WorldWideScience

Sample records for expert panel analysis

  1. Expert panel vs decision-analysis recommendations for postdischarge coronary angiography after myocardial infarction.

    Science.gov (United States)

    Kuntz, K M; Tsevat, J; Weinstein, M C; Goldman, L

    1999-12-15

    Expert panels and decision-analytic techniques are increasingly used to determine the appropriateness of medical interventions, but these 2 approaches use different methods to process evidence. To compare expert panel appropriateness ratings of coronary angiography after myocardial infarction (from the time of hospital discharge to 12 weeks after infarction) with the health gains and cost-effectiveness predicted by a decision-analytic model. Comparison of the degree of importance of the clinical variables considered in expert panel appropriateness ratings vs a previously published decision-analytic model. Identification of 36 clinical scenarios from the expert panel that could be simulated by the decision-analytic model. Appropriateness score and appropriateness classification (expert panel) vs gain in quality-adjusted life-years (QALYs) and incremental cost-effectiveness ratio (decision-analytic model). The most important clinical variables were similar in the 2 approaches, with the exercise tolerance test result exerting the greatest leverage on strength of recommendation for angiography. Among the expert panel clinical scenarios considered to be appropriate for coronary angiography that could be simulated in the decision-analysis model, the median (interquartile range) health gain and incremental cost-effectiveness ratio were 0.59 (0.41-0.76) QALYs and $27000 ($23000-$35000) per QALY gained, respectively. Among the clinical scenarios that expert panels considered inappropriate, the corresponding medians (interquartile ranges) were 0.24 (0.19-0.34) QALYs and $54000 ($36000-$58000) per QALY gained. The Spearman rank correlation between appropriateness score and QALY gain was 0.58 (Pappropriateness score and estimated incremental cost-effectiveness ratios was -0.66 (Pappropriateness score and both the health gain and the incremental cost-effectiveness ratio of coronary angiography compared with no angiography in the convalescent phase of acute myocardial infarction

  2. Strategic Choice Analysis by Expert Panels for Migration Impact Assessment

    NARCIS (Netherlands)

    Kourtit, K.; Nijkamp, P.

    2011-01-01

    International migration is a source of policy and research interest in many countries. This paper provides a review of experiences and findings from migration impact assessment worldwide. Various findings are briefly summarised in the context of a systematic migration SWOT analysis for five distinct

  3. The panel of experts

    OpenAIRE

    2014-01-01

    CHAIRMAN Ousmane Sy, Minister of territorial administration and local institutions (Republic of Mali) SCIENTIFIC COORDINATORS Jérôme Marie (Paris 10 University) Pierre Morand (IRD) Hamady N’Djim (Consulting engineer) MEMBERS Jean-François Bélières (Cirad) Cheik Cissé (Consulting legal expert) Lassine Diarra (IER-CRRA) Almoustapha Fofana (DNH) Pierrick Givone (Cemagref) Housseini Maïga (DNH) Mamadou Kabirou N’Diaye (IER) Didier Orange (IRD) Pierre Sibiri Traoré (Icrisat/IER)

  4. Analysis of core damage frequency from internal events: Expert judgment elicitation. Part 1: Expert panel results. Part 2: Project staff results

    International Nuclear Information System (INIS)

    Wheeler, T.A.; Cramond, W.R.; Hora, S.C.; Unwin, S.D.

    1989-04-01

    Quantitative modeling techniques have limitations as to the resolution of important issues in probabilistic risk assessment (PRA). Not all issues can be resolved via the existing set of methods such as fault trees, event trees, statistical analyses, data collection, and computer simulation. Therefore, an expert judgment process was developed to address issues perceived as important to risk in the NUREG-1150 analysis but which could not be resolved with existing techniques. This process was applied to several issues that could significantly affect the internal event core damage frequencies of the PRAs performed on six light water reactors. Detailed descriptions of these issues and the results of the expert judgment elicitation are reported here, as well as an explanation of the methodology used and the procedure followed in performing the overall elicitation task. The process is time-consuming and expensive. However, the results are very useful, and represent an improvement over the draft NUREG-1150 analysis in the areas of expert selection, elicitation training, issue selection and presentation, elicitation of judgment and aggregation of results. The results are presented in two parts. Part documents the expert panel elicitations, where the most important issues were presented to a panel of experts convened from throughout the nuclear power risk assessment community. Part 2 documents the process by which the project staff performed expert judgment on other important issues, using the project staff as panel members. (author)

  5. Developing a HACCP-like system for improving animal health and welfare in organic egg production - based on an expert panel analysis

    DEFF Research Database (Denmark)

    Hegelund, Lene; Sørensen, Jan Tind

    2007-01-01

    In the process of developing a generic Hazard Analysis and Critical Control Point (HACCP)-like system for securing animal health and welfare in organic egg production, an expert panel analysis was used to perform the initial hazard analysis. Eighteen advisers and researchers in organic egg...... production were included in the expert panel. In a series of four questionnaires, the expert panel first scored 34 health and welfare problems seen in Danish organic egg production. Based on scorings of severity and occurrence, 10 problems were selected for further analysis. The experts subsequently...... specific systems. An expert panel analysis based on questionnaires was a useful tool during the first steps of developing a HACCP plan, conducting a hazard analysis and suggesting control points. However, care should be taken regarding the panel's size and fields of expertise in order to assure...

  6. Multi-criteria decision analysis for health technology assessment in Canada: insights from an expert panel discussion.

    Science.gov (United States)

    Diaby, Vakaramoko; Goeree, Ron; Hoch, Jeffrey; Siebert, Uwe

    2015-02-01

    Multi-criteria decision analysis (MCDA), a decision-making tool, has received increasing attention in recent years, notably in the healthcare field. For Canada, it is unclear whether and how MCDA should be incorporated into the existing health technology assessment (HTA) decision-making process. To facilitate debate on improving HTA decision-making in Canada, a workshop was held in conjunction with the 8th World Congress on Health Economics of the International Health Economics Association in Toronto, Canada in July 2011. The objective of the workshop was to discuss the potential benefits and challenges related to the use of MCDA for HTA decision-making in Canada. This paper summarizes and discusses the recommendations of an expert panel convened at the workshop to discuss opportunities and concerns with reference to the implementation of MCDA in Canada.

  7. Developing a HACCP-like system for improving animal health and welfare in organic egg production - based on an expert panel analysis.

    Science.gov (United States)

    Hegelund, L; Sørensen, J T

    2007-08-01

    In the process of developing a generic Hazard Analysis and Critical Control Point (HACCP)-like system for securing animal health and welfare in organic egg production, an expert panel analysis was used to perform the initial hazard analysis. Eighteen advisers and researchers in organic egg production were included in the expert panel. In a series of four questionnaires, the expert panel first scored 34 health and welfare problems seen in Danish organic egg production. Based on scorings of severity and occurrence, 10 problems were selected for further analysis. The experts subsequently suggested and scored risk factors for those problems and finally suggested control points, alarm values indicating the need for corrective actions in order to control the risk factors and monitoring frequencies of these. The 10 selected problems were hunger, thirst, piling, crop impaction, blackhead, pasteurellosis, bone fractures, cannibalism, predators and red mites. A total of 154 different risk factors were suggested for these problems. The 41 risk factors which rated highest in a combined scoring of importance and occurrence were selected for further analysis. There was a high degree of consensus between experts when scoring both problems and risk factors. The level of consensus, as defined by an interquartile range 1, was 79% to 100% when scoring the health and welfare problems (scale 1-5) and 77% to 95% when scoring the risk factors (scale 1-4). On average, 5.8 control points were suggested for every risk factor. Alarm values were often not detailed enough to be of practical significance and further analysis is needed in order to define these. The experts were highly diverse in their suggested monitoring frequencies and establishment of monitoring schemes should be part of developing the farm specific systems. An expert panel analysis based on questionnaires was a useful tool during the first steps of developing a HACCP plan, conducting a hazard analysis and suggesting control

  8. Road Safety Data, Collection, Transfer and Analysis DaCoTa. Workpackage 4, Decision Support: Deliverable 4.1: Consultation of a panel of experts on the needs for data and technical tools in road safety policy-making.

    NARCIS (Netherlands)

    Dupont, E. Martensen, H. Papadimitriou, E. Yannis, G. Muhlrad, N. Jähi, H. Vallet, G. Giustiniani, G. Tripodi, A. Usami, D. Bax, C. Wijnen, W. Schöne, M.-L. Machata, K. Buttle, I. Zysinska, M. Talbot, R. Gitelman, V. & Hakkert, S.

    2015-01-01

    In a co-production of DaCoTA WP1 and DaCoTA WP4, an Experts Panel was created and a consultation was launched for the preliminary assessment of knowledge, data and analysis needs within road safety management. The objective of the consultation of this Experts Panel was the assessment of current

  9. Panel Analysis

    DEFF Research Database (Denmark)

    Brænder, Morten; Andersen, Lotte Bøgh

    2014-01-01

    where panel attrition, the practical and ethical challenges of contacting the same respondents at different points of time may affect response rates negatively. In the article, we present some key distinctions regarding panel data and analyses, and in the subsequent exercises we invite readers to apply...... these concepts on a number of recently published panel studies....

  10. Osteoporosis in Latin America: panel expert review

    Directory of Open Access Journals (Sweden)

    Patricia Clark

    2013-09-01

    Full Text Available Background. The Latin American region is undergoing a demographic and epidemiological transition, which is leading to an increase in chronic and degenerative diseases. Osteoporosis (OP and fragility fractures (FF are emerging as main causes of disease burden with great impact on health institutions. Purpose. This review article provides an updated overview of trends in the epidemiology and economic impact of OP and FF, as well as in diagnosis and available treatments in Latin America, including calcium, vitamin D and prevention programs. Methods. Expert panel. Conclusions. According to this review, there is a lack of epidemiological and economic information in the region. It is desirable to obtain information regarding quality of life in OP and FF as well as to highlight prevention as a tool to reduce FF.

  11. [ANALYSIS USING AN EXPERT PANEL OF ACTIVITIES AND COMPETENCIES WHICH NURSING CLINICAL PRACTICE TUTORS IN THE COMUNIDAD AUTÓNOMA DE MADRID SHOULD POSSESS].

    Science.gov (United States)

    Argüello López, María Teresa; Palmar Santos, Ana María; Sellán Soto, Carmen

    2015-01-01

    Although practical training has always been important in Nursing, it has reached a new dimension in the European Higher Education Area. This has involved adapting the syllabus, where one of the new features is considering clinical practice as an independent subject and also including the concept of competence as a result of the students' learning. The figure of the tutor becomes one of the key factors and therefore their activities and competencies must be defined. To enumerate and prioritize, by agreement, the main activities and competences by the tutor of clinical practices in the Comunidad Autónoma de Madrid should posses. METHODOLOGY. Quantitative focus, analysis by group of experts between 2010 and 2013. RESULTS. A total of 510 nurses have participated, 17 panels of experts have met and consensus has been reached on 22 competencies and 12 activities. The description of activities and competencies can be extremely useful for selecting, evaluating and developing nursing clinical practice tutors, becoming a baseline and reducing the subjectivity in the development of tutors according to the new demands of the European Higher Education Area.

  12. Expert Panel Elicitation of Seismicity Following Glaciation in Sweden

    International Nuclear Information System (INIS)

    Hora, Stephen; Jensen, Mikael

    2005-12-01

    The Swedish Radiation Protection Authority, the Swedish Nuclear Power Inspectorate and the Swedish Nuclear Fuel and Waste Management Company have jointly carried out a project on expert panel elicitation on the issue of glacial induced Swedish earthquakes. Following a broad nomination procedure, 5 experts were chosen by a selection committee of 4 professors within Earth sciences disciplines. The 5 experts presented judgments about the frequency of earthquakes greater the magnitude 6 within 10 km for two Swedish sites, Oskarshamn and Forsmark, in connection with a glaciation cycle. The experts' median value vas 0,1 earthquakes for one glaciation cycle

  13. Expert Panel Elicitation of Seismicity Following Glaciation in Sweden

    Energy Technology Data Exchange (ETDEWEB)

    Hora, Stephen; Jensen, Mikael (eds.)

    2005-12-15

    The Swedish Radiation Protection Authority, the Swedish Nuclear Power Inspectorate and the Swedish Nuclear Fuel and Waste Management Company have jointly carried out a project on expert panel elicitation on the issue of glacial induced Swedish earthquakes. Following a broad nomination procedure, 5 experts were chosen by a selection committee of 4 professors within Earth sciences disciplines. The 5 experts presented judgments about the frequency of earthquakes greater the magnitude 6 within 10 km for two Swedish sites, Oskarshamn and Forsmark, in connection with a glaciation cycle. The experts' median value vas 0,1 earthquakes for one glaciation cycle.

  14. TWRS vadose zone contamination issue expert panel report

    Energy Technology Data Exchange (ETDEWEB)

    Shafer, D.S.

    1997-05-01

    When members were first canvassed for participation in the Vadose Zone Expert Panel the stated purpose for convening the Panel was to review a controversial draft report, the SX Tank Farm Report. This report was produced by a DOE Grand Junction Project Office (GJPO) contractor, RUST Geotech, now MACTEC-ERS, for the DOE Richland Office (DOERL). Three meetings were planned for June, July and August, 1995 to review the draft report and to complete a Panel report by mid-September. The Expert Panel has found its efforts confounded by various non-technical issues. The Expert Panel has chosen to address some of the non-technical issues in this Preface rather than to dilute the technical discussion that follows in the body of this independent expert panel status report (Panel Report). Rather than performing a straightforward manuscript review, the Panel was asked to resolve conflicting interpretations of gamma-ray logging measurements performed in vadose zone boreholes (drywells) surrounding the high-level radioactive wastes of the SX tank farm. There are numerous and complex technical issues that must be evaluated before the vertical and radial extent of contaminant migration at the SX tank farm can be accurately assessed. When the Panel first met in early June, 1996, it quickly became apparent that the scientific and technical issues were obscured by policy and institutional affairs which have polarized discussion among various segments of the Hanford organization. This situation reflects the kinds of institutional problems described separately in reports by the National Research Council of the National Academy of Sciences (NAS/NRC), The Hanford Tanks Environmental Impacts and Policy Choices and BmTiers to Science: Technical Management of the Department of Energy Environmental Remediation Program. The Vadose Zone Characterization Program, appears to be caught between conflicting pressures and organizational mandates, some imposed from outside DOE-RL and some self

  15. 21 CFR 516.141 - Qualified expert panels.

    Science.gov (United States)

    2010-04-01

    ... competitive advantage for a person or organization. (2) Factors relevant to whether there is a conflict of.... (2) Act in accordance with generally accepted professional and ethical business practices. (3) Review... ethical business practices. (2) The qualified expert panel leader serves as the principal point of contact...

  16. Environmental factors and puberty timing: expert panel research needs

    DEFF Research Database (Denmark)

    Louis, G.M. Buck; Jr, L.E. Gray; Marcus, M.

    2008-01-01

    Serono Symposia International convened an expert panel to review the impact of environmental influences on the regulation of pubertal onset and progression while identifying critical data gaps and future research priorities. An expert panel reviewed the literature on endocrine-disrupting chemicals......, body size, and puberty. The panel concluded that available experimental animal and human data support a possible role of endocrine-disrupting chemicals and body size in relation to alterations in pubertal onset and progression in boys and girls. Critical data gaps prioritized for future research...... the continuum of exposures at critical windows while assessing a spectrum of pubertal markers as outcomes. Coupled with comparative species studies, such research may provide insight regarding the causal ordering of events that underlie pubertal onset and progression and their role in the pathway of adult...

  17. Teaching statistics to nursing students: an expert panel consensus.

    Science.gov (United States)

    Hayat, Matthew J; Eckardt, Patricia; Higgins, Melinda; Kim, MyoungJin; Schmiege, Sarah J

    2013-06-01

    Statistics education is a necessary element of nursing education, and its inclusion is recommended in the American Association of Colleges of Nursing guidelines for nurse training at all levels. This article presents a cohesive summary of an expert panel discussion, "Teaching Statistics to Nursing Students," held at the 2012 Joint Statistical Meetings. All panelists were statistics experts, had extensive teaching and consulting experience, and held faculty appointments in a U.S.-based nursing college or school. The panel discussed degree-specific curriculum requirements, course content, how to ensure nursing students understand the relevance of statistics, approaches to integrating statistics consulting knowledge, experience with classroom instruction, use of knowledge from the statistics education research field to make improvements in statistics education for nursing students, and classroom pedagogy and instruction on the use of statistical software. Panelists also discussed the need for evidence to make data-informed decisions about statistics education and training for nurses. Copyright 2013, SLACK Incorporated.

  18. Qualitative study of college tutoring through the expert panel method

    Directory of Open Access Journals (Sweden)

    Inmaculada López Martín

    2014-03-01

    Full Text Available The implementation of a quality Tutorial Action Plan (TAP, in which the integral formation of students is the main objective, is a topical issue in the Spanish university environment . This paper aims to identify the actions contemplated in the TAPs of different Spanish universities and catalog the different types of activities performed by the teachers-tutors in the context of tutorial action. To achieve this, the authors conducted a qualitative analysis based on expert panels. As a result, three main vectors were extracted: Standard elements in a college TAP, critical aspects from tutors and managers of tutorial actions, and tutorial actions with a seal of quality. From the analysis it was concluded that quality tutorial action is the basis for academic excellence. Its achievement requires to clarify and recognize the role of the tutor, adjust appropriately the ratio of students allocated per tutor, and promote the development of transversal skills in students. For this, the authors propose a cross-coordination among teachers, as well as counseling and support; tutor training and professionalism; and the application of working methods that allow proper guidance and monitoring of students. ----------------------------- Estudio Cualitativo sobre Tutoría Universitaria a Través del Método de Panel de Expertos Resumen La implantación de un plan de acción tutorial (PAT de calidad, en el cual la formación integral del alumnado sea lo principal, es un tema de actualidad en el entorno universitario español. El presente trabajo persigue identificar las acciones contempladas en los PAT de diferentes universidades españolas, así como catalogar los diferentes tipos de actividades realizadas por los profesores-tutores en el contexto de la acción tutorial. Para ello se realizó un análisis cualitativo basado en paneles de expertos. Como resultado, se extrajeron tres vectores principales: Elementos habituales en un PAT universitario; Aspectos cr

  19. Application of Delphi expert panel in joint venture projects

    Science.gov (United States)

    Adnan, H.; Rosman, M. R.; Rashid, Z. Z. Ahmad; Mohamad Yusuwan, N.; Bakhary, N. A.

    2018-02-01

    This study was conducted with the aim to identify the application of the Delphi Technique in validating findings obtained from questionnaire surveys and interviews done in- depth on the subject of joint venture projects in Malaysia. The Delphi technique aims to achieve a consensus of opinion amongst expert panellist that were selected on the primary factors in JV projects. To achieve research objectives, a progressive series of questions was designed where a selected panel of expert to confirm and validate the final findings. The rationale, benefits, limitations and recommendations for the use of Delphi were given in this study. From the literature review done, twenty-one factors were identified as critical factors to the making any joint venture project successful. Detail information from contractors were obtained by using the questionnaire survey method and forty-three in-depth interviews were carried out. Trust between partners, mutual understanding, partner selection criteria, agreement of contract, objective compatibility, conflict, and commitment were confirmed by the Delphi panel to be the critical success factors besides another fourteen factors which were found to be the Failure Reduction Criteria. Delphi techniques has proven to successfully assist in recognising the main factors and would be beneficial in supplementing the success of joint venture arrangements application for construction projects in Malaysia.

  20. Expert panel on hydrogeology; report to AECL Research (1992)

    International Nuclear Information System (INIS)

    Domenico, P.A.; Grisak, G.E.; Schwartz, F.W.

    1995-02-01

    In 1992 AECL Research convened a panel of external hydrogeological experts consisting of P.A. Domenico, G.E. Grisak, and F.W. Schwartz, to review AECL's proposed approach to siting a geological repository in the rocks of the Canadian Shield for the safe disposal of Canada's nuclear fuel wastes. In particular the panel was asked to provide its opinion on 1) the soundness of the technical approach developed to characterize the groundwater flow systems for the purpose of selecting a location for a disposal vault, 2) the validity and effectiveness of the geological case study used to demonstrate the performance assessment methodology based on the hydrogeological conditions observed at the Whiteshell Research Area, and 3) the adequacy of the hydrogeological information that AECL proposes to use in its Environmental Impact Statement (EIS) of the disposal concept. This report presents the findings, conclusions and recommendations of the hydrogeology review panel. The report was submitted to AECL Research in 1992 December. (author). 24 refs., 2 tabs., 4 figs

  1. A qualitative risk assessment methodology for scientific expert panels.

    Science.gov (United States)

    Dufour, B; Plée, L; Moutou, F; Boisseleau, D; Chartier, C; Durand, B; Ganière, J P; Guillotin, J; Lancelot, R; Saegerman, C; Thébault, A; Hattenberger, A M; Toma, B

    2011-12-01

    Risk assessment can be either quantitative, i.e. providing a numeric estimate of the probability of risk and the magnitude of the consequences, or qualitative, using a descriptive approach. The French Agency for Food, Environmental and Occupational Health and Safety (ANSES), formerly the French Food Safety Agency (AFSSA), bases its assessments on the opinions of scientific panels, such as the ANSES Animal Health Scientific Panel (AH-SP). Owing to the lack of relevant data and the very short period of time usually allowed to assess animal health risks on particular topics, this panel has been using a qualitative risk method for evaluating animal health risks or crises for the past few years. Some experts have drawn attention to the limitations of this method, such as the need to extend the range of adjectives used for the lower probabilities and to develop a way to assess consequences. The aim of this paper is to describe the improved method now established by the AH-SP, taking into account the limitations of the first version. The authors describe a new set of levels for probabilities, as well as the items considered when addressing either animal or human health consequences.

  2. Cough in the Athlete: CHEST Guideline and Expert Panel Report.

    Science.gov (United States)

    Boulet, Louis-Philippe; Turmel, Julie; Irwin, Richard S

    2017-02-01

    Cough is a common symptom experienced by athletes, particularly after exercise. We performed a systematic review to assess the following in this population: (1) the main causes of acute and recurrent cough, either exercise-induced or not, (2) how cough is assessed, and (3) how cough is treated in this population. From the systematic review, suggestions for management were developed. This review was performed according to the CHEST methodological guidelines and Grading of Recommendations Assessment, Development and Evaluation framework until April 2015. To be included, studies had to meet the following criteria: participants had to be athletes and adults and adolescents aged ≥ 12 years and had to complain of cough, regardless of its duration or relationship to exercise. The Expert Cough Panel based their suggestions on the data extracted from the review and final grading by consensus according to a Delphi process. Only 60 reports fulfilled the inclusion criteria, and the results of our analysis revealed only low-quality evidence on the causes of cough and how to assess and treat cough specifically in athletes. Although there was no formal evaluation of causes of cough in the athletic population, the most common causes reported were asthma, exercise-induced bronchoconstriction, respiratory tract infection (RTI), upper airway cough syndrome (UACS) (mostly from rhinitis), and environmental exposures. Cough was also reported to be related to exercise-induced vocal cord dysfunction among a variety of less common causes. Although gastroesophageal reflux disease (GERD) is frequent in athletes, we found no publication on cough and GERD in this population. Assessment of the causes of cough was performed mainly with bronchoprovocation tests and suspected disease-specific investigations. The evidence to guide treatment of cough in the athlete was weak or nonexistent, depending on the cause. As data on cough in athletes were hidden in a set of other data (respiratory

  3. Expert panel on additional cross subsidisation. Considering arguments and providing expert opinion

    International Nuclear Information System (INIS)

    Faber, J.; Nelissen, D.; Lowe, S.; Mason, A.

    2007-10-01

    market share on markets where they compete directly with EU based airlines by undercutting fares on these markets, subsidising potential losses on these markets by increased prices on routes at which they do not compete with EU airlines, and thus increase their total profits. As part of the project, a panel of experts will be contacted to provide input to the study. This note elaborates the input that we ask for. But first, it provides an analytical background on the study

  4. Panel data analysis using EViews

    CERN Document Server

    Agung, I Gusti Ngurah

    2013-01-01

    A comprehensive and accessible guide to panel data analysis using EViews software This book explores the use of EViews software in creating panel data analysis using appropriate empirical models and real datasets. Guidance is given on developing alternative descriptive statistical summaries for evaluation and providing policy analysis based on pool panel data. Various alternative models based on panel data are explored, including univariate general linear models, fixed effect models and causal models, and guidance on the advantages and disadvantages of each one is given. Panel Data Analysis

  5. Expert consensus panel guidelines on geriatric assessment in oncology.

    Science.gov (United States)

    O'Donovan, A; Mohile, S G; Leech, M

    2015-07-01

    Despite consensus guidelines on best practice in the care of older patients with cancer, geriatric assessment (GA) has yet to be optimally integrated into the field of oncology in most countries. There is a relative lack of consensus in the published literature as to the best approach to take, and there is a degree of uncertainty as to how integration of geriatric medicine principles might optimally predict patient outcomes. The aim of the current study was to obtain consensus on GA in oncology to inform the implementation of a geriatric oncology programme. A four-round Delphi process was employed. The Delphi method is a structured group facilitation process, using multiple iterations to gain consensus on a given topic. Consensus was reached on the optimal assessment method and interventions required for the commonly employed domains of GA. Other aspects of GA, such as screening methods and age cut-off for assessment, represented a higher degree of disagreement. The expert panel employed in this study clearly identified the criteria that should be included in a clinical geriatric oncology programme. In the absence of evidence-based guidelines, this may prove useful in the care of older cancer patients. © 2015 John Wiley & Sons Ltd.

  6. A quick and selected overview of the expert panel on effective ways of investing in health.

    Science.gov (United States)

    Barros, Pedro Pita

    2017-01-01

    The European Commission created the Expert Panel on Effective Ways of Investing in Health (EXPH) in 2012. The EXPH started its activities in July 2013 and ended its first term in May 2016. A personal review of the Expert Panel contributions in its first term is provided.

  7. Comprehensive embryo testing. Experts' opinions regarding future directions: an expert panel study on comprehensive embryo testing.

    Science.gov (United States)

    Hens, Kristien; Dondorp, Wybo J; Geraedts, Joep P M; de Wert, Guido M

    2013-05-01

    What do scientists in the field of preimplantation genetic diagnosis (PGD) and preimplantation genetic screening (PGS) consider to be the future direction of comprehensive embryo testing? Although there are many biological and technical limitations, as well as uncertainties regarding the meaning of genetic variation, comprehensive embryo testing will impact the IVF/PGD practice and a timely ethical reflection is needed. Comprehensive testing using microarrays is currently being introduced in the context of PGD and PGS, and it is to be expected that whole-genome sequencing will also follow. Current ethical and empirical sociological research on embryo testing focuses on PGD as it is practiced now. However, empirical research and systematic reflection regarding the impact of comprehensive techniques for embryo testing is missing. In order to understand the potential of this technology and to be able to adequately foresee its implications, we held an expert panel with seven pioneers in PGD. We conducted an expert panel in October 2011 with seven PGD pioneers from Belgium, The Netherlands, Germany and the UK. Participants expected the use of comprehensive techniques in the context of PGD. However, the introduction of these techniques in embryo testing requires timely ethical reflection as it involves a shift from choosing an embryo without a particular genetic disease (i.e. PGD) or most likely to result in a successful pregnancy (i.e. PGS) to choosing the best embryo based on a much wider set of criteria. Such ethical reflection should take account of current technical and biological limitations and also of current uncertainties with regard to the meaning of genetic variance. However, ethicists should also not be afraid to look into the future. There was a general agreement that embryo testing will be increasingly preceded by comprehensive preconception screening, thus enabling smart combinations of genetic testing. The group was composed of seven participants from

  8. Fifth Single-Shell Tank Integrity Project Expert Panel Meeting August 28-29, 2014

    Energy Technology Data Exchange (ETDEWEB)

    Martin, Todd M. [Washington River Protection Solutions, LLC, Richland, WA (United States; Gunter, Jason R. [Washington River Protection Solutions, LLC, Richland, WA (United States); Boomer, Kayle D. [Washington River Protection Solutions, LLC, Richland, WA (United States)

    2015-01-07

    On August 28th and 29th, 2014 the Single-Shell Tank Integrity Project (SSTIP) Expert Panel (Panel) convened in Richland, Washington. This was the Panel’s first meeting since 2011 and, as a result, was focused primarily on updating the Panel on progress in response to the past recommendations (Single-Shell Tank Integrity Expert Panel Report, RPP-RPT-45921, Rev 0, May 2010). This letter documents the Panel’s discussions and feedback on Phase I activities and results.

  9. An expert panel approach to support risk-informed decision making

    International Nuclear Information System (INIS)

    Pulkkinen, U.; Simola, K.

    2000-01-01

    The report describes the expert panel methodology developed for supporting risk-informed decision making. The aim of an expert panel is to achieve a balanced utilisation of information and expertise from several disciplines in decision-making including probabilistic safety assessment as one decision criterion. We also summarise the application of the methodology in the STUK's RI-ISI (Risk-Informed In-Service Inspection) pilot study, where the expert panel approach was used to combine the deterministic information on degradation mechanisms and probabilistic information on pipe break consequences. The expert panel served both as a critical review of the preliminary results and as a decision support for the final definition of risk categories of piping. (orig.)

  10. Biphasic Insulin Analogues in Type 2 Diabetes: Expert Panel Recommendations

    Directory of Open Access Journals (Sweden)

    Sema Akalın

    2011-09-01

    of Biphasic Insulin Aspart 30 treatment has been published recently, these types of guidelines cannot always respond to all of the local requirements. Therefore, it is aimed to prepare a guideline to facilitate the use of Biphasic Insulin Aspart 30 in the right patient, at the right time and in the right manner, as well as to help the physicians. A guideline, aiming to contain current evidences and to meet local requirements, was developed in May and June 2010 by an expert panel composed of experienced endocrinologists working at different parts of Turkey. The guideline includes initial treatment, optimization of initiation dose, and intensification of Biphasic Insulin Aspart 30 during the disease progression. Although previously published global guidelines about initiation, intensification, dose division, dose addition and combination of Biphasic Insulin Aspart 30 with OADs is in applicable situation in general, the content is enlarged by adding some special conditions. Administration information presented in this article forms simply a suggestion rather than a strict recommendation. Since the treatment of every diabetic patient should be individualized, suggestions of this guideline do not have any obligatory power on physicians. Turk Jem 2011; 15: 65-70

  11. DELPHI expert panel evaluation of Hanford high level waste tank failure modes and release quantities

    Energy Technology Data Exchange (ETDEWEB)

    Dunford, G.L.; Han, F.C.

    1996-09-30

    The Failure Modes and Release Quantities of the Hanford High Level Waste Tanks due to postulated accident loads were established by a DELPHI Expert Panel consisting of both on-site and off-site experts in the field of Structure and Release. The Report presents the evaluation process, accident loads, tank structural failure conclusion reached by the panel during the two-day meeting.

  12. Thermal Analysis of Solar Panels

    Science.gov (United States)

    Barth, Nicolas; de Correia, João Pedro Magalhães; Ahzi, Saïd; Khaleel, Mohammad Ahmed

    In this work, we propose to analyze the thermal behavior of PV panels using finite element simulations (FEM). We applied this analysis to compute the temperature distribution in a PV panel BP 350 subjected to different atmospheric conditions. This analysis takes into account existing formulations in the literature and, based on NOCT conditions, meteorological data was used to validate our approach for different wind speed and solar irradiance. The electrical performance of the PV panel was also studied. The proposed 2D FEM analysis is applied to different region's climates and was also used to consider the role of thermal inertia on the optimization of the PV device efficiency.

  13. Characteristics of two questionnaires used to assess interprofessional learning: psychometrics and expert panel evaluations.

    Science.gov (United States)

    Edelbring, Samuel; Dahlgren, Madeleine Abrandt; Wiegleb Edström, Desiree

    2018-03-20

    Interprofessional learning activities are included in many curricula but are difficult to assess. For languages that are not widely spoken such as Swedish, few validated questionnaires exist that relate to interprofessional outcomes. Therefore, the aim was to examine two such questionnaires in relation to interprofessional competence domains. Psychometric characteristics, such as homogeneity of items and internal consistency, were assessed for the Swedish versions of the Jefferson Scale of Attitudes Towards Physician-Nurse Collaboration (JSAPNC) and the Readiness for Interprofessional Learning Scale (RIPLS). The questionnaires were distributed directly following IPL activities. Mokken scale analysis based on Loevinger's coefficient for homogeneity and Cronbach's alpha were used to evaluate the scales. Two expert panels performed a qualitative analysis of items in relation to four internationally defined interprofessional competences. In total, 88 and 84 responded to the JSAPNC and RIPLS questionnaires, respectively. Estimates of homogeneity were low for both the JSAPNC (H = 0.16) and the RIPLS (H = 0.21). Reliabilities were weak (0.62 and 0.66, respectively) for the total scales. The expert panels categorised 68% of items into similar competence domains. However, their discussion revealed ambiguous wordings and imbalances in the two questionnaires in relation to domains. Interprofessional competence domains are defined but few validated tools exist to assess them. Examined tools relating to interprofessional learning in Swedish do not qualify for assessing overarching IPL outcomes, and summed scores from these tools should be used with caution.

  14. EXPERT PANEL OVERSIGHT COMMITTEE ASSESSMENT OF FY2008 CORROSION AND STRESS CORROSION CRACKING SIMULANT TESTING PROGRAM

    Energy Technology Data Exchange (ETDEWEB)

    BOOMER KD

    2009-01-08

    The Expert Panel Oversight Committee (EPOC) has been overseeing the implementation of selected parts of Recommendation III of the final report, Expert Panel workshop for Hanford Site Double-Shell Tank Waste Chemistry Optimization, RPP-RPT-22126. Recommendation III provided four specific requirements necessary for Panel approval of a proposal to revise the chemistry control limits for the Double-Shell Tanks (DSTs). One of the more significant requirements was successful performance of an accelerated stress corrosion cracking (SCC) experimental program. This testing program has evaluated the optimization of the chemistry controls to prevent corrosion in the interstitial liquid and supernatant regions of the DSTs.

  15. Sensory evaluation of irradiated hake (Merluccius merluccius hubbsi) by an expert trade panel

    International Nuclear Information System (INIS)

    Lescano, G.

    1989-01-01

    Commercial high quality hake (Merluccius merluccius hubbsi) scaled, headless and eviscerated, caught in the South Atlantic Ocean, was analyzed by an expert testing panel. The samples were the following: one lot vacuum packed, another lot previously dipped in 10% sodium poliphosphate, both irradiated with 3.3 kGy and then stored at 0deg C±1deg C, and a third lot, air-packed, frozen, kept at -20deg C±2 deg C, and used as control. The analysis was made on day 36 after catch. The evaluations were performed by a panel of 5 experts in buying fish to export. The following attributes were analyzed: on raw fish: external appearance, muscle elasticity, shine, bone adhesion, muscle cohesion, odor, natural odor, unpleasant odor and purchase acceptability. On oven cooked samples: odor, natural odor, unpleasant odor, flavor, natural flavor, unpleasant flavor, oral texture and general acceptability. Data were analyzed by student test (p ≤ 0.05). The results showed that the raw irradiated fish (with and without dip in polyphosphate) were generally significantly better than the raw frozen hake; and cooked frozen hake was better than the irradiated one but not significantly different. An undesirable off odor on cooked irradiated samples was detected, that would be an irradiation effect. It could be minimized with a lower dose. The polyphosphate dip did not modify the amount of drip loss. (Author) [es

  16. Poor Agreement Among Expert Witnesses in Bile Duct Injury Malpractice Litigation An Expert Panel Survey

    NARCIS (Netherlands)

    de Reuver, Philip R.; Dijkgraaf, Marcel G. W.; Gevers, Sjef K. M.; Gouma, Dirk J.

    2008-01-01

    Objective: To determine the inter-rater agreement of expert witness testimonies in bile duct injury malpractice litigation. Background Data: Malpractice litigation is an increasing concern in modem surgical practice. As most of the lawyers are not educated in medicine, expert witnesses are asked to

  17. Poor agreement among expert witnesses in bile duct injury malpractice litigation: an expert panel survey.

    NARCIS (Netherlands)

    Reuver, P.R. de; Dijkgraaf, M.G.; Gevers, S.K.; Gouma, D.J.; Bleichrodt, R.P.; Cuesta, M.A.; Erp, W.F. van; Gerritsen, J.; Hesselink, E.J.; Laarhoven, C.J.H.M. van; Lange, J. de; Obertop, H.; Stassen, L.P.; Terpstra, O.T.; Tilanus, H.W.; Vroonhoven, T.J.; Wit, L. de

    2008-01-01

    OBJECTIVE: To determine the inter-rater agreement of expert witness testimonies in bile duct injury malpractice litigation. BACKGROUND DATA: Malpractice litigation is an increasing concern in modern surgical practice. As most of the lawyers are not educated in medicine, expert witnesses are asked to

  18. Addressing tobacco use in homeless populations: recommendations of an expert panel.

    Science.gov (United States)

    Porter, Janet; Houston, Lisa; Anderson, Robert H; Maryman, Kristi

    2011-11-01

    A diverse group of panelists met for one day on October 21, 2009, in Washington, DC, for the purpose of addressing the high tobacco use prevalence rates in homeless populations; identifying appropriate policy, cessation practices and models for implementation in this population; and providing targeted recommendations for researchers, homeless service providers, tobacco control advocates, and policy makers. The panel was convened by Break Free Alliance, one of six national networks funded by the Centers for Disease Control and Prevention, Office on Smoking and Health. The panelists worked through a process of problem identification, generation of responses, analysis and prioritization, development of recommendations, and arrival of final decisions reached by consensus. The resulting recommendations for addressing tobacco use in homeless populations focused on tobacco non-use policy implementation, cessation programming, and expansion of partnerships and collaborations between tobacco control advocates and social service providers. The panel also identified unanswered research questions that can serve to develop a framework for future initiatives to reduce tobacco use among homeless persons. The expert panel model serves as one approach for engaging nontraditional partners and building consensus among leaders from a variety of sectors to address tobacco use in special populations.

  19. Environmental factors and puberty timing: expert panel research needs

    DEFF Research Database (Denmark)

    Louis, G.M. Buck; Jr, L.E. Gray; Marcus, M.

    2008-01-01

    initiatives include (1) etiologic research that focus on environmentally relevant levels of endocrine-disrupting chemicals and body size in relation to normal puberty as well as its variants, (2) exposure assessment of relevant endocrine-disrupting chemicals during critical windows of human development......, body size, and puberty. The panel concluded that available experimental animal and human data support a possible role of endocrine-disrupting chemicals and body size in relation to alterations in pubertal onset and progression in boys and girls. Critical data gaps prioritized for future research...

  20. Wind turbine sound and health effects : an expert panel review

    International Nuclear Information System (INIS)

    Colby, D.; Lipscomb, D.M.; McCunney, R.J.; Seilo, M.T.; Sondergaard, B.

    2009-12-01

    This paper presented the results of a study conducted to review the current literature available on the perceived health effects of wind turbines. The review was conducted by a multidisciplinary panel comprised of audiologists, medical doctors, and acoustical professionals from throughout the world. The document was prepared as a reference point for legislators, regulators and other stakeholders in need of information about wind turbine sounds. A large body of peer-reviewed literature on sound and health effects in general were reviewed in order to assess the plausible biological effects of exposure to wind turbine sound. A review of potential environmental exposures associated with wind turbine operations was conducted. Results of the study indicated that there is no evidence that the sounds emitted by wind turbines have any direct adverse physiological effects, and that the ground-borne vibrations from wind turbines are too weak to be detected or to affect humans. The panel concluded that the sounds from wind turbines can not plausibly have direct adverse health consequences. 126 refs., 3 tabs., 4 figs., 5 appendices.

  1. NTP-CERHR expert panel report on the reproductive and developmental toxicity of methanol.

    Science.gov (United States)

    Shelby, Michael; Portier, Christopher; Goldman, Lynn; Moore, John; Iannucci, Annette; Jahnke, Gloria; Donkin, Steve

    2004-05-01

    The National Toxicology Program (NTP) and the National Institute of Environmental Health Sciences (NIEHS) established the NTP Center for the Evaluation of Risks to Human Reproduction (CERHR) in June 1998. The purpose of the Center is to provide timely, unbiased, scientifically sound evaluations of human and experimental evidence for adverse effects on reproduction, including development, caused by agents to which humans may be exposed. Methanol was selected for evaluation by the CERHR based on high production volume, extent of human exposure, and published evidence of reproductive or developmental toxicity. Methanol is used in chemical syntheses and as an industrial solvent. It is a natural component of the human diet and is found in consumer products such as paints, antifreeze, cleaning solutions, and adhesives. It is used in race car fuels and there is potential for expanded use as an automobile fuel. This evaluation is the result of a 10-month effort by a 12-member panel of government and non-government scientists that culminated in a public Expert Panel meeting. This report has been reviewed by CERHR staff scientists, and by members of the Methanol Expert Panel. Copies have been provided to the CERHR Core Committee, which is made up of representatives of NTP-participating agencies. This report is a product of the Expert Panel and is intended to (1). interpret the strength of scientific evidence that a given exposure or exposure circumstance may pose a hazard to reproduction and the health and welfare of children; (2). provide objective and scientifically thorough assessments of the scientific evidence that adverse reproductive/development health effects are associated with exposure to specific chemicals or classes of chemicals, including descriptions of any uncertainties that would diminish confidence in assessment of risks; and (3). identify knowledge gaps to help establish research and testing priorities. The expert panel report becomes a central part of the

  2. Modelling drug-related morbidity in Sweden using an expert panel of pharmacists'.

    Science.gov (United States)

    Gyllensten, Hanna; Hakkarainen, Katja M; Jönsson, Anna K; Andersson Sundell, Karolina; Hägg, Staffan; Rehnberg, Clas; Carlsten, Anders

    2012-08-01

    Drug-related morbidity (DRM) is common and to some extent preventable, and associated with considerable costs in patients attending hospital. In outpatients and in the general public corresponding data are limited, but pharmacists' expert opinion has suggested high rates of DRM also in US ambulatory care. It is unknown if the results are applicable in Sweden today. To estimate the proportions of patients with DRM and preventable DRM and the cost-of-illness (COI) of DRM in Sweden based on pharmacists' expert opinion. Swedish healthcare. The study applied a conceptual model of DRM based on a decision tree. An expert panel of pharmacists determined the probabilities of therapeutic outcomes of medication therapy. The COI analysis included direct costs from the healthcare perspective. Sensitivity analyses were performed for variations in probabilities and pathway costs. DRM included new medical problems (adverse drug reactions, drug dependence and intoxications) and therapeutic failures (insufficient effects of medicines and morbidity due to untreated indication). The expert panel estimated that 61 ± 14 % (mean ± SD) of all patients attending healthcare suffered from DRM, of which 29 ± 8 % suffered from new medical problems, 18 ± 6 % from therapeutic failures, and 15 ± 7 % from a combination of both. The DRM was considered preventable in 45 ± 15 % of the patients with DRM. The estimated COI was EUR 997 per patient attending healthcare, corresponding to an annual cost of EUR 6,600 million to the Swedish healthcare system. The COI ranged from EUR 490 to EUR 1,314 when varying the participants' probabilities of DRM and clinical outcomes from the first to the third quartile. Of the pathway costs, the COI was most sensitive to variation in the cost of prolonged hospital stay (COI range EUR 953-1,306). According to pharmacists' expert opinion, a large proportion of patients in Sweden experience DRM and preventable DRM, and the estimated COI of DRM is extensive. Since

  3. Cough in Ambulatory Immunocompromised Adults: CHEST Expert Panel Report.

    Science.gov (United States)

    Rosen, Mark J; Ireland, Belinda; Narasimhan, Mangala; French, Cynthia; Irwin, Richard S

    2017-11-01

    Cough is a common symptom prompting patients to seek medical care. Like patients in the general population, patients with compromised immune systems also seek care for cough. However, it is unclear whether the causes of cough in immunocompromised patients who are deemed unlikely to have a life-threating condition and a normal or unchanged chest radiograph are similar to those in persons with cough and normal immune systems. We conducted a systematic review to answer the question: What are the most common causes of cough in ambulatory immunodeficient adults with normal chest radiographs? Studies of patients ≥ 18 years of age with immune deficiency, cough of any duration, and normal or unchanged chest radiographs were included and assessed for relevance and quality. Based on the systematic review, suggestions were developed and voted on using the American College of Chest Physicians (CHEST) methodology framework. The results of the systematic review revealed no high-quality evidence to guide the clinician in determining the likely causes of cough specifically in immunocompromised ambulatory patients with normal chest radiographs. Based on a systematic review, we found no evidence to assess whether or not the proper initial evaluation of cough in immunocompromised patients is different from that in immunocompetent persons. A consensus of the panel suggested that the initial diagnostic algorithm should be similar to that for immunocompetent persons but that the context of the type and severity of the immune defect, geographic location, and social determinants be considered. The major modifications to the 2006 CHEST Cough Guidelines are the suggestions that TB should be part of the initial evaluation of patients with cough and HIV infection who reside in regions with a high prevalence of TB, regardless of the radiographic findings, and that specific causes and immune defects be considered in all patients in whom the initial evaluation is unrevealing. Copyright

  4. Current practice with endoscopic submucosal dissection in Europe: position statement from a panel of experts

    DEFF Research Database (Denmark)

    Deprez, P H; Bergman, J J; Meisner, S

    2010-01-01

    level, and should include information on indication (Paris classification of lesion, location, and histological results prior to treatment), technique used (e.¿g. type of knife), results (en bloc and R0 resection), complications, and follow-up. The panel also agreed on minimal institutional requirements......, exposure to experts (currently all in Japan), hands-on experience in a model of isolated pig stomach and in live pigs, and management of complications. The experts did not reach a consensus on a minimum case load, or whether the technique should be restricted to expert centers....

  5. Current practice with endoscopic submucosal dissection in Europe: position statement from a panel of experts

    DEFF Research Database (Denmark)

    Deprez, P H; Bergman, J J; Meisner, S

    2010-01-01

    level, and should include information on indication (Paris classification of lesion, location, and histological results prior to treatment), technique used (e. g. type of knife), results (en bloc and R0 resection), complications, and follow-up. The panel also agreed on minimal institutional requirements......, exposure to experts (currently all in Japan), hands-on experience in a model of isolated pig stomach and in live pigs, and management of complications. The experts did not reach a consensus on a minimum case load, or whether the technique should be restricted to expert centers....

  6. What is case management in palliative care? An expert panel study

    NARCIS (Netherlands)

    van der Plas, A.G.M.; Onwuteaka-Philipsen, B.D.; van de Watering, M.; Jansen, W.J.J.; Vissers, K.C.; Deliens, L.

    2012-01-01

    Background: Case management is a heterogeneous concept of care that consists of assessment, planning, implementing, coordinating, monitoring, and evaluating the options and services required to meet the client's health and service needs. This paper describes the result of an expert panel procedure

  7. NTP-CERHR EXPERT PANEL REPORT ON THE REPRODUCTIVE AND DEVELOPMENTAL TOXICITY OF AMPHETAMINE AND METHAMPHETAMINE.

    Science.gov (United States)

    A manuscript describes the results of an expert panel meeting of the NTP Center for the Evaluation of Risks to Human Reproduction (CERHR). The purpose CERHR is to provide timely, unbiased, scientifically sound evaluations of human and experimental evidence for adverse effects ...

  8. Establishment of Reference Doses for residues of allergenic foods: Report of the VITAL Expert Panel

    NARCIS (Netherlands)

    Taylor, S.L.; Baumert, J.L.; Kruizinga, A.G.; Remington, B.C.; Crevel, R.W.R.; Brooke-Taylor, S.; Allen, K.J.; Houben, G.

    2014-01-01

    In 2011, an expert panel was assembled to establish appropriate Reference Doses for allergenic food residues as a part of the VITAL (Voluntary Incidental Trace Allergen Labeling) program of The Allergen Bureau of Australia & New Zealand (ABA). These Reference Doses would guide advisory labeling

  9. Measurements of Radioactivity in Body Organs. Report of a Panel of Experts

    International Nuclear Information System (INIS)

    1970-01-01

    Measurements of radioactivity in body organs in vivo entail physical and other problems which do not arise in measurements of radioactivity in vitro. From 8-12 December 1969 the International Atomic Energy Agency convened at its Headquarters in Vienna a panel of experts to review the existing status of techniques for such measurements

  10. QT Interval Screening in Methadone Maintenance Treatment: Report of a SAMHSA Expert Panel

    Science.gov (United States)

    Martin, Judith A.; Campbell, Anthony; Killip, Thomas; Kotz, Margaret; Krantz, Mori J.; Kreek, Mary Jeanne; McCarroll, Brian A.; Mehta, Davendra; Payte, J. Thomas; Stimmel, Barry; Taylor, Trusandra; Wilford, Bonnie B.

    2014-01-01

    In an effort to enhance patient safety in Opioid Treatment Programs (OTPs), the Substance Abuse and Mental Health Services Administration (SAMHSA) convened a multi-disciplinary Expert Panel on the Cardiac Effects of Methadone. Panel members reviewed the literature, regulatory actions, professional guidances, and OTPs’ experiences regarding adverse cardiac events associated with methadone. The Panel concluded that, to the extent possible, every OTP should have a universal Cardiac Risk Management Plan (incorporating clinical assessment, ECG assessment, risk stratification, and prevention of drug interactions) for all patients, and should strongly consider patient-specific risk minimization strategies (such as careful patient monitoring, obtaining ECGs as indicated by a particular patient’s risk profile, and adjusting the methadone dose as needed) for patients with identified risk factors for adverse cardiac events. The Panel also suggested specific modifications to informed consent documents, patient education, staff education, and methadone protocols. PMID:22026519

  11. Identification of recruitment and retention strategies for rehabilitation professionals in Ontario, Canada: results from expert panels

    Directory of Open Access Journals (Sweden)

    Landry Michel D

    2008-12-01

    Full Text Available Abstract Background Demand for rehabilitation services is expected to increase due to factors such as an aging population, workforce pressures, rise in chronic and complex multi-system disorders, advances in technology, and changes in interprofessional health service delivery models. However, health human resource (HHR strategies for Canadian rehabilitation professionals are lagging behind other professional groups such as physicians and nurses. The objectives of this study were: 1 to identify recruitment and retention strategies of rehabilitation professionals including occupational therapists, physical therapists and speech language pathologists from the literature; and 2 to investigate both the importance and feasibility of the identified strategies using expert panels amongst HHR and education experts. Methods A review of the literature was conducted to identify recruitment and retention strategies for rehabilitation professionals. Two expert panels, one on Recruitment and Retention and the other on Education were convened to determine the importance and feasibility of the identified strategies. A modified-delphi process was used to gain consensus and to rate the identified strategies along these two dimensions. Results A total of 34 strategies were identified by the Recruitment and Retention and Education expert panels as being important and feasible for the development of a HHR plan for recruitment and retention of rehabilitation professionals. Seven were categorized under the Quality of Worklife and Work Environment theme, another seven in Financial Incentives and Marketing, two in Workload and Skill Mix, thirteen in Professional Development and five in Education and Training. Conclusion Based on the results from the expert panels, the three major areas of focus for HHR planning in the rehabilitation sector should include strategies addressing Quality of Worklife and Work Environment, Financial Incentives and Marketing and Professional

  12. Using Expert Panel Data to Guide Youth Agricultural Safety and Health Training Resources in the US

    Directory of Open Access Journals (Sweden)

    Andrew J. Mann

    2017-01-01

    Full Text Available The US Department of Labor (US DOL oversees the Agricultural Hazardous Occupations Orders (AgHOs, which identifies specific tasks that youth are prohibited from performing for hire on American farms and ranches. An educational exemption from this public policy is currently in place that allows youth, 14–15 years old, to complete a certification program prior to engaging in agricultural work involving tractors and machinery. However, limited guidance is provided in the legislation regarding the format or content of the tractor and machinery certification exemption. Four AgHOs (tractor and machinery studies were identified and included in this meta-analysis publication. The research goals of this analysis were to determine basic trends of learning outcomes, and identify educational content to be delivered as a result of these studies. Within each of the four studies, expert panels were used to identify educational learning outcomes. The analysis revealed that 48.0% (n = 184 of all learning outcome items fell within the Tractor-based (Tractor learning outcome category, 29.8% (n = 114 within General Safety and Health (General, and 22.2% (n = 85 of items in the Machinery-based (Machinery category. Ultimately, sound educational methods and understanding of fundamental student competence are essential components for any training program, including youth who complete AgHOs tractor and machinery certification programs.

  13. Breaking Bad News: Different Approaches in Different Countries of Iran and Germany- an Expert Panel

    Directory of Open Access Journals (Sweden)

    Carl Eduard Scheidt

    2017-10-01

    Full Text Available In this expert panel report which was held in Isfahan, Iran, the participants were Carl Eduard Scheidt, Alexander Wunsch, Hamid Afshar, Farzad Goli, Azadeh Malekian, Mohammad Reza Sharbafchi, Masoud Ferdosi, Farzad Taslimi, and Mitra Molaeinezhad. Professor Scheidt was the facilitator and coordinator of the discussion. Therefore, he started it with a brief introduction. After all is said and done, he ended the discussion with a conclusion.

  14. Global Advances in Business Communication from Multiple Perspectives: A Panel Discussion from Experts in the Field

    OpenAIRE

    Victor, David A.

    2012-01-01

    This article presents a panel discussion from 16 leading experts on the direction of global business communication answering the following five questions: 1) In what direction do you see global business communication going? 2) How do new media and social media influence global business communication? 3) In what way does local culture continue to affect global business communication? In what ways do multinational companies and enterprises need to consider local cultural differences regarding t...

  15. Expert panel review of electromagnetic field; Ekspertgruppens gjennomgang av elektromagnetiske felt

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-11-01

    What happens to the body when we are near cell phones, base stations and wireless networks are questions that are much debated in the media. A panel of experts appointed by the Health and transport authorities have reviewed research results, test results and management in this field and concludes that the large number of studies that are considered, not provide evidence that these devices can cause adverse health effects. This information leaflet shows the main conclusions from the review. (eb)

  16. The Appropriateness of Renal Angioplasty. The ANPARIA Software: A Multidisciplinary Expert Panel Approach

    International Nuclear Information System (INIS)

    Gerbaud, Laurent; Manhes, Geraud; Debourse, Juliette; Gouby, Gerald; Glanddier, Phyllis-Yvonne; Vader, John-Paul; Boyer, Louis; Deteix, Patrice

    2008-01-01

    Percutaneous transluminal renal angioplasty (PTRA) is an invasive technique that is costly and involves the risk of complications and renal failure. The ability of PTRA to reduce the administration of antihypertensive drugs has been demonstrated. A potentially greater benefit, which nevertheless remains to be proven, is the deferral of the need for chronic dialysis. The aim of the study (ANPARIA) was to assess the appropriateness of PTRA to impact on the evolution of renal function. A standardized expert panel method was used to assess the appropriateness of medical treatment alone or medical treatment with revascularization in various clinical situations. The choice of revascularization by either PTRA or surgery was examined for each clinical situation. Analysis was based on a detailed literature review and on systematically elicited expert opinion, which were obtained during a two-round modified Delphi process. The study provides detailed responses on the appropriateness of PTRA for 1848 distinct clinical scenarios. Depending on the major clinical presentation, appropriateness of revascularization varied from 32% to 75% for individual scenarios (overal 48%). Uncertainty as to revascularization was 41% overall. When revascularization was appropriate, PTRA was favored over surgery in 94% of the scenarios, except in certain cases of aortic atheroma where sugery was the preferred choice. Kidney size >7 cm, absence of coexisting disease, acute renal failure, a high degree of stenosis (≥70%), and absence of multiple arteries were identified as predictive variables of favorable appropriateness ratings. Situations such as cardiac failure with pulmonary edema or acute thrombosis of the renal artery were defined as indications for PTRA. This study identified clinical situations in which PTRA or surgery are appropriate for renal artery disease. We built a decision tree which can be used via Internet: the ANPARIA software (http://www

  17. Technical Aspects of Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration: CHEST Guideline and Expert Panel Report.

    Science.gov (United States)

    Wahidi, Momen M; Herth, Felix; Yasufuku, Kazuhiro; Shepherd, Ray Wesley; Yarmus, Lonny; Chawla, Mohit; Lamb, Carla; Casey, Kenneth R; Patel, Sheena; Silvestri, Gerard A; Feller-Kopman, David J

    2016-03-01

    Endobronchial ultrasound (EBUS) was introduced in the last decade, enabling real-time guidance of transbronchial needle aspiration (TBNA) of mediastinal and hilar structures and parabronchial lung masses. The many publications produced about EBUS-TBNA have led to a better understanding of the performance characteristics of this procedure. The goal of this document was to examine the current literature on the technical aspects of EBUS-TBNA as they relate to patient, technology, and proceduralist factors to provide evidence-based and expert guidance to clinicians. Rigorous methodology has been applied to provide a trustworthy evidence-based guideline and expert panel report. A group of approved panelists developed key clinical questions by using the PICO (population, intervention, comparator, and outcome) format that addressed specific topics on the technical aspects of EBUS-TBNA. MEDLINE (via PubMed) and the Cochrane Library were systematically searched for relevant literature, which was supplemented by manual searches. References were screened for inclusion, and well-recognized document evaluation tools were used to assess the quality of included studies, to extract meaningful data, and to grade the level of evidence to support each recommendation or suggestion. Our systematic review and critical analysis of the literature on 15 PICO questions related to the technical aspects of EBUS-TBNA resulted in 12 statements: 7 evidence-based graded recommendations and 5 ungraded consensus-based statements. Three questions did not have sufficient evidence to generate a statement. Evidence on the technical aspects of EBUS-TBNA varies in strength but is satisfactory in certain areas to guide clinicians on the best conditions to perform EBUS-guided tissue sampling. Additional research is needed to enhance our knowledge regarding the optimal performance of this effective procedure. Copyright © 2016 American College of Chest Physicians. Published by Elsevier Inc. All rights

  18. Expert Opinion Is Necessary: Delphi Panel Methodology Facilitates a Scientific Approach to Consensus.

    Science.gov (United States)

    Hohmann, Erik; Brand, Jefferson C; Rossi, Michael J; Lubowitz, James H

    2018-02-01

    Our current trend and focus on evidence-based medicine is biased in favor of randomized controlled trials, which are ranked highest in the hierarchy of evidence while devaluing expert opinion, which is ranked lowest in the hierarchy. However, randomized controlled trials have weaknesses as well as strengths, and no research method is flawless. Moreover, stringent application of scientific research techniques, such as the Delphi Panel methodology, allows survey of experts in a high quality and scientific manner. Level V evidence (expert opinion) remains a necessary component in the armamentarium used to determine the answer to a clinical question. Copyright © 2017 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.

  19. International Expert Panel Consensus Guidelines for Structure and Delivery of Qigong Exercise for Cancer Care Programming

    Science.gov (United States)

    Klein, Penelope; Picard, George; Schneider, Roger; Oh, Byeongsang

    2017-01-01

    Integrative oncology, including Qigong, is a relatively new concept in modern healthcare. Evidence of benefits of Qigong in cancer survivors is emerging. As such, several cancer centers, world-wide, have introduced Qigong as part of integrative medicine within supportive cancer care programming. Qigong exercise programming content and quality varies among institutions due to lack of standard guidelines and, at present, relies solely on the instructor’s skills, knowledge, personal preferences and clinical experience. Development of consensus guidelines recommending the basic structure and delivery of Qigong programming in cancer care can potentiate quality assurance and reduce risk of harm. This applied qualitative research utilized a modified Delphi approach to formulate consensus guidelines. Guidelines were developed through discussions among an international expert panel (N = 13) with representation from Australia, Canada, Ireland, and the United States. Panel communication was predominantly conducted by email and occurred from November 2016 through February 2017. Expert panel work resulted in the generation of a work product: Qigong in Cancer Care Guidelines: A Working Paper including: (a) Consensus Guidelines for structure and delivery of Qigong exercise for Cancer care programming; (b) Consensus guidelines for instructor competence for teaching Qigong exercise for cancer care classes; (c) Screening tool for safe participation in Qigong exercise; (d) Class participant instructions for maintaining safety during Qigong exercise; and (e) Advice from the field. Generation of these resources is the first step in establishing recommendations for ‘best practice’ in the area of Qigong for cancer care programming.

  20. Evaluation and management of acute menorrhagia in women with and without underlying bleeding disorders: consensus from an international expert panel

    NARCIS (Netherlands)

    James, Andra H.; Kouides, Peter A.; Abdul-Kadir, Rezan; Dietrich, Jennifer E.; Edlund, Mans; Federici, Augusto B.; Halimeh, Susan; Kamphuisen, Pieter Willem; Lee, Christine A.; Martínez-Perez, Oscar; McLintock, Claire; Peyvandi, Flora; Philipp, Claire; Wilkinson, Jeffrey; Winikoff, Rochelle

    2011-01-01

    Acute menorrhagia is a common gynecological disorder. Prevalence is high among women with inherited bleeding disorders and recent guidance for optimal management is lacking. Following a comprehensive review of the literature, an international expert panel in obstetrics, gynecology and hematology

  1. Analysis of 3-panel and 4-panel microscale ionization sources

    International Nuclear Information System (INIS)

    Natarajan, Srividya; Parker, Charles B.; Glass, Jeffrey T.; Piascik, Jeffrey R.; Gilchrist, Kristin H.; Stoner, Brian R.

    2010-01-01

    Two designs of a microscale electron ionization (EI) source are analyzed herein: a 3-panel design and a 4-panel design. Devices were fabricated using microelectromechanical systems technology. Field emission from carbon nanotube provided the electrons for the EI source. Ion currents were measured for helium, nitrogen, and xenon at pressures ranging from 10 -4 to 0.1 Torr. A comparison of the performance of both designs is presented. The 4-panel microion source showed a 10x improvement in performance compared to the 3-panel device. An analysis of the various factors affecting the performance of the microion sources is also presented. SIMION, an electron and ion optics software, was coupled with experimental measurements to analyze the ion current results. The electron current contributing to ionization and the ion collection efficiency are believed to be the primary factors responsible for the higher efficiency of the 4-panel microion source. Other improvements in device design that could lead to higher ion source efficiency in the future are also discussed. These microscale ion sources are expected to find application as stand alone ion sources as well as in miniature mass spectrometers.

  2. NTP-CERHR expert panel report on the developmental toxicity of soy infant formula.

    Science.gov (United States)

    McCarver, Gail; Bhatia, Jatinder; Chambers, Christina; Clarke, Robert; Etzel, Ruth; Foster, Warren; Hoyer, Patricia; Leeder, J Steven; Peters, Jeffrey M; Rissman, Emilie; Rybak, Michael; Sherman, Claire; Toppari, Jorma; Turner, Katie

    2011-10-01

    Soy infant formula contains soy protein isolates and is fed to infants as a supplement to or replacement for human milk or cow milk. Soy protein isolates contains estrogenic isoflavones (phytoestrogens) that occur naturally in some legumes, especially soybeans. Phytoestrogens are nonsteroidal, estrogenic compounds. In plants, nearly all phytoestrogens are bound to sugar molecules and these phytoestrogen-sugar complexes are not generally considered hormonally active. Phytoestrogens are found in many food products in addition to soy infant formula, especially soy-based foods such as tofu, soy milk, and in some over-the-counter dietary supplements. Soy infant formula was selected for National Toxicology Program (NTP) evaluation because of (1) the availability of large number of developmental toxicity studies in laboratory animals exposed to the isoflavones found in soy infant formula (namely, genistein) or other soy products, as well as few studies on human infants fed soy infant formula, (2) the availability of information on exposures in infants fed soy infant formula, and (3) public concern for effects on infant or child development. On October 2, 2008 (73 FR 57360), the NTP Center for the Evaluation of Risks to Human Reproduction (CERHR) announced its intention to conduct an updated review of soy infant formula to complete a previous evaluation that was initiated in 2005. Both the current and previous evaluations relied on expert panels to assist the NTP in developing its conclusions on the potential developmental effects associated with the use of soy infant formula, presented in the NTP Brief on Soy Infant Formula. The initial expert panel met on March 15 to 17, 2006, to reach conclusions on the potential developmental and reproductive toxicities of soy infant formula and its predominant isoflavone constituent genistein. The expert panel reports were released for public comment on May 5, 2006 (71 FR 28368). On November 8, 2006 (71 FR 65537), CERHR staff released

  3. 77 FR 15753 - Request for Nominations of Experts for a Science Advisory Board Panel To Review EPA's Web-Based...

    Science.gov (United States)

    2012-03-16

    ... Advisory Board Panel To Review EPA's Web-Based Report on the Environment AGENCY: Environmental Protection... nominations of technical experts to form an SAB panel to review the Agency's Web-based Report on the... are requested including: (a) Environmental scientists and engineers with knowledge of the sources...

  4. Modelling drug-related morbidity in Sweden using an expert panel of physicians.

    Science.gov (United States)

    Hakkarainen, Katja M; Alström, Daniel; Hägg, Staffan; Carlsten, Anders; Gyllensten, Hanna

    2012-09-01

    In modelling studies using pharmacists' opinions, drug-related morbidity (DRM) and preventable DRM have been more common than in observational studies, and the resulting costs are extensive. Modelling studies' estimates may vary depending on informants' profession. The purpose of this modelling study was to estimate the proportion of patients with DRM and preventable DRM and the cost of illness (COI) of DRM in Sweden based on physicians' expert opinions. A conceptual model of DRM was modified from previous studies. Using a modified Delphi technique, a panel of physicians (n = 19) estimated the probabilities of DRM, preventable DRM, and clinical outcomes of DRM separately for outpatients and inpatients. DRM included new medical problems (adverse drug reactions, drug dependence, and intoxications by overdose) and therapeutic failure (insufficient effects of medicines, and morbidity due to untreated indication). A COI analysis included the direct costs of DRM. Physicians estimated that 51 ± 22% [mean ± standard deviation (SD)] of outpatients experience DRM and 12 ± 8% preventable DRM. Of inpatients, 54 ± 17% was estimated to experience DRM and 16 ± 7% preventable DRM. Of outpatients with DRM, 24 ± 11% was estimated to experience preventable DRM, whereas this proportion for inpatients was 31 ± 15%. The estimated COI was 376 euros per outpatient and 838 euros per inpatient. Swedish physicians estimated that every other outpatient and inpatient experiences DRM, which is often preventable and costly. As physicians' estimates on the proportion of patients with DRM were higher than in observational studies in restricted subpopulations, DRM may be more common in the general population than observational studies suggest.

  5. Advancing the future of physical activity guidelines in Canada: an independent expert panel interpretation of the evidence

    DEFF Research Database (Denmark)

    Kesäniemi, Antero; Riddoch, Chris J; Reeder, Bruce

    2010-01-01

    of physical activity guidelines for asymptomatic populations. The overall guideline development process is being guided and assessed by the AGREE II instrument. A meeting of experts was convened to present the evidence complied to inform the guideline revisions. An independent expert panel was assembled...

  6. Implications of the Recommendations of the Expert Panel on Federal Support to Research and Development

    Directory of Open Access Journals (Sweden)

    Preston Manning

    2012-03-01

    Full Text Available Canada lags behind many of its First World counterparts when it comes to business innovation, and urgently needs to improve its performance if it is to remain competitive and attractive to investment. The Expert Panel Report on Federal Support to Research and Development has recommended several policy initiatives that governments need to enact to close the gap. This paper reviews all six major recommendations made by the Expert Panel and provides thorough assessments of each, with ample consideration given to their implications for the private sector. The two most promising are: (1 the consolidation of research and development spending programs at the federal level and (2 the adoption of smart procurement as a means of spurring innovation in the non-government sector. While some of the other recommendations need refinement and raise concerns about their impact on the economy, the message for government and business is clear: the former can and should facilitate Canadian business innovation by removing tax and regulatory burdens and facilitating better public-private cooperation, while the latter must make innovation a major part of corporate culture. This paper explains the consequences of the Panel’s recommendations for both sectors, identifies the deficiencies, and offers clear-eyed guidance for ameliorating them.

  7. What is case management in palliative care? An expert panel study

    Directory of Open Access Journals (Sweden)

    van der Plas Annicka G M

    2012-06-01

    Full Text Available Abstract Background Case management is a heterogeneous concept of care that consists of assessment, planning, implementing, coordinating, monitoring, and evaluating the options and services required to meet the client's health and service needs. This paper describes the result of an expert panel procedure to gain insight into the aims and characteristics of case management in palliative care in the Netherlands. Methods A modified version of the RAND®/University of California at Los Angeles (UCLA appropriateness method was used to formulate and rate a list of aims and characteristics of case management in palliative care. A total of 76 health care professionals, researchers and policy makers were invited to join the expert panel, of which 61% participated in at least one round. Results Nine out of ten aims of case management were met with agreement. The most important areas of disagreement with regard to characteristics of case management were hands-on nursing care by the case manager, target group of case management, performance of other tasks besides case management and accessibility of the case manager. Conclusions Although aims are agreed upon, case management in palliative care shows a high level of variability in implementation choices. Case management should aim at maintaining continuity of care to ensure that patients and those close to them experience care as personalised, coherent and consistent.

  8. Exploring the role and function of trial steering committees: results of an expert panel meeting.

    Science.gov (United States)

    Harman, Nicola L; Conroy, Elizabeth J; Lewis, Steff C; Murray, Gordon; Norrie, John; Sydes, Matt R; Lane, J Athene; Altman, Douglas G; Baigent, Colin; Bliss, Judith M; Campbell, Marion K; Elbourne, Diana; Evans, Stephen; Sandercock, Peter; Gamble, Carrol

    2015-12-30

    The independent oversight of clinical trials, which is recommended by the Medical Research Council (MRC) Guidelines for Good Clinical Practice, is typically provided by an independent advisory Data Monitoring Committee (DMC) and an independent executive committee, to whom the DMC makes recommendations. The detailed roles and function of this executive committee, known as the Trial Steering Committee (TSC), have not previously been studied or reviewed since those originally proposed by the MRC in 1998. An expert panel (n = 7) was convened comprising statisticians, clinicians and trial methodologists with prior TSC experience. Twelve questions about the role and responsibilities of the TSC were discussed by the panel at two full-day meetings. Each meeting was transcribed in full and the discussions were summarised. The expert panel reached agreement on the role of the TSC, to which it was accountable, the membership, the definition of independence, and the experience and training needed. The management of ethical issues, difficult/complex situations and issues the TSC should not ask the DMC to make recommendations on were more difficult to discuss without specific examples, but support existed for further work to help share issues and to provide appropriate training for TSC members. Additional topics discussed, which had not been identified by previous work relating to the DMCs but were pertinent to the role of the TSC, included the following: review of data sharing requests, indemnity, lifespan of the TSC, general TSC administration, and the roles of both the Funder and the Sponsor. This paper presents recommendations that will contribute to the revision and update of the MRC TSC terms of reference. Uncertainty remains in some areas due to the absence of real-life examples; future guidance on these issues would benefit from a repository of case studies. Notably, the role of a patient and public involvement (PPI) contributor was not discussed, and further work is

  9. Management of adverse events associated with idelalisib treatment: expert panel opinion.

    Science.gov (United States)

    Coutré, Steven E; Barrientos, Jacqueline C; Brown, Jennifer R; de Vos, Sven; Furman, Richard R; Keating, Michael J; Li, Daniel; O'Brien, Susan M; Pagel, John M; Poleski, Martin H; Sharman, Jeff P; Yao, Nai-Shun; Zelenetz, Andrew D

    2015-01-01

    Idelalisib is a first-in-class selective, oral, phosphatidylinositol 3-kinase delta (PI3Kδ) inhibitor approved for the treatment of several types of blood cancer. Idelalisib has demonstrated significant efficacy and a tolerable safety profile in clinical trials. However, the US prescribing information contains a black box warning for fatal and/or severe diarrhea or colitis, hepatotoxicity, pneumonitis and intestinal perforation. An expert panel was convened to review the pathology of these treatment-emergent adverse events (TEAEs) to propose key management tools for patients receiving idelalisib therapy. This article provides an overview of idelalisib TEAEs reported in clinical trials, and a summary of the panel's recommendations for identification and management of idelalisib treatment-emergent diarrhea or colitis as well as a discussion of transaminitis and pneumonitis. For idelalisib-related diarrhea or colitis (including unresolved grade 2 and grade ≥ 3), after exclusion of infectious causes, the panel recommends individualized treatment with budesonide or oral or intravenous steroid therapy.

  10. Análise crítica das recomendações formuladas por um painel de experts para o cuidado clínico de pacientes com Leucemia Mielóide Crônica Critical analysis of the recommendations from an expert panel on the management of patients with Chronic Myeloid Leukemia

    Directory of Open Access Journals (Sweden)

    Nelson Spector

    2008-04-01

    Full Text Available As recomendações sobre Leucemia Mielóide Crônica feitas em 2006 por um painel de experts, em nome do "European Leukemia Network", foram adotadas internacionalmente como um roteiro para a monitoração e tratamento da doença. Passados 18 meses de sua publicação, fazemos aqui um sumário dessas recomendações e em seguida apontamos diversas áreas em que as recomendações poderão ser aperfeiçoadas e atualizadas. Aspectos específicos relacionados à aplicação das recomendações no Brasil são também considerados.The recommendations about chronic myeloid leukemia by a panel of experts in 2006 on behalf of the "European Leukemia Network" have been internationally accepted as a guide for monitoring and treatment of this disease. Eighteen months after its publication, we present here a summary of these recommendations, and point to areas in which they might be improved and updated. Specific aspects of the application of these recommendations in Brazil are also considered.

  11. Health Economics of Dengue: A Systematic Literature Review and Expert Panel's Assessment

    Science.gov (United States)

    Beatty, Mark E.; Beutels, Philippe; Meltzer, Martin I.; Shepard, Donald S.; Hombach, Joachim; Hutubessy, Raymond; Dessis, Damien; Coudeville, Laurent; Dervaux, Benoit; Wichmann, Ole; Margolis, Harold S.; Kuritsky, Joel N.

    2011-01-01

    Dengue vaccines are currently in development and policymakers need appropriate economic studies to determine their potential financial and public health impact. We searched five databases (PubMed, EMBASE, LILAC, EconLit, and WHOLIS) to identify health economics studies of dengue. Forty-three manuscripts were identified that provided primary data: 32 report economic burden of dengue and nine are comparative economic analyses assessing various interventions. The remaining two were a willingness-to-pay study and a policymaker survey. An expert panel reviewed the existing dengue economic literature and recommended future research to fill information gaps. Although dengue is an important vector-borne disease, the economic literature is relatively sparse and results have often been conflicting because of use of inconsistent assumptions. Health economic research specific to dengue is urgently needed to ensure informed decision making on the various options for controlling and preventing this disease. PMID:21363989

  12. Use of expert panels to define the reference standard in diagnostic research: a systematic review of published methods and reporting.

    Directory of Open Access Journals (Sweden)

    Loes C M Bertens

    2013-10-01

    Full Text Available BACKGROUND: In diagnostic studies, a single and error-free test that can be used as the reference (gold standard often does not exist. One solution is the use of panel diagnosis, i.e., a group of experts who assess the results from multiple tests to reach a final diagnosis in each patient. Although panel diagnosis, also known as consensus or expert diagnosis, is frequently used as the reference standard, guidance on preferred methodology is lacking. The aim of this study is to provide an overview of methods used in panel diagnoses and to provide initial guidance on the use and reporting of panel diagnosis as reference standard. METHODS AND FINDINGS: PubMed was systematically searched for diagnostic studies applying a panel diagnosis as reference standard published up to May 31, 2012. We included diagnostic studies in which the final diagnosis was made by two or more persons based on results from multiple tests. General study characteristics and details of panel methodology were extracted. Eighty-one studies were included, of which most reported on psychiatry (37% and cardiovascular (21% diseases. Data extraction was hampered by incomplete reporting; one or more pieces of critical information about panel reference standard methodology was missing in 83% of studies. In most studies (75%, the panel consisted of three or fewer members. Panel members were blinded to the results of the index test results in 31% of studies. Reproducibility of the decision process was assessed in 17 (21% studies. Reported details on panel constitution, information for diagnosis and methods of decision making varied considerably between studies. CONCLUSIONS: Methods of panel diagnosis varied substantially across studies and many aspects of the procedure were either unclear or not reported. On the basis of our review, we identified areas for improvement and developed a checklist and flow chart for initial guidance for researchers conducting and reporting of studies

  13. Indonesian dengue burden estimates: review of evidence by an expert panel.

    Science.gov (United States)

    Wahyono, T Y M; Nealon, J; Beucher, S; Prayitno, A; Moureau, A; Nawawi, S; Thabrany, H; Nadjib, M

    2017-08-01

    Routine, passive surveillance systems tend to underestimate the burden of communicable diseases such as dengue. When empirical methods are unavailable, complimentary opinion-based or extrapolative methods have been employed. Here, an expert Delphi panel estimated the proportion of dengue captured by the Indonesian surveillance system, and associated health system parameters. Following presentation of medical and epidemiological data and subsequent discussions, the panel made iterative estimates from which expansion factors (EF), the ratio of total:reported cases, were calculated. Panelists estimated that of all symptomatic Indonesian dengue episodes, 57·8% (95% confidence interval (CI) 46·6-59·8) enter healthcare facilities to seek treatment; 39·3% (95% CI 32·8-42·0) are diagnosed as dengue; and 20·3% (95% CI 16·1-24·3) are subsequently reported in the surveillance system. They estimated most hospitalizations occur in the public sector, while ~55% of ambulatory episodes are seen privately. These estimates gave an overall EF of 5·00; hospitalized EF of 1·66; and ambulatory EF of 34·01 which, when combined with passive surveillance data, equates to an annual average (2006-2015) of 612 005 dengue cases, and 183 297 hospitalizations. These estimates are lower than those published elsewhere, perhaps due to case definitions, local clinical perceptions and treatment-seeking behavior. These findings complement global burden estimates, support health economic analyses, and can be used to inform decision-making.

  14. Predicting panel scores by linguistic analysis

    Energy Technology Data Exchange (ETDEWEB)

    Van den Besselaar, P.; Stout, L.; Gou, X

    2016-07-01

    In this paper we explore the use of text analysis for deriving quality indicators of project proposals. We do full text analysis of 3030 review reports. After term extraction, we aggregate the term occurrences to linguistic categories. Using thse linguistic categories as independent variables, we study how well these predict the grading by the review panels. Together, the different linguistic categories explain about 50% of the variance in the grading of the applications. The relative importance of the different linguistic categories inform us about the way the panels work. This can be used to develop altmetrics for the quality of the peer and panel review processes. (Author)

  15. Evaluation and management of postpartum hemorrhage: consensus from an international expert panel.

    Science.gov (United States)

    Abdul-Kadir, Rezan; McLintock, Claire; Ducloy, Anne-Sophie; El-Refaey, Hazem; England, Adrian; Federici, Augusto B; Grotegut, Chad A; Halimeh, Susan; Herman, Jay H; Hofer, Stefan; James, Andra H; Kouides, Peter A; Paidas, Michael J; Peyvandi, Flora; Winikoff, Rochelle

    2014-07-01

    Postpartum hemorrhage (PPH) remains one of the leading causes of maternal morbidity and mortality worldwide, although the lack of a precise definition precludes accurate data of the absolute prevalence of PPH. An international expert panel in obstetrics, gynecology, hematology, transfusion, and anesthesiology undertook a comprehensive review of the literature. At a meeting in November 2011, the panel agreed on a definition of severe PPH that would identify those women who were at a high risk of adverse clinical outcomes. The panel agreed on the following definition for severe persistent (ongoing) PPH: "Active bleeding >1000 mL within the 24 hours following birth that continues despite the use of initial measures including first-line uterotonic agents and uterine massage." A treatment algorithm for severe persistent PPH was subsequently developed. Initial evaluations include measurement of blood loss and clinical assessments of PPH severity. Coagulation screens should be performed as soon as persistent (ongoing) PPH is diagnosed, to guide subsequent therapy. If initial measures fail to stop bleeding and uterine atony persists, second- and third-line (if required) interventions should be instated. These include mechanical or surgical maneuvers, i.e., intrauterine balloon tamponade or hemostatic brace sutures with hysterectomy as the final surgical option for uncontrollable PPH. Pharmacologic options include hemostatic agents (tranexamic acid), with timely transfusion of blood and plasma products playing an important role in persistent and severe PPH. Early, aggressive, and coordinated intervention by health care professionals is critical in minimizing blood loss to ensure optimal clinical outcomes in management of women with severe, persistent PPH. © 2014 AABB.

  16. Chronic Stroke Outcome Measures for Motor Function Intervention Trials: Expert Panel Recommendations.

    Science.gov (United States)

    Bushnell, Cheryl; Bettger, Janet Prvu; Cockroft, Kevin M; Cramer, Steven C; Edelen, Maria Orlando; Hanley, Daniel; Katzan, Irene L; Mattke, Soeren; Nilsen, Dawn M; Piquado, Tepring; Skidmore, Elizabeth R; Wing, Kay; Yenokyan, Gayane

    2015-10-01

    About half of survivors with stroke experience severe and significant long-term disability. The purpose of this article is to review the state of the science and to make recommendations for measuring patient-centric outcomes in interventions for motor improvement in the chronic stroke phase. A 9-member expert panel reviewed evidence to identify measures of upper and lower extremity function used to date as outcomes in trials with patients who experienced a stroke ≥6 months before assessment. Outcome measures were screened using StrokEDGE consensus panel recommendations, and evaluated for availability of a published minimal clinically important difference. Measures meeting these criteria were further evaluated with regard to their level of measurement, psychometric properties, and ability of minimal clinically important difference to capture gains associated with improved function and clinical relevance to patients, to arrive at recommendations. A systematic literature review yielded 115 clinical trials of upper and lower extremity function in chronic stroke that used a total of 34 outcome measures. Seven of these had published minimal clinically important differences and were recommended or highly recommended by StrokEDGE. Those are the Fugl-Meyer Upper Extremity and Lower Extremity scales, Wolf Motor Function Test, Action Research Arm Test, Ten-Meter and Six-Minute Walk Tests, and the Stroke Impact Scale. All had evidence for their psychometric performance, although the strength of evidence for validity varied, especially in populations with chronic stroke Fugl-Meyer Upper and Lower Extremity scales showing the strongest evidence for validity. The panel recommends that the Fugl-Meyer Upper and Lower Extremity scales be used as primary outcomes in intervention trials targeting motor function in populations with chronic stroke. The other 6 measures are recommended as secondary outcomes. © 2015 American Heart Association, Inc.

  17. The healthy food environment policy index: findings of an expert panel in New Zealand.

    Science.gov (United States)

    Vandevijvere, Stefanie; Dominick, Clare; Devi, Anandita; Swinburn, Boyd

    2015-05-01

    To assess government actions to improve the healthiness of food environments in New Zealand, based on the healthy food environment policy index. A panel of 52 public health experts rated the extent of government implementation against international best practice for 42 indicators of food environment policy and infrastructure support. Their ratings were informed by documented evidence, validated by government officials and international benchmarks. There was a high level of implementation for some indicators: providing ingredient lists and nutrient declarations and regulating health claims on packaged foods; transparency in policy development; monitoring prevalence of noncommunicable diseases and monitoring risk factors for noncommunicable diseases. There was very little, if any implementation of the following indicators: restrictions on unhealthy food marketing to children; fiscal and food retail policies and protection of national food environments within trade agreements. Interrater reliability was 0.78 (95% confidence interval, CI: 0.76-0.79). Based on the implementation gaps, the experts recommended 34 actions, and prioritized seven of these. The healthy food environment policy index provides a useful set of indicators that can focus attention on where government action is needed. It is anticipated that this policy index will increase accountability of governments, stimulate government action and support civil society advocacy efforts.

  18. A practical application of analysing weighted kappa for panels of experts and EQA schemes in pathology.

    Science.gov (United States)

    Wright, Karen C; Harnden, Patricia; Moss, Sue; Berney, Dan M; Melia, Jane

    2011-03-01

    Kappa statistics are frequently used to analyse observer agreement for panels of experts and External Quality Assurance (EQA) schemes and generally treat all disagreements as total disagreement. However, the differences between ordered categories may not be of equal importance (eg, the difference between grades 1 vs 2 compared with 1 vs 3). Weighted kappa can be used to adjust for this when comparing a small number of readers, but this has not as yet been applied to the large number of readers typical of a national EQA scheme. To develop and validate a method for applying weighted kappa to a large number of readers within the context of a real dataset: the UK National Urological Pathology EQA Scheme for prostatic biopsies. Data on Gleason grade recorded by 19 expert readers were extracted from the fixed text responses of 20 cancer cases from four circulations of the EQA scheme. Composite kappa, currently used to compute an unweighted kappa for large numbers of readers, was compared with the mean kappa for all pairwise combinations of readers. Weighted kappa generalised for multiple readers was compared with the newly developed 'pairwise-weighted' kappa. For unweighted analyses, the median increase from composite to pairwise kappa was 0.006 (range -0.005 to +0.052). The difference between the pairwise-weighted kappa and generalised weighted kappa for multiple readers never exceeded ±0.01. Pairwise-weighted kappa is a suitable and highly accurate approximation to weighted kappa for multiple readers.

  19. Patient engagement with surgical site infection prevention: an expert panel perspective.

    Science.gov (United States)

    Tartari, E; Weterings, V; Gastmeier, P; Rodríguez Baño, J; Widmer, A; Kluytmans, J; Voss, A

    2017-01-01

    Despite remarkable developments in the use of surgical techniques, ergonomic advancements in the operating room, and implementation of bundles, surgical site infections (SSIs) remain a substantial burden, associated with increased morbidity, mortality and healthcare costs. National and international recommendations to prevent SSIs have been published, including recent guidelines by the World Health Organization, but implementation into clinical practice remains an unresolved issue. SSI improvement programs require an integrative approach with measures taken during the pre-, intra- and postoperative care from the numerous stakeholders involved. The current SSI prevention strategies have focused mainly on the role of healthcare workers (HCWs) and procedure related risk factors. The importance and influence of patient participation is becoming an increasingly important concept and advocated as a means to improve patient safety. Novel interventions supporting an active participative role within SSI prevention programs have not been assessed. Empowering patients with information they require to engage in the process of SSI prevention could play a major role for the implementation of recommendations. Based on available scientific evidence, a panel of experts evaluated options for patient involvement in order to provide pragmatic recommendations for pre-, intra- and postoperative activities for the prevention of SSIs. Recommendations were based on existing guidelines and expert opinion. As a result, 9 recommendations for the surgical patient are presented here, including a practice brief in the form of a patient information leaflet. HCWs can use this information to educate patients and allow patient engagement.

  20. Patient engagement with surgical site infection prevention: an expert panel perspective

    Directory of Open Access Journals (Sweden)

    E. Tartari

    2017-05-01

    Full Text Available Abstract Despite remarkable developments in the use of surgical techniques, ergonomic advancements in the operating room, and implementation of bundles, surgical site infections (SSIs remain a substantial burden, associated with increased morbidity, mortality and healthcare costs. National and international recommendations to prevent SSIs have been published, including recent guidelines by the World Health Organization, but implementation into clinical practice remains an unresolved issue. SSI improvement programs require an integrative approach with measures taken during the pre-, intra- and postoperative care from the numerous stakeholders involved. The current SSI prevention strategies have focused mainly on the role of healthcare workers (HCWs and procedure related risk factors. The importance and influence of patient participation is becoming an increasingly important concept and advocated as a means to improve patient safety. Novel interventions supporting an active participative role within SSI prevention programs have not been assessed. Empowering patients with information they require to engage in the process of SSI prevention could play a major role for the implementation of recommendations. Based on available scientific evidence, a panel of experts evaluated options for patient involvement in order to provide pragmatic recommendations for pre-, intra- and postoperative activities for the prevention of SSIs. Recommendations were based on existing guidelines and expert opinion. As a result, 9 recommendations for the surgical patient are presented here, including a practice brief in the form of a patient information leaflet. HCWs can use this information to educate patients and allow patient engagement.

  1. Structural Analysis of Sandwich Foam Panels

    Energy Technology Data Exchange (ETDEWEB)

    Kosny, Jan [ORNL; Huo, X. Sharon [Tennessee Technological University

    2010-04-01

    The Sandwich Panel Technologies including Structural Insulated Panels (SIPs) can be used to replace the conventional wooden-frame construction method. The main purpose of this Cooperative Research and Development Agreement (CRADA) between UT-Battelle, LLC and SGI Venture, Inc. was to design a novel high R-value type of metal sandwich panelized technology. This CRADA project report presents design concept discussion and numerical analysis results from thermal performance study of this new building envelope system. The main objective of this work was to develop a basic concept of a new generation of wall panel technologies which will have R-value over R-20 will use thermal mass to improve energy performance in cooling dominated climates and will be 100% termite resistant. The main advantages of using sandwich panels are as follows: (1) better energy saving structural panels with high and uniform overall wall R-value across the elevation that could not be achieved in traditional walls; and (2) reducing the use of raw materials or need for virgin lumber. For better utilization of these Sandwich panels, engineers need to have a thorough understanding of the actual performance of the panels and system. Detailed analysis and study on the capacities and deformation of individual panels and its assembly have to be performed to achieve that goal. The major project activity was to conduct structural analysis of the stresses, strains, load capacities, and deformations of individual sandwich components under various load cases. The analysis simulated the actual loading conditions of the regular residential building and used actual material properties of the steel facings and foam.

  2. Etiologies of Chronic Cough in Pediatric Cohorts: CHEST Guideline and Expert Panel Report.

    Science.gov (United States)

    Chang, Anne B; Oppenheimer, John J; Weinberger, Miles; Grant, Cameron C; Rubin, Bruce K; Irwin, Richard S

    2017-09-01

    There is no published systematic review on the etiologies of chronic cough or the relationship between OSA and chronic cough in children aged ≤ 14 years. We thus undertook a systematic review based on key questions (KQs) using the Population, Intervention, Comparison, Outcome format. The KQs follow: Among children with chronic (> 4 weeks) cough (KQ 1) are the common etiologies different from those in adults? (KQ 2) Are the common etiologies age or setting dependent, or both? (KQ 3) Is OSA a cause of chronic cough in children? We used the CHEST Expert Cough Panel's protocol and the American College of Chest Physicians (CHEST) methodological guidelines and Grading of Recommendations Assessment, Development, and Evaluation framework. Data from the systematic reviews in conjunction with patients' values and preferences and the clinical context were used to form recommendations. Delphi methodology was used to obtain consensus. Combining KQs 1 and 2, we found moderate-level evidence from 10 prospective studies that the etiologies of cough in children are different from those in adults and are setting dependent. Data from three studies found that common etiologies of cough in young children were different from those in older children. However, data relating sleep abnormalities to chronic cough in children were found only in case studies. There is moderate-quality evidence that common etiologies of chronic cough in children are different from those in adults and are dependent on age and setting. As there are few data relating OSA and chronic cough in children, the panel suggested that these children should be managed in accordance with pediatric sleep guidelines. Copyright © 2017. Published by Elsevier Inc.

  3. Management of Acute Diarrheal Illness During Deployment: A Deployment Health Guideline and Expert Panel Report.

    Science.gov (United States)

    Riddle, Mark S; Martin, Gregory J; Murray, Clinton K; Burgess, Timothy H; Connor, Patrick; Mancuso, James D; Schnaubelt, Elizabeth R; Ballard, Timothy P; Fraser, Jamie; Tribble, David R

    2017-09-01

    Acute diarrheal illness during deployment causes significant morbidity and loss of duty days. Effective and timely treatment is needed to reduce individual, unit, and health system performance impacts. This critical appraisal of the literature, as part of the development of expert consensus guidelines, asked several key questions related to self-care and healthcare-seeking behavior, antibiotics for self-treatment of travelers' diarrhea, what antibiotics/regimens should be considered for treatment of acute watery diarrhea and febrile diarrhea and/or dysentery, and when and what laboratory diagnostics should be used to support management of deployment-related travelers' diarrhea. Studies of acute diarrhea management in military and other travelers were assessed for relevance and quality. On the basis of this critical appraisal, guideline recommendations were developed and graded by the Expert Panel using good standards in clinical guideline development methodology. New definitions for defining the severity of diarrhea during deployment were established. A total of 13 graded recommendations on the topics of prophylaxis, therapy and diagnosis, and follow-up were developed. In addition, four non-graded consensus-based statements were adopted. Successful management of acute diarrheal illness during deployment requires action at the provider, population, and commander levels. Strong evidence supports that single-dose antimicrobial therapy is effective in most cases of moderate to severe acute diarrheal illness during deployment. Further studies are needed to address gaps in available knowledge regarding optimal therapies for treatment, prevention, and laboratory testing of acute diarrheal illness. Reprint & Copyright © 2017 Association of Military Surgeons of the U.S.

  4. Panel data analysis of cardiotocograph (CTG) data.

    Science.gov (United States)

    Horio, Hiroyuki; Kikuchi, Hitomi; Ikeda, Tomoaki

    2013-01-01

    Panel data analysis is a statistical method, widely used in econometrics, which deals with two-dimensional panel data collected over time and over individuals. Cardiotocograph (CTG) which monitors fetal heart rate (FHR) using Doppler ultrasound and uterine contraction by strain gage is commonly used in intrapartum treatment of pregnant women. Although the relationship between FHR waveform pattern and the outcome such as umbilical blood gas data at delivery has long been analyzed, there exists no accumulated FHR patterns from large number of cases. As time-series economic fluctuations in econometrics such as consumption trend has been studied using panel data which consists of time-series and cross-sectional data, we tried to apply this method to CTG data. The panel data composed of a symbolized segment of FHR pattern can be easily handled, and a perinatologist can get the whole FHR pattern view from the microscopic level of time-series FHR data.

  5. Microbiological specifications and testing methods for irradiated food. Report of a panel of experts

    International Nuclear Information System (INIS)

    1970-01-01

    In recent years there has been increased interest in the development of food items processed by means of ionizing radiation, wherever that form of preservation might show advantage over other methods. If this method becomes successful, the various items will be commercially exploited; it would then be convenient to have similar legislation in many countries of the world to control this type of processing and to facilitate international trade. To gather information and suggestions in order to devise legislation on irradiated food, a Joint FAO/IAEA/ WHO Expert Committee on the Technical Basis for Legislation on Irradiated Food was held in Rome on 21-28 April 1964. The Committee's report, 'The technical basis for legislation on irradiated food', was published as FAO Atomic Energy Series No.6 and WHO Technical Series No. 316. The Committee's terms of reference were to consider the available evidence on the effect on food of treatment with ionizing radiation in the context of wholesomeness and safety for consumption. Nutritional aspects were taken into account, but microbiological safety and microbiological methods for irradiated food were excluded since these subjects were believed to be too broad for adequate coverage in the working time available at the meeting. However, realizing the importance of radiation microbiology and the need for guidance in formulating regulations in this field, the committee drafted the following recommendation: 'The methods and standards used to ensure the microbiological safety of the irradiated product should, as a matter of urgency, be subject to review by competent international bodies in order that internationally acceptable methods and standards may be agreed upon'. In response to this recommendation an FAO/IAEA Panel on Microbiological Standards and Testing Methods for Irradiated Food was held in Vienna on 22-26 June 1965, in collaboration with the International Association of Microbiological Societies (IAMS). This was a working

  6. Microbiological specifications and testing methods for irradiated food. Report of a panel of experts

    International Nuclear Information System (INIS)

    1971-01-01

    In recent years there has been increased interest in the development of food items processed by means of ionizing radiation, wherever that form of preservation might show advantage over other methods. If this method becomes successful, the various items will be commercially exploited; it would then be convenient to have similar legislation in many countries of the world to control this type of processing and to facilitate international trade. To gather information and suggestions in order to devise legislation on irradiated food, a Joint FAO/IAEA/ WHO Expert Committee on the Technical Basis for Legislation on Irradiated Food was held in Rome on 21-28 April 1964. The Committee's report, 'The technical basis for legislation on irradiated food', was published as FAO Atomic Energy Series No.6 and WHO Technical Series No. 316. The Committee's terms of reference were to consider the available evidence on the effect on food of treatment with ionizing radiation in the context of wholesomeness and safety for consumption. Nutritional aspects were taken into account, but microbiological safety and microbiological methods for irradiated food were excluded since these subjects were believed to be too broad for adequate coverage in the working time available at the meeting. However, realizing the importance of radiation microbiology and the need for guidance in formulating regulations in this field, the committee drafted the following recommendation: 'The methods and standards used to ensure the microbiological safety of the irradiated product should, as a matter of urgency, be subject to review by competent international bodies in order that internationally acceptable methods and standards may be agreed upon'. In response to this recommendation an FAO/IAEA Panel on Microbiological Standards and Testing Methods for Irradiated Food was held in Vienna on 22-26 June 1965, in collaboration with the International Association of Microbiological Societies (IAMS). This was a working

  7. NTP-CERHR expert panel report on the reproductive anddevelopmental toxicity of hydroxyurea

    Energy Technology Data Exchange (ETDEWEB)

    Liebelt, E.L.; Balk, S.J.; Faber, W.; Fisher, J.W.; Hughes, C.L.; Lanzkron, S.M.; Lewis, K.M.; Marchetti, F.; Mehendale, H.M.; Rogers,J.M.; Shad, A.T.; Skalko, R.G.; Stanek, E.J.

    2007-01-01

    The National Toxicology Program (NTP) and the National Institute of Environmental Health Sciences (NIEHS) established the NTP Center for the Evaluation of Risks to Human Reproduction (CERHR) in June 1998. The purpose of CERHR is to provide timely, unbiased, scientifically sound evaluations of human and experimental evidence for adverse effects on reproduction and development caused by agents to which humans may be exposed. Hydroxyurea was selected for evaluation by a CERHR expert panel because of (1) its increasing use in the treatment of sickle cell disease in children and adults, (2) knowledge that it inhibits DNA synthesis and is cytotoxic, and (3) published evidence of its reproductive and developmental toxicity in rodents. Hydroxyurea is FDA-approved for reducing the frequency of painful crises and the need for blood transfusions in adults with sickle cell anemia who experience recurrent moderate-to-severe crises. Hydroxyurea is used in the treatment of cancer, sickle cell disease, and thalassemia. It is the only treatment for sickle cell disease aside from blood transfusion used in children. Hydroxyurea may be used in the treatment of children and adults with sickle cell disease for an extended period of time or for repeated cycles of therapy. Treatment with hydroxyurea may be associated with cytotoxic and myelosuppressive effects, and hydroxyurea is mutagenic.

  8. The effectiveness of scoliosis screening programs: methods for systematic review and expert panel recommendations formulation

    Science.gov (United States)

    2013-01-01

    Background Literature on scoliosis screening is vast, however because of the observational nature of available data and methodological flaws, data interpretation is often complex, leading to incomplete and sometimes, somewhat misleading conclusions. The need to propose a set of methods for critical appraisal of the literature about scoliosis screening, a comprehensive summary and rating of the available evidence appeared essential. Methods To address these gaps, the study aims were: i) To propose a framework for the assessment of published studies on scoliosis screening effectiveness; ii) To suggest specific questions to be answered on screening effectiveness instead of trying to reach a global position for or against the programs; iii) To contextualize the knowledge through expert panel consultation and meaningful recommendations. The general methodological approach proceeds through the following steps: Elaboration of the conceptual framework; Formulation of the review questions; Identification of the criteria for the review; Selection of the studies; Critical assessment of the studies; Results synthesis; Formulation and grading of recommendations in response to the questions. This plan follows at best GRADE Group (Grades of Recommendation, Assessment, Development and Evaluation) requirements for systematic reviews, assessing quality of evidence and grading the strength of recommendations. Conclusions In this article, the methods developed in support of this work are presented since they may be of some interest for similar reviews in scoliosis and orthopaedic fields. PMID:23883346

  9. Royal Society of Canada expert panel report : environmental and health impacts of Canada's oil sands industry

    International Nuclear Information System (INIS)

    Gosselin, P.; Hrudey, S.E.; Naeth, M.A.; Plourde, A.; Therrien, R.; Laval Univ., Quebec City, PQ; Van Der Kraak, G.; Guelph Univ., ON; Xu, Z.

    2010-12-01

    This expert panel report was commissioned by the Royal Society of Canada to provide a comprehensive evidence-based assessment of the environmental and health impacts of Canada's oil sands industry. The report evaluated the feasibility of land reclamation and the impacts of oil sands contaminants on downstream residents. Health impacts on residents living in the Regional Municipality of Wood Buffalo were assessed, and the impacts on regional water supplies were evaluated. Regional water and ground water quantities were examined, and issues related to tailing pond operations and reclamation were examined. Ambient air quality impacts were assessed, as well as potential impacts of the oil sands industry on greenhouse gas (GHG) emissions. The environmental regulatory performance of operators in the industry was also evaluated. A summary of economic and policy issues related to the industry was also provided. The study identified major gaps in the process of assessment, prevention, and mitigation of the health impacts of oil sands exploitation, as as major indirect health impacts linked to past exploitation activities. 672 refs., 11 tabs., 11 figs. 10 appendices.

  10. WES: A well test analysis expert system

    International Nuclear Information System (INIS)

    Mensch, A.

    1988-06-01

    This report describes part of the development of an expert system in the domain of well-test analysis. This work has been done during my final internship, completed at the Lawrence Berkeley Laboratory. The report is divided in three parts: the first one gives a description of the state of the project at the time I first began to work on it, and raises some problems that have to be solved. The second section shows the results that have been reached, and the last one draws conclusions from these results and proposes extensions that would be useful in the future

  11. Tracheotomy in the intensive care unit: guidelines from a French expert panel.

    Science.gov (United States)

    Trouillet, Jean Louis; Collange, Olivier; Belafia, Fouad; Blot, François; Capellier, Gilles; Cesareo, Eric; Constantin, Jean-Michel; Demoule, Alexandre; Diehl, Jean-Luc; Guinot, Pierre-Grégoire; Jegoux, Franck; L'Her, Erwan; Luyt, Charles-Edouard; Mahjoub, Yazine; Mayaux, Julien; Quintard, Hervé; Ravat, François; Vergez, Sebastien; Amour, Julien; Guillot, Max

    2018-03-15

    Tracheotomy is widely used in intensive care units, albeit with great disparities between medical teams in terms of frequency and modality. Indications and techniques are, however, associated with variable levels of evidence based on inhomogeneous or even contradictory literature. Our aim was to conduct a systematic analysis of the published data in order to provide guidelines. We present herein recommendations for the use of tracheotomy in adult critically ill patients developed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) method. These guidelines were conducted by a group of experts from the French Intensive Care Society (Société de Réanimation de Langue Française) and the French Society of Anesthesia and Intensive Care Medicine (Société Francaise d'Anesthésie Réanimation) with the participation of the French Emergency Medicine Association (Société Française de Médecine d'Urgence), the French Society of Otorhinolaryngology. Sixteen experts and two coordinators agreed to consider questions concerning tracheotomy and its practical implementation. Five topics were defined: indications and contraindications for tracheotomy in intensive care, tracheotomy techniques in intensive care, modalities of tracheotomy in intensive care, management of patients undergoing tracheotomy in intensive care, and decannulation in intensive care. The summary made by the experts and the application of GRADE methodology led to the drawing up of 8 formal guidelines, 10 recommendations, and 3 treatment protocols. Among the 8 formal guidelines, 2 have a high level of proof (Grade 1+/-) and 6 a low level of proof (Grade 2+/-). For the 10 recommendations, GRADE methodology was not applicable and instead 10 expert opinions were produced.

  12. Best Practices for Prescription Drug Monitoring Programs in the Emergency Department Setting: Results of an Expert Panel.

    Science.gov (United States)

    Greenwood-Ericksen, Margaret B; Poon, Sabrina J; Nelson, Lewis S; Weiner, Scott G; Schuur, Jeremiah D

    2016-06-01

    Prescription drug monitoring programs are generally underused in emergency departments (ED) and nationwide enrollment is low among emergency physicians. We aimed to develop consensus recommendations for prescription drug monitoring program policy and design to optimize their functionality and use in the ED. We assembled a technical expert panel with key stakeholders in emergency medicine, public health, and public policy. The panel included academic and community-based emergency physicians, a pediatric fellowship-trained emergency physician, a medical toxicologist, a public health expert, a patient advocate, a legal expert, and two state prescription drug monitoring program administrators. We compiled prescription drug monitoring program policies and characteristics and organized them into domains based on user-prescription drug monitoring program interaction. The panel convened for 3 rounds in which the policies and characteristics were introduced, discussed, and modified in an iterative fashion to achieve consensus. The process yielded policy recommendations and design features, with majority agreement. The panel made 18 policy recommendations within these main themes: enrollment should be mandatory, with an automatic process to mitigate the workload; registration should be open to all prescribers; delegates should have access to prescription drug monitoring program to alleviate work flow burdens; prescription drug monitoring program data should be pushed into hospital electronic health records; prescription drug monitoring program review should be mandatory for patients receiving opioid prescriptions and based on objective criteria; the prescription drug monitoring program content should be standardized and updated in a timely manner; and states should encourage interstate data sharing. An expert panel identified 18 recommendations that can be used by states and policymakers to improve prescription drug monitoring program design to increase use in the ED

  13. Leveraging geospatial data, technology, and methods for improving the health of communities: priorities and strategies from an expert panel convened by the CDC.

    Science.gov (United States)

    Elmore, Kim; Flanagan, Barry; Jones, Nicholas F; Heitgerd, Janet L

    2010-04-01

    In 2008, CDC convened an expert panel to gather input on the use of geospatial science in surveillance, research and program activities focused on CDC's Healthy Communities Goal. The panel suggested six priorities: spatially enable and strengthen public health surveillance infrastructure; develop metrics for geospatial categorization of community health and health inequity; evaluate the feasibility and validity of standard metrics of community health and health inequities; support and develop GIScience and geospatial analysis; provide geospatial capacity building, training and education; and, engage non-traditional partners. Following the meeting, the strategies and action items suggested by the expert panel were reviewed by a CDC subcommittee to determine priorities relative to ongoing CDC geospatial activities, recognizing that many activities may need to occur either in parallel, or occur multiple times across phases. Phase A of the action items centers on developing leadership support. Phase B focuses on developing internal and external capacity in both physical (e.g., software and hardware) and intellectual infrastructure. Phase C of the action items plan concerns the development and integration of geospatial methods. In summary, the panel members provided critical input to the development of CDC's strategic thinking on integrating geospatial methods and research issues across program efforts in support of its Healthy Communities Goal.

  14. The importance of assessment and management of morning stiffness in Asian patients with rheumatoid arthritis: Recommendations from an expert panel.

    Science.gov (United States)

    Mok, Chi Chiu; Cha, Hoon Suk; Hidayat, Rudy; Nguyen, Lan Thi Ngoc; Perez, Emmanuel C; Ramachandran, Raveendran; Tsay, Gregory J; Yoo, Dae Hyun

    2016-01-01

    In patients with rheumatoid arthritis (RA), morning stiffness is linked more to functional disability and pain than disease activity, as assessed by joint counts and markers of inflammation. As part of the Asia Pacific Morning Stiffness in Rheumatoid Arthritis Expert Panel, a group of eight rheumatologists met to formulate consensus points and develop recommendations for the assessment and management of morning stiffness in RA. On the basis of a systematic literature review and expert opinion, a panel of Asian rheumatologists formulated recommendations for the assessment and medical treatment of RA. The panel agreed upon 10 consensus statements on morning stiffness, its assessment and treatment. Specifically, the panel recommended that morning stiffness, pain and impaired morning function should be routinely assessed in clinical practice. Although there are currently no validated tools for these parameters, they should be assessed as part of the patients' reported outcomes in RA. The panel also agreed on the benefits of low-dose glucocorticoids in RA, particularly for the improvement of morning stiffness. These recommendations serve to guide rheumatologists and other stakeholders on the assessment and management of morning stiffness, and help implement the treat-to-target principle in the management of RA. © 2015 Asia Pacific League of Associations for Rheumatology and Wiley Publishing Asia Pty Ltd.

  15. Recommendations for radioembolisation after liver surgery using yttrium-90 resin microspheres based on a survey of an international expert panel

    Energy Technology Data Exchange (ETDEWEB)

    Samim, Morsal [University Medical Center Utrecht, Department of Surgery, Utrecht (Netherlands); University Medical Center Utrecht, Department of Radiology and Nuclear Medicine, Utrecht (Netherlands); Veenendaal, Linde M. van; Braat, Manon N.G.J.A.; Hoven, Andor F. van den; Bosch, Maurice A.A.J. van den; Lam, Marnix G.E.H. [University Medical Center Utrecht, Department of Radiology and Nuclear Medicine, Utrecht (Netherlands); Hillegersberg, Richard van [University Medical Center Utrecht, Department of Surgery, Utrecht (Netherlands); Sangro, Bruno [Clinica Universidad de Navarra-IDISNA and CIBEREHD, Liver Unit, Pamplona (Spain); Kao, Yung Hsiang [Cabrini Hospital, Department of Nuclear Medicine, Melbourne (Australia); Liu, Dave [Vancouver General Hospital, University of British Columbia, Department of Radiology, Vancouver, British Columbia (Canada); Louie, John D.; Sze, Daniel Y. [Stanford University Medical Center, Division of Interventional Radiology, Stanford (United States); Rose, Steven C. [University of California, Department of Radiology, San Diego (United States); Brown, Daniel B. [Vanderbilt University, Medical Center North, Department of Radiology, Nashville (United States); Ahmadzadehfar, Hojjat [University Hospital Bonn, Department of Nuclear Medicine, Bonn (Germany); Kim, Edward [Icahn School of Medicine at Mount Sinai, Division of Vascular and Interventional Radiology, New York (United States)

    2017-12-15

    Guidelines on how to adjust activity in patients with a history of liver surgery who are undergoing yttrium-90 radioembolisation ({sup 90}Y-RE) are lacking. The aim was to study the variability in activity prescription in these patients, between centres with extensive experience using resin microspheres {sup 90}Y-RE, and to draw recommendations on activity prescription based on an expert consensus. The variability in activity prescription between centres was investigated by a survey of international experts in the field of {sup 90}Y-RE. Six representative post-surgical patients (i.e. comparable activity prescription, different outcome) were selected. Information on patients' disease characteristics and data needed for activity calculation was presented to the expert panel. Reported was the used method for activity prescription and whether, how and why activity reduction was found indicated. Ten experts took part in the survey. Recommendations on activity reduction were highly variable between the expert panel. The median intra-patient range was 44 Gy (range 18-55 Gy). Reductions in prescribed activity were recommended in 68% of the cases. In consensus, a maximum D{sub Target} of 50 Gy was recommended. With a current lack of guidelines, large variability in activity prescription in post-surgical patients undergoing {sup 90}Y-RE exists. In consensus, D{sub Target} ≤50 Gy is recommended. (orig.)

  16. High-level panel of experts to recommend future course for IAEA

    International Nuclear Information System (INIS)

    2008-01-01

    Full text: A high-level panel of experts, charged by IAEA Director General Mohamed ElBaradei with making an assessment of the challenges the IAEA will face up to the year 2020 and beyond, holds its initial meetings in Vienna 25 - 26 February. The Commission of Eminent Persons, under the chairmanship of former Mexican President, Ernesto Zedillo, includes 18 senior international figures, and will make recommendations on ways in which the Agency can prepare to meet its expanding workload. The Commission's findings are intended to stimulate further discussion - among Member States, between the States and the IAEA Secretariat, and by the broader public - about the future of the Agency and how best it can contribute in the coming years to the efforts of the international community to achieve development, peace and security, said IAEA Director General Mohamed ElBaradei. The members of the Commission are: Dr. Ernesto Zedillo (Chairman) - Director of the Yale Center for the Study of Globalization; former President of Mexico; Ambassador Oluyemi Adeniji - former Minister of Foreign Affairs, Nigeria; former Member of the Board of Governors of the IAEA; Lakhdar Brahimi - Visiting Scholar at the Institute for Advanced Study, Princeton, New Jersey; former UN Under-Secretary-General, Special Adviser to the Secretary-General, and Chair of the Panel on UN Peace Operations; Lajos Bokros - Professor of Economics and Public Policy, and Chief Operating Officer of the Central European University, Budapest, Hungary; Dr. Rajagopala Chidambaram - Principal Scientific Advisor to the Government of India; DAE Homi Bhabha Professor; former Chairman of the Atomic Energy Commission; former Director of the Bhabha Atomic Research Centre; Senator Lamberto Dini - President of the Foreign Affairs Committee of the Italian Senate; Gareth Evans - President and Chief Executive Officer, International Crisis Group, Brussels; former Australian Foreign Minister 1988-1998; former Minister for Resources and

  17. Targeted temperature management in the ICU: guidelines from a French expert panel.

    Science.gov (United States)

    Cariou, Alain; Payen, Jean-François; Asehnoune, Karim; Audibert, Gerard; Botte, Astrid; Brissaud, Olivier; Debaty, Guillaume; Deltour, Sandrine; Deye, Nicolas; Engrand, Nicolas; Francony, Gilles; Legriel, Stéphane; Levy, Bruno; Meyer, Philippe; Orban, Jean-Christophe; Renolleau, Sylvain; Vigue, Bernard; De Saint Blanquat, Laure; Mathien, Cyrille; Velly, Lionel

    2017-12-01

    Over the recent period, the use of induced hypothermia has gained an increasing interest for critically ill patients, in particular in brain-injured patients. The term "targeted temperature management" (TTM) has now emerged as the most appropriate when referring to interventions used to reach and maintain a specific level temperature for each individual. TTM may be used to prevent fever, to maintain normothermia, or to lower core temperature. This treatment is widely used in intensive care units, mostly as a primary neuroprotective method. Indications are, however, associated with variable levels of evidence based on inhomogeneous or even contradictory literature. Our aim was to conduct a systematic analysis of the published data in order to provide guidelines. We present herein recommendations for the use of TTM in adult and paediatric critically ill patients developed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) method. These guidelines were conducted by a group of experts from the French Intensive Care Society (Société de Réanimation de Langue Française [SRLF]) and the French Society of Anesthesia and Intensive Care Medicine (Société Francaise d'Anesthésie Réanimation [SFAR]) with the participation of the French Emergency Medicine Association (Société Française de Médecine d'Urgence [SFMU]), the French Group for Pediatric Intensive Care and Emergencies (Groupe Francophone de Réanimation et Urgences Pédiatriques [GFRUP]), the French National Association of Neuro-Anesthesiology and Critical Care (Association Nationale de Neuro-Anesthésie Réanimation Française [ANARLF]), and the French Neurovascular Society (Société Française Neurovasculaire [SFNV]). Fifteen experts and two coordinators agreed to consider questions concerning TTM and its practical implementation in five clinical situations: cardiac arrest, traumatic brain injury, stroke, other brain injuries, and shock. This resulted in 30 recommendations

  18. Creation and Implementation of an Outpatient Pathway for Atrial Fibrillation in the Emergency Department Setting: Results of an Expert Panel.

    Science.gov (United States)

    Baugh, Christopher W; Clark, Carol L; Wilson, Jason W; Stiell, Ian G; Kocheril, Abraham G; Luck, Krista K; Myers, Troy D; Pollack, Charles V; Roumpf, Steven K; Tomassoni, Gery F; Williams, James M; Patel, Brian B; Wu, Fred; Pines, Jesse M

    2018-03-10

    Atrial fibrillation and flutter (AF) is a common condition among emergency department (ED) patients in the United States. Traditionally, ED care for primary complaints related to AF focus on rate control, and patients are often admitted to an inpatient setting for further care. Inpatient care may include further telemetry monitoring and diagnostic testing, rhythm control, a search for identification of AF etiology, and stroke prophylaxis. However, many patients are eligible for safe and effective outpatient management pathways. They are widely used in Canada and other countries but less widely adopted in the United States. In this project, we convened an expert panel to create a practical framework for the process of creating, implementing, and maintaining an outpatient AF pathway for emergency physicians to assess and treat AF patients, safely reduce hospitalization rates, ensure appropriate stroke prophylaxis, and effectively transition patients to longitudinal outpatient treatment settings from the ED and/or observation unit. To support local pathway creation, the panel also reached agreement on a protocol development plan, a sample pathway, consensus recommendations for pathway components, sample pathway metrics, and a structured literature review framework using a modified Delphi technique by a technical expert panel of emergency medicine, cardiology, and other stakeholder groups. © 2018 by the Society for Academic Emergency Medicine.

  19. Identification and management of comorbidity in psoriatic arthritis: evidence- and expert-based recommendations from a multidisciplinary panel from Spain.

    Science.gov (United States)

    Torre-Alonso, Juan Carlos; Carmona, Loreto; Moreno, Mireia; Galíndez, Eva; Babío, Jesús; Zarco, Pedro; Linares, Luis; Collantes-Estevez, Eduardo; Barrial, Manuel Fernández; Hermosa, Juan Carlos; Coto, Pablo; Suárez, Carmen; Almodóvar, Raquel; Luelmo, Jesús; Castañeda, Santos; Gratacós, Jordi

    2017-08-01

    The objective is to establish recommendations, based on evidence and expert opinion, for the identification and management of comorbidities in patients with psoriatic arthritis (PsA). The following techniques were applied: discussion group, systematic review, and Delphi survey for agreement. A panel of professionals from four specialties defined the users, the sections of the document, possible recommendations, and what systematic reviews should be performed. A second discussion was held with the results of the systematic reviews. Recommendations were formulated in the second meeting and voted online from 1 (total disagreement) to 10 (total agreement). Agreement was considered if at least 70% voted ≥7. The level of evidence and grade of recommendation were assigned using the Oxford Centre for Evidence-Based Medicine guidance. The full document was critically appraised by the experts, and the project was supervised at all times by a methodologist. In a final step, the document was reviewed and commented by a patient and a health management specialist. Fourteen recommendations were produced, together with a checklist to facilitate the implementation. The items with the largest support from evidence were those related to cardiovascular disease and risk factors. The panel recommends paying special attention to obesity, smoking, and alcohol consumption, as they are all modifiable factors with an impact on treatment response or complications of PsA. Psychological and organizational aspects were also deemed important. We herein suggest practical recommendations for the management of comorbidities in PsA based on evidence and expert opinion.

  20. Seismic hazard analysis. Volume 5. Review panel, Ground Motion Panel, and feedback results

    Energy Technology Data Exchange (ETDEWEB)

    Bernreuter, D. L.

    1981-08-01

    The Site Specific Spectra Project (SSSP) was a multi-year study funded by the US Nuclear Regulatory Commission to provide estimates of the seismic hazards at a number of nuclear power plant sites in the Eastern US. A key element of our approach was the Peer Review Panel, which we formed in order to ensure that our use of expert opinion was reasonable. We discuss the Peer Review Panel results and provide the complete text of each member's report. In order to improve the ground motion model, an Eastern US Ground Motion Model Panel was formed. In Section 4 we tabulate the responses from the panel members to our feedback questionnaire and discuss the implications of changes introduced by them. We conclude that the net difference in seismic hazard values from those presented in Volume 4 is small and does not warrant a reanalysis. 22 figs.

  1. A post hoc study on gene panel analysis for the diagnosis of dystonia.

    Science.gov (United States)

    van Egmond, Martje E; Lugtenberg, Coen H A; Brouwer, Oebele F; Contarino, Maria Fiorella; Fung, Victor S C; Heiner-Fokkema, M Rebecca; van Hilten, Jacobus J; van der Hout, Annemarie H; Peall, Kathryn J; Sinke, Richard J; Roze, Emmanuel; Verschuuren-Bemelmans, Corien C; Willemsen, Michel A; Wolf, Nicole I; Tijssen, Marina A; de Koning, Tom J

    2017-04-01

    Genetic disorders causing dystonia show great heterogeneity. Recent studies have suggested that next-generation sequencing techniques such as gene panel analysis can be effective in diagnosing heterogeneous conditions. The objective of this study was to investigate whether dystonia patients with a suspected genetic cause could benefit from the use of gene panel analysis. In this post hoc study, we describe gene panel analysis results of 61 dystonia patients (mean age, 31 years; 72% young onset) in our tertiary referral center. The panel covered 94 dystonia-associated genes. As comparison with a historic cohort was not possible because of the rapidly growing list of dystonia genes, we compared the diagnostic workup with and without gene panel analysis in the same patients. The workup without gene panel analysis (control group) included theoretical diagnostic strategies formulated by independent experts in the field, based on detailed case descriptions. The primary outcome measure was diagnostic yield; secondary measures were cost and duration of diagnostic workup. Workup with gene panel analysis led to a confirmed molecular diagnosis in 14.8%, versus 7.4% in the control group (P = 0.096). In the control group, on average 3 genes/case were requested. The mean costs were lower in the gene panel analysis group (€1822/case) than in the controls (€2660/case). The duration of the workup was considerably shorter with gene panel analysis (28 vs 102 days). Gene panel analysis facilitates molecular diagnosis in complex cases of dystonia, with a good diagnostic yield (14.8%), a quicker diagnostic workup, and lower costs, representing a major improvement for patients and their families. © 2016 International Parkinson and Movement Disorder Society. © 2017 International Parkinson and Movement Disorder Society.

  2. Highlights of the Report of the Expert Panel on Blood Cholesterol Levels in Children and Adolescents.

    Science.gov (United States)

    National Heart, Lung, and Blood Inst. (DHHS/NIH), Bethesda, MD.

    Studies have shown that high blood cholesterol levels play a role in the development of coronary heart disease in adults, and that the process leading to atherosclerosis begins in childhood. To address the problem of high cholesterol levels in children, the Panel on Blood Cholesterol Levels recommends complementary approaches for individuals and…

  3. Expert Panel Recommendations for Hanford Double-Shell Tank Life Extension

    International Nuclear Information System (INIS)

    Stewart, Charles W; Bush, Spencer H; Berman, Herbert Stanton; Czajkowski, Carl J; Divine, James R; Posakony, Gerald J; Johnson, A B; Elmore, Monte R; Reynolds, D A; Anantatmula, Ramamohan P; Sindelar, Robert L; Zapp, Philip E

    2001-01-01

    Expert workshops were held in Richland in May 2001 to review the Hanford Double-Shell Tank Integrity Project and make recommendations to extend the life of Hanford's double-shell waste tanks. The workshop scope was limited to corrosion of the primary tank liner, and the main areas for review were waste chemistry control, tank inspection, and corrosion monitoring. Participants were corrosion experts from Hanford, Savannah River Site, Brookhaven National Lab., Pacific Northwest National Lab., and several consultants. This report describes the current state of the three areas of the program, the final recommendations of the workshop, and the rationale for their selection

  4. Expert Panel Recommendations for Hanford Double-Shell Tank Life Extension

    Energy Technology Data Exchange (ETDEWEB)

    Stewart, Charles W; Bush, Spencer H; Berman, Herbert Stanton; Czajkowski, Carl J; Divine, James R; Posakony, Gerald J; Johnson, A B; Elmore, Monte R; Reynolds, D A; Anantatmula, Ramamohan P; Sindelar, Robert L; Zapp, Philip E

    2001-06-29

    Expert workshops were held in Richland in May 2001 to review the Hanford Double-Shell Tank Integrity Project and make recommendations to extend the life of Hanford's double-shell waste tanks. The workshop scope was limited to corrosion of the primary tank liner, and the main areas for review were waste chemistry control, tank inspection, and corrosion monitoring. Participants were corrosion experts from Hanford, Savannah River Site, Brookhaven National Lab., Pacific Northwest National Lab., and several consultants. This report describes the current state of the three areas of the program, the final recommendations of the workshop, and the rationale for their selection.

  5. Creating a roadmap for delivering gender-sensitive comprehensive care for women Veterans: results of a national expert panel.

    Science.gov (United States)

    deKleijn, Miriam; Lagro-Janssen, Antoine L M; Canelo, Ismelda; Yano, Elizabeth M

    2015-04-01

    Women Veterans are a significant minority of users of the VA healthcare system, limiting provider and staff experience meeting their needs in environments historically designed for men. The VA is nonetheless committed to ensuring that women Veterans have access to comprehensive care in environments sensitive to their needs. We sought to determine what aspects of care need to be tailored to the needs of women Veterans in order for the VA to deliver gender-sensitive comprehensive care. Modified Delphi expert panel process. Eleven clinicians and social scientists with expertise in women's health, primary care, and mental health. Importance of tailoring over 100 discrete aspects of care derived from the Institute of Medicine's definition of comprehensive care and literature-based domains of sex-sensitive care on a 5-point scale. Panelists rated over half of the aspects of care as very-to-extremely important (median score 4+) to tailor to the needs of women Veterans. The panel arrived at 14 priority recommendations that broadly encompassed the importance of (1) the design/delivery of services sensitive to trauma histories, (2) adapting to women's preferences and information needs, and (3) sex awareness and cultural transformation in every facet of VA operations. We used expert panel methods to arrive at consensus on top priority recommendations for improving delivery of sex-sensitive comprehensive care in VA settings. Accomplishment of their breadth will require national, regional, and local strategic action and multilevel stakeholder engagement, and will support VA's national efforts at improving customer service for all Veterans.

  6. Heart Rhythm Monitoring in the Constellation Lunar and Launch/Landing EVA Suit: Recommendations from an Expert Panel

    Science.gov (United States)

    Scheuring, Richard A.; Hamilton, Doug; Jones, Jeffrey A.; Alexander, David

    2009-01-01

    There are currently several physiological monitoring requirements for EVA in the Human-Systems Interface Requirements (HSIR) document. There are questions as to whether the capability to monitor heart rhythm in the lunar surface space suit is a necessary capability for lunar surface operations. Similarly, there are questions as to whether the capability to monitor heart rhythm during a cabin depressurization scenario in the launch/landing space suit is necessary. This presentation seeks to inform space medicine personnel of recommendations made by an expert panel of cardiovascular medicine specialists regarding in-suit ECG heart rhythm monitoring requirements during lunar surface operations. After a review of demographic information and clinical cases and panel discussion, the panel recommended that ECG monitoring capability as a clinical tool was not essential in the lunar space suit; ECG monitoring was not essential in the launch/landing space suit for contingency scenarios; the current hear rate monitoring capability requirement for both launch/landing and lunar space suits should be maintained; lunar vehicles should be required to have ECG monitoring capability with a minimum of 5-lead ECG for IVA medical assessments; and, exercise stress testing for astronaut selection and retention should be changed from the current 85% maximum heart rate limit to maximal, exhaustive 'symptom-limited' testing to maximize diagnostic utility as a screening tool for evaluating the functional capacity of astronauts and their cardiovascular health.

  7. Expert panel answers questions for Super Safety and Health Day at KSC.

    Science.gov (United States)

    1999-01-01

    A panel of NASA and contractor senior staff, plus officers from the 45th Space Wing, discuss safety- and health-related concerns in front of an audience of KSC employees, as part of Super Safety and Health Day. Moderating at the podium is Loren Shriver, deputy director for Launch & Payload Processing. Seated left to right are Burt Summerfield, associate director of the Biomedical Office; Colonel William S. Swindling, commander, 45th Medical Group, Patrick Air Force Base, Fla.; Ron Dittemore, manager, Space Shuttle Programs, Johnson Space Center; Roy Bridges, Center Director; Col. Tom Deppe, vice commander, 45th Space Wing, Patrick Air Force Base; Jim Schoefield, program manager, Payload Ground Operations, Boeing; Bill Hickman, program manager, Space Gateway Support; and Ed Adamek, vice president and associate program manager for Ground Operations, United Space Alliance. The panel was one of the presentations during KSC's second annual day-long dedication to safety. Most normal work activities were suspended to allow personnel to attend related activities. The theme, 'Safety and Health Go Hand in Hand,' emphasized KSC's commitment to place the safety and health of the public, astronauts, employees and space-related resources first and foremost. Events also included a keynote address, vendor exhibits, and safety training in work groups. The keynote address and panel session were also broadcast internally over NASA television.

  8. Studying disagreements among retinal experts through image analysis.

    Science.gov (United States)

    Quellec, Gwénolé; Lamard, Mathieu; Cochener, Béatrice; Droueche, Zakarya; Lay, Bruno; Chabouis, Agnès; Roux, Christian; Cazuguel, Guy

    2012-01-01

    In recent years, many image analysis algorithms have been presented to assist Diabetic Retinopathy (DR) screening. The goal was usually to detect healthy examination records automatically, in order to reduce the number of records that should be analyzed by retinal experts. In this paper, a novel application is presented: these algorithms are used to 1) discover image characteristics that sometimes cause an expert to disagree with his/her peers and 2) warn the expert whenever these characteristics are detected in an examination record. In a DR screening program, each examination record is only analyzed by one expert, therefore analyzing disagreements among experts is challenging. A statistical framework, based on Parzen-windowing and the Patrick-Fischer distance, is presented to solve this problem. Disagreements among eleven experts from the Ophdiat screening program were analyzed, using an archive of 25,702 examination records.

  9. Modelling drug-related morbidity in Sweden using an expert panel of physicians

    OpenAIRE

    Hakkarainen, Katja M; Alström, Daniel; Hägg, Staffan; Carlsten, Anders; Gyllensten, Hanna

    2012-01-01

    PURPOSE: In modelling studies using pharmacists' opinions, drug-related morbidity (DRM) and preventable DRM have been more common than in observational studies, and the resulting costs are extensive. Modelling studies' estimates may vary depending on informants' profession. The purpose of this modelling study was to estimate the proportion of patients with DRM and preventable DRM and the cost of illness (COI) of DRM in Sweden based on physicians' expert opinions. METHOD: A conceptual model of...

  10. Expert systems for assisting the analysis of hazards

    International Nuclear Information System (INIS)

    Evrard, J.M.; Martinez, J.M.; Souchet, Y.

    1990-01-01

    The advantage of applying expert systems in the analysis of safety in the operation of nuclear power plants is discussed. Expert systems apply a method based on a common representation of nuclear power plants. The main steps of the method are summarized. The applications given concern in the following fields: the analysis of hazards in the electric power supplies of a gas-graphite power plant; the evaluation of the availability of safety procedures in a PWR power plant; the search for the sources of leakage in a PWR power plant. The analysis shows that expert systems are a powerful tool in the study of safety of nuclear power plants [fr

  11. Biofuels and Food Security. A report by the High Level Panel of Experts on Food Security and Nutrition

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2013-06-15

    In October 2011, the UN Committee on World Food Security (CFS) recommended a ''review of biofuels policies -- where applicable and if necessary -- according to balanced science-based assessments of the opportunities and challenges that they may represent for food security so that biofuels can be produced where it is socially, economically and environmentally feasible to do so''. In line with this, the CFS requested the HLPE (High Level Panel of Experts) to ''conduct a science-based comparative literature analysis taking into consideration the work produced by the FAO and Global Bioenergy Partnership (GBEP) of the positive and negative effects of biofuels on food security''. Recommendations from the report include the following. Food security policies and biofuel policies cannot be separated because they mutually interact. Food security and the right to food should be priority concerns in the design of any biofuel policy. Governments should adopt the principle: biofuels shall not compromise food security and therefore should be managed so that food access or the resources necessary for the production of food, principally land, biodiversity, water and labour are not put at risk. The CFS should undertake action to ensure that this principle is operable in the very varied contexts in which all countries find themselves. Given the trend to the emergence of a global biofuels market, and a context moving from policy-driven to market-driven biofuels, there is an urgent need for close and pro-active coordination of food security, biofuel/bioenergy policies and energy policies, at national and international levels, as well as rapid response mechanisms in case of crisis. There is also an urgent need to create an enabling, responsible climate for food and non-food investments compatible with food security. The HLPE recommends that governments adopt a coordinated food security and energy security strategy, which would require articulation

  12. Initial Approach to Childhood Obesity in Spain. A Multisociety Expert Panel Assessment.

    Science.gov (United States)

    Vilallonga, Ramon; Moreno Villares, José Manuel; Yeste Fernández, Diego; Sánchez Santos, Raquel; Casanueva Freijo, Felipe; Santolaya Ochando, Francisco; Leal Hernando, Nuria; Lecube Torelló, Albert; Castaño González, Luis Antonio; Feliu, Albert; Lopez-Nava, Gontrand; Frutos, Dolores; Torres Garcia, Antonio J; Ruiz de Adana, Juan Carlos

    2017-04-01

    In recent years, the incidence of childhood obesity in Europe, and Spain in particular, has increased dramatically. Bariatric surgery could play a major role in treating of adolescents with severe obesity. However, no specific guidelines for bariatric surgery currently exist in Spain. The Board of the Spanish Society for Obesity Surgery and Metabolic Diseases (SECO) proposed a study of childhood obesity by using the Delphi method. This prospective study involved 60 experts from nine national societies. Each society leader recruited experts from their society in obesity-related fields. Two online questionnaires were taken, and consensus on guidelines for various obesity treatments was reached according to the percentage of answers in favor or against inclusion of a given guideline. Based on these results, preoperative, surgical management and follow-up of childhood obesity management among others were analyzed. The survey results indicated significant concern among all societies regarding obesity. There was strong consensus with regard to adolescents and obesity, medical treatment, dietary recommendations, environmental and social factors, and goals for adolescents with obesity. Consensus on the use of intragastric balloons and other techniques was not reached. However, biliopancreatic diversion was rejected as a primary treatment, and mandatory psychological/psychiatric assessment was agreed upon. Inclusion criteria accepted were similar to those for adults with the exception of surgery in those with a body mass index <40. Spanish obesity-related societies are aware of the societal problem of childhood obesity. Multisociety development of national approaches may arise from consensus-building studies among specialists.

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

    Directory of Open Access Journals (Sweden)

    Kyungtae Kim

    2018-03-01

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

  14. Identifying locally advanced basal cell carcinoma eligible for treatment with vismodegib: an expert panel consensus.

    Science.gov (United States)

    Peris, Ketty; Licitra, Lisa; Ascierto, Paolo A; Corvò, Renzo; Simonacci, Marco; Picciotto, Franco; Gualdi, Giulio; Pellacani, Giovanni; Santoro, Armando

    2015-01-01

    Basal cell carcinoma (BCC) is the most common skin cancer worldwide. Most occur on the head and neck, where cosmetic and functional outcomes are critical. BCC can be locally destructive if not diagnosed early and treated appropriately. Surgery is the treatment of choice for the majority of high-risk lesions. Aggressive, recurrent or unresectable tumors can be difficult to manage. Until recently, no approved systemic therapy was available for locally advanced or metastatic BCC inappropriate for surgery or radiotherapy. Vismodegib provides a systemic treatment option. However, a consensus definition of advanced BCC is lacking. A multidisciplinary panel with expertise in oncology, dermatology, dermatologic surgery and radiation oncology proposes a consensus definition based on published evidence and clinical experience.

  15. Final report of the Cosmetic Ingredient Review Expert Panel amended safety assessment of Calendula officinalis-derived cosmetic ingredients.

    Science.gov (United States)

    Andersen, F Alan; Bergfeld, Wilma F; Belsito, Donald V; Hill, Ronald A; Klaassen, Curtis D; Liebler, Daniel C; Marks, James G; Shank, Ronald C; Slaga, Thomas J; Snyder, Paul W

    2010-01-01

    Calendula officinalis extract, C officinalis flower, C officinalis flower extract, C officinalis flower oil, and C officinalis seed oil are cosmetic ingredients derived from C officinalis. These ingredients may contain minerals, carbohydrates, lipids, phenolic acids, flavonoids, tannins, coumarins, sterols and steroids, monoterpenes, sesquiterpenes, triterpenes, tocopherols, quinones, amino acids, and resins. These ingredients were not significantly toxic in single-dose oral studies using animals. The absence of reproductive/developmental toxicity was inferred from repeat-dose studies of coriander oil, with a similar composition. Overall, these ingredients were not genotoxic. They also were not irritating, sensitizing, or photosensitizing in animal or clinical tests but may be mild ocular irritants. The Cosmetic Ingredient Review (CIR) Expert Panel concluded that these ingredients are safe for use in cosmetics in the practices of use and concentration given in this amended safety assessment.

  16. Probability encoding of hydrologic parameters for basalt: Elicitation of expert opinions from a panel of five consulting hydrologists

    International Nuclear Information System (INIS)

    Davis, J.D.

    1984-01-01

    The Columbia River Basalts Underlying the Hanford Site in Washington State are being considered as a possible location for a geologic repository for high-level nuclear waste. To investigate the feasibility of a repository at this site, the hydrologic parameters of the site must be evaluated. Among hydrologic parameters of particular interest are the effective porosity of the Cohassett flow top and flow interior and the vertical-to-horizontal hydraulic conductivity, or anisotropy ratio, of the Cohassett flow interior. Site-specific data for these hydrologic parameters are currently inadequate. To obtain credible, auditable, and independently derived estimates of the specified hydrologic parameters for the purpose of preliminary assessment of candidate repository performance, a panel of five nationally recognized hydrologists was assembled. Their expert judgments were quantified during two rounds of Delphi process by means of a probability encoding method developed to estimate the probability distributions of the selected hydrologic variables. 210 refs., 12 figs., 5 tabs

  17. The Pathway to a Safe and Effective Spaceflight Medication Formulary: Expert Review Panel Recommendations

    Science.gov (United States)

    Daniels, V. R.; Bayuse, T. M.; Mulcahy, R. A.; McGuire, R. K. M.; Antonsen, E. L.

    2018-01-01

    Exploration spaceflight poses several challenges to the provision of a comprehensive medication formulary. This formulary must accommodate the size and space limitations of the spacecraft, while addressing individual medication needs and preferences of the crew, consequences of a degrading inventory over time, the inability to resupply used or expired medications, and the need to forecast the best possible medication candidates to treat conditions that may occur. The Exploration Medical Capability (ExMC) Element's Pharmacy Project Team has developed a research plan (RP) that is focused on evidence-based models and theories as well as new diagnostic tools, treatments, or preventive measures aimed to ensure an available, safe, and effective pharmacy sufficient to manage potential medical threats during exploration spaceflight. Here, we will discuss the ways in which the ExMC Pharmacy Project Team pursued expert evaluation and guidance, and incorporated acquired insight into an achievable research pathway, reflected in the revised RP.

  18. Meeting the public health challenge of protecting private wells: Proceedings and recommendations from an expert panel workshop

    Energy Technology Data Exchange (ETDEWEB)

    Fox, Mary A., E-mail: mfox9@jhu.edu [Department of Health Policy and Management, Bloomberg School of Public Health, Johns Hopkins University, 624 North Broadway, Room 407, Baltimore, MD 21205 (United States); Risk Sciences and Public Policy Institute, Bloomberg School of Public Health, Johns Hopkins University, 624 North Broadway, Room 429, Baltimore, MD 21205 (United States); Nachman, Keeve E. [Department of Health Policy and Management, Bloomberg School of Public Health, Johns Hopkins University, 624 North Broadway, Room 407, Baltimore, MD 21205 (United States); Risk Sciences and Public Policy Institute, Bloomberg School of Public Health, Johns Hopkins University, 624 North Broadway, Room 429, Baltimore, MD 21205 (United States); Center for a Livable Future, Johns Hopkins University, 615 North Wolfe Street, Room W7010, Baltimore, MD 21205 (United States); Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205 (United States); Anderson, Breeana [Risk Sciences and Public Policy Institute, Bloomberg School of Public Health, Johns Hopkins University, 624 North Broadway, Room 429, Baltimore, MD 21205 (United States); Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205 (United States); Lam, Juleen [Department of Health Policy and Management, Bloomberg School of Public Health, Johns Hopkins University, 624 North Broadway, Room 407, Baltimore, MD 21205 (United States); Risk Sciences and Public Policy Institute, Bloomberg School of Public Health, Johns Hopkins University, 624 North Broadway, Room 429, Baltimore, MD 21205 (United States); University of California at San Francisco, Department of Obstetrics, Gynecology & Reproductive Sciences, Mailstop 0132, 550 16th Street, 7th Floor, San Francisco, CA 94143 (United States); and others

    2016-06-01

    Private wells serving fewer than 25 people are federally unregulated, and their users may be exposed to naturally occurring agents of concern such as arsenic and radionuclides, as well as anthropogenic contaminants. The Centers for Disease Control and Prevention's Clean Water for Health Program works to protect private wells and prevent adverse health outcomes for the roughly 15% of Americans who rely on them. To understand current and emerging challenges to the private drinking water supply, an interdisciplinary expert panel workshop on “Future and Emerging Issues for Private Wells” was organized to inform strategic planning for the Clean Water for Health Program. The panel assessed current conditions of ground water as a source for private wells, identified emerging threats, critical gaps in knowledge, and public health needs, and recommended strategies to guide future activities to ensure the safety of private drinking water wells. These strategies addressed topics of broad interest to the environmental public health community including: development of new methods to support citizen science; addressing contaminant mixtures; expanding capacity for well testing; evaluating treatment technologies; building an evidence base on best practices on well owner outreach and stewardship; and research and data needs. - Highlights: • About 43 million Americans use federally unregulated private wells for drinking water. • Private wells may be contaminated with naturally occurring and man-made chemicals. • Protecting well water requires an “infrastructure for stewardship”. • Recommendations to advance private well protection are offered.

  19. Expert Panel Workshop Consensus Statement on the Role of the Environment in the Development of Autoimmune Disease

    Science.gov (United States)

    Parks, Christine G.; Miller, Frederick W.; Pollard, Kenneth Michael; Selmi, Carlo; Germolec, Dori; Joyce, Kelly; Rose, Noel R.; Humble, Michael C.

    2014-01-01

    Autoimmune diseases include 80 or more complex disorders characterized by self-reactive, pathologic immune responses in which genetic susceptibility is largely insufficient to determine disease onset. In September 2010, the National Institute of Environmental Health Sciences (NIEHS) organized an expert panel workshop to evaluate the role of environmental factors in autoimmune diseases, and the state of the science regarding relevant mechanisms, animal models, and human studies. The objective of the workshop was to analyze the existing data to identify conclusions that could be drawn regarding environmental exposures and autoimmunity and to identify critical knowledge gaps and areas of uncertainty for future study. This consensus document summarizes key findings from published workshop monographs on areas in which “confident” and “likely” assessments were made, with recommendations for further research. Transcribed notes and slides were reviewed to synthesize an overview on exposure assessment and questions addressed by interdisciplinary panels. Critical advances in the field of autoimmune disease research have been made in the past decade. Collaborative translational and interdisciplinary research is needed to elucidate the role of environmental factors in autoimmune diseases. A focus on exposure assessment methodology is needed to improve the effectiveness of human studies, and more experimental studies are needed to focus on causal mechanisms underlying observed associations of environmental factors with autoimmune disease in humans. PMID:25196523

  20. Meeting the public health challenge of protecting private wells: Proceedings and recommendations from an expert panel workshop

    International Nuclear Information System (INIS)

    Fox, Mary A.; Nachman, Keeve E.; Anderson, Breeana; Lam, Juleen

    2016-01-01

    Private wells serving fewer than 25 people are federally unregulated, and their users may be exposed to naturally occurring agents of concern such as arsenic and radionuclides, as well as anthropogenic contaminants. The Centers for Disease Control and Prevention's Clean Water for Health Program works to protect private wells and prevent adverse health outcomes for the roughly 15% of Americans who rely on them. To understand current and emerging challenges to the private drinking water supply, an interdisciplinary expert panel workshop on “Future and Emerging Issues for Private Wells” was organized to inform strategic planning for the Clean Water for Health Program. The panel assessed current conditions of ground water as a source for private wells, identified emerging threats, critical gaps in knowledge, and public health needs, and recommended strategies to guide future activities to ensure the safety of private drinking water wells. These strategies addressed topics of broad interest to the environmental public health community including: development of new methods to support citizen science; addressing contaminant mixtures; expanding capacity for well testing; evaluating treatment technologies; building an evidence base on best practices on well owner outreach and stewardship; and research and data needs. - Highlights: • About 43 million Americans use federally unregulated private wells for drinking water. • Private wells may be contaminated with naturally occurring and man-made chemicals. • Protecting well water requires an “infrastructure for stewardship”. • Recommendations to advance private well protection are offered.

  1. Probability encoding of hydrologic parameters for basalt. Elicitation of expert opinions from a panel of five consulting hydrologists

    International Nuclear Information System (INIS)

    Runchal, A.K.; Merkhofer, M.W.; Olmsted, E.; Davis, J.D.

    1984-11-01

    The Columbia River basalts underlying the Hanford Site in Washington State are being considered as a possible location for a geologic repository for high-level nuclear waste. To investigate the feasibility of a repository at this site, the hydrologic parameters of the site must be evaluated. Among hydrologic parameters of particular interest are the effective porosity of the Cohassett basalt flow top and flow interior and the vertical-to-horizontal hydraulic conductivity, or anisotropy ratio, of the Cohassett basalt flow interior. The Cohassett basalt flow is the prime candidate horizon for repository studies. Site-specific data for these hydrologic parameters are currently inadequate for the purpose of preliminary assessment of candidate repository performance. To obtain credible, auditable, and independently derived estimates of the specified hydrologic parameters, a panel of five nationally recognized hydrologists was assembled. Their expert judgments were quantified during two rounds of Delphi process by means of a probability encoding method developed to estimate the probability distributions of the selected hydrologic variables. The results indicate significant differences of expert opinion for cumulative probabilities of less than 10% and greater than 90%, but relatively close agreement in the middle ranges of values. The principal causes of the diversity of opinion are believed to be the lack of site-specific data and the absence of a single, widely accepted, conceptual or theoretical basis for analyzing these variables

  2. Probability encoding of hydrologic parameters for basalt. Elicitation of expert opinions from a panel of five consulting hydrologists

    Energy Technology Data Exchange (ETDEWEB)

    Runchal, A.K.; Merkhofer, M.W.; Olmsted, E.; Davis, J.D.

    1984-11-01

    The Columbia River basalts underlying the Hanford Site in Washington State are being considered as a possible location for a geologic repository for high-level nuclear waste. To investigate the feasibility of a repository at this site, the hydrologic parameters of the site must be evaluated. Among hydrologic parameters of particular interest are the effective porosity of the Cohassett basalt flow top and flow interior and the vertical-to-horizontal hydraulic conductivity, or anisotropy ratio, of the Cohassett basalt flow interior. The Cohassett basalt flow is the prime candidate horizon for repository studies. Site-specific data for these hydrologic parameters are currently inadequate for the purpose of preliminary assessment of candidate repository performance. To obtain credible, auditable, and independently derived estimates of the specified hydrologic parameters, a panel of five nationally recognized hydrologists was assembled. Their expert judgments were quantified during two rounds of Delphi process by means of a probability encoding method developed to estimate the probability distributions of the selected hydrologic variables. The results indicate significant differences of expert opinion for cumulative probabilities of less than 10% and greater than 90%, but relatively close agreement in the middle ranges of values. The principal causes of the diversity of opinion are believed to be the lack of site-specific data and the absence of a single, widely accepted, conceptual or theoretical basis for analyzing these variables.

  3. Towards earlier inclusion of Children in Tuberculosis (TB) drugs trials: Consensus statements from an Expert Panel

    Science.gov (United States)

    Nachman, Sharon; Ahmed, Amina; Amanullah, Farhana; Becerra, Mercedes C; Botgros, Radu; Brigden, Grania; Browning, Renee; Gardiner, Elizabeth; Hafner, Richard; Hesseling, Anneke; How, Cleotilde; Jean-Philippe, Patrick; Lessem, Erica; Makhene, Mamodikoe; Mbelle, Nontombi; Marais, Ben; McIlleron, Helen; Mc Neeley, David F; Mendel, Carl; Murray, Stephen; Navarro, Eileen; Oramasionwu, Gloria E; Porcalla, Ariel R; Powell, Clydette; Powell, Mair; Rigaud, Mona; Rouzier, Vanessa; Samson, Pearl; Schaaf, H. Simon; Shah, Seema; Starke, Jeff; Swaminathan, Soumya; Wobudeya, Eric; Worrell, Carol

    2015-01-01

    Children represent a significant proportion of the global tuberculosis (TB) burden, and may be disproportionately more affected by its most severe clinical manifestations. Currently available treatments for pediatric drug-susceptible (DS) and drug-resistant (DR) TB, albeit generally effective, are hampered by high pill burden, long duration of treatment, coexistent toxicities, and an overall lack of suitable, child-friendly formulations. The complex and burdensome nature of administering the existing regimens to treat DS TB also contributes to the rise of DR TB strains. Despite the availability and use of these therapies for decades, a dearth of dosing evidence in children underscores the importance of sustained efforts for TB drug development to better meet the treatment needs of children with TB. Several new TB drugs and regimens with promising activity against both DS and DR TB strains have recently entered clinical development and are in various phases of clinical evaluation in adults or have received marketing authorization for adults. However, initiation of clinical trials to evaluate these drugs in children is often deferred, pending the availability of complete safety and efficacy data in adults or after drug approval. This document summarizes consensus statements from an international panel of childhood TB opinion leaders which support the initiation of evaluation of new TB drugs and regimens in children at earlier phases of the TB Drug development cycle. PMID:25957923

  4. Experiment with expert system guidance of an engineering analysis task

    International Nuclear Information System (INIS)

    Ransom, V.H.; Fink, R.K.; Callow, R.A.

    1986-01-01

    An experiment is being conducted in which expert systems are used to guide the performance of an engineering analysis task. The task chosen for experimentation is the application of a large thermal hydraulic transient simulation computer code. The expectation from this work is that the expert system will result in an improved analytical result with a reduction in the amount of human labor and expertise required. The code associated functions of model formulation, data input, code execution, and analysis of the computed output have all been identified as candidate tasks that could benefit from the use of expert systems. Expert system modules have been built for the model building and data input task. Initial results include the observation that human expectations of an intelligent environment rapidly escalate and structured or stylized tasks that are tolerated in the unaided system are frustrating within the intelligent environment

  5. Expert panel on practice patterns in the management of cow's milk protein allergy and associated economic burden of disease on health service in Turkey.

    Science.gov (United States)

    Sekerel, Bulent Enis; Seyhun, Oznur

    2017-09-01

    practice patterns in CMPA in Turkey, use of expert clinical opinion of the panel members rather than real-life data on practice patterns that were used to identify direct medical costs might raise a concern with the validity and reliability of the data. Also, while this was a three-step study with six experts included in the first stage (developing local guidelines for diagnosis, treatment, and follow-up of infants with CMPA in Turkey) and 410 pediatricians included in the second stage (a cross-sectional questionnaire-survey to determine pediatricians' awareness and practice of CMPA in infants and children), only four members were included in the present Delphi panel, which allows a limited discussion. Third, lack of sensitivity analyses and exclusion of indirect costs and costs related to alterations in quality of life, behavior of infants, and general well-being of infants and their parents from the cost-analysis seems to be another limitation that may have caused under-estimation of relative cost-effectiveness of the formulae. Fourth, calculation of costs per local guidelines rather than real-life practice patterns is another limitation that, otherwise, would extend the knowledge achieved in the current study. Notwithstanding these limitations, the present expert panel provided practice patterns in the management of CMPA and an estimate of the associated costs, depending on the symptom profile at initial admission for the first time in Turkey. In conclusion, in providing the first health economic data on CMPA in Turkey, the findings revealed that CMPA imposes a substantial burden on the Turkish healthcare system from both a payer perspective and societal perspective, and indicated clinical nutrition as a primary cost driver. Management of infants presenting with eczema, exclusively formula-fed infants, and first line use of AAF were associated with higher estimates for 2-year direct medical costs.

  6. Artificial intelligence and medical imaging. Expert systems and image analysis

    International Nuclear Information System (INIS)

    Wackenheim, A.; Zoellner, G.; Horviller, S.; Jacqmain, T.

    1987-01-01

    This paper gives an overview on the existing systems for automated image analysis and interpretation in medical imaging, especially in radiology. The example of ORFEVRE, the system for the analysis of CAT-scan images of the cervical triplet (c3-c5) by image analysis and subsequent expert-system is given and discussed in detail. Possible extensions are described [fr

  7. An expert image analysis system for chromosome analysis application

    International Nuclear Information System (INIS)

    Wu, Q.; Suetens, P.; Oosterlinck, A.; Van den Berghe, H.

    1987-01-01

    This paper reports a recent study on applying a knowledge-based system approach as a new attempt to solve the problem of chromosome classification. A theoretical framework of an expert image analysis system is proposed, based on such a study. In this scheme, chromosome classification can be carried out under a hypothesize-and-verify paradigm, by integrating a rule-based component, in which the expertise of chromosome karyotyping is formulated with an existing image analysis system which uses conventional pattern recognition techniques. Results from the existing system can be used to bring in hypotheses, and with the rule-based verification and modification procedures, improvement of the classification performance can be excepted

  8. System reliability analysis with natural language and expert's subjectivity

    International Nuclear Information System (INIS)

    Onisawa, T.

    1996-01-01

    This paper introduces natural language expressions and expert's subjectivity to system reliability analysis. To this end, this paper defines a subjective measure of reliability and presents the method of the system reliability analysis using the measure. The subjective measure of reliability corresponds to natural language expressions of reliability estimation, which is represented by a fuzzy set defined on [0,1]. The presented method deals with the dependence among subsystems and employs parametrized operations of subjective measures of reliability which can reflect expert 's subjectivity towards the analyzed system. The analysis results are also expressed by linguistic terms. Finally this paper gives an example of the system reliability analysis by the presented method

  9. An expert panel process to evaluate habitat restoration actions in the Columbia River estuary.

    Science.gov (United States)

    Krueger, Kirk L; Bottom, Daniel L; Hood, W Gregory; Johnson, Gary E; Jones, Kim K; Thom, Ronald M

    2017-03-01

    We describe a process for evaluating proposed ecosystem restoration projects intended to improve survival of juvenile salmon in the Columbia River estuary (CRE). Changes in the Columbia River basin (northwestern USA), including hydropower development, have contributed to the listing of 13 salmon stocks as endangered or threatened under the U.S. Endangered Species Act. Habitat restoration in the CRE, from Bonneville Dam to the ocean, is part of a basin-wide, legally mandated effort to mitigate federal hydropower impacts on salmon survival. An Expert Regional Technical Group (ERTG) was established in 2009 to improve and implement a process for assessing and assigning "survival benefit units" (SBUs) to restoration actions. The SBU concept assumes site-specific restoration projects will increase juvenile salmon survival during migration through the 234 km CRE. Assigned SBUs are used to inform selection of restoration projects and gauge mitigation progress. The ERTG standardized the SBU assessment process to improve its scientific integrity, repeatability, and transparency. In lieu of experimental data to quantify the survival benefits of individual restoration actions, the ERTG adopted a conceptual model composed of three assessment criteria-certainty of success, fish opportunity improvements, and habitat capacity improvements-to evaluate restoration projects. Based on these criteria, an algorithm assigned SBUs by integrating potential fish density as an indicator of salmon performance. Between 2009 and 2014, the ERTG assessed SBUs for 55 proposed projects involving a total of 181 restoration actions located across 8 of 9 reaches of the CRE, largely relying on information provided in a project template based on the conceptual model, presentations, discussions with project sponsors, and site visits. Most projects restored tidal inundation to emergent wetlands, improved riparian function, and removed invasive vegetation. The scientific relationship of geomorphic and

  10. Caring for Our Future: The Content of Prenatal Care. A Report of the Public Health Service Expert Panel on the Content of Prenatal Care.

    Science.gov (United States)

    National Institutes of Health (DHHS), Bethesda, MD.

    This report describes effective approaches for enhancing maternal, infant, and family outcomes based on the scientific and systematic assessment of the content of prenatal care conducted by the Public Health Service's Expert Panel on the Content of Prenatal Care. The range of risks, both medical and psychosocial, that the prenatal care provider…

  11. An expert panel approach to assessing potential effects of bull trout reintroduction on federally listed salmonids in the Clackamas River, Oregon

    Science.gov (United States)

    Bruce G. Marcot; Chris S. Allen; Steve Morey; Dan Shively; Rollie. White

    2012-01-01

    The bull trout Salvelinus confluentus is an apex predator in native fish communities in the western USA and is listed as threatened under the U.S. Endangered Species Act (ESA). Restoration of this species has raised concerns over its potential predatory impacts on native fish fauna. We held a five-person expert panel to help determine potential...

  12. Cooperative analysis expert situation assessment research

    Science.gov (United States)

    Mccown, Michael G.

    1987-01-01

    For the past few decades, Rome Air Development Center (RADC) has been conducting research in Artificial Intelligence (AI). When the recent advances in hardware technology made many AI techniques practical, the Intelligence and Reconnaissance Directorate of RADC initiated an applications program entitled Knowledge Based Intelligence Systems (KBIS). The goal of the program is the development of a generic Intelligent Analyst System, an open machine with the framework for intelligence analysis, natural language processing, and man-machine interface techniques, needing only the specific problem domain knowledge to be operationally useful. The development of KBIS is described.

  13. Discussion panel: field test design & data analysis

    Science.gov (United States)

    Daniel M. Schmitt; William E. Waters; B. Leo Cadogan; Gerald S. Walton

    1985-01-01

    I think it is time to open the panel. On my left respectively are Bill Waters, Professor of Entomology and Forestry, University of California, Berkeley; Gerald S. Walton, Biometrician, Northeastern Forest Experiment Station, Hamden; and Leo Cadogan, Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario. My name is Dan Schmitt, Program...

  14. Adaptive frequency decomposition of EEG with subsequent expert system analysis.

    Science.gov (United States)

    Herrmann, C S; Arnold, T; Visbeck, A; Hundemer, H P; Hopf, H C

    2001-11-01

    We present a hybrid system for automatic analysis of clinical routine EEG, comprising a spectral analysis and an expert system. EEG raw data are transformed into the time-frequency domain by the so-called adaptive frequency decomposition. The resulting frequency components are converted into pseudo-linguistic facts via fuzzification. Finally, an expert system applies symbolic rules formulated by the neurologist to evaluate the extracted EEG features. The system detects artefacts, describes alpha rhythm by frequency, amplitude, and stability and after artefact rejection detects pathologic slow activity. All results are displayed as linguistic terms, numerical values and maps of temporal extent, giving an overview about the clinical routine EEG.

  15. Uncertainty Analysis and Expert Judgment in Seismic Hazard Analysis

    Science.gov (United States)

    Klügel, Jens-Uwe

    2011-01-01

    The large uncertainty associated with the prediction of future earthquakes is usually regarded as the main reason for increased hazard estimates which have resulted from some recent large scale probabilistic seismic hazard analysis studies (e.g. the PEGASOS study in Switzerland and the Yucca Mountain study in the USA). It is frequently overlooked that such increased hazard estimates are characteristic for a single specific method of probabilistic seismic hazard analysis (PSHA): the traditional (Cornell-McGuire) PSHA method which has found its highest level of sophistication in the SSHAC probability method. Based on a review of the SSHAC probability model and its application in the PEGASOS project, it is shown that the surprising results of recent PSHA studies can be explained to a large extent by the uncertainty model used in traditional PSHA, which deviates from the state of the art in mathematics and risk analysis. This uncertainty model, the Ang-Tang uncertainty model, mixes concepts of decision theory with probabilistic hazard assessment methods leading to an overestimation of uncertainty in comparison to empirical evidence. Although expert knowledge can be a valuable source of scientific information, its incorporation into the SSHAC probability method does not resolve the issue of inflating uncertainties in PSHA results. Other, more data driven, PSHA approaches in use in some European countries are less vulnerable to this effect. The most valuable alternative to traditional PSHA is the direct probabilistic scenario-based approach, which is closely linked with emerging neo-deterministic methods based on waveform modelling.

  16. Toward Earlier Inclusion of Pregnant and Postpartum Women in Tuberculosis Drug Trials: Consensus Statements From an International Expert Panel.

    Science.gov (United States)

    Gupta, Amita; Mathad, Jyoti S; Abdel-Rahman, Susan M; Albano, Jessica D; Botgros, Radu; Brown, Vikki; Browning, Renee S; Dawson, Liza; Dooley, Kelly E; Gnanashanmugam, Devasena; Grinsztejn, Beatriz; Hernandez-Diaz, Sonia; Jean-Philippe, Patrick; Kim, Peter; Lyerly, Anne D; Mirochnick, Mark; Mofenson, Lynne M; Montepiedra, Grace; Piper, Jeanna; Sahin, Leyla; Savic, Radojka; Smith, Betsy; Spiegel, Hans; Swaminathan, Soumya; Watts, D Heather; White, Amina

    2016-03-15

    Tuberculosis is a major cause of morbidity and mortality in women of childbearing age (15-44 years). Despite increased tuberculosis risk during pregnancy, optimal clinical treatment remains unclear: safety, tolerability, and pharmacokinetic data for many tuberculosis drugs are lacking, and trials of promising new tuberculosis drugs exclude pregnant women. To advance inclusion of pregnant and postpartum women in tuberculosis drug trials, the US National Institutes of Health convened an international expert panel. Discussions generated consensus statements (>75% agreement among panelists) identifying high-priority research areas during pregnancy, including: (1) preventing progression of latent tuberculosis infection, especially in women coinfected with human immunodeficiency virus; (2) evaluating new agents/regimens for treatment of multidrug-resistant tuberculosis; and (3) evaluating safety, tolerability and pharmacokinetics of tuberculosis drugs already in use during pregnancy and postpartum. Incorporating pregnant women into clinical trials would extend evidence-based tuberculosis prevention and treatment standards to this special population. © The Author 2015. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail journals.permissions@oup.com.

  17. ANAPPRES: An expert system for interference well-test analysis

    Energy Technology Data Exchange (ETDEWEB)

    Arellano, V.M.; Iglesias, E.R.; Arellano, J.; Schwarzblat, M.

    1988-01-01

    We present ANAPPRES V1.0, the first version of a computerized expert system capable of analyzing constant- and variable-flowrate interference tests, in which there is one active well and an arbitrary number of observation wells, in liquid-saturated homogeneous reservoirs. ANAPPRES successfully couples mathematical models, optimization techniques, heuristic knowledge and computerized graphics, a combination not often found in published expert systems. Its main advantages are that it is user friendly, requires essentially no experience on the part of the analyst, eliminates subjectivity associated with earlier techniques of analysis, can handle complex cases and large data sets, completes the analysis of even the most complex cases (including plotting the results) in one run, and is significantly faster than a human expert.

  18. Contribution of a fuzzy expert system to regulatory impact analysis

    Directory of Open Access Journals (Sweden)

    Marco Antônio da Cunha

    2015-09-01

    Full Text Available Regulatory Impact Analysis (RIA has been consolidating in Brazilian regulatory agencies throughout the last decades. The RIA methodology aims to examine the regulatory process, measure the costs and benefits generated, as well as other effects of social, political or economic nature caused by a new or an existing regulation. By analysing each regulatory option, the expert or regulator faces a myriad of variables, usually of qualitative nature, that are difficult to measure and with a high degree of uncertainty. This research complements the existing literature, given the scarcity of decision support models in RIA that – regardless of the problem treated – incorporate the tacit knowledge of the regulation expert. This paper proposes an exploratory approach using a Fuzzy Expert System, which therefore helps to enrich the decision process in the final stage of comparison of the regulatory options.

  19. Modal Analysis of MARS Solar Panel and Planar Vibrations

    Science.gov (United States)

    Simonyan, Andranik; Williams, R. Brett

    2007-01-01

    This slide presentation reviews the modal analysis of MARS solar panels and the planar vibrations. Included are views of the solar panels mock-up assembly, a view of the test seup,a view of the plot from the test, with the raw numbers of the frequencies in Hz values with the mode number, the spatial acceleration plots of Center sub panel at resonant frequencies, predictions from the Finite element models, an explanation of the two test that were done on the plate and the results from both tests,

  20. The suitability of caffeinated drinks for children: a systematic review of randomised controlled trials, observational studies and expert panel guidelines.

    Science.gov (United States)

    Ruxton, C H S

    2014-08-01

    The increased availability of caffeinated drinks raises questions about the level of caffeine that is appropriate for children, as well as the benefits and risks associated with their consumption. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, this systematic review evaluates evidence from randomised controlled trials investigating the effects of caffeine on cognition, behaviour, mood and exercise performance in children. Observational studies and expert panel guidelines are also discussed. One hundred and nine studies were found, with 11 randomised controlled trials and 13 observational studies meeting the criteria. High caffeine intakes (e.g. >5 mg kg(-1) body weight day(-1)) were associated with an increased risk of anxiety and withdrawal symptoms. However, smaller amounts were not linked with such effects and may benefit cognitive function and sports performance based on adult studies. The evidence suggests that children and adolescents should limit daily caffeine consumption to 2.5 mg kg(-1) body weight day(-1), equating to one or two cups of tea or one small cup of coffee. Lower contributors of caffeine, such as tea, may be more appropriate for children because they contribute to daily fluid intakes and provide flavonoids. By contrast, caffeinated soft drinks may be less suitable options for children as a result of their acidity, higher caffeine content, presence of added sugar (in some cases) and absence of bioactive compounds. More studies are needed to determine the intakes that represent a risk and whether there may be benefits for alertness and sports performance with moderate intakes of caffeine. © 2013 The British Dietetic Association Ltd.

  1. Thyroid cancer in children living near Chernobyl. Expert panel report on the consequences of the Chernobyl accident

    International Nuclear Information System (INIS)

    Williams, D.; Karaoglou, A.; Chadwick, K.H.

    1993-01-01

    In January 1992, the Radiation Protection Research Action formed a panel of thyroid experts in order to evaluate the current situation concerning reported increased rates of thyroid cancer in children living in the neighbourhood of Chernobyl, where the reactor accident occurred on April 26 1986 and resulted in widespread radioactive contamination over large areas of Belarus, Russia, Ukraine. Studies of the Atom Bomb survivors in Japan have revealed that the incidence of leukemia starts to increase some five years after exposure. For Chernobyl accident health consequences are now becoming evident. Thyroid cancer has already been observed in children. Iodine 131 was seen to pose a specific hazard because it is taken up by the body and concentrated in the thyroid gland. At a dose of 5 Gy to the childhood thyroid about 4000 thyroid cancers per 100000 children exposed can be anticipated. An essential component of the verification of this observation is the study of the pathology of the lesions, which derived from four cell types: follicular cells, C cells, lymphoid cells and connective tumor cells. All distant metastases are lung metastases. Measures to be considered for the prevention of the development of thyroid cancer in a radiation-exposed population include correction of iodine deficiency by iodine prophylaxis and suppression of TSH. There are three methods of diagnosis: ultrasound imaging, thyroid scanning, fine needle aspiration performed by skilled personnel. For the therapy total or near-total thyroidectomy is regarded as the treatment of choice. Radioactive iodine can be used to treat lymph node and distant metastases which take up iodine after a total thyroidectomy. Thyroid hormone replacement should be carried out with TSH suppressive doses of L-Thyroxine. 45 refs., 1 annexe

  2. Establishing a clinical simulation centre: Recommendations from an expert panel from the International Conference on Advanced Clinical Simulation, Dhahran, Saudi Arabia

    Directory of Open Access Journals (Sweden)

    Hani Lababidi

    2015-01-01

    Full Text Available Establishing a simulation centre remains a real challenge for many experts in the field of clinical simulation. A panel of experts presented some guidelines during the International Conference on Advanced Clinical Simulation that was held in Prince Sultan Military College of Health Sciences, Dhahran, Kingdom of Saudi Arabia, in October 2014. The round table discussion addressed eight themes: The planning stage, stakeholders' involvement, strategic planning, centre design, partnership development, faculty development, curriculum development and establishing a research strategy. The conclusions are presented in this paper.

  3. Expert Panel Recommendations for the Identification and Management of Hyperkalemia and Role of Patiromer in Patients with Chronic Kidney Disease and Heart Failure.

    Science.gov (United States)

    Rafique, Zubaid; Weir, Matthew R; Onuigbo, Macaulay; Pitt, Bertram; Lafayette, Richard; Butler, Javed; Lopes, Maria; Farnum, Carolyn; Peacock, W Frank

    2017-04-01

    Virtual panel meetings were conducted among 7 physicians, all of whom are independent experts, including 3 nephrologists, 2 cardiologists, and 2 emergency medicine physicians (the panel). The panel met with the purpose of discussing the current treatment landscape, treatment challenges, economic impact, and gaps in care for patients with hyperkalemia that is associated with heart failure and chronic kidney disease. The stated goal of the panel discussion was to develop practical solutions in the identification and management of hyperkalemia in this patient population. The panel noted that hyperkalemia is a serious condition that can lead to life-threatening complications, yet the treatment paradigm for hyperkalemia has remained without major advances for approximately 50 years, until the approval of patiromer. A number of issues still exist in the management of this patient population, including the lack of uniform treatment guidelines and consensus regarding the approach to treatment. As part of its effort, the panel developed an algorithm, the Proposed Diagnostic Algorithm for Hyperkalemia Treatment in the Acute Care Setting/Chronic Care. The panel agreed that patiromer appears to be a viable option for the management of hyperkalemia in patients with chronic kidney disease and/or heart failure and in patients who experience chronic hyperkalemia. This panel discussion was funded by Relypsa and facilitated by Magellan Rx Management. Rafique is a principal investigator for Relypsa and serves as a consultant for Instrumentation Laboratory, Magellan Health, Relypsa, and ZS-Pharma. Butler serves as consultant for Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, CardioCell, Janssen, Merck, Novartis, Relypsa, and ZS-Pharma. Lopes and Farnum are employed by Magellan Rx Management. Rafique designed the management protocol for this panel discussion and contributed to the writing and editing of this report document. The other authors report no conflicting interests. Relypsa

  4. Fracture Analysis of the FAA/NASA Wide Stiffened Panels

    Science.gov (United States)

    Seshadri, B. R.; Newman, J. C., Jr.; Dawicke, D. S.; Young, R. D.

    1999-01-01

    This paper presents the fracture analyses conducted on the FAA/NASA stiffened and unstiffened panels using the STAGS (STructural Analysis of General Shells) code with the critical crack-tip-opening angle (CTOA) fracture criterion. The STAGS code with the "plane-strain" core option was used in all analyses. Previous analyses of wide, flat panels have shown that the high-constraint conditions around a crack front, like plane strain, has to be modeled in order for the critical CTOA fracture criterion to predict wide panel failures from small laboratory tests. In the present study, the critical CTOA value was determined from a wide (unstiffened) panel with anti-buckling guides. The plane-strain core size was estimated from previous fracture analyses and was equal to about the sheet thickness. Rivet flexibility and stiffener failure was based on methods and criteria, like that currently used in industry. STAGS and the CTOA criterion were used to predict load-against-crack extension for the wide panels with a single crack and multiple-site damage cracking at many adjacent rivet holes. Analyses were able to predict stable crack growth and residual strength within a few percent (5%) of stiffened panel tests results but over predicted the buckling failure load on an unstiffened panel with a single crack by 10%.

  5. Can fire safety in hotels be improved? Results from the survey of a panel of experts in Spain.

    Science.gov (United States)

    Rubio-Romero, Juan Carlos; Márquez-Sierra, Francisco; Suárez-Cebador, Manuel

    2016-06-08

    The hotel industry is an important driver of the European labour market with over 250,000 hotels employing some 2 million people. In Spain, 240 workers were injured by fires in hotels from 2004 to 2008. Fire is considered to be the most important risk in the hotel industry, but the lack of an EU-wide data recording system for hotels makes it difficult to give exact figures for fire events. We analysed the state of fire prevention systems in hotels in Spain with the aim of proposing strategies to improve fire safety. A 10-item questionnaire was administered from 2007 to 2009 to 15 Spanish experts in fire safety. The questions were measured using a Likert scale and classified into 4 sections: current state of installations, influence of establishment characteristics, application of regulations and priority ranking of actions. Descriptive statistics summarized the data and t-tests evaluated the agreement foreach statement in the questionnaire. The statistical analysis showed homogeneity in the responses by the experts in all four categories: current state of fire safety installations, influence of establishment characteristics, application of regulations, and priority of actions. There was consensus among the experts over the necessity to improve the enforcement of regulations and also regarding the existence of an association between the hotel category (in Spain they are ranked using a 1 to 5 "star" rating system) and the level of fire safety; hotels with a higher category had higher levels of safety. There is a need to identify ways to apply fire safety standards to older hotels so that they comply with new regulations, to standardize regulations for different regions and countries, to improve the maintenance of installations and equipment, to increase the effectiveness of inspections conducted by government bodies, and to raise the general awareness of stakeholders involved in hotel fire prevention.

  6. Expert Cold Structure Development

    Science.gov (United States)

    Atkins, T.; Demuysere, P.

    2011-05-01

    The EXPERT Program is funded by ESA. The objective of the EXPERT mission is to perform a sub-orbital flight during which measurements of critical aero- thermodynamic phenomena will be obtained by using state-of-the-art instrumentation. As part of the EXPERT Flight Segment, the responsibility of the Cold Structure Development Design, Manufacturing and Validation was committed to the Belgian industrial team SONACA/SABCA. The EXPERT Cold Structure includes the Launcher Adapter, the Bottom Panel, the Upper Panel, two Cross Panels and the Parachute Bay. An additional Launcher Adapter was manufactured for the separation tests. The selected assembly definition and manufacturing technologies ( machined parts and sandwich panels) were dictated classically by the mass and stiffness, but also by the CoG location and the sensitive separation interface. Used as support for the various on-board equipment, the Cold Structure is fixed to but thermally uncoupled from the PM 1000 thermal shield. It is protect on its bottom panel by a thermal blanket. As it is a protoflight, analysis was the main tool for the verification. Low level stiffness and modal analysis tests have also been performed on the Cold Structure equipped with its ballast. It allowed to complete its qualification and to prepare SONACA/SABCA support for the system dynamic tests foreseen in 2011. The structure was finally coated with a thermal control black painting and delivered on time to Thales Alenia Space-Italy end of March 201.

  7. Vacuum Insulation Panels: Analysis of the Thermal Performance of Both Single Panel and Multilayer Boards

    Directory of Open Access Journals (Sweden)

    Alfonso Capozzoli

    2015-03-01

    Full Text Available The requirements for improvement in the energy efficiency of buildings, mandatory in many EU countries, entail a high level of thermal insulation of the building envelope. In recent years, super-insulation materials with very low thermal conductivity have been developed. These materials provide satisfactory thermal insulation, but allow the total thickness of the envelope components to be kept below a certain thickness. Nevertheless, in order to penetrate the building construction market, some barriers have to be overcome. One of the main issues is that testing procedures and useful data that are able to give a reliable picture of their performance when applied to real buildings have to be provided. Vacuum Insulation Panels (VIPs are one of the most promising high performing technologies. The overall, effective, performance of a panel under actual working conditions is influenced by thermal bridging, due to the edge of the panel envelope and to the type of joint. In this paper, a study on the critical issues related to the laboratory measurement of the equivalent thermal conductivity of VIPs and their performance degradation due to vacuum loss has been carried out utilizing guarded heat flux meter apparatus. A numerical analysis has also been developed to study thermal bridging effect when VIP panels are adopted to create multilayer boards for building applications.

  8. Seismic hazard analysis using expert opinions with uncertainties

    International Nuclear Information System (INIS)

    Bernreuter, D.L.; Chung, D.H.; Mensing, R.W.; Savy, J.B.

    1983-01-01

    An important element of a seismic risk assessment of a nuclear power plant is the description of the seismic hazard at the site. The seismic input takes two forms: (1) an earthquake time history which can be used in the structural analysis to compute the structural and component responses to the seismic event; and (2) a seismic hazard curve which describes the probability of exceedance of some seismic variables, e.g., peak ground aceleration at the site. As part of an NRC sponsored project, LLNL has developed a methodology for eliciting the opinions of experts about the seismicity of the EUS and using these opinions, along with an associated measure of uncertainty, to assess the seismic hazard at several sites in the EUS. The purpose of this paper is to describe (1) how the opinions of experts were elicited, including an elicitation of the experts uncertainty about seismicity, and (2) how the experts best estimates and statements of uncertainty were combined to assess the hazard curve along with appropriate confidence bounds at a site

  9. Integrating clinicians, knowledge and data: expert-based cooperative analysis in healthcare decision support

    Directory of Open Access Journals (Sweden)

    García-Alonso Carlos

    2010-09-01

    Full Text Available Abstract Background Decision support in health systems is a highly difficult task, due to the inherent complexity of the process and structures involved. Method This paper introduces a new hybrid methodology Expert-based Cooperative Analysis (EbCA, which incorporates explicit prior expert knowledge in data analysis methods, and elicits implicit or tacit expert knowledge (IK to improve decision support in healthcare systems. EbCA has been applied to two different case studies, showing its usability and versatility: 1 Bench-marking of small mental health areas based on technical efficiency estimated by EbCA-Data Envelopment Analysis (EbCA-DEA, and 2 Case-mix of schizophrenia based on functional dependency using Clustering Based on Rules (ClBR. In both cases comparisons towards classical procedures using qualitative explicit prior knowledge were made. Bayesian predictive validity measures were used for comparison with expert panels results. Overall agreement was tested by Intraclass Correlation Coefficient in case "1" and kappa in both cases. Results EbCA is a new methodology composed by 6 steps:. 1 Data collection and data preparation; 2 acquisition of "Prior Expert Knowledge" (PEK and design of the "Prior Knowledge Base" (PKB; 3 PKB-guided analysis; 4 support-interpretation tools to evaluate results and detect inconsistencies (here Implicit Knowledg -IK- might be elicited; 5 incorporation of elicited IK in PKB and repeat till a satisfactory solution; 6 post-processing results for decision support. EbCA has been useful for incorporating PEK in two different analysis methods (DEA and Clustering, applied respectively to assess technical efficiency of small mental health areas and for case-mix of schizophrenia based on functional dependency. Differences in results obtained with classical approaches were mainly related to the IK which could be elicited by using EbCA and had major implications for the decision making in both cases. Discussion This

  10. Oral contraception and menstrual bleeding during treatment of venous thromboembolism: Expert opinion versus current practice: Combined results of a systematic review, expert panel opinion and an international survey

    NARCIS (Netherlands)

    Klok, F. A.; Schreiber, K.; Stach, K.; Ageno, W.; Middeldorp, S.; Eichinger, S.; Delluc, A.; Blondon, M.; Ay, C.

    2017-01-01

    The optimal management of oral contraception and menstrual bleeding during treatment of venous thromboembolism (VTE) is largely unknown. We aimed to elicit expert opinion and compare that to current practice as assessed by a world-wide international web-based survey among physicians. 10

  11. Uncertain structural dynamics of aircraft panels and fuzzy structures analysis

    Science.gov (United States)

    Sparrow, Victor W.; Buehrle, Ralph D.

    2002-11-01

    Aircraft fuselage panels, seemingly simple structures, are actually complex because of the uncertainty of the attachments of the frame stiffeners and longitudinal stringers. It is clearly important to understand the dynamics of these panels because of the subsequent radiation into the passenger cabin, even when complete information is not available for all portions of the finite-element model. Over the last few years a fuzzy structures analysis (FSA) approach has been undertaken at Penn State and NASA Langley to quantify the uncertainty in modeling aircraft panels. A new MSC.Nastran [MSC.Software Corp. (Santa Ana, CA)] Direct Matrix Abstraction Program (DMAP) code was written and tested [AIAA paper 2001-1320, 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conf., Seattle, WA, 16 April 2001] and was applied to simple fuselage panel models [J. Acoust. Soc. Am. 109, 2410(A) (2001)]. Recently the work has focused on understanding the dynamics of a realistic aluminum fuselage panel, typical of today's aircraft construction. This presentation will provide an overview of the research and recent results will be given for the fuselage panel. Comparison between experiments and the FSA results will be shown for different fuzzy input parameters. [Work supported by NASA Research Cooperative Agreement NCC-1-382.

  12. Energy from gas hydrates - assessing the opportunities and challenges for Canada: report of the expert panel on gas hydrates

    International Nuclear Information System (INIS)

    2008-09-01

    Gas hydrates form when water and natural gas combine at low temperatures and high pressures in regions of permafrost and in marine subseafloor sediments. Estimates suggest that the total amount of natural gas bound in hydrate form may exceed all conventional gas resources, or even the amount of all combined hydrocarbon energy. Gas from gas hydrate could provide a potentially vast new source of energy to offset declining supplies of conventional natural gas in North America and to provide greater energy security for countries such as Japan and India that have limited domestic sources. However, complex issues would need to be addressed if gas hydrate were to become a large part of the energy future of Canada. Natural Resources Canada asked the Council of Canadian Academies to assemble a panel of experts to examine the challenges for an acceptable operational extraction of gas hydrates in Canada. This report presented an overview of relevant contextual background, including some basic science; the medium-term outlook for supply and demand in markets for natural gas; broad environmental issues related to gas hydrate in its natural state and as a fuel; and an overview of Canada's contribution to knowledge about gas hydrate in the context of ongoing international research activity. The report also presented current information on the subject and what would be required to delineate and quantify the resource. Techniques for extracting gas from gas hydrate were also outlined. The report also addressed safety issues related to gas hydrate dissociation during drilling operations or release into the atmosphere; the environmental issues associated with potential leakage of methane into the atmosphere and with the large volumes of water produced during gas hydrate dissociation; and jurisdictional and local community issues that would need to be resolved in order to proceed with the commercial exploitation of gas hydrate. It was concluded that there does not appear to be

  13. Management of sickle cell disease: summary of the 2014 evidence-based report by expert panel members.

    Science.gov (United States)

    Yawn, Barbara P; Buchanan, George R; Afenyi-Annan, Araba N; Ballas, Samir K; Hassell, Kathryn L; James, Andra H; Jordan, Lanetta; Lanzkron, Sophie M; Lottenberg, Richard; Savage, William J; Tanabe, Paula J; Ware, Russell E; Murad, M Hassan; Goldsmith, Jonathan C; Ortiz, Eduardo; Fulwood, Robinson; Horton, Ann; John-Sowah, Joylene

    2014-09-10

    Sickle cell disease (SCD) is a life-threatening genetic disorder affecting nearly 100,000 individuals in the United States and is associated with many acute and chronic complications requiring immediate medical attention. Two disease-modifying therapies, hydroxyurea and long-term blood transfusions, are available but underused. To support and expand the number of health professionals able and willing to provide care for persons with SCD. Databases of MEDLINE (including in-process and other nonindexed citations), EMBASE, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, CINAHL, TOXLINE, and Scopus were searched using prespecified search terms and keywords to identify randomized clinical trials, nonrandomized intervention studies, and observational studies. Literature searches of English-language publications from 1980 with updates through April 1, 2014, addressed key questions developed by the expert panel members and methodologists. Strong recommendations for preventive services include daily oral prophylactic penicillin up to the age of 5 years, annual transcranial Doppler examinations from the ages of 2 to 16 years in those with sickle cell anemia, and long-term transfusion therapy to prevent stroke in those children with abnormal transcranial Doppler velocity (≥200 cm/s). Strong recommendations addressing acute complications include rapid initiation of opioids for treatment of severe pain associated with a vasoocclusive crisis, and use of incentive spirometry in patients hospitalized for a vasoocclusive crisis. Strong recommendations for chronic complications include use of analgesics and physical therapy for treatment of avascular necrosis, and use of angiotensin-converting enzyme inhibitor therapy for microalbuminuria in adults with SCD. Strong recommendations for children and adults with proliferative sickle cell retinopathy include referral to expert specialists for consideration of laser photocoagulation and for

  14. Fuzzy Structures Analysis of Aircraft Panels in NASTRAN

    Science.gov (United States)

    Sparrow, Victor W.; Buehrle, Ralph D.

    2001-01-01

    This paper concerns an application of the fuzzy structures analysis (FSA) procedures of Soize to prototypical aerospace panels in MSC/NASTRAN, a large commercial finite element program. A brief introduction to the FSA procedures is first provided. The implementation of the FSA methods is then disclosed, and the method is validated by comparison to published results for the forced vibrations of a fuzzy beam. The results of the new implementation show excellent agreement to the benchmark results. The ongoing effort at NASA Langley and Penn State to apply these fuzzy structures analysis procedures to real aircraft panels is then described.

  15. Factors influencing societal response of nanotechnology: an expert stakeholder analysis

    Science.gov (United States)

    Gupta, Nidhi; Fischer, Arnout R. H.; van der Lans, Ivo A.; Frewer, Lynn J.

    2012-05-01

    Nanotechnology can be described as an emerging technology and, as has been the case with other emerging technologies such as genetic modification, different socio-psychological factors will potentially influence societal responses to its development and application. These factors will play an important role in how nanotechnology is developed and commercialised. This article aims to identify expert opinion on factors influencing societal response to applications of nanotechnology. Structured interviews with experts on nanotechnology from North West Europe were conducted using repertory grid methodology in conjunction with generalized Procrustes analysis to examine the psychological constructs underlying societal uptake of 15 key applications of nanotechnology drawn from different areas (e.g. medicine, agriculture and environment, chemical, food, military, sports, and cosmetics). Based on expert judgement, the main factors influencing societal response to different applications of nanotechnology will be the extent to which applications are perceived to be beneficial, useful, and necessary, and how 'real' and physically close to the end-user these applications are perceived to be by the public.

  16. Factors influencing societal response of nanotechnology: an expert stakeholder analysis

    Energy Technology Data Exchange (ETDEWEB)

    Gupta, Nidhi, E-mail: nidhi.gupta@wur.nl; Fischer, Arnout R. H., E-mail: arnout.fischer@wur.nl; Lans, Ivo A. van der, E-mail: Ivo.vanderLans@wur.nl [Wageningen University, Marketing and Consumer Behaviour Group (Netherlands); Frewer, Lynn J., E-mail: lynn.frewer@newcastle.ac.uk [Newcastle University, School of Agriculture, Food and Rural Development (United Kingdom)

    2012-05-15

    Nanotechnology can be described as an emerging technology and, as has been the case with other emerging technologies such as genetic modification, different socio-psychological factors will potentially influence societal responses to its development and application. These factors will play an important role in how nanotechnology is developed and commercialised. This article aims to identify expert opinion on factors influencing societal response to applications of nanotechnology. Structured interviews with experts on nanotechnology from North West Europe were conducted using repertory grid methodology in conjunction with generalized Procrustes analysis to examine the psychological constructs underlying societal uptake of 15 key applications of nanotechnology drawn from different areas (e.g. medicine, agriculture and environment, chemical, food, military, sports, and cosmetics). Based on expert judgement, the main factors influencing societal response to different applications of nanotechnology will be the extent to which applications are perceived to be beneficial, useful, and necessary, and how 'real' and physically close to the end-user these applications are perceived to be by the public.

  17. Factors influencing societal response of nanotechnology: an expert stakeholder analysis

    International Nuclear Information System (INIS)

    Gupta, Nidhi; Fischer, Arnout R. H.; Lans, Ivo A. van der; Frewer, Lynn J.

    2012-01-01

    Nanotechnology can be described as an emerging technology and, as has been the case with other emerging technologies such as genetic modification, different socio-psychological factors will potentially influence societal responses to its development and application. These factors will play an important role in how nanotechnology is developed and commercialised. This article aims to identify expert opinion on factors influencing societal response to applications of nanotechnology. Structured interviews with experts on nanotechnology from North West Europe were conducted using repertory grid methodology in conjunction with generalized Procrustes analysis to examine the psychological constructs underlying societal uptake of 15 key applications of nanotechnology drawn from different areas (e.g. medicine, agriculture and environment, chemical, food, military, sports, and cosmetics). Based on expert judgement, the main factors influencing societal response to different applications of nanotechnology will be the extent to which applications are perceived to be beneficial, useful, and necessary, and how 'real' and physically close to the end-user these applications are perceived to be by the public.

  18. Sensitivity analysis on ultimate strength of aluminium stiffened panels

    DEFF Research Database (Denmark)

    Rigo, P.; Sarghiuta, R.; Estefen, S.

    2003-01-01

    This paper presents the results of an extensive sensitivity analysis carried out by the Committee III.1 "Ultimate Strength" of ISSC?2003 in the framework of a benchmark on the ultimate strength of aluminium stiffened panels. Previously, different benchmarks were presented by ISSC committees on ul...

  19. Accuracy of Dynamic and Acoustic Analysis of Lightweight Panel Structures

    DEFF Research Database (Denmark)

    Kirkegaard, Poul Henning; Dickow, Kristoffer Ahrens; Andersen, Lars Vabbersgaard

    2012-01-01

    in such buildings is important. In the lowfrequency range, prediction of sound and vibration in building structures may be achieved by finite-element analysis (FEA). The aim of this paper is to compare the two commercial codes ABAQUS and ANSYS for FEA of an acoustic-structural coupling in a timber lightweight panel...

  20. Two-dimensional analysis of shallow sandwich panels

    DEFF Research Database (Denmark)

    Skvortsov, V; Bozhevolnaya, Elena

    2001-01-01

    condition is ensured via an introduction of the Airy's function and two potentials including a potential of the vortex-type. The technique of the numerical solution is based on a combination of the solutions by Navier and Levy. Numerical analysis is carried out for the panel that is simply supported along...

  1. Panel discussion on: trends in optical and radio data analysis

    International Nuclear Information System (INIS)

    Albrecht, R.

    1985-01-01

    The panel begins by placing optical and radio astronomy into the same category and then goes on to discuss a wide variety of hardware and software approaches which have been or can be utilized in the analysis of optical and radio data

  2. Sensitivity analysis of sandwich panels with rectangular openings

    Science.gov (United States)

    Chuda-Kowalska, Monika; Malendowski, Michal

    2018-01-01

    Sandwich panels, composed of thin metal sheets and a thick, anisotropic foam core, are considered in the paper. These lightweight structures are frequently weakened by cut-outs and various openings, what is the subject of the present analysis. Due to a complex behavior of such structures, there are no universal, acceptable design rules, that take into account factors related to the kind of modifications that made the panel weaker. In this paper, the problem of the influence of two factors on the mechanical response of sandwich panel is considered, namely: the influence of opening location and type of the load. Additionally, the influence of stiffener, in the form of window frame, is considered. Finally, selected results obtained from FE analyses are compared with the experimental results carried out by the authors and some conclusions are drawn.

  3. Expert system for the CPCS-initiated trip analysis

    International Nuclear Information System (INIS)

    Sohn, Sedo; Im, Inyoung; Kuh, Jungeui

    1991-01-01

    In Yonggwang nuclear units 3 and 4, the core protection calculator system (CPCS) performs various protection logics against many transients and certain accidents. The CPCS is a real-time computer system calculating the departure from nucleate boiling ratio (DNBR), and local power density, and other protection logics. It takes process variables such as neutron flux, hot-leg temperature, cold-leg temperature, control element assembly positions, and reactor coolant pump shaft speed. Since the CPCS protection logics are quite complex, it is difficult for an operator to tell immediately which parameter is the major cause of the reactor trip. Thus, whenever the reactor trip signal is generated, the process input variables and calculated results, including selected intermediate variables, are frozen in the specified computer memory for later analysis. These frozen variables are called the trip buffer. Analysis of the trip buffer requires an expert in the CPCS and related documents containing algorithms and a data base for algorithms. The Trip Buffer Analysis Program (TBAP) is an expert system that pinpoints the causes of the CPCS initiated reactor trip, thus relieving the operator from the burden of analyzing the trip buffer

  4. Aflibercept treatment for neovascular AMD beyond the first year: consensus recommendations by a UK expert roundtable panel, 2017 update

    Directory of Open Access Journals (Sweden)

    Patel PJ

    2017-11-01

    Full Text Available Praveen J Patel,1 Helen Devonport,2 Sobha Sivaprasad,1 Adam H Ross,3 Gavin Walters,4 Richard P Gale,5 Andrew J Lotery,6 Sajjad Mahmood,7 James S Talks,8 Jackie Napier9 1National Institute for Health Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK; 2The Ophthalmology Department, Bradford Royal Infirmary, Bradford, UK; 3The Ophthalmology Department, Bristol Eye Hospital, Bristol, UK; 4Department of Ophthalmology, Harrogate District Hospital, Harrogate, UK; 5The Ophthalmology Department, The York Hospital and Department of Health Sciences, University of York, York, UK; 6Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK; 7Manchester Royal Eye Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; 8Newcastle Eye Centre, Royal Victoria Infirmary, Newcastle upon Tyne, UK; 9Medical Affairs, Bayer plc, Reading, Berkshire, UK Abstract: National recommendations on continued administration of aflibercept solution for injection after the first year of treatment for neovascular age-related macular degeneration (nAMD have been developed by an expert panel of UK retina specialists, based on clinician experience and treatment outcomes seen in year 2. The 2017 update reiterates that the treatment goal is to maintain or improve the macular structural and functional gains achieved in year 1 while attempting to reduce or minimize the treatment burden, recognizing the need for ongoing treatment. At the end of year 1 (ie, the decision visit at month 11, two treatment options should be considered: do not extend the treatment interval and maintain fixed 8-weekly dosing, or extend the treatment interval using a treat-and-extend regimen up to a maximum 12 weeks. Criteria for considering not extending the treatment interval are persistent macular fluid with stable

  5. Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and methyl methacrylate/glycol dimethacrylate crosspolymer.

    Science.gov (United States)

    Becker, Lillian C; Bergfeld, Wilma F; Belsito, Donald V; Hill, Ronald A; Klaassen, Curtis D; Liebler, Daniel C; Marks, James G; Shank, Ronald C; Slaga, Thomas J; Snyder, Paul W; Andersen, F Alan

    2011-05-01

    Polymethyl methacrylate (PMMA) and related cosmetic ingredients methyl methacrylate crosspolymer and methyl methacrylate/glycol dimethacrylate crosspolymer are polymers that function as film formers and viscosity-increasing agents in cosmetics. The Food and Drug Administration (FDA) determination of safety of PMMA use in several medical devices, which included human and animal safety data, was used as the basis of safety of PMMA and related polymers in cosmetics by the Cosmetic Ingredient Review (CIR) Expert Panel.  The PMMA used in cosmetics is substantially the same as in medical devices.  The Panel concluded that these ingredients are safe as cosmetic ingredients in the practices of use and concentrations as described in this safety assessment.

  6. SUMMARY AND RECOMMENDATIONS OF THE EXPERT PANEL OVERSIGHT COMMITTEE MEETING ON DOUBLE-SHELL TANK CORROSION MONITORING AND TESTING HELD AUGUST 4-5 2008

    Energy Technology Data Exchange (ETDEWEB)

    BOOMER KD

    2009-01-08

    The Expert Panel Oversight Committee (EPOC) on Double-Shell Tank Corrosion Monitoring and Testing has been overseeing the Fiscal Year FY 2008 experimental program being performed at CC Technologies (CCT) to optimize the chemistry control for corrosion limits in Double-Shell Tanks (DSTs). The EPOC met at the M & D Professional Services Conference Facility on August 4 and 5, 2008 to discuss various aspects of that responsibility including FY 2009 planning. Formal presentations were made to update the EPOC on the these subjects.

  7. Comprehensive review of the evidence regarding the effectiveness of community-based primary health care in improving maternal, neonatal and child health: 8. summary and recommendations of the Expert Panel.

    Science.gov (United States)

    Black, Robert E; Taylor, Carl E; Arole, Shobha; Bang, Abhay; Bhutta, Zulfiqar A; Chowdhury, A Mushtaque R; Kirkwood, Betty R; Kureshy, Nazo; Lanata, Claudio F; Phillips, James F; Taylor, Mary; Victora, Cesar G; Zhu, Zonghan; Perry, Henry B

    2017-06-01

    The contributions that community-based primary health care (CBPHC) and engaging with communities as valued partners can make to the improvement of maternal, neonatal and child health (MNCH) is not widely appreciated. This unfortunate reality is one of the reasons why so few priority countries failed to achieve the health-related Millennium Development Goals by 2015. This article provides a summary of a series of articles about the effectiveness of CBPHC in improving MNCH and offers recommendations from an Expert Panel for strengthening CBPHC that were formulated in 2008 and have been updated on the basis of more recent evidence. An Expert Panel convened to guide the review of the effectiveness of community-based primary health care (CBPHC). The Expert Panel met in 2008 in New York City with senior UNICEF staff. In 2016, following the completion of the review, the Panel considered the review's findings and made recommendations. The review consisted of an analysis of 661 unique reports, including 583 peer-reviewed journal articles, 12 books/monographs, 4 book chapters, and 72 reports from the gray literature. The analysis consisted of 700 assessments since 39 were analyzed twice (once for an assessment of improvements in neonatal and/or child health and once for an assessment in maternal health). The Expert Panel recommends that CBPHC should be a priority for strengthening health systems, accelerating progress in achieving universal health coverage, and ending preventable child and maternal deaths. The Panel also recommends that expenditures for CBPHC be monitored against expenditures for primary health care facilities and hospitals and reflect the importance of CBPHC for averting mortality. Governments, government health programs, and NGOs should develop health systems that respect and value communities as full partners and work collaboratively with them in building and strengthening CBPHC programs - through engagement with planning, implementation (including the

  8. Computationally efficient analysis and optimisation of stiffened thin-walled panels in shear

    CSIR Research Space (South Africa)

    Viljoen, A

    2005-05-01

    Full Text Available The computationally efficient analysis and optimum design of the buckling of stiffened, thin-walled shear panels in aircraft structures is discussed. Namely, the postbuckling behaviour of these panels is assessed using the iterative procedure...

  9. Patient/Family Education for Newly Diagnosed Pediatric Oncology Patients: Consensus Recommendations from a Children’s Oncology Group Expert Panel

    Science.gov (United States)

    Landier, Wendy; Ahern, JoAnn; Barakat, Lamia P.; Bhatia, Smita; Bingen, Kristin M.; Bondurant, Patricia G.; Cohn, Susan L.; Dobrozsi, Sarah K.; Haugen, Maureen; Herring, Ruth Anne; Hooke, Mary C.; Martin, Melissa; Murphy, Kathryn; Newman, Amy R.; Rodgers, Cheryl C.; Ruccione, Kathleen S.; Sullivan, Jeneane; Weiss, Marianne; Withycombe, Janice; Yasui, Lise; Hockenberry, Marilyn

    2016-01-01

    There is a paucity of data to support evidence-based practices in the provision of patient/family education in the context of a new childhood cancer diagnosis. Since the majority of children with cancer are treated on pediatric oncology clinical trials, lack of effective patient/family education has the potential to negatively affect both patient and clinical trial outcomes. The Children’s Oncology Group Nursing Discipline convened an interprofessional expert panel from within and beyond pediatric oncology to review available and emerging evidence and develop expert consensus recommendations regarding harmonization of patient/family education practices for newly diagnosed pediatric oncology patients across institutions. Five broad principles, with associated recommendations, were identified by the panel, including recognition that (1) in pediatric oncology, patient/family education is family-centered; (2) a diagnosis of childhood cancer is overwhelming and the family needs time to process the diagnosis and develop a plan for managing ongoing life demands before they can successfully learn to care for the child; (3) patient/family education should be an interprofessional endeavor with 3 key areas of focus: (a) diagnosis/treatment, (b) psychosocial coping, and (c) care of the child; (4) patient/family education should occur across the continuum of care; and (5) a supportive environment is necessary to optimize learning. Dissemination and implementation of these recommendations will set the stage for future studies that aim to develop evidence to inform best practices, and ultimately to establish the standard of care for effective patient/family education in pediatric oncology. PMID:27385664

  10. Evaluation of Tuberculosis Diagnostics in Children: 1. Proposed Clinical Case Definitions for Classification of Intrathoracic Tuberculosis Disease. Consensus From an Expert Panel

    Science.gov (United States)

    Graham, Stephen M.; Ahmed, Tahmeed; Amanullah, Farhana; Browning, Renee; Cardenas, Vicky; Casenghi, Martina; Cuevas, Luis E.; Gale, Marianne; Gie, Robert P.; Grzemska, Malgosia; Handelsman, Ed; Hatherill, Mark; Hesseling, Anneke C.; Jean-Philippe, Patrick; Kampmann, Beate; Kabra, Sushil Kumar; Lienhardt, Christian; Lighter-Fisher, Jennifer; Madhi, Shabir; Makhene, Mamodikoe; Marais, Ben J.; McNeeley, David F.; Menzies, Heather; Mitchell, Charles; Modi, Surbhi; Mofenson, Lynne; Musoke, Philippa; Nachman, Sharon; Powell, Clydette; Rigaud, Mona; Rouzier, Vanessa; Starke, Jeffrey R.; Swaminathan, Soumya; Wingfield, Claire

    2012-01-01

    There is a critical need for improved diagnosis of tuberculosis in children, particularly in young children with intrathoracic disease as this represents the most common type of tuberculosis in children and the greatest diagnostic challenge. There is also a need for standardized clinical case definitions for the evaluation of diagnostics in prospective clinical research studies that include children in whom tuberculosis is suspected but not confirmed by culture of Mycobacterium tuberculosis. A panel representing a wide range of expertise and child tuberculosis research experience aimed to develop standardized clinical research case definitions for intrathoracic tuberculosis in children to enable harmonized evaluation of new tuberculosis diagnostic technologies in pediatric populations. Draft definitions and statements were proposed and circulated widely for feedback. An expert panel then considered each of the proposed definitions and statements relating to clinical definitions. Formal group consensus rules were established and consensus was reached for each statement. The definitions presented in this article are intended for use in clinical research to evaluate diagnostic assays and not for individual patient diagnosis or treatment decisions. A complementary article addresses methodological issues to consider for research of diagnostics in children with suspected tuberculosis. PMID:22448023

  11. Transient Thermal Testing and Analysis of a Thermally Insulating Structural Sandwich Panel

    Science.gov (United States)

    Blosser, Max L.; Daryabeigi, Kamran; Bird, Richard K.; Knutson, Jeffrey R.

    2015-01-01

    A core configuration was devised for a thermally insulating structural sandwich panel. Two titanium prototype panels were constructed to illustrate the proposed sandwich panel geometry. The core of one of the titanium panels was filled with Saffil(trademark) alumina fibrous insulation and the panel was tested in a series of transient thermal tests. Finite element analysis was used to predict the thermal response of the panel using one- and two-dimensional models. Excellent agreement was obtained between predicted and measured temperature histories.

  12. Finite element analysis of bending performance on polyurethane composite panel

    Science.gov (United States)

    Jia, Minli; Li, Hongqiao; Wang, Xiaoming

    2017-09-01

    The finite element analysis model of polyurethane composite panel (simply named PCP) is established by using ABAQUS software. In view of the PCPs made of different thickness of surface board, their bending performance is carried out on finite element analysis, and the load-deflection curves which come from it are compared with the experimental results. The results show that the values between finite element analysis and experiment agree well with each other. It can be deduced that the established finite element model is fit to simulate the bending test of PCPs. The simulation not only has certain reference significance to the optimal design for the bending performance of PCPs, but also to the choice of PCPs in the practical project.

  13. Estimates of the solubilities of waste element radionuclides in waste isolation pilot plant brines: A report by the expert panel on the source term

    Energy Technology Data Exchange (ETDEWEB)

    Hobart, D.E. [Sandia National Labs., Albuquerque, NM (United States)]|[Glenn T. Seaborg Inst. for Transactinium Science, Livermore, CA (United States); Bruton, C.J. [Sandia National Labs., Albuquerque, NM (United States)]|[Lawrence Livermore National Lab., CA (United States). Earth Sciences Dept.; Millero, F.J. [Sandia National Labs., Albuquerque, NM (United States)]|[Univ. of Miami, FL (United States). Rosenstiel School of Marine and Atmospheric Science; Chou, I.M. [Sandia National Labs., Albuquerque, NM (United States)]|[Geological Survey, Reston, VA (United States); Trauth, K.M.; Anderson, D.R. [Sandia National Labs., Albuquerque, NM (United States)

    1996-05-01

    Evaluation of the long-term performance of the WIPP includes estimation of the cumulative releases of radionuclide elements to the accessible environment. Nonradioactive lead is added because of the large quantity expected in WIPP wastes. To estimate the solubilities of these elements in WIPP brines, the Panel used the following approach. Existing thermodynamic data were used to identify the most likely aqueous species in solution through the construction of aqueous speciation diagrams. Existing thermodynamic data and expert judgment were used to identify potential solubility-limiting solid phases. Thermodynamic data were used to calculate the activities of the radionuclide aqueous species in equilibrium with each solid. Activity coefficients of the radionuclide-bearing aqueous species were estimated using Pitzer`s equations. These activity coefficients were then used to calculate the concentration of each radionuclide at the 0.1 and 0.9 fractiles. The 0.5 fractile was chosen to represent experimental data with activity coefficient corrections as described above. Expert judgment was used to develop the 0.0, 0.25, 0.75, and 1.0 fractiles by considering the sensitivity of solubility to the potential variability in the composition of brine and gas, and the extent of waste contaminants, and extending the probability distributions accordingly. The results were used in the 1991 and 1992 performance assessment calculations. 68 refs.

  14. Estimates of the solubilities of waste element radionuclides in waste isolation pilot plant brines: A report by the expert panel on the source term

    International Nuclear Information System (INIS)

    Hobart, D.E.; Bruton, C.J.; Trauth, K.M.; Anderson, D.R.

    1996-05-01

    Evaluation of the long-term performance of the WIPP includes estimation of the cumulative releases of radionuclide elements to the accessible environment. Nonradioactive lead is added because of the large quantity expected in WIPP wastes. To estimate the solubilities of these elements in WIPP brines, the Panel used the following approach. Existing thermodynamic data were used to identify the most likely aqueous species in solution through the construction of aqueous speciation diagrams. Existing thermodynamic data and expert judgment were used to identify potential solubility-limiting solid phases. Thermodynamic data were used to calculate the activities of the radionuclide aqueous species in equilibrium with each solid. Activity coefficients of the radionuclide-bearing aqueous species were estimated using Pitzer's equations. These activity coefficients were then used to calculate the concentration of each radionuclide at the 0.1 and 0.9 fractiles. The 0.5 fractile was chosen to represent experimental data with activity coefficient corrections as described above. Expert judgment was used to develop the 0.0, 0.25, 0.75, and 1.0 fractiles by considering the sensitivity of solubility to the potential variability in the composition of brine and gas, and the extent of waste contaminants, and extending the probability distributions accordingly. The results were used in the 1991 and 1992 performance assessment calculations. 68 refs

  15. Global Proteome Analysis of the NCI-60 Cell Line Panel

    Directory of Open Access Journals (Sweden)

    Amin Moghaddas Gholami

    2013-08-01

    Full Text Available The NCI-60 cell line collection is a very widely used panel for the study of cellular mechanisms of cancer in general and in vitro drug action in particular. It is a model system for the tissue types and genetic diversity of human cancers and has been extensively molecularly characterized. Here, we present a quantitative proteome and kinome profile of the NCI-60 panel covering, in total, 10,350 proteins (including 375 protein kinases and including a core cancer proteome of 5,578 proteins that were consistently quantified across all tissue types. Bioinformatic analysis revealed strong cell line clusters according to tissue type and disclosed hundreds of differentially regulated proteins representing potential biomarkers for numerous tumor properties. Integration with public transcriptome data showed considerable similarity between mRNA and protein expression. Modeling of proteome and drug-response profiles for 108 FDA-approved drugs identified known and potential protein markers for drug sensitivity and resistance. To enable community access to this unique resource, we incorporated it into a public database for comparative and integrative analysis (http://wzw.tum.de/proteomics/nci60.

  16. Two-dimensional finite element analysis of rectangular panel with hole using NICE/SPAR

    Science.gov (United States)

    Razzaq, Zia; Prasad, Venkatesh; Darbhamulla, Siva Prasad

    1987-01-01

    A panel 30 in. long, 11.5 in. wide, with a 2.0 in. diameter hole at the center is analyzed. Since a two-dimensional analysis is conducted, the thickness of the panel is taken as unity. Owing to the symmetry, it is sufficient to analyze only one fourth of the panel with appropriate boundary conditions.

  17. How to avoid the inappropriate use of antibiotics in upper respiratory tract infections? A position statement from an expert panel.

    Science.gov (United States)

    Piltcher, Otávio Bejzman; Kosugi, Eduardo Macoto; Sakano, Eulalia; Mion, Olavo; Testa, José Ricardo Gurgel; Romano, Fabrizio Ricci; Santos, Marco Cesar Jorge; Di Francesco, Renata Cantisani; Mitre, Edson Ibrahim; Bezerra, Thiago Freire Pinto; Roithmann, Renato; Padua, Francini Greco; Valera, Fabiana Cardoso Pereira; Lubianca Neto, José Faibes; Sá, Leonardo Conrado Barbosa; Pignatari, Shirley Shizue Nagata; Avelino, Melissa Ameloti Gomes; Caixeta, Juliana Alves de Souza; Anselmo-Lima, Wilma Terezinha; Tamashiro, Edwin

    2018-02-25

    Bacterial resistance burden has increased in the past years, mainly due to inappropriate antibiotic use. Recently it has become an urgent public health concern due to its impact on the prolongation of hospitalization, an increase of total cost of treatment and mortality associated with infectious disease. Almost half of the antimicrobial prescriptions in outpatient care visits are prescribed for acute upper respiratory infections, especially rhinosinusitis, otitis media, and pharyngotonsillitis. In this context, otorhinolaryngologists play an important role in orienting patients and non-specialists in the utilization of antibiotics rationally and properly in these infections. To review the most recent recommendations and guidelines for the use of antibiotics in acute otitis media, acute rhinosinusitis, and pharyngotonsillitis, adapted to our national reality. A literature review on PubMed database including the medical management in acute otitis media, acute rhinosinusitis, and pharyngotonsillitis, followed by a discussion with a panel of specialists. Antibiotics must be judiciously prescribed in uncomplicated acute upper respiratory tract infections. The severity of clinical presentation and the potential risks for evolution to suppurative and non-suppurative complications must be taken into 'consideration'. Periodic revisions on guidelines and recommendations for treatment of the main acute infections are necessary to orient rationale and appropriate use of antibiotics. 'Continuous medical education and changes in physicians' and patients' behavior are required to modify the paradigm that all upper respiratory infection needs antibiotic therapy, minimizing the consequences of its inadequate and inappropriate use. Copyright © 2018 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  18. Buckling Design and Analysis of a Payload Fairing One-Sixth Cylindrical Arc-Segment Panel

    Science.gov (United States)

    Kosareo, Daniel N.; Oliver, Stanley T.; Bednarcyk, Brett A.

    2013-01-01

    Design and analysis results are reported for a panel that is a 16th arc-segment of a full 33-ft diameter cylindrical barrel section of a payload fairing structure. Six such panels could be used to construct the fairing barrel, and, as such, compression buckling testing of a 16th arc-segment panel would serve as a validation test of the buckling analyses used to design the fairing panels. In this report, linear and nonlinear buckling analyses have been performed using finite element software for 16th arc-segment panels composed of aluminum honeycomb core with graphiteepoxy composite facesheets and an alternative fiber reinforced foam (FRF) composite sandwich design. The cross sections of both concepts were sized to represent realistic Space Launch Systems (SLS) Payload Fairing panels. Based on shell-based linear buckling analyses, smaller, more manageable buckling test panel dimensions were determined such that the panel would still be expected to buckle with a circumferential (as opposed to column-like) mode with significant separation between the first and second buckling modes. More detailed nonlinear buckling analyses were then conducted for honeycomb panels of various sizes using both Abaqus and ANSYS finite element codes, and for the smaller size panel, a solid-based finite element analysis was conducted. Finally, for the smaller size FRF panel, nonlinear buckling analysis was performed wherein geometric imperfections measured from an actual manufactured FRF were included. It was found that the measured imperfection did not significantly affect the panel's predicted buckling response

  19. Interobserver and Intraobserver Variability in pH-Impedance Analysis between 10 Experts and Automated Analysis

    DEFF Research Database (Denmark)

    Loots, Clara M; van Wijk, Michiel P; Blondeau, Kathleen

    2011-01-01

    OBJECTIVE: To determine interobserver and intraobserver variability in pH-impedance interpretation between experts and accuracy of automated analysis (AA). STUDY DESIGN: Ten pediatric 24-hour pH-impedance tracings were analyzed by 10 observers from 7 world groups and with AA. Detection of gastroe...

  20. Final report of the cosmetic ingredient review expert panel on the safety assessment of Polyisobutene and Hydrogenated Polyisobutene as used in cosmetics.

    Science.gov (United States)

    2008-01-01

    controls. Neither Polyisobutene nor Hydrogenated Polyisobutene were ocular irritants, nor were they dermal irritants or sensitizers. Polyisobutene was not comedogenic in a rabbit ear study. Polyisobutene did not induce transformation in the Syrian hamster embryo (SHE) cell transformation assay, but did enhance 3-methylcholanthrene-induced transformation of C3H/10T1/2 cells. In a carcinogenicity study in mice, Polyisobutene was not carcinogenic, nor did it promote the carcinogenicity of 7,12-dimethylbenz(alpha)anthracene. Clinical patch tests uncovered no evidence of dermal irritation and repeat-insult patch tests with a product containing 4% Hydrogenated Polyisobutene or 1.44% Hydrogenated Polyisobutene found no reactions greater than slight erythema. These products also were not phototoxic or photoallergenic. The product containing 4% Hydrogenated Polyisobutene was not an ocular irritant in a clinical test. The Cosmetic Ingredient Review (CIR) Expert Panel recognized that there are data gaps regarding use and concentration of these ingredients. However, the overall information available on the types of products in which these ingredients are used and at what concentrations indicate a pattern of use, which was considered by the Expert Panel in assessing safety. Although there is an absence of dermal absorption data for Polyisobutene and Hydrogenated Polyisobutene, the available octanol water partition coefficient data and the low solubility in water suggest very slow absorption, so additional data are not needed. Gastrointestinal absorption is also not a major concern due to the low solubility of these chemicals. Although one in vitro study did report that Polyisobutene did promote cellular transformation, a mouse study did not find evidence of tumor promotion. Because lifetime exposure studies using rats and dogs exposed to Polybutene failed to demonstrate any carcinogenic or tumor promotion effect, and a three-generation reproductive/developmental toxicity study produced

  1. Economic Growth and Budget Constraints: EU Countries Panel Data Analysis

    Directory of Open Access Journals (Sweden)

    Zimčík Petr

    2016-06-01

    Full Text Available The aim of this paper is to identify the impacts of different taxes and expenditures on economic growth. The research is focused on 20 selected European Union Member States. These countries are equally divided into four groups based on their average tax burden as presented in the World Tax Index. A comparison of fiscal attributes among these groups is important for the analysis. Annual government finance data from the years 1995 to 2012 are used for an empirical study. The indicators observed are real GDP change, the composition and volume of total government expenditures, tax quotas of individual taxes and total budget balance. These indicators are used within an endogenous growth model together with capital stock and an approximation of human capital. A panel regression with fixed effects is used as an analytic tool. The main results are that an increase in social contributions, property, production and personal income tax quotas has an adverse effect on economic growth.

  2. Introduction to Analysis and Design of Plate Panels

    DEFF Research Database (Denmark)

    Jensen, Jørgen Juncher; Lützen, Marie

    The present notes cover plate theory dealing with bending, vibrations, elastic buckling and ultimate strength. The plate structures considered are isotropic, orthotropic and stiffened plates made of metallic materials. The main objective of the notes is to give an introduction to plates and plate...... to the theory of shells is included. There are many relevant textbooks on linear analysis of plates. The most recent is Szilard (2004), which contains a large number of examples (1024 pages in total plus a CD with numerous results). Plate failure is covered very well in Hughes (1988) (with the focus on plate...... panels used in ship structures) and Jones (1997) (dealing mostly with impact responses). Finally, a recent book also including shell structures is Ventsel and Krauthammer (2001). Compared to the textbooks cited above the present treatment puts more emphasis on stiffened plates than usually seen. However...

  3. Characterization of Photovoltaic Panels by means of Thermograph Analysis

    Directory of Open Access Journals (Sweden)

    Noe Samano

    2016-01-01

    Full Text Available Solar panels have become attractive in order to generate and supply electricity in commercial and residential applications. Their increased module efficiencies have caused not only a massive production but also a sensible drop on sale prices. Methods of characterization, instrumentation for in situ measurements, defect monitoring, process control, and performance are required. A temperature characterization method by means of thermograph analysis is exposed in this paper. The method was applied to multicrystalline modules, and the characterization was made with respect to two different variables, first a thermal transient and second a characterization with respect to the current. The method is useful in order to detect hot spots caused by mismatch conditions in electrical parameters. The description, results, and limitations of the proposed method are discussed.

  4. Maintenance treatment of advanced non-small-cell lung cancer: results of an international expert panel meeting of the Italian association of thoracic oncology.

    Science.gov (United States)

    Gridelli, Cesare; de Marinis, Filippo; Di Maio, Massimo; Ardizzoni, Andrea; Belani, Chandra P; Cappuzzo, Federico; Ciardiello, Fortunato; Fidias, Panagiotis; Paz-Ares, Luis; Perrone, Francesco; Pirker, Robert; De Petris, Luigi; Stahel, Rolf

    2012-06-01

    Several randomized trials have recently investigated the role of maintenance treatment for patients with advanced non-small-cell lung cancer (NSCLC) with responding or stable disease after completion of first-line chemotherapy. Maintenance strategy has relevant implications in terms of potential toxicity, logistics and costs, and all of these aspects should be taken into account, together with the magnitude of benefit for the patient. In order to assess the strengths and limitations of available evidence, to help clinical practice, and to suggest priorities for future clinical research, the Italian Association of Thoracic Oncology (AIOT) organized an International Experts Panel Meeting on maintenance treatment of advanced NSCLC, which took place in Sperlonga (Italy) in May 2011. Based on the available evidence, panelists agreed that maintenance therapy represents a treatment option in advanced NSCLC. Maintenance should be discussed with patients not progressed after 4-6 cycles of first-line chemotherapy, who are fit (performance status 0-1) and without persistent chemotherapy-induced toxicity. Patients need to be well informed about potential advantages and disadvantages of accepting additional therapy without a "treatment-free period". Two different strategies, switch or continuation maintenance, are supported by available evidence. At the moment, there is no direct comparison between switch maintenance and continuation maintenance. For future trials, the panel recommends the use of overall survival as the primary endpoint, with pre-defined second-line treatment. Translational research is essential to identify predictive factors, and should be performed, whenever feasible, in order to achieve treatment optimization with proper patient selection. Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.

  5. Performance analysis of PV panel under varying surface temperature

    Directory of Open Access Journals (Sweden)

    Kumar Tripathi Abhishek

    2018-01-01

    Full Text Available The surface temperature of PV panel has an adverse impact on its performance. The several electrical parameters of PV panel, such as open circuit voltage, short circuit current, power output and fill factor depends on the surface temperature of PV panel. In the present study, an experimental work was carried out to investigate the influence of PV panel surface temperature on its electrical parameters. The results obtained from this experimental study show a significant reduction in the performance of PV panel with an increase in panel surface temperature. A 5W PV panel experienced a 0.4% decrease in open circuit voltage for every 1°C increase in panel surface temperature. Similarly, there was 0.6% and 0.32% decrease in maximum power output and in fill factor, respectively, for every 1°C increase in panel surface temperature. On the other hand, the short circuit current increases with the increase in surface temperature at the rate of 0.09%/°C.

  6. Finite Element Analysis of the SciFi-Nomex-Sandwich Panels

    CERN Document Server

    Schultz von Dratzig, Arndt

    2015-01-01

    A finite element analysis of the SciFi-Nomex-sandwich panels has been carried out in order to investigate their thermo-mechanical properties. This does not include the cooling of the silicon photomultipliers but is restricted to the panels themselves. Two kinds of panels have been considered: panels with 40 mm thickness and panels with 50 mm thickness. Both versions are equipped with mats of six layers of scintillating fibers. The analyses were carried out for a series of mechanical and thermal loads which might occur during the production or installation of the detector. For both versions the stiffnesses prove to be sufficient and no critical stresses or strains are found.

  7. FE analysis of unstiffened and stiffened corrugated panels subjected to blast loading

    Energy Technology Data Exchange (ETDEWEB)

    Wijaya, Christian; Kim, Byung Tak [Pukyong National University, Busan (Korea, Republic of)

    2011-12-15

    This paper presents the results of a dynamic analysis on unstiffened and stiffened corrugated panels subjected to hydrocarbon explosion. A parametric study is also conducted on simplified models of the stiffened corrugated panels considering the effect of stiffeners on the compressive flange under different loading levels. The 1/2 symmetry of corrugated panels is modeled. This numerical study is performed using NX Nastran version 7.5. The unstiffened panel produces localized buckling at the center of corrugation and large permanent deformation by increasing the peak pressure. The stiffened panels suppress the structural response, and the vee stiffeners are structurally more effective than the round ones.

  8. Performance analysis of tracked panel according to predicted global radiation

    International Nuclear Information System (INIS)

    Chang, T.P.

    2009-01-01

    In this paper, the performance of a south facing single-axis tracked panel was analyzed according to global radiation predicted by empirical model. Mathematic expressions appropriate for single-axis tracking system were derived to calculate the radiation on it. Instantaneous increments of solar energy collected by the tracked panel relative to fixed panel are illustrated. The validity of the empirical model to Taiwan area will also be examined with the actual irradiation data observed in Taipei. The results are summarized as follows: the gains made by the tracked panel relative to a fixed panel are between 20.0% and 33.9% for four specified days of year, between 20.9% and 33.2% for the four seasons and 27.6% over the entire year. For latitudes below 65 deg., the yearly optimal tilt angle of a fixed panel is close to 0.8 times latitude, the irradiation ratio of the tracked panel to the fixed panel is about 1.3, which are smaller than the corresponding values calculated from extraterrestrial radiation, suggesting us that the installation angle should be adjusted toward a flatter angle and that the gain of the tracked panel will reduce while it works in cloudy climate or in air pollution environment. Although the captured radiation increases with the maximal rotation angle of panel, but the benefit on the global radiation case is still not so good as that on extraterrestrial radiation case. The irradiation data observed is much less than the data predicted by the empirical model, however the trend of fitting curve to the observed data is somewhat in agreement with that to the predicted one; the yearly gain is 14.3% when a tracked panel is employed throughout the year.

  9. Sound transmission analysis of MR fluid based-circular sandwich panels: Experimental and finite element analysis

    Science.gov (United States)

    Hemmatian, Masoud; Sedaghati, Ramin

    2017-11-01

    Magnetorheological Fluids (MR) have been recently utilized in sandwich panels to provide variable stiffness and damping to effectively control vibrations. In this study, the sound transmission behavior of MR based-sandwich panels is investigated through development of an efficient finite element model. A clamped circular sandwich panel with elastic face sheets and MR Fluid as the core layer has been considered. A finite element model utilizing circular and annular elements has been developed to derive the governing equations of motion in the finite element form. The transverse velocity is then calculated and utilized to obtain the sound radiated from the panel and subsequently the sound transmission loss. In order to validate the simulated results, a test setup including two anechoic spaces and an electro-magnet has been designed and fabricated. The magnetic flux density generated inside the electromagnet is simulated using magneto-static finite element analysis and validated with the measured magnetic flux density using Gaussmeter. The results from magneto-static analysis is used to derive an approximate polynomial function to evaluate the magnetic flux density as a function of the plate's radius and applied current. The STL and first axisymmetric natural frequency of the MR sandwich panels with aluminum face sheets are simulated and compared with those obtained experimentally. Finally, a parametric study on the effect of applied magnetic field, the thickness of the core layer and the thickness of face sheets on the STL and natural frequency of the adaptive sandwich panel are presented.

  10. Spectral information interpretation of X-ray analysis based on expert system approach

    International Nuclear Information System (INIS)

    Drakunov, Yu.M.; Lezin, A.N.; Pukha, N.P.; Silachev, I.Yu.

    2000-01-01

    An expert subprogram for automated identification for element composition of the samples of different nature according to the result of energy-dispersive X-ray fluorescence analysis is elaborated, The flowchart of the subprogram is presented, brief description of expert system structure and its algorithm is given. (author)

  11. Panel 3

    OpenAIRE

    Lin, Jizhen; Hafren, Lena; Kerschner, Joseph; Li, Jian-Dong; Brown, Steve; Zheng, Qing Y.; Preciado, Diego; Nakamura, Yoshihisa; Huang, Qiuhong; Zhang, Yan

    2017-01-01

    Objective. The objective is to perform a comprehensive review of the literature up to 2015 on the genetics and precision medicine relevant to otitis media. Data Sources. PubMed database of the National Library of Medicine. Review Methods. Two subpanels were formed comprising experts in the genetics and precision medicine of otitis media. Each of the panels reviewed the literature in their respective fields and wrote draft reviews. The reviews were shared with all panel members, and a merged d...

  12. Performance of the FilmArray® blood culture identification panel utilized by non-expert staff compared with conventional microbial identification and antimicrobial resistance gene detection from positive blood cultures.

    Science.gov (United States)

    McCoy, Morgan H; Relich, Ryan F; Davis, Thomas E; Schmitt, Bryan H

    2016-07-01

    Utilization of commercially available rapid platforms for microbial identification from positive blood cultures is useful during periods of, or in laboratories with, limited expert staffing. We compared the results of the FilmArray® BCID Panel performed by non-expert technologists to those of conventional methods for organism identification performed by skilled microbiologists. Within 8 h of signalling positive by a continuous monitoring blood culture system, positive bottles were analysed by the FilmArray BCID Panel. Data from these analyses were compared to standard-of-care testing, which included conventional and automated methods. To gauge the ease of use of the BCID Panel by non-expert staff, technologists unfamiliar with diagnostic bacteriology performed the testing without prior knowledge of the Gram stain results, or even whether organisms were detected. Identifications of 172/200 (86 %) positive blood cultures using the BCID Panel were consistent with identifications provided by standard-of-care methods. Standard-of-care testing identified organisms in 20 positive blood cultures, which were not represented on the BCID Panel. Seven (3.5 %) blood cultures demonstrated a discrepancy between the methods, which could not be attributed to either a lack of representation on the panel or unclear separate detection of organisms in a mixed blood culture of a shared genus or grouping of organisms, e.g. Staphylococcus or Enterobacteriaceae . One (0.5 %) blood culture yielded invalid results on two separate panels, so it was eliminated from the study. The easy-to-use FilmArray® technology shows good correlation with blood culture identification and antibiotic resistance detection performed by conventional methods. This technology may be particularly useful in laboratories with limited staffing or limited technical expertise.

  13. Prospective analysis of agricultural bioinoculants in Colombia: an expert consultation

    Directory of Open Access Journals (Sweden)

    Diana Corina Zambrano Moreno

    2015-07-01

    Full Text Available Productivity and sustainability of agriculture in Colombia can be influenced positively through the use of biodiversity for the production of bioinoculants. They were analyzed in the medium and long term, the future scenarios generated by the regulations involved in the technological advancement of bio-products through the application of a Delphi survey, with the participation of 23 experts in bio-products, taking into account the three dimensions sustainable development. Based on this study, it was found that 65% of the experts believe that the impact of innovation and technological development of the use of bio- products in agricultural production, has a high economic impact with a significant level of agreement (≥0.05. Additionally, 65% selected as the best scenario, in which conditions that promote greater development, access and application of bio-products, so that the rate of adoption of technology is increased by the producers to make. In conclusion, beyond the level of technological development is necessary to revise the legislative process for the marketing of bio-products, it was clear that the future success of the industry in the production of biological products depend on the management of innovative enterprises, efficient marketing thereof, education and transfer to producers and the progress of the investigation.

  14. Common problems in the elicitation and analysis of expert opinion affecting probabilistic safety assessments

    Energy Technology Data Exchange (ETDEWEB)

    Meyer, M.A.; Booker, J.M.

    1990-01-01

    Expert opinion is frequently used in probabilistic safety assessment (PSA), particularly in estimating low probability events. In this paper, we discuss some of the common problems encountered in eliciting and analyzing expert opinion data and offer solutions or recommendations. The problems are: that experts are not naturally Bayesian. People fail to update their existing information to account for new information as it becomes available, as would be predicted by the Bayesian philosophy; that experts cannot be fully calibrated. To calibrate experts, the feedback from the known quantities must be immediate, frequent, and specific to the task; that experts are limited in the number of things that they can mentally juggle at a time to 7 {plus minus} 2; that data gatherers and analysts can introduce bias by unintentionally causing an altering of the expert's thinking or answers; that the level of detail the data, or granularity, can affect the analyses; and the conditioning effect poses difficulties in gathering and analyzing of the expert data. The data that the expert gives can be conditioned on a variety of factors that can affect the analysis and the interpretation of the results. 31 refs.

  15. Didactic trainer. Solar photovoltaic panels analysis; Analisis de paneles solares fotovoltaicos

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, J.; Ruiz, J.; Gorjon, J.; Quiles, J. A.; Cavaller, N.; Bodega, J.; Alonso-Abella, M.; Chenlo, F.

    2009-07-01

    The Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT) and the Instituto de Ensenanza Secundaria Virgen de la Paloma (IES VP), through their respective Metrology and Electricity-Electronics departments, have established a first agreement of co-operation with the aim of introducing and enhancing the solar photovoltaic energy within the professional teachings field. This agreements is a result of the compromise of designing entirely in the Electricity-electronics department of IES VP a didactic trainer prototype which enables to analyze cells and photovoltaic panels, all under the supervision and logistic-technical support of CIEMAT Photovoltaic Laboratory. (Author)

  16. Tracheotomy in the intensive care unit: Guidelines from a French expert panel: The French Intensive Care Society and the French Society of Anaesthesia and Intensive Care Medicine.

    Science.gov (United States)

    Trouillet, Jean-Louis; Collange, Olivier; Belafia, Fouad; Blot, François; Capellier, Gilles; Cesareo, Eric; Constantin, Jean-Michel; Demoule, Alexandre; Diehl, Jean-Luc; Guinot, Pierre-Grégoire; Jegoux, Franck; L'Her, Erwan; Luyt, Charles-Edouard; Mahjoub, Yazine; Mayaux, Julien; Quintard, Hervé; Ravat, François; Vergez, Sébastien; Amour, Julien; Guillot, Max

    2018-03-17

    Tracheotomy is widely used in intensive care units, albeit with great disparities between medical teams in terms of frequency and modality. Indications and techniques are, however, associated with variable levels of evidence based on inhomogeneous or even contradictory literature. Our aim was to conduct a systematic analysis of the published data in order to provide guidelines. We present herein recommendations for the use of tracheotomy in adult critically ill patients developed using the grading of recommendations assessment, development and evaluation (GRADE) method. These guidelines were conducted by a group of experts from the French Intensive Care Society (Société de réanimation de langue française) and the French Society of Anesthesia and Intensive Care Medicine (Société francaise d'anesthésie réanimation) with the participation of the French Emergency Medicine Association (Société française de médecine d'urgence), the French Society of Otorhinolaryngology. Sixteen experts and two coordinators agreed to consider questions concerning tracheotomy and its practical implementation. Five topics were defined: indications and contraindications for tracheotomy in intensive care, tracheotomy techniques in intensive care, modalities of tracheotomy in intensive care, management of patients undergoing tracheotomy in intensive care, and decannulation in intensive care. The summary made by the experts and the application of GRADE methodology led to the drawing up of 8 formal guidelines, 10 recommendations, and 3 treatment protocols. Among the 8 formal guidelines, 2 have a high level of proof (Grade 1±) and 6 a low level of proof (Grade 2±). For the 10 recommendations, GRADE methodology was not applicable and instead 10 expert opinions were produced. Copyright © 2018 The Author(s). Published by Elsevier Masson SAS.. All rights reserved.

  17. Analysis and test of superplastically formed titanium hat-stiffened panels under compression

    Science.gov (United States)

    Davis, Randall C.; Royster, Dick M.; Bales, Thomas T.

    1987-01-01

    Four hat-stiffened titanium panels with two different stiffener configurations were fabricated by superplastic forming/weld brazing and tested under a moderately heavy compressive load. The panels had the same overall dimensions but differed in the shape of the hat-stiffener webs; three panels had stiffeners with flat webs and the other panel had stiffeners with beaded webs. Analysis indicated that the local buckling strain of the flat stiffener web was considerably lower than the general panel buckling strain or cap buckling strain. The analysis also showed that beading the webs of the hat stiffeners removed them as the critical element for local buckling and improved the buckling strain of the panels. The analytical extensional stiffness and failure loads compared very well with experimental results.

  18. Contextual determinants of induced abortion: a panel analysis

    Directory of Open Access Journals (Sweden)

    Mar Llorente-Marrón

    2016-01-01

    Full Text Available ABSTRACT OBJECTIVE Analyze the contextual and individual characteristics that explain the differences in the induced abortion rate, temporally and territorially. METHODS We conducted an econometric analysis with panel data of the influence of public investment in health and per capita income on induced abortion as well as a measurement of the effect of social and economic factors related to the labor market and reproduction: female employment, immigration, adolescent fertility and marriage rate. The empirical exercise was conducted with a sample of 22 countries in Europe for the 2001-2009 period. RESULTS The great territorial variability of induced abortion was the result of contextual and individual socioeconomic factors. Higher levels of national income and investments in public health reduce its incidence. The following sociodemographic characteristics were also significant regressors of induced abortion: female employment, civil status, migration, and adolescent fertility. CONCLUSIONS Induced abortion responds to sociodemographic patterns, in which the characteristics of each country are essential. The individual and contextual socioeconomic inequalities impact significantly on its incidence. Further research on the relationship between economic growth, labor market, institutions and social norms is required to better understand its transnational variability and to reduce its incidence.

  19. Contextual determinants of induced abortion: a panel analysis.

    Science.gov (United States)

    Llorente-Marrón, Mar; Díaz-Fernández, Montserrat; Méndez-Rodríguez, Paz

    2016-01-01

    Analyze the contextual and individual characteristics that explain the differences in the induced abortion rate, temporally and territorially. We conducted an econometric analysis with panel data of the influence of public investment in health and per capita income on induced abortion as well as a measurement of the effect of social and economic factors related to the labor market and reproduction: female employment, immigration, adolescent fertility and marriage rate. The empirical exercise was conducted with a sample of 22 countries in Europe for the 2001-2009 period. The great territorial variability of induced abortion was the result of contextual and individual socioeconomic factors. Higher levels of national income and investments in public health reduce its incidence. The following sociodemographic characteristics were also significant regressors of induced abortion: female employment, civil status, migration, and adolescent fertility. Induced abortion responds to sociodemographic patterns, in which the characteristics of each country are essential. The individual and contextual socioeconomic inequalities impact significantly on its incidence. Further research on the relationship between economic growth, labor market, institutions and social norms is required to better understand its transnational variability and to reduce its incidence.

  20. A Panel Analysis Of UK Industrial Company Failure

    OpenAIRE

    Natalia Isachenkova; John Hunter

    2002-01-01

    We examine the failure determinants for large quoted UK industrials using a panel data set comprising 539 firms observed over the period 1988-93. The empirical design employs data from company accounts and is based on Chamberlain’s conditional binomial logit model, which allows for unobservable, firm-specific, time-invariant factors associated with failure risk. We find a noticeable degree of heterogeneity across the sample companies. Our panel results show that, after controll...

  1. Development of an Expert Judgement Elicitation and Calibration Methodology for Risk Analysis in Conceptual Vehicle Design

    Science.gov (United States)

    Unal, Resit; Keating, Charles; Conway, Bruce; Chytka, Trina

    2004-01-01

    A comprehensive expert-judgment elicitation methodology to quantify input parameter uncertainty and analysis tool uncertainty in a conceptual launch vehicle design analysis has been developed. The ten-phase methodology seeks to obtain expert judgment opinion for quantifying uncertainties as a probability distribution so that multidisciplinary risk analysis studies can be performed. The calibration and aggregation techniques presented as part of the methodology are aimed at improving individual expert estimates, and provide an approach to aggregate multiple expert judgments into a single probability distribution. The purpose of this report is to document the methodology development and its validation through application to a reference aerospace vehicle. A detailed summary of the application exercise, including calibration and aggregation results is presented. A discussion of possible future steps in this research area is given.

  2. A review of traditional and novel treatments for seizures in autism spectrum disorder: Findings from a systematic review and expert panel.

    Directory of Open Access Journals (Sweden)

    Richard Eugene Frye

    2013-09-01

    Full Text Available Despite the fact that seizures are commonly associated with autism spectrum disorder (ASD, the effectiveness of treatments for seizures has not been well studied in individuals with ASD. This manuscript reviews both traditional and novel treatments for seizures associated with ASD. Studies were selected by systematically searching major electronic databases and by a panel of experts that treat ASD individuals. Only a few anti-epileptic drugs (AEDs have undergone carefully controlled trials in ASD, but these trials examined outcomes other than seizures. Several lines of evidence point to valproate, lamotrigine and levetiracetam as the most effective and tolerable AEDs for individuals with ASD. Limited evidence supports the use of traditional non-AED treatments, such as the ketogenic and modified Atkins diet, multiple subpial transections and immunomodulation and neurofeedback treatments. Although specific treatments may be more appropriate for specific genetic and metabolic syndromes associated with ASD and seizures, there are few studies which have documented the effectiveness of treatments for seizures for specific syndromes. Limited evidence supports L-carnitine, multivitamins and N-acetyl-L-cysteine in mitochondrial disease and dysfunction, folinic acid in cerebral folate abnormalities and early treatment with vigabatrin in tuberous sclerosis complex. Finally, there is limited evidence for a number of novel treatments, particularly magnesium with pyridoxine, omega-3 fatty acids, the gluten-free casein-free diet and transcranial magnetic simulation. Zinc and L-carnosine are potential novel treatments supported by basic research but not clinical studies. This review demonstrates the wide variety of treatments used to treat seizures in individuals with ASD as well as the striking lack of clinical trials performed to support the use these treatments. Additional studies concerning these treatments for controlling seizures in individuals with ASD

  3. La praxi avaluadora de l’acreditació des del panel d’experts: una autoetnografia de cas en la Comunitat de Madrid

    Directory of Open Access Journals (Sweden)

    Juan Arturo Rubio Arostegui

    2017-10-01

    Full Text Available L’acreditació es defineix per les agències de qualitat de l’Espai Europeu d’Educació Superior com un element clau en la gestió de la qualitat i la millora contínua dels processos d’ensenyament-aprenentatge a la universitat. Aquesta pràctica institucional comença a desenvolupar-se en 2014 a Espanya. L’article il·lustra el cas de l’agència de qualitat del sistema universitari madrileny, com a anàlisi de cas, per mitjà de l’experiència del propi autor com a panelista en l’acreditació dels títols. Metodològicament es parteix de l’enfocament autoetnogràfic i de la teoria de l’interaccionisme simbòlic, per poder desvetlar i analitzar el procés i les cultures avaluatives. Per a fer-ho, es tracen dos eixos d’anàlisis: els resultats d’aprenentatge i el valor de la recerca en els recursos humans adscrits al títol, tots dos considerats per les agències de qualitat com a criteris crítics perquè l’informe final del títol siga favorable. A través d’aquests dos criteris es plantegen les interaccions que es donen en el panel d’experts en les diferents fases del procés d’acreditació.

  4. Nonlinear Analysis and Post-Test Correlation for a Curved PRSEUS Panel

    Science.gov (United States)

    Gould, Kevin; Lovejoy, Andrew E.; Jegley, Dawn; Neal, Albert L.; Linton, Kim, A.; Bergan, Andrew C.; Bakuckas, John G., Jr.

    2013-01-01

    The Pultruded Rod Stitched Efficient Unitized Structure (PRSEUS) concept, developed by The Boeing Company, has been extensively studied as part of the National Aeronautics and Space Administration's (NASA s) Environmentally Responsible Aviation (ERA) Program. The PRSEUS concept provides a light-weight alternative to aluminum or traditional composite design concepts and is applicable to traditional-shaped fuselage barrels and wings, as well as advanced configurations such as a hybrid wing body or truss braced wings. Therefore, NASA, the Federal Aviation Administration (FAA) and The Boeing Company partnered in an effort to assess the performance and damage arrestments capabilities of a PRSEUS concept panel using a full-scale curved panel in the FAA Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. Testing was conducted in the FASTER facility by subjecting the panel to axial tension loads applied to the ends of the panel, internal pressure, and combined axial tension and internal pressure loadings. Additionally, reactive hoop loads were applied to the skin and frames of the panel along its edges. The panel successfully supported the required design loads in the pristine condition and with a severed stiffener. The panel also demonstrated that the PRSEUS concept could arrest the progression of damage including crack arrestment and crack turning. This paper presents the nonlinear post-test analysis and correlation with test results for the curved PRSEUS panel. It is shown that nonlinear analysis can accurately calculate the behavior of a PRSEUS panel under tension, pressure and combined loading conditions.

  5. Laser welded steel sandwich panel bridge deck development : finite element analysis and stake weld strength tests.

    Science.gov (United States)

    2009-09-01

    This report summarizes the analysis of laser welded steel sandwich panels for use in bridge structures and : static testing of laser stake welded lap shear coupons. Steel sandwich panels consist of two face sheets : connected by a relatively low-dens...

  6. Solar maximum mission panel jettison analysis remote manipulator system

    Science.gov (United States)

    Bauer, R. B.

    1980-01-01

    A study is presented of the development of the Remote Manipulator System (RMS) configurations for jettison of the solar panels on the Solar Maximum Mission/Multimission Satellite. A valid RMS maneuver between jettison configurations was developed. Arm and longeron loads and effector excursions due to the solar panel jettison were determined to see if they were within acceptable limits. These loads and end effector excursions were analyzed under two RMS modes, servos active in position hold submode, and in the brakes on mode.

  7. Analysis of the drilling sound component from expert performance in a maxillo-facial surgery

    DEFF Research Database (Denmark)

    Hoffmann, Pablo F.; Gosselin, Florian; Taha, Farid

    2009-01-01

    Auditory displays can have a great potential in surgical simulators that aim at training skills associated to the correct interpretation of auditory information. Here, we present preliminary results in the analysis of the sound produced by the drilling procedure in a maxillo-facial surgery when p...... performed by expert surgeons. The motivation of this work is to find relevant acoustic parameters that allow for an efficient synthesis method of auditory displays so that they can effectively convey information on expert surgical drilling....

  8. Predicting Consumer Effort in Finding and Paying for Health Care: Expert Interviews and Claims Data Analysis.

    Science.gov (United States)

    Long, Sandra; Monsen, Karen A; Pieczkiewicz, David; Wolfson, Julian; Khairat, Saif

    2017-10-12

    For consumers to accept and use a health care information system, it must be easy to use, and the consumer must perceive it as being free from effort. Finding health care providers and paying for care are tasks that must be done to access treatment. These tasks require effort on the part of the consumer and can be frustrating when the goal of the consumer is primarily to receive treatments for better health. The aim of this study was to determine the factors that result in consumer effort when finding accessible health care. Having an understanding of these factors will help define requirements when designing health information systems. A panel of 12 subject matter experts was consulted and the data from 60 million medical claims were used to determine the factors contributing to effort. Approximately 60 million claims were processed by the health care insurance organization in a 12-month duration with the population defined. Over 292 million diagnoses from claims were used to validate the panel input. The results of the study showed that the number of people in the consumer's household, number of visits to providers outside the consumer's insurance network, number of adjusted and denied medical claims, and number of consumer inquiries are a proxy for the level of effort in finding and paying for care. The effort level, so measured and weighted per expert panel recommendations, differed by diagnosis. This study provides an understanding of how consumers must put forth effort when engaging with a health care system to access care. For higher satisfaction and acceptance results, health care payers ideally will design and develop systems that facilitate an understanding of how to avoid denied claims, educate on the payment of claims to avoid adjustments, and quickly find providers of affordable care. ©Sandra Long, Karen A. Monsen, David Pieczkiewicz, Julian Wolfson, Saif Khairat. Originally published in JMIR Medical Informatics (http://medinform.jmir.org), 12.10.2017.

  9. A data analysis expert system for large established distributed databases

    Science.gov (United States)

    Gnacek, Anne-Marie; An, Y. Kim; Ryan, J. Patrick

    1987-01-01

    A design for a natural language database interface system, called the Deductively Augmented NASA Management Decision support System (DANMDS), is presented. The DANMDS system components have been chosen on the basis of the following considerations: maximal employment of the existing NASA IBM-PC computers and supporting software; local structuring and storing of external data via the entity-relationship model; a natural easy-to-use error-free database query language; user ability to alter query language vocabulary and data analysis heuristic; and significant artificial intelligence data analysis heuristic techniques that allow the system to become progressively and automatically more useful.

  10. Cross-sectional dependence in panel data analysis

    NARCIS (Netherlands)

    Sarafidis, V.; Wansbeek, T.J.

    2012-01-01

    This article provides an overview of the existing literature on panel data models with error cross-sectional dependence (CSD). We distinguish between weak and strong CSD and link these concepts to the spatial and factor structure approaches. We consider estimation under strong and weak exogeneity of

  11. Inflation convergence within the European Union: a panel data analysis

    Czech Academy of Sciences Publication Activity Database

    Kočenda, Evžen; Papell, D. H.

    1997-01-01

    Roč. 2, č. 3 (1997), s. 189-198 ISSN 1076-9307 Keywords : inflation convergence * European Union * panel data Subject RIV: AH - Economics http://search.ebscohost.com/login.aspx?direct=true&db=bth&AN=16616418&site=ehost-live

  12. Analysis of the Romanian employment rate. A panel data approach

    Directory of Open Access Journals (Sweden)

    Larisa APARASCHIVEI

    2012-07-01

    Full Text Available This paper examines the evolution of the employment rate in Romania. I employ a panel data approach, considering the 42 counties, in order to explore the relationship between labour productivity, average earnings, investments and employment. The results reveal a positive impact of the average wage and gross investments and a negative impact of the labour productivity on employment rate.

  13. Test/semi-empirical analysis of a carbon/epoxy fabric stiffened panel

    Science.gov (United States)

    Spier, E. E.; Anderson, J. A.

    1990-01-01

    The purpose of this work-in-progress is to present a semi-empirical analysis method developed to predict the buckling and crippling loads of carbon/epoxy fabric blade stiffened panels in compression. This is a hand analysis method comprised of well known, accepted techniques, logical engineering judgements, and experimental data that results in conservative solutions. In order to verify this method, a stiffened panel was fabricated and tested. Both the best and analysis results are presented.

  14. Prototype of an expert system to help nuclide identification in gamma spectrum analysis

    International Nuclear Information System (INIS)

    Jayanthi, Kasi Annapurna; Corcuera, Raquel Paviotti; Oliveira, Gina Maira B.

    1995-01-01

    This report describes the development and use of IDENT, prototype of an expert system that helps the researcher to identify radionuclides in gamma-ray spectroscopy. Normally the method adopted by the researcher is iterative, time consuming and becomes complicated in the analysis of large and complex gamma-ray spectra. The present expert system is based on the knowledge transmitted by expert and specialists in this area and the results show that it is helpful for researches who perform nuclide identification through gamma-ray spectroscopy. The gamma-ray spectrum of a material sample with about 140 peaks would take about a week or two be analysed by a specialist. The same task can be done in a few minutes using this expert system. (author). 14 refs., 2 figs

  15. Analysis of experts' perception of the effectiveness of teaching methods

    Science.gov (United States)

    Kindra, Gurprit S.

    1984-03-01

    The present study attempts to shed light on the perceptions of business educators regarding the effectiveness of six methodologies in achieving Gagné's five learning outcomes. Results of this study empirically confirm the oft-stated contention that no one method is globally effective for the attainment of all objectives. Specifically, business games, traditional lecture, and case study methods are perceived to be most effective for the learning of application, knowledge acquisition, and analysis and application, respectively.

  16. European sea bass gill pathology after exposure to cadmium and terbuthylazine: expert versus fractal analysis.

    Science.gov (United States)

    Manera, M; Giari, L; Depasquale, J A; Dezfuli, B S

    2016-03-01

    The objective of this study was to compare expert versus fractal analysis as new methods to evaluate branchial lamellar pathology in European sea bass Dicentrarchus labrax (Linnaeus, 1758) experimentally exposed to cadmium and to terbuthylazine. In particular, guided expert quantitative and fractal analysis were performed on selected images from semithin sections to test possible differences according to exposure class (unexposed, cadmium exposed, or terbuthylazine exposed) and the discrimination power of the two methods. With respect to guided expert quantitative analysis, the following elementary pathological features were assessed according to pre-determined cover classes: 'epithelial lifting', 'epithelial shrinkage', 'epithelial swelling', 'pillar cells coarctation', 'pillar cells detachment', 'channels fusion', 'chloride cells swelling' and 'chloride cells invasion'. Considering fractal analysis, DB (box dimension), DM (mass dimension), Dx (mean fractal dimension) as fractal dimensions and lacunarity from DM and Dx scan types were calculated both from the outlined and skeletonized (one pixel wide lines) images. Despite significant differences among experimental classes, only expert analysis provided good discrimination with correct classification of 91.7 % of the original cases, and of 87.5 % of the cross-validated cases, with a sensitivity of 95.45 % and 91.3 %, respectively, and a specificity of 75 % in both cases. Guided expert quantitative analysis appears to be a reliable method to objectively characterize fish gill pathology and may represent a powerful tool in environmental biomonitoring to ensure proper standardization and reproducibility. Though fractal analysis did not equal the discrimination power of the expert method, it certainly warrants further study to evaluate local variations in complexity or possible multiple scaling rules. © 2015 The Authors Journal of Microscopy © 2015 Royal Microscopical Society.

  17. How Macroeconomic Imbalances Interact? Evidence from a Panel VAR Analysis

    OpenAIRE

    Blaise Gnimassoun; Valérie Mignon

    2013-01-01

    This paper aims at investigating the interactions between three key macroeconomic imbalances, namely Global imbalances,current-account discrepancies (external imbalances), output gaps (internal imbalances), and exchange-rate misalignments. To this end, we rely on the estimation of a panel VAR model for a sample of 22 industrialized countries over the 1980-2011 period. Our findings show that macroeconomic imbalances strongly interact through a causal relationship. We evidence that if current-a...

  18. Analysis and selection criteria of photovoltaic panels for DHW

    OpenAIRE

    Nemś Artur; Nemś Magdalena

    2017-01-01

    The article discusses the issue of selecting power of photovoltaic panels for heating domestic hot water (DHW). It is indicated that the price of installation is several times lower than a couple of years ago. The authors present a method of selecting system power depending on DHW installation’s heating requirements and the building’s energy consumption. This algorithm allows for central heating requirements that are crucial in case of heating a building with solid fuel appliances. The descri...

  19. Nonlinearities in productivity growth: a semi-parametric panel analysis

    OpenAIRE

    Azomahou, T.T.; Diene, B.; Diene, M.

    2012-01-01

    We use country panel data spanning over 1998-2008 for both developed and developing countries to study the productivity growth when countries are close to the technology frontier. Relying on a semi-parametric generalized additive model, we estimate both reduced and structural forms for total factor productivity growth. We consider three measurements of frontier: the economy with the highest level of productivity growth, the world productivity growth and the productivity growth of the USA. We ...

  20. Food parenting practices for 5 to 12 year old children: a concept map analysis of parenting and nutrition experts input.

    Science.gov (United States)

    O'Connor, Teresia M; Mâsse, Louise C; Tu, Andrew W; Watts, Allison W; Hughes, Sheryl O; Beauchamp, Mark R; Baranowski, Tom; Pham, Truc; Berge, Jerica M; Fiese, Barbara; Golley, Rebecca; Hingle, Melanie; Kremers, Stef P J; Rhee, Kyung E; Skouteris, Helen; Vaughn, Amber

    2017-09-11

    Parents are an important influence on children's dietary intake and eating behaviors. However, the lack of a conceptual framework and inconsistent assessment of food parenting practices limits our understanding of which food parenting practices are most influential on children. The aim of this study was to develop a food parenting practice conceptual framework using systematic approaches of literature reviews and expert input. A previously completed systematic review of food parenting practice instruments and a qualitative study of parents informed the development of a food parenting practice item bank consisting of 3632 food parenting practice items. The original item bank was further reduced to 110 key food parenting concepts using binning and winnowing techniques. A panel of 32 experts in parenting and nutrition were invited to sort the food parenting practice concepts into categories that reflected their perceptions of a food parenting practice conceptual framework. Multi-dimensional scaling produced a point map of the sorted concepts and hierarchical cluster analysis identified potential solutions. Subjective modifications were used to identify two potential solutions, with additional feedback from the expert panel requested. The experts came from 8 countries and 25 participated in the sorting and 23 provided additional feedback. A parsimonious and a comprehensive concept map were developed based on the clustering of the food parenting practice constructs. The parsimonious concept map contained 7 constructs, while the comprehensive concept map contained 17 constructs and was informed by a previously published content map for food parenting practices. Most of the experts (52%) preferred the comprehensive concept map, while 35% preferred to present both solutions. The comprehensive food parenting practice conceptual map will provide the basis for developing a calibrated Item Response Modeling (IRM) item bank that can be used with computerized adaptive testing

  1. Analysis of irradiance losses on a soiled photovoltaic panel using contours

    International Nuclear Information System (INIS)

    Pulipaka, Subrahmanyam; Kumar, Rajneesh

    2016-01-01

    Highlights: • An irradiance loss factor to quantify relationship between irradiance, tilt angle and power of soiled panel is proposed. • Artificial soiling experiment and Sieve analysis are performed to obtain data for developing contours. • Contour analysis is used to observe the deviation in power of a soiled panel from clean panel. • A correction factor to calculate power of a soiled panel is proposed. • The correction factor is expressed in terms of soil particle size composition present on panel. - Abstract: This paper introduces an irradiance loss factor that quantifies the relationship between irradiance, tilt angle and power output of a soiled panel with the soil particle size composition. Artificial soiling experiments were performed using four soil samples at irradiance levels between 200 and 1200 W/m 2 at 18 tilt angles. Biharmonic interpolation was used to develop power contours in terms of irradiance and tilt angle from experimentally obtained data. These contours were compared with ideal ones of a clean panel to observe deviation in the nature of contours for a soiled panel. A correction factor in terms of particle size composition (as a coefficient to tilt angle) was proposed to calculate power output of a tilted soiled panel. The angular loss on a panel with soil sample containing 150 μm particle size in abundance was observed to be 22% and for sample containing 75 μm particles in majority, the loss is 24%. Presence of 300 μm particle size in abundance causes a 23.7% loss, while 52% angular loss was observed for soil with highest composition of less than 75 μm particle size.

  2. Expert judgment in analysis of human and organizational behaviour at nuclear power plants

    International Nuclear Information System (INIS)

    Reiman, L.

    1994-12-01

    Probabilistic safety assessment (PSA) of a nuclear power plant includes an assessment of the probability of each event sequence that can lead to a reactor core damage and of their consequences. Despite increasing maturity of PSA methods, there are still several problems in their use. These include the assessment of human reliability and the impact of organizational factors on plant safety. The assessment of both these issues is based on expert judgment. Therefore, the use of expert judgment in analysis of human and organizational behaviour was studied theoretically and in practical case studies in this thesis. Human errors were analysed in two case studies. In the first study cognitive actions of control room operators were analysed. For this purpose methods were developed for the qualitative and quantitative phases of the analysis. Errors of test and maintenance personnel were analysed in the second case study. Especially the dependence of errors between sequential tasks performed in redundant subsystems of a safety system was studied. A method to assess organizational behaviour was developed and applied in the third case study. The three case studies demonstrated that expert judgment can be used in the analysis of human reliability and organizational behaviour taking into account the observations made and the remarks presented in the study. However, significant uncertainties are related with expert judgment. Recommendations are presented concerning the use of different methods. Also, some insights are presented into how reliance on expert judgment could be reduced. (241 refs., 20 figs., 36 tabs.)

  3. Expert judgment in analysis of human and organizational behaviour at nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Reiman, L. [Finnish Centre for Radiation and Nuclear Safety, Helsinki (Finland). Dept. of Nuclear Safety

    1994-12-01

    Probabilistic safety assessment (PSA) of a nuclear power plant includes an assessment of the probability of each event sequence that can lead to a reactor core damage and of their consequences. Despite increasing maturity of PSA methods, there are still several problems in their use. These include the assessment of human reliability and the impact of organizational factors on plant safety. The assessment of both these issues is based on expert judgment. Therefore, the use of expert judgment in analysis of human and organizational behaviour was studied theoretically and in practical case studies in this thesis. Human errors were analysed in two case studies. In the first study cognitive actions of control room operators were analysed. For this purpose methods were developed for the qualitative and quantitative phases of the analysis. Errors of test and maintenance personnel were analysed in the second case study. Especially the dependence of errors between sequential tasks performed in redundant subsystems of a safety system was studied. A method to assess organizational behaviour was developed and applied in the third case study. The three case studies demonstrated that expert judgment can be used in the analysis of human reliability and organizational behaviour taking into account the observations made and the remarks presented in the study. However, significant uncertainties are related with expert judgment. Recommendations are presented concerning the use of different methods. Also, some insights are presented into how reliance on expert judgment could be reduced. (241 refs., 20 figs., 36 tabs.).

  4. FaSTR DNA: a new expert system for forensic DNA analysis.

    Science.gov (United States)

    Power, Timothy; McCabe, Brendan; Harbison, Sally Ann

    2008-06-01

    The automation of DNA profile analysis of reference and crime samples continues to gain pace driven in part by a realisation by the criminal justice system of the positive impact DNA technology can have in aiding in the solution of crime and the apprehension of suspects. Expert systems to automate the profile analysis component of the process are beginning to be developed. In this paper, we report the validation of a new expert system FaSTR DNA, an expert system suitable for the analysis of DNA profiles from single source reference samples and from crime samples. We compare the performance of FaSTR DNA with that of other equivalent systems, GeneMapper ID v3.2 (Applied Biosystems, Foster City, CA) and FSS-i(3) v4 (The Forensic Science Service((R)) DNA expert System Suite FSS-i(3), Forensic Science Service, Birmingham, UK) with GeneScan Analysis v3.7/Genotyper v3.7 software (Applied Biosystems, Foster City, CA, USA) with manual review. We have shown that FaSTR DNA provides an alternative solution to automating DNA profile analysis and is appropriate for implementation into forensic laboratories. The FaSTR DNA system was demonstrated to be comparable in performance to that of GeneMapper ID v3.2 and superior to that of FSS-i(3) v4 for the analysis of DNA profiles from crime samples.

  5. Use of an expert system data analysis manager for space shuttle main engine test evaluation

    Science.gov (United States)

    Abernethy, Ken

    1988-01-01

    The ability to articulate, collect, and automate the application of the expertise needed for the analysis of space shuttle main engine (SSME) test data would be of great benefit to NASA liquid rocket engine experts. This paper describes a project whose goal is to build a rule-based expert system which incorporates such expertise. Experiential expertise, collected directly from the experts currently involved in SSME data analysis, is used to build a rule base to identify engine anomalies similar to those analyzed previously. Additionally, an alternate method of expertise capture is being explored. This method would generate rules inductively based on calculations made using a theoretical model of the SSME's operation. The latter rules would be capable of diagnosing anomalies which may not have appeared before, but whose effects can be predicted by the theoretical model.

  6. Unitized Stiffened Composite Textile Panels: Manufacturing, Characterization, Experiments, and Analysis

    Science.gov (United States)

    Kosztowny, Cyrus Joseph Robert

    Use of carbon fiber textiles in complex manufacturing methods creates new implementations of structural components by increasing performance, lowering manufacturing costs, and making composites overall more attractive across industry. Advantages of textile composites include high area output, ease of handling during the manufacturing process, lower production costs per material used resulting from automation, and provide post-manufacturing assembly mainstreaming because significantly more complex geometries such as stiffened shell structures can be manufactured with fewer pieces. One significant challenge with using stiffened composite structures is stiffener separation under compression. Axial compression loading conditions have frequently observed catastrophic structural failure due to stiffeners separating from the shell skin. Characterizing stiffener separation behavior is often costly computationally and experimentally. The objectives of this research are to demonstrate unitized stiffened textile composite panels can be manufactured to produce quality test specimens, that existing characterization techniques applied to state-of-the-art high-performance composites provide valuable information in modeling such structures, that the unitized structure concept successfully removes stiffener separation as a primary structural failure mode, and that modeling textile material failure modes are sufficient to accurately capture postbuckling and final failure responses of the stiffened structures. The stiffened panels in this study have taken the integrally stiffened concept to an extent such that the stiffeners and skin are manufactured at the same time, as one single piece, and from the same composite textile layers. Stiffener separation is shown to be removed as a primary structural failure mode for unitized stiffened composite textile panels loaded under axial compression well into the postbuckling regime. Instead of stiffener separation, a material damaging and

  7. Drivers of Fund Performance: A Panel Data Analysis

    OpenAIRE

    Franz Fuerst; George Matysiak

    2009-01-01

    The principle aim of this research is to elucidate the factors driving the total rate of return of non-listed funds using a panel data analytical framework. In line with previous results, we find that core funds exhibit lower yet more stable returns than value-added and, in particular, opportunistic funds, both cross-sectionally and over time. After taking into account overall market exposure, as measured by weighted market returns, the excess returns of value-added and opportunity funds are ...

  8. Economic growth and military expenditure linkages: a panel data analysis

    Directory of Open Access Journals (Sweden)

    Ahmed Shahid

    2015-12-01

    Full Text Available This paper has made an attempt to examine relationship between military expenditure and economic growth using 56 country panel data spanning over 1995—2011. Panel fixed effect model has been estimated for all 56 countries and sub-groups classified on the basis of World Bank income criteria. The results of this study indicate a positive effect of military expenditure on economic growth but this positive effect is negligible compared to the alternative uses of scare resources on non-military expenditure. Thus, the effect of military expenditure on economic growth is very low compared to the effect of expenditure on capital formation, hence military expenditure as a sub-optimal means of increasing economic growth compared to alternative uses of government spending on formation of fixed capital. This study raises an important argument of huge opportunity cost of military expenditure. The present study concludes that the boosting of economic growth through higher military expenditure is neither effective nor efficient way of achieving higher growth in the economy.

  9. Looking for landmarks: the role of expert review and bibliometric analysis in evaluating scientific publication outputs.

    Directory of Open Access Journals (Sweden)

    Liz Allen

    Full Text Available OBJECTIVE: To compare expert assessment with bibliometric indicators as tools to assess the quality and importance of scientific research papers. METHODS AND MATERIALS: Shortly after their publication in 2005, the quality and importance of a cohort of nearly 700 Wellcome Trust (WT associated research papers were assessed by expert reviewers; each paper was reviewed by two WT expert reviewers. After 3 years, we compared this initial assessment with other measures of paper impact. RESULTS: Shortly after publication, 62 (9% of the 687 research papers were determined to describe at least a 'major addition to knowledge' -6 were thought to be 'landmark' papers. At an aggregate level, after 3 years, there was a strong positive association between expert assessment and impact as measured by number of citations and F1000 rating. However, there were some important exceptions indicating that bibliometric measures may not be sufficient in isolation as measures of research quality and importance, and especially not for assessing single papers or small groups of research publications. CONCLUSION: When attempting to assess the quality and importance of research papers, we found that sole reliance on bibliometric indicators would have led us to miss papers containing important results as judged by expert review. In particular, some papers that were highly rated by experts were not highly cited during the first three years after publication. Tools that link expert peer reviews of research paper quality and importance to more quantitative indicators, such as citation analysis would be valuable additions to the field of research assessment and evaluation.

  10. Analysis and Design of CLL Resonant Converter for Solar Panel-battery Systems

    OpenAIRE

    D.Ramasubramanian; C.Nagarajan; M.Muruganandam

    2012-01-01

    This paper presents a CLL resonant converter with DSP based Fuzzy Logic Controller (FLC) for solar panel to battery charging system. The mathematical model of the converters has been developed and simulated using MATLAB. The state space model of the converter is developed; it is used to analysis the steady state stability of the system. The aim of the proposed converter is to regulate and control of the output voltage from the solar panel voltage. The performance of the proposed converter is ...

  11. Analysis of methods of processing of expert information by optimization of administrative decisions

    Science.gov (United States)

    Churakov, D. Y.; Tsarkova, E. G.; Marchenko, N. D.; Grechishnikov, E. V.

    2018-03-01

    In the real operation the measure definition methodology in case of expert estimation of quality and reliability of application-oriented software products is offered. In operation methods of aggregation of expert estimates on the example of a collective choice of an instrumental control projects in case of software development of a special purpose for needs of institutions are described. Results of operation of dialogue decision making support system are given an algorithm of the decision of the task of a choice on the basis of a method of the analysis of hierarchies and also. The developed algorithm can be applied by development of expert systems to the solution of a wide class of the tasks anyway connected to a multicriteria choice.

  12. Mechanical evaluation with fe analysis of sandwich panels for wind turbine blade

    Energy Technology Data Exchange (ETDEWEB)

    Yasaswi, M.; Naveen, P.N.E.; Prasad, R.V. [GIET. Dept. of Mechanical Engineering, Rajahmundry (India)

    2012-07-01

    Sandwich panels are notable for their structural efficiency and are used as load bearing components in various branches of engineering, especially in aerospace and marine industries. The objective of the present work is to perform computer-aided analysis on sandwich panels. The analysis of sandwich panel with truss core are compared with other four types of sandwich panel with continuous corrugated core, top hat core, zed core and channel core. The basic reason to use sandwich structure is to save weight, however smooth skins and excellent fatigue resistance are also attributes of a sandwich structure. A sandwich is comprised of two layered composite materials formed by bonding two or more thin facings or face sheets to relatively thick core materials. In this type of construction the facings resist nearly all of the in-plane loads and out-of-plane bending moments. The thin facings provide nearly all of the bending stiffness because they are generally of a much higher modulus material is located at a greatest distance from the neutral axis of the component. The basic concept of sandwich panel is that the facings carry the bending loads and the core carries the shear loads. The main function of the core material is to distribute local loads and stresses over large areas. From all this analysis it is concluded that the truss core Sandwich panels can be used in wind turbine blade design. (Author)

  13. Expert system for eddy current signal analysis: non destructive testing of steam generator tubings

    International Nuclear Information System (INIS)

    Benoist, B.

    1991-01-01

    Automatic analysis, by computer, of defect signals in steam generator tubes, based on Eddy current multifrequency technique, is must often inefficient due to pilgrim noise. The first step is to use a method that allows us to eleminate the noise: the adaptative interpolation. Thanks to this method, which ensures reliable data on each channel, the analysis can be realised by taking into account the data corresponding to each basic or mixed channel. By correlating these diverse data, we can class the signals according to two types of defects: single defects (symmetrical), multiple defects (several in the same place). The second step is to use an expert system which allows a reliable diagnosis for whatever family the defect belongs to. According to this classification, analysis is continued and results in the characterization of the defect. The expert system has already been developed with the general purpose application expert system shell SUPER, which is briefly described. The knowledge base (SOCRATE) and the specific tools developed for this application are thoroughly described. The first results obtained with signals corresponding to real defects, that have been recorded in different places, are presented and discussed. The expert system is revealed efficient in all the studied cases, even with signals obtained in very noisy environments [fr

  14. Shear and compression buckling analysis for anisotropic panels with centrally located elliptical cutouts

    Science.gov (United States)

    Britt, V. O.

    1993-01-01

    An approximate analysis for buckling of biaxial- and shear-loaded anisotropic panels with centrally located elliptical cutouts is presented in the present paper. The analysis is composed of two parts, a prebuckling analysis and a buckling analysis. The prebuckling solution is determined using Lekhnitskii's complex variable equations of plane elastostatics combined with a Laurent series approximation and a boundary collocation method. The buckling solution is obtained using the principle of minimum potential energy. A by-product of the minimum potential energy equation is an integral equation which is solved using Gaussian quadrature. Comparisons with documented experimental results and finite element analyses indicate that the approximate analysis accurately predicts the buckling loads of square biaxial- and shear-loaded panels having elliptical cutouts with major axes up to sixty percent of the panel width. Results of a parametric study are presented for shear- and compression-loaded rectangular anisotropic panels with elliptical cutouts. The effects of panel aspect ratio, cutout shape, cutout size, cutout orientation, laminate anisotropy, and combined loading on the buckling load are examined.

  15. WWER expert system for fuel failure analysis using the RTOP-CA code

    International Nuclear Information System (INIS)

    Likhanskii, V.; Evdokimov, I.; Sorokin, A.; Khromov, A.; Kanukova, V.; Apollonova, O.; Ugryumov, A.

    2008-01-01

    The computer expert system for fuel failure analysis of WWER during operation is presented. The diagnostics is based on the measurement of specific activity of reference nuclides in reactor primary coolant and application of a computer code for the data interpretation. The data analysis includes an evaluation of tramp uranium mass in reactor core, detection of failures by iodine and caesium spikes, evaluation of burnup of defective fuel. Evaluation of defective fuel burnup was carried out by applying the relation of caesium nuclides activity in spikes and relations of activities of gaseous fission products for steady state operational conditions. The method of burnup evaluation of defective fuel by use of fission gas activity is presented in details. The neural-network analysis is performed for determination of failed fuel rod number and defect size. Results of the expert system application are illustrated for several fuel campaigns on operating WWER NPPs. (authors)

  16. Analysis and selection criteria of photovoltaic panels for DHW

    Directory of Open Access Journals (Sweden)

    Nemś Artur

    2017-01-01

    Full Text Available The article discusses the issue of selecting power of photovoltaic panels for heating domestic hot water (DHW. It is indicated that the price of installation is several times lower than a couple of years ago. The authors present a method of selecting system power depending on DHW installation’s heating requirements and the building’s energy consumption. This algorithm allows for central heating requirements that are crucial in case of heating a building with solid fuel appliances. The described selection method uses heating power details obtained while drawing up Energy Performance Certificates, or the so-called heating degree-days, which enable to precisely determine the heating requirements in individual days of the year and select appropriate power of PV installation for the building’s energy performance. In addition, the authors have calculated the heating losses occurring in different elements of installation and showed their influence on the system’s power selection. The last part discusses the possibility of integrating PV installation used for heating DHW with the building’s central heating system, in order to use the energy surplus.

  17. Probability encoding of hydrologic parameters for basalt. Elicitation of expert opinions from a panel of three basalt waste isolation project staff hydrologists

    International Nuclear Information System (INIS)

    Runchal, A.K.; Merkhofer, M.W.; Olmsted, E.; Davis, J.D.

    1984-11-01

    The present study implemented a probability encoding method to estimate the probability distributions of selected hydrologic variables for the Cohassett basalt flow top and flow interior, and the anisotropy ratio of the interior of the Cohassett basalt flow beneath the Hanford Site. Site-speciic data for these hydrologic parameters are currently inadequate for the purpose of preliminary assessment of candidate repository performance. However, this information is required to complete preliminary performance assessment studies. Rockwell chose a probability encoding method developed by SRI International to generate credible and auditable estimates of the probability distributions of effective porosity and hydraulic conductivity anisotropy. The results indicate significant differences of opinion among the experts. This was especially true of the values of the effective porosity of the Cohassett basalt flow interior for which estimates differ by more than five orders of magnitude. The experts are in greater agreement about the values of effective porosity of the Cohassett basalt flow top; their estimates for this variable are generally within one to two orders of magnitiude of each other. For anisotropy ratio, the expert estimates are generally within two or three orders of magnitude of each other. Based on this study, the Rockwell hydrologists estimate the effective porosity of the Cohassett basalt flow top to be generally higher than do the independent experts. For the effective porosity of the Cohassett basalt flow top, the estimates of the Rockwell hydrologists indicate a smaller uncertainty than do the estimates of the independent experts. On the other hand, for the effective porosity and anisotropy ratio of the Cohassett basalt flow interior, the estimates of the Rockwell hydrologists indicate a larger uncertainty than do the estimates of the independent experts

  18. Damage Analysis of Aluminium Foam Panel Subjected to Underwater Shock Loading

    Directory of Open Access Journals (Sweden)

    Xuan He

    2017-01-01

    Full Text Available Underwater shock loading experiment device is the equipment which simulates underwater explosive shock wave through experiment. Underwater shock loading experiment device was used to conduct high-speed underwater impact on aluminium foam panel and its damage modes were studied in this paper. 3D dynamic DIC test system was used to collect and analyze real-time deformation of target board. After the experiment was completed, a numerical simulation of the series of experiment was conducted through ABAQUS finite element simulation and then a comparative analysis of the experiment was implemented. To comprehensively study damage modes of aluminium foam panel subjected to underwater shock loading, damage modes of aluminium foam panel at different shock speeds were studied. Results indicated that when a certain impact speed which could damage aluminium foam panel was reached, if the impact speed was low, aluminium foam panel would generate shear fracture at constrained boundary of flange; if the impact speed was high, aluminium foam panel would firstly generate fracture at the center and then generate shear fracture at constrained boundary of flange, and central fracture would generate three cracks.

  19. Developing a Validation Methodology for Expert-Informed Bayesian Network Models Supporting Nuclear Nonproliferation Analysis

    Energy Technology Data Exchange (ETDEWEB)

    White, Amanda M.; Gastelum, Zoe N.; Whitney, Paul D.

    2014-05-13

    Under the auspices of Pacific Northwest National Laboratory’s Signature Discovery Initiative (SDI), the research team developed a series of Bayesian Network models to assess multi-source signatures of nuclear programs. A Bayesian network is a mathematical model that can be used to marshal evidence to assess competing hypotheses. The purpose of the models was to allow non-expert analysts to benefit from the use of expert-informed mathematical models to assess nuclear programs, because such assessments require significant technical expertise ranging from the nuclear fuel cycle, construction and engineering, imagery analysis, and so forth. One such model developed under this research was aimed at assessing the consistency of open-source information about a nuclear facility with the facility’s declared use. The model incorporates factors such as location, security and safety features among others identified by subject matter experts as crucial to their assessments. The model includes key features, observables and their relationships. The model also provides documentation, which serves as training materials for the non-experts.

  20. Analysis of the application of decontamination technologies to radioactive metal waste minimization using expert systems

    International Nuclear Information System (INIS)

    Bayrakal, S.

    1993-01-01

    Radioactive metal waste makes up a significant portion of the waste currently being sent for disposal. Recovery of this metal as a valuable resource is possible through the use of decontamination technologies. Through the development and use of expert systems a comparison can be made of laser decontamination, a technology currently under development at Ames Laboratory, with currently available decontamination technologies for applicability to the types of metal waste being generated and the effectiveness of these versus simply disposing of the waste. These technologies can be technically and economically evaluated by the use of expert systems techniques to provide a waste management decision making tool that generates, given an identified metal waste, waste management recommendations. The user enters waste characteristic information as input and the system then recommends decontamination technologies, determines residual contamination levels and possible waste management strategies, carries out a cost analysis and then ranks, according to cost, the possibilities for management of the waste. The expert system was developed using information from literature and personnel experienced in the use of decontamination technologies and requires validation by human experts and assignment of confidence factors to the knowledge represented within

  1. Analysis of the application of decontamination technologies to radioactive metal waste minimization using expert systems

    Energy Technology Data Exchange (ETDEWEB)

    Bayrakal, Suna [Iowa State Univ., Ames, IA (United States)

    1993-09-30

    Radioactive metal waste makes up a significant portion of the waste currently being sent for disposal. Recovery of this metal as a valuable resource is possible through the use of decontamination technologies. Through the development and use of expert systems a comparison can be made of laser decontamination, a technology currently under development at Ames Laboratory, with currently available decontamination technologies for applicability to the types of metal waste being generated and the effectiveness of these versus simply disposing of the waste. These technologies can be technically and economically evaluated by the use of expert systems techniques to provide a waste management decision making tool that generates, given an identified metal waste, waste management recommendations. The user enters waste characteristic information as input and the system then recommends decontamination technologies, determines residual contamination levels and possible waste management strategies, carries out a cost analysis and then ranks, according to cost, the possibilities for management of the waste. The expert system was developed using information from literature and personnel experienced in the use of decontamination technologies and requires validation by human experts and assignment of confidence factors to the knowledge represented within.

  2. Comparative analysis of nanotechnology awareness in consumers and experts in South Korea

    Science.gov (United States)

    Kim, Yu-Ri; Lee, Eun Jeong; Park, Sung Ha; Kwon, Hyo Jin; An, Seong Soo A; Son, Sang Wook; Seo, Young Rok; Pie, Jae-Eun; Yoon, Myoung; Kim, Ja Hei; Kim, Meyoung-Kon

    2014-01-01

    Purpose This study examined the need for public communication about nanotechnologies and nanoparticles by providing a comparative analysis of the differences in risk awareness of nanotechnologies and nanoparticles between consumers and experts. Methods A total of 1,007 consumers and 150 experts participated in this study. A questionnaire was prepared examining their awareness of nanotechnologies and nanomaterials and their view of the necessity for information and education about the latest nanotechnologies and nanomaterials. Results Our results indicated that the expert group recognized that they knew more than consumers about nanotechnology and that there was a need for relevant education in nanotechnology and nanomaterials among consumers. We found that the consumer group had a more positive attitude toward nanotechnology, even though they did not know much about it. Moreover, the consumer group was inconclusive about the type of information on nanotechnology deemed necessary for the public, as well as the suitable party to be responsible for education and for delivering the information. Conclusion An education and promotion program targeting consumers should be established to overcome the differences between consumers and experts in their awareness of nanotechnology. Specifically, the establishment of concepts for nanomaterials or nanoproducts is required immediately. With clear standards on nanomaterials, consumers can make informed decisions in selecting nanoproducts in the market. PMID:25565823

  3. The Effect of Openness on Economic Growth for BRIC-T Countries: Panel Data Analysis

    Directory of Open Access Journals (Sweden)

    Mehmet MERCAN

    2013-05-01

    Full Text Available In this study, the effect of trade openness on economic growth was searched for the most rapidly developing countries (emerging markets; Brazil, Russia, India, China and Turkey, BRIC-T via panel data analysis by using the annual data of the period from 1989 to 2010. As trade openness variable, the rate of external trade (Export+ Import to GDP was used. According to empirical evidence derived from the study made with panel data analysis it was found that the effect of openness on economic growth was positive, and statistically significant in line with theoretical expectations.

  4. Expert prior elicitation and Bayesian analysis of the Mycotic Ulcer Treatment Trial I.

    Science.gov (United States)

    Sun, Catherine Q; Prajna, N Venkatesh; Krishnan, Tiruvengada; Mascarenhas, Jeena; Rajaraman, Revathi; Srinivasan, Muthiah; Raghavan, Anita; O'Brien, Kieran S; Ray, Kathryn J; McLeod, Stephen D; Porco, Travis C; Acharya, Nisha R; Lietman, Thomas M

    2013-06-14

    To perform a Bayesian analysis of the Mycotic Ulcer Treatment Trial I (MUTT I) using expert opinion as a prior belief. MUTT I was a randomized clinical trial comparing topical natamycin or voriconazole for treating filamentous fungal keratitis. A questionnaire elicited expert opinion on the best treatment of fungal keratitis before MUTT I results were available. A Bayesian analysis was performed using the questionnaire data as a prior belief and the MUTT I primary outcome (3-month visual acuity) by frequentist analysis as a likelihood. Corneal experts had a 41.1% prior belief that natamycin improved 3-month visual acuity compared with voriconazole. The Bayesian analysis found a 98.4% belief for natamycin treatment compared with voriconazole treatment for filamentous cases as a group (mean improvement 1.1 Snellen lines, 95% credible interval 0.1-2.1). The Bayesian analysis estimated a smaller treatment effect than the MUTT I frequentist analysis result of 1.8-line improvement with natamycin versus voriconazole (95% confidence interval 0.5-3.0, P = 0.006). For Fusarium cases, the posterior demonstrated a 99.7% belief for natamycin treatment, whereas non-Fusarium cases had a 57.3% belief. The Bayesian analysis suggests that natamycin is superior to voriconazole when filamentous cases are analyzed as a group. Subgroup analysis of Fusarium cases found improvement with natamycin compared with voriconazole, whereas there was almost no difference between treatments for non-Fusarium cases. These results were consistent with, though smaller in effect size than, the MUTT I primary outcome by frequentist analysis. The accordance between analyses further validates the trial results. (ClinicalTrials.gov number, NCT00996736.).

  5. Framework for generating expert systems to perform computer security risk analysis

    International Nuclear Information System (INIS)

    Smith, S.T.; Lim, J.J.

    1985-01-01

    At Los Alamos we are developing a framework to generate knowledge-based expert systems for performing automated risk analyses upon a subject system. The expert system is a computer program that models experts' knowledge about a topic, including facts, assumptions, insights, and decision rationale. The subject system, defined as the collection of information, procedures, devices, and real property upon which the risk analysis is to be performed, is a member of the class of systems that have three identifying characteristics: a set of desirable assets (or targets), a set of adversaries (or threats) desiring to obtain or to do harm to the assets, and a set of protective mechanisms to safeguard the assets from the adversaries. Risk analysis evaluates both vulnerability to and the impact of successful threats against the targets by determining the overall effectiveness of the subject system safeguards, identifying vulnerabilities in that set of safeguards, and determining cost-effective improvements to the safeguards. As a testbed, we evaluate the inherent vulnerabilities and risks in a system of computer security safeguards. The method considers safeguards protecting four generic targets (physical plant of the computer installation, its hardware, its software, and its documents and displays) against three generic threats (natural hazards, direct human actions requiring the presence of the adversary, and indirect human actions wherein the adversary is not on the premises-perhaps using such access tools as wiretaps, dialup lines, and so forth). Our automated procedure to assess the effectiveness of computer security safeguards differs from traditional risk analysis methods

  6. Benefit Analysis of SPC Panel SP-7 Projects and Evaluation of SPC Panel SP-7 Management and Administration

    National Research Council Canada - National Science Library

    Robinson, Rodney A

    1993-01-01

    .... Projects that have provided important reference information have also been beneficial. This Task has also assessed the opinion of the shipyard using community on the administration and management of Panel SP-7 itself...

  7. Benefit Analysis of SPC Panel SP-4 Projects and Evaluation of SPC Panel SP-4 Management and Administration

    National Research Council Canada - National Science Library

    Robinson, Rodney A

    1993-01-01

    This Task has investigated the benefits derived from the projects sponsored during the past 12 years by SNAME Ship Production Committee Panel SP-4 on Design/Production Integration under the National...

  8. Benefit Analysis of SPC Panel SP-3 Projects and Evaluation of SPC Panel SP-3 Management and Administration

    National Research Council Canada - National Science Library

    Robinson, Rodney A

    1993-01-01

    This Task has investigated the benefits derived from the projects sponsored during the past 4 years by SNAME Ship Production Committee Panel SP-3 on Surface Preparation and Coatings under the National...

  9. An Analysis of Solar Panel Assembly as a Prison Industry

    Science.gov (United States)

    Lizak, R. M.

    1980-01-01

    An analysis of the effect of manufacturing solar collectors by California prison inmates is presented. It was concluded that the concept is feasible and would have little adverse effect on the private sector's solar industry.

  10. Developing a PC-based expert system for fault analysis of reactor instruments

    International Nuclear Information System (INIS)

    Diwakar, M.P.; Rathod, N.C.; Bairi, B.R.; Darbhe, M.D.; Joglekar, S.S.

    1989-01-01

    This paper describes the development of an expert system for fault analysis of electronic instruments in the CIRUS nuclear reactor. The system was developed in Prolog on an IBM PC-XT compatible computer. A 'model-based' approach (Button et al, 1986) was adopted combining 'frames' and 'rules' to provide flexible control over the inferencing mechanisms. Frames represent the domain-objects as well as the inter-object relationships. They include 'demons' or 'active values' for triggering actions. Rules, along with frames, are used for fault analysis. The rules can be activated either in a data-driven or a goal-driven manner. The use of frames makes rule management easier. It is felt that developing in-house shell proved advantageous, compared to using commercially available shells. Choosing the model-based approach was efficient compared to a production system architecture. Therefore, the use of hybrid representations for diagnostic applications is advocated. Based on the experience, some general recommendations for developing such systems are presented. The expert system helps novice operators to understand the process of diagnosis and achieve a significant required level of competence. The system may not achieve the required level of proficiency by itself, but it can be used to train operators to become experts. (author). 12 refs

  11. Development of a diagnostic expert system for eddy current data analysis using applied artificial intelligence methods

    Energy Technology Data Exchange (ETDEWEB)

    Upadhyaya, B.R.; Yan, W. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering; Behravesh, M.M. [Electric Power Research Institute, Palo Alto, CA (United States); Henry, G. [EPRI NDE Center, Charlotte, NC (United States)

    1999-09-01

    A diagnostic expert system that integrates database management methods, artificial neural networks, and decision-making using fuzzy logic has been developed for the automation of steam generator eddy current test (ECT) data analysis. The new system, known as EDDYAI, considers the following key issues: (1) digital eddy current test data calibration, compression, and representation; (2) development of robust neural networks with low probability of misclassification for flaw depth estimation; (3) flaw detection using fuzzy logic; (4) development of an expert system for database management, compilation of a trained neural network library, and a decision module; and (5) evaluation of the integrated approach using eddy current data. The implementation to field test data includes the selection of proper feature vectors for ECT data analysis, development of a methodology for large eddy current database management, artificial neural networks for flaw depth estimation, and a fuzzy logic decision algorithm for flaw detection. A large eddy current inspection database from the Electric Power Research Institute NDE Center is being utilized in this research towards the development of an expert system for steam generator tube diagnosis. The integration of ECT data pre-processing as part of the data management, fuzzy logic flaw detection technique, and tube defect parameter estimation using artificial neural networks are the fundamental contributions of this research. (orig.)

  12. Epistemic Uncertainty Analysis: An Approach Using Expert Judgment and Evidential Credibility

    Directory of Open Access Journals (Sweden)

    Patrick Hester

    2012-01-01

    Full Text Available When dealing with complex systems, all decision making occurs under some level of uncertainty. This is due to the physical attributes of the system being analyzed, the environment in which the system operates, and the individuals which operate the system. Techniques for decision making that rely on traditional probability theory have been extensively pursued to incorporate these inherent aleatory uncertainties. However, complex problems also typically include epistemic uncertainties that result from lack of knowledge. These problems are fundamentally different and cannot be addressed in the same fashion. In these instances, decision makers typically use subject matter expert judgment to assist in the analysis of uncertainty. The difficulty with expert analysis, however, is in assessing the accuracy of the expert's input. The credibility of different information can vary widely depending on the expert’s familiarity with the subject matter and their intentional (i.e., a preference for one alternative over another and unintentional biases (heuristics, anchoring, etc.. This paper proposes the metric of evidential credibility to deal with this issue. The proposed approach is ultimately demonstrated on an example problem concerned with the estimation of aircraft maintenance times for the Turkish Air Force.

  13. Gendered use of experts in the media: Analysis of the gender gap in Finnish news journalism.

    Science.gov (United States)

    Niemi, Mari K; Pitkänen, Ville

    2017-04-01

    Several studies conducted in Western democracies have indicated that men continue to be overrepresented and women underrepresented as experts in the media. This article explores the situation in Finland, a progressive and 'female-friendly' Nordic country with highly educated women who are widely present in the job market. The analysis is based on three sets of research data featuring a wide set of media data, a survey and interviews. This study reveals that public expertise continues to be male dominated in Finland: less than 30% of the experts interviewed in the news media are women. While the distribution of work and power in the labour market may explain some of the observed gender gap, journalistic practices and a masculine tradition of public expertise are likely to play a role as well.

  14. Mathematical Creativity and Mathematical Aptitude: A Cross-Lagged Panel Analysis

    Science.gov (United States)

    Tyagi, Tarun Kumar

    2016-01-01

    Cross-lagged panel correlation (CLPC) analysis has been used to identify causal relationships between mathematical creativity and mathematical aptitude. For this study, 480 8th standard students were selected through a random cluster technique from 9 intermediate and high schools of Varanasi, India. Mathematical creativity and mathematical…

  15. Collusion in the Indian Tea Industry in the Great Depression : An Analysis of Panel Data

    NARCIS (Netherlands)

    Gupta, B.

    1995-01-01

    This paper analyzes the effectiveness of the control schemes in the Indian tea industry during the Great Depression, whereby producers attempted to collude by reducing output. Analysis of data from a panel of plantations shows that collusion was effective. We suggest that the system of management of

  16. School Expenditure and School Performance: Evidence from New South Wales Schools Using a Dynamic Panel Analysis

    Science.gov (United States)

    Pugh, G.; Mangan, J.; Blackburn, V.; Radicic, D.

    2015-01-01

    This article estimates the effects of school expenditure on school performance in government secondary schools in New South Wales, Australia over the period 2006-2010. It uses dynamic panel analysis to exploit time series data on individual schools that only recently has become available. We find a significant but small effect of expenditure on…

  17. School Connectedness and Chinese Adolescents' Sleep Problems: A Cross-Lagged Panel Analysis

    Science.gov (United States)

    Bao, Zhenzhou; Chen, Chuansheng; Zhang, Wei; Jiang, Yanping; Zhu, Jianjun; Lai, Xuefen

    2018-01-01

    Background: Although previous research indicates an association between school connectedness and adolescents' sleep quality, its causal direction has not been determined. This study used a 2-wave cross-lagged panel analysis to explore the likely causal direction between these 2 constructs. Methods: Participants were 888 Chinese adolescents (43.80%…

  18. Improved high order free vibration analysis of thick double curved sandwich panels with transversely flexible cores

    Directory of Open Access Journals (Sweden)

    K. Malekzadeh Fard

    Full Text Available This paper dealt with free vibration analysis of thick double curved composite sandwich panels with simply supported or fully clamped boundary conditions based on a new improved higher order sandwich panel theory. The formulation used the first order shear deformation theory for composite face sheets and polynomial description for the displacement field in the core layer which was based on the displacement field of Frostig's second model. The fully dynamic effects of the core layer and face sheets were also considered in this study. Using the Hamilton's principle, the governing equations were derived. Moreover, effects of some important parameters like that of boundary conditions, thickness ratio of the core to panel, radii curvatures and composite lay-up sequences were investigated on free vibration response of the panel. The results were validated by those published in the literature and with the FE results obtained by ABAQUS software. It was shown that thicker panels with a thicker core provided greater resistance to resonant vibrations. Also, effect of increasing the core thickness in general was significant decreased fundamental natural frequency values.

  19. Analysis for discharge-radiation dynamics in alternating current plasma display panels

    International Nuclear Information System (INIS)

    Suzuki, Keizo; Yamamoto, Kenichi; Kajiyama, Hiroshi; Ho, Shirun; Uemura, Norihiro; Muraoka, Katsunori

    2004-01-01

    An analytical method to study the discharge-radiation dynamics (DRD) in alternating current plasma display panels was developed. The input parameters for this DRD analysis were experimentally determined panel voltage and current wave forms. Discharge voltage, current, and power wave forms in the discharge volume of a cell were first obtained from the measured panel voltage and current wave forms using known geometrical configurations and electric circuit calculations. Intrinsic discharge parameters, such as electron temperature and density, were then determined to satisfy these discharge wave forms under the assumption of a hydrodynamic approach. A one-dimensional discharge structure with two regions (cathode fall and positive column) and several other assumptions which are plausible from the discharge physics point of view were also adopted. These assumptions took account of known cross sections and energies of electron-impact excitation and ionization of discharge gas atoms, and a secondary electron emission coefficient of the dielectric surface at the cathode side induced by ion bombardment. Radiation intensities from the discharge were calculated using the determined intrinsic discharge parameters, and the results were compared with those measured for the respective panel conditions used in the calculations, yielding a fair agreement. The luminous efficiency, defined as the radiation intensity divided by the discharge power, was also determined using the intrinsic discharge parameters. Discussion on the luminous efficiency change for different panel operating conditions revealed that the efficiency improvement at a lower voltage was attributable to a lower electron temperature for this condition

  20. Performance Analysis of Photovoltaic Panels with Earth Water Heat Exchanger Cooling

    Directory of Open Access Journals (Sweden)

    Jakhar Sanjeev

    2016-01-01

    Full Text Available The operating temperature is an important factor affecting the performance and life span of the Photovoltaic (PV panels. The rising temperature can be maintained within certain limit using proper cooling techniques. In the present research a novel system for cooling of PV panels named as Earth Water Heat Exchanger (EWHE is proposed and modelled in transient analysis simulation tool (TRNSYS v17.0 for the conditions of Pilani, Rajasthan (India.The various parameters which include cell temperature, PV power output and cell efficiency are observed with respect to variation in mass flow rate of fluid. Simulation results of the system without cooling show that the maximum PV panel temperature reached up to 79.31 °C with electrical efficiency dropped to 9% during peak sunshine hour. On the other hand, when PV panels are coupled with EWHE system, the panel temperature drops to 46.29 °C with an efficiency improving to 11% for a mass flow rate of 0.022 kg/s. In the end the cooling potential of EWHE is found to be in direct correlation with mass flow rate. The proposed system is very useful for the arid regions of western India which are blessed with high solar insolation throughout the year.

  1. Capacity analysis of amortization of energy and environmental liabilities photovoltaic panels

    International Nuclear Information System (INIS)

    Tiago Filho, Geraldo Lucio; Adriano Rosa, Carlos

    2011-01-01

    The claim that the use of solar energy through photovoltaic (PV) panels is a clean energy source is based, in most cases, considering only the generation of electricity by the group after manufacture and installation. Without considering the process of manufacture, neither more nor less CO2 emissions are produced, and other degradation environment, which vary according to the country's energy matrix in which these activities develop. This article uses analysis tools to study the impacts of life cycle environment that have passed since the exploitation of mineral deposits used in the manufacture of major components for the manufacture of the panel. In this study adds to quantify the emissions of various gases, emitted in the manufacturing process of photovoltaic modules, expressed in equivalent tons of CO2, resulting from the process and depending on the country in which the panel is manufactured and the depreciation of environmental liabilities, to allow life determination (author)

  2. Expert systems for the analysis of transients on nuclear reactors: crisis analysis, sextant, a general purpose physical analyser

    International Nuclear Information System (INIS)

    Barbet, N.; Dumas, M.; Mihelich, G.; Souchet, Y.; Thomas, J.B.

    1987-04-01

    Two developments of expert systems intended to work on line to the analysis of nuclear reactor transients are reported. During an hypothetical crisis occurring in a nuclear facility, a staff of the Institute for Protection and Nuclear Safety (IPSN) has to assess the risk to local population. The expert system is intended to work as an assistant to the staff. At the present time, it deals with the availability of the safety systems of the plant (e.g. ECCS), depending on the functional state of the support systems. A next step is to take into account the physical transient of the reactor (mass and energy balance, pressure, flows). In order to reach this goal as in the development of other similar expert systems, a physical analyser is required. This is the aim of SEXTANT, which combines several knowledge bases concerning measurements, models and qualitative behaviour of the plant with a mechanism of conjecture-refutation and a set of simplified models matching the current physical state. A prototype is under assessment by dealing with integral test facility transients. Both expert systems require powerful shells for their development. SPIRAL is such a toolkit for the development of expert systems devoted to the computer aided management of complex processes

  3. Conceptualizing physical activity parenting practices using expert informed concept mapping analysis.

    Science.gov (United States)

    Mâsse, Louise C; O'Connor, Teresia M; Tu, Andrew W; Hughes, Sheryl O; Beauchamp, Mark R; Baranowski, Tom

    2017-06-14

    Parents are widely recognized as playing a central role in the development of child behaviors such as physical activity. As there is little agreement as to the dimensions of physical activity-related parenting practices that should be measured or how they should be operationalized, this study engaged experts to develop an integrated conceptual framework for assessing parenting practices that influence multiple aspects of 5 to 12 year old children's participation in physical activity. The ultimate goal of this study is to inform the development of an item bank (repository of calibrated items) aimed at measuring physical activity parenting practices. Twenty four experts from 6 countries (Australia, Canada, England, Scotland, the Netherlands, & United States (US)) sorted 77 physical activity parenting practice concepts identified from our previously published synthesis of the literature (74 measures) and survey of Canadian and US parents. Concept Mapping software was used to conduct the multi-dimensional scaling (MDS) analysis and a cluster analysis of the MDS solution of the Expert's sorting which was qualitatively reviewed and commented on by the Experts. The conceptual framework includes 12 constructs which are presented using three main domains of parenting practices (neglect/control, autonomy support, and structure). The neglect/control domain includes two constructs: permissive and pressuring parenting practices. The autonomy supportive domain includes four constructs: encouragement, guided choice, involvement in child physical activities, and praises/rewards for their child's physical activity. Finally, the structure domain includes six constructs: co-participation, expectations, facilitation, modeling, monitoring, and restricting physical activity for safety or academic concerns. The concept mapping analysis provided a useful process to engage experts in re-conceptualizing physical activity parenting practices and identified key constructs to include in

  4. Measuring novices' field mapping abilities using an in-class exercise based on expert task analysis

    Science.gov (United States)

    Caulkins, J. L.

    2010-12-01

    We are interested in developing a model of expert-like behavior for improving the teaching methods of undergraduate field geology. Our aim is to assist students in mastering the process of field mapping more efficiently and effectively and to improve their ability to think creatively in the field. To examine expert-mapping behavior, a cognitive task analysis was conducted with expert geologic mappers in an attempt to define the process of geologic mapping (i.e. to understand how experts carry out geological mapping). The task analysis indicates that expert mappers have a wealth of geologic scenarios at their disposal that they compare against examples seen in the field, experiences that most undergraduate mappers will not have had. While presenting students with many geological examples in class may increase their understanding of geologic processes, novices still struggle when presented with a novel field situation. Based on the task analysis, a short (45-minute) paper-map-based exercise was designed and tested with 14 pairs of 3rd year geology students. The exercise asks students to generate probable geologic models based on a series of four (4) data sets. Each data set represents a day’s worth of data; after the first “day,” new sheets simply include current and previously collected data (e.g. “Day 2” data set includes data from “Day 1” plus the new “Day 2” data). As the geologic complexity increases, students must adapt, reject or generate new geologic models in order to fit the growing data set. Preliminary results of the exercise indicate that students who produced more probable geologic models, and produced higher ratios of probable to improbable models, tended to go on to do better on the mapping exercises at the 3rd year field school. These results suggest that those students with more cognitively available geologic models may be more able to use these models in field settings than those who are unable to draw on these models for whatever

  5. Expert assessments and content analysis of crew communication during ISS missions

    Science.gov (United States)

    Yusupova, Anna

    During the last seven years, we have analyzed the communication patterns between ISS crewmembers and mission control personnel and identified a number of different communication styles between these two groups (Gushin et al, 2005). In this paper, we will report on an external validity check we conducted that compares our findings with those of another study using the same research material. For many years the group of psychologists at the Medical Center of Space Flight Control (TCUMOKO) at the Institute for Biomedical Problems (IBMP) in Moscow has been analyzing audio communication sessions of Russian space crews with the ground-based Mission Control during long-duration spaceflight conditions. We compared week by week texts of the standard weekly monitoring reports made by the TsUP psychological group and audiocommunication of space crews with mission control centers. Expert assessments of the crewmembers' psychological state are made by IBMP psychoneurologists on the basis of daily schedule fulfillment, video and audio materials, and psychophysiological data from board. The second approach was based on the crew-ground communication analysis. For both population of messages we applied two corresponding schemas of content analysis. All statements made in communication sessions and weekly reports were divided into three groups in terms of their communication function (Lomov, 1981): 1) informative function (e.g., demands for information, requests, professional slang); 2) socio-regulatory function (e.g., rational consent or discord, operational complaint, refusal to cooperate); and 3) affective (emotional) function (e.g., encouragement, sympathy, emotional consent or discord). Number of statements of the audiocommunication sessions correlated with corresponding functions (informative, regulatory, affective) of communication in weekly monitioring reports made by experts. Crewmembers verbal behavior expresses its psycho-emotional state which is formulated by expert

  6. Sensitivity analysis on ultimate strength of aluminium stiffened panels

    DEFF Research Database (Denmark)

    Rigo, P.; Sarghiuta, R.; Estefen, S.

    2003-01-01

    on ultimate strength. The goal has typically been to give guidance to the designer on how to predict the ultimate strength and to indicate what level of accuracy would be expected. This time, the target of this benchmark is to present reliable finite element methods to study the behaviour of axial compressed...... members analysed the same structure with a defined set of parameters and using different codes. It wa expected that all the codes/models predict the same results. In Phase B, to boost the scope of the analysis, the different members Uusing their own model) performed FE analyses for a range of variation...

  7. Face-Sheet Quality Analysis and Thermo-Physical Property Characterization of OOA and Autoclave Panels

    Science.gov (United States)

    Miller, Sandi G.; Lort, Richard D., III; Zimmerman, Thomas J.; Sutter, James K.; Pelham, Larry I.; McCorkle, Linda S.; Scheiman, Daniel A.

    2012-01-01

    Increased application of polymer matrix composite (PMC) materials in large vehicle structures requires consideration of non-autoclave manufacturing technology. The NASA Composites for Exploration project, and its predecessor, Lightweight Spacecraft Structures and Materials project, were tasked with the development of materials and manufacturing processes for structures that will perform in a heavy-lift-launch vehicle environment. Both autoclave and out of autoclave processable materials were considered. Large PMC structures envisioned for such a vehicle included the payload shroud and the interstage connector. In this study, composite sandwich panels representing 1/16th segments of the barrel section of the Ares V rocket fairing were prepared as 1.8 m x 2.4 m sections of the 10 m diameter arc segment. IM7/977-3 was used as the face-sheet prepreg of the autoclave processed panels and T40-800B/5320-1 for the out of autoclave panels. The core was 49.7 kg/sq m (3.1 lb/cu ft (pcf)) aluminum honeycomb. Face-sheets were fabricated by automated tape laying 153 mm wide unidirectional tape. This work details analysis of the manufactured panels where face-sheet quality was characterized by optical microscopy, cured ply thickness measurements, acid digestion, and thermal analysis.

  8. Safety analysis of an expert reactor protection system in nuclear power plants

    International Nuclear Information System (INIS)

    El-Kafas, A.A.

    1997-01-01

    The purpose of the dissertation is to develop real time expert reactor protection system (ERPS) for operational safety of pressurized water reactor nuclear power plant. The system is developed to diagnose plant failures and for identification plant transients (with and without scram). For this erps, probabilistic safety analysis techniques are used to check the availability and priority of the recommended safety system in case of plant accidents. The real - time information during transients and accidents can be obtained to assess the operator in his decision - making. Also, the ERPS is able to give advice for the reactor operator to take the appropriate corrective action during abnormal situations. 5-15 figs., 42 refs

  9. Identifying and Characterizing Discrepancies Between Test and Analysis Results of Compression-Loaded Panels

    Science.gov (United States)

    Thornburgh, Robert P.; Hilburger, Mark W.

    2005-01-01

    Results from a study to identify and characterize discrepancies between validation tests and high-fidelity analyses of compression-loaded panels are presented. First, potential sources of the discrepancies in both the experimental method and corresponding high-fidelity analysis models were identified. Then, a series of laboratory tests and numerical simulations were conducted to quantify the discrepancies and develop test and analysis methods to account for the discrepancies. The results indicate that the discrepancies between the validation tests and high-fidelity analyses can be attributed to imperfections in the test fixture and specimen geometry; test-fixture-induced changes in specimen geometry; and test-fixture-induced friction on the loaded edges of the test specimen. The results also show that accurate predictions of the panel response can be obtained when these specimen imperfections and edge conditions are accounted for in the analysis. The errors in the tests and analyses, and the methods used to characterize these errors are presented.

  10. Conceptualizing physical activity parenting practices using expert informed concept mapping analysis

    Directory of Open Access Journals (Sweden)

    Louise C. Mâsse

    2017-06-01

    Full Text Available Abstract Background Parents are widely recognized as playing a central role in the development of child behaviors such as physical activity. As there is little agreement as to the dimensions of physical activity-related parenting practices that should be measured or how they should be operationalized, this study engaged experts to develop an integrated conceptual framework for assessing parenting practices that influence multiple aspects of 5 to 12 year old children’s participation in physical activity. The ultimate goal of this study is to inform the development of an item bank (repository of calibrated items aimed at measuring physical activity parenting practices. Methods Twenty four experts from 6 countries (Australia, Canada, England, Scotland, the Netherlands, & United States (US sorted 77 physical activity parenting practice concepts identified from our previously published synthesis of the literature (74 measures and survey of Canadian and US parents. Concept Mapping software was used to conduct the multi-dimensional scaling (MDS analysis and a cluster analysis of the MDS solution of the Expert’s sorting which was qualitatively reviewed and commented on by the Experts. Results The conceptual framework includes 12 constructs which are presented using three main domains of parenting practices (neglect/control, autonomy support, and structure. The neglect/control domain includes two constructs: permissive and pressuring parenting practices. The autonomy supportive domain includes four constructs: encouragement, guided choice, involvement in child physical activities, and praises/rewards for their child’s physical activity. Finally, the structure domain includes six constructs: co-participation, expectations, facilitation, modeling, monitoring, and restricting physical activity for safety or academic concerns. Conclusion The concept mapping analysis provided a useful process to engage experts in re-conceptualizing physical activity

  11. Recommendations for probabilistic seismic hazard analysis: Guidance on uncertainty and use of experts

    Energy Technology Data Exchange (ETDEWEB)

    Budnitz, R.J.; Apostolakis, G.; Boore, D.M. [and others

    1997-04-01

    Probabilistic Seismic Hazard Analysis (PSHA) is a methodology that estimates the likelihood that various levels of earthquake-caused ground motion will be exceeded at a given location in a given future time period. Due to large uncertainties in all the geosciences data and in their modeling, multiple model interpretations are often possible. This leads to disagreement among experts, which in the past has led to disagreement on the selection of ground motion for design at a given site. In order to review the present state-of-the-art and improve on the overall stability of the PSHA process, the U.S. Nuclear Regulatory Commission (NRC), the U.S. Department of Energy (DOE), and the Electric Power Research Institute (EPRI) co-sponsored a project to provide methodological guidance on how to perform a PSHA. The project has been carried out by a seven-member Senior Seismic Hazard Analysis Committee (SSHAC) supported by a large number other experts. The SSHAC reviewed past studies, including the Lawrence Livermore National Laboratory and the EPRI landmark PSHA studies of the 1980`s and examined ways to improve on the present state-of-the-art. The Committee`s most important conclusion is that differences in PSHA results are due to procedural rather than technical differences. Thus, in addition to providing a detailed documentation on state-of-the-art elements of a PSHA, this report provides a series of procedural recommendations. The role of experts is analyzed in detail. Two entities are formally defined-the Technical Integrator (TI) and the Technical Facilitator Integrator (TFI)--to account for the various levels of complexity in the technical issues and different levels of efforts needed in a given study.

  12. Recommendations for probabilistic seismic hazard analysis: Guidance on uncertainty and use of experts

    International Nuclear Information System (INIS)

    Budnitz, R.J.; Apostolakis, G.; Boore, D.M.

    1997-04-01

    Probabilistic Seismic Hazard Analysis (PSHA) is a methodology that estimates the likelihood that various levels of earthquake-caused ground motion will be exceeded at a given location in a given future time period. Due to large uncertainties in all the geosciences data and in their modeling, multiple model interpretations are often possible. This leads to disagreement among experts, which in the past has led to disagreement on the selection of ground motion for design at a given site. In order to review the present state-of-the-art and improve on the overall stability of the PSHA process, the U.S. Nuclear Regulatory Commission (NRC), the U.S. Department of Energy (DOE), and the Electric Power Research Institute (EPRI) co-sponsored a project to provide methodological guidance on how to perform a PSHA. The project has been carried out by a seven-member Senior Seismic Hazard Analysis Committee (SSHAC) supported by a large number other experts. The SSHAC reviewed past studies, including the Lawrence Livermore National Laboratory and the EPRI landmark PSHA studies of the 1980's and examined ways to improve on the present state-of-the-art. The Committee's most important conclusion is that differences in PSHA results are due to procedural rather than technical differences. Thus, in addition to providing a detailed documentation on state-of-the-art elements of a PSHA, this report provides a series of procedural recommendations. The role of experts is analyzed in detail. Two entities are formally defined-the Technical Integrator (TI) and the Technical Facilitator Integrator (TFI)--to account for the various levels of complexity in the technical issues and different levels of efforts needed in a given study

  13. CO2 emissions, energy consumption and economic growth in China: A panel data analysis

    International Nuclear Information System (INIS)

    Wang, S.S.; Zhou, D.Q.; Zhou, P.; Wang, Q.W.

    2011-01-01

    This paper examines the causal relationships between carbon dioxide emissions, energy consumption and real economic output using panel cointegration and panel vector error correction modeling techniques based on the panel data for 28 provinces in China over the period 1995-2007. Our empirical results show that CO 2 emissions, energy consumption and economic growth have appeared to be cointegrated. Moreover, there exists bidirectional causality between CO 2 emissions and energy consumption, and also between energy consumption and economic growth. It has also been found that energy consumption and economic growth are the long-run causes for CO 2 emissions and CO 2 emissions and economic growth are the long-run causes for energy consumption. The results indicate that China's CO 2 emissions will not decrease in a long period of time and reducing CO 2 emissions may handicap China's economic growth to some degree. Some policy implications of the empirical results have finally been proposed. - Highlights: → We conduct a panel data analysis of the energy-CO 2 -economy nexus in China. → CO 2 emissions, energy use and economic growth appear to be cointegrated. → There exists bidirectional causality between energy consumption and economic growth. → Energy consumption and economic growth are the long-run causes for CO 2 emissions.

  14. Parametric analysis of the operation of nocturnal radiative cooling panels coupled with in room PCM ceiling panels

    DEFF Research Database (Denmark)

    Bourdakis, Eleftherios; Kazanci, Ongun Berk; Péan, T.Q.

    2017-01-01

    03:00 and get activated when the temperature in the storage tank was below 21°C, 69.8°F, activate the heat pump no earlier than 05:00 and get activated when the temperature in the storage tank was below 15°C, 59°F, and lastly have a temperature difference between the output of the solar panels......The scope of this parametric simulation study was to identify the optimal combination of set-points for different parameters of a radiant PCM ceiling panels cooling system that will result in the best indoor thermal environment with the least possible energy use. The results showed that for each...

  15. Consumers and Experts : An Econometric Analysis of the Demand for Water Heaters

    NARCIS (Netherlands)

    Bartels, R.; Fiebig, D.G.; van Soest, A.H.O.

    2003-01-01

    Consumers can accumulate product information on the basis of a combination of searching, product advertising and expert advice.Examples of experts who provide product information include doctors advising patients on treatments, motor mechanics diagnosing car problems and recommending repairs,

  16. The Multi-Disciplinary Graduate Program in Educational Research. Final Report, Part III; Elements of Panel Analysis.

    Science.gov (United States)

    Lazarsfeld, Paul F., Ed.

    Four case studies were used to illustrate application of panel analysis in sociological research. The panel design requires that (a) identical units be reobserved; (b) identical criteria be employed; and (c) initial and subsequent observations be made at the same times for all units and all criteria. Units may be individuals, qroups (such as…

  17. Panel Analysis of Internet Booking of Travel and Holiday Accommodation Indicators

    Directory of Open Access Journals (Sweden)

    Ksenija Dumičić

    2016-01-01

    Full Text Available In the article four development indicators have been carefully selected and their impact on the level of acceptance of the Internet booking of travel and holiday accommodation in selected European countries has been observed. The statistical panel analysis approach was used to determine the individual and the common impact of the development indicators. The analysis has shown that an individual’s wealth, the public expenditure on education, and the Internet penetration rate have a positive statistically significant impact on the level of acceptance of the Internet booking of travel and holiday accommodation whereas the share of individuals with low level Internet skills has a negative statistically significant impact. These results carry significant importance for economists, politicians and all other stakeholders responsible for tourism development in a country. The use of the unbalanced panel is the main limitation of the article.

  18. A kinematic and metabolic analysis of the first Lu of Tai Chi in experts and beginners.

    Science.gov (United States)

    Zorzi, Elena; Nardello, Francesca; Fracasso, Enrico; Franchi, Sara; Clauti, Anna; Cesari, Paola; Zamparo, Paola

    2015-10-01

    The aim of this study was to compare movement kinematics, cocontraction times, and metabolic data in expert and nonexpert Tai Chi practitioners. Significant differences were observed for all kinematic parameters: experts moved smoothly (lower jerk) and with a lower frequency. No differences in metabolic and electromyography data were observed but for the breathing pattern (experts breathed slowly and deeply). Movement frequency and breathing pattern are thus the main features that distinguish expert and nonexpert practitioners.

  19. Pantex Falling Man - Independent Review Panel Report.

    Energy Technology Data Exchange (ETDEWEB)

    Brannon, Nathan Gregory; L. Bertolini, N. Brannon, J. Olsen, B. Price, M. Steinzig, R. Wardle, & M. Winfield

    2014-11-01

    Consolidated Nuclear Security (CNS) Pantex took the initiative to organize a Review Panel of subject matter experts to independently assess the adequacy of the Pantex Tripping Man Analysis methodology. The purpose of this report is to capture the details of the assessment including the scope, approach, results, and detailed Appendices. Along with the assessment of the analysis methodology, the panel evaluated the adequacy with which the methodology was applied as well as congruence with Department of Energy (DOE) standards 3009 and 3016. The approach included the review of relevant documentation, interactive discussion with Pantex staff, and the iterative process of evaluating critical lines of inquiry.

  20. Infant mortality in Brazil, 1980-2000: A spatial panel data analysis

    Directory of Open Access Journals (Sweden)

    Barufi Ana

    2012-03-01

    Full Text Available Abstract Background Infant mortality is an important measure of human development, related to the level of welfare of a society. In order to inform public policy, various studies have tried to identify the factors that influence, at an aggregated level, infant mortality. The objective of this paper is to analyze the regional pattern of infant mortality in Brazil, evaluating the effect of infrastructure, socio-economic, and demographic variables to understand its distribution across the country. Methods Regressions including socio-economic and living conditions variables are conducted in a structure of panel data. More specifically, a spatial panel data model with fixed effects and a spatial error autocorrelation structure is used to help to solve spatial dependence problems. The use of a spatial modeling approach takes into account the potential presence of spillovers between neighboring spatial units. The spatial units considered are Minimum Comparable Areas, defined to provide a consistent definition across Census years. Data are drawn from the 1980, 1991 and 2000 Census of Brazil, and from data collected by the Ministry of Health (DATASUS. In order to identify the influence of health care infrastructure, variables related to the number of public and private hospitals are included. Results The results indicate that the panel model with spatial effects provides the best fit to the data. The analysis confirms that the provision of health care infrastructure and social policy measures (e.g. improving education attainment are linked to reduced rates of infant mortality. An original finding concerns the role of spatial effects in the analysis of IMR. Spillover effects associated with health infrastructure and water and sanitation facilities imply that there are regional benefits beyond the unit of analysis. Conclusions A spatial modeling approach is important to produce reliable estimates in the analysis of panel IMR data. Substantively, this paper

  1. Sensory evaluation of boar-taint-containing minced meat, dry-cured ham and dry fermented sausage by a trained expert panel and consumers.

    Science.gov (United States)

    Verplanken, Kaat; Wauters, Jella; Vercruysse, Vicky; Aluwé, Marijke; Vanhaecke, Lynn

    2017-10-15

    One of the main issues related to entire male pigs is the occurrence of boar taint, an off-odour, which compromises meat consumability. In this study, odour thresholds (indole: 24-65µgkg -1 , skatole: 44-89µgkg -1 , androstenone: 121-342µgkg -1 ) for the boar taint compounds were estimated in minced meat, dry fermented sausage and dry-cured ham. Afterwards, sensory evaluation of these products containing 10% tainted meat (minced meat and dry fermented sausage) or moderate boar taint compound levels (dry-cured ham) occurred. The beneficial effect of diluting tainted meat was demonstrated, as no significant difference in consumability was observed between gilts and 10% tainted meat by experts as well as consumers. Also dry-curing proved a promising technique for masking boar taint and preventing consumer dissatisfaction. The obtained results demonstrate the applicability of the estimated thresholds in meat as a tool for identifying masking and reducing strategies on the perception of boar taint. Copyright © 2017 Elsevier Ltd. All rights reserved.

  2. Treatment of non muscle invasive bladder tumor related to the problem of bacillus Calmette-Guerin availability. Consensus of a Spanish expert's panel. Spanish Association of Urology.

    Science.gov (United States)

    Fernández-Gómez, J M; Carballido-Rodríguez, J; Cozar-Olmo, J M; Palou-Redorta, J; Solsona-Narbón, E; Unda-Urzaiz, J M

    2013-01-01

    Since June 2012, the has been a worldwide lack of available of the Connaught strain. In December 2012, a group of experts met in the Spanish Association of Urology to analyze this situation and propose alternatives. To present the work performed by said committee and the resulting recommendations. An update has been made of the principal existing evidence in the treatment of middle and high risk tumors. Special mention has been made regarding the those related with the use of BCG and their possible alternative due to the different availability of BCG. In tumors with high risk of progression, immediate cystectomy should be considered when BCG is not available, with dose reduction or alternating with chemotherapy as methods to economize on the use of BCG when availability is reduced. In tumors having middle risk of progression, chemotherapy can be used, although when it is associated to a high risk of relapse, BCG would be indicated if available with the mentioned savings guidelines. BCG requires maintenance to maintain its effectiveness, it being necessary to optimize the application of endovesical chemotherapy and to use systems that increase its penetration into the bladder wall (EMDA) if they are available. Due to the scarcity of BCG, it has been necessary to agree on a series of recommendations that have been published on the web page of the Spanish Association of Urology. Copyright © 2013 AEU. Published by Elsevier Espana. All rights reserved.

  3. Association analysis for quality traits in a diverse panel of Chinese sesame (Sesamum indicum L.) germplasm.

    Science.gov (United States)

    Wei, Wenliang; Zhang, Yanxin; Lü, Haixia; Li, Donghua; Wang, Linhai; Zhang, Xiurong

    2013-08-01

    The main objective of this study was to evaluate the potential of a sesame (Sesamum indicum L.) panel for association analysis, and investigate the genetic basis of oil content (OC), protein content, oleic acid concentration, and linoleic acid concentration using association mapping. A panel of 216 sesame accessions was phenotyped in a multi-environment trial and fingerprinted with 608 polymorphic loci produced by 79 primers, including simple sequence repeats (SSRs), sequence-related amplified polymorphisms (SRAPs), and amplified fragment length polymorphisms (AFLPs). Population structure analysis revealed two subgroups in the population. The Q model performed better for its ability to re-identify associations for the four traits at highly significant P-values compared to the other three mixed models. And a total of 35 and 25 associations for the four traits in 2010 and 2011 were identified, respectively, with the Q model after Bonferroni correction. Among those associations, only one for OC was re-identified in two environments, and several markers associated simultaneously with multiple traits were discovered. These results suggest the power and stability of the Q model for association analysis of nutritional traits in this sesame panel for its slight population stratification and familial relationship, which could aid in dissecting complex traits, and could help to develop strategies for improving nutritional quality. © 2013 Institute of Botany, Chinese Academy of Sciences.

  4. Analysis of Difference in Center-of-Pressure Positions Between Experts and Novices During Asymmetric Lifting

    Science.gov (United States)

    Yamada, Kenji; Kido, Michiko; Okada, Shima; Nomura, Taishin; Ohno, Yuko

    2016-01-01

    Although numerous studies have analyzed the relationship between manual material handling (MMH) and the forces acting on the lumbar spine, the difference in the MMH between experts and novices through the analysis of measured data has not been well studied. The purpose of this paper was to analyze the difference in the MMH positions between ten skilled experts working at a freight transport company (Group 1) and five unskilled novices without any experience (Group 2) during asymmetric lifting. All the human subjects performed asymmetric lifting experiments with closed eyes; the experiments involved moving loads (6 and 18 kg) to the left side. Time series data of the vertical ground reaction force were measured, using a Wii Balance Board, and then, the center-of-pressure (CoP) trajectories were calculated. The balance board was used for the measurement, because it was reliable, inexpensive, and portable and provided good repeatability even on rough surfaces, and all the information pertaining to the load and worker under various conditions was captured without any omissions. Under the 18 kg load condition, the CoP positions for Group 2 were located on the same side during left asymmetric lifting; however, those for Group 1 were located on the opposite side during left asymmetric lifting (\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{upgreek} \\usepackage{mathrsfs} \\setlength{\\oddsidemargin}{-69pt} \\begin{document} }{}$P CoP positions were located on the opposite side (\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{upgreek} \\usepackage{mathrsfs} \\setlength{\\oddsidemargin}{-69pt} \\begin{document} }{}$P CoP positions between the two different groups could be attributed to the difference in the hip positions. Most skilled experts position their hips in

  5. Neuropathic pain phenotyping by international consensus (NeuroPPIC) for genetic studies: a NeuPSIG systematic review, Delphi survey, and expert panel recommendations.

    Science.gov (United States)

    van Hecke, Oliver; Kamerman, Peter R; Attal, Nadine; Baron, Ralf; Bjornsdottir, Gyda; Bennett, David L H; Bennett, Michael I; Bouhassira, Didier; Diatchenko, Luda; Freeman, Roy; Freynhagen, Rainer; Haanpää, Maija; Jensen, Troels S; Raja, Srinivasa N; Rice, Andrew S C; Seltzer, Zeʼev; Thorgeirsson, Thorgeir E; Yarnitsky, David; Smith, Blair H

    2015-11-01

    For genetic research to contribute more fully to furthering our knowledge of neuropathic pain, we require an agreed, valid, and feasible approach to phenotyping, to allow collaboration and replication in samples of sufficient size. Results from genetic studies on neuropathic pain have been inconsistent and have met with replication difficulties, in part because of differences in phenotypes used for case ascertainment. Because there is no consensus on the nature of these phenotypes, nor on the methods of collecting them, this study aimed to provide guidelines on collecting and reporting phenotypes in cases and controls for genetic studies. Consensus was achieved through a staged approach: (1) systematic literature review to identify all neuropathic pain phenotypes used in previous genetic studies; (2) Delphi survey to identify the most useful neuropathic pain phenotypes and their validity and feasibility; and (3) meeting of experts to reach consensus on the optimal phenotype(s) to be collected from patients with neuropathic pain for genetic studies. A basic "entry level" set of phenotypes was identified for any genetic study of neuropathic pain. This set identifies cases of "possible" neuropathic pain, and controls, and includes: (1) a validated symptom-based questionnaire to determine whether any pain is likely to be neuropathic; (2) body chart or checklist to identify whether the area of pain distribution is neuroanatomically logical; and (3) details of pain history (intensity, duration, any formal diagnosis). This NeuroPPIC "entry level" set of phenotypes can be expanded by more extensive and specific measures, as determined by scientific requirements and resource availability.

  6. Electricity consumption and economic growth in the GCC countries: Panel data analysis

    International Nuclear Information System (INIS)

    Osman, Mohamed; Gachino, Geoffrey; Hoque, Ariful

    2016-01-01

    Applying recent advances in panel data analysis, we investigate the relationship between electricity consumption and economic growth in the GCC countries using annual data from 1975 to 2012. Within a framework which takes into consideration dynamics, heterogeneity and cross-sectional dependence in the panel, we show that the results obtained from using the PMGE, demeaned PMG, AMG, MGE and DFE models indicate a long-run equilibrium relationship between electricity consumption and economic growth. In order to determine the appropriate model and decide the preferred estimator, the Hausman test was performed. The PMGE model emerged as the most efficient of the three estimators. Also, the results obtained revealed a bi-directional causality between economic growth and electricity consumption in these countries, which supports the feedback hypothesis. As a result, this implies that if these countries adopt or implement any energy or electricity conservation policies, this may have a negative impact on its economic growth. - Highlights: • The relationship between electricity consumption and GDP is explored. • Panel data econometric analysis is used to obtain the results. • Bidirectional causality between these variables is observed. • The results support the feedback hypothesis in the GCC countries.

  7. Impact Analysis of Embedded Delamination Location in Hybrid Curved Laminated Composite Stiffened Panel

    Science.gov (United States)

    Naini, Jeevan Kumar; P, Ramesh Babu

    2016-08-01

    Modern, aero structures are predominantly of curved construction characterized by a skin and stiffeners. The latest generation of large passenger aircraft also uses mostly composite material in their primary structure and there is trend towards the utilization of bonding of subcomponents. The presence of delamination is a major problem in composite laminated panels and so, it is of great concern to both the academic and aeronautical industrial worlds Indeed delamination can strongly affect the material strength and, sometimes, can cause their breaking up in service. A Pre-damaged configuration is loaded to study the delamination location and mode for delamination initiation and propagation. A parametric study is conducted to investigate the effect of the location of the delamination propagation when delamination is embedded inbetween plies of the skin-stiffener interface, with the cases i) delamination located at front and inbetween plies of the skin-stiffener interface ii) delamination located in middle and inbetween plies of the skin-stiffener interface iii) delamination located at the end and inbetween plies of the skin- stiffener interface. Further the influence of the location of the delamination on load carrying capacity of the panel is investigated. The effect of location of debonds on crack growth and collapse behavior is analyzed using analysis tool. An analysis tool is applied that includes an approach for predicting interlaminar damage initiation and interlaminar damage growth as well as in-plane damage mechanisms to predict the design of defect free panel.

  8. Three-Dimensional Exact Free Vibration Analysis of Spherical, Cylindrical, and Flat One-Layered Panels

    Directory of Open Access Journals (Sweden)

    Salvatore Brischetto

    2014-01-01

    equilibrium written in orthogonal curvilinear coordinates for the free vibrations of simply supported structures. These equations consider an exact geometry for shells without simplifications. The main novelty is the possibility of a general formulation for different geometries. The equations written in general orthogonal curvilinear coordinates allow the analysis of spherical shell panels and they automatically degenerate into cylindrical shell panel, cylindrical closed shell, and plate cases. Results are proposed for isotropic and orthotropic structures. An exhaustive overview is given of the vibration modes for a number of thickness ratios, imposed wave numbers, geometries, embedded materials, and angles of orthotropy. These results can also be used as reference solutions to validate two-dimensional models for plates and shells in both analytical and numerical form (e.g., closed solutions, finite element method, differential quadrature method, and global collocation method.

  9. Energy prices, technological knowledge and green energy innovation. A dynamic panel analysis of patent counts

    International Nuclear Information System (INIS)

    Kruse, Juergen; Wetzel, Heike; Koeln Univ.

    2014-01-01

    We examine the effect of energy prices and technological knowledge on innovation in green energy technologies. In doing so, we consider both demand-pull effects, which induce innovative activity by increasing the expected value of innovations, and technology-push effects, which drive innovative activity by extending the technological capability of an economy. Our analysis is conducted using patent data from the European Patent Office on a panel of 26 OECD countries over the period 1978-2009. Utilizing a dynamic count data model for panel data, we analyze 11 distinct green energy technologies. Our results indicate that the existing knowledge stock is a significant driver of green energy innovation for all technologies. Furthermore, the results suggest that energy prices have a positive impact on innovation for some but not all technologies and that the e.ect of energy prices and technological knowledge on green energy innovation becomes more pronounced after the Kyoto protocol agreement in 1997.

  10. Image interpretation criteria for FDG PET/CT in multiple myeloma: a new proposal from an Italian expert panel. IMPeTUs (Italian Myeloma criteria for PET USe)

    Energy Technology Data Exchange (ETDEWEB)

    Nanni, Cristina; Rambaldi, Ilaria; Fanti, Stefano [AOU Policlinico S. Orsola-Malpighi, Nuclear Medicine, Bologna (Italy); Zamagni, Elena; Cavo, Michele [AOU Policlinico S. Orsola-Malpighi, Hematology, Bologna (Italy); Versari, Annibale [IRCSS, Nuclear Medicine, S. Maria Nuova Hospital, Reggio Emilia (Italy); Chauvie, Stephane [Santa Croce e Carle Hospital, Medical Physics Unit, Cuneo (Italy); Bianchi, Andrea [Santa Croce e Carle Hospital, Nuclear Medicine, Cuneo (Italy); Rensi, Marco [AOU S.Maria della Misericordia, Nuclear Medicine, Udine (Italy); Bello, Marilena [AO Citta della Salute e della Scienza, Nuclear Medicine, Torino (Italy); Gallamini, Andrea [A Lacassagne Cancer Center, Research and Innovation Department, Nice (France); Patriarca, Francesca [Udine University, Hematologic Clinic, Udine (Italy); Gay, Francesca [University of Torino, Myeloma Unit, Division of Hematology, Torino (Italy); Gamberi, Barbara [IRCCS, Hematology Unit, Azienda Ospedaliera ASMN, Reggio Emilia (Italy)

    2016-03-15

    FDG PET/CT is able to detect active disease in patients with multiple myeloma (MM) and can be helpful for staging and assessing therapy response, but no standard interpretation criteria have been proposed for the evaluation of FDG PET/CT in MM. A group of Italian nuclear medicine physicians and haematologists met to propose new visual interpretation criteria to standardize FDG PET/CT evaluation in MM patients (Italian Myeloma criteria for PET USe; IMPeTUs) and the reproducibility of these criteria was tested. This Italian multicentre protocol was set up as a subprotocol of EMN02, an international prospective multicentre trial of the European Myeloma Network. The criteria were agreed at multidisciplinary consensus meetings. They include a description of the metabolic state of the bone marrow (BM), number and site of focal PET-positive lesions, the number of osteolytic lesions, and the presence and site of extramedullary disease, paramedullary disease and fractures. A visual degree of uptake was defined for the target lesion and extramedullary lesions according to modified Deauville criteria. MM patients who had undergone FDG PET/CT at baseline (PET-0), after induction (PET-AI) and at the end of treatment (PET-EoT) were enrolled. The patients had been prospectively enrolled in EMN02 and their PET scans were a posteriori reinterpreted in a blinded independent central review process managed by WIDEN registered. Five expert nuclear medicine physicians scored the scans according to the new criteria. A case was considered read when four out of the five reviewers completed the report. Concordance among reviewers on different metrics was calculated using Krippendorff's alpha coefficient. A total of 17 consecutive patients were enrolled. On PET-0, the alpha coefficients for the BM score, the score for the hottest focal lesion, the number of focal lesions and the number of lytic lesions were 0.33 and 0.47, 0.40 and 0.32, respectively. On PET-AI, the alpha coefficients

  11. Safety analysis of an expert reactor protection system in nuclear power plants

    International Nuclear Information System (INIS)

    EL-Kafas, A.E.A.E.

    1996-01-01

    the purpose of the dissertation is to develop a real time expert reactor protection system (ERPS) for operational safety of pressurized water reactor nuclear power plant. The system is developed to diagnose plant failures and for identification of plant transients (with and without scram). for this ERPS. probabilistic safety analysis techniques are used to check the availability and priority of the recommended safety system in case of plant accidents . the real- time information during transients and accidents can be obtained to asses the operator in his decision - making . Also, the ERPS is able to give advice for the reactor operator to take the appropriate corrective action during abnormal situations. The system model consists of the dynamic differential equations for reactor core, pressurizer, steam generator, turbine and generator, piping and plenums. The system of equations can be solved by appropriate codes also displayed directly from sensors of the plant. All scenarios of transients, accidents and fault tress for plant systems are learned to ERPS

  12. The impact of expert knowledge on natural hazard susceptibility assessment using spatial multi-criteria analysis

    Science.gov (United States)

    Karlsson, Caroline; Kalantari, Zahra; Mörtberg, Ulla; Olofsson, Bo; Lyon, Steve

    2016-04-01

    Road and railway networks are one of the key factors to a country's economic growth. Inadequate infrastructural networks could be detrimental to a society if the transport between locations are hindered or delayed. Logistical hindrances can often be avoided whereas natural hindrances are more difficult to control. One natural hindrance that can have a severe adverse effect on both infrastructure and society is flooding. Intense and heavy rainfall events can trigger other natural hazards such as landslides and debris flow. Disruptions caused by landslides are similar to that of floods and increase the maintenance cost considerably. The effect on society by natural disasters is likely to increase due to a changed climate with increasing precipitation. Therefore, there is a need for risk prevention and mitigation of natural hazards. Determining susceptible areas and incorporating them in the decision process may reduce the infrastructural harm. Spatial multi-criteria analysis (SMCA) is a part of decision analysis, which provides a set of procedures for analysing complex decision problems through a Geographic Information System (GIS). The objective and aim of this study was to evaluate the usefulness of expert judgements for inundation, landslide and debris flow susceptibility assessments through a SMCA approach using hydrological, geological and land use factors. The sensitivity of the SMCA model was tested in relation to each perspective and impact on the resulting susceptibility. A least cost path function was used to compare new alternative road lines with the existing ones. This comparison was undertaken to identify the resulting differences in the susceptibility assessments using expert judgements as well as historic incidences of flooding and landslides in order to discuss the usefulness of the model in road planning.

  13. Photonically wired spacecraft panels: an economic analysis and demonstrator for telecommunication satellites

    Science.gov (United States)

    Putzer, Philipp; Hurni, Andreas; Ziegler, Bent; Panopoulou, Aikaterini; Lemke, Norbert; Costa, Ivo; Pereira, Celeste

    2017-09-01

    In this paper we present the design of smart satellite panels with integrated optical fibers for sensing and data communication. The project starts with a detailed analysis of the system needs and ends with a demonstrator breadboard showing the full performance during and after environmental tests such as vibrations and temperature. Future science missions will need higher bandwidth in the Gbit/s range for intra-satellite communications, so the step from electrical transmission media towards fiber-optical media is the logical next step to cope with future requirements. In addition, the fibers can be used to monitor temperatures directly underneath satellite payloads which will reduce the integration effort in a later phase. For temperature monitoring so called fiber Bragg gratings (FBGs) are written in special radiation tolerant fibers, which reflection wavelength allows a direct link to temperature at the grating position. A read-out system for FBGs to use within satellite applications is currently under development at OHB. For this study, first the environmental requirements for the panels are derived and in a second stage the functional requirements are defined. To define the functional requirements a telecommunication satellite platform, in the case here the Small-GEO series from OHB, has been taken as baseline. Based on the configuration of temperature sensors, communication lines and electrical signaling a possible replacement by fiber-optical technology was defined and traded w.r.t. its economic benefit. It has been pointed out that the replacement of temperature sensors will reduce harness mass, but the great benefit is seen here in the reduction of assembly effort. Once the satellite panel is manufactured, the temperature sensors are already implemented at certain positions. Another point for mass savings which has pointed out is the replacement of the high-voltage or high- current high power commands (HPC) by fiber optics. Replacing some of the several

  14. Economic Growth and Defense Spending in Greece, Turkey and Cyprus: Evidence from Cointegrated Panel Analysis

    Directory of Open Access Journals (Sweden)

    Stylianou Tasos

    2012-06-01

    Full Text Available This paper investigates the nexus between economic growth and defense spending for three adjacent countries, namely Greece, Turkey and Cyprus. Greece and Cyprus, members-countries of European Union spend much more money than other member countries of EU relatively to their GDP. Turkey is in accession negotiations with EU and is among the top 15 countries with the highest military expenditure. These three countries are particularly interesting case studies because of their high military burdens and the bad relations between them (Greece and Cyprus opposite Turkey. The empirical analysis is based on panel data analysis of data over the period 1960 – 2006.

  15. Expert decisionmaking in risk analysis: The case of the Yucca Mountain facility

    International Nuclear Information System (INIS)

    Shrader-Frechette, K.

    1999-01-01

    Thirty-five or forty centuries ago, there were probably Egyptian experts who argued that they could safeguard the tombs of the pharaohs for 10,000 or a million years. Six centuries ago, there were probably Italian experts who believed that they could secure their Renaissance art treasures. Neither the Egyptians nor the Italians succeeded completely in their efforts. Today's experts, working on permanent nuclear waste disposal, face no easier a task. To understand some of the most difficult problems of expert judgment regarding nuclear repositories, these remarks address, 10 problematic judgments of scientists about the proposed Yucca Mountain permanent nuclear repository for spent fuel and high-level nuclear waste; argue that legal constraints imposed by the US government exacerbate these problems of expert scientific judgment; and conclude that, for any permanent repository program to succeed, nations ought to avoid problems (in expert scientific judgment and in the law) that have dogged US repository efforts

  16. Sound Radiation and Vibration of Composite Panels Excited by Turbulent Flow: Analytical Prediction and Analysis

    Directory of Open Access Journals (Sweden)

    Joana Rocha

    2014-01-01

    structures, in parts where aluminum panels were traditionally being used. An original mathematical framework is presented for the prediction of noise and vibration for composite panels. Results show the effect of panel size, thickness of core, and thickness of face layers on the predictions. Smaller composite panels generally produced lower levels of sound and vibration than longer and wider composite panels. Compared with isotropic panels, the composite panels analyzed generated lower noise levels, although it was observed that noise level was amplified at certain frequencies.

  17. A Panel Cointegration Analysis: An Application To International Tourism Demand Of Thailand

    OpenAIRE

    Chukiat Chaiboonsri; Jittaporn Sriboonjit; Thanes Sriwichailamphan; Prasert Chaitip; Songsak Sriboonchitta

    2010-01-01

    This paper sought to find the long-run relationships between international tourist arrivals in Thailand and economic variables such as GDP, transportation cost and exchange rates during period of 1986 to 2007. Also this paper used five standard panel unit root tests such as LLC (2002) panel unit root test, Breitung (2000) panel unit root test, IPS (2003) panel unit root test, Maddala and Wu (1999) and Choi (2001) panel unit root test and Handri (1999) panel unit root test. Moreover, the panel...

  18. CHAOS THEORY AND THE ROLE OF EXPERT ANALYSIS AS A PERIODIC ATTRACTOR DURING THE 2004 INDIAN OCEAN TSUNAMI

    Directory of Open Access Journals (Sweden)

    Matthew O’Lemmon

    2013-01-01

    Full Text Available The 2004 Indian Ocean Tsunami was epic in scale and scope and will go down as one of the largest natural disasters in human history. This paper presents an analysis of media coverage of the disaster and surveys of 206 local and international tourists in Khao Lak, Thailand, through the framework of chaos theory. Specifically, this paper examines the role of expert analysis as a periodic attractor during and after the tsunami. It will demonstrate how expert analysis brought disparate images and eyewitness testimony into greater focus, creating order in an otherwise chaotic environment.

  19. An Analysis of Malpractice Litigation and Expert Witnesses in Plastic Surgery

    OpenAIRE

    Therattil, Paul J.; Chung, Stella; Sood, Aditya; Granick, Mark S.; Lee, Edward S.

    2017-01-01

    Objective: Expert witness testimony is crucial for juror decision making. The goals of this study were to examine the trends in malpractice litigation in plastic surgery and to examine the characteristics of expert witnesses in litigation. Methods: The Westlaw legal database was queried for jury verdict and settlement reports related to plastic surgery cases from 2009 to 2015. Cases were examined for expert witness testimony, procedure performed, alleged injury, cause of action, verdict, and ...

  20. A single-level random-effects cross-lagged panel model for longitudinal mediation analysis.

    Science.gov (United States)

    Wu, Wei; Carroll, Ian A; Chen, Po-Yi

    2017-12-06

    Cross-lagged panel models (CLPMs) are widely used to test mediation with longitudinal panel data. One major limitation of the CLPMs is that the model effects are assumed to be fixed across individuals. This assumption is likely to be violated (i.e., the model effects are random across individuals) in practice. When this happens, the CLPMs can potentially yield biased parameter estimates and misleading statistical inferences. This article proposes a model named a random-effects cross-lagged panel model (RE-CLPM) to account for random effects in CLPMs. Simulation studies show that the RE-CLPM outperforms the CLPM in recovering the mean indirect and direct effects in a longitudinal mediation analysis when random effects exist in the population. The performance of the RE-CLPM is robust to a certain degree, even when the random effects are not normally distributed. In addition, the RE-CLPM does not produce harmful results when the model effects are in fact fixed in the population. Implications of the simulation studies and potential directions for future research are discussed.

  1. Oil prices, nuclear energy consumption, and economic growth: New evidence using a heterogeneous panel analysis

    International Nuclear Information System (INIS)

    Lee, Chien-Chiang; Chiu, Yi-Bin

    2011-01-01

    This paper applies panel data analysis to examine the short-run dynamics and long-run equilibrium relationships among nuclear energy consumption, oil prices, oil consumption, and economic growth for developed countries covering the period 1971-2006. The panel cointegration results show that in the long run, oil prices have a positive impact on nuclear energy consumption, suggesting the existence of the substitution relationship between nuclear energy and oil. The long-run elasticity of nuclear energy with respect to real income is approximately 0.89, and real income has a greater impact on nuclear energy than do oil prices in the long run. Furthermore, the panel causality results find evidence of unidirectional causality running from oil prices and economic growth to nuclear energy consumption in the long run, while there is no causality between nuclear energy consumption and economic growth in the short run. - Research highlights: → We examine the relationship among nuclear energy consumption, oil prices, oil consumption, and economic growth for developed countries. → The existence of the substitution relationship between nuclear energy and oil. → Real income has a greater impact on nuclear energy than do oil prices in the long run. → An unidirectional causality running from oil prices and economic growth to nuclear energy consumption in the long run.

  2. Choose and Book: a sociological analysis of 'resistance' to an expert system.

    Science.gov (United States)

    Greenhalgh, Trisha; Stones, Rob; Swinglehurst, Deborah

    2014-03-01

    In 2004, the English Department of Health introduced a technology (Choose and Book) designed to help general practitioners and patients book hospital outpatient appointments. It was anticipated that remote booking would become standard practice once technical challenges were overcome. But despite political pressure and financial incentives, Choose and Book remained unpopular and was generally used reluctantly if at all. Policymakers framed this as a problem of 'clinician resistance'. We considered Choose and Book from a sociological perspective. Our dataset, drawn from a qualitative study of computer use in general practice, comprised background documents, field notes, interviews, clinical consultations (directly observed and videotaped) and naturally occurring talk relating to referral to hospital in four general practices. We used strong structuration theory, Giddens' conceptualisation of expert systems, and sensitivity to other sociological perspectives on technology, institutions and professional values to examine the relationship between the external environment, the evolving technology and actions of human agents (GPs, administrators, managers and patients). Choose and Book had the characteristics of an expert system. It served to 'empty out' the content of the consultation as the abstract knowledge it contained was assumed to have universal validity and to over-ride the clinician's application of local knowledge and practical wisdom. Sick patients were incorrectly assumed to behave as rational choosers, able and willing to decide between potential options using abstracted codified information. Our analysis revealed four foci of resistance: to the policy of choice that Choose and Book symbolised and purported to deliver; to accommodating the technology's socio-material constraints; to interference with doctors' contextual judgements; and to adjusting to the altered social relations consequent on its use. We conclude that 'resistance' is a complex phenomenon

  3. Expert systems

    International Nuclear Information System (INIS)

    Haldy, P.A.

    1988-01-01

    The definitions of the terms 'artificial intelligence' and 'expert systems', the methodology, areas of employment and limits of expert systems are discussed. The operation of an expert system is described, especially the presentation and organization of knowledge as well as interference and control. Methods and tools for expert system development are presented and their application in nuclear energy are briefly addressed. 7 figs., 2 tabs., 6 refs

  4. Towards a Computational Analysis of Status and Leadership Styles on FDA Panels

    Science.gov (United States)

    Broniatowski, David A.; Magee, Christopher L.

    Decisions by committees of technical experts are increasingly impacting society. These decision-makers are typically embedded within a web of social relations. Taken as a whole, these relations define an implicit social structure which can influence the decision outcome. Aspects of this structure are founded on interpersonal affinity between parties to the negotiation, on assigned roles, and on the recognition of status characteristics, such as relevant domain expertise. This paper build upon a methodology aimed at extracting an explicit representation of such social structures using meeting transcripts as a data source. Whereas earlier results demonstrated that the method presented here can identify groups of decision-makers with a contextual affinity (i.e., membership in a given medical specialty or voting clique), we now can extract meaningful status hierarchies, and can identify differing facilitation styles among committee chairs. Use of this method is demonstrated on the transcripts of U.S. Food and Drug Administration (FDA) advisory panel meeting transcripts; nevertheless, the approach presented here is extensible to other domains and requires only a meeting transcript as input.

  5. ECG Rhythm Analysis with Expert and Learner-Generated Schemas in Novice Learners

    Science.gov (United States)

    Blissett, Sarah; Cavalcanti, Rodrigo; Sibbald, Matthew

    2015-01-01

    Although instruction using expert-generated schemas is associated with higher diagnostic performance, implementation is resource intensive. Learner-generated schemas are an alternative, but may be limited by increases in cognitive load. We compared expert- and learner-generated schemas for learning ECG rhythm interpretation on diagnostic accuracy,…

  6. Expert system for failure analysis of shafts; Sistema experto para analisis de falla de ejes

    Energy Technology Data Exchange (ETDEWEB)

    Jacobo Armendariz, V.H.; Cerrud Sanchez, S.M.; Ramirez Rodriguez, M.A.; Ortiz Prado, A. [Facultad de Ingenieria, UNAM, Mexico, D.F. (Mexico)

    2002-09-01

    An expert system for the failure analysis in metallic mechanical devices is being Developer at the Mechanical Engineering departments of the Faculty of Engineering of the Universidad Nacional Autonoma de Mexico (UNAM) to provide a solution for the failure analysis in cases where considerable experience in needed. The system pretends to resolve the scarceness of experts in the field of failure analysis and is oriented toward the metal-mechanics industry and will also have didactic applications. The main complication in the development of the system is the broad range of applications envisioned, like gears, shafts, bolts and springs between others. Therefore, it was decided to develop the system in a modular way, using the experience obtained in a first module to proceed faster in the others. The present paper presents the elaboration of the module that analyses shafts. This will serve as the base to expand the system toward other components. It uses the general structure of the global system, including an auxiliary software for the determination of maximum stresses in the corresponding parts. [Spanish] Con el fin de contar con un medio eficaz para la solucion de problemas relacionados con el analisis de falla, en donde la experiencia juega un papel fundamental, el Departamento de Ingenieria Mecanica de la Facultad de ingenieria de la Universidad Nacional Autonoma de Mexico (UNAM) , esta desarrollando el proyecto Sistema experto para analisis de falla de elementos mecanicos, dicho sistema busca resolver el inconveniente de la escasez de expertos y se orienta, tanto a la necesidad de la industria metalmecanica como a la de la docencia. Presenta tambien complicaciones en su desarrollo, ya que se pretende la posibilidad de realizar analisis de falla de elementos como ejes, engranes, pernos, bielas, resortes, tornillos etc. Por lo anterior, se establecio como estrategia el desarrollo del sistema por modulos, ya que teniendo la experiencia de elaboracion de un primer

  7. Two-Dimensional Sequential and Concurrent Finite Element Analysis of Unstiffened and Stiffened Aluminum and Composite Panels with Hole

    Science.gov (United States)

    Razzaq, Zia; Prasad, Venkatesh

    1988-01-01

    The results of a detailed investigation of the distribution of stresses in aluminum and composite panels subjected to uniform end shortening are presented. The focus problem is a rectangular panel with two longitudinal stiffeners, and an inner stiffener discontinuous at a central hole in the panel. The influence of the stiffeners on the stresses is evaluated through a two-dimensional global finite element analysis in the absence or presence of the hole. Contrary to the physical feel, it is found that the maximum stresses from the glocal analysis for both stiffened aluminum and composite panels are greater than the corresponding stresses for the unstiffened panels. The inner discontinuous stiffener causes a greater increase in stresses than the reduction provided by the two outer stiffeners. A detailed layer-by-layer study of stresses around the hole is also presented for both unstiffened and stiffened composite panels. A parallel equation solver is used for the global system of equations since the computational time is far less than that using a sequential scheme. A parallel Choleski method with up to 16 processors is used on Flex/32 Multicomputer at NASA Langley Research Center. The parallel computing results are summarized and include the computational times, speedups, bandwidths, and their inter-relationships for the panel problems. It is found that the computational time for the Choleski method decreases with a decrease in bandwidth, and better speedups result as the bandwidth increases.

  8. Compression After Impact Experiments and Analysis on Honeycomb Core Sandwich Panels with Thin Facesheets

    Science.gov (United States)

    McQuigg, Thomas D.

    2011-01-01

    A better understanding of the effect of impact damage on composite structures is necessary to give the engineer an ability to design safe, efficient structures. Current composite structures suffer severe strength reduction under compressive loading conditions, due to even light damage, such as from low velocity impact. A review is undertaken to access the current state-of-development in the areas of experimental testing, and analysis methods. A set of experiments on honeycomb core sandwich panels, with thin woven fiberglass cloth facesheets, is described, which includes detailed instrumentation and unique observation techniques.

  9. The Validity of Cost Stickiness in Turkey: A Panel Data Analysis in Istanbul Stock Exchange (ISE)

    OpenAIRE

    Celik, Muhsin; Kok, Dundar

    2013-01-01

    The goal of this study is to test the cost stickiness for some firms in Istanbul Stock Exchange (ISE) by panel data analysis. The study is based on 2023 observations of 119 firms whose stocks were in process uninterruptedly in the period of 1995-2011 in ISE. As a result of the study, it is proven that proportional increase in sales resulted in proportional increase in costs to some extent, but proportional decrease in sales resulted in less proportional decrease in costs when compared to the ...

  10. A Finite Element Analysis for Predicting the Residual Compression Strength of Impact-Damaged Sandwich Panels

    Science.gov (United States)

    Ratcliffe, James G.; Jackson, Wade C.

    2008-01-01

    A simple analysis method has been developed for predicting the residual compression strength of impact-damaged sandwich panels. The method is tailored for honeycomb core-based sandwich specimens that exhibit an indentation growth failure mode under axial compression loading, which is driven largely by the crushing behavior of the core material. The analysis method is in the form of a finite element model, where the impact-damaged facesheet is represented using shell elements and the core material is represented using spring elements, aligned in the thickness direction of the core. The nonlinear crush response of the core material used in the analysis is based on data from flatwise compression tests. A comparison with a previous analysis method and some experimental data shows good agreement with results from this new approach.

  11. A Finite Element Analysis for Predicting the Residual Compressive Strength of Impact-Damaged Sandwich Panels

    Science.gov (United States)

    Ratcliffe, James G.; Jackson, Wade C.

    2008-01-01

    A simple analysis method has been developed for predicting the residual compressive strength of impact-damaged sandwich panels. The method is tailored for honeycomb core-based sandwich specimens that exhibit an indentation growth failure mode under axial compressive loading, which is driven largely by the crushing behavior of the core material. The analysis method is in the form of a finite element model, where the impact-damaged facesheet is represented using shell elements and the core material is represented using spring elements, aligned in the thickness direction of the core. The nonlinear crush response of the core material used in the analysis is based on data from flatwise compression tests. A comparison with a previous analysis method and some experimental data shows good agreement with results from this new approach.

  12. Sextant: an expert system for transient analysis of nuclear reactors and integral test facilities

    International Nuclear Information System (INIS)

    Barbet, N.; Dumas, M.; Mihelich, G.

    1987-01-01

    Expert systems provide a new way of dealing with the computer-aided management of nuclear plants by combining several knowledge bases and reasoning modes together with a set of numerical models for real-time analysis of transients. New development tools are required together with metaknowledge bases handling temporal hypothetical reasoning and planning. They have to be efficient and robust because during a transient, neither measurements nor models, nor scenarios are hold as absolute references. SEXTANT is a general purpose physical analyzer intended to provide a pattern and avoid duplication of general tools and knowledge bases for similar applications. It combines several knowledge bases concerning measurements, models and qualitative behavior of PWR with a mechanism of conjecture-refutation and a set of simplified models matching the current physical state. A prototype is under assessment by dealing with integral test facility transients. For its development, SEXTANT requires a powerful shell. SPIRAL is such a toolkit, oriented towards online analysis of complex processes and already used in several applications

  13. Technological change in Swiss thermal waste treatment: An expert-based socio-technical analysis

    International Nuclear Information System (INIS)

    Spoerri, Andy; Lang, Daniel J.; Staeubli, Beat; Scholz, Roland W.

    2010-01-01

    Understanding technological change provides a crucial basis for governing sustainability transitions. In this paper we present an analysis of technological change using the example of Swiss thermal waste processing. In recent years, increased concerns about the low quality of residues from grate-firing systems led to the examination of alternative technologies. Yet despite clear indications of a potential better performance with respect to residue quality, none of these alternatives has been adopted. Based on a two-stage knowledge integration among 15 leading experts, in a retrospective analysis we identified factors that have significantly affected technological change in Swiss thermal waste processing. These factors were then related to three technological options representing different types of technological change, i.e., from incremental improvements of the existing to the implementation of a new technology. The results indicate that technological change is currently in a technological lock-in and provide detailed insights on the causes. The lock-in results in the step-wise further development of the status quo grate-firing system despite its limitations for improving the residue qualities. Almost all factors (legal, economic, societal, technological) of the existing 'thermal waste management' system have been well adapted to the cost- and energy-efficient grate-firing technology, blocking innovative technologies from entering the Swiss market. In addition, pressures from the context, e.g., societal pressure related to landfill risks, have not been strong enough to promote non-incremental change.

  14. Expert Water Quality Panel Review of Responses to the NASA Request for Information for the International Space Station On-Board Environmental Monitoring System

    Science.gov (United States)

    Fishman, Julianna L.; Mudgett, Paul D.; Packham, Nigel J.; Schultz, John R.; Straub, John E., II

    2005-01-01

    On August 9, 2003, NASA, with the cooperative support of the Vehicle Office of the International Space Station Program, the Advanced Human Support Technology Program, and the Johnson Space Center Habitability and Environmental Factors Office released a Request for Information, or RFI, to identify next-generation environmental monitoring systems that have demonstrated ability or the potential to meet defined requirements for monitoring air and water quality onboard the International Space Station. This report summarizes the review and analysis of the proposed solutions submitted to meet the water quality monitoring requirements. Proposals were to improve upon the functionality of the existing Space Station Total Organic Carbon Analyzer (TOCA) and monitor additional contaminants in water samples. The TOCA is responsible for in-flight measurement of total organic carbon, total inorganic carbon, total carbon, pH, and conductivity in the Space Station potable water supplies. The current TOCA requires hazardous reagents to accomplish the carbon analyses. NASA is using the request for information process to investigate new technologies that may improve upon existing capabilities, as well as reduce or eliminate the need for hazardous reagents. Ideally, a replacement for the TOCA would be deployed in conjunction with the delivery of the Node 3 water recovery system currently scheduled for November 2007.

  15. Comprehensive metabolic panel

    Science.gov (United States)

    Metabolic panel - comprehensive; Chem-20; SMA20; Sequential multi-channel analysis with computer-20; SMAC20; Metabolic panel 20 ... Normal values for the panel tests are: Albumin : 3.4 to 5.4 g/dL (34 to 54 g/L) Alkaline phosphatase : 44 to 147 ...

  16. Exploring the brains of Baduk (Go experts: gray matter morphometry, resting-state functional connectivity, and graph theoretical analysis

    Directory of Open Access Journals (Sweden)

    Wi Hoon eJung

    2013-10-01

    Full Text Available One major characteristic of experts is intuitive judgment, which is an automatic process whereby patterns stored in memory through long-term training are recognized. Indeed, long-term training may influence brain structure and function. A recent study revealed that chess experts at rest showed differences in structure and functional connectivity (FC in the head of caudate, which is associated with rapid best next-move generation. However, less is known about the structure and function of the brains of Baduk experts compared with those of experts in other strategy games. Therefore, we performed voxel-based morphometry and FC analyses in Baduk experts to investigate structural brain differences and to clarify the influence of these differences on functional interactions. We also conducted graph theoretical analysis to explore the topological organization of whole-brain functional networks. Compared to novices, Baduk experts exhibited decreased and increased gray matter volume in the amygdala and nucleus accumbens, respectively. We also found increased FC between the amygdala and medial orbitofrontal cortex and decreased FC between the nucleus accumbens and medial prefrontal cortex. Further graph theoretical analysis revealed differences in measures of the integration of the network and in the regional nodal characteristics of various brain regions activated during Baduk. This study provides evidence for structural and functional differences as well as altered topological organization of the whole-brain functional networks in Baduk experts. Our findings also offer novel suggestions about the cognitive mechanisms behind Baduk expertise, which involves intuitive decision-making mediated by somatic marker circuitry and visuospatial processing.

  17. Diagnosing intramammary infections: evaluating expert opinions on the definition of intramammary infection using conjoint analysis.

    Science.gov (United States)

    Andersen, S; Dohoo, I R; Olde Riekerink, R; Stryhn, H

    2010-07-01

    The primary purpose of this study was to develop a set of criteria to serve as a pseudo-gold standard for what constitutes an intramammary infection using data from 3 consecutive quarter milk samples taken 1 wk apart. Data from lactating cows in 90 dairy herds in 4 Canadian provinces were used to generate the data sets (profiles) used in the conjoint analysis to elicit expert opinions on the topic. The experts were selected from the participants (n=23) in the 2007 Mastitis Research Workers' Conference in Minneapolis and from a series of mastitis laboratory courses for bovine practitioners (n=25) in the Netherlands. Three-week udder quarter profiles with specific combinations of somatic cell count, bacterial species isolated, and plate colony count were selected and included in the conjoint analysis based on the desire to achieve even distributions in the categories of 6 constructed variables. The participants were presented with 3 sets of cards with 20 cards in each set. On each card, they were asked to assign a probability of infection on the middle day (test day) in the 3-wk profile. Depending on the set of cards, they were asked only to be concerned with the probability of infection with coagulase-negative staphylococci, Escherichia coli, or Staphylococcus aureus. These 3 organisms were chosen to represent a minor pathogen, a major environmental pathogen, and a major contagious pathogen, respectively. The assigned probabilities for each organism were cross-tabulated according to the number of times the organism of interest was isolated in the 3-wk period, how many colonies of the organism of interest were isolated on the test day, and the somatic cell count (200,000 cells/mL). There was considerable variation in the assigned probabilities within each of the combinations of factors. The median, minimum, and maximum values of the assigned probabilities for each combination were computed. The combinations with a median probability >50% were considered intramammary

  18. A Panel Analysis of the Strategic Association Between Information and Communication Technology and Public Health Delivery

    Science.gov (United States)

    Wu, Sarah Jinhui

    2012-01-01

    Background In this exploratory research, we use panel data analysis to examine the correlation between Information and Communication Technology (ICTs) and public health delivery at the country level. Objective The goal of this exploratory research is to examine the strategic association over time between ICTs and country-level public health. Methods Using data from the World Development Indicators, we construct a panel data set of countries of five different income levels and look closely at the period from 2000 to 2008. The panel data analysis allows us to explore this dynamic relationship under the control for unobserved country-specific effects by using a fixed-effects estimation method. In particular,, we examine the association of five ICT factors with five public health indicators: adolescent fertility rate, child immunization coverage, tuberculosis case detected, life expectancy, and adult mortality rate. Results First, overall ICTs’ factors substantially improve a country’s public health delivery on the top of wealth effect. Second, among all the ICTs’ factors, accessibility is the only one that is associated with improvements in all aspects of public health delivery, while the contributions from the usage, quality, and applications are negligible. ICTs’ accessibility factor is associated with a considerable extension to life expectancy and reduced adult mortality rate. Third, all entity-specific factors are significant in each model, indicating that countries’ economic development level does influence their public health delivery. Conclusions Our results indicate that ICT accessibility has a strong association with effective delivery of public health. There are others, but the key strategic applications are eHealth and mHealth. The findings of this study will help government officials and public health policy makers to formulate strategic decisions regarding the best ICT investments and deployment. For example, the study shows that providing

  19. A panel analysis of the strategic association between information and communication technology and public health delivery.

    Science.gov (United States)

    Wu, Sarah Jinhui; Raghupathi, Wullianallur

    2012-10-22

    In this exploratory research, we use panel data analysis to examine the correlation between Information and Communication Technology (ICTs) and public health delivery at the country level. The goal of this exploratory research is to examine the strategic association over time between ICTs and country-level public health. Using data from the World Development Indicators, we construct a panel data set of countries of five different income levels and look closely at the period from 2000 to 2008. The panel data analysis allows us to explore this dynamic relationship under the control for unobserved country-specific effects by using a fixed-effects estimation method. In particular,, we examine the association of five ICT factors with five public health indicators: adolescent fertility rate, child immunization coverage, tuberculosis case detected, life expectancy, and adult mortality rate. First, overall ICTs' factors substantially improve a country's public health delivery on the top of wealth effect. Second, among all the ICTs' factors, accessibility is the only one that is associated with improvements in all aspects of public health delivery, while the contributions from the usage, quality, and applications are negligible. ICTs' accessibility factor is associated with a considerable extension to life expectancy and reduced adult mortality rate. Third, all entity-specific factors are significant in each model, indicating that countries' economic development level does influence their public health delivery. Our results indicate that ICT accessibility has a strong association with effective delivery of public health. There are others, but the key strategic applications are eHealth and mHealth. The findings of this study will help government officials and public health policy makers to formulate strategic decisions regarding the best ICT investments and deployment. For example, the study shows that providing accessibility should be a critical focus.

  20. Expert Systems for the Analytical Laboratory.

    Science.gov (United States)

    de Monchy, Allan R.; And Others

    1988-01-01

    Discusses two computer problem solving programs: rule-based expert systems and decision analysis expert systems. Explores the application of expert systems to automated chemical analyses. Presents six factors to consider before using expert systems. (MVL)

  1. Expert views on societal responses to different applications of nanotechnology: a comparative analysis of experts in countries with different economic and regulatory environments

    NARCIS (Netherlands)

    Gupta, N.; Fischer, A.R.H.; George, S.; Frewer, L.J.

    2013-01-01

    The introduction of different applications of nanotechnology will be informed by expert views regarding which (types of) application will be most societally acceptable. Previous research in Northern Europe has indicated that experts believe that various factors will be influential, predominant among

  2. Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method.

    Science.gov (United States)

    Xue, Gang; Liu, Yanjun; Zhang, Muqun; Ding, Hongpeng

    2016-01-01

    The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype to mimic the shape of tuna is developed with the revolutionized technology of rapid prototyping manufacturing. The hydrodynamic performance for rigid oscillating hydrofoil is analyzed with the proposed method, and it shows good coherence with the cases analyzed by the commercial software Fluent and the experimental data from robofish. Furthermore, the hydrodynamic performance of coupled hydrofoil, which consisted of flexible fish body and rigid caudal fin, is analyzed with the proposed method. It shows that the caudal fin has great influence on trailing vortex shedding and the phase angle is the key factor on hydrodynamic performance. It is verified that the shape of trailing vortex is similar to the image of the motion curve at the trailing edge as the assumption of linear vortex plane under the condition of small downwash velocity. The numerical analysis of hydrodynamics for bionic movement based on the Panel method has certain value to reveal the fish swimming mechanism.

  3. Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method

    Directory of Open Access Journals (Sweden)

    Gang Xue

    2016-01-01

    Full Text Available The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype to mimic the shape of tuna is developed with the revolutionized technology of rapid prototyping manufacturing. The hydrodynamic performance for rigid oscillating hydrofoil is analyzed with the proposed method, and it shows good coherence with the cases analyzed by the commercial software Fluent and the experimental data from robofish. Furthermore, the hydrodynamic performance of coupled hydrofoil, which consisted of flexible fish body and rigid caudal fin, is analyzed with the proposed method. It shows that the caudal fin has great influence on trailing vortex shedding and the phase angle is the key factor on hydrodynamic performance. It is verified that the shape of trailing vortex is similar to the image of the motion curve at the trailing edge as the assumption of linear vortex plane under the condition of small downwash velocity. The numerical analysis of hydrodynamics for bionic movement based on the Panel method has certain value to reveal the fish swimming mechanism.

  4. Metabolic Panel

    Science.gov (United States)

    A metabolic panel is a group of tests that measures different chemicals in the blood. These tests are usually done on ... and liver. There are two types: basic metabolic panel (BMP) and comprehensive metabolic panel (CMP). The BMP ...

  5. An Analysis of Specific Contracting Issues Regarding the Development and Acquisition of Expert Systems

    Science.gov (United States)

    1990-12-01

    application of the system, the latest technology may not necessarily be the best alternative. Mr. Francisco J. Cantu-Ortiz, of the Instituto Tecnologico y...expert system development process is important, however, an" should be required throughout the process. A recommended approach is that of a " Progress ...Notebook" that would entail a "historic trace" of the entire expert system development process. The " Progress Notebook" would tend to "fill in the

  6. Modelling a Complex System: Using Novice-Expert Analysis for Developing an Effective Technology-Enhanced Learning Environment

    Science.gov (United States)

    Wu, Hsin-Kai

    2010-01-01

    The purposes of this article are to present the design of a technology-enhanced learning environment (Air Pollution Modeling Environment [APoME]) that was informed by a novice-expert analysis and to discuss high school students' development of modelling practices in the learning environment. APoME was designed to help high school students…

  7. Reliability of an Automated High-Resolution Manometry Analysis Program across Expert Users, Novice Users, and Speech-Language Pathologists

    Science.gov (United States)

    Jones, Corinne A.; Hoffman, Matthew R.; Geng, Zhixian; Abdelhalim, Suzan M.; Jiang, Jack J.; McCulloch, Timothy M.

    2014-01-01

    Purpose: The purpose of this study was to investigate inter- and intrarater reliability among expert users, novice users, and speech-language pathologists with a semiautomated high-resolution manometry analysis program. We hypothesized that all users would have high intrarater reliability and high interrater reliability. Method: Three expert…

  8. Expert views on societal responses to different applications of nanotechnology: a comparative analysis of experts in countries with different economic and regulatory environments

    International Nuclear Information System (INIS)

    Gupta, Nidhi; Fischer, Arnout R. H.; George, Saji; Frewer, Lynn J.

    2013-01-01

    The introduction of different applications of nanotechnology will be informed by expert views regarding which (types of) application will be most societally acceptable. Previous research in Northern Europe has indicated that experts believe that various factors will be influential, predominant among these being public perceptions of benefit, need and consumer concern about contact with nanomaterials. These factors are thought by experts to differentiate societal acceptance and rejection of nanotechnology applications. This research utilises a larger sample of experts (N = 67) drawn from Northern America, Europe, Australasia, India and Singapore to examine differences in expert opinion regarding societal acceptance of different applications of nanotechnology within different technological environments, consumer cultures and regulatory regimes. Perceived risk and consumer concerns regarding contact with nano-particles are thought by all experts to drive rejection, and perceived benefits to influence acceptance, independent of country. Encapsulation and delivery of nutrients in food was thought to be the most likely to raise societal concerns, while targeted drug delivery was thought most likely to be accepted. Lack of differentiation between countries suggests that expert views regarding social acceptance may be homogenous, independent of local contextual factors

  9. Expert views on societal responses to different applications of nanotechnology: a comparative analysis of experts in countries with different economic and regulatory environments

    Energy Technology Data Exchange (ETDEWEB)

    Gupta, Nidhi, E-mail: guptanidhi12@gmail.com; Fischer, Arnout R. H., E-mail: arnout.fischer@wur.nl [Wageningen University, Marketing and Consumer Behaviour Group (Netherlands); George, Saji, E-mail: saji_george@nyp.gov.sg [Nanyang Polytechnic, Centre for Sustainable Nanotechnology, School of Chemical and Life Sciences (Singapore); Frewer, Lynn J., E-mail: lynn.frewer@newcastle.ac.uk [Newcastle University, School of Agriculture, Food and Rural Development (United Kingdom)

    2013-08-15

    The introduction of different applications of nanotechnology will be informed by expert views regarding which (types of) application will be most societally acceptable. Previous research in Northern Europe has indicated that experts believe that various factors will be influential, predominant among these being public perceptions of benefit, need and consumer concern about contact with nanomaterials. These factors are thought by experts to differentiate societal acceptance and rejection of nanotechnology applications. This research utilises a larger sample of experts (N = 67) drawn from Northern America, Europe, Australasia, India and Singapore to examine differences in expert opinion regarding societal acceptance of different applications of nanotechnology within different technological environments, consumer cultures and regulatory regimes. Perceived risk and consumer concerns regarding contact with nano-particles are thought by all experts to drive rejection, and perceived benefits to influence acceptance, independent of country. Encapsulation and delivery of nutrients in food was thought to be the most likely to raise societal concerns, while targeted drug delivery was thought most likely to be accepted. Lack of differentiation between countries suggests that expert views regarding social acceptance may be homogenous, independent of local contextual factors.

  10. Bioresorbable Vascular Scaffold Korean Expert Panel Report.

    Science.gov (United States)

    Ahn, Jung Min; Park, Duk Woo; Hong, Sung Jin; Ahn, Young Keun; Hahn, Joo Yong; Kim, Won Jang; Hong, Soon Jun; Nam, Chang Wook; Kang, Do Yoon; Lee, Seung Yul; Chun, Woo Jung; Heo, Jung Ho; Cho, Deok Kyu; Kim, Jin Won; Her, Sung Ho; Kim, Sang Wook; Yoo, Sang Yong; Hong, Myeong Ki; Tahk, Seung Jea; Kim, Kee Sik; Kim, Moo Hyun; Jang, Yangsoo; Park, Seung Jung

    2017-11-01

    Bioresorbable vascular scaffold (BRS) is an innovative device that provides structural support and drug release to prevent early recoil or restenosis, and then degrades into nontoxic compounds to avoid late complications related with metallic drug-eluting stents (DESs). BRS has several putative advantages. However, recent randomized trials and registry studies raised clinical concerns about the safety and efficacy of first generation BRS. In addition, the general guidance for the optimal practice with BRS has not been suggested due to limited long-term clinical data in Korea. To address the safety and efficacy of BRS, we reviewed the clinical evidence of BRS implantation, and suggested the appropriate criteria for patient and lesion selection, scaffold implantation technique, and management. Copyright © 2017. The Korean Society of Cardiology.

  11. Procedures for the elicitation of expert judgements in the probabilistic risk analysis of radioactive waste repositories: an overview

    International Nuclear Information System (INIS)

    Watson, S.R.

    1992-01-01

    In modelling the consequences of a radioactive waste repository using Probabilistic Risk Analysis, it is necessary to use the judgement of experts both in assessing probabilities subjectively, and in choosing suitable analytic frameworks. This report presents the literature on these topics, first discussing the meaning of probability in PRA, and then giving an extensive review of what is known about how to elicit probabilities from experts. The report then provides an overview of the less well developed field of how best to use expertise in the construction of models for PRA. (author)

  12. EXPERT SYSTEMS

    OpenAIRE

    Georgiana Marin; Mihai Catalin Andrei

    2011-01-01

    In recent decades IT and computer systems have evolved rapidly in economic informatics field. The goal is to create user friendly information systems that respond promptly and accurately to requests. Informatics systems evolved into decision assisted systems, and such systems are converted, based on gained experience, in expert systems for creative problem solving that an organization is facing. Expert systems are aimed at rebuilding human reasoning on the expertise obtained from experts, sto...

  13. IMPROVEMENT OF EXPERT ANALYSIS FOR ROAD TRAFFIC ACCIDENTS USING COMPUTER SIMULATION PROGRAMS

    Directory of Open Access Journals (Sweden)

    S. A. Azemsha

    2015-01-01

    Full Text Available The existing methods for auto-technical expertise presuppose selection of some parameters on the basis of the expert’s intuition and experience. Type of a vehicle and its loading rate, road conditions are not taken into account also in the case when deceleration is to be determined. While carrying out the analysis it has been established that an application of special software makes it possible to improve significantly efficiency of the executed works directed on solution of the assigned tasks, to speed up calculation processes, to decrease qualitatively probability of arithmetic errors and provides the possibility to visualize results of the conducted investigations. Possibility of using various models for dynamic motion simulation and collision of vehicles (in the form of 3D-models has been established in the paper. In such a case specific features of vehicle technical conditions, its loading rate and condition of roadway surface have been taken account in the paper. The given paper also permits to obtain a dynamic display of reconstructed accident mechanism in axonometric projection, to film video-clips when a camera is positioned at any spatial point: road, roadside, raised position, moving vehicle, driver's seat in the vehicle.The paper contains an analysis of possibilities of road traffic accident simulation programs, a statistical analysis that shows significance in differences between simulation results when various programs have been used. The paper presents initial data and results of vehicle speed calculation on the basis of braking track length which have been obtained with the help of road traffic accident express analysis (a classical approach and PC-Crash when additional influencing factors are taken into account. A number of shortcomings have been revealed while analyzing the simulation results of the applied software. The shortcomings must be removed in the analyzed software products.On the basis of the executed analysis in

  14. Application of ultrasound phase-shift analysis to authenticate wooden panel paintings.

    Science.gov (United States)

    Bravo, José M; Sánchez-Pérez, Juan V; Ferri, Marcelino; Redondo, Javier; Picó, Rubén

    2014-05-05

    Artworks are a valuable part of the World's cultural and historical heritage. Conservation and authentication of authorship are important aspects to consider in the protection of cultural patrimony. In this paper we present a novel application of a well-known method based on the phase-shift analysis of an ultrasonic signal, providing an integrated encoding system that enables authentication of the authorship of wooden panel paintings. The method has been evaluated in comparison with optical analysis and shows promising results. The proposed method provides an integrated fingerprint of the artwork, and could be used to enrich the cataloging and protection of artworks. Other advantages that make particularly attractive the proposed technique are its robustness and the use of low-cost sensors.

  15. Comparing the treatment of uncertainty in Bayesian networks and fuzzy expert systems used for a human reliability analysis application

    International Nuclear Information System (INIS)

    Baraldi, Piero; Podofillini, Luca; Mkrtchyan, Lusine; Zio, Enrico; Dang, Vinh N.

    2015-01-01

    The use of expert systems can be helpful to improve the transparency and repeatability of assessments in areas of risk analysis with limited data available. In this field, human reliability analysis (HRA) is no exception, and, in particular, dependence analysis is an HRA task strongly based on analyst judgement. The analysis of dependence among Human Failure Events refers to the assessment of the effect of an earlier human failure on the probability of the subsequent ones. This paper analyses and compares two expert systems, based on Bayesian Belief Networks and Fuzzy Logic (a Fuzzy Expert System, FES), respectively. The comparison shows that a BBN approach should be preferred in all the cases characterized by quantifiable uncertainty in the input (i.e. when probability distributions can be assigned to describe the input parameters uncertainty), since it provides a satisfactory representation of the uncertainty and its output is directly interpretable for use within PSA. On the other hand, in cases characterized by very limited knowledge, an analyst may feel constrained by the probabilistic framework, which requires assigning probability distributions for describing uncertainty. In these cases, the FES seems to lead to a more transparent representation of the input and output uncertainty. - Highlights: • We analyse treatment of uncertainty in two expert systems. • We compare a Bayesian Belief Network (BBN) and a Fuzzy Expert System (FES). • We focus on the input assessment, inference engines and output assessment. • We focus on an application problem of interest for human reliability analysis. • We emphasize the application rather than math to reach non-BBN or FES specialists

  16. The Relationship between Income, Income Inequality and Health in Turkey: Evidence from Panel Data Analysis

    Directory of Open Access Journals (Sweden)

    Asuman ÇUKUR

    2011-06-01

    Full Text Available The relationship between health and income has caught increasing attention in welfare economics and policy discussions. Many researches conducted in developed countries regarding income, income inequality and health relations have especially focused on testing assumptions of competing hypothesis that offer different linkages between health and income: absolute income hypothesis and income inequality hypothesis. The main purpose of this study is to investigate income, income inequality and health (infant mortality and under five mortality relations in Turkey within absolute income and income inequality hypotheses framework. The analysis was conducted by using pooled OLS and panel data methods of FE and FD estimations for 1975-2001 aggregated regional data. The results of panel data method of FE and FD estimations supported absolute income hypothesis that higher per capita GDP is associated with lower infant and under five mortality rates in Turkey. Also the result of pooled OLS on infant mortality supported income inequality hypothesis that higher income inequality is associated with higher infant mortality in Turkey

  17. Are standards effective in improving automobile fuel economy? An international panel analysis

    International Nuclear Information System (INIS)

    Clerides, Sofronis; Zachariadis, Theodoros

    2007-01-01

    Although the adoption of fuel economy standards has induced fuel savings in new motor vehicles, there are arguments against standards and in favour of fuel tax increases because the latter may have lower welfare costs. We therefore attempted to analyze the impact of standards and fuel prices in the fuel consumption of new cars with the aid of cross-section time series analysis of data from 18 countries. To our knowledge, this study is the first one that attempts to explore econometrically this issue at an international level. We built an unbalanced panel comprising 384 observations from the US, Canada, Australia, Japan, Switzerland and 13 EU countries spanning a period between 1975 and 2003. We specified a dynamic panel model of fuel economy and estimated the model for the whole sample and also for North America and Europe separately. Based on these estimates, we derived three important policy conclusions. Firstly, it seems that if there were no FE standards or voluntary targets in force, transportation energy use would increase more rapidly. Secondly, if CO 2 targets are not to be tightened in Europe, retail fuel prices might have to double in order to attain the currently discussed target of 120 g CO 2 /km in the future. Thirdly, without higher fuel prices and/or tighter FE standards, one should not expect any marked improvements in fuel economy under 'business as usual' conditions. European policy makers might need to consider this issue carefully because some recent European studies tend to be optimistic in this respect

  18. Fuselage Versus Subcomponent Panel Response Correlation Based on ABAQUS Explicit Progressive Damage Analysis Tools

    Science.gov (United States)

    Gould, Kevin E.; Satyanarayana, Arunkumar; Bogert, Philip B.

    2016-01-01

    Analysis performed in this study substantiates the need for high fidelity vehicle level progressive damage analyses (PDA) structural models for use in the verification and validation of proposed sub-scale structural models and to support required full-scale vehicle level testing. PDA results are presented that capture and correlate the responses of sub-scale 3-stringer and 7-stringer panel models and an idealized 8-ft diameter fuselage model, which provides a vehicle level environment for the 7-stringer sub-scale panel model. Two unique skin-stringer attachment assumptions are considered and correlated in the models analyzed: the TIE constraint interface versus the cohesive element (COH3D8) interface. Evaluating different interfaces allows for assessing a range of predicted damage modes, including delamination and crack propagation responses. Damage models considered in this study are the ABAQUS built-in Hashin procedure and the COmplete STress Reduction (COSTR) damage procedure implemented through a VUMAT user subroutine using the ABAQUS/Explicit code.

  19. Energy Production and Regional Economic Growth in China: A More Comprehensive Analysis Using a Panel Model

    Directory of Open Access Journals (Sweden)

    Yaobin Liu

    2013-03-01

    Full Text Available China has witnessed a fast economic growth in the recent two decades. However, the heavy energy exploitation seems to show a negative relation to regional economic growth. Thus, the issue is whether the energy production is a curse or blessing for the regional economic growth in China. The present study deploys a comprehensive approach to rigorously prove the validity of a proposed panel data model that includes a second generation panel unit root test and panel cointegration and a spatial panel model. The results from the second generation panel unit root test and panel cointegration allowing for cross-sectional dependences show the differenced series are stationary and there exists a cointegration relationship among these variables for all sub-regions. The results from the spatial panel data model support the conjecture of the spatial dependent and show that there is a “resource curse” only for the Western region and Central region in China.

  20. Self-Regulation of Beer Advertising: A Comparative Analysis of Perceived Violations by Adolescents and Experts.

    Science.gov (United States)

    Vendrame, Alan; Silva, Rebeca; Xuan, Ziming; Sparks, Robert; Noel, Jonathan; Pinsky, Ilana

    2015-09-01

    We assessed the impact of the 2010 revisions to Brazil's self-regulatory alcohol marketing code using expert and adolescent raters. Five popular TV beer ads were selected. Ads were rated based on the 2010 Brazilian self-regulatory marketing code. The expert group (N = 31) represented health-related professions; the adolescent group (N = 110) were public high school students. At least 1 ad violated 11 of 17 guidelines included in the study. Ratings by experts and adolescents were similar. Both found violations in all sections of the self-regulatory code, but significant group differences were seen in applying the section that prohibits the promotion of excessive alcohol consumption, with experts identifying more violations than adolescents. Beer ads in the sample systematically violated the self-regulatory standards for alcohol advertising in Brazil according to both experts and youth. Public policies for more effective restrictions and prohibitions in alcohol ads should be considered. © The Author 2015. Medical Council on Alcohol and Oxford University Press. All rights reserved.

  1. The use of cloud enabled building information models – an expert analysis

    Directory of Open Access Journals (Sweden)

    Alan Redmond

    2015-10-01

    Full Text Available The dependency of today’s construction professionals to use singular commercial applications for design possibilities creates the risk of being dictated by the language-tools they use. This unknowingly approach to converting to the constraints of a particular computer application’s style, reduces one’s association with cutting-edge design as no single computer application can support all of the tasks associated with building-design and production. Interoperability depicts the need to pass data between applications, allowing multiple types of experts and applications to contribute to the work at hand. Cloud computing is a centralized heterogeneous platform that enables different applications to be connected to each other through using remote data servers. However, the possibility of providing an interoperable process based on binding several construction applications through a single repository platform ‘cloud computing’ required further analysis. The following Delphi questionnaires analysed the exchanging information opportunities of Building Information Modelling (BIM as the possible solution for the integration of applications on a cloud platform. The survey structure is modelled to; (i identify the most appropriate applications for advancing interoperability at the early design stage, (ii detect the most severe barriers of BIM implementation from a business and legal viewpoint, (iii examine the need for standards to address information exchange between design team, and (iv explore the use of the most common interfaces for exchanging information. The anticipated findings will assist in identifying a model that will enhance the standardized passing of information between systems at the feasibility design stage of a construction project.

  2. The use of cloud enabled building information models – an expert analysis

    Directory of Open Access Journals (Sweden)

    Alan Redmond

    2012-12-01

    Full Text Available The dependency of today’s construction professionals to use singular commercial applications for design possibilities creates the risk of being dictated by the language-tools they use. This unknowingly approach to converting to the constraints of a particular computer application’s style, reduces one’s association with cutting-edge design as no single computer application can support all of the tasks associated with building-design and production. Interoperability depicts the need to pass data between applications, allowing multiple types of experts and applications to contribute to the work at hand. Cloud computing is a centralized heterogeneous platform that enables different applications to be connected to each other through using remote data servers. However, the possibility of providing an interoperable process based on binding several construction applications through a single repository platform ‘cloud computing’ required further analysis. The following Delphi questionnaires analysed the exchanging information opportunities of Building Information Modelling (BIM as the possible solution for the integration of applications on a cloud platform. The survey structure is modelled to; (i identify the most appropriate applications for advancing interoperability at the early design stage, (ii detect the most severe barriers of BIM implementation from a business and legal viewpoint, (iii examine the need for standards to address information exchange between design team, and (iv explore the use of the most common interfaces for exchanging information. The anticipated findings will assist in identifying a model that will enhance the standardized passing of information between systems at the feasibility design stage of a construction project.

  3. Integrated processing and analysis of hydrological data - not only for experts

    Science.gov (United States)

    Kalicz, P.; Gribovszki, Z.

    2012-04-01

    The advent of the digital data logging results huge amount of hydrological time series from wide variety of hydrological phenomenon and water quality indicators. There are different sampling frequencies, irregular time steps, hand measured control data which are necessary treat in the same database. Some processes (e.g. the concentration of surface water) in small catchments and urban areas change quickly thus at this case for a rigorous study it is necessary to apply high frequency data sampling. Sometimes there is an error and the equidistant times series is broken. The error produced gap in the time series forms an obstacle for some type of calculations. There are many proprietary softwares process these data and gives solutions for the exercises. It can be found also open source solutions. Some years ago the open source R was chosen for analyzing data, which are measured in the Hidegvíz Valley experimental catchment. This system is an excellent environment to organize and visualize hydrological time series. The contributing package called zoo has good abilities to work with different temporal resolutions. There are also many sophisticated statistical functions (e.g. auto- and cross-correlation functions, spectral analysis, filters, smoothing algorithms, etc.). During the years some functions was developed for data import, semi-automatic data processing, visualizations and analyses. In the last year in the umbrella of a project brings up a demand for visualize time series from non-R-experts. An easy-to-use graphical user interface was developed to solve this problem instead of cumbersome import/export processes or introduction to R course. This integrated utility uses the integrated Tcl/Tk package and gives possibilities to mouse driven visualization.

  4. Expert System

    DEFF Research Database (Denmark)

    Hildebrandt, Thomas Troels; Cattani, Gian Luca

    2016-01-01

    An expert system is a computer system for inferring knowledge from a knowledge base, typically by using a set of inference rules. When the concept of expert systems was introduced at Stanford University in the early 1970s, the knowledge base was an unstructured set of facts. Today the knowledge...... base of expert systems is often given in terms of an ontology, extracted and built from various data sources by employing natural language-processing and statistics. To emphasize such capabilities, the term “expert” is now often replaced by “cognitive,” “knowledge,” “knowledge-based,” or “intelligent......” system. With very few exceptions, general-purpose expert systems have failed to emerge so far. However, expert systems are applied in specialized domains, particularly in healthcare. The increasing availability of large quantities of data to organizations today provides a valuable opportunity...

  5. Expert systems for analysis and management assistance of nuclear reactor electrical power supplies

    International Nuclear Information System (INIS)

    Evrard, J.M.; Souchet, Y.

    1988-01-01

    Electrical power supplies of nuclear plants are very complex systems. They are studied in many ways: failure consequences, probabilistic risk assessement, failure diagnosis, corrective actions in case of incident ... Knowledge base technology (expert systems) is very suited to solve these problems. A common structural representation can generate specific functional representations; thus we get coherency and easy evolution. This paper shows a two facet methodology: the plant description (both static and dynamic) and reasoning about it. Current applications are developed for pressurized water reactors and gas cooled reactors, using the SPIRAL expert system shell buil at CEA [fr

  6. Flammable gas project expert elicitation results for Hanford Site double-shell tanks

    International Nuclear Information System (INIS)

    Bratzel, D.R.

    1998-01-01

    This report documents the results of the second phase of parameter quantification by the flammable gas expert panel. This second phase is focused on the analysis of flammable gas accidents in the Hanford Site double-shell tanks. The first phase of parameter quantification, performed in 1997 was focused on the analysis of Hanford single-shell tanks

  7. An Empirical Study Of Productivity Growth In EU28 - Spatial Panel Analysis

    Directory of Open Access Journals (Sweden)

    Olejnik Alicja

    2014-12-01

    Full Text Available This paper investigates the spatial process of productivity growth in the European Union on the foundations of the theory of New Economic Geography. The proposed model is based on the study of NUTS 2 regions and takes into consideration a spatial weights matrix in order to better describe the structure of spatial dependence between EU regions. Furthermore, our paper attempts to investigate the applicability of some new approaches to spatial modelling including parameterization of the spatial weights matrix. Our study presents an application of the spatial panel model with fixed effects to Fingleton’s theoretical framework. We suggest that the applied approach constitutes an innovation to spatial econometric studies providing additional information hence, a deeper analysis of the investigated problem.

  8. Global microRNA analysis of the NCI-60 cancer cell panel

    DEFF Research Database (Denmark)

    Søkilde, Rolf; Kaczkowski, Bogumil; Podolska, Agnieszka

    2011-01-01

    MicroRNAs (miRNA) are a group of short noncoding RNAs that regulate gene expression at the posttranscriptional level. They are involved in many biological processes, including development, differentiation, apoptosis, and carcinogenesis. Because miRNAs may play a role in the initiation and progres......MicroRNAs (miRNA) are a group of short noncoding RNAs that regulate gene expression at the posttranscriptional level. They are involved in many biological processes, including development, differentiation, apoptosis, and carcinogenesis. Because miRNAs may play a role in the initiation......-type–specific miRNA patterns by unsupervised hierarchical clustering and statistical analysis. A comparison of our data to three previously published miRNA expression studies on the NCI-60 panel showed a remarkably high correlation between the different technical platforms. In addition, the current work...

  9. Trendwatch combining expert opinion

    NARCIS (Netherlands)

    Hendrix, E.M.T.; Kornelis, M.; Pegge, S.M.; Galen, van M.A.

    2006-01-01

    In this study, focus is on a systematic way to detect future changes in trends that may effect the dynamics in the agro-food sector, and on the combination of opinions of experts. For the combination of expert opinions, the usefulness of multilevel models is investigated. Bayesian data analysis is

  10. Oil demand and price elasticity of energy consumption in the GCC countries: A panel cointegration analysis

    OpenAIRE

    Md Qaiser Alam; Md Shabbir Alam; Syed Ahsan Jamil

    2016-01-01

    This paper examines the cointegrating relationship between oil demand and price elasticity of energy consumption in the Gulf Co-operation Council (GCC) countries during the period 1980-2010. The paper has applied the recently developed panel cointegration techniques, Dynamic Ordinary Least Squares (DOLS) and panel DOLS in a panel of GCC countries. The region is being recognized as the major region of oil production and export in the global economy. In recent times, the region is emerging as a...

  11. An Analysis of Malpractice Litigation and Expert Witnesses in Plastic Surgery.

    Science.gov (United States)

    Therattil, Paul J; Chung, Stella; Sood, Aditya; Granick, Mark S; Lee, Edward S

    2017-01-01

    Objective: Expert witness testimony is crucial for juror decision making. The goals of this study were to examine the trends in malpractice litigation in plastic surgery and to examine the characteristics of expert witnesses in litigation. Methods: The Westlaw legal database was queried for jury verdict and settlement reports related to plastic surgery cases from 2009 to 2015. Cases were examined for expert witness testimony, procedure performed, alleged injury, cause of action, verdict, and indemnity payments. Results: Ninety-three relevant cases were examined. Mean plaintiff award was $1,036,469, whereas mean settlement was $633,960. The most commonly litigated procedures involved breast surgery (34.4%), liposuction (18.3%), and body contouring (14.0%). Cases involving body contouring (risk ratio [RR] = 1.48; 95% CI, 1.04-2.10) were more likely to result in favor of the defendant, whereas cases involving breast surgery (RR = 0.27; 95% CI, 0.13-0.57) were more likely to result in favor of the plaintiff ( P plastic surgeon ( P Plastic surgery litigation tends to favor defendants. Most litigation involves breast surgery, liposuction, and body contouring. The type of procedure and alleged claim affect case success. Parties with a plastic surgeon as an expert witness tend to be more successful in litigation.

  12. CRAW: An expert system for nuclear reactor cover gas alarm analysis

    International Nuclear Information System (INIS)

    Zimmerman, B.D.; Rawlins, J.A.

    1987-08-01

    CRAW is an expert system designed to distinguish fuel pin rupture at the Fast Flux Test Facility. The software is used to evaluate tag gases detected by the alarm system and access operational consequences of a rupture. The ability to distinguish fuel rod as opposed to fuel pin rupture is included. The software is implemented on an IBM-PC

  13. SLC beam line error analysis using a model-based expert system

    International Nuclear Information System (INIS)

    Lee, M.; Kleban, S.

    1988-02-01

    Commissioning particle beam line is usually a very time-consuming and labor-intensive task for accelerator physicists. To aid in commissioning, we developed a model-based expert system that identifies error-free regions, as well as localizing beam line errors. This paper will give examples of the use of our system for the SLC commissioning. 8 refs., 5 figs

  14. Numerical analysis and parametric studies of the buckling of composite orthotropic compression and shear panels

    Science.gov (United States)

    Housner, J. M.; Stein, M.

    1975-01-01

    A computer program is presented which was developed for the combined compression and shear of stiffened variable thickness orthotropic composite panels on discrete springs: boundary conditions are general and include elastic boundary restraints. Buckling solutions are obtained by using a newly developed trigonometric finite difference procedure which improves the solution convergence rate over conventional finite difference methods. The classical general shear buckling results which exist only for simply supported panels over a limited range of orthotropic properties, were extended to the complete range of these properties for simply supported panels and, in addition, to the complete range of orthotropic properties for clamped panels. The program was also applied to parametric studies which examine the effect of filament orientation upon the buckling of graphite-epoxy panels. These studies included an examination of the filament orientations which yield maximum shear or compressive buckling strength for panels having all four edges simply supported or clamped over a wide range of aspect ratios. Panels with such orientations had higher buckling loads than comparable, equal weight, thin skinned aluminum panels. Also included among the parameter studies were examinations of combined axial compression and shear buckling and examinations of panels with rotational elastic edge restraints.

  15. A PANEL COINTEGRATION ANALYSIS: AN APPLICATION TO INTERNATIONAL TOURISM DEMAND OF THAILAND

    Directory of Open Access Journals (Sweden)

    CHUKIAT CHAIBOONSRI

    2010-01-01

    Full Text Available This paper sought to find the long-run relationships between international tourist arrivals in Thailand and economic variables such as GDP, transportation cost and exchange rates during period of 1986 to 2007. Also this paper used five standard panel unit root tests such as LLC (2002 panel unit root test, Breitung (2000 panel unit root test, IPS (2003 panel unit root test, Maddala and Wu (1999 and Choi (2001 panel unit root test and Handri (1999 panel unit root test. Moreover, the panel cointegration test based on Pedroni residual cointegration tests, Kao residual cointegration tests and Johansen fisher panel cointegration test were used to test in panel among the variables. The OLS estimator, DOLS estimator and FMOLS estimator were used to find the long-run relationship of the international tourism demand model for Thailand.The long-run results indicated that growth in income (GDP of Thai’s Asia major tourist source markets (Malaysia, Japan, Korea, China, Singapore and Taiwan have a positive impact on international tourists arrival to Thailand. In addition, the transportation cost of these countries has negative impact on the number of international tourist arrivals to Thailand. Finally Thailand’s currency has positive impact on the number of international tourist arrivals to Thailand. Most of findings from this study were consistent with economic theory and the implications of the model can be use for policy making.

  16. Liquid Hydrogen Regulated Low Pressure High Flow Pneumatic Panel AFT Arrow Analysis

    Science.gov (United States)

    Jones, Kelley, M.

    2013-01-01

    Project Definition: Design a high flow pneumatic regulation panel to be used with helium and hydrogen. The panel will have two circuits, one for gaseous helium (GHe) supplied from the GHe Movable Storage Units (MSUs) and one for gaseous hydrogen (GH2) supplied from an existing GH2 Fill Panel. The helium will supply three legs; to existing panels and on the higher pressure leg and Simulated Flight Tanks (SFTs) for the lower pressure legs. The hydrogen line will pressurize a 33,000 gallon vacuum jacketed vessel.

  17. Expert evaluation of technical documentation 'Analysis of structures of blocks 1-6 of the Kozloduy NPP for the seismic effect of local earthquakes'

    International Nuclear Information System (INIS)

    Jurukovski, D.

    1999-01-01

    The subject of this expert evaluation is the technical documentation 'Analysis of structures of blocks 1-6 of the Kozloduy NPP for the seismic effect of local earthquakes'. It includes reviews of expert evaluations of the parameters of local seismic effects and the analysis of floor response spectra for blocks 3, 4, 5 and 6 at Kozloduy NPP

  18. Fusion Energy: Contextual Analysis of the Information Panels Developed by the Scientific Community versus Citizen Discourse

    International Nuclear Information System (INIS)

    Ferri Anglada, S.; Cornejo Alvarez, J. M.

    2014-01-01

    The report presents an exploratory study on the impact of scientific dissemination, particularly a comparative analysis of two discourses on fusion energy as an alternative energy future. The report introduces a comparative analysis of the institutional discourse, as portrayed by the scientific jargon used in a European travelling exhibition on nuclear fusion Fusion Expo, and the social discourse, as illustrated by a citizen deliberation on this very same exhibition. Through textual analysis, the scientific discourse as deployed in the informative panels at the Fusion Expo is compared with the citizen discourse as developed in the discussions within the citizen groups. The ConText software was applied for such analysis. The purpose is to analyze how visitors assimilate, capture and understand highly technical information. Results suggest that, in despite of convergence points, the two discourses present certain differences, showing diverse levels of communication. The scientific discourse shows a great profusion of formalisms and technicalities of scientific jargon. The citizen discourse shows abundance of words associated with daily life and the more practical aspects (economy, efficiency), concerning institutional and evaluative references. In sum, the study shows that although there are a few common communicative spaces, there are still very few turning points. These data indicate that although exhibitions can be a good tool to disseminate advances in fusion energy in informal learning contexts, public feedback is a powerful tool for improving the quality of social dialogue. (Author)

  19. Experts' memory superiority for domain-specific random material generalizes across fields of expertise: A meta-analysis.

    Science.gov (United States)

    Sala, Giovanni; Gobet, Fernand

    2017-02-01

    Experts' remarkable ability to recall meaningful domain-specific material is a classic result in cognitive psychology. Influential explanations for this ability have focused on the acquisition of high-level structures (e.g., schemata) or experts' capability to process information holistically. However, research on chess players suggests that experts maintain some reliable memory advantage over novices when random stimuli (e.g., shuffled chess positions) are presented. This skill effect cannot be explained by theories emphasizing high-level memory structures or holistic processing of stimuli, because random material does not contain large structures nor wholes. By contrast, theories hypothesizing the presence of small memory structures-such as chunks-predict this outcome, because some chunks still occur by chance in the stimuli, even after randomization. The current meta-analysis assessed the correlation between level of expertise and recall of random material in diverse domains. The overall correlation was moderate but statistically significant ([Formula: see text]), and the effect was observed in nearly every study. This outcome suggests that experts partly base their superiority on a vaster amount of small memory structures, in addition to high-level structures or holistic processing.

  20. Knowledge-based expert systems and a proof-of-concept case study for multiple sequence alignment construction and analysis.

    Science.gov (United States)

    Aniba, Mohamed Radhouene; Siguenza, Sophie; Friedrich, Anne; Plewniak, Frédéric; Poch, Olivier; Marchler-Bauer, Aron; Thompson, Julie Dawn

    2009-01-01

    The traditional approach to bioinformatics analyses relies on independent task-specific services and applications, using different input and output formats, often idiosyncratic, and frequently not designed to inter-operate. In general, such analyses were performed by experts who manually verified the results obtained at each step in the process. Today, the amount of bioinformatics information continuously being produced means that handling the various applications used to study this information presents a major data management and analysis challenge to researchers. It is now impossible to manually analyse all this information and new approaches are needed that are capable of processing the large-scale heterogeneous data in order to extract the pertinent information. We review the recent use of integrated expert systems aimed at providing more efficient knowledge extraction for bioinformatics research. A general methodology for building knowledge-based expert systems is described, focusing on the unstructured information management architecture, UIMA, which provides facilities for both data and process management. A case study involving a multiple alignment expert system prototype called AlexSys is also presented.

  1. Exposing the Expert Discourse in Psychiatry: A Critical Analysis of an Anti-Stigma/Mental Illness Awareness Campaign

    Directory of Open Access Journals (Sweden)

    Jean Daniel Jacob

    2015-01-01

    Full Text Available Drawing on a situational analysis of a recent anti-stigma campaign in psychiatry (Defeat Denial: Help Defeat Mental Illness this paper seeks to engage with the reader on the use of an expert discourse that focuses on the brain and its disruption as a way to address stigma associated with mental illness. To begin, we briefly highlight key statistics regarding the impact of mental illness in Canada and introduce the concept of stigma. We then introduce the Defeat Denial media campaign and describe the analytical process employed for this paper - Situational Analysis with a specific focus on discourse. We then expand on the use of the expert discourse in the awareness campaign by making connections with Rose’s concept of biological citizen and, in the final sections, present recent studies on stigma that highlight the paradox and contested construction of the (biopsychiatric self

  2. Did residential electricity rates fall after retail competition? A dynamic panel analysis

    International Nuclear Information System (INIS)

    Swadley, Adam; Yücel, Mine

    2011-01-01

    A key selling point for the restructuring of electricity markets was the promise of lower prices. There is not much consensus in earlier studies on the effects of electricity deregulation in the U.S., particularly for residential customers. Part of the reason for not finding a consistent link with deregulation and lower prices was that the removal of transitional price caps led to higher prices. In addition, the timing of the removal of price caps coincided with rising fuel prices, which were passed on to consumers in a competitive market. Using a dynamic panel model, we analyze the effect of participation rates, fuel costs, market size, a rate cap and switch to competition for 16 states and the District of Columbia. We find that an increase in participation rates, price controls, a larger market, and high shares of hydro in electricity generation lower retail prices, while increases in natural gas and coal prices increase rates. We also find that retail competition makes the market more efficient by lowering the markup of retail prices over wholesale costs. The effects of a competitive retail electricity market are mixed across states, but generally appear to lower prices in states with high participation rates. - Highlights: ► We analyze the effects of retail competition in electricity markets on residential retail prices. ► Analysis carried out using a dynamic panel model; monthly data for 17 U.S. states. ► More customer participation and larger market lead to lower prices. ► Higher fuel costs increase retail prices, but with a lag. ► Retail competition leads to a more efficient electricity market.

  3. Direct-to-consumer advertising for bleeding disorders: a content analysis and expert evaluation of advertising claims

    Science.gov (United States)

    Abel, G. A.; Neufeld, E. J.; Sorel, M; Weeks, J. C.

    2009-01-01

    OBJECTIVE In the United States, the Food and Drug Administration (FDA) requires that all direct-to-consumer advertising (DTCA) contain both an accurate statement of a medication’s effects (“truth”) and an even-handed discussion of its benefits and risks/adverse effects (“fair balance”). DTCA for medications to treat rare diseases such as bleeding disorders is unlikely to be given high priority for FDA review. METHODS We reviewed all DTCA for bleeding disorder products appearing in the patient-directed magazine HemeAware from January, 2004 to June, 2006. We categorized the information presented in each advertisement as benefit, risk/adverse effect, or neither, and assessed the amount of text and type size devoted to each. We also assessed the readability of each type of text using the Flesch Reading Ease Score (FRES, where a score of ≥ 65 is considered of average readability), and assessed the accuracy of the advertising claims utilizing a panel of five bleeding disorder experts. RESULTS A total of 39 unique advertisements for 12 products were found. On average, approximately twice the amount of text was devoted to benefits as compared to risks/adverse effects, and the later was more difficult to read (FRES of 20.45 for risks/adverse effects versus 32.08 for benefits; difference of 11.56 [95% CI: 4.52, 18.60]). Only about two-thirds of the advertising claims were considered by a majority of the experts to be based on at least low-quality evidence. CONCLUSION As measured by our methods, print DTCA for bleeding disorders may not reach the FDA’s standards of truth and fair balance. PMID:18647231

  4. Expert opinion on laparoscopic surgery for colorectal cancer parallels evidence from a cumulative meta-analysis of randomized controlled trials.

    Directory of Open Access Journals (Sweden)

    Guillaume Martel

    Full Text Available This study sought to synthesize survival outcomes from trials of laparoscopic and open colorectal cancer surgery, and to determine whether expert acceptance of this technology in the literature has parallel cumulative survival evidence.A systematic review of randomized trials was conducted. The primary outcome was survival, and meta-analysis of time-to-event data was conducted. Expert opinion in the literature (published reviews, guidelines, and textbook chapters on the acceptability of laparoscopic colorectal cancer was graded using a 7-point scale. Pooled survival data were correlated in time with accumulating expert opinion scores.A total of 5,800 citations were screened. Of these, 39 publications pertaining to 23 individual trials were retained. As well, 414 reviews were included (28 guidelines, 30 textbook chapters, 20 systematic reviews, 336 narrative reviews. In total, 5,782 patients were randomized to laparoscopic (n = 3,031 and open (n = 2,751 colorectal surgery. Survival data were presented in 16 publications. Laparoscopic surgery was not inferior to open surgery in terms of overall survival (HR = 0.94, 95% CI 0.80, 1.09. Expert opinion in the literature pertaining to the oncologic acceptability of laparoscopic surgery for colon cancer correlated most closely with the publication of large RCTs in 2002-2004. Although increasingly accepted since 2006, laparoscopic surgery for rectal cancer remained controversial.Laparoscopic surgery for colon cancer is non-inferior to open surgery in terms of overall survival, and has been so since 2004. The majority expert opinion in the literature has considered these two techniques to be equivalent since 2002-2004. Laparoscopic surgery for rectal cancer has been increasingly accepted since 2006, but remains controversial. Knowledge translation efforts in this field appear to have paralleled the accumulation of clinical trial evidence.

  5. Prediction and analysis of 3D hydrofoil and propeller under potential flow using panel method

    Directory of Open Access Journals (Sweden)

    Chen Chen-Wei

    2016-01-01

    Full Text Available Potential flow over an airfoil plays an important historical role in the theory of airfoil. The governing equation for potential flow is Laplace’s equation. One of Green’s identities can be used to write a solution to Laplace’s equation as a boundary integral. Using distributions of singularity solutions and determining their strength via the boundary conditions is the essence of panel method. This paper introduces a quick prediction method of three-dimensional hydrofoil and propeller performance based on panel method. The surface of hydrofoil and propeller is divided into numbers of quadrilateral panels. Combined sources with doublets singularities will be distributed on the corners of panels. Calculated blade pressure distributions of hydrofoil and propeller agree well with experimental data. Several sample calculations have been included using panel method.

  6. The use of statins alone, or in combination with pioglitazone and other drugs, for the treatment of non-alcoholic fatty liver disease/non-alcoholic steatohepatitis and related cardiovascular risk. An Expert Panel Statement.

    Science.gov (United States)

    Athyros, Vasilios G; Alexandrides, Theodore K; Bilianou, Helen; Cholongitas, Evangelos; Doumas, Michael; Ganotakis, Emmanuel S; Goudevenos, John; Elisaf, Moses S; Germanidis, Georgios; Giouleme, Olga; Karagiannis, Asterios; Karvounis, Charalambos; Katsiki, Niki; Kotsis, Vasilios; Kountouras, Jannis; Liberopoulos, Evangelos; Pitsavos, Christos; Polyzos, Stergios; Rallidis, Loukianos S; Richter, Dimitrios; Tsapas, Apostolos G; Tselepis, Alexandros D; Tsioufis, Konstantinos; Tziomalos, Konstantinos; Tzotzas, Themistoklis; Vasiliadis, Themistoklis G; Vlachopoulos, Charalambos; Mikhailidis, Dimitri P; Mantzoros, Christos

    2017-06-01

    Non-alcoholic fatty liver disease (NAFLD), the most common liver disease, is characterized by accumulation of fat (>5% of the liver tissue), in the absence of alcohol abuse or other chronic liver diseases. It is closely related to the epidemic of obesity, metabolic syndrome or type 2 diabetes mellitus (T2DM). NAFLD can cause liver inflammation and progress to non-alcoholic steatohepatitis (NASH), fibrosis, cirrhosis or hepatocellular cancer (HCC). Nevertheless, cardiovascular disease (CVD) is the most common cause of death in NAFLD/NASH patients. Current guidelines suggest the use of pioglitazone both in patients with T2DM and in those without. The use of statins, though considered safe by the guidelines, have very limited use; only 10% in high CVD risk patients are on statins by tertiary centers in the US. There are data from several animal studies, 5 post hoc analyses of prospective long-term survival studies, and 5 rather small biopsy proven NASH studies, one at baseline and on at the end of the study. All these studies provide data for biochemical and histological improvement of NAFLD/NASH with statins and in the clinical studies large reductions in CVD events in comparison with those also on statins and normal liver. Ezetimibe was also reported to improve NAFLD. Drugs currently in clinical trials seem to have potential for slowing down the evolution of NAFLD and for reducing liver- and CVD-related morbidity and mortality, but it will take time before they are ready to be used in everyday clinical practice. The suggestion of this Expert Panel is that, pending forthcoming randomized clinical trials, physicians should consider using a PPARgamma agonist, such as pioglitazone, or, statin use in those with NAFLD/NASH at high CVD or HCC risk, alone and/or preferably in combination with each other or with ezetimibe, for the primary or secondary prevention of CVD, and the avoidance of cirrhosis, liver transplantation or HCC, bearing in mind that CVD is the main cause

  7. Fertile Soil for Structural Funds? A panel data analysis of the conditional effectiveness of European cohesion policy

    NARCIS (Netherlands)

    Ederveen, S.; de Groot, H.L.F.; Nahuis, R.

    2003-01-01

    Structural funds are the most intensively used policy instrument by the European Union to promote economic growth in its member states and to speed up the process of convergence. This paper empirically explores the effectiveness of European Structural Funds by means of a panel data analysis for 13

  8. Comparative Analysis Of Least Square Regression And Fixed Effect Panel Data Regression Using Road Traffic Accident In Nigeria

    Directory of Open Access Journals (Sweden)

    J.A. Kupolusi

    2015-01-01

    Full Text Available ABSTRACT In this research work attempt was made to critically analyze the effect of Federal Road Safety Corps FRSC to various categories of road traffic accident in Nigeria for a certain period of time over all the states of federation including Federal capital territory. This was done by using panel data regression model. The conventional OLS estimator applied to panel data has over time led to inconsistent estimate of the regression parameters due to lack of adequately handling individual specific effect of the parameters. A better and preferable estimation method was exploited in this analysis to obtain a more reliable result that can be used for prediction of likely future occurrence. Among all the estimation methods considered only the fixed effect panel data regression method with heteroscedasticity variance-covariance tools gives a consistent estimate of the regression parameters.

  9. Forensic molecular genetic diversity analysis of Chinese Hui ethnic group based on a novel STR panel.

    Science.gov (United States)

    Fang, Yating; Guo, Yuxin; Xie, Tong; Jin, Xiaoye; Lan, Qiong; Zhou, Yongsong; Zhu, Bofeng

    2018-03-26

    In present study, the genetic polymorphisms of 22 autosomal short tandem repeat (STR) loci were analyzed in 496 unrelated Chinese Xinjiang Hui individuals. These autosomal STR loci were multiplex amplified and genotyped based on a novel STR panel. There were 246 observed alleles with the allele frequencies ranging from 0.0010 to 0.3609. All polymorphic information content values were higher than 0.7. The combined power of discrimination and the combined probability of exclusion were 0.999999999999999999999999999426766 and 0.999999999860491, respectively. Based on analysis of molecular variance method, genetic differentiation analysis between the Xinjiang Hui and other reported groups were conducted at these 22 loci. The results indicated that there were no significant differences in statistics between Hui group and Northern Han group (including Han groups from Hebei, Henan, Shaanxi provinces), and significant deviations with Southern Han group (including those from Guangdong, Guangxi provinces) at 7 loci, and Uygur group at 10 loci. To sum up, these 22 autosomal STR loci were high genetic polymorphic in Xinjiang Hui group.

  10. How to Design Tobacco Prevention and Control Games for Youth and Adolescents: A Qualitative Analysis of Expert Interviews.

    Science.gov (United States)

    Hall, Amanda K; Mercado, Rebeccah; Anderson-Lewis, Charkarra; Darville, Gabrielle; Bernhardt, Jay M

    2015-12-01

    Games for health, including digital videogames and gaming-based approaches, are increasingly being used in health promotion research and practice. Recently published research has shown that videogames have significant potential to promote healthy behaviors among youth and adolescents. Yet, there is a lack of available evidence-based resources to guide practitioners on the integration of games into tobacco prevention and smoking cessation interventions. To address this gap, expert researchers and game developers were interviewed to further define games for health, explore the current research, and provide recommendations for developing, evaluating, and promoting effective anti-tobacco games. Nationally recognized experts on game development, games for health, tobacco, and health behavior were asked to participate. A qualitative analysis of 25 in-depth individual interviews using a constant comparative approach for emerging themes was conducted. Main themes that emerged from the data analysis included the following: (1) the current state of games for health research to facilitate health behavior change, (2) strategies for how to develop and evaluate games for quality and impact, and (3) recommendations for how to effectively design tobacco prevention and smoking cessation educational videogames that engage youth and adolescents. The synthesized findings identified through these expert interviews offer stakeholders strategies for how to incorporate games for health within their current and future work. Specific recommendations are presented for developers and researchers to consider when developing and evaluating videogames for tobacco prevention and smoking cessation targeted at youth and adolescents.

  11. Titanium Honeycomb Panel Testing

    Science.gov (United States)

    Richards, W. Lance; Thompson, Randolph C.

    1996-01-01

    Thermal-mechanical tests were performed on a titanium honeycomb sandwich panel to experimentally validate the hypersonic wing panel concept and compare test data with analysis. Details of the test article, test fixture development, instrumentation, and test results are presented. After extensive testing to 900 deg. F, non-destructive evaluation of the panel has not detected any significant structural degradation caused by the applied thermal-mechanical loads.

  12. Advice from a medical expert through the Internet on queries about AIDS and hepatitis: analysis of a pilot experiment.

    Directory of Open Access Journals (Sweden)

    Javier Marco

    2006-07-01

    Full Text Available BACKGROUND: Advice from a medical expert on concerns and queries expressed anonymously through the Internet by patients and later posted on the Web, offers a new type of patient-doctor relationship. The aim of the current study was to perform a descriptive analysis of questions about AIDS and hepatitis made to an infectious disease expert and sent through the Internet to a consumer-oriented Web site in the Spanish language. METHODS AND FINDINGS: Questions were e-mailed and the questions and answers were posted anonymously in the "expert-advice" section of a Web site focused on AIDS and hepatitis. We performed a descriptive study and a temporal analysis of the questions received in the first 12 months after the launch of the site. A total of 899 questions were received from December 2003 to November 2004, with a marked linear growth pattern. Questions originated in Spain in 68% of cases and 32% came from Latin America (the Caribbean, Central America, and South America. Eighty percent of the senders were male. Most of the questions concerned HIV infection (79% with many fewer on hepatitis (17%. The highest numbers of questions were submitted just after the weekend (37% of questions were made on Mondays and Tuesdays. Risk factors for contracting HIV infection were the most frequent concern (69%, followed by the window period for detection (12.6%, laboratory results (5.9%, symptoms (4.7%, diagnosis (2.7%, and treatment (2.2%. CONCLUSIONS: Our results confirm a great demand for this type of "ask-the-expert" Internet service, at least for AIDS and hepatitis. Factors such as anonymity, free access, and immediate answers have been key factors in its success.

  13. Nuclear energy consumption and economic growth in OECD countries: Cross-sectionally dependent heterogeneous panel causality analysis

    International Nuclear Information System (INIS)

    Nazlioglu, Saban; Lebe, Fuat; Kayhan, Selim

    2011-01-01

    The purpose of this study is to determine the direction causality between nuclear energy consumption and economic growth in OECD countries. The empirical model that includes capital and labor force as the control variables is estimated for the panel of fourteen OECD countries during the period 1980-2007. Apart from the previous studies in the nuclear energy consumption and economic growth relationship, this study utilizes the novel panel causality approach, which allows both cross-sectional dependency and heterogeneity across countries. The findings show that there is no causality between nuclear energy consumption and economic growth in eleven out of fourteen cases, supporting the neutrality hypothesis. As a sensitivity analysis, we also conduct Toda-Yamamoto time series causality method and find out that the results from the panel causality analysis are slightly different than those from the time-series causality analysis. Thereby, we can conclude that the choice of statistical tools in analyzing the nature of causality between nuclear energy consumption and economic growth may play a key role for policy implications. - Highlights: → Causality between nuclear energy consumption and economic growth is examined for OECD countries. → Panel causality method, which allows cross-sectional dependency and heterogeneity, is utilized. → The neutrality hypothesis is supported.

  14. Impact damage and residual strength analysis of composite panels with bonded stiffeners. [for primary aircraft structures

    Science.gov (United States)

    Madan, Ram C.; Shuart, Mark J.

    1990-01-01

    Blade-stiffened, compression-loaded cover panels were designed, manufactured, analyzed, and tested. All panels were fabricated from IM6/1808I interleafed graphite-epoxy. An orthotropic blade stiffener and an orthotropic skin were selected to satisfy the design requirements for an advanced aircraft configuration. All specimens were impact damaged prior to testing. Experimental results were obtained for three- and five-stiffener panels. Analytical results described interlaminar forces caused by impact and predicted specimen residual strength. The analytical results compared reasonably with the experimental results for residual strength of the specimens.

  15. Electricity consumption in G7 countries: A panel cointegration analysis of residential demand elasticities

    International Nuclear Information System (INIS)

    Narayan, Paresh Kumar; Smyth, Russell; Prasad, Arti

    2007-01-01

    This article applies recently developed panel unit root and panel cointegration techniques to estimate the long-run and short-run income and price elasticities for residential demand for electricity in G7 countries. The panel results indicate that in the long-run residential demand for electricity is price elastic and income inelastic. The study concludes that from an environmental perspective there is potential to use pricing policies in the G7 countries to curtail residential electricity demand, and thus curb carbon emissions, in the long run

  16. Knowledge management: an analysis of the tools of expert knowledge capture

    International Nuclear Information System (INIS)

    Fernandez Larcher, A.

    2009-01-01

    This work proposes the revision of the strategies and tools used to elicit and capture expert knowledge, particularly those suggested by the EPRI and the IAEA. The main objective of this paper consists of examining the effectiveness and scope of the methodologies proposed, in order to apply them and make them suitable according to our institutional context. This article emphasizes the value and usefulness of the interview's methods with the aim of implementing some of them to the activities created and organized by CNEA Nuclear Knowledge Management Group, especially to the ConRRad Project. (author)

  17. [The analysis of opinions of physicians-experts concerning the organization of military medical expertise].

    Science.gov (United States)

    2012-01-01

    The article presents the main results of sociological survey of physicians of military medical commissions of Kirov oblast. It is established that presently the training of students and physicians on the issues of military medical expertise factually does not carry out. Mainly, physicians-experts are trained on their work places. This condition can testify that theory and practice aspects of military medical expertise are not provided in needed proportions. At the same time, the collegiate style in work of physicians of military medical commissions is underdeveloped. The physicians emphasize the need to develop the normative legal base of military medical expertise.

  18. A panel cointegration analysis of the demand for oil in the Middle East

    Energy Technology Data Exchange (ETDEWEB)

    Narayan, Paresh Kumar [Deakin University, Melbourne (Australia). Faculty of Business and Law, School of Accounting, Economics and Finance; Smyth, Russell [Monash University, Melbourne (Australia). Faculty of Business and Economics, Department of Economics

    2007-12-15

    This article applies recently developed panel unit root and panel cointegration techniques to estimate the long-run income and price elasticities for oil in the Middle East. The results for the panel indicate that demand for oil is highly price inelastic and slightly income elastic in the Middle East. There is considerable variation in the results for the income variable across countries, with the coefficient on the income variable statistically insignificant for several countries. The coefficient on the price variable is statistically significant in all cases with the expected sign and the price elasticity is uniformly low. While the results for the income variable differ across countries, the results for the panel as a whole suggest that the demand for oil in the Middle East is being driven largely by strong economic growth, while consumers are largely insensitive to price changes. (author)

  19. A panel cointegration analysis of the demand for oil in the Middle East

    International Nuclear Information System (INIS)

    Narayan, Paresh Kumar; Smyth, Russell

    2007-01-01

    This article applies recently developed panel unit root and panel cointegration techniques to estimate the long-run income and price elasticities for oil in the Middle East. The results for the panel indicate that demand for oil is highly price inelastic and slightly income elastic in the Middle East. There is considerable variation in the results for the income variable across countries, with the coefficient on the income variable statistically insignificant for several countries. The coefficient on the price variable is statistically significant in all cases with the expected sign and the price elasticity is uniformly low. While the results for the income variable differ across countries, the results for the panel as a whole suggest that the demand for oil in the Middle East is being driven largely by strong economic growth, while consumers are largely insensitive to price changes. (author)

  20. Thermal Buckling Analysis of Rectangular Panels Subjected to Humped Temperature Profile Heating

    Science.gov (United States)

    Ko, William I.

    2004-01-01

    This research investigates thermal buckling characteristics of rectangular panels subjected to different types of humped temperature profile heating. Minimum potential energy and finite-element methods are used to calculate the panel buckling temperatures. The two methods give fairly close thermal buckling solutions. 'Buckling temperature magnification factor of the first kind, eta' is established for the fixed panel edges to scale up the buckling solution of uniform temperature loading case to give the buckling solution of the humped temperature profile loading cases. Also, 'buckling temperature magnification factor of the second kind, xi' is established for the free panel edges to scale up the buckling solution of humped temperature profile loading cases with unheated boundary heat sinks to give the buckling solutions when the boundary heat sinks are heated up.

  1. Modeling and vibro-acoustic analysis of elastically restrained panel backed by irregular sound space

    Science.gov (United States)

    Chen, Yuehua; Jin, G.; Feng, Zhimin; Liu, Zhigang

    2017-11-01

    A general analytical method is developed for the natural features and vibro-acoustic response analysis of an arbitrarily restrained rectangular plate backed by an irregular cavity. The modeling of the structure and the sound space are developed by employing the variational theory based on the sub-structure method. The irregular enclosure is disassembled into sub-cavities and the coupling formulae are deduced. The continuity conditions of both sound pressure and particle velocity at the coupling interface are exactly satisfied. The variational expressions of elastic boundary conditions of the panel are presented and thus the classical boundary conditions can be easily obtained by assigning appropriate elastic coupling coefficients. The vibration and sound pressure solutions are obtained by performing the Rayleigh-Ritz procedure. The accuracy and efficiency of the present method are validated by checking the present results against the finite element method (FEM) results for systems separately with right-angled trapezoidal and concave curved trapezoidal sub-cavity. It is shown that the present method is suitable for a system with an irregular cavity and an elastically restrained plate by exhibiting satisfactory accuracy, fast convergence speed while requiring small computation effort.

  2. Contrast-detail analysis of three flat panel detectors for digital radiography

    International Nuclear Information System (INIS)

    Borasi, Giovanni; Samei, Ehsan; Bertolini, Marco; Nitrosi, Andrea; Tassoni, Davide

    2006-01-01

    In this paper we performed a contrast detail analysis of three commercially available flat panel detectors, two based on the indirect detection mechanism (GE Revolution XQ/i, system A, and Trixell/Philips Pixium 4600, system B) and one based on the direct detection mechanism (Hologic DirectRay DR 1000, system C). The experiment was conducted using standard x-ray radiation quality and a widely used contrast-detail phantom. Images were evaluated using a four alternative forced choice paradigm on a diagnostic-quality softcopy monitor. At the low and intermediate exposures, systems A and B gave equivalent performances. At the high dose levels, system A performed better than system B in the entire range of target sizes, even though the pixel size of system A was about 40% larger than that of system B. At all the dose levels, the performances of the system C (direct system) were lower than those of system A and B (indirect systems). Theoretical analyses based on the Perception Statistical Model gave similar predicted SNR T values corresponding to an observer efficiency of about 0.08 for systems A and B and 0.05 for system C

  3. Environmental profile analysis of MDF panels production: study in a brazilian technological condition

    Directory of Open Access Journals (Sweden)

    Cassiano Moro Piekarski

    2014-09-01

    Full Text Available The main goal of this study was to analyze the environmental profile of MDF panel manufacturing in the Brazilian industry in terms of energy, emissions and dependence on renewable sources. The study was conducted by using the methodology of Life Cycle Assessment (LCA, specifically through the development of the first Life Cycle Inventory (LCI of MDF in a Brazilian industry. The life cycle inventory and the production processes analysis were constructed using Umberto® v.5.6 software and following the ISO 14040 series. The study covers the life cycle of MDF production from gate-to-gate perspective, involving the on-site manufacturing system. The functional unit was defined in 1 m3 of MDF. About 76% of energy required to produce MDF is thermal (52.8% of thermal energy is required for the drying process of wood fiber. CO2 is a major emission during the MDF production, where natural gas contributes to 96.7% of total CO2 fossils. It was observed a low dependence of non-renewable source (19.2% compared with the literature.

  4. Associations between Obesity and Spinal Diseases: A Medical Expenditure Panel Study Analysis

    Directory of Open Access Journals (Sweden)

    Binwu Sheng

    2017-02-01

    Full Text Available Background: The link between body weight status and spinal diseases has been suggested by a number of cross-sectional and cohort studies with a limited range of patient populations. No population-representative samples have been used to examine the link between obesity and spinal diseases. The present study is based on a nationally representative sample drawn from the Medical Expenditure Panel Survey. Methods: Using the cross-sectional sample of the 2014 Medical Expenditure Panel Study, we built four weighted logistic regression analyses of the associations between body weight status and the following four spinal diseases: low back pain, spondylosis, other cervical disorders and intervertebral disc disorder (IDD. Each respondent’s body weight status was used as the key independent variable with three categories: normal/underweight, overweight, and obese. We controlled for marital status, gender, age, smoking status, household income, health insurance coverage, educational attainment and the use of health services for other major categories of diseases. Results: A total sample of 23,048 respondents was used in our analysis. Overweight and obese respondents, as compared to normal/underweight respondents, were more likely to develop lower back problems (Overweight: logged odds = 0.218, p < 0.01; Obese: logged odds = 0.395, p < 0.001 and IDD (Overweight: logged odds = 0.441, p < 0.05; Obese: logged odds = 0.528, p < 0.001. The associations between bodyweight status and spondylitis were statistically insignificant (Overweight: logged odds = 0.281, p = 0.442; Obese: logged odds = 0.680, p = 0.104. The associations between body weight status and other cervical disorders (Overweight: logged odds = −0.116, p = 0.304; Obese: logged odds = −0.160, p = 0.865 were statistically insignificant. Conclusions: As the first study using a national sample to study bodyweight and spinal diseases, our paper supports the hypothesis that obesity adds to the burden

  5. An integrated real-time diagnostic concept using expert systems, qualitative reasoning and quantitative analysis

    Energy Technology Data Exchange (ETDEWEB)

    Edwards, R.M.; Lee, K.Y.; Kumara, S.; Levine, S.H.

    1989-01-01

    An approach for an integrated real-time diagnostic system is being developed for inclusion as an integral part of a power plant automatic control system. In order to participate in control decisions and automatic closed loop operation, the diagnostic system must operate in real-time. Thus far, an expert system with real-time capabilities has been developed and installed on a subsystem at the Experimental Breeder Reactor (EBR-II) in Idaho, USA. Real-time simulation testing of advanced power plant concepts at the Pennsylvania State University has been developed and was used to support the expert system development and installation at EBR-II. Recently, the US National Science Foundation (NSF) and the US Department of Energy (DOE) have funded a Penn State research program to further enhance application of real-time diagnostic systems by pursuing implementation in a distributed power plant computer system including microprocessor based controllers. This paper summarizes past, current, planned, and possible future approaches to power plant diagnostic systems research at Penn State. 34 refs., 9 figs.

  6. An integrated real-time diagnostic concept using expert systems, qualitative reasoning and quantitative analysis

    International Nuclear Information System (INIS)

    Edwards, R.M.; Lee, K.Y.; Kumara, S.; Levine, S.H.

    1989-01-01

    An approach for an integrated real-time diagnostic system is being developed for inclusion as an integral part of a power plant automatic control system. In order to participate in control decisions and automatic closed loop operation, the diagnostic system must operate in real-time. Thus far, an expert system with real-time capabilities has been developed and installed on a subsystem at the Experimental Breeder Reactor (EBR-II) in Idaho, USA. Real-time simulation testing of advanced power plant concepts at the Pennsylvania State University has been developed and was used to support the expert system development and installation at EBR-II. Recently, the US National Science Foundation (NSF) and the US Department of Energy (DOE) have funded a Penn State research program to further enhance application of real-time diagnostic systems by pursuing implementation in a distributed power plant computer system including microprocessor based controllers. This paper summarizes past, current, planned, and possible future approaches to power plant diagnostic systems research at Penn State. 34 refs., 9 figs

  7. Analytical and numerical analysis of a “springback-forming” process dedicated to stiffened panels

    OpenAIRE

    Ait ali, Mohamed El Amine; Guines, Dominique; Leotoing, Lionel; Ragneau, Eric

    2015-01-01

    International audience; The aim of this article is to present and to analyze the capabilities of a process named “springback-forming”, dedicated to stiffened panels such asairplane’s fuselage panels. The principle of this forming process is to apply a tension on the stiffener, before the assembly stage with the sheet in a flatconfiguration using fasteners, adhesives, or a welding process... the bending of the structure is then achieved by springback energy of the stiffener when its tension is...

  8. Expert Witness

    African Journals Online (AJOL)

    Adele

    demonstrated that, on the balance of probabilities, a correct diagnosis at that time would not have altered the course of the illness. Quantum. Where it appears likely that the claimant may have a strong case on both breach of duty and causation, MPS may seek the opinion of a quantum expert to assist in determining the size.

  9. Exploring the brains of Baduk (Go) experts: gray matter morphometry, resting-state functional connectivity, and graph theoretical analysis.

    Science.gov (United States)

    Jung, Wi Hoon; Kim, Sung Nyun; Lee, Tae Young; Jang, Joon Hwan; Choi, Chi-Hoon; Kang, Do-Hyung; Kwon, Jun Soo

    2013-01-01

    One major characteristic of experts is intuitive judgment, which is an automatic process whereby patterns stored in memory through long-term training are recognized. Indeed, long-term training may influence brain structure and function. A recent study revealed that chess experts at rest showed differences in structure and functional connectivity (FC) in the head of caudate, which is associated with rapid best next-move generation. However, less is known about the structure and function of the brains of Baduk experts (BEs) compared with those of experts in other strategy games. Therefore, we performed voxel-based morphometry (VBM) and FC analyses in BEs to investigate structural brain differences and to clarify the influence of these differences on functional interactions. We also conducted graph theoretical analysis (GTA) to explore the topological organization of whole-brain functional networks. Compared to novices, BEs exhibited decreased and increased gray matter volume (GMV) in the amygdala and nucleus accumbens (NA), respectively. We also found increased FC between the amygdala and medial orbitofrontal cortex (mOFC) and decreased FC between the NA and medial prefrontal cortex (mPFC). Further GTA revealed differences in measures of the integration of the network and in the regional nodal characteristics of various brain regions activated during Baduk. This study provides evidence for structural and functional differences as well as altered topological organization of the whole-brain functional networks in BEs. Our findings also offer novel suggestions about the cognitive mechanisms behind Baduk expertise, which involves intuitive decision-making mediated by somatic marker circuitry and visuospatial processing.

  10. Panel 5: Microbiology and immunology panel.

    Science.gov (United States)

    Murphy, Timothy F; Chonmaitree, Tasnee; Barenkamp, Stephen; Kyd, Jennelle; Nokso-Koivisto, Johanna; Patel, Janak A; Heikkinen, Terho; Yamanaka, Noboru; Ogra, Pearay; Swords, W Edward; Sih, Tania; Pettigrew, Melinda M

    2013-04-01

    The objective is to perform a comprehensive review of the literature from January 2007 through June 2011 on the virology, bacteriology, and immunology related to otitis media. PubMed database of the National Library of Medicine. Three subpanels with co-chairs comprising experts in the virology, bacteriology, and immunology of otitis media were formed. Each of the panels reviewed the literature in their respective fields and wrote draft reviews. The reviews were shared with all panel members, and a second draft was created. The entire panel met at the 10th International Symposium on Recent Advances in Otitis Media in June 2011 and discussed the review and refined the content further. A final draft was created, circulated, and approved by the panel. Excellent progress has been made in the past 4 years in advancing an understanding of the microbiology and immunology of otitis media. Advances include laboratory-based basic studies, cell-based assays, work in animal models, and clinical studies. The advances of the past 4 years formed the basis of a series of short-term and long-term research goals in an effort to guide the field. Accomplishing these goals will provide opportunities for the development of novel interventions, including new ways to better treat and prevent otitis media.

  11. Panel 5: Microbiology and Immunology Panel

    Science.gov (United States)

    Murphy, Timothy F.; Chonmaitree, Tasnee; Barenkamp, Stephen; Kyd, Jennelle; Nokso-Koivisto, Johanna; Patel, Janak A.; Heikkinen, Terho; Yamanaka, Noboru; Ogra, Pearay; Swords, W. Edward; Sih, Tania; Pettigrew, Melinda M.

    2014-01-01

    Objective The objective is to perform a comprehensive review of the literature from January 2007 through June 2011 on the virology, bacteriology, and immunology related to otitis media. Data Sources PubMed database of the National Library of Medicine. Review Methods Three subpanels with co-chairs comprising experts in the virology, bacteriology, and immunology of otitis media were formed. Each of the panels reviewed the literature in their respective fields and wrote draft reviews. The reviews were shared with all panel members, and a second draft was created. The entire panel met at the 10th International Symposium on Recent Advances in Otitis Media in June 2011 and discussed the review and refined the content further. A final draft was created, circulated, and approved by the panel. Conclusion Excellent progress has been made in the past 4 years in advancing an understanding of the microbiology and immunology of otitis media. Advances include laboratory-based basic studies, cell-based assays, work in animal models, and clinical studies. Implications for Practice The advances of the past 4 years formed the basis of a series of short-term and long-term research goals in an effort to guide the field. Accomplishing these goals will provide opportunities for the development of novel interventions, including new ways to better treat and prevent otitis media. PMID:23536533

  12. Safety culture in regulatory expert organization : analysis result of survey for KINS employees

    International Nuclear Information System (INIS)

    Choi, G. S.; Choi, Y. S.

    2003-01-01

    Much has been discussed on safety culture of operating organizations, however, little has been done on that of regulatory organization. Current issues and activities related to nuclear safety culture at IAEA, OECD/NEA, etc. were investigated and relevant literatures were reviewed. Elements essential for safety culture of regulatory organization were proposed and survey questionnaire for employees of regulatory expert organization, KINS, was developed based on the elements proposed. The survey result was presented and its implications were discussed. Based on the result, elements of safety culture in regulatory organization were proposed. The result of this survey can be used in developing safety culture model of regulatory organization, measurement method and also promotion of safety culture in regulatory organization

  13. Techniques of structural family assessment: a qualitative analysis of how experts promote a systemic perspective.

    Science.gov (United States)

    Nichols, Michael; Tafuri, Sydney

    2013-06-01

    The trajectory of assessment in structural family therapy moves from a linear perspective, in which problems are located in the identified patient, to an interactional perspective, in which problems are seen as involving other members of the family. Minuchin, Nichols, & Lee (2007) developed a 4-step model for assessing couples and families consisting of: (1) broadening the definition of the presenting complaint to include its context, (2) identifying problem-maintaining interactions, (3) a structurally focused exploration of the past, and (4) developing a shared vision of pathways to change. To study how experts actually implement this model, judges coded video recordings of 10 initial consultations conducted by three widely recognized structural family therapists. Qualitative analyses identified 25 distinct techniques that these clinicians used to challenge linear thinking and move families toward a systemic understanding of their problems. We discuss and locate these techniques in the framework of the 4-step model. © FPI, Inc.

  14. NEPHRUS: model of intelligent multilayers expert system for evaluation of the renal system based on scintigraphic images analysis

    International Nuclear Information System (INIS)

    Silva, Jose W.E. da; Schirru, Roberto; Boasquevisque, Edson M.

    1997-01-01

    This work develops a prototype for the system model based on Artificial Intelligence devices able to perform functions related to scintigraphic image analysis of the urinary system. Criteria used by medical experts for analysis images obtained with 99m Tc+DTPA and/or 99m Tc+DMSA were modeled and a multi resolution diagnosis technique was implemented. Special attention was given to the programs user interface design. Human Factor Engineering techniques were considered so as to ally friendliness and robustness. Results obtained using Artificial Neural Networks for the qualitative image analysis and the knowledge model constructed shows the feasibility of Artificial Intelligence implementation that use 'inherent' abilities of each technique in the resolution of diagnosis image analysis problems. (author). 12 refs., 2 figs., 2 tabs

  15. Expert Systems: What Is an Expert System?

    Science.gov (United States)

    Duval, Beverly K.; Main, Linda

    1994-01-01

    Describes expert systems and discusses their use in libraries. Highlights include parts of an expert system; expert system shells; an example of how to build an expert system; a bibliography of 34 sources of information on expert systems in libraries; and a list of 10 expert system shells used in libraries. (Contains five references.) (LRW)

  16. Expert evaluation of innovation projects of mining enterprises on the basis of methods of system analysis and fuzzy logics

    Directory of Open Access Journals (Sweden)

    Pimonov Alexander

    2017-01-01

    Full Text Available This paper presents the multipurpose approach to evaluation of research and innovation projects based on the method of analysis of hierarchies and fuzzy logics for the mining industry. The approach, implemented as part of a decision support system, can reduce the degree of subjectivity during examinations by taking into account both quantitative and qualitative characteristics of the compared innovative alternatives; it does not depend on specific conditions of examination and allows engagement of experts of various fields of knowledge. The system includes the mechanism of coordination of several experts’ views. Using of fuzzy logics allows evaluating the qualitative characteristics of innovations in the form of formalized logical conclusions.

  17. CORMIX2: An expert system for hydrodynamic mixing zone analysis of conventional and toxic multiport diffuser discharges

    International Nuclear Information System (INIS)

    Akar, P.J.; Jirka, G.H.

    1991-12-01

    One of the most important tasks in the management of water quality is the ability to achieve pollutant concentrations within regulated standards. The Cornell Mixing Zone Expert System (CORMIX) is a series of software systems for the analysis, prediction, and design of aqueous toxic or conventional pollutant discharges into watercourses, with emphasis on the geometry and dilution characteristics of the initial mixing zone. The present development, subsystem CORMIX2 is concerned with submerged multiport discharges into flowing water environments, such as rivers, lakes, estuaries, and coastal waters. It includes effects of ambient stratification, dynamic attachment of the plume to the bottom of the receiving water, and the limiting case of stagnant conditions

  18. Indications for use of thoracic, abdominal, pelvic, and vascular damage control interventions in trauma patients: A content analysis and expert appropriateness rating study.

    Science.gov (United States)

    Roberts, Derek J; Bobrovitz, Niklas; Zygun, David A; Ball, Chad G; Kirkpatrick, Andrew W; Faris, Peter D; Parry, Neil; Nicol, Andrew J; Navsaria, Pradeep H; Moore, Ernest E; Leppäniemi, Ari K; Inaba, Kenji; Fabian, Timothy C; D'Amours, Scott; Brohi, Karim; Stelfox, Henry T

    2015-10-01

    The use of abbreviated or damage control (DC) interventions may improve outcomes in severely injured patients when appropriately indicated. We sought to determine which indications for DC interventions have been most commonly reported in the peer-reviewed literature to date and evaluate the opinions of experts regarding the appropriateness (expected benefit-to-harm ratio) of the reported indications for use in practice. Two investigators used an abbreviated grounded theory method to synthesize indications for 16 different DC interventions reported in peer-reviewed articles between 1983 and 2014 into a reduced number of named, content-characteristic codes representing unique indications. For each indication code, an international panel of trauma surgery experts (n = 9) then rated the appropriateness of conducting the DC intervention of interest in an adult civilian trauma patient. The 424 indications identified in the literature were synthesized into 101 unique indications. The panel assessed 12 (70.6%) of the coded indications for the 7 different thoracic, 47 (78.3%) for the 7 different abdominal/pelvic, and 18 (75.0%) for the 2 different vascular interventions to be appropriate for use in practice. These included indications for rapid lung-sparing surgery (pneumonorrhaphy, pulmonary tractotomy, and pulmonary wedge resection) (n = 1); pulmonary tractotomy (n = 3); rapid, simultaneously stapled pneumonectomy (n = 1); therapeutic mediastinal and/or pleural space packing (n = 4); temporary thoracic closure (n = 3); therapeutic perihepatic packing (n = 28); staged pancreaticoduodenectomy (n = 2); temporary abdominal closure (n = 12); extraperitoneal pelvic packing (n = 5); balloon catheter tamponade (n = 6); and temporary intravascular shunting (n = 11). This study identified a list of candidate appropriate indications for use of 12 different DC interventions that were suggested by authors of peer-reviewed articles and assessed by a panel of independent experts to be

  19. Experimental and Theoretical Analysis of Sound Absorption Properties of Finely Perforated Wooden Panels.

    Science.gov (United States)

    Song, Boqi; Peng, Limin; Fu, Feng; Liu, Meihong; Zhang, Houjiang

    2016-11-22

    Perforated wooden panels are typically utilized as a resonant sound absorbing material in indoor noise control. In this paper, the absorption properties of wooden panels perforated with tiny holes of 1-3 mm diameter were studied both experimentally and theoretically. The Maa-MPP (micro perforated panels) model and the Maa-Flex model were applied to predict the absorption regularities of finely perforated wooden panels. A relative impedance comparison and full-factorial experiments were carried out to verify the feasibility of the theoretical models. The results showed that the Maa-Flex model obtained good agreement with measured results. Control experiments and measurements of dynamic mechanical properties were carried out to investigate the influence of the wood characteristics. In this study, absorption properties were enhanced by sound-induced vibration. The relationship between the dynamic mechanical properties and the panel mass-spring vibration absorption was revealed. While the absorption effects of wood porous structure were not found, they were demonstrated theoretically by using acoustic wave propagation in a simplified circular pipe with a suddenly changed cross-section model. This work provides experimental and theoretical guidance for perforation parameter design.

  20. Experimental and Theoretical Analysis of Sound Absorption Properties of Finely Perforated Wooden Panels

    Directory of Open Access Journals (Sweden)

    Boqi Song

    2016-11-01

    Full Text Available Perforated wooden panels are typically utilized as a resonant sound absorbing material in indoor noise control. In this paper, the absorption properties of wooden panels perforated with tiny holes of 1–3 mm diameter were studied both experimentally and theoretically. The Maa-MPP (micro perforated panels model and the Maa-Flex model were applied to predict the absorption regularities of finely perforated wooden panels. A relative impedance comparison and full-factorial experiments were carried out to verify the feasibility of the theoretical models. The results showed that the Maa-Flex model obtained good agreement with measured results. Control experiments and measurements of dynamic mechanical properties were carried out to investigate the influence of the wood characteristics. In this study, absorption properties were enhanced by sound-induced vibration. The relationship between the dynamic mechanical properties and the panel mass-spring vibration absorption was revealed. While the absorption effects of wood porous structure were not found, they were demonstrated theoretically by using acoustic wave propagation in a simplified circular pipe with a suddenly changed cross-section model. This work provides experimental and theoretical guidance for perforation parameter design.

  1. International migration patterns of physicians to the United States: a cross-national panel analysis.

    Science.gov (United States)

    Hussey, Peter S

    2007-12-01

    To analyze the dynamics of physician international migration patterns and identify the countries deviating most from expected migration rates. A negative binomial log-linear model of physician migration to the United States from every other country was constructed using a panel of country-level data for years 1994-2000. The model was used to identify factors associated with physician migration and to identify countries with higher or lower rates of physician migration than expected. Physician migration varied with a country's GDP per capita in an inverse-U pattern, with highest migration rates from middle-income countries. The absence of medical schools, immigrant networks in the United States, medical instruction in English, proximity to the United States, and the lack of political and civil liberties were also associated with higher migration rates. Countries with higher-than-predicted migration rates included Iceland, Albania, Armenia, Dominica, Lebanon, Syria, the United Arab Emirates, and Bulgaria. Countries with lower-than-predicted migration rates included Mexico, Japan, Brazil, Zimbabwe, Mauritania, Portugal, Senegal, and France. This analysis shows that many of the most powerful factors associated with physician migration are difficult or impossible for countries to change through public policy. GDP per capita and proximity to the U.S. are two of the most powerful predictors of physician migration. Networks of immigrants in the U.S. and fewer political and civil liberties also put countries at higher risk for physician emigration. Several other factors that were associated with physician migration might be more easily amenable to policy intervention. These factors include the absence of a medical school and medical instruction in English. Policies addressing these factors would involve making several difficult tradeoffs, however. Other examples of policies that are effective in minimizing physician migration might be found by examining countries with lower

  2. Physical Activity and Quality of Life in Older Adults: An 18-Month Panel Analysis

    Science.gov (United States)

    Phillips, Siobhan M.; Wójcicki, Thomas R.; McAuley, Edward

    2012-01-01

    Purpose Although physical activity has been associated with quality of life (QOL), the empirical evidence regarding the mechanisms underlying this relationship is limited. In the present study, we examined the mediating roles played by self-efficacy and health status in the physical activity-QOL relationship from baseline to 18-month follow-up in a sample of community dwelling older adults. Methods Community dwelling adults (N = 321, M age = 63.8 years) were recruited to participate in a cross-sectional study and were later contacted to participate in an 18 month follow-up. Individuals completed a battery of questionnaires assessing physical activity, self-efficacy, physical self-worth, disability limitations, and quality of life. A panel analysis within a covariance modeling framework was used to analyze the data. Results Overall the model was a good fit to the data (χ2 = 61.00, df = 29, p physical activity indirectly influencing change in life satisfaction from baseline to 18 months via changes in exercise self-efficacy, physical self-worth, and disability limitations independent of baseline relationships and demographic factors. Specifically, increases in physical activity were associated with increases in exercise self-efficacy which, in turn, was associated with higher physical self-worth and fewer disability limitations which were associated with greater life satisfaction. Conclusions The findings from this study suggest the relationship between physical activity and global QOL in older adults may be mediated by more proximal modifiable outcomes that can be targeted in physical activity programs and interventions. PMID:23161331

  3. [Treatment by panel physicians of patients in protective institutions and homes : Analysis based on secondary data].

    Science.gov (United States)

    Kurch-Bek, Diana; Sundmacher, Leonie; Gallowitz, Christian; Tenckhoff, Bernhard

    2018-02-01

    According to the nursing statistics from 2014 a total of 2.6 million patients in Germany required nursing care of which 1.86 million received care at home and approximately 29 % (764,000 patients) received inpatient treatment exclusively in a nursing home. Reports on the number of long-term nursing care patients usually only include patients with a need of long-term care (according to § 14 German Social Code XI) confirmed by the statutory healthcare insurance. Currently, in Germany there is no nationwide report based on routine (billing) data estimating the number of patients in protective residential homes or institutions, nursing homes or homes for the elderly with nursing personnel (private institutions) based on routine data. This needs to be clarified. The present analysis was based on the nationwide ambulatory statutory healthcare insurance physician (ASHIP) authorized billing data from 2014. An estimation of the number of patients in nursing and retirement homes was made based on the medical services data. Morbidity and outpatient medical healthcare details were analyzed using methods for descriptive analyses. In 2014 a total of 525,863 patients in private nursing homes received ASHIP-authorized treatment, of which 173,233 were treated exclusively in nursing homes by ASHIP-authorized physicians and 352,630 patients were treated in nursing homes as well as in ASHIP-authorized practices. In the year under investigation approximately two thirds of the patients in nursing homes consulted ambulatory practices in addition to care in the nursing home. Nationwide ambulatory ASHIP billing data can substantially contribute to assessment of multimorbidities and provision of long-term healthcare by panel physicians for patients in nursing homes.

  4. Sound transmission through a finite perforated panel set in a rigid baffle: A fully coupled analysis

    Science.gov (United States)

    Akkoorath Mana, Anoop; Sonti, Venkata R.

    2018-02-01

    Sound transmission through a fluid-loaded finite perforated panel set in an infinite unperforated rigid baffle is considered. Using a fully coupled formulation in the 2-D wavenumber domain, the transmitted pressure due to an incident plane wave is obtained. The change in the panel resonances caused by the perforations is accounted for. The formulation also takes into account the self- and inter-modal coupling coefficients arising due to the fluid-loading effect. The derivation is almost entirely analytical with numerical computations done at the very end. Transmission loss (TL) curves are plotted for various cases and the physics is discussed. Along the way an uncoupled calculation is also done for the sake of comparison. The results are mainly for a light medium like air. For a light medium, in general, the perforate impedance is lower than the panel impedance. Thus, most of the transmission happens through the perforations. The panel velocity contribution is insignificant and hence the uncoupled calculation is adequate. In general, the absolute perforate impedance increases with increasing frequency. So does the TL. At low frequencies, because the resistive component of the hole impedance increases, the absolute perforate impedance rises. Thus, the TL curves rise at the lower frequencies. This effect is prominent for sub-millimeter hole radii, i.e., for micro-perforations. An important issue with the TL values for perforated panels is that they sometimes acquire negative values at low frequencies. This apparent anomaly is resolved by showing that at low frequencies there is an additional power component that flows from the baffle region onto the panel. Upon inclusion of this additional term, the TL values remain positive at all frequencies.

  5. Relationship between the intensity of physical activity and depressive symptoms among Korean adults: analysis of Korea Health Panel data

    OpenAIRE

    Noh, Jin-Won; Lee, Sang Ah; Choi, Hyo Jin; Hong, Jin Hyuk; Kim, Min Hee; Kwon, Young Dae

    2015-01-01

    [Purpose] The aim of this study was to examine the relationship between the intensity of physical activity and symptoms of depression. [Subjects and Methods] We analyzed the influence of different intensities of physical activity on depressive symptoms using the data of 12,350 adults over the age of 20?years who had completed the 2011 Korea Health Panel. After controlling for confounding variables, a multivariable logistic regression analysis was conducted to identify the association between ...

  6. Influencing Factors and Development Trend Analysis of China Electric Grid Investment Demand Based on a Panel Co-Integration Model

    OpenAIRE

    Jinchao Li; Lin Chen; Yuwei Xiang; Jinying Li; Dong Peng

    2018-01-01

    Electric grid investment demand analysis is significant to reasonably arranging construction funds for the electric grid and reduce costs. This paper used the panel data of electric grid investment from 23 provinces of China between 2004 and 2016 as samples to analyze the influence between electric grid investment demand and GDP, population scale, social electricity consumption, installed electrical capacity, and peak load based on co-integration tests. We find that GDP and peak load have pos...

  7. Formulation of an improved smeared stiffener theory for buckling analysis of grid-stiffened composite panels

    Science.gov (United States)

    Jaunky, Navin; Knight, Norman F., Jr.; Ambur, Damodar R.

    1995-01-01

    A smeared stiffener theory for stiffened panels is presented that includes skin-stiffener interaction effects. The neutral surface profile of the skin-stiffener combination is developed analytically using the minimum potential energy principle and statics conditions. The skin-stiffener interaction is accounted for by computing the stiffness due to the stiffener and the skin in the skin-stiffener region about the neutral axis at the stiffener. Buckling load results for axially stiffened, orthogrid, and general grid-stiffened panels are obtained using the smeared stiffness combined with a Rayleigh-Ritz method and are compared with results from detailed finite element analyses.

  8. A panel data analysis of the determinants of oil consumption: The case of Australia

    International Nuclear Information System (INIS)

    Narayan, Paresh Kumar; Wong, Philip

    2009-01-01

    The goal of this paper is to examine the determinants of oil consumption for a panel consisting of six Australian States and one territory, namely Queensland, New South Wales, Victoria, Tasmania, South Australia, Western Australia, and the Northern territory, for the period 1985-2006. We find that oil consumption, oil prices and income are panel cointegrated. We estimate long-run elasticities and find that oil prices have had a statistically insignificant impact on oil consumption, while income has had a statistically significant positive effect on oil consumption. (author)

  9. Correlation analysis of heat flux and fire behaviour and hazards of polycrystalline silicon photovoltaic panels

    Science.gov (United States)

    Ju, Xiaoyu; Zhou, Xiaodong; Peng, Fei; Wu, Zhibo; Lai, Dimeng; Hu, Yue; Yang, Lizhong

    2017-05-01

    This work aims to gain a better understanding of fire behaviour and hazards of PV panels under different radiation heat fluxes. The cone calorimeter tests were applied to simulate the situations when the front and back surfaces are exposed to heat flux in a fire, respectively. Through comparison of ignition time, mass loss rate and heat release rate, it is found that the back-up condition is more hazardous than face-up condition. Meanwhile, three key parameters: flashover propensity, total heat release and FED, were introduced to quantitatively illustrate fire hazards of a PV panel.

  10. A panel data analysis of the determinants of oil consumption: The case of Australia

    Energy Technology Data Exchange (ETDEWEB)

    Narayan, Paresh Kumar; Wong, Philip [School of Accounting, Economics and Finance, Faculty of Business and Law, Deakin University, Melbourne (Australia)

    2009-12-15

    The goal of this paper is to examine the determinants of oil consumption for a panel consisting of six Australian States and one territory, namely Queensland, New South Wales, Victoria, Tasmania, South Australia, Western Australia, and the Northern territory, for the period 1985-2006. We find that oil consumption, oil prices and income are panel cointegrated. We estimate long-run elasticities and find that oil prices have had a statistically insignificant impact on oil consumption, while income has had a statistically significant positive effect on oil consumption. (author)

  11. A 1204-single nucleotide polymorphism and insertion-deletion polymorphism panel for massively parallel sequencing analysis of DNA mixtures.

    Science.gov (United States)

    Hwa, Hsiao-Lin; Chung, Wan-Chia; Chen, Pei-Lung; Lin, Chih-Peng; Li, Huei-Ying; Yin, Hsiang-I; Lee, James Chun-I

    2018-01-01

    Massively parallel sequencing (MPS) technology enables the simultaneous analysis of a huge number of single nucleotide polymorphisms (SNPs) and insertion-deletion polymorphisms (indels). MPS also enables the detection of the alleles of minor contributors in a highly unbalanced DNA mixture. In this study, we established a 1204-marker panel optimized for MPS consisting of 987 autosomal markers (964 SNPs and 23 indels), 27 X-chromosome SNPs, 61 Y-chromosome markers (56 SNPs and 5 indels), and 129 mitochondrial SNPs. The DNA samples of six unrelated individuals (two men and four women), 26 nondegraded DNA mixtures (with minor to major ratios of 1:29, 1:39, 1:79, and 1:99), and eight highly artificially degraded DNA mixtures (with minor to major ratios of 1:29, 1:39, 1:79, and 1:99) were analyzed through MPS by using the panel. A scoring system was developed to determine the minor contributors in DNA mixtures based on the genotypes identified using MPS. The genotypes of the 1204 markers were successfully profiled through MPS by using the custom-designed panel. The efficiency of MPS for analyzing these highly degraded samples was lower than that for analyzing nondegraded samples. All minor contributors in the 26 nondegraded and 8 degraded DNA mixtures were accurately assigned using this scoring system based on 964 autosomal SNPs. An association between the observed reads ratio and theoretical ratio of the minor component was noted for nondegraded mixtures. In conclusion, we established a 1204-marker individual identification panel for MPS that successfully analyzed autosomal, X-chromosome, Y-chromosome, and mitochondrial SNPs and indels simultaneously. In combination with the newly developed scoring system, the panel can accurately identify minor contributors in nondegraded and highly degraded DNA mixtures. Copyright © 2017 Elsevier B.V. All rights reserved.

  12. Expert Opinion Analysis on Renewable Hydrogen Storage Systems Potential in Europe

    Directory of Open Access Journals (Sweden)

    Davide Astiaso Garcia

    2016-11-01

    Full Text Available Among the several typologies of storage technologies, mainly on different physical principles (mechanical, electrical and chemical, hydrogen produced by power to gas (P2G from renewable energy sources complies with chemical storage principle and is based on the conversion of electrical energy into chemical energy by means of the electrolysis of water which does not produce any toxic or climate-relevant emission. This paper aims to pinpoint the potential uses of renewable hydrogen storage systems in Europe, analysing current and potential locations, regulatory framework, governments’ outlooks, economic issues, and available renewable energy amounts. The expert opinion survey, already used in many research articles on different topics including energy, has been selected as an effective method to produce realistic results. The obtained results highlight strategies and actions to optimize the storage of hydrogen produced by renewables to face varying electricity demand and generation-driven fluctuations reducing the negative effects of the increasing share of renewables in the energy mix of European Countries.

  13. [Malpractice Claims Against Pediatricians - Analysis of Expert Testimonies from the Medical Service of Health Insurance Companies Between 2000 and 2014].

    Science.gov (United States)

    Steinhauer, Heiko; Holzschuh, Joachim; Böhler, Thomas

    2017-11-01

    Background In Germany, few data are available on medical malpractice claims against pediatricians. On behalf of Statutory Health Insurance Companies their Medical Service (MDK) regularly offers expert testimony in case of allegations during pediatric treatment. Methods Analysis of 374 written pediatric testimonies, documented between September 1st, 2000 and August 31st, 2014. Results 193 allegations against pediatricians were analysed separately for each sector of care (35% concerning outpatients, 28% normal inpatients, and 37% patients treated in an intensive care unit, ICU). Outpatient care led more frequently to malpractice claims regarding diagnosis, most often in the case of dysplasia of the hip (n=6), meningitis (n=5), and pneumonia (n=4). In inpatients, allegations regarding treatment errors were more common and frequently associated with extravasation injury (n=7), as well as periventricular leukomalacia (n=7), sepsis (=6), and intraventricular haemorrhage (n=4) in newborn infants on ICUs. Expert testimony confirmed allegations in 43% of the outpatients, 22% of the normal inpatients and 38% of the ICU patients. Discussion and conclusion The frequency of pediatric malpractice claims seems to depend primarily on the pattern of utilization of pediatric care services. Diagnosis-related constellations leading to malpractice claims in Germany are well-known internationally. Case analysis according to medical care sectors allows comprehensible conclusions for risk management. © Georg Thieme Verlag KG Stuttgart · New York.

  14. Comparing Contingent Valuation, Conjoint Analysis and decition Panels: An Application to the valuation of reduced damages from air pollution in Norway

    Energy Technology Data Exchange (ETDEWEB)

    Halvorsen, B.; Strand, J.; Saelensminde, K.; Wenstoep, F.

    1996-12-31

    The need for assessing values of non-market goods has led to the development of two main groups of valuation approaches, those based on revealed preferences, and those on stated preferences (SP). One of the stated preference approaches, the Contingent Valuation Method, has recently been heavily criticized and alternative SP valuation approaches have appeared. This report discusses three SP approaches to eliciting willingness to pay (WTP) for environmental goods, namely open-ended contingent valuation (OE-CVM), conjoint analysis (CA) and multi-attribute utility theory applied to decision panels of experts (DPE). Each approach has advantages and disadvantages relative to the others and the relation between WTP estimates from the approaches cannot be predicted on prior arguments alone. The three approaches are applied in three different surveys, seeking valuation of specific damages due to air pollution in Norway. In all cases studied, OE-CVM yields the lowest average WTP estimate, while those from CA and EDP are similar. Possible explanations are offered, based on the principle differences between the approaches and on particular features of the three surveys. 35 refs., 10 tabs.

  15. An Approach to the Analysis of Panel Data: The Watergate Hearings and Political Socialization.

    Science.gov (United States)

    Davis, Dennis K.; Lee, Jae-won

    It was the purpose of this study to provide a tool for designing and executing future research on panel data in which relationships between pairs of variables are observed over time so that contingent conditions can be controlled. The 360 subjects were selected from the telephone directory and surveyed at random about their responses to the…

  16. Gender Differences in Outpatient Utilization : A Pooled Analysis of Data from the Korea Health Panel

    NARCIS (Netherlands)

    Noh, Jin-Won; Kim, Kyoung-Beom; Park, Hyunchun; Kwon, Young Dae

    2017-01-01

    Background: This study aims to set itself apart from prior research by elucidating gender differences in outpatient service utilization among adults aged 20 years or older, using nationally representative survey data. Methods: Data from the Korea Health Panel (KHP) collected between 2010 and 2011

  17. Trade spillovers of fiscal policy in the european union: A panel analysis

    NARCIS (Netherlands)

    Beetsma, R.; Giuliodori, M.; Klaassen, F.

    2005-01-01

    We explore the international spillovers from fiscal policy shocks via trade in Europe. A fiscal expansion stimulates domestic activity, which leads to more foreign exports and, hence, higher foreign output. To quantify this, we combine a panel VAR model in government spending, net taxes and GDP with

  18. Trade spill-overs of fiscal policy in the European Union: a panel analysis

    NARCIS (Netherlands)

    Beetsma, R.; Giuliodori, M.; Klaassen, F.

    2006-01-01

    We explore the international spill-overs from fiscal policy shocks via trade in Europe. A fiscal expansion stimulates domestic activity, which leads to more foreign exports and, hence, higher foreign output. To quantify this, we combine a panel VAR model in government spending, net taxes and GDP

  19. Trade spillovers of fiscal policy in the European Union: a panel analysis

    NARCIS (Netherlands)

    Beetsma, R.; Giuliodori, M.; Klaassen, F.

    2005-01-01

    We explore the international spillovers from fiscal policy shocks via trade in Europe. A fiscal expansion stimulates domestic activity, which leads to more foreign exports and, hence, higher foreign output. To quantify this, we combine a panel VAR model in government spending, net taxes and GDP with

  20. Panel Stiffener Debonding Analysis using a Shell/3D Modeling Technique

    Science.gov (United States)

    Krueger, Ronald; Ratcliffe, James G.; Minguet, Pierre J.

    2008-01-01

    A shear loaded, stringer reinforced composite panel is analyzed to evaluate the fidelity of computational fracture mechanics analyses of complex structures. Shear loading causes the panel to buckle. The resulting out -of-plane deformations initiate skin/stringer separation at the location of an embedded defect. The panel and surrounding load fixture were modeled with shell elements. A small section of the stringer foot, web and noodle as well as the panel skin near the delamination front were modeled with a local 3D solid model. Across the width of the stringer fo to, the mixed-mode strain energy release rates were calculated using the virtual crack closure technique. A failure index was calculated by correlating the results with a mixed-mode failure criterion of the graphite/epoxy material. The objective was to study the effect of the fidelity of the local 3D finite element model on the computed mixed-mode strain energy release rates and the failure index.

  1. Panel-Stiffener Debonding and Analysis Using a Shell/3D Modeling Technique

    Science.gov (United States)

    Krueger, Ronald; Ratcliffe, James G.; Minguet, Pierre J.

    2007-01-01

    A shear loaded, stringer reinforced composite panel is analyzed to evaluate the fidelity of computational fracture mechanics analyses of complex structures. Shear loading causes the panel to buckle. The resulting out-of-plane deformations initiate skin/stringer separation at the location of an embedded defect. The panel and surrounding load fixture were modeled with shell elements. A small section of the stringer foot, web and noodle as well as the panel skin near the delamination front were modeled with a local 3D solid model. Across the width of the stringer foot, the mixed-mode strain energy release rates were calculated using the virtual crack closure technique. A failure index was calculated by correlating the results with a mixed-mode failure criterion of the graphite/epoxy material. The objective was to study the effect of the fidelity of the local 3D finite element model on the computed mixed-mode strain energy release rates and the failure index.

  2. Mobility in the Urban Labor Market : A Panel Data Analysis for Mexico

    NARCIS (Netherlands)

    Gong, X.; van Soest, A.H.O.; Villagomez, E.

    2000-01-01

    We analyze mobility in urban Mexico between three labor market states: working in the formal sector, working in the informal sector, and not working. We use a dynamic multinomial logit panel data model with random effects, explaining the labor market state of each individual during each time period.

  3. The readability of expert reports for non-scientist report-users: reports of DNA analysis.

    Science.gov (United States)

    Howes, Loene M; Julian, Roberta; Kelty, Sally F; Kemp, Nenagh; Kirkbride, K Paul

    2014-04-01

    DNA evidence can be extremely compelling. With ongoing scientific advances and applications of DNA evidence in the criminal justice system, it is increasingly important that police, lawyers, and judges recognise both the limitations of DNA evidence and the strength of the evidence in particular cases. Because most forensic sciences are formally communicated via expert reports, we analysed the readability of 68 such reports of DNA evidence from 6 of 8 Australian jurisdictions. We conducted content analyses using three categories: content and sequence, language, and format. Categories contained qualitative and quantitative items drawn from theory and past research. Report styles differed by jurisdiction and by main audience - police and the courts. Reports for police were brief and few links were made between sections in these reports. Reports for courts were less brief and used either legal or scientific styles. Common sections in reports for courts included: the scientist's specialised knowledge; laboratory accreditation information; item list; results; and notes on interpretation. Sections were often not in a logical sequence, due to the use of appendices. According to Flesch Reading Ease scores, reports for police had language that was fairly difficult, and reports for courts, difficult. Difficulty was compounded by the use of specialist terms. Reports for police and the appendices of reports for court often used very small font and single line spacing. Many reports for court contained tables that spanned several pages. Suggestions based on theory and past research are provided to assist scientists to enhance the readability of reports for non-scientists. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

  4. Basic metabolic panel

    Science.gov (United States)

    ... Alternative Names SMAC7; Sequential multi-channel analysis with computer-7; SMA7; Metabolic panel 7; CHEM-7 References ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  5. Advisory expert system for energy analysis in industrial boilers; Sistema experto asesor en el analisis energetico de calderas industriales

    Energy Technology Data Exchange (ETDEWEB)

    Kemper Valverde, Nicolas; Lara Rosano, Felipe; Vazquez Nava, Rodolfo [Laboratorio de Inteligencia Artificial, Instituto de Ingenieria UNAM, Mexico, D. F. (Mexico)

    1994-12-31

    This paper presents an expert system for the operational analysis of industrial boilers, estimating the potential of heat recovery, in the small and medium size industry. The package is friendly, practical, flexible easy to maintain and expandable to take into consideration the user`s specific requirements and allows the analysis of the energy losses in the combustion, feed water, drains, and insulation, identifying the enhancements and estimating the saving potential, in energy as well as economical. [Espanol] En este trabajo se presenta un sistema experto para analizar la operacion de calderas industriales estimando el potencial de recuperacion de calor, en la pequena y mediana industria. El paquete es amigable, practico, flexible, facil en su mantenimiento y expandible para tomar en consideracion los requerimientos especificos de los usuarios y permite el analisis de las perdidas de energia en la combustion, agua de alimentacion, purgas y aislamientos, identificando las mejoras y estimando ahorros potenciales, tanto energeticos como economicos.

  6. OECD/NEA expert group on uncertainty analysis for criticality safety assessment: Results of benchmark on sensitivity calculation (phase III)

    Energy Technology Data Exchange (ETDEWEB)

    Ivanova, T.; Laville, C. [Institut de Radioprotection et de Surete Nucleaire IRSN, BP 17, 92262 Fontenay aux Roses (France); Dyrda, J. [Atomic Weapons Establishment AWE, Aldermaston, Reading, RG7 4PR (United Kingdom); Mennerdahl, D. [E Mennerdahl Systems EMS, Starvaegen 12, 18357 Taeby (Sweden); Golovko, Y.; Raskach, K.; Tsiboulia, A. [Inst. for Physics and Power Engineering IPPE, 1, Bondarenko sq., 249033 Obninsk (Russian Federation); Lee, G. S.; Woo, S. W. [Korea Inst. of Nuclear Safety KINS, 62 Gwahak-ro, Yuseong-gu, Daejeon 305-338 (Korea, Republic of); Bidaud, A.; Sabouri, P. [Laboratoire de Physique Subatomique et de Cosmologie LPSC, CNRS-IN2P3/UJF/INPG, Grenoble (France); Patel, A. [U.S. Nuclear Regulatory Commission (NRC), Washington, DC 20555-0001 (United States); Bledsoe, K.; Rearden, B. [Oak Ridge National Laboratory ORNL, M.S. 6170, P.O. Box 2008, Oak Ridge, TN 37831 (United States); Gulliford, J.; Michel-Sendis, F. [OECD/NEA, 12, Bd des Iles, 92130 Issy-les-Moulineaux (France)

    2012-07-01

    The sensitivities of the k{sub eff} eigenvalue to neutron cross sections have become commonly used in similarity studies and as part of the validation algorithm for criticality safety assessments. To test calculations of the sensitivity coefficients, a benchmark study (Phase III) has been established by the OECD-NEA/WPNCS/EG UACSA (Expert Group on Uncertainty Analysis for Criticality Safety Assessment). This paper presents some sensitivity results generated by the benchmark participants using various computational tools based upon different computational methods: SCALE/TSUNAMI-3D and -1D, MONK, APOLLO2-MORET 5, DRAGON-SUSD3D and MMKKENO. The study demonstrates the performance of the tools. It also illustrates how model simplifications impact the sensitivity results and demonstrates the importance of 'implicit' (self-shielding) sensitivities. This work has been a useful step towards verification of the existing and developed sensitivity analysis methods. (authors)

  7. Analysis of Composite Panel-Stiffener Debonding Using a Shell/3D Modeling Technique

    Science.gov (United States)

    Krueger, Ronald; Ratcliffe, James; Minguet, Pierre J.

    2007-01-01

    Interlaminar fracture mechanics has proven useful for characterizing the onset of delaminations in composites and has been used successfully primarily to investigate onset in fracture toughness specimens and laboratory size coupon type specimens. Future acceptance of the methodology by industry and certification authorities, however, requires the successful demonstration of the methodology on the structural level. For this purpose, a panel was selected that is reinforced with stiffeners. Shear loading causes the panel to buckle, and the resulting out-of-plane deformations initiate skin/stiffener separation at the location of an embedded defect. A small section of the stiffener foot, web and noodle as well as the panel skin in the vicinity of the delamination front were modeled with a local 3D solid model. Across the width of the stiffener foot, the mixedmode strain energy release rates were calculated using the virtual crack closure technique. A failure index was calculated by correlating the results with a mixed-mode failure criterion of the graphite/epoxy material. Computed failure indices were compared to corresponding results where the entire web was modeled with shell elements and only a small section of the stiffener foot and panel were modeled locally with solid elements. Including the stiffener web in the local 3D solid model increased the computed failure index. Further including the noodle and transition radius in the local 3D solid model changed the local distribution across the width. The magnitude of the failure index decreased with increasing transition radius and noodle area. For the transition radii modeled, the material properties used for the noodle area had a negligible effect on the results. The results of this study are intended to be used as a guide for conducting finite element and fracture mechanics analyses of delamination and debonding in complex structures such as integrally stiffened panels.

  8. Technical, perceptual and motor skills in novice-expert water polo players: an individual discriminant analysis for talent development.

    Science.gov (United States)

    DʼErcole, Alessandro A; DʼErcole, Cristina; Gobbi, Massimo; Gobbi, Fabio

    2013-12-01

    The 4 tasks (A, B, C, and Y) have the characteristic of containing one more element than the task performed before it. In fact, task B introduces the slalom which is not present in task A. Task C introduces the ball control that are not present in tasks A and B, whereas task Y introduces the slalom and ball control in a visual dual task situation developed in horizontal swimming over a distance of 20 m at maximum speed. This exercise not included in task C. These tasks were performed by a group of pre-adolescent players and national under 18 water polo players. The novice players showed that tasks B and C are predictors of task Y. Such characteristics were not present in the expert players. The novice players also had difficulty in performing task Y because of the visual-attention overload, a difficulty that was not present in the expert players. To improve the 4 skills, the coach of the novice players developed a technical-didactic program, which was checked 6 months after the pretest. The posttest was not significantly different from the pretest while the individual discriminant analysis identified the improvements in some novice players, which on elaboration proved significant, enabling us to distinguish 2 subgroups, one with higher learning rates and the other with lower learning rates. In the practical applications, we describe the didactic tools (task analysis) and the different levels of development of technical skills in water polo. Improvements in these skills are explained through computational models like the HMOSAIC (Hierarchical, Modular, Selection and Identification for Control) while the individual discriminant analysis enables us to do a longitudinal analysis that is not possible with cross-sectional models.

  9. Causal relationship between trade openness, economic growth and energy consumption: A panel data analysis of Asian countries

    International Nuclear Information System (INIS)

    Nasreen, Samia; Anwar, Sofia

    2014-01-01

    This paper explores the causal relationship between economic growth, trade openness and energy consumption using data of 15 Asian countries. The study covers the period of 1980–2011. We have applied panel cointegration and causality approaches to examine the long-run and causal relationship between variables. Empirical results confirm the presence of cointegration between variables. The impact of economic growth and trade openness on energy consumption is found to be positive. The panel Granger causality analysis reveals the bidirectional causality between economic growth and energy consumption, trade openness and energy consumption. - Highlights: • This study analyzes causality between energy, growth and trade in the Asian region. • Empirical results supported cointegrating relationship between variables. • Positive impact of growth and trade openness on energy usage is found in the long run. • Bidirectional Granger causality is observed between selected variables in the long run

  10. Reduced SNP Panels for Genetic Identification and Introgression Analysis in the Dark Honey Bee (Apis mellifera mellifera)

    DEFF Research Database (Denmark)

    Muñoz, Irene; Henriques, Dora; Johnston, J. Spencer

    2015-01-01

    Beekeeping activities, especially queen trading, have shaped the distribution of honey bee (Apis mellifera) subspecies in Europe, and have resulted in extensive introductions of two eastern European C-lineage subspecies (A. m. ligustica and A. m. carnica) into the native range of the M-lineage A. m....... mellifera subspecies in Western Europe. As a consequence, replacement and gene flow between native and commercial populations have occurred at varying levels across western European populations. Genetic identification and introgression analysis using molecular markers is an important tool for management...... be exploited to create a reduced panel containing the most ancestry-informative markers (AIMs) for those purposes with very little loss of information. The objective of this study was to design reduced panels of AIMs to verify the origin of A. m. mellifera individuals and to provide accurate estimates...

  11. Leveraging Data Analysis for Domain Experts: An Embeddable Framework for Basic Data Science Tasks

    Science.gov (United States)

    Lohrer, Johannes-Y.; Kaltenthaler, Daniel; Kröger, Peer

    2016-01-01

    In this paper, we describe a framework for data analysis that can be embedded into a base application. Since it is important to analyze the data directly inside the application where the data is entered, a tool that allows the scientists to easily work with their data, supports and motivates the execution of further analysis of their data, which…

  12. Clinical genetic testing using a custom-designed steroid-resistant nephrotic syndrome gene panel: analysis and recommendations.

    Science.gov (United States)

    Sen, Ethan S; Dean, Philip; Yarram-Smith, Laura; Bierzynska, Agnieszka; Woodward, Geoff; Buxton, Chris; Dennis, Gemma; Welsh, Gavin I; Williams, Maggie; Saleem, Moin A

    2017-12-01

    There are many single-gene causes of steroid-resistant nephrotic syndrome (SRNS) and the list continues to grow rapidly. Prompt comprehensive diagnostic testing is key to realising the clinical benefits of a genetic diagnosis. This report describes a bespoke-designed, targeted next-generation sequencing (NGS) diagnostic gene panel assay to detect variants in 37 genes including the ability to identify copy number variants (CNVs). This study reports results of 302 patients referred for SRNS diagnostic gene panel analysis. Phenotype and clinical impact data were collected using a standard proforma. Candidate variants detected by NGS were confirmed by Sanger sequencing/Multiplex Ligation-dependent Probe Amplification with subsequent family segregation analysis where possible. Clinical presentation was nephrotic syndrome in 267 patients and suspected Alport syndrome (AS) in 35. NGS panel testing determined a likely genetic cause of disease in 44/220 (20.0%) paediatric and 10/47 (21.3%) adult nephrotic cases, and 17/35 (48.6%) of haematuria/AS patients. Of 71 patients with genetic disease, 32 had novel pathogenic variants without a previous disease association including two with deletions of one or more exons of NPHS1 or NPHS2 . Gene panel testing provides a genetic diagnosis in a significant number of patients presenting with SRNS or suspected AS. It should be undertaken at an early stage of the care pathway and include the ability to detect CNVs as an emerging mechanism for genes associated with this condition. Use of clinical genetic testing after diagnosis of SRNS has the potential to stratify patients and assist decision-making regarding management. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  13. Evidence-based recommendations for the management of ankylosing spondylitis: systematic literature search of the 3E Initiative in Rheumatology involving a broad panel of experts and practising rheumatologists

    DEFF Research Database (Denmark)

    Sidiropoulos, P.I.; Hatemi, G.; Song, I.H.

    2008-01-01

    OBJECTIVE: Recommendations and/or guidelines represent a popular way of integrating evidence-based medicine into clinical practice. The 3E Initiatives is a multi-national effort to develop recommendations for the management of rheumatic diseases, which involves a large number of experts combined...... with practising rheumatologists addressing specific questions relevant to clinical practice. METHODS: Ten countries participated in three rounds of discussions and votes concerning the management of AS. A set of nine questions was formulated in the domains of diagnosis, monitoring and treatment, after a Delphi...... of enthesitis. The compiled agreement among experts ranged from 72% to 93%. CONCLUSION: Recommendations for the management of AS were developed using an evidence-based approach followed by expert/physician consensus with high level of agreement. Involvement of a larger and more representative group...

  14. new developments for control room habitability evaluation and analysis. Panel Discussion

    International Nuclear Information System (INIS)

    Cozens, Kurt O.; Harvey, Robert B. Jr.; Hayes, John J. Jr.; Jarosz, Gregory; Lagus, Peter L.; Taplett, Kenneth J.; Schultz, Stephen P.

    2001-01-01

    In 2000, the Nuclear Energy Institute (NEI), nuclear utilities, and the U.S. Nuclear Regulatory Commission (NRC) embarked on a series of working meetings designed to develop means to assess the post-accident performance of control room ventilation systems to ensure required control room habitability (CRH). Through monthly meeting interactions beginning in January 2000, teams from the industry and the NRC have been working to develop an industry approach for assessment of existing systems. New system evaluation techniques are being developed that will allow for evaluation and/or identification of potential performance improvement options. NRC review of the documentation of this approach, as well as broad industry comment, was performed in the first part of 2001. This session will examine technical development topics covering licensing, analysis, testing, and control room refurbishment. NRC, NEI, utility, vendor, and consultant presentations will be followed by a panel session that will explore both process and technical recommendations for improvements. Since the mid-1980's, the NRC has communicated concerns on the inadequacies of control room designs relating to CRH requirements. In the mid-1990's, testing of some control room envelopes indicated that key assumptions supporting the radiological dose analysis might be incorrect. In 1998, the NRC held a public workshop to address CRH concerns. In late 1999, the NRC and the industry agreed to work together on issues affecting CRH and develop the NEI 99-03 guidance document for resolving those issues. This NEI 99-03 industry document defines a process for licensees to assess a plant's design and licensing bases for CRH to ensure that they are established and maintained throughout the life of the plant. The assessment process describes a comparative approach to determine if the plant configuration and operation are consistent with the CRH licensing basis and analysis. The process includes evaluation, testing, and

  15. Panel 4: Report of the Microbiology Panel.

    Science.gov (United States)

    Barenkamp, Stephen J; Chonmaitree, Tasnee; Hakansson, Anders P; Heikkinen, Terho; King, Samantha; Nokso-Koivisto, Johanna; Novotny, Laura A; Patel, Janak A; Pettigrew, Melinda; Swords, W Edward

    2017-04-01

    Objective To perform a comprehensive review of the literature from July 2011 until June 2015 on the virology and bacteriology of otitis media in children. Data Sources PubMed database of the National Library of Medicine. Review Methods Two subpanels comprising experts in the virology and bacteriology of otitis media were created. Each panel reviewed the relevant literature in the fields of virology and bacteriology and generated draft reviews. These initial reviews were distributed to all panel members prior to meeting together at the Post-symposium Research Conference of the 18th International Symposium on Recent Advances in Otitis Media, National Harbor, Maryland, in June 2015. A final draft was created, circulated, and approved by all panel members. Conclusions Excellent progress has been made in the past 4 years in advancing our understanding of the microbiology of otitis media. Numerous advances were made in basic laboratory studies, in animal models of otitis media, in better understanding the epidemiology of disease, and in clinical practice. Implications for Practice (1) Many viruses cause acute otitis media without bacterial coinfection, and such cases do not require antibiotic treatment. (2) When respiratory syncytial virus, metapneumovirus, and influenza virus peak in the community, practitioners can expect to see an increase in clinical otitis media cases. (3) Biomarkers that predict which children with upper respiratory tract infections will develop otitis media may be available in the future. (4) Compounds that target newly identified bacterial virulence determinants may be available as future treatment options for children with otitis media.

  16. Genotype, phenotype and in silico pathogenicity analysis of HEXB mutations: Panel based sequencing for differential diagnosis of gangliosidosis.

    Science.gov (United States)

    Mahdieh, Nejat; Mikaeeli, Sahar; Tavasoli, Ali Reza; Rezaei, Zahra; Maleki, Majid; Rabbani, Bahareh

    2018-04-01

    Gangliosidosis is an inherited metabolic disorder causing neurodegeneration and motor regression. Preventive diagnosis is the first choice for the affected families due to lack of straightforward therapy. Genetic studies could confirm the diagnosis and help families for carrier screening and prenatal diagnosis. An update of HEXB gene variants concerning genotype, phenotype and in silico analysis are presented. Panel based next generation sequencing and direct sequencing of four cases were performed to confirm the clinical diagnosis and for reproductive planning. Bioinformatic analyses of the HEXB mutation database were also performed. Direct sequencing of HEXA and HEXB genes showed recurrent homozygous variants at c.509G>A (p.Arg170Gln) and c.850C>T (p.Arg284Ter), respectively. A novel variant at c.416T>A (p.Leu139Gln) was identified in the GLB1 gene. Panel based next generation sequencing was performed for an undiagnosed patient which showed a novel mutation at c.1602C>A (p.Cys534Ter) of HEXB gene. Bioinformatic analysis of the HEXB mutation database showed 97% consistency of in silico genotype analysis with the phenotype. Bioinformatic analysis of the novel variants predicted to be disease causing. In silico structural and functional analysis of the novel variants showed structural effect of HEXB and functional effect of GLB1 variants which would provide fast analysis of novel variants. Panel based studies could be performed for overlapping symptomatic patients. Consequently, genetic testing would help affected families for patients' management, carrier detection, and family planning's. Copyright © 2018 Elsevier B.V. All rights reserved.

  17. Nephrus: expert system model in intelligent multilayers for evaluation of urinary system based on scintigraphic image analysis

    International Nuclear Information System (INIS)

    Silva, Jorge Wagner Esteves da; Schirru, Roberto; Boasquevisque, Edson Mendes

    1999-01-01

    Renal function can be measured noninvasively with radionuclides in a extremely safe way compared to other diagnosis techniques. Nevertheless, due to the fact that radioactive materials are used in this procedure, it is necessary to maximize its benefits, therefore all efforts are justifiable in the development of data analysis support tools for this diagnosis modality. The objective of this work is to develop a prototype for a system model based on Artificial Intelligence devices able to perform functions related to cintilographic image analysis of the urinary system. Rules used by medical experts in the analysis of images obtained with 99m Tc+DTPA and /or 99m Tc+DMSA were modeled and a Neural Network diagnosis technique was implemented. Special attention was given for designing programs user-interface. Human Factor Engineering techniques were taking in account allowing friendliness and robustness. The image segmentation adopts a model based on Ideal ROIs, which represent the normal anatomic concept for urinary system organs. Results obtained using Artificial Neural Networks for qualitative image analysis and knowledge model constructed show the feasibility of Artificial Neural Networks for qualitative image analysis and knowledge model constructed show feasibility of Artificial Intelligence implementation that uses inherent abilities of each technique in the medical diagnosis image analysis. (author)

  18. Expert cube development with SQL server analysis services 2012 multidimensional models

    CERN Document Server

    Ferrari, Alberto; Russo, Marco

    2014-01-01

    An easy-to-follow guide full of hands on examples of real-world Analysis Services cube development tasks. Each topic is explained and placed in context, and for the more inquisitive reader, there also more in-depth details of the concepts used.If you are an Analysis Services cube designer wishing to learn more advanced topic and best practices for cube design, this book is for you.You are expected to have some prior experience with Analysis Services cube development.

  19. Superposed strokes analysis by conoscopic holography as an aid for a handwriting expert

    Science.gov (United States)

    Schirripa Spagnolo, Giuseppe; Simonetti, Carla; Cozzella, Lorenzo

    2004-09-01

    For legal purposes there is a requirement for the validation of signatures and handwritten documents. A helpful method in this respect is the so-called superposed strokes analysis, based on the observation of some characteristics in the writing, such as some letters and their dynamics. This paper introduces a promising new technique for superposed strokes analysis based on conoscopic holography. Through a non-contact 3D measure a 3D profile is created of the superposed strokes that allows the writing dynamics to be determined, such as, for example, if a stroke was drawn clockwise or counterclockwise. We propose a 3D analysis by an opto-electronic system, in order to improve the graphology analysis for off-line signature verification.

  20. System Experts and Decision Making Experts in Transdisciplinary Projects

    Science.gov (United States)

    Mieg, Harald A.

    2006-01-01

    Purpose: This paper aims at a better understanding of expert roles in transdisciplinary projects. Thus, the main purpose is the analysis of the roles of experts in transdisciplinary projects. Design/methodology/approach: The analysis of the ETH-UNS case studies from the point of view of the psychology of expertise and the sociology of professions…

  1. Luminance and image quality analysis of an organic electroluminescent panel with a patterned microlens array attachment

    International Nuclear Information System (INIS)

    Lin, Hoang Yan; Chen, Kuan-Yu; Ho, Yu-Hsuan; Fang, Jheng-Hao; Hsu, Sheng-Chih; Lee, Jiun-Haw; Lin, Jia-Rong; Wei, Mao-Kuo

    2010-01-01

    Luminance and image quality observed from the normal direction of a commercial 2.0 inch panel based on organic electroluminescence (OEL) technology attached to regular and patterned microlens array films (MAFs) were studied and analyzed. When applying the regularly arranged MAF on the panel, a luminance enhancement of 23% was observed, accompanied by a reduction of the image quality index as low as 74%. By removing the microlenses on the emitting areas, the patterned MAF enhances the luminance efficiency of the OEL by 52% keeping the image quality index of the display as high as 94%, due to the effective light extraction in the glass substrate being less than the critical angle. 3D simulation based on a ray-tracing model was also established to investigate the spatial distribution of light rays radiated from an OEL pixel with different microstructures which showed consistent results with the experimental results

  2. Relationships between aggression and pubertal increases in testosterone: a panel analysis of adolescent males.

    Science.gov (United States)

    Halpern, C T; Udry, J R; Campbell, B; Suchindran, C

    1993-01-01

    Existing data linking testosterone (T) and aggression in human adult males are surprisingly tenuous. In one of the few studies based on adolescent males, Olweus et al. (1988) demonstrated strong relationships between concurrent measures of T and aggression. However, the conclusions that could be drawn regarding developmental change were limited. Using data from a three-year panel study of 100 adolescent males (ages 12 to 13 at study entry), we examined whether there are significant relationships between concurrently collected measures of T and self-ratings of aggression, and whether the dramatic pubertal rise in T predicts subsequent change in aggression ratings. Panel analyses incorporating concurrent, lagged, and change measures found few significant relationships between aggression and T or pubertal development. The general absence of T/aggression relationships is discussed in the context of other empirical findings, the aggression measures used, and prepubertal differentiation on aggression.

  3. Analysis of a gene panel for targeted sequencing of colorectal cancer samples

    DEFF Research Database (Denmark)

    Jensen, Klaus Højgaard; Izarzugaza, Jose M.G; Sierakowska Juncker, Agnieszka

    2018-01-01

    stratification is necessary for the identification of the subset of patients likely responding to treatment, while sparing others from pernicious treatment. Targeted sequencing approaches may help in this regard, enabling rapid genetic investigation, and at the same time easily applicable in routine diagnosis....... We propose a set of guidelines for the identification, including variant calling and filtering, of somatic mutations driving tumorigenesis in the absence of matched healthy tissue. We also discuss the inclusion criteria for the generation of our gene panel. Furthermore, we evaluate the prognostic...... impact of individual genes, using Cox regression models in the context of overall survival and disease-free survival. These analyses confirmed the role of commonly used biomarkers, and shed light on controversial genes such as CYP2C8. Applying those guidelines, we created a novel gene panel...

  4. Economic Growth, Foreign Direct Investment and CO2 Emissions in China: A Panel Granger Causality Analysis

    Directory of Open Access Journals (Sweden)

    Hongfeng Peng

    2016-03-01

    Full Text Available Using a sample of province-level panel data, this paper investigates the Granger causality associations among economic growth (GDP, foreign direct investment (FDI and CO2 emissions in China. By applying the bootstrap Granger panel causality approach (Kónya, 2006, we consider both cross-sectional dependence and homogeneity of different regions in China. The empirical results support that the causality direction not only works in a single direction either from GDP to FDI (in Yunnan or from FDI to GDP (in Beijing, Neimenggu, Jilin, Shanxi and Gansu, but it also works in both directions (in Henan. Moreover, we document that GDP is Granger-causing CO2 emissions in Neimenggu, Hubei, Guangxi and Gansu while there is bidirectional causality between these two variables in Shanxi. In the end, we identify the unidirectional causality from FDI to CO2 emissions in Beijing, Henan, Guizhou and Shanxi, and the bidirectional causality between FDI and CO2 emissions in Neimenggu.

  5. Thermo-mechanical interaction effects in foam cored sandwich panels-correlation between High-order models and Finite element analysis results

    DEFF Research Database (Denmark)

    Palleti, Hara Naga Krishna Teja; Santiuste, Carlos; Thomsen, Ole Thybo

    2010-01-01

    Thermo-mechanical interaction effects including thermal material degradation in polymer foam cored sandwich structures is investigated using the commercial Finite Element Analysis (FEA) package ABAQUS/Standard. Sandwich panels with different boundary conditions in the form of simply supported...

  6. A retrospective analysis of the effect of discussion in teleconference and face-to-face scientific peer-review panels.

    Science.gov (United States)

    Carpenter, Afton S; Sullivan, Joanne H; Deshmukh, Arati; Glisson, Scott R; Gallo, Stephen A

    2015-09-08

    With the use of teleconferencing for grant peer-review panels increasing, further studies are necessary to determine the efficacy of the teleconference setting compared to the traditional onsite/face-to-face setting. The objective of this analysis was to examine the effects of discussion, namely changes in application scoring premeeting and postdiscussion, in these settings. We also investigated other parameters, including the magnitude of score shifts and application discussion time in face-to-face and teleconference review settings. The investigation involved a retrospective, quantitative analysis of premeeting and postdiscussion scores and discussion times for teleconference and face-to-face review panels. The analysis included 260 and 212 application score data points and 212 and 171 discussion time data points for the face-to-face and teleconference settings, respectively. The effect of discussion was found to be small, on average, in both settings. However, discussion was found to be important for at least 10% of applications, regardless of setting, with these applications moving over a potential funding line in either direction (fundable to unfundable or vice versa). Small differences were uncovered relating to the effect of discussion between settings, including a decrease in the magnitude of the effect in the teleconference panels as compared to face-to-face. Discussion time (despite teleconferences having shorter discussions) was observed to have little influence on the magnitude of the effect of discussion. Additionally, panel discussion was found to often result in a poorer score (as opposed to an improvement) when compared to reviewer premeeting scores. This was true regardless of setting or assigned reviewer type (primary or secondary reviewer). Subtle differences were observed between settings, potentially due to reduced engagement in teleconferences. Overall, further research is required on the psychology of decision-making, team performance and

  7. Bowing of marble panels: On-site damage analysis from the oeconomicum building at Goettingen (Germany)

    Science.gov (United States)

    Koch, A.; Siegesmund, S.

    2003-04-01

    The use of natural stone panels or cladding material for building facades has led to some durability problems, especially with marble slabs. To examine the effects of intrinsic and extrinsic parameters on bowing a very detailed study was performed on the Oeconomicum Building at the University of Goettingen. In total 1556 panels from the whole building were measured with respect to the bowing using a bow-meter. The variation of bowing ranges from concave (up to 23 mm/m) to convex (up to -11 mm/m). The variation is not controlled by the position with respect to the geographical coordinates, height above ground, shadows, temperature etc.. On the north facade the different rock structures visible on the panel surfaces are a result of the marble slabs being cut in different directions. The different degree in bowing is associated with the structure of the marble since all other influencing factors are relatively constant (position, temperature, moisture content, building physics). Experimental data on the expansion behaviour under dry and/or wet conditions reveal a different degree in bowing with respect to the rock fabric and may help to explain the observed differences in bowing. The effect of the rock fabric especially of the lattice preferred orientation in this case clearly controls the deterioration of the marble and the degree of bowing. The bowing is also characterized by an increase in the porosity, decreasing values of ultrasonic wave velocities and flexural strength. The loss of cohesion in the strongly deteriorated panels is clearly visible in the microstructure by the open grain boundaries which are interconnected to intergranular microcracks.

  8. Can FDI promote export diversification and sophistication of host countries? : dynamic panel system GMM analysis

    OpenAIRE

    Iwamoto, Manabu; Nabeshima, Kaoru

    2012-01-01

    Recent trade literature highlights the importance of export diversification and upgrading in fostering faster and sustainable economic growth. This study investigates the impact of FDI inflow and stock on the level of export diversification and sophistication in host country's export baskets. By utilizing the dynamic panel data model, we find that the five-year lagged FDI inflow correlates positively with both export diversification and sophistication, and FDI stock makes the positive contrib...

  9. The Causal Relationship between Corruption and Poverty: A Panel Data Analysis

    OpenAIRE

    Negin, Vahideh; Abd Rashid, Zakariah; Nikopour, Hesam

    2010-01-01

    Most of the studies which have investigated the link between corruption and poverty may draw conclusions on causality in the form of models that only show correlation. This study is set out to investigate the Granger causal relationship between corruption and poverty. It uses dynamic panel system GMM estimators, focuses on capability poverty using human poverty index (HPI) and is based on a sample of 97 developing countries during 1997-2006. The empirical findings reveal that corruption and p...

  10. Unemployment and Salary Formation in the Mexican Manufacturing Industry: A Dynamic Panel Analysis

    OpenAIRE

    Sara G. Castellanos

    2010-01-01

    In this article we study the relationship between wages, unemployment and labor productivity in Mexico’s manufacturing sector. We use the data of Monthly Industrial Survey, produced by the National Institute of Statistics (INEGI), to estimate a model with the generalized method of moments for dynamic panel data of Arellano and Bond (1991). This method exploits the cross time and cross section variability of the industrial sector data, and yields consistent and efficient estimators. Results su...

  11. A panel data analysis of the effects of voluntary and involuntary separations on unit performance in

    OpenAIRE

    Cristina Simón

    2012-01-01

    We studied the relationship between collective involuntary and voluntary turnover over unit-level performance. Our unique dataset, consisting of panel data with 24-month observations for 232 stores of a large Spanish fashion retail company, enabled us to compare different time lags between the moment of departures and the performance measures using fixed effects regressions. Such analyses revealed that both types of turnover had different consequences. Voluntary turnover was unrelated to stor...

  12. Energy Poverty in China: A Dynamic Analysis Based on a Hybrid Panel Data Decision Model

    OpenAIRE

    Bing Wang; Hua-Nan Li; Xiao-Chen Yuan; Zhen-Ming Sun

    2017-01-01

    Renewable energy can help to tackle energy poverty issues of the availability of modern energy services and the sustainability of energy supply. Based on the concept of the Energy Development Index, published by International Energy Agency, this paper builds the clean energy development index and applies the Grey incidence decision method to analyze regional energy poverty issues in China. A model using panel data investigates the influencing factors that are governing energy poverty alleviat...

  13. Nuclear energy-economic growth nexus in OECD countries. A panel data analysis

    International Nuclear Information System (INIS)

    Ozcan, Burcu; Ari, Ayse

    2016-01-01

    The relationship between nuclear energy consumption and economic growth in 13 OECD countries from 1980 to 2012 is analyzed. The panel causality results supported the feedback hypothesis in both the short-run and long-run. There is a positive relationship between nuclear energy consumption and economic growth. As such, nuclear energy consumption and economic growth complement and reinforce each other. Nuclear energy conservation policies may negatively affect economic growth rates.

  14. Supply and demand in physician markets: a panel data analysis of GP services in Australia.

    Science.gov (United States)

    McRae, Ian; Butler, James R G

    2014-09-01

    To understand the trends in any physician services market it is necessary to understand the nature of both supply and demand, but few studies have jointly examined supply and demand in these markets. This study uses aggregate panel data on general practitioner (GP) services at the Statistical Local Area level in Australia spanning eight years to estimate supply and demand equations for GP services. The structural equations of the model are estimated separately using population-weighted fixed effects panel modelling with the two stage least squares formulation of the generalised method of moments approach (GMM (2SLS)). The estimated price elasticity of demand of [Formula: see text] is comparable with other studies. The direct impact of GP density on demand, while significant, proves almost immaterial in the context of near vertical supply curves. Supply changes are therefore due to shifts in the position of the curves, partly determined by a time trend. The model is validated by comparing post-panel model predictions with actual market outcomes over a period of three years and is found to provide surprisingly accurate projections over a period of significant policy change. The study confirms the need to jointly consider supply and demand in exploring the behaviour of physician services markets.

  15. Renewable energy, carbon emissions, and economic growth in 24 Asian countries: evidence from panel cointegration analysis.

    Science.gov (United States)

    Lu, Wen-Cheng

    2017-11-01

    This article aims to investigate the relationship among renewable energy consumption, carbon dioxide (CO 2 ) emissions, and GDP using panel data for 24 Asian countries between 1990 and 2012. Panel cross-sectional dependence tests and unit root test, which considers cross-sectional dependence across countries, are used to ensure that the empirical results are correct. Using the panel cointegration model, the vector error correction model, and the Granger causality test, this paper finds that a long-run equilibrium exists among renewable energy consumption, carbon emission, and GDP. CO 2 emissions have a positive effect on renewable energy consumption in the Philippines, Pakistan, China, Iraq, Yemen, and Saudi Arabia. A 1% increase in GDP will increase renewable energy by 0.64%. Renewable energy is significantly determined by GDP in India, Sri Lanka, the Philippines, Thailand, Turkey, Malaysia, Jordan, United Arab Emirates, Saudi Arabia, and Mongolia. A unidirectional causality runs from GDP to CO 2 emissions, and two bidirectional causal relationships were found between CO 2 emissions and renewable energy consumption and between renewable energy consumption and GDP. The findings can assist governments in curbing pollution from air pollutants, execute energy conservation policy, and reduce unnecessary wastage of energy.

  16. Analysis of a urinary biomarker panel for obstructive nephropathy and clinical outcomes.

    Directory of Open Access Journals (Sweden)

    Yuanyuan Xie

    Full Text Available To follow up renal function changes in patients with obstructive nephropathy and to evaluate the predictive value of biomarker panel in renal prognosis.A total of 108 patients with obstructive nephropathy were enrolled in the study; 90 patients completed the follow-up. At multiple time points before and after obstruction resolution, urinary samples were prospectively collected in patients with obstructive nephropathy; the levels of urinary kidney injury molecule-1 (uKIM-1, liver-type fatty acid-binding protein (uL-FABP, and neutrophil gelatinase associated lipocalin (uNGAL were determined by enzyme-linked immunosorbent assay (ELISA. After 1 year of follow-up, the predictive values of biomarker panel for determining the prognosis of obstructive nephropathy were evaluated.uKIM-1 (r = 0.823, uL-FABP (r = 0.670, and uNGAL (r = 0.720 levels were positively correlated with the serum creatinine level (all P96.69 pg/mg creatinine (Cr, a preoperative uL-FABP>154.62 ng/mg Cr, and a 72-h postoperative uL-FABP>99.86 ng/mg Cr were all positively correlated with poor prognosis (all P<0.01.Biomarker panel may be used as a marker for early screening of patients with obstructive nephropathy and for determining poor prognosis.

  17. Carbon emissions, logistics volume and GDP in China: empirical analysis based on panel data model.

    Science.gov (United States)

    Guo, Xiaopeng; Ren, Dongfang; Shi, Jiaxing

    2016-12-01

    This paper studies the relationship among carbon emissions, GDP, and logistics by using a panel data model and a combination of statistics and econometrics theory. The model is based on the historical data of 10 typical provinces and cities in China during 2005-2014. The model in this paper adds the variability of logistics on the basis of previous studies, and this variable is replaced by the freight turnover of the provinces. Carbon emissions are calculated by using the annual consumption of coal, oil, and natural gas. GDP is the gross domestic product. The results showed that the amount of logistics and GDP have a contribution to carbon emissions and the long-term relationships are different between different cities in China, mainly influenced by the difference among development mode, economic structure, and level of logistic development. After the testing of panel model setting, this paper established a variable coefficient model of the panel. The influence of GDP and logistics on carbon emissions is obtained according to the influence factors among the variables. The paper concludes with main findings and provides recommendations toward rational planning of urban sustainable development and environmental protection for China.

  18. Post-Buckling Analysis of Curved Honeycomb Sandwich Panels Containing Interfacial Disbonds

    Science.gov (United States)

    Pineda, Evan J.; Bednarcyk, Brett A.; Krivanek, Thomas K.

    2016-01-01

    A numerical study on the effect of facesheet-core disbonds on the post-buckling response of curved honeycomb sandwich panels is presented herein. This work was conducted as part of the development of a damage tolerance plan for the next-generation Space Launch System heavy lift launch vehicle payload fairing. As such, the study utilized full-scale fairing barrel segments as the structure of interest. The panels were composed of carbon fiber reinforced polymer facesheets and aluminum honeycomb core. The panels were analyzed numerically using the finite element method incorporating geometric nonlinearity. In a predetermined circular region, facesheet and core nodes were detached to simulate a disbond, between the outer mold line facesheet and honeycomb core, induced via low-speed impact. Surface-to-surface contact in the disbonded region was invoked to prevent interpenetration of the facesheet and core elements and obtain realistic stresses in the core. The diameter of this disbonded region was varied and the effect of the size of the disbond on the post-buckling response was observed. Significant changes in the slope of the edge load-deflection response were used to determine the onset of global buckling and corresponding buckling load. Finally, several studies were conducted to determine the sensitivity of the numerical predictions to refinement in the finite element mesh.

  19. The effects of exchange rate volatility on international trade fl ows: evidence from panel data analysis and fuzzy approach

    Directory of Open Access Journals (Sweden)

    Robert M. Kunst

    2012-06-01

    Full Text Available The aim of this paper is to analyze the effects of exchange rate volatility on international trade flows by using two different approaches, the panel data analysis and fuzzy logic, and to compare the results. To a panel with the crosssection dimension of 91 pairs of EU15 countries and with time ranging from 1964 to 2003, an extended gravity model of trade is applied in order to determine theeffects of exchange rate volatility on bilateral trade flows of EU15 countries. The estimated impact is clearly negative, which indicates that exchange rate volatility has a negative influence on bilateral trade flows. Then, this traditional panel approach is contrasted with an alternative investigation based on fuzzy logic. The key elements of the fuzzy approach are to set fuzzy decision rules and to assignmembership functions to the fuzzy sets intuitively based on experience. Both approaches yield very similar results and fuzzy approach is recommended to be used as a complement to statistical methods.

  20. NGS panel analysis in 24 ectopia lentis patients; a clinically relevant test with a high diagnostic yield.

    Science.gov (United States)

    Overwater, E; Floor, K; van Beek, D; de Boer, K; van Dijk, T; Hilhorst-Hofstee, Y; Hoogeboom, A J M; van Kaam, K J; van de Kamp, J M; Kempers, M; Krapels, I P C; Kroes, H Y; Loeys, B; Salemink, S; Stumpel, C T R M; Verhoeven, V J M; Wijnands-van den Berg, E; Cobben, J M; van Tintelen, J P; Weiss, M M; Houweling, A C; Maugeri, A

    2017-09-01

    Several genetic causes of ectopia lentis (EL), with or without systemic features, are known. The differentiation between syndromic and isolated EL is crucial for further treatment, surveillance and counseling of patients and their relatives. Next generation sequencing (NGS) is a powerful tool enabling the simultaneous, highly-sensitive analysis of multiple target genes. The aim of this study was to evaluate the diagnostic yield of our NGS panel in EL patients. Furthermore, we provide an overview of currently described mutations in ADAMTSL4, the main gene involved in isolated EL. A NGS gene panel was analysed in 24 patients with EL. A genetic diagnosis was confirmed in 16 patients (67%). Of these, four (25%) had a heterozygous FBN1 mutation, 12 (75%) were homozygous or compound heterozygous for ADAMTSL4 mutations. The known European ADAMTSL4 founder mutation c.767_786del was most frequently detected. The diagnostic yield of our NGS panel was high. Causative mutations were exclusively identified in ADAMTSL4 and FBN1. With this approach the risk of misdiagnosis or delayed diagnosis can be reduced. The value and clinical implications of establishing a genetic diagnosis in patients with EL is corroborated by the description of two patients with an unexpected underlying genetic condition. Copyright © 2017 Elsevier Masson SAS. All rights reserved.

  1. A prototype expert system to support the development of a fault-tree analysis software for nuclear reactor safety

    International Nuclear Information System (INIS)

    Mesko, L.

    1990-01-01

    The project called EMERIS is designed to provide a material testing nuclear reactor and experimental loops with a software for the 'acquisition, evaluation and archivation of measured data during the operation of the experimental facility'. The project which gives job a team has a duration of two years and involves three Vax compatible TPA-type computers and many smaller computers for data digitalization and graphical workstations. The detailed description of the project is not the task of the paper. One of its modules, however, plays an important role in the considerations. Namely the module for distrubance analysis (DA) which is planned to perform a rule based on-line evaluation of numerous predefined fault trees in an expert system like environment

  2. Nuclear expert web mining system: monitoring and analysis of nuclear acceptance by information retrieval and opinion extraction on the Internet

    Energy Technology Data Exchange (ETDEWEB)

    Reis, Thiago; Barroso, Antonio C.O.; Imakuma, Kengo, E-mail: thiagoreis@usp.b, E-mail: barroso@ipen.b, E-mail: kimakuma@ipen.b [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2011-07-01

    This paper presents a research initiative that aims to collect nuclear related information and to analyze opinionated texts by mining the hypertextual data environment and social networks web sites on the Internet. Different from previous approaches that employed traditional statistical techniques, it is being proposed a novel Web Mining approach, built using the concept of Expert Systems, for massive and autonomous data collection and analysis. The initial step has been accomplished, resulting in a framework design that is able to gradually encompass a set of evolving techniques, methods, and theories in such a way that this work will build a platform upon which new researches can be performed more easily by just substituting modules or plugging in new ones. Upon completion it is expected that this research will contribute to the understanding of the population views on nuclear technology and its acceptance. (author)

  3. Nuclear expert web mining system: monitoring and analysis of nuclear acceptance by information retrieval and opinion extraction on the Internet

    International Nuclear Information System (INIS)

    Reis, Thiago; Barroso, Antonio C.O.; Imakuma, Kengo

    2011-01-01

    This paper presents a research initiative that aims to collect nuclear related information and to analyze opinionated texts by mining the hypertextual data environment and social networks web sites on the Internet. Different from previous approaches that employed traditional statistical techniques, it is being proposed a novel Web Mining approach, built using the concept of Expert Systems, for massive and autonomous data collection and analysis. The initial step has been accomplished, resulting in a framework design that is able to gradually encompass a set of evolving techniques, methods, and theories in such a way that this work will build a platform upon which new researches can be performed more easily by just substituting modules or plugging in new ones. Upon completion it is expected that this research will contribute to the understanding of the population views on nuclear technology and its acceptance. (author)

  4. Reduced SNP panels for genetic identification and introgression analysis in the dark honey bee (Apis mellifera mellifera.

    Directory of Open Access Journals (Sweden)

    Irene Muñoz

    Full Text Available Beekeeping activities, especially queen trading, have shaped the distribution of honey bee (Apis mellifera subspecies in Europe, and have resulted in extensive introductions of two eastern European C-lineage subspecies (A. m. ligustica and A. m. carnica into the native range of the M-lineage A. m. mellifera subspecies in Western Europe. As a consequence, replacement and gene flow between native and commercial populations have occurred at varying levels across western European populations. Genetic identification and introgression analysis using molecular markers is an important tool for management and conservation of honey bee subspecies. Previous studies have monitored introgression by using microsatellite, PCR-RFLP markers and most recently, high density assays using single nucleotide polymorphism (SNP markers. While the latter are almost prohibitively expensive, the information gained to date can be exploited to create a reduced panel containing the most ancestry-informative markers (AIMs for those purposes with very little loss of information. The objective of this study was to design reduced panels of AIMs to verify the origin of A. m. mellifera individuals and to provide accurate estimates of the level of C-lineage introgression into their genome. The discriminant power of the SNPs using a variety of metrics and approaches including the Weir & Cockerham's FST, an FST-based outlier test, Delta, informativeness (In, and PCA was evaluated. This study shows that reduced AIMs panels assign individuals to the correct origin and calculates the admixture level with a high degree of accuracy. These panels provide an essential tool in Europe for genetic stock identification and estimation of admixture levels which can assist management strategies and monitor honey bee conservation programs.

  5. Different effects of meteorological factors on hand, foot and mouth disease in various climates: a spatial panel data model analysis.

    Science.gov (United States)

    Wang, Chao; Cao, Kai; Zhang, Yingjie; Fang, Liqun; Li, Xia; Xu, Qin; Huang, Fangfang; Tao, Lixin; Guo, Jin; Gao, Qi; Guo, Xiuhua

    2016-05-26

    Major outbreaks of hand, foot and mouth disease (HFMD) have been reported in China since 2008, posing a great threat to the health of children. Although many studies have examined the effect of meteorological variables on the incidence of HFMD, the results have been inconsistent. This study aimed to quantify the relationship between meteorological factors and HFMD occurrence in different climates of mainland China using spatial panel data models. All statistical analyses were carried out according to different climate types. We firstly conducted a descriptive analysis to summarize the epidemic characteristics of HFMD from May 2008 to November 2012 and then detected the spatial autocorrelation of HFMD using a global autocorrelation statistic (Moran's I) in each month. Finally, the association between HFMD incidence and meteorological factors was explored by spatial panel data models. The 353 regions were divided into 4 groups according to climate (G1: subtropical monsoon climate; G2: temperate monsoon climate; G3: temperate continental climate; G4: plateau mountain climate). The Moran's I values were significant with high correlations in most months of group G1 and G2 and some months of group G3 and G4. This suggested the existence of a high spatial autocorrelation with HFMD. Spatial panel data models were more appropriate to describe the data than fixed effect models. The results showed that HFMD incidences were significantly associated with average atmospheric pressure (AAP), average temperature (AT), average vapor pressure (AVP), average relative humidity (ARH), monthly precipitation (MP), average wind speed (AWS), monthly total sunshine hours (MSH), mean temperature difference (MTD), rain day (RD) and average temperature distance (ATD), but the effect of meteorological factors might differ in various climate types. Spatial panel data models are useful and effective when longitudinal data are available and spatial autocorrelation exists. Our findings showed that

  6. Addressing Palliative Sedation during Expert Consultation: A Descriptive Analysis of the Practice of Dutch Palliative Care Consultation Teams.

    Directory of Open Access Journals (Sweden)

    Patrick Hoek

    Full Text Available Since palliative sedation is considered a complex intervention, consultation teams are increasingly established to support general practice. This study aims to offer insight into the frequency and characteristics of expert consultations regarding palliative sedation.We performed a retrospective analysis of a longitudinal database. This database contained all patient-related consultations by Dutch Palliative Care Consultation teams, that were requested between 2004 and 2011. We described the frequency and characteristics of these consultations, in particular of the subgroup of consultations in which palliative sedation was addressed (i.e. PSa consultations. We used multivariate regression analysis to explore consultation characteristics associated with a higher likelihood of PSa consultations.Of the 44,443 initial consultations, most were requested by general practitioners (73% and most concerned patients with cancer (86%. Palliative sedation was addressed in 18.1% of all consultations. Palliative sedation was relatively more often discussed during consultations for patients with a neurologic disease (OR 1.79; 95% CI: 1.51-2.12 or COPD (OR 1.39; 95% CI: 1.15-1.69 than for patients with cancer. We observed a higher likelihood of PSa consultations if the following topics were also addressed during consultation: dyspnoea (OR 1.30; 95% CI: 1.22-1.40, agitation/delirium (OR 1.57; 95% CI: 1.47-1.68, exhaustion (OR 2.89; 95% CI: 2.61-3.20, euthanasia-related questions (OR 2.65; 95% CI: 2.37-2.96 or existential issues (OR 1.55; 95% CI: 1.31-1.83.In conclusion, PSa consultations accounted for almost one-fifth of all expert consultations and were associated with several case-related characteristics. These characteristics may help clinicians in identifying patients at risk for a more complex disease trajectory at the end of life.

  7. Proceedings of the exploratory meeting of experts to define an action plan on best estimate calculations and uncertainty analysis

    International Nuclear Information System (INIS)

    2002-01-01

    The purpose of the meeting was to develop an Action Plan on Best Estimate calculations and uncertainty analysis. This would require to better identify the needs for additional investigations in this field, with a view to reaching technical consensus on understanding and methodologies, and to making progress in the Best Estimate analysis of Design Basis Accidents and Severe Accidents. The meeting was open to organisations interested in participating in the definition of this programme. The following approach had been suggested: - With respect to methodologies already used in safety analysis: - Identify weak points (difficulties regarding implementation, justification of basic assumptions, etc.); this task would require the participation of experts having experience in safety analyses. - Identify questions of general interest (weak points not too specific to a particular methodology). - Perform an inventory and analysis of actions underway to solve the problems. - Propose complementary or supporting actions to make progress together. - With respect to methodologies not yet used in safety analysis: - Identify the issues to be solved, in order to convince end users to make use of the methodology. - Perform an inventory and analysis of actions underway to solve the problems. - Evaluate how much time could be necessary to solve the problem (short term, medium term, long term). - Propose actions to make common progress on the most promising alternative methods. The following actions could be considered, among others: - Examine methodologies used in other fields (weather forecast, etc.). - Develop tools and methods (quantification of basic uncertainties, treatment, etc.) - Develop/improve the validation methodology of uncertainty evaluation methods. - Define a consistent programme of computational benchmark exercises (based on SET and/or IET and/or reactor scenarios) associated to the specification of clear procedures allowing an actual evaluation and comparison of the

  8. Numerical Algorithms for the Analysis of Expert Opinions Elicited in Text Format

    Science.gov (United States)

    2013-04-01

    Sentiment scores are widely used in opinion mining, see 28 UNCLASSIFIED UNCLASSIFIED DSTO–TR–2797 for example the well known resource SentiWordNet at...the URL http:// sentiwordnet . isti.cnr.it. The (several generations) history and details of SentiWordNet are discussed in the articles [ES06] & [BES10...Fabrizio Sebastiani, SentiWordNet 3.0: An enhanced lexical resource for sentiment analysis and opinion mining, Pro- ceedings of the Seventh conference

  9. Rna-seq data analysis in prokaryotes: a review for non-experts

    OpenAIRE

    Rodríguez Cubillos, Andrés Eduardo; Perlaza-Jiménez, Laura; Bernal Giraldo, Adriana Jimena

    2014-01-01

    ABSTRACTRNA-Seq is nowadays the method of choice for the sequencing of transcripts and transcriptomes in the field of molecular biology and gene expression assays. Until recently, this technique has allowed for the sequencing of RNA transcripts in an unprecedented scale and depth never reached in previous years; nevertheless, the reach and validity of the conclusions generated will depend strictly on an adequate experimental design and a robust analysis of the data. Given the inherent differe...

  10. Neural network expert system for X-ray analysis of welded joints

    Science.gov (United States)

    Kozlov, V. V.; Lapik, N. V.; Popova, N. V.

    2018-03-01

    The use of intelligent technologies for the automated analysis of product quality is one of the main trends in modern machine building. At the same time, rapid development in various spheres of human activity is experienced by methods associated with the use of artificial neural networks, as the basis for building automated intelligent diagnostic systems. Technologies of machine vision allow one to effectively detect the presence of certain regularities in the analyzed designation, including defects of welded joints according to radiography data.

  11. Panel Session

    DEFF Research Database (Denmark)

    Bertelsen, Olav Wedege

    2004-01-01

    In this panel session, four researchers will discuss the role of a theoretical foundation, in particular AT, in the design of information technology based artefacts. The general discussion will take of from a specific examination of the ActAD approach.......In this panel session, four researchers will discuss the role of a theoretical foundation, in particular AT, in the design of information technology based artefacts. The general discussion will take of from a specific examination of the ActAD approach....

  12. Experience with citizens panels

    International Nuclear Information System (INIS)

    Selwyn, J.

    2002-01-01

    In May 1999, 200 delegates attended a four-day UK Consensus Conference on radioactive waste management, which was organised by the UK Centre for Economic and Environmental Development (UK CEED) and supported by the government, industry and environmental groups. The event brought together a Citizens' Panel of fifteen people, randomly selected to represent a cross section of the British public, together with the major players in the debate. The four-day conference saw the panel cross-examine expert witnesses from organisations such as NIREX, British Nuclear Fuels Limited, the Ministry of Defence, Greenpeace and Friends of the Earth. The findings of their investigations were put together in a report containing detailed recommendations for government and industry and presented to the Minister on the final day. (author)

  13. RNA-Seq Data Analysis in Prokaryotes: A Review for Non-experts

    OpenAIRE

    Andrés Eduardo Rodríguez Cubillos; Laura Perlaza-Jiménez; Adriana Jimena Bernal Giraldo

    2014-01-01

    ABSTRACT RNA-Seq is nowadays the method of choice for the sequencing of transcripts and transcriptomes in the field of molecular biology and gene expression assays. Until recently, this technique has allowed for the sequencing of RNA transcripts in an unprecedented scale and depth never reached in previous years; nevertheless, the reach and validity of the conclusions generated will depend strictly on an adequate experimental design and a robust analysis of the data. Given the inherent dif...

  14. 2011 Biomass Program Platform Peer Review: Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Haq, Zia [Office of Energy Efficiency and Renewable Energy (EERE), Washington, DC (United States)

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Program’s Analysis Platform Review meeting.

  15. Integrated disturbance analysis (IDA): A basis for expert systems in nuclear power plants

    International Nuclear Information System (INIS)

    Bastl, W.

    1987-01-01

    In the framework of a project sponsored by the Bundesminister fur Forschung und Technologie (BMFT) and the Rheinisch-Westfalisches Elektrizitatswerk AG (RWE) the concept of Integrated Disturbance Analysis (IDA) has been developed and applied to the Biblis Unit B Nuclear Power Plant. Rather than using the classical approach, which aims at finding the cause of a plant disturbance, the main goal was to make transparent to the operator what it really means for the process, when a set of parameters begins to deviate from its normal state. Therefore the goal was to help the operator to combine the information on the individual process parameters to the complete picture of the evolving transient, thus facilitating the decision about the importance of a disturbance for operational safety. Considering this goal the most important subjects taken care of were: to extend event sequence analysis by means of analog information; to provide adequate modelling of time dependent processes and feedback loops; to integrate IDA information effectively into the existing control room environment

  16. Analysis, Simulation, and Verification of Knowledge-Based, Rule-Based, and Expert Systems

    Science.gov (United States)

    Hinchey, Mike; Rash, James; Erickson, John; Gracanin, Denis; Rouff, Chris

    2010-01-01

    Mathematically sound techniques are used to view a knowledge-based system (KBS) as a set of processes executing in parallel and being enabled in response to specific rules being fired. The set of processes can be manipulated, examined, analyzed, and used in a simulation. The tool that embodies this technology may warn developers of errors in their rules, but may also highlight rules (or sets of rules) in the system that are underspecified (or overspecified) and need to be corrected for the KBS to operate as intended. The rules embodied in a KBS specify the allowed situations, events, and/or results of the system they describe. In that sense, they provide a very abstract specification of a system. The system is implemented through the combination of the system specification together with an appropriate inference engine, independent of the algorithm used in that inference engine. Viewing the rule base as a major component of the specification, and choosing an appropriate specification notation to represent it, reveals how additional power can be derived from an approach to the knowledge-base system that involves analysis, simulation, and verification. This innovative approach requires no special knowledge of the rules, and allows a general approach where standardized analysis, verification, simulation, and model checking techniques can be applied to the KBS.

  17. Testosterone and pubertal development as predictors of sexual activity: a panel analysis of adolescent males.

    Science.gov (United States)

    Halpern, C T; Udry, J R; Campbell, B; Suchindran, C

    1993-01-01

    Strong cross-sectional relationships between testosterone (T) and sexual activity have been found for human adolescent males, even when level of pubertal development is controlled; however, it has not been demonstrated that sexual behavior increases over time as a consequence of hormonal changes. The purpose of this paper was to extend previous cross-sectional findings by demonstrating that sexual behavior is initiated and increases within individuals over time as a direct function of changes in T levels, rather than indirectly through pubertal development. Analyses are based on a 3-year panel study of about 100 7th- and 8th-grade adolescent boys. Pubertal development and changes in pubertal development were significantly and positively related to changes in sexual ideation, noncoital behavior, and to the transition to sexual intercourse. Testosterone levels at study entry were significantly related to coital status at Time 1 and also predicted the transition to nonvirgin status. However, changes in hormone levels during the 3 years of study participation did not predict changes in ideation or noncoital sexual activity, regardless of the period of change or the lag time to effects. The panel data suggest, in contrast to earlier cross-sectional results, that change in pubertal development is related to the initiation of sexual activity because of its social stimulus value, and not solely because it is determined by, or is a proxy for, changing hormone levels. Possible causes of the different findings in the cross-sectional and panel data are examined, and the implications and meaning of hormone/behavior relationships based on single measures are discussed.

  18. Enculturation into Technoscience: Analysis of the Views of Novices and Experts on Modelling and Learning in Nanophysics

    Science.gov (United States)

    Tala, Suvi

    2011-07-01

    In physics, the borderline between pure science and technology is increasingly diffuse. Physics can be seen as technoscience, a merged scientific and technological enterprise. The notion of technoscience has emerged from studies in the philosophy of science and sociology of science, and also seems to arise quite naturally in discussions with practicing scientists and as an underpinning of actual scientific practices. Nanophysics, the activities of which are closely connected with the advancement of technology and where modelling and simulations are extensively used, is a natural place to test how the ideas contained in technoscience can be used to understand these central activities and how they are learned. The views of physicists, both experts and novices, working on modelling and simulation problems in nanophysics and nanotechnology are examined in this study using multidimensional methods, to discover their views on how knowledge in their research field is acquired, constructed and justified—and how novices are enculturated into these knowledge-construction processes. Additionally, attention is paid to the question of the skills that are needed and how these skills, alongside the views of modelling, develop as a novice becomes an expert. The need to understand these basic epistemological processes is quite apparent from the viewpoint of understanding science, as well as in terms of using this understanding to guide education. The results of the analysis strongly suggest that ideas characterising technoscience are also present in the practitioners' views; the technoscientific view can thus be used to understand and support the poorly understood process in which novices are enculturated as researchers in the field.

  19. Panel Discussion: New Directions in Human Reliability Analysis for Oil & Gas, Cybersecurity, Nuclear, and Aviation

    Energy Technology Data Exchange (ETDEWEB)

    Harold S. Blackman; Ronald Boring; Julie L. Marble; Ali Mosleh; Najmedin Meshkati

    2014-10-01

    This panel will discuss what new directions are necessary to maximize the usefulness of HRA techniques across different areas of application. HRA has long been a part of Probabilistic Risk Assessment in the nuclear industry as it offers a superior standard for risk-based decision-making. These techniques are continuing to be adopted by other industries including oil & gas, cybersecurity, nuclear, and aviation. Each participant will present his or her ideas concerning industry needs followed by a discussion about what research is needed and the necessity to achieve cross industry collaboration.

  20. The business innovation in perspective. An analysis of data panel; La innovacion empresarial en perspectiva. Un analisis de datos de panel

    Energy Technology Data Exchange (ETDEWEB)

    Plaza Llorente, J. M.

    2012-07-01

    This paper shows a case of entrepreneurial innovation based in the study of data panel. A first research of the innovative behaviour of 325 small and middle size companies (SME) was conducted in 2003 using data poll raised in 1995. After fifteen years, in 2010, the basic data of the companies had been updated using Google as source of statistical primary information. A conclusion of the research in 2003 was the definition of four patterns of behaviour to the way in the Spanish innovative SMEs address innovation (Guepard, Rhino, Zebra and Log) and the particular performance of the innovation skills in each one of the four categories. In 2010, a 13.5% of the panel companies had been disappeared because corporative movements (mergers or acquisitions) fails or bankruptcy. On the other hand, a 8% of the panel firms had been improved their position (going through Log or Zebra to Rhino) in the period 1995-2010. The main reasons of this change obey to a better performance of their innovation capabilities together sound organizational and marketing strategies (market oriented products and services and differentiation). (Author)

  1. Energy efficiency policies for space heating in EU countries: A panel data analysis for the period 1990–2010

    International Nuclear Information System (INIS)

    Ó Broin, Eoin; Nässén, Jonas; Johnsson, Filip

    2015-01-01

    Highlights: • Space heating demand between 1990 and 2010 modelled using a panel of 14 EU countries. • The impacts of 260 efficiency polices affecting space heating demand are examined. • Regulatory policies found to have had a greater success than financial or informative. • High priority should be given to regulatory policies for space heating energy goals. - Abstract: We present an empirical analysis of the more than 250 space heating-focused energy efficiency policies that have been in force at the EU and national levels in the period 1990–2010. This analysis looks at the EU-14 residential sector (Pre-2004 EU-15, excluding Luxembourg) using a panel data regression analysis on unit consumption of energy for space heating (kWh/m 2 /year). The policies are represented as a regression variable using a semi-quantitative impact estimation obtained from the MURE Policy Database. The impacts of the policies as a whole, and subdivided into financial, regulatory, and informative policies, are examined. The correlation between the actual reductions in demand and the estimated impact of regulatory policies is found to be stronger than the corresponding correlations with the respective impacts of financial policies and informative polices. Together with the well-known market barriers to energy efficiency that exist in the residential sector, these findings suggest that regulatory policy measures be given a high priority in the design of an effective pathway towards the EU-wide goals for space heating energy

  2. Dictionaries and distributions: Combining expert knowledge and large scale textual data content analysis : Distributed dictionary representation.

    Science.gov (United States)

    Garten, Justin; Hoover, Joe; Johnson, Kate M; Boghrati, Reihane; Iskiwitch, Carol; Dehghani, Morteza

    2018-02-01

    Theory-driven text analysis has made extensive use of psychological concept dictionaries, leading to a wide range of important results. These dictionaries have generally been applied through word count methods which have proven to be both simple and effective. In this paper, we introduce Distributed Dictionary Representations (DDR), a method that applies psychological dictionaries using semantic similarity rather than word counts. This allows for the measurement of the similarity between dictionaries and spans of text ranging from complete documents to individual words. We show how DDR enables dictionary authors to place greater emphasis on construct validity without sacrificing linguistic coverage. We further demonstrate the benefits of DDR on two real-world tasks and finally conduct an extensive study of the interaction between dictionary size and task performance. These studies allow us to examine how DDR and word count methods complement one another as tools for applying concept dictionaries and where each is best applied. Finally, we provide references to tools and resources to make this method both available and accessible to a broad psychological audience.

  3. Politics and its intersection with coverage with evidence development: a qualitative analysis from expert interviews.

    Science.gov (United States)

    Bishop, Danielle; Lexchin, Joel

    2013-03-09

    Pressures on health care budgets have led policy makers to discuss how to balance the provision of costly technologies to populations in need and making coverage decisions under uncertainty. Coverage with evidence development (CED) is being employed to meet these challenges. Twenty-four interviews were carried out between June 2009 and December 2010 with researchers, decision makers and policy makers from Australia, Canada, United Kingdom and United States. Three phases of coding occurred, the first being manual coding where the interviews were read and notes were taken and nodes were extracted and imputed. NVIVO coding was applied to the interview transcripts, with both broad general searches for word usages and imputed nodes. Four overarching thematic areas emerged out of contextual analysis of the interviews - (1) what constitutes CED; (2) the lack of a systematic approach/governance structure; (3) the role of the pharmaceutical industry and overt political considerations in CED; and (4) alternatives and barriers to CED. We explore these themes and then use concrete examples of CED projects in each of the four countries to illustrate the political issues that our interviewees raised. Until the underlying political nature of CED is recognized then fundamental questions about its usefulness and operation will remain unresolved.

  4. Spatiotemporal Characteristics, Determinants and Scenario Analysis of CO2 Emissions in China Using Provincial Panel Data

    Science.gov (United States)

    Wang, Shaojian

    2015-01-01

    This paper empirically investigated the spatiotemporal variations, influencing factors and future emission trends of China’s CO2 emissions based on a provincial panel data set. A series of panel econometric models were used taking the period 1995–2011 into consideration. The results indicated that CO2 emissions in China increased over time, and were characterized by noticeable regional discrepancies; in addition, CO2 emissions also exhibited properties of spatial dependence and convergence. Factors such as population scale, economic level and urbanization level exerted a positive influence on CO2 emissions. Conversely, energy intensity was identified as having a negative influence on CO2 emissions. In addition, the significance of the relationship between CO2 emissions and the four variables varied across the provinces based on their scale of economic development. Scenario simulations further showed that the scenario of middle economic growth, middle population increase, low urbanization growth, and high technology improvement (here referred to as Scenario BTU), constitutes the best development model for China to realize the future sustainable development. Based on these empirical findings, we also provide a number of policy recommendations with respect to the future mitigation of CO2 emissions. PMID:26397373

  5. A dynamic analysis of motorcycle ownership and usage: a panel data modeling approach.

    Science.gov (United States)

    Wen, Chieh-Hua; Chiou, Yu-Chiun; Huang, Wan-Ling

    2012-11-01

    This study aims to develop motorcycle ownership and usage models with consideration of the state dependence and heterogeneity effects based on a large-scale questionnaire panel survey on vehicle owners. To account for the independence among alternatives and heterogeneity among individuals, the modeling structure of motorcycle ownership adopts disaggregate choice models considering the multinomial, nested, and mixed logit formulations. Three types of panel data regression models--ordinary, fixed, and random effects--are developed and compared for motorcycle usage. The estimation results show that motorcycle ownership in the previous year does exercise a significantly positive effect on the number of motorcycles owned by households in the current year, suggesting that the state dependence effect does exist in motorcycle ownership decisions. In addition, the fixed effects model is the preferred specification for modeling motorcycle usage, indicating strong evidence for existence of heterogeneity. Among various management strategies evaluated under different scenarios, increasing gas prices and parking fees will lead to larger reductions in total kilometers traveled. Copyright © 2011 Elsevier Ltd. All rights reserved.

  6. Determinants of Export Services of USA with its Asian Partners: A Panel Data Analysis

    Directory of Open Access Journals (Sweden)

    Sandeep KAUR

    2011-11-01

    Full Text Available Trade in services has accounted for 20 per cent of global trade. Despite the increasing importance of services trade in global economy, there has been limited research on service trade which uses determinants driving such trade. The present paper has examined the export potential in service sector of USA with its Asian trade partners (Japan, China, India, Singapore, South Korea and Hong Kong by taking into account geographic, economic and other features. The approach is based on gravity model, widely used to analyze trade in goods and has more recently been applied to service sector. Being a nature of study is of panel data i.e. for 9 years (2000-2008 and six cross sections, the study used panel data methodology. The study revealed that USA has export potential in services for India and Japan. Regarding the convergent and divergent economies, USA had convergence in exports with three Asian countries (Hong Kong, India and Korea and divergence with three Asian countries (Japan, China and Singapore. There is a large scope for export expansion for Hong Kong, India and Korea.

  7. Online-Expert: An Expert System for Online Database Selection.

    Science.gov (United States)

    Zahir, Sajjad; Chang, Chew Lik

    1992-01-01

    Describes the design and development of a prototype expert system called ONLINE-EXPERT that helps users select online databases and vendors that meet users' needs. Search strategies are discussed; knowledge acquisition and knowledge bases are described; and the Analytic Hierarchy Process (AHP), a decision analysis technique that ranks databases,…

  8. Uses of Activation Analysis in Studies of Mineral Element Metabolism in Man. Papers Given at a Panel Meeting

    International Nuclear Information System (INIS)

    1970-01-01

    In June, 1968, the International Atomic Energy Agency held a panel meeting in Teheran, Iran, to discuss some of the uses of activation analysis in studies of mineral element metabolism in man. The aims of the meeting were to identify and draw attention to specific medical problems to which activation analysis could be fruitfully applied, to review the capabilities of the technique itself, and to recommend specific action which the Agency might take to support further work in this field. The scientific papers presented at the meeting have been gathered together in this report, and it is hoped that their publication will be of interest to all concerned with mineral element metabolism in man, whether studied by activation analysis or by other methods

  9. Expert Consensus Contouring Guidelines for Intensity Modulated Radiation Therapy in Esophageal and Gastroesophageal Junction Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Abraham J., E-mail: wua@mskcc.org [Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Bosch, Walter R. [Washington University, St. Louis, Missouri (United States); Chang, Daniel T. [Stanford Cancer Institute, Stanford, California (United States); Hong, Theodore S. [Massachusetts General Hospital, Boston, Massachusetts (United States); Jabbour, Salma K. [Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey (United States); Kleinberg, Lawrence R. [Johns Hopkins Medical Center, Baltimore, Maryland (United States); Mamon, Harvey J. [Brigham and Women' s Hospital, Boston, Massachusetts (United States); Thomas, Charles R. [Knight Cancer Institute, Oregon Health & Sciences University, Portland, Oregon (United States); Goodman, Karyn A. [Memorial Sloan-Kettering Cancer Center, New York, New York (United States)

    2015-07-15

    Purpose/Objective(s): Current guidelines for esophageal cancer contouring are derived from traditional 2-dimensional fields based on bony landmarks, and they do not provide sufficient anatomic detail to ensure consistent contouring for more conformal radiation therapy techniques such as intensity modulated radiation therapy (IMRT). Therefore, we convened an expert panel with the specific aim to derive contouring guidelines and generate an atlas for the clinical target volume (CTV) in esophageal or gastroesophageal junction (GEJ) cancer. Methods and Materials: Eight expert academically based gastrointestinal radiation oncologists participated. Three sample cases were chosen: a GEJ cancer, a distal esophageal cancer, and a mid-upper esophageal cancer. Uniform computed tomographic (CT) simulation datasets and accompanying diagnostic positron emission tomographic/CT images were distributed to each expert, and the expert was instructed to generate gross tumor volume (GTV) and CTV contours for each case. All contours were aggregated and subjected to quantitative analysis to assess the degree of concordance between experts and to generate draft consensus contours. The panel then refined these contours to generate the contouring atlas. Results: The κ statistics indicated substantial agreement between panelists for each of the 3 test cases. A consensus CTV atlas was generated for the 3 test cases, each representing common anatomic presentations of esophageal cancer. The panel agreed on guidelines and principles to facilitate the generalizability of the atlas to individual cases. Conclusions: This expert panel successfully reached agreement on contouring guidelines for esophageal and GEJ IMRT and generated a reference CTV atlas. This atlas will serve as a reference for IMRT contours for clinical practice and prospective trial design. Subsequent patterns of failure analyses of clinical datasets using these guidelines may require modification in the future.

  10. Expert system in PNC, 5

    International Nuclear Information System (INIS)

    Tobita, Yoshimasa; Yamaguchi, Takashi; Matsumoto, Mitsuo; Ono, Kiyoshi.

    1990-01-01

    The computer code system which can evaluate the mass balance and cycle cost in nuclear fuel cycle has been developing a PNC using an artificial intelligence technique. This system is composed of the expert system, data base and analysis codes. The expert system is the most important one in the system and the content of the expert system is explained in this paper. The expert system has the three functions. The first is the function of understanding the meaning of user's questions by natural language, the second is the function of selecting the best way to solve the problem given by the user using the knowledge which is already installed in the system, and the last is the function of answering the questions. The knowledge of the experts installed in the expert system is represented by the frame-type rules. Therefore, the knowledge will be simply added to the system, and consequently the system will be easily extended. (author)

  11. Residential water demand and water consumption: an econometric analysis on municipal panel data

    International Nuclear Information System (INIS)

    Musolesi, Antonio; Nosvelli, Mario

    2005-01-01

    This paper focuses on residential water demand estimation, a rather neglected issue in the Italian environmental economics literature as compared to other European countries and the USA. This may depend on the difficulties in gathering proper data and, most of all, panel data. In some cases statistical information are not suitably collected, while in other cases legal privacy ties put some obstacles to data set transfer. Our panel data set refers to 102 municipalities in Lombardy (Italy) for the period 1998-2002. When estimating the effect of water price, we control for other relevant variables such as: income, households demographical variables - (age structure, number of component for each family) number of firms in tertiary sector, water system length. In the considered period, the data show both an increase in population (1,5 %) and in the number of water consumers (7%) associated, on aggregate, with a slight reduction in water consumption (-1,1 %). Water demand models are estimated both in a static and in a dynamic framework. In the former, the emphasis is set on the sources of endogeneity in the average price by estimating a system of simultaneous equations and relevant variables for assessing consumer behaviour - such as socio demographic ones - are incorporated in the model. In the latter, econometric methods especially designed for endogeneity in panel data models (Arellano e Bond, 1991), are employed in order to estimate the long run elasticity of water demand with respect to average price. We find evidence both that consumers significantly respond to average price only in the long run with an elasticity of about - 0,3-0,4 and that income and demographic variables are crucial in explaining consumers' behaviour. Furthermore, water consumption presents a strong auto-regressive component, showing the emergence of inertia and path dependency in consumption habits. Such results suggest important implications for water policy planning. On one side demographic

  12. Computational analysis of anti-HIV-1 antibody neutralization panel data to identify potential functional epitope residues.

    Science.gov (United States)

    West, Anthony P; Scharf, Louise; Horwitz, Joshua; Klein, Florian; Nussenzweig, Michel C; Bjorkman, Pamela J

    2013-06-25

    Advances in single-cell antibody cloning methods have led to the identification of a variety of broadly neutralizing anti-HIV-1 antibodies. We developed a computational tool (Antibody Database) to help identify critical residues on the HIV-1 envelope protein whose natural variation affects antibody activity. Our simplifying assumption was that, for a given antibody, a significant portion of the dispersion of neutralization activity across a panel of HIV-1 strains is due to the amino acid identity or glycosylation state at a small number of specific sites, each acting independently. A model of an antibody's neutralization IC50 was developed in which each site contributes a term to the logarithm of the modeled IC50. The analysis program attempts to determine the set of rules that minimizes the sum of the residuals between observed and modeled IC50 values. The predictive quality of the identified rules may be assessed in part by whether there is support for rules within individual viral clades. As a test case, we analyzed antibody 8ANC195, an anti-glycoprotein gp120 antibody of unknown specificity. The model for this antibody indicated that several glycosylation sites were critical for neutralization. We evaluated this prediction by measuring neutralization potencies of 8ANC195 against HIV-1 in vitro and in an antibody therapy experiment in humanized mice. These experiments confirmed that 8ANC195 represents a distinct class of glycan-dependent anti-HIV-1 antibody and validated the utility of computational analysis of neutralization panel data.

  13. Analysis of expert opinion on uranium mill tailings remedial action project (UMTRAP) alternatives: a decision-support-system pilot study

    International Nuclear Information System (INIS)

    Thode, E.F.

    1983-01-01

    The Uranium Mill Tailings Remedial Action Project requires a specific remedial action individually chosen for each site. A panel of professionals was asked to rate objectives for remedial action and to rank alternatives for meeting the objectives. Responses were statistically analyzed. The panel's preference was earth cover in place at the Salt Lake City, Utah, and Shiprock, New Mexico, sites. Asphalt cover was next at Salt Lake City. This decision support system is appropriate for use with other inactive and active tailings sites

  14. Validation of the ULSAP Closed-Form Method for Ultimate Strength Analysis of Cross-Stiffened Panels

    OpenAIRE

    Dippold, Samuel Mark

    2005-01-01

    This thesis presents the results of 67 ABAQUS elasto-plastic Riks ultimate strength analyses of cross-stiffened panels. These panels cover a wide range of typical geometries. Uniaxial compression is applied to the panels, and in some cases combined with lateral pressure. For eight of the panels full-scale experimental results are available, and these verified the accuracy of the ABAQUS results. The 67 ABAQUS results were then compared to the ultimate strength predictions from the computer...

  15. Diagnosing battery behavior with an expert system in Prolog

    International Nuclear Information System (INIS)

    Kirkwood, N.; Weeks, D.J.

    1986-01-01

    Power for the Hubble Space Telescope comes from a system of 20 solar panel assemblies (SPAs) and six nickel-cadmium batteries. The HST battery system is simulated by the HST Electrical Power System (EPS) testbed at Marshall Space Flight Center. The Nickel Cadmium Battery Expert System (NICBES) is being used to diagnose faults of the testbed system, evaluate battery status and provide decision support for the engineer. Extensive telemetry of system operating conditions is relayed through a DEC LSI-11, and sent on to an IBM PC-AT. A BASIC program running on the PC monitors the flow of data, figures cell divergence and recharge ratio and stores these values, along with other selected data, for use by the expert system. The expert system is implemented in the logic programming language Prolog. It has three modes of operation: fault diagnosis, status and advice, and decision support. An alert or failure of the system will trigger a diagnosis by the system to assist the operator. The operator can also request battery status information as well as a number of plots and histograms of recent battery behavior. Trends in EOC and EOD voltage, recharge ratio and divergence are used by the expert system in its analysis of battery status. A future enhancement to the system includes the statistical prediction of battery life. Incorporating learning into the expert system is another possible enhancement; This is a difficult task, but one which could promise great rewards in improved battery performance

  16. Dynamic Analysis of Maneuvering Flexible Spacecraft Appendage Using Higher Order Sandwich Panel Theory

    Directory of Open Access Journals (Sweden)

    Milad Azimi

    Full Text Available Abstract This paper is devoted to the vibration of rotating flexible spacecraft. The maneuver of the spacecraft is modeled by a constant torque input acting on the hub. For the first time in this paper the equations of motion of flexible spacecraft are derived based on higher order sandwich panel theory (HSAPT. Hamilton's principle is used for driving the governing partial differential equations of motion. The generalized differential quadrature method (GDQ is utilized to solve the partial differential equations of motion. The effect of different parameters on vibration of rotating flexible spacecraft appendage is investigated. It is also investigated the effect of these parameters on natural frequencies. The result of HSAPT and Euler Bernoulli theory is compared with each other. To show the accuracy the natural frequencies of recent paper are compared with the literature.

  17. Primary commodity export and economic growth in sub sahara africa: evidence from panel data analysis

    Directory of Open Access Journals (Sweden)

    Matthew Ocran

    2011-08-01

    Full Text Available The paper sought to examine the impact of instability in primary commodity export earnings and the level of commodity dependence on economic growth in Sub Saharan Africa (SSA.  Fixed effects panel data estimator was used in the empirical estimation. The findings of the study suggest that there is a negative relationship between instability in export earnings and economic growth. The results also indicate that the level of commodity dependence matter in determining economic growth in the region. The results of the paper have economic development policy implications for SSA economies and these are not farfetched. First, it appears the difficult growth experience of SSA is not solely due to instability in export receipts. The question of continued dependence on a narrow range of primary commodities is also matter of great importance.

  18. Fiscal Capacity and Poverty Alleviation: A Panel Data Analysis for Yogyakarta Special Province, Indonesia

    Directory of Open Access Journals (Sweden)

    Jaka Sriyana

    2015-08-01

    Full Text Available This study attempts to analyze the role of fiscal capacity in poverty alleviation in Yogyakarta for the period of 2006-2013. For this purpose, this study uses panel data approach to estimate the empirical model involving four regencies and a city. This research f ound that fixed effects model is the best model to explain the role of fiscal capacity to the poverty rate. Overall, the results present that all independent variables are good predictors for poverty rate model. Based on the complete fixed effects model, the research shows that public spending and fiscal transfer are significant predictors for poverty rate. In contrast, government own revenue has negative impact to poverty rate. These results indicate fiscal capacity in among regencies and city in Yogyakarta has well managed to improve social welfare. This study also reveals that local governments need to improve their public spending as well as to strengthen their frameworks on public services policies.

  19. A Panel Data Analysis of the Impact of Macroeconomic Indicators on Firms’ Shares Performance in Nigeria

    Directory of Open Access Journals (Sweden)

    Michael S. Ogunmuyiwa

    2016-11-01

    Full Text Available This paper contributes to the ongoing debate on whether the impact of macroeconomic indicators on the stock market is positive or negative or of no effect by analyzing the relationship between macroeconomic fundamentals and performance of quoted firms on the Nigeria Stock Exchange market. A sample of fifty (50 quoted firms across eight (8 major sectors of the market was selected for the study. The static panel regression technique was employed on monthly data sourced from the Nigeria Stock Exchange (NSE and the Central Bank of Nigeria (CBN between 2007:1 and 2013:12. Results from empirical findings reveal that varying impacts exist between the macroeconomic indicators and firm share returns in Nigeria. It goes further to affirm that inflation rate, interest rate and exchange rate are the major significant macroeconomic indicators driving firm share returns in Nigeria.

  20. Is temporary employment a cause or consequence of poor mental health? A panel data analysis.

    Science.gov (United States)

    Dawson, Chris; Veliziotis, Michail; Pacheco, Gail; Webber, Don J

    2015-06-01

    Mental health status has an association with labour market outcomes. If people in temporary employment have poorer mental health than those in permanent employment then it is consistent with two mutually inclusive possibilities: temporary employment generates adverse mental health effects and/or individuals with poorer mental health select into temporary from permanent employment. We apply regression analyses to longitudinal data corresponding to about 50,000 observations across 8000 individuals between 1991 and 2008 drawn from the British Household Panel Survey. We find that permanent employees who will be in temporary employment in the future have poorer mental health than those who never become temporarily employed. We also reveal that this relationship is mediated by greater job dissatisfaction. Overall, these results suggest that permanent workers with poor mental health appear to select into temporary employment thus signalling that prior cross section studies may overestimate the influence of employment type on mental health. Copyright © 2015 Elsevier Ltd. All rights reserved.