are seen most prominently in return period estimates where a 1 in 100 year return value calculated using the angular distance weighting daily gridded method is equivalent to about a 1 in 5 year return value in most of the other methods. Despite substantial differences in the actual values of gridded extremes, analyses suggest that the

  14. Music in context : Four case studies

    NARCIS (Netherlands)

    Randwijck, R.J.C. van

    2008-01-01

    In his thesis entitled “Music in Context. Four Case Studies”, R.J.C. van Randwijck investigates the context in which music has been created. It is a search in Four Case Studies, approaching four pieces of music from the context in which they were written in order to understand their meaning. The inv

  15. Investigation the requirements of supply and distribution emergency logistics management and categorization its sub-criteria using AHP: a case study

    Directory of Open Access Journals (Sweden)

    Sadegh Feizollahi

    2012-10-01

    Full Text Available The management of procurement and distribution is one of the most important branches of the crisis management and events that, has great importance in the field of management. In this paper, we perform an empirical study to investigate important factors on emergency logistic emergency preparation distribution management among people who worked for governorship, hygiene and treatment, Red Crescent, electricity, water and sewage and transportation of central province of Ilam in west part of Iran. The survey distributed a questionnaire among some people and examined six hypotheses. The results of our survey indicate that employees who worked for these organizations maintained high levels of skills; they were able to access what they needed in their organization. In addition, the survey indicates that the access to the necessary information in their organizations; they are able to take care of their documentations. They could also execute their jobs based on good schedules and accomplished their tasks, properly. They survey also performed a multi-criteria decision making approach using AHP to prioritize important activities to improve logistic operations. The results indicate that having a good database is number one priority with relative weight of 0.51, followed by appropriate operating planning with relative weight of 0.295. Supply control came on the third position with relative weight of 0.134 and finally task assignment came as the last priority with relative weight of 0.061.

  16. An Investigation to the Interaction between Typhoon-induced Near Inertial Wave and Tide in the South China Sea: a case study

    Science.gov (United States)

    Xu, Zhao; Guan, Shoude; Tian, Jiwei

    2016-04-01

    South China Sea (SCS), a semi-closed marginal sea in the tropics, is affected by Tropical Cyclones (TCs) significantly, as TCs excite great amount of Near Inertial Waves (NIWs) and induce excessive turbulence mixing in the ocean interior. However, unlike many other tropical areas, SCS is also under the influence of strong internal tides and internal solitary waves. In this study, the interactions between the internal tides and NIWs are investigated by analyzing a set of numerical experiments with the Regional Ocean Modeling System (ROMS). The ocean model is forced by a synthetic surface wind field of Typhoon Megi (October 2012) by blending NCEP wind with a pseudo surface wind based on the Best Track data. The typhoon-induced oceanic anomalies are then examined. The model is able to reproduce the oceanic response reasonably well and some interesting differences were found by comparing the results of experiments with/without tides. The diffusivity coefficient indicates the interactions between the NIWs and internal tides. In other word, energy in the inertial frequency band is transferred to other frequencies. There is also an anomalous heat transport at the thermocline, causing a change in the upper ocean heat content.

  17. A case study investigating the occurrence of geosmin and 2-methylisoborneol (MIB) in the surface waters of the Hinze Dam, Gold Coast, Australia.

    Science.gov (United States)

    Uwins, H K; Teasdale, P; Stratton, H

    2007-01-01

    The Hinze Dam is located in the Gold Coast hinterland and is the primary source of water supply for the Gold Coast region. Sporadic and unpredictable taste and odour events caused by geosmin and 2-methylisoborneol (MIB) are an ongoing problem in the Hinze Dam. To investigate potential ecological and physiological triggers of these events, a 12-month surface-sampling regime was undertaken. Concentrations of geosmin, MIB, nitrogen and phosphorus were measured. Algal and cyanobacterial counts were performed. Water temperature, rainfall and dam capacity were also recorded. The occurrence of geosmin was found to correlate significantly with Anabaena numbers, water temperature and dam capacity. The occurrence of MIB correlated with increasing ammonia. No significant correlations were observed with the other nutrients or physical parameters measured. Overall, this study demonstrated that high concentrations of geosmin detected in dam surface waters was strongly correlated with an increase in numbers of Anabaena spp. These events were most likely triggered by significant rainfall causing a pulse in nutrients into the dam, in conjunction with warmer water temperatures.

  18. Sensitivity Analysis and Investigation of the Behaviour of the UTOPIA Land-Surface Process Model: A Case Study for Vineyards in Northern Italy

    Science.gov (United States)

    Francone, C.; Cassardo, C.; Richiardone, R.; Confalonieri, R.

    2012-09-01

    We used sensitivity-analysis techniques to investigate the behaviour of the land-surface model UTOPIA while simulating the micrometeorology of a typical northern Italy vineyard ( Vitis vinifera L.) under average climatic conditions. Sensitivity-analysis experiments were performed by sampling the vegetation parameter hyperspace using the Morris method and quantifying the parameter relevance across a wide range of soil conditions. This method was used since it proved its suitability for models with high computational time or with a large number of parameters, in a variety of studies performed on different types of biophysical models. The impact of input variability was estimated on reference model variables selected among energy (e.g. net radiation, sensible and latent heat fluxes) and hydrological (e.g. soil moisture, surface runoff, drainage) budget components. Maximum vegetation cover and maximum leaf area index were ranked as the most relevant parameters, with sensitivity indices exceeding the remaining parameters by about one order of magnitude. Soil variability had a high impact on the relevance of most of the vegetation parameters: coefficients of variation calculated on the sensitivity indices estimated for the different soils often exceeded 100 %. The only exceptions were represented by maximum vegetation cover and maximum leaf area index, which showed a low variability in sensitivity indices while changing soil type, and confirmed their key role in affecting model results.

  19. Investigation of Slow-Moving Landslides from ALOS/PALSAR Images with TCPInSAR: A Case Study of Oso, USA

    Directory of Open Access Journals (Sweden)

    Qian Sun

    2014-12-01

    Full Text Available Monitoring slope instability is of great significance for understanding landslide kinematics and, therefore, reducing the related geological hazards. In recent years, interferometric synthetic aperture radar (InSAR has been widely applied to this end, especially thanks to the prompt evolution of multi-temporal InSAR (MTInSAR algorithms. In this paper, temporarily-coherent point InSAR (TCPInSAR, a recently-developed MTInSAR technique, is employed to investigate the slow-moving landslides in Oso, U.S., with 13 ALOS/PALSAR images. Compared to other MTInSAR techniques, TCPInSAR can work well with a small amount of data and is immune to unwrapping errors. Furthermore, the severe orbital ramps emanated from the inaccurate determination of the ALOS satellite’s state vector can be jointly estimated by TCPInSAR, resulting in an exhaustive separation between the orbital errors and displacement signals. The TCPInSAR-derived deformation map indicates that the riverside slopes adjacent to the North Fork of the Stillaguamish River, where the 2014 mudslide occurred, were active during 2007 and 2011. Besides, Coal Mountain has been found to be experiencing slow-moving landslides with clear boundaries and considerable magnitudes. The Deer Creek River is also threatened by a potential landslide dam due to the creeps detected in a nearby slope. The slope instability information revealed in this study is helpful to deal with the landslide hazards in Oso.

  20. Case Study - "Marketing Christmas"

    Institute of Scientific and Technical Information of China (English)

    何青青

    2011-01-01

    @@ The following is based on a real case but the name of the company has been changed and the source will only be revealed after the submission deadline.It is June in Eastern China and temperatures are over 30 degrees Celsius.In Huang Yi-Ju's wholesale showroom, based in Yiwu, model Father Christmases line the shelves, fill the floors and scale the walls.

  1. The investigation of the effects of cultural capital on body management from a sociological perspective (case study of the youth of Gilan-e-gharb

    Directory of Open Access Journals (Sweden)

    Ghrbanali Ebrahimi

    2012-06-01

    Full Text Available Abstract   Body management means constant monitoring and manipulation of visible features of body that consists of following indexes: weight controlling (through exercise, diet and medication, medical manipulation (plastic surgery and paying attention to health care and cosmetics (daily bathing, hairdressing, makeup, using of perfume, deodorant and nail makeup and colored lens for women.   Cultural capital, as one of the key concepts in contemporary sociology, has great importance. Cultural capital refers to concentration and accumulation of different types of tangible cultural goods and power and ability to provide and take these kinds of goods as well as individual talents and capacities in understanding and application of these goods. According to Bourdieu cultural capital can be divided into three categories; internalized, internalized and institutionalized cultural capital.   The present study makes an attempt to investigate the theoretical relationship between cultural capital and body management through the framework provided by "Bourdieu" and “Giddens" theories. The procedure adopted in the present paper is the survey one through a questionnaire with a sample population of 402 youths (male and female aged between15-29 living in the city of Gilan-e-gharb. The sampling method was Multistage cluster sampling.   Results of the application of both descriptive and analytic statistics point to the fact that the average of cultural capital (3.37 out of 5 is higher than body management (2.82 out of 5. The results show that both cultural capital and body management in the society under investigation are in an average amount. The comparisons made between the coefficient indexes indicate that cultural capital among girls with 0.335 is higher than among boys with 0.298. Moreover, multi-variable linear regressions for variables independent from body management (boys and girls indicate that from among independent variables (internalized cultural

  2. Evaluation of a sequencing batch reactor sewage treatment rig for investigating the fate of radioactively labelled pharmaceuticals: Case study of propranolol.

    Science.gov (United States)

    Popple, T; Williams, J B; May, E; Mills, G A; Oliver, R

    2016-01-01

    Pharmaceuticals are frequently detected in the aquatic environment, and have potentially damaging effects. Effluents from sewage treatment plants (STPs) are major sources of these substances. The use of sequencing batch reactor (SBR) STPs, involving cycling between aerobic and anoxic conditions to promote nitrification and denitrification, is increasing but these have yet to be understood in terms of removal of pharmaceutical residues. This study reports on the development of a laboratory rig to simulate a SBR. The rig was used to investigate the fate of radiolabelled propranolol. This is a commonly prescribed beta blocker, but with unresolved fate in STPs. The SBR rig (4.5 L) was operated on an 8 h batch cycle with settled sewage. Effective treatment was demonstrated, with clearly distinct treatment phases and evidence of nitrogen removal. Radiolabelled (14)C-propranolol was dosed into both single (closed) and continuous (flow-through) simulations over 13 SBR cycles. Radioactivity in CO2 off-gas, biomass and liquid was monitored, along with the characteristics of the sewage. This allowed apparent rate constants and coefficients for biodegradation and solid:water partitioning to be determined. Extrapolation from off-gas radioactivity measurements in the single dose 4-d study suggested that propranolol fell outside the definitions of being readily biodegradable (DegT50 = 9.1 d; 60% biodegradation at 12.0 d). During continuous dosing, 63-72% of propranolol was removed in the rig, but less than 4% of dose recovered as (14)CO2, suggesting that biodegradation was a minor process (Kbiol(M) L kg d(-1) = 22-49) and that adsorption onto solids dominated, giving rise to accumulations within biomass during the 17 d solid retention time in the SBR. Estimations of adsorption isotherm coefficients were different depending on which of three generally accepted denominators representing sorption sites was used (mixed liquor suspended solids, reactor COD or mass of waste

  3. Case Study: Case Studies and the Flipped Classroom

    Science.gov (United States)

    Herreid, Clyde Freeman; Schiller, Nancy A.

    2013-01-01

    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 the positive and negative aspects of the "flipped classroom." In the flipped classroom model, what is normally done in class and what is normally done as…

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

    NARCIS (Netherlands)

    Steenhuis, Harm-Jan; Bruijn, de Erik J.

    2006-01-01

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

  5. Theory Testing Using Case Studies

    DEFF Research Database (Denmark)

    Møller, Ann-Kristina Løkke; Dissing Sørensen, Pernille

    2014-01-01

    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......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...... research paths....

  6. Experimental investigation on SPS casing treatment with bias flow

    Institute of Scientific and Technical Information of China (English)

    Dong Xu; Sun Dakuna; Liu Xiaohua ba; Sun Xiaofeng

    2014-01-01

    Generally, casing treatment (CT) is a passivity method to enhance the stall margin of fan/compressor. A novel casing treatment based on the small disturbance theory and vortex and wave interaction suggestion is a method combining passive control and active control, which has been proved effective at enhancing the stall margin of fan/compressor in experiment. In order to investigate the mechanism of this kind of casing treatment, an experimental investigation of a stall precursor-suppressed (SPS) casing treatment with air suction or blowing air is conducted in the present paper. The SPS casing treatment is designed to suppressing stall precursors to realize stall margin enhancement in turbomachinery. The experimental results show that the casing treatment with blowing air of small quantity can improve the stall margin by about 8%with about 1%effi-ciency loss. By contrast, the SPS casing treatment with micro-bias flow does not improve the stall margin much more than that without bias flow, even worse. Meanwhile, the present investigation has also attempted to reveal the mechanism of stall margin improvement with the casing treatment. It is found that the stall margin improvements vary with the modification of the unsteady shedding flow and the unsteady wall boundary impedance. The experimental results agree fairly well with the theoretical prediction using a flow stability model of rotating stall.

  7. Experimental investigation on SPS casing treatment with bias flow

    Directory of Open Access Journals (Sweden)

    Dong Xu

    2014-12-01

    Full Text Available Generally, casing treatment (CT is a passivity method to enhance the stall margin of fan/compressor. A novel casing treatment based on the small disturbance theory and vortex and wave interaction suggestion is a method combining passive control and active control, which has been proved effective at enhancing the stall margin of fan/compressor in experiment. In order to investigate the mechanism of this kind of casing treatment, an experimental investigation of a stall precursor-suppressed (SPS casing treatment with air suction or blowing air is conducted in the present paper. The SPS casing treatment is designed to suppressing stall precursors to realize stall margin enhancement in turbomachinery. The experimental results show that the casing treatment with blowing air of small quantity can improve the stall margin by about 8% with about 1% efficiency loss. By contrast, the SPS casing treatment with micro-bias flow does not improve the stall margin much more than that without bias flow, even worse. Meanwhile, the present investigation has also attempted to reveal the mechanism of stall margin improvement with the casing treatment. It is found that the stall margin improvements vary with the modification of the unsteady shedding flow and the unsteady wall boundary impedance. The experimental results agree fairly well with the theoretical prediction using a flow stability model of rotating stall.

  8. Theory testing using case studies

    DEFF Research Database (Denmark)

    Dissing Sørensen, Pernille; Løkke Nielsen, Ann-Kristina

    Case studies may have different research goals. One such goal is the testing of small-scale and middle-range theories. Theory testing refers to the critical examination, observation, and evaluation of the 'why' and 'how' of a specified phenomenon in a particular setting. In this paper, we focus...... on the strengths of theory-testing case studies. We specify research paths associated with theory testing in case studies and present a coherent argument for the logic of theoretical development and refinement using case studies. We emphasize different uses of rival explanations and their implications for research...... design. Finally, we discuss the epistemological logic, i.e., the value to larger research programmes, of such studies and, following Lakatos, conclude that the value of theory-testing case studies lies beyond naïve falsification and in their contribution to developing research programmes in a progressive...

  9. Firefighter Workplace Learning: An Exploratory Case Study

    Science.gov (United States)

    Tracey, Edward A.

    2014-01-01

    Despite there being a significant amount of research investigating workplace learning, research exploring firefighter workplace learning is almost nonexistent. The purpose of this qualitative multi-case study was to explore how firefighters conceptualize, report, and practice workplace learning. The researcher also investigated how firefighters…

  10. Three Community College Case Studies

    Science.gov (United States)

    Wojtysiak, Joseph; Sutton, William J., II; Wright, Tommy; Brantley, Linda

    2011-01-01

    This article presents three case studies that focus on specific projects that are underway or have been completed. In the first case study, Joseph Wojtysiak and William J. Sutton, II discuss the Green Center of Central Pennsylvania, which is designed to serve as the state's preeminent source for education, training and public information about…

  11. Employer Branding - fashion or the future? Investigation into the necessity of Employer Branding for organisations to attract talent - Case Study : Triodor Software

    OpenAIRE

    Pöyry, Elina

    2012-01-01

    The aim of this thesis was to find out whether employer branding is a necessary action every organisation should take to attract more job applicants, or is it just a current fashion invented by the Human Resources professionals. Besides investigating the general necessity of the concept, this research also gives recommendations to a company called Triodor Software about needed actions to increase the quality and quantity of their job applicants. The need for this research aroused when cur...

  12. Case study - Argentina

    International Nuclear Information System (INIS)

    Antecedents and experience of nuclear activities in Argentina; the Atomic Energy Commission (CNEA). First development and research activities. Research reactors and radioisotopes plants. Health physics and safety regulations. - Feasibility studies for the first nuclear power plant. Awarding the first plant CNA I (Atucha I). Relevant data related to the different project stages. Plant performance. - Feasibility study for the second nuclear power plant. Awarding the second plant CNE (Central Nuclear Embalse). Relevant data related to established targets. Differences compared with the first station targets. Local participation. Plant performance. (orig./GL)

  13. Gray cases of child abuse: Investigating factors associated with uncertainty.

    Science.gov (United States)

    Chaiyachati, Barbara H; Asnes, Andrea G; Moles, Rebecca L; Schaeffer, Paula; Leventhal, John M

    2016-01-01

    Research in child abuse pediatrics has advanced clinicians' abilities to discriminate abusive from accidental injuries. Less attention, however, has been paid to cases with uncertain diagnoses. These uncertain cases - the "gray" cases between decisions of abuse and not abuse - represent a meaningful challenge in the practice of child abuse pediatricians. In this study, we describe a series of gray cases, representing 17% of 134 consecutive children who were hospitalized at a single pediatric hospital and referred to a child abuse pediatrician for concerns of possible abuse. Gray cases were defined by scores of 3, 4, or 5 on a 7-point clinical judgment scale of the likelihood of abuse. We evaluated details of the case presentation, including incident history, patient medical and developmental histories, family social histories, medical studies, and injuries from the medical record and sought to identify unique and shared characteristics compared with abuse and accidental cases. Overall, the gray cases had incident histories that were ambiguous, medical and social histories that were more similar to abuse cases, and injuries that were similar to accidental injuries. Thus, the lack of clarity in these cases was not attributable to any single element of the incident, history, or injury. Gray cases represent a clinical challenge in child abuse pediatrics and deserve continued attention in research.

  14. Principles on administrative implementation of nuclear safety regulations. Case study of the investigation framework by nuclear regulation authority on the shatter zones at the Tsuruga Power Station

    International Nuclear Information System (INIS)

    The investigation by experts commissioned by the Nuclear Regulations Authority (NRA) concluded that 'the D-1' shatter zone directly beneath the base mat of the Tsuruga Power Station Unit 2 might be an active fault. According to NRA's interpretation of regulations, an active fault beneath critical facilities alone disables their operations. The administrative procedure of this investigation and conclusion, however, raised three regulatory problems as follows; the deficiency to effectively reflect associated scientific knowledge to evolve, insufficient institutional independence of risk assessment from risk management, and legal difficulty in conducting administrative dispute to enforce administrative remedies. This report, through analyzing these regulatory problems, proposes the following three regulatory reforms in order to alleviate them. (1) Reform internal consultative experts committees appointed by the NRA, which are excercizing decisive influences on administrative disposition while without any statutory basis, into a statutory council or a special purpose committee under the Act for Establishement of Nuclear Regulation Authority. (2) Substantialize institutional separation of risk assessment from risk management in NRA by statutory measures. (3) Make procedures and rules concerning experts' deliberative judgements into administrative bylaws to the extent necessary to secure accountability and self-regulation in the NRA. (author)

  15. Investigation of the dynamic system behaviour of pump cases

    OpenAIRE

    Heisel, Uwe; Fiebig, Wieslaw

    1993-01-01

    Hydraulic pumps convert mechanical power into hydraulic fluid power. During this process, alternating forces in hydraulic pumps incite vibrations in the pump case and are responsible for the structure-borne noise. Mainly dynamic forces in bearings are the source causing structure-borne noise which generates finally air-borne noise. For this reason, those dynamic forces have been investigated based on a dynamical model. The structure borne noise has been measured on the pump case surface. The ...

  16. The Toxicology Investigators Consortium Case Registry—The 2012 Experience

    OpenAIRE

    Wiegand, Timothy; Wax, Paul; Smith, Eric; Hart, Katherine; Brent, Jeffrey

    2013-01-01

    In 2010, the American College of Medical Toxicology (ACMT) established its Case Registry, the Toxicology Investigators Consortium (ToxIC). All cases are entered prospectively and include only suspected and confirmed toxic exposures cared for at the bedside by board-certified or board-eligible medical toxicologists at its participating sites. The primary aims of establishing this Registry include the development of a realtime toxico-surveillance system in order to identify and describe current...

  17. Investigating the effects of sales promotions on customer behavioral intentions at duty-free shops: An Incheon International Airport case study

    Directory of Open Access Journals (Sweden)

    Jin-Woo Park

    2013-09-01

    Full Text Available Purpose: This paper seeks to investigate the effects of sales promotions at airport duty-free shops by testing a conceptual model that considers price, coupons, free gifts, points, satisfaction, value, image, and behavioral intentions simultaneously.Design/methodology/approach: For this testing, structural equation modeling was applied to data collected from duty-free shop users at Incheon International Airport.Findings: Price and coupons were found as significant drivers of customer satisfaction, which was directly related to customer value, image, and behavioral intentions.Originality/value: This paper is the first research that examines the effects of sales promotions at the duty-free shops of Incheon International Airport. The identified sales promotion factors that influence the behavioral intentions of customers at duty-free shops are potentially useful for analyzing the possible trends and changes in duty-free shop customer buying behavior.

  18. Investigating the Capability of IRS-P6-LISS IV Satellite Image for Pistachio Forests Density Mapping (case Study: Northeast of Iran)

    Science.gov (United States)

    Hoseini, F.; Darvishsefat, A. A.; Zargham, N.

    2012-07-01

    In order to investigate the capability of satellite images for Pistachio forests density mapping, IRS-P6-LISS IV data were analyzed in an area of 500 ha in Iran. After geometric correction, suitable training areas were determined based on fieldwork. Suitable spectral transformations like NDVI, PVI and PCA were performed. A ground truth map included of 34 plots (each plot 1 ha) were prepared. Hard and soft supervised classifications were performed with 5 density classes (0-5%, 5-10%, 10-15%, 15-20% and > 20%). Because of low separability of classes, some classes were merged and classifications were repeated with 3 classes. Finally, the highest overall accuracy and kappa coefficient of 70% and 0.44, respectively, were obtained with three classes (0-5%, 5-20%, and > 20%) by fuzzy classifier. Considering the low kappa value obtained, it could be concluded that the result of the classification was not desirable. Therefore, this approach is not appropriate for operational mapping of these valuable Pistachio forests.

  19. Investigating the Influence of Light Shelf Geometry Parameters on Daylight Performance and Visual Comfort, a Case Study of Educational Space in Tehran, Iran

    Directory of Open Access Journals (Sweden)

    Mohammad Hossein Moazzeni

    2016-07-01

    Full Text Available Daylight can be considered as one of the most important principles of sustainable architecture. It is unfortunate that this is neglected by designers in Tehran, a city that benefits from a significant amount of daylight and many clear sunny days during the year. Using a daylight controller system increases space natural light quality and decreases building lighting consumption by 60%. It also affects building thermal behavior, because most of them operate as shading. The light shelf is one of the passive systems for controlling daylight, mostly used with shading and installed in the upper half of the windows above eye level. The influence of light shelf parameters, such as its dimensions, shelf rotation angle and orientation on daylight efficiency and visual comfort in educational spaces is investigated in this article. Daylight simulation software and annual analysis based on climate information during space occupation hours were used. The results show that light shelf dimensions, as well as different orientations, especially in southern part, are influential in the distribution of natural light and visual comfort. At the southern orientation, increased light shelf dimensions result in an increase of the area of the work plane with suitable daylight levels by 2%–40% and a significant decrease in disturbing and intolerable glare hours.

  20. Investigating combinatorial approaches in virtual screening on human inducible 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase (PFKFB3): a case study for small molecule kinases.

    Science.gov (United States)

    Crochet, Robert B; Cavalier, Michael C; Seo, Minsuh; Kim, Jeong Do; Yim, Young-Sun; Park, Seung-Jong; Lee, Yong-Hwan

    2011-11-01

    Efforts toward improving the predictiveness in tier-based approaches to virtual screening (VS) have mainly focused on protein kinases. Despite their significance as drug targets, small molecule kinases have been rarely tested with these approaches. In this paper, we investigate the efficacy of a pharmacophore screening-combined structure-based docking approach on the human inducible 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase, an emerging target for cancer chemotherapy. Six out of a total 1364 compounds from NCI's Diversity Set II were selected as true actives via throughput screening. Using a database constructed from these compounds, five programs were tested for structure-based docking (SBD) performance, the MOE of which showed the highest enrichments and second highest screening rates. Separately, using the same database, pharmacophore screening was performed, reducing 1364 compounds to 287 with no loss in true actives, yielding an enrichment of 4.75. When SBD was retested with the pharmacophore filtered database, 4 of the 5 SBD programs showed significant improvements to enrichment rates at only 2.5% of the database, with a 7-fold decrease in an average VS time. Our results altogether suggest that combinatorial approaches of VS technologies are easily applicable to small molecule kinases and, moreover, that such methods can decrease the variability associated with single-method SBD approaches.

  1. Investigation on the hydrodynamics of Ganga Alluvial Plain using environmental isotopes: a case study of the Gomati River Basin, northern India

    Science.gov (United States)

    Singh, Munendra; Kumar, Sudhir; Kumar, Bhishm; Singh, Sandeep; Singh, Indra Bir

    2013-05-01

    An investigation using environmental isotopes (δ18O and δD) was conducted to gain insight into the hydrological processes of the Ganga Alluvial Plain, northern India. River-water, shallow-groundwater and lake-water samples from the Gomati River Basin were analyzed. During the winter season, the δ18O and δD compositions of the Gomati River water ranged from -1.67 to -7.62 ‰ and -25.08 to -61.50 ‰, respectively. Deuterium excess values in the river water (+0.3 to -13 ‰) and the lake water (-20 ‰) indicate the significance of evaporation processes. Monthly variation of δ18O and δD values of the Gomati River water and the shallow groundwater follows a similar trend, with isotope-depleted peaks for δ18O and δD synchronized during the monsoon season. The isotopically depleted peak values of the river water (δ18O = -8.30 ‰ and δD = -57.10 ‰) can be used as a proxy record for the isotopic signature of the monsoon precipitation in the Ganga Alluvial Plain.

  2. Investigating the Effects of Reward on the Cooperation in the Sale and Marketing Department from Managers’ Perspective (Isfahan Food Industries Case Study

    Directory of Open Access Journals (Sweden)

    Mohammad Reza Dalvi

    2013-11-01

    Full Text Available The sale and marketing unit is of the most important departments in every organization. In comparison to the internal factors, the effective communications in sale and marketing has a crucial role in promoting organizational performance. Therefore, the present study was aimed to answer this question that can the employees promote their organization through sale and marketing efforts. Also this study seeks to answer this question that whether adoption of the common rewards facilitate the employees’ cooperation and decrease the conflicts between sale and marketing efforts. The statistical population of this study includes managers of Isfahan food industry. This statistical population consists of 180 male and female managers. A self-administrated questionnaire has been employed to collect the data. Validity of this questionnaire has been examined and confirmed by management and marketing professors and experts. Also its reliability has been examined through Cronbachs’ Alpha Coefficient. The coefficient 0.73 confirms reliability of the questionnaire. This study is a practical research from purpose perspective and is a descriptive-survey one from methodological view. The SPSS and Amos are the statistical software that has been used to analyze the data and test the hypotheses. Finally, the results of goodness of model fit indicate the model has favorable goodness (RMSEA: 0.055, CFI: 0.97.

  3. Constraining fault activity by investigating tectonically-deformed Quaternary palaeoshorelines using a synchronous correlation method: the Capo D'Orlando Fault as a case study (NE Sicily, Italy)

    Science.gov (United States)

    Meschis, Marco; Roberts, Gerald P.; Robertson, Jennifer

    2016-04-01

    Long-term curstal extension rates, accommodated by active normal faults, can be constrained by investigating Late Quaternary vertical movements. Sequences of marine terraces tectonically deformed by active faults mark the interaction between tectonic activity, sea-level changes and active faulting throughout the Quaternary (e.g. Armijo et al., 1996, Giunta et al, 2011, Roberts et al., 2013). Crustal deformation can be calculated over multiple seismic cycles by mapping Quaternary tectonically-deformed palaeoshorelines, both in the hangingwall and footwall of active normal faults (Roberts et al., 2013). Here we use a synchronous correlation method between palaeoshorelines elevations and the ages of sea-level highstands (see Roberts et al., 2013 for further details) which takes advantage of the facts that (i) sea-level highstands are not evenly-spaced in time, yet must correlate with palaeoshorelines that are commonly not evenly-spaced in elevation, and (ii) that older terraces may be destroyed and/or overprinted by younger highstands, so that the next higher or lower paleoshoreline does not necessarily correlate with the next older or younger sea-level highstand. We investigated a flight of Late Quaternary marine terraces deformed by normal faulting as a result of the Capo D'Orlando Fault in NE Sicily (e.g. Giunta et al., 2011). This fault lies within the Calabrian Arc which has experienced damaging seismic events such as the 1908 Messina Straits earthquake ~ Mw 7. Our mapping and previous mapping (Giunta et al. (2011) demonstrate that the elevations of marine terraces inner edges change along the strike the NE - SW oriented normal fault. This confirms active deformation on the Capo D'Orlando Fault, strongly suggesting that it should be added into the Database of Individual Seismogenic Sources (DISS, Basili et al., 2008). Giunta et al. (2011) suggested that uplift rates and hence faults lip-rates vary through time for this examples. We update the ages assigned to

  4. Investigate the Customers' Behavioral Intention to Use Mobile Banking Based on TPB, TAM and Perceived Risk (A Case Study in Meli Bank

    Directory of Open Access Journals (Sweden)

    Hossein Rezaie Dolat Abadi

    2012-10-01

    Full Text Available The aim of this study is to analysis the factors affecting the use of mobile banking in city of Isfahan. For this purpose, Theory of planned behavior (TPB ,Technology acceptance model (TAM and perceived risk were used to construct a model to study the adoption intention of mobile banking .We designed a questionnaire and used it to survey a randomly selected sample of customers of Meli bank. A total of 165 pieces of questionnaire papers are given out to the community randomly. We analyzed the data using Structured Equation Modeling (SEM to evaluate the strength of the hypothesized relationships; the results provide support of the integrated TAM, TPB and perceived risk models and confirm its robustness in predicting customers' intention of adoption of mobile banking. The results indicated that the behavioral intention to use mobile banking is positively affected mainly by perceived behavioral control and subjective norm.

  5. Characterisation of carbonate rocks from near-surface cross-hole and reflection GPR investigations - A case study from southeast Zealand, Denmark

    DEFF Research Database (Denmark)

    Nielsen, Lars; Looms, Majken Caroline; Hansen, Thomas Mejer;

    Carbonates found in the near-surface of southeast Zealand, eastern Denmark, are analogous to deposits serving as groundwater and hydrocarbon reservoirs in the Danish region. The study site is located in the Boesdal limestone quarry. A 20 by 20 m area of the bottom of the quarry was levelled using...... a bulldozer, and a grid of 100 MHz and 250 Mhz reflection profiles were collected to facilitate geological interpretation of structures in the uppermost part of the subsurface. Secondly, four 15 m deep boreholes were drilled in a square geometry with side lengths of 5 m. Core material was recovered from...... to facilitate deeper imaging of the carbonates. The section studied with the cross-hole data is water-saturated. Simple 1D modelling of the cross-hole data indicates a strong drop in GPR velocity at 7 to 8 m depth. Different 2D inversion strategies are tested for fine scale resolution of the inter...

  6. Evaluation of a sequencing batch reactor sewage treatment rig for investigating the fate of radioactively labelled pharmaceuticals:case study of propranolol

    OpenAIRE

    Popple, T.; WILLIAMS, J.B.; May, E; Mills, Graham; Oliver, R.

    2016-01-01

    Pharmaceuticals are frequently detected in the aquatic environment, and have potentially damaging effects. Effluents from sewage treatment plants (STPs) are major sources of these substances. The use of sequencing batch reactor (SBR) STPs, involving cycling between aerobic and anoxic conditions to promote nitrification and denitrification, is increasing but these have yet to be understood in terms of removal of pharmaceutical residues. This study reports on the development of a laboratory rig...

  7. An Empirical Investigation of Automated Teller Machines (ATMs)and Customers' Satisfaction in Nigeria: A case study of Ilorin, Kwara State

    OpenAIRE

    Ibrahim Danlami, Mohammed; Richard Mayowa, Dada

    2014-01-01

    The paper examined the impact of Automated Teller Machines (ATMs) on customers’ satisfaction in Ilorin metropolis, the capital city of Kwara state, Nigeria, using three purposively selected commercial banks in the city, that is; First Bank of Nigeria Plc., Guaranty Trust Bank Plc. and First City Monument Bank Plc. The objective is to ascertain the relationship between ATM usage and customers’ satisfaction in Nigeria. The study employed primary data sourced through structured questionnaires as...

  8. An Empirical Study to Investigate the Impact of Social Networking Sites on Student’s Academic Performance and Attitude in Case of Pakistan

    OpenAIRE

    Zahid Hameed; Adnan Maqbool; Naeem Aslam; Ehsan ul Hassan; Maqsood Anwar

    2013-01-01

    The purpose of study is to assess the effect of social networking sites on students’ academic performance and student’s behavior. The variables that determine the use of social networking sites as the independent variable and the dependent variables are students’ academic performance and student’s behavior. The population of this research was the university students of twin cities Rawalpindi and Islamabad (Pakistan). The data was collected through questionnaires, and sample size was 300. The ...

  9. Case Study: del Amo Bioventing

    Science.gov (United States)

    The attached presentation discusses the fundamentals of bioventing in the vadose zone. The basics of bioventing are presented. The experience to date with the del Amo Superfund Site is presented as a case study.

  10. Nasopharyngeal Case-Control Study

    Science.gov (United States)

    A case-control study conducted in Taiwan between 1991-1994 among approximately 1,000 individuals to examine the role of viral, environmental, and genetic factors associated with the development of nasopharyngeal carcinoma

  11. A Generic Individual-Based Spatially Explicit Model as a Novel Tool for Investigating Insect-Plant Interactions: A Case Study of the Behavioural Ecology of Frugivorous Tephritidae.

    Directory of Open Access Journals (Sweden)

    Ming Wang

    Full Text Available Computational modelling of mechanisms underlying processes in the real world can be of great value in understanding complex biological behaviours. Uptake in general biology and ecology has been rapid. However, it often requires specific data sets that are overly costly in time and resources to collect. The aim of the current study was to test whether a generic behavioural ecology model constructed using published data could give realistic outputs for individual species. An individual-based model was developed using the Pattern-Oriented Modelling (POM strategy and protocol, based on behavioural rules associated with insect movement choices. Frugivorous Tephritidae (fruit flies were chosen because of economic significance in global agriculture and the multiple published data sets available for a range of species. The Queensland fruit fly (Qfly, Bactrocera tryoni, was identified as a suitable individual species for testing. Plant canopies with modified architecture were used to run predictive simulations. A field study was then conducted to validate our model predictions on how plant architecture affects fruit flies' behaviours. Characteristics of plant architecture such as different shapes, e.g., closed-canopy and vase-shaped, affected fly movement patterns and time spent on host fruit. The number of visits to host fruit also differed between the edge and centre in closed-canopy plants. Compared to plant architecture, host fruit has less contribution to effects on flies' movement patterns. The results from this model, combined with our field study and published empirical data suggest that placing fly traps in the upper canopy at the edge should work best. Such a modelling approach allows rapid testing of ideas about organismal interactions with environmental substrates in silico rather than in vivo, to generate new perspectives. Using published data provides a saving in time and resources. Adjustments for specific questions can be achieved by

  12. Investigating uranium distribution in surface sediments and waters: a case study of contamination from the Juniper Uranium Mine, Stanislaus National Forest, CA

    International Nuclear Information System (INIS)

    The uranium concentrations and isotopic compositions of waters, sediment leachates and sediments from Red Rock Creek in the Stanislaus National Forest of California were measured to investigate the transport of uranium from a point source (the Juniper Uranium Mine) to a natural surface stream environment. The (234U)/(238U) composition of Red Rock Creek is altered downstream of the Juniper Mine. As a result of mine-derived contamination, water (234U)/(238U) ratios are 67% lower than in water upstream of the mine (1.114–1.127 ± 0.009 in the contaminated waters versus 1.676 in the clean branch of the stream), and sediment samples have activity ratios in equilibrium in the clean creek and out of equilibrium in the contaminated creek (1.041–1.102 ± 0.007). Uranium concentrations in water, sediment and sediment leachates are highest downstream of the mine, but decrease rapidly after mixing with the clean branch of the stream. Uranium content and compositions of the contaminated creek headwaters relative to the mine tailings of the Juniper Mine suggest that uranium has been weathered from the mine and deposited in the creek. The distribution of uranium between sediment surfaces (leachable fraction) and bulk sediment suggests that adsorption is a key element of transfer along the creek. In clean creek samples, uranium is concentrated in the sediment residues, whereas in the contaminated creek, uranium is concentrated on the sediment surfaces (∼70–80% of uranium in leachable fraction). Contamination only exceeds the EPA maximum contaminant level (MCL) for drinking water in the sample with the closest proximity to the mine. Isotopic characterization of the uranium in this system coupled with concentration measurements suggest that the current state of contamination in Red Rock Creek is best described by mixing between the clean creek and contaminated upper branch of Red Rock Creek rather than mixing directly with mine sediment. - Highlights: • High

  13. Theoretical and Experimental Investigation of Thermodynamics and Kinetics of Thiol-Michael Addition Reactions: A Case Study of Reversible Fluorescent Probes for Glutathione Imaging in Single Cells.

    Science.gov (United States)

    Chen, Jianwei; Jiang, Xiqian; Carroll, Shaina L; Huang, Jia; Wang, Jin

    2015-12-18

    Density functional theory (DFT) was applied to study the thermodynamics and kinetics of reversible thiol-Michael addition reactions. M06-2X/6-31G(d) with the SMD solvation model can reliably predict the Gibbs free energy changes (ΔG) of thiol-Michael addition reactions with an error of less than 1 kcal·mol(-1) compared with the experimental benchmarks. Taking advantage of this computational model, the first reversible reaction-based fluorescent probe was developed that can monitor the changes in glutathione levels in single living cells.

  14. Roadmaster Roading Contractors Case Study

    Directory of Open Access Journals (Sweden)

    Hazel Taylor

    1999-01-01

    Full Text Available Systems analysis students seldom experience the practical difficulties of the initial investigation into a client’s requirements. They get little chance to practice the skills they need to investigate complex and confused problem situations, or to appreciate the wider organizational issues that can impact on a situation. This teaching case is designed to give students the opportunity to practice and apply investigation skills and to challenge them to consider the wider work environment when considering possible solutions to a problem situation. The case is conducted as a role-play, with students acting as systems analysts and teaching staff role-playing the clients. The students develop a report analyzing the client’s situation based on the issues that arise during the interviews. Feed-back sessions focus on discussing how well the students applied various interviewing strategies previously covered in lectures, and on the wider organizational problems that could impact proposed information system solutions.

  15. Investigate the Relationship of Learning Orientation with Innovation and Organizational Performance of SMEs in the Province of Kurdistan, Iran (Case Study: Food Industry

    Directory of Open Access Journals (Sweden)

    Yosra Salehi

    2016-07-01

    Full Text Available The ability to learnavitalfactorforthe organization togrowandbeinnovator.The importance ofinnovationtosurvive of organizationin changingenvironmentgenerallyis acceptedbyeveryone.Among theseorganizationswill be successful, thatcan achieve success and sustainable growthwith identifytheir success factorsin times of crisis. Organizationalbackgroundsshowthatorganizationallearningplays a vital rolein the development ofcompanies andincreasethe potential forinnovationandperformance. In this study,the relationship betweenorganizational learning and innovationandorganizational performance andledto the conclusionthatorganizationallearninghoweffects on innovationand organizationalperformance. Variousmodelshave been proposedin theresearch literaturethat has been created by statistical dataobtained from thecompanies. The proposed model, of the projecthas threeaspects including: organizational commitmenttolearning open-mindedness andcommonvision andismeasuredby20items. Scalesbythe results,fromdatacollected from246foodindustrysubIndustrial EstatesKurdistanprovincehave beenvalid.152valid questionnaireswere collected andto testthe research model usedspss software.As a result, the proposedscale provide, useful information formanagers toincreaseorganizationallearningintheir organizations and the resultsshowedthatorganizationallearningis a significantpositive effectson innovationandorganizational performance

  16. Geo-electrical investigation of near surface conductive structures suitable for groundwater accumulation in a resistive crystalline basement environment: A case study of Isuada, southwestern Nigeria

    Science.gov (United States)

    Kayode, J. S.; Adelusi, A. O.; Nawawi, M. N. M.; Bawallah, M.; Olowolafe, T. S.

    2016-07-01

    This paper presents a geophysical surveying for groundwater identification in a resistive crystalline basement hard rock in Isuada area, Southwestern Nigeria. Very low frequency (VLF) electromagnetic and electrical resistivity geophysical techniques combined with well log were used to characterize the concealed near surface conductive structures suitable for groundwater accumulation. Prior to this work; little was known about the groundwater potential of this area. Qualitative and semi-quantitative interpretations of the data collected along eight traverses at 20 m spacing discovered conductive zones suspected to be fractures, faults, and cracks which were further mapped using Vertical Electrical Sounding (VES) technique. Forty VES stations were utilized using Schlumberger configurations with AB/2 varying from 1 to 100 m. Four layers i.e. the top soil, the weathered layer, the partially weathered/fractured basement and the fresh basement were delineated from the interpreted resistivity curves. The weathered layers constitute the major aquifer unit in the area and are characterized by moderately low resistivity values which ranged between about 52 Ωm and 270 Ωm while the thickness varied from 1 to 35 m. The depth to the basement and the permeable nature of the weathered layer obtained from both the borehole and the hand-dug wells was used to categorize the groundwater potential of the study area into high, medium and low ratings. The groundwater potential map revealed that about 45% of the study area falls within the low groundwater potential rating while about 10% constitutes the medium groundwater potential and the remaining 45% constitutes high groundwater potential. The low resistivity, thick overburden, and fractured bedrock constitute the aquifer units and the series of basement depressions identified from the geoelectric sections as potential conductive zones appropriate for groundwater development.

  17. Geospatial Investigation into Groundwater Pollution and Water Quality Supported by Satellite Data: A Case Study from the Evros River (Eastern Mediterranean)

    Science.gov (United States)

    Elias, Dimitriou; Angeliki, Mentzafou; Vasiliki, Markogianni; Maria, Tzortziou; Christina, Zeri

    2014-06-01

    Managing water resources, in terms of both quality and quantity, in transboundary rivers is a difficult and challenging task that requires efficient cross-border cooperation and transparency. Groundwater pollution risk assessment and mapping techniques over the full catchment area are important tools that could be used as part of these water resource management efforts, to estimate pollution pressures and optimize land planning processes. The Evros river catchment is the second largest river in Eastern Europe and sustains a population of 3.6 million people in three different countries (Bulgaria, Turkey and Greece). This study provides detailed information on the main pollution sources and pressures in the Evros catchment and, for the first time, applies, assesses and evaluates a groundwater pollution risk mapping technique using satellite observations (Landsat NDVI) and an extensive dataset of field measurements covering different seasons and multiple years. We found that approximately 40 % of the Greek part of the Evros catchment is characterized as of high and very high pollution risk, while 14 % of the study area is classified as of moderate risk. Both the modeled and measured water quality status of the river showed large spatiotemporal variations consistent with the strong anthropogenic pressures in this system, especially on the northern and central segments of the catchment. The pollutants identified illustrate inputs of agrochemicals and urban wastes in the river. High correlation coefficients ( R between 0.79 and 0.85) were found between estimated pollution risks and measured concentrations of those chemical parameters that are mainly attributed to anthropogenic activities rather than in situ biogeochemical processes. The pollution risk method described here could be used elsewhere as a decision support tool for mitigating the impact of hazardous human activities and improving management of groundwater resources.

  18. Experimental investigation and modelling approach of the impact of urban wastewater on a tropical river; a case study of the Nhue River, Hanoi, Viet Nam

    Science.gov (United States)

    Duc, Trinh Anh; Vachaud, Georges; Bonnet, Marie Paule; Prieur, Nicolas; Loi, Vu Duc; Anh, Le Lan

    2007-02-01

    SummaryAnalyses of water quality and flow regime in combination with laboratory studies and ecological modelling were used to assess the water quality impact of pollution from to To Lich River that drains through Hanoi City and greatly contaminates the Nhue River. With an average discharge of 26.2 m 3/s, the Nhue River receives about 5.8 m 3/s of untreated domestic water from the city's main open-air-sewer - the To Lich River. The studies during 2002-2003 showed high concentrations of BOD (70 mg O 2/l), DOC (15 mg C/l), coliform (2.4e 6 MNP/100 ml), total phosphorus (3.5 mg P/l), and total nitrogen (31.6 mg N/l) in the To Lich, while DO level was less than 1 mg O 2/l. Such high loads of untreated wastewater impacted water quality in the Nhue River where DO decreased at times to as low as 1 mg O 2/l. The accumulation of particulate organic matter and micro-organisms in the sediments of the Nhue represented substantial sources of nutrients and sinks for DO. They are also considerable production of dissolved carbon dioxide at concentrations up to two orders of magnitude higher than pressure. Such pressures ( EpCO 2) are expected in polluted environments, but the results presented here are new for Vietnam and much of developing countries. A number of factors linked to field monitoring and laboratory measurements clearly indicate the importance of autotrophic over heterotrophic biological processes and sediments. An ecological model for management purposes has been developed that reliably estimates of the pollutant loads. An opportunity was taken to examine the changing impacts and processes when the To Lich was diverted from the Nhue. The monitoring and modelling of this opportunity showed low dissolved oxygen levels even if the impact from the To Lich was lessened. Alternatives are proposed to alleviate problems of water quality in the Nhue. It is concluded that the treatment of the To Lich River's water is highly recommended; otherwise a reduction to one third of

  19. Investigation of casing connection failure mechanisms in thermal wells

    Energy Technology Data Exchange (ETDEWEB)

    Xie, J. [C-FER Technologies, Edmonton, AB (Canada)

    2009-07-01

    Thermal well technologies use casing strings that consist of casing joints linked by threaded connections that are cemented over the wellbore's length in order to provide structural support and hydraulic isolation to the wellbore. Studies have demonstrated that over 80 per cent of uphole casing failures occur at the casing joint connections, and are caused by thread rupture or structural damage. This study discussed thermal well failures related to casing connection damage. Finite element analyses (FEA) were then conducted to consider various critical load conditions with a generic premium casing connection. The study considered structural integrity losses, fatigue, and leakage during connection installation. Results of the study were then used to optimize casing connection designs. The study showed that thermal cycle and curvature loading can have an impact on the structural and sealing performance of premium connections. Connection structural performance should be evaluated in order to determine appropriate designs for thermal well applications. It was concluded that the connection shoulder region is a critical area for material fatigue failure. 12 refs., 9 figs.

  20. Investigation of the industrial clusters in Islamic Republic of Iran (Case Study of Yazd city usinglocal production systems method &Industry Perception Model

    Directory of Open Access Journals (Sweden)

    Seyed Valiollah MirHosseini

    2011-10-01

    Full Text Available All countries hope to achieve increasingly developments which grow fast. Nowadays many developed countries are using strategy of industrial clusters development because they influence the competitiveness of industrial clusters in the country as well as beyond national borders and show new ways of thinking about the place of dealing and earning. Industrial clusters influence competition through increasing of productivity based on settlement of companies and providing quick guidelines for development and innovation and encouraging of new business. Industrial cluster is one of new combined methods of various theories such as theory of economic geography, regional economics, national innovation system, transmitting knowledge theories, social capital theories and social networks .Recently this method in Iran attracted many attentions based on industries compatible with mentioned method which attempts to provide a better and competitive market place for the country, region and the world. In this study literature of industrial clusters is initially reviewed and then data analysis methods, used model and eventually results of this paper will be dealt with.

  1. Application of GPS Trajectory Data for Investigating the Interaction between Human Activity and Landscape Pattern: A Case Study of the Lijiang River Basin, China

    Directory of Open Access Journals (Sweden)

    Jun Li

    2016-06-01

    Full Text Available The interaction between human activity and landscape pattern has been a hot research topic during the last few decades. However, scholars used to measure human activity by social, economic and humanistic indexes. These indexes cannot directly reflect human activity and are not suitable for fine-grained analysis due to the coarse spatial resolution. In view of the above problems, this paper proposes a method that obtains the intensity of human activity from GPS trajectory data, collects landscape information from remote sensing images and further analyzes the interaction between human activity and landscape pattern at a fine-grained scale. The Lijiang River Basin is selected as the study area. Experimental results show that human activity and landscape pattern interact synergistically in this area. Built-up land and water boost human activity, while woodland restrains human activity. The effect of human activity on landscape pattern differs by the land cover category. Overall, human activities make natural land, such as woodland and water, scattered and fragmented, but cause man-built land, such as built-up land and farmland, clustered and regular. Nevertheless, human activities inside and outside urban areas are the opposite. The research findings in this paper are helpful for designing and implementing sustainable management plans.

  2. Sediment Transport Along the Coast of Israel: Examination of Fluorescent Sand Tracers [Case Study: Fluorescent Tracer Applications for Sediment Transport Investigations

    International Nuclear Information System (INIS)

    The method of labeled natural sand particles was used to study sediment transport along the central Mediterranean coast of Israel. Six portions of 300 kg each were tagged with various fluorescent colors, and distributed at six different locations in the vicinity of the Herzliya Marina. The tagged sand was scattered at the end of autumn, and sampled three times during the winter. Sampling was interrupted in mid-January because of unexpected dredging at the marina canal entrance. The samples were analyzed at the Yigal Allon Kinneret Limnological Laboratory. The wave climate during that time was analyzed using wave data from Ashdod (40 km south). Seven wave storms with significant wave heights of over 2.5 m were observed. Two of them clearly indicate a dominant direction from the southwest and two others from the northwest. However, the time durations and the relative angles between the wave directions and the orthogonal to the coast of the storms propagating from the southwest are essentially larger than those arriving from the northwest. The following results were noted: (i) The drift of tagged sand particles correlated to longshore sediment transport at all depths was in a northern direction throughout the field experiment. The longest distance of transport was 5 km over a period of 86 days. (ii) ''Onshore'' sediment transport was present; sand from 15 m depth was found at 8 m depth. (iii) The cross-shore sediment transport carried sand to a depth of 8 m, but no colored sand from shallow water (2-4 m) was found deeper than 8 m. (iv) Although sedimentation at the marina entrance during the experiment was high, only small amounts of tagged sand were found at the entrance. (v) Findings of tagged sand showed the main area of sedimentation to be along the marina's main breakwater. (author)

  3. A Novel, Unbiased Analysis Approach for Investigating Population Dynamics: A Case Study on Calanus finmarchicus and Its Decline in the North Sea

    Science.gov (United States)

    Papworth, Danny J.; Marini, Simone; Conversi, Alessandra

    2016-01-01

    Marine populations are controlled by a series of drivers, pertaining to both the physical environment and the biological environment (trophic predator-prey interactions). There is heated debate over drivers, especially when trying to understand the causes of major ecosystem events termed regime shifts. In this work, we have researched and developed a novel methodology based on Genetic Programming (GP) for distinguishing which drivers can influence species abundance. This methodology benefits of having no a priori assumptions either on the ecological parameters used or on the underlying mathematical relationships among them. We have validated this methodology applying it to the North Sea pelagic ecosystem. We use the target species Calanus finmarchicus, a key copepod in temperate and subarctic ecosystems, along with 86 biological, hydrographical and climatic time series, ranging from local water nutrients and fish predation, to large scale climate pressure patterns. The chosen study area is the central North Sea, from 1972 to 2011, during which period there was an ecological regime shift. The GP based analysis identified 3 likely drivers of C. finmarchicus abundance, which highlights the importance of considering both physical and trophic drivers: temperature, North Sea circulation (net flow into the North Atlantic), and predation (herring). No large scale climate patterns were selected, suggesting that when there is availability of both data types, local drivers are more important. The results produced by the GP based procedure are consistent with the literature published to date, and validate the use of GP for interpreting species dynamics. We propose that this methodology holds promises for the highly non-linear field of ecology. PMID:27366910

  4. A Novel, Unbiased Analysis Approach for Investigating Population Dynamics: A Case Study on Calanus finmarchicus and Its Decline in the North Sea.

    Science.gov (United States)

    Papworth, Danny J; Marini, Simone; Conversi, Alessandra

    2016-01-01

    Marine populations are controlled by a series of drivers, pertaining to both the physical environment and the biological environment (trophic predator-prey interactions). There is heated debate over drivers, especially when trying to understand the causes of major ecosystem events termed regime shifts. In this work, we have researched and developed a novel methodology based on Genetic Programming (GP) for distinguishing which drivers can influence species abundance. This methodology benefits of having no a priori assumptions either on the ecological parameters used or on the underlying mathematical relationships among them. We have validated this methodology applying it to the North Sea pelagic ecosystem. We use the target species Calanus finmarchicus, a key copepod in temperate and subarctic ecosystems, along with 86 biological, hydrographical and climatic time series, ranging from local water nutrients and fish predation, to large scale climate pressure patterns. The chosen study area is the central North Sea, from 1972 to 2011, during which period there was an ecological regime shift. The GP based analysis identified 3 likely drivers of C. finmarchicus abundance, which highlights the importance of considering both physical and trophic drivers: temperature, North Sea circulation (net flow into the North Atlantic), and predation (herring). No large scale climate patterns were selected, suggesting that when there is availability of both data types, local drivers are more important. The results produced by the GP based procedure are consistent with the literature published to date, and validate the use of GP for interpreting species dynamics. We propose that this methodology holds promises for the highly non-linear field of ecology. PMID:27366910

  5. Investigation of Tsunami Effects on Harbor Structures with High Resolution Tsunami Modeling: Case study in the Biggest Port of Turkey in Istanbul

    Science.gov (United States)

    Ozer Sozdinler, Ceren; Arikawa, Taro; Meral Ozel, Nurcan; Necmioglu, Ocal; Cevdet Yalciner, Ahmet; Zaytsev, Andrey; Tomita, Takashi

    2015-04-01

    evaluated and used for the determination of structural resilience against tsunami waves and having a better understanding of tsunami preparedness and mitigation in ports and harbors. Acknowledgement: This study is supported by SATREPS-MarDim Project (Earthquake and Tsunami Disaster Mitigation in the Marmara Region and Disaster Education in Turkey) and JICA (Japan International Cooperation Agency). The authors would like to acknowledge Ms. Basak Firat and Hiroko Kitazume for their valuable efforts and contributions.

  6. Sternocleidomastoid syndrome: a case study

    OpenAIRE

    Missaghi, Babak

    2004-01-01

    This article presents a case study of a patient diagnosed with dysfunction of the sternocleidomastoid (SCM) muscle, a condition which can result in head and face pain, nausea, dizziness, coryza, and lacrimation. In this particular case, the SCM muscle had developed tightness and weakness with presence of multiple trigger points within both heads. A combination of passive and active treatments were utilized to successfully treat this condition.

  7. Case study in professionally-oriented training

    Directory of Open Access Journals (Sweden)

    Valitov Shamil M.

    2016-01-01

    Full Text Available Modern educational technologies are based on competence approach and focus on the future professional activity. Case study is one of the most significant technologies in modern higher education. The basic concepts used in the case study method are a “situation” and an “analysis”, as well as their derivative - “analysis of the situation”. The case study method of is one of the best tools for gaining experience, as it investigates practical situations that occur in managerial job. It combines theoretical knowledge with the analysis of the actual practical experience in accordance with a major. Doing case studies students read the description of the situation and offer divergent projects of managerial decisions that could be used by real managers dealing with the problem posed by the case study author. Answers to the questions posed in the case description are not given, as a rule, since the main purpose in the case analysis is to organize a discussion in the classroom or provoke speculations of those who do the self-study.

  8. The Toxicology Investigators Consortium Case Registry--the 2012 experience.

    Science.gov (United States)

    Wiegand, Timothy; Wax, Paul; Smith, Eric; Hart, Katherine; Brent, Jeffrey

    2013-12-01

    In 2010, the American College of Medical Toxicology (ACMT) established its Case Registry, the Toxicology Investigators Consortium (ToxIC). All cases are entered prospectively and include only suspected and confirmed toxic exposures cared for at the bedside by board-certified or board-eligible medical toxicologists at its participating sites. The primary aims of establishing this Registry include the development of a realtime toxico-surveillance system in order to identify and describe current or evolving trends in poisoning and to develop a research tool in toxicology. ToxIC allows for extraction of data from medical records from multiple sites across a national and international network. All cases seen by medical toxicologists at participating institutions were entered into the database. Information characterizing patients entered in 2012 was tabulated and data from the previous years including 2010 and 2011 were included so that cumulative numbers and trends could be described as well. The current report includes data through December 31st, 2012. During 2012, 38 sites with 68 specific institutions contributed a total of 7,269 cases to the Registry. The total number of cases entered into the Registry at the end of 2012 was 17,681. Emergency departments remained the most common source of consultation in 2012, accounting for 61 % of cases. The most common reason for consultation was for pharmaceutical overdose, which occurred in 52 % of patients including intentional (41 %) and unintentional (11 %) exposures. The most common classes of agents were sedative-hypnotics (1,422 entries in 13 % of cases) non-opioid analgesics (1,295 entries in 12 % of cases), opioids (1,086 entries in 10 % of cases) and antidepressants (1,039 entries in 10 % of cases). N-acetylcysteine (NAC) was the most common antidote administered in 2012, as it was in previous years, followed by the opioid antagonist naloxone, sodium bicarbonate, physostigmine and flumazenil. Anti-crotalid Fab

  9. The Toxicology Investigators Consortium Case Registry--the 2012 experience.

    Science.gov (United States)

    Wiegand, Timothy; Wax, Paul; Smith, Eric; Hart, Katherine; Brent, Jeffrey

    2013-12-01

    In 2010, the American College of Medical Toxicology (ACMT) established its Case Registry, the Toxicology Investigators Consortium (ToxIC). All cases are entered prospectively and include only suspected and confirmed toxic exposures cared for at the bedside by board-certified or board-eligible medical toxicologists at its participating sites. The primary aims of establishing this Registry include the development of a realtime toxico-surveillance system in order to identify and describe current or evolving trends in poisoning and to develop a research tool in toxicology. ToxIC allows for extraction of data from medical records from multiple sites across a national and international network. All cases seen by medical toxicologists at participating institutions were entered into the database. Information characterizing patients entered in 2012 was tabulated and data from the previous years including 2010 and 2011 were included so that cumulative numbers and trends could be described as well. The current report includes data through December 31st, 2012. During 2012, 38 sites with 68 specific institutions contributed a total of 7,269 cases to the Registry. The total number of cases entered into the Registry at the end of 2012 was 17,681. Emergency departments remained the most common source of consultation in 2012, accounting for 61 % of cases. The most common reason for consultation was for pharmaceutical overdose, which occurred in 52 % of patients including intentional (41 %) and unintentional (11 %) exposures. The most common classes of agents were sedative-hypnotics (1,422 entries in 13 % of cases) non-opioid analgesics (1,295 entries in 12 % of cases), opioids (1,086 entries in 10 % of cases) and antidepressants (1,039 entries in 10 % of cases). N-acetylcysteine (NAC) was the most common antidote administered in 2012, as it was in previous years, followed by the opioid antagonist naloxone, sodium bicarbonate, physostigmine and flumazenil. Anti-crotalid Fab

  10. Kenya Groundwater Governance Case Study

    OpenAIRE

    Mumma, Albert; Lane, Michael; Kairu, Edward; Tuinhof, Albert; Hirji, Rafik

    2011-01-01

    This report presents a case study on groundwater governance in Kenya. The objectives of the study were to: (a) describe groundwater resource and socioeconomic settings for four selected aquifers; (b) describe governance arrangements for groundwater management in Kenya; and (c) identify the relevance of these arrangements for planning and implementing climate change mitigation measures. The ...

  11. Investigation of Energy-Efficient Supermarket Display Cases

    Energy Technology Data Exchange (ETDEWEB)

    Walker, D.H.

    2005-01-21

    contributing about 3/4 of that fraction. Consequently, the focus of this investigation has tilted toward the open, vertical, multi-deck medium temperature case type. Various technologies and control methods are energy efficiency measures (EEMs) that could be applied to display cases and result in the reduction of the refrigeration load and of the energy consumption of the supermarket refrigeration system. An extensive evaluation of the EEMs was conducted in order to select those that met the following criteria: (1) Near-term implementation--All EEMs considered could be implemented with existing refrigeration hardware and technology. (2) Potential for energy-efficiency improvements--Energy savings and/or refrigeration load reduction must be obtained by the implementation of the EEM. (3) Enhancement of the ability to maintain target product temperature--Proper operation of the display case and maintenance of the stored product temperature could not be compromised by the use of the EEM. The energy impact of a number of viable display case EEMs was quantified by performing whole building hourly simulations. A special version of the U.S. Department of Energy's (DOE-2.3) program was used to develop a model of a supermarket. The model was then calibrated using available end-use monitored data to increase confidence in simulation results.

  12. Plasma carotenoids, vitamin C, retinol and tocopherols levels and pancreatic cancer risk within the European Prospective Investigation into Cancer and Nutrition: a nested case-control study: plasma micronutrients and pancreatic cancer risk.

    Science.gov (United States)

    Jeurnink, Suzanne M; Ros, Martine M; Leenders, Max; van Duijnhoven, Franzel J B; Siersema, Peter D; Jansen, Eugene H J M; van Gils, Carla H; Bakker, Marije F; Overvad, Kim; Roswall, Nina; Tjønneland, Anne; Boutron-Ruault, Marie-Christine; Racine, Antoine; Cadeau, Claire; Grote, Verena; Kaaks, Rudolf; Aleksandrova, Krasimira; Boeing, Heiner; Trichopoulou, Antonia; Benetou, Vasiliki; Valanou, Elisavet; Palli, Domenico; Krogh, Vittorio; Vineis, Paolo; Tumino, Rosario; Mattiello, Amalia; Weiderpass, Elisabete; Skeie, Guri; Castaño, José María Huerta; Duell, Eric J; Barricarte, Aurelio; Molina-Montes, Esther; Argüelles, Marcial; Dorronsoro, Mire; Johansen, Dorthe; Lindkvist, Björn; Sund, Malin; Crowe, Francesca L; Khaw, Kay-Tee; Jenab, Mazda; Fedirko, Veronika; Riboli, E; Bueno-de-Mesquita, H B

    2015-03-15

    Evidence of a protective effect of several antioxidants and other nutrients on pancreatic cancer risk is inconsistent. The aim of this study was to investigate the association for prediagnostic plasma levels of carotenoids, vitamin C, retinol and tocopherols with risk of pancreatic cancer in a case-control study nested within the European Prospective Investigation into Cancer and Nutrition (EPIC). 446 incident exocrine pancreatic cancer cases were matched to 446 controls by age at blood collection, study center, sex, date and time of blood collection, fasting status and hormone use. Plasma carotenoids (α- and β-carotene, lycopene, β-cryptoxanthin, canthaxanthin, zeaxanthin and lutein), α- and γ-tocopherol and retinol were measured by reverse phase high-performance liquid chromatography and plasma vitamin C by a colorimetric assay. Incidence rate ratios (IRRs) with 95% confidence intervals (95%CIs) for pancreatic cancer risk were estimated using a conditional logistic regression analysis, adjusted for smoking status, smoking duration and intensity, waist circumference, cotinine levels and diabetes status. Inverse associations with pancreatic cancer risk were found for plasma β-carotene (IRR highest vs. lowest quartile 0.52, 95%CI 0.31-0.88, p for trend = 0.02), zeaxanthin (IRR highest vs. lowest quartile 0.53, 95%CI 0.30-0.94, p for trend = 0.06) and α-tocopherol (IRR highest vs. lowest quartile 0.62, 95%CI 0.39-0.99, p for trend = 0.08. For α- and β-carotene, lutein, sum of carotenoids and γ-tocopherol, heterogeneity between geographical regions was observed. In conclusion, our results show that higher plasma concentrations of β-carotene, zeaxanthin and α-tocopherol may be inversely associated with risk of pancreatic cancer, but further studies are warranted.

  13. eCompetence Case Studies

    DEFF Research Database (Denmark)

    Jensen, Helle Bækkelund

    2006-01-01

    In this paper we present some details of the processes undertaken in the European eCompetence Initiative. We present two illustrative and representative case studies. The research aims to identify and understand patterns of individual and organisational eCompetence approaches.......In this paper we present some details of the processes undertaken in the European eCompetence Initiative. We present two illustrative and representative case studies. The research aims to identify and understand patterns of individual and organisational eCompetence approaches....

  14. Case Study on Logistics Performance

    Directory of Open Access Journals (Sweden)

    Shahryar Sorooshian

    2013-05-01

    Full Text Available The paper presents research carried out at a medium‐size manufacturing organization in east Asia. The study tries to highlight the importance of supply chain management; specifically, our aim for this study is to understand logistics and performance measurement in the logistics and supply chain, and we include a theoretical discussion of online data collected and a case study of the logistic performance of a real organization. The study also examines the performance of the selected company, identifies the problems and provides recommendations for improvements. This study can be a guide for business advisers and those interested in analysing company performance, especially from a logistics viewpoint. We also suggest the methodology of this case study for those who want to have a better understanding of a business environment before starting their own business, or for benchmarking practice during strategic planning.

  15. Case cancellations on the day of surgery : an investigation in an Australian paediatric hospital

    NARCIS (Netherlands)

    Haana, Victoria; Sethuraman, Kannan; Stephens, Lisa; Rosen, Heather; Meara, John G.

    2009-01-01

    Background: This study investigates case cancellations on the intended day of surgery (DOS) at a paediatric hospital in Melbourne, Australia. The hospital in Melbourne treats over 32 000 inpatients annually and handles both elective and emergency cases. Methods: The data for this paper were collecte

  16. Case Studies in Sports Nutrition.

    Science.gov (United States)

    Clark, Nancy

    1988-01-01

    This article presents case studies of two athletes who wanted to affect a change in their body weight in order to enhance athletic performance. Each athlete's problem and the nutrition approach used to solve it are discussed. Caloric values of fast foods are listed. (JL)

  17. The reflexive case study method

    DEFF Research Database (Denmark)

    Rittenhofer, Iris

    2015-01-01

    This paper extends the international business research on small to medium-sized enterprises (SME) at the nexus of globalization. Based on a conceptual synthesis across disciplines and theoretical perspectives, it offers management research a reflexive method for case study research of postnational...

  18. Investigations of impact biomechanics for penetrating ballistic cases.

    Science.gov (United States)

    Awoukeng-Goumtcha, A; Taddei, L; Tostain, F; Roth, S

    2014-01-01

    This study aims to investigate the penetration of a projectile into a surrogate human tissue numerically, using Finite Element (FE) simulation. 20% Balistic Gelatin material (BG) is simulated with an elasto-plastic hydrodynamic constitutive law, and then impacted by steel spheres at different velocities. The results from the FE simulations are compared with existing experimental data and other analytical equations from the literature. To our knowledge, this is the first study to investigate a projectile penetration by numerical simulation, and then compare the results with analytical and experimental data from previous studies. This developed model gives encouraging results for further investigations of penetrating impact of projectile in the human body. PMID:25226933

  19. An investigation into the effects of iPad/tablet device use in special education and in particular in the case of a student with Williams Syndrome: a case study approach

    OpenAIRE

    Kelliher, Deirdre

    2013-01-01

    non-peer-reviewed Williams Syndrome is a rare neurodevelopmental genetic disorder that is associated with a particular uneven cognitive profile. The student with Williams Syndrome at the centre of this investigation is six years old and attends senior infants in a primary mainstream school setting in the west of Ireland. In common with other children with Williams Syndrome, the student experiences difficulty with number concepts and gross and fine motor skills, including handwriting. Diffi...

  20. Investigating Language and the Media: The Case of Newswriting

    Science.gov (United States)

    Perrin, Daniel

    2013-01-01

    Drawing on a case study of newswriting, this article presents media linguistics as a subdiscipline of applied linguistics (AL), dealing with a distinctive field of language use. Language in the media is characterized by specific environments, functions, and structures. Medialinguistic research, however, tends to overcome disciplinary boundaries.…

  1. Magnetic investigations for studying planetary interiors

    Directory of Open Access Journals (Sweden)

    A. De Santis

    1994-06-01

    Full Text Available Most of the magnetic methods used for investigating planetary interiors are based on the reasonable hypothesis that the mechanism for the origin of the field is an Earth-like hydromagnetic dynamo: in this case the planet has an electrically conducting fluid shell within it as in the case of the Earth's core. The present paper describes several techniques of planetary magnetic investigation which give important clues on the internal constitution of planets. Some considerations on the possible mechanisms for maintaining a dynamo and simple concepts with the help of a few non-dimensional numbers are also introduced and discussed. Then some fundamental relationships are given in order to relate the planetary magnetism to other physical parameters, such as angular rotation, core dimensions etc. It finally summarizes some results available for the planets of the Solar System.

  2. Investigating the Jack the Ripper Case: Engaging Students in a Criminal Investigations Class through Active Learning

    Science.gov (United States)

    Gutierrez, Daniel; Kazmi, Syed

    2010-01-01

    The present study examines the utilization of a class project involving the Jack the Ripper murders. Students enrolled in a criminal investigations class were required to investigate the five canonical murders associated with the infamous serial killer known as Jack the Ripper and the murders that occurred in London during 1888. This paper…

  3. A case study of Impetigo

    Directory of Open Access Journals (Sweden)

    Mansouri P

    1993-05-01

    Full Text Available This is a report of a case study on 234 patients with impetigo who referred to Razi Dermatology Hospital from April to November, 1989. Treatment was started immediately after obtaining direct smear and performing culture and antibiotic sensitivity test. The most common organism responsible for impetigo was the coagulase-positive staphylococcus (71%. In 13.7% of the cases, the coagulase-negative staphylococcus was grown on culture media, but none of the cultures showed streptococcus as the main organism. Treatment was started with oral penicillin V, oral erythromycin, benzathine penicillin G injection, oral cephalexin, and topical fuccidin. Clinical and bacteriological evaluation after 3-7 days showed that it is preferable to use oral cephalexin instead of other protocols such as oral erythromycin, which has previously been the drug of choice for impetigo. In addition, topical fuccidin with a 75% curative rate was the first drug for treatment, with the same effect as the oral cephalexin

  4. Gamification in teaching music : case study

    OpenAIRE

    Gomes, Cristina; Figueiredo, Mauro; Bidarra, José

    2014-01-01

    The study presented here aims to assess the quality of learning that occurred by the introduction of an educational application in the teaching/learning process of music education – 2nd cycle of basic education. The investigation focused on the use of a set of multimedia materials designed to provide support for instrumental practice (recorder and guitar) and backing vocals, according to the technique of the sing along. The students had access to the materials in two ways: in the first case, ...

  5. Case-control design as investigative approach to assessing cancer etiology: development and future perspectives.

    Science.gov (United States)

    Kocic, B; Filipovic, S; Petrovic, B; Nikolic, M

    2012-01-01

    The case-control method evolved out of analyses of series of cases. The analytic form of the case-control study can be found in the 19th century medical literature, but did not appear to be viewed as a special or distinct methodology. The first modern case-control study was the Janet Lane-Claypon's study of breast cancer in 1926, but the design was used only sporadically in medicine until 1950, when 4 published casecontrol studies linked smoking and lung cancer. These 1950s studies synthesized the essential elements of the case-control comparison, produced a conceptual shift within epidemiology, and laid the foundation for the rapid development of the case-control design in the subsequent half century. The powerful consistency of these case-control studies, and the replication of their findings in later prospective studies, promoted the general acceptance of the case-control study as a scientific tool in clinical research. Newer case-control studies have benefited from the advances in design, execution and analysis since 1950s. These advances include more rigorous selection and matching of case and control population, improved interviewing techniques, location of the design within a general framework of epidemiologic strategies for relating exposure to disease, understanding of the measures of effect, and application of increasingly sophisticated statistical procedures to findings. This review traces the development and future perspectives of the case-control design to assessing cancer etiology. With illustrations drawn primarily from the literature on its use and the value of its results to unravelling the etiology of malignant diseases, we tried to explore if the case-control approach firmly ensconced in epidemiology as investigational tool and rivals in importance the more straightforward cohort approach. PMID:23033277

  6. TEACHER BELIEFS: A CASE STUDY

    Institute of Scientific and Technical Information of China (English)

    HuYijie

    2004-01-01

    In recent years ELT has stressed the role which teachers' beliefs play in shaping what they do in the classroom. But so far as teaching English in China is concerned, we lack empirical insight into the relationship between teachers' beliefs and their classroom practice. With specific reference to the use of English in intensive reading classes, by presenting and discussing data from a case study of a non-native college English teacher,this exploratory qualitative classroom research sheds light on the nature of teachers' beliefs held consciously or unconsciously.Their subsequent change and impact on the classroom will also be reported and discussed.

  7. Using correspondence analysis in multiple case studies

    NARCIS (Netherlands)

    Kienstra, N.H.H.; van der Heijden, P.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 thi

  8. 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 thi

  9. A parathyroid scintigraphy case study

    Energy Technology Data Exchange (ETDEWEB)

    O' Leary, Desiree [UCD School of Diagnostic Imaging, St Anthony' s Campus, Herbert Avenue, Dublin 4 (Ireland)]. E-mail: desiree.oleary@ucd.ie

    2005-05-01

    Background: There has been much debate concerning the most suitable protocol for parathyroid scintigraphy; the merits of various radiopharmaceuticals versus the correct imaging protocol to visualise both ectopic and anatomically placed adenomas against the various equipment choices have been debated. Aim: To demonstrate, through the use of a case study, the necessity of changing imaging protocols for parathyroid scintigraphy where a definitive imaging diagnosis is absent in the face of strong clinical suspicion. Method: Use is made of Tc99mMIBI, full field chest scintigraphy, a clearly defined imaging protocol and SPECT imaging to locate ectopic parathyroid tissue in a female patient with significant symptoms of parathyroid hyperfunction. Results: A single hyperfunctioning adenoma is located in the pre-carinal area of the mediastinum. Using a radioguided surgical technique the hyperfunctioning tissue is excised and confirmed by histopathology. Conclusion: Whilst a dramatic reduction in patient symptoms was not seen immediately in this patient, the symptoms of the illness have been subsiding since January 2003. This case study demonstrates the necessity of changing imaging protocols for parathyroid scintigraphy where a definitive imaging diagnosis is absent in the face of strong clinical suspicion.

  10. Recurrent perinatal loss: a case study.

    Science.gov (United States)

    Kavanaugh, K; Robertson, P A

    1999-01-01

    To date, investigators have not demonstrated a clear relationship between a parent's history of prior perinatal losses and intensity of grief response following a subsequent perinatal loss. Examining this relationship for low-income, African-American parents is important because they are a vulnerable population due to the high incidence of perinatal mortality in Blacks and their other life stressors that can impact on grief response and caring needs. The purpose of this case study was to examine the impact of recurrent perinatal loss on a low-income African-American parent. The research design for this study was case report, using interview data collected from a mother who had recently experienced her fourth perinatal loss, which occurred at twenty-five weeks of gestation. Transcripts from two open-ended interviews were analyzed. The theoretical framework used to guide analysis of this case study was Lazarus and Folkman's stress and coping theory. Results demonstrated that the prior perinatal losses did not appear as critical components of the way the mother responded to her most recent loss. Instead, perception of the care she received from healthcare providers and how that care related to her experiences with her one living child who was born at the same gestational age was an important determinant in how she responded to her loss. The results of this case study demonstrate the importance assessing a person's perception of their experience and those factors which contribute to the way they respond.

  11. Antiphospholipid syndrome: A case study

    Energy Technology Data Exchange (ETDEWEB)

    Davies, T. [Royal Adelaide Hospital, Adelaide, SA (Australia). Department of Nuclear Medicine

    1998-03-01

    Full text: A forty-two-year-old male presented to the Royal Adelaide Hospital with symptoms of increasing shortness of breath, swelling in both ankles, petechial rash and blood in his sputum. Initial investigations showed cardiomegaly, right ventricular hypertrophy, patchy lung infiltrates, a platelet count of 1500 and a clotting time of 60 seconds. A V/Q scan indicated a high probability of pulmonary embolism. Further investigations showed that the patient was positive for lupus anticoagulant and cardiolipin antibodies. A diagnosis of primary antiphospholipid syndrome was made. The patient``s high risk of strokes and hemorrhaging prompted investigation by a {sup 99}mTc-HMPAO brain scan. Further V/Q scans were performed to follow up the initial finding of multiple pulmonary embolism and a R-L shunt study was performed to investigate a left subclavian murmur. The patient was admitted for four weeks and began treatment which included cyclaphosphamide, corticosteroids and plasmaphoresis and was discharged when stable. Over the next six months he was re admitted three times for relapse of antiphospholipid syndrome. On his fourth admission he collapsed and died five hours after admission. Cause of death was due to cardiac arrhythmia secondary to severe right ventricular hypertrophy and dilation. The effects of antiphospholipid syndrome was believed to be responsible for this outcome.

  12. Case Study: A Picture Worth a Thousand Words? Making a Case for Video Case Studies

    Science.gov (United States)

    Pai, Aditi

    2014-01-01

    A picture, they say, is worth a thousand words. If a mere picture is worth a thousand words, how much more are "moving pictures" or videos worth? The author poses this not merely as a rhetorical question, but because she wishes to make a case for using videos in the traditional case study method. She recommends four main approaches of…

  13. STS Case Study Development Support

    Science.gov (United States)

    Rosa de Jesus, Dan A.; Johnson, Grace K.

    2013-01-01

    The Shuttle Case Study Collection (SCSC) has been developed using lessons learned documented by NASA engineers, analysts, and contractors. The SCSC provides educators with a new tool to teach real-world engineering processes with the goal of providing unique educational materials that enhance critical thinking, decision-making and problem-solving skills. During this third phase of the project, responsibilities included: the revision of the Hyper Text Markup Language (HTML) source code to ensure all pages follow World Wide Web Consortium (W3C) standards, and the addition and edition of website content, including text, documents, and images. Basic HTML knowledge was required, as was basic knowledge of photo editing software, and training to learn how to use NASA's Content Management System for website design. The outcome of this project was its release to the public.

  14. KAIZEN – A case study

    Directory of Open Access Journals (Sweden)

    Manjunath Shettar

    2015-05-01

    Full Text Available The ultimate objective of manufacturing industries is to increase productivity with high quality. At present, many manufacturing companies are facing problems such as high quality rejection, high inventories, high lead time, high costs of production, and inability to cope with customer orders. By implementing and practicing the lean production system many problems can be solved without employing high-tech and high-touch approaches but by involving people on the shop floor in Kaizen activities. Kaizen is one of the powerful tools of lean manufacturing. Kaizen refers to continuous improvement in performance, cost and quality. Kaizen ensures that manufacturing processes become leaner and fitter, but eliminate waste (problem where value is added. The main objective of this paper is to provide a background on kaizen, present an overview of kaizen concepts that are used to transform a company into a high performing lean enterprise. A case study of implementation of Kaizen‟s has been discussed.

  15. Is adolescence a critical period for learning formal thinking skills? A case study investigating the development of formal thinking skills in a short-term inquiry-based intervention program

    Science.gov (United States)

    Towne, Forrest S.

    Current domestic and international comparative studies of student achievement in science are demonstrating that the U.S. needs to improve science education if it wants to remain competitive in the global economy. One of the causes of the poor performance of U.S. science education is the lack of students who have developed the formal thinking skills that are necessary to obtain scientific literacy. Previous studies have demonstrated that formal thinking skills can be taught to adolescents, however only 25% of incoming college freshman have these necessary skills. There is some evidence that adolescence (girls aged 11-13, boys aged 12-14) is a critical period where students must learn formal thinking skills, similar to the critical period that exists for young children learning languages. It is not known whether it is more difficult for students to learn formal thinking skills either prior to or following adolescence. The purpose of this quantitative case study is to determine whether adolescence is a critical period for students to learn formal thinking skills. The study also investigates whether a formal thinking skills focused program can improve students' intelligence. In this study 32 students who had not developed any formal thinking skills, ranging in age from 10-16, underwent an intensive four-week, inquiry-based, formal thinking skill intervention program that focused on two formal thinking skills: (1) the ability to control and exclude variables; and (2) the ability to manipulate ratios and proportionalities. The students undergoing the training were matched with control students by age, gender, formal thinking skill ability, and intelligence. The control group attended their traditional science course during the intervention periods. The results of the study showed that the intervention program was successful in developing students' formal thinking skills. The pre-adolescents (males, age 10-11, females, age 10) were unable to learn formal thinking skills

  16. Catalog of NASA-Related Case Studies

    Data.gov (United States)

    National Aeronautics and Space Administration — The OCKO has developed over 50 case studies to enhance learning at workshops, training, retreats and conferences. Case studies make mission knowledge attractive and...

  17. Investigating the Relationship between Corporate Reputation and Customer Behavioral Intentions through Roles of Customer Trust, Customer Commitment and Customer Recognition (Case Study: Iran Insurance Company in Iran, Isfahan City)

    OpenAIRE

    Fariddeddin Allameh Haery; Hassan Ghorbani; Bahram Zamani

    2014-01-01

    Current study entitled "Investigating therelationship between corporate reputation and customer behavioral intentions through roles of customer trust, customer commitment and customer recognition" investigates the role of corporate reputation in purchase intention and tendency to pay premiums regarding variables such as trust, commitment and recognition of customers of Iran Insurance Company in Iran, Isfahan city. In this study regarding the proposed model there is a main hypothesis (which in...

  18. A Case Study to Investigate the Reconceptualization of an Undergraduate Module as a Collaborative Learning Space Mimicking Industrial Practice to Provide the Opportunity for Participation and Practice and to Enhance Learning and Employability

    OpenAIRE

    Conlon, Jo

    2012-01-01

    The research presents a case study undertaken as part of postgraduate research. This postgraduate qualification in professional development was undertaken by the researcher to facilitate the transition from industry practitioner to professional educator. The study considered 80 intermediate level students from 3 vocational fashion and textiles courses jointly undertaking a cross-discipline module. This research was developed to focus on students’ conceptions of learning and personal and pr...

  19. Concentrated photovoltaics, a case study

    Directory of Open Access Journals (Sweden)

    Antonini Piergiorgio

    2014-01-01

    Full Text Available Concentrated Photovoltaics (CPV, once a niche technology, has now reached the maturity and reliability for large scale power generation. Especially in regions where temperatures are very high, the use of high efficiency triple junction solar cells with concentrating optics allows stable energy yield. Thus CPV can be seen as complementary and not in concurrence with silicon photovoltaics. The state of the art, the advantages and limitations of this technology will be shown. Among the main advantages of CPV is the possibility of a much higher energy supply, when compared to silicon photovoltaics, both comparing CPV and silicon with same area or the same installed power. The use of recycled and recyclable materials allows a more environmentally friendly production. The possibility to couple CPV with desalination facilities, energy storage will be analysed. As an example a case study of a CPV installation in Northern Italy is discussed. Here the use of mature technologies, derived from automotive and lighting sectors resulted in a simple and efficient module.

  20. Shuttle Transportation System Case-Study Development

    Science.gov (United States)

    Ransom, Khadijah

    2012-01-01

    A case-study collection was developed for NASA's Space Shuttle Program. Using lessons learned and documented by NASA KSC engineers, analysts, and contractors, decades of information related to processing and launching the Space Shuttle was gathered into a single database. The goal was to provide educators with an alternative means to teach real-world engineering processes and to enhance critical thinking, decision making, and problem solving skills. Suggested formats were created to assist both external educators and internal NASA employees to develop and contribute their own case-study reports to share with other educators and students. Via group project, class discussion, or open-ended research format, students will be introduced to the unique decision making process related to Shuttle missions and development. Teaching notes, images, and related documents will be made accessible to the public for presentation of Space Shuttle reports. Lessons investigated included the engine cutoff (ECO) sensor anomaly which occurred during mission STS-114. Students will be presented with general mission infom1ation as well as an explanation of ECO sensors. The project will conclude with the design of a website that allows for distribution of information to the public as well as case-study report submissions from other educators online.

  1. Theoretical study of rock mass investigation efficiency

    Energy Technology Data Exchange (ETDEWEB)

    Holmen, Johan G.; Outters, Nils [Golder Associates, Uppsala (Sweden)

    2002-05-01

    The study concerns a mathematical modelling of a fractured rock mass and its investigations by use of theoretical boreholes and rock surfaces, with the purpose of analysing the efficiency (precision) of such investigations and determine the amount of investigations necessary to obtain reliable estimations of the structural-geological parameters of the studied rock mass. The study is not about estimating suitable sample sizes to be used in site investigations.The purpose of the study is to analyse the amount of information necessary for deriving estimates of the geological parameters studied, within defined confidence intervals and confidence level In other words, how the confidence in models of the rock mass (considering a selected number of parameters) will change with amount of information collected form boreholes and surfaces. The study is limited to a selected number of geometrical structural-geological parameters: Fracture orientation: mean direction and dispersion (Fisher Kappa and SRI). Different measures of fracture density (P10, P21 and P32). Fracture trace-length and strike distributions as seen on horizontal windows. A numerical Discrete Fracture Network (DFN) was used for representation of a fractured rock mass. The DFN-model was primarily based on the properties of an actual fracture network investigated at the Aespoe Hard Rock Laboratory. The rock mass studied (DFN-model) contained three different fracture sets with different orientations and fracture densities. The rock unit studied was statistically homogeneous. The study includes a limited sensitivity analysis of the properties of the DFN-model. The study is a theoretical and computer-based comparison between samples of fracture properties of a theoretical rock unit and the known true properties of the same unit. The samples are derived from numerically generated boreholes and surfaces that intersect the DFN-network. Two different boreholes are analysed; a vertical borehole and a borehole that is

  2. A HARD CHOICE (CASE STUDY)

    OpenAIRE

    KRAVCHENKO NATALIYA A.; KUZNETSOVA SVETLANA A.

    2014-01-01

    The case describes the problems of strategic choice: a small company successfully working in the engineering market (automation of technological processes) in the electric power industry has to make a decision on its further development in a changing external environment and increased competition. The case was carried out to be used in training programs of different levels within the courses “Strategic Management”, “Innovation Management”, “Strategic Analysis Methods”, “Change Management” whe...

  3. Electricity policy: investigating participation in low salience policy processes. A case study of participation in the policy-making process concerning Statnett's application for licenses to trade in electricity with Germany and Great Britain.

    OpenAIRE

    Ness, Julie

    2014-01-01

    Electricity is the cornerstone of modern society, but electricity policy is rarely debated in the public. Some energy projects, such as new transmission grid or wind-farms, may reach the top of the media agenda and be publicly debated. But for the most part, changes in the electricity sector is implemented without greater debate in public. This thesis is a case study of participation in the policy-making process in one energy project, Statnett's application to construct interconnectors to Ger...

  4. Five misunderstandings about case study research

    DEFF Research Database (Denmark)

    Flyvbjerg, Bent

    2004-01-01

    This article examines five common misunderstandings about case-study research: (1) Theoretical knowledge is more valuable than practical knowledge; (2) One cannot generalize from a single case, therefore the single case study cannot contribute to scientific development; (3) The case study is most...... useful for generating hypotheses, while other methods aremore suitable for hypotheses testing and theory building; (4) The case study contains a bias toward verification; and (5) It is often difficult to summarize specific case studies. The article explains and corrects these misunderstandings one by one...... and concludes with the Kuhnian insight that a scientific discipline without a large number of thoroughly executed case studies is a discipline without systematic production of exemplars, and that a discipline without exemplars is an ineffective one. Social science may be strengthened by the execution of more...

  5. Five misunderstandings about Case-study Research

    DEFF Research Database (Denmark)

    Flyvbjerg, Bent

    This article examines five common misunderstandings about case-study research: (1) Theoretical knowledge is more valuable than practical knowledge; (2) One cannot generalize from a single case, therefore the single case study cannot contribute to scientific development; (3) The case study is most...... useful for generating hypotheses, while other methods aremore suitable for hypotheses testing and theory building; (4) The case study contains a bias toward verification; and (5) It is often difficult to summarize specific case studies. The article explains and corrects these misunderstandings one by one...... and concludes with the Kuhnian insight that a scientific discipline without a large number of thoroughly executed case studies is a discipline without systematic production of exemplars, and that a discipline without  exemplars is an ineffective one. Social science may be strengthened by the execution of more...

  6. Five Misunderstandings About Case-Study Research

    DEFF Research Database (Denmark)

    Flyvbjerg, Bent

    2006-01-01

    This article examines five common misunderstandings about case-study research: (a) theoretical knowledge is more valuable than practical knowledge; (b) one cannot generalize from a single case, therefore, the single-case study cannot contribute to scientific development; (c) the case study is most...... useful for generating hypotheses, whereas other methods are more suitable for hypotheses testing and theory building; (d) the case study contains a bias toward verification; and (e) it is often difficult to summarize specific case studies. This article explains and corrects these misunderstandings one...... by one and concludes with the Kuhnian insight that a scientific discipline without a large number of thoroughly executed case studies is a discipline without systematic production of exemplars, and a discipline without exemplars is an ineffective one. Social science may be strengthened by the execution...

  7. INVESTIGATING DISTANCE EDUCATION STUDENTS’ STUDY SKILLS

    Directory of Open Access Journals (Sweden)

    Cengiz POYRAZ

    2013-10-01

    Full Text Available Distance education, which is a planned way of teaching in which students and instructors are brought face to face in a classroom environment in several different ways by means of technology, has started to become widespread in many fields today. In distance education, students and instructors reside in different locations. Students can learn at their pace and control their learning path, content and load of what they have learned and evaluate it. However, they should adopt strategies for effective studying in order not to waste their time and efforts. Because study skills, motivation, time management, exam preparation and coping with exam stress have an impact on students’ success. In this context, distance education students’ study skills are foregrounded in today’s widespread use of distance education. In accordance with this, this study aims to investigate some variables which are influential on the dimensions of distance education students’ motivation, time management, exam preparation and coping with exam stress. A personal information form and the Study Skills scale were used for data collection. This study was designed in survey model and SPSS16.0 statistical package program was used for the statistical analyses of the research data. The research findings were discussed in line with the literature and some suggestions were presented for further research and researchers.

  8. Transanal rectopexy - twelve case studies

    Directory of Open Access Journals (Sweden)

    Rubens Henrique Oleques Fernandes

    2012-06-01

    Full Text Available OBJECTIVES: This study analyzed the results of transanal rectopexy and showed the benefits of this surgical technique. METHOD: Twelve patients were submitted to rectopexy between 1997 and 2011. The surgical technique used was transanal rectopexy, where the mesorectum was fixed to the sacrum with nonabsorbable suture. Three patients had been submitted to previous surgery, two by the Delorme technique and one by the Thiersch technique. RESULTS: Postoperative hospital stay ranged from 1 to 4 days. One patient (8.3% had intraoperative hematoma, which was treated with local compression and antibiotics. One patient (8.3% had residual mucosal prolapse, which was resected. Prolapse recurrence was seen in one case (8.3%. Improved incontinence occurred in 75% of patients and one patient reported obstructed evacuation in the first month after surgery. No death occurred. CONCLUSION: Transanal rectopexy is a simple, low cost technique, which has shown good efficacy in rectal prolapse control.OBJETIVO: O presente estudo analisou os resultados da retopexia pela via transanal e expôs os benefícios desta técnica cirúrgica. MÉTODO: Doze pacientes com prolapso foram operados no período de 1997 a 2011. A técnica cirúrgica usada foi a retopexia transanal, onde o mesorreto foi fixado ao sacro com fio inabsorvível. Três pacientes tinham cirurgia prévia, dois pela técnica de Delorme e um pela técnica de Thiersch. RESULTADOS: A permanência hospitalar pós-operatória variou de 1- 4 dias. Uma paciente (8,3% apresentou hematoma transoperatório que foi tratado com compressão local e antibioticoterapia. Um paciente apresentou prolapso mucoso residual (8,3%, que foi ressecado. Houve recidiva da procidência em um caso (8,3%. A melhora da incontinência ocorreu em 75% dos pacientes e uma paciente apresentou bloqueio evacuatório no primeiro mês após a cirurgia. Não houve mortalidade entre os pacientes operados. CONCLUSÃO: A retopexia transanal é uma t

  9. Drive Electric Vermont Case Study

    Energy Technology Data Exchange (ETDEWEB)

    Wagner, Fred [Energetics Incorporated, Columbia, MD (United States); Roberts, Dave [Vermont Energy Investment Corporation (VEIC), Burlington, VT (United States); Francfort, Jim [Idaho National Lab. (INL), Idaho Falls, ID (United States); White, Sera [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-03-01

    Currently in the United States, the heavy majority of plug-in electric vehicle (PEV) sales have been in highly conducive, selected, metropolitan areas; opposed to more broad distribution across the country. The U.S. Department of Energy’s EV Everywhere Grand Challenge is looking carefully at the barriers and opportunities that exist to enable small and midsize communities to partake in the PEV market and benefit from the economic and environmental advantages of PEVs. In order to gain insight into these challenges and barriers, DOE selected a success story (i.e., Drive Electric Vermont) as the subject of this case study, as the state of Vermont is tied with Detroit, Michigan in having the highest percentage of 2014 (most recent complete data) PEV registrations for cold weather U.S. cities and has seen more than a sixfold increase in charging stations over the last three years. The overall objective of this case study was to use the lessons learned from Drive Electric Vermont to determine what activities are most effective at encouraging acquisitions of PEVs and deployment of charging infrastructure in small to midsize communities, prioritizing and sequencing their implementation, identifying robust means for extrapolation, and applying this understanding to other small to midsize communities across the nation. The Drive Electric Vermont Program was formed in 2012 with a goal of increasing the use of electrified transportation in Vermont through policy development, education and outreach, and infrastructure development. The Drive Electric Vermont Program can be broadly broken into four components: (1) strategic planning/leadership, (2) stakeholder/partnership development, (3) education and outreach, and (4) incentives. The early phases of the program focused heavily on strategic planning, and stakeholder and partnership development, followed by a transition to education and outreach activities, charging infrastructure development, and grant and incentive programs

  10. Drive Electric Vermont Case Study

    Energy Technology Data Exchange (ETDEWEB)

    Wagner, Fred [Energetics Incorporated, Columbia, MD (United States); Roberts, Dave [Vermont Energy Investment Corporation (VEIC), Burlington, VT (United States); Francfort, Jim [Idaho National Lab. (INL), Idaho Falls, ID (United States); White, Sera [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-03-01

    Currently in the United States, the heavy majority of plug-in electric vehicle (PEV) sales have been in highly conducive, selected, metropolitan areas; opposed to more broad distribution across the country. The U.S. Department of Energy’s EV Everywhere Grand Challenge is looking carefully at the barriers and opportunities that exist to enable small and midsize communities to partake in the PEV market and benefit from the economic and environmental advantages of PEVs. In order to gain insight into these challenges and barriers, DOE selected a success story (i.e., Drive Electric Vermont) as the subject of this case study, as the state of Vermont is tied with Detroit, Michigan in having the highest percentage of 2014 (most recent complete data) PEV registrations for cold weather U.S. cities and has seen more than a sixfold increase in charging stations over the last three years. The overall objective of this case study was to use the lessons learned from Drive Electric Vermont to determine what activities are most effective at encouraging acquisitions of PEVs and deployment of charging infrastructure in small to midsize communities, prioritizing and sequencing their implementation, identifying robust means for extrapolation, and applying this understanding to other small to midsize communities across the nation. The Drive Electric Vermont Program was formed in 2012 with a goal of increasing the use of electrified transportation in Vermont through policy development, education and outreach, and infrastructure development. The Drive Electric Vermont Program can be broadly broken into four components: (1) strategic planning/leadership, (2) stakeholder/partnership development, (3) education and outreach, and (4) incentives. The early phases of the program focused heavily on strategic planning, and stakeholder and partnership development, followed by a transition to education and outreach activities, charging infrastructure development, and grant and incentive programs

  11. Neuroscience Investigations: An Overview of Studies Conducted

    Science.gov (United States)

    Reschke, Millard F.

    1999-01-01

    The neural processes that mediate human spatial orientation and adaptive changes occurring in response to the sensory rearrangement encountered during orbital flight are primarily studied through second and third order responses. In the Extended Duration Orbiter Medical Project (EDOMP) neuroscience investigations, the following were measured: (1) eye movements during acquisition of either static or moving visual targets, (2) postural and locomotor responses provoked by unexpected movement of the support surface, changes in the interaction of visual, proprioceptive, and vestibular information, changes in the major postural muscles via descending pathways, or changes in locomotor pathways, and (3) verbal reports of perceived self-orientation and self-motion which enhance and complement conclusions drawn from the analysis of oculomotor, postural, and locomotor responses. In spaceflight operations, spatial orientation can be defined as situational awareness, where crew member perception of attitude, position, or motion of the spacecraft or other objects in three-dimensional space, including orientation of one's own body, is congruent with actual physical events. Perception of spatial orientation is determined by integrating information from several sensory modalities. This involves higher levels of processing within the central nervous system that control eye movements, locomotion, and stable posture. Spaceflight operational problems occur when responses to the incorrectly perceived spatial orientation are compensatory in nature. Neuroscience investigations were conducted in conjunction with U. S. Space Shuttle flights to evaluate possible changes in the ability of an astronaut to land the Shuttle or effectively perform an emergency post-landing egress following microgravity adaptation during space flights of variable length. While the results of various sensory motor and spatial orientation tests could have an impact on future space flights, our knowledge of

  12. Study on Case Teaching of Financial Management

    Science.gov (United States)

    Che, Zhenghong; Che, Zhengmei

    2011-01-01

    Case teaching is an efficient teaching method of management. It plays an important role to enhance the students' ability to practice the theory. However, case teaching of financial management has not achieved the expected results. The paper aims to study the importance, characteristics and corresponding methods of case teaching method of financial…

  13. Associative visual agnosia: a case study.

    Science.gov (United States)

    Charnallet, A; Carbonnel, S; David, D; Moreaud, O

    2008-01-01

    We report a case of massive associative visual agnosia. In the light of current theories of identification and semantic knowledge organization, a deficit involving both levels of structural description system and visual semantics must be assumed to explain the case. We suggest, in line with a previous case study, an alternative account in the framework of (non abstractive) episodic models of memory.

  14. Investigating the Effect of Environmental Uncertainty on the Selection of Knowledge Management Strategies in the Field of Product (Case Study: Universities and Higher Educational Institutes in Khorasan-e-Razavi

    Directory of Open Access Journals (Sweden)

    Alireza Bafandeh Zendeh

    2012-10-01

    Full Text Available This study investigated the effect of environmental uncertainty on the selection of knowledge management strategies in the domain of product. However we investigated the effect of environmental uncertainty on the selection of knowledge detection strategies and knowledge revenue by testing three hypotheses. The statistical universe included chancellors and assistants of universities of Khorasan-e-Razavi that 28 universities and 48 repliers were selected as the sample of study. This study with the view of quarry was sort in applied researches and with the view of method was sort in causal researches. Hypotheses were tested by using regression model and results showed that environmental uncertainty had positive impact on knowledge detection strategies and knowledge revenue in domain of product. Also results cleared the role of knowledge management strategies in the domain of product and prepared perspectives to chancellors of universities to improve their education and research

  15. Corporate Social Responsibility : A comparative case study of three companies

    OpenAIRE

    Fadel, Dennis; Dahl, Emil

    2013-01-01

    The main purpose of this thesis is to study why the chosen case companies, Atlas Copco, Sandvik and Alfa Laval engage in CSR activities, with a secondary purpose of investigating how the aformentioned case companies has executed their engagement in CSR and what their present focus is. Our empirical findings suggest that the case companies have similar motives and approaches to CSR engagement. Whereas their main motivation for CSR engagement derives from a concern of legitimacy to their invest...

  16. Epidemiological Investigation and Clinical Study of 317 Guillain-Barre Syndrome(GBS)Cases%317例格林-巴利综合征的流行病学调查与临床分析

    Institute of Scientific and Technical Information of China (English)

    宋长江; 周雪; 王金英; 刘艳霞; 吕珀

    2001-01-01

    During 1996~1999, there were 317 GBS cases reported by AFP surveillance system. Study found that the incidence of GBS was 1.5 times higher in male than in female, the highest incidence was of 2 to 3 year old age groups, the seasonal peak appeared in summer and autumn. The clinical characteristics of GBS are manifested by fever, myalgia, abnormal feeling, weakening or disappearing of reflexes of tendon and symmetric paralysis. Most of the GBS cases were involved with lower limbs and began with the distant muscles. 69.4 percent of GBS cases could recover from the disease. The GBS case mortality rate was 6.0 percent.%黑龙江省1996~1999年急性弛缓性麻痹(AFP)病例监测系统共报告格林-巴利综合征(GBS)317例,其中男性发病是女性的1.5倍,以2~3岁儿童发病较多。该病呈夏、秋季高峰。临床主要特征为发热,肌痛,感觉异常,深部腱反射减弱或消失,呈对称性麻痹,以下肢多见,麻痹多从远端开始,有69.4%的病例能够康复,病死率为6.0%。

  17. Academic Planning: Four Institutional Case Studies.

    Science.gov (United States)

    Kieft, Raymond N.

    As part of a project studying intrainstitutional planning, management, and evaluation, four case studies were undertaken in 1976 of academic planning at Villa Maria College, Kansas City Metropolitan Community College District, West Virginia University, and Western Washington University. The case studies were part of an ongoing project, the…

  18. Liverpool Telecare Pilot: case studies

    Directory of Open Access Journals (Sweden)

    Nigel Barnes

    2006-09-01

    Full Text Available Telecare services use information and communications technology (ICT to support the provision of care to people in their own homes. This paper describes a pilot telecare service employed by Liverpool (UK City Council to support a sample of their frail and elderly social services users. The pilot has been running for over two years and has been deployed for 21 individuals in Liverpool. In this paper we present the pilot system and provide real example cases which help to illustrate the benefits of such a system.

  19. Teachers' Entrepreneurial Profile: Case Study

    Science.gov (United States)

    Stettiner, Caio Flavio; Formigoni, Alexandre; Filho, Mário Pereira Roque; de Camargo, Mauricio Ortiz; Moia, Roberto Padilha

    2015-01-01

    This article was prepared in order to investigate whether the teachers working in a Business Administration BA degree have an entrepreneurial profile, with the aim of finding whether such teachers are able to support the Pedagogical Proposal of the Institution to which they belong to in what concerns the requirement of the course and also the…

  20. Prehospital airway management: A prospective case study.

    Science.gov (United States)

    Wilbers, N E R; Hamaekers, A E W; Jansen, J; Wijering, S C; Thomas, O; Wilbers-van Rens, R; van Zundert, A A J

    2011-01-01

    We conducted a one-year prospective study involving a prehospital Emergency Medical Service in the Netherlands to investigate the incidence of failed or difficult prehospital endotracheal intubation. During the study period the paramedics were asked to fill in a registration questionnaire after every endotracheal intubation. Of the 26,271 patient contacts, 256 endotracheal intubations were performed by paramedics in one year. Endotracheal intubation failed in 12 patients (4.8%). In 12.0% of 249 patients, a Cormack and Lehane grade III laryngoscopy was reported and a grade IV laryngoscopy was reported in 10.4%. The average number of endotracheal intubations per paramedic in one year was 4.2 and varied from zero to a maximum of 12. The median time between arrival on the scene and a positive capnograph was 7 min.38 s in the case of a Cormack and Lehane grade I laryngoscopy and 14 min.58 s in the case of a Cormack and Lehane grade 4 laryngoscopy. The incidence of endotracheal intubations performed by Dutch paramedics in one year was low, but endotracheal intubation was successful in 95.2%, which is comparable with findings in international literature. Early capnography should be used consistently in prehospital airway management. PMID:21612142

  1. Factors determining retail banks performance : case study Ubank / Buhle Mdakane

    OpenAIRE

    Mdakane, Buhle

    2012-01-01

    The study is a case study and it investigates the factors that determine the performance of retail banks in South Africa, and follows a case study approach in which Ubank is the focus. The purpose is to rank the identified factors in their order of importance for management's focus on improving the bank's performance. Performance is examined in terms of the bank's profitability and growth. This research utilizes secondary data analysis. The quantitative method is used by critic...

  2. Unmasking Cleckley's psychopath: assessing historical case studies.

    Science.gov (United States)

    DeShong, Hilary L; Helle, Ashley C; Mullins-Sweatt, Stephanie N

    2016-05-01

    The current study investigated original case descriptions of psychopathy (Cleckley, 1941) in relation to current conceptualizations and general personality traits. Attorneys, forensic psychologists and clinical faculty members completed ratings of psychopathy and personality after reading vignettes based on Cleckley's descriptions of a psychopath. The results suggest that professionals' ratings are consistent with current conceptualizations of psychopathy. Furthermore, the five-factor model (FFM) personality traits of the vignettes aligned with the current literature on the FFM and psychopathy (i.e. low neuroticism, conscientiousness and agreeableness). The results further supported that a general trait model, like the FFM, may be well suited to describe the underlying personality traits of psychopathy. Gender differences were also examined. PMID:26931520

  3. Florida Investigates 2 More Possible Cases of Zika Virus Local Transmission

    Science.gov (United States)

    ... html Florida Investigates 2 More Possible Cases of Zika Virus Local Transmission If all 4 are confirmed, they ... to see cases of local transmission of the Zika virus this summer in warm, humid southern states such ...

  4. Investigating Language Teaching: The Case for an Educational Approach.

    Science.gov (United States)

    Ellis, Rod

    1988-01-01

    Contrasts two approaches for investigating second-language teaching, arguing that the educational approach, which starts with a pedagogical issue and examines it through pedagogical, theoretical, and empirical sources, is more comprehensive than the linguistic approach, which primarily consists of the applications of linguistic research.…

  5. Logistics case study based research: Towards higher quality

    DEFF Research Database (Denmark)

    Pedrosa, Alex; Näslund, Dag; Jasmand, Claudia

    2012-01-01

    analysis of 134 case study based articles published in six leading logistics and supply chain management (SCM) journals between 1998 and 2010 is used to assess and evaluate the quality of the case study based research approach as documented in these publications. Findings – This research provides...... to address to ensure high quality of the case study based research approach in published articles. Research limitations/implications – This study is limited to the analysis of published articles in six logistics and SCM journals. Further research should investigate different journals in logistics and other...

  6. The case for moderate-risk buyers: An empirical investigation.

    Science.gov (United States)

    Jung, Joowon; Yi, Sunghwan

    2016-06-30

    Despite recent increase in research on compulsive buying and excessive buying, the category of buyers whose buying patterns are approaching the clinical level but still somewhat below it has rarely been recognized in the literature. In this paper, we propose the case for the category of moderate-risk buyers. Following Ridgway et al.'s (2008) findings, moderate-risk buyers were operationalized as scoring 21-24 on Compulsive Buying Index. We hypothesized that moderate-risk buyers would hold significantly higher materialistic values than non-compulsive buyers, while exhibiting significantly less depressive symptoms and covert narcissism than full-fledged compulsive buyers. An online survey of individuals who frequently engaged in buying lapses was used (N=809). We found that moderate-risk buyers were significantly different from both compulsive buyers and non-compulsive buyers in the frequency of buying lapses, hiding purchases and frequency of experiencing negative feelings leading to buying lapses. Furthermore, consistent with our hypothesis, moderate-risk buyers held significantly lower covert narcissism and depression than full-fledged compulsive buyers, but their materialism was not significantly different from each other. Our findings support the case for moderate-risk buyers as a separate group from full-fledged compulsive buyers. PMID:27138822

  7. An Investigation and Analysis of Cross-border Ethnic Marriage in the Sino-Vietnam Border Area---Taking Tianpeng and Muyang Townships of Funing County in Yunnan Province as Case Studies

    Institute of Scientific and Technical Information of China (English)

    Fang Tianjian

    2015-01-01

    Cross-border ethnic marriage is a special form of marriage that is found in border are-as.Although there is a historical basis and it is sanctioned morally, it is characterized by loose u-nions with no legal certification.This eventually has impacts,either positive or negative,on social man-agement and social stability in the frontier region. In the areas along the long border of China, the phenomenon of cross-border ethnic marriage does not lack written documentation,and appears in va-rious kinds of media.However,in terms of the cur-rent focus of domestic academic circles, the phe-nomenon of cross-border ethnic marriage in the Si-no-Vietnam border area is of particular concern. Thus,this area has become one with typical case studies of cross-border ethnic marriage in China's border areas.Cross-border ethnic marriages among the frontier people who live in the Sino-Vietnam border area is a historical phenomenon.However,it was not until after the founding of New China (1949) that cases of cross-border ethnic marriages were systematically registered,and the data became more accurate.However, because of the mobility and hidden nature of the people involved with cross-border marriages,it makes the statistical data in the China-Vietnam border area less reliable.In-stead of having specific data,we can only have es-timates.

  8. Five case studies of multifamily weatherization programs

    Energy Technology Data Exchange (ETDEWEB)

    Kinney, L; Wilson, T.; Lewis, G. [Synertech Systems Corp. (United States); MacDonald, M. [Oak Ridge National Lab., TN (United States)

    1997-12-31

    The multifamily case studies that are the subject of this report were conducted to provide a better understanding of the approach taken by program operators in weatherizing large buildings. Because of significant variations in building construction and energy systems across the country, five states were selected based on their high level of multifamily weatherization. This report summarizes findings from case studies conducted by multifamily weatherization operations in five cities. The case studies were conducted between January and November 1994. Each of the case studies involved extensive interviews with the staff of weatherization subgrantees conducting multifamily weatherization, the inspection of 4 to 12 buildings weatherized between 1991 and 1993, and the analysis of savings and costs. The case studies focused on innovative techniques which appear to work well.

  9. Summary of case studies for cooperation mechanisms

    DEFF Research Database (Denmark)

    Longa, Francesco Dalla; Klinge Jacobsen, Henrik; Hansen, Lise-Lotte Pade;

    2012-01-01

    This document is a summary report highlighting the main aspect analyzed in the RES4LESS case studies. The document starts with an introductory chapter where the background that led to the selection of the case studies is outlined. In the following three chapters the case studies are presented......, highlighting the most relevant results. A brief chapter concludes the document, giving an outlook on the follow-up activities of the RES4LESS project. This summary is intended not only as an introduction to the RES4LESS cases studies, but also as a guideline to read and interpret the in-depth analysis carried...... out in the final documents that describe the case studies in detail. These documents will be published in September 2012 on the RES4LESS website, www.res4less.eu....

  10. Regional case studies--Africa.

    Science.gov (United States)

    Prentice, Andrew M

    2009-01-01

    Africa is the final continent to be affected by the nutrition transition and, as elsewhere, is characterized by the paradoxical coexistence of malnutrition and obesity. Several features of the obesity epidemic in Africa mirror those in other emerging nations: it penetrates the richer nations and urban areas first with a strong urban- rural gradient; initially it affects the wealthy, but later there is a demographic switch as obesity becomes a condition more associated with poverty, and it shares many of the same drivers related to the increasing affordability of highly refined oils and carbohydrates, and a move away from subsistence farm work and towards sedentary lifestyles. Africa also has some characteristics of the obesity epidemic that stand out from other regions such as: (1) excepting some areas of the Pacific, Africa is probably the only region in which obesity (especially among women) is viewed culturally as a positive and desirable trait, leading to major gender differences in obesity rates in many countries; (2) most of Africa has very low rates of obesity in children, and to date African obesity is mostly an adult syndrome; (3) Africans seem genetically prone to higher rates of diabetes and hypertension in association with obesity than Caucasians, but seem to be relatively protected from dislipidemias; (4) the case-specific deaths and disabilities from diabetes and hypertension in Africa are very high due to the paucity of health services and the strain that the 'double burden' of disease places on health systems.

  11. Leishmaniasis in dogs: Case study

    Directory of Open Access Journals (Sweden)

    Aleksić Jelena

    2009-01-01

    Full Text Available The paper presents a case of leishmaniasis in a 2.5-month-old dog imported from France. The clinical examination established a generally poor state of health, expressed cachexia, atrophy of the temporal musculature, weakness of movement, as well as abnormally long and brittle nails. There was also hyperkeratosis of the nose tip and paws. A histological examination of biopsy sections of the altered skin parts showed inflammatory changes in the area of the dermis, together with infiltration of macrophages and a smaller number of lymphocytes, plasmocytes and neutrophil granulocytes in the area around the sebaceous glands and hair follicles. The determined changes correspond to superficial dermatitis. Edema followed by partial degeneration of connective-tissue fibers is observed in connective tissue. A smaller number of intracellular parasitic forms was established in mononuclear cells. A smaller number of oval amastigotes with round dark red nucleis were observed in sections stained using the Gimza method in the cytoplasm of macrophages located in the dermis, but also extracellularly. It was concluded that the dog was diseased with leishmaniasis on the grounds of the clinical picture and the microscopic findings.

  12. UMTRA GJVP commingled waste project in investigation: A case history

    International Nuclear Information System (INIS)

    During the course of performing work under the Uranium Mill Tailings Remedial Action program, UNC Geotech discovered that, because of past business-related operations, certain properties included in the Grand Junction Vicinity Property Project had the potential for containing commingled waste. As a result, UNC Geotech initiated a new project, the Commingled Waste Investigation Project, to further characterize those properties determined to have a possibility of containing commingled waste. 8 refs., 3 figs., 1 tab

  13. Rebranding: a Case Study Approach

    OpenAIRE

    Size, Maria, (Thesis)

    2005-01-01

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

  14. Outage management: A case study

    International Nuclear Information System (INIS)

    Outage management issues identified from a field study conducted at a two-unit commercial pressurized water reactor (PWR), when one unit was in a refueling outage and the other unit was at full power operation, are the focus of this paper. The study was conduced as part of the US Nuclear Regulatory Commission's (NRC) organizational factors research program, and therefore the issues to be addressed are from an organizational perspective. Topics discussed refer to areas identified by the NRC as critical for safety during shutdown operations, including outage planning and control, personnel stress, and improvements in training and procedures. Specifically, issues in communication, management attention, involvement and oversight, administrative processes, organizational culture, and human resources relevant to each of the areas are highlighted by example from field data collection. Insights regarding future guidance in these areas are presented based upon additional data collection subsequent to the original study

  15. Outage management: A case study

    Energy Technology Data Exchange (ETDEWEB)

    Haber, S.B.; Barriere, M.T. (Brookhaven National Lab., Upton, NY (United States)); Roberts, K.H. (California Univ., Berkeley, CA (United States). Walter A. Haas School of Business)

    1992-01-01

    Outage management issues identified from a field study conducted at a two-unit commercial pressurized water reactor (PWR), when one unit was in a refueling outage and the other unit was at full power operation, are the focus of this paper. The study was conduced as part of the US Nuclear Regulatory Commission's (NRC) organizational factors research program, and therefore the issues to be addressed are from an organizational perspective. Topics discussed refer to areas identified by the NRC as critical for safety during shutdown operations, including outage planning and control, personnel stress, and improvements in training and procedures. Specifically, issues in communication, management attention, involvement and oversight, administrative processes, organizational culture, and human resources relevant to each of the areas are highlighted by example from field data collection. Insights regarding future guidance in these areas are presented based upon additional data collection subsequent to the original study.

  16. Outage management: A case study

    Energy Technology Data Exchange (ETDEWEB)

    Haber, S.B.; Barriere, M.T. [Brookhaven National Lab., Upton, NY (United States); Roberts, K.H. [California Univ., Berkeley, CA (United States). Walter A. Haas School of Business

    1992-09-01

    Outage management issues identified from a field study conducted at a two-unit commercial pressurized water reactor (PWR), when one unit was in a refueling outage and the other unit was at full power operation, are the focus of this paper. The study was conduced as part of the US Nuclear Regulatory Commission`s (NRC) organizational factors research program, and therefore the issues to be addressed are from an organizational perspective. Topics discussed refer to areas identified by the NRC as critical for safety during shutdown operations, including outage planning and control, personnel stress, and improvements in training and procedures. Specifically, issues in communication, management attention, involvement and oversight, administrative processes, organizational culture, and human resources relevant to each of the areas are highlighted by example from field data collection. Insights regarding future guidance in these areas are presented based upon additional data collection subsequent to the original study.

  17. Case Study Methodology and Homelessness Research

    Directory of Open Access Journals (Sweden)

    Jill Pable

    2013-10-01

    Full Text Available This paper describes the potential suitability of case study methodology for inquiry with the homeless population. It references a research study that uses case study research method to build theory. This study's topic is the lived experience of destitute individuals who reside in homeless shelters, and explores the homeless shelter built environment's potential influence on resident satisfaction and recovery. Case study methodology may be appropriate because it explores real-life contextual issues that characterize homelessness and can also accommodate the wide range of homeless person demographics that make this group difficult to study in a generalized fashion. Further, case study method accommodates the need within research in this area to understand individualized treatments as a potential solution for homelessness.

  18. Logistics opportunity costs: A mining case study

    Directory of Open Access Journals (Sweden)

    Leani van Jaarsveld

    2013-05-01

    Full Text Available This study highlighted the importance of determining the impact that an ineffective mode of transport has on a firm’s transportation model and costs. The main focus of this study was to determine the logistics opportunity costs of using road transport within a mining firm. A case study approach was followed, as the investigation aimed to analyse a complex problem experienced by one company and present it in an easily understandable format. From the results of this study, it was apparent that the logistics opportunity costs associated with the mode of transport was substantial. This highlighted the need for firms to revise their choice of transport mode on a regular basis, as it has a major impact not only on their transportation costs, but also on their inventory holding and carbon emissions. The results also have implications for South Africa’s only freight railway, Transnet Freight Rail, which should not only focus on expanding its existing capacity, but also on improving its customer service delivery whilst containing tariff increases.

  19. Case Study on Quality Education

    Science.gov (United States)

    Habib, Zahida

    2011-01-01

    Quality of Education, especially at Primary level, is an important issue to be discussed at the International Forum. This study highlights the quality of primary education through a comparison of the quality of Community Model Schools and Govt. Girls Primary Schools in Pakistan. Community Model Schools were established under Girls Primary…

  20. A Case Study of Engineering Ethics

    Science.gov (United States)

    Shimizu, Kazuo

    In Engineering Ethics Class at Shizuoka University, the Code of Ethics and Cases for Electrical Engineers by IEEJ Ethics committee is used to promote for high education effect to correspond large number of students (140students). In this paper, a case study in the class, and survey results for ethics value of students are presented. In addition, some comments for role playing act on the case of virtual experiences by students are described.

  1. Associative Visual Agnosia: A Case Study

    Directory of Open Access Journals (Sweden)

    A. Charnallet

    2008-01-01

    Full Text Available We report a case of massive associative visual agnosia. In the light of current theories of identification and semantic knowledge organization, a deficit involving both levels of structural description system and visual semantics must be assumed to explain the case. We suggest, in line with a previous case study [1], an alternative account in the framework of (non abstractive episodic models of memory [4].

  2. Marketing-Indonesia case study

    OpenAIRE

    Kurniawan, Iwan; Roshetko, James M.

    2007-01-01

    The purpose of research are (1) to identify the potential VAF species or products for Nanggung Farmers; (2) identify market channels & marketing problems; (3) enhances farmers' understanding of market mechanism; and (4) identify opportunities to improve the quantity & quality of VAF. The study was conducted on Sept-Oct 2006. Data and information are collected through Focus Group Discussion (FGD) in each village that attended both men and women. LTRA-5 (Agroforestry and Sustainable Vegetabl...

  3. Environmental contracting: a case study

    OpenAIRE

    Kubiak, Joseph C.

    1994-01-01

    Approved for public release, distribution unlimited The end of cold war levels of defense expenditures has promoted the reduction in the number of defense-related companies, creating potential monopolistic economic scenarios for defense procurement. This thesis studies one methodology to deal with these scenarios, based on the Baron-Myerson monopolist regulation mechanisms. The Baron-Myerson mechanism provides a tool to regulate monopolists when their costs are unknown or cannot be measure...

  4. Linguistic Overgeneralization: A Case Study

    Directory of Open Access Journals (Sweden)

    Wasan Nazar Al-Baldawi

    2011-08-01

    Full Text Available The current study described a single child’s language acquisition. The importance of this study resided in the circumstances and the environment in which the child lived. He came from a family in which the parents were from different countries and cultures; spoke different Arabic dialects and who lived in a country in which English is spoken. The child was in his critical period of language acquisition. He seemed to have established a unique way of communicating with people surrounding him to cope with all the linguistic varieties around him. The study showed that the child had semantic, syntactic and morphological overgeneralized structures. The data and results showed that overgeneralization and language acquisition were primarily an innate faculty of the human mind and that imitation did played a primary role in language acquisition.It showed, nevertheless, that imitation and behaviorist approaches could not fully account for language acquisition nor did the generative approach. The results went in favor of an Emergentist approach of language acquisition where both innateness and imitations were crucial constituents of children’s acquisition of linguistic forms.

  5. Radiative damping: a case study

    CERN Document Server

    Spohn, Herbert

    2011-01-01

    We are interested in the motion of a classical charge coupled to the Maxwell self-field and subject to a uniform external magnetic field, B. This is a physically relevant, but difficult dynamical problem, to which contributions range over more than one hundred years. Specifically, we will study the Sommerfeld-Page approximation which assumes an extended charge distribution at small velocities. The memory equation is then linear and many details become available. We discuss how the friction equation arises in the limit of "small" B and contrast this result with the standard Taylor expansion resulting in a second order equation for the velocity of the charge.

  6. Brick handling: a case study.

    Science.gov (United States)

    Webb, R D; Handyside, J

    1982-09-01

    A small change in brick dimensions resulted in an increase in the perceived work-load of men loading and unloading pallets of bricks by hand. A laboratory study indicated that the change in brick dimensions required changes in grip pattern in order to unload bricks at the same rate, moving the same number at a time. These changed grip patterns resulted in increased upper body movement, increased chest-muscle activity and higher heart rates. These differences were reflected in higher subjective ratings of fatigue. PMID:15676442

  7. Ownership and Control Structures: A Case Study

    OpenAIRE

    Apostolov, Mico

    2015-01-01

    This is a study on separation of ownership and control in Southeast Europe, and in particular it is a case study of Macedonia. For structured analysis of this case study we use the World Bank Microdata Library, specifically the Enterprise Surveys which contains firm-level data of a representative sample of economies private sectors. What we are interested in are the ties of ownership and control and whether such linkages contribute to the development of domestic firms and the overall ec...

  8. STUDY OF SIGNIFICANCE OF PLATELET COUNT IN FEVER CASES

    Directory of Open Access Journals (Sweden)

    Vasavilatha

    2015-01-01

    Full Text Available AIM: To study the significance of platelet count in various fevers and also identify the common causes of fever with thrombocytopenia . MATERIALS AND METHODS: 69 patients who were admitted with fever over 2 months of period from 15th October to15th December 2014 in King George Hospital AMC Visakhapatnam studied retrospectively. RESULTS: INCIDENCE: More than half of the cases (52.2% admitted with fever have thrombocytopenia. SEX: The study reveals that irrespective of sex and size of the sample the presentation of fever with/ without thromb ocytopenia could not found any significant difference . Degree of thrombocytopenia in various etiologies: in the present study it is found that out of 15 cases of falciparum malaria 10 cases had thrombocytopenia. Out of 12 undiagnosed cases 8 cases had thro mbocytopenia. Out of 4 cases of gastro intestinal system 3 cases had thrombocytopenia. In the present study it is significantly found that the highest difference is noticed in the presentation of dengue cases. Out of total sample (69 cases it is found tha t 5cases (7.2% of thrombocytopenia with dengue fever were found against 1case (1.4% of dengue fever with normal plate let count. The present study reveals that there is significant difference among various diseases such as malaria 14 (16.6%, dengue feve r 5 (13.9%, Urinary tract infection 2 (5.6%, undiagnosed cases 8 (22.2%. However severe thrombocytopenia (platelets less than 50,000 is seen in14 cases (38.8%out of 36 cases of fever with thrombocytopenia. Further this study reveals that in the cases of malaria 50% of cases reported as severe thrombocytopenia 7cases (19.4% followed by dengue fever3 cases (8.3%. CONCLUSION: Not only malaria, dengue fever and urinary tract infection can also cause severe thrombocytopenia. Fever cases especially with th rombocytopenia show seasonal variations, they are seen commonly in early winter. Febrile thrombocytopenia still presents as atypical and occult forms making

  9. Digital Forensic Investigation Models, an Evolution study

    Directory of Open Access Journals (Sweden)

    Khuram Mushtaque

    2015-10-01

    Full Text Available In business today, one of the most important segments that enable any business to get competitive advantage over others is appropriate, effective adaptation of Information Technology into business and then managing and governing it on their will. To govern IT organizations need to identify value of acquiring services of forensic firms to compete cyber criminals. Digital forensic firms follow different mechanisms to perform investigation. Time by time forensic firms are facilitated with different models for investigation containing phases for different purposes of the entire process. Along with forensic firms, enterprises also need to build a secure and supportive platform to make successful investigation process possible. We have underlined different elements of organizations in Pakistan; need to be addressed to provide support to forensic firms.

  10. Case studies of steel structure failures

    Directory of Open Access Journals (Sweden)

    P. Bernasovský

    2010-01-01

    Full Text Available The contribution deals with some case studies of steel structure failures, which happened in Slovakia a few years ago. Features of cracking are illustrated on real cases of breakdowns in the transmission gas pipelines, at the cement works and in the petrochemical indus-try. All failures were caused by an incorrect technical approach. Possible remedial measures are proposed.

  11. Abbreviated Case Studies in Organizational Communication

    Science.gov (United States)

    Wanguri, Deloris McGee

    2005-01-01

    The cases contained within organizational communication texts are generally two to three pages, often followed by questions. These case studies are certainly useful. They generally describe events in the present, provide some type of organizational context, include first-hand data, include a record of what people say and think, develop a…

  12. Mining Product Data Models: A Case Study

    OpenAIRE

    Cristina-Claudia DOLEAN

    2014-01-01

    This paper presents two case studies used to prove the validity of some data-flow mining algorithms. We proposed the data-flow mining algorithms because most part of mining algorithms focuses on the control-flow perspective. First case study uses event logs generated by an ERP system (Navision) after we set several trackers on the data elements needed in the process analyzed; while the second case study uses the event logs generated by YAWL system. We offered a general solution of data-flow m...

  13. Case study on printed matter

    DEFF Research Database (Denmark)

    Introduction Existing product Life Cycle Assessments (LCA’s) on offset printed matter all point at paper as the overall dominating contributor to the impacts from the life-cycle of this category of products. This dominating role of paper is primarily founded in the energy-related impact categories...... global warming, acidification and nutrification. The studies focus on energy consumption including the emissions and impact categories related to energy. The chemical-related impact categories comprising ecotoxicity and human toxicity are not included at all or only to a limited degree. In this paper we...... include these chemical-related impact categories by making use of some of the newest knowledge about emissions from the production at the printing industry combined with knowledge about the composition of the printing materials used during the production of offset printed matter. This paper is based...

  14. A Comparison of Case-Control and Case-Only Designs to Investigate Gene-Environment Interactions Using Breast Cancer Data

    Directory of Open Access Journals (Sweden)

    Jafar Hassanzadeh

    2012-06-01

    Full Text Available Background: The traditional methods of studying the gene-environment interactions need a control group. However, the selection of an appropriate control group has been associated with problems. Therefore, new methods, such as case-only design, have been created to study such interactions. The objective of this study was to compare the case-only and case-control designs using data from patients with breast cancer.Methods: The interaction of genetic and environmental factor as well as the ratio of control to population odds ratio was calculated for case-only (300 patients with breast cancer and case-control (300 cases of breast cancer and 300 matched controls designs. Results: The confidence intervals and -2log likelihood in all variables in case-only design was smaller than those in the matched case-control design. In case-only design, the standard errors of some variables such as age at menarche, the first delivery at the age of 35 yrs and more or no delivery, the history of having live birth, use of oral contraception pills, breastfeeding history were less than those in the matched case-control design. Conclusion: The findings indicate that the case-only design is an efficient method to investigate the interaction of genetic and environmental factors.

  15. A case study in pathway knowledgebase verification

    Directory of Open Access Journals (Sweden)

    Shah Nigam H

    2006-04-01

    Full Text Available Abstract Background Biological databases and pathway knowledgebases are proliferating rapidly. We are developing software tools for computer-aided hypothesis design and evaluation, and we would like our tools to take advantage of the information stored in these repositories. But before we can reliably use a pathway knowledgebase as a data source, we need to proofread it to ensure that it can fully support computer-aided information integration and inference. Results We design a series of logical tests to detect potential problems we might encounter using a particular knowledgebase, the Reactome database, with a particular computer-aided hypothesis evaluation tool, HyBrow. We develop an explicit formal language from the language implicit in the Reactome data format and specify a logic to evaluate models expressed using this language. We use the formalism of finite model theory in this work. We then use this logic to formulate tests for desirable properties (such as completeness, consistency, and well-formedness for pathways stored in Reactome. We apply these tests to the publicly available Reactome releases (releases 10 through 14 and compare the results, which highlight Reactome's steady improvement in terms of decreasing inconsistencies. We also investigate and discuss Reactome's potential for supporting computer-aided inference tools. Conclusion The case study described in this work demonstrates that it is possible to use our model theory based approach to identify problems one might encounter using a knowledgebase to support hypothesis evaluation tools. The methodology we use is general and is in no way restricted to the specific knowledgebase employed in this case study. Future application of this methodology will enable us to compare pathway resources with respect to the generic properties such resources will need to possess if they are to support automated reasoning.

  16. Energy Audit: A Case Study

    Directory of Open Access Journals (Sweden)

    Sanjay Kumar

    2013-06-01

    Full Text Available This India is the Fifth largest producer of Electricalenergy in the world. Despite such achievements the gapbetween demand and supply of electrical energy is increasingevery year and power sector is highly capital – intensive. Thusthe deficit in installed capacity was nearly 10000MWper year.So the gap between demand and supply is continuouslyincreasing day by day. An energy audit is a study of a plant orfacility to determine how and where energy is used and toidentify methods for energy savings. The opportunities lie inthe use of existing renewable energy technologies, greaterefforts at energy efficiency and the dissemination of thesetechnologies and options. This thesis provides an overview of ageneral energy conservation measures (ECMs that can becommonly recommended for NIT Hamirpur. It should be notedthat the Energy auidut presented in this paper does not pretendto be exhaustive nor comprehensive. It provides merely toindicate some of the options that energy auditor can considerwhen performing an analysis of this institute. Energyconservation and exploration of new energy avenues are thewell accepted solution to fulfil the demand in future. The totalcost of energy plays a vital role in determining the product costof a commodity. Therefore the identification of potential energysavings and implementation for a given institutional facility isunimportant to ensure its competitive advantage over otherinstitute. This paper work presents such energy saving methodsin a methodological approach, experienced during a detailedenergy audit of NIT Hamirpur.

  17. Cold Case: Radar investigation of ammonium sulfate cryovolcanism on Titan

    Science.gov (United States)

    Thomann, C.; Hayes, A. G.; Hofgartner, J.; Lunine, J. I.; Le Gall, A.

    2012-12-01

    The detection of a large tidal k2 value from Cassini [1] constitutes very strong evi-dence for a subcrustal ocean, most plausibly dominated by water. However, the secondary constituents are not known. One interesting possibility that has received scant attention in analysis of surface data sets is that the ocean contain aqueous ammonium sulfates, which erupted on the surface in the past to create vast, smooth plains [2]. We adopt the hypothesis that the undifferentiated plains—the "bland-lands" in the mid-latitudes of Titan—are these deposits, and test it using radiometry with SAR data. Lopez et al (this conference) investigate the global distribution and possible origin of this type of unit. We extracted SAR and radiometry-during-SAR data sets from the PDS, and pro-duced maps of brightness temperatures. The SAR imagery was used to identify locations where crossovers exist -some of which are in the undifferentiated plains--and hence where brightness temperatures at different incidence angles are available. We derived emissivities from the data using a simple radiometric model [3] to ac-count for the brightness temperature differences as a function of surface roughness, volume scattering and emissivity. We test the hypothesis by assessing whether the derived emissivities and volume scattering in the bland-lands are consistent with the model cryoclastic ash of ice and ammonium sulfate proposed in [2], distinct from that in other terrains. [1] L. Iess, R.A. Jacobson, M. Ducci, D.J. Stevenson, J.I. Lunine, J.W. Armstrong, S.W. Asmar, P. Racioppa, N.J. Rappaport, P. Tortora, Science, 337, 457 (2012). [2] A.D. Fortes, P.M. Grinrod, S.K. Trickett, L. Vocadlo. Icarus, 188, 139 (2007). [3] T.L. White and J.R. Cogdell. The Moon, 6, 235 (1973).

  18. Investigating Channel Push Branding : The Case of Konftel

    OpenAIRE

    Björkman, Mattias

    2011-01-01

    The role of branding in building distribution relationships has attained increased attention in the marketing literature lately and several studies have shown that branding is an effective tool for building stronger relationships between manufacturers and their distribution partners. Unfortunately these findings fail to explain how channel push strategies work independently of consumer pull strategies when it comes to building strong manufacturer brands. On one hand, it is asserted that close...

  19. Independent Senior Women Who Travel Internationally: A Collective Case Study

    Science.gov (United States)

    Jarrett, Barbara

    2010-01-01

    Nine independent women over age 55 who traveled internationally were investigated through a qualitative case study. The purpose of the study was to explore the women's attitudes, actions, and motivations during and after their international travel experiences. The adult, aging, experiential, and transformational theories of researchers such as…

  20. Towards More Case Study Research in Entrepreneurship

    Directory of Open Access Journals (Sweden)

    Tom Duxbury

    2012-03-01

    Full Text Available Entrepreneurship as an emerging discipline has made good strides, but according to some, has fallen short of bringing its theory and literature up to the standards of others in the management sciences. Rich with the descriptive detail needed for insightful theory building in entrepreneurship, scholars have called for more case study research, particularly those incorporating non-retrospective and longitudinal observations. At the same time however, it has become rare to find such research published in A-level journals dedicated to entrepreneurship. A survey presented here of major entrepreneurship journals over the past six years revealed a publication rate of only 3% using the case study method. This presents a major impediment for developing fresh research in this field based upon the study of real cases. The author explores how the case study method has been applied to entrepreneurship research and provides recommendations for improved publication rates.

  1. Odontoma: a retrospective study of 73 cases

    Energy Technology Data Exchange (ETDEWEB)

    An, Seo Young; An, Chang Hyeon; Choi, Karp Shik [School of Dentistry, Kyungpook National University, Daegu (Korea, Republic of)

    2012-06-15

    The purpose of the present study was to retrospectively evaluate the clinical findings and treatment results for impacted permanent teeth associated with odontomas. We retrospectively investigated 73 odontomas in 72 patients who visited Kyungpook National University Dental Hospital from April 2004 through November 2011. The study was performed using medical records, panoramic radiographs, and pathological reports. Data gathered included age, gender, location, chief complaints, effects on dentition, and treatment of odontoma and the impacted tooth associated with odontoma. Most compound odontomas (46.7%) were found in the second decade and complex odontomas were not related to age. Odontomas showed no gender predilection. Fifty-five cases (75.3%) of odontomas were detected on routine dental radiographs. Sixty percent of compound odontomas occurred in the canine area and 57.1% of complex odontomas in the molar areas. Impaction of permanent teeth (61.6%) was the most common complication on the adjacent teeth. Most odontomas (84.9%) were removed surgically and impacted permanent teeth were managed by surgical removal (53.2%), orthodontic treatment (25.5%), or surgical repositioning (6.4%). There was a statistically significant relation between age and preservation of the impacted permanent teeth associated with odontomas (p<0.01). Early detection and treatment of odontomas increase the possibility of preservation of the impacted tooth. Therefore, it would be suggested that periodic panoramic examination during the first and second decade of life might be beneficial for the early detection and better prognosis of odontomas.

  2. Educational Potential of Case-Study Technology

    OpenAIRE

    Fedorinova, Zoya Vladimirovna; Vorobyeva, Viktoriya Vladimirovna; Malyanova, Marina

    2015-01-01

    This article presents the results of phenomenological and typological analysis of case-study technology educational potential. The definition “educational potential of case-study technology” is given, the main characteristics of which are changed in communication and collaborative activity quality, appearance of educational initiatives, change of participants’ position in learning process, formation of “collective subject” in collaborative activity, increase of learning (subject) results. Dep...

  3. TOP-10 DATA MINING CASE STUDIES

    OpenAIRE

    GABOR MELLI; XINDONG WU; PAUL BEINAT; FRANCESCO BONCHI; LONGBING CAO; RONG DUAN; CHRISTOS FALOUTSOS; RAYID GHANI; BRENDAN KITTS; BART GOETHALS; GEOFF MCLACHLAN; JIAN PEI; ASHOK SRIVASTAVA; OSMAR ZAÏANE

    2012-01-01

    We report on the panel discussion held at the ICDM'10 conference on the top 10 data mining case studies in order to provide a snapshot of where and how data mining techniques have made significant real-world impact. The tasks covered by 10 case studies range from the detection of anomalies such as cancer, fraud, and system failures to the optimization of organizational operations, and include the automated extraction of information from unstructured sources. From the 10 cases we find that sup...

  4. Eccrine Angiomatous Hamartoma: A Retrospective Study of 15 Cases

    OpenAIRE

    Yi-Ting Lin; Chien-Ming Chen; Chih-Hsun Yang; Yea-Huey Chuang

    2012-01-01

    Background: Eccrine angiomatous hamartoma (EAH) comprises a rare nevoid proliferation of normal eccrine glands and small blood vessels and occasionally otherelements in the middle and deep dermis with variable clinical manifestations.Case series have rarely been published except for case reports and literaturereviews. The aims of this article were to investigate the clinical and pathologic features of patients with EAH in Taiwan and to compare our resultswith the results of previous studies.M...

  5. Approximate relationship between frequency-dependent skin depth resolved from geoelectromagnetic pedotransfer function and depth of investigation resolved from geoelectrical measurements: A case study of coastal formation, southern Nigeria

    Indian Academy of Sciences (India)

    N J George; D N Obiora; A M Ekanem; A E Akpan

    2016-10-01

    The task involved in the interpretation of Vertical Electrical Sounding (VES) data is how to get unique results in the absence/limited number of borehole information, which is usually limited to information on the spot. Geological and geochemical mapping of electrical properties are usually limited to direct observations on the surface and therefore, conclusions and extrapolations that can be drawn about thesystem electrical characteristics and possible underlying structures may be masked as geology changes with positions. The electrical resistivity study pedotransfer functions (PTFs) have been linked with the electromagnetic (EM) resolved PTFs at chosen frequencies of skin/penetration depth corresponding to the VES resolved investigation depth in order to determine the local geological attributes of hydrogeological repository in the coastal formation dominated with fine sand. The illustrative application of effective skin depth depicts that effective skin depth has direct relation with the EM response of the local source over the layered earth and thus, can be linked to the direct current earth response functions as an aidfor estimating the optimum depth and electrical parameters through comparative analysis. Though the VES and EM resolved depths of investigation at appropriate effective and theoretical frequencies have wide gaps, diagnostic relations characterising the subsurface depth of interest have been established. Thedetermining factors of skin effect have been found to include frequency/period, resistivity/conductivity, absorption/attenuation coefficient and energy loss factor. The novel diagnostic relations and their corresponding constants between 1-D resistivity data and EM skin depth are robust PTFs necessary for checking the accuracy associated with the non-unique interpretations that characterise the 1-D resistivitydata, mostly when lithostratigraphic data are not available.

  6. Predicting Students Drop Out: A Case Study

    Science.gov (United States)

    Dekker, Gerben W.; Pechenizkiy, Mykola; Vleeshouwers, Jan M.

    2009-01-01

    The monitoring and support of university freshmen is considered very important at many educational institutions. In this paper we describe the results of the educational data mining case study aimed at predicting the Electrical Engineering (EE) students drop out after the first semester of their studies or even before they enter the study program…

  7. Disease investigations : Study of waterfowl botulism

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Studies were done to determine the ecology of the botulism organism Clostridium botulinum Type C and the manner of which toxin is ingested by the waterfowl so that...

  8. Hirsutism: A Clinico-investigative Study

    OpenAIRE

    Chhabra, Sunny; Gautam, Ram Krishnan; Kulshreshtha, Bindu; Prasad, Akhilandeswari; Sharma, Neera

    2012-01-01

    Background: Hirsutism is a common clinical condition characterized by presence of terminal hair at body sites under androgenic influence. Inspite of the significant worldwide prevalence of hirsutism, studies on hirsutism from India are not many. Objective: To assess the etiology of hirsutism and correlate its severity with underlying causes and various hormone levels. Materials and Methods: In this prospective study, 40 patients of hirsutism enrolled on first come basis were included. All pat...

  9. Hybrid Risk Management Methodology: A Case Study

    Directory of Open Access Journals (Sweden)

    Jacky Siu-Lun Ting

    2009-10-01

    Full Text Available Risk management is a decision-making process involving considerations of political, social, economic and engineering factors with relevant risk assessments relating to a potential hazard. In the last decade, a number of risk management tools are introduced and employed to manage and minimize the uncertainty and threats realization to the organizations. However, the focus of these methodologies are different; in which companies need to adopt various risk management principles to visualize a full picture of the organizational risk level. Regarding to this, this paper presents a new approach of risk management that integrates Hierarchical Holographic Modeling (HHM, Enterprise Risk Management (ERM and Business Recovery Planning (BCP for identifying and assessing risks as well as managing the consequences of realized residual risks. To illustrate the procedures of the proposed methodology, a logistic company ABC Limited is chosen to serve as a case study Through applying HHM and ERM to investigate and assess the risk, ABC Limited can be better evaluated the potential risks and then took the responsive actions (e.g. BCP to handle the risks and crisis in near future.

  10. VINCRISTINE INDUCED NEUROTOXICITY: STUDY OF 75 CASES

    Directory of Open Access Journals (Sweden)

    M.T. Arzanian

    2009-08-01

    Full Text Available ObjectiveConcern for side-effects of therapy related to treatment of childhood malignancies is becoming an increasingly important topic. In this study, we evaluated extent of vincristine (VCR induced neurotoxicity in a group of children who underwent chemotherapy, with VCR being part of the regimen.Materials & MethodsIn this investigation, for 75 children (54% boys, 46% girls, aged between 1 to 14 (mean 6.5±4.3 years, serial weekly neurological examinations were performed; of the 75, 70 had acute lymphoblastic leukemia and 5 Wilm's tumor. All patients were on a chemotherapy protocol of at least 4 consecutive VCR (1.5mg/m2 injections.ResultsDecreased deep tendons reflexes were seen in the Achilles reflex in 78%, and the patellar reflex in 53% of patients. Muscle weakness was found in 70% of patients, being mild in 76% of them. Four  percent of patients showed severe weakness. Petosis, jaw pain, hoarseness, abdominal pain and constipation were seen in 15%, 6%, 12%, 12% and 12% respectively. Paresthesia was observed in 32 of 52 patients, over 4 years old. No cases of foot drop, urinary retention or facial nerve palsy were seen in this patient group.ConclusionChildren on usual doses of vincristine regimen may have neuropathic side effects but most of these side effects are mild and not troublesome.Key words: Vincristine, neuropathy, neurotoxicity, side effect

  11. Investigation of Synthetic Mg(1.3)V(1.7)O4 Spinel with MgO Inclusions: Case Study of a Spinel with an Apparently occupied Interstitial Site

    Science.gov (United States)

    Uchida, Hinako; Righter, Kevin; Lavina, Barbara; Nowell, Matthew M.; Wright, Stuart I.; Downs, Robert T.; Yang, Hexiong

    2007-01-01

    A magnesium vanadate spinel crystal, ideally MgV2O4, synthesized at 1 bar, 1200 C and equilibrated under FMQ + 1.3 log f(sub o2) condition, was investigated using single-crystal X-ray diffraction, electron microprobe, and electron backscatter (EBSD). The initial X-ray structure refinements gave tetrahedral and octahedral site occupancies, along with the presence of 0.053 apfu Mg at an interstitial octahedral site . Back-scattered electron (BSE) images and electron microprobe analyses revealed the existence of an Mg-rich phase in the spinel matrix, which was too small (less than or equal to 3microns) for an accurate chemical determination. The EBSD analysis combined with X-ray energy dispersive spectroscop[y (XEDS) suggested that the Mg-rich inclusions are periclase oriented coherently with the spinel matrix. The final structure refinements were optimized by subtracting the X-ray intensity contributions (approx. 9%) of periclase reflections, which eliminated the interstitial Mg. This study provides insight into possible origins of refined interstitial cations reported in the the literature for spinel, and points to the difficulty of using only X-ray diffraction data to distinguish a spinel with interstitial cations from one with coherently oriented MgO inclusions.

  12. Investigating Adaptive Grieving Styles: A Delphi Study

    Science.gov (United States)

    Doughty, Elizabeth A.

    2009-01-01

    There has been an evolution in the understanding of the nature of grief since S. Freud's initial work, Mourning and Melancholia (1917/1953). Mental health practitioners and researchers have established new models to aid in the conceptualization and treatment of grief issues. The purpose of this study was to examine the opinions of experts in the…

  13. Case Study Report about Gender Impact Assessment

    DEFF Research Database (Denmark)

    Faber, Stine Thidemann; Agustin, Lise Rolandsen

    2013-01-01

    The aim of this national case study report is to take a closer look at the use of Gender Impact Assessments in Denmark in order to describe the Danish implementation of this specific Gender Mainstreaming method. By way of analyzing two selected cases (two law proposals put forward by The Danish...... Ministry of Employment and the Danish Ministry of Transport, respectively) the aim is to assess the transformative potential of GIA as it is performed in Denmark....

  14. Gigantic Suprapubic Lymphedema: A Case Study.

    Science.gov (United States)

    Tanhaeivash, Roozbeh; Franiel, Tobias; Grimm, Marc-Oliver; Horstmann, Marcus

    2016-08-01

    We present the first case study of idiopathic gigantic suprapubic lymphedema and buried penis treated with puboscrotal reconstruction in a patient with initial extreme obesity after an extensive weight reduction (120 kg). Massive localized lymphedema of the suprapubic region should be differentiated from the scrotal type. Severe lymphedema could not resolve on its own and weight reduction does not seem to be helpful in such cases. PMID:27574599

  15. Case Study Research Methodology in Nursing Research.

    Science.gov (United States)

    Cope, Diane G

    2015-11-01

    Through data collection methods using a holistic approach that focuses on variables in a natural setting, qualitative research methods seek to understand participants' perceptions and interpretations. Common qualitative research methods include ethnography, phenomenology, grounded theory, and historic research. Another type of methodology that has a similar qualitative approach is case study research, which seeks to understand a phenomenon or case from multiple perspectives within a given real-world context.

  16. Gigantic Suprapubic Lymphedema: A Case Study

    Science.gov (United States)

    Tanhaeivash, Roozbeh; Franiel, Tobias; Grimm, Marc-Oliver

    2016-01-01

    We present the first case study of idiopathic gigantic suprapubic lymphedema and buried penis treated with puboscrotal reconstruction in a patient with initial extreme obesity after an extensive weight reduction (120 kg). Massive localized lymphedema of the suprapubic region should be differentiated from the scrotal type. Severe lymphedema could not resolve on its own and weight reduction does not seem to be helpful in such cases. PMID:27574599

  17. Investigation on University Students' Academic Self-effi-cacy:A Case Study on English Major%大学生学业自我效能感调查--以英语专业作为案例研究

    Institute of Scientific and Technical Information of China (English)

    李倩

    2015-01-01

    班杜拉1977年提出“自我效能”概念,作为“自我效能”的一个分支,“学业(习)自我效能”也已成为近几年的研究重点,但当前的研究调查并没有对大学生群体的学习自我效能感给予足够的关注。因此本研究拟调查当代大学生学习自我效能感现状及其影响因素,研究结果表明当代大学生普遍对自己的学习能力自我效能感评价较高,但是学习行为效能感偏低。影响大学生学业自我效能的因素排在前三位的是:自我成败经验、个人情感态度以及间接经验的获得或榜样作用。%Bandura proposed "self-efficacy" in 1977, and as a branch of "self-efficacy", "academic or learning self-efficacy"has become a focus of research in recent years, but the current studies and investigations have not paid enough attention to uni-versity students' academic self-efficacy, so this paper intends to investigate the current situation and influencing factors of con-temporary university students' learning self-efficacy. The result shows that contemporary university students generally have a high evaluation on their learning ability self-efficacy, but their learning behavior self-efficacy is on the low side. The top three factors influencing university students' academic self-efficacy are experience of individual success and failure, personal emotional attitude, and indirect experience or exemplary role.

  18. 77 FR 45378 - Guidelines for Cases Requiring On-Scene Death Investigation

    Science.gov (United States)

    2012-07-31

    ... Institute of Justice, Scientific Working Group for Medicolegal Death Investigation will make available to... of Justice Programs Guidelines for Cases Requiring On-Scene Death Investigation AGENCY: National... Investigation''. The opportunity to provide comments on this document is open to coroner/medical examiner...

  19. Clean Cities Case Study: Barwood Cab Fleet Study Summary

    International Nuclear Information System (INIS)

    Barwood Cab Fleet Study Summary is the second in a new series called''Alternative Fuel Information Case Studies,'' designed to present real-world experiences with alternative fuels to fleet managers and other industry stakeholders

  20. Social Studies Project Evaluation: Case Study and Recommendations.

    Science.gov (United States)

    Napier, John

    1982-01-01

    Describes the development and application of a model for social studies program evaluations. A case study showing how the model's three-step process was used to evaluate the Improving Citizenship Education Project in Fulton County, Georgia is included. (AM)

  1. Connecting Reading and Writing: A Case Study

    Science.gov (United States)

    Li, Zhanfang

    2015-01-01

    Connecting reading and writing, proposed by many scholars, is realized in this case study. The 30 participants in this study are the English majors of the third year in one School of Foreign Languages in Beijing. They are encouraged to write journals every week, based on the source text materials in their Intensive Reading class, with the final…

  2. Collaborative Assessment: Middle School Case Study

    Science.gov (United States)

    Parkison, Paul T.

    2014-01-01

    Utilizing a participant observer research model, a case study of the efficacy of a collaborative assessment methodology within a middle school social studies class was conducted. A review of existing research revealed that students' perceptions of assessment, evaluation, and accountability influence their intrinsic motivation to learn. A…

  3. A Multiple Case Study of Innovation

    Science.gov (United States)

    Zheng, Wei; Khoury, Anne E.

    2008-01-01

    This study aims to explore how leadership and contextual factors influence innovation in R&D teams in national laboratories, using the approach of multiple case studies. This paper provides some preliminary findings from two highly innovative teams residing in two national laboratories in the US. The preliminary results suggested several common…

  4. Measuring marketing performance - A case study

    OpenAIRE

    Laakso, Vesa-Pekka

    2011-01-01

    PURPOSE OF THE STUDY The purpose of this study is to develop a marketing dashboard for a Finnish company that operates in the financial industry. The identification of suitable metrics for assessing marketing performance is considered central. This study proposes a new construct (a dashboard) that aims to providing management relevant information on marketing performance from decision-making perspective. METHODOLOGY AND DATA The methodology is a constructive case study. In the...

  5. Evaluation of TB Case Finding through Systematic Contact Investigation, Chhattisgarh, India

    Directory of Open Access Journals (Sweden)

    Kshitij Khaparde

    2015-01-01

    Full Text Available Rationale. Contact investigation is an established tool for early case detection of tuberculosis (TB. In India, contact investigation is not often conducted, despite national policy, and the yield of contact investigation is not well described. Objective. To determine the yield of evaluating household contacts of sputum smear-positive TB cases in Rajnandgaon district, Chhattisgarh, India. Methods. Among 14 public health care facilities with sputum smear microscopy services, home visits were conducted to identify household contacts of all registered sputum smear-positive TB cases. We used a standardized protocol to screen for clinical symptoms suggestive of active TB with additional referral for chest radiograph and sputa collection. Results. From December 2010 to May 2011, 1,556 household contacts of 312 sputum smear-positive TB cases were identified, of which 148 (9.5% were symptomatic. Among these, 109 (73.6% were evaluated by sputum examination resulting in 11 cases (10.1% of sputum smear-positive TB and 4 cases (3.6% of smear-negative TB. Household visits contributed additional 63% TB cases compared to passive case detection alone. Conclusion. A standard procedure for conducting household contact investigation identified additional TB cases in the community and offered an opportunity to initiate isoniazid chemoprophylaxis among children.

  6. Exploring the Six Sigma phenomenon using multiple case study evidence

    OpenAIRE

    Nonthaleerak, P; Hendry, L

    2008-01-01

    Purpose – This research paper aims to: explore areas of weakness in six sigma implementations that may require enhancements in the methodology; to investigate implementation differences between manufacturing and services; and to investigate critical success factors. Design/methodology/approach – Exploratory empirical evidence is presented from nine case study companies in Thailand, including manufacturers, sales and service companies and a national airline. Findings – Key findings include: si...

  7. The Effects of Macroglossia on Speech: A Case Study

    Science.gov (United States)

    Mekonnen, Abebayehu Messele

    2012-01-01

    This article presents a case study of speech production in a 14-year-old Amharic-speaking boy. The boy had developed secondary macroglossia, related to a disturbance of growth hormones, following a history of normal speech development. Perceptual analysis combined with acoustic analysis and static palatography is used to investigate the specific…

  8. Critical Thinking and Online Supplemental Instruction: A Case Study

    Science.gov (United States)

    Shaw, Cassandra S.; Holmes, Karen E.

    2014-01-01

    A wealth of research is available regarding supplemental instruction; however, a dearth exists regarding online supplemental instruction and critical thinking. This case study explored what was assumed to be known of critical thinking and investigated the extent to which critical thought was promoted within a university's online supplemental…

  9. JOB REDESIGN FOR OLDER WORKERS, TEN CASE STUDIES.

    Science.gov (United States)

    MITNICK, EDWARD; ROTHBERG, HERMAN

    AFTER IDENTIFYING FIRMS WHICH HAD USED JOB REDESIGN TO SALVAGE THE SKILL OF OLDER EMPLOYEES, RESEARCH INVESTIGATORS MADE 10 INTENSIVE CASE STUDIES IN FIRMS PRODUCING AIRCRAFT ENGINES, ALUMINUM FRAMING, BUILDING MATERIALS, CARPETS, COMPUTERS, COPPER PIPE FITTINGS, FOOTWEAR, HEAVY IRON PIPE, PRECISION INSTRUMENTS, AND PRINTED NOVELTIES. EACH STUDY…

  10. Management Science in Higher Education Institutions: Case Studies from Greece

    Science.gov (United States)

    Saiti, Anna

    2010-01-01

    Regardless of the source of funding, university quality is based on knowledge, teaching, and research, and hence cannot be run like private enterprises as they are expert organisations that provide solely a public service. The purpose of this paper is to investigate, through the analysis of case studies, whether or not management theory,…

  11. Integrated Bioprocess Design: A Case Study for Undergraduates.

    Science.gov (United States)

    Titchener-Hooker, Nigel; Zhou, Yu-Hong

    2000-01-01

    Presents a case study for use in the teaching of bioprocess design. Taking the production and isolation of the intracellular protein s. cerevisae, demonstrates how undergraduates can use a range of data to construct and then investigate the range of processes flowsheet options available for a process duty. (Author/SAH)

  12. Parent Implementation of RECALL: A Systematic Case Study

    Science.gov (United States)

    Whalon, Kelly; Hanline, Mary Frances; Davis, Jackie

    2016-01-01

    This systematic case study utilized a repeated acquisition design to investigate the impact of a caregiver-implemented RECALL (Reading to Engage Children with Autism in Language and Learning) on the correct, unprompted responses of a young child with autism spectrum disorder (ASD). RECALL is an adapted shared reading intervention that includes a…

  13. Mining Product Data Models: A Case Study

    Directory of Open Access Journals (Sweden)

    Cristina-Claudia DOLEAN

    2014-01-01

    Full Text Available This paper presents two case studies used to prove the validity of some data-flow mining algorithms. We proposed the data-flow mining algorithms because most part of mining algorithms focuses on the control-flow perspective. First case study uses event logs generated by an ERP system (Navision after we set several trackers on the data elements needed in the process analyzed; while the second case study uses the event logs generated by YAWL system. We offered a general solution of data-flow model extraction from different data sources. In order to apply the data-flow mining algorithms the event logs must comply a certain format (using InputOutput extension. But to respect this format, a set of conversion tools is needed. We depicted the conversion tools used and how we got the data-flow models. Moreover, the data-flow model is compared to the control-flow model.

  14. Integrating Ethics into Case Study Assignments

    Directory of Open Access Journals (Sweden)

    Pamela A. Marshall

    2014-08-01

    Full Text Available I teach an upper-level writing course, Genes, Race, Gender, and Society, designed for Life Science majors, in which I utilize a case study to expose students to ethical ways of thinking.  Students first work through the topical case study and then are challenged to rethink their responses through the lenses of ethics, taking into account different ethical frameworks.  Students then develop their own case study, integrating ethical components.  I want to expose my students to this way of thinking because I see technology being driven by the Jurassic Park phenomenon, "Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should." and want future physicians grounded in a sense of how their actions relate to the greater good.

  15. Cryostat design case studies, principles and engineering

    CERN Document Server

    2016-01-01

    This book enables the reader to learn the fundamental and applied aspects of practical cryostat design by examining previous design choices and resulting cryostat performance. Through a series of extended case studies the book presents an overview of existing cryostat design covering a wide range of cryostat types and applications, including the magnet cryostats that comprise the majority of the Large Hadron Collider at CERN, space-borne cryostats containing sensors operating below 1 K, and large cryogenic liquid storage vessels. It starts with an introductory section on the principles of cryostat design including practical data and equations. This section is followed by a series of case studies on existing cryostats, describing the specific requirements of the cryostat, the challenges involved and the design choices made along with the resulting performance of the cryostat. The cryostat examples used in the studies are chosen to cover a broad range of cryostat applications and the authors of each case are ...

  16. Shuttle Case Study Collection Website Development

    Science.gov (United States)

    Ransom, Khadijah S.; Johnson, Grace K.

    2012-01-01

    As a continuation from summer 2012, the Shuttle Case Study Collection has been developed using lessons learned documented by NASA engineers, analysts, and contractors. Decades of information related to processing and launching the Space Shuttle is gathered into a single database to provide educators with an alternative means to teach real-world engineering processes. The goal is to provide additional engineering materials that enhance critical thinking, decision making, and problem solving skills. During this second phase of the project, the Shuttle Case Study Collection website was developed. Extensive HTML coding to link downloadable documents, videos, and images was required, as was training to learn NASA's Content Management System (CMS) for website design. As the final stage of the collection development, the website is designed to allow for distribution of information to the public as well as for case study report submissions from other educators online.

  17. Poor EFL Learners’ Metacognitive Reading Strategies: A Case Study

    OpenAIRE

    Majid Farahian

    2016-01-01

    This study was designed to investigate the reading difficulty of some foreign language (FL) learners who were unsuccessful at English reading comprehension. It was hoped that a case study would yield a more comprehensive picture of the group of learners’ nature of problem. Through a purposive sampling, twenty five English as Foreign language (EFL) poor readers whose progress in reading comprehension courses was a matter of concern were selected. In the light of Li and Munby’s (1996) study, th...

  18. SYNONYMS IN ACTION: A CASE STUDY

    Directory of Open Access Journals (Sweden)

    Rebecca Clift

    2003-05-01

    Full Text Available This paper discusses what the methods of conversation analysis (CA might have to offer the study of linguistic synonymy. It takes as a case study two items commonly held to be synonyms -'actually' and 'in fact'- and shows considerable differences between the two in their interactional implementation: they are implicated in the prosecution of differing courses of action. Such cases argue that it is analytically more profitable to consider what a lexical item does in the context of talk than what it means.

  19. Repurposing legacy data innovative case studies

    CERN Document Server

    Berman, Jules J

    2015-01-01

    Repurposing Legacy Data: Innovative Case Studies takes a look at how data scientists have re-purposed legacy data, whether their own, or legacy data that has been donated to the public domain. Most of the data stored worldwide is legacy data-data created some time in the past, for a particular purpose, and left in obsolete formats. As with keepsakes in an attic, we retain this information thinking it may have value in the future, though we have no current use for it. The case studies in this book, from such diverse fields as cosmology, quantum physics, high-energy physics, microbiology,

  20. Using Radon-222 as a Naturally Occurring Tracer to investigate the streamflow-groundwater interactions in a typical Mediterranean fluvial-karst landscape: the interdisciplinary case study of the Bussento river (Campania region, Southern Italy).

    Science.gov (United States)

    Cuomo, Albina; Guida, Michele; Guida, Domenico; Villani, Paolo; Guadagnuolo, Davide; Longobardi, Antonia; Siervo, Vincenzo

    2010-05-01

    Karst aquifers provide 25% of the overall drinking water resources to the world's population and sustain aquatic life in most fluvial systems, providing several ecological services to human beings, although, because of their complex links between surface and groundwater, turn out to be very vulnerable to contamination and pollution. This paper describes the preliminary findings from Radon-222 activity concentration measurement data collected in streamflow and instream springs during monthly field campaigns, performed from September 2007 to December 2008, in a typical Mediterranean karst river: the Bussento river (Campania region, Southern Italy). The general aim is to investigate the complex interactions and exchanges between streamflow and groundwater, at scales that are imperceptible to standard hydrological and hydraulic analyses. In fact, the study area is located inside the Cilento and Vallo di Diano National Park and, therefore, the management of its relevant water resources requires not only groundwater protection for domestic drinking use, but also riverine wildlife preservation and coastal water quality maintenance. As a support for hydro-geomorphological and hydrological modelling for planning tasks, in application of the European Water Framework Directive (EWFD), a Bussento River Monitoring System (BRMS) has been built, at basin, segment and reach scale. Experimental data about 222Rn concentrations, in addition to physical-chemical and streamflow rate, have been acquired and managed from BRMS selected stations, sampling the streamflow and inflow spring waters by means of the Radon-in-Air analyzer, RAD7, together with the Radon-in-water accessories, Radon Water Probe and RAD7H2O (DURRIDGE Co. Inc.), for continuous and batch sampling measurements, respectively. During preliminary surveys, appropriate sampling procedures and measurement protocols have been tested, taking into account the different local hydrogeological and hydrological situations occurring

  1. Corporate Social Responsibility : A Case Study

    OpenAIRE

    Björkqvist, Kira

    2012-01-01

    The importance of taking responsibility for the common environmental and social welfare has become of essence in the business world of the 21st century. This thesis provides the reader with knowledge on corporate social responsibility (CSR) and shows the reader a comparative study on how CSR is reported on in three case study companies chosen for this thesis. This thesis is a descriptive study that uses the research method of content analysis to determine the commonalities and differences...

  2. Collagenous ileitis: a study of 13 cases.

    Science.gov (United States)

    O'Brien, Blake Hugh; McClymont, Kelly; Brown, Ian

    2011-08-01

    Collagenous ileitis (CI), characterized by subepithelial collagen deposition in the terminal ileum, is an uncommon condition. The few cases reported to date have been associated with collagenous colitis (CC) or lymphocytic colitis. Thirteen cases of CI retrieved over a 9-year period were retrospectively studied. There were 7 female and 6 male patients, with an age range of 39 to 72 years (mean, 64 y). Two groups were identified: (1) CI associated with collagenous or lymphocytic disease elsewhere in the gastrointestinal tract and (2) CI as an isolated process. Diarrhea was the presenting symptom in 11 cases. Most patients had no regular medication use. Subepithelial collagen thickness ranged from 15 to 100 μm (mean, 32 μm) and involved 5% to 80% of the subepithelial region of the submitted biopsies. Six cases had >25 intraepithelial lymphocytes (IELs)/100 epithelial cells, and villous blunting was observed in 11 cases. Chronic inflammation of the lamina propria was present in 9 cases, and focal neutrophil infiltration was identified in 3 cases. In biopsies taken from other sites, 7 of 13 colonic biopsies showed CC, 4 of 9 gastric biopsies showed collagenous gastritis, and 2 of 10 duodenal biopsies were abnormal with collagenous sprue (n=1) and partial villous atrophy and increased IELs (n=1) (both celiac disease related). Resolution of the subepithelial collagen deposition was found in the 1 case in which follow-up of terminal ileal biopsies were taken. There was partial or complete resolution of symptoms in 6 of 9 patients for whom follow-up information was available. PMID:21716082

  3. Bilingual education in Slovakia: A Case Study

    Directory of Open Access Journals (Sweden)

    Silvia Pokrivčáková

    2013-06-01

    Full Text Available Bilingual education is one of the areas in contemporary education that brings out some important controversies (philosophical, conceptual, sociological, political, economical, etc. and thus calls for extensive and intensive debate. Bilingual education in Europe (and here the European Union countries are meant has gained a very different status, due to the general European policy of developing language diversity and promoting “European plurilingualism and multilingualism”. In Slovakia, one of the younger members of the EU, bilingual education became an extraordinarily popular instrument for the fulfilment of this task.  Since the specifically defined topic of bilingual education and its current status in Slovakia has not been studied and systematically reviewed yet, the research presented in this paper was designed as a single-phenomenon revelatory case study investigating seven research areas: reflection of bilingual education in school legislation and state pedagogical documents, purposes of bilingual education in Slovakia, its organization (levels and types of schools, foreign languages incorporated, teachers, structure of bilingual schools curricula, types of bilingual education applied at Slovak bilingual schools, and how bilingual education is both reflected in and saturated by the latest research findings. The conclusions presented in the paper were collected from multiple sources: state curriculum, statistical data published by the Slovak Ministry of Education or its partner institutions, international treaties on establishing and supporting bilingual sections of schools, bilingual schools curricula, interviews with school directors, teachers, and learners, direct observations at bilingual schools, research studies and research reports, etc. In the conclusion, bilingual education in Slovakia is identified as a unique, dynamically developing system which is both significantly shaped by the foreign language education policy promoted by

  4. INVESTIGATION OF OSCILLATORY SOLUTIONS OF DIFFERENTIAL-DIFFERENCE EQUATIONS OF SECOND ORDER IN A CRITICAL CASE

    Directory of Open Access Journals (Sweden)

    E. P. Kubyshkin

    2015-01-01

    Full Text Available We consider a differential-difference equation of second order of delay type, containing the delay of the function and its derivatives. Such equations occur in the modeling of electronic devices. The nature of the loss of the zero solution stability is studied. The possibility of stability loss related to the passing of two pairs of purely imaginary roots, that are in resonance 1:3, through an imaginary axis is shown. In this case bifurcating oscillatory solutions are studied. It is noted the existence of a chaotic attractor for which Lyapunov exponents and Lyapunov dimension are calculated. As an investigation techniques we use the theory of integral manifolds and normal forms method for nonlinear differential equations.

  5. Microbial study of meningitis and encephalitis cases.

    Science.gov (United States)

    Selim, Heba S; El-Barrawy, Mohamed A; Rakha, Magda E; Yingst, Samuel L; Baskharoun, Magda F

    2007-01-01

    Meningitis and/or encephalitis can pose a serious public health problem especially during outbreaks. A rapid and accurate diagnosis is important for effective earlier treatment. This study aimed to identify the possible microbial causes of meningitis and/or encephalitis cases. CSF and serum samples were collected from 322 patients who had signs and symptoms suggestive of meningitis and/or encephalitis. Out of 250 cases with confirmed clinical diagnosis, 83 (33.2%) were definitely diagnosed as bacterial meningitis and/or encephalitis cases (by using CSF culture, biochemical tests, latex agglutination test, and CSF stain), 17 (6.8%) were definitely diagnosed as having viral causes ( by viral isolation on tissue culture, PCR and ELISA), and one (0.4%) was diagnosed as fungal meningitis case (by India ink stain, culture, and biochemical tests). Also, there was one encephalitis case with positive serum ELISA IgM antibodies against Sandfly scilian virus. N. meningitidis, S. pneumonia and M. tuberculosis were the most frequently detected bacterial agents, while Enteroviruses, herpes simplex viruses and varicella zoster viruses were the most common viral agents encountered. Further studies are needed to assess the role of different microbial agents in CNS infections and their effective methods of diagnosis.

  6. WMOST v2 Case Study: Monponsett Ponds

    Science.gov (United States)

    This webinar presents an overview of the preliminary results of a case study application of EPA's Watershed Management Optimization Support Tool v2 (WMOST) for stakeholders in the Monponsett Ponds Watershed Workgroup. Monponsett Ponds is a large water system consisting of two ba...

  7. Teaching the Holocaust through Case Study

    Science.gov (United States)

    Misco, Thomas

    2009-01-01

    This article responds to the curricular challenges teachers face with Holocaust education, including cursory treatments and a lack of focus on individual experiences. First, the author argues for a case-study approach to help students reengage concrete and complex features of the Holocaust as a point of departure for subsequent inquiry. In…

  8. Lifelong Learning in SMEs: A Case Study.

    Science.gov (United States)

    Holden, Rick; Smith, Vikki; Devins, Dave

    2002-01-01

    Learning centers using information-communications technologies were established in three British industrial estates. A case study of one organization shows the center contributed to lifelong learning and enhanced information technology training and employee confidence. Transfer of training and productivity improvements were not as clear. (Contains…

  9. It's Not Funny: A Case Study

    Science.gov (United States)

    Méndez-Morse, Sylvia

    2015-01-01

    This case study may be used with personnel supervision, school law, and other school leadership courses. It describes the behavior and actions of one teacher toward another. Student discussions can focus on supervision, workplace mobbing, workplace bullying, as well as sexual harassment. Students should focus on a school leader's role in such…

  10. Physical Science Connected Classrooms: Case Studies

    Science.gov (United States)

    Irving, Karen; Sanalan, Vehbi; Shirley, Melissa

    2009-01-01

    Case-study descriptions of secondary and middle school classrooms in diverse contexts provide examples of how teachers implement connected classroom technology to facilitate formative assessment in science instruction. Connected classroom technology refers to a networked system of handheld devices designed for classroom use. Teachers were…

  11. The Verbal Noncommunicator: A Case Study.

    Science.gov (United States)

    Fujiki, Martin; Brinton, Bonnie

    1991-01-01

    This article presents a case study of a nine-year-old male with language impairment and specific pragmatic disabilities. His interactions with an adult, a language age-matched peer, and a chronological age-matched peer were observed and analyzed to determine conversational responsiveness and assertiveness. Findings support Fey's (1986) verbal…

  12. Acoustical case studies of three green buildings

    Science.gov (United States)

    Siebein, Gary; Lilkendey, Robert; Skorski, Stephen

    2005-04-01

    Case studies of 3 green buildings with LEED certifications that required extensive acoustical retrofit work to become satisfactory work environments for their intended user groups will be used to define areas where green building design concepts and acoustical design concepts require reconciliation. Case study 1 is an office and conference center for a city environmental education agency. Large open spaces intended to collect daylight through clerestory windows provided large, reverberant volumes with few acoustic finishes that rendered them unsuitable as open office space and a conference room/auditorium. Case Study 2 describes one of the first gold LEED buildings in the southeast whose primary design concepts were so narrowly focused on thermal and lighting issues that they often worked directly against basic acoustical requirements resulting in sound levels of NC 50-55 in classrooms and faculty offices, crosstalk between classrooms and poor room acoustics. Case study 3 is an environmental education and conference center with open public areas, very high ceilings, and all reflective surfaces made from wood and other environmentally friendly materials that result in excessive loudness when the building is used by the numbers of people which it was intended to serve.

  13. Performance-Related Pay: A Case Study.

    Science.gov (United States)

    Swabe, A. I. R.

    1989-01-01

    Discusses performance-related pay and why the system was introduced, how it was negotiated, and how it has operated. The case study illustrated is in a British financial services company where the system was negotiated in 1986 and began in 1987. (JOW)

  14. Acquaintance Rape: A Case Study Approach.

    Science.gov (United States)

    Marinelli, Rosalie D.

    1994-01-01

    Describes a case study approach to acquaintance rape used in a Personal Health and Lifestyles course at the University of Nevada in Reno that allows students to discuss the characters in a scenario, an instructional process seen as less threatening than describing personal experiences. (MDM)

  15. A Case Study on Distributed Antenna Systems

    DEFF Research Database (Denmark)

    Sørensen, Troels Bundgaard

    2007-01-01

    to changing interference and traffic conditions are less common, despite their potential for increased capacity in comparison with traditional (pico)cellular based concepts. This chapter explores a case study of one indoor environment where the site-specific propagation characteristics are taken into account...

  16. Case Studies on Globalization and Money Laundering

    OpenAIRE

    Eckhard Freyer

    2008-01-01

    Financial globalization has greatly improved the efficiency of capital transfers around the world, with the cost of facilitating criminal money laundering activities. Based on case studies on conditions for money laundering in the process of globalization and transformation in Europe, are discussed the challenges that a “global financial village” must confront.

  17. A CASE STUDY OF ENVIRONMENTAL DATA MANAGEMENT

    Science.gov (United States)

    In order to support our ongoing research in watershed ecology and global climate change, we gather and analyze environmental data from several government agencies. This case study demonstrates a researcher’s approach to accessing, organizing, and using intersectoral data. T...

  18. Comparative Environmental Threat Analysis: Three Case Studies.

    Science.gov (United States)

    Latour, J. B.; Reiling, R.

    1994-01-01

    Reviews how carrying capacity for different environmental problems is operationalized. Discusses whether it is possible to compare threats, using the exceeding of carrying capacity as a yardstick. Points out problems in comparative threat analysis using three case studies: threats to European groundwater resources, threats to ecosystems in Europe,…

  19. Learning Machine Learning: A Case Study

    Science.gov (United States)

    Lavesson, N.

    2010-01-01

    This correspondence reports on a case study conducted in the Master's-level Machine Learning (ML) course at Blekinge Institute of Technology, Sweden. The students participated in a self-assessment test and a diagnostic test of prerequisite subjects, and their results on these tests are correlated with their achievement of the course's learning…

  20. Climate wise case study compendium: Report 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-02-01

    This case study compendium is one of several Climate Wise tools available to help interested companies identify cost-effective options. Climate Wise, a private-public partnership program, is a key Federal initiative to return greenhouse gas emissions to 1990 levels by 2000.

  1. Fraternization in Accounting Firms: A Case Study

    Science.gov (United States)

    Heinze, Tim; Kizirian, Tim; Leese, Wallace

    2004-01-01

    This case study sheds light on how to avoid risks caused by manager-subordinate dating relationships (fraternization) such as employee misunderstandings, retaliation charges, favoritism complaints, wrongful termination lawsuits, and sexual harassment lawsuits, as well as associated ethical risks. Risk avoidance can be accomplished through a better…

  2. ESL and Digital Video Integration: Case Studies

    Science.gov (United States)

    Li, J., Ed.; Gromik, N., Ed.; Edwards, N., Ed.

    2013-01-01

    It should come as no surprise that digital video technology is of particular interest to English language learners; students are drawn to its visual appeal and vibrant creative potential. The seven original case studies in this book demonstrate how video can be an effective and powerful tool to create fluid, fun, interactive, and collaborative…

  3. Transformational change in healthcare: an examination of four case studies.

    Science.gov (United States)

    Charlesworth, Kate; Jamieson, Maggie; Davey, Rachel; Butler, Colin D

    2016-04-01

    Objectives Healthcare leaders around the world are calling for radical, transformational change of our health and care systems. This will be a difficult and complex task. In this article, we examine case studies in which transformational change has been achieved, and seek to learn from these experiences. Methods We used the case study method to investigate examples of transformational change in healthcare. The case studies were identified from preliminary doctoral research into the transition towards future sustainable health and social care systems. Evidence was collected from multiple sources, key features of each case study were displayed in a matrix and thematic analysis was conducted. The results are presented in narrative form. Results Four case studies were selected: two from the US, one from Australia and one from the UK. The notable features are discussed for each case study. There were many common factors: a well communicated vision, innovative redesign, extensive consultation and engagement with staff and patients, performance management, automated information management and high-quality leadership. Conclusions Although there were some notable differences between the case studies, overall the characteristics of success were similar and collectively provide a blueprint for transformational change in healthcare. What is known about the topic? Healthcare leaders around the world are calling for radical redesign of our systems in order to meet the challenges of modern society. What does this paper add? There are some remarkable examples of transformational change in healthcare. The key factors in success are similar across the case studies. What are the implications for practitioners? Collectively, these key factors can guide future attempts at transformational change in healthcare. PMID:26188916

  4. Empathy Development Through Case Study and Simulation.

    Science.gov (United States)

    Mennenga, Heidi A; Bassett, Susan; Pasquariello, Libby

    2016-01-01

    Because empathy is integral to the nurse-patient relationship, nurse educators are challenged to explore teaching strategies that may aid in the development of empathy among students. The purpose of this study was to determine whether consistent exposure to a single patient through case study and simulation had an impact on empathy levels in senior-level baccalaureate nursing students. Results provide interesting conclusions for faculty members and offer a basis for ongoing discussion.

  5. Mobile Technologies Adoption: An Exploratory Case Study

    Institute of Scientific and Technical Information of China (English)

    CHU Yan; HUANG Lihua

    2008-01-01

    Based on the theory of task-technology fit and literature review of mobile technology acceptance, a research model is presented based on the features of mobile technologies and the actual usage of mobile applications in business environments, which identifies the characteristics of mobile applications and fitting tasks. An exploratory case is studied to understand how ABC Company, Hong Kong, utilizes mobile selling applications in their sales management process. This study gives some managerial suggestions for enterprises to successfully use mobile applications.

  6. Case studies on selected natural food antioxidants

    OpenAIRE

    Herrero, Miguel; Mendiola, J. A.; Cifuentes, Alejandro; Ibáñez, Elena

    2013-01-01

    In this chapter, a broad description of several case studies related to common antioxidants found in food-related products is presented. In this regard, special attention is put on the novel advanced environmentally-friendly extraction methods nowadays employed to extract and purify those potent antioxidants from natural matrices. A brief description of these extraction processes is provided together with some of the instrumentation needed. Besides, the studies carried out so f...

  7. MARKET INTEGRATION: CASE STUDIES OF STRUCTURAL CHANGE

    OpenAIRE

    Franken, Jason R.V.; Parcell, Joseph L.

    2003-01-01

    The grain/oilseed industry is undergoing considerable structural change in the form of mergers and the addition of new processing facilities to add value beyond commodity grade. The rapid structural changes in this industry call into question the relevance of previous research conducted in these areas. Focusing on two structural change events in northeast Missouri as case studies provides an incisive glimpse at the larger impact of structural change on the grain/oilseed industry. This study a...

  8. Success against the odds: A case study

    OpenAIRE

    Ahmadbayli, Aydan

    2015-01-01

    The purpose of this dissertation is to examine the leadership behaviours and practices necessary for school ‘turnaround’. The research was conducted by taking a multi perspective approach within a qualitative research study to explore the case of a UK based school facing ‘special measures’ and in disadvantaged circumstances. Research methods employed include a documentary study and semi-structured interviews with six members of staff. The results indicated that effective turnaround leaders em...

  9. Can We Generalize from Case Studies?

    OpenAIRE

    Paul F. Steinberg

    2015-01-01

    This article considers the role of generalization in comparative case studies, using as exemplars the contributions to this special issue on climate change politics. As a research practice, generalization is a logical argument for extending one’s claims beyond the data, positing a connection between events that were studied and those that were not. No methodological tradition is exempt from the requirement to demonstrate a compelling logic of generalization. The article presents a taxonomy of...

  10. CAT: A CASE STUDY OF GRE

    Institute of Scientific and Technical Information of China (English)

    WangZe; ChenJiliang

    2004-01-01

    The Computer Adaptive Testing (CAT) has developedsuccessfully with its adoption by testing agencies. The authors ofthis paper point out the advantages and disadvantages of CATsand then take GRE as a case study to probe into the scoringalgorithm in CAT. By analyzing some typical score reports ofcomputer-adaptive GRE General Test, they study some majorfactors affecting the final score such as the percentage ofcorrectness and difficulty levels.

  11. The Malevolence of Technology: An Investigation into the Various Socio-Economic Impacts of Excessive Cell Phone Use among University Students (A Case Study of University of Malakand, KPK Pakistan)

    OpenAIRE

    Arab Naz; Waseem Khan; Umar Daraz; Mohammad Hussain

    2011-01-01

    Technological malevolence is among the loosely debated issues in the current scenario of modernity. Most of the studies emphasize over its lucrative aspect where the current study violates the traditional paradigm because of illuminating the darken face of technological advancement. The current study is an attempt to explore that the communicational technology in shape of cell phone (abuse) is one of the hazardous move in the course of development that brings jeopardy to social cohesion, adju...

  12. A CASE STUDY OF LEARNING WRITING IN A CMC ENVIRONMENT

    Institute of Scientific and Technical Information of China (English)

    GuoHongjie; ZhouQinqin

    2004-01-01

    This study focused on an EFL writing class via computer-mediated communication (CMC) in an online virtual environment. The purpose was twofold: first to investigate how the constructivist learning theory is perfectly reflected in the online learning environment, and secondly to provide an indepth case study of CMC-based EFL writing instruction. The results indicated that learning EFL writing in a CMC environment fits in with the current trend of constructivist language learning theory and the communicative teaching approach.

  13. An investigative report on information literacy training of individual farmers in central China and on issues related to remedial measures:A case study of farmers information literacy in a few districts of Hubei province

    Institute of Scientific and Technical Information of China (English)

    YU; Jiaoping; XU; Yangkui; DUAN; Yaoqing; Charles; C.Yan

    2009-01-01

    This paper introduced first a conceptual framework of"information literacy training of farmers"based on the widely recognized understanding of the term"information literacy(IL)."It then followed with a discussion based on these three authors’field investigation regarding to Hubei peasants’current information literacy training in such perspectives as information consciousness,information ability and ways and means of information access.It concluded by pointing out some of the more apparent factors that had adverse impacts on the farmers’information literacy training in central China and suggested a few possible remedial measures to guide the course for those who are involved in such undertakings.

  14. Investigating the Link between self-citation and authors’ co-incidence with journal impact factors in Iran: Case study of Economic Journals indexed in Islamic Science Citation Database

    Directory of Open Access Journals (Sweden)

    Hashem Attapour

    2010-03-01

    Full Text Available   The present paper examines the links between self-citation and authors’ co-incidence with impact factors of economic journals indexed in ISC. It is essentially a scientometric research employing citation analysis and literature survey. Data was collected by querying ISC and leafing through the journals studied. Self-citation, authors’ co-incidence and impact factor of the journal studied formed the variables. Correlation analysis indicated that there is a significance between authors’ self-citations and co-incidence with impact factor of the journals studied. Significance was also found between authors’ co-incidence and self-citation of the journals studied.

  15. the Comparative study on two Models of syndrome differentiation of the Hand, Foot and Mouth disease:an Investigation analysis of the signs and symptoms on 2 325 Cases

    Institute of Scientific and Technical Information of China (English)

    Fan Nie; Ke Hong; Hui-juan Li; Xiu-hui Li; Shuang-jie Li; Wei Zhang; Qing-jing Zhu; Lu-kun Zhang; Guang Nie

    2014-01-01

    Objective To realize the characteristics of“zheng”differentiation-treatment for hand, foot and mouth disease (HFMD), a new methodology of syndrome differentiation for different stages of HFMD has been explored. Methods Total of 2 325 cases with HFMD were recorded by distributing them into exterior syndrome stage, interior syndrome stage, severe syndrome stage and recovered syndrome stage, respectively, and the main symptoms and subsidiary symptoms of different stages of HFMD have been observed. The major and minor pathogenesis of HFMD in different stages were obtained, and compared with the “2010 Guideline for the Diagnosis and Treatment of HFMD”. Results It was found that the major pathogenesis of exterior stage was deifned as“the invation of the wen-evil to the defender of the body with the collaterals got involved”, and the minor as“qi deifciency”;in interior stage,“the fury of Gan-Yang”was the main pathogenesis, and“qi in chaos and qi deifciency”was the minor;in severe syndrome stage,“the damage of heart, liver and lung”was the main pathogenesis, and“qi in chaos”was the minor;and the pathogenesis of recovered stage was“qi-yin deficiency”. Compared with the“2010 Guideline for the Diagnosis and Treatment of HFMD”, it showed that“the obstruction of the fei-pi qi by the mixture of shi-re evil”and“the mixture of shi-re”in vivo was quite dififcult to be explained in completely different context in the general situation; in the severe stage, the TCM clinical characteristics of syndrome differentiation might lose;in the early acute severe cases, the phenomenon that xin-yang and fei-qi almost ran out was dififcult to be observed, then, the line between the severe and the acute severe became vague. Conclusions The theory of syndrome differentiation by stages of HFMD was reasonable in the actual situation of clinical description on HFMD which was expected to be further tested and widely applied in the

  16. Using case studies in management education: the student perspective.

    OpenAIRE

    BRENNAN, ROSS; Ahmad, S. Jaseem

    2005-01-01

    Case studies are widely used in management education. Most of the literature discussing the case study method has reflected the perspective of the teacher, implying a teacher-centred view of the case study as a learning strategy. Little is known about the student perspective on case studies. If we are to use the case study method as a component of a student-centred learning experience, then we must know how students perceive case studies, and understand the differences in attitude...

  17. Where Does Literary Study Happen? Two Case Studies

    Science.gov (United States)

    Billington, Josie; Sperlinger, Tom

    2011-01-01

    This article explores the question of where literary study happens through reflection on two case studies. The article examines projects within two UK English departments, which were designed to allow students of literature to engage with local communities as part of their studies. The implications of this work are considered for curriculum…

  18. Dieulafoy's lesion: A case series study

    Institute of Scientific and Technical Information of China (English)

    RS Walmsley; Yuk-Tong Lee; Joseph JY Sung

    2005-01-01

    AIM: Dieulafoy's lesion (DL) accounts for 1-5.8% of cases of acute upper gastrointestinal bleeding (GIB). Its mortality is high, approaching 20%, despite recent advances in endoscopic therapy. We aimed to report our experience in the treatment of DL.METHODS: A retrospective case study of all patients with DL between January 1993 and January 2003 was done. Characteristics, treatment methods, success rates and 30-d mortality of the patients were analyzed. RESULTS: Thirty-six patients were noted to have DL in the study period. Thirty-three records were available for assessment in which 35 DL were identified. The median age of the patients was 67 years with male to female ratio of 5.6:1. Significant comorbidities existed in 69% of the patients. Eighty-nine percent of the DL was found at first endoscopy, three DL at laparotomy. Significant coexistent endoscopic findings existed in 23%. Hemostasis was achieved in 88% by using adrenaline injection, or in combination with heater probe application at first endoscopy. Four cases had re-bleeding, all were successfully treated endoscopically. The 30-d mortality rate was 23%.CONCLUSION: Successful endoscopic hemostasis could be achieved in 100% of cases of DL. The overall mortality may still remain high, mainly due to the comorbidities and age of these patients.

  19. Vitiligo: A study of 120 cases

    Directory of Open Access Journals (Sweden)

    Kar P

    2001-11-01

    Full Text Available Vitiligo is a common pignientary disorder and of major social and cosmetic concern in India. Purpose of the study was to find out age at onset and sex incidence in vitiligo, role of hereditary factors and associations with other diseases. 120 self reporting vitiligo patients attending out patient department of a service hospital were selected for the study and this data was analysed. In the present series out of 120 cases 62 (51.6% were males and 58(48.35%were females. There was practically no difference in sex incidence. The lowest age of onset was two years and the oldest was 65 years. In the majority of patients,52(43.2%, disease started before twenty years of age.8 (6.6% cases gave definite family history of vitiligo. Exposed areas of the body were commonly affected in majority (66.6% of cases. The legs were commonest site of involvement in 60(50% cases. Circunicript type of vitiligo (46.6% was heading the list. Majority of patients (56.6% had multiple lesions. Diabetes mellitus was found in 2 (2.6% patients. Cause of vitiligo is still idiopathic. Hereditary factors hardly play any role in manifestation of vitiligo

  20. Investigating the Link between self-citation and authors’ co-incidence with journal impact factors in Iran: Case study of Economic Journals indexed in Islamic Science Citation Database

    OpenAIRE

    Hashem Attapour; Muhammad Hassanzadeh; Abdulreza Norouzi Chakoli

    2010-01-01

      The present paper examines the links between self-citation and authors’ co-incidence with impact factors of economic journals indexed in ISC. It is essentially a scientometric research employing citation analysis and literature survey. Data was collected by querying ISC and leafing through the journals studied. Self-citation, authors’ co-incidence and impact factor of the journal studied formed the variables. Correlation analysis indicated that there is a significance between authors’ self-...

  1. Understanding juror perceptions of forensic evidence: investigating the impact of case context on perceptions of forensic evidence strength.

    Science.gov (United States)

    Smith, Lisa L; Bull, Ray; Holliday, Robyn

    2011-03-01

    The most widely accepted model of juror decision making acknowledges the importance of both the case-specific information presented in the courtroom, as well as the prior general knowledge and beliefs held by each juror. The studies presented in this paper investigated whether mock jurors could differentiate between evidence of varying strengths in the absence of case information and then followed on to determine the influence that case context (and therefore the story model) has on judgments made about the strength of forensic DNA evidence. The results illustrated that mock jurors correctly identified various strengths of evidence when it was not presented with case information; however, the perceived strength of evidence was significantly inflated when presented in the context of a criminal case, particularly when the evidence was of a weak or ambiguous standard. These findings are discussed in relation to the story model, and the potential implications for real juries.

  2. The role of forensic botany in crime scene investigation: case report and review of literature.

    Science.gov (United States)

    Aquila, Isabella; Ausania, Francesco; Di Nunzio, Ciro; Serra, Arianna; Boca, Silvia; Capelli, Arnaldo; Magni, Paola; Ricci, Pietrantonio

    2014-05-01

    Management of a crime is the process of ensuring accurate and effective collection and preservation of physical evidence. Forensic botany can provide significant supporting evidences during criminal investigations. The aim of this study is to demonstrate the importance of forensic botany in the crime scene. We reported a case of a woman affected by dementia who had disappeared from nursing care and was found dead near the banks of a river that flowed under a railroad. Two possible ways of access to crime scene were identified and denominated "Path A" and "Path B." Both types of soil and plants were identified. Botanical survey was performed. Some samples of Xanthium Orientalis subsp. Italicum were identified. The fall of woman resulted in external injuries and vertebral fracture at autopsy. The botanical evidence is important when crime scene and autopsy findings are not sufficient to define the dynamics and the modality of death. PMID:24502402

  3. SINGLE-CASE INVESTIGATION OF AN EMOTION-FOCUSED THERAPY GROUP FOR ANXIETY AND DEPRESSION

    Directory of Open Access Journals (Sweden)

    Adèle Lafrance Robinson

    2012-11-01

    Full Text Available Emotion-focused therapy (EFT is an evidence-based treatment for depression and trauma and has shown promise for other presentations including anxiety. Minimal research exists investigating the outcomes of emotion-focused therapy in a group setting. The current research presents a mixed-method single-case study of one client’s experiences and outcomes following a nine-week EFT group for depression and anxiety. Weekly measures of session-feelings evaluations were collected. Follow-up measures, including a qualitative interview, were administered one year post-treatment. Pre-, post-, and follow-up measures assessed depression, anxiety, and emotional regulation. Results showed clinically significant improvements in anxiety, depression, and emotional regulation over time. Indirect and direct evidence of client change were detected. Five super-ordinate themes with sub-themes emerged from the qualitative analysis.

  4. Investigation into a Layered Approach to Architecting Security-Informed Safety Cases

    OpenAIRE

    Netkachova, K.; Müller, K.; Paulitsch, M.; Bloomfield, R. E.

    2015-01-01

    The paper describes a layered approach to analysing safety and security in a structured way and creating a security-informed safety case. The approach is applied to a case study – a Security Gateway controlling data flow between two different security domains implemented with a separation kernel based operating system in an avionics environment. We discuss some findings from the case study, show how the approach identifies and ameliorates important interactions between safety and security and...

  5. Gas pockets in a wastewater rising main: a case study.

    Science.gov (United States)

    Pozos-Estrada, Oscar; Fuentes-Mariles, Oscar A; Pozos-Estrada, Adrian

    2012-01-01

    This paper presents a case study of an existing wastewater rising main (WWRM) in which an extreme transient event produced by simultaneous power failure of the pumps caused the rupture of a 1.2 m (48 in) prestressed concrete cylinder pipe (PCCP), causing an important leakage of sewage. The event and the methodology followed in order to validate the diagnostics of the failure are described. The detail study included in situ observation of the system, experimental investigation in a setup, hydraulic analysis, as well as details of the structural strength of the WWRM. After the extensive investigation and several simulations of fluid transients for different scenarios and flow conditions, it was found that stationary small gas pockets accumulated at high points of the WWRM were identified as the principal contributory factor of the failure. This case study serves as clear warning of the consequences of operating a WWRM with gas pockets at its high points. PMID:22949261

  6. Pilot case-control investigation of risk factors for hip fractures in the urban Indian population

    Directory of Open Access Journals (Sweden)

    Malhotra Nidhi

    2010-03-01

    Full Text Available Abstract Background Despite the reported high prevalence of osteoporosis in India, there have been no previous studies examining the risk factors for hip fracture in the Indian population. Methods We carried out a case control investigation comprising 100 case subjects (57 women and 43 men admitted with a first hip fracture into one of three hospitals across New Delhi. The 100 controls were age and sex matched subjects who were either healthy visitors not related to the case patients or hospital staff. Information from all subjects was obtained through a questionnaire based interview. Results There was a significant increase in the number of cases of hip fracture with increasing age. There were significantly more women (57% than men (43%. Univariate analysis identified protective effects for increased activity, exercise, calcium and vitamin supplements, almonds, fish, paneer (cottage cheese, curd (plain yogurt, and milk. However, tea and other caffeinated beverages were significant risk factors. In women, hormone/estrogen therapy appeared to have a marginal protective effect. For all cases, decreased agility, visual impairment, long term medications, chronic illnesses increased the risk of hip fracture. The multivariate analysis confirmed a protective effect of increased activity and also showed a decrease in hip fracture risk with increasing body mass index (odds ratio (OR 0.024, 95% confidence interval (CI 0.006-0.10 & OR 0.81, 95% CI 0.68-0.97 respectively. Individuals who take calcium supplements have a decreased risk of hip fracture (OR 0.076; CI 0.017-0.340, as do individuals who eat fish (OR 0.094; CI 0.020-0.431, and those who eat paneer (OR 0.152; 0.031-0.741. Tea drinkers have a higher risk of hip fracture (OR 22.8; 95% CI 3.73-139.43. Difficulty in getting up from a chair also appears to be an important risk factor for hip fractures (OR 14.53; 95% CI 3.86-54.23. Conclusions In the urban Indian population, dietary calcium, vitamin D

  7. The Pendulum A Case Study in Physics

    CERN Document Server

    Baker, Gregory L

    2005-01-01

    The pendulum: a case study in physics is a unique book in several ways. Firstly, it is a comprehensive quantitative study of one physical system, the pendulum, from the viewpoint of elementary and more advanced classical physics, modern chaotic dynamics, and quantum mechanics. In addition, coupled pendulums and pendulum analogs of superconducting devices are also discussed. Secondly, this book treats the physics of the pendulum within a historical and cultural context,showing, for example, that the pendulum has been intimately connected with studies of the earth's density, the earth's motion,

  8. CONSERVATION OF POLYCHROME WOOD - PRINCIPLES AND CASE STUDY

    Directory of Open Access Journals (Sweden)

    Larisa-Loredana BABIŢA

    2015-12-01

    Full Text Available Polychrome wood artefacts represent a significantly valuable component of world cultural heritege, requiring thorough scientific investigation and specific conservation-restoration treatments. These are illustrated in this paper by the case study of an artisanal hanger, originating from Szecklerland, Romania. The study is focused on the analysis of initial conservation state and indentification of the constituent materials and techniques, employing non invasive and microdestructive scientific investigation methods, such as: photographic techniques, radiography, and microscopy of cros-sections through the painting layer. The conservation-restoration process of the hanger consisted in a series of treatments meant to preserve its authenticity, while highlighting its original beauty.

  9. An Empirical Investigation into the Role of Enjoyment, Computer Anxiety, Computer Self-Efficacy and Internet Experience in Influencing the Students' Intention to Use E-Learning: A Case Study from Saudi Arabian Governmental Universities

    Science.gov (United States)

    Alenezi, Abdulhameed Rakan; Abdul Karim, Abdul Malek; Veloo, Arsaythamby

    2010-01-01

    E-learning as an effective educational tool has been integrated into many offered courses provided by higher education institutions. Throughout eliminating the barriers of time and distance, students' lifelong learning can be achieved. Due to a broad global attention given to e-Learning, various studies had been conducted by academe, different…

  10. The Malevolence of Technology: An Investigation into the Various Socio-Economic Impacts of Excessive Cell Phone Use among University Students (A Case Study of University of Malakand, KPK Pakistan

    Directory of Open Access Journals (Sweden)

    Arab Naz

    2011-10-01

    Full Text Available Technological malevolence is among the loosely debated issues in the current scenario of modernity. Most of the studies emphasize over its lucrative aspect where the current study violates the traditional paradigm because of illuminating the darken face of technological advancement. The current study is an attempt to explore that the communicational technology in shape of cell phone (abuse is one of the hazardous move in the course of development that brings jeopardy to social cohesion, adjustment, integrity and personality development of the vulnerable and subject students. The current study was conducted in University of Malakand, which is a public sector university in Chakdara town, district Dir (lower, Khyber Pakhtunkhwa province of Pakistan. Data was collected from 100 students (both male and female who were the excessive cell phone users through simple random sampling technique using structured interview schedule as a tool of data collection. The empirical data has been analyzed through the application of Chi-square test and Gamma analysis while processed in the form of tables and bar charts where a qualitative discussion has penned-down on the basis of findings and results. The results show that the excessive use of cell phone has multivariate impacts upon the students.

  11. Management & Communication: Project Management Case Study

    CERN Multimedia

    Nathalie Dumeaux

    2004-01-01

    We are pleased to announce the recent launch of a new workshop on Project Management. This is designed for People with budgetary, scheduling and/or organizational responsibilities in a project or a sub-project. The objectives through a management case study specially suited to CERN are: to become familiar with modern management techniques in use for structuring, planning, scheduling, costing and progress monitoring of a project or a sub-project. to understand in-depth issues associated with Deliverable-oriented Project Management, Earned Value Management, Advanced Project Cost Engineering and Project Risk Management. The full description of this workshop can be found here. The next session will be held on 8 October 2004. If you are interested in this workshop, please contact Nathalie Dumeaux, email or 78144. Programme of Seminars October to December 2004 Situation : 21.09.2004 Séminaires bilingues Dates Jours Places disponibles Project Management Case study 8 October 1 oui Intr...

  12. Marketing and clinical trials: a case study

    Directory of Open Access Journals (Sweden)

    Entwistle Vikki A

    2007-11-01

    Full Text Available Abstract Background Publicly funded clinical trials require a substantial commitment of time and money. To ensure that sufficient numbers of patients are recruited it is essential that they address important questions in a rigorous manner and are managed well, adopting effective marketing strategies. Methods Using methods of analysis drawn from management studies, this paper presents a structured assessment framework or reference model, derived from a case analysis of the MRC's CRASH trial, of 12 factors that may affect the success of the marketing and sales activities associated with clinical trials. Results The case study demonstrates that trials need various categories of people to buy in – hence, to be successful, trialists must embrace marketing strategies to some extent. Conclusion The performance of future clinical trials could be enhanced if trialists routinely considered these factors.

  13. The Graduate Experience: Living and Studying Abroad (A Case Study

    Directory of Open Access Journals (Sweden)

    Rosario Hernández Castañeda

    2008-11-01

    Full Text Available This article is a qualitative case study describing the experience of Angélica an international graduate student from Latin America, who received her doctorate at the University of New Mexico in the United States. Her case demonstrated how administrators and faculty learn about the experience and struggles endured by international students, especially those who learned English a short time before admission to graduate studies. While a single case is understandably idiographic in nature and inevitably requires a larger sample, from the analysis of Angélica’s case and the analysis of the relevant literature common topics emerged persuading me to conclude that the issues that commonly impact the life of international students have to do with: 1 second language problems; 2 the quality of academic advisement received; 3 the availability of financial support; 4 the level of integration into their academic program; and 5 the level of cultural adjustment in their host country.

  14. Case Study on Inventory Management Improvement

    OpenAIRE

    Plinere Darya; Borisov Arkady

    2015-01-01

    Inventory management is a challenging problem area in supply chain management. Companies need to have inventories in warehouses in order to fulfil customer demand, meanwhile these inventories have holding costs and this is frozen fund that can be lost. Therefore, the task of inventory management is to find the quantity of inventories that will fulfil the demand, avoiding overstocks. This paper presents a case study for the assembling company on inventory management. It is proposed to use inve...

  15. BOOK REVIEW: Case Studies in Knowledge Management

    OpenAIRE

    BOYACI, Reviewed By Dr. Adnan

    2005-01-01

    161Case Studies in Knowledge ManagementEdited by Murray JennexHersley: PA: Idea Group, 2005, pp. 372, ISBN 1-59140-352-9Reviewed by Dr. Adnan BOYACIAnadolu UniversityEskişehir-TurkeyKnowledge management (KM) as a structured system and the way to the effectiveness isrelatively new field for the contemporary organizations functioning in different andcompetitive domain of public and private sectors in terms of getting optimal effectivenessunderlined by the concepts such as quality, productivity…...

  16. A Codesign Case Study in Computer Graphics

    OpenAIRE

    Brage, Jens P.; Madsen, Jan

    1994-01-01

    The paper describes a codesign case study where a computer graphics application is examined with the intention to speed up its execution. The application is specified as a C program, and is characterized by the lack of a simple compute-intensive kernel. The hardware/software partitioning is based on information obtained from software profiling and the resulting design is validated through cosimulation. A locally developed interface model, Merlin, is used as the basis for co-simulation. The ac...

  17. Six case studies of contents tourism

    OpenAIRE

    Seaton, Philip

    2015-01-01

    This short series of research notes brings together some of the case studies that have been researched by members of the project ‘International Comparative Research on the Spreading and Reception of Culture through Contents Tourism’. This research has been funded since April 2014 by a Japan Society for the Promotion of Science grant (Kiban A, grant number 26243007). However, the project had its roots in a small group research project started in the Research Faculty of Media and...

  18. Case Study for Holylight(HK)

    OpenAIRE

    Ha, Kong Ho

    2013-01-01

    In this thesis the case company – Holylight (HK) was thoroughly studied. The company structure, business strategic management and Marketing mix (4ps) were analyzed using SWOT analysis. It was found that Holylight (HK) had huge poten-tial in the business its stable supplies from the United States of America, Europe and Australia; Alliance partnership company ensure the steady sales channel in potential market – China that further development and expansion are highly feasible. However th...

  19. Telepractice for Pediatric Dysphagia: A Case Study

    OpenAIRE

    Malandraki, Georgia A.; Melissa Roth; Justine Joan Sheppard

    2014-01-01

    A closed-ended intensive pediatric swallowing telepractice program was developed and piloted in one pediatric patient with Opitz BBB/G and Asperger’s Syndromes, oropharyngeal dysphagia and aerophagia. The present study is a case report. Outcome variables included behavioral, swallowing and quality of life variables, and were assessed at baseline and at the end of the four-week program. Selective variables were also assessed at a follow-up family interview four weeks post program completion. O...

  20. Hawaii Macadamia Nut Company- A Case Study

    OpenAIRE

    George H. (Jody) Tompson; Dan Verreault; Tompson, Holly B.

    2009-01-01

    Owners of the Hawaii Macadamia Nut Company (HMNC) are facing an expansion opportunity. A land owner has preperty available that would enable the HMNC to expand its acreage and revenue by about 20%. To fully consider this opportunity the owners must decide 1)whether the expansion is strategically and financially viable, 2)how to raise capital to finance the expansion, and 3)whether they have the skills to manage the company's growth during expansion. This is a case study describing a real comp...