WorldWideScience

Sample records for providing good boundary

  1. Good Fences: The Importance of Setting Boundaries for Peaceful Coexistence

    CERN Document Server

    Rutherford, Alex; Werfel, Justin; Bar-Yam, Shlomiya; Gard-Murray, Alexander; Gros, Andreas; Bar-Yam, Yaneer

    2011-01-01

    We consider the conditions of peace and violence among ethnic groups, testing a theory designed to predict the locations of violence and interventions that can promote peace. Characterizing the model's success in predicting peace requires examples where peace prevails despite diversity. Switzerland is recognized as a country of peace, stability and prosperity. This is surprising because of its linguistic and religious diversity that in other parts of the world lead to conflict and violence. Here we analyze how peaceful stability is maintained. Our analysis shows that peace does not depend on integrated coexistence, but rather on well defined topographical and political boundaries separating groups. Mountains and lakes are an important part of the boundaries between sharply defined linguistic areas. Political canton and circle (sub-canton) boundaries often separate religious groups. Where such boundaries do not appear to be sufficient, we find that specific aspects of the population distribution either guarant...

  2. VET Providers Planning to Deliver Degrees: Good Practice Guide

    Science.gov (United States)

    National Centre for Vocational Education Research (NCVER), 2015

    2015-01-01

    This good practice guide is intended to assist public and private registered training organisations (RTOs) planning to commence higher education (HE) delivery. The guide is based on research undertaken by Victor Callan and Kaye Bowman, who completed case studies with six providers currently delivering higher education qualifications in addition to…

  3. Defining, valuing and providing ecosystem goods and services

    Science.gov (United States)

    Thomas C. Brown; John C. Bergstrom; John B. Loomis

    2007-01-01

    Ecosystem services are the specific results of ecosystem processes that either directly sustain or enhance human life (as does natural protection from the sun's harmful ultraviolet rays) or maintain the qualify of ecosystem goods (as water purification maintains the quality of streamflow). "Ecosystem service" has come to represent several related topics...

  4. Provide good air quality for people and improve their productivity

    DEFF Research Database (Denmark)

    Fanger, Povl Ole

    2000-01-01

    Three recent independent studies have documented that the quality of indoor air has a significant and positive influence on the productivity of office workers. A combined analysis of the results of the three studies shows a significant relationship between productivity and perceived indoor air...... quality. The impact on productivity justifies a much higher indoor air quality than the minimum levels prescribed in present standards and guidelines. One way of providing air of high quality for people to breathe, without involving excessive ventilation rates and energy use, is to provide "personalized...

  5. 49 CFR 375.409 - May household goods brokers provide estimates?

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false May household goods brokers provide estimates? 375... REGULATIONS TRANSPORTATION OF HOUSEHOLD GOODS IN INTERSTATE COMMERCE; CONSUMER PROTECTION REGULATIONS Estimating Charges § 375.409 May household goods brokers provide estimates? A household goods broker must not...

  6. A regulatory framework for the trans-boundary transportation of dangerous goods in Southern Africa : an environmental perspective / Jean-Claude Nkwanyuo Ashukem

    OpenAIRE

    Ashukem, Jean-Claude Nkwanyuo

    2012-01-01

    The goal of this dissertation is to analyse the extent to which the South African legal framework governing the trans-boundary transportation of dangerous goods, provides for the regulation of environmental aspects in terms of dangerous goods transportation. The dissertation examines the role of regional and sub-regional laws in this regard in an effort to ascertain whether there is sufficient legal certainty and harmonisation of laws for environmental regulation. No specific l...

  7. Preference of Chinese general public and healthcare providers for a good death.

    Science.gov (United States)

    Haishan, Huang; Hongjuan, Liu; Tieying, Zeng; Xuemei, Pu

    2015-03-01

    The aim of this study is to find and compare the current situation between common people and healthcare providers' preferences for a good death in the context of Chinese culture. A cross-sectional anonymous questionnaire survey covering 190 ordinary Chinese people and 323 healthcare providers was conducted. An inventory of the good death was translated and the subjects were surveyed about their attitude toward it. Permission to conduct the study was granted by department chiefs, nurse managers and the participants themselves. The participants were informed that they took part on a voluntary and anonymous basis, that they could withdraw at any time, that they had the right to ignore questions they did not wish to answer, and that whatever they chose to do would not jeopardize their employment conditions. The attributes that were perceived as important by major respondents for a good death were maintaining hope and pleasure, good relationship with medical staff, good relationship with family, independence, environment comfort, being respected as an individual, preparation for death, physical and psychological comfort, dying in a favorite place, and not being a burden to others. And some relatively less important characteristics were life completion, receiving enough treatment, natural death, controlling over the future, unawareness of death, pride and beauty, feeling that one's life is worth living, and religious and spiritual comfort. We also found that healthcare providers were more likely than general out-patients to perceive "physical and psychological comfort," "dying in a favorite place," "good relationship with medical staff," and "natural death" as important for a good death. This study offers healthcare providers in China a fundamental understanding of the normal expectations of the general public for a good death. It is believed that these findings in our study are valuable to improve palliative care in China. We compared the attitudes of Chinese and

  8. Boundary Negotiating Artifacts in Personal Informatics: Patient-Provider Collaboration with Patient-Generated Data.

    Science.gov (United States)

    Chung, Chia-Fang; Dew, Kristin; Cole, Allison; Zia, Jasmine; Fogarty, James; Kientz, Julie A; Munson, Sean A

    2016-02-27

    Patient-generated data is increasingly common in chronic disease care management. Smartphone applications and wearable sensors help patients more easily collect health information. However, current commercial tools often do not effectively support patients and providers in collaboration surrounding these data. This paper examines patient expectations and current collaboration practices around patient-generated data. We survey 211 patients, interview 18 patients, and re-analyze a dataset of 21 provider interviews. We find that collaboration occurs in every stage of self-tracking and that patients and providers create boundary negotiating artifacts to support the collaboration. Building upon current practices with patient-generated data, we use these theories of patient and provider collaboration to analyze misunderstandings and privacy concerns as well as identify opportunities to better support these collaborations. We reflect on the social nature of patient-provider collaboration to suggest future development of the stage-based model of personal informatics and the theory of boundary negotiating artifacts.

  9. What is a good health check? An interview study of health check providers' views and practices.

    Science.gov (United States)

    Stol, Yrrah H; Asscher, Eva C A; Schermer, Maartje H N

    2017-10-02

    Health checks identify (risk factors for) disease in people without symptoms. They may be offered by the government through population screenings and by other providers to individual users as 'personal health checks'. Health check providers' perspective of 'good' health checks may further the debate on the ethical evaluation and possible regulation of these personal health checks. In 2015, we interviewed twenty Dutch health check providers on criteria for 'good' health checks, and the role these criteria play in their practices. Providers unanimously formulate a number of minimal criteria: Checks must focus on (risk factors for) treatable/preventable disease; Tests must be reliable and clinically valid; Participation must be informed and voluntary; Checks should provide more benefits than harms; Governmental screenings should be cost-effective. Aspirational criteria mentioned were: Follow-up care should be provided; Providers should be skilled and experienced professionals that put the benefit of (potential) users first; Providers should take time and attention. Some criteria were contested: People should be free to test on any (risk factor for) disease; Health checks should only be performed in people at high risk for disease that are likely to implement health advice; Follow up care of privately funded tests should not drain on collective resources. Providers do not always fulfil their own criteria. Their reasons reveal conflicts between criteria, conflicts between criteria and other ethical values, and point to components in the (Dutch) organisation of health care that hinder an ethical provision of health checks. Moreover, providers consider informed consent a criterion that is hard to establish in practice. According to providers, personal health checks should meet the same criteria as population screenings, with the exception of cost-effectiveness. Providers do not always fulfil their own criteria. Results indicate that in thinking about the ethics of health

  10. Full-Length Recombinant Human Proteoglycan 4 Interacts with Hyaluronan to Provide Cartilage Boundary Lubrication.

    Science.gov (United States)

    Abubacker, Saleem; Dorosz, Samuel G; Ponjevic, Dragana; Jay, Gregory D; Matyas, John R; Schmidt, Tannin A

    2016-04-01

    Proteoglycan 4 (PRG4) is a mucin-like glycoprotein present in synovial fluid and at the surface of articular cartilage. The objectives of this study were to (1) assess the articular cartilage surface adsorption and in vitro cartilage boundary lubricating ability of full-length recombinant human PRG4 (rhPRG4), and (2) cartilage boundary lubricating ability of purified rhPRG4, both alone and in combination with hyaluronan (HA). rhPRG4 adsorption onto articular cartilage explants was assessed by immunohistochemistry and dot blot. An in vitro cartilage-cartilage friction test was used to assess rhPRG4's cartilage boundary lubricating ability compared to bovine PRG4, and that of purified rhPRG4 both alone and in combination with HA. rhPRG4 was able to adsorb to the articular surface, as well as the cut surface, of cartilage explants. The kinetic coefficient of friction of rhPRG4 was similar to that of PRG4 (p = 0.16) and lower than phosphate-buffered saline (p < 0.05), while that of purified rhPRG4 + HA was significantly lower than rhPRG4 alone (p < 0.05). This study demonstrates that rhPRG4 can adsorb to an intact articular cartilage surface and functions as an effective boundary lubricant, both alone and with HA, and provides the foundation for in vivo evaluation of this clinically relevant full-length rhPRG4 for treatment of osteoarthritis.

  11. Chemotaxis can provide biological organisms with good solutions to the travelling salesman problem.

    Science.gov (United States)

    Reynolds, A M

    2011-05-01

    The ability to find good solutions to the traveling salesman problem can benefit some biological organisms. Bacterial infection would, for instance, be eradicated most promptly if cells of the immune system minimized the total distance they traveled when moving between bacteria. Similarly, foragers would maximize their net energy gain if the distance that they traveled between multiple dispersed prey items was minimized. The traveling salesman problem is one of the most intensively studied problems in combinatorial optimization. There are no efficient algorithms for even solving the problem approximately (within a guaranteed constant factor from the optimum) because the problem is nondeterministic polynomial time complete. The best approximate algorithms can typically find solutions within 1%-2% of the optimal, but these are computationally intensive and can not be implemented by biological organisms. Biological organisms could, in principle, implement the less efficient greedy nearest-neighbor algorithm, i.e., always move to the nearest surviving target. Implementation of this strategy does, however, require quite sophisticated cognitive abilities and prior knowledge of the target locations. Here, with the aid of numerical simulations, it is shown that biological organisms can simply use chemotaxis to solve, or at worst provide good solutions (comparable to those found by the greedy algorithm) to, the traveling salesman problem when the targets are sources of a chemoattractant and are modest in number (n < 10). This applies to neutrophils and macrophages in microbial defense and to some predators.

  12. The art of good governance: how images from the past provide inspiration for modern practice

    NARCIS (Netherlands)

    de Graaf, G.; van Asperen, H.

    2016-01-01

    Since the early 1990s, discourse on ‘good governance’ has become more prevalent. What ‘good governance’ means and entails, however, and when we can speak of ‘good’ governance in this discourse, is not always clear. Many scholars in public administration and other social sciences writing about good

  13. Production Within and Beyond Imperial Boundaries: Goods, Exchange, and Power in Roman Europe

    Directory of Open Access Journals (Sweden)

    Peter S. Wells

    2015-08-01

    Full Text Available After Rome had conquered much of temperate Europe, the administration directed the establishment of industries important to the maintenance of military and economic control of the new provinces. These included stone quarries, pottery manufactures, and metal industries. Recent research shows that much production was not as centralized as has been believed; diverse industrial sites throughout the provincial landscapes indicate a variety of arrangements for supplying the needs of the empire. In many instances, Roman production systems relied upon indigenous traditions of manufacturing. The provincial economies depended also upon materials collected and processed beyond the imperial frontiers. Analysis of Roman imports in Germany, Scandinavia, and eastern Europe, and of the contexts in which they occur, suggesta that goods produced outside of the empire played a major role in the imperial economy. These commercial links, over which Roman authorities had no effective control, contributed to substantial changes in economics and in social and political configurations in societies beyond the Roman frontier.

  14. Good Fences Make Good Neighbours: Challenges and Opportunities in Finalising Maritime Boundary Delimitation in the Malacca Strait Between Indonesia and Malaysia

    OpenAIRE

    Arsana, I Made Andi

    2014-01-01

    Maritime boundary issues are by no mean new for Indonesia and Malaysia. Notwithstanding the fact that Indonesia and Malaysia signed a maritime boundary agreement as early as 1969, the twoStates have yet to finalise various pending maritime boundaries between them. Compelling cases such as Ambalat Block dispute (2005, 2009), Tanjung Berakit incident (2010) another incidence in the Malacca Strait (April 2011) and others maritime boundary issues are apparently consequences of unfinished maritime...

  15. Pulmonary rehabilitation and COPD: providing patients a good environment for optimizing therapy

    Directory of Open Access Journals (Sweden)

    Corhay JL

    2013-12-01

    Full Text Available Jean-Louis Corhay, Delphine Nguyen Dang, Hélène Van Cauwenberge, Renaud Louis Department of Pneumology, Centre Hospitalier Universitaire du Sart-Tilman Liège, Liège, Belgium Abstract: Chronic obstructive pulmonary disease (COPD is an obstructive and progressive airway disease associated with an important reduction in daily physical activity and psychological problems that contribute to the patient's disability and poor health-related quality of life (HRQoL. Nowadays, pulmonary rehabilitation (PR plays an essential role in the management of symptomatic patients with COPD, by breaking the vicious circle of dyspnea–decreased activity–deconditioning–isolation. Indeed the main benefits of comprehensive PR programs for patients with COPD include a decrease in symptoms (dyspnea and fatigue, improvements in exercise tolerance and HRQoL, reduction of health care utilization (particularly bed-days, as well as an increase in physical activity. Several randomized studies and meta-analyses greatly established the benefits of PR, which additionally, is recommended in a number of influential guidelines. This review aimed to highlight the impact of PR on COPD patients, focusing on the clinical usefulness of PR, which provides patients a good support for change. Keywords: chronic obstructive pulmonary disease, exercise training, physical activity, quality of life

  16. Airway hyper-responsiveness to mannitol provides a good evaluation of atopy in childhood asthma.

    Science.gov (United States)

    Attanasi, M; Rapino, D; Marcovecchio, M L; Consilvio, N P; Scaparrotta, A; Cingolani, A; Di Pillo, S; Chiarelli, F

    2015-07-01

    The relationship between airway hyper-responsiveness (AHR) and atopy has been previously investigated, but there are still some issues to be clarified. The aim of this study was to assess the link between AHR and mannitol and atopy in asthmatic children. We evaluated 44 children with asthma, aged 6-16 years of age, using skin prick tests (SPTs), serum total and specific immunoglobulin E (IgE) levels and the mannitol challenge test (MCT). We found a good correlation between AHR to mannitol and specific IgE against Dermatophagoides pteronissinus (r = -0.66, p mannitol and serum total IgE (r = -0.30; p = 0.03), the sum of specific IgE to aeroallergens (r = -0.37, p = 0.01) and the number of positive SPTs (r = -0.31, p = 0.02). Measuring AHR with MCT might provide an accurate evaluation of the degree of atopy in children. The patients with a higher degree of atopy were significantly more reactive to mannitol. In clinical practice, these results indicate that children with asthma who are more atopic may require more intensive treatment strategies to reduce AHR. ©2015 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.

  17. Identification, definition and quantification of goods and services provided by marine biodiversity: Implications for the ecosystem approach

    NARCIS (Netherlands)

    Beaumont, N.J.; Austen, M.C.; Atkins, J.P.; Burdon, D.; Degraer, S.; Dentinho, T.P.; Serous, S.; Holm, P.; Horton, T.; Ierland, van E.C.; Marboe, A.H.; Starkey, D.J.; Townsend, M.; Zarzycki, T.

    2007-01-01

    This paper identifies and defines ecosystem goods and services provided by marine biodiversity. Case studies have been used to provide an insight into the practical issues associated with the assessment of marine ecosystem goods and services at specific locations. The aim of this research was to

  18. The Other partner: The changing role of good provider for men's union formation in industrialized countries

    Directory of Open Access Journals (Sweden)

    Goldscheider, Frances

    2006-01-01

    Full Text Available EnglishMost studies of union formation behaviors have focused on women and children,with less emphasis on men. Using comparable retrospective survey data, this study looks at the waysCanadian, Italian and Swedish men begin conjugal life (distinguishing between marriage andcohabitation and at how the effects of their good provider status qualifications have changed in thelast 30 years. Results for Canadian men have shown that the simple patterns that have been assumed toshape separate and symmetrical roles for men and women are taking new shapes with the growth incohabitation and changes in women's economic roles. Our study will extend these results to examine twocountries at very different levels of cohabitation prevalence: Italy, where the growth in cohabitationhas just begun, and Sweden, where it has been underway much longer than in Canada. Our results showstrongly parallel changes underway in each country, indicating that it is important to continue tocompare, both between countries and over time, if we are to understand the situations fostering (ornot changing gender roles for men as good providers.FrenchLa plupart des études sur les comportements durant le passage à la vie de coupleont porté sur les femmes et les enfants, avec moins d’emphase sur le comportement des hommes. En se servant de données comparables d’enquêtesrétrospectives, cet article examine les différentes façons dont les Canadiens, lesItaliens et les Suédois commencent leur vie conjugale (en distinguant entre lemarriage et la cohabitation ainsi que les effets causés par les changements destrente dernières années dans leur statut de pourvoyeur. Chez les Canadiens, lesrésultats démontrent que les habitudes de vie qui avaient été prises pour modelerdes rôles masculins et féminins séparés et symétriques sont en train de prendrede nouvelles formes, avec une croissance dans les taux de cohabitation et deschangements dans les rôles économiques des femmes

  19. Deeply divergent archaic mitochondrial genome provides lower time boundary for African gene flow into Neanderthals

    Science.gov (United States)

    Posth, Cosimo; Wißing, Christoph; Kitagawa, Keiko; Pagani, Luca; van Holstein, Laura; Racimo, Fernando; Wehrberger, Kurt; Conard, Nicholas J.; Kind, Claus Joachim; Bocherens, Hervé; Krause, Johannes

    2017-01-01

    Ancient DNA is revealing new insights into the genetic relationship between Pleistocene hominins and modern humans. Nuclear DNA indicated Neanderthals as a sister group of Denisovans after diverging from modern humans. However, the closer affinity of the Neanderthal mitochondrial DNA (mtDNA) to modern humans than Denisovans has recently been suggested as the result of gene flow from an African source into Neanderthals before 100,000 years ago. Here we report the complete mtDNA of an archaic femur from the Hohlenstein–Stadel (HST) cave in southwestern Germany. HST carries the deepest divergent mtDNA lineage that splits from other Neanderthals ∼270,000 years ago, providing a lower boundary for the time of the putative mtDNA introgression event. We demonstrate that a complete Neanderthal mtDNA replacement is feasible over this time interval even with minimal hominin introgression. The highly divergent HST branch is indicative of greater mtDNA diversity during the Middle Pleistocene than in later periods. PMID:28675384

  20. Guidance for health and social care providers, principles of good practice in medication reconciliation

    LENUS (Irish Health Repository)

    Ward, Marie

    2017-07-17

    Healthcare organisations have a responsibility for ensuring that the governance of workplace settings creates a culture that supports good professional practice. Encouraging such a culture needs to start from an understanding of the factors that make it difficult for health professionals to raise issues of concern in relation to patient safety. The focus of this study is to determine whether a customised education intervention, developed as part of the study, with interns and senior house officers (SHOs) can imbue a culture of medical professionalism in relation to patient safety and support junior doctors to raise issues of concern, while shaping a culture of responsiveness and learning.

  1. Trust and altruism--organ distribution scandals: do they provide good reasons to refuse posthumous donation?

    Science.gov (United States)

    Dufner, Annette; Harris, John

    2015-06-01

    A recent organ distribution scandal in Germany raises questions of general importance on which many thousands of lives may well depend. The scandal in Germany has produced reactions that are likely to occur whenever and wherever distribution irregularities occur and become public knowledge. After it had become known that physicians in three German hospitals were in the habit of manipulating records in order to fast-track their patients' cases, the country experienced a decrease of available organs by a staggering 40% in October 2012. Even though this loss of trust by donors and their families is understandable, and potentially a legitimate form of protest against wrongful distribution, the withdrawal of agreement to serve as a posthumous donor in response to irregularities also inevitably results in avoidable poor outcomes for highly vulnerable individuals. In this paper, we provide a moral analysis of such dilemmas and make recommendations as to the way forward. © The Author 2015. Published by Oxford University Press, on behalf of the Journal of Medicine and Philosophy Inc. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  2. Exploring sensitive boundaries in nursing education: attitudes of undergraduate student nurses providing intimate care to patients.

    Science.gov (United States)

    Crossan, M; Mathew, T K

    2013-07-01

    Nursing students often feel challenged and intimidated to provide intimate care to patients in the health care setting. Student nurses in particular are faced with social, professional, academic and peer expectations and experience high levels of stress when providing this intimate care. Explore student nurses attitudes to providing intimate care. Year two and year three students of a three year undergraduate nursing programme completed a descriptive Nursing Students Intimate Care (NSIC) survey with open ended questions. This study discusses student responses to the question: Did you feel it was appropriate for a nurse to provide intimate care to a patient of the opposite sex? Three major themes were identified: societal and self-determined role expectations, comfort and discomfort providing intimate care, and age and gender of the carer and recipient. Student nurses face numerous challenges when having to provide intimate care to patients. These challenges are influenced by the age, gender, levels of comfort of the nurse and the patient and is related to the nature of intimate care being provided. Student nurses will benefit from pre-clinical simulated training experiences in providing intimate care. This training needs to specifically consider being sensitive to the needs of the patient, maintaining patient dignity, negotiating, accommodating and implementing plan of care while being competent and professional in their approach to providing intimate care. Copyright © 2013 Elsevier Ltd. All rights reserved.

  3. The Public Good and Academic Capitalism: Science and Engineering Doctoral Students and Faculty on the Boundary of Knowledge Regimes

    Science.gov (United States)

    Szelényi, Katalin; Bresonis, Kate

    2014-01-01

    This article examines the research-related experiences of 48 doctoral students and 22 faculty in science and engineering fields at three research universities, with specific emphasis on the intersection of the public good and academic capitalism. Identifying an expansive, intersecting organizational space between the public good and academic…

  4. A Pole-Zero Filter Cascade Provides Good Fits to Human Masking Data and to Basilar Membrane and Neural Data

    Science.gov (United States)

    Lyon, Richard F.

    2011-11-01

    A cascade of two-pole-two-zero filters with level-dependent pole and zero dampings, with few parameters, can provide a good match to human psychophysical and physiological data. The model has been fitted to data on detection threshold for tones in notched-noise masking, including bandwidth and filter shape changes over a wide range of levels, and has been shown to provide better fits with fewer parameters compared to other auditory filter models such as gammachirps. Originally motivated as an efficient machine implementation of auditory filtering related to the WKB analysis method of cochlear wave propagation, such filter cascades also provide good fits to mechanical basilar membrane data, and to auditory nerve data, including linear low-frequency tail response, level-dependent peak gain, sharp tuning curves, nonlinear compression curves, level-independent zero-crossing times in the impulse response, realistic instantaneous frequency glides, and appropriate level-dependent group delay even with minimum-phase response. As part of exploring different level-dependent parameterizations of such filter cascades, we have identified a simple sufficient condition for stable zero-crossing times, based on the shifting property of the Laplace transform: simply move all the s-domain poles and zeros by equal amounts in the real-s direction. Such pole-zero filter cascades are efficient front ends for machine hearing applications, such as music information retrieval, content identification, speech recognition, and sound indexing.

  5. Endorsing good quality assurance practices in molecular pathology: risks and recommendations for diagnostic laboratories and external quality assessment providers.

    Science.gov (United States)

    Tembuyser, Lien; Dequeker, Elisabeth M C

    2016-01-01

    Quality assurance is an indispensable element in a molecular diagnostic laboratory. The ultimate goal is to warrant patient safety. Several risks that can compromise high quality procedures are at stake, from sample collection to the test performed by the laboratory, the reporting of test results to clinicians, and the organization of effective external quality assessment schemes. Quality assurance should therefore be safeguarded at each level and should imply a holistic multidisciplinary approach. This review aims to provide an overview of good quality assurance practices and discusses certain risks and recommendations to promote and improve quality assurance for both diagnostic laboratories and for external quality assessment providers. The number of molecular targets is continuously rising, and new technologies are evolving. As this poses challenges for clinical implementation and increases the demand for external quality assessment, the formation of an international association for improving quality assurance in molecular pathology is called for.

  6. Impact of educational intervention on knowledge, attitude and awareness of good clinical practice among health care providers.

    Science.gov (United States)

    Goel, Divya; Walia, Rani; Sharma, Poonam; Kaur, Harmanjeet; Agnihotri, Pallak

    2017-01-01

    Clinical trials play an important role in the generation of evidence-based data in health care practices. To ensure the credibility of data and the safety and well-being of the patients Good clinical practice (GCP) guidelines play an important role. At present, we have little knowledge about awareness of GCP guidelines among health care providers in India. To assess the level of awareness, and perception of the health care providers toward GCP and subsequent change in these after a dayer training session on GCP guidelines. A cross-sectional descriptive questionnaire-based study was conducted amongst health care providers, that is, doctors, dentists, nurses of a Tertiary Health Care and Teaching Institute. Participants were given descriptive questionnaire; they completed the questionnaire before and after undergoing a day training program in GCP guidelines. The impact of the effectiveness of educational intervention among healthcare professionals was evaluated by two-tailed Z-test. Out of 120 participants, 80 were medical doctors, 20 dental doctors, and 20 nurses. A dayse training program on GCP guidelines was found to increase positive attitudes toward various aspects of clinical trials. A day's training program on GCP guidelines may help to increase the knowledge as well as awareness about principles and techniques of clinical research, which will increase the credibility of clinical research in the country.

  7. The determinants and outcomes of good provider communication: a cross-sectional study in seven African countries.

    Science.gov (United States)

    Larson, Elysia; Leslie, Hannah H; Kruk, Margaret E

    2017-07-02

    To determine the extent of provider communication, predictors of good communication and the association between provider communication and patient outcomes, such as patient satisfaction, in seven sub-Saharan African countries. Cross-sectional, multicountry study. Data from recent Service Provision Assessment (SPA) surveys from seven countries in sub-Saharan Africa. SPA surveys include assessment of facility inputs and processes as well as interviews with caretakers of sick children. These data included 3898 facilities and 4627 providers. 16 352 caregivers visiting the facility for their sick children. We developed an index of four recommended provider communication items for a sick child assessment based on WHO guidelines. We assessed potential predictors of provider communication and considered whether better provider communication was associated with intent to return to the facility for care. The average score of the composite indicator of provider communication was low, at 35% (SD 26.9). Fifty-four per cent of caregivers reported that they were told the child's diagnosis, and only 10% reported that they were counselled on feeding for the child. Caregivers' educational attainment and provider preservice education and training in integrated management of childhood illness were associated with better communication. Private facilities and facilities with better infrastructure received higher communication scores. Caretakers reporting better communication were significantly more likely to state intent to return to the facility (relative risk: 1.19, 95% CI 1.16 to 1.22). There are major deficiencies in communication during sick child visits. These are associated with lower provider education as well as less well-equipped facilities. Poor communication, in turn, is linked to lower satisfaction and intention to return to facility among caregivers of sick children. Countries should test strategies for enhancing quality of communication in their efforts to improve

  8. Perspectives on providing good access to dental services for elderly people: patient selection, dentists' responsibility and budget management.

    Science.gov (United States)

    Grytten, Jostein; Holst, Dorthe

    2013-06-01

    To suggest a model for organizing and financing dental services for elderly people so that they have good access to services. There are few studies on how dental services for elderly people should be organized and financed. This is surprising if we take into consideration the fact that the proportion of elderly people is growing faster than any other group in the population, and that elderly people have more dental diseases and poorer access to dental services than the rest of the adult population. In several countries, dental services are characterized by private providers who often operate in a market with competition and free price-setting. Private dentists have no community responsibility, and they are free to choose which patients they treat. Literature review and critical reasoning. In order to avoid patient selection, a patient list system for elderly people is recommended, with per capita remuneration for the patients that the dentist is given responsibility for. The patient list system means that the dentist assumes responsibility for a well-defined list of elderly people. Our model will lead to greater security in the dentist/patient relationship, and patients with great treatment needs will be ensured access to dental services. © 2012 John Wiley & Sons A/S and The Gerodontology Society. Published by John Wiley & Sons Ltd.

  9. Using EarthScope Construction of the Plate Boundary Observatory to Provide Locally Based Experiential Education and Outreach

    Science.gov (United States)

    Jackson, M.; Eriksson, S.; Barbour, K.; Venator, S.; Mencin, D.; Prescott, W.

    2006-12-01

    EarthScope is an NSF-funded, national science initiative to explore the structure and evolution of the North American continent and to understand the physical processes controlling earthquakes and volcanoes. This large-scale experiment provides locally based opportunities for education and outreach which engage students at various levels and the public. UNAVCO is responsible for the Plate Boundary Observatory (PBO) component of EarthScope. PBO includes the installation and operations and maintenance of large networks of Global Positioning Satellite (GPS), strainmeter, seismometer, and tiltmeter instruments and the acquisition of satellite radar imagery, all of which will be used to measure and map the smallest movements across faults, the magma movement inside active volcanoes and the very wide areas of deformation associated with plate tectonic motion. UNAVCO, through its own education and outreach activities and in collaboration with the EarthScope E&O Program, uses the PBO construction activities to increase the understanding and public appreciation of geodynamics, earth deformation processes, and their relevance to society. These include programs for public outreach via various media, events associated with local installations, a program to employ students in the construction of PBO, and development of curricular materials by use in local schools associated with the EarthScope geographic areas of focus. PBO provides information to the media to serve the needs of various groups and localities, including interpretive centers at national parks and forests, such as Mt. St. Helens. UNAVCO staff contributed to a television special with the Spanish language network Univision Aquí y Ahora program focused on the San Andreas Fault and volcanoes in Alaska. PBO participated in an Education Day at the Pathfinder Ranch Science and Outdoor Education School in Mountain Center, California. Pathfinder Ranch hosts two of the eight EarthScope borehole strainmeters in the Anza

  10. Consumer Behavior Under Conflicting Information Provided by Interested Parties: Implications for Equilibrium in the Market for Credence Goods.

    Science.gov (United States)

    Russo, Carlo; Tufi, Eleonora

    2016-01-01

    Incomplete information in food consumption is a relevant topic in agricultural economics. This paper proposes a theoretical model describing consumer behavior, market equilibrium and public intervention in an industry where consumers must rely on the information of interested parties such as producers or associations. We provide simple game theory model showing the link between price competition and the strategic use of information. If information are unverifiable (as in the case of credence attributes) firms may have no incentive to advertise true claims and consumer decisions may be biased. Our model incorporates the opportunistic behavior of self-interested information providers. The result is a model of competition in prices and information finding a potential for market failure and public intervention. In the paper we discuss the efficiency of three possible regulations: banning false claims, subsidizing advertising campaigns, and public statement if favor of true claims. In that context, some recent patents related to both the regulatory compliance in communication and to the reduction of asymmetric information between producers and consumers have been considered. Finally, we found that the efficiency of these policy tools is affected by the reputation of trustworthiness of the firms.

  11. Does the macaque monkey provide a good model for studying human executive control? A comparative behavioral study of task switching.

    Directory of Open Access Journals (Sweden)

    Luana Caselli

    Full Text Available The ability to swiftly and smoothly switch from one task set to another is central to intelligent behavior, because it allows an organism to flexibly adapt to ever changing environmental conditions and internal needs. For this reason, researchers interested in executive control processes have often relied on task-switching paradigms as powerful tools to uncover the underlying cognitive and brain architecture. In order to gather fundamental information at the single-cell level, it would be greatly helpful to demonstrate that non-human primates, especially the macaque monkey, share with us similar behavioral manifestations of task-switching and therefore, in all likelihood, similar underlying brain mechanisms. Unfortunately, prior attempts have provided negative results (e.g., Stoet & Snyder, 2003b, in that it was reported that macaques do not show the typical signature of task-switching operations at the behavioral level, represented by switch costs. If confirmed, this would indicate that the macaque cannot be used as a model approach to explore human executive control mechanisms by means of task-switching paradigms. We have therefore decided to re-explore this issue, by conducting a comparative experiment on a group of human participants and two macaque monkeys, whereby we measured and compared performance costs linked to task switching and resistance to interference across the two species. Contrary to what previously reported, we found that both species display robust task switching costs, thus supporting the claim that macaque monkeys provide an exquisitely suitable model to study the brain mechanisms responsible for maintaining and switching task sets.

  12. Analgesia Is Enhanced by Providing Information regarding Good Outcomes Associated with an Odor: Placebo Effects in Aromatherapy?

    Directory of Open Access Journals (Sweden)

    Yuri Masaoka

    2013-01-01

    Full Text Available No previous report has described whether information regarding an odor used in aromatherapy has placebo effects. We investigated whether placebo analgesia was engendered by verbal information regarding the analgesic effects of an odor. Twelve of 24 subjects were provided with the information that a lavender odor would reduce pain (informed, whereas the other 12 subjects were not (not-informed. Concurrent with respiration recording, the subjects were administered a lavender-odor or no-odor treatment during application of painful stimulation to the forefinger. The subjects reported their experience of pain and its unpleasantness on a visual analogue scale after the painful stimulation. The lavender-odor treatment significantly alleviated pain and unpleasantness compared with the no-odor treatment in the informed (P<0.01 and not-informed groups (P<0.05. The no-odor treatment in the informed group significantly alleviated pain and unpleasantness compared with both the no-odor and lavender-odor treatments in the not-informed group (P<0.05. Rapid and shallow breathing induced by the painful stimulation became slow and deep during the lavender-odor and no-odor treatments in both groups. Information regarding a lavender odor, the lavender odor itself, and slower breathing contributed to reduced perceptions of pain and unpleasantness during painful stimulation, suggesting that placebo effects significantly contribute to analgesia in aromatherapy.

  13. The LS-STAG method: A new immersed boundary/level-set method for the computation of incompressible viscous flows in complex moving geometries with good conservation properties

    Science.gov (United States)

    Cheny, Yoann; Botella, Olivier

    2010-02-01

    This paper concerns the development of a new Cartesian grid/immersed boundary (IB) method for the computation of incompressible viscous flows in two-dimensional irregular geometries. In IB methods, the computational grid is not aligned with the irregular boundary, and of upmost importance for accuracy and stability is the discretization in cells which are cut by the boundary, the so-called "cut-cells". In this paper, we present a new IB method, called the LS-STAG method, which is based on the MAC method for staggered Cartesian grids and where the irregular boundary is sharply represented by its level-set function. This implicit representation of the immersed boundary enables us to calculate efficiently the geometry parameters of the cut-cells. We have achieved a novel discretization of the fluxes in the cut-cells by enforcing the strict conservation of total mass, momentum and kinetic energy at the discrete level. Our discretization in the cut-cells is consistent with the MAC discretization used in Cartesian fluid cells, and has the ability to preserve the five-point Cartesian structure of the stencil, resulting in a highly computationally efficient method. The accuracy and robustness of our method is assessed on canonical flows at low to moderate Reynolds number: Taylor-Couette flow, flows past a circular cylinder, including the case where the cylinder has forced oscillatory rotations. Finally, we will extend the LS-STAG method to the handling of moving immersed boundaries and present some results for the transversely oscillating cylinder flow in a free-stream.

  14. Working with boundaries in systems psychodynamic consulting

    Directory of Open Access Journals (Sweden)

    Henk Struwig

    2012-01-01

    Full Text Available Orientation: The researcher described the systems psychodynamics of boundary management in organisations. The data showed how effective boundary management leads to good holding environments that, in turn, lead to containing difficult emotions.Research purpose: The purpose of the research was to produce a set of theoretical assumptions about organisational boundaries and boundary management in organisations and, from these, to develop a set of hypotheses as a thinking framework for practising consulting psychologists when they work with boundaries from a systems psychodynamic stance.Motivation for the study: The researcher used the belief that organisational boundaries reflect the essence of organisations. Consulting to boundary managers could facilitate a deep understanding of organisational dynamics.Research design, approach and method: The researcher followed a case study design. He used systems psychodynamic discourse analysis. It led to six working hypotheses.Main findings: The primary task of boundary management is to hold the polarities of integration and differentiation and not allow the system to become fragmented or overly integrated. Boundary management is a primary task and an ongoing activity of entire organisations.Practical/managerial implications: Organisations should work actively at effective boundary management and at balancing integration and differentiation. Leaders should become aware of how effective boundary management leads to good holding environments that, in turn, lead to containing difficult emotions in organisations.Contribution/value-add: The researcher provided a boundary-consulting framework in order to assist consultants to balance the conceptual with the practical when they consult.

  15. Good teacher, good tutor

    National Research Council Canada - National Science Library

    Couto LB; Romão GS; Bestetti RB

    2016-01-01

    ..., Ribeirão Preto, Brazil We have read with great interest the paper by Kassab et al, who have essentially shown that good teachers will be good tutors in a problem-based learning (PBL) environment...

  16. EnviroAtlas: Providing Nationwide Geospatial Ecosystem Goods and Services Indicators and Indices to Inform Decision-Making, Research, and Education

    Science.gov (United States)

    Neale, A. C.

    2016-12-01

    EnviroAtlas is a multi-organization effort led by the US Environmental Protection Agency to develop, host and display a large suite of nation-wide geospatial indicators and indices of ecosystem services. This open access tool allows users to view, analyze, and download a wealth of geospatial data and other resources related to ecosystem goods and services. More than 160 national indicators of ecosystem service supply, demand, and drivers of change provide a framework to inform decisions and policies at multiple spatial scales, educate a range of audiences, and supply data for research. A higher resolution component is also available, providing over 100 data layers for finer-scale analyses for selected communities across the US. The ecosystem goods and services data are organized into seven general ecosystem benefit categories: clean and plentiful water; natural hazard mitigation; food, fuel, and materials; climate stabilization; clean air; biodiversity conservation; and recreation, culture, and aesthetics. Each indicator is described in terms of how it is important to human health or well-being. EnviroAtlas includes data describing existing ecosystem markets for water quality and quantity, biodiversity, wetland mitigation, and carbon credits. This presentation will briefly describe the EnviroAtlas data and tools and how they are being developed and used in ongoing research studies and in decision-making contexts.

  17. The Dynamics of Good and Evil in Leadership: A Study of Shakespeare’s Macbeth and Kant’s Religion within Boundaries of Mere Reason

    Directory of Open Access Journals (Sweden)

    Shahida Khan

    2012-12-01

    Full Text Available Understanding the nuances of good and evil in literary representation has been a trend in the neo-academic circle. Within the framework of Leadership Studies, the present paper locates Shakespeare’s Macbeth (1606 central to the understanding of the concepts of good and evil in leading. The first section critically introduces the concepts of good and evil and their place in leading and Kant’s view on good and evil. The second section gives a short summary of the plot of the play Macbeth. In the third and fourth section I argue that Macbeth is a potential text for an emphatic understanding of good and evil in leading; I highlight the ethical dimension in leading and leadership. It not only argue that the character of Macbeth can be represented as prototypes of understanding the dynamics of righteous and evil leaders, I also suggest that teaching ethical issues of leadership can be strengthened by an analysis of the character of Macbeth. The last section draws parallels with real-life case bringing out the consequences of unethical leading.

  18. 'Providing good and comfortable care by building a bond of trust': nurses views regarding their role in patients' perception of safety in the intensive care unit.

    Science.gov (United States)

    Wassenaar, Annelies; van den Boogaard, Mark; van der Hooft, Truus; Pickkers, Peter; Schoonhoven, Lisette

    2015-11-01

    To describe and understand intensive care unit (ICU) nurses' views regarding their role in ICU patients' perception of safety. Feeling safe is an important issue for ICU patients. Not feeling safe may result in adverse effects including traumatic experiences, having nightmares and feeling depressed. Nursing care plays a major role in patients' perception of safety. However, it is unknown whether ICU nurses are aware of this role. A grounded theory approach following Corbin and Strauss. A total of 13 participants were included in the study following maximum variation sampling, by selecting ICU nurses who differed in gender, age, work experience as registered ICU nurse, and were employed in different IC units. In-depth interviews were performed using open-ended questions guided by a topic list with broad question areas. Data collection and analysis were executed during an iterative process. The core category, building a bond of trust to provide good and comfortable care, arose from four main categories: explaining and informing ICU patients, using patients' family bond, ICU nurses' attitudes and expertise, and creating physical safety. The ICU nurses stated that they were not explicitly aware of ICU patients' perception of safety, but that they strived to provide good and comfortable care, through building a bond of trust with their patients. According to the nurses, a bond of trust is essential for patients to feel safe in the ICU. The importance of feeling safe in ICU patients should be addressed within the education and clinical practice of ICU nurses, to ensure that they become aware of ICU patients' perception of safety. © 2015 John Wiley & Sons Ltd.

  19. Boundary issues

    Science.gov (United States)

    Townsend, Alan R.; Porder, Stephen

    2011-03-01

    What is our point of no return? Caesar proclaimed 'the die is cast' while crossing the Rubicon, but rarely does modern society find so visible a threshold in our continued degradation of ecosystems and the services they provide. Humans have always used their surroundings to make a living— sometimes successfully, sometimes not (Diamond 2005)—and we intuitively know that there are boundaries to our exploitation. But defining these boundaries has been a challenge since Malthus first prophesied that nature would limit the human population (Malthus 1798). In 2009, Rockström and colleagues tried to quantify what the 6.8 billion (and counting) of us could continue to get away with, and what we couldn't (Rockström et al 2009). In selecting ten 'planetary boundaries', the authors contend that a sustainable human enterprise requires treating a number of environmental thresholds as points of no return. They suggest we breach these Rubicons at our own peril, and that we've already crossed three: biodiversity loss, atmospheric CO2, and disruption of the global nitrogen (N) cycle. As they clearly hoped, the very act of setting targets has provoked scientific inquiry about their accuracy, and about the value of hard targets in the first place (Schlesinger 2009). Such debate is a good thing. Despite recent emphasis on the science of human-ecosystem interactions, understanding of our planetary boundaries is still in its infancy, and controversy can speed scientific progress (Engelhardt and Caplan 1987). A few weeks ago in this journal, Carpenter and Bennett (2011) took aim at one of the more controversial boundaries in the Rockström analysis: that for human alteration of the global phosphorus (P) cycle. Rockström's group chose riverine P export as the key indicator, suggesting that humans should not exceed a value that could trigger widespread marine anoxic events—and asserting that we have not yet crossed this threshold. There are defensible reasons for a marine

  20. Good teacher, good tutor

    Directory of Open Access Journals (Sweden)

    Couto LB

    2016-07-01

    Full Text Available Lucélio B Couto, Gustavo S Romão, Reinaldo B Bestetti  Department of Medicine, University of Ribeirão Preto, Ribeirão Preto, Brazil We have read with great interest the paper by Kassab et al, who have essentially shown that good teachers will be good tutors in a problem-based learning (PBL environment. We have been facing great difficulties to select tutors because there has been no tradition in PBL in our region in the preuniversity teaching. Furthermore, the majority of our teachers have been formed in a discipline-based medical curriculum. Therefore, it is reassuring to learn from the work by Kassab et al that subject-matter mastery is the powerful independent predictor of tutoring skills.  View the original paper by Kassab and colleagues.

  1. Modified Mostardi approach with ultra-high-molecular-weight polyethylene tape for total hip arthroplasty provides a good rate of union of osteotomized fragments.

    Science.gov (United States)

    Kuroda, Yutaka; Akiyama, Haruhiko; Nankaku, Manabu; So, Kazutaka; Matsuda, Shuichi

    2015-07-01

    A lateral approach is common in total hip arthroplasty because of the good exposure it provides and its low complication rates. However, a drawback of the procedure is that the abductor mechanism is damaged when the tendinous insertion of the abductor muscle is split. Here, we describe a wafer technique using ultra-high-molecular-weight polyethylene tape for promising reattachment of the abductor mechanism. We retrospectively evaluated 120 consecutive primary total hip arthroplasties performed using a modified Mostardi approach, which involved reattaching the trochanter using either a braided polyester suture (polyester suture group, n = 60) or ultra-high-molecular-weight polyethylene tape (UHMWPE tape group, n = 60). The osteotomized fragment was reattached by inducing bone-to-bone contact using 3-mm-wide tapes that were precisely tied with a double-loop sliding knot in conjunction with a cable gun tensioner. The abductor strength and radiographic union rate were postoperatively assessed at 4 weeks and 6 months, respectively. A statistically significant lower incidence of nonunion and cutout was observed in the UHMWPE group (0 and 5.0 %, respectively) compared to the polyester suture group (8.3 and 15 %, respectively). No differences in abductor strength either preoperatively or at 4 weeks postoperatively were observed between the groups. In radiographically healed patients, abductor strength at 4 weeks post-surgery exceeded preoperative strength. The recovery rate of hip abductor strength was 109.9 ± 34.3 % in union patients and 92.9 ± 23.3 % in nonunion patients, which was statistically significant. The mean Japanese Orthopedic Association hip scores improved from 48.6 to 86.8 in union patients and from 50.3 to 85.9 in nonunion patients at 1 year postoperatively; however, this difference was not significant. The modified Mostardi approach using ultra-high molecular weight polyethylene tape can promote successful union of the osteotomized fragment.

  2. Meals for Good: An innovative community project to provide healthy meals to children in early care and education programs through food bank catering.

    Science.gov (United States)

    Carpenter, Leah R; Smith, Teresa M; Stern, Katherine; Boyd, Lisa Weissenburger-Moser; Rasmussen, Cristy Geno; Schaffer, Kelly; Shuell, Julie; Broussard, Karen; Yaroch, Amy L

    2017-12-01

    Innovative approaches to childhood obesity prevention are warranted in early care and education (ECE) settings, since intervening early among youth is recommended to promote and maintain healthy behaviors. The objective of the Meals for Good pilot was to explore feasibility of implementing a food bank-based catering model to ECE programs to provide more nutritious meals, compared to meals brought from home (a parent-prepared model). In 2014-2015, a 12-month project was implemented by a food bank in central Florida in four privately-owned ECE programs. An explanatory sequential design of a mixed-methods evaluation approach was utilized, including a pre-post menu analysis comparing parent-prepared meals to the catered meals, and stakeholder interviews to determine benefits and barriers. The menu analysis of lunches showed daily reductions in calories, fat, and saturated fat, but an increase in sodium in catered meals when compared to parent-prepared meals. Interviews with ECE directors, teachers, parents, and food bank project staff, identified several benefits of the catered meals, including healthfulness of meals, convenience to parents, and the ECE program's ability to market this meal service. Barriers of the catered meals included the increased cost to parents, transportation and delivery logistics, and change from a 5 to a 2-week menu cycle during summer food service. This pilot demonstrated potential feasibility of a food bank-ECE program partnership, by capitalizing on the food bank's existing facilities and culinary programming, and interest in implementing strategies focused on younger children. The food bank has since leveraged lessons learned and expanded to additional ECE programs.

  3. Meals for Good: An innovative community project to provide healthy meals to children in early care and education programs through food bank catering

    Directory of Open Access Journals (Sweden)

    Leah R. Carpenter

    2017-12-01

    Full Text Available Innovative approaches to childhood obesity prevention are warranted in early care and education (ECE settings, since intervening early among youth is recommended to promote and maintain healthy behaviors. The objective of the Meals for Good pilot was to explore feasibility of implementing a food bank-based catering model to ECE programs to provide more nutritious meals, compared to meals brought from home (a parent-prepared model. In 2014–2015, a 12-month project was implemented by a food bank in central Florida in four privately-owned ECE programs. An explanatory sequential design of a mixed-methods evaluation approach was utilized, including a pre-post menu analysis comparing parent-prepared meals to the catered meals, and stakeholder interviews to determine benefits and barriers. The menu analysis of lunches showed daily reductions in calories, fat, and saturated fat, but an increase in sodium in catered meals when compared to parent-prepared meals. Interviews with ECE directors, teachers, parents, and food bank project staff, identified several benefits of the catered meals, including healthfulness of meals, convenience to parents, and the ECE program's ability to market this meal service. Barriers of the catered meals included the increased cost to parents, transportation and delivery logistics, and change from a 5 to a 2-week menu cycle during summer food service. This pilot demonstrated potential feasibility of a food bank-ECE program partnership, by capitalizing on the food bank's existing facilities and culinary programming, and interest in implementing strategies focused on younger children. The food bank has since leveraged lessons learned and expanded to additional ECE programs.

  4. EarthScope's Plate Boundary Observatory in Alaska: Building on Existing Infrastructure to Provide a Platform for Integrated Research and Hazard-monitoring Efforts

    Science.gov (United States)

    Boyce, E. S.; Bierma, R. M.; Willoughby, H.; Feaux, K.; Mattioli, G. S.; Enders, M.; Busby, R. W.

    2014-12-01

    EarthScope's geodetic component in Alaska, the UNAVCO-operated Plate Boundary Observatory (PBO) network, includes 139 continuous GPS sites and 41 supporting telemetry relays. These are spread across a vast area, from northern AK to the Aleutians. Forty-five of these stations were installed or have been upgraded in cooperation with various partner agencies and currently provide data collection and transmission for more than one group. Leveraging existing infrastructure normally has multiple benefits, such as easier permitting requirements and costs savings through reduced overall construction and maintenance expenses. At some sites, PBO-AK power and communications systems have additional capacity beyond that which is needed for reliable acquisition of GPS data. Where permits allow, such stations could serve as platforms for additional instrumentation or real-time observing needs. With the expansion of the Transportable Array (TA) into Alaska, there is increased interest to leverage existing EarthScope resources for station co-location and telemetry integration. Because of the complexity and difficulty of long-term O&M at PBO sites, however, actual integration of GPS and seismic equipment must be considered on a case-by-case basis. UNAVCO currently operates two integrated GPS/seismic stations in collaboration with the Alaska Earthquake Center, and three with the Alaska Volcano Observatory. By the end of 2014, PBO and TA plan to install another four integrated and/or co-located geodetic and seismic systems. While three of these are designed around existing PBO stations, one will be a completely new TA installation, providing PBO with an opportunity to expand geodetic data collection in Alaska within the limited operations and maintenance phase of the project. We will present some of the design considerations, outcomes, and lessons learned from past and ongoing projects to integrate seismometers and other instrumentation at PBO-Alaska stations. Developing the PBO

  5. The good, the bad, and the ugly: the unnecessarily broad impact of qui tam civil False Claims Act cases on rural health care providers.

    Science.gov (United States)

    Hyer, Andrew M

    2013-01-01

    The civil False Claims Act (FCA) imposes harsh penalties against parties who misappropriate federal funds. The statute's qui tam whistle-blower provisions create strong financial incentives for private individuals to bring and pursue FCA cases against health providers on the government's behalf--even where government attorneys decline to intervene. FCA cases where the government declined to intervene account for less than 2 percent of all recoveries in health care FCA cases. Yet the costs of defending such cases may be very high, especially for rural providers with small operating margins. Federal provider self-referral and anti-kickback laws carve out various exceptions to support the financial viability of rural providers. The FCA, however, contains no such exceptions. Although Department of Justice (DOJ) policy directs officials to take into account community access to care in pursuing FCA cases against rural providers, the ability for private whistleblowers to pursue cases where the government declines to intervene undermines the DOJ's ability to achieve that aim. This Article highlights the liability risks rural providers commonly face under the FCA and argues for amending the FCA to allow a whistleblower claim to proceed against providers serving designated underserved areas only where government authorities intervene in the case.

  6. Endothelial progenitor cells (CD34+KDR+) and monocytes may provide the development of good coronary collaterals despite the vascular risk factors and extensive atherosclerosis.

    Science.gov (United States)

    Kocaman, Sinan Altan; Yalçın, Mehmet Rıdvan; Yağcı, Münci; Sahinarslan, Asife; Türkoğlu, Sedat; Arslan, Uğur; Kurşunluoğlu, Nevruz; Ozdemir, Murat; Timurkaynak, Timur; Cemri, Mustafa; Abacı, Adnan; Boyacı, Bülent; Cengel, Atiye

    2011-06-01

    Endothelial progenitor cells (EPC) have a regenerative role in the vascular system. In this study, we aimed to evaluate simultaneously the effects of EPC and inflammatory cells on the presence and the extent of coronary artery disease (CAD) and the grade of coronary collateral growth in patients with clinical suspicion of CAD. This study has a cross-sectional and observational design. We enrolled 112 eligible patients who underwent coronary angiography consecutively (mean age: 59±9 years). The association of circulating inflammatory cells and EPC (defined by CD34+KDR+ in the lymphocyte and monocyte gate) with the presence, severity and extent of CAD and the degree of collateral growth were investigated. Logistic regression analysis was used to define the predictors of collateral flow. Of 112 patients 30 had normal coronary arteries (NCA, 27%, 55±9 years) and 82 had CAD (73%, 61±8 years). Among the patients with CAD, the percent degree of luminal stenosis was <50% in 12 patients; 50-90% in 35 patients; and ≥90% in the other 35 patients. Circulating inflammatory cells were higher (leukocytes, 7150±1599 vs 8163±1588 mm(-3), p=0.001; neutrophils, 4239±1280 vs 4827±1273 mm(-3), p=0.021; monocytes, 512±111 vs 636±192 mm(-3), p=0.001) and EPCs were lower (0.27±0.15% vs 0.17±0.14%, p<0.001; 21±15 vs 13±12 mm(-3), p=0.004) in CAD group than NCA group. When we investigated the collateral growth in patients having ≥90% stenosis in at least one major coronary artery, we found that the patients with good collateral growth had significantly higher EPC (0.22±0.17% vs 0.10±0.05%, p=0.009; 18±15 vs 7±3 mm(-3), p=0.003) in comparison to patients with poor collateral growth. Presence of EPC was associated with reduced risk for coronary artery disease (OR: 0.934, 95%CI: 0.883-0.998, p=0.018) and was an independent predictor for good collateral growth (OR: 1.295, 95%CI: 1.039-1.615, p=0.022). A sum of CD34+KDR-, CD34+KDR+ and CD34-KDR+ cells (192±98 mm(-3)), and a

  7. Beta-carotene in Golden Rice is as good as beta-carotene in oil at providing vitamin A to children

    Science.gov (United States)

    Vitamin A deficiency (VAD), which can lead to blindness and increased morbidity and mortality, affects 190 million preschool children in developing countries. To combat VAD, Golden Rice (GR) was developed to provide dietary beta-carotene, a pro-vitamin A carotenoid. Understanding the conversion ef...

  8. β-Carotene in Golden Rice is as good as β-carotene in oil at providing vitamin A to children.

    Science.gov (United States)

    Tang, Guangwen; Hu, Yuming; Yin, Shi-an; Wang, Yin; Dallal, Gerard E; Grusak, Michael A; Russell, Robert M

    2012-09-01

    Golden Rice (GR) has been genetically engineered to be rich in β-carotene for use as a source of vitamin A. The objective was to compare the vitamin A value of β-carotene in GR and in spinach with that of pure β-carotene in oil when consumed by children. Children (n = 68; age 6-8 y) were randomly assigned to consume GR or spinach (both grown in a nutrient solution containing 23 atom% ²H₂O) or [²H₈]β-carotene in an oil capsule. The GR and spinach β-carotene were enriched with deuterium (²H) with the highest abundance molecular mass (M) at M(β-C)+²H₁₀. [¹³C₁₀]Retinyl acetate in an oil capsule was administered as a reference dose. Serum samples collected from subjects were analyzed by using gas chromatography electron-capture negative chemical ionization mass spectrometry for the enrichments of labeled retinol: M(retinol)+4 (from [²H₈]β-carotene in oil), M(retinol)+5 (from GR or spinach [²H₁₀]β-carotene), and M(retinol)+10 (from [¹³C₁₀]retinyl acetate). Using the response to the dose of [¹³C₁₀]retinyl acetate (0.5 mg) as a reference, our results (with the use of AUC of molar enrichment at days 1, 3, 7, 14, and 21 after the labeled doses) showed that the conversions of pure β-carotene (0.5 mg), GR β-carotene (0.6 mg), and spinach β-carotene (1.4 mg) to retinol were 2.0, 2.3, and 7.5 to 1 by weight, respectively. The β-carotene in GR is as effective as pure β-carotene in oil and better than that in spinach at providing vitamin A to children. A bowl of ~100 to 150 g cooked GR (50 g dry weight) can provide ~60% of the Chinese Recommended Nutrient Intake of vitamin A for 6-8-y-old children.

  9. Study Protocol: establishing good relationships between patients and health care providers while providing cardiac care. Exploring how patient-clinician engagement contributes to health disparities between indigenous and non-indigenous Australians in South Australia.

    Science.gov (United States)

    Roe, Yvette L; Zeitz, Christopher J; Fredericks, Bronwyn

    2012-11-14

    Studies that compare Indigenous Australian and non-Indigenous patients who experience a cardiac event or chest pain are inconclusive about the reasons for the differences in-hospital and survival rates. The advances in diagnostic accuracy, medication and specialised workforce has contributed to a lower case fatality and lengthen survival rates however this is not evident in the Indigenous Australian population. A possible driver contributing to this disparity may be the impact of patient-clinician interface during key interactions during the health care process. This study will apply an Indigenous framework to describe the interaction between Indigenous patients and clinicians during the continuum of cardiac health care, i.e. from acute admission, secondary and rehabilitative care. Adopting an Indigenous framework is more aligned with Indigenous realities, knowledge, intellects, histories and experiences. A triple layered designed focus group will be employed to discuss patient-clinician engagement. Focus groups will be arranged by geographic clusters i.e. metropolitan and a regional centre. Patient informants will be identified by Indigenous status (i.e. Indigenous and non-Indigenous) and the focus groups will be convened separately. The health care provider focus groups will be convened on an organisational basis i.e. state health providers and Aboriginal Community Controlled Health Services. Yarning will be used as a research method to facilitate discussion. Yarning is in congruence with the oral traditions that are still a reality in day-to-day Indigenous lives. This study is nestled in a larger research program that explores the drivers to the disparity of care and health outcomes for Indigenous and non-Indigenous Australians who experience an acute cardiac admission. A focus on health status, risk factors and clinical interventions may camouflage critical issues within a patient-clinician exchange. This approach may provide a way forward to reduce the

  10. Study Protocol: establishing good relationships between patients and health care providers while providing cardiac care. Exploring how patient-clinician engagement contributes to health disparities between indigenous and non-indigenous Australians in South Australia

    Directory of Open Access Journals (Sweden)

    Roe Yvette L

    2012-11-01

    Full Text Available Abstract Background Studies that compare Indigenous Australian and non-Indigenous patients who experience a cardiac event or chest pain are inconclusive about the reasons for the differences in-hospital and survival rates. The advances in diagnostic accuracy, medication and specialised workforce has contributed to a lower case fatality and lengthen survival rates however this is not evident in the Indigenous Australian population. A possible driver contributing to this disparity may be the impact of patient-clinician interface during key interactions during the health care process. Methods/Design This study will apply an Indigenous framework to describe the interaction between Indigenous patients and clinicians during the continuum of cardiac health care, i.e. from acute admission, secondary and rehabilitative care. Adopting an Indigenous framework is more aligned with Indigenous realities, knowledge, intellects, histories and experiences. A triple layered designed focus group will be employed to discuss patient-clinician engagement. Focus groups will be arranged by geographic clusters i.e. metropolitan and a regional centre. Patient informants will be identified by Indigenous status (i.e. Indigenous and non-Indigenous and the focus groups will be convened separately. The health care provider focus groups will be convened on an organisational basis i.e. state health providers and Aboriginal Community Controlled Health Services. Yarning will be used as a research method to facilitate discussion. Yarning is in congruence with the oral traditions that are still a reality in day-to-day Indigenous lives. Discussion This study is nestled in a larger research program that explores the drivers to the disparity of care and health outcomes for Indigenous and non-Indigenous Australians who experience an acute cardiac admission. A focus on health status, risk factors and clinical interventions may camouflage critical issues within a patient

  11. Breaking Boundaries

    DEFF Research Database (Denmark)

    produce desperate attempts to maintain old or create new differences. Political and sociological research into these complex processes has been mainly guided by structural and normative concerns. Faced with growing evidence about the instability of world order and domestic social structures alike, policy....... As a fundamental human experience, liminality transmits cultural practices, codes, rituals, and meanings in-between aggregate structures and uncertain outcomes. As a methodological tool it is well placed to overcome disciplinary boundaries, which often direct attention to specific structures or sectors of society....... Its capacity to provide explanatory accounts of seemingly unstructured situations provides an opportunity to link experience-based and culture-oriented approaches not only to contemporary problems but also to undertake comparisons across historical periods. From a perspective of liminality...

  12. Ground boundaries

    Science.gov (United States)

    Balluffi, R. W.; Bristowe, P. D.

    The present document is a progress report describing the work accomplished on the study of grain boundaries in Ag, Au, Ni, Si, and Ge. Research was focused on the following four major efforts: study of the atomic structure of grain boundaries by means of x-ray diffraction, transmission electron microscopy and computer modeling; grain boundary migration; short-circuit diffusion along grain boundaries; and development of Thin-Film Deposition/Bonding Apparatus for the manufacture of high purity bicrystals.

  13. International boundary experiences by the United Nations

    Science.gov (United States)

    Kagawa, A.

    2013-12-01

    Over the last few decades, the United Nations (UN) has been approached by Security Council and Member States on international boundary issues. The United Nations regards the adequate delimitation and demarcation of international boundaries as a very important element for the maintenance of peace and security in fragile post-conflict situations, establishment of friendly relationships and cross-border cooperation between States. This paper will present the main principles and framework the United Nations applies to support the process of international boundary delimitation and demarcation activities. The United Nations is involved in international boundary issues following the principle of impartiality and neutrality and its role as mediator. Since international boundary issues are multi-faceted, a range of expertise is required and the United Nations Secretariat is in a good position to provide diverse expertise within the multiple departments. Expertise in different departments ranging from legal, political, technical, administrative and logistical are mobilised in different ways to provide support to Member States depending on their specific needs. This presentation aims to highlight some of the international boundary projects that the United Nations Cartographic Section has been involved in order to provide the technical support to different boundary requirements as each international boundary issue requires specific focus and attention whether it be in preparation, delimitation, demarcation or management. Increasingly, the United Nations is leveraging geospatial technology to facilitate boundary delimitation and demarcation process between Member States. Through the presentation of the various case studies ranging from Iraq - Kuwait, Israel - Lebanon (Blue Line), Eritrea - Ethiopia, Cyprus (Green Line), Cameroon - Nigeria, Sudan - South Sudan, it will illustrate how geospatial technology is increasingly used to carry out the support. In having applied a range

  14. Non Profit Organizations as Providers of Public Goods(Kamu Hizmeti Sağlayıcıları Olarak Kar Amacı Gütmeyen Kuruluşlar

    Directory of Open Access Journals (Sweden)

    Habibe İLHAN

    2013-01-01

    Full Text Available This paper discusses nonprofit organizations as providers of public goods in the context of market failure theory. The paper defines common terms, elaborates on existing theory regarding non-profits and the market, and ties the argument to the current conversation in Public Administration. The author’s argument is that the establishment of non-profit organizations as community solutions to fill the void of market failure is congruent with the communitarian and implicitly Anti Federalist perspective in the Public Administration discourse. Due to urbanization and urban migration related problems, Turkey is facing market failures in the provision of public goods similar to those of the progressive era in the US. As government falls short of providing necessary services, third sector organizations step up to the task. Currently Turkey’s third sector is rather loosely structured and needs to be developed to be able to compensate for the shortcomings of the private and public sectors provision of these goods.

  15. Dislocations, boundaries and slip systems in cube grains of rolled aluminium

    DEFF Research Database (Denmark)

    Wei, Yili; Godfrey, A.; Liu, W.

    2011-01-01

    The relationship between the dislocation content of boundaries and the active slip systems is explored by characterisation of Burgers vectors, dislocation lines and relative densities in 11 boundaries in near-cube grains in 10% rolled aluminium. To provide a good basis for comparison, all...

  16. Ground boundaries

    Energy Technology Data Exchange (ETDEWEB)

    Balluffi, R.W.; Bristowe, P.D.

    1990-01-01

    The present document is a progress report describing the work accomplished on the study of grain boundaries in Ag, Au, Ni, Si, and Ge. Research was focused on the following four major efforts: study of the atomic structure of grain boundaries by means of x-ray diffraction, transmission electron microscopy and computer modeling; grain boundary migration; short-circuit diffusion along grain boundaries; and development of Thin-Film Deposition/Bonding Apparatus for the manufacture of high purity bicrystals. 10 refs., 1 fig.

  17. Negotiating boundaries

    DEFF Research Database (Denmark)

    Aarhus, Rikke; Ballegaard, Stinne Aaløkke

    2010-01-01

    to maintain the order of the home when managing disease and adopting new healthcare technology. In our analysis we relate this boundary work to two continuums of visibility-invisibility and integration-segmentation in disease management. We explore five factors that affect the boundary work: objects......To move treatment successfully from the hospital to that of technology assisted self-care at home, it is vital in the design of such technologies to understand the setting in which the health IT should be used. Based on qualitative studies we find that people engage in elaborate boundary work......, activities, places, character of disease, and collaboration. Furthermore, the processes are explored of how boundary objects move between social worlds pushing and shaping boundaries. From this we discuss design implications for future healthcare technologies for the home....

  18. Boundary Spanning

    DEFF Research Database (Denmark)

    Zølner, Mette

    The paper explores how locals span boundaries between corporate and local levels. The aim is to better comprehend potentialities and challenges when MNCs draws on locals’ culture specific knowledge. The study is based on an in-depth, interpretive case study of boundary spanning by local actors...... in the period of post-acquisition when their organization is being integrated into the acquiring MNC. The paper contributes to the literature on boundary spanning in three ways: First, by illustrating that boundary spanning is performed by numerous organizational actors in a variety of positions in MNCs......, inclusively by locals in subsidiaries. Second, by showing that boundary spanning is ‘situated’ in the sense that its result depends on the kind of knowledge to be transmitted and the attitude of the receivers. A third contribution is methodological. The study illustrates that combining bottom-up grounded...

  19. The early history of boundary violations in psychoanalysis.

    Science.gov (United States)

    Gabbard, G O

    1995-01-01

    The notion of professional boundaries is a relatively recent addition to psychoanalytic practice. Freud and his early disciples indulged in a good deal of trial and error as they evolved psychoanalytic technique. The study of these early boundary violations illuminates the study of the evolution of the concepts of transference and countertransference. The recent publication of the correspondence between Freud and Jung, between Freud and Ferenczi, and between Freud and Jones has provided us with extraordinary insights into the boundary transgressions that occurred in the early days of psychoanalysis. The boundary violations of the analytic pioneers have contributed to the legacy inherited by future generations of analysts. Institutional resistance to addressing these difficulties in contemporary psychoanalytic practice may relate in part to the ambiguities surrounding boundaries in the training analysis itself.

  20. Boundary representation modelling techniques

    CERN Document Server

    2006-01-01

    Provides the most complete presentation of boundary representation solid modelling yet publishedOffers basic reference information for software developers, application developers and users Includes a historical perspective as well as giving a background for modern research.

  1. Is diversity good?

    OpenAIRE

    Bouville, Mathieu

    2007-01-01

    Prominent ethical and policy issues such as affirmative action and female enrollment in science and engineering revolve around the idea that diversity is good. However, even though diversity is an ambiguous concept, a precise definition is seldom provided. We show that diversity may be construed as a factual description, a craving for symmetry, an intrinsic good, an instrumental good, a symptom, or a side effect. These acceptions differ vastly in their nature and properties. The first one can...

  2. Fourier analysis and boundary value problems

    CERN Document Server

    Gonzalez-Velasco, Enrique A

    1996-01-01

    Fourier Analysis and Boundary Value Problems provides a thorough examination of both the theory and applications of partial differential equations and the Fourier and Laplace methods for their solutions. Boundary value problems, including the heat and wave equations, are integrated throughout the book. Written from a historical perspective with extensive biographical coverage of pioneers in the field, the book emphasizes the important role played by partial differential equations in engineering and physics. In addition, the author demonstrates how efforts to deal with these problems have lead to wonderfully significant developments in mathematics.A clear and complete text with more than 500 exercises, Fourier Analysis and Boundary Value Problems is a good introduction and a valuable resource for those in the field.Key Features* Topics are covered from a historical perspective with biographical information on key contributors to the field* The text contains more than 500 exercises* Includes practical applicati...

  3. Grain boundaries

    Energy Technology Data Exchange (ETDEWEB)

    Balluffi, R.W.; Bristowe, P.D.

    1991-01-01

    The present document is a progress report describing the work accomplished to date during the second year of our four-year grant (February 15, 1990--February 14, 1994) to study grain boundaries. The research was focused on the following three major efforts: Study of the atomic structure of grain boundaries by means of x-ray diffraction, transmission electron microscopy and computer modeling; study of short-circuit diffusion along grain boundaries; and development of a Thin-film Deposition/Bonding Apparatus for the manufacture of high purity bicrystals.

  4. Grain boundaries

    Science.gov (United States)

    Balluffi, R. W.; Bristowe, P. D.

    The present document is a progress report describing the work accomplished to date during the second year of our four-year grant (February 15, 1990 to February 14, 1994) to study grain boundaries. The research was focused on the following three major efforts: study of the atomic structure of grain boundaries by means of x-ray diffraction, transmission electron microscopy and computer modeling; study of short-circuit diffusion along grain boundaries; and development of a Thin-film Deposition/Bonding Apparatus for the manufacture of high purity bicrystals.

  5. Good Habits

    Science.gov (United States)

    Ottmer, Sean

    2009-01-01

    South Valley Academy (SVA) believes in and provides structure for personalization. All students have an advisor that can give them the one-on-one attention they deserve. As an advisor, it was the author's job to quickly identify students in need of extra support and coordinate that support with other staff members and parents. SVA also believes in…

  6. Blurring Boundaries

    DEFF Research Database (Denmark)

    Neergaard, Ulla; Nielsen, Ruth

    2010-01-01

    This article builds on the results obtained in the so-called Blurring Boundaries project which was undertaken at the Law Department, Copenhagen Business School, in the period from 2007 to 2009. It looks at the sustainability of the Danish welfare state in an EU law context and on the integration...... of welfare functions into EU law both from an internal market law and a constitutional law perspective. The main problem areas covered by the Blurring Boundaries project were studied in sub-projects on: 1) Internal market law and welfare services; 2) Fundamental rights and non-discrimination law aspects......; and 3) Services of general interest. In the Blurring Boundaries project, three aspects of the European Social Model have been particularly highlighted: the constitutionalisation of the European Social Model, its multi-level legal character, and the clash between market access justice at EU level...

  7. Doing Good

    DEFF Research Database (Denmark)

    Jørgensen, Frances; Sluhan, Anne

    activities can be implemented to actively influence organizational commitment. We address this gap through a longitudinal qualitative study in a Danish family-owned firm, where we model how initiation of and participation in philanthropic activities encourages organizational commitment through...... an organizational identification process. Theoretically, we contribute to the literature by providing an in-depth processual perspective on how engagement in philanthropic activities facilitates value alignment between employees and their organization, and therein fosters organizational commitment. Practically...

  8. Goodness: Attributive and predicative

    Directory of Open Access Journals (Sweden)

    Michael-John Turp

    2016-09-01

    Full Text Available There is little consensus concerning the truth or reference conditions for evaluative terms such as “good” and “bad.” In his paper “Good and Evil,” Geach (1956 proposed that we distinguish between attributive and predicative uses of “good.” Foot (2001, Thomson (2008, Kraut (2011, and others have put this distinction to use when discussing basic questions of value theory. In §§1-2, I outline Geach’s proposal and argue that attributive evaluation depends on a prior grasp of the kind of thing that is evaluated, which is another way of saying a prior grasp of a thing’s nature. In §§3-4, I discuss the evaluation of artifacts, which provide the clearest examples of attributive evaluation. This allows me to address a series of problems apparently facing the idea of attributive goodness. In §5, I consider the neo-Aristotelian idea that we can extend attributive accounts of goodness to human lives, and I pay attention to Foot’s account of natural goodness. This leads me to consider the goodness of human life as a whole in §6. At this point. I depart from Geach’s approach and argue that questions of attributive goodness finally give rise to questions of predicative or absolute goodness.

  9. Albedo Boundary

    Science.gov (United States)

    2003-01-01

    MGS MOC Release No. MOC2-510, 11 October 2003The sharp, nearly straight line that runs diagonally across the center of this April 2003 Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image is an albedo boundary. Albedois a term that refers to reflectance of sunlight. A surface with a low albedo is one that appears dark because it reflects less light than a high albedo (bright) surface. On Mars, albedo boundaries occur between two materials of differing texture, particle size, or composition, or some combination of these three factors. The boundary shown here is remarkable because it is so sharp and straight. This is caused by wind. Most likely, the entire surface was once covered with the lower-albedo (darker) material that is now seen in the upper half of the image. At some later time, wind stripped away this darker material from the surfaces in the lower half of the image. The difference in albedo here might be related to composition, and possibly particle size. This picture is located near the southwest rim of Schiaparelli Basin at 5.5oS, 345.9oW. The picture covers an area 3 km (1.9 mi) wide and is illuminated by sunlight from the left.

  10. boundary dissipation

    Directory of Open Access Journals (Sweden)

    Mehmet Camurdan

    1998-01-01

    are coupled by appropriate trace operators. This overall model differs from those previously studied in the literature in that the elastic chamber floor is here more realistically modeled by a hyperbolic Kirchoff equation, rather than by a parabolic Euler-Bernoulli equation with Kelvin-Voight structural damping, as in past literature. Thus, the hyperbolic/parabolic coupled system of past literature is replaced here by a hyperbolic/hyperbolic coupled model. The main result of this paper is a uniform stabilization of the coupled PDE system by a (physically appealing boundary dissipation.

  11. The Bottom Boundary Layer.

    Science.gov (United States)

    Trowbridge, John H; Lentz, Steven J

    2018-01-03

    The oceanic bottom boundary layer extracts energy and momentum from the overlying flow, mediates the fate of near-bottom substances, and generates bedforms that retard the flow and affect benthic processes. The bottom boundary layer is forced by winds, waves, tides, and buoyancy and is influenced by surface waves, internal waves, and stratification by heat, salt, and suspended sediments. This review focuses on the coastal ocean. The main points are that (a) classical turbulence concepts and modern turbulence parameterizations provide accurate representations of the structure and turbulent fluxes under conditions in which the underlying assumptions hold, (b) modern sensors and analyses enable high-quality direct or near-direct measurements of the turbulent fluxes and dissipation rates, and (c) the remaining challenges include the interaction of waves and currents with the erodible seabed, the impact of layer-scale two- and three-dimensional instabilities, and the role of the bottom boundary layer in shelf-slope exchange.

  12. Goods Transport Modelling, Vol 1

    DEFF Research Database (Denmark)

    Petersen, Morten Steen (red.); Kristiansen, Jørgen

    The report is a study of data requirements and methodologies for goods transport. The study is intended to provide the basis for general discussion about the application of goods transport models in Denmark. The report provides an overview of different types of models and data availability....

  13. From Goods to Solutions

    DEFF Research Database (Denmark)

    Chakkol, Mehmet; Johnson, Mark; Raja, Jawwad

    2014-01-01

    Purpose – This paper aims to adopt service-dominant logic (SDL) to empirically explore network configurations resulting from the provision of goods, goods and services, and solutions. Design/methodology/approach – This paper uses a single, in-depth, exploratory case study in a truck manufacturer...... different value propositions and the resulting network configurations are discussed. In so doing, evidence is provided of a more complex, tetradic network configuration for solutions, with varying degrees of interplay between actors in the flow of operand and operant resources to create value....... and its supply network. An abductive approach is adopted. In total, 54 semi-structured interviews were conducted. Findings – Three value propositions are clearly discernible within the truck provider. These range from a truck to a “solution”. These propositions have different supply network configurations...

  14. Millennial Values and Boundaries in the Classroom

    Science.gov (United States)

    Espinoza, Chip

    2012-01-01

    Students' relationships with authority and information are changing rapidly, and this presents a new set of interpersonal boundary challenges for faculty. The topic of setting boundaries often conjures up thoughts of how to protect oneself. The intent of this chapter is to explore how good rapport between teacher and student can be developed and…

  15. Technology for Boundaries

    DEFF Research Database (Denmark)

    Bødker, Susanne; Kristensen, Jannie Friis; Nielsen, Christina

    2003-01-01

    This paper presents a study of an organisation, which is undergoing a process transforming organisational and technological boundaries. In particular, we shall look at three kinds of boundaries: the work to maintain and change the boundary between the organisation and its customers; boundaries.......After analysing the history and the current boundary work, the paper will propose new technological support for boundary work. In particular the paper will suggest means of supporting boundaries when these are productive and for changing boundaries when this seems more appropriate. In total, flexible technologies...... seem a core issue when dealing with technology for boundaries....

  16. Durable goods and poverty measurement

    OpenAIRE

    Amendola, Nicola; Vecchi, Giovanni

    2014-01-01

    The paper focuses on durable goods and their role in the measurement of living standards. The paper reviews the theoretical underpinnings of the methods available to estimate the value of the services flowing from consumer durable goods. It also provides a unified framework that encompasses the acquisition approach, the rental equivalent approach, and the user cost approach. The pros and c...

  17. Asymptotic analysis and boundary layers

    CERN Document Server

    Cousteix, Jean

    2007-01-01

    This book presents a new method of asymptotic analysis of boundary-layer problems, the Successive Complementary Expansion Method (SCEM). The first part is devoted to a general comprehensive presentation of the tools of asymptotic analysis. It gives the keys to understand a boundary-layer problem and explains the methods to construct an approximation. The second part is devoted to SCEM and its applications in fluid mechanics, including external and internal flows. The advantages of SCEM are discussed in comparison with the standard Method of Matched Asymptotic Expansions. In particular, for the first time, the theory of Interactive Boundary Layer is fully justified. With its chapter summaries, detailed derivations of results, discussed examples and fully worked out problems and solutions, the book is self-contained. It is written on a mathematical level accessible to graduate and post-graduate students of engineering and physics with a good knowledge in fluid mechanics. Researchers and practitioners will estee...

  18. Practical boundary surveying legal and technical principles

    CERN Document Server

    Gay, Paul

    2015-01-01

    This guide to boundary surveying provides landowners, land surveyors, students and others with the necessary foundation to understand boundary surveying techniques and the common legal issues that govern boundary establishment.  Boundary surveying is sometimes mistakenly considered a strictly technical discipline with simple and straightforward technical solutions.  In reality, boundary establishment is often a difficult and complex matter, requiring years of experience and a thorough understanding of boundary law.  This book helps readers to understand the challenges often encountered by boundary surveyors and some of the available solutions. Using only simple and logically explained mathematics, the principles and practice of boundary surveying are demystified for those without prior experience, and the focused coverage of pivotal issues such as easements and setting lot corners will aid even licensed practitioners in untangling thorny cases. Practical advice on using both basic and advanced instruments ...

  19. Good Education, the Good Teacher, and a Practical Art of Living a Good Life: A Catholic Perspective

    Science.gov (United States)

    Hermans, Chris

    2017-01-01

    What is good education? We value education for reasons connected to the good provided by education in society. This good is connected to be the pedagogical aim of education. This article distinguishes five criteria for good education based on the concept of "Bildung". Next, these five criteria are used to develop the idea of the good…

  20. Grain boundaries: Progress report

    Energy Technology Data Exchange (ETDEWEB)

    Balluffi, R.W.; Bristowe, P.D.

    1988-02-01

    Quantitative measurements of grain boundary structure factors using x-ray diffraction have been performed on low angle (001) twist boundaries in gold. Also, a computer atomistic simulation program is being implemented to examine the equilibrium properties of a series of boundaries in gold. Simulation of boundaries at room temperature have been performed. Electron microscopy of grain boundary melting in aluminum was also performed. Results indicated an absence of melting. (CBS)

  1. Transcending Organizational Boundaries

    DEFF Research Database (Denmark)

    Kringelum, Louise Tina Brøns

    This thesis explores how processes of business model innovation can unfold in a port authority by transcending organizational boundaries through inter-organizational collaboration. The findings contribute to two fields of academic inquiry: the study of business model innovation and the study of how...... by applying the engaged scholarship approach, thereby providing a methodological contribution to both port and business model research. Emphasizing the interplay of intra- and inter-organizational business model innovation, the thesis adds insight into the roles of port authorities, business model trends...

  2. Flow stress anisotropy caused by geometrically necessary boundaries

    DEFF Research Database (Denmark)

    Hansen, N.; Juul Jensen, D.

    1992-01-01

    The microstructural anisotropy of deformed metal is related to the formation of geometrically necessary boundaries such as dense dislocation walls and microbands. These boundaries have a macroscopic orientation with respect to the sample axes and they can resist slip due to a high concentration o...... necessary boundaries. For different macroscopic arrangements of such boundaries, the model predictions are in good qualitative and quantitative agreement with experiments....

  3. Do Cochrane reviews provide a good model for social science?

    DEFF Research Database (Denmark)

    Konnerup, Merete; Kongsted, Hans Christian

    2012-01-01

    Formalised research synthesis to underpin evidence-based policy and practice has become increasingly important in areas of public policy. In this paper we discuss whether the Cochrane standard for systematic reviews of healthcare interventions is appropriate for social research. We examine...... to conclude that the majority of reviews appears limited to considering randomised controlled trials only. Because recent studies have delineated conditions for observational studies in social research to produce valid evidence, we argue that an inclusive approach is essential for truly evidence-based policy...... and practice in regard to social interventions....

  4. Good intentions: providing students with skills to avoid accidental plagiarism.

    Science.gov (United States)

    Zafron, Michelle L

    2012-01-01

    This article explores one librarian's experience with creating and implementing a plagiarism seminar as part of the library liaison program to the School of Public Health and Health Professions at the University at Buffalo. The changes and evolution of the seminar over several iterations are described. This article also examines student perceptions, misperceptions, and reactions to the plagiarism workshop.

  5. Trade in goods

    DEFF Research Database (Denmark)

    Sørensen, Karsten Engsig

    2006-01-01

    An analysis of the rules governing trade in goods under the GATT agreement and the Agreement on Safeguards......An analysis of the rules governing trade in goods under the GATT agreement and the Agreement on Safeguards...

  6. Pelagic habitat: exploring the concept of good environmental status

    DEFF Research Database (Denmark)

    Dickey-Collas, Mark; McQuatters-Gollop, Abigail; Bresnan, Eileen

    2017-01-01

    Marine environmental legislation is increasingly expressing a need to consider the quality of pelagic habitats. This paper uses the European Union marine strategy framework to explore the concept of good environmental status (GES) of pelagic habitat with the aim to build a wider understanding...... of the issue. Pelagic ecosystems have static, persistent and ephemeral features, with manageable human activities primarily impacting the persistent features. The paper explores defining the meaning of “good”, setting boundaries to assess pelagic habitat and the challenges of considering habitat biodiversity...... in a moving medium. It concludes that for pelagic habitats to be in GES and able to provide goods and services to humans, three conditions should be met: (i) all species present under current environmental conditions should be able to find the pelagic habitats essential to close their life cycles; (ii...

  7. Good Concrete Activity Is Good Mental Activity

    Science.gov (United States)

    McDonough, Andrea

    2016-01-01

    Early years mathematics classrooms can be colourful, exciting, and challenging places of learning. Andrea McDonough and fellow teachers have noticed that some students make good decisions about using materials to assist their problem solving, but this is not always the case. These experiences lead her to ask the following questions: (1) Are…

  8. Quantitative Characterization of Boundary Roughness in Metals

    DEFF Research Database (Denmark)

    Sun, Jun

    The boundary migration during recrystallization is by nature a heterogeneous process and local structural variations form on recrystallization boundaries, as revealed from modern techniques such as synchrotron X-rays and advanced electron microscopy. The local structural variations, in the form...... of protrusions and retrusions, can provide a dragging/driving force due to the local boundary curvature and affect the further migration of recrystallization boundaries through the deformed matrix. In order to develop new understandings and models for boundary migration that take the heterogeneous local...... structural aspects into account, a detailed characterization is essential of partly recrystallized microstructures focusing on the local shapes of the boundaries, in particular on whether protrusions and retrusions are formed or not. Quantification of the “amount” of boundary roughness in the form...

  9. Boundary control of fluid flow through porous media

    DEFF Research Database (Denmark)

    Hasan, Agus; Foss, Bjarne; Sagatun, Svein Ivar

    2010-01-01

    The flow of fluids through porous media can be described by the Boussinesq’s equation with mixed boundary conditions; a Neumann’s boundary condition and a nonlinear boundary condition. The nonlinear boundary condition provides a means to control the fluid flow through porous media. In this paper...

  10. State Agency Administrative Boundaries

    Data.gov (United States)

    Kansas Data Access and Support Center — This database comprises 28 State agency boundaries and point of contact. The Kansas Geological Survey collected legal descriptions of the boundaries for various...

  11. Allegheny County Municipal Boundaries

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset demarcates the municipal boundaries in Allegheny County. Data was created to portray the boundaries of the 130 Municipalities in Allegheny County the...

  12. HUD GIS Boundary Files

    Data.gov (United States)

    Department of Housing and Urban Development — The HUD GIS Boundary Files are intended to supplement boundary files available from the U.S. Census Bureau. The files are for community planners interested in...

  13. Political State Boundary (National)

    Data.gov (United States)

    Department of Transportation — State boundaries with political limit - boundaries extending into the ocean (NTAD). The TIGER/Line Files are shapefiles and related database files (.dbf) that are an...

  14. Social Entrepreneurship: Definition and Boundaries

    Directory of Open Access Journals (Sweden)

    Samer Abu-Saifan

    2012-02-01

    Full Text Available While individuals may be publicly recognized as social entrepreneurs for their contributions to improve the welfare of communities, the field of social entrepreneurship continues to struggle to gain academic legitimacy. Social entrepreneurship is a term in search of a good definition. The current use of the term seems vague and limitless; it needs boundaries to demarcate its function. The lack of a common definition hinders research and raises questions about which social or profit-making activities fall within the spectrum of social entrepreneurship. To become an important stream in the entrepreneurship literature, social entrepreneurship needs to be properly defined and it requires a theoretical framework that links it to the theory of entrepreneurship. This article builds on the literature to define social entrepreneurship, discusses the boundaries of socially-oriented entrepreneurial activities, and positions the social entrepreneur in the spectrum of entrepreneurship.

  15. Plane boundary effects on characteristics of propeller jets

    Science.gov (United States)

    Wei, Maoxing; Chiew, Yee-Meng; Hsieh, Shih-Chun

    2017-10-01

    The flow properties of a propeller jet in the presence of a plane bed boundary were investigated using the particle image velocimetry technique. Three clearance heights, Z b = 2 D p, D p, and 0.5 D p, where D p = propeller diameter, were used to examine boundary effects on the development of the jet. In each case, the mean flow properties and turbulence characteristics were measured in a larger field of view than those used in past studies. Both the streamwise and transverse flow fields were measured to obtain the three-dimensional characteristics of the propeller jet. Similar to a confined offset jet, the propeller jet also exhibits a wall attachment behavior when it is placed near a plane boundary. As a result, in contrast to its unconfined counterpart, the confined propeller jet features three regions, namely the free jet, impingement and wall jet regions. The study shows that the extent of each region varies under different clearance heights. The development of the mean flow and turbulence characteristics associated with varying clearance heights are compared to illustrate boundary effects in these regions. In the impingement region, the measured transverse flow fields provide new insights on the lateral motions induced by the impingement of the swirling jet. In the wall jet region, observations reveal that the jet behaves like a typical three-dimensional wall jet and its axial velocity profiles show good agreement with the classical wall jet similarity function.

  16. On good ETOL forms

    DEFF Research Database (Denmark)

    Skyum, Sven

    1978-01-01

    This paper continues the study of ETOL forms and good EOL forms done by Maurer, Salomaa and Wood. It is proven that binary very complete ETOL forms exist, good synchronized ETOL forms exist and that no propagating or synchronized ETOL form can be very complete.......This paper continues the study of ETOL forms and good EOL forms done by Maurer, Salomaa and Wood. It is proven that binary very complete ETOL forms exist, good synchronized ETOL forms exist and that no propagating or synchronized ETOL form can be very complete....

  17. County and Parish Boundaries - COUNTY_GOVERNMENT_BOUNDARIES_IDHS_IN: Governmental Boundaries Maintained by County Agencies in Indiana (Indiana Department of Homeland Security, Polygon feature class)

    Data.gov (United States)

    NSGIC State | GIS Inventory — COUNTY_GOVERNMENT_BOUNDARIES_IDHS_IN is a polygon feature class that contains governmental boundaries maintained by county agencies in Indiana, provided by personnel...

  18. What Are Good Universities?

    Science.gov (United States)

    Connell, Raewyn

    2016-01-01

    This paper considers how we can arrive at a concept of the good university. It begins with ideas expressed by Australian Vice-Chancellors and in the "league tables" for universities, which essentially reproduce existing privilege. It then considers definitions of the good university via wish lists, classic texts, horror lists, structural…

  19. ESO for GOODS' sake

    OpenAIRE

    Renzini, A.; Cesarsky, C.; Cristiani, S.; da Costa, L.; Fosbury, R.; Hook, R.; Leibundgut, B.; Rosati, P.; Vandame, B.

    2002-01-01

    Currently public ESO data sets pertinent to the CDFS/GOODS field are briefly illustrated along with an indication on how to get access to them. Future ESO plans for complementing the GOODS database with optical/IR imaging and optical spectroscopy are also described.

  20. Good Mental Health

    Science.gov (United States)

    ... Mental Health This information in Spanish ( en español ) Good mental health Nutrition and mental health Exercise and mental health ... a friend. Return to top More information on Good mental health Read more from womenshealth.gov Action Steps for ...

  1. Whip it Good

    DEFF Research Database (Denmark)

    Holm, Henrik Ole

    2016-01-01

    Analyse af Jeannette Ehlers' værk "Whip it Good" med betragtninger over et paradigmeskft fra et Vestlig til et ikke-vestligt.......Analyse af Jeannette Ehlers' værk "Whip it Good" med betragtninger over et paradigmeskft fra et Vestlig til et ikke-vestligt....

  2. A Pretty Good Fit

    Science.gov (United States)

    Erickson, Tim

    2008-01-01

    We often look for a best-fit function to a set of data. This article describes how a "pretty good" fit might be better than a "best" fit when it comes to promoting conceptual understanding of functions. In a pretty good fit, students design the function themselves rather than choosing it from a menu; they use appropriate variable names; and they…

  3. HDL: The "Good" Cholesterol

    Science.gov (United States)

    ... raise your HDL level, you need to eat good fats instead of bad fats. This means limiting saturated fats, which include full-fat milk and cheese, high-fat meats like sausage and bacon, and foods ... foods like baked goods. Instead, eat unsaturated fats, which are found in ...

  4. Repeated judgment sampling: Boundaries

    Directory of Open Access Journals (Sweden)

    Johannes Muller-Trede

    2011-06-01

    Full Text Available This paper investigates the boundaries of the recent result that eliciting more than one estimate from the same person and averaging these can lead to accuracy gains in judgment tasks. It first examines its generality, analysing whether the kind of question being asked has an effect on the size of potential gains. Experimental results show that the question type matters. Previous results reporting potential accuracy gains are reproduced for year-estimation questions, and extended to questions about percentage shares. On the other hand, no gains are found for general numerical questions. The second part of the paper tests repeated judgment sampling's practical applicability by asking judges to provide a third and final answer on the basis of their first two estimates. In an experiment, the majority of judges do not consistently average their first two answers. As a result, they do not realise the potential accuracy gains from averaging.

  5. Superfluid Boundary Layer.

    Science.gov (United States)

    Stagg, G W; Parker, N G; Barenghi, C F

    2017-03-31

    We model the superfluid flow of liquid helium over the rough surface of a wire (used to experimentally generate turbulence) profiled by atomic force microscopy. Numerical simulations of the Gross-Pitaevskii equation reveal that the sharpest features in the surface induce vortex nucleation both intrinsically (due to the raised local fluid velocity) and extrinsically (providing pinning sites to vortex lines aligned with the flow). Vortex interactions and reconnections contribute to form a dense turbulent layer of vortices with a nonclassical average velocity profile which continually sheds small vortex rings into the bulk. We characterize this layer for various imposed flows. As boundary layers conventionally arise from viscous forces, this result opens up new insight into the nature of superflows.

  6. The new boundaries of the "boundaryless" company.

    Science.gov (United States)

    Hirschhorn, L; Gilmore, T

    1992-01-01

    In an economy founded on innovation and change, one of the premier challenges of management is to design more flexible organizations. For many executives, a single metaphor has come to embody this managerial challenge and to capture the kind of organization they want to create: the "corporation without boundaries." According to Larry Hirschhorn and Thomas Gilmore of the Wharton Center for Applied Research, managers are right to break down the boundaries that make organizations rigid and unresponsive. But they are wrong if they think that doing so eliminates the need for boundaries altogether. Once the traditional boundaries of hierarchy, function, and geography disappear, a new set of boundaries becomes important. These new boundaries are more psychological than organizational. They aren't drawn on a company's organizational chart but in the minds of its managers and employees. And instead of being reflected in a company's structure, they must be "enacted" over and over again in a manager's relationships with bosses, subordinates, and peers. In this article, Hirschhorn and Gilmore provide a guide to the boundaries that matter in the "boundaryless" company. They explain how these new boundaries are essential for both managers and employees in coping with the demands of flexible work. They describe the typical mistakes that managers make in their boundary relationships. And they show how executives can become effective boundary managers by paying attention to a source of data they have often overlooked in the past: their own gut feelings about work and the people with whom they do it.

  7. The boundary-scan handbook

    CERN Document Server

    Parker, Kenneth P

    2016-01-01

    Aimed at electronics industry professionals, this 4th edition of the Boundary Scan Handbook describes recent changes to the IEEE1149.1 Standard Test Access Port and Boundary-Scan Architecture. This updated edition features new chapters on the possible effects of the changes on the work of the practicing test engineers and the new 1149.8.1 standard. Anyone needing to understand the basics of boundary scan and its practical industrial implementation will need this book. Provides an overview of the recent changes to the 1149.1 standard and the effect of the changes on the work of test engineers;   Explains the new IEEE 1149.8.1 subsidiary standard and applications;   Describes the latest updates on the supplementary IEEE testing standards. In particular, addresses: IEEE Std 1149.1                      Digital Boundary-Scan IEEE Std 1149.4                      Analog Boundary-Scan IEEE Std 1149.6                      Advanced I/O Testing IEEE Std 1149.8.1           �...

  8. Medicare Provider Data - Hospice Providers

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Hospice Utilization and Payment Public Use File provides information on services provided to Medicare beneficiaries by hospice providers. The Hospice PUF...

  9. Assessing housing growth when census boundaries change

    Science.gov (United States)

    Alexandra D. Syphard; Susan I. Stewart; Jason McKeefry; Roger B. Hammer; Jeremy S. Fried; Sherry Holcomb; Volker C. Radeloff

    2009-01-01

    The US Census provides the primary source of spatially explicit social data, but changing block boundaries complicate analyses of housing growth over time. We compared procedures for reconciling housing density data between 1990 and 2000 census block boundaries in order to assess the sensitivity of analytical methods to estimates of housing growth in Oregon. Estimates...

  10. Hierarchies of DIFFdifference boundary value problems II ...

    African Journals Online (AJOL)

    This paper provides an illustration of the work done in [14] where a hierarchy of difference boundary value problems was developed. In particular, we studied the effect of applying a Crum-type transformation to a weighted second order difference equation with general -dependent boundary conditions at the end points, ...

  11. 19 CFR 102.12 - Fungible goods.

    Science.gov (United States)

    2010-04-01

    ... determined on the basis of an inventory management method provided under the appendix to part 181 of the... RULES OF ORIGIN Rules of Origin § 102.12 Fungible goods. When fungible goods of different countries of origin are commingled the country of origin of the goods: (a) Is the countries of origin of those...

  12. A Good Teacher

    Directory of Open Access Journals (Sweden)

    Patrick J. Lewis

    2008-05-01

    Full Text Available The work is in a documentary film format utilizing digital video through computer software that presents the interviewees' responses to two questions juxtaposed with images and statements of "a good teacher" from popular culture. The two questions are: 1. Can you recall a primary or elementary teacher whom you had that you thought was a good teacher? 2. What was it about her/him that made you think she/he was a good teacher? However, in some of the interviews the interviewer utilizes other questions and/or prompts in order to encourage the participant to expand or elaborate within her/his story. Like TRINH T. Minh-ha (1992 "storytelling is an ongoing field of exploration in all of my works" (p.144. Through the interviews interpretive themes emerge around the notion of who is/what makes a good teacher. Some of the themes suggest personal characteristics such as "kindness," "patient," "passionate," "calm," "respect," "firm," "understanding" and "encouraging" that entwine with an idea of "personal connection" with the teacher. Other themes suggest shared experience and teaching attributes. These themes are presented with the images of good teachers from popular films. The notion of "good" and "good teacher" are purposefully not demarcated or defined by the interviewer or asked of the participants. This term is implicitly defined in the stories shared by each of the participants and the stories of the teacher films. URN: urn:nbn:de:0114-fqs0802415

  13. Transportation of hazardous goods

    CERN Multimedia

    TS Department

    2008-01-01

    A general reminder: any transportation of hazardous goods by road is subject to the European ADR rules. The goods concerned are essentially the following: Explosive substances and objects; Gases (including aerosols and non-flammable gases such as helium and nitrogen); Flammable substances and liquids (inks, paints, resins, petroleum products, alcohols, acetone, thinners); Toxic substances (acids, thinners); Radioactive substances; Corrosive substances (paints, acids, caustic products, disinfectants, electrical batteries). Any requests for the transport of hazardous goods must be executed in compliance with the instructions given at this URL: http://ts-dep.web.cern.ch/ts-dep/groups/he/HH/adr.pdf Heavy Handling Section TS-HE-HH 73793 - 160364

  14. Customs control of goods

    Directory of Open Access Journals (Sweden)

    Mentor Gashi

    2015-11-01

    Full Text Available Customs control, is regulated by law in different countries. Different countries define through the law, the control of goods.. Main purpose of this paper is to analyze two types of customs controls, and their effect in reducing avoidance of duty or tax evasion which may be caused by the import of goods of certain companies. For this reason we researched which model is implemented in developing countries and what results were reached through questionnaires. In this sense the next research question, consists in defining the moment of customs control pre or post-clearance control of goods.

  15. TRANSPORT OF COUNTERFEIT GOODS

    Directory of Open Access Journals (Sweden)

    Dagmar Babčanová

    2014-09-01

    Full Text Available The paper is focused on a current problem of transport of counterfeit goods in the European Union. Counterfeiting has a strong influence on the distribution organizations worldwide because most of counterfeit goods threaten the health and safety of consumers. Counterfeiting is a serious problem in the world economy today. The purpose of this paper is to point out the danger of counterfeiting in connection with the transport of Intellectual Property (IP rights - infringing goods. Background of the paper’s content is based on secondary data research of publicly available sources - international statistics and world reports.

  16. Characterizations of boundary pluripolar hulls

    NARCIS (Netherlands)

    Djire, I.K.; Wiegerinck, J.

    2016-01-01

    We present some basic properties of the so-called boundary relative extremal function and discuss boundary pluripolar sets and boundary pluripolar hulls. We show that for B-regular domains the boundary pluripolar hull is always trivial on the boundary of the domain and present a “boundary version”

  17. Optimal Provision of Public Goods

    DEFF Research Database (Denmark)

    Kreiner, Claus Thustrup; Verdelin, Nicolaj

    2009-01-01

    There currently exist two competing approaches in the literature on the optimal provision of public goods. The standard approach highlights the importance of distortionary taxation and distributional concerns. The new approach neutralizes distributional concerns by adjusting the non-linear income...... tax, and finds that this reinvigorates the simple Samuelson rule when preferences are separable in goods and leisure. We provide a synthesis by demonstrating that both approaches derive from the same basic formula. We further develop the new approach by deriving a general, intuitive formula...

  18. Grain Boundary Complexions

    Science.gov (United States)

    2014-05-01

    deter- mine bulk materials behavior and properties such as superplasticity, creep, fatigue, corrosion , strength and conductivity [2]. Grain boundary...interface (i.e. lattice mismatch accommodated by interface dislocations ), wetting transitions will not occur. A wetting transition is possible in the case...melting only starts around dislocations at low- angle grain boundaries; the grain boundary structure con- sists of isolated liquid pools separated by

  19. Stable Boundary Layer Issues

    OpenAIRE

    Steeneveld, G.J.

    2012-01-01

    Understanding and prediction of the stable atmospheric boundary layer is a challenging task. Many physical processes are relevant in the stable boundary layer, i.e. turbulence, radiation, land surface coupling, orographic turbulent and gravity wave drag, and land surface heterogeneity. The development of robust stable boundary layer parameterizations for use in NWP and climate models is hampered by the multiplicity of processes and their unknown interactions. As a result, these models suffer ...

  20. Guide to Good Posture

    Science.gov (United States)

    ... when you are walking, running, or bending over to pick up something. Static posture is how you ... are sitting, standing, or sleeping. It is important to make sure that you have good dynamic and ...

  1. Oxygen boundary crossing probabilities.

    Science.gov (United States)

    Busch, N A; Silver, I A

    1987-01-01

    The probability that an oxygen particle will reach a time dependent boundary is required in oxygen transport studies involving solution methods based on probability considerations. A Volterra integral equation is presented, the solution of which gives directly the boundary crossing probability density function. The boundary crossing probability is the probability that the oxygen particle will reach a boundary within a specified time interval. When the motion of the oxygen particle may be described as strongly Markovian, then the Volterra integral equation can be rewritten as a generalized Abel equation, the solution of which has been widely studied.

  2. Landfills - LANDFILL_BOUNDARIES_IDEM_IN: Waste Site Boundaries in Indiana (Indiana Department of Environmental Management, Polygon Shapefile)

    Data.gov (United States)

    NSGIC State | GIS Inventory — LANDFILL_BOUNDARIES_IDEM_IN.SHP is a polygon shapefile that contains boundaries for open dump sites, approved landfills, and permitted landfills in Indiana, provided...

  3. Equilibrium composition of interphase boundaries

    Energy Technology Data Exchange (ETDEWEB)

    Wynblatt, P.

    1990-01-01

    Two modeling approaches have been used to investigate segregation effects at interphase boundaries. The first approach is based on the nearest neighbor bond model, used in conjunction with the regular solution approximation, and is an extension of an earlier framework developed to address segregation phenomena at free surfaces. In order to model a semicoherent interphase boundary, we have employed a second modeling approach, based on Monte Carol simulation, in conjunction with the embedded atom method (EAM). The EAM is a powerful new method for describing interatomic interactions in metallic systems. It includes certain many-body interactions that depend on the local environment of an atom. The Monte Carol approach has been applied to semicoherent interphase boundaries in Cu-Ag-Au alloys dilute in Au. These alloys consist of coexisting Cu-rich and Ag-rich phases, which differ in lattice constant by about 12%, such that good matching across in interface occurs when nine structural units of the Cu-rich phase are opposed to eight structural units of the Ag-rich phase. Thus far, interfaces with two different orientations have been studied: {l brace}001{r brace}-Cu//{l brace}001{r brace}-Ag, {l angle}110{r angle}-Cu//{l angle}110{r angle}-Ag; and {l brace}111{r brace}-Cu//{l brace}111{r brace}-Ag, {l angle}110{r angle}-Cu//{l angle}110{r angle}-Ag. These two interfaces will be referred to as the (001) and (111) interphase boundaries, for short. 18 refs.

  4. Stable Boundary Layer Issues

    NARCIS (Netherlands)

    Steeneveld, G.J.

    2012-01-01

    Understanding and prediction of the stable atmospheric boundary layer is a challenging task. Many physical processes are relevant in the stable boundary layer, i.e. turbulence, radiation, land surface coupling, orographic turbulent and gravity wave drag, and land surface heterogeneity. The

  5. Codes of Good Governance

    DEFF Research Database (Denmark)

    Beck Jørgensen, Torben; Sørensen, Ditte-Lene

    2013-01-01

    Good governance is a broad concept used by many international organizations to spell out how states or countries should be governed. Definitions vary, but there is a clear core of common public values, such as transparency, accountability, effectiveness, and the rule of law. It is quite likely......, however, that national views of good governance reflect different political cultures and institutional heritages. Fourteen national codes of conduct are analyzed. The findings suggest that public values converge and that they match model codes from the United Nations and the European Council as well...... as conceptions of good governance from other international organizations. While values converge, they are balanced and communicated differently, and seem to some extent to be translated into the national cultures. The set of global public values derived from this analysis include public interest, regime dignity...

  6. A good patient?

    DEFF Research Database (Denmark)

    Campbell, Catherine; Scott, Kerry; Skovdal, Morten

    2015-01-01

    staff, 48 ART users, and 31 carers of HIV positive children, as well as field notes from over 100 h ofethnographic observation at health centres in rural Zimbabwe. Results: Characteristics of a good patient include obedience, patience, politeness, listening, enthusiasm fortreatment, intelligence......’ to accessgood care and ensure continued access to ART. Discussion: The notion of a ‘good ART patient’ can have positive effects on patient health outcomes. It is one ofthe only arenas of the clinic experience that ART patients can influence in their favour. However, for people notconforming to the norms...... of the ‘good patient persona’, the productive and health-enabling patient-nurserelationship may break down and be detrimental to the patient. Conclusion: We conclude that policy makers need to take heed of the social representations that governpatient-nurse relationships and their role in facilitating...

  7. Doing Good Parenthood

    DEFF Research Database (Denmark)

    Westerling, Allan

    2016-01-01

    by notions such as good childhood, family ideals, national public health and educational strategies. The authors illustrate how different versions of parenthood coexist and how complex sets of actions are demanded to fulfil today’s expectations of parenthood in Western societies. This interdisciplinary book......This edited collection shows that good parenthood is neither fixed nor stable. The contributors show how parenthood is equally done by men, women and children, in and through practices involving different normative guidelines. The book explores how normative layers of parenthood are constituted...

  8. International Boundary United States Mexico Minute 315

    Data.gov (United States)

    International Boundary & Water Commission — This dataset was created to provide resource managers, public officials, researchers, and the general public with ready access to the location of the international...

  9. Pressure and ion composition boundaries at Mars

    National Research Council Canada - National Science Library

    Xu, Shaosui; Liemohn, Michael W; Dong, Chuanfei; Mitchell, David L; Bougher, Stephen W; Ma, Yingjuan

    2016-01-01

    This study analyzes results from a multifluid MHD simulation to investigate the shape and structure of the pressure and composition boundaries at Mars, which can provide physical insight for the observational analysis...

  10. Fiber optic distributed temperature sensing for the determination of the nocturnal atmospheric boundary layer height

    Directory of Open Access Journals (Sweden)

    C. A. Keller

    2011-02-01

    Full Text Available A new method for measuring air temperature profiles in the atmospheric boundary layer at high spatial and temporal resolution is presented. The measurements are based on Raman scattering distributed temperature sensing (DTS with a fiber optic cable attached to a tethered balloon. These data were used to estimate the height of the stable nocturnal boundary layer. The experiment was successfully deployed during a two-day campaign in September 2009, providing evidence that DTS is well suited for this atmospheric application. Observed stable temperature profiles exhibit an exponential shape confirming similarity concepts of the temperature inversion close to the surface. The atmospheric mixing height (MH was estimated to vary between 5 m and 50 m as a result of the nocturnal boundary layer evolution. This value is in good agreement with the MH derived from concurrent Radon-222 (222Rn measurements and in previous studies.

  11. What Good Leaders Do.

    Science.gov (United States)

    Cash, Jeanie

    1997-01-01

    According to California's National Distinguished Principal, good leaders celebrate creativity and capitalize on others' creativity while building schools on foundations of trust, commitment, and fun. Successful leaders are optimistic, generate trust, reward innovation, create a safety net for risk-taking behavior, delegate authority, and lead…

  12. 'The Good Citizen’

    DEFF Research Database (Denmark)

    Offersen, Sara Marie Hebsgaard; Vedsted, Peter; Andersen, Rikke Sand

    2017-01-01

    the Danish welfare state and the middle-class popula- tion is embodied in a responsibility for individual health. Overall, we identify a striving to be a ‘good citizen’; this entails confl icting moral possibilities in relation to experiencing, interpreting and acting on bodily sensations. We examine how...

  13. Financial Giffen Goods

    DEFF Research Database (Denmark)

    Poulsen, Rolf; Rasmussen, Kourosh Marjani

    2008-01-01

    In the basic Markowitz and Merton models, a stock’s weight in efficient portfolios goes up if its expected rate of return goes up. Put differently, there are no financial Giffen goods. By an example from mortgage choice we illustrate that for more complicated portfolio problems Giffen effects do...

  14. Good Laboratory Practice

    Science.gov (United States)

    Hadjicostas, Evsevios

    The principles of Good Laboratory Practice (GLP) in conjunction with the principles of Total Quality Management (see chapter 6) ensure the quality and reliability of the laboratory results, which in turn help to ensure the protection of the environment and human health and safety. A step further is the accreditation of laboratories to ISO 17025 (see chapter 2) to perform specified activities.

  15. Contests for public goods

    NARCIS (Netherlands)

    Heine, Florian

    2017-01-01

    In this dissertation I examine group contests for both endogenous and exogenous public goods. Three studies jointly illustrate that participants accede to a pernicious one-upping in order to outdo the competing party. This tendency to over-contribute in (group) contest games complements earlier

  16. Good Times in Tiibingen

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 11; Issue 8. Good Times in Tübingen. Wolfgang Engelmann. Book Review Volume 11 Issue 8 August 2006 pp 101-102. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/011/08/0101-0102. Author Affiliations.

  17. Doing Good, Feeling Bad

    DEFF Research Database (Denmark)

    Sharma, Devika

    2017-01-01

    For decades humanitarianism has captured and shaped the dreams of the populations of the global North, dreams of a better world, of a common humanity, of goodness, of solidarity, and of global healing. In this article I argue that when taking art and cultural objects into account humanitarian rea...

  18. Reconsidering the "Good Divorce"

    Science.gov (United States)

    Amato, Paul R.; Kane, Jennifer B.; James, Spencer

    2011-01-01

    This study attempted to assess the notion that a "good divorce" protects children from the potential negative consequences of marital dissolution. A cluster analysis of data on postdivorce parenting from 944 families resulted in three groups: cooperative coparenting, parallel parenting, and single parenting. Children in the cooperative coparenting…

  19. Natural Good Theories and the Value of Human Dignity.

    Science.gov (United States)

    Muders, Sebastian

    2016-04-01

    One of the widely recognized facts about human dignity is its vastly divergent applicability-from highly controversial issues in bioethics to broader topics in political philosophy. A group of theories that this article subsumes under the header "natural good theories" appears to be especially fitted for normatively multifaceted notions like dignity. However, the heavy normative weight the concept of dignity has to bear due to the central position it occupies within these theories creates its own difficulties. As is shown in a discussion of Martha Nussbaum's capability conception of dignity, dignity appears to be unable to mirror the special normative relevance people want to assign to it in cases of great moral misconduct. The article provides a suggestion on how to solve this problem by means of paradigmatic cases that work as material constraints regarding the exact boundaries of dignity violations.

  20. Seeking the boundary of boundary extension.

    Science.gov (United States)

    McDunn, Benjamin A; Siddiqui, Aisha P; Brown, James M

    2014-04-01

    Boundary extension (BE) is a remarkably consistent visual memory error in which participants remember seeing a more wide-angle image of a scene than was actually viewed (Intraub & Richardson, Journal of Experimental Psychology: Learning, Memory, and Cognition 15:179-187, 1989). Multiple stimulus factors are thought to contribute to the occurrence of BE, including object recognition, conceptual knowledge of scenes, and amodal perception at the view boundaries (Intraub, Wiley Interdisciplinary Reviews: Cognitive Science 3:117-127, 2012). In the present study, we used abstract scenes instead of images of the real world, in order to remove expectations based on semantic associations with objects and the schematic context of the view. Close-angle and wide-angle scenes were created using irregular geometric shapes rated by independent observers as lacking any easily recognizable structure. The abstract objects were tested on either a random-dot or a blank background in order to assess the influence of implied continuation of the image beyond its boundaries. The random-dot background conditions had background occlusion cues either present or absent at the image border, in order to test their influence on BE in the absence of high-level information about the scenes. The results indicate that high-level information about objects and schematic context is unnecessary for BE to occur, and that occlusion information at the image boundary also has little influence on BE. Contrary to previous studies, we also found clear BE for all conditions, despite using scenes depicting undetailed objects on a blank white background. The results highlighted the ubiquitous nature of BE and the adaptability of scene perception processes.

  1. Administrative Area Boundaries 2 (State Boundaries), Region 9, 2010, NAVTEQ

    Data.gov (United States)

    U.S. Environmental Protection Agency — NAVTEQ Administrative Area Boundaries 2 (State Boundaries) for Region 9. There are five Administrative Area Boundaries layers (1, 2, 3, 4, 5). These layers contain...

  2. Administrative Area Boundaries 4 (City Boundaries), Region 9, 2010, NAVTEQ

    Data.gov (United States)

    U.S. Environmental Protection Agency — NAVTEQ Administrative Area Boundaries 4 (City Boundaries) for Region 9. There are five Administrative Area Boundaries layers (1, 2, 3, 4, 5). These layers contain...

  3. Inverse boundary spectral problems

    CERN Document Server

    Kachalov, Alexander; Lassas, Matti

    2001-01-01

    Inverse boundary problems are a rapidly developing area of applied mathematics with applications throughout physics and the engineering sciences. However, the mathematical theory of inverse problems remains incomplete and needs further development to aid in the solution of many important practical problems.Inverse Boundary Spectral Problems develop a rigorous theory for solving several types of inverse problems exactly. In it, the authors consider the following: ""Can the unknown coefficients of an elliptic partial differential equation be determined from the eigenvalues and the boundary value

  4. Beyond the Boundary

    DEFF Research Database (Denmark)

    Gorm Hansen, Birgitte

    2011-01-01

    Whether celebratory or critical, STS research on science-industry relations has focused on the blurring of boundaries and hybridization of codes and practices. However, the vocabulary of boundary and hybrid tends to reify science and industry as separate in the attempt to map their relation...... as the negotiation of a preexisting science-industry boundary. Rather, viability is obtained through a strategy of "circumventing" the science-industry food chain and "sequestering" biotech components within the research center. Symbiosis allows academic scientists to do biology while at the same time demonstrating...

  5. Beyond the Boundary

    DEFF Research Database (Denmark)

    Gorm Hansen, Birgitte

    2012-01-01

    Whether celebratory or critical, STS research on science-industry relations has focused on the blurring of boundaries and hybridization of codes and practices. However, the vocabulary of boundary and hybrid tends to reify science and industry as separate in the attempt to map their relation...... as the negotiation of a preexisting science-industry boundary. Rather, viability is obtained through a strategy of circumventing the science-industry food chain and sequestering biotech components within the research center. Symbiosis allows academic scientists to do biology while at the same time demonstrating...

  6. Approaching the Asymptotic Regime of Rapidly Rotating Convection: Boundary Layers vs Interior Dynamics

    CERN Document Server

    Stellmach, S; Julien, K; Vasil, G; Cheng, J S; Ribeiro, A; King, E M; Aurnou, J M

    2014-01-01

    Rapidly rotating Rayleigh-B\\'enard convection is studied by combining results from direct numerical simulations (DNS), laboratory experiments and asymptotic modeling. The asymptotic theory is shown to provide a good description of the bulk dynamics at low, but finite Rossby number. However, large deviations from the asymptotically predicted heat transfer scaling are found, with laboratory experiments and DNS consistently yielding much larger Nusselt numbers than expected. These deviations are traced down to dynamically active Ekman boundary layers, which are shown to play an integral part in controlling heat transfer even for Ekman numbers as small as $10^{-7}$. By adding an analytical parameterization of the Ekman transport to simulations using stress-free boundary conditions, we demonstrate that the heat transfer jumps from values broadly compatible with the asymptotic theory to states of strongly increased heat transfer, in good quantitative agreement with no-slip DNS and compatible with the experimental d...

  7. Meet the good child

    DEFF Research Database (Denmark)

    Gram, Malene; Grønhøj, Alice

    2016-01-01

    ’ and most often prefer to take on this position, which is confirmed by their parents. The children can describe how ‘the good child’—in their eyes—should behave. They prefer consensus and not being embarrassing or embarrassed. The study concludes that the children are strongly immersed in social norms...... to be appropriate child and parental behavior. The study takes a practice theoretical perspective, building on previous research on family consumption, and draws empirically on 35 interviews with 5–6 year-olds and 13 family interviews. Findings show that the children recognize the position of ‘the good child......This article explores ‘childing’ pratices in relation to family supermarket shopping in Denmark. ‘Parenting’ practices have been explored for long but little attention has been given to how children strive to be ‘good’ children, who live up to certain standards and recognize what they perceive...

  8. Trees are good, but…

    Science.gov (United States)

    E.G. McPherson; F. Ferrini

    2010-01-01

    We know that “trees are good,” and most people believe this to be true. But if this is so, why are so many trees neglected, and so many tree wells empty? An individual’s attitude toward trees may result from their firsthand encounters with specific trees. Understanding how attitudes about trees are shaped, particularly aversion to trees, is critical to the business of...

  9. Selling good behavior.

    Science.gov (United States)

    Braus, P

    1995-11-01

    Social marketers use the tools of selling to promote good nutrition, regular checkups, and other positive behavior. Instead of preaching, they try to understand and change the complex motivations that lie behind risky activities like smoking and unsafe sex. AIDS prevention is the vanguard of social marketing in the U.S., but the practice is likely to spread for a simple reason: it works.

  10. 'Good Order and Police'

    DEFF Research Database (Denmark)

    Mührmann-Lund, Jørgen

    2016-01-01

    that ‘good order and police’ was in demand by the subjects and also adapted to local needs. Inspired by this research this article investigates the enforcement of police ordinances in the market towns of Aalborg and Sæby and the country district of Børglum-Jerslev. The results show that policing remained...... of governing, ‘police’ was both a way both to govern free burghers and preserve traditional order....

  11. HUC 8 Boundaries

    Data.gov (United States)

    Kansas Data Access and Support Center — This data set is a digital hydrologic unit boundary that is at the 4-digit, 6-digit, 8-digit, and 11-digit level. The data set was developed by delineating the...

  12. FWS Approved Acquisition Boundaries

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This data layer depicts the external boundaries of lands and waters that are approved for acquisition by the U.S. Fish and Wildlife Service (USFWS) in North America,...

  13. National Forest Boundaries

    Data.gov (United States)

    Minnesota Department of Natural Resources — This theme shows the USFS national forest boundaries in the state. This data was acquired from the GIS coordinators at both the Chippewa National Forest and the...

  14. VT Telephone Exchange Boundaries

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) The UtilityTelecom_EXCHANGE represents Vermont Telephone Exchange boundaries as defined by the VT Public Service Board. The original data was...

  15. State Park Statutory Boundaries

    Data.gov (United States)

    Minnesota Department of Natural Resources — Legislative statutory boundaries for sixty six state parks, six state recreation areas, and eight state waysides. These data are derived principally from DNR's...

  16. 500 Cities: City Boundaries

    Data.gov (United States)

    U.S. Department of Health & Human Services — This city boundary shapefile was extracted from Esri Data and Maps for ArcGIS 2014 - U.S. Populated Place Areas. This shapefile can be joined to 500 Cities...

  17. Allegheny County Parcel Boundaries

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset contains parcel boundaries attributed with county block and lot number. Use the Property Information Extractor for more control downloading a filtered...

  18. Watershed Boundary Areas

    Data.gov (United States)

    Department of Homeland Security — This map layer contains hydrologic unit boundaries and codes for the United States, Puerto Rico, and the U.S. Virgin Islands. It was revised for inclusion in the...

  19. NM School District Boundaries

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The dataset represents the boundaries of all public school districts in the state of New Mexico. The source for the data layer is the New Mexico Public Education...

  20. Allegheny County Boundary

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset contains the Allegheny County boundary. If viewing this description on the Western Pennsylvania Regional Data Center’s open data portal...

  1. Site Area Boundaries

    Data.gov (United States)

    U.S. Environmental Protection Agency — This dataset consists of site boundaries from multiple Superfund sites in U.S. EPA Region 8. These data were acquired from multiple sources at different times and...

  2. Tax Unit Boundaries

    Data.gov (United States)

    Kansas Data Access and Support Center — The Statewide GIS Tax Unit boundary file was created through a collaborative partnership between the State of Kansas Department of Revenue Property Valuation...

  3. VT Federal Aid Urban Boundaries

    Data.gov (United States)

    Vermont Center for Geographic Information — Federal Aid Urban boundaries are defined based on US Census data. The roadways within these boundaries have urban classifications. These FAU boundaries were updated...

  4. Boundaries and level of experience with six types of dreams.

    Science.gov (United States)

    Hicks, R A; Bautista, J; Hicks, G J

    1999-12-01

    The self-reported levels of experience to six types of dreams were compared for groups of students who classified as having either thin (n = 30) or thick (n = 86) boundaries. Consistent with predictions drawn from the literature, the thin-boundary group scored significantly higher on level of experience for each dream type than the thick-boundary group. These data provide additional validation for Hartmann's Boundary Questionnaire.

  5. Good clinical sense in diabetology.

    Science.gov (United States)

    Kalra, Sanjay; Gupta, Yashdeep

    2015-08-01

    This article defines and explains the concept of good clinical sense. It defines good clinical sense as "the presence of sensory faculties, their usage and interpretation, by which one is able to practice good clinical medicine". Good clinical sense differs from good clinical practice (GCP) and good clinical acumen. It encompasses all steps of the clinical, diagnostic and therapeutic process, and encourages diligent practice of clinical medicine. Good clinical sense is integral to the practice of diabetology.

  6. Fully nonlinear boundary value problems with impulse

    Directory of Open Access Journals (Sweden)

    Paul Eloe

    2011-04-01

    Full Text Available An impulsive boundary value problem with nonlinear boundary conditions for a second order ordinary differential equation is studied. In particular, sufficient conditions are provided so that a compression - expansion cone theoretic fixed point theorem can be applied to imply the existence of positive solutions. The nonlinear forcing term is assumed to satisfy usual sublinear or superlinear growth as $t\\rightarrow\\infty$ or $t\\rightarrow 0^+$. The nonlinear impulse terms and the nonlinear boundary terms are assumed to satisfy the analogous asymptotic behavior.

  7. Good supervision and PBL

    DEFF Research Database (Denmark)

    Otrel-Cass, Kathrin

    This field study was conducted at the Faculty of Social Sciences at Aalborg University with the intention to investigate how students reflect on their experiences with supervision in a PBL environment. The overall aim of this study was to inform about the continued work in strengthening supervision...... at this faculty. This particular study invited Master level students to discuss: • How a typical supervision process proceeds • How they experienced and what they expected of PBL in the supervision process • What makes a good supervision process...

  8. PHP The Good Parts

    CERN Document Server

    MacIntyre, Peter

    2010-01-01

    Get past all the hype about PHP and dig into the real power of this language. This book explores the most useful features of PHP and how they can speed up the web development process, and explains why the most commonly used PHP elements are often misused or misapplied. You'll learn which parts add strength to object-oriented programming, and how to use certain features to integrate your application with databases. Written by a longtime member of the PHP community, PHP: The Good Parts is ideal for new PHP programmers, as well as web developers switching from other languages. Become familiar w

  9. Simulations of Boundary Turbulence in Tokamak Experiments

    Energy Technology Data Exchange (ETDEWEB)

    Nevins, W M; Xu, X Q; Carlstrom, T N; Cohen, R H; Groebner, R; Jennings, T; LaBombard, B; Maqueda, R A; Mazurenko, A; McKee, G R; Moyer, R; Mossessian, D; Porkolab, M; Porter, G D; Rensink, M E; Rhodes, T L; Rognlien, T D; Rost, C; Snipes, J; Stotler, D P; Terry, J; Zweben, S

    2002-10-11

    Comparisons between the boundary plasma turbulence observed in the BOUT code and experiments on C-Mod, NSTX, and DIII-D are presented. BOUT is a 3D non-local electromagnetic turbulence simulation code which models boundary-plasma turbulence in a realistic divertor geometry using the modified Braginskii equations for plasma vorticity, density, the electron and ion temperatures and parallel momenta. Many features of the Quasi-Coherent (QC) mode, observed at high densities during enhanced D-alpha (EDA) H-Mode in Alcator C-Mod, are reproduced in BOUT simulations. The spatial structure of boundary plasma turbulence as observed by gas puff imaging (GPI) from discharges on NSTX and C-Mod are in general (NSTX) to good (CMod) agreement with BOUT simulations. Finally, BOUT simulations of DIII-D L-mode experiments near the Hmode transition threshold are in broad agreement with the experimental results.

  10. Boundaries and e-health implementation in health and social care

    Directory of Open Access Journals (Sweden)

    King Gerry

    2012-09-01

    Full Text Available Abstract Background The major problem facing health and social care systems globally today is the growing challenge of an elderly population with complex health and social care needs. A longstanding challenge to the provision of high quality, effectively coordinated care for those with complex needs has been the historical separation of health and social care. Access to timely and accurate data about patients and their treatments has the potential to deliver better care at less cost. Methods To explore the way in which structural, professional and geographical boundaries have affected e-health implementation in health and social care, through an empirical study of the implementation of an electronic version of Single Shared Assessment (SSA in Scotland, using three retrospective, qualitative case studies in three different health board locations. Results Progress in effectively sharing electronic data had been slow and uneven. One cause was the presence of established structural boundaries, which lead to competing priorities, incompatible IT systems and infrastructure, and poor cooperation. A second cause was the presence of established professional boundaries, which affect staffs’ understanding and acceptance of data sharing and their information requirements. Geographical boundaries featured but less prominently and contrasting perspectives were found with regard to issues such as co-location of health and social care professionals. Conclusions To provide holistic care to those with complex health and social care needs, it is essential that we develop integrated approaches to care delivery. Successful integration needs practices such as good project management and governance, ensuring system interoperability, leadership, good training and support, together with clear efforts to improve working relations across professional boundaries and communication of a clear project vision. This study shows that while technological developments make

  11. The Good Investment.

    Science.gov (United States)

    Prescott, John E; Fresne, Julie A; Youngclaus, James A

    2017-07-01

    The authors reflect on the article in this issue entitled "Borrow or Serve? An Economic Analysis of Options for Financing a Medical School Education" by Marcu and colleagues, which makes a compelling case that a medical school education is a good investment, no matter what financing option students use, from federal service programs to federal loans. The lead author of this Commentary shares lessons learned from his own medical school education, which was funded by an Armed Forces Health Professions Scholarship, and from his current position interacting with medical students across the United States.Regardless of the financing path they choose, all students should understand basic financial concepts and the details of the various pathways that are available to pay for their medical school education, as well as how each could potentially impact their own future and that of their families. One underappreciated aspect of financing a medical school education is that federal repayment scenarios can link loan payments to income, rather than debt levels, which means that all physicians are able to afford their loan payments no matter what specialty they practice, what they are paid, or where they live.Medical education, while expensive, remains the good investment. An MD degree can lead to a lifetime of personal fulfillment and societal contributions. Everyone, with rare exceptions, accepted to a U.S. medical school will be able to finance their medical education via a path that aligns with their personal values and priorities.

  12. Good governance for pension schemes

    CERN Document Server

    Thornton, Paul

    2011-01-01

    Regulatory and market developments have transformed the way in which UK private sector pension schemes operate. This has increased demands on trustees and advisors and the trusteeship governance model must evolve in order to remain fit for purpose. This volume brings together leading practitioners to provide an overview of what today constitutes good governance for pension schemes, from both a legal and a practical perspective. It provides the reader with an appreciation of the distinctive characteristics of UK occupational pension schemes, how they sit within the capital markets and their social and fiduciary responsibilities. Providing a holistic analysis of pension risk, both from the trustee and the corporate perspective, the essays cover the crucial role of the employer covenant, financing and investment risk, developments in longevity risk hedging and insurance de-risking, and best practice scheme administration.

  13. Pressure Fluctuations Induced by a Hypersonic Turbulent Boundary Layer

    Science.gov (United States)

    Duan, Lian; Choudhari, Meelan M.; Zhang, Chao

    2016-01-01

    Direct numerical simulations (DNS) are used to examine the pressure fluctuations generated by a spatially-developed Mach 5.86 turbulent boundary layer. The unsteady pressure field is analyzed at multiple wall-normal locations, including those at the wall, within the boundary layer (including inner layer, the log layer, and the outer layer), and in the free stream. The statistical and structural variations of pressure fluctuations as a function of wall-normal distance are highlighted. Computational predictions for mean velocity pro les and surface pressure spectrum are in good agreement with experimental measurements, providing a first ever comparison of this type at hypersonic Mach numbers. The simulation shows that the dominant frequency of boundary-layer-induced pressure fluctuations shifts to lower frequencies as the location of interest moves away from the wall. The pressure wave propagates with a speed nearly equal to the local mean velocity within the boundary layer (except in the immediate vicinity of the wall) while the propagation speed deviates from the Taylor's hypothesis in the free stream. Compared with the surface pressure fluctuations, which are primarily vortical, the acoustic pressure fluctuations in the free stream exhibit a significantly lower dominant frequency, a greater spatial extent, and a smaller bulk propagation speed. The freestream pressure structures are found to have similar Lagrangian time and spatial scales as the acoustic sources near the wall. As the Mach number increases, the freestream acoustic fluctuations exhibit increased radiation intensity, enhanced energy content at high frequencies, shallower orientation of wave fronts with respect to the flow direction, and larger propagation velocity.

  14. Free vibration of functionally graded parabolic and circular panels with general boundary conditions

    Directory of Open Access Journals (Sweden)

    Zhang Hong

    2017-01-01

    Full Text Available The purpose of this content is to investigate the free vibration of functionally graded parabolic and circular panels with general boundary conditions by using the Fourier-Ritz method. The first-order shear deformation theory is adopted to consider the effects of the transverse shear and rotary inertia of the panel structures. The functionally graded panel structures consist of ceramic and metal which are assumed to vary continuously through the thickness according to the power-law distribution, and two types of power-law distributions are considered for the ceramic volume fraction. The improved Fourier series method is applied to construct the new admissible function of the panels to surmount the weakness of the relevant discontinuities with the original displacement and its derivatives at the boundaries while using the traditional Fourier series method. The boundary spring technique is adopted to simulate the general boundary condition. The unknown coefficients appearing in the admissible function are determined by using the Ritz procedure based on the energy functional of the panels. The numerical results show the present method has good convergence, reliability and accuracy. Some new results for functionally graded parabolic and circular panels with different material distributions and boundary conditions are provided, which may serve as benchmark solutions.

  15. A statistical approach for identifying the ionospheric footprint of magnetospheric boundaries from SuperDARN observations

    Directory of Open Access Journals (Sweden)

    G. Lointier

    2008-02-01

    Full Text Available Identifying and tracking the projection of magnetospheric regions on the high-latitude ionosphere is of primary importance for studying the Solar Wind-Magnetosphere-Ionosphere system and for space weather applications. By its unique spatial coverage and temporal resolution, the Super Dual Auroral Radar Network (SuperDARN provides key parameters, such as the Doppler spectral width, which allows the monitoring of the ionospheric footprint of some magnetospheric boundaries in near real-time. In this study, we present the first results of a statistical approach for monitoring these magnetospheric boundaries. The singular value decomposition is used as a data reduction tool to describe the backscattered echoes with a small set of parameters. One of these is strongly correlated with the Doppler spectral width, and can thus be used as a proxy for it. Based on this, we propose a Bayesian classifier for identifying the spectral width boundary, which is classically associated with the Polar Cap boundary. The results are in good agreement with previous studies. Two advantages of the method are: the possibility to apply it in near real-time, and its capacity to select the appropriate threshold level for the boundary detection.

  16. The Messiness of Common Good

    DEFF Research Database (Denmark)

    Feldt, Liv Egholm

    Civil society and its philanthropic and voluntary organisations are currently experiencing public and political attention and demands to safeguard society’s ‘common good’ through social cohesion and as providers of welfare services. This has raised the question by both practitioners and researchers...... alike of whether civil society and its organisations can maintain their specific institutional logic if they are messed up with other logics (state and market). These concerns spring from a sector model that has championed research of civil society. The paper dismisses the sector model and claims...... has been messed up with other logics and that it is this mess that creates contemporary definitions of the common good....

  17. Tectonics of oblique plate boundary systems

    Science.gov (United States)

    Díaz-Azpiroz, Manuel; Brune, Sascha; Leever, Karen A.; Fernández, Carlos; Czeck, Dyanna M.

    2016-12-01

    The relative displacement between lithospheric plates normally results in obliquely deforming plate boundaries. This is simply caused by the fact that, on plate tectonics basis, irregularly shaped plate boundaries are rarely perpendicular or parallel to small-circle rotation paths, which describe plate motion on a sphere (Fig. 1a). Global current relative plate motions estimated from geological data (DeMets et al., 2010; Argus et al., 2011) and GPS measurements (e.g., Kreemer et al., 2003; Argus et al., 2010) provide insight to the prevalent degrees of obliquity on Earth's surface. Based on these global data sets, Philippon and Corti (2016), statistically show that current orthogonal boundaries (obliquity angle smaller than 10°) represent around 8% of the total boundary length whereas strike-slip boundaries (obliquity angle larger than 80°) are encountered in plate boundaries present oblique relative motions. Furthermore, changes in plate kinematics leading to migration or jumps in the rotation poles necessarily cause obliquity along former pure strike-slip or convergent/divergent boundaries (Fig. 1b).

  18. Education for active goodness

    Directory of Open Access Journals (Sweden)

    Vacek Pavel

    2016-06-01

    Full Text Available The present paper focuses on the interconnection and the impact of broader social events responsible for shaping the character of the young in the context of developments in both post-communist countries and the European Union as a whole. The attention of the paper is devoted to the changing perceptions of liberty in relation to a high standard of living in European countries and the need to promote moral education comprehensively, with regard to having a balanced impact on the development of moral knowing and moral feeling. Further, the paper offers an analysis of dimensions that determine moral actions and character accents, considered to be essential to convey in order to encourage the moral development of pupils. Finally, the paper ends with a presentation of the conditions that should help the ethical development of active goodness in the young generation.

  19. Adaptive Sentence Boundary Disambiguation

    CERN Document Server

    Palmer, D D; Palmer, David D.; Hearst, Marti A.

    1994-01-01

    Labeling of sentence boundaries is a necessary prerequisite for many natural language processing tasks, including part-of-speech tagging and sentence alignment. End-of-sentence punctuation marks are ambiguous; to disambiguate them most systems use brittle, special-purpose regular expression grammars and exception rules. As an alternative, we have developed an efficient, trainable algorithm that uses a lexicon with part-of-speech probabilities and a feed-forward neural network. After training for less than one minute, the method correctly labels over 98.5\\% of sentence boundaries in a corpus of over 27,000 sentence-boundary marks. We show the method to be efficient and easily adaptable to different text genres, including single-case texts.

  20. Slip systems, lattice rotations and dislocation boundaries

    DEFF Research Database (Denmark)

    Winther, Grethe

    2008-01-01

    Plastic deformation by slip induces rotations of the crystallographic lattice and evolution of dislocation structures. Both lattice rotations and dislocation structures exhibit a dependence on the grain orientation, which reflects underlying relations to the slip pattern. Relations between the type...... of dislocation structure formed, in particular the crystallographic alignment of dislocation boundaries, and the slip pattern are demonstrated. These relations are applied to polycrystals deformed in tension and rolling, producing good agreement with experiment for rolling but less good agreement for tension...... of these discrepancies is discussed. Finally, the implications of the relations between slip and dislocation structures for the modelling of mechanical properties are discussed....

  1. Good householder and corruption

    Directory of Open Access Journals (Sweden)

    Anđelković Petar M.

    2014-01-01

    Full Text Available Nowadays, in Serbia, it's fashionable to talk about the fight against corruption. 'The spook of fighting corruption circulates through Serbia'. Is there a chance the fight will win the way it's lead? We are convinced there isn't. Since corruption is a process caused by 'rotten' characters, the anti-corruption fight must also be a process of rehabilitation and creation of the right character - the good householder's character. In this process each aspect is important (legal, economic… but for permanent eradication of the evil or the sin of corruption the most important segment is educational because it creates the genuine moral and spiritual value in a hardworking and long-term manner. In 'the period rich in disasters' (Tacitus, in the hard circumstances lasting too long, which would not be endured by any other nation, many values​​, material and moral have inevitably failed. A Serb has endured but also has worn out and lost many virtues, particularly the spirit of a good householder. Mutual hatred seems to be stronger than love, distrust greater than confidence, doubt stronger than faith, and robbery and spoils stronger than charity and solidarity. We need to restore the balance and despite the hardships, and because of them, we must foster mutual love, harmony, unwavering patriotism and value of domesticity. In other words, we must ensure victory of virtue over vice that threatens us from everywhere, both from inside and outside. At the time of 'nuclear techniques and jungle ethics' (Justin Popović the dispersed home of the Serbs can be turned again into a proper home only if we 'have the spirit of domesticity reigning' (Nikolaj Velimirović. To be a successful householder is to be responsible in relation to the state, institution, household that he was entrusted with: add, not to waste, create not to destroy, enlarge rather than reduce, preserve not to destroy a household. 'Do not steal from a country, it was overpaid. Your brothers

  2. Confronting unknown planetary boundary threats from chemical pollution.

    Science.gov (United States)

    Persson, Linn M; Breitholtz, Magnus; Cousins, Ian T; de Wit, Cynthia A; MacLeod, Matthew; McLachlan, Michael S

    2013-11-19

    Rockström et al. proposed a set of planetary boundaries that delimitate a "safe operating space for humanity". One of the planetary boundaries is determined by "chemical pollution", however no clear definition was provided. Here, we propose that there is no single chemical pollution planetary boundary, but rather that many planetary boundary issues governed by chemical pollution exist. We identify three conditions that must be simultaneously met for chemical pollution to pose a planetary boundary threat. We then discuss approaches to identify chemicals that could fulfill those conditions, and outline a proactive hazard identification strategy that considers long-range transport and the reversibility of chemical pollution.

  3. Goode Gym Energy Renovation Project

    Energy Technology Data Exchange (ETDEWEB)

    Coleman, Andrena [Bennett College, Greensboro, NC (United States)

    2014-12-11

    The Ida H. Goode Gymnasium was constructed in 1964 to serve as a focal point for academics, student recreation, and health and wellness activities. This 38,000 SF building contains a gymnasium with a stage, swimming pool, eight classrooms, a weight room, six offices and auxiliary spaces for the athletic programs. The gym is located on a 4-acre greenfield, which is slated for improvement and enhancement to future athletics program at Bennett College. The available funding for this project was used to weatherize the envelope of the gymnasium, installation of a new energy-efficient mechanical system, and a retrofit of the existing lighting systems in the building’s interior. The envelope weatherization was completed without disturbing the building’s historic preservation eligibility. The existing heating system was replaced with a new high efficiency condensing system. The new heating system also includes a new Building Automation System which provides additional monitoring. Proper usage of this system will provide additional energy savings. Most of the existing interior lighting fixtures and bulbs were replaced with new LED and high efficiency T-8 bulbs and fixtures. Occupancy sensors were installed in applicable areas. The Ida Goode Gymnasium should experience high electricity and natural gas savings as well as operational/maintenance efficiency increases. The aesthetics of the building was maintained and the overall safety was improved.

  4. A More Accurate Measure of Local Public Goods: Overlapping Government Combinations as Units of Analysis

    Directory of Open Access Journals (Sweden)

    Samuel B. Stone

    2014-01-01

    Full Text Available This study posits and tests the viability of a new unit of analysis for local public goods in metropolitan areas: overlapping government combinations (OGCs. Counties, municipalities, school districts, and other special districts operate simultaneously within the same space, each providing their own set of local public goods. Residents of the same city can live within the boundaries of different counties, school districts and other special districts and thus receive (and pay for very different quantities and qualities of public goods. Though there is a great deal of literature devoted to the variation of local public goods in a fragmented metropolitan region, there is none that cumulates the different local government types into units that represent the true bundles of local public goods that are provided to citizens and property owners. This study tackles this problem through the application of geographic information systems (GIS to stack counties, municipalities, and school districts in the Dallas-Fort Worth-Arlington CMSA into unique OGCs. The unique OGCs are compared to their underlying component governments with respect to property tax rates and school performance and are found to be statistically distinct.

  5. Good Clinical Practice Training

    Science.gov (United States)

    Arango, Jaime; Chuck, Tina; Ellenberg, Susan S.; Foltz, Bridget; Gorman, Colleen; Hinrichs, Heidi; McHale, Susan; Merchant, Kunal; Shapley, Stephanie; Wild, Gretchen

    2016-01-01

    Good Clinical Practice (GCP) is an international standard for the design, conduct, performance, monitoring, auditing, recording, analyses, and reporting of clinical trials. The goal of GCP is to ensure the protection of the rights, integrity, and confidentiality of clinical trial participants and to ensure the credibility and accuracy of data and reported results. In the United States, trial sponsors generally require investigators to complete GCP training prior to participating in each clinical trial to foster GCP and as a method to meet regulatory expectations (ie, sponsor’s responsibility to select qualified investigators per 21 CFR 312.50 and 312.53(a) for drugs and biologics and 21 CFR 812.40 and 812.43(a) for medical devices). This training requirement is often extended to investigative site staff, as deemed relevant by the sponsor, institution, or investigator. Those who participate in multiple clinical trials are often required by sponsors to complete repeated GCP training, which is unnecessarily burdensome. The Clinical Trials Transformation Initiative convened a multidisciplinary project team involving partners from academia, industry, other researchers and research staff, and government to develop recommendations for streamlining current GCP training practices. Recommendations drafted by the project team, including the minimum key training elements, frequency, format, and evidence of training completion, were presented to a broad group of experts to foster discussion of the current issues and to seek consensus on proposed solutions. PMID:27390628

  6. Minnesota County Boundaries - lines

    Data.gov (United States)

    Minnesota Department of Natural Resources — Minnesota county boundaries derived from a combination of 1:24,000 scale PLS lines, 1:100,000 scale TIGER, 1:100,000 scale DLG, and 1:24,000 scale hydrography lines....

  7. Knowledge production at boundaries

    NARCIS (Netherlands)

    Stange, Kari

    2017-01-01

    This thesis addresses how knowledge is used and produced in stakeholder-led collaborations to make long-term management plans for European fishery management. Boundary object theory is applied and developed to explain how stakeholders from the fishing industry interact with each other, and with

  8. Environmentalists without Boundaries

    African Journals Online (AJOL)

    GREGORY

    2009-03-16

    Mar 16, 2009 ... African Journal of Environmental Science and Technology Vol. ... The most fruitful scientific endeavors invariably cross boundaries – across ... The White Man's Burden: Why the West's Efforts to Aid the Rest Have Done So Much ... cooperation and capacity (7)stimulating economic development and growth, ...

  9. Environmentalists without Boundaries

    African Journals Online (AJOL)

    GREGORY

    2009-03-16

    Mar 16, 2009 ... Hence, this is a laudable project, but Coca Cola should also be cognizant of the growing African environmental pollution problems associated with plastics disposal as they market bottled water and other juices on the continent. This is an example of a challenge associated with advertent boundary crossing ...

  10. Minnesota County Boundaries

    Data.gov (United States)

    Minnesota Department of Natural Resources — Minnesota county boundaries derived from a combination of 1:24,000 scale PLS lines, 1:100,000 scale TIGER, 1:100,000 scale DLG, and 1:24,000 scale hydrography lines....

  11. Boundaries of the universe

    CERN Document Server

    Glasby, John S

    2013-01-01

    The boundaries of space exploration are being pushed back constantly, but the realm of the partially understood and the totally unknown is as great as ever. Among other things this book deals with astronomical instruments and their application, recent discoveries in the solar system, stellar evolution, the exploding starts, the galaxies, quasars, pulsars, the possibilities of extraterrestrial life and relativity.

  12. Dual boundary spanning

    DEFF Research Database (Denmark)

    Li-Ying, Jason

    2016-01-01

    The extant literature runs short in understanding openness of innovation regarding and the different pathways along which internal and external knowledge resources can be combined. This study proposes a unique typology for outside-in innovations based on two distinct ways of boundary spanning...

  13. Environmentalists without Boundaries

    African Journals Online (AJOL)

    GREGORY

    2009-03-16

    Mar 16, 2009 ... idea that development and environmental sustainability require poverty eradication is not a shocking one, but many scholars remain skeptical about the ... in developing countries has potentially solved this boundary problem by asking for donations through the purchase of bottled water at a price that will ...

  14. Comparison of artificial absorbing boundaries for acoustic wave equation modelling

    Science.gov (United States)

    Gao, Yingjie; Song, Hanjie; Zhang, Jinhai; Yao, Zhenxing

    2017-12-01

    Absorbing boundary conditions are necessary in numerical simulation for reducing the artificial reflections from model boundaries. In this paper, we overview the most important and typical absorbing boundary conditions developed throughout history. We first derive the wave equations of similar methods in unified forms; then, we compare their absorbing performance via theoretical analyses and numerical experiments. The Higdon boundary condition is shown to be the best one among the three main absorbing boundary conditions that are based on a one-way wave equation. The Clayton and Engquist boundary is a special case of the Higdon boundary but has difficulty in dealing with the corner points in implementaion. The Reynolds boundary does not have this problem but its absorbing performance is the poorest among these three methods. The sponge boundary has difficulties in determining the optimal parameters in advance and too many layers are required to achieve a good enough absorbing performance. The hybrid absorbing boundary condition (hybrid ABC) has a better absorbing performance than the Higdon boundary does; however, it is still less efficient for absorbing nearly grazing waves since it is based on the one-way wave equation. In contrast, the perfectly matched layer (PML) can perform much better using a few layers. For example, the 10-layer PML would perform well for absorbing most reflected waves except the nearly grazing incident waves. The 20-layer PML is suggested for most practical applications. For nearly grazing incident waves, convolutional PML shows superiority over the PML when the source is close to the boundary for large-scale models. The Higdon boundary and hybrid ABC are preferred when the computational cost is high and high-level absorbing performance is not required, such as migration and migration velocity analyses, since they are not as sensitive to the amplitude errors as the full waveform inversion.

  15. Good Faith and Game Theory

    DEFF Research Database (Denmark)

    Rose, Caspar

    2016-01-01

    This article shows how game theory can be applied to model good faith mathematically using an example of a classic legal dispute related to rei vindicato. The issue is whether an owner has a legal right to his good if a person has bought it in good faith by using updated probabilities. The articl...... illustrates that a rule of where good faith is irrelevant Pareto dominates a rule where good faith may protect an innocent buyer....

  16. Air transport of dangerous goods

    OpenAIRE

    Gregor, Petr

    2009-01-01

    Diploma thesis topic deals with air transport of dangerous goods. In the beginning part it describes air cargo transportation itself as well as the main characteristics. Thesis introduces organizations involved in international transport of dangerous goods. Next part of diploma thesis reveals project analysis of air transportation of dangerous goods in respect of IATA Dangerous Goods regulations and procedures. Thesis also covers introduction to air transportation of dangerous goods in specif...

  17. Good Homework Policy

    Science.gov (United States)

    Protheroe, Nancy

    2009-01-01

    Homework is often a hot-button issue for schools. Even with a school homework policy, the homework practices of teachers vary in quality, with some teachers applying best practice standards, while others assign homework too difficult for some students, or collect homework without providing feedback to students. In addition, families in which…

  18. Making Good Physics Videos

    Science.gov (United States)

    Lincoln, James

    2017-01-01

    Online videos are an increasingly important way technology is contributing to the improvement of physics teaching. Students and teachers have begun to rely on online videos to provide them with content knowledge and instructional strategies. Online audiences are expecting greater production value, and departments are sometimes requesting educators…

  19. Being Good by Doing Good: Goodness and the Evaluation of Persons

    NARCIS (Netherlands)

    Schmidt, Andreas

    Does doing good in itself make one a better person? This idea is intuitive yet its precise formulation underexplored. This article first shows that it is not the case that a person is good to the extent that her existence brings about good or to the extent that her actions do good. A proportional

  20. Good Looking Is Looking Good / Märt Milter

    Index Scriptorium Estoniae

    Milter, Märt

    1998-01-01

    Meloodilist drum ǹ̀bassi viljelevatest välismaa plaadifirmadest Good Looking Recordsist ja Looking Good Recordsist, mida juhib LTJ Bukem ja temaga koostööd tegevatest muusikutest Blame, Seba, Tayla, MC Conrad, Artemis

  1. Making good physics videos

    Science.gov (United States)

    Lincoln, James

    2017-05-01

    Online videos are an increasingly important way technology is contributing to the improvement of physics teaching. Students and teachers have begun to rely on online videos to provide them with content knowledge and instructional strategies. Online audiences are expecting greater production value, and departments are sometimes requesting educators to post video pre-labs or to flip our classrooms. In this article, I share my advice on creating engaging physics videos.

  2. Grain Boundary Segregation in Metals

    CERN Document Server

    Lejcek, Pavel

    2010-01-01

    Grain boundaries are important structural components of polycrystalline materials used in the vast majority of technical applications. Because grain boundaries form a continuous network throughout such materials, their properties may limit their practical use. One of the serious phenomena which evoke these limitations is the grain boundary segregation of impurities. It results in the loss of grain boundary cohesion and consequently, in brittle fracture of the materials. The current book deals with fundamentals of grain boundary segregation in metallic materials and its relationship to the grain boundary structure, classification and other materials properties.

  3. 19 CFR 10.771 - Textile or apparel goods.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Textile or apparel goods. 10.771 Section 10.771... Agreement Rules of Origin § 10.771 Textile or apparel goods. (a) De minimis. Except as provided in paragraph (a)(1) of this section, a textile or apparel good that is not an originating good under the MFTA...

  4. 19 CFR 10.811 - Textile or apparel goods.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Textile or apparel goods. 10.811 Section 10.811... Agreement Rules of Origin § 10.811 Textile or apparel goods. (a) De minimis—(1) General. Except as provided in paragraph (a)(2) of this section, a textile or apparel good that is not an originating good under...

  5. Good terrain geometry, cheap!

    Energy Technology Data Exchange (ETDEWEB)

    Duchaineau, M. [Los Alamos National Lab., NM (United States)]|[Lawrence Livermore National Lab., CA (United States); Wolinsky, M.; Sigeti, D.E. [Los Alamos National Lab., NM (United States)] [and others

    1997-04-01

    Real-time terrain rendering for interactive visualization remains a demanding task. We present a novel algorithm with several advantages over previous methods: our method is unusually stingy with polygons yet achieves real-time performance and is scalable to arbitrary regions and resolutions. The method provides a continuous terrain mesh of specified triangle count having provably minimum error in restricted but reasonably general classes of permissible meshes and error metrics. Our method provides an elegant solution to guaranteeing certain elusive types of consistency in scenes produced by multiple scene generators which share a common finest-resolution database but which otherwise operate entirely independently. This consistency is achieved by exploiting the freedom of choice of error metric allowed by the algorithm to provide, for example, multiple exact lines-of-sight in real-time. Our methods rely on an off-line pre-processing phase to construct a multi-scale data structure consisting of triangular terrain approximations enhanced ({open_quotes}thickened{close_quotes}) with world-space error information. In real time, this error data is efficiently transformed into screen-space where it is used to guide a greedy top-down triangle subdivision algorithm which produces the desired minimal error continuous terrain mesh. Our algorithm has been implemented and it operates at real-time rates.

  6. Good practice with endometrial ablation.

    Science.gov (United States)

    Garry, R

    1995-07-01

    To provide clear guidelines for the safe and effective performance of endometrial ablation. Representatives of American, Australian, British, and Canadian hysteroscopists were brought together to produce a consensus document of good practice in endometrial ablation. The guidelines were produced after researching the literature, combining the extensive experience of the group, and debating the relevant issues. Endometrial ablation is a new procedure. Correct patient selection is essential in producing good results. Patients must be counseled carefully about the advantages, disadvantages, and potential complications of this approach to the management of menstrual disorders. The main indication for endometrial ablation is heavy menstrual loss in the absence of organic disease. Excessive uterine size, the presence of active pelvic infection, and evidence of malignant and premalignant endometrium are absolute contraindications. Ablation can be produced by electrosurgical resection, rollerball or rollerbarrel ablation and Nd-YAG laser ablation. Severe complications can occur, and techniques should be adopted to avoid uterine perforation, hemorrhage, and excessive fluid absorption. In skilled hands, endometrial ablation can be a safe and effective treatment for menorrhagia.

  7. Boundary-layer theory

    CERN Document Server

    Schlichting (Deceased), Hermann

    2017-01-01

    This new edition of the near-legendary textbook by Schlichting and revised by Gersten presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with particular emphasis on the flow past bodies (e.g. aircraft aerodynamics). The new edition features an updated reference list and over 100 additional changes throughout the book, reflecting the latest advances on the subject.

  8. The Varieties of Good Design

    DEFF Research Database (Denmark)

    Ylirisku, Salu; Arvola, Mattias

    2017-01-01

    This chapter explores the philosopher and logician Georg Henrik von Wright’s metaethical treatise of the varieties of goodness in the context of design. von Wright investigated the use of notion of ‘good’ in language, and he identified six kinds of goodness: namely utilitarian goodness, instrumen...... as a point of departure for the appraisal of the multifaceted and rela-tional character of the idea of good design and of the values of design.......This chapter explores the philosopher and logician Georg Henrik von Wright’s metaethical treatise of the varieties of goodness in the context of design. von Wright investigated the use of notion of ‘good’ in language, and he identified six kinds of goodness: namely utilitarian goodness......, instrumental goodness, technical goodness, medical goodness, hedonic goodness, and the good of man. We discuss these different kinds of goodness in relation to six design traditions that we identify, namely conceptual design, usability design, engineering design, ergonomics design, experience design...

  9. A Good Kill: Fixing the Rules of Engagement

    National Research Council Canada - National Science Library

    Hollahan, Mark R

    2008-01-01

    .... United States Standing Rules of Engagement (United States SROE) provide guidance and boundaries for the identification and determination of a person's status with regard to applications of force, targeting, and self-defense...

  10. Measuring the Substellar Boundary

    Science.gov (United States)

    Cancino, Adolfo Andrew; Dupuy, Trent

    2018-01-01

    Brown dwarfs are not massive enough to undergo hydrogen fusion and therefore constantly lose heat and change luminosity over their lifetime. Because of this, brown dwarfs do not follow the same pattern that stars on the main sequence follow. Brown dwarfs can have similar luminosities but widely differing masses, or vice versa, while stars follow a tight relationship between mass and luminosity. In principle, mass and luminosity measurements straddling the boundary between stars and brown dwarfs could be used to directly measure this dividing line in mass. We present a method for determining this boundary accurately given a limited sample size. We tested our method with Monte Carlo simulated samples of brown dwarfs and stars with randomly drawn masses and ages, using evolutionary models to infer luminosities. In our simulation designed to mimic the largest current sample of such mass measurements (37 objects; Dupuy & Liu 2017), we find that the uncertainty in the dividing line that can be inferred from the data is ± 4 MJup. This implies that distinguishing between competing evolutionary model predictions for the boundary (~70-80 MJup) will be difficult given the current sample size of mass measurements.

  11. What makes a good title?

    Science.gov (United States)

    Grant, Maria J

    2013-12-01

    The chances are the first thing you when you set out to write an article is the title. But what factors transform a mediocre title into a good title? Firstly, it should be both informative and specific, using words or phrases likely to be used when searching for information, for example 'nurse education' rather than simply 'nurse'. Secondly, it should be concise yet convey the main ideas clearly; articles with short titles reporting study findings have been found to attract higher numbers of viewing and citations. Thirdly, provide details of the study design to assist the reader in making an informed choice about the type of project your article is reporting. In taking these small steps when developing your title, your title can present a more concise, retrievable and clear articulation of your article. © 2013 The authors. Health Information and Libraries Journal © 2013 Health Libraries Group.

  12. Straight Talk For Good Health

    Science.gov (United States)

    ... Home Current Issue Past Issues Straight Talk For Good Health Past Issues / Summer 2009 Table of Contents For ... can then both make better decisions for your good health. Here's how. Does this sound familiar? You have ...

  13. Coordinating towards a Common Good

    Science.gov (United States)

    Santos, Francisco C.; Pacheco, Jorge M.

    2010-09-01

    Throughout their life, humans often engage in collective endeavors ranging from family related issues to global warming. In all cases, the tragedy of the commons threatens the possibility of reaching the optimal solution associated with global cooperation, a scenario predicted by theory and demonstrated by many experiments. Using the toolbox of evolutionary game theory, I will address two important aspects of evolutionary dynamics that have been neglected so far in the context of public goods games and evolution of cooperation. On one hand, the fact that often there is a threshold above which a public good is reached [1, 2]. On the other hand, the fact that individuals often participate in several games, related to the their social context and pattern of social ties, defined by a social network [3, 4, 5]. In the first case, the existence of a threshold above which collective action is materialized dictates a rich pattern of evolutionary dynamics where the direction of natural selection can be inverted compared to standard expectations. Scenarios of defector dominance, pure coordination or coexistence may arise simultaneously. Both finite and infinite population models are analyzed. In networked games, cooperation blooms whenever the act of contributing is more important than the effort contributed. In particular, the heterogeneous nature of social networks naturally induces a symmetry breaking of the dilemmas of cooperation, as contributions made by cooperators may become contingent on the social context in which the individual is embedded. This diversity in context provides an advantage to cooperators, which is particularly strong when both wealth and social ties follow a power-law distribution, providing clues on the self-organization of social communities. Finally, in both situations, it can be shown that individuals no longer play a defection dominance dilemma, but effectively engage in a general N-person coordination game. Even if locally defection may seem

  14. Boundary issues and personality disorders.

    Science.gov (United States)

    Gutheil, Thomas G

    2005-03-01

    The author first presents an overview of the basic elements of boundary theory and clarifies the distinction between boundary crossings and boundary violations. The concepts of context dependence, power asymmetry, and fiduciary duty as they relate to boundary problems are also discussed. The intrinsic and extrinsic consequences of boundary problems are reviewed. The extrinsic consequences fall into three major categories: civil lawsuits, complaints to the board of registration, and complaints to professional societies. The author then reviews types of boundary issues that arise in relation to histrionic, dependent, antisocial, and borderline personality disorders. Countertransference issues that arise in working with patients with personality disorders are discussed, as well as cultural differences that may affect the perception of boundary problems. The article ends with a list of risk management principles and recommendations for avoiding boundary problems in the therapeutic relationship.

  15. Allegheny County Zip Code Boundaries

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset demarcates the zip code boundaries that lie within Allegheny County. These are not clipped to the Allgeheny County boundary. If viewing this...

  16. Good vibrations. [Hydraulic turbines

    Energy Technology Data Exchange (ETDEWEB)

    Reynolds, P.

    1994-07-01

    The latest developments in the Voith Turbine Control and Automation System (VTLS), which couples digital control technology to hydropower plant equipment, are described. Prominent among these is the vibration diagnostics module for hydraulic turbines. It provides machine-specific diagnostic logic for a vibration monitoring and analysis system. Of the two other VTLS modules described, the operation module optimizes the control of a power plant with three or more turbines by considering the individual properties of each in turn, recommending which should be run, and how, in order to partition the load for a required power output. The cavitation module is a diagnostic system which enables the limits of operation of the turbines to be extended to bands just outside those determined by cavitation calculations. (3 figures). (UK)

  17. Good Enough to Teach?

    DEFF Research Database (Denmark)

    Denver, Louise; Jensen, Christian; Mees, Inger

    2016-01-01

    to improve their communicative effectiveness. The feedback was given by experienced tutors of English who had extensive experience of teaching and assessing English in an everyday ELF context. This paper sets out to investigate what sort of recommendations were provided, concentrating on the 24 lecturers......In a study conducted at the Copenhagen Business School, 1,794 students completed questionnaires on lectures given by 31 non-native English-speaking lecturers in 12 EMI programmes. They were asked to rate the lecture, the lecturer and the lecturer’s language. Statistical analyses revealed...... a correlation between the students’ perceptions of the lecturers’ general lecturing competence (defined as knowledge of subject and teaching skills) and their perceptions of their English language proficiency (Jensen et al. 2013). In return for their assistance, each lecturer received a feedback sheet on how...

  18. Good Enough to Teach?

    DEFF Research Database (Denmark)

    Denver, Louise; Jensen, Christian; Mees, Inger

    2016-01-01

    a correlation between the students’ perceptions of the lecturers’ general lecturing competence (defined as knowledge of subject and teaching skills) and their perceptions of their English language proficiency (Jensen et al. 2013). In return for their assistance, each lecturer received a feedback sheet on how...... to improve their communicative effectiveness. The feedback was given by experienced tutors of English who had extensive experience of teaching and assessing English in an everyday ELF context. This paper sets out to investigate what sort of recommendations were provided, concentrating on the 24 lecturers......In a study conducted at the Copenhagen Business School, 1,794 students completed questionnaires on lectures given by 31 non-native English-speaking lecturers in 12 EMI programmes. They were asked to rate the lecture, the lecturer and the lecturer’s language. Statistical analyses revealed...

  19. Modeling the Boundaries of Plant Ecotones of Mountain Ecosystems

    Directory of Open Access Journals (Sweden)

    Yulia Ivanova

    2016-11-01

    Full Text Available The ecological second-order phase transition model has been used to describe height-dependent changes in the species composition of mountain forest ecosystems. Forest inventory data on the distribution of various tree species in the Sayan Mountains (south Middle Siberia are in good agreement with the model proposed in this study. The model was used to estimate critical heights for different altitudinal belts of vegetation, determine the boundaries and extents of ecotones between different vegetation belts, and reveal differences in the ecotone boundaries between the north- and south-facing transects. An additional model is proposed to describe ecotone boundary shifts caused by climate change.

  20. Searching for the nanoscopic–macroscopic boundary

    Energy Technology Data Exchange (ETDEWEB)

    Velásquez, E.A. [GICM and GES Groups, Instituto de Física-FCEN, Universidad de Antioquia UdeA, Calle 70 No. 52-21 Medellín (Colombia); Grupo de Investigación en Modelamiento y Simulación Computacional, Universidad de San Buenaventura Sec. Medellín, A.A. 5222, Medellín (Colombia); Altbir, D. [Departamento de Física, Universidad de Santiago de Chile (USACH), CEDENNA, Santiago (Chile); Mazo-Zuluaga, J. [GICM and GES Groups, Instituto de Física-FCEN, Universidad de Antioquia UdeA, Calle 70 No. 52-21 Medellín (Colombia); Duque, L.F. [GICM and GES Groups, Instituto de Física-FCEN, Universidad de Antioquia UdeA, Calle 70 No. 52-21 Medellín (Colombia); Grupo de Física Teórica, Aplicada y Didáctica, Facultad de Ciencias Exactas y Aplicadas Instituto Tecnológico Metropolitano, Medellín (Colombia); Mejía-López, J., E-mail: jmejia@puc.cl [Facultad de Física, Pontificia Universidad Católica de Chile, CEDENNA, Santiago (Chile)

    2013-12-15

    Several studies have focused on the size-dependent properties of elements, looking for a unique definition of the nanoscopic–macroscopic boundary. By using a novel approach consisting of an energy variational method combined with a quantum Heisenberg model, here we address the size at which the ordering temperature of a magnetic nanoparticle reaches its bulk value. We consider samples with sizes in the range 1–500 nm, as well as several geometries and crystalline lattices and observe that, contrarily to what is commonly argued, the nanoscopic-microscopic boundary depends on both factors: shape and crystalline structure. This suggests that the surface-to-volume ratio is not the unique parameter that defines the behavior of a nanometric sample whenever its size increases reaching the bulk dimension. Comparisons reveal very good agreement with experimental evidence with differences less than 2%. Our results have broad implications for practical issues in measurements on systems at the nanometric scale. - Highlights: • A novel quantum-Heisenberg variational energy method is implemented. • The asymptotic behavior toward the thermodynamic limit is explored. • An important dependence of the nano-bulk boundary on the geometry is found. • And also an important dependence on the crystalline lattice. • We obtain a very good agreement with experimental evidence with differences <2%.

  1. Plasma transport near material boundaries

    Energy Technology Data Exchange (ETDEWEB)

    Singer, C.E.

    1985-06-01

    The fluid theory of two-dimensional (2-d) plasma transport in axisymmetric devices is reviewed. The forces which produce flow across the magnetic field in a collisional plasma are described. These flows may lead to up-down asymmetries in the poloidal rotation and radial fluxes. Emphasis is placed on understanding the conditions under which the known 2-d plasma fluid equations provide a valid description of these processes. Attempts to extend the fluid treatment to less collisional, turbulent plasmas are discussed. A reduction to the 1-d fluid equations used in many computer simulations is possible when sources or boundary conditions provide a large enough radial scale length. The complete 1-d fluid equations are given in the text, and 2-d fluid equations are given in the Appendix.

  2. Numerical quadrature over smooth surfaces with boundaries

    Science.gov (United States)

    Reeger, Jonah A.; Fornberg, Bengt

    2018-02-01

    This paper describes a high order accurate method to calculate integrals over curved surfaces with boundaries. Given data locations that are arbitrarily distributed over the surface, together with some functional description of the surface and its boundary, the algorithm produces matching quadrature weights. This extends on the authors' earlier methods for integrating over the surface of a sphere and over arbitrarily shaped smooth closed surfaces by also considering domain boundaries. The core approach consists again of combining RBF-FD (radial basis function-generated finite difference) approximations for curved surface triangles, which together make up the full surface. The provided examples include both curved and flat domains. In the highly special case of equi-spaced nodes over a regular interval in 1-D, the method provides a new opportunity for improving on the classical Gregory enhancements of the trapezoidal rule.

  3. Defining ‘good health’

    OpenAIRE

    Erdman, Susan E

    2016-01-01

    We all want to live a long life with ‘good health’. But what does that really mean? Clinicians often define ‘good health’ as the absence of disease. Indeed, modern biomedical research focuses on finding remedies for specific ailments, that, when absent, will yield ‘good health’.

  4. Good towers of function Fields

    DEFF Research Database (Denmark)

    Nguyen, Nhut

    of the project is to find good and optimal towers. Using the theory of Drinfeld modules and computer algebraic techniques, some new examples of good towers are obtained. We analyse towers of Drinfeld modular curves describing certain equivalence classes of rank 2 Drinfeld modules. Using rank 3 Drinfeld modules...... further examples of good towers are produced....

  5. Progress report on grain boundaries

    Science.gov (United States)

    Balluffi, R. W.; Bristowe, P. D.

    1989-06-01

    The research was focused on the following three major areas: (1) study of the atomic structure of grain boundaries by means of X-ray diffraction, transmission electron microscopy and computer modeling; (2) study of grain boundary phase transitions by electron microscopy and computer modeling; (3) investigation of the mechanism of high angle grain boundary migration. Results are briefly discussed.

  6. Progress report on grain boundaries

    Energy Technology Data Exchange (ETDEWEB)

    Balluffi, R.W.; Bristowe, P.D.

    1989-06-01

    The research was focused on the following three major areas: (1) study of the atomic structure of grain boundaries by means of x-ray diffraction, transmission electron microscopy and computer modeling; (2) study of grain boundary phase transitions by electron microscopy and computer modeling; (3) investigation of the mechanism of high angle grain boundary migration. Results are briefly discussed. 20 refs.

  7. Pickin’ up good vibrations

    CERN Multimedia

    Katarina Anthony

    2015-01-01

    In preparation for the civil engineering work on the HL-LHC, vibration measurements were carried out at the LHC’s Point 1 last month. These measurements will help evaluate how civil engineering work could impact the beam, and will provide crucial details about the site’s geological make-up before construction begins.   A seismic truck at Point 1 generated wave-like vibrations measured by EN/MME. From carrying out R&D to produce state-of-the-art magnets to developing innovative, robust materials capable of withstanding beam impact, the HL-LHC is a multi-faceted project involving many groups and teams across CERN’s departments. It was in this framework that the project management mandated CERN's Mechanical and Materials Engineering (EN/MME) group to measure the propagation of vibrations around Point 1. Their question: can civil engineering work for the HL-LHC – the bulk of which is scheduled for LS2 – begin while the LHC is running? Alth...

  8. Reciprocity, social ties, and competition in markets for experience goods

    DEFF Research Database (Denmark)

    Huck, Steffen; Tyran, Jean-Robert

    2007-01-01

    Reciprocal customers may disproportionately improve the performance of markets for experience goods. Reciprocal customers reward (punish) firms for providing good (bad) quality by upholding (terminating) the customer relation. This may induce firms to provide good quality which, in turn, may indu...

  9. Writing good abstracts.

    Science.gov (United States)

    Alexandrov, Andrei V; Hennerici, Michael G

    2007-01-01

    Writing an abstract means to extract and summarize (AB - absolutely, STR - straightforward, ACT - actual data presentation and interpretation). Thousands of abstracts are submitted to stroke conferences each year. The following suggestions may improve the chances of your work being selected for presentation, and to communicate results in the most efficient and unambiguous way. TITLE AND STRUCTURE: Make the title dynamic and informative, rather than descriptive. Structure the abstract following the IMRaD (Introduction, Methods, Results and Discussion) principle for your future original paper where background would become Introduction and conclusions would enter Discussion. Select the appropriate category for submission carefully. This determines which experts grade the abstract and the session where your competitors represent their work. If selected appropriately, your abstract is more likely to be graded by peers with similar interests and familiarity with your work or field. Methods should describe the study design and tools of data acquisition shortly, not data. Provide data that answer the research question. Describe most important data with numbers and statistics. Make your point with data, not speculations and opinions. Abbreviations should be avoided and only be used after they have been spelled out or defined. Common mistakes include failure to state the hypothesis, rationale for the study, sample size and conclusions. Highlight the novelty of your work by carefully chosen straightforward wording. Conclusions have to be based on the present study findings. Make sure your abstract is clear, concise and follows all rules. Show your draft to colleagues for critique, and if you are not a native English speaker show it to a person who can improve/correct your text. Remember that accepted abstracts of completed original research should be followed by published original papers - if this is not intended or fails, it may indicate an impaired ability to succeed in

  10. Boundaries and Boundary Marks - Substantive Cultural Heritage of Extensive Importance

    Science.gov (United States)

    Waldhaeusl, P.; Koenig, H.; Mansberger, R.

    2015-08-01

    The Austrian Society for surveying and Geoinformation (ASG) has proposed to submit "Boundaries and Boundary Marks" for the UNESCO World Heritage title. It was time that boundaries, borders and limits of all types as well as ownership rights would find the proper attention in the global public. Landmarks symbolize the real property and the associated rights and obligations, in a figurative sense, the property generally and all legal limits. A democratic state of law is impossible at today's population density without a functioning land administration system with surveying and jurisdiction. As monumental World Heritage representatives of the geodetic artwork "Boundaries and Boundary Marks" are specifically proposed: remaining monuments of the original cadastral geodetic network, the first pan-Austrian surveying headquarters in Vienna, and a specific selection of outstanding boundary monuments. Landmarks are monuments to the boundaries which separate rights and obligations, but also connect the neighbors peacefully after written agreement. "And cursed be he who does not respect the boundaries" you wrote already 3000 years ago. Boundaries and Boundary Marks are a real thing; they all belong to the tangible or material heritage of human history. In this context also the intangible heritage is discussed. This refers to oral tradition and expressions, performing arts; social practices, rituals and festive events; as well as to knowledge and practices handling nature and the universe. "Boundaries and Boundary Marks" do not belong to it, but clearly to the material cultural world heritage. "Boundary and Boundary Marks" is proposed to be listed according to the criteria (ii),(iv),(vi).

  11. CFD Analysis of the Human Exhalation Flow using Different Boundary Conditions and Ventilation Strategies

    DEFF Research Database (Denmark)

    Villafruela, J.M.; Olmedo, Inés; Ruiz de Adana, M.

    2013-01-01

    This paper analyses the dispersion of the exhaled contaminants by humans in indoor environments, with special attention to the exhalation jet and its interaction with the indoor airflow pattern in both mixing and displacement ventilation conditions. The way in which three different numerical...... different environmental conditions and to validate whether a steady boundary condition of the exhalation flow may simulate human breathing in an effective and accurate way. The results show a very good agreement of the numerical results obtained for Test a and the experimental data. This fact confirms...... the use of numerical simulation as a powerful tool to predict the contaminant distribution exhaled by a human. The numerical tests with steady boundary conditions for the exhalation flow require a transitory resolution procedure and the predictions provided by these models display some discrepancies...

  12. A classification of ecological boundaries

    Science.gov (United States)

    Strayer, D.L.; Power, M.E.; Fagan, W.F.; Pickett, S.T.A.; Belnap, J.

    2003-01-01

    Ecologists use the term boundary to refer to a wide range of real and conceptual structures. Because imprecise terminology may impede the search for general patterns and theories about ecological boundaries, we present a classification of the attributes of ecological boundaries to aid in communication and theory development. Ecological boundaries may differ in their origin and maintenance, their spatial structure, their function, and their temporal dynamics. A classification system based on these attributes should help ecologists determine whether boundaries are truly comparable. This system can be applied when comparing empirical studies, comparing theories, and testing theoretical predictions against empirical results.

  13. On the System. Boundary Choices, Implications, and Solutions in Telecoupling Land Use Change Research

    Directory of Open Access Journals (Sweden)

    Cecilie Friis

    2017-06-01

    Full Text Available Land-based production provides societies with indispensable goods such as food, feed, fibre, and energy. Yet, with economic globalisation and global population growth, the environmental and social trade-offs of their production are ever more complex. This is particularly so since land use changes are increasingly embedded in networks of long-distance flows of, e.g., material, energy, and information. The resulting scientific and governance challenge is captured in the emerging telecoupling framework addressing socioeconomic and environmental interactions and feedbacks between distal human-environment systems. Understanding telecouplings, however, entails a number of fundamental analytical problems. When dealing with global connectivity, a central question is how and where to draw system boundaries between coupled systems. In this article, we explore the analytical implications of setting system boundaries in the study of a recent telecoupled land use change: the expansion of Chinese banana plantation investments in Luang Namtha Province, Laos. Based on empirical material from fieldwork in Laos in 2014 and 2015, and drawing on key concepts from the ‘systems thinking’ literature, we illustrate how treating the system and its boundaries as epistemological constructs enable us to capture the differentiated involvement of actors, as well as the socio-economic and environmental effects of this land use change. In discussing our results, the need for more explicit attention to the trade-offs and implications of scale and boundary choices when defining systems is emphasised.

  14. Professionals and Public Good Capabilities

    Directory of Open Access Journals (Sweden)

    Melanie Walker

    2015-12-01

    Full Text Available Martha Nussbaum (2011 reminds us that, all over the world people are struggling for a life that is fully human - a life worthy of human dignity. Purely income-based and preference-based evaluations, as Sen (1999 argues, do not adequately capture what it means for each person to have quality of life. There are other things that make life good for a person, including access to publicly provided professional services. The question then is what version of education inflects more towards the intrinsic and transformational possibilities of professional work and contributions to decent societies? This paper suggests that we need a normative approach to professional education and professionalism; it is not the case that any old version will do. We also need normative criteria to move beyond social critique and to overcome a merely defensive attitude and to give a positive definition to the potential achievements of the professions. Moreover universities are connected to society, most especially through the professionals they educate; it is reasonable in our contemporary world to educate professional graduates to be in a position to alleviate inequalities, and to have the knowledge, skills and values to be able to do so. To make this case, we draw on the human capabilities approach of Sen (1999, 2009 and Nussbaum (2000, 2011 to conceptualise professional education for the public good as an ally of the struggles of people living in poverty and experiencing inequalities, expanding the well-being of people to be and to do in ways they have reason to value – to be mobile, cared for, respected, and so on. In particular we are interested in which human capabilities and functionings are most needed for a professional practice and professionalism that can contribute to transformative social change and how professional development is enabled via pedagogical arrangements.

  15. Grain Boundary Energies in Copper.

    Science.gov (United States)

    Omar, Ramli

    Available from UMI in association with The British Library. Requires signed TDF. The dependence of grain boundary energy on boundary orientation was studied in copper annealed at 1000 ^circC. Grain boundary orientations and the disorientations across the boundaries were measured. A rotation matrix notation is used to interpret selected area electron channelling patterns observed in a scanning electron microscope. The Herring and Shewmon torque terms were investigated using wire specimens having a "bamboo" structure. The Herring torque terms were determined using the Hess relation. The (110) section of the Sigma 11 gamma-plot (i.e. the variation of grain boundary energy with boundary orientation) was evaluated. In this plot, minima in energies were found at the (311) and (332) mirror planes. Sigma 3 and Sigma9 boundaries were investigated in sheet specimens. The (110) and (111) sections of the Sigma3 gamma -plot were evaluated. In addition to the sharp cusps occurring at the Sigma3 {111} planes, the further shallower cusps occur at the incoherent Sigma 3 boundaries with the interfacial planes approximately parallel to {322} in one crystal and {11.44} in the other crystal. Flat and curved Sigma9 boundaries were investigated. The break up of Sigma9 boundaries into two Sigma3 boundaries and the relation between the Sigma3 and Sigma 9 gamma-plots was also examined. The (110) section of the Sigma9 gamma-plot was constructed.

  16. Solitons and spin transport in graphene boundary

    Indian Academy of Sciences (India)

    2015-10-16

    Oct 16, 2015 ... It is shown that in (2+1)-dimensional condensed matter systems, induced gravitational Chern–Simons (CS) action can play a crucial role for coherent spin transport in a finite geometry, provided zero-curvature condition is satisfied on the boundary. The role of the resultant KdV solitons is explicated. The fact ...

  17. Congregational boundaries, new church developement and ...

    African Journals Online (AJOL)

    Subjective criteria are the opposite of objective criteria such as geographical boundaries or different language groups. The same is true when a congregation is not respected as God's complete church. Beside this, subjective criteria also question God's providence and also the essential variety of God given gifts that should ...

  18. Introducing the Boundary Element Method with MATLAB

    Science.gov (United States)

    Ang, Keng-Cheng

    2008-01-01

    The boundary element method provides an excellent platform for learning and teaching a computational method for solving problems in physical and engineering science. However, it is often left out in many undergraduate courses as its implementation is deemed to be difficult. This is partly due to the perception that coding the method requires…

  19. Global Public Goods and The Role of Emerging Power: Considering the Concept of Impure Public Goods

    Directory of Open Access Journals (Sweden)

    Liu Rieshøj Yi

    2016-12-01

    Full Text Available The existing analysis of global public goods over-emphasizes the significance of public. Great power as a main provider has played an active role in these strategic initiatives, which may be ignored. In fact, main power has thought about the possible free-riders when providing public goods and making its foreign strategic plan. China’s announcement to “welcome the neighbouring countries to be a free-rider and benefit from China’s rise” is a good example. It is necessary to think about the theory of public goods and take another look at the free-riding phenomenon. The concept of impure public goods may be useful and effective when we understand the reason why global public goods are being provided and are relatively efficient. As an emerging power, China should have a clear strategy on global public goods with a possible “marketing” viewpoint, including more initiatives and specific measures, so that the global public goods provision may be more diverse and well-planned.

  20. Reweighting twisted boundary conditions

    CERN Document Server

    Bussone, Andrea; Hansen, Martin; Pica, Claudio

    2015-01-01

    Imposing twisted boundary conditions on the fermionic fields is a procedure extensively used when evaluating, for example, form factors on the lattice. Twisting is usually performed for one flavour and only in the valence, and this causes a breaking of unitarity. In this work we explore the possibility of restoring unitarity through the reweighting method. We first study some properties of the approach at tree level and then we stochastically evaluate ratios of fermionic determinants for different boundary conditions in order to include them in the gauge averages, avoiding in this way the expensive generation of new configurations for each choice of the twisting angle, $\\theta$. As expected the effect of reweighting is negligible in the case of large volumes but it is important when the volumes are small and the twisting angles are large. In particular we find a measurable effect for the plaquette and the pion correlation function in the case of $\\theta=\\pi/2$ in a volume $16\\times 8^3$, and we observe a syst...

  1. REGULATION MISUNDERSTANDING: CONVERGENCE COMPLEXITY PROVIDING FAILURES IN TELECOMMUNICATION SERVICES COSTS

    National Research Council Canada - National Science Library

    Emílio José Montero Arruda Filho

    2017-01-01

    .... This study begins by giving the background to voice communication in the telecommunications sector and the misunderstanding of the competitive boundaries between technologies, service providers...

  2. Stabilizing the boundary between US politics and science: the role of the Office of Technology Transfer as a boundary organization.

    Science.gov (United States)

    Guston, D H

    1999-02-01

    The sociological study of boundary-work and the political-ecomomic approach of principal-agent theory can be complementary ways of examining the relationship between society and science: boundary-work provides the empirical nuance to the principal-agent scheme, and principal-agent theory provides structure to the thick boundary description. This paper motivates this complementarity to examine domestic technology transfer in the USA from the intramural laboratories of the US National Institutes of Health (NIH). It casts US policy for technology transfer in the principal-agent framework, in which politicians attempt to manage the moral hazard of the productivity of research by providing specific incentives to the agents for engaging in measurable research-based innovation. Such incentives alter the previously negotiated boundary between politics and science. The paper identifies the crucial role of the NIH Office of Technology Transfer (OTT) as a boundary organization, which medicates the new boundary negotiations in its routine work, and stabilizes the boundary by performing successfully as an agent for both politicians and scientists. The paper hypothesizes that boundary organizations like OTT are general phenomena at the boundary between politics and science.

  3. Good government and good governance: record keeping in a ...

    African Journals Online (AJOL)

    This article addresses the challenges that arise when record keeping systems are advocated as a necessary under-pinning for good government and good governance. The relationship between record keeping and accountability is analysed and contextualised in relation to transparency and Freedom of Information ...

  4. Boundary Shear Stress Along Vegetated Streambanks

    Science.gov (United States)

    Clark, L. A.; Wynn, T.

    2007-12-01

    Sediment, a leading cause of water quality impairment, damages aquatic ecosystems and interferes with recreational uses and water treatment processes. Streambank retreat can contribute as much as 85% of watershed sediment yield. Vegetation is an important component of stream restoration designs used to control streambank retreat, but vegetation effects on streambank boundary shear stress (SBSS) need to be quantified. The overall goal of this experiment is to predict boundary shear stress along vegetated streambanks. This goal will be met by determining a method for measuring boundary shear stress in the field along hydraulically rough streambanks, evaluating the effects of streambank vegetation on boundary shear stress in the field, and developing predictive methods based on measurable vegetative properties. First, three streambank vegetation types (herbaceous, shrubbery, and woody) will be modeled in a flume study to examine both boundary shear stress measurement theory and instruments for field use. An appropriate method (law of the wall, Reynold's stresses, TKE, or average wall shear stress) and field instrument (ADV, propeller, or Pitot tube) will be selected, resulting in a field technique to measure SBSS. Predictive methods for estimating SBSS, based on common vegetation measurements, will be developed in the flume study and validated with field data. This research is intended to improve our understanding of the role of riparian vegetation in stream morphology by evaluating the effects of vegetation on boundary shear stress, providing insight to the type and density of vegetation required for streambank stability. The results will also aide in quantifying sediment inputs from streambanks, providing quantitative information for stream restoration projects and watershed management planning.

  5. Diagnosis of boundary-layer circulations.

    Science.gov (United States)

    Beare, Robert J; Cullen, Michael J P

    2013-05-28

    Diagnoses of circulations in the vertical plane provide valuable insights into aspects of the dynamics of the climate system. Dynamical theories based on geostrophic balance have proved useful in deriving diagnostic equations for these circulations. For example, semi-geostrophic theory gives rise to the Sawyer-Eliassen equation (SEE) that predicts, among other things, circulations around mid-latitude fronts. A limitation of the SEE is the absence of a realistic boundary layer. However, the coupling provided by the boundary layer between the atmosphere and the surface is fundamental to the climate system. Here, we use a theory based on Ekman momentum balance to derive an SEE that includes a boundary layer (SEEBL). We consider a case study of a baroclinic low-level jet. The SEEBL solution shows significant benefits over Ekman pumping, including accommodating a boundary-layer depth that varies in space and structure, which accounts for buoyancy and momentum advection. The diagnosed low-level jet is stronger than that determined by Ekman balance. This is due to the inclusion of momentum advection. Momentum advection provides an additional mechanism for enhancement of the low-level jet that is distinct from inertial oscillations.

  6. CFD study of the flow pattern in an ultrasonic horn reactor: Introducing a realistic vibrating boundary condition.

    Science.gov (United States)

    Rahimi, Masoud; Movahedirad, Salman; Shahhosseini, Shahrokh

    2017-03-01

    Recently, great attention has been paid to predict the acoustic streaming field distribution inside the sonoreactors, induced by high-power ultrasonic wave generator. The focus of this paper is to model an ultrasonic vibrating horn and study the induced flow pattern with a newly developed moving boundary condition. The numerical simulation utilizes the modified cavitation model along with the "mixture" model for turbulent flow (RNG, k-ε), and a moving boundary condition with an oscillating parabolic-logarithmic profile, applied to the horn tip. This moving-boundary provides the situation in which the center of the horn tip vibrates stronger than that of the peripheral regions. The velocity field obtained by computational fluid dynamic was in a reasonably good agreement with the PIV results. The moving boundary model is more accurate since it better approximates the movement of the horn tip in the ultrasonic assisted process. From an optimizing point of view, the model with the new moving boundary is more suitable than the conventional models for design purposes because the displacement magnitude of the horn tip is the only fitting parameter. After developing and validating the numerical model, the model was utilized to predict various quantities such as cavitation zone, pressure field and stream function that are not experimentally feasible to measure. Copyright © 2016 Elsevier B.V. All rights reserved.

  7. Theorizing Headteacher Socialization from a Role Boundary Perspective

    Science.gov (United States)

    Cottrell, Matthew; James, Chris

    2016-01-01

    The experience of headteacher socialization has been described as challenging and often traumatic for new headteachers. The research reported in this article provides a theoretical explanation of that experience by analysing the socialization of new primary school headteachers in England from a role boundary perspective. The role boundary is the…

  8. Structure and properties of grain boundaries

    Science.gov (United States)

    Balluffi, R. W.; Bristowe, P. D.

    1984-03-01

    Results were obtained in the following areas: determination of relative grain boundary energies by the rotating crystallite method; simple structural unit model for core dependent properties of tilt boundaries; twist boundary energies for metals with long ranged pairwise interatomic potentials; structural unit/grain boundary dislocation model for grain boundary structure; detection of expansion of boundaries using diffraction; effect of secondary relaxations on diffraction from high-(SIGMA) 001 twist boundaries; and mechanism of grain boundary migration.

  9. Negotiating Cluster Boundaries

    DEFF Research Database (Denmark)

    Giacomin, Valeria

    2017-01-01

    Palm oil was introduced to Malay(si)a as an alternative to natural rubber, inheriting its cluster organizational structure. In the late 1960s, Malaysia became the world’s largest palm oil exporter. Based on archival material from British colonial institutions and agency houses, this paper focuses...... on the governance dynamics that drove institutional change within this cluster during decolonization. The analysis presents three main findings: (i) cluster boundaries are defined by continuous tug-of-war style negotiations between public and private actors; (ii) this interaction produces institutional change...... within the cluster, in the form of cumulative ‘institutional rounds’ – the correction or disruption of existing institutions or the creation of new ones; and (iii) this process leads to a broader inclusion of local actors in the original cluster configuration. The paper challenges the prevalent argument...

  10. Public Computation & Boundary Play

    CERN Document Server

    Sengupta, Pratim

    2016-01-01

    In this paper, we introduce 'public computation' as a genre of learning environments that can be used to radically broaden public participation in authentic, computation-enabled STEM disciplinary practices. Our paradigmatic approach utilizes open source software designed for professional scientists, engineers and digital artists, and situates them in an undiluted form, alongside live and archived expert support, in a public space. We present a case study of DigiPlay, a prototypical public computation space we designed at the University of Calgary, where users can interact directly with scientific simulations as well as the underlying open source code using an array of massive multi- touch screens. We argue that in such a space, public interactions with the code can be thought of as boundary work and play, through which public participation becomes legitimate scientific act, as the public engages in scientific creation through truly open-ended explorations with the code.

  11. Challenging the Boundaries

    DEFF Research Database (Denmark)

    Nørgaard, Nina

    2004-01-01

    to explore in the study and teaching of foreign languages. Not only may linguistics and literature be employed to shed light on each other, the insights gained may furthermore prove useful in a broader context in our foreign language studies. The article begins with a brief introduction to literary...... linguistics in general and to Hallidayan linguistics in particular. The theoretical framework thus laid out, it is exemplified how Halliday's theory of language may be employed in the analysis of literature. The article concludes by considering the possible status of literary linguistics in a broader......To many people, challenging the boundaries between the traditional disciplines in foreign language studies means doing cultural studies. The aim of this article is to pull in a different direction by suggesting how the interface between linguistics and literature may be another fertile field...

  12. The Plasmasphere Boundary Layer

    Directory of Open Access Journals (Sweden)

    D. L. Carpenter

    2004-12-01

    Full Text Available As an inner magnetospheric phenomenon the plasmapause region is of interest for a number of reasons, one being the occurrence there of geophysically important interactions between the plasmas of the hot plasma sheet and of the cool plasmasphere. There is a need for a conceptual framework within which to examine and discuss these interactions and their consequences, and we therefore suggest that the plasmapause region be called the Plasmasphere Boundary Layer, or PBL. Such a term has been slow to emerge because of the complexity and variability of the plasma populations that can exist near the plasmapause and because of the variety of criteria used to identify the plasmapause in experimental data. Furthermore, and quite importantly in our view, a substantial obstacle to the consideration of the plasmapause region as a boundary layer has been the longstanding tendency of textbooks on space physics to limit introductory material on the plasmapause phenomenon to zeroth order descriptions in terms of ideal MHD theory, thus implying that the plasmasphere is relatively well understood. A textbook may introduce the concept of shielding of the inner magnetosphere from perturbing convection electric fields, but attention is not usually paid to the variety of physical processes reported to occur in the PBL, such as heating, instabilities, and fast longitudinal flows, processes which must play roles in plasmasphere dynamics in concert with the flow regimes associated with the major dynamo sources of electric fields. We believe that through the use of the PBL concept in future textbook discussions of the plasmasphere and in scientific communications, much progress can be made on longstanding questions about the physics involved in the formation of the plasmapause and in the cycles of erosion and recovery of the plasmasphere. Key words. Magnetospheric physics (plasmasphere; plasma convection; MHD waves and instabilities

  13. The Plasmasphere Boundary Layer

    Directory of Open Access Journals (Sweden)

    D. L. Carpenter

    2004-12-01

    Full Text Available As an inner magnetospheric phenomenon the plasmapause region is of interest for a number of reasons, one being the occurrence there of geophysically important interactions between the plasmas of the hot plasma sheet and of the cool plasmasphere. There is a need for a conceptual framework within which to examine and discuss these interactions and their consequences, and we therefore suggest that the plasmapause region be called the Plasmasphere Boundary Layer, or PBL. Such a term has been slow to emerge because of the complexity and variability of the plasma populations that can exist near the plasmapause and because of the variety of criteria used to identify the plasmapause in experimental data. Furthermore, and quite importantly in our view, a substantial obstacle to the consideration of the plasmapause region as a boundary layer has been the longstanding tendency of textbooks on space physics to limit introductory material on the plasmapause phenomenon to zeroth order descriptions in terms of ideal MHD theory, thus implying that the plasmasphere is relatively well understood. A textbook may introduce the concept of shielding of the inner magnetosphere from perturbing convection electric fields, but attention is not usually paid to the variety of physical processes reported to occur in the PBL, such as heating, instabilities, and fast longitudinal flows, processes which must play roles in plasmasphere dynamics in concert with the flow regimes associated with the major dynamo sources of electric fields. We believe that through the use of the PBL concept in future textbook discussions of the plasmasphere and in scientific communications, much progress can be made on longstanding questions about the physics involved in the formation of the plasmapause and in the cycles of erosion and recovery of the plasmasphere.

    Key words. Magnetospheric physics (plasmasphere; plasma convection; MHD waves and instabilities

  14. Good Health For the Holidays!

    Science.gov (United States)

    Skip Navigation Bar Home Current Issue Past Issues Good Health For the Holidays! Past Issues / Fall 2007 Table ... to-date Web site for every medical and health question. Healthy families know that good medical information should be a part of everyone's ...

  15. Transplantation as an abstract good

    DEFF Research Database (Denmark)

    Hoeyer, Klaus; Jensen, Anja Marie Bornø; Olejaz, Maria

    2015-01-01

    a more general salience in the organ transplant field by way of facilitating a perception of organ transplantation as an abstract moral good rather than a specific good for specific people. Furthermore, we suggest that multiple forms of ignorance sustain each other: a desire for ignorance with respect...

  16. Some remarks on good sets

    Indian Academy of Sciences (India)

    It is shown that (1) if a good set has finitely many related components, then they are full, (2) loops correspond one-to-one to extreme points of a convex set. Some other properties of good sets are discussed. Author Affiliations. K Gowri Navada1. Department of Mathematics, University College, Mangalore University, ...

  17. Pricing strategies for information goods

    Indian Academy of Sciences (India)

    Furthermore, sellers of these information goods are increasingly using bundling and versioning strategies to appropriate a greater share of the surplus. This paper examines recent research on pricing of information goods with particular focus on customisation, bundling and versioning strategies adopted by information ...

  18. The Information Geometry of Sparse Goodness-of-Fit Testing

    Directory of Open Access Journals (Sweden)

    Paul Marriott

    2016-11-01

    Full Text Available This paper takes an information-geometric approach to the challenging issue of goodness-of-fit testing in the high dimensional, low sample size context where—potentially—boundary effects dominate. The main contributions of this paper are threefold: first, we present and prove two new theorems on the behaviour of commonly used test statistics in this context; second, we investigate—in the novel environment of the extended multinomial model—the links between information geometry-based divergences and standard goodness-of-fit statistics, allowing us to formalise relationships which have been missing in the literature; finally, we use simulation studies to validate and illustrate our theoretical results and to explore currently open research questions about the way that discretisation effects can dominate sampling distributions near the boundary. Novelly accommodating these discretisation effects contrasts sharply with the essentially continuous approach of skewness and other corrections flowing from standard higher-order asymptotic analysis.

  19. Public Goods and State Services

    Directory of Open Access Journals (Sweden)

    Ignatova T.V.

    2015-09-01

    Full Text Available The article argues that state services are classified into two groups depending on the level of market mechanism use: public services and private services. These services have different characteristics: individual choice of consumption, type and quality of goods, financing, institutional regulation, decision-making subject, external effects, opportunity of effects control. The mechanism of public state services regulation is based on the influence on formal institutes, while the mechanism of private state services regulation is based on informal institutes. Joint mechanism of both types of state services provision includes the procedures of standartization and regulatory activity implying the provision of services by “one stop” principle and minimization of consumer - agent contacts. The optimization of services rendering process and their quality improvement are ensured by administrative regulations which establish strict standards of public service provided by the bodies of executive power and subordinate organizations The means of institutional regulation allow inclusion of market elements but on the condition of state control that ensures stimulation of public institutes. During the process of market institutes initialization in the sphere of state services rendering to government bodies, it is necessary to consider their dependence on marginal profits of one or another institute. In the long-term prospect those institutes got a foothold in the market that strengthen and encompass marginal effect for all individuals under the growth of individuals who observe the rules and restrictions. The activities organized by these institutes deserve positive response on behalf of the majority of individuals and, therefore there is no need in enforcement and violence in order to keep rules and restrictions. In the sphere of state and municipal services we can find the example of services provided in the scope of free contraction, in particular the

  20. Grain boundary melting in ice

    OpenAIRE

    Thomson, E. S.; Hansen-Goos, Hendrik; Wilen, L. A.; Wettlaufer, J. S.

    2012-01-01

    We describe an optical scattering study of grain boundary premelting in water ice. Ubiquitous long ranged attractive polarization forces act to suppress grain boundary melting whereas repulsive forces originating in screened Coulomb interactions and classical colligative effects enhance it. The liquid enhancing effects can be manipulated by adding dopant ions to the system. For all measured grain boundaries this leads to increasing premelted film thickness with increasing electrolyte concentr...

  1. Conformal boundaries of warped products

    DEFF Research Database (Denmark)

    Kokkendorff, Simon Lyngby

    2006-01-01

    In this note we prove a result on how to determine the conformal boundary of a type of warped product of two length spaces in terms of the individual conformal boundaries. In the situation, that we treat, the warping and conformal distortion functions are functions of distance to a base point....... The result is applied to produce examples of CAT(0)-spaces, where the conformal and ideal boundaries differ in interesting ways....

  2. The Boundary Function Method. Fundamentals

    Science.gov (United States)

    Kot, V. A.

    2017-03-01

    The boundary function method is proposed for solving applied problems of mathematical physics in the region defined by a partial differential equation of the general form involving constant or variable coefficients with a Dirichlet, Neumann, or Robin boundary condition. In this method, the desired function is defined by a power polynomial, and a boundary function represented in the form of the desired function or its derivative at one of the boundary points is introduced. Different sequences of boundary equations have been set up with the use of differential operators. Systems of linear algebraic equations constructed on the basis of these sequences allow one to determine the coefficients of a power polynomial. Constitutive equations have been derived for initial boundary-value problems of all the main types. With these equations, an initial boundary-value problem is transformed into the Cauchy problem for the boundary function. The determination of the boundary function by its derivative with respect to the time coordinate completes the solution of the problem.

  3. Analysis of turbulent boundary layers

    CERN Document Server

    Cebeci, Tuncer

    1974-01-01

    Analysis of Turbulent Boundary Layers focuses on turbulent flows meeting the requirements for the boundary-layer or thin-shear-layer approximations. Its approach is devising relatively fundamental, and often subtle, empirical engineering correlations, which are then introduced into various forms of describing equations for final solution. After introducing the topic on turbulence, the book examines the conservation equations for compressible turbulent flows, boundary-layer equations, and general behavior of turbulent boundary layers. The latter chapters describe the CS method for calculati

  4. What is Good University Financial Management?

    Science.gov (United States)

    Taylor, Mark P.

    2013-01-01

    In the current and foreseeable harsh UK higher education environment, aspiring to best-practice financial management will be key to ensuring the prosperity--and indeed the survival--of any university. In this article I argue that good university financial management should provide stability to the institution, allow for investment as well as…

  5. 75 FR 8699 - Good Neighbor Environmental Board

    Science.gov (United States)

    2010-02-25

    ... and private organizations to provide advice on environmental and infrastructure issues along the U.S... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY Good Neighbor Environmental Board AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of...

  6. A corrected solid boundary treatment method for Smoothed Particle Hydrodynamics

    Science.gov (United States)

    Chen, Yun-sai; Zheng, Xing; Jin, Shan-qin; Duan, Wen-yang

    2017-04-01

    Smoothed Particle Hydrodynamics method (SPH) has a good adaptability for simulating of free surface flow problems. However, there are some shortcomings of SPH which are still in open discussion. This paper presents a corrected solid boundary handling method for weakly compressible SPH. This improved method is very helpful for numerical stability and pressure distribution. Compared with other solid boundary handling methods, this corrected method is simpler for virtual ghost particle interpolation and the ghost particle evaluation relationship is clearer. Several numerical tests are given, like dam breaking, solitary wave impact and sloshing tank waves. The results show that the corrected solid boundary processing method can recover the spurious oscillations of pressure distribution when simulating the problems with complex geometry boundary.

  7. Food for thought: pretty good multispecies yield

    DEFF Research Database (Denmark)

    Rindorf, Anna; Dichmont, C. M.; Levin, P.S.

    2017-01-01

    MSY principles for marine fisheries management reflect a focus on obtaining continued high catches to provide food and livelihoods for humanity, while not compromising ecosystems. However, maintaining healthy stocks to provide the maximum sustainable yield on a single-species basis does not ensure...... to the principles of MSY, it allows the consideration of other aspects to be included in operational management advice in both data-rich and data-limited situations. PGMY furthermore provides a way to integrate advice across stocks, avoiding clearly infeasible management combinations, and thereby hopefully...... that broader ecosystem, economic, and social objectives are addressed. We investigate how the principles of a “pretty good yield” range of fishing mortalities assumed to provide >95% of the average yield for a single stock can be expanded to a pretty good multispecies yield (PGMY) space and further to pretty...

  8. Symbolic Boundary Work in Schools: Demarcating and Denying Ethnic Boundaries

    Science.gov (United States)

    Tabib-Calif, Yosepha; Lomsky-Feder, Edna

    2014-01-01

    This article examines the symbolic boundary work that is carried out at a school whose student population is heterogeneous in terms of ethnicity and class. Based on ethnography, the article demonstrates how the school's staff seeks to neutralize ethnic boundaries and their accompanying discourse, while the pupils try to bring ethnic…

  9. 7 CFR 1599.7 - Transportation of goods.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Transportation of goods. 1599.7 Section 1599.7... Transportation of goods. (a) Shipments of donated commodities are subject to the requirements of 46 U.S.C. 55305... other goods such as bags that may be provided by FAS under the McGovern-Dole Program will be acquired...

  10. 7 CFR 1499.7 - Transportation of goods.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Transportation of goods. 1499.7 Section 1499.7... Transportation of goods. (a) Shipments of donated commodities are subject to the requirements of 46 U.S.C. 55305... other goods such as bags that may be provided by CCC under FFPr will be acquired under a specific...

  11. Collaboration in Healthcare Through Boundary Work and Boundary Objects

    DEFF Research Database (Denmark)

    Meier, Ninna

    2015-01-01

    This article contributes to our understanding of how boundary work is practiced in healthcare settings. Previous studies have shown how boundaries are constantly changing, multiple, and co-existing, and can also be relatively stable cognitive and social distinctions between individuals and groups....... In highly specialized, knowledge-intensive organizations such as healthcare organizations, organizational, professional, and disciplinary boundaries mark the formal structure and division of work. Collaboration and coordination across these boundaries are essential to minimizing gaps in patient care......, but also may be challenging to achieve in practice. By drawing on data from an ethnographic study of two hospital wards, this article investigates practices of cross-disciplinary and professional collaboration and adds to our knowledge of how this kind of boundary work is produced in context. Moreover...

  12. Coulomb-gas approach for boundary conformal field theory

    Energy Technology Data Exchange (ETDEWEB)

    Kawai, Shinsuke E-mail: kawai@thphys.ox.ac.uk

    2002-05-20

    We present a construction of boundary states based on the Coulomb-gas formalism of Dotsenko and Fateev. It is shown that Neumann-like coherent states on the charged bosonic Fock space provide a set of boundary states with consistent modular properties. Such coherent states are characterised by the boundary charges, which are related to the number of bulk screening operators through the charge neutrality condition. We illustrate this using the Ising model as an example, and show that all of its known consistent boundary states are reproduced in our formalism. This method applies to c<1 minimal conformal theories and provides an unified computational tool for studying boundary states of such theories.

  13. Objective constraints of figural goodness

    Directory of Open Access Journals (Sweden)

    Marković Slobodan S.

    2002-01-01

    Full Text Available The effects of uniformity, compactness and symmetry on pattern goodness estimates were evaluated in three experiments. Ss were asked to choose the pattern which looks the best in respect to other patterns from given set. Patterns within sets differed from each other in uniformity (Experiment 1, compactness (Experiment 2 and symmetry (Experiment 3. Regression analyses indicated that symmetry was a single good predictor of the frequency of good pattern choice. This result is connected with Koffka's concept of perceptual economy: uniformity and compactness have perceptual advantages in the restricted situations (low energy disposal, while symmetry prevails in unrestricted conditions (high energy disposal.

  14. Good Towers of Function Fields

    DEFF Research Database (Denmark)

    Bassa, Alp; Beelen, Peter; Nguyen, Nhut

    2014-01-01

    In this paper, we will give an overview of known and new techniques on how one can obtain explicit equations for candidates of good towers of function fields. The techniques are founded in modular theory (both the classical modular theory and the Drinfeld modular theory). In the classical modular...... setup, optimal towers can be obtained, while in the Drinfeld modular setup, good towers over any non-prime field may be found. We illustrate the theory with several examples, thus explaining some known towers as well as giving new examples of good explicitly defined towers of function fields....

  15. Boundary-Layer & health

    Science.gov (United States)

    Costigliola, V.

    2010-09-01

    It has long been known that specific atmospheric processes, such as weather and longer-term climatic fluctuations, affect human health. The biometeorological literature refers to this relationship as meteorotropism, defined as a change in an organism that is correlated with a change in atmospheric conditions. Plenty of (patho)physiological functions are affected by those conditions - like the respiratory diseases - and currently it is difficult to put any limits for pathologies developed in reply. Nowadays the importance of atmospheric boundary layer and health is increasingly recognised. A number of epidemiologic studies have reported associations between ambient concentrations of air pollution, specifically particulate pollution, and adverse health effects, even at the relatively low concentrations of pollution found. Since 1995 there have been over twenty-one studies from four continents that have explicitly examined the association between ambient air pollutant mixes and daily mortality. Statistically significant and positive associations have been reported in data from various locations around the world, all with varying air pollutant concentrations, weather conditions, population characteristics and public health policies. Particular role has been given to atmospheric boundary layer processes, the impact of which for specific patient-cohort is, however, not well understood till now. Assessing and monitoring air quality are thus fundamental to improve Europe's welfare. One of current projects run by the "European Medical Association" - PASODOBLE will develop and demonstrate user-driven downstream information services for the regional and local air quality sectors by combining space-based and in-situ data with models in 4 thematic service lines: - Health community support for hospitals, pharmacies, doctors and people at risk - Public information for regions, cities, tourist industry and sporting event organizers - Compliance monitoring support on particulate

  16. What makes a good experiment ? reasons and roles in science

    CERN Document Server

    Franklin, Allan

    2016-01-01

    What makes a good experiment? Although experimental evidence plays an essential role in science, as Franklin argues, there is no algorithm or simple set of criteria for ranking or evaluating good experiments, and therefore no definitive answer to the question. Experiments can, in fact, be good in any number of ways: conceptually good, methodologically good, technically good, and pedagogically important. And perfection is not a requirement: even experiments with incorrect results can be good, though they must, he argues, be methodologically good, providing good reasons for belief in their results. Franklin revisits the same important question he posed in his 1981 article in the British Journal for the Philosophy of Science, when it was generally believed that the only significant role of experiment in science was to test theories. But experiments can actually play a lot of different roles in science—they can, for example, investigate a subject for which a theory does not exist, help to articulate an existing ...

  17. Paint and Click: Unified Interactions for Image Boundaries

    Energy Technology Data Exchange (ETDEWEB)

    Summa, B. [Univ. of Utah, Salt Lake City, UT (United States). Scientific Computing and Imaging (SCI) Inst.; Gooch, A. A. [Univ. of Utah, Salt Lake City, UT (United States). Scientific Computing and Imaging (SCI) Inst.; Scorzelli, G. [Univ. of Utah, Salt Lake City, UT (United States). Scientific Computing and Imaging (SCI) Inst.; Pascucci, V. [Univ. of Utah, Salt Lake City, UT (United States). Scientific Computing and Imaging (SCI) Inst.

    2015-06-22

    Image boundaries are a fundamental component of many interactive digital photography techniques, enabling applications such as segmentation, panoramas, and seamless image composition. Interactions for image boundaries often rely on two complementary but separate approaches: editing via painting or clicking constraints. In this work, we provide a novel, unified approach for interactive editing of pairwise image boundaries that combines the ease of painting with the direct control of constraints. Rather than a sequential coupling, this new formulation allows full use of both interactions simultaneously, giving users unprecedented flexibility for fast boundary editing. To enable this new approach, we provide technical advancements. In particular, we detail a reformulation of image boundaries as a problem of finding cycles, expanding and correcting limitations of the previous work. Our new formulation provides boundary solutions for painted regions with performance on par with state-of-the-art specialized, paint-only techniques. In addition, we provide instantaneous exploration of the boundary solution space with user constraints. Finally, we provide examples of common graphics applications impacted by our new approach.

  18. Transportation of Dangerous Goods: Turkey Model

    Directory of Open Access Journals (Sweden)

    Murat Şencan

    2017-12-01

    Full Text Available The shortcomings in the implementation of hazardous substances transport in the world and in our country lead to very serious hazards. These problems lead to life, property and very serious environmental disasters. This is not only a matter of transportation, but also of the chemistry, textile and fuel industries. This study provides information on the legislation on dangerous goods transport in Turkey. It also contains technical information on hazardous substances, following the search of the relevant literature for the province of hazardous goods.

  19. Good Governance, Welfare, and Transformation

    Directory of Open Access Journals (Sweden)

    Hans-Jürgen Wagener

    2004-06-01

    Full Text Available Market conforming institutions are a precondition for a thriving and stable economy. This is the upshot of the Washington consensus or, of somewhat earlier origin, the “Eucken hypothesis”. Another hypothesis of Eucken has it that market conforming institutions are the product of a strong state. However, more general and more important than the strong state is good governance. In this paper I refer to it as the “Lorenzetti hypothesis”. The paper tries to figure out the mechanisms by which good governance and economic order influence economic outcome. Then the two hypotheses are tested for two aspects of economic outcome: productivity as measured by GNP per capita over a wide range of countries and transformation success as measured by GNP growth over the European transformation countries. The tests confirm the theoretical expectation that good governance is more important than good order

  20. What makes a life good?

    Science.gov (United States)

    King, L A; Napa, C K

    1998-07-01

    Two studies examined folk concepts of the good life. Samples of college students (N = 104) and community adults (N = 264) were shown a career survey ostensibly completed by a person rating his or her occupation. After reading the survey, participants judged the desirability and moral goodness of the respondent's life, as a function of the amount of happiness, meaning in life, and wealth experienced. Results revealed significant effects of happiness and meaning on ratings of desirability and moral goodness. In the college sample, individuals high on all 3 independent variables were judged as likely to go to heaven. In the adult sample, wealth was also related to higher desirability. Results suggest a general perception that meaning in life and happiness are essential to the folk concept of the good life, whereas money is relatively unimportant.

  1. Seismic link at plate boundary

    Indian Academy of Sciences (India)

    transfer between two major faults, and parallel to the geothermal area extension. 1. Introduction. Plate boundaries are the zones where most earth dynamics are focussed. The complexity of tectonic boundaries draws attention to them as the largest earthquakes are felt in these areas and they elicit the natural hazard of ...

  2. Exclusion Process with Slow Boundary

    Science.gov (United States)

    Baldasso, Rangel; Menezes, Otávio; Neumann, Adriana; Souza, Rafael R.

    2017-06-01

    We study the hydrodynamic and the hydrostatic behavior of the simple symmetric exclusion process with slow boundary. The term slow boundary means that particles can be born or die at the boundary sites, at a rate proportional to N^{-θ }, where θ > 0 and N is the scaling parameter. In the bulk, the particles exchange rate is equal to 1. In the hydrostatic scenario, we obtain three different linear profiles, depending on the value of the parameter θ ; in the hydrodynamic scenario, we obtain that the time evolution of the spatial density of particles, in the diffusive scaling, is given by the weak solution of the heat equation, with boundary conditions that depend on θ . If θ \\in (0,1), we get Dirichlet boundary conditions, (which is the same behavior if θ =0, see Farfán in Hydrostatics, statical and dynamical large deviations of boundary driven gradient symmetric exclusion processes, 2008); if θ =1, we get Robin boundary conditions; and, if θ \\in (1,∞), we get Neumann boundary conditions.

  3. Fuzzy Boundary and Fuzzy Semiboundary

    OpenAIRE

    Athar, M.; Ahmad, B.

    2008-01-01

    We present several properties of fuzzy boundary and fuzzy semiboundary which have been supported by examples. Properties of fuzzy semi-interior, fuzzy semiclosure, fuzzy boundary, and fuzzy semiboundary have been obtained in product-related spaces. We give necessary conditions for fuzzy continuous (resp., fuzzy semicontinuous, fuzzy irresolute) functions. Moreover, fuzzy continuous (resp., fuzzy semicontinuous, fuzzy irresolute) functions have been characterized via fuzzy...

  4. Nucleation of small angle boundaries

    CSIR Research Space (South Africa)

    Nabarro, FRN

    1996-12-01

    Full Text Available The internal stresses induced by the strain gradients in an array of lattice cells delineated by low-angle dislocation boundaries are partially relieved by the creation of new low-angle boundaries. This is shown to be a first-order transition...

  5. How Firms Make Boundary Decisions

    DEFF Research Database (Denmark)

    Dobrajska, Magdalena; Billinger, Stephan; Becker, Markus

    2014-01-01

    We report findings from an analysis of 234 firm boundary decisions that a manufacturing firm has made during a 10 year period. Extensive interviews with all major decision makers located both at the headquarters and subsidiaries allow us to examine (a) who was involved in each boundary decision...

  6. Good acoustics central to recovery.

    Science.gov (United States)

    Budd, Richard

    2009-04-01

    Good acoustic conditions in hospitals and other healthcare facilities are known not only to benefit patients by creating an environment that facilitates rest, sleeping, consultation and treatment, but also clinical and nursing staff. At the recent Healthcare Estates conference, Richard Budd of acoustic engineering and noise and vibration consultants Sound Research Laboratories, discussed the revised guidance on good acoustic design in a recently published Health Technical Memorandum, HTM 08-01-Acoustics.

  7. Ethnic Goods and Immigrant Assimilation

    OpenAIRE

    Abdulloev, Ilhom; Gil S. Epstein; Ira N. Gang

    2014-01-01

    Some immigrants try to keep their ethnicity hidden while others become ever deeply more mired in their home culture. We argue that among immigrants this struggle manifests itself in the ethnic goods they choose to consume. Different types of ethnic goods have vastly different effects on immigrant assimilation. We develop a simple theoretical model useful for capturing the consequences of this struggle, illustrating it with examples of Central Asian assimilation into the Muscovite economy.

  8. Counterfeit Goods and Income Inequality

    OpenAIRE

    Stefania Scandizzo

    2001-01-01

    This paper examines the effect of counterfeit goods in a world where consumers are differentiated by level of income and innovation is quality enhancing. Counterfeit goods are defined as products with the same characteristics as “originals”, but of lower quality. The effect of imitation on firms’ profits and consumer welfare depends on the distribution of income within the country. In particular, the greater the level of income inequality the larger the increase in consumer welfare due to the...

  9. Memoir of "a good daughter".

    Science.gov (United States)

    Brown, Carolyn T

    2013-01-01

    This short memoir reflects on the experience of a "good daughter" caring for both parents through their late aging and deaths. The memoir contemplates their personalities as expressed in their aging and the "good daughter's" experience in the death room. Those on a similar journey, whether as travelers, guides, or witnesses, may draw comfort, perhaps reassurance, from this account. Copyright © 2013. Published by Elsevier Inc.

  10. Good Conduct in the Sciences

    DEFF Research Database (Denmark)

    Hansen, Vagn Lundsgaard

    2006-01-01

    What is scientific dishonesty? How to handle the problem? How to prevent it? These three questions are discussed in an international perspective, focusing on ways of achieving and maintaining good conduct in the sciences.......What is scientific dishonesty? How to handle the problem? How to prevent it? These three questions are discussed in an international perspective, focusing on ways of achieving and maintaining good conduct in the sciences....

  11. Relational goods, sociability, and happiness

    OpenAIRE

    Becchetti, L.; Pelloni, A.; F. Rossetti

    2008-01-01

    The role of sociability and relational goods has generally been neglected in the formulation of standard economics textbook preferences. Our findings show that relational goods have significant and positive effects on self declared life satisfaction, net of the impact of other concurring factors. We also document that such effects persist when the equally significant inverse causality nexus is taken into account. This implies that a more intense relational life enhances life satisfaction and,...

  12. Private Financing of Public Goods by Means of 'Eco-Goods' Schemes

    DEFF Research Database (Denmark)

    Ueda, Yoshifumi; Wegener, Andreas; Svendsen, Gert Tinggaard

    2010-01-01

    With a view to applying to the problem of collective action for the global commons, we analyze a three-stage game model where public goods are provided by the costly leadership of a social entrepreneur for undertaking 'eco-goods' scheme. We derive (i) the conclusion that the social entrepreneur can...... finance more for the collective action under not-for-profit constraint than without the constraint, and (ii) the conditions under which he prefers the not-for-profit constraint on a rational basis. The main results are applied to some social experiments on the natural common-pools of a public-goods nature...

  13. Depreciation of public goods in spatial public goods games

    Science.gov (United States)

    Shi, Dong-Mei; Zhuang, Yong; Li, Yu-Jian; Wang, Bing-Hong

    2011-10-01

    In real situations, the value of public goods will be reduced or even lost because of external factors or for intrinsic reasons. In this work, we investigate the evolution of cooperation by considering the effect of depreciation of public goods in spatial public goods games on a square lattice. It is assumed that each individual gains full advantage if the number of the cooperators nc within a group centered on that individual equals or exceeds the critical mass (CM). Otherwise, there is depreciation of the public goods, which is realized by rescaling the multiplication factor r to (nc/CM)r. It is shown that the emergence of cooperation is remarkably promoted for CM > 1 even at small values of r, and a global cooperative level is achieved at an intermediate value of CM = 4 at a small r. We further study the effect of depreciation of public goods on different topologies of a regular lattice, and find that the system always reaches global cooperation at a moderate value of CM = G - 1 regardless of whether or not there exist overlapping triangle structures on the regular lattice, where G is the group size of the associated regular lattice.

  14. Public Goods, Merit Goods, and the Relation Between Private and Government Consumption

    OpenAIRE

    Fiorito, Riccardo; Tryphon KOLLINTZAS

    2002-01-01

    In this Paper, we investigate the relation between public and private consumption, by constructing a general government spending dataset, by function, for twelve European Union countries. In particular, we split government consumption into two categories. The first category includes defence, public order, and justice ('public goods'). The second category includes health, education, and other services that could have been provided privately ('merit goods'). Equations from a relatively general ...

  15. Prediction of dislocation boundary characteristics

    DEFF Research Database (Denmark)

    Winther, Grethe

    Plastic deformation of both fcc and bcc metals of medium to high stacking fault energy is known to result in dislocation patterning in the form of cells and extended planar dislocation boundaries. The latter align with specific crystallographic planes, which depend on the crystallographic....... Crystal plasticity calculations combined with the hypothesis that these boundaries separate domains with local differences in the slip system activity are introduced to address precise prediction of the experimentally observed boundaries. The presentation will focus on two cases from fcc metals...... orientation of the grain [1]. For selected boundaries it has been experimentally verified that the boundaries consist of fairly regular networks of dislocations, which come from the active slip systems [2]. The networks have been analyzed within the framework of Low-Energy-Dislocation-Structures (LEDS...

  16. Boundary Drawing in Clinical Work

    DEFF Research Database (Denmark)

    Meier, Ninna

    The aim of this paper is to show how health care professionals temporarily dissolve and redraw boundaries in their everyday work, in order to coordinate clinical work and facilitate collaboration in patient pathways. Boundaries are social constructions that help us make sense of our complex, social...... world. In health care, formal boundaries are important distinctions that separate health care practitioners into medical specialties, professions and organizational departments. But clinical work also relies on the ability of health care practitioners to collaborate around patients in formal...... arrangements or emergent, temporary teams. Focusing on the cognitive and social boundaries we draw to establish identity and connection (to a profession, team or person) the paper shows how health care professionals can use inter-personal relationships to temporarily dismiss formal boundaries. By redrawing...

  17. Distributed Tuning of Boundary Resources

    DEFF Research Database (Denmark)

    Eaton, Ben; Elaluf-Calderwood, Silvia; Sørensen, Carsten

    2015-01-01

    in the context of a paradoxical tension between the logic of generative and democratic innovations and the logic of infrastructural control. Boundary resources play a critical role in managing the tension as a firm that owns the infrastructure can secure its control over the service system while independent...... firms can participate in the service system. In this study, we explore the evolution of boundary resources. Drawing on Pickering’s (1993) and Barrett et al.’s (2012) conceptualizations of tuning, the paper seeks to forward our understanding of how heterogeneous actors engage in the tuning of boundary...... resources within Apple’s iOS service system. We conduct an embedded case study of Apple’s iOS service system with an in-depth analysis of 4,664 blog articles concerned with 30 boundary resources covering 6 distinct themes. Our analysis reveals that boundary resources of service systems enabled by digital...

  18. Brain response to prosodic boundary cues depends on boundary position

    Directory of Open Access Journals (Sweden)

    Julia eHolzgrefe

    2013-07-01

    Full Text Available Prosodic information is crucial for spoken language comprehension and especially for syntactic parsing, because prosodic cues guide the hearer’s syntactic analysis. The time course and mechanisms of this interplay of prosody and syntax are not yet well understood. In particular, there is an ongoing debate whether local prosodic cues are taken into account automatically or whether they are processed in relation to the global prosodic context in which they appear. The present study explores whether the perception of a prosodic boundary is affected by its position within an utterance. In an event-related potential (ERP study we tested if the brain response evoked by the prosodic boundary differs when the boundary occurs early in a list of three names connected by conjunctions (i.e., after the first name as compared to later in the utterance (i.e., after the second name. A closure positive shift (CPS — marking the processing of a prosodic phrase boundary — was elicited only for stimuli with a late boundary, but not for stimuli with an early boundary. This result is further evidence for an immediate integration of prosodic information into the parsing of an utterance. In addition, it shows that the processing of prosodic boundary cues depends on the previously processed information from the preceding prosodic context.

  19. Two decades of temporal change of Earth's inner core boundary

    National Research Council Canada - National Science Library

    Yao, Jiayuan; Sun, Li; Wen, Lianxing

    2015-01-01

    We report two decades of changing behavior of the Earth's inner core boundary (ICB), which provides the simplest explanation for the observed temporal change of the compressional seismic waves that are reflected from the ICB...

  20. Orbiter Boundary Layer Transition Prediction Tool Enhancements

    Science.gov (United States)

    Berry, Scott A.; King, Rudolph A.; Kegerise, Michael A.; Wood, William A.; McGinley, Catherine B.; Berger, Karen T.; Anderson, Brian P.

    2010-01-01

    Updates to an analytic tool developed for Shuttle support to predict the onset of boundary layer transition resulting from thermal protection system damage or repair are presented. The boundary layer transition tool is part of a suite of tools that analyze the local aerothermodynamic environment to enable informed disposition of damage for making recommendations to fly as is or to repair. Using mission specific trajectory information and details of each d agmea site or repair, the expected time (and thus Mach number) of transition onset is predicted to help define proper environments for use in subsequent thermal and stress analysis of the thermal protection system and structure. The boundary layer transition criteria utilized within the tool were updated based on new local boundary layer properties obtained from high fidelity computational solutions. Also, new ground-based measurements were obtained to allow for a wider parametric variation with both protuberances and cavities and then the resulting correlations were calibrated against updated flight data. The end result is to provide correlations that allow increased confidence with the resulting transition predictions. Recently, a new approach was adopted to remove conservatism in terms of sustained turbulence along the wing leading edge. Finally, some of the newer flight data are also discussed in terms of how these results reflect back on the updated correlations.

  1. VT Designated Downtown Boundary

    Data.gov (United States)

    Vermont Center for Geographic Information — Downtown designation provides communities with financial incentives, training and technical assistance to support local efforts to restore historic buildings,...

  2. Controllable fatigue cracking mechanisms of copper bicrystals with a coherent twin boundary.

    Science.gov (United States)

    Li, L L; Zhang, Z J; Zhang, P; Wang, Z G; Zhang, Z F

    2014-03-26

    High-angle grain boundaries are always the preferential fatigue cracking sites, while the intrinsic fatigue cracking mechanism of coherent twin boundary remains elusive. Here we systematically investigate the fatigue cracking behaviours of copper bicrystals with a coherent twin boundary as their sole internal boundary. It is found with direct experimental evidence for the first time that, unlike the random grain boundaries, the cracking behaviour of the twin boundary strongly depends on its orientation with respect to the loading direction. When the twin boundary is parallel or perpendicular to the loading direction, the fatigue cracks nucleate along the slip bands preferentially; when it is inclined at an angle to the loading direction, the fatigue crack is especially apt to nucleate along the twin boundary first. The controllable fatigue cracking mechanisms of the twin boundary may provide new and important implications for the optimized interfacial design of the high-performance materials.

  3. Large-eddy simulation of separation and reattachment of a flat plate turbulent boundary layer

    KAUST Repository

    Cheng, W.

    2015-11-11

    © 2015 Cambridge University Press. We present large-eddy simulations (LES) of separation and reattachment of a flat-plate turbulent boundary-layer flow. Instead of resolving the near wall region, we develop a two-dimensional virtual wall model which can calculate the time- and space-dependent skin-friction vector field at the wall, at the resolved scale. By combining the virtual-wall model with the stretched-vortex subgrid-scale (SGS) model, we construct a self-consistent framework for the LES of separating and reattaching turbulent wall-bounded flows at large Reynolds numbers. The present LES methodology is applied to two different experimental flows designed to produce separation/reattachment of a flat-plate turbulent boundary layer at medium Reynolds number Reθ based on the momentum boundary-layer thickness θ. Comparison with data from the first case at demonstrates the present capability for accurate calculation of the variation, with the streamwise co-ordinate up to separation, of the skin friction coefficient, Reθ, the boundary-layer shape factor and a non-dimensional pressure-gradient parameter. Additionally the main large-scale features of the separation bubble, including the mean streamwise velocity profiles, show good agreement with experiment. At the larger Reθ = 11000 of the second case, the LES provides good postdiction of the measured skin-friction variation along the whole streamwise extent of the experiment, consisting of a very strong adverse pressure gradient leading to separation within the separation bubble itself, and in the recovering or reattachment region of strongly-favourable pressure gradient. Overall, the present two-dimensional wall model used in LES appears to be capable of capturing the quantitative features of a separation-reattachment turbulent boundary-layer flow at low to moderately large Reynolds numbers.

  4. Video games: good, bad, or other?

    Science.gov (United States)

    Prot, Sara; McDonald, Katelyn A; Anderson, Craig A; Gentile, Douglas A

    2012-06-01

    Video games are a pervasive pastime among children and adolescents. The growing popularity of video games has instigated a debate among parents, researchers, video game producers, and policymakers concerning potential harmful and helpful effects of video games on children. This article provides an overview of research findings on the positive and negative effects of video games, thus providing an empirical answer to the question, are video games good or bad? The article also provides some guidelines to help pediatricians, parents, and other caregivers protect children from negative effects and to maximize positive effects of video games. Copyright © 2012 Elsevier Inc. All rights reserved.

  5. Boundaries of dreams, boundaries of dreamers: thin and thick boundaries as a new personality measure.

    Science.gov (United States)

    Hartmann, E

    1989-11-01

    Previous work by the author and his collaborators on frequent nightmare sufferers demonstrated that these people had striking personality characteristics which could be called "thin boundaries" in a number of different senses. In order to measure thin and thick boundaries, a 145-item questionnaire, the Boundary Questionnaire, has been developed which has now been taken by over 1,000 persons. Preliminary results are presented indicating that, as predicted a priori, several new groups of nightmare sufferers and groups of art students scored usually "thin," whereas a group of naval officers had usually "thick" boundaries. Overall, thinness on the Boundary Questionnaire correlated highly positively (r = .40) with frequency of dream recall and also significantly (r = .16) with length of sleep.

  6. Boundary conditions in conformal and integrable theories

    CERN Document Server

    Petkova, V B

    2000-01-01

    The study of boundary conditions in rational conformal field theories is not only physically important. It also reveals a lot on the structure of the theory ``in the bulk''. The same graphs classify both the torus and the cylinder partition functions and provide data on their hidden ``quantum symmetry''. The Ocneanu triangular cells -- the 3j-symbols of these symmetries, admit various interpretations and make a link between different problems.

  7. Homology in Electromagnetic Boundary Value Problems

    Directory of Open Access Journals (Sweden)

    Pellikka Matti

    2010-01-01

    Full Text Available We discuss how homology computation can be exploited in computational electromagnetism. We represent various cellular mesh reduction techniques, which enable the computation of generators of homology spaces in an acceptable time. Furthermore, we show how the generators can be used for setting up and analysis of an electromagnetic boundary value problem. The aim is to provide a rationale for homology computation in electromagnetic modeling software.

  8. Good Teachers, Good Schools: How to Create a Successful School

    Science.gov (United States)

    Hudson, David

    2009-01-01

    "Good schools think 'with' people and not 'to' people" argues David Hudson in this thought provoking practical guide for those wanting to bridge the gap between middle and senior management roles, and make a difference in their schools. Accessibly and engagingly written and packed with real-life examples, this book will prove essential…

  9. Optimal boundary control and boundary stabilization of hyperbolic systems

    CERN Document Server

    Gugat, Martin

    2015-01-01

    This brief considers recent results on optimal control and stabilization of systems governed by hyperbolic partial differential equations, specifically those in which the control action takes place at the boundary.  The wave equation is used as a typical example of a linear system, through which the author explores initial boundary value problems, concepts of exact controllability, optimal exact control, and boundary stabilization.  Nonlinear systems are also covered, with the Korteweg-de Vries and Burgers Equations serving as standard examples.  To keep the presentation as accessible as possible, the author uses the case of a system with a state that is defined on a finite space interval, so that there are only two boundary points where the system can be controlled.  Graduate and post-graduate students as well as researchers in the field will find this to be an accessible introduction to problems of optimal control and stabilization.

  10. Pressure balance boundaries in the dayside magnetosphere of Mars

    Science.gov (United States)

    Holmberg, M.; . André, N.; Modolo, R.; Andersson, L.; Mazelle, C.; Garnier, P.; Steckiewicz, M.; Halekas, J.

    2017-09-01

    We use data from the MAVEN and MEX spacecraft to study pressure balance boundaries in the Martian dayside magnetosphere. We use 15 orbit segments from year 2015 when MAVEN and MEX simultaneously were within SZAcomposition boundary (ICB), the photoelectron boundary (PEB), and the ionopause-like boundary. For quiet solar wind conditions a balance is found between the thermal pressure of the ionosphere and the magnetic pressure in the pile-up region, but crustal fields, that are difficult to differentiate from the piled up magnetic field at low altitudes, commonly provides a disturbing factor. The measurements also show that the pressure balance boundary is shifted from the ICB with around 0.05 RM, in agreement with earlier simulation results.

  11. The psychological aspect of goods

    Directory of Open Access Journals (Sweden)

    Rejmaneh Evžen

    2003-01-01

    Full Text Available The author, a psychologist from Prague, discusses the theory of consumption from the socio-political angle. He discusses in detail the double features of goods from the psychological point of view: a the material features and b nominal, notional features of goods. The latter (nominal feature has been especially emphasized, the one that is being transformed into a specific "image of goods". The author also analyses its influence upon the consumers' behavior, connecting it with advertising as well. Later on in the paper the author shifts his analysis to the process of creating new products and to the establishment of the new conception that would not deal any more with individual products but rather with a "field of requirements". The author emphasizes the importance of research. He considers that changes in the way of living considerably influence the formation of requirements which in its turn asks for specific marketing methods in satisfying the requirements.

  12. Attributes of a good nurse.

    Science.gov (United States)

    Aydin Er, Rahime; Sehiralti, Mine; Akpinar, Aslihan

    2017-03-01

    The opinions of students regarding the attributes of a good nurse can make a major contribution to the planning and the conducting of professional education. There are few studies which aim at identifying the qualifications of a good nurse from the perspectives of nursing students. To determine the opinions of first- and fourth-year nursing students concerning the 'attributes of a good nurse', and whether and how their views change depending on their year of study. Descriptive research. Participants and research context: This study was conducted in the nursing department of a vocational school of health in the 2010/2011 academic year. The study participants consisted of first-year and intern students. A survey form was used to identify characteristics of participants, and students were asked the following open-ended question about their opinions related to the attributes of a good nurse. Ethical considerations: The permission was taken from the school administration. Informed consent was obtained, and anonymity was ensured for participating students. A total of 120 students participated in this study. Most frequently expressed attributes were 'professional competence' in first-year and 'responsibility' in fourth-year students. While first-year students placed a greater emphasis on the attributes of 'geniality', 'patience', 'calmness', 'love of nursing', 'loyalty to nursing' and 'not attaching importance to material values', fourth-year students emphasized the attributes of 'empathy', 'honesty', 'responsibility' and 'scientific curiosity' significantly more. Fourth-year students placed a greater emphasis on the attributes which the students are expected to acquire through a nursing program and clinical experience. However, they mentioned the attributes related to a good nurse-patient relationship and communication significantly less. Appropriate ethical training methods and good role models can help students acquire attributes that are important for the nursing

  13. Optimal Provision of Public Goods

    DEFF Research Database (Denmark)

    Kreiner, Claus Thustrup; Verdelin, Nicolaj

    There currently exist two competing approaches in the literature on the optimal provision of public goods. The standard approach highlights the importance of distortionary taxation and distributional concerns. The new approach neutralizes distributional concerns by adjusting the non-linear income...... for the optimal level of a public good without imposing any separability assumptions on preferences. This formula shows that distortionary taxation may have a role to play as in the standard approach. However, the main determinants of optimal provision are completely different and the traditional formula with its...

  14. ON A PARABOLIC FREE BOUNDARY EQUATION MODELING PRICE FORMATION

    KAUST Repository

    MARKOWICH, P. A.

    2009-10-01

    We discuss existence and uniqueness of solutions for a one-dimensional parabolic evolution equation with a free boundary. This problem was introduced by Lasry and Lions as description of the dynamical formation of the price of a trading good. Short time existence and uniqueness is established by a contraction argument. Then we discuss the issue of global-in-time-extension of the local solution which is closely related to the regularity of the free boundary. We also present numerical results. © 2009 World Scientific Publishing Company.

  15. Boundary work for implementing adaptive management: A water sector application.

    Science.gov (United States)

    Adem Esmail, Blal; Geneletti, Davide; Albert, Christian

    2017-09-01

    Boundary work, defined as effort to mediate between knowledge and action, is a promising approach for facilitating knowledge co-production for sustainable development. Here, we investigate a case study of knowledge co-production, to assess the applicability of boundary work as a conceptual framework to support implementing adaptive management in the water sector. We refer to a boundary work classification recently proposed by Clark et al., (2016), based on three types of knowledge uses, i.e. enlightenment, decision-, and negotiation-support, and three types of sources, i.e. personal expertise, single, and multiple communities of expertise. Our empirical results confirm boundary work has been crucial for the three types of knowledge use. For enlightenment and decision-support, effective interaction among knowledge producers and users was achieved through diverse boundary work practices, including joint agenda setting, and sharing of data and expertise. This initial boundary work eased subsequent knowledge co-production for decision-support and negotiations, in combination with stepping up of cooperation between relevant actors, suitable legislation and pressure for problem solving. Our analysis highlighted the temporal dimension matters - building trust around enlightenment first, and then using this as a basis for managing knowledge co-production for decision-, and negotiation support. We reconfirmed that boundary work is not a single time achievement, rather is a dynamic process, and we emphasized the importance of key actors driving the process, such as water utilities. Our results provide a rich case study of how strategic boundary work can facilitate knowledge co-production for adaptive management in the water sector. The boundary work practices employed here could also be transferred to other cases. Water utilities, as intermediaries between providers and beneficiaries of the important water-related ecosystem service of clean water provision, can indeed serve

  16. Negotiating concepts of evidence-based practice in the provision of good service for nursing and allied health professionals.

    Science.gov (United States)

    McTavish, Jill

    2017-03-01

    The principles of evidence-based medicine have been critiqued by the 'caring' professions, such as nursing and social work, and evidence-informed medicine has been proposed as a more client-centred, integrative approach to practice. The purpose of this study was to explore how Canadian health science librarians who serve nurses and allied health professionals define good service and how they negotiate evidence-based principles in their searching strategies. Twenty-two librarians completed a 30 minute, semi-structured phone interview about strategies for providing good service and supporting evidence-based services. Participants were also asked to respond to three challenging search scenarios. Analysis of results used grounded theory methods. Participants' definitions of good service and strategies for supporting evidence-based practice involved discussions about types of services provided, aspects of the librarian providing the service and aspects of the information provided during the service. Analysis of search scenarios revealed four justifications librarians rely upon when providing evidence that is in opposition to what their patron hopes to receive (evidentiary, ethical, practice-based and boundaries of the profession). The findings of this study suggest that health science librarians are both constrained and enabled by the principles of evidence-based medicine and especially by understandings of 'best evidence'. © 2017 Health Libraries Group.

  17. Marge Good, RN, MPH, OCN | Division of Cancer Prevention

    Science.gov (United States)

    Marge Good is a nurse consultant in the Division of Cancer Prevention where she provided support to the Community Clinical Oncology Programs (CCOP) and Minority-Based CCOPs, and now provides support to the NCI Community Oncology Research Program (NCORP). |

  18. Correlated equilibria in homogenous good Bertrand competition

    DEFF Research Database (Denmark)

    Jann, Ole; Schottmüller, Christoph

    2015-01-01

    We show that there is a unique correlated equilibrium, identical to the unique Nash equilibrium, in the classic Bertrand oligopoly model with homogenous goods and identical marginal costs. This provides a theoretical underpinning for the so-called "Bertrand paradox'' as well as its most general f...... formulation to date. Our proof generalizes to asymmetric marginal costs and arbitrarily many players in the following way: The market price cannot be higher than the second lowest marginal cost in any correlated equilibrium....

  19. Virtual Goods Recommendations in Virtual Worlds

    OpenAIRE

    Kuan-Yu Chen; Hsiu-Yu Liao; Jyun-Hung Chen; Duen-Ren Liu

    2015-01-01

    Virtual worlds (VWs) are computer-simulated environments which allow users to create their own virtual character as an avatar. With the rapidly growing user volume in VWs, platform providers launch virtual goods in haste and stampede users to increase sales revenue. However, the rapidity of development incurs virtual unrelated items which will be difficult to remarket. It not only wastes virtual global companies’ intelligence resources, but also makes it difficult for users to find suitable v...

  20. Health data for common good: : Defining the boundaries and social dilemmas of data commons

    NARCIS (Netherlands)

    Purtova, Nadezhda; Adams, Samantha; Purtova, Nadezhda; Leenes, Ronald

    2016-01-01

    The promises of Big Data Analytics in the area of health are grand and tempting. Access to the large pools of data, much of which is personal, is said to be vital if the Big Data health initiatives are to succeed. The resulting rhetoric is of data sharing. This contribution exposes ‘the other side’

  1. Towards Good Order at Sea

    DEFF Research Database (Denmark)

    Mandrup, Thomas; Vreÿ, Francois

    This book addresses a timely and important theme in the debate on how to create good governance at sea in general, but specifically in the Western Indian Ocean. In a security milieu where the number of piracy attacks originating from Somalia has decreased, there is an urgent need to address...

  2. SAPCO: From Good to Great

    Science.gov (United States)

    Alsaif, Saleh; Edinger, Brandon; Kodathala, Teja; Korzaan, Melinda

    2017-01-01

    Saudi Arabian Petrochemical Company (SAPCO), a petrochemicals manufacturer, has decided to make some major internal changes to gain increased market share and continue its success. It has been easy going for some time now, and business has been very good, but in order to take that next step, SAPCO needs to attain the Responsible Care…

  3. Communication from Goods Reception services

    CERN Document Server

    2007-01-01

    Members of the personnel are invited to take note that only parcels corresponding to official orders or contracts will be handled at CERN. Individuals are not authorised to have private merchandise delivered to them at CERN and private deliveries will not be accepted by the Goods Reception services. Thank you for your understanding.

  4. Optimal Provision of Public Goods

    DEFF Research Database (Denmark)

    Kreiner, Claus Thustrup; Verdelin, Nicolaj

    2012-01-01

    The standard approach to the optimal provision of public goods highlights the importance of distortionary taxation and distributional concerns. A new approach neutralizes distributional concerns by adjusting the income tax schedule. We demonstrate that both approaches are derived from the same...

  5. PUBLIC GOODS, CORRUPTION AND GROWTH???

    OpenAIRE

    Ratbek Dzhumashev

    2006-01-01

    In this paper, we analyse implications of corruption on growth. We extend existing growth models by incorporating ubiquitous corruption as a by-product of the public sector. Corruption affects both taxation and public good provision, and therefore causes income redistribution and inefficiencies in the public sector. These effects of corruption lead to lower growth through distortions of investment incentives and resources allocation.

  6. Education for the Good Society

    Science.gov (United States)

    Lawson, Neal; Spours, Ken

    2011-01-01

    The Left is facing a crisis of its approach to education highlighted by the "education revolution" of the Coalition Government. The authors argue that it is important to step back and present a positive vision of education based on the key pillars of the Good Society--fairness, democracy, sustainability and well-being. This values-led…

  7. A good decision on racism

    OpenAIRE

    Hadley, Jonathan

    2009-01-01

    Argues that where current laws on ethnic agitation appear inadequate to deal with the display of a Nazi flag from a residential balcony in Helsinki, that the European Union's recent framework decision on combating racism and xenophobia through criminal law is a good step forward in the fight against extremism in Finland

  8. What Good Are Conferences, Anyway?

    Science.gov (United States)

    Pietro, David C.

    1996-01-01

    According to Frederick Herzberg's studies of employee motivation, humans are driven by motivating factors that allow them to grow psychologically and hygiene factors that help them meet physical needs. Good education conferences can enhance both factors by helping principals refocus their energies, exchange ideas with trusted colleagues, and view…

  9. Nudge for (the public) good

    DEFF Research Database (Denmark)

    Fosgaard, Toke Reinholt; Piovesan, Marco

    2015-01-01

    In this paper we test the effect of non-binding defaults on the level of contribution to a public good. We manipulate the default numbers appearing on the decision screen to nudge subjects toward a free-rider strategy or a perfect conditional cooperator strategy. Our results show that the vast...

  10. Nudge for (the public) good

    DEFF Research Database (Denmark)

    Fosgaard, Toke Reinholt; Piovesan, Marco

    In this paper we test the effect of non-binding defaults on the level of contribution to a public good. We manipulate the default numbers appearing on the decision screen to nudge subjects toward a free-rider strategy or a perfect conditional cooperator strategy. Our results show that the vast...

  11. The concept of good faith

    NARCIS (Netherlands)

    Hesselink, M.W.; Hartkamp, A.S.; Hesselink, M.W.; Hondius, E.H.; Mak, C.; du Perron, C.E.

    2011-01-01

    If the role of the judge as a creator of rules is fully recognised, there is no need for a general good faith clause in a code or restatement of European private law. It may even do harm because it gives the courts an excuse for not formulating the rule which they apply. If, however, there is still

  12. What Makes a Good Book?

    Science.gov (United States)

    Park, Chung I.

    1987-01-01

    Discusses elements that are characteristic of good books: (1) impacts society; (2) changes our personal lives; (3) stretches the reader's mind; (4) handles ideas with skill; (5) is reread; (6) refines our sensibilities and intellect; (7) serves as a standard; and (8) adds to our knowledge of the human condition. (24 references) (MES)

  13. Measuring Goodness of Story Narratives

    Science.gov (United States)

    Le, Karen; Coelho, Carl; Mozeiko, Jennifer; Grafman, Jordan

    2011-01-01

    Purpose: The purpose of this article was to evaluate a new measure of story narrative performance: story completeness. It was hypothesized that by combining organizational (story grammar) and completeness measures, story "goodness" could be quantified. Method: Discourse samples from 46 typically developing adults were compared with those from 24…

  14. Good Governance in Land Tenure

    African Journals Online (AJOL)

    Thilo Marauhn

    2010-04-23

    Apr 23, 2010 ... There is no coherent state practice and no opinio iuris available on the basis of which to argue that good governance has become a legally binding norm of international customary law. In the light of this relatively weak outcome, would it be legitimate to refer to general principles of law within the meaning of ...

  15. Grain boundary melting in ice

    Science.gov (United States)

    Thomson, E. S.; Hansen-Goos, Hendrik; Wettlaufer, J. S.; Wilen, L. A.

    2013-03-01

    We describe an optical scattering study of grain boundary premelting in water ice. Ubiquitous long ranged attractive polarization forces act to suppress grain boundary melting whereas repulsive forces originating in screened Coulomb interactions and classical colligative effects enhance it. The liquid enhancing effects can be manipulated by adding dopant ions to the system. For all measured grain boundaries this leads to increasing premelted film thickness with increasing electrolyte concentration. Although we understand that the interfacial surface charge densities qs and solute concentrations can potentially dominate the film thickness, we cannot directly measure them within a given grain boundary. Therefore, as a framework for interpreting the data we consider two appropriate qs dependent limits; one is dominated by the colligative effect and other is dominated by electrostatic interactions.

  16. Allegheny County School District Boundaries

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset demarcates the school district boundaries within Allegheny County If viewing this description on the Western Pennsylvania Regional Data Center’s open...

  17. Boundary Layer Control on Airfoils.

    Science.gov (United States)

    Gerhab, George; Eastlake, Charles

    1991-01-01

    A phenomena, boundary layer control (BLC), produced when visualizing the fluidlike flow of air is described. The use of BLC in modifying aerodynamic characteristics of airfoils, race cars, and boats is discussed. (KR)

  18. County Boundaries with Shorelines (National)

    Data.gov (United States)

    Department of Transportation — County boundaries with shorelines cut in (NTAD). The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and...

  19. HUC 8-11 Boundaries

    Data.gov (United States)

    Kansas Data Access and Support Center — This data set is a digital hydrologic unit boundary that is at the 4-digit, 6-digit, 8-digit, and 11-digit level. The data set was developed by delineating the...

  20. The laminar boundary layer equations

    CERN Document Server

    Curle, N

    2017-01-01

    Thorough introduction to boundary layer problems offers an ordered, logical presentation accessible to undergraduates. The text's careful expositions of the limitations and accuracy of various methods will also benefit professionals. 1962 edition.

  1. State Highway District Boundaries - 2004

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data represents the NM Department of Transportation District boundaries as legislatively defined (i.e. these are not maintenance defined districts).

  2. Boundary Spanners in Global Partnerships

    DEFF Research Database (Denmark)

    Søderberg, Anne-Marie; Romani, Laurence

    2017-01-01

    client relationships and coordinating highly complex projects. We analyze vendor managers’ narratives of their collaboration with a European client in a long-term project, which is presented as a strategic partnership in an outsourcing 3.0 mode. The study offers a rich and conceptualized account of those...... technology (IT) development projects from the rare perspective of Indian vendor managers in one of the world’s largest IT service companies. It draws on a qualitative study of a collaborative partnership and focuses on the key boundary spanners who are responsible for developing trustful and sustainable...... managers’ boundary-spanning activities and a context-sensitive understanding of their boundary work. The study applies Bourdieu’s concept of capital (economic, cultural, social, and symbolic) not only in its analysis of the two powerful partners but also in its discussion of the boundary...

  3. Ten principles of good interdisciplinary team work.

    Science.gov (United States)

    Nancarrow, Susan A; Booth, Andrew; Ariss, Steven; Smith, Tony; Enderby, Pam; Roots, Alison

    2013-05-10

    Interdisciplinary team work is increasingly prevalent, supported by policies and practices that bring care closer to the patient and challenge traditional professional boundaries. To date, there has been a great deal of emphasis on the processes of team work, and in some cases, outcomes. This study draws on two sources of knowledge to identify the attributes of a good interdisciplinary team; a published systematic review of the literature on interdisciplinary team work, and the perceptions of over 253 staff from 11 community rehabilitation and intermediate care teams in the UK. These data sources were merged using qualitative content analysis to arrive at a framework that identifies characteristics and proposes ten competencies that support effective interdisciplinary team work. Ten characteristics underpinning effective interdisciplinary team work were identified: positive leadership and management attributes; communication strategies and structures; personal rewards, training and development; appropriate resources and procedures; appropriate skill mix; supportive team climate; individual characteristics that support interdisciplinary team work; clarity of vision; quality and outcomes of care; and respecting and understanding roles. We propose competency statements that an effective interdisciplinary team functioning at a high level should demonstrate.

  4. Recognition of boundary feedback systems

    DEFF Research Database (Denmark)

    Pedersen, Michael

    1989-01-01

    A system that has been the object of intense research is outlined. In view of that and recent progress of the theory of pseudodifferential boundary operator calculus, the author describes some features that could prove to be interesting in connection with the problems of boundary feedback...... stabilizability. It is shown that it is possible to use the calculus to consider more general feedback systems in a variational setup....

  5. Relationship between Equilibrium Fluctuations and Shear-Coupled Motion of Grain Boundaries

    Science.gov (United States)

    Karma, Alain; Trautt, Zachary T.; Mishin, Yuri

    2012-08-01

    We derive general analytical expressions relating the equilibrium fluctuations of a grain boundary to key parameters governing its motion coupled to shear deformation. We validate these expressions by molecular dynamics simulations for symmetrical tilt boundaries and demonstrate how they can be used to extract the misorientation dependence of the grain-boundary mobility. The results shed light on fundamental relationships between equilibrium and nonequilibrium grain-boundary properties and provide new means to predict those properties.

  6. Crossing boundaries in a collaborative modeling workspace

    Science.gov (United States)

    Morisette, Jeffrey T.; Cravens, Amanda; Miller, Brian W.; Talbert, Marian; Talbert, Colin; Jarnevich, Catherine S.; Fink, Michelle; Decker, Karin; Odell, Eric

    2017-01-01

    There is substantial literature on the importance of bridging across disciplinary and science–management boundaries. One of the ways commonly suggested to cross boundaries is for participants from both sides of the boundary to jointly produce information (i.e., knowledge co-production). But simply providing tools or bringing people together in the same room is not sufficient. Here we present a case study documenting the mechanisms by which managers and scientists collaborated to incorporate climate change projections into Colorado’s State Wildlife Action Plan. A critical component of the project was the use of a collaborative modeling and visualization workspace: the U.S. Geological Survey’s Resource for Advanced Modeling (RAM). Using video analysis and pre/post surveys from this case study, we examine how the RAM facilitated cognitive and social processes that co-produced a more salient and credible end product. This case provides practical suggestions to scientists and practitioners who want to implement actionable science.

  7. Boundary acquisition for setup of numerical simulation

    Energy Technology Data Exchange (ETDEWEB)

    Diegert, C. [Sandia National Lab., Albuquerque, NM (United States)

    1997-12-31

    The author presents a work flow diagram that includes a path that begins with taking experimental measurements, and ends with obtaining insight from results produced by numerical simulation. Two examples illustrate this path: (1) Three-dimensional imaging measurement at micron scale, using X-ray tomography, provides information on the boundaries of irregularly-shaped alumina oxide particles held in an epoxy matrix. A subsequent numerical simulation predicts the electrical field concentrations that would occur in the observed particle configurations. (2) Three-dimensional imaging measurement at meter scale, again using X-ray tomography, provides information on the boundaries fossilized bone fragments in a Parasaurolophus crest recently discovered in New Mexico. A subsequent numerical simulation predicts acoustic response of the elaborate internal structure of nasal passageways defined by the fossil record. The author must both add value, and must change the format of the three-dimensional imaging measurements before the define the geometric boundary initial conditions for the automatic mesh generation, and subsequent numerical simulation. The author applies a variety of filters and statistical classification algorithms to estimate the extents of the structures relevant to the subsequent numerical simulation, and capture these extents as faceted geometries. The author will describe the particular combination of manual and automatic methods used in the above two examples.

  8. Virtual Goods Recommendations in Virtual Worlds

    Directory of Open Access Journals (Sweden)

    Kuan-Yu Chen

    2015-01-01

    Full Text Available Virtual worlds (VWs are computer-simulated environments which allow users to create their own virtual character as an avatar. With the rapidly growing user volume in VWs, platform providers launch virtual goods in haste and stampede users to increase sales revenue. However, the rapidity of development incurs virtual unrelated items which will be difficult to remarket. It not only wastes virtual global companies’ intelligence resources, but also makes it difficult for users to find suitable virtual goods fit for their virtual home in daily virtual life. In the VWs, users decorate their houses, visit others’ homes, create families, host parties, and so forth. Users establish their social life circles through these activities. This research proposes a novel virtual goods recommendation method based on these social interactions. The contact strength and contact influence result from interactions with social neighbors and influence users’ buying intention. Our research highlights the importance of social interactions in virtual goods recommendation. The experiment’s data were retrieved from an online VW platform, and the results show that the proposed method, considering social interactions and social life circle, has better performance than existing recommendation methods.

  9. Virtual goods recommendations in virtual worlds.

    Science.gov (United States)

    Chen, Kuan-Yu; Liao, Hsiu-Yu; Chen, Jyun-Hung; Liu, Duen-Ren

    2015-01-01

    Virtual worlds (VWs) are computer-simulated environments which allow users to create their own virtual character as an avatar. With the rapidly growing user volume in VWs, platform providers launch virtual goods in haste and stampede users to increase sales revenue. However, the rapidity of development incurs virtual unrelated items which will be difficult to remarket. It not only wastes virtual global companies' intelligence resources, but also makes it difficult for users to find suitable virtual goods fit for their virtual home in daily virtual life. In the VWs, users decorate their houses, visit others' homes, create families, host parties, and so forth. Users establish their social life circles through these activities. This research proposes a novel virtual goods recommendation method based on these social interactions. The contact strength and contact influence result from interactions with social neighbors and influence users' buying intention. Our research highlights the importance of social interactions in virtual goods recommendation. The experiment's data were retrieved from an online VW platform, and the results show that the proposed method, considering social interactions and social life circle, has better performance than existing recommendation methods.

  10. GOOD GOVERNANCE: NORMATIVE VS. DESCRIPTIVE DIMENSION

    Directory of Open Access Journals (Sweden)

    Ciprian IFTIMOAEI

    2015-04-01

    Full Text Available The concept of “good governance” was used for the first time in the 1989 World Bank Report – Sub-Saharan Africa: From Crisis to Sustainable Growth. A Long-Term Perspective Study – and has already made history in international studies, especially after the breakdown of the communist regimes. The governance has to do with authority, decision-making and accountability.The good governance is defined as the capacity of the government to manage a nation’s affaires, to provide economic development, welfare for citizens, and social protection for the poor. In this article,the concept of good governance is analysed according to two main dimensions: the normative dimension which comprises principles, values and norms that are guiding the international community and the governments in the management of policymaking process;the descriptive dimension which refers to the practical aspects of implementing the good governance’s standards as policies, programmes and structural reforms with the aim of solving or ameliorating the problems of developing countries.

  11. Genetically modified foods as global public goods

    Directory of Open Access Journals (Sweden)

    Susana Herrero Olarte

    2014-07-01

    Full Text Available "Genetically modified (GM food has become very important in the field of research, as a result of its expansion in recent decades. As the right to food is a human right, it cannot be left in the hands of private sector developments exclusively, due to the capacity of the public sector to limit or drive it, and in any case, contributing to food safety. To achieve this, and for its cross-border development, GM needs to be treated as Global Public Goods (GPG, defined as pure or impure public goods that cannot be provided or regulated from a national or regional level, but from a global perspective. Its definition as GPG, and the fact of being public goods, assumes greater involvement by the public sector for its supply or regulation. It is therefore necessary to analyze the positive and negative externalities generated by transgenic foods becoming public goods, but from a global perspective. The difficulty is, that according to the author, GMs are positive or negative, so that there is no consensus to restrict and even prevent them or encourage them. But, there is a consensus on some key issues of GM food, such as improving productivity, contributing to the reduction of the species, the dependence of farmers, or monopoly companies with the patent. Identifying these issues can serve to initiate the appropriate regulation."

  12. Open Boundary Conditions for Dissipative MHD

    Energy Technology Data Exchange (ETDEWEB)

    Meier, E T

    2011-11-10

    In modeling magnetic confinement, astrophysics, and plasma propulsion, representing the entire physical domain is often difficult or impossible, and artificial, or 'open' boundaries are appropriate. A novel open boundary condition (BC) for dissipative MHD, called Lacuna-based open BC (LOBC), is presented. LOBC, based on the idea of lacuna-based truncation originally presented by V.S. Ryaben'kii and S.V. Tsynkov, provide truncation with low numerical noise and minimal reflections. For hyperbolic systems, characteristic-based BC (CBC) exist for separating the solution into outgoing and incoming parts. In the hyperbolic-parabolic dissipative MHD system, such separation is not possible, and CBC are numerically unstable. LOBC are applied in dissipative MHD test problems including a translating FRC, and coaxial-electrode plasma acceleration. Solution quality is compared to solutions using CBC and zero-normal derivative BC. LOBC are a promising new open BC option for dissipative MHD.

  13. Restructuring surface tessellation with irregular boundary conditions

    Directory of Open Access Journals (Sweden)

    Tsung-Hsien Wang

    2014-12-01

    Full Text Available In this paper, the surface tessellation problem is explored, in particular, the task of meshing a surface with the added consideration of incorporating constructible building components. When a surface is tessellated into discrete counterparts, certain unexpected conditions usually occur at the boundary of the surface, in particular, when the surface is being trimmed. For example, irregularly shaped panels form at the trimmed edges. To reduce the number of irregular panels that may form during the tessellation process, this paper presents an algorithmic approach to restructuring the surface tessellation by investigating irregular boundary conditions. The objective of this approach is to provide an alternative way for freeform surface manifestation from a well-structured discrete model of the given surface.

  14. Dimension of Fractal Basin Boundaries.

    Science.gov (United States)

    Park, Bae-Sig

    In many dynamical systems, multiple attractors coexist for certain parameter ranges. The set of initial conditions that asymptotically approach each attractor is its basin of attraction. These basins can be intertwined on arbitrary small scales. Basin boundary can be either smooth or fractal. Dynamical systems that have fractal basin boundary show "final state sensitivity" of the initial conditions. A measure of this sensitivity (uncertainty exponent alpha) is related to the dimension of the basin boundary d = D - alpha , where D is the dimension of the phase space and d is the dimension of the basin boundary. At metamorphosis values of the parameter, there might happen a conversion from smooth to fractal basin boundary (smooth-fractal metamorphosis) or a conversion from fractal to another fractal basin boundary characteristically different from the previous fractal one (fractal-fractal metamorphosis). The dimension changes continuously with the parameter except at the metamorphosis values where the dimension of the basin boundary jumps discontinuously. We chose the Henon map and the forced damped pendulum to investigate this. Scaling of the basin volumes near the metamorphosis values of the parameter is also being studied for the Henon map. Observations are explained analytically by using low dimensional model map. We look for universal scalings of the dimension of fractal basin boundaries near type I and type III intermittency transitions to chaos. Type I intermittency can occur as the system experiences a saddle-node (tangent) bifurcation and type III intermittency can occur as the system experiences an inverted period doubling bifurcation. At these bifurcations, multiple attractors with fractal basin boundaries can be created. It is found the dimension scales, with the parameter, according to the power law d = d_{o } - k| p - p_{c}| ^{beta} with beta = 1/2, where p is the system parameter, p _{c} is the bifurcation value, k is a scaling constant, and d_{o} is

  15. Shape optimization: Good looks and acoustics too!

    Science.gov (United States)

    D'Antonio, Peter; Cox, Trevor J.; Haas, Steve

    2003-04-01

    One of the challenges in the architectural acoustic design of museums and other public spaces is to develop contemporary scattering surfaces that complement contemporary architecture in the way that statuary, coffered ceilings, columns, and relief ornamentation complemented classic architecture. Often acoustic surfaces satisfy the acoustics, but may or may not satisfy the aesthetics. One approach that has been successful employs a combination of boundary element and multidimensional optimization techniques. The architect supplies the desired shape motif and the acoustician supplies the acoustical performance requirements. The optimization program then provides an Arcousthetic surface, which simultaneously satisfies the architecture, the acoustics, and the aesthetics. The program can be used with diffusive or diffsorptive surfaces. Photos of installations using these acoustic tools and a description of the design of the National Museum of the American Indian will also be presented to illustrate the usefulness of these devices and their impact on architectural acoustics.

  16. Switch for Good Community Program

    Energy Technology Data Exchange (ETDEWEB)

    Crawford, Tabitha [Balfour Beatty Military Housing Management LLC, Newtown Square, PA (United States); Amran, Martha [WattzOn, Inc., Mountain View, CA (United States)

    2013-11-19

    Switch4Good is an energy-savings program that helps residents reduce consumption from behavior changes; it was co-developed by Balfour Beatty Military Housing Management (BB) and WattzOn in Phase I of this grant. The program was offered at 11 Navy bases. Three customer engagement strategies were evaluated, and it was found that Digital Nudges (a combination of monthly consumption statements with frequent messaging via text or email) was most cost-effective. The program was delivered on-time and on-budget, and its success is based on the teamwork of local BB staff and the WattzOn team. The following graphic shows Switch4Good “by the numbers”, e.g. the scale of operations achieved during Phase I.

  17. What Makes a Good Feature?

    Science.gov (United States)

    1992-04-01

    RICHARDS & JEPSON WHAT MAKES A GOOD FEATURE? MACHINE NEUROPHYSIOLOGY ETHOLOGY VISION ze7-crossing V - Duck parallel T - junction H owlnd sk w-y...metry F= 9e Figure 1 Typical features proposed by machine vision, neurophysiology, and ethology . What common properties do these features satisfy? What...transversal cat - egory Pi within M. Each of these measures is assumed to have density functions of the form p,(mIC.) = pC(m)fCexp(-H,(mjC.)),i = 0

  18. Agricultural goods transport and environment

    OpenAIRE

    Gebresenbet, Girma

    1999-01-01

    Transport plays a controversial role and highly related to almost all sectors of human activities. It plays an important role in stimulating economy and promoting the well being and quality of human life. However, its negative impact on the environment in the form of pollution is increasing at a high rate, and thus becoming a serious threat to plant, animal and human life. In the recent decades, goods transport has been intensified and its contribution to the environmental deterioration is st...

  19. Experience in public goods experiments

    OpenAIRE

    Conte, Anna; Levati, M. Vittoria; Montinari, Natalia

    2014-01-01

    We use information on students' past participation in economic experiments, as stored in our database, to analyze whether behavior in public goods games is affected by experience (i.e., previous participation in social dilemma-type experiments) and history (i.e., participation in experiments of a different class than the social dilemma). We have three main results. First, at the aggregate level, the amount subjects contribute and expect others to contribute decrease with experience. Second, a...

  20. A numerical simulation of longitudinal vortex in turbulent boundary layers

    Energy Technology Data Exchange (ETDEWEB)

    Yang, J.S.; Lee, K.B. [Pusan National University, Pusan (Korea)

    2000-06-01

    This paper represents numerical computations of the interaction between the longitudinal vortex and a flat plate 3-D turbulent boundary layer. In the present study, the main interest is in the behavior of longitudinal vortices introduced in turbulent boundary layers. The flow field behind vortex generator is modeled by the information that is available from studies on the delta winglet. Also, the Reynolds-averaged Navier-Stoke equations for three-dimensional turbulent flows, together with a two-layer turbulence model to resolve the near-wall flow, is solved by the method of pseudo compressibility. The present results show that the boundary layer is thinned in the regions where the secondary flow is directed toward the wall and thickened where it is directed away from the wall, and have a good agreement with the experimental data. (author). 12 refs., 12 figs.

  1. Analysis of diabatic flow modification in the internal boundary layer

    DEFF Research Database (Denmark)

    Floors, Rogier; Gryning, Sven-Erik; Pena Diaz, Alfredo

    2011-01-01

    Measurements at two meteorological masts in Denmark, Horns Rev in the sea and Høvsøre near the coastline on land, are used to analyze the behaviour of the flow after a smooth-to-rough change in surface conditions. The study shows that the wind profile within the internal boundary layer...... is controlled by a combination of both downstream and upstream stability and surface roughness conditions. A model based on a diffusion analogy is able to predict the internal boundary layer height well. Modeling the neutral and long-term wind profile with a 3 layer linear interpolation scheme gives good...... results at Høvsøre. Based on a comparison with a numerical model and the measurements, the constants in the interpolation scheme are slightly adjusted, which yields an improvement for the description of the wind profile in the internal boundary layer....

  2. Boundary slip from the immersed boundary lattice Boltzmann models.

    Science.gov (United States)

    Le, Guigao; Zhang, Junfeng

    2009-02-01

    We report an interesting and important observation of the velocity fields from immersed boundary lattice Boltzmann methods (IB-LBM). The computed velocity profiles can deviate from theoretical predictions greatly even for very simple flow situations, both in the immersed boundary layer and the bulk region. A rigorous analysis of the IB-LBM simulated velocity for a symmetric shear flow is carried out, and the analytical solutions indicate a strong dependence of velocity on the relaxation parameter (kinetic viscosity). Also our simulations demonstrate that simply increasing the immersed boundary layer thickness is not an efficient approach to reduce such velocity discrepancy. We hope this work will bring the awareness of this essential issue to people using IB-LBM for various flow situations.

  3. Movement Without Boundaries

    Directory of Open Access Journals (Sweden)

    Jennifer Fortuna

    2017-10-01

    Full Text Available Johnson Simon, an artist based in West Palm Beach, FL, provided the cover art for the Fall 2017 edition of The Open Journal of Occupational Therapy (OJOT. “Dancing in Motion” is a 36” x 60” painting made from acrylic on canvas. Johnson always wanted to become a dancer. He was born with cerebral palsy, and therefore physical limitations make it difficult for Johnson to coordinate his body movements. Through use of vibrant colors and bold strokes, Johnson’s expressionist paintings evoke movement and motion. Occupational therapy helped Johnson discover his artistic abilities. Painting empowered him to move without limitations

  4. Shifting Boundaries in Telecare

    DEFF Research Database (Denmark)

    Nickelsen, Niels Christian Mossfeldt; Elkjær, Bente

    2017-01-01

    Purpose Telecare is a growing practice defined as diagnosis, treatment and monitoring among doctors, nurses and patients, which is mediated through ICT and without face-to-face interaction. The purpose of this article is to provide empirically based knowledge about the organization of the use...... as ‘paradoxical accountability’. Design/methodology/approach The study draws on observations, interviews and desk research in relation to a large 4.5 million euro pilot project at four hospitals in Copenhagen regarding care of 120 patients with chronic obstructive pulmonary disorder (COPD). The empirical study...

  5. BOUNDARIES|ENCOUNTERS|CONNECTIONS

    DEFF Research Database (Denmark)

    The recent growth of many cities calls for a rethinking of urban and suburban development. How are suburbs and former industrial areas transformed to provide room for new citizens and functions? How do housing and urban space shape communities and everyday life? How can architecture and urban...... planning deal with current challenges like segregation, climate changes and ageing societies? These are some of the issues that were discussed at the Housing and Welfare Conference held in May 2015 in Copenhagen. The academic papers presented at the conference are published in these proceedings....

  6. Boundary-layer height detection with a ceilometer at a coastal site in western Denmark

    DEFF Research Database (Denmark)

    Hannesdóttir, Ásta; Hansen, Aksel Walle

    with those from turbulence measurements of a wind lidar and the two methods are in good agreement. It is found that detecting the boundary-layer height from turbulence kinetic energy considerations with the wind lidar is not recommendable for detecting the boundary layer height during the presence of clouds......One year of data from ceilometer measurements is used to estimate the atmospheric boundary-layer height at the coastal site Høvsøre in western Denmark. The atmospheric boundary-layer height is a fundamental parameter for the evaluation of the wind speed profile, and an essential parameter...... in atmospheric transport- and dispersion models. A new method of filtering clouds from the ceilometer data is presented. This allows for the inclusion of more than half of the data in the subsequent analysis, as the presence of clouds would otherwise complicate the boundary-layer height estimations. The boundary...

  7. Right focal boundary value problems for difference equations

    Directory of Open Access Journals (Sweden)

    Johnny Henderson

    2010-01-01

    Full Text Available An application is made of a new Avery et al. fixed point theorem of compression and expansion functional type in the spirit of the original fixed point work of Leggett and Williams, to obtain positive solutions of the second order right focal discrete boundary value problem. In the application of the fixed point theorem, neither the entire lower nor entire upper boundary is required to be mapped inward or outward. A nontrivial example is also provided.

  8. Contraction and elongation: Mechanics underlying cell boundary deformations in epithelial tissue.

    Science.gov (United States)

    Hara, Yusuke

    2017-06-01

    The cell-cell boundaries of epithelial cells form cellular frameworks at the apical side of tissues. Deformations in these boundaries, for example, boundary contraction and elongation, and the associated forces form the mechanical basis of epithelial tissue morphogenesis. In this review, using data from recent Drosophila studies on cell boundary contraction and elongation, I provide an overview of the mechanism underlying the bi-directional deformations in the epithelial cell boundary, that are sustained by biased accumulations of junctional and apico-medial non-muscle myosin II. Moreover, how the junctional tensions exist on cell boundaries in different boundary dynamics and morphologies are discussed. Finally, some future perspectives on how recent knowledge about single cell boundary-level mechanics will contribute to our understanding of epithelial tissue morphogenesis are discussed. © 2017 Japanese Society of Developmental Biologists.

  9. Turbulent boundary layer measurements over flat surfaces coated by nanostructured marine antifoulings

    Science.gov (United States)

    Ünal, Uğur Oral; Ünal, Burcu; Atlar, Mehmet

    2012-06-01

    Whilst recent developments of nanotechnology are being exploited by chemists and marine biologists to understand how the completely environmentally friendly foul release coatings can control marine biofouling and how they can be developed further, the understanding of the hydrodynamic performances of these new generation coatings is being overlooked. This paper aims to investigate the relative boundary layer, roughness and drag characteristics of some novel nanostructured coatings, which were developed through a multi-European and multi-disciplined collaborative research project AMBIO (2010), within the framework of turbulent flows over rough surfaces. Zero-pressure-gradient, turbulent boundary layer flow measurements were conducted over flat surfaces coated with several newly developed nanostructured antifouling paints, along with some classic reference surfaces and a state-of-the-art commercial coating, in the Emerson Cavitation Tunnel (ECT) of Newcastle University. A large flat plane test bed that included interchangeable flat test sections was used for the experiments. The boundary layer data were collected with the aid of a two-dimensional DANTEC Laser Doppler Velocimetry (LDV) system. These measurements provided the main hydrodynamic properties of the newly developed nanostructured coatings including local skin friction coefficients, roughness functions and Reynolds stresses. The tests and subsequent analysis indicated the exceptionally good frictional properties of all coatings tested, in particular, the drag benefit of some new nanostructured coatings in the Reynolds number range investigated. The rapidly decreasing roughness function trends of AKZO19 and AKZO20 as the ks^{ + } increases were remarkable along with the dissimilar roughness function character of all tested coatings to the well-known correlation curves warranting further research at higher Reynolds numbers. The wall similarity concept for the Reynolds stresses was only validated for the

  10. Undulatory microswimming near solid boundaries

    Science.gov (United States)

    Schulman, R. D.; Backholm, M.; Ryu, W. S.; Dalnoki-Veress, K.

    2014-10-01

    The hydrodynamic forces involved in the undulatory microswimming of the model organism C. elegans are studied in proximity to solid boundaries. Using a micropipette deflection technique, we attain direct and time-resolved force measurements of the viscous forces acting on the worm near a single planar boundary as well as confined between two planar boundaries. We observe a monotonic increase in the lateral and propulsive forces with increasing proximity to the solid interface. We determine normal and tangential drag coefficients for the worm, and find these to increase with confinement. The measured drag coefficients are compared to existing theoretical models. The ratio of normal to tangential drag coefficients is found to assume a constant value of 1.5 ± 0.1(5) at all distances from a single boundary, but increases significantly as the worm is confined between two boundaries. In response to the increased drag due to confinement, we observe a gait modulation of the nematode, which is primarily characterized by a decrease in the swimming amplitude.

  11. Nonlinear streak computation using boundary region equations

    Energy Technology Data Exchange (ETDEWEB)

    Martin, J A; Martel, C, E-mail: juanangel.martin@upm.es, E-mail: carlos.martel@upm.es [Depto. de Fundamentos Matematicos, E.T.S.I Aeronauticos, Universidad Politecnica de Madrid, Plaza Cardenal Cisneros 3, 28040 Madrid (Spain)

    2012-08-01

    The boundary region equations (BREs) are applied for the simulation of the nonlinear evolution of a spanwise periodic array of streaks in a flat plate boundary layer. The well-known BRE formulation is obtained from the complete Navier-Stokes equations in the high Reynolds number limit, and provides the correct asymptotic description of three-dimensional boundary layer streaks. In this paper, a fast and robust streamwise marching scheme is introduced to perform their numerical integration. Typical streak computations present in the literature correspond to linear streaks or to small-amplitude nonlinear streaks computed using direct numerical simulation (DNS) or the nonlinear parabolized stability equations (PSEs). We use the BREs to numerically compute high-amplitude streaks, a method which requires much lower computational effort than DNS and does not have the consistency and convergence problems of the PSE. It is found that the flow configuration changes substantially as the amplitude of the streaks grows and the nonlinear effects come into play. The transversal motion (in the wall normal-streamwise plane) becomes more important and strongly distorts the streamwise velocity profiles, which end up being quite different from those of the linear case. We analyze in detail the resulting flow patterns for the nonlinearly saturated streaks and compare them with available experimental results. (paper)

  12. Numerical Methods for Free Boundary Problems

    CERN Document Server

    1991-01-01

    About 80 participants from 16 countries attended the Conference on Numerical Methods for Free Boundary Problems, held at the University of Jyviiskylii, Finland, July 23-27, 1990. The main purpose of this conference was to provide up-to-date information on important directions of research in the field of free boundary problems and their numerical solutions. The contributions contained in this volume cover the lectures given in the conference. The invited lectures were given by H.W. Alt, V. Barbu, K-H. Hoffmann, H. Mittelmann and V. Rivkind. In his lecture H.W. Alt considered a mathematical model and existence theory for non-isothermal phase separations in binary systems. The lecture of V. Barbu was on the approximate solvability of the inverse one phase Stefan problem. K-H. Hoff­ mann gave an up-to-date survey of several directions in free boundary problems and listed several applications, but the material of his lecture is not included in this proceedings. H.D. Mittelmann handled the stability of thermo capi...

  13. Understanding perceptual boundaries in laparoscopic surgery.

    Science.gov (United States)

    Lamata, Pablo; Gomez, Enrique J; Hernández, Félix Lamata; Oltra Pastor, Alfonso; Sanchez-Margallo, Francisco Miquel; Del Pozo Guerrero, Francisco

    2008-03-01

    Human perceptual capabilities related to the laparoscopic interaction paradigm are not well known. Its study is important for the design of virtual reality simulators, and for the specification of augmented reality applications that overcome current limitations and provide a supersensing to the surgeon. As part of this work, this article addresses the study of laparoscopic pulling forces. Two definitions are proposed to focalize the problem: the perceptual fidelity boundary, limit of human perceptual capabilities, and the Utile fidelity boundary, that encapsulates the perceived aspects actually used by surgeons to guide an operation. The study is then aimed to define the perceptual fidelity boundary of laparoscopic pulling forces. This is approached with an experimental design in which surgeons assess the resistance against pulling of four different tissues, which are characterized with both in vivo interaction forces and ex vivo tissue biomechanical properties. A logarithmic law of tissue consistency perception is found comparing subjective valorizations with objective parameters. A model of this perception is developed identifying what the main parameters are: the grade of fixation of the organ, the tissue stiffness, the amount of tissue bitten, and the organ mass being pulled. These results are a clear requirement analysis for the force feedback algorithm of a virtual reality laparoscopic simulator. Finally, some discussion is raised about the suitability of augmented reality applications around this surgical gesture.

  14. Charismatic leadership, boundary issues, and collusion.

    Science.gov (United States)

    Dorian, B J; Dunbar, C; Frayn, D; Garfinkel, P E

    2000-01-01

    The authors suggest that a charismatic leadership style has an impact on the maintenance of boundaries and standards of practice within a department of psychiatry. They also underline the need for all members of a self-regulated professional group to assume responsibility for the maintenance of standards within the group. An overview of leadership tasks and styles, with particular emphasis on the qualities of charismatic leadership, is provided, and the impacts of boundary violations committed by members of a psychiatric department or institute on the integrity of the professional group are also elaborated. The authors then develop several hypotheses regarding the phenomenon of emotional collusion that occurs in departments in which a charismatic leader becomes sexually involved with patients. The individual internal psychological mechanisms and companion group dynamics that may allow the leader to be supported at the cost of ethical standards, principles of practice, and the ultimate creativity and viability of the group are then discussed. The authors conclude that the maintenance of standards within a self-regulating professional group must be the shared responsibility of all members. The example of boundary violations by a charismatic leader is used to illustrate the need for open debate regarding fundamental principles required to maintain a healthy functioning of critical checks and balances within the psychiatric profession.

  15. Computational modeling of unsteady loads in tidal boundary layers

    Science.gov (United States)

    Alexander, Spencer R.

    As ocean current turbines move from the design stage into production and installation, a better understanding of oceanic turbulent flows and localized loading is required to more accurately predict turbine performance and durability. In the present study, large eddy simulations (LES) are used to measure the unsteady loads and bending moments that would be experienced by an ocean current turbine placed in a tidal channel. The LES model captures currents due to winds, waves, thermal convection, and tides, thereby providing a high degree of physical realism. Probability density functions, means, and variances of unsteady loads are calculated, and further statistical measures of the turbulent environment are also examined, including vertical profiles of Reynolds stresses, two-point correlations, and velocity structure functions. The simulations show that waves and tidal velocity had the largest impact on the strength of off-axis turbine loads. By contrast, boundary layer stability and wind speeds were shown to have minimal impact on the strength of off- axis turbine loads. It is shown both analytically and using simulation results that either transverse velocity structure functions or two-point transverse velocity spatial correlations are good predictors of unsteady loading in tidal channels.

  16. Grain Boundary Engineering for Assessing Durability and Aging Issues with Nickel-Based Superalloys Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Grain Boundary Engineering (GBE) approach, successfully demonstrated in Phase I, that microstructural optimization provides a very significant improvement in...

  17. OA14 Good life, good death, good grief: changing scottish culture.

    Science.gov (United States)

    Hazelwood, Mark A; Patterson, Rebecca M

    2015-04-01

    Social harms are caused in Scotland because of a cultural reluctance to be open about death, dying and bereavement, and there is growing recognition of the importance of promoting culture change relating to these issues. Good Life, Good Death, Good Grief (GLGDGG) was established to make Scotland a place where there is more openness about death, dying and bereavement. Led and supported by the Scottish Partnership for Palliative Care, GLGDGG follows an "assets-based" approach-engaging, supporting and enhancing the assets of others. GLGDGG has: assisted in mobilising the assets of communities (eg through establishing small grants schemes and focal points of activity like To Absent Friends.) influenced policy (eg key messages incorporated within significant publications) found innovative ways of achieving impact on minimal resources (eg Death on the Fringe) A national alliance to encourage and guide activity is helpful in engaging communities and shaping policy. © 2015, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  18. The structure of boundary parameter property satisfying sets

    CERN Document Server

    Whale, B E

    2010-01-01

    Precise definitions of singularities in General Relativity rely on a set of curves. Many boundary constructions force a particular set of curves by virtue of the construction. The abstract boundary, however, allows the set of curves to be chosen. This set, therefore, plays a very important role in the use of the abstract boundary as the definition of a singularity or point at infinity depends on it. The sets of curves used in the abstract boundary must satisfy the boundary parameter property. This property obfuscates the construction of and relationships between these sets of curves. In this paper we lay the ground work for an analysis of these sets of curves by showing that they are in one-to-one correspondence with certain sets of inextendible curves. As an application of this result we show how the usual set operations can be extended to boundary parameter property satisfying sets of curves, allowing for their comparison. These results provide an interpretation of what information boundary parameter proper...

  19. Lyapunov Based Estimation of Flight Stability Boundary under Icing Conditions

    Directory of Open Access Journals (Sweden)

    Binbin Pei

    2017-01-01

    Full Text Available Current fight boundary of the envelope protection in icing conditions is usually defined by the critical values of state parameters; however, such method does not take the interrelationship of each parameter and the effect of the external disturbance into consideration. This paper proposes constructing the stability boundary of the aircraft in icing conditions through analyzing the region of attraction (ROA around the equilibrium point. Nonlinear icing effect model is proposed according to existing wind tunnel test results. On this basis, the iced polynomial short period model can be deduced further to obtain the stability boundary under icing conditions using ROA analysis. Simulation results for a series of icing severity demonstrate that, regardless of the icing severity, the boundary of the calculated ROA can be treated as an estimation of the stability boundary around an equilibrium point. The proposed methodology is believed to be a promising way for ROA analysis and stability boundary construction of the aircraft in icing conditions, and it will provide theoretical support for multiple boundary protection of icing tolerant flight.

  20. Nonlinear pricing of information goods

    OpenAIRE

    Arun Sundararajan

    2003-01-01

    This paper analyzes optimal pricing for information goods under incomplete information, when both unlimited-usage (fixed-fee) pricing and usage-based pricing are feasible, and administering usage-based pricing may involve transaction costs. It is shown that offering fixed- fee pricing in addition to a non-linear usage-based pricing scheme is always profit-improving in the presence of any non-zero transaction costs, and there may be markets in which a pure fixed-fee is optimal. This implies th...

  1. Free boundary ballooning mode representation

    Science.gov (United States)

    Zheng, Linjin

    2012-03-01

    Considerable efforts have been made in this field to develop a free boundary ballooning mode representation, which can incorporate the peeling mode stability criterion. Those efforts have not succeeded, simply because the so-called ballooning mode invariance is broken toward plasma edge. This makes 1D description of high n modes at plasma edge become impossible, where n is toroidal mode number. Nevertheless, we prove that the existence of ``half" ballooning mode invariance toward plasma core enables an 1.δ-dimentional representation of the modes, where δ˜O(1/n). This considerably reduces the complicity in investigating high n modes at plasma edge and can be used to study peeling-ballooning modes. This technique can also be useful to extend the 1D calculation of fixed boundary ballooning modes for free boundary ballooning modes. Numerical example will also be presented together with the topological symmetry analysis.

  2. Evaluating approximations to the optimal exercise boundary for American options

    Directory of Open Access Journals (Sweden)

    Roland Mallier

    2002-01-01

    Full Text Available We consider series solutions for the location of the optimal exercise boundary of an American option close to expiry. By using Monte Carlo methods, we compute the expected value of an option if the holder uses the approximate location given by such a series as his exercise strategy, and compare this value to the actual value of the option. This gives an alternative method to evaluate approximations. We find the series solution for the call performs excellently under this criterion, even for large times, while the asymptotic approximation for the put is very good near to expiry but not so good further from expiry.

  3. Boundary Layer Transition Results From STS-114

    Science.gov (United States)

    Berry, Scott A.; Horvath, Thomas J.; Cassady, Amy M.; Kirk, Benjamin S.; Wang, K. C.; Hyatt, Andrew J.

    2006-01-01

    The tool for predicting the onset of boundary layer transition from damage to and/or repair of the thermal protection system developed in support of Shuttle Return to Flight is compared to the STS-114 flight results. The Boundary Layer Transition (BLT) Tool is part of a suite of tools that analyze the aerothermodynamic environment of the local thermal protection system to allow informed disposition of damage for making recommendations to fly as is or to repair. Using mission specific trajectory information and details of each damage site or repair, the expected time of transition onset is predicted to help determine the proper aerothermodynamic environment to use in the subsequent thermal and stress analysis of the local structure. The boundary layer transition criteria utilized for the tool was developed from ground-based measurements to account for the effect of both protuberances and cavities and has been calibrated against flight data. Computed local boundary layer edge conditions provided the means to correlate the experimental results and then to extrapolate to flight. During STS-114, the BLT Tool was utilized and was part of the decision making process to perform an extravehicular activity to remove the large gap fillers. The role of the BLT Tool during this mission, along with the supporting information that was acquired for the on-orbit analysis, is reviewed. Once the large gap fillers were removed, all remaining damage sites were cleared for reentry as is. Post-flight analysis of the transition onset time revealed excellent agreement with BLT Tool predictions.

  4. Boundary Value Problems and Approximate Solutions ...

    African Journals Online (AJOL)

    In this paper, we discuss about some basic things of boundary value problems. Secondly, we study boundary conditions involving derivatives and obtain finite difference approximations of partial derivatives of boundary value problems. The last section is devoted to determine an approximate solution for boundary value ...

  5. Boundary Spanners as supports of social capital

    DEFF Research Database (Denmark)

    Vincenti, Gordon

    2016-01-01

    Boundary Spanners are important agenets of supporting the capacity building of local neighbourhoods and of sustainable social captial the article focuses on the skills and competnces adn role of Boundary Spanners.......Boundary Spanners are important agenets of supporting the capacity building of local neighbourhoods and of sustainable social captial the article focuses on the skills and competnces adn role of Boundary Spanners....

  6. Boundary Transgressions: An Issue In Psychotherapeutic Encounter ...

    African Journals Online (AJOL)

    Boundary transgressions tend to be conceptualized on a continuum ranging from boundary crossings to boundary violations. Boundary crossings (e.g. accepting an inexpensive holiday gift from a client, unintentionally encountering a client in public, or attending a client's special event) are described in the literature as ...

  7. Tracking the India-Arabia Transform Plate Boundary during Paleogene Times.

    Science.gov (United States)

    Rodriguez, M.; Huchon, P.; Chamot-Rooke, N. R. A.; Fournier, M.; Delescluse, M.

    2014-12-01

    The Zagros and Himalaya mountain belts are the most prominent reliefs built by continental collision. They respectively result from Arabia and India collision with Eurasia. Convergence motions at mountain belts induced most of plate reorganization events in the Indian Ocean during the Cenozoic. Although critical for paleogeographic reconstructions, the way relative motion between Arabia and India was accommodated prior to the formation of the Sheba ridge in the Gulf of Aden remains poorly understood. The India-Arabia plate-boundary belongs to the category of long-lived (~90-Ma) oceanic transform faults, thus providing a good case study to investigate the role of major kinematic events over the structural evolution of a long-lived transform system. A seismic dataset crossing the Owen Fracture Zone, the Owen Basin, and the Oman Margin was acquired to track the past locations of the India-Arabia plate boundary. We highlight the composite age of the Owen Basin basement, made of Paleocene oceanic crust drilled on its eastern part, and composed of pre-Maastrichtian continental crust overlaid by Early Paleocene ophiolites on its western side. A major transform fault system crossing the Owen Basin juxtaposed these two slivers of lithosphere of different ages, and controlled the uplift of marginal ridges along the Oman Margin. This transform system deactivated ~40 Ma ago, coeval with the onset of ultra-slow spreading at the Carlsberg Ridge. The transform boundary then jumped to the edge of the present-day Owen Ridge during the Late Eocene-Oligocene period, before seafloor spreading began at the Sheba Ridge. This migration of the plate boundary involved the transfer of a part of the Indian oceanic lithosphere accreted at the Carlsberg Ridge to the Arabian plate. The episode of plate transfer at the India-Arabia plate boundary during the Late Eocene-Oligocene interval is synchronous with a global plate reorganization event corresponding to geological events at the Zagros and

  8. Drawing boundaries : boundary arrangements of the IPCC working groups

    NARCIS (Netherlands)

    Christel van Eck

    2016-01-01

    The present research investigates how the IPCC’s Working Groups safeguard their scientific character while communicating with policymakers. Due to the different nature of Working Groups’ assessments, all Working Groups make different boundary arrangements of how science is defined; what is

  9. Exact and Optimal Quantum Mechanics/Molecular Mechanics Boundaries.

    Science.gov (United States)

    Sun, Qiming; Chan, Garnet Kin-Lic

    2014-09-09

    Motivated by recent work in density matrix embedding theory, we define exact link orbitals that capture all quantum mechanical (QM) effects across arbitrary quantum mechanics/molecular mechanics (QM/MM) boundaries. Exact link orbitals are rigorously defined from the full QM solution, and their number is equal to the number of orbitals in the primary QM region. Truncating the exact set yields a smaller set of link orbitals optimal with respect to reproducing the primary region density matrix. We use the optimal link orbitals to obtain insight into the limits of QM/MM boundary treatments. We further analyze the popular general hybrid orbital (GHO) QM/MM boundary across a test suite of molecules. We find that GHOs are often good proxies for the most important optimal link orbital, although there is little detailed correlation between the detailed GHO composition and optimal link orbital valence weights. The optimal theory shows that anions and cations cannot be described by a single link orbital. However, expanding to include the second most important optimal link orbital in the boundary recovers an accurate description. The second optimal link orbital takes the chemically intuitive form of a donor or acceptor orbital for charge redistribution, suggesting that optimal link orbitals can be used as interpretative tools for electron transfer. We further find that two optimal link orbitals are also sufficient for boundaries that cut across double bonds. Finally, we suggest how to construct "approximately" optimal link orbitals for practical QM/MM calculations.

  10. Plasma boundaries at Mars: a 3-D simulation study

    Directory of Open Access Journals (Sweden)

    A. Bößwetter

    2004-12-01

    Full Text Available The interaction of the solar wind with the ionosphere of planet Mars is studied using a three-dimensional hybrid model. Mars has only a weak intrinsic magnetic field, and consequently its ionosphere is directly affected by the solar wind. The gyroradii of the solar wind protons are in the range of several hundred kilometers and therefore comparable with the characteristic scales of the interaction region. Different boundaries emerge from the interaction of the solar wind with the continuously produced ionospheric heavy-ion plasma, which could be identified as a bow shock (BS, ion composition boundary (ICB and magnetic pile up boundary (MPB, where the latter both turn out to coincide. The simulation results regarding the shape and position of these boundaries are in good agreement with the measurements made by Phobos-2 and MGS spacecraft. It is shown that the positions of these boundaries depend essentially on the ionospheric production rate, the solar wind ram pressure, and the often unconsidered electron temperature of the ionospheric heavy ion plasma. Other consequences are rays of planetary plasma in the tail and heavy ion plasma clouds, which are stripped off from the dayside ICB region by some instability.

    Key words. Magnetospheric physics (solar wind interactions with unmagnetized bodies – Space plasma physics (discontinuities; numerical simulation studies

  11. Plasma boundaries at Mars: a 3-D simulation study

    Directory of Open Access Journals (Sweden)

    A. Bößwetter

    2004-12-01

    Full Text Available The interaction of the solar wind with the ionosphere of planet Mars is studied using a three-dimensional hybrid model. Mars has only a weak intrinsic magnetic field, and consequently its ionosphere is directly affected by the solar wind. The gyroradii of the solar wind protons are in the range of several hundred kilometers and therefore comparable with the characteristic scales of the interaction region. Different boundaries emerge from the interaction of the solar wind with the continuously produced ionospheric heavy-ion plasma, which could be identified as a bow shock (BS, ion composition boundary (ICB and magnetic pile up boundary (MPB, where the latter both turn out to coincide. The simulation results regarding the shape and position of these boundaries are in good agreement with the measurements made by Phobos-2 and MGS spacecraft. It is shown that the positions of these boundaries depend essentially on the ionospheric production rate, the solar wind ram pressure, and the often unconsidered electron temperature of the ionospheric heavy ion plasma. Other consequences are rays of planetary plasma in the tail and heavy ion plasma clouds, which are stripped off from the dayside ICB region by some instability. Key words. Magnetospheric physics (solar wind interactions with unmagnetized bodies – Space plasma physics (discontinuities; numerical simulation studies

  12. Cross-sectional measurement of grain boundary segregation using WDS

    Energy Technology Data Exchange (ETDEWEB)

    Christien, F., E-mail: frederic.christien@emse.fr [Laboratoire Georges Friedel, CNRS, Ecole des Mines de Saint-Etienne, 158 Cours Fauriel, 42023 Saint-Etienne (France); Risch, P. [Institut des Matériaux Jean Rouxel (IMN), CNRS, Université de Nantes, Rue Christian Pauc, 44306 Nantes (France)

    2016-11-15

    A new method is proposed for the quantification of grain boundary segregation using Wavelength Dispersive Spectroscopy (WDS) in a Scanning Electron Microscope (SEM). Analyses are undertaken on a simple metallographically polished section of material. The method is demonstrated for the model system of sulphur segregation to nickel grain boundaries. Quantification was carried out from sulphur concentration profiles acquired across 11 grain boundaries of a nickel specimen containing 5.4 wt ppm of sulphur in the bulk and equilibrated at 550 °C. The average sulphur grain boundary concentration determined is µ=35.2 ng cm{sup −2}=6.6×10{sup 14} atoms cm{sup −2}≈0.5 monolayer, which is in good agreement with a previous quantification obtained from SIMS (Secondary Ion Mass Spectrometry) on the same material. However this is lower by a factor of two than the quantification obtained using “surface” techniques on fractured specimens of the same material. With the conditions of analysis used in this study, the limit of detection of the method developed is found to be better than 10% of a sulphur monolayer. - Highlights: • Impurity grain boundary segregation can be measured using WDS in a SEM. • The method proposed is quantitative. • The specimen preparation is simple: metallographical section.

  13. Boundary works of Grindr research

    DEFF Research Database (Denmark)

    Jørgensen, Kristian Møller

    . It can be understood as arising from boundary works (Jamieson 2005, [Auhor of this paper] forthcoming) and thus be ontologically entangled with the meeting of the prospect of boundary transgression that marks the end of intimacy. Lauren Berlant on the other hand sees intimacy as: …the processes by which....... Communications, 36(1), 91–111. Lundby, K. (ed.) (2014). Mediatization of Communication: Handbooks of Communication Science, vol. 21. Berlin: De Gruyter Mouton. Marwick, A., & Boyd, D. (2014). Networked privacy: How teenagers negotiate context in social media. New Media & Society. Markham, A., & Buchanan, E...

  14. Boundary effect in electrorheological fluids.

    Science.gov (United States)

    Gong, X L; Yang, F; Xuan, S H; Zong, L H; Zhu, W; Jiang, W Q

    2011-12-01

    The effect of the boundary friction coefficient on the rheological properties of the electrorheological (ER) fluids in quasistatic and dynamic states is investigated by computer simulation. The relation between the shear stress and the boundary friction coefficient in quasistatic and dynamic states is discussed qualitatively and quantitatively, and the trend matches the previously reported experimental results well. The flow curves of ER fluids, under different friction coefficients, are calculated, and it is found that the friction coefficient affects the flow curves. In two dimensions, the transitions in structure corresponding to the shear stress variations are presented to understand the mechanism of ER fluids.

  15. Information dynamics of boundary perception

    DEFF Research Database (Denmark)

    Kragness, Haley; Hansen, Niels Christian; Vuust, Peter

    It has long been noted that expert musicians lengthen notes at phrase boundaries in expressive performance. Recently, we have extended research on this phenomenon by showing that undergraduates with no formal musical training and children as young as 3 years lengthen phrase boundaries during self......-paced listening to chord sequences in a lab setting (the musical dwell-time effect). However, the origin of the musical dwell-time effect is still unknown. Recent work has demonstrated that musicians and non-musicians are sensitive to entropy in musical sequences, experiencing high-entropy contexts as more...

  16. Tropical cyclone boundary layer shocks

    OpenAIRE

    Slocum, Christopher J.; Williams, Gabriel J.; Taft, Richard K.; Wayne H. Schubert

    2014-01-01

    This paper presents numerical solutions and idealized analytical solutions of axisymmetric, $f$-plane models of the tropical cyclone boundary layer. In the numerical model, the boundary layer radial and tangential flow is forced by a specified pressure field, which can also be interpreted as a specified gradient balanced tangential wind field $v_{\\rm gr}(r)$ or vorticity field $\\zeta_{\\rm gr}(r)$. When the specified $\\zeta_{\\rm gr}(r)$ field is changed from one that is radially concentrated i...

  17. A summarized discussion of current good manufacturing practice regulations.

    Science.gov (United States)

    Allen, Loyd V

    2013-01-01

    In light of recent events and discussions of compounding pharmacy, it is important to discuss and understand the purpose of good manufacturing practices. This article provides a summary of the current Good Manufacturing Practice Regulations which were established by the U.S. Food and Drug Administration.

  18. 24 CFR 3500.7 - Good faith estimate.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Good faith estimate. 3500.7 Section 3500.7 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued... DEVELOPMENT REAL ESTATE SETTLEMENT PROCEDURES ACT § 3500.7 Good faith estimate. (a) Lender to provide. (1...

  19. Ventilation, good indoor air quality and rational use of energy

    DEFF Research Database (Denmark)

    Clausen, Geo; Fernandes, E. D. O.; DeGids, W.

    2003-01-01

    The aim of this report is to provide information and advice to policy and decission makers, researchers, architects, designers, and manufacturers on strategies for achieving a good balance between good indoor air quality (IAQ) and the rational use of Energy in buildings, available guidelines...

  20. Perceptual boundaries cause mnemonic trade-offs between local boundary processing and across-trial associative binding.

    Science.gov (United States)

    Heusser, Andrew C; Ezzyat, Youssef; Shiff, Ilana; Davachi, Lila

    2018-02-19

    Episodic memories are not veridical records of our lives, but rather are better described as organized summaries of experience. Theories and empirical research suggest that shifts in perceptual, temporal, and semantic information lead to a chunking of our continuous experiences into segments, or "events." However, the consequences of these contextual shifts on memory formation and organization remains unclear. In a series of 3 behavioral studies, we introduced context shifts (or "event boundaries") between trains of stimuli and then examined the influence of the boundaries on several measures of associative memory. In Experiment 1, we found that perceptual event boundaries strengthened associative binding of item-context pairings present at event boundaries. In Experiment 2, we observed reduced temporal order memory for items encoded in distinct events relative to items encoded within the same event, and a trade-off between the speed of processing at boundaries, and temporal order memory for items that flanked those boundaries. Finally, in Experiment 3 we found that event organization imprinted structure on the order in which items were freely recalled. These results provide insight into how boundary- and event-related organizational processes during encoding shape subsequent representations of events in episodic memory. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  1. AGN Variability in the GOODS Fields

    Science.gov (United States)

    Sarajedini, Vicki

    2007-07-01

    Variability is a proven method to identify intrinsically faint active nuclei in galaxies found in deep HST surveys. We propose to extend our short-term variability study of the GOODS fields to include the more recent epochs obtained via supernovae searchers, increasing the overall time baseline from 6 months to 2.5 years. Based on typical AGN lightcurves, we expect to detect 70% more AGN by including these more recent epochs. Variable-detected AGN samples complement current X-ray and mid-IR surveys for AGN by providing unambigous evidence of nuclear activity. Additionallty, a significant number of variable nuclei are not associated with X-ray or mid-IR sources and would thus go undetected. With the increased time baseline, we will be able to construct the structure function {variability amplitude vs. time} for low-luminosity AGN to z 1. The inclusion of the longer time interval will allow for better descrimination among the various models describing the nature of AGN variability. The variability survey will be compared against spectroscopically selected AGN from the Team Keck Redshift Survey of the GOODS-N and the upcoming Flamingos-II NIR survey of the GOODS-S. The high-resolution ACS images will be used to separate the AGN from the host galaxy light and study the morphology, size and environment of the host galaxy. These studies will address questions concerning the nature of low-luminosity AGN evolution and variability at z 1.

  2. Maritime Transport and Risks of Packaged Dangerous Goods

    OpenAIRE

    Mullai, Arben

    2006-01-01

    This report deals with the maritime transport system of packaged dangerous goods (PDG) and principles of risks of marine accidents/incidents involving dangerous goods. The report has been part of the Safe and Reliable Transport Chains of Dangerous Goods in the Baltic Sea Region (DaGoB) project and the author’s own research. The main aims of the DaGoB project included: a) improve co-operations at various levels among parties concerned in transport of dangerous goods in the BSR; b) provide up...

  3. Agronomy, sustainability and good agricultural practices

    Directory of Open Access Journals (Sweden)

    Caliman Jean-Pierre

    2005-03-01

    Full Text Available Sustainable palm oil production needs to be based on the application of a code of good practices, respecting a certain number of criteria related to economic, environmental and social aspects. We focus here on economic and environmental aspects, attempting to take stock of the current situation regarding the management of inputs (fertilizers, pesticides, and of oil mill waste (empty fruit bunches, effluent. We also take a look at the main agricultural research required if we are to be able to assess the situation on different scales and see how it is evolving, and also provide assistance for rational management that is compatible with farmers’ production targets.

  4. Guide to good practices for communications

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-12-01

    This Guide to Good Practices is written to enhance understanding of, and provide direction for, Communications, Chapter 4 of Department of Energy (DOE) Order 5480.19, Conduct of Operations Requirements for DOE Facilities. The practices in this guide should be considered when planning or reviewing communication programs. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19. ``Communications`` is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for high reliability in communications to promote safe and efficient operations.

  5. Technical Excellence: A Requirement for Good Engineering

    Science.gov (United States)

    Gill, Paul S.; Vaughan, William W.

    2008-01-01

    Technical excellence is a requirement for good engineering. Technical excellence has many different ways of expressing itself within engineering. NASA has initiatives that address the enhancement of the Agency's technical excellence and thrust to maintain the associated high level of performance by the Agency on current programs/projects and as it moves into the Constellation Program and the return to the Moon with plans to visit Mars. This paper addresses some of the key initiatives associated with NASA's technical excellence thrust. Examples are provided to illustrate some results being achieved and plans to enhance these initiatives.

  6. Professional boundaries violations: case studies from a regulatory perspective.

    Science.gov (United States)

    Fischer, Holly R; Houchen, Betsy J; Ferguson-Ramos, Lisa

    2008-01-01

    This article provides case studies in professional boundaries violations from a state regulatory perspective. All cases discussed are actual cases that occurred in the state of Ohio, based on complaints investigated by the Ohio Board of Nursing. The studies set forth basic factual information related to the boundary violation, relevant law and administrative regulations, and disciplinary outcomes. One can conclude that boundaries violations that result in licensure board disciplinary sanctions typically involve gross or egregious conduct rather than subtle or transitional zone conduct. These cases tend to involve recurring patterns that may be categorized as involving 2 factors: (1) high patient vulnerability and (2) prolonged patient contact. Often, the 2 patterns coalesce. Administrators, directors of nursing, and supervisors in these patient populations and in the settings discussed should be particularly mindful of potential boundary violation behavioral indicators.

  7. Studies of Grain Boundaries in Materials Subjected to Diffusional Creep

    DEFF Research Database (Denmark)

    Nørbygaard, Thomas

    Grain boundaries in crystalline Cu(2%Ni) creep specimens have been studied by use of scanning and transmission electron microscopy in order to establish the mechanism of deformation. Creep rate measurements and dependencies were found to fit reasonably well with the model for diffusional creep......) with the activity displayed during diffusional creep testing. It was found that boundaries with low deviation from perfect Σ did not contribute macroscopically to the creep strain. A resist deposition procedure was examined to improve the reference surface grid so as to allow determination of the grain boundary...... plane by use of simple stereomicroscopy directly on the surface. The etched pattern deteriorated heav-ily during creep testing, supposedly because of dislocation creep, due to exces-sive creep stress. Grain boundaries have been studied and characterised by TEM providing an insight into the diversity...

  8. Participatory ergonomics in design processes: the role of boundary objects.

    Science.gov (United States)

    Broberg, Ole; Andersen, Vibeke; Seim, Rikke

    2011-03-01

    The aim of this paper is to introduce the concept of boundary objects in order to better understand the role of objects in participatory ergonomics (PE) design processes. The research question is: What characterizes boundary objects in PE processes? Based on two case studies, we identify eight characteristics of boundary objects and their use, which make them particularly useful in PE design processes. These characteristics go beyond the object itself and extend into the context of their use. We argue that the selection of boundary objects in PE processes is of great importance, since different objects enable workers' participation and collaborative design in different ways. The framework developed may serve to provide criteria to guide practitioners and intervention researchers in the selection of objects to facilitate a PE process. The paper concludes with a list of recommendations for ergonomic practitioners that are based on the framework. Copyright © 2010 Elsevier Ltd and The Ergonomics Society. All rights reserved.

  9. Bristled shark skin: a microgeometry for boundary layer control?

    Energy Technology Data Exchange (ETDEWEB)

    Lang, A W; Hidalgo, P; Westcott, M [Aerospace Engineering and Mechanics Department, University of Alabama, Box 870280, Tuscaloosa, AL 35487 (United States); Motta, P [Biology Department, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620 (United States)], E-mail: alang@eng.ua.edu

    2008-12-01

    There exists evidence that some fast-swimming shark species may have the ability to bristle their scales during fast swimming. Experimental work using a water tunnel facility has been performed to investigate the flow field over and within a bristled shark skin model submerged within a boundary layer to deduce the possible boundary layer control mechanisms being used by these fast-swimming sharks. Fluorescent dye flow visualization provides evidence of the formation of embedded cavity vortices within the scales. Digital particle image velocimetry (DPIV) data, used to evaluate the cavity vortex formation and boundary layer characteristics close to the surface, indicate increased momentum in the slip layer forming above the scales. This increase in flow velocity close to the shark's skin is indicative of boundary layer control mechanisms leading to separation control and possibly transition delay for the bristled shark skin microgeometry.

  10. Reflection of Spin Waves From the Boundary of Ferromagnetic Medium under Generalized Boundary Conditions

    OpenAIRE

    Danoyan Z.N.; Atoyan L.H.

    2010-01-01

    In the paper reflection problem of an incident bulk ferromagnetic spin-wave is solved. The wave reflects from the ferromagnetic medium surface, when on the surface are given the generalized boundary conditions for magnetization density [4]. Solution of the problem provides a foundation to confirm, that in ferromagnetic medium appears two non-homogeneous accompanying surface waves, besides of the mirror reflected wave. The two surface waves propagation velocities are the same, but coefficients...

  11. Air movement - good or bad?

    DEFF Research Database (Denmark)

    Toftum, Jørn

    2004-01-01

    Air movement - good or bad? The question can only be answered by those who are exposed when they are exposed. Human perception of air movement depends on environmental factors including air velocity, air velocity fluctuations, air temperature, and personal factors such as overall thermal sensation...... and activity level. Even for the same individual, sensitivity to air movement may change from day to day as a result of e.g. different levels of fatigue. Based on existing literature, the current paper summarizes factors influencing the human perception of air movement and attempts to specify in general terms...... when air movement is desirable and when it is not. At temperatures up to 22-23oC, at sedentary activity and with occupants feeling neutral or cooler there is a risk of air movement being perceived as unacceptable, even at low velocities. In particular, a cool overall thermal sensation negatively...

  12. [Good clinical practice in nebulization].

    Science.gov (United States)

    Dautzenberg, B; Fauroux, B; Bonfils, P; Diot, P; Faurisson, F

    1998-01-01

    A meeting on nebulization held in April 1997 defined good clinical practices. Guidelines that were proposed pertained to the following: pneumatic and ultrasonic nebulizers; delivering circuit, occluded or not, the choice of the tip being done according to the disease to treat and to the drugs to be delivered; various functions, depending on the type of nebulizer; the particle size, as it will indicate which disease may be treated: between 2 and 6 microns for bronchi, between 0.5 et 3 microns for lung, > 5 microns for ear, nose and throat diseases; compatibility between the type of nebulizer and drugs. Ten drugs are currently registered in France. Nebulization has multiple clinical indications, such as asthma, cystic fibrosis, chronic obstructive pulmonary disease, Pneumocystis carinii pneumonia, acute laryngitis, and in infants, acute bronchiolitis. The prescription must be detailed, and the physician should make sure that the medical staff put it into application.

  13. Showing the Good Side, Too

    Science.gov (United States)

    Alley, R. B.

    2016-12-01

    With very high scientific confidence, we are raising atmospheric CO2 primarily by burning fossil fuels, this is changing the climate, and this will affect us, with each degree of warming more costly than the previous degree. The uncertainties of continuing to burn fossil fuels and release the CO2 include futures a little less challenging or a little more challenging or a lot more challenging; the possibility of "really bad" is not balanced by a similar possibility of "really good". But, we are the first generation that knows how to build a sustainable energy system, and the evidence is quite clear that wise policies respecting the science can help the economy as well as the environment. If the "social cost of carbon" were viewed as "the profit waiting to be made", perhaps students would more accurately evaluate the choices available to them.

  14. Reputational concerns with altruistic providers.

    Science.gov (United States)

    Olivella, Pau; Siciliani, Luigi

    2017-09-01

    We study a model of reputational concerns when doctors differ in their degree of altruism and they can signal their altruism by their (observable) quality. When reputational concerns are high, following the introduction or enhancement of public reporting, the less altruistic (bad) doctor mimics the more altruistic (good) doctor. Otherwise, either a separating or a semi-separating equilibrium arises: the bad doctor mimics the good doctor with probability less than one. Pay-for-performance incentive schemes are unlikely to induce crowding out, unless some dimensions of quality are unobservable. Under the pooling equilibrium a purchaser can implement the first-best quality by appropriately choosing a simple payment scheme with a fixed price per unit of quality provided. This is not the case under the separating equilibrium. Therefore, policies that enhance public reporting complement pay-for-performance schemes. Copyright © 2017 Elsevier B.V. All rights reserved.

  15. Seismic link at plate boundary

    Indian Academy of Sciences (India)

    ... tested using the coherence of time series to determine the causality and related orientation. The resulting link orientations at the plate boundary conditions indicate that causal triggering seems to be localized along a major fault, as a stress transfer between two major faults, and parallel to the geothermal area extension.

  16. Current Sinkhole Boundaries in Iowa

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — This dataset is a polygon coverage of the sinkhole boundaries as determined by using LiDAR data. The polygons relate to the point coverage using the KPolyID field in...

  17. Humor styles and symbolic boundaries

    NARCIS (Netherlands)

    Kuipers, G.

    2009-01-01

    Humor is strongly related to group boundaries. Jokes and other humorous utterances often draw on implicit references and inside knowledge; they tend to refer to sensitive topics which may offend people; and they ideally incite laughter, one of the strongest markers of social solidarity and emotional

  18. On Boundaries in Linguistic Continua.

    Science.gov (United States)

    Jorgensen, J. Normann; Kristensen, Kjeld

    1995-01-01

    Discusses the notion of regional standards of a language with regard to modern Danish. Regional and national standards of a language as well as local dialect are defined. The article shows that, for a geographical entity, a statistically determined boundary can be established in the range between the extremes of a regional dialect and national…

  19. Boundaries of flat compact surfaces

    DEFF Research Database (Denmark)

    Røgen, Peter

    1999-01-01

    type. The number of $3$-singular points (points of zero curvature or if not then of zero torsion) on the boundary of a flat immersed compact surface is greater than or equal to twice the absolute value of the Euler characteristic of the surface. A set of necessary and, in a weakened sense, sufficient...

  20. 'Regime shopping' across (blurring) boundaries

    NARCIS (Netherlands)

    Houwerzijl, M.S.; Evju, Stein

    2014-01-01

    This book chapter identifies and explores the (blurring) boundaries between the legal regimes for labour mobility across the EU. In the context of - what is sometimes called - 'regime shopping' a close look is taken into the law on freedom of movement within the EU. Several categories of

  1. the Martian atmospheric boundary layer

    DEFF Research Database (Denmark)

    Petrosyan, A.; Galperin, B.; Larsen, Søren Ejling

    2011-01-01

    The planetary boundary layer (PBL) represents the part of the atmosphere that is strongly influenced by the presence of the underlying surface and mediates the key interactions between the atmosphere and the surface. On Mars, this represents the lowest 10 km of the atmosphere during the daytime...

  2. BRIDGES ACROSS AFRICA'S INTERNATIONAL BOUNDARIES ...

    African Journals Online (AJOL)

    The empirical data for this paper is drawn from the ethnic minorities divided along and astride the Cross River borderlands with southern Cameroon. Scholars who have studied the Nigeria Cameroon Boundary tend to lay more emphasis on the state centric perspective that continues to operate largely within the framework ...

  3. Editorial: Environmentalists without Boundaries | Ogunseitan ...

    African Journals Online (AJOL)

    African Journal of Environmental Science and Technology. Journal Home · ABOUT · Advanced Search · Current Issue · Archives · Journal Home > Vol 3, No 3 (2009) >. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register. Editorial: Environmentalists without Boundaries.

  4. Defining a Good Death: A deliberative democratic view.

    Science.gov (United States)

    Raisio, Harri; Vartiainen, Pirkko; Jekunen, Antti

    2015-01-01

    Many attempts to define a good death have been recorded in the academic literature. In most of these attempts, the methods used have been surveys, interviews, and focus groups. These methods have yielded important information, but they have failed to provide an opportunity for public deliberation, whereby people engage collectively with an issue, consider it from all sides, and struggle to understand it. We believe that a well-orchestrated public deliberation could contribute to defining a good death. We gathered data from four deliberative forums implemented in Finland in November 2013. The results paint a picture that differs from those painted by the previous research, which focused mainly on individual and idealized views of a good death. Our findings have brought to light the messy reality of a good death. Deliberation elicited the concern that society could not provide a good death for all and in the process highlighted the lack of proper palliative care and the dominant role of healthcare professionals in defining a good death. Participants also came to terms with the inherent complexity of dying well and gained a better understanding of the challenges related to providing a good death via euthanasia. Their perspectives broadened, proving that defining a good death is a dynamic process rather than a static one.

  5. Managing Boundaries in the Web 2.0 Classroom

    Science.gov (United States)

    McEwan, Bree

    2012-01-01

    This chapter explores the use of social media in the higher education classroom highlighting potential issues for student-faculty boundary management and providing suggestions for praxis. Social media has captured the attention of educators and provides exciting new ways to engage students in course material. However, instructors and students…

  6. Subauroral polarization stream on the outer boundary of the ring current during an energetic ion injection event

    Science.gov (United States)

    Yuan, Zhigang; Qiao, Zheng; Li, Haimeng; Huang, Shiyong; Wang, Dedong; Yu, Xiongdong; Yu, Tao

    2017-04-01

    Subauroral polarization stream (SAPS) electric field can play an important role in the coupling between the inner magnetosphere and ionosphere; however, the production mechanism of SAPS has not been yet solved. During an energetic ion injection event on 26 March 2004, at latitudes lower than the equatorward boundaries of precipitating plasma sheet electrons and ions, the Defense Meteorological Satellite Program (DMSP) F13 satellite simultaneously observed a strong SAPS with the peak velocity of 1294 m/s and downward flowing field-aligned currents (FACs). Conjugate observations of DMSP F13 and NOAA 15 satellites have shown that FACs flowing into the ionosphere just lie in the outer boundary of the ring current (RC). The downward flowing FACs were observed in a region of positive latitudinal gradients of the ion energy density, implying that the downward flowing FACs are more likely linked to the azimuthal gradient than the radial gradient of the RC ion pressure. Our result demonstrates that RC ion pressure gradients on the outer boundary of the RC in the evening sector during energetic ion injection events can lead to downward flowing FACs so as to cause strong SAPS in condition of low ionospheric conductivities.Plain Language SummaryThis paper provides a good case that the SAPS and FAC occurred in the outer boundary of the ring current during an energetic ion injection event. Our result demonstrates that RC ion pressure gradients on the outer boundary of the RC in the evening sector during energetic ion injection events can lead to downward flowing FACs so as to cause strong SAPS in condition of low ionospheric conductivities.

  7. Grain Boundary Engineering of Electrodeposited Thin Films

    DEFF Research Database (Denmark)

    Alimadadi, Hossein

    of the favorable boundaries that break the network of general grain boundaries. Successful dedicated synthesis of a textured nickel film fulfilling the requirements of grain boundary engineered materials, suggests improved boundary specific properties. However, the textured nickel film shows fairly low......Grain boundary engineering aims for a deliberate manipulation of the grain boundary characteristics to improve the properties of polycrystalline materials. Despite the emergence of some successful industrial applications, the mechanism(s) by which the boundary specific properties can be improved...... to engineer new materials. In this study, one of the most widely used electrolytes for electrodeposition is chosen for the synthesis of nickel films and based on thorough characterization of the boundaries the potentials in grain boundary engineering are outlined. The internal structure of the nickel films...

  8. HONESTY AND GOOD PRACTICE IN SCIENTIFIC RESEARCH

    Directory of Open Access Journals (Sweden)

    Jože Trontelj

    2008-01-01

    public, but also mutual trust among scientiststhemselves. Moreover, false results and conclusions may mislead other scientists and usersof scientific achievements.European incentives have been launched to encourage awareness of ethical dimensionsof science, to accept and follow rules of good practice in scientific research and scholarship,and to set up mechanisms for investigating cases of alleged violation of good practice,misconduct and fraud. Most countries have codes of good scientific practice or otherwritten ethical standards of scientific research.Advantages of such codes include educational and preventive effects, they can increaseethical sensitivity of the individual researcher. On the other hand, a code of good scientificpractice can provide useful guidelines in evaluating complex situations. Finally, theknowledge that such codes exist and are used may increase public confidence in science.Complete prevention of dishonesty is equally impossible in science as it is in other walks oflife. However safeguards can and must be established. What is necessary is that not onlyevery individual scientist and scholar, but especially institutions of science – universities,research institutes, learned societies, scientific journals, funding organizations – developa consciousness of good scientific practice and apply it in their day-to-day work. On theother hand, environment fostering moral integrity in science should be created. An importantpart of this should be development of an evaluation system which is not based onquantity but rather on quality of scientific achievements. A national code of conduct andgood practice in scientific research is needed. A system of efficient handling cases of allegedmisconduct should be put in place. Special attention must be devoted to the education ofyoung scientists towards responsible research.

  9. Comparative Assessment of Goods and Services Provided by Grazing Regulation and Reforestation in Degraded Mediterranean Rangelands

    NARCIS (Netherlands)

    Papanastasis, Vasilios P.; Bautista, Susana; Chouvardas, Dimitrios; Mantzanas, Konstantinos; Papadimitriou, Maria; Garcia Mayor, Angeles; Koukioumi, Polina; Papaioannou, Athanasios; Vallejo, Ramon V.

    2017-01-01

    Several management actions are applied to restore ecosystem services in degraded Mediterranean rangelands, which range from adjusting the grazing pressure to the removal of grazers and pine plantations. Four such actions were assessed in Quercus coccifera L. shrublands in northern Greece: (i)

  10. Growth in Euro imports will provide Colombian coal with `a good home`

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-04-01

    For most of the past year, Colombia`s coal industry had remained largely unaffected by the oversupply which has crippled Australian and Indonesian producers in the Pacific market. The last few months, however, have seen prices squeezed below the 30.00/t US dollars FOBT mark. So, after a year of consolidation of assets in 1997, the future once again looks more uncertain, certainly at this far into 1998. Rail and port infrastructures is the main topic for discussions and the government, as always, is deeply involved in the negotiations. All this amongst the usual backdrop of guerrillas, paramilitary, sabotage and - this year- presidential elections. Not a place for the faint-hearted. The merger of Prodeco Amcoal and Rio Tinto`s Central Cerrejon and Oreganal operations is noted as is the situation of other producers. Prices have fallen but show few signs of falling further. 2 photos.

  11. Continuous Passive Motion Provides Good Pain Control in Patients with Adhesive Capsulitis

    Science.gov (United States)

    Dundar, Umit; Toktas, Hasan; Cakir, Tuncay; Evcik, Deniz; Kavuncu, Vural

    2009-01-01

    Painful stiffening of the shoulder, "frozen shoulder" is a common cause of shoulder pain and disability. Continuous passive motion (CPM) is an established method of preventing joint stiffness and of overcoming it. A randomized, comparative prospective clinical trial was planned to compare the early response with different rehabilitation…

  12. Can seamounts provide a good habitat for polychaete annelids? Example of the northeastern Atlantic seamounts

    Science.gov (United States)

    Surugiu, Victor; Dauvin, Jean-Claude; Gillet, Patrick; Ruellet, Thierry

    2008-11-01

    Two seamount groups in the northeastern Atlantic were investigated during the 1980s and 1990s: the first was located along the Iberian and African coasts (Galicia, to the north of Portugal; and the Ampere, Gorringe, Josephine and Seine banks near the Madeira-Canary Islands) and the second was located offshore of the southern part of the Azores Islands, included the Atlantis, Hyeres, Irving, Meteor and Plato banks. Among the invertebrates, Annelida, specifically Polychaeta, were studied as surrogates for the biogeographical relationship between coastal and mid-oceanic seamounts in the northeastern Atlantic and the fauna in these areas. The dominant families were Onuphidae (27.46%), Syllidae (18.23%), Eunicidae (15.65%), Amphinomidae (11.45%) and Nereididae (5.61%), representing 78.4% of the total fauna. Data analyses clearly distinguished two seamount groups, one for coastal seamounts and the other offshore. Although the species distinguished and the family composition at the sampled sites were different (i.e., most diversified at the Josephine site and most impoverished at the Irving site), no coastal/offshore faunal impoverishment gradient could be identified. Thus, it seems that seamount environments do not favour any relationship between planktotrophic development and the direct development of polychaetes. Though the number of apparent endemic species was low (<7%), it remained in keeping with other invertebrate groups. Still, while seamounts may well encourage oceanic biodiversity in some zoological groups, this was clearly not the case for the polychaetes. We offer two explanations for this paradox: pelagic productivity and local environmental conditions.

  13. Straight Talk for Good Health

    Science.gov (United States)

    ... diagnosis and prescribed treatments. Ask your healthcare provider to write down his or her instructions to you. If ... up words. Just go to medlineplus.gov/mplusdictionary.html and enter the word you're looking for. ...

  14. Chi-squared goodness of fit tests with applications

    CERN Document Server

    Balakrishnan, N; Nikulin, MS

    2013-01-01

    Chi-Squared Goodness of Fit Tests with Applications provides a thorough and complete context for the theoretical basis and implementation of Pearson's monumental contribution and its wide applicability for chi-squared goodness of fit tests. The book is ideal for researchers and scientists conducting statistical analysis in processing of experimental data as well as to students and practitioners with a good mathematical background who use statistical methods. The historical context, especially Chapter 7, provides great insight into importance of this subject with an authoritative author team

  15. Papillary Thyroid Cancer: The Good and Bad of the "Good Cancer".

    Science.gov (United States)

    Randle, Reese W; Bushman, Norah M; Orne, Jason; Balentine, Courtney J; Wendt, Elizabeth; Saucke, Megan; Pitt, Susan C; Macdonald, Cameron L; Connor, Nadine P; Sippel, Rebecca S

    2017-07-01

    Papillary thyroid cancer is often described as the "good cancer" because of its treatability and relatively favorable survival rates. This study sought to characterize the thoughts of papillary thyroid cancer patients as they relate to having the "good cancer." This qualitative study included 31 papillary thyroid cancer patients enrolled in an ongoing randomized trial. Semi-structured interviews were conducted with participants at the preoperative visit and two weeks, six weeks, six months, and one year after thyroidectomy. Grounded theory was used, inductively coding the first 113 interview transcripts with NVivo 11. The concept of thyroid cancer as "good cancer" emerged unprompted from 94% (n = 29) of participants, mostly concentrated around the time of diagnosis. Patients encountered this perception from healthcare providers, Internet research, friends, and preconceived ideas about other cancers. While patients generally appreciated optimism, this perspective also generated negative feelings. It eased the diagnosis of cancer but created confusion when individual experiences varied from expectations. Despite initially feeling reassured, participants described feeling the "good cancer" characterization invalidated their fears of having cancer. Thyroid cancer patients expressed that they did not want to hear that it's "only thyroid cancer" and that it's "no big deal," because "cancer is cancer," and it is significant. Patients with papillary thyroid cancer commonly confront the perception that their malignancy is "good," but the favorable prognosis and treatability of the disease do not comprehensively represent their cancer fight. The "good cancer" perception is at the root of many mixed and confusing emotions. Clinicians emphasize optimistic outcomes, hoping to comfort, but they might inadvertently invalidate the impact thyroid cancer has on patients' lives.

  16. Stabilizing the earth's climate is not a losing game: supporting evidence from public goods experiments.

    Science.gov (United States)

    Milinski, Manfred; Semmann, Dirk; Krambeck, Hans-Jürgen; Marotzke, Jochem

    2006-03-14

    Maintaining the Earth's climate within habitable boundaries is probably the greatest "public goods game" played by humans. However, with >6 billion "players" taking part, the game seems to rule out individual altruistic behavior. Thus, climate protection is a problem of sustaining a public resource that everybody is free to overuse, a "tragedy of the commons" problem that emerges in many social dilemmas. We perform a previously undescribed type of public goods experiment with human subjects contributing to a public pool. In contrast to the standard protocol, here the common pool is not divided among the participants; instead, it is promised that the pool will be invested to encourage people to reduce their fossil fuel use. Our extensive experiments demonstrate that players can behave altruistically to maintain the Earth's climate given the right set of circumstances. We find a nonzero basic level of altruistic behavior, which is enhanced if the players are provided with expert information describing the state of knowledge in climate research. Furthermore, personal investments in climate protection increase substantially if players can invest publicly, thus gaining social reputation. This increase occurs because subjects reward other subjects' contributions to sustaining the climate, thus reinforcing their altruism. Therefore, altruism may convert to net personal benefit and to relaxing the dilemma if the gain in reputation is large enough. Our finding that people reward contributions to sustaining the climate of others is a surprising result. There are obvious ways these unexpected findings can be applied on a large scale.

  17. 42 CFR 93.210 - Good faith.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Good faith. 93.210 Section 93.210 Public Health... MISCONDUCT Definitions § 93.210 Good faith. Good faith as applied to a complainant or witness, means having a... allegation or cooperation with a research misconduct proceeding is not in good faith if made with knowing or...

  18. Therapy Provider Phase Information

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Therapy Provider Phase Information dataset is a tool for providers to search by their National Provider Identifier (NPI) number to determine their phase for...

  19. Qualities of a good reviewer

    KAUST Repository

    Bui, Huyen

    2017-07-22

    Interpretation shares commonalities with Geophysics and the AAPG Bulletin in that it is a peer-reviewed journal. Unlike Geophysics and the AAPG Bulletin, Interpretation is built around special sections headed by a team of special-section editors who are either experts or particularly interested in the focused area. In addition to constructing a Call for Papers announcing their special section, the special-section editors also will solicit papers from colleagues, competitors, technology suppliers, and others that they believe may have contributions of interest to the Interpretation readership community. Submitted papers then are assigned by the special editors to three or more reviewers, many of whom are contributors to (and hence expert in) the same special-section topic. By design, the special section-structure of Interpretation reaches authors, editors, and reviewers who previously may not have been involved in the peer-review process. Recognizing this fact, in this article the standing editorial board attempts to summarize some of the more important qualities of what we find to be a good reviewer.

  20. Is normal science good science?

    Directory of Open Access Journals (Sweden)

    Adrianna Kępińska

    2015-09-01

    Full Text Available “Normal science” is a concept introduced by Thomas Kuhn in The Structure of Scientific Revolutions (1962. In Kuhn’s view, normal science means “puzzle solving”, solving problems within the paradigm—framework most successful in solving current major scientific problems—rather than producing major novelties. This paper examines Kuhnian and Popperian accounts of normal science and their criticisms to assess if normal science is good. The advantage of normal science according to Kuhn was “psychological”: subjective satisfaction from successful “puzzle solving”. Popper argues for an “intellectual” science, one that consistently refutes conjectures (hypotheses and offers new ideas rather than focus on personal advantages. His account is criticized as too impersonal and idealistic. Feyerabend’s perspective seems more balanced; he argues for a community that would introduce new ideas, defend old ones, and enable scientists to develop in line with their subjective preferences. The paper concludes that normal science has no one clear-cut set of criteria encompassing its meaning and enabling clear assessment.

  1. Some considerations on Transparency, Accountability and Good Governance in Church Finances

    DEFF Research Database (Denmark)

    Christoffersen, Lisbet

    2013-01-01

    Also churches and religious communities need to be accountable for the ressources they are taking care of. Transparency and accountability both internally and externally seems inescapable, but also dimensions of good governance are relevant unless freedom of religion sets clear boundaries...

  2. Information Technology for Good (IT4G): Merging Information Technology with Social Responsibility

    Science.gov (United States)

    Saulnier, Bruce

    2013-01-01

    A case is made for a new approach to higher education in the 21st century, an approach in which the traditional majors are extended beyond their usual boundaries by applying one's education to address the public good. The LEAP initiative and the Learning Paradigm College are advanced as exemplars of effective 21st century educational practices,…

  3. Turbine exhaust diffuser with region of reduced flow area and outer boundary gas flow

    Science.gov (United States)

    Orosa, John

    2014-03-11

    An exhaust diffuser system and method for a turbine engine. The outer boundary may include a region in which the outer boundary extends radially inwardly toward the hub structure and may direct at least a portion of an exhaust flow in the diffuser toward the hub structure. At least one gas jet is provided including a jet exit located on the outer boundary. The jet exit may discharge a flow of gas downstream substantially parallel to an inner surface of the outer boundary to direct a portion of the exhaust flow in the diffuser toward the outer boundary to effect a radially outward flow of at least a portion of the exhaust gas flow toward the outer boundary to balance an aerodynamic load between the outer and inner boundaries.

  4. Free boundary ballooning mode representation

    Science.gov (United States)

    Zheng, L. J.

    2012-10-01

    A new type of ballooning mode invariance is found in this paper. Application of this invariance is shown to be able to reduce the two-dimensional problem of free boundary high n modes, such as the peeling-ballooning modes, to a one-dimensional problem. Here, n is toroidal mode number. In contrast to the conventional ballooning representation, which requires the translational invariance of the Fourier components of the perturbations, the new invariance reflects that the independent solutions of the high n mode equations are translationally invariant from one radial interval surrounding a single singular surface to the other intervals. The conventional ballooning mode invariance breaks down at the vicinity of plasma edge, since the Fourier components with rational surfaces in vacuum region are completely different from those with rational surfaces in plasma region. But, the new type of invariance remains valid. This overcomes the limitation of the conventional ballooning mode representation for studying free boundary modes.

  5. Helmholtz bright and boundary solitons

    Energy Technology Data Exchange (ETDEWEB)

    Christian, J M [Joule Physics Laboratory, School of Computing, Science and Engineering, Institute for Materials Research, University of Salford, Salford M5 4WT (United Kingdom); McDonald, G S [Joule Physics Laboratory, School of Computing, Science and Engineering, Institute for Materials Research, University of Salford, Salford M5 4WT (United Kingdom); Chamorro-Posada, P [Departmento de TeorIa de la Senal y Comunicaciones e IngenierIa Telematica, Universidad de Valladolid, ETSI Telecomunicacion, Campus Miguel Delibes s/n, 47011 Valladolid (Spain)

    2007-02-16

    We report, for the first time, exact analytical boundary solitons of a generalized cubic-quintic nonlinear Helmholtz (NLH) equation. These solutions have a linked-plateau topology that is distinct from conventional dark soliton solutions; their amplitude and intensity distributions are spatially delocalized and connect regions of finite and zero wave-field disturbances (suggesting also the classification as 'edge solitons'). Extensive numerical simulations compare the stability properties of recently derived Helmholtz bright solitons, for this type of polynomial nonlinearity, to those of the new boundary solitons. The latter are found to possess a remarkable stability characteristic, exhibiting robustness against perturbations that would otherwise lead to the destabilizing of their bright-soliton counterparts.

  6. Defining Our National Cyberspace Boundaries

    Science.gov (United States)

    2010-02-17

    took place within our national cyberspace boundaries. 14. ABSTRACT Cyber Borders, Cyberspace National Policy, Convention On The Law Of Cyberspace... The Law Of Cyberspace, Cyberspace Law, Cyberspace Theory CLASSIFICATION: Unclassified In February 2009, the Obama Administration...Justinian” to the more recent United Nations “Convention on the Law of the Sea” approved in 1982 by 150 12 countries.22 Risk is an area that is not as

  7. Bridging boundaries: CORBA in perspective.

    OpenAIRE

    Cahill, Vinny; Baker, Sean; Nixon, Paddy

    1997-01-01

    peer-reviewed peer-reviewed applications that cross the boundaries of different computing machines, operating systems, and programming languages are increasingly the norm. As a result, the need for what might be called ???bridging technologies??? to develop software that works across heterogeneous environments has become more compelling. The Common Object Request Broker Architecture is one such technology that is both robust and commercially available. CORBA essentially describes...

  8. Bridging boundaries: CORBA in perspective.

    OpenAIRE

    Cahill, Vinny

    1997-01-01

    PUBLISHED pplications that cross the boundaries of different computing machines, operating systems, and programming languages are increasingly the norm. As a result, the need for what might be called ?bridging technologies? to develop software that works across heterogeneous environments has become more compelling. The Common Object Request Broker Architecture is one such technology that is both robust and commercially available. CORBA essentially describes how client app...

  9. Working across Boundaries in Design

    DEFF Research Database (Denmark)

    Clausen, Christian; Yoshinaka, Yutaka

    The paper addresses how insights from the social shaping tradition and political process theory may contribute to an understanding of design as staging of sociotechnical relations and processes cutting across boundaries of diverse organisational, political and knowledge domains. This idea is purs...... organisational practices. One implication of this approach includes an attention towards what (and how) ar-eas may be rendered open to negotiation and transformation in technological design, implementation, and change processes....

  10. Teacher professional boundaries: online & offline

    OpenAIRE

    Morris, Zoe Anna

    2017-01-01

    The 21st century has emerged as an era of accountability and standardisation for the teaching profession (Mikulec & Miller, 2012). The current research is comprised of 4 interrelated empirical studies which measure and explore individual differences in perceptions of teacher-student boundaries in the secondary school context from an ethical perspective. This research is timely given it has been 8 years since the Teacher Code of Conduct was introduced in Victoria (The Institute, 2008). While t...

  11. How Good Are Your Sunglasses?

    Science.gov (United States)

    Novak, Igor

    1997-01-01

    Provides a description of an experiment in which students use a standard ultraviolet and intense blue (UV/VIS) spectrophotometer to measure the amount and energy of light. Explains how a simple measurement of the transmission spectrum of sunglasses can reveal differences between brands and can illustrate the destruction of the earth's ozone layer.…

  12. Good mentors and role models

    Indian Academy of Sciences (India)

    Lawrence

    , strive for excellence, ... TI'S DAUGHTERS. 260 provided me immense support all through. Any success that is attributed to me is because of his support and encouragement. He has always advised me to stand up for what I believed in and not.

  13. Off to a Good Start.

    Science.gov (United States)

    Hoffman, Carl

    1994-01-01

    Caring Start is a mobile-clinic program that provides prenatal care, well-baby clinics, childhood immunizations, counseling services, and contraceptives to rural poor families in northwest Pennsylvania. Before the mobile clinic, many rural women (mostly teenagers) went without prenatal health care due to lack of transportation. (LP)

  14. Borders, boundaries and desirable wishes

    Directory of Open Access Journals (Sweden)

    Luca Pinciaroli

    2015-05-01

    Full Text Available “Borders, boundaries and desirable wishes” is the title of the residential workshop offered to a group of young adults (aged 18-25 of the Centro di Salute Mentale (Mental Health Center of the DSM Basaglia of ASL TO2 in Turin. The idea of the workshop, the definition of the objectives and the topics, which are clearly expressed in the title, come from the work of the team dedicated to group psychotherapies, which has been offering group psychodrama sessions to young adults of this age since 2008. In the delicate move to the adult age, these young adults are lost and stuck in static realities where it is not possible to open up to the dimension of desire nor to the transforming encounter with the Other, since they didn’t have the experience of boundaries and lack. These two elements are necessary to acquire the ability to make projects for oneself. During the workshop the following instruments were used: group, psychodrama and art therapy. The group, as a paternal function, ensured the presence of safe boundaries enabling individuals to experiment; psychodrama and art therapy enabled the bodies to experience encounters and transformations, using doing as a metaphor for the movement against the inhibition of doing and as a way to show oneself to the Other and be able to see the Other. 

  15. Boundary detection via dynamic programming

    Science.gov (United States)

    Udupa, Jayaram K.; Samarasekera, Supun; Barrett, William A.

    1992-09-01

    This paper reports a new method for detecting optimal boundaries in multidimensional scene data via dynamic programming (DP). In its current form the algorithm detects 2-D contours on slices and differs from other reported DP-based algorithms in an essential way in that it allows freedom in 2-D for finding optimal contour paths (as opposed to a single degree of freedom in the published methods). The method is being successfully used in segmenting object boundaries in a variety of medical applications including orbital volume from CT images (for craniofacial surgical planning), segmenting bone in MR images for kinematic analysis of the joints of the foot, segmenting the surface of the brain from the inner surface of the cranial vault, segmenting pituitary gland tumor for following the effect of a drug on the tumor, segmenting the boundaries of the heart in MR images, and segmenting the olfactory bulb for verifying hypotheses related to the size of this bulb in certain disease states.

  16. Morality and boundaries in Paul

    Directory of Open Access Journals (Sweden)

    Bert Jan Lietaert Peerbolte

    2012-01-01

    Full Text Available In the Pauline communities, ethics, ethos and identity were closely intertwined. This essay analyses the way in which Paul emphasised the mental boundaries of the Christ communities to turn them into moral boundaries. In this process, the fencing off of these communities over against their past and their present was a fundamental feature of Paul’s reasoning. The communities thus became fenced off from their past, because the Christ event was seen as causing a major change in history. This change affected both Gentile and Jewish believers. At the same time, Paul stressed the boundaries with the outside world: he characterised the inside world as the loyal remnant of Israel, consisting of Jews and Gentiles alike, and pointed out that this group is the group of the elect ‘saints’. The perspective with which Paul looked at ethics and morality inside this group was strongly coloured by the assumed identity of this group as ‘Israel’. Even though the Mosaic Law was no longer the focal point for the identity of this eschatological Israel, the ethical demands Paul mentioned over against the members of this new Israel were highly influenced by the morality of the law. For Paul, sanctification was a fundamental ideal, and this ideal reflected the spirituality of the Holiness Code of Leviticus. This particular ethical model was framed by the awareness that Paul (and Christ before him was ‘sent’ by God, much in the same way the prophets of Israel themselves had been sent.

  17. Galilean-invariant algorithm coupling immersed moving boundary conditions and Lees-Edwards boundary conditions.

    Science.gov (United States)

    Zhou, Guofeng; Wang, Limin; Wang, Xiaowei; Ge, Wei

    2011-12-01

    Many investigators have coupled the Lees-Edwards boundary conditions (LEBCs) and suspension methods in the framework of the lattice Boltzmann method to study the pure bulk properties of particle-fluid suspensions. However, these suspension methods are all link-based and are more or less exposed to the disadvantages of violating Galilean invariance. In this paper, we have coupled LEBCs with a node-based suspension method, which is demonstrated to be Galilean invariant in benchmark simulations. We use the coupled algorithm to predict the viscosity of a particle-fluid suspension at very low Reynolds number, and the simulation results are in good agreement with the semiempirical Krieger-Dougherty formula.

  18. The Good Society: Lessons for Integrated Governance

    Directory of Open Access Journals (Sweden)

    Neesham C.

    2009-12-01

    Full Text Available In this paper I argue that philosophies of the good society can inform theories of integrated governance in two significant ways. Firstly, they can provide a reasonable foundation for legitimating forms of authority to govern a society across the government, corporate and civil sector. Secondly, they promote value systems that can be constitutive of a normative theory of integrated governance. In developing this argument, I explore conceptions of the good society put forward by Marquis de Condorcet, Adam Smith and Karl Marx, and evaluate the modalities in which the social projects proposed by these authors involve issues of integrated governance. For this purpose, I examine the three theories in relation to three questions: (1 What goals (or objectives should social action be directed to? (2 What should be the scope and limits of social responsibility lying behind the social authority of each sector (government, market or civil society? (3 How is social authority to be exercised beyond legislation? What source(s of legitimacy should one appeal to? Although Condorcet’s idea of the natural social order, Smith’s system of natural liberty and Marx’s political economy of human value have all received their fair share of criticism from empirical theories of society, I suggest that these conceptions are still useful to us today as radical normative experiments. These experiments can have guiding value in formulating models of integrated governance. However, the fundamental differences displayed by these three conceptions reveal the importance of determining whether one can develop models of integrated governance that would accommodate plural, incompatible, or unknown conceptions of the good society.

  19. Sage-grouse Conservation Assessment Boundary

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Boundary of the conservation assessment of Greater Sage-grouse and sagebrush habitat conducted by the Western Association of Fish and Wildlife Agencies. The boundary...

  20. Boundary of the State of Iowa

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — This coverage contains polygons representing the Iowa Boundary, it was derived from a coverage of county boundaries, called COUNTIES, of the state of Iowa. COUNTIES...

  1. Cal State Park Boundaries 2011/2012

    Data.gov (United States)

    California Department of Resources — This is a GIS version of California State Park (CSP) operational boundaries and does not represent official property boundary determinations. This GIS version is...

  2. On filter boundary conditions in topology optimization

    DEFF Research Database (Denmark)

    Clausen, Anders; Andreassen, Erik

    2017-01-01

    Most research papers on topology optimization involve filters for regularization. Typically, boundary effects from the filters are ignored. Despite significant drawbacks the inappropriate homogeneous Neumann boundary conditions are used, probably because they are trivial to implement. In this paper...

  3. Automatic computational labeling of glomerular textural boundaries

    Science.gov (United States)

    Ginley, Brandon; Tomaszewski, John E.; Sarder, Pinaki

    2017-03-01

    The glomerulus, a specialized bundle of capillaries, is the blood filtering unit of the kidney. Each human kidney contains about 1 million glomeruli. Structural damages in the glomerular micro-compartments give rise to several renal conditions; most severe of which is proteinuria, where excessive blood proteins flow freely to the urine. The sole way to confirm glomerular structural damage in renal pathology is by examining histopathological or immunofluorescence stained needle biopsies under a light microscope. However, this method is extremely tedious and time consuming, and requires manual scoring on the number and volume of structures. Computational quantification of equivalent features promises to greatly ease this manual burden. The largest obstacle to computational quantification of renal tissue is the ability to recognize complex glomerular textural boundaries automatically. Here we present a computational pipeline to accurately identify glomerular boundaries with high precision and accuracy. The computational pipeline employs an integrated approach composed of Gabor filtering, Gaussian blurring, statistical F-testing, and distance transform, and performs significantly better than standard Gabor based textural segmentation method. Our integrated approach provides mean accuracy/precision of 0.89/0.97 on n = 200Hematoxylin and Eosin (HE) glomerulus images, and mean 0.88/0.94 accuracy/precision on n = 200 Periodic Acid Schiff (PAS) glomerulus images. Respective accuracy/precision of the Gabor filter bank based method is 0.83/0.84 for HE and 0.78/0.8 for PAS. Our method will simplify computational partitioning of glomerular micro-compartments hidden within dense textural boundaries. Automatic quantification of glomeruli will streamline structural analysis in clinic, and can help realize real time diagnoses and interventions.

  4. Canonical group quantization and boundary conditions

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Florian

    2012-07-16

    In the present thesis, we study quantization of classical systems with non-trivial phase spaces using the group-theoretical quantization technique proposed by Isham. Our main goal is a better understanding of global and topological aspects of quantum theory. In practice, the group-theoretical approach enables direct quantization of systems subject to constraints and boundary conditions in a natural and physically transparent manner -- cases for which the canonical quantization method of Dirac fails. First, we provide a clarification of the quantization formalism. In contrast to prior treatments, we introduce a sharp distinction between the two group structures that are involved and explain their physical meaning. The benefit is a consistent and conceptually much clearer construction of the Canonical Group. In particular, we shed light upon the 'pathological' case for which the Canonical Group must be defined via a central Lie algebra extension and emphasise the role of the central extension in general. In addition, we study direct quantization of a particle restricted to a half-line with 'hard wall' boundary condition. Despite the apparent simplicity of this example, we show that a naive quantization attempt based on the cotangent bundle over the half-line as classical phase space leads to an incomplete quantum theory; the reflection which is a characteristic aspect of the 'hard wall' is not reproduced. Instead, we propose a different phase space that realises the necessary boundary condition as a topological feature and demonstrate that quantization yields a suitable quantum theory for the half-line model. The insights gained in the present special case improve our understanding of the relation between classical and quantum theory and illustrate how contact interactions may be incorporated.

  5. Morphological Instability of Grain Boundaries in Two-Phase Coherent Solids

    Science.gov (United States)

    Geslin, Pierre-Antoine; Xu, Yechuan; Karma, Alain

    2015-03-01

    We show both computationally and analytically that grain boundaries that exhibit shear-coupled motion become morphologically unstable in solid alloys that phase separate into coherent domains of distinct chemical compositions. We carry out simulations of continuum models demonstrating that this instability is mediated by long-range elastic interaction between compositional domains and grain boundaries. In addition, we perform a linear stability analysis that predicts the range of unstable wavelengths in good quantitative agreement with simulations. In nonlinear stages, this pattern-forming instability leads to the breakup of low-angle grain boundaries, thereby strongly impacting microstructural evolution in a wide range of phase-separating materials.

  6. Impact of viscous boundary layers on the emission of lee-waves

    Science.gov (United States)

    Renaud, Antoine; Venaille, Antoine; Bouchet, Freddy

    2017-04-01

    Oceans large-scale structures such as jets and vortices can lose their energy into small-scale turbulence. Understanding the physical mechanisms underlying those energy transfers remains a major theoretical challenge. Here we propose an approach that shed new light on the role of bottom topography in this problem. At a linear level, one efficient way of extracting energy and momentum from the mean-flow above topography undulations is the radiation of lee-waves. The generated lee-waves are well described by inviscid theory which gives a prediction for the energy-loss rate at short time [1]. Using a quasi-linear approach we describe the feedback of waves on the mean-flow occurring mostly close to the bottom topography. This can thereafter impact the lee-waves radiation and thus modify the energy-loss rate for the mean-flow. In this work, we consider the Boussinesq equations with periodic boundary conditions in the zonal direction. Taking advantage of this idealized geometry, we apply zonally-symmetric wave-mean interaction theory [2,3]. The novelty of our work is to discuss the crucial role of dissipative effects, such as molecular or turbulent viscosities, together with the importance of the boundary conditions (free-slip vs no-slip). We provide explicite computations in the case of the free evolution of an initially barotropic flow above a sinusoidal topography with free-slip bottom boundary condition. We show how the existence of the boundary layer for the wave-field can enhance the streaming close to the topography. This leads to the emergence of boundary layer for the mean-flow impacting the energy-loss rate through lee-wave emissions. Our results are compared against direct numerical simulations using the MIT general circulation model and are found to be in good agreement. References [1] S.L. Smith, W.R. Young, Conversion of the Barotropic Tide, JPhysOcean 2002 [2] 0. Bühler, Waves and Mean Flows, second edition, Cambridge university press 2014 [3] J

  7. "Good sex" and religion: a feminist overview.

    Science.gov (United States)

    Hunt, Mary E; Jung, Patricia Beattie

    2009-01-01

    This article presents an overview of both the processes and the results of an international, interdisciplinary, and interreligious feminist study of "good sex" that resulted in a volume by the same name. We argue that religion (including its secular equivalent, i.e., global capitalism) remains a powerfully influential cultural force that shapes people's lives, in general, and sanctifies their beliefs, in particular, about what makes for good sex. This review seeks to expand conversations about sex in the bedroom and other private arenas (like the confessional) into more public venues and to demonstrate the connections between power, pleasure, and justice. The need to deconstruct religious traditions so as to critically analyze their structures and components is recognized. Several examples of how feminist scholars and activists are retrieving female-friendly religious insights from both their traditions and more transgressive communities of resistance are provided. This article also points to several ways that religious sexual scripts and norms might be reconstructed. Topics addressed include discussions of how to understand footbinding, the tendency of "forbidden" fruit to prove most erotic, whether sexual entanglements are spiritually dangerous distractions, and ways in which religion can make motherhood "compulsory." We examine both the ways in which equating sexual activity with reproductive activity have obscured the value of women's sexual delight and the risks to many women and children of an unqualified validation of sexual pleasure. Both the ambivalence of religious teachings about sexuality and the difficulties posed by monolithic portrayals of religious traditions are identified.

  8. Implementation of a correction factor for the Pohlhausen laminar boundary layer applied on the CEVA curved wall jet model

    Directory of Open Access Journals (Sweden)

    Valeriu DRAGAN

    2013-09-01

    Full Text Available Curved wall jets have many technical applications, ranging from aeronautical circulation controlled wings to micro-fluidics and cryogenics. This paper addresses the issue of correctly estimating the boundary layer separation for laminar curved wall jets. For this, the Pohlhausen model was used in conjunction with the CEVA wall jet model with a semi-empirical modification which increases the accuracy for very thin jets. The method is therefore a mix of analytical equations with curve fitted experimental data in order to produce a simple yet effective way of estimating the boundary layer velocity profile along the curved wall. In order to cross-check the results, Newman’s empirical equation – which only provides a separation location but no information regarding the velocity profile - for boundary layer separation was used with good results. The hereby model could be used as a pre-design tool for rapid assessment of aeronautical high-lift applications such as Upper Surface Blown (USB or entrainment wings.

  9. Concept analysis of good death in terminally ill patients.

    Science.gov (United States)

    Granda-Cameron, Clara; Houldin, Arlene

    2012-12-01

    The purpose of this concept analysis of good death was to examine the attributes of a good death and explore the changes of the concept over time and its impact on terminally ill patients. The method used for this analysis was the Rodgers' evolutionary method. A literature search was completed using Medline Ovid and Journal Storage (JSTOR).The findings describe the evolution of the good death concept over time from the prehistoric era followed by premodern, modern, and postmodern times. In addition, information is presented about surrogate terms, attributes, antecedents, and consequences associated with good death followed by analysis and discussion of the findings. General attributes of a good death include pain and symptom management, awareness of death, patient's dignity, family presence, family support, and communication among patient, family, and health care providers.

  10. The role of public goods in planetary evolution.

    Science.gov (United States)

    McInerney, James O; Erwin, Douglas H

    2017-12-28

    Biological public goods are broadly shared within an ecosystem and readily available. They appear to be widespread and may have played important roles in the history of life on Earth. Of particular importance to events in the early history of life are the roles of public goods in the merging of genomes, protein domains and even cells. We suggest that public goods facilitated the origin of the eukaryotic cell, a classic major evolutionary transition. The recognition of genomic public goods challenges advocates of a direct graph view of phylogeny, and those who deny that any useful phylogenetic signal persists in modern genomes. Ecological spillovers generate public goods that provide new ecological opportunities.This article is part of the themed issue 'Reconceptualizing the origins of life'. © 2017 The Author(s).

  11. Boundary induced nonlinearities at small Reynolds numbers

    NARCIS (Netherlands)

    Sbragaglia, M.; Sugiyama, K.

    2007-01-01

    We investigate the importance of boundary slip at finite Reynolds numbers for mixed boundary conditions. Nonlinear effects are induced by the non-homogeneity of the boundary condition and change the symmetry properties of the flow with an overall mean flow reduction. To explain the observed drag

  12. Boundary controllability of integrodifferential systems in Banach ...

    Indian Academy of Sciences (India)

    the regularity of optimal boundary controls for parabolic equations with quadratic cost criterion. Recently Han and Park [7] derived a set of sufficient conditions for the boundary controllability of a semilinear system with a nonlocal condition. The purpose of this paper is to study the boundary controllability of nonlinear ...

  13. Boundary crossings and violations in clinical settings.

    Science.gov (United States)

    Aravind, V K; Krishnaram, V D; Thasneem, Z

    2012-01-01

    Principles of beneficence, autonomy, and nonmaleficence, compassion along with fiduciary partnership are the core concepts in the doctor-patient relationship in therapeutic settings. There are varieties of reasons for boundary problems. Physicians ignorance, exploitative character, emotional vulnerability moral weakness and similar factors may pave the way for boundary issues resulting in nonsexual or sexual boundary crossings and violations.

  14. Determination of grain boundary geometry using TEM

    NARCIS (Netherlands)

    Jang, H.; Farkas, D.; Hosson, J.T.M. De

    An experimental method to obtain the grain boundary geometry using the transmission electron microscope is presented. The method allows Σ determination including grain boundary plane orientation. In order to determine the specialness of the grain boundary, three different criteria for maximum

  15. Free-Boundary Resistive Modes in Tokamaks

    NARCIS (Netherlands)

    Huysmans, G. T. A.; Goedbloed, J. P.; Kerner, W.

    1993-01-01

    There exist a number of observations of magnetohydrodynamic (MHD) activity that can be related to resistive MHD modes localized near the plasma boundary. To study the stability of these modes, a free boundary description of the plasma is essential. The resistive plasma-vacuum boundary conditions

  16. Efficient ghost cell reconstruction for embedded boundary methods

    Science.gov (United States)

    Rapaka, Narsimha; Al-Marouf, Mohamad; Samtaney, Ravi

    2016-11-01

    A non-iterative linear reconstruction procedure for Cartesian grid embedded boundary methods is introduced. The method exploits the inherent geometrical advantage of the Cartesian grid and employs batch sorting of the ghost cells to eliminate the need for an iterative solution procedure. This reduces the computational cost of the reconstruction procedure significantly, especially for large scale problems in a parallel environment that have significant communication overhead, e.g., patch based adaptive mesh refinement (AMR) methods. In this approach, prior computation and storage of the weightage coefficients for the neighbour cells is not required which is particularly attractive for moving boundary problems and memory intensive stationary boundary problems. The method utilizes a compact and unique interpolation stencil but also provides second order spatial accuracy. It provides a single step/direct reconstruction for the ghost cells that enforces the boundary conditions on the embedded boundary. The method is extendable to higher order interpolations as well. Examples that demonstrate the advantages of the present approach are presented. Supported by the KAUST Office of Competitive Research Funds under Award No. URF/1/1394-01.

  17. The Mechanisms of Grain Boundaries - Slip Transmission, Migration, and Sliding

    Energy Technology Data Exchange (ETDEWEB)

    Briant, Clyde L.

    2005-03-02

    During the last eight years, we have worked on the general problems associated with grain boundaries in metals with DOE support. This final report summarizes the work that has been performed. At the start of this work, we took a much more atomistic approach to grain boundaries. However, as we performed this research it became clear that such approaches had the drawbacks listed above, and that we were not proceeding toward the more general understanding of grain boundaries that we have hoped to achieve. We then moved toward more macroscopic based experiments that we could use to understand the structure and motion of grain boundaries. From these we were able to begin deducing some of the most important results of this work and to provide information that can be used by others to understand the role of grain boundaries in materials. We thus present this report in a topical way and provide the experimental and theoretical underpinning that is needed at each point as we go forward.

  18. Good Sleep, Good Health, Good Performance. It's Obvious, or Is It ...

    African Journals Online (AJOL)

    In the context of aviation, an ultra-safe industry, the management of sleep loss and fatigue is critical; this can be achieved through the implementation of Fatigue Risk Management Systems (FRMS), which form part of the overall Safety Management System. These systems provide a multi-layered approach to managing ...

  19. Numerical study of radiative heat transfer and effects of thermal boundary conditions on CLC fuel reactor

    Science.gov (United States)

    Ben-Mansour, R.; Li, H.; Habib, M. A.; Hossain, M. M.

    2018-02-01

    Global warming has become a worldwide concern due to its severe impacts and consequences on the climate system and ecosystem. As a promising technology proving good carbon capture ability with low-efficiency penalty, Chemical Looping Combustion technology has risen much interest. However, the radiative heat transfer was hardly studied, nor its effects were clearly declared. The present work provides a mathematical model for radiative heat transfer within fuel reactor of chemical looping combustion systems and conducts a numerical research on the effects of boundary conditions, solid particles reflectivity, particles size, and the operating temperature. The results indicate that radiative heat transfer has very limited impacts on the flow pattern. Meanwhile, the temperature variations in the static bed region (where solid particles are dense) brought by radiation are also insignificant. However, the effects of radiation on temperature profiles within free bed region (where solid particles are very sparse) are obvious, especially when convective-radiative (mixed) boundary condition is applied on fuel reactor walls. Smaller oxygen carrier particle size results in larger absorption & scattering coefficients. The consideration of radiative heat transfer within fuel reactor increases the temperature gradient within free bed region. On the other hand, the conversion performance of fuel is nearly not affected by radiation heat transfer within fuel reactor. However, the consideration of radiative heat transfer enhances the heat transfer between the gas phase and solid phase, especially when the operating temperature is low.

  20. Numerical study of radiative heat transfer and effects of thermal boundary conditions on CLC fuel reactor

    Science.gov (United States)

    Ben-Mansour, R.; Li, H.; Habib, M. A.; Hossain, M. M.

    2017-09-01

    Global warming has become a worldwide concern due to its severe impacts and consequences on the climate system and ecosystem. As a promising technology proving good carbon capture ability with low-efficiency penalty, Chemical Looping Combustion technology has risen much interest. However, the radiative heat transfer was hardly studied, nor its effects were clearly declared. The present work provides a mathematical model for radiative heat transfer within fuel reactor of chemical looping combustion systems and conducts a numerical research on the effects of boundary conditions, solid particles reflectivity, particles size, and the operating temperature. The results indicate that radiative heat transfer has very limited impacts on the flow pattern. Meanwhile, the temperature variations in the static bed region (where solid particles are dense) brought by radiation are also insignificant. However, the effects of radiation on temperature profiles within free bed region (where solid particles are very sparse) are obvious, especially when convective-radiative (mixed) boundary condition is applied on fuel reactor walls. Smaller oxygen carrier particle size results in larger absorption & scattering coefficients. The consideration of radiative heat transfer within fuel reactor increases the temperature gradient within free bed region. On the other hand, the conversion performance of fuel is nearly not affected by radiation heat transfer within fuel reactor. However, the consideration of radiative heat transfer enhances the heat transfer between the gas phase and solid phase, especially when the operating temperature is low.

  1. Heat transfer measurements in swept shock wave/turbulent boundary-layer interactions

    Science.gov (United States)

    Lee, Yeol

    An experimental research program providing basic knowledge and establishing a database on the heat transfer in three-dimensional shock wave/boundary-layer interaction is described. High thermal loading in such interactions constitutes a fundamental problem of critical concern to future supersonic and hypersonic flight vehicles. A turbulent boundary-layer on a flat plate is subjected to interactions with swept planar shock waves generated by a sharp fin. Fin angles from 10 deg to 20 deg at freestream Mach numbers 3.0 and 4.0 produce a variety of interaction strengths from weak to very strong. A foil heater generates a uniform heat flux over the surface of interest and thin-film resistance thermometers mounted on it are used to measure the local surface temperature. The heat convection equation is then used to calculate the local heat transfer coefficients. The present heat transfer technique is applied to measure heat transfer distributions for 5 different interaction cases. The experimental data are compared with numerical Navier-Stokes solutions. The estimation of total uncertainty of the present measurements is about plus or minus 10 percent, which makes them suitable for CFD code validation purposes. The measured peak heat transfer data are correlated with the normal Mach number based on the concept of the quasi-conical nature of such interactions, and the results show good agreement with other experimental data.

  2. Comparison of Measured and Numerically Simulated Turbulence Statistics in a Convective Boundary Layer Over Complex Terrain

    Energy Technology Data Exchange (ETDEWEB)

    Rai, Raj K.; Berg, Larry K.; Kosović, Branko; Mirocha, Jeffrey D.; Pekour, Mikhail S.; Shaw, William J.

    2016-11-25

    High resolution numerical simulation can provide insight into important physical processes that occur within the planetary boundary layer (PBL). The present work employs large eddy simulation (LES) using the Weather Forecasting and Research (WRF) model, with the LES domain nested within mesoscale simulation, to simulate real conditions in the convective PBL over an area of complex terrain. A multiple nesting approach has been used to downsize the grid spacing from 12.15 km (mesoscale) to 0.03 km (LES). A careful selection of grid spacing in the WRF Meso domain has been conducted to minimize artifacts in the WRF-LES solutions. The WRF-LES results have been evaluated with in situ and remote sensing observations collected during the US Department of Energy-supported Columbia BasinWind Energy Study (CBWES). Comparison of the first- and second-order moments, turbulence spectrum, and probability density function (PDF) of wind speed shows good agreement between the simulations and data. Furthermore, the WRF-LES variables show a great deal of variability in space and time caused by the complex topography in the LES domain. The WRF-LES results show that the flow structures, such as roll vortices and convective cells, vary depending on both the location and time of day. In addition to basic studies related to boundary-layer meteorology, results from these simulations can be used in other applications, such as studying wind energy resources, atmospheric dispersion, fire weather etc.

  3. Good journalism or peace journalism?

    Directory of Open Access Journals (Sweden)

    David Loyn

    2007-10-01

    Full Text Available This paper argues against the prescriptive notions of Peace Journalism, and in particular its exclusive nature and attempt to define itself as a new orthodoxy. Most of the paper is a critique of the work of Jake Lynch and Annabel McGoldrick, in a book published in 2005, as well as their earlier Reporting the World series. They condemn all other ways of reporting as 'War Journalism, biased in favour of war.' I argue instead that the opposite of Peace Journalism is good journalism. Much of this Peace Journalism argument is derived from the work of Johan Galtung, who accuses 'war journalists' of reporting war in an enclosed space and time, with no context, concealing peace initiatives and making wars 'opaque/secret.' Galtung specifically calls on journalists as part of their mission to search out peace proposals which might begin as something small and beneath notice, but which might then be picked up and owned by politicians as their own. My response is clear and simple: creating peacemaking politicians is not the business of a reporter. I examine the traditional journalistic methods of using objectivity to get at a version of the truth. I concede that perfect truth is unattainable, (and paradoxically the tool of objectivity we use to get there is slippery too. I conclude that a more quotidian truth, or 'truthfulness' is though a manageable goal. I engage with philosophers who examine objectivity, concluding with the assistance of Thomas Nagel that it does still have a value. Nagel's account also has the merit of explaining how practices such as peace-reporting are bound to be less objective than alternatives, 'since they commit themselves to the adoption of particular perspectives, in effect giving up on the ideal of stripping away as much…as possible.' I examine the responses of the so-called 'journalism of attachment' framed as a desire of journalists faced by the horrors of Bosnia to cast off impartiality and emotional detachment and take

  4. Modeling mixed boundary conditions in a Hilbert space with the complex variable boundary element method (CVBEM).

    Science.gov (United States)

    Johnson, Anthony N; Hromadka, T V

    2015-01-01

    The Laplace equation that results from specifying either the normal or tangential force equilibrium equation in terms of the warping functions or its conjugate can be modeled as a complex variable boundary element method or CVBEM mixed boundary problem. The CVBEM is a well-known numerical technique that can provide solutions to potential value problems in two or more dimensions by the use of an approximation function that is derived from the Cauchy Integral in complex analysis. This paper highlights three customizations to the technique.•A least squares approach to modeling the complex-valued approximation function will be compared and analyzed to determine if modeling error on the boundary can be reduced without the need to find and evaluated additional linearly independent complex functions.•The nodal point locations will be moved outside the problem domain.•Contour and streamline plots representing the warping function and its complementary conjugate are generated simultaneously from the complex-valued approximating function.

  5. Good clinical practices: past, present, and future.

    Science.gov (United States)

    Goodson, R L

    1995-03-01

    Clinical quality assurance has its roots in the evolution of the GCPs. Historically, the fundamental elements of GCPs provided a springboard to develop and refine a paradigm of standard measurements to assure the integrity and quality of research. The research community spontaneously responded by voluntarily establishing quality assurance units and implementing auditing functions to ensure the highest standards in an industry that encompasses science, medicine, and ethics. Although clinical quality assurance is still unregulated in the United States, the performance of good clinical practices has become an integral part of the clinical research process and has impacted the research community on worldwide basis. The establishment of the EC guidelines, the WHO guidelines, and the International Conference on Harmonization are testaments to the increasing emphasis on the future of GCP-related activities.

  6. Dynamic Price Dispersion of Storable Goods

    DEFF Research Database (Denmark)

    Gao, Cixiu

    2014-01-01

    consists of one-time price reductions and several consecutive periods in which all retailers offer the regular price. The model predicts that competition is the hardest when consumer inventories are zero, and that at high inventory levels the probability of holding a sale is low.......In this paper I provide an analytical model for the rationale behind supermarket pricing patterns characterized by long-term high prices and temporary price reductions. The model is based on the understanding that temporary price reductions serve the role of price discrimination between consumers...... with different search costs and willingness to wait. I demonstrate that the high-price-low-price pattern is rational for storable goods. In a Markov-perfect equilibrium, agents’ actions depend on consumer inventory, and purchase decisions are characterized by a critical price. The equilibrium price series...

  7. Bayesian Statistics and Uncertainty Quantification for Safety Boundary Analysis in Complex Systems

    Science.gov (United States)

    He, Yuning; Davies, Misty Dawn

    2014-01-01

    The analysis of a safety-critical system often requires detailed knowledge of safe regions and their highdimensional non-linear boundaries. We present a statistical approach to iteratively detect and characterize the boundaries, which are provided as parameterized shape candidates. Using methods from uncertainty quantification and active learning, we incrementally construct a statistical model from only few simulation runs and obtain statistically sound estimates of the shape parameters for safety boundaries.

  8. Negotiating the boundary between medicine and consumer culture: Online marketing of nutrigenetic tests☆

    Science.gov (United States)

    Saukko, Paula M.; Reed, Matthew; Britten, Nicky; Hogarth, Stuart

    2010-01-01

    Genomics researchers and policy makers have accused nutrigenetic testing companies—which provide DNA-based nutritional advice online—of misleading the public. The UK and USA regulation of the tests has hinged on whether they are classed as “medical” devices, and alternative regulatory categories for “lifestyle” and less-serious genetic tests have been proposed. This article presents the findings of a qualitative thematic analysis of the webpages of nine nutrigenetic testing companies. We argue that the companies, mirroring and negotiating the regulatory debates, were creating a new social space for products between medicine and consumer culture. This space was articulated through three themes: (i) how “genes” and tests were framed, (ii) how the individual was imagined vis a vis health information, and (iii) the advice and treatments offered. The themes mapped onto four frames or models for genetic testing: (i) clinical genetics, (ii) medicine, (iii) intermediate, and (iv) lifestyle. We suggest that the genomics researchers and policy makers appeared to perform what Gieryn (Gieryn, T.F. (1983). Boundary-work and the demarcation of science from non-science: strains and interests in professional ideologies of scientists. American Sociological Review, 48, 781–795.) has termed “boundary work”, i.e., to delegitimize the tests as outside proper medicine and science. Yet, they legitimated them, though in a different way, by defining them as lifestyle, and we contend that the transformation of the boundaries of science into a creation of such hybrid or compromise categories is symptomatic of current historical times. Social scientists studying medicine have referred to the emergence of “lifestyle” products. This article contributes to this literature by examining the historical, regulatory and marketing processes through which certain goods and services become defined this way. PMID:20022680

  9. Negotiating the boundary between medicine and consumer culture: online marketing of nutrigenetic tests.

    Science.gov (United States)

    Saukko, Paula M; Reed, Matthew; Britten, Nicky; Hogarth, Stuart

    2010-03-01

    Genomics researchers and policy makers have accused nutrigenetic testing companies--which provide DNA-based nutritional advice online--of misleading the public. The UK and USA regulation of the tests has hinged on whether they are classed as "medical" devices, and alternative regulatory categories for "lifestyle" and less-serious genetic tests have been proposed. This article presents the findings of a qualitative thematic analysis of the webpages of nine nutrigenetic testing companies. We argue that the companies, mirroring and negotiating the regulatory debates, were creating a new social space for products between medicine and consumer culture. This space was articulated through three themes: (i) how "genes" and tests were framed, (ii) how the individual was imagined vis a vis health information, and (iii) the advice and treatments offered. The themes mapped onto four frames or models for genetic testing: (i) clinical genetics, (ii) medicine, (iii) intermediate, and (iv) lifestyle. We suggest that the genomics researchers and policy makers appeared to perform what Gieryn (Gieryn, T.F. (1983). Boundary-work and the demarcation of science from non-science: strains and interests in professional ideologies of scientists. American Sociological Review, 48, 781-795.) has termed "boundary work", i.e., to delegitimize the tests as outside proper medicine and science. Yet, they legitimated them, though in a different way, by defining them as lifestyle, and we contend that the transformation of the boundaries of science into a creation of such hybrid or compromise categories is symptomatic of current historical times. Social scientists studying medicine have referred to the emergence of "lifestyle" products. This article contributes to this literature by examining the historical, regulatory and marketing processes through which certain goods and services become defined this way. 2009 Elsevier Ltd. All rights reserved.

  10. Good Health Before Pregnancy: Preconception Care

    Science.gov (United States)

    ... Management Education & Events Advocacy For Patients About ACOG Good Health Before Pregnancy: Preconception Care Home For Patients Search ... Pregnancy: Preconception Care FAQ056, April 2017 PDF Format Good Health Before Pregnancy: Preconception Care Pregnancy What is a ...

  11. Benzocaine and Babies: Not a Good Mix

    Science.gov (United States)

    ... Consumers Consumer Updates Benzocaine and Babies: Not a Good Mix Share Tweet Linkedin Pin it More sharing ... children are more at risk, it’s still a good idea to talk to your health care professional ...

  12. 76 FR 52662 - Good Neighbor Environmental Board

    Science.gov (United States)

    2011-08-23

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY Good Neighbor Environmental Board AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of... meeting of the Good Neighbor Environmental Board (Board). The Board usually meets three times each...

  13. 76 FR 76973 - Good Neighbor Environmental Board

    Science.gov (United States)

    2011-12-09

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY Good Neighbor Environmental Board AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of... meeting of the Good Neighbor Environmental Board (Board). The Board usually meets three times each...

  14. 76 FR 7845 - Good Neighbor Environmental Board

    Science.gov (United States)

    2011-02-11

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY Good Neighbor Environmental Board AGENCY: Environmental Protection Agency (EPA). ACTION: Request for Nominations to the Good Neighbor Environmental Board. SUMMARY: The U.S. Environmental Protection...

  15. 76 FR 12731 - Good Neighbor Environmental Board

    Science.gov (United States)

    2011-03-08

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY Good Neighbor Environmental Board AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of... meeting of the Good Neighbor Environmental Board (Board). The Board usually meets three times each...

  16. 76 FR 31328 - Good Neighbor Environmental Board

    Science.gov (United States)

    2011-05-31

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY Good Neighbor Environmental Board AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of... meeting of the Good Neighbor Environmental Board (Board). The Board usually meets three times each...

  17. 77 FR 32636 - Good Neighbor Environmental Board

    Science.gov (United States)

    2012-06-01

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY Good Neighbor Environmental Board AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of... meeting of the Good Neighbor Environmental Board (Board). The Board usually meets three times each...

  18. Turbulent boundary layer under the control of different schemes

    Science.gov (United States)

    Qiao, Z. X.; Zhou, Y.; Wu, Z.

    2017-06-01

    This work explores experimentally the control of a turbulent boundary layer over a flat plate based on wall perturbation generated by piezo-ceramic actuators. Different schemes are investigated, including the feed-forward, the feedback, and the combined feed-forward and feedback strategies, with a view to suppressing the near-wall high-speed events and hence reducing skin friction drag. While the strategies may achieve a local maximum drag reduction slightly less than their counterpart of the open-loop control, the corresponding duty cycles are substantially reduced when compared with that of the open-loop control. The results suggest a good potential to cut down the input energy under these control strategies. The fluctuating velocity, spectra, Taylor microscale and mean energy dissipation are measured across the boundary layer with and without control and, based on the measurements, the flow mechanism behind the control is proposed.

  19. Dynamic expression of a Hydra FGF at boundaries and termini.

    Science.gov (United States)

    Lange, Ellen; Bertrand, Stephanie; Holz, Oliver; Rebscher, Nicole; Hassel, Monika

    2014-12-01

    Guidance of cells and tissue sheets is an essential function in developing and differentiating animal tissues. In Hydra, where cells and tissue move dynamically due to constant cell proliferation towards the termini or into lateral, vegetative buds, factors essential for guidance are still unknown. Good candidates to take over this function are fibroblast growth factors (FGFs). We present the phylogeny of several Hydra FGFs and analysis of their expression patterns. One of the FGFs is expressed in all terminal regions targeted by tissue movement and at boundaries crossed by moving tissue and cells with an expression pattern slightly differing in two Hydra strains. A model addressing an involvement of this FGF in cell movement and morphogenesis is proposed: Hydra FGFf-expressing cells might serve as sources to attract tissue and cells towards the termini of the body column and across morphological boundaries. Moreover, a function in morphogenesis and/or differentiation of cells and tissue is suggested.

  20. Grain boundaries and mechanical properties of nanocrystalline diamond films.

    Energy Technology Data Exchange (ETDEWEB)

    Busmann, H.-G.; Pageler, A.; Gruen, D. M.

    1999-08-06

    Phase-pure nanocrystalline diamond thin films grown from plasmas of a hydrogen-poor carbon argon gas mixture have been analyzed regarding their hardness and elastic moduli by means of a microindentor and a scanning acoustic microscope.The films are superhard and the moduli rival single crystal diamond. In addition, Raman spectroscopy with an excitation wavelength of 1064 nm shows a peak at 1438 l/cm and no peak above 1500 l/cm, and X-ray photoelectron spectroscopy a shake-up loss at 4.2 eV. This gives strong evidence for the existence of solitary double bonds in the films. The hardness and elasticity of the films then are explained by the assumption, that the solitary double bonds interconnect the nanocrystals in the films, leading to an intergrain boundary adhesion of similar strength as the intragrain diamond cohesion. The results are in good agreement with recent simulations of high-energy grain boundaries.