WorldWideScience

Sample records for previously developed theoretical

  1. Conceptual aspects: analyses law, ethical, human, technical, social factors of development ICT, e-learning and intercultural development in different countries setting out the previous new theoretical model and preliminary findings

    NARCIS (Netherlands)

    Kommers, Petrus A.M.; Smyrnova-Trybulska, Eugenia; Morze, Natalia; Issa, Tomayess; Issa, Theodora

    2015-01-01

    This paper, prepared by an international team of authors focuses on the conceptual aspects: analyses law, ethical, human, technical, social factors of ICT development, e-learning and intercultural development in different countries, setting out the previous and new theoretical model and preliminary

  2. Theoretical developments in SUSY

    Energy Technology Data Exchange (ETDEWEB)

    Shifman, M. [University of Minnesota, William I. Fine Theoretical Physics Institute, Minneapolis, MN (United States)

    2009-01-15

    I am proud that I was personally acquainted with Julius Wess. We first met in 1999 when I was working on the Yuri Golfand Memorial Volume (The Many Faces of the Superworld, World Scientific, Singapore, 2000). I invited him to contribute, and he accepted this invitation with enthusiasm. After that, we met many times, mostly at various conferences in Germany and elsewhere. I was lucky to discuss with Julius questions of theoretical physics, and hear his recollections on how supersymmetry was born. In physics Julius was a visionary, who paved the way to generations of followers. In everyday life he was a kind and modest person, always ready to extend a helping hand to people who were in need of his help. I remember him telling me how concerned he was about the fate of theoretical physicists in Eastern Europe after the demise of communism. His ties with Israeli physicists bore a special character. I am honored by the opportunity to contribute an article to the Julius Wess Memorial Volume. I review theoretical developments of the recent years in non-perturbative supersymmetry. (orig.)

  3. Theoretical Developments in SUSY

    Science.gov (United States)

    Shifman, M.

    2009-01-01

    I am proud that I was personally acquainted with Julius Wess. We first met in 1999 when I was working on the Yuri Golfand Memorial Volume (The Many Faces of the Superworld, World Scientific, Singapore, 2000). I invited him to contribute, and he accepted this invitation with enthusiasm. After that, we met many times, mostly at various conferences in Germany and elsewhere. I was lucky to discuss with Julius questions of theoretical physics, and hear his recollections on how supersymmetry was born. In physics Julius was a visionary, who paved the way to generations of followers. In everyday life he was a kind and modest person, always ready to extend a helping hand to people who were in need of his help. I remember him telling me how concerned he was about the fate of theoretical physicists in Eastern Europe after the demise of communism. His ties with Israeli physicists bore a special character. I am honored by the opportunity to contribute an article to the Julius Wess Memorial Volume. I will review theoretical developments of the recent years in non-perturbative supersymmetry.

  4. Theoretical Perspectives on Gender and Development | IDRC ...

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

    Theoretical Perspectives on Gender and Development demystifies the theory of gender and development and shows how it plays an important role in everyday life. It explores the evolution of gender and development theory, introduces competing theoretical frameworks, and examines new and emerging debates. The focus ...

  5. Attachment: Theoretical Development and Critique

    Science.gov (United States)

    Slater, Ruth

    2007-01-01

    Zeanah argues that ethological attachment theory, as outlined by John Bowlby, has provided one of the most important frameworks for understanding crucial risk and protective factors in social and emotional development. However, although attachment theory and the notion of attachment disorders have influenced such initiatives, many psychologists,…

  6. Theoretical Developments in the Psychology of Aging.

    Science.gov (United States)

    Schroots, Johannes J. F.

    1996-01-01

    Presents an overview of the most distinctive psychological theories of aging promulgated after World War II. Groups theoretical developments into three periods: (1) Classical Period, which includes developmental tasks/activity theory; (2) Modern Period, which includes theories on life-span development and aging; and (3) New Period, represented by…

  7. Theoretical Analysis of Canadian Lifelong Education Development

    Science.gov (United States)

    Mukan, Natalia; Barabash, Olena; Busko, Maria

    2014-01-01

    In the article, the problem of Canadian lifelong education development has been studied. The main objectives of the article are defined as theoretical analysis of scientific and pedagogical literature which highlights different aspects of the research problem; periods of lifelong education development; and determination of lifelong learning role…

  8. Developing a theoretical evaluative framework for information ...

    African Journals Online (AJOL)

    The importance of information literacy as a fundamental element in the process of social and economic development and lifelong learning in the 21st century has been widely acknowledged. Most information literacy programmes, however, lack a robust theoretical framework on which the intervention is based. The reported ...

  9. Theoretical Considerations in Developing Amorphous Solid Dispersions

    DEFF Research Database (Denmark)

    Laitinen, Riikka; Priemel, Petra Alexandra; Surwase, Sachin

    2014-01-01

    to their glass-forming ability and glass stability. In the main parts of this chapter, we review theoretical approaches to determine amorphous drug polymer miscibility and crystalline drug polymer solubility, as a prerequisite to develop amorphous solid dispersions (glass solutions).......Before pursuing the laborious route of amorphous solid dispersion formulation and development, which is the topic of many of the subsequent chapters in this book, the formulation scientist would benefit from a priori knowledge whether the amorphous route is a viable one for a given drug and how...... much solubility improvement, and hence increase in bioavailability, can be expected, and what forms of solid dispersion have been developed in the past. In this chapter, we therefore initially define the various forms of solid dispersions, and then go on to discuss properties of pure drugs with respect...

  10. Determination of cognitive development: postnonclassical theoretical model

    Directory of Open Access Journals (Sweden)

    Irina N. Pogozhina

    2015-09-01

    Full Text Available The aim of this research is to develop a postnonclassical cognitive processes content determination model in which mental processes are considered as open selfdeveloping, self-organizing systems. Three types of systems (dynamic, statistical, developing were analysed and compared on the basis of the description of the external and internal characteristics of causation, types of causal chains (dependent, independent and their interactions, as well as the nature of the relationship between the elements of the system (hard, probabilistic, mixed. Mechanisms of open non-equilibrium nonlinear systems (dissipative and four dissipative structures emergence conditions are described. Determination models of mental and behaviour formation and development that were developed under various theoretical approaches (associationism, behaviorism, gestaltism, psychology of intelligence by Piaget, Vygotsky culture historical approach, activity approach and others are mapped on each other as the models that describe behaviour of the three system types mentioned above. The development models of the mental sphere are shown to be different by the following criteria: 1 allocated determinants amount; 2 presence or absence of the system own activity that results in selecting the model not only external, but also internal determinants; 3 types of causal chains (dependent-independent-blended; 4 types of relationships between the causal chain that ultimately determines the subsequent system determination type as decisive (a tough dynamic pattern or stochastic (statistical regularity. The continuity of postnonclassical, classical and non-classical models of mental development determination are described. The process of gradual refinement, complexity, «absorption» of the mental determination by the latter models is characterized. The human mental can be deemed as the functioning of the open developing non-equilibrium nonlinear system (dissipative. The mental sphere is

  11. Developing a theoretical framework for complex community-based interventions.

    Science.gov (United States)

    Angeles, Ricardo N; Dolovich, Lisa; Kaczorowski, Janusz; Thabane, Lehana

    2014-01-01

    Applying existing theories to research, in the form of a theoretical framework, is necessary to advance knowledge from what is already known toward the next steps to be taken. This article proposes a guide on how to develop a theoretical framework for complex community-based interventions using the Cardiovascular Health Awareness Program as an example. Developing a theoretical framework starts with identifying the intervention's essential elements. Subsequent steps include the following: (a) identifying and defining the different variables (independent, dependent, mediating/intervening, moderating, and control); (b) postulating mechanisms how the independent variables will lead to the dependent variables; (c) identifying existing theoretical models supporting the theoretical framework under development; (d) scripting the theoretical framework into a figure or sets of statements as a series of hypotheses, if/then logic statements, or a visual model; (e) content and face validation of the theoretical framework; and (f) revising the theoretical framework. In our example, we combined the "diffusion of innovation theory" and the "health belief model" to develop our framework. Using the Cardiovascular Health Awareness Program as the model, we demonstrated a stepwise process of developing a theoretical framework. The challenges encountered are described, and an overview of the strategies employed to overcome these challenges is presented.

  12. Franchise Business Development Model: Theoretical Considerations

    OpenAIRE

    Kavaliauskė, Monika; Vaiginienė, Erika

    2011-01-01

    Franchising is not a popular business development form in Lithuania. Only 0.02% of all Lithuanian companies use franchising for business development, while in most of the developed countries franchise is recognized as a convenient business expansion form. So, what factors determine such differences in the use of franchising? Analysis of related literature showed, that mainly researchers analyse some aspects of franchising, however there is no systematized analysis which covers all the main fr...

  13. Formation of modern theoretical regulations about organization concerning management development

    Directory of Open Access Journals (Sweden)

    Zhalinska I.V.

    2017-03-01

    success; modern theoretical development offers a wide range of business concepts that don’t make a single system; traditional business concepts undergo considerable transformation; the modern science of management doesn’t offer a unified approach for learning and explanation of organizational processes. The results of the current study allow to come to the conclusion about the necessity to learn organizational processes as the entity of organization theory. The current research direction can be considered as the next stage in the development of the science of management after the potential of the previous stages is over. Organizations are becoming significant independent entities in outdoor environment but not one of the factors of economic efficiency.

  14. Theoretical development in the context of nursing

    DEFF Research Database (Denmark)

    Hoeck, Bente; Delmar, Charlotte

    2018-01-01

    This article is about nursing theories, the development of nursing knowledge and the underlying, hidden epistemology. The current technical-economical rationality in society and health care calls for a specific kind of knowledge based on a traditional Western, Socratic view of science. This has...... an immense influence on the development of nursing knowledge. The purpose of the article was therefore to discuss the hidden epistemology of nursing knowledge and theories seen in a broad historical context and point to an alternative epistemology for a future context. It is a question about which nursing...... theories and what nursing knowledge should be developed in order to benefit patients and relatives of the future. We suggest that future knowledge development in nursing be developed in an interchange between theory and practice and guided by philosophy like a kind of pendulum where all three elements...

  15. Theoretical Perspectives on Gender and Development

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

    Development requires good governments that give men and women equal voices in decision-making and policy implementation. .... When applied in research, policy, and action, such theories and knowledge not only ignore women's contributions in all spheres of activity but also exclude consideration of issues particularly ...

  16. Geomathematics theoretical foundations, applications and future developments

    CERN Document Server

    Agterberg, Frits

    2014-01-01

    This book provides a wealth of geomathematical case history studies performed by the author during his career at the Ministry of Natural Resources Canada, Geological Survey of Canada (NRCan-GSC). Several of the techniques newly developed by the author and colleagues that are described in this book have become widely adopted, not only for further research by geomathematical colleagues, but by government organizations and industry worldwide. These include Weights-of-Evidence modelling, mineral resource estimation technology, trend surface analysis, automatic stratigraphic correlation and nonlinear geochemical exploration methods. The author has developed maximum likelihood methodology and spline-fitting techniques for the construction of the international numerical geologic timescale. He has introduced the application of new theory of fractals and multifractals in the geostatistical evaluation of regional mineral resources and ore reserves and to study the spatial distribution of metals in rocks. The book also ...

  17. Theoretical Perspectives on Gender and Development | CRDI ...

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

    Elle a dirigé avec Marianne Marchand la publication d'une collection intitulée Feminism/Postmodernism/Development et elle effectue des recherches et enseigne sur les questions d'égalité entre les sexes et la théorie du développement, ainsi que sur la grande question de l'égalité entre les sexes dans la création d'une ...

  18. Theoretical Guidelines for a Psychology of Rural Development

    OpenAIRE

    Landini, F.; Long, N.; Leeuwis, C.; Murtagh, S.

    2014-01-01

    Many processes related to rural development have a strong psychosocial component. Yet, there exists no specific psychosocial theoretical framework for addressing them. In this paper, then, we present a set of theoretical guidelines for analysing rural development processes and interventions from the perspective of psychology. In doing so, we draw upon an Actor-Oriented Approach and address concepts commonly used in rural development studies, such as human agency, social interfaces, worldviews...

  19. THEORETICAL ASPECTS OF INFORMATIONAL SERVICES REGIONAL MARKET EFFECTIVE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    I.N. Korabejnikov

    2008-12-01

    Full Text Available The peculiarities and priorities of the informational services regional market formation as a part of network model of the economic development are described in this article. The authors present the classification of the factors which have an influence on the effectiveness of the informational services regional market development. Theoretical aspects of the informational services regional market effective development are shown.

  20. Development of a Theoretical Decoupled Stirling Cycle Engine

    OpenAIRE

    Cullen, Barry; McGovern, Jim

    2009-01-01

    The Stirling cycle engine is gaining increasing attention in the current energy market as a clean, quiet and versatile prime mover for use in such situations as solar thermal generation, micro cogeneration and other micro distributed generation situations. A theoretical Stirling cycle engine model is developed. Using a theoretical decoupled engine configuration in which working space swept volume, volume variation, phase angle and dead space ratio are controlled via a black-box electronic con...

  1. Theoretical aspect of the development of 'corporate social responsibility' concept

    OpenAIRE

    Milanović, Vesna M.; Bučalina, Andrea D.

    2013-01-01

    This paper presents a theoretical aspect of the development of 'corporate social responsibility' concept from the beginning of the 20th century to the present day, with the focus on the following periods: up to 1950, between 1950 an 1970, from 1970 to 1990 and from 1990 to now. We employed historical approach. We had an insight into the results of theoretical research on 'corporate social responsibility' concept, which were mostly presented in scientific papers in the English language. The ab...

  2. Predictive factors for the development of diabetes in women with previous gestational diabetes mellitus

    DEFF Research Database (Denmark)

    Damm, P.; Kühl, C.; Bertelsen, Aksel

    1992-01-01

    OBJECTIVES: The purpose of this study was to determine the incidence of diabetes in women with previous dietary-treated gestational diabetes mellitus and to identify predictive factors for development of diabetes. STUDY DESIGN: Two to 11 years post partum, glucose tolerance was investigated in 241...... women with previous dietary-treated gestational diabetes mellitus and 57 women without previous gestational diabetes mellitus (control group). RESULTS: Diabetes developed in 42 (17.4%) women with previous gestational diabetes mellitus (3.7% insulin-dependent diabetes mellitus and 13.7% non......-insulin-dependent diabetes mellitus). Diabetes did not develop in any of the controls. Predictive factors for diabetes development were fasting glucose level at diagnosis (high glucose, high risk), preterm delivery, and an oral glucose tolerance test result that showed diabetes 2 months post partum. In a subgroup...

  3. Corruption and Economic Development in Nigeria: A Theoretical ...

    African Journals Online (AJOL)

    Corruption has had severe negative consequences on the economic growth and development of Nigeria. This paper presents a review of corruption as it relates to the economic development of Nigeria. By using a theoretical method of analysis, the study reveals that corruption has been a deterrent to economic ...

  4. Resilience or Flexibility– A Theoretical Approach on Romanian Development Regions

    Directory of Open Access Journals (Sweden)

    Roxana Voicu – Dorobanțu

    2015-09-01

    Full Text Available The paper describes a theoretical contextualization of flexibility, sustainability, durability and resilience, in the context of the sustainable development goals. The main purpose is to identify the theoretical handles that may be used in the creation of a flexibility indicator. Thus, research questions related to the theoretical differentiation between durable and sustainable, flexible and resilient are answered. Further on, the paper describes the situation of the Romanian regions in terms of development indicators, based on Eurostat data, as a premise for further research on the possibility of their leapfrogging. This work was financially supported through the project “Routes of academic excellence in doctoral and post-doctoral research- REACH” co-financed through the European Social Fund, by Sectoral Operational Programme Human Resources Development 2007-2013, contract no POSDRU/59/1.5/S/137926.

  5. Export fluctuations and economic development: A theoretical and ...

    African Journals Online (AJOL)

    Export fluctuations and economic development: A theoretical and empirical analysis. MO Nyong, CD Ekpenyong. Abstract. No Abstract. Global Journal of Social Sciences Vol. 5 (2) 2006: pp. 97-109. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT.

  6. The development of a theoretical model to investigate factors

    African Journals Online (AJOL)

    user

    ISSN 0378-5254 Journal of Family Ecology and Consumer Sciences, Vol 41, 2013. The development of a theoretical model to investigate factors associated with environmentally significant choice behaviour in the South ..... attitudes toward the behaviour, social pressure or subjective norms surrounding the behaviour.

  7. Higgs physics at future colliders: Recent theoretical developments

    Indian Academy of Sciences (India)

    journal of. February 2004 physics pp. 191-206. Higgs physics at future colliders: Recent theoretical developments. ABDELHAK DJOUADI. Theory Division, CERN ... the Higgs particles, not only the dominant and widely studied ones allowing for clear .... For very large masses, the Higgs becomes obese, since ΓА ~ MА,.

  8. 78 FR 35263 - Freeport LNG Development, L.P.; Application for Blanket Authorization To Export Previously...

    Science.gov (United States)

    2013-06-12

    ... the LNG at the time of export. The Application was filed under section 3 of the Natural Gas Act (NGA... not prohibited by U.S. law or policy. Current Application The current Application is filed in... Freeport LNG Development, L.P.; Application for Blanket Authorization To Export Previously Imported...

  9. Developing Reading Comprehension through Metacognitive Strategies: A Review of Previous Studies

    Science.gov (United States)

    Channa, Mansoor Ahmed; Nordin, Zaimuariffudin Shukri; Siming, Insaf Ali; Chandio, Ali Asgher; Koondher, Mansoor Ali

    2015-01-01

    This paper has reviewed the previous studies on metacognitive strategies based on planning, monitoring, and evaluating in order to develop reading comprehension. The main purpose of this review in metacognition, and reading domain is to help readers to enhance their capabilities and power reading through these strategies. The researchers reviewed…

  10. Economic Growth of a Rapidly Developing Economy: Theoretical Formulation

    Directory of Open Access Journals (Sweden)

    Oleg Sergeyevich Sukharev

    2016-06-01

    Full Text Available The subject matter of the article is the description of economic growth. Modern economy is characterized by a high rate of changes. These changes are the limiting parameters of modern development, which requires a modification of the basic models of growth, the substantiation of the expediency and necessity of a rapid development strategy. In a simple mathematical form, the statement of the problem of economic growth in the “green economy” is examined, in which the costs of environmental measures are not considered a priori as hampering economic development (as it is common for a number of modern neoclassical and neo-Keynesian growth models. The methodological basis of the article are the econometric approach and modelling method. The article has a theoretical character. The main hypothesis supposes that the rapid development strategy cannot make an adequate development strategy under certain conditions, but may be acceptable in other its specific conditions. In this sense, the important growth conditions are the availability of resources, the effectiveness of institutions and the current economic structure, the technological effectiveness of economy, as well as the conditions of technological development (“green economy” and the path of such development. In the article, on the theoretical level of analysis, the substantiation of the adequacy of the rapid development strategy for an economic system is given, whose goal is to achieve the standard of living of the countryleader. Based on the assumptions introduced, the period for which the rapid development strategy might be implemented and the economic lag of the country might be reduced from the country-leader is determined. The conditions that ensure the impact of innovations on the rate of economic development are summarized. The introduced range of dependencies and relations can be useful for the elaboration of the theory of innovation development and for the formation of a new

  11. A constructivist theoretical proposition of cultural competence development in nursing.

    Science.gov (United States)

    Blanchet Garneau, Amélie; Pepin, Jacinthe

    2015-11-01

    Cultural competence development in healthcare professions is considered an essential condition to promote quality and equity in healthcare. Even if cultural competence has been recognized as continuous, evolutionary, dynamic, and developmental by most researchers, current models of cultural competence fail to present developmental levels of this competence. These models have also been criticized for their essentialist perspective of culture and their limited application to competency-based approach programs. To our knowledge, there have been no published studies, from a constructivist perspective, of the processes involved in the development of cultural competence among nurses and undergraduate student nurses. The purpose of this study was to develop a theoretical proposition of cultural competence development in nursing from a constructivist perspective. We used a grounded theory design to study cultural competence development among nurses and student nurses in a healthcare center located in a culturally diverse urban area. Data collection involved participant observation and semi-structured interviews with 24 participants (13 nurses and 11 students) working in three community health settings. The core category, 'learning to bring the different realities together to provide effective care in a culturally diverse context', was constructed using inductive qualitative data analysis. This core category encompasses three dimensions of cultural competence: 'building a relationship with the other', 'working outside the usual practice framework', and 'reinventing practice in action.' The resulting model describes the concurrent evolution of these three dimensions at three different levels of cultural competence development. This study reveals that clinical experience and interactions between students or nurses and their environment both contribute significantly to cultural competence development. The resulting theoretical proposition of cultural competence development

  12. Theoretical and methodological foundations of sustainable development of Geosystems

    Science.gov (United States)

    Mandryk, O. M.; Arkhypova, L. M.; Pukish, A. V.; Zelmanovych, A.; Yakovlyuk, Kh

    2017-05-01

    The theoretical and methodological foundations of sustainable development of Geosystems were further evolved. It was grounded the new scientific direction “constructive Hydroecology” - the science that studies the Hydrosphere from the standpoint of natural and technogenic safety based on geosystematical approach. A structural separation for constructive Hydroecology based on objective, subjective, and application characteristics was set. The main object of study of the new scientific field is the hydroecological environment under which the part of Hydrosphere should be understood as a part of the multicomponent dynamic system that is influenced by engineering and economical human activities and, in turn, determines to some extent this activity.

  13. Recent Theoretical Developments in CP Violation in the B System

    CERN Document Server

    Fleischer, Robert

    2000-01-01

    After a brief review of the present status of the standard methods to extract CKM phases from CP-violating effects in non-leptonic B-decays, an overview of recent theoretical developments in this field is given, including extractions of $\\gamma$ from $B\\to\\pi K$ and $B_{s(d)}\\to J/\\psi K_S$ decays, a simultaneous determination of $\\beta$ and $\\gamma$, which is provided by the modes $B_d\\to \\pi^+ \\pi^-$ and $B_s\\to K^+ K^-$, and extractions of CKM phases from angular distributions of certain $B_{d,s}$ decays, such as $B_d\\to J/\\psi

  14. An Emerging Theoretical Model of Music Therapy Student Development.

    Science.gov (United States)

    Dvorak, Abbey L; Hernandez-Ruiz, Eugenia; Jang, Sekyung; Kim, Borin; Joseph, Megan; Wells, Kori E

    2017-07-01

    Music therapy students negotiate a complex relationship with music and its use in clinical work throughout their education and training. This distinct, pervasive, and evolving relationship suggests a developmental process unique to music therapy. The purpose of this grounded theory study was to create a theoretical model of music therapy students' developmental process, beginning with a study within one large Midwestern university. Participants (N = 15) were music therapy students who completed one 60-minute intensive interview, followed by a 20-minute member check meeting. Recorded interviews were transcribed, analyzed, and coded using open and axial coding. The theoretical model that emerged was a six-step sequential developmental progression that included the following themes: (a) Personal Connection, (b) Turning Point, (c) Adjusting Relationship with Music, (d) Growth and Development, (e) Evolution, and (f) Empowerment. The first three steps are linear; development continues in a cyclical process among the last three steps. As the cycle continues, music therapy students continue to grow and develop their skills, leading to increased empowerment, and more specifically, increased self-efficacy and competence. Further exploration of the model is needed to inform educators' and other key stakeholders' understanding of student needs and concerns as they progress through music therapy degree programs. © the American Music Therapy Association 2017. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

  15. Theoretical Insights for Developing the Concept of Social Technologies

    Directory of Open Access Journals (Sweden)

    Monika Skaržauskaitė

    2012-12-01

    Full Text Available Purpose—Social technologies continue to grow in popularity in society. Even though the term “social technology” is most commonly used to refer to new social media such as Twitter and Facebook, a redefinition of this concept based on the original definition is needed. Nowadays the concept of “social technology” has several aspects, which destabilize the dominant image of technology. It emphasizes the social sciences and the humanities as shapers of society, reconsiders the strength of “soft technologies.” The aim of this paper is to provide rich insight into the concept of social technologies’ and to develop the meaning of social technologies in information and knowledge society by analysing new needs and application forms of social technologies.Findings—the research contributed to the understanding of the concept of social technologies. Based on the analysis and synthesis of the scientific literature, a theoretical framework for defining social technologies was developed.Research limitations/implications—the research is limited in a few aspects. For a deeper understanding of social technologies and for developing technological perspectives in social sciences a broader theoretical, as well as empirical, research is necessary. In order to generalise the research findings, further research should include different dimensions from the perspective of other sciences.

  16. Theoretical Insights for Developing the Concept of Social Technologies

    Directory of Open Access Journals (Sweden)

    Rūta Tamošiūnaitė

    2013-02-01

    Full Text Available Purpose—Social technologies continue to grow in popularity in society. Even though the term “social technology” is most commonly used to refer to new social media such as Twitter and Facebook, a redefinition of this concept based on the original definition is needed. Nowadays the concept of “social technology” has several aspects, which destabilize the dominant image of technology. It emphasizes the social sciences and the humanities as shapers of society, reconsiders the strength of “soft technologies.” The aim of this paper is to provide rich insight into the concept of social technologies’ and to develop the meaning of social technologies in information and knowledge society by analysing new needs and application forms of social technologies. Findings—the research contributed to the understanding of the concept of social technologies. Based on the analysis and synthesis of the scientific literature, a theoretical framework for defining social technologies was developed. Research limitations/implications—the research is limited in a few aspects. For a deeper understanding of social technologies and for developing technological perspectives in social sciences a broader theoretical, as well as empirical, research is necessary. In order to generalise the research findings, further research should include different dimensions from the perspective of other sciences. Article Type: conceptual paper.

  17. Mentoring to develop research selfefficacy, with particular reference to previously disadvantaged individuals

    OpenAIRE

    S. Schulze

    2010-01-01

    The development of inexperienced researchers is crucial. In response to the lack of research self-efficacy of many previously disadvantaged individuals, the article examines how mentoring can enhance the research self-efficacy of mentees. The study is grounded in the self-efficacy theory (SET) – an aspect of the social cognitive theory (SCT). Insights were gained from an in-depth study of SCT, SET and mentoring, and from a completed mentoring project. This led to the formulation of three basi...

  18. On the Hilbert-Huang Transform Theoretical Developments

    Science.gov (United States)

    Kizhner, Semion; Blank, Karin; Flatley, Thomas; Huang, Norden E.; Patrick, David; Hestnes, Phyllis

    2005-01-01

    One of the main heritage tools used in scientific and engineering data spectrum analysis is the Fourier Integral Transform and its high performance digital equivalent - the Fast Fourier Transform (FFT). Both carry strong a-priori assumptions about the source data, such as linearity, of being stationary, and of satisfying the Dirichlet conditions. A recent development at the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC), known as the Hilbert-Huang Transform (HHT), proposes a novel approach to the solution for the nonlinear class of spectrum analysis problems. Using a-posteriori data processing based on the Empirical Mode Decomposition (EMD) sifting process (algorithm), followed by the normalized Hilbert Transform of the decomposition data, the HHT allows spectrum analysis of nonlinear and nonstationary data. The EMD sifting process results in a non-constrained decomposition of a source real value data vector into a finite set of Intrinsic Mode Functions (IMF). These functions form a near orthogonal adaptive basis, a basis that is derived from the data. The IMFs can be further analyzed for spectrum interpretation by the classical Hilbert Transform. A new engineering spectrum analysis tool using HHT has been developed at NASA GSFC, the HHT Data Processing System (HHT-DPS). As the HHT-DPS has been successfully used and commercialized, new applications post additional questions about the theoretical basis behind the HHT and EMD algorithms. Why is the fastest changing component of a composite signal being sifted out first in the EMD sifting process? Why does the EMD sifting process seemingly converge and why does it converge rapidly? Does an IMF have a distinctive structure? Why are the IMFs near orthogonal? We address these questions and develop the initial theoretical background for the HHT. This will contribute to the developments of new HHT processing options, such as real-time and 2-D processing using Field Programmable

  19. The Function of Religiosity in Personal Development: Some Theoretical Remarks

    Directory of Open Access Journals (Sweden)

    Tatjana Folieva

    2014-12-01

    Full Text Available Dwelling on a number of theoretical considerations bearing on the problem of the function of religiosity in personal development, the author specifi es the disciplines related to the study of the problem and formulates working defi nitions of the concepts of development, religiosity and norm. The situation in Russian science today gives priority to psychology of development and religion studies, as the former possesses a serious methodological and methodical basis while the latter, disposing of a unique mass of empiric material, provides broader context for studying religiosity and secures the link between its psychological study and its historical, sociological, henomenological etc. analysis. This approach will also be productive for theology, since psychology can occupy a special place within the system of ecclesiastical sciences as an applied discipline; however, its confessional” character should then fi nd expression not in the search for a religious basis, but in the study of phenomena belonging to the religious milieu. It is also suggested that religiosity should be considered as a ynamic, non-linear process which can be observed here and now and whose direction and specifi c character in the future can be prognosticated, albeit with a certain amount of reservation. Religiosity and development are two interconnected processes in which the person chooses the elements needed in his personal life for the self-regulation of the cognitive, aff ective and behavioral components. For this reason it seems rather diffi cult to determine the function of religiosity in the development of a personality.

  20. Mentoring to develop research selfefficacy, with particular reference to previously disadvantaged individuals

    Directory of Open Access Journals (Sweden)

    S. Schulze

    2010-07-01

    Full Text Available The development of inexperienced researchers is crucial. In response to the lack of research self-efficacy of many previously disadvantaged individuals, the article examines how mentoring can enhance the research self-efficacy of mentees. The study is grounded in the self-efficacy theory (SET – an aspect of the social cognitive theory (SCT. Insights were gained from an in-depth study of SCT, SET and mentoring, and from a completed mentoring project. This led to the formulation of three basic principles. Firstly, institutions need to provide supportive environmental conditions that facilitate research selfefficacy. This implies a supportive and efficient collective system. The possible effects of performance ratings and reward systems at the institution also need to be considered. Secondly, mentoring needs to create opportunities for young researchers to experience successful learning as a result of appropriate action. To this end, mentees need to be involved in actual research projects in small groups. At the same time the mentor needs to facilitate skills development by coaching and encouragement. Thirdly, mentors need to encourage mentees to believe in their ability to successfully complete research projects. This implies encouraging positive emotional states, stimulating self-reflection and self-comparison with others in the group, giving positive evaluative feedback and being an intentional role model.

  1. Merged ontology for engineering design: Contrasting empirical and theoretical approaches to develop engineering ontologies

    DEFF Research Database (Denmark)

    Ahmed, Saeema; Storga, M

    2009-01-01

    This paper presents a comparison of two previous and separate efforts to develop an ontology in the engineering design domain, together with an ontology proposal from which ontologies for a specific application may be derived. The research contrasts an empirical, user-centered approach to develop...... that is theoretically sound and another that is applicable, is recognized and argued. Finally, the merged ontology for engineering design is proposed as a template ontology that can be tailored by researchers and practitioners for a specific context....

  2. Developing a theoretical basis for interpreting multisonde neutron logging

    Energy Technology Data Exchange (ETDEWEB)

    Polyachenko, A.L.; Shaposhnikova, T.A.

    1979-01-01

    The authors examine the current status of the theoretical development of multisonde neutron logging (MNK) and address the following problems in the area of MNK interpretation: 1) the formation of a multigroup, final-differential set program to calculate direct problems in the empirical curve relationships of MNK; 2) the physical nature of transfer and distribution of neutrons in a well-strata system (utilizing a simplified analytical theory); 3) the selection of the type of thermal and non-thermal neutron particles to be recorded by gamma radiation capture (which is based on a comparative analysis of total and partial error in determining the water content of strata utilizing each of these MNK modifications); 4) developing a system of calculative departure curves for both reinforced and non-reinforced oil and gas wells; 5) the construction of MNK diagrams for final strata thickness; 6) an approximation of analytical-numerical solutions to inverse MNK problems based on an analogaous inverse INNK (impulsed neutron-neutron logging) solutions; 7) an appraisal of the MNK method and associated theories for optimizing instruments and determining the limits to the information provided by this method. The need to continue research in the above areas 1, 4, 6, and 7 is underscored. Such research should be conducted on a three-dimensional rapid-acting calculation algorithm based on physical modeling.

  3. Rate of torque and electromyographic development during anticipated eccentric contraction is lower in previously strained hamstrings.

    Science.gov (United States)

    Opar, David A; Williams, Morgan D; Timmins, Ryan G; Dear, Nuala M; Shield, Anthony J

    2013-01-01

    The effect of prior strain injury on myoelectrical activity of the hamstrings during tasks requiring high rates of torque development has received little attention. To determine if recreational athletes with a history of unilateral hamstring strain injury will exhibit lower levels of myoelectrical activity during eccentric contraction, rate of torque development (RTD), and impulse (IMP) at 30, 50, and 100 milliseconds after the onset of myoelectrical activity or torque development in the previously injured limb compared with the uninjured limb. Case control study; Level of evidence, 3. Twenty-six recreational athletes were recruited. Of these, 13 athletes had a history of unilateral hamstring strain injury (all confined to biceps femoris long head), and 13 had no history of hamstring strain injury. Following familiarization, all athletes undertook isokinetic dynamometry testing and surface electromyography (integrated EMG; iEMG) assessment of the biceps femoris long head and medial hamstrings during eccentric contractions at -60 and -180 deg·s(-1). In the injured limb of the injured group, compared with the contralateral uninjured limb, RTD and IMP was lower during -60 deg·s(-1) eccentric contractions at 50 milliseconds (RTD: injured limb, 312.27 ± 191.78 N·m·s(-1) vs uninjured limb, 518.54 ± 172.81 N·m·s(-1), P = .008; IMP: injured limb, 0.73 ± 0.30 N·m·s vs uninjured limb, 0.97 ± 0.23 N·m·s, P = .005) and 100 milliseconds (RTD: injured limb, 280.03 ± 131.42 N·m·s(-1) vs uninjured limb, 460.54 ± 152.94 N·m·s(-1), P = .001; IMP: injured limb, 2.15 ± 0.89 N·m·s vs uninjured limb, 3.07 ± 0.63 N·m·s, P contraction. Biceps femoris long head muscle activation was lower at 100 milliseconds at both contraction speeds (-60 deg·s(-1), normalized iEMG activity [×1000]: injured limb, 26.25 ± 10.11 vs uninjured limb, 33.57 ± 8.29, P = .009; -180 deg·s(-1), normalized iEMG activity [×1000]: injured limb, 31.16 ± 10.01 vs uninjured limb, 39.64

  4. Charge transfer plasmons: Recent theoretical and experimental developments

    Science.gov (United States)

    Koya, Alemayehu Nana; Lin, Jingquan

    2017-06-01

    The unique property of a charge transfer plasmon (CTP) that emerges in conductively bridged plasmonic nanoparticles makes linked nanosystems suitable candidates for building artificial molecules, nanomotors, sensors, and other optoelectronic devices. In this focused review, we present recent theoretical and experimental developments in fundamentals and applications of CTPs in conductively coupled metallic nanoparticles of various sizes and shapes. The underlying physics of charge transfer in linked nanoparticles with nanometer- and atomic-scale inter-particle gap is described from both classical and quantum mechanical perspectives. In addition, we present a detailed discussion of mechanisms of controlling charge transfer and tuning the corresponding CTP spectra in bridged nanoparticles as functions of junction conductance and nanoparticle parameters. Furthermore, the active control of reversible switching between capacitive and conductive coupling in plasmonic nanoshell particles and dynamic evolution of related plasmon modes are emphasized. Finally, after highlighting the implication of the CTP resonance shift for surface-based sensing applications, we end up with the current challenges and future outlooks of the topic that need to be addressed.

  5. Development of theoretical approach to physics of nuclear molecules

    CERN Document Server

    Kim, G; Yuldashev, B S

    2002-01-01

    The present work is dedicated to the theoretical study of the exotic nuclear systems, which consist of the nuclear molecular complexes of the alpha-chain and halo nuclei. The brief review of the experimental data and the theoretical methods for the nuclear molecular system description is presented. The theoretical research plan is suggested. As the plan carried out and the results obtained, it will be possible to have the deeper understanding of mechanism formation and stability of such system as well as their static and dynamic properties. The possibilities of the unique facilities creation on the basis of nuclear molecular materials of the future are considered. (author)

  6. Development of a theoretical-practical script for clinical simulation.

    Science.gov (United States)

    Fabri, Renata Paula; Mazzo, Alessandra; Martins, José Carlos Amado; Fonseca, Ariadne da Silva; Pedersoli, César Eduardo; Miranda, Fernanda Berchelli Girão; Fumincelli, Laís; Baptista, Rui Carlos Negrão

    2017-04-10

    To develop a theoretical-practical script based on the opinion of experts to be used in simulated clinical activities. Qualitative study through analysis of content of interviews with experts on the theme in order to develop the proposed script. Of the 24 invited experts, 12 specialists from educational institutions in Brazil and abroad participated in the study in compliance with the ethical precepts. The experts responded to questions on the characterization of their study attributes and described the items required for the development of a simulated scenario. In view of the responses obtained, data content was analyzed and classified into units and subunits of significance. The items mentioned for the development of the script generated seven units of significance. The units and subunits of significance were gathered in three stages of the main components of the simulated scenario: prior, preparation, and finals. This study enables an innovative, stimulating teaching experience, making it easier for professors to use the simulation resource as a learning process in an effective and objective manner, as a guide to professors and researchers in the area of clinical simulation. Construir, com base na opinião de peritos, roteiro teórico-prático para uso em atividade clínica simulada. Trata-se de um estudo qualitativo por meio de análise de conteúdo de entrevistas de peritos no assunto para construção do roteiro proposto. Seguido os preceitos éticos, entre os 24 peritos convidados pertencentes a instituições de ensino do Brasil e do exterior. Os peritos responderam a questões sobre a caracterização dos seus atributos de estudo e descreveram os itens imprescindíveis à construção de um cenário simulado. Diante das respostas obtidas, os dados foram analisados em relação ao seu conteúdo e organizados em unidades e subunidades de significância. Participaram 12 especialistas. Os itens mencionados para construção do roteiro originaram sete unidades

  7. Effect of previous exhaustive exercise on metabolism and fatigue development during intense exercise in humans

    DEFF Research Database (Denmark)

    Iaia, F. M.; Perez-Gomez, J.; Nordsborg, Nikolai

    2010-01-01

    The present study examined how metabolic response and work capacity are affected by previous exhaustive exercise. Seven subjects performed an exhaustive cycle exercise ( approximately 130%-max; EX2) after warm-up (CON) and 2 min after an exhaustive bout at a very high (VH; approximately 30 s), high...... during a repeated high-intensity exercise lasting 1/2-2 min....

  8. Internet Use and Cognitive Development: A Theoretical Framework

    Science.gov (United States)

    Johnson, Genevieve

    2006-01-01

    The number of children and adolescents accessing the Internet as well as the amount of time online are steadily increasing. The most common online activities include playing video games, accessing web sites, and communicating via chat rooms, email, and instant messaging. A theoretical framework for understanding the effects of Internet use on…

  9. Synchronous development of breast cancer and chest wall fibrosarcoma after previous mantle radiation for Hodgkin's disease

    International Nuclear Information System (INIS)

    Patlas, Michael; McCready, David; Kulkarni, Supriya; Dill-Macky, Marcus J.

    2005-01-01

    Survivors of Hodgkin's disease are at increased risk of developing a second malignant neoplasm, including breast carcinoma and sarcoma. We report the first case of synchronous development of chest wall fibrosarcoma and breast carcinoma after mantle radiotherapy for Hodgkin's disease. Mammographic, sonographic and MR features are demonstrated. (orig.)

  10. Sustainable development, tourism and territory. Previous elements towards a systemic approach

    Directory of Open Access Journals (Sweden)

    Pierre TORRENTE

    2009-01-01

    Full Text Available Today, tourism is one of the major challenges for many countries and territories. The balance of payments, an ever-increasing number of visitors and the significant development of the tourism offer clearly illustrate the booming trend in this sector. This macro-economic approach is often used by the organizations in charge of tourism, WTO for instance. Quantitative assessments which consider the satisfaction of customers’ needs as an end in itself have prevailed both in tourism development schemes and in prospective approaches since the sixties.

  11. Theoretical development of information science: A brief history

    DEFF Research Database (Denmark)

    Hjørland, Birger

    2017-01-01

    This paper presents a brief history of information science (IS) as viewed by the author. The term ‘information science’ goes back to 1955 and evolved in the aftermath of Claude Shannon’s ‘information theory’ (1948), which also inspired research into problems in fields of library science and docum......This paper presents a brief history of information science (IS) as viewed by the author. The term ‘information science’ goes back to 1955 and evolved in the aftermath of Claude Shannon’s ‘information theory’ (1948), which also inspired research into problems in fields of library science...... the strongest “paradigms” in the field is a tradition derived from the Cranfield experiments in the 1960s and the bibliometric research following the publication of Science Citation Index from 1963 and forward. Among the competing theoretical frameworks, ‘the cognitive view’ became influential from the 1970s...

  12. Theoretical Model of Development of Information Competence among Students Enrolled in Elective Courses

    Science.gov (United States)

    Zhumasheva, Anara; Zhumabaeva, Zaida; Sakenov, Janat; Vedilina, Yelena; Zhaxylykova, Nuriya; Sekenova, Balkumis

    2016-01-01

    The current study focuses on the research topic of creating a theoretical model of development of information competence among students enrolled in elective courses. In order to examine specific features of the theoretical model of development of information competence among students enrolled in elective courses, we performed an analysis of…

  13. Development of a theoretical model for measuring the perceived value of social responsibility of IPEN

    International Nuclear Information System (INIS)

    Mutarelli, Rita de Cassia; Lima, Ana Cecilia de Souza; Sabundjian, Gaiane

    2015-01-01

    Social responsibility has been one of the great discussions in institutional management, and that is an important variable in the strategy and performance of the institutions. The Instituto de Pesquisas Energeticas e Nucleares (IPEN) has worked for the development of environmental and social issues, converging mainly to the benefit of the population. The theory that guides the social responsibility practices is always difficult to measure for several reasons. One reason for this difficulty is that social responsibility involves a variety of issues that are converted in rights, obligations and expectations of different audiences that could be internal and external to the organization. In addition, the different understanding of the institutions about social and environmental issues is another source of complexity. Based on the study context including: the topic being researched, the chosen institute and the questions resulting from the research, the aim of this paper is to propose a theoretical model to describe and analyze the social responsibility of IPEN. The main contribution of this study is to develop a model that integrates the dimensions of social responsibility. These dimensions - also called constructs - are composed of indexes and indicators that were previously used in various contexts of empirical research, combined with the theoretical and conceptual review of social responsibility. The construction of the proposed theoretical model was based on the research of various methodologies and various indicators for measuring social responsibility. This model was statistically tested, analyzed, adjusted, and the end result is a consistent model to measure the perceived value of social responsibility of IPEN. This work could also be applied to other institutions. Moreover, it may be improved and become a tool that will serve as a thermometer to measure social and environmental issues, and will support decision making in various management processes. (author)

  14. Development of a theoretical model for measuring the perceived value of social responsibility of IPEN

    Energy Technology Data Exchange (ETDEWEB)

    Mutarelli, Rita de Cassia; Lima, Ana Cecilia de Souza; Sabundjian, Gaiane, E-mail: rmutarelli@gmail.com, E-mail: aclima@ipen.br, E-mail: gdjian@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2015-07-01

    Social responsibility has been one of the great discussions in institutional management, and that is an important variable in the strategy and performance of the institutions. The Instituto de Pesquisas Energeticas e Nucleares (IPEN) has worked for the development of environmental and social issues, converging mainly to the benefit of the population. The theory that guides the social responsibility practices is always difficult to measure for several reasons. One reason for this difficulty is that social responsibility involves a variety of issues that are converted in rights, obligations and expectations of different audiences that could be internal and external to the organization. In addition, the different understanding of the institutions about social and environmental issues is another source of complexity. Based on the study context including: the topic being researched, the chosen institute and the questions resulting from the research, the aim of this paper is to propose a theoretical model to describe and analyze the social responsibility of IPEN. The main contribution of this study is to develop a model that integrates the dimensions of social responsibility. These dimensions - also called constructs - are composed of indexes and indicators that were previously used in various contexts of empirical research, combined with the theoretical and conceptual review of social responsibility. The construction of the proposed theoretical model was based on the research of various methodologies and various indicators for measuring social responsibility. This model was statistically tested, analyzed, adjusted, and the end result is a consistent model to measure the perceived value of social responsibility of IPEN. This work could also be applied to other institutions. Moreover, it may be improved and become a tool that will serve as a thermometer to measure social and environmental issues, and will support decision making in various management processes. (author)

  15. EDUCATION FOR SUSTAINABLE DEVELOPMENT AND SCHOOL GEOGRAPHY. THEORETICAL CONSIDERATIONS

    Directory of Open Access Journals (Sweden)

    PÉTER BAGOLY-SIMÓ

    2013-01-01

    Full Text Available Over the last three decades, the concept of sustainable development has enjoyed growing attention. Transporting sustainable development into all forms of education is connected to Education for Sustainable Development (ESD. Due to its role in society, formal education plays a special part in the process of ESD implementation. This paper takes a closer look at the interconnectedness between sustainable development, ESD, and formal education by focusing on school geography, a subject with special affinity to both concepts and topics of ESD.

  16. Axiological aspects of sustainable development with theoretical and empirical approach

    Directory of Open Access Journals (Sweden)

    Włodzimierz Kaczocha

    2011-01-01

    Full Text Available The first part of the paper presents the values – goals, which are contained in political programs of sustainable development. These values (e.g. social justice, intergenerational justice, liberty, sustainable consumption and value of nature should be explained with respect to the assumptions of ethics of beliefs, obligation or responsibility. The second part discusses the results of empirical studies which focused on certain goals-values of sustainable development achieved by residents of rural areas. The third part contains analytical interpretation of three values: positive liberty, social justice and community, which are of key importance to sustainable development. The final fourth part discusses political and ethical dilemmas which must be faced by Polish politicians: should we design and implement sustainable development evenly or, in consideration of the ethical aspect; should we start first from radical improvement in conditions of living among poor people?

  17. What is Trained Develops! Theoretical Perspective on Skill Learning

    Directory of Open Access Journals (Sweden)

    Hermundur Sigmundsson

    2017-06-01

    Full Text Available Knowledge about developmental theories is important for experts or specialists working with children following normal development and children who have various kinds of dysfunction, in order to better understand what happens with processes associated with motor behavior. In this article, we have explored how theories of development and learning can be used to understand processes associated with motor behavior. A probabilistic perspective emphasizes that the changes taking place in the development is a result of interaction: structural changes in the nervous system leading to changes in function and behavior and opposite, functional changes resulting in changes in structure. This bidirectional interaction between biological and experiential aspects is a continuous process which cannot be reduced to either organism or environment. Dynamical systems theory (DST emphasizes that it is the interaction between the person, the environment, and the task that changes how our movements are, also in terms of how we develop and learn new movements. The interplay between these factors will, over time, lead to changes in motor development. The importance of experience is central to Edelman's theory of neuronal group selection (NGST. Activation of the nervous system increases the connections between certain areas of the brain, and the selection processes in the brain are a result of enhancement of neural connections involved in a "successful" motion. The central nervous system adapts its structure and function in response to internal and external influences, and hence neural plasticity is a prerequisite for learning and development. We argue that Edelman´s approach supports the theory of specificity of learning. From the perspectives of probabilistic epigenesis, DST, and NGST, we can see that being physically active and having the opportunity to get different movement experiences are of great significance for promoting motor development and learning. A

  18. What drives adult personality development? : A comparison of theoretical perspectives and empirical evidence

    NARCIS (Netherlands)

    Specht, J.; Bleidorn, W.; Denissen, J.J.A.; Hennecke, M.; Hutteman, R.; Luhmann, M.; Orth, U.; Reitz, A.K.; Zimmerman, J.

    2014-01-01

    Increasing numbers of empirical studies provide compelling evidence that personality traits change across the entire lifespan. What initiates this continuing personality development and how does this development proceed? In this paper, we compare six theoretical perspectives that offer testable

  19. Towards a Theory of University Entrepreneurship: Developing a Theoretical Model

    Science.gov (United States)

    Woollard, David

    2010-01-01

    This paper sets out to develop a robust theory in a largely atheoretical field of study. The increasing importance of entrepreneurship in delivering the "Third Mission" calls for an enhanced understanding of the university entrepreneurship phenomenon, not solely as a subject of academic interest but also to guide the work of practitioners in the…

  20. Education for sustainable development (ESD) : exploring theoretical and practical challenges

    NARCIS (Netherlands)

    dr. Frans Meijers; Helen Kopnina

    2014-01-01

    Purpose: This article aims to explore the challenges posed by the conceptual framework and diversity of practice of education for sustainable development (ESD). The implications of plurality of ESD perspectives and methodological approaches as well variations in ESD practice will be addressed.

  1. Theoretical Framework of Researcher Knowledge Development in Mathematics Education

    Science.gov (United States)

    Kontorovich, Igor'

    2016-01-01

    The goal of this paper is to present a framework of researcher knowledge development in conducting a study in mathematics education. The key components of the framework are: knowledge germane to conducting a particular study, processes of knowledge accumulation, and catalyzing filters that influence a researcher's decision making. The components…

  2. The Comer School Development Program: A Theoretical Analysis.

    Science.gov (United States)

    Anson, Amy R.; And Others

    1991-01-01

    Examines the School Development Program of James Comer, first essayed in two predominantly Black New Haven (Connecticut) elementary schools. His theories of school improvement stress stability, autonomy, institutional loyalty, warmth of daily interaction, and other elements present in Black families and communities in prior decades. (DM)

  3. Avoidance learning: a review of theoretical models and recent developments

    Science.gov (United States)

    Krypotos, Angelos-Miltiadis; Effting, Marieke; Kindt, Merel; Beckers, Tom

    2015-01-01

    Avoidance is a key characteristic of adaptive and maladaptive fear. Here, we review past and contemporary theories of avoidance learning. Based on the theories, experimental findings and clinical observations reviewed, we distill key principles of how adaptive and maladaptive avoidance behavior is acquired and maintained. We highlight clinical implications of avoidance learning theories and describe intervention strategies that could reduce maladaptive avoidance and prevent its return. We end with a brief overview of recent developments and avenues for further research. PMID:26257618

  4. THEORETICAL ASPECTS OF SOCIAL AND ECONOMIC ENTERPRISE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    M. Rymkina

    2014-04-01

    Full Text Available Changing main factors of production advocates an important component of the enterprises management and needs to be further profound research at current conditions. Increasingly the successful of doing business depends on intellectual opportunities that implemented in the production process. Thus, intellectual, human and social capitals become in the foreground. For today, exactly these levers form the dependable development long-term and competitiveness of enterprises globally and in Ukraine in particular.

  5. Handbook of Time Series Analysis Recent Theoretical Developments and Applications

    CERN Document Server

    Schelter, Björn; Timmer, Jens

    2006-01-01

    This handbook provides an up-to-date survey of current research topics and applications of time series analysis methods written by leading experts in their fields. It covers recent developments in univariate as well as bivariate and multivariate time series analysis techniques ranging from physics' to life sciences' applications. Each chapter comprises both methodological aspects and applications to real world complex systems, such as the human brain or Earth's climate. Covering an exceptionally broad spectrum of topics, beginners, experts and practitioners who seek to understand the latest de

  6. Dynamical Systems Method and Applications Theoretical Developments and Numerical Examples

    CERN Document Server

    Ramm, Alexander G

    2012-01-01

    Demonstrates the application of DSM to solve a broad range of operator equations The dynamical systems method (DSM) is a powerful computational method for solving operator equations. With this book as their guide, readers will master the application of DSM to solve a variety of linear and nonlinear problems as well as ill-posed and well-posed problems. The authors offer a clear, step-by-step, systematic development of DSM that enables readers to grasp the method's underlying logic and its numerous applications. Dynamical Systems Method and Applications begins with a general introduction and

  7. Theoretical models in the development of advertising for food products

    DEFF Research Database (Denmark)

    Bech-Larsen, Tino; Stacey, Julia

    2005-01-01

    the advertisement influences the target may serve as creative inspiration and as a common frame of reference for those involved in the development of advertisements. The means-end-chain model says that an advertisement is effective by connecting the product's attributes (means) and the target's personal values...... apples. One proposal, which is based on the meansendchain model, tries to establish a connection between the vitamin and energy content of apples and the personal value: quality of life. The other one is made in the traditional fashion, ie without the use of theoreticalmodels. Its message is that apples...

  8. Development of Theoretical Descriptors for Cytotoxicity Evaluation of Metallic Nanoparticles.

    Science.gov (United States)

    Boukhvalov, D W; Yoon, T H

    2017-08-21

    Motivated by the recent development of quantitative structure-activity relationship (QSAR) methods in the area of nanotoxicology, we proposed an approach to develop additional descriptors based on results of first-principles calculations. For the evaluation of the biochemical activity of metallic nanoparticles, we consider two processes: ion extraction from the surface of a specimen to aqueous media and water dissociation on the surface. We performed calculations for a set of metals (Al, Fe, Cu, Ag, Au, and Pt). Taking into account the diversity of atomic structures of real metallic nanoparticles, we performed calculations for different models such as (001) and (111) surfaces, nanorods, and two different cubic nanoparticles of 0.6 and 0.3 nm size. Significant energy dependence of the processes from the selected model of nanoparticle suggests that for the correct description we should combine the calculations for several representative models. In addition to the descriptors of chemical activity of the metallic nanoparticles for the two studied processes, we propose descriptors for taking into account the dependence of chemical activity from the size and shape of nanoparticles. Routes to minimization of computational costs for these calculations are also discussed.

  9. Urban Agglomerations in Regional Development: Theoretical, Methodological and Applied Aspects

    Directory of Open Access Journals (Sweden)

    Andrey Vladimirovich Shmidt

    2016-09-01

    Full Text Available The article focuses on the analysis of the major process of modern socio-economic development, such as the functioning of urban agglomerations. A short background of the economic literature on this phenomenon is given. There are the traditional (the concentration of urban types of activities, the grouping of urban settlements by the intensive production and labour communications and modern (cluster theories, theories of network society conceptions. Two methodological principles of studying the agglomeration are emphasized: the principle of the unity of the spatial concentration of economic activity and the principle of compact living of the population. The positive and negative effects of agglomeration in the economic and social spheres are studied. Therefore, it is concluded that the agglomeration is helpful in the case when it brings the agglomerative economy (the positive benefits from it exceed the additional costs. A methodology for examination the urban agglomeration and its role in the regional development is offered. The approbation of this methodology on the example of Chelyabinsk and Chelyabinsk region has allowed to carry out the comparative analysis of the regional centre and the whole region by the main socio-economic indexes under static and dynamic conditions, to draw the conclusions on a position of the city and the region based on such socio-economic indexes as an average monthly nominal accrued wage, the cost of fixed assets, the investments into fixed capital, new housing supply, a retail turnover, the volume of self-produced shipped goods, the works and services performed in the region. In the study, the analysis of a launching site of the Chelyabinsk agglomeration is carried out. It has revealed the following main characteristics of the core of the agglomeration in Chelyabinsk (structure feature, population, level of centralization of the core as well as the Chelyabinsk agglomeration in general (coefficient of agglomeration

  10. Development and validation of a theoretical test in basic laparoscopy

    DEFF Research Database (Denmark)

    Strandbygaard, Jeanett; Maagaard, Mathilde; Larsen, Christian Rifbjerg

    2012-01-01

    conversational interviews with experts in laparoscopy. The subsequent relevance of the test questions was evaluated using the Delphi method involving regional chief physicians. Construct validity was tested by comparing test results from three groups with expected different clinical competence and knowledge...... levels: senior medical students, first-year residents, and chief physicians. RESULTS: The four conversational interviews resulted in the development of 47 test questions, which were narrowed down to 37 test questions after two Delphi rounds involving 12 chief physicians. Significant differences were...... found between the test scores from the senior medical students (n = 14) and the first-year residents (n = 52) (median test scores, 18 vs. 24, respectively; p = 0.001), and between the first-year residents and the chief physicians (n = 12) (median test scores, 24 vs. 33, respectively; p = 0...

  11. Multiscale atomistic simulation of metal-oxygen surface interactions: Methodological development, theoretical investigation, and correlation with experiment

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Judith C. [Univ. of Pittsburgh, Pittsburgh, PA (United States)

    2015-01-09

    The purpose of this grant is to develop the multi-scale theoretical methods to describe the nanoscale oxidation of metal thin films, as the PI (Yang) extensive previous experience in the experimental elucidation of the initial stages of Cu oxidation by primarily in situ transmission electron microscopy methods. Through the use and development of computational tools at varying length (and time) scales, from atomistic quantum mechanical calculation, force field mesoscale simulations, to large scale Kinetic Monte Carlo (KMC) modeling, the fundamental underpinings of the initial stages of Cu oxidation have been elucidated. The development of computational modeling tools allows for accelerated materials discovery. The theoretical tools developed from this program impact a wide range of technologies that depend on surface reactions, including corrosion, catalysis, and nanomaterials fabrication.

  12. Description of group-theoretical model of developed turbulence

    International Nuclear Information System (INIS)

    Saveliev, V L; Gorokhovski, M A

    2008-01-01

    We propose to associate the phenomenon of stationary turbulence with the special self-similar solutions of the Euler equations. These solutions represent the linear superposition of eigenfields of spatial symmetry subgroup generators and imply their dependence on time through the parameter of the symmetry transformation only. From this model, it follows that for developed turbulent process, changing the scale of averaging (filtering) of the velocity field is equivalent to composition of scaling, translation and rotation transformations. We call this property a renormalization-group invariance of filtered turbulent fields. The renormalization group invariance provides an opportunity to transform the averaged Navier-Stokes equation over a small scale (inner threshold of the turbulence) to larger scales by simple scaling. From the methodological point of view, it is significant to note that the turbulent viscosity term appeared not as a result of averaging of the nonlinear term in the Navier-Stokes equation, but from the molecular viscosity term with the help of renormalization group transformation.

  13. Description of group-theoretical model of developed turbulence

    Energy Technology Data Exchange (ETDEWEB)

    Saveliev, V L [Institute of Ionosphere, Almaty 050020 (Kazakhstan); Gorokhovski, M A [Laboratoire de Mecanique des Fluides et Acoustique, Ecole Centrale de Lyon, 36, Avenue Guy de Collongues, F69134 Ecully-Cedex (France)], E-mail: saveliev@topmail.kz, E-mail: mikhael.gorokhovski@ec-lyon.fr

    2008-12-15

    We propose to associate the phenomenon of stationary turbulence with the special self-similar solutions of the Euler equations. These solutions represent the linear superposition of eigenfields of spatial symmetry subgroup generators and imply their dependence on time through the parameter of the symmetry transformation only. From this model, it follows that for developed turbulent process, changing the scale of averaging (filtering) of the velocity field is equivalent to composition of scaling, translation and rotation transformations. We call this property a renormalization-group invariance of filtered turbulent fields. The renormalization group invariance provides an opportunity to transform the averaged Navier-Stokes equation over a small scale (inner threshold of the turbulence) to larger scales by simple scaling. From the methodological point of view, it is significant to note that the turbulent viscosity term appeared not as a result of averaging of the nonlinear term in the Navier-Stokes equation, but from the molecular viscosity term with the help of renormalization group transformation.

  14. Formation and development of theoretical principles for mineral resources logistics

    Directory of Open Access Journals (Sweden)

    Б. К. Плоткин

    2017-03-01

    Full Text Available Market transformations in Russia became foundations for formation and development of a new scientific and practical field in economics – logistics. Out of more than 30 existing definitions of logistics the authors according to their opinion have chosen the most appropriate. Logistics of mineral resources should be attributed to production (industrial logistics. It is a proven fact that processes of supply chain management in mining industry and its infrastructure in the framework of mineral resources chain have some fundamental distinctions. Importance of material resources recycling in theory and practice of mineral resources logistics has been highlighted. Special features of merchandise assortment and classifications in the mining industry have been examined in conjunction with substantial contents of material flow. Special consideration has been given to relevant issues in the field of price formation for mining produce, in the view of specific relations between its costs and logistic procurement of the industry. Moreover, questions of inventory control in the mining industry, activity of commodity exchanges, management of mining logistics system have been addressed.

  15. Linking agriculture and environment: theoretical framework and experiences from developed and developing countries

    International Nuclear Information System (INIS)

    Siwar, C.; Hossain, E.

    2005-01-01

    Despite significantly contributing to country's overall economic development through providing employment for the people and supplying raw materials for agro- and resource based industrial development, agriculture is putting serious burden on the environment in the process of production and consumption of agricultural produce. It is the largest consumer and polluter of water resources and contributor of atmospheric pollution, land degradation and forest reduction. Agriculture-environmental relationship is complex and the relationship depends on the spatial and biophysical factors and country's level of economic development. This paper tried to document the linkages between agricultural practices and policies with environment. The channels, through which agriculture impacts the environment, is discussed. It is seen that multilateral trade liberalization in agriculture interacts with the domestic agricultural policy reforms to determine the environmental impacts of agriculture. It is seen that agricultural policy reforms and agricultural trade liberalization can have separate environmental effects in the developed and developing countries. A wide range of theoretical and empirical literatures are reviewed, in this paper, to understand the concepts, linkages and environmental problems. Finally, this paper ends up with the conclusion that integrating environmental considerations into domestic agricultural policies and implementing agro-environmental programmes may ensure the decline of environmental problems of agriculture in both the developed and developing countries. (author)

  16. Development of a theoretical framework of factors affecting patient safety incident reporting: a theoretical review of the literature.

    Science.gov (United States)

    Archer, Stephanie; Hull, Louise; Soukup, Tayana; Mayer, Erik; Athanasiou, Thanos; Sevdalis, Nick; Darzi, Ara

    2017-12-27

    The development and implementation of incident reporting systems within healthcare continues to be a fundamental strategy to reduce preventable patient harm and improve the quality and safety of healthcare. We sought to identify factors contributing to patient safety incident reporting. To facilitate improvements in incident reporting, a theoretical framework, encompassing factors that act as barriers and enablers ofreporting, was developed. Embase, Ovid MEDLINE(R) and PsycINFO were searched to identify relevant articles published between January 1980 and May 2014. A comprehensive search strategy including MeSH terms and keywords was developed to identify relevant articles. Data were extracted by three independent researchers; to ensure the accuracy of data extraction, all studies eligible for inclusion were rescreened by two reviewers. The literature search identified 3049 potentially eligible articles; of these, 110 articles, including >29 726 participants, met the inclusion criteria. In total, 748 barriers were identified (frequency count) across the 110 articles. In comparison, 372 facilitators to incident reporting and 118 negative cases were identified. The top two barriers cited were fear of adverse consequences (161, representing 21.52% of barriers) and process and systems of reporting (110, representing 14.71% of barriers). In comparison, the top two facilitators were organisational (97, representing 26.08% of facilitators) and process and systems of reporting (75, representing 20.16% of facilitators). A wide range of factors contributing to engagement in incident reporting exist. Efforts that address the current tendency to under-report must consider the full range of factors in order to develop interventions as well as a strategic policy approach for improvement. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  17. Professional Development and Use of Digital Technologies by Science Teachers: a Review of Theoretical Frameworks

    Science.gov (United States)

    Fernandes, Geraldo W. Rocha; Rodrigues, António M.; Ferreira, Carlos Alberto

    2018-03-01

    This article aims to characterise the research on science teachers' professional development programs that support the use of Information and Communication Technologies (ICTs) and the main trends concerning the theoretical frameworks (theoretical foundation, literature review or background) that underpin these studies. Through a systematic review of the literature, 76 articles were found and divided into two axes on training science teachers and the use of digital technologies with their categories. The first axis (characterisation of articles) presents the category key features that characterise the articles selected (major subjects, training and actions for the professional development and major ICT tools and digital resources). The second axis (trends of theoretical frameworks) has three categories organised in theoretical frameworks that emphasise the following: (a) the digital technologies, (b) prospects of curricular renewal and (c) cognitive processes. It also characterised a group of articles with theoretical frameworks that contain multiple elements without deepening them or that even lack a theoretical framework that supports the studies. In this review, we found that many professional development programs for teachers still use inadequate strategies for bringing about change in teacher practices. New professional development proposals are emerging with the objective of minimising such difficulties and this analysis could be a helpful tool to restructure those proposals.

  18. [Development of critical reading on theoretical papers. Criticism of the teaching performance].

    Science.gov (United States)

    Pérez-Márquez, María Guadalupe Lourdes; Aguilar-Mejía, Estela; Trujillo-Galván, Francisco David

    2009-01-01

    The critical reading development requires the reader get involved with author idea, systematizing, arguing and debating the information sources. Our objective was to evaluate the development of the skill to critical reading of theoretical text in education with an educational strategies aimed to promote active participation. A study of intervention, comparative, multicentre and prospective with five groups of students was designed An instrument was refined and validated to measure the critical reading ability of theoretical text before and after the educational strategies, that had in common the aim to favor development critical reading from the participative approach of the education. Before the educational intervention the D group and E group had higher median score showing statistical difference (p = 0.02) than the other control groups. After educational intervention the skill for critical reading was similar (p = 0.20). Teaching performance during the development of educational strategy promotes the participation that favors in a similar way the critical reading of theoretical texts.

  19. Theoretical Grounds of Identification of the Essence of the Enterprise Development Efficiency Category

    Directory of Open Access Journals (Sweden)

    Adzhavenko Maryna M.

    2014-02-01

    Full Text Available Modern economic conditions put a new problem in front of scientists, namely: capability of an enterprise to survive in the unfavourable external environment. This problem is a system and complex one and its solution is within the plane of management of capital, personnel, development, efficiency, etc. The article marks out that efficiency is a corner stone of the modern economic science, which justifies studies of the gnoseological essence of the efficiency category. The main goal of the article lies in the study of scientific and theoretical grounds of formation of the enterprise development efficiency under modern conditions of the changing internal and external environments. The other goals of the article are identification of the essence of the development efficiency category, deepening the theoretical foundation of assessment of efficiency of enterprise development in the modern economic science. The article conducts an ontological analysis of the essence and goals of the enterprise development efficiency notion, studies evolution of scientific approaches and systemises theoretical provisions of the specified category and their assessment in the economic science. In the result of the study the article identifies a new vector of theoretical grounds and dominating logic of formation of the methodology of assessment of efficiency of enterprises under conditions of innovation development of the state, namely: it underlines principles of systemacy, complexity, self-organisation, significance of human capital as an important factor of increase of efficiency and development. Development of methodological grounds of assessment of efficiency of enterprise innovation development is a prospective direction of further studies.

  20. Development and experimental evaluation of theoretical models for ion cyclotron resonance frequency heating of tokamak plasmas

    Energy Technology Data Exchange (ETDEWEB)

    Mantsinen, M. [Helsinki Univ. of Technology, Espoo (Finland). Dept. of Technical Physics

    1999-06-01

    toroidal momentum. For a trapped ion, this leads to a change in its radial position. If toroidally asymmetric ICRF waves are used, the resulting spatial drift of the trapped ions is either inwards or outwards depending on the direction of the launched ICRF wave. ICRF heating experiments with different ICRF antenna phasings at JET give first experimental evidence for the presence of this ICRF-induced pinch. Significant differences are observed when the ICRF waves are launched in opposite toroidal directions. Analysis of the experiments with a three-dimensional orbit-averaged Monte Carlo code shows that the observations are consistent with theory. A technique for fast numerical evaluation of the wave-particle interaction in such a code has been developed and implemented. In general, good agreement between the simulations and experimental results has been obtained, which indicates that the present theoretical picture of ICRF heating is consistent with experiments. This gives confidence in simulations of other experiments and in the modelling ICRF heating schemes for future reactor plasmas. However, certain limitations have been identified in the present modelling of mode conversion and high-power ICRF heating in low-density plasmas, which require further investigation. (orig.) 75 refs. The thesis includes also six previous publications by author

  1. Criteria for Continuing Professional Development of Technology Teachers' Professional Knowledge: A Theoretical Perspective

    Science.gov (United States)

    Engelbrecht, Werner; Ankiewicz, Piet

    2016-01-01

    Continuing professional teacher development (CPTD) is generally accepted as an indispensable tool for the professional development of technology teachers. The current theoretical framework for CPTD comprises a variety of models. However, criteria underpinning these models are not explicit. If, in turn, the criteria were explicit, it could serve as…

  2. Validation of a Previously Developed Geospatial Model That Predicts the Prevalence of Listeria monocytogenes in New York State Produce Fields.

    Science.gov (United States)

    Weller, Daniel; Shiwakoti, Suvash; Bergholz, Peter; Grohn, Yrjo; Wiedmann, Martin; Strawn, Laura K

    2016-02-01

    Technological advancements, particularly in the field of geographic information systems (GIS), have made it possible to predict the likelihood of foodborne pathogen contamination in produce production environments using geospatial models. Yet, few studies have examined the validity and robustness of such models. This study was performed to test and refine the rules associated with a previously developed geospatial model that predicts the prevalence of Listeria monocytogenes in produce farms in New York State (NYS). Produce fields for each of four enrolled produce farms were categorized into areas of high or low predicted L. monocytogenes prevalence using rules based on a field's available water storage (AWS) and its proximity to water, impervious cover, and pastures. Drag swabs (n = 1,056) were collected from plots assigned to each risk category. Logistic regression, which tested the ability of each rule to accurately predict the prevalence of L. monocytogenes, validated the rules based on water and pasture. Samples collected near water (odds ratio [OR], 3.0) and pasture (OR, 2.9) showed a significantly increased likelihood of L. monocytogenes isolation compared to that for samples collected far from water and pasture. Generalized linear mixed models identified additional land cover factors associated with an increased likelihood of L. monocytogenes isolation, such as proximity to wetlands. These findings validated a subset of previously developed rules that predict L. monocytogenes prevalence in produce production environments. This suggests that GIS and geospatial models can be used to accurately predict L. monocytogenes prevalence on farms and can be used prospectively to minimize the risk of preharvest contamination of produce. Copyright © 2016, American Society for Microbiology. All Rights Reserved.

  3. [Development of the theoretical orientation of psychotherapists. SPR Collaborative Research Network].

    Science.gov (United States)

    Ambühl, H; Orlinsky, D; Cierpka, M; Buchheim, P; Meyerberg, J; Willutzki, U

    1995-01-01

    This article explores the extent to which, and ways in which, German speaking psychotherapists modify their theoretical orientations as a function of increasing clinical experience. The data for this come from the Development of Psychotherapists Common Core Questionnaire (CCQ), an instrument designed by the SPR Collaborative Research Network to collect a broad range of information about the therapist's background, training, practice etc. Two sections ask directly about the theoretical framework used by therapists to guide their therapeutic work, using a set of scales to assess the degree to which practitioners rely on various general models (analytic/psychodynamic, behavioral, humanistic, cognitive, systems theory, other). This permits the construction of profiles of formal and content based theoretical orientation patterns. By asking the question separately about the therapist's current practice, and about their practices as beginners, it also permits an evaluation of self-assessed change. In order to amplify the meaning of the theoretical background we ask therapists to indicate the relative importance of their patients realizing each of a series of therapeutic goals. The findings show very clearly that psychotherapists are very diverse both in the formal patterns and specific contents of their therapeutic orientations, and that they tend, as a role, to integrate two or more distinct theoretical approaches in guiding their clinical work with patients. The adherence to theoretical orientations has a strong impact on the goals that therapists typically work toward with their patients. Our findings show that therapists do pursue different goals depending on which conceptual framework they rely on.

  4. [Incidence and clinical risk factors for the development of diabetes mellitus in women with previous gestational diabetes].

    Science.gov (United States)

    Domínguez-Vigo, P; Álvarez-Silvares, E; Alves-Pérez M T; Domínguez-Sánchez, J; González-González, A

    2016-04-01

    Gestational diabetes is considered a variant of diabetes mellitus as they share a common pathophysiological basis: insulin resistance in target and insufficient secretion of it by pancreatic p-cell bodies. Pregnancy is a unique physiological situation provides an opportunity to identify future risk of diabetes mellitus. To determine the long-term incidence of diabetes mellitus in women who have previously been diagnosed with gestational diabetes and identifying clinical risk factors for developing the same. nested case-control cohort study. 671 patients between 1996 and 2009 were diagnosed with gestational diabetes were selected. The incidence of diabetes mellitus was estimated and 2 subgroups were formed: Group A or cases: women who develop diabetes mellitus after diagnosis of gestational diabetes. Group B or control: random sample of 71 women with a history of gestational diabetes in the follow-up period remained normoglycemic. Both groups were studied up to 18 years postpartum. By studying Kaplan Meier survival of the influence of different gestational variables it was obtained in the later development of diabetes mellitus with time parameter and COX models for categorical variables were applied. Significant variables were studied by multivariate Cox analysis. In all analyzes the Hazard ratio was calculated with confidence intervals at 95%. The incidence of diabetes mellitus was 10.3% in patients with a history of gestational diabetes. They were identified as risk factors in the index pregnancy to later development of diabetes mellitus: greater than 35 and younger than 27 years maternal age, BMI greater than 30 kg/m2, hypertensive disorders of pregnancy, insulin therapy, poor metabolic control and more than a complicated pregnancy with gestational diabetes. Clinical factors have been identified in the pregnancy complicated by gestational diabetes that determine a higher probability of progression to diabetes mellitus in the medium and long term.

  5. Planning policy, sustainability and housebuilder practices: The move into (and out of?) the redevelopment of previously developed land.

    Science.gov (United States)

    Karadimitriou, Nikos

    2013-05-01

    This paper explores the transformations of the housebuilding industry under the policy requirement to build on previously developed land (PDL). This requirement was a key lever in promoting the sustainable urban development agenda of UK governments from the early 1990s to 2010 and has survived albeit somewhat relaxed and permutated in the latest National Planning Policy Framework (NPPF). The paper therefore looks at the way in which the policy push towards densification and mixed use affected housebuilders' business strategy and practices and their ability to cope with the 2007 downturn of the housing market and its aftermath. It also points out the eventual feedback of some of these practices into planning policy. Following the gradual shift of British urban policy focus towards sustainability which started in the early 1990s, new configurations of actors, new skills, strategies and approaches to managing risk emerged in property development and housebuilding. There were at least two ways in which housebuilders could have responded to the requirements of developing long term mixed use high density projects on PDL. One way was to develop new products and to employ practices and combinations of practices involving phasing, a flexible approach to planning applications and innovative production methods. Alternatively, they could approach PDL development as a temporary turn of policy or view mixed use high density schemes as a niche market to be explored without drastically overhauling the business model of the entire firm. These transformations of the UK housebuilding sector were unfolding during a long period of buoyancy in the housing market which came to an end in 2007. Very little is known both about how housebuilder strategies and production practices evolved during the boom years as well as about how these firms coped with the effects of the 2007 market downturn. The paper draws on published data (company annual reports, government statistics) and primary

  6. Planning policy, sustainability and housebuilder practices: The move into (and out of?) the redevelopment of previously developed land

    Science.gov (United States)

    Karadimitriou, Nikos

    2013-01-01

    This paper explores the transformations of the housebuilding industry under the policy requirement to build on previously developed land (PDL). This requirement was a key lever in promoting the sustainable urban development agenda of UK governments from the early 1990s to 2010 and has survived albeit somewhat relaxed and permutated in the latest National Planning Policy Framework (NPPF). The paper therefore looks at the way in which the policy push towards densification and mixed use affected housebuilders’ business strategy and practices and their ability to cope with the 2007 downturn of the housing market and its aftermath. It also points out the eventual feedback of some of these practices into planning policy. Following the gradual shift of British urban policy focus towards sustainability which started in the early 1990s, new configurations of actors, new skills, strategies and approaches to managing risk emerged in property development and housebuilding. There were at least two ways in which housebuilders could have responded to the requirements of developing long term mixed use high density projects on PDL. One way was to develop new products and to employ practices and combinations of practices involving phasing, a flexible approach to planning applications and innovative production methods. Alternatively, they could approach PDL development as a temporary turn of policy or view mixed use high density schemes as a niche market to be explored without drastically overhauling the business model of the entire firm. These transformations of the UK housebuilding sector were unfolding during a long period of buoyancy in the housing market which came to an end in 2007. Very little is known both about how housebuilder strategies and production practices evolved during the boom years as well as about how these firms coped with the effects of the 2007 market downturn. The paper draws on published data (company annual reports, government statistics) and primary

  7. Transactors, Transformers and Beyond. A Multi-Method Development of a Theoretical Typology of Leadership.

    Science.gov (United States)

    Pearce, Craig L.; Sims, Henry P., Jr.; Cox, Jonathan F.; Ball, Gail; Schnell, Eugene; Smith, Ken A.; Trevino, Linda

    2003-01-01

    To extend the transactional-transformational model of leadership, four theoretical behavioral types of leadership were developed based on literature review and data from studies of executive behavior (n=253) and subordinate attitudes (n=208). Confirmatory factor analysis of a third data set (n=702) support the existence of four leadership types:…

  8. A Historical Analysis of Academic Development Using the Theoretical Lens of Pierre Bourdieu

    Science.gov (United States)

    Kloot, Bruce Charles

    2015-01-01

    This paper provides a history of academic development by examining how a South African institution coped with the potent social forces confronting it before the collapse of apartheid. Theoretically, it draws on the framework of Pierre Bourdieu and engages with a paper written a decade ago by Naidoo, who also used Bourdieu to understand…

  9. Curriculum, Curriculum Development, Curriculum Studies? Problematising Theoretical Ambiguities in Doctoral Theses in the Education Field

    Science.gov (United States)

    du Preez, Petro; Simmonds, Shan

    2014-01-01

    Theoretical ambiguities in curriculum studies result in conceptual mayhem. Accordingly, they hinder the development of the complicated conversation on curriculum as a verb. This article aims to contribute to reconceptualizing curriculum studies as a dynamic social practice that aspires to thinking and acting with intelligences and sensitivity so…

  10. Development of a code system DEURACS for theoretical analysis and prediction of deuteron-induced reactions

    OpenAIRE

    Nakayama Shinsuke; Kouno Hiroshi; Watanabe Yukinobu; Iwamoto Osamu; Ye Tao; Ogata Kazuyuki

    2017-01-01

    We have developed an integrated code system dedicated for theoretical analysis and prediction of deuteron-induced reactions, which is called DEUteron-induced Reaction Analysis Code System (DEURACS). DEURACS consists of several calculation codes based on theoretical models to describe respective reaction mechanisms and it was successfully applied to (d,xp) and (d,xn) reactions. In the present work, the analysis of (d,xn) reactions is extended to higher incident energy up to nearly 100 MeV and ...

  11. The theoretical and political framing of the population factor in development.

    Science.gov (United States)

    Campbell, Martha; Bedford, Kathleen

    2009-10-27

    The silence about population growth in recent decades has hindered the ability of those concerned with ecological change, resource scarcity, health and educational systems, national security, and other global challenges to look with maximum objectivity at the problems they confront. Two central questions about population--(1) is population growth a problem? and (2) what causes fertility decline?--are often intertwined; if people think the second question implies possible coercion, or fear of upsetting cultures, they can be reluctant to talk about the first. The classic and economic theories explaining the demographic transition assume that couples want many children and they make decisions to have a smaller family when some socio-economic change occurs. However, there are numerous anomalies to this explanation. This paper suggests that the societal changes are neither necessary nor sufficient for family size to fall. Many barriers of non-evidence-based restrictive medical rules, cost, misinformation and social traditions exist between women and the fertility regulation methods and correct information they need to manage their family size. When these barriers are reduced, birth rates tend to decline. Many of the barriers reflect a patriarchal desire to control women, which can be largely explained by evolutionary biology. The theoretical explanations of fertility should (i) attach more weight to the many barriers to voluntary fertility regulation, (ii) recognize that a latent desire to control fertility may be far more prevalent among women than previously understood, and (iii) appreciate that women implicitly and rationally make benefit-cost analyses based on the information they have, wanting modern family planning only after they understand it is a safe option. Once it is understood that fertility can be lowered by purely voluntary means, comfort with talking about the population factor in development will rise.

  12. Theoretical framework and methodological development of common subjective health outcome measures in osteoarthritis: a critical review

    Directory of Open Access Journals (Sweden)

    Johnston Marie

    2007-03-01

    Full Text Available Abstract Subjective measures involving clinician ratings or patient self-assessments have become recognised as an important tool for the assessment of health outcome. The value of a health outcome measure is usually assessed by a psychometric evaluation of its reliability, validity and responsiveness. However, psychometric testing involves an accumulation of evidence and has recognised limitations. It has been suggested that an evaluation of how well a measure has been developed would be a useful additional criteria in assessing the value of a measure. This paper explored the theoretical background and methodological development of subjective health status measures commonly used in osteoarthritis research. Fourteen subjective health outcome measures commonly used in osteoarthritis research were examined. Each measure was explored on the basis of their i theoretical framework (was there a definition of what was being assessed and was it part of a theoretical model? and ii methodological development (what was the scaling strategy, how were the items generated and reduced, what was the response format and what was the scoring method?. Only the AIMS, SF-36 and WHOQOL defined what they were assessing (i.e. the construct of interest and no measure assessed was part of a theoretical model. None of the clinician report measures appeared to have implemented a scaling procedure or described the rationale for the items selected or scoring system. Of the patient self-report measures, the AIMS, MPQ, OXFORD, SF-36, WHOQOL and WOMAC appeared to follow a standard psychometric scaling method. The DRP and EuroQol used alternative scaling methods. The review highlighted the general lack of theoretical framework for both clinician report and patient self-report measures. This review also drew attention to the wide variation in the methodological development of commonly used measures in OA. While, in general the patient self-report measures had good methodological

  13. Developing young adolescents’ self-regulation by means of formative assessment: A theoretical perspective

    OpenAIRE

    Meusen-Beekman, Kelly; Joosten-ten Brinke, Desirée; Boshuizen, Els

    2018-01-01

    Fostering self-regulated learning (SRL) has become increasingly important at various educational levels. Most studies on SRL have been conducted in higher education. The present literature study aims toward understanding self-regulation processes of students in primary and secondary education. We explored the development of young students’ self-regulation from a theoretical perspective. In addition, effective characteristics for an intervention to develop young students’ self-regulation were ...

  14. Theoretical Guidelines for the Development of Reading Comprehension Using Metacognitive Strategies

    Directory of Open Access Journals (Sweden)

    Yelitza del Carmen Morillo Terán

    2016-11-01

    Full Text Available The research aims to generate theoretical development of reading comprehension guidance by using metacognitive strategies in the IUTEMBI University Institute of Technology "Mario Briceño Iragorry" located in Valera, Trujillo state. Referential theories will be based on Pujol (2010, Pinzás (2013, among others. For the qualitative development through the phenomenological method supported by hermeneutics that enable understanding of the phenomena in its various manifestations approach is assumed. Key informants will be selected according to criteria of qualitative research, based on the fact that teachers are the aforementioned institution and pledged to voluntarily participate in the research. So they are regarded as informers three teachers and three students of different races that offer this university. For the development of the study will be used as instruments an unstructured interview, audio recordings, that will study in depth analysis units. The findings allow the aforementioned theoretical generating orientations.

  15. Dependence of tropical cyclone development on coriolis parameter: A theoretical model

    Science.gov (United States)

    Deng, Liyuan; Li, Tim; Bi, Mingyu; Liu, Jia; Peng, Melinda

    2018-03-01

    A simple theoretical model was formulated to investigate how tropical cyclone (TC) intensification depends on the Coriolis parameter. The theoretical framework includes a two-layer free atmosphere and an Ekman boundary layer at the bottom. The linkage between the free atmosphere and the boundary layer is through the Ekman pumping vertical velocity in proportion to the vorticity at the top of the boundary layer. The closure of this linear system assumes a simple relationship between the free atmosphere diabatic heating and the boundary layer moisture convergence. Under a set of realistic atmospheric parameter values, the model suggests that the most preferred latitude for TC development is around 5° without considering other factors. The theoretical result is confirmed by high-resolution WRF model simulations in a zero-mean flow and a constant SST environment on an f -plane with different Coriolis parameters. Given an initially balanced weak vortex, the TC-like vortex intensifies most rapidly at the reference latitude of 5°. Thus, the WRF model simulations confirm the f-dependent characteristics of TC intensification rate as suggested by the theoretical model.

  16. Development of a theoretical guide for nursing care in cardiac arrest

    Directory of Open Access Journals (Sweden)

    Aliandra Bittencourt da Silva

    2013-11-01

    Full Text Available This study aimed to identify the knowledge on cardiorespiratory arrest among nurses in a hospital of Vale do Paraíba, São Paulo, Brazil, and develop a theoretical guide for care of this emergency. We prepared an instrument of data collection based on relevant literature and the 2010 AHA Guidelines for CPR, from August to October 2012. The sample consisted of 41 nurses who deliver care activities in various units of the hospital. The study showed that professional participants said they were able to act in cardiopulmonary resuscitation, however, there were limitations of knowledge about the theme. Given the above, we developed a theoretical guide for cardiac arrest care based on scientific literature and covering questions submitted by nurses.

  17. RECENT DEVELOPMENTS OF THE FINANCIAL REPORTING MODEL: THEORETICAL STUDIES IN REVIEW

    OpenAIRE

    Bonaci Carmen Giorgiana; Matis Dumitru

    2011-01-01

    Our paper analyzes the manner in which the financial reporting model evolved towards fair value accounting. After a brief introduction into the context of financial reporting at international level, the analysis focuses on the accounting model of fair value. This is done by synthesizing main studies in accounting research literature that analyze fair value accounting through a theoretical approach. The analysis being developed relies on literature review methodology. The main purpose of the d...

  18. The development of literary competence of future teachers-philologists: conceptual and theoretical aspects

    OpenAIRE

    Людмила Олександрівна Базиль

    2015-01-01

    The theoretical and conceptual aspects of literary competence of future teacher-philologist are described in the article. It is proved that literary competence as personal and professional phenomenon determines the success of self-affirmation of the teacher of Ukrainian language and literature. Literary competence distinguishes multi-element contents and structure, developing for active living, aimed at the comprehension of literary and artistic phenomena, literary-critical research, research...

  19. Social existence: between subjective and objective conditions. Impact on the theoretical discussion on development

    Directory of Open Access Journals (Sweden)

    Aura González Serna

    2012-01-01

    Full Text Available This article aims to instill reflections on the theoretical debate around the development. The premise for fixing the analysis is to consider the impact of modes of apprehending social existence, since it is demarcated between subjectivities and objective conditions. Different conceptions appear to interpret and represent the individual and collective imagination. Fragmentation between subjectivity and objectivity, constitute an impediment to understanding the generic nature of being that builds and permanently transformed the social existence.

  20. Theoretical development and first-principles analysis of strongly correlated systems

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Chen [Iowa State Univ., Ames, IA (United States)

    2016-12-17

    A variety of quantum many-body methods have been developed for studying the strongly correlated electron systems. We have also proposed a computationally efficient and accurate approach, named the correlation matrix renormalization (CMR) method, to address the challenges. The initial implementation of the CMR method is designed for molecules which have theoretical advantages, including small size of system, manifest mechanism and strongly correlation effect such as bond breaking process. The theoretic development and benchmark tests of the CMR method are included in this thesis. Meanwhile, ground state total energy is the most important property of electronic calculations. We also investigated an alternative approach to calculate the total energy, and extended this method for magnetic anisotropy energy (MAE) of ferromagnetic materials. In addition, another theoretical tool, dynamical mean- field theory (DMFT) on top of the DFT , has also been used in electronic structure calculations for an Iridium oxide to study the phase transition, which results from an interplay of the d electrons' internal degrees of freedom.

  1. Curriculum, curriculum development, curriculum studies? Problematising theoretical ambiguities in doctoral theses in the education field

    Directory of Open Access Journals (Sweden)

    Petro du Preez

    2014-06-01

    Full Text Available Theoretical ambiguities in curriculum studies result in conceptual mayhem. Accordingly, they hinder the development of the complicated conversation on curriculum as a verb. This article aims to contribute to reconceptualizing curriculum studies as a dynamic social practice that aspires to thinking and acting with intelligences and sensitivity so as to understand oneself and others. It also raises awareness that equating all forms of research on curriculum with curriculum studies dilutes the scope of the conversation. This exploration asks two key questions: What is the nature of doctoral theses in the field of education's theoretical contributions to nuances of curriculum (curriculum, curriculum development, and curriculum studies? In what ways do these theses perpetuate or even add to current ambiguities in the discipline of curriculum studies? The exploration of these two questions draws on a critical meta-study of 511 theses completed in South African universities (2005-2012 conducted using a three level process. It appears that the main detractions of these theses are that some of them see curriculum studies as a dumping ground and others make no theoretical contribution to the discipline. The article concludes by suggesting ways which would encourage the intellectual advancement of curriculum studies through rigorous disciplinarity.

  2. EVOLUTION AND TRENDS IN EDUCATIONAL MARKETING DEVELOPMENT: THEORETICAL AND METHODOLOGICAL ASPECTS

    Directory of Open Access Journals (Sweden)

    Ecaterina ŞIŞCAN

    2016-03-01

    Full Text Available The development of the knowledge-based economy, society computerization, globalization and regionalization processes, enhanced dynamics of labor markets, increased competition in the market for higher education etc. have generated profound changes at the level of universities in order to increase their competitiveness both domestically and internationally. These changes require the need for a new way of thinking and designing the activity of higher education institutions based on marketing principles. This article contains a theoretical approach to the concept of educational marketing through the development of marketing theories and models.

  3. Theoretical Atomic Physics code development IV: LINES, A code for computing atomic line spectra

    International Nuclear Information System (INIS)

    Abdallah, J. Jr.; Clark, R.E.H.

    1988-12-01

    A new computer program, LINES, has been developed for simulating atomic line emission and absorption spectra using the accurate fine structure energy levels and transition strengths calculated by the (CATS) Cowan Atomic Structure code. Population distributions for the ion stages are obtained in LINES by using the Local Thermodynamic Equilibrium (LTE) model. LINES is also useful for displaying the pertinent atomic data generated by CATS. This report describes the use of LINES. Both CATS and LINES are part of the Theoretical Atomic PhysicS (TAPS) code development effort at Los Alamos. 11 refs., 9 figs., 1 tab

  4. Theoretical atomic physics code development I: CATS: Cowan Atomic Structure Code

    International Nuclear Information System (INIS)

    Abdallah, J. Jr.; Clark, R.E.H.; Cowan, R.D.

    1988-12-01

    An adaptation of R.D. Cowan's Atomic Structure program, CATS, has been developed as part of the Theoretical Atomic Physics (TAPS) code development effort at Los Alamos. CATS has been designed to be easy to run and to produce data files that can interface with other programs easily. The CATS produced data files currently include wave functions, energy levels, oscillator strengths, plane-wave-Born electron-ion collision strengths, photoionization cross sections, and a variety of other quantities. This paper describes the use of CATS. 10 refs

  5. Spectrophotometric determination of uranium with arsenazo previous liquid-liquid extraction and colour development in organic medium

    International Nuclear Information System (INIS)

    Palomares Delgado, F.; Vera Palomino, J.; Petrement Eguiluz, J. C.

    1964-01-01

    The determination of uranium with arsenazo is hindered by a great number of cation which form stable complexes with the reactive and may given rise to serious interferences. By studying the optimum conditions of uranium the extraction be means of tributylphosphate solutions dissolved in methylisobuthylketone, under conditions for previous masking of the interfering cations, an organic extract was obtained containing all the uranium together with small amounts of iron. The possible interference derived from the latter element is avoided by reduction with hydroxylammoniumchlorid followed by complex formation of the Fe(II)-ortophenantroline compound in alcoholic medium. (Author) 17 refs

  6. Region innovation and investment development: conceptual theoretical approach and business solutions

    Directory of Open Access Journals (Sweden)

    Zozulya D.M.

    2017-01-01

    Full Text Available The article describes essential problems of the region business innovation and investment development under current conditions, issues of crisis restrictions negotiation and innovation-driven economy formation. The relevance of the research is defined by the need of effective tools creation for business innovation and investment development and support, which can be applied, first, to increase efficiency of the region industrial activity, then improve production competitiveness on the innovative basis, overcome existing problems and provide sustainable innovation development in the region. The results of conducted research are represented in the article including region innovation and investment development concept model made up by the authors on the basis of system theoretical approach. The tools of the region innovation development defined in the concept model are briefly reviewed in the article. The most important of them include engineering marketing (marketing of scientific and technical innovations, strategic planning, benchmarking, place marketing and business process modeling.

  7. Developing young adolescents’ self-regulation by means of formative assessment: A theoretical perspective

    Directory of Open Access Journals (Sweden)

    Kelly D. Meusen-Beekman

    2015-12-01

    Full Text Available Fostering self-regulated learning (SRL has become increasingly important at various educational levels. Most studies on SRL have been conducted in higher education. The present literature study aims toward understanding self-regulation processes of students in primary and secondary education. We explored the development of young students’ self-regulation from a theoretical perspective. In addition, effective characteristics for an intervention to develop young students’ self-regulation were examined, as well as the possibilities of implementing formative assessments in primary education to develop self-regulation. The results show that SRL can be supported in both primary and secondary education. However, at both school levels, differences were found, regarding the theoretical background of the training and the type of instructed strategy. Studies so far suggest avenues toward formative assessment, which seems to be a unifying theory of instruction that improves the learning process by developing self-regulation among students. But gaps in knowledge about the impact of formative assessments on the development of SRL strategies among primary school students require further exploration.

  8. Synchronous development of breast cancer and chest wall fibrosarcoma after previous mantle radiation for Hodgkin's disease

    Energy Technology Data Exchange (ETDEWEB)

    Patlas, Michael [Hamilton General Hospital, Department of Radiology, Hamilton, ON (Canada); McCready, David [University Health Network and Mount Sinai Hospital, Department of Surgery, Toronto, ON (Canada); Kulkarni, Supriya; Dill-Macky, Marcus J. [University Health Network and Mount Sinai Hospital, Department of Medical Imaging, Toronto, ON (Canada)

    2005-09-01

    Survivors of Hodgkin's disease are at increased risk of developing a second malignant neoplasm, including breast carcinoma and sarcoma. We report the first case of synchronous development of chest wall fibrosarcoma and breast carcinoma after mantle radiotherapy for Hodgkin's disease. Mammographic, sonographic and MR features are demonstrated. (orig.)

  9. Apparel shopping behaviour – Part 1: Towards the development of a conceptual theoretical model

    Directory of Open Access Journals (Sweden)

    R Du Preez

    2003-10-01

    Full Text Available Apparel shopping behaviour in a multicultural society is a complex phenomenon. The objective of this paper is to analyse various theoretical models from two disciplines, namely Consumer Behaviour and Clothing, and to develop a new conceptual theoretical model focussing on variables influencing apparel shopping behaviour in a multicultural consumer society. Variables were presented as market dominated, consumer dominated, and/or market and consumer interaction variables. Retailers, marketers, educators, researchers and students could benefit from the proposed model and recommendations are made in this regard. Part 2 reports on an empirical study based on the proposed conceptual theoretical model and discusses market segments and profiles. Opsomming Klere-aankoopgedrag in ’n multi-kulturele verbruikersamelewing is ’n komplekse fenomeen. Die doelwit van die artikel is om verskeie teoretiese modelle vanuit twee dissiplines, naamlik Verbruikersielkunde en Kleding, te analiseer. ’n Nuwe konseptuele teoretiese model is ontwikkel. Die model fokus op veranderlikes wat klereaankoopgedrag in ’n multi-kulturele verbruikersamelewing beïnvloed. Veranderlikes word gegroepeer op grond van die mate waartoe dit oorheers word deur die mark, verbruiker en/of die interaksie tussen die mark en die verbruiker. Kleinhandelaars, bemarkers, opvoeders, navorsers en studente sou kon voordeel trek uit die voorgestelde model. Aanbevelings word in dié verband gemaak. In Deel 2 word ’n empiriese studie gerapporteer. Dié studie is op hierdie voorgestelde konseptuele teoretiese model gegrond en marksegmente sowel as profiele word bespreek.

  10. Preliminary Findings in the Development of a Theoretical Framework for Investigating ICT Integration in Teacher Education

    Directory of Open Access Journals (Sweden)

    Suthagar Narasuman

    2012-06-01

    Full Text Available The following report is the result of a preliminary investigation in the development of a theoretical framework for investigating ICT integration, particularly in TESL (Teaching of English as a Second Language teacher training. The study is primarily an empirical effort to develop a theoretical framework for investigating ICT integration in TESL teacher training. In identifying the predictive variables for the framework, the researchers conducted an intensive review of the literature which included a review of various models used in studies on ICT integration. The contributing variables identified in the present study were age, gender, experience, ICT proficiency, attitude, access to ICT infrastructure, support services, and exposure to ICT professional development programmes. In developing the framework, the study sought to determine the extent to which the observed variability in ICT integration could be predicted by these factors. The sample comprised 266 respondents working at the faculty or English Language Unit in various teacher training institutions across the country. The study predominantly employed quantitative methods of data collection. Interview data was used to corroborate information derived from the survey data.

  11. Cognitive models of executive functions development: methodological limitations and theoretical challenges

    Directory of Open Access Journals (Sweden)

    Florencia Stelzer

    2014-01-01

    Full Text Available Executive functions (EF have been defined as a series of higher-order cognitive processes which allow the control of thought, behavior and affection according to the achievement of a goal. Such processes present a lengthy postnatal development which matures completely by the end of adolescence. In this article we make a review of some of the main models of EF development during childhood. The aim of this work is to describe the state of the art related to the topic, identifying the main theoretical difficulties and methodological limitations associated with the different proposed paradigms. Finally, some suggestions are given to cope with such difficulties, emphasizing that the development of an ontology of EF could be a viable alternative to counter them. We believe that futture researches should guide their efforts toward the development of that ontology.

  12. Inflatable Antenna for CubeSat: Extension of the Previously Developed S-Band Design to the X-Band

    Science.gov (United States)

    Babuscia, Alessandra; Choi, Thomas; Cheung, Kar-Ming; Thangavelautham, Jekan; Ravichandran, Mithun; Chandra, Aman

    2015-01-01

    The inflatable antenna for CubeSat is a 1 meter antenna reflector designed with one side reflective Mylar, another side clear Mylar with a patch antenna at the focus. The development of this technology responds to the increasing need for more capable communication systems to allow CubeSats to operate autonomously in interplanetary missions. An initial version of the antenna for the S-Band was developed and tested in both anechoic chamber and vacuum chamber. Recent developments in transceivers and amplifiers for CubeSat at X-band motivated the extension from the S-Band to the X-Band. This paper describes the process of extending the design of the antenna to the X-Band focusing on patch antenna redesign, new manufacturing challenges and initial results of experimental tests.

  13. Theoretical Substantiation of Formation of Integration Forms of Interaction of Enterprises when Developing the Innovation Policy

    Directory of Open Access Journals (Sweden)

    Manoylenko Oleksandr V.

    2014-01-01

    Full Text Available The article considers issues, connected with activation of innovation activity of engineering enterprises on the basis of application of integration forms of interaction. It justifies a necessity of formation of infrastructure of interaction of an enterprise when introducing innovation models of development with consideration of realisation of goals of all interested parties. The article offers a generalised scheme of organisational interaction of an enterprise in external environment and a matrix of functional provision of the integration process. The theoretical approach that is considered in the article allows increase of innovation activity of engineering enterprises and minimisation of expenditures of own resources when realising innovation policy of an enterprise.

  14. Developing a theoretical maintenance model for disordered eating in Type 1 diabetes.

    Science.gov (United States)

    Treasure, J; Kan, C; Stephenson, L; Warren, E; Smith, E; Heller, S; Ismail, K

    2015-12-01

    According to the literature, eating disorders are an increasing problem for more than a quarter of people with Type 1 diabetes and they are associated with accentuated diabetic complications. The clinical outcomes in this group when given standard eating disorder treatments are disappointing. The Medical Research Council guidelines for developing complex interventions suggest that the first step is to develop a theoretical model. To review existing literature to build a theoretical maintenance model for disordered eating in people with Type 1 diabetes. The literature in diabetes relating to models of eating disorder (Fairburn's transdiagnostic model and the dual pathway model) and food addiction was examined and assimilated. The elements common to all eating disorder models include weight/shape concern and problems with mood regulation. The predisposing traits of perfectionism, low self-esteem and low body esteem and the interpersonal difficulties from the transdiagnostic model are also relevant to diabetes. The differences include the use of insulin mismanagement to compensate for breaking eating rules and the consequential wide variations in plasma glucose that may predispose to 'food addiction'. Eating disorder symptoms elicit emotionally driven reactions and behaviours from others close to the individual affected and these are accentuated in the context of diabetes. The next stage is to test the assumptions within the maintenance model with experimental medicine studies to facilitate the development of new technologies aimed at increasing inhibitory processes and moderating environmental triggers. © 2015 The Authors. Diabetic Medicine © 2015 Diabetes UK.

  15. Theoretical morphology and development of flight feather vane asymmetry with experimental tests in parrots.

    Science.gov (United States)

    Feo, Teresa J; Prum, Richard O

    2014-06-01

    Asymmetry in flight feather vane width is a major functional innovation associated with the evolution of flight in the ancestors of birds. However, the developmental and morphological basis of feather shape is not simple, and the developmental processes involved in vane width asymmetry are poorly understood. We present a theoretical model of feather morphology and development that describes the possible ways to modify feather development and produce vane asymmetry. Our model finds that the theoretical morphospace of feather shape is redundant, and that many different combinations of parameters could be responsible for vane asymmetry in a given feather. Next, we empirically measured morphological and developmental model parameters in asymmetric and symmetric feathers from two species of parrots to identify which combinations of parameters create vane asymmetry in real feathers. We found that both longer barbs, and larger barb angles in the relatively wider trailing vane drove asymmetry in tail feathers. Developmentally, longer barbs were the result of an offset of the radial position of the new barb locus, whereas larger barb angles were produced by differential expansion of barbs as the feather unfurls from the tubular feather germ. In contrast, the helical angle of barb ridge development did not contribute to vane asymmetry and could be indicative of a constraint. This research provides the first comprehensive description of both the morphological and developmental modifications responsible for vane asymmetry within real feathers, and identifies key steps that must have occurred during the evolution of vane asymmetry. © 2014 Wiley Periodicals, Inc.

  16. Obesity in sub-Saharan Africa: development of an ecological theoretical framework.

    Science.gov (United States)

    Scott, Alison; Ejikeme, Chinwe Stella; Clottey, Emmanuel Nii; Thomas, Joy Goens

    2013-03-01

    The prevalence of overweight and obesity is increasing in sub-Saharan Africa (SSA). There is a need for theoretical frameworks to catalyze further research and to inform the development of multi-level, context-appropriate interventions. In this commentary, we propose a preliminary ecological theoretical framework to conceptualize factors that contribute to increases in overweight and obesity in SSA. The framework is based on a Causality Continuum model [Coreil et al. Social and Behavioral Foundations of Public Health. Sage Publications, Thousand Oaks] that considers distant, intermediate and proximate influences. The influences incorporated in the model include globalization and urbanization as distant factors; occupation, social relationships, built environment and cultural perceptions of weight as intermediate factors and caloric intake, physical inactivity and genetics as proximate factors. The model illustrates the interaction of factors along a continuum, from the individual to the global marketplace, in shaping trends in overweight and obesity in SSA. The framework will be presented, each influence elucidated and implications for research and intervention development discussed. There is a tremendous need for further research on obesity in SSA. An improved evidence base will serve to validate and develop the proposed framework further.

  17. Converging Paradigms: A Reflection on Parallel Theoretical Developments in Psychoanalytic Metapsychology and Empirical Dream Research.

    Science.gov (United States)

    Schmelowszky, Ágoston

    2016-08-01

    In the last decades one can perceive a striking parallelism between the shifting perspective of leading representatives of empirical dream research concerning their conceptualization of dreaming and the paradigm shift within clinically based psychoanalytic metapsychology with respect to its theory on the significance of dreaming. In metapsychology, dreaming becomes more and more a central metaphor of mental functioning in general. The theories of Klein, Bion, and Matte-Blanco can be considered as milestones of this paradigm shift. In empirical dream research, the competing theories of Hobson and of Solms respectively argued for and against the meaningfulness of the dream-work in the functioning of the mind. In the meantime, empirical data coming from various sources seemed to prove the significance of dream consciousness for the development and maintenance of adaptive waking consciousness. Metapsychological speculations and hypotheses based on empirical research data seem to point in the same direction, promising for contemporary psychoanalytic practice a more secure theoretical base. In this paper the author brings together these diverse theoretical developments and presents conclusions regarding psychoanalytic theory and technique, as well as proposing an outline of an empirical research plan for testing the specificity of psychoanalysis in developing dream formation.

  18. A theoretical cost optimization model of reused flowback distribution network of regional shale gas development

    International Nuclear Information System (INIS)

    Li, Huajiao; An, Haizhong; Fang, Wei; Jiang, Meng

    2017-01-01

    The logistical issues surrounding the timing and transport of flowback generated by each shale gas well to the next is a big challenge. Due to more and more flowback being stored temporarily near the shale gas well and reused in the shale gas development, both transportation cost and storage cost are the heavy burden for the developers. This research proposed a theoretical cost optimization model to get the optimal flowback distribution solution for regional multi shale gas wells in a holistic perspective. Then, we used some empirical data of Marcellus Shale to do the empirical study. In addition, we compared the optimal flowback distribution solution by considering both the transportation cost and storage cost with the flowback distribution solution which only minimized the transportation cost or only minimized the storage cost. - Highlights: • A theoretical cost optimization model to get optimal flowback distribution solution. • An empirical study using the shale gas data in Bradford County of Marcellus Shale. • Visualization of optimal flowback distribution solutions under different scenarios. • Transportation cost is a more important factor for reducing the cost. • Help the developers to cut the storage and transportation cost of reusing flowback.

  19. The reliability of the Associate Platinum digital foot scanner in measuring previously developed footprint characteristics: a technical note.

    Science.gov (United States)

    Papuga, M Owen; Burke, Jeanmarie R

    2011-02-01

    An ink pad and paper, pressure-sensitive platforms, and photography have previously been used to collect footprint data used in clinical assessment. Digital scanners have been widely used more recently to collect such data. The purpose of this study was to evaluate the intra- and interrater reliability of a flatbed digital image scanning technology to capture footprint data. This study used a repeated-measures design on 32 (16 male 16 female) healthy subjects. The following measured indices of footprint were recorded from 2-dimensional images of the plantar surface of the foot recorded with an Associate Platinum (Foot Levelers Inc, Roanoke, VA) digital foot scanner: Staheli index, Chippaux-Smirak index, arch angle, and arch index. Intraclass correlation coefficient (ICC) values were calculated to evaluate intrarater, interday, and interclinician reliability. The ICC values for intrarater reliability were greater than or equal to .817, indicating an excellent level of reproducibility in assessing the collected images. Analyses of variance revealed that there were no significant differences between raters for each index (P > .05). The ICC values also indicated excellent reliability (.881-.971) between days and clinicians in all but one of the indices of footprint, arch angle (.689), with good reliability between clinicians. The full-factorial analysis of variance model did not reveal any interaction effects (P > .05), which indicated that indices of footprint were not changing across days and clinicians. Scanning technology used in this study demonstrated good intra- and interrater reliability measurements of footprint indices, as demonstrated by high ICC values. Copyright © 2011 National University of Health Sciences. Published by Mosby, Inc. All rights reserved.

  20. RECENT DEVELOPMENTS OF THE FINANCIAL REPORTING MODEL: THEORETICAL STUDIES IN REVIEW

    Directory of Open Access Journals (Sweden)

    Bonaci Carmen Giorgiana

    2011-07-01

    Full Text Available Our paper analyzes the manner in which the financial reporting model evolved towards fair value accounting. After a brief introduction into the context of financial reporting at international level, the analysis focuses on the accounting model of fair value. This is done by synthesizing main studies in accounting research literature that analyze fair value accounting through a theoretical approach. The analysis being developed relies on literature review methodology. The main purpose of the developed analysis is to synthesize main pros and cons as being documented through accounting research literature. Our findings underline both the advantages and shortcomings of fair value accounting and of the recent mixed attribute in nowadays financial reporting practices. The concluding remarks synthesize the obtained results and possible future developments of our analysis.

  1. Theoretical justification of indicators system to estimate the regional stability level considering its development peculiarities

    Directory of Open Access Journals (Sweden)

    Granovska Lyudmyla Mykolayivna

    2016-02-01

    Full Text Available The article deals with theoretical analysis of the indicators system concept, observes in details such components of this system as society, nature, economy. The general indicators of social, ecological, and economic system development are considered. It has been found that indicators are the indexes system of ecological, economical, and social development and give the possibility to analyze and control the implementation of areas sustainable development statement. The system of indicators, which characterize the level of the region stability on the basis of domestic and foreign experience considering region peculiarities, has been improved. At that, the regional peculiarities of both the natural and resource potential and the economical activity impact on the natural and resource potential have been taken into account.

  2. Managing Enterprise Innovation Development on the Basis of Controlling: Theoretical Aspect

    Directory of Open Access Journals (Sweden)

    Alyoshyn Serhiy Yu.

    2014-01-01

    Full Text Available The article reveals theoretical aspects of management of enterprise innovation development on the basis of controlling as an integrated system of information and analytical support of decision making processes. Such an approach supplements and establishes logical connections between basic categories and special notions, which allows clarification of the essence of the “management of enterprise innovation development on the basis of controlling” notion. The article draws a conclusion that controlling is an information and functional system, oriented at solution of enterprise innovation development tasks through application of modern management concepts, in particular, system of planning, analysis, accounting and control for achieving the synergy effect from their purposeful functioning and making efficient strategic and operative decisions with the aim of ensuring realisation of the set goals.

  3. Acceptability of healthcare interventions: an overview of reviews and development of a theoretical framework.

    Science.gov (United States)

    Sekhon, Mandeep; Cartwright, Martin; Francis, Jill J

    2017-01-26

    It is increasingly acknowledged that 'acceptability' should be considered when designing, evaluating and implementing healthcare interventions. However, the published literature offers little guidance on how to define or assess acceptability. The purpose of this study was to develop a multi-construct theoretical framework of acceptability of healthcare interventions that can be applied to assess prospective (i.e. anticipated) and retrospective (i.e. experienced) acceptability from the perspective of intervention delivers and recipients. Two methods were used to select the component constructs of acceptability. 1) An overview of reviews was conducted to identify systematic reviews that claim to define, theorise or measure acceptability of healthcare interventions. 2) Principles of inductive and deductive reasoning were applied to theorise the concept of acceptability and develop a theoretical framework. Steps included (1) defining acceptability; (2) describing its properties and scope and (3) identifying component constructs and empirical indicators. From the 43 reviews included in the overview, none explicitly theorised or defined acceptability. Measures used to assess acceptability focused on behaviour (e.g. dropout rates) (23 reviews), affect (i.e. feelings) (5 reviews), cognition (i.e. perceptions) (7 reviews) or a combination of these (8 reviews). From the methods described above we propose a definition: Acceptability is a multi-faceted construct that reflects the extent to which people delivering or receiving a healthcare intervention consider it to be appropriate, based on anticipated or experienced cognitive and emotional responses to the intervention. The theoretical framework of acceptability (TFA) consists of seven component constructs: affective attitude, burden, perceived effectiveness, ethicality, intervention coherence, opportunity costs, and self-efficacy. Despite frequent claims that healthcare interventions have assessed acceptability, it is

  4. Hemoglobin-Based Oxygen Carrier (HBOC) Development in Trauma: Previous Regulatory Challenges, Lessons Learned, and a Path Forward.

    Science.gov (United States)

    Keipert, Peter E

    2017-01-01

    Historically, hemoglobin-based oxygen carriers (HBOCs) were being developed as "blood substitutes," despite their transient circulatory half-life (~ 24 h) vs. transfused red blood cells (RBCs). More recently, HBOC commercial development focused on "oxygen therapeutic" indications to provide a temporary oxygenation bridge until medical or surgical interventions (including RBC transfusion, if required) can be initiated. This included the early trauma trials with HemAssist ® (BAXTER), Hemopure ® (BIOPURE) and PolyHeme ® (NORTHFIELD) for resuscitating hypotensive shock. These trials all failed due to safety concerns (e.g., cardiac events, mortality) and certain protocol design limitations. In 2008 the Food and Drug Administration (FDA) put all HBOC trials in the US on clinical hold due to the unfavorable benefit:risk profile demonstrated by various HBOCs in different clinical studies in a meta-analysis published by Natanson et al. (2008). During standard resuscitation in trauma, organ dysfunction and failure can occur due to ischemia in critical tissues, which can be detected by the degree of lactic acidosis. SANGART'S Phase 2 trauma program with MP4OX therefore added lactate >5 mmol/L as an inclusion criterion to enroll patients who had lost sufficient blood to cause a tissue oxygen debt. This was key to the successful conduct of their Phase 2 program (ex-US, from 2009 to 2012) to evaluate MP4OX as an adjunct to standard fluid resuscitation and transfusion of RBCs. In 2013, SANGART shared their Phase 2b results with the FDA, and succeeded in getting the FDA to agree that a planned Phase 2c higher dose comparison study of MP4OX in trauma could include clinical sites in the US. Unfortunately, SANGART failed to secure new funding and was forced to terminate development and operations in Dec 2013, even though a regulatory path forward with FDA approval to proceed in trauma had been achieved.

  5. Development Mechanism of an Integrated Model for Training of a Specialist and Conceptual-Theoretical Activity of a Teacher

    Science.gov (United States)

    Marasulov, Akhmat; Saipov, Amangeldi; ?rymbayeva, Kulimkhan; Zhiyentayeva, Begaim; Demeuov, Akhan; Konakbaeva, Ulzhamal; Bekbolatova, Akbota

    2016-01-01

    The aim of the study is to examine the methodological-theoretical construction bases for development mechanism of an integrated model for a specialist's training and teacher's conceptual-theoretical activity. Using the methods of generalization of teaching experience, pedagogical modeling and forecasting, the authors determine the urgent problems…

  6. Teoretski pogled na razvojne strukture slovenskega podeželja = Theoretical view on the development structures of Slovenian rural space

    Directory of Open Access Journals (Sweden)

    Marijan M. Klemenčič

    2006-01-01

    Full Text Available Theoretical concepts and research problems of contemporary rural space are presented in the first part of the article, following with the attempt of defining the crucial factors of development and basic structures of Slovenian rural space after the 2nd World War as a starting-point for defining theoretically more advanced concepts in Slovenian geography.

  7. THEORETIC AND METHODOLOGIC BASICS OF DEVELOPMENT OF THE NATIONAL LOGISTICS SYSTEM IN THE REPUBLIC OF BELARUS

    Directory of Open Access Journals (Sweden)

    R. B. Ivut

    2016-01-01

    Full Text Available The article presents the results of a study, the aim of which is the formation of the theoretical and methodological foundations in the framework of scientific maintenance for the further development processes of the national logistics system in the Republic of Belarus. The relevance of the study relates to the fact that at present the introduction of the concept of logistics and the formation of the optimal infrastructure for its implementation are the key factors for economic development of Belarus as a transit country. At the same time the pace of development of the logistic activities in the country is currently slightly lower in comparison with the neighboring countries, as evidenced by the dynamics of the country’s position in international rankings (in particular, according to the LPI index. Overcoming these gaps requires improved competitiveness of the logistics infrastructure in the international market. This, in turn, is possible due to the clear formulation and adherence of the effective functioning principles for macro logistics system of Belarus, as well as by increasing the quality of logistics design by means of applying econometric models and methods presented in the article. The proposed auctorial approach is the differentiation of the general principles of logistics specific to the logistics systems of all levels, and the specific principles of development of the macro level logistics system related to improving its transit attractiveness for international freight carriers. The study also systematizes the model for determining the optimal location of logistics facilities. Particular attention is paid to the methodological basis of the analysis of transport terminals functioning as part of the logistics centers both in the stages of design and operation. The developed theoretical and methodological recommendations are universal and can be used in the design of the logistics infrastructure for various purposes and functions

  8. Theoretical foundations of international migration process studies: analysis of key migration theories development

    Directory of Open Access Journals (Sweden)

    Shymanska K.V.

    2017-03-01

    Full Text Available The need for transformation of Ukraine's migration policy based on globalized world development trends and in response to the challenges of European integration transformations causes the need of researching the theoretical and methodological basis of migration studies, and the regulations of existing theories of international migration. The bibliometric analysis of scientific publications on international migration in cites indexes found that the recent researches on these problems acquire interdisciplinary character. It necessitates the transformation of migration study approaches basing on economic, social, institutional theories and concepts synthesis. The article is devoted to the study of theoretical regulations of existing international migration theories in the context of the evolution of scientists’ views on this phenomenon. The author found that the existing theories of international migration should be divided into three categories (microeconomic, macroeconomic, globalizational that contributes to their understanding in the context of implementation possibilities in migrational public administration practice. It allows to determine the theories which should be used for Ukrainian state migration policy constructing and eliminating or reducing the external migration negative effects.

  9. Development of theoretical oxygen saturation calibration curve based on optical density ratio and optical simulation approach

    Science.gov (United States)

    Jumadi, Nur Anida; Beng, Gan Kok; Ali, Mohd Alauddin Mohd; Zahedi, Edmond; Morsin, Marlia

    2017-09-01

    The implementation of surface-based Monte Carlo simulation technique for oxygen saturation (SaO2) calibration curve estimation is demonstrated in this paper. Generally, the calibration curve is estimated either from the empirical study using animals as the subject of experiment or is derived from mathematical equations. However, the determination of calibration curve using animal is time consuming and requires expertise to conduct the experiment. Alternatively, an optical simulation technique has been used widely in the biomedical optics field due to its capability to exhibit the real tissue behavior. The mathematical relationship between optical density (OD) and optical density ratios (ODR) associated with SaO2 during systole and diastole is used as the basis of obtaining the theoretical calibration curve. The optical properties correspond to systolic and diastolic behaviors were applied to the tissue model to mimic the optical properties of the tissues. Based on the absorbed ray flux at detectors, the OD and ODR were successfully calculated. The simulation results of optical density ratio occurred at every 20 % interval of SaO2 is presented with maximum error of 2.17 % when comparing it with previous numerical simulation technique (MC model). The findings reveal the potential of the proposed method to be used for extended calibration curve study using other wavelength pair.

  10. THEORETICAL APPROACH ON THE ROLE OF INNOVATION IN DEVELOPMENT AND INCREASING COMPETITIVENESS OF ENTERPRISES

    Directory of Open Access Journals (Sweden)

    Valentina Ofelia ROBESCU

    2014-06-01

    Full Text Available The intensity of the process of globalization and the new technological advances have resulted in changes in vision and behavior, so that the competitiveness and survival of European companies is linked increasingly more to IT processes efficiency and knowledge. In general, we consider innovation as a boosting factor of progress even in the period of economic and political crisis in which we find ourselves. The need for this research is the interest of companies from Romania towards innovation. In many industrial enterprises, or in the intermediate category of advice, and even among those in public services it has become necessary because of the innovation manager.. In this paper we dealt with the theoretical notion of innovation and impact on the development of enterprises.

  11. Electron-deuteron DIS with spectator tagging at EIC: Development of theoretical framework

    Science.gov (United States)

    Cosyn, W.; Guzey, V.; Sargsian, M.; Strikman, M.; Weiss, C.

    2016-03-01

    An Electron-Ion Collider (EIC) would enable next-generation measurements of deep-inelastic scattering (DIS) on the deuteron with detection of a forward-moving nucleon (p, n) and measurement of its recoil momentum ("spectator tagging"). Such experiments offer full control of the nuclear configuration during the high-energy process and can be used for precision studies of the neutron's partonic structure and its spin dependence, nuclear modifications of partonic structure, and nuclear shadowing at small x. We review the theoretical description of spectator tagging at EIC energies (light-front nuclear structure, on-shell extrapolation in the recoil nucleon momentum, final-state interactions, diffractive effects at small x) and report about on-going developments.

  12. Electron-deuteron DIS with spectator tagging at EIC: Development of theoretical framework

    Energy Technology Data Exchange (ETDEWEB)

    Cosyn, Wim B. [University of Ghent, Belgium; Guzey, Vadim A. [Petersburg Nuclear Physics Institute, Gatchina, 188300, Russia; Sargsian, Misak M. [Florida Intl Univ., Miami, FL (United States); Strikman, Mark M. [Pennsylvania State Univ., University Park, PA (United States); Weiss, Christian [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-03-01

    An Electron-Ion Collider (EIC) would enable next-generation measurements of deep-inelastic scattering (DIS) on the deuteron with detection of a forward-moving nucleon (p, n) and measurement of its recoil momentum ("spectator tagging''). Such experiments offer full control of the nuclear configuration during the high-energy process and can be used for precision studies of the neutron's partonic structure and its spin dependence, nuclear modifications of partonic structure, and nuclear shadowing at small x. We review the theoretical description of spectator tagging at EIC energies (light-front nuclear structure, on-shell extrapolation in the recoil nucleon momentum, final-state interactions, diffractive effects at small x) and report about on-going developments.

  13. Development and Validation of a Theoretical Test in Endosonography for Pulmonary Diseases

    DEFF Research Database (Denmark)

    Savran, Mona M; Clementsen, Paul Frost; Annema, Jouke T

    2014-01-01

    BACKGROUND: Theoretical testing provides the necessary foundation to perform technical skills. Additionally, testing improves the retention of knowledge. OBJECTIVES: The aims of this study were to develop a multiple-choice test in endosonography for pulmonary diseases and to gather validity...... evidence for this test. METHODS: Initially, 78 questions were constructed after informal conversational interviews with 4 international experts in endosonography. The clarity and content validity of the questions were tested using a Delphi-like approach. Construct validity was explored by administering...... of 46 questions with a mean item discrimination of 0.47 and a mean item difficulty of 0.63. The internal consistency reliability was calculated at 0.91. The 3 groups performed significantly differently (ANOVA: p tests were significant. The experts performed significantly more...

  14. Theory, explanation, and a third generation of theoretical development in social gerontology.

    Science.gov (United States)

    Bengtson, V L; Burgess, E O; Parrott, T M

    1997-03-01

    Efforts at cumulative knowledge building in social gerontology have been lax, judging from research articles published in journals between 1990 and 1994. Too little attention has been paid to the cumulative development of theory; readers are left with many empirical generalizations but underdeveloped explanations by which to interpret findings and build upon them in subsequent research. To assist future theory development in social gerontology, we review seven theoretical perspectives referenced most frequently in recent journals: (1) social constructionist, (2) social exchange, (3) life course, (4) feminist, (5) age stratification (age and society), (6) political economy of aging, and (7) critical theory. We suggest that, taken together, these represent a "third generation" of explanation in social gerontology, noting their debt to older and more established traditions in social science theory. We argue that authors and journal reviewers should place more emphasis on theory development - which means, most simply, the construction of explicit explanations in accounting for empirical findings - if knowledge development about social aspects of aging is to be cumulative, systematic, and incremental.

  15. New theoretical development for the calculating of physical properties of D2O

    International Nuclear Information System (INIS)

    Moreira, Osvaldo

    2011-01-01

    In this work we have developed a new method for calculating the physical properties of heavy water, D 2 O, using the Helmholtz free energy state function, A = U − T S, exclusively for this molecule. The state function has been calculated as ā = ā 0 +ā 1 (specific dimensionless values), where ā 0 is related to the properties of heavy water in gaseous state and ā 1 describes the liquid state. The canonical variables of the state function are absolute temperature and volume. To calculate the physical properties defining absolute pressure and temperature, here a variable change method was developed, based on the solution of a differential equation (function ζ) using numerical algorithms (scaling and Newton-Raphson). Physical quantities calculated are: density ϱ(specific volume υ), specific enthalpy h and entropy s. The results obtained agree completely with the values calculated by the National Institute of Standards and Technology (NIST). In this report it has also proposed an adjustment function to calculate the saturation absolute temperature of heavy water as a function of the pressure: T s (p) = exp[a·b(p)], where a is a vector of constant coefficients and b a vector function of pressure, using theoretical values and extending the wording proposed by the Oak Ridge National Laboratory. The new setting has an error less than 0.03%. (author)

  16. Development of Children's Creative Visual Imagination: A Theoretical Model and Enhancement Programmes

    Science.gov (United States)

    Dziedziewicz, Dorota; Karwowski, Maciej

    2015-01-01

    This paper presents a new theoretical model of creative imagination and its applications in early education. The model sees creative imagination as composed of three inter-related components: vividness of images, their originality, and the level of transformation of imageries. We explore the theoretical and practical consequences of this new…

  17. An algorithm for hyperspectral remote sensing of aerosols: 1. Development of theoretical framework

    International Nuclear Information System (INIS)

    Hou, Weizhen; Wang, Jun; Xu, Xiaoguang; Reid, Jeffrey S.; Han, Dong

    2016-01-01

    This paper describes the first part of a series of investigations to develop algorithms for simultaneous retrieval of aerosol parameters and surface reflectance from a newly developed hyperspectral instrument, the GEOstationary Trace gas and Aerosol Sensor Optimization (GEO-TASO), by taking full advantage of available hyperspectral measurement information in the visible bands. We describe the theoretical framework of an inversion algorithm for the hyperspectral remote sensing of the aerosol optical properties, in which major principal components (PCs) for surface reflectance is assumed known, and the spectrally dependent aerosol refractive indices are assumed to follow a power-law approximation with four unknown parameters (two for real and two for imaginary part of refractive index). New capabilities for computing the Jacobians of four Stokes parameters of reflected solar radiation at the top of the atmosphere with respect to these unknown aerosol parameters and the weighting coefficients for each PC of surface reflectance are added into the UNified Linearized Vector Radiative Transfer Model (UNL-VRTM), which in turn facilitates the optimization in the inversion process. Theoretical derivations of the formulas for these new capabilities are provided, and the analytical solutions of Jacobians are validated against the finite-difference calculations with relative error less than 0.2%. Finally, self-consistency check of the inversion algorithm is conducted for the idealized green-vegetation and rangeland surfaces that were spectrally characterized by the U.S. Geological Survey digital spectral library. It shows that the first six PCs can yield the reconstruction of spectral surface reflectance with errors less than 1%. Assuming that aerosol properties can be accurately characterized, the inversion yields a retrieval of hyperspectral surface reflectance with an uncertainty of 2% (and root-mean-square error of less than 0.003), which suggests self-consistency in the

  18. A conceptual framework related to ICT-AT competence development: The theoretical foundations of ENTELIS.

    Science.gov (United States)

    Mavrou, Katerina; Hoogerwerf, Evert-Jan; Meletiou-Mavrotheris, Maria; Kärki, Anne; Sallinen, Merja

    2015-01-01

    This paper provides an overview of the construction of a conceptual framework regarding ICT-Assistive Technology (ICT-AT) competence development, designed to gain awareness of the elements involved and to facilitate the understanding and exchange among stakeholders of the ENTELIS (European Network for Technology Enhanced Learning in an Inclusive Society) project. The framework was designed based on the basic principles of Activity Theory, which however have been adapted and adjusted to the project's objectives. Hence, it includes a map of actors and other parameters functioning in a person surrounding "ecosystem", and it allows us to understand and map roles, expectations, barriers, as well as to devise solutions to tackle digital divide. Taking as a starting and central point the person and his/her wish to self-determination and fulfilment (quality of life) and the related needs, it provides a map of how the various concepts and variables interact within the theoretical and methodological perspective of the collection, description and assessment of experiences in ICT-AT education and competences development of persons with disabilities (PwD) of all ages. The conceptual framework represents two interacting learning activity systems: (a) the internal system of the end-user, which includes the end-user and his/her needs, the setting where learning takes place and the other actors involved, and (b) the external system, which embraces the internal system but also wider issues of policy and practice and experiences and 'actors' that contribute to the development and use of ICT and ICT-AT skills in all areas of life. The elements of these systems and their interaction provide the basis for analysing experiences and advancing knowledge relevant for bridging the digital divide.

  19. Recent trends in rural Geography studies. Theoretical developments and research areas in Latin America

    Directory of Open Access Journals (Sweden)

    Héctor Ávila Sánchez

    2015-12-01

    Full Text Available In this paper it is made a tour through the various theoretical and methodological routes that support the Rural Geography, in its current forms. The article is part of a wider investigation into the trends and state of the art of rurality between the years 1990 and 2010, with emphasis on rural geography perspective and particularly on the contributions that establish French geography and Anglo-Saxon geography. It highlights how these influences have transcended national geographical schools in some countries of Latin America. At the beginning of the discipline in the early twentieth century, emphasizing the identification and description of landscapes, influenced by the importance of regionalist discourse. Subsequently, rural geographical studies developed under the influence of economic geography, mainly describing large areas of agricultural specialization worldwide (cereal production areas, or Mediterranean agriculture, etc.. Later, from the decade of the eighties, analyze the depth of the territorial changes that occur in rural areas, due to changes in the Fordist and post-Fordist production paradigm, and the arrangements resulting from globalization.

  20. Modelling of long term kinetic evolution: a fruitful relationship between experiment and theoretical development

    International Nuclear Information System (INIS)

    Barbu, A.

    2008-01-01

    Recent developments in multi-scale modelling, based on atomic scale calculations, are leading to a growing conviction that modelling will soon be used to design material components for nuclear reactors. In this article we discuss this assumption on the basis of the relationship between experimental studies and theoretical calculations of the microstructural evolution of materials under irradiation. In the first part of the paper, the available numerical models for long term microstructural evolutions are briefly reviewed. The experimental methods are presented in a second part. In the third part, several examples of fruitful relationships between modelling and experiments are discussed. The first example deals with the isochronal electrical resistivity recovery of electron irradiated ultra pure iron at 14 K, the second one is dedicated to the microstructural evolution of ferritic model alloy during continuous irradiation with 1 MeV electrons at large fluences, the third one is the modelling of He desorption of helium implanted iron, and the fourth example concerns the mechanisms of formation of solute rich clusters observed by 3-dimensional atom probe in irradiated pressure vessel steels of water pressurized nuclear reactors

  1. Strategy for a Rock Mechanics Site Descriptive Model. Development and testing of the theoretical approach

    Energy Technology Data Exchange (ETDEWEB)

    Staub, Isabelle; Fredriksson, Anders; Outters, Nils [Golder Associates AB, Uppsala (Sweden)

    2002-05-01

    In the purpose of studying the possibilities of a Deep Repository for spent fuel, the Swedish Nuclear and Fuel Management Company (SKB) is currently planning for Site Investigations. Data collected from these Site Investigations are interpreted and analysed to achieve the full Site Description, which is built up of models from all the disciplines that are considered of importance for the Site Description. One of these models is the Rock Mechanical Descriptive Model,which would be developed for any site in hard crystalline rock, and is a combination and evaluation of the characterisation of rock mass by means of empirical relationships and a theoretical approach based on numerical modelling. The present report describes the theoretical approach. The characterisation of the mechanical properties of the rock mass, viewed as a unit consisting of intact rock and fractures, is achieved by numerical simulations with following input parameters: initial stresses, fracture geometry, distribution of rock mechanical properties, such as deformation and strength parameters, for the intact rock and for the fractures. The numerical modelling was performed with the two-dimensional code UDEC, and the rock block models were generated from 2D trace sections extracted from the 3D Discrete Fracture Network (DFN) model. Assumptions and uncertainties related to the set-up of the model are considered. The numerical model was set-up to simulate a plain strain-loading test. Different boundary conditions were applied on the model for simulating stress conditions (I) in the undisturbed rock mass, and (II) at the proximity of a tunnel. In order to assess the reliability of the model sensitivity analyses have been conducted on some rock block models for defining the dependency of mechanical properties to in situ stresses, the influence of boundary conditions, rock material and joint constitutive models used to simulate the behaviour of intact rock and fractures, domain size and anisotropy. To

  2. Development and application of theoretical models for Rotating Detonation Engine flowfields

    Science.gov (United States)

    Fievisohn, Robert

    As turbine and rocket engine technology matures, performance increases between successive generations of engine development are becoming smaller. One means of accomplishing significant gains in thermodynamic performance and power density is to use detonation-based heat release instead of deflagration. This work is focused on developing and applying theoretical models to aid in the design and understanding of Rotating Detonation Engines (RDEs). In an RDE, a detonation wave travels circumferentially along the bottom of an annular chamber where continuous injection of fresh reactants sustains the detonation wave. RDEs are currently being designed, tested, and studied as a viable option for developing a new generation of turbine and rocket engines that make use of detonation heat release. One of the main challenges in the development of RDEs is to understand the complex flowfield inside the annular chamber. While simplified models are desirable for obtaining timely performance estimates for design analysis, one-dimensional models may not be adequate as they do not provide flow structure information. In this work, a two-dimensional physics-based model is developed, which is capable of modeling the curved oblique shock wave, exit swirl, counter-flow, detonation inclination, and varying pressure along the inflow boundary. This is accomplished by using a combination of shock-expansion theory, Chapman-Jouguet detonation theory, the Method of Characteristics (MOC), and other compressible flow equations to create a shock-fitted numerical algorithm and generate an RDE flowfield. This novel approach provides a numerically efficient model that can provide performance estimates as well as details of the large-scale flow structures in seconds on a personal computer. Results from this model are validated against high-fidelity numerical simulations that may require a high-performance computing framework to provide similar performance estimates. This work provides a designer a new

  3. Confident but not theoretically grounded – experienced simulation educators’ perceptions of their own professional development

    Directory of Open Access Journals (Sweden)

    Allvin R

    2017-01-01

    experienced simulation educators’ perceptions of their own teaching skills, practices, and understanding of teaching over time. Methods: A qualitative exploratory study. Fourteen experienced simulation educators participated in individual open-ended interviews focusing on their development as simulation educators. Data were analyzed using an inductive thematic analysis. Results: Marked educator development was discerned over time, expressed mainly in an altered way of thinking and acting. Five themes were identified: shifting focus, from following to utilizing a structure, setting goals, application of technology, and alignment with profession. Being confident in the role as an instructor seemed to constitute a foundation for the instructor’s pedagogical development. Conclusion: Experienced simulation educators’ pedagogical development was based on self-confidence in the educator role, and not on a deeper theoretical understanding of teaching and learning. This is the first clue to gain increased understanding regarding educational level and possible education needs among simulation educators, and it might generate several lines of research for further studies. Keywords: continuing professional development, interviews, medical simulation, pedagogical development, simulation educator

  4. Mass balance approaches for estimating the intestinal absorption and metabolism of peptides and analogues: theoretical development and applications

    Science.gov (United States)

    Sinko, P. J.; Leesman, G. D.; Amidon, G. L.

    1993-01-01

    A theoretical analysis for estimating the extent of intestinal peptide and peptide analogue absorption was developed on the basis of a mass balance approach that incorporates convection, permeability, and reaction. The macroscopic mass balance analysis (MMBA) was extended to include chemical and enzymatic degradation. A microscopic mass balance analysis, a numerical approach, was also developed and the results compared to the MMBA. The mass balance equations for the fraction of a drug absorbed and reacted in the tube were derived from the general steady state mass balance in a tube: [formula: see text] where M is mass, z is the length of the tube, R is the tube radius, Pw is the intestinal wall permeability, kr is the reaction rate constant, C is the concentration of drug in the volume element over which the mass balance is taken, VL is the volume of the tube, and vz is the axial velocity of drug. The theory was first applied to the oral absorption of two tripeptide analogues, cefaclor (CCL) and cefatrizine (CZN), which degrade and dimerize in the intestine. Simulations using the mass balance equations, the experimental absorption parameters, and the literature stability rate constants yielded a mean estimated extent of CCL (250-mg dose) and CZN (1000-mg dose) absorption of 89 and 51%, respectively, which was similar to the mean extent of absorption reported in humans (90 and 50%). It was proposed previously that 15% of the CCL dose spontaneously degraded systematically; however, our simulations suggest that significant CCL degradation occurs (8 to 17%) presystemically in the intestinal lumen.(ABSTRACT TRUNCATED AT 250 WORDS).

  5. Theoretical Developments In Environmental Management Accounting And The Role And Importance Of MFCA

    Directory of Open Access Journals (Sweden)

    Doorasamy Mishelle

    2015-06-01

    Full Text Available Environmental Management Accounting (EMA is a broader concept of accounting which uses accounting tools and practices to support company-internal management decision making on environmental issues and its impact on company performance. Research on EMA can be divided into two broad categories: theoretical and empirical studies. The theoretical studies based on framework that aim to explain the nature of the relationship between economic and environmental performance and the adoption of Environmental Management Accounting in a business environment. The empirical studies follow two lines of research, instrumental studies aim to empirically test the relationships hypothesized in theoretical studies; descriptive studies are intended to examine the factors that encourage the adoption of EMA. This review paper examined the role of MFCA in identifying non-product output (waste and its impact on an organisations profitability. Various case studies are examined in this article that demonstrates MFCA to an important environmental management tool to ensure future sustainability of an organisation.

  6. Theoretical and Methodological Principles of Developing Translational Capabilities of Controlling in Ensuring Sustainable Development of the Enterprise

    Directory of Open Access Journals (Sweden)

    Tarasova Tetiana O.

    2016-08-01

    controlling. There presented a model of conceptual environment of controlling in the system of sustainable development management, which serves as the theoretical basis for building the organizational structure of the subdivision of controlling at the enterprise and a methodological basis for accounting and analytical support of management functions and the formalization of the controlling procedures. This made it possible to form the priority objectives of controlling: growth of the enterprise market value; formalization of the evaluation and management of risks; creation of conditions for further development of the controlling system in the information society.

  7. Theoretical Framework for the Design and Development of a Personal Identity Profile fostering Interpersonal Trust in Virtual Project teams

    NARCIS (Netherlands)

    Rusman, Ellen; Van Bruggen, Jan; Koper, Rob

    2007-01-01

    Rusman, E., Van Bruggen, J., & Koper, R. (2007). Theoretical framework for the design and development of a personal identity profile fostering interpersonal trust in virtual project teams. Proceedings of the 6th workshop on social intelligence design (pp. 279-286). July, 2-4, 2007, Trento, Italy,

  8. Caring science and the science of unitary human beings: a trans-theoretical discourse for nursing knowledge development.

    Science.gov (United States)

    Watson, Jean; Smith, Marlaine C

    2002-03-01

    Two dominant discourses in contemporary nursing theory and knowledge development have evolved over the past few decades, in part by unitary science views and caring theories. Rogers' science of unitary human beings (SUHB) represents the unitary directions in nursing. Caring theories and related caring science (CS) scholarship represent the other. These two contemporary initiatives have generated two parallel, often controversial, seemingly separate and unrelated, trees of knowledge for nursing science. This paper explores the evolution of CS and its intersection with SUHB that have emerged in contemporary nursing literature. We present a case for integration, convergence, and creative synthesis of CS with SUHB. A trans-theoretical, trans-disciplinary context emerges, allowing nursing to sustain its caring ethic and ontology, within a unitary science. The authors critique and review the seminal, critical issues that have separated contemporary knowledge developments in CS and SUHB. Foundational issues of CS, and Watson's theory of transpersonal caring science (TCS), as a specific exemplar, are analysed, alongside parallel themes in SUHB. By examining hidden ethical-ontological and paradigmatic commonalities, trans-theoretical themes and connections are explored and revealed between TCS and SUHB. Through a creative synthesis of TCS and SUHB we explicate a distinct unitary view of human with a relational caring ontology and ethic that informs nursing as well as other sciences. The result: is a trans-theoretical, trans-disciplinary view for nursing knowledge development. Nursing's history has been to examine theoretical differences rather than commonalities. This trans-theoretical position moves nursing toward theoretical integration and creative synthesis, vs. separation, away from the 'Balkanization' of different theories. This initiative still maintains the integrity of different theories, while facilitating and inviting a new discourse for nursing science. The

  9. Developing Doctoral Authors: Engaging with Theoretical Perspectives through the Literature Review

    Science.gov (United States)

    Wisker, Gina

    2015-01-01

    The literature review is arguably the place in a thesis where doctoral authors convincingly engage with theory and theoretical perspectives underlying their research, situating their own contribution to knowledge in established and ongoing dialogues in the field. One difficulty doctoral candidates encounter in their learning to be researchers is…

  10. Developing a Theoretical Framework for Examining Student Understanding of Fractional Concepts: An Historical Accounting

    Science.gov (United States)

    Cooper, Susan M.; Wilkerson, Trena L.; Montgomery, Mark; Mechell, Sara; Arterbury, Kristin; Moore, Sherrie

    2012-01-01

    In 2007, a group of mathematics educators and researchers met to examine rational numbers and why children have such an issue with them. An extensive review of the literature on fractional understanding was conducted. The ideas in that literature were then consolidated into a theoretical framework for examining fractions. Once that theoretical…

  11. A Theoretical Framework for Organizing the Effect of the Internet on Cognitive Development

    Science.gov (United States)

    Johnson, Genevieve Marie

    2006-01-01

    The number of children and adolescents accessing the Internet as well as the amount of time online are steadily increasing. The most common online activities include playing video games, navigating web sites, and communicating via chat rooms, email, and instant messaging. A theoretical framework for understanding the effects of Internet use on…

  12. Harnessing Intellectual Property for Development: Some Thoughts on an Appropriate Theoretical Framework

    Directory of Open Access Journals (Sweden)

    Caroline Bongiwe Ncube

    2013-12-01

    Full Text Available This paper considers how an appropriate theoretical framework for Intellectual Property may be constructed. Such a framework would be the lens through which contested IP issues may be resolved and upon which national IP policy and legislation might be based. The paper begins by highlighting the inherent tensions in IP, which are caused by the various stakeholder interests that this body of law seeks to balance, and by the cross-cutting nature of IP. It contends that in order to more equitably balance the contesting rights of the creators and users, IP rights should be formulated and enforced so as to meet societal goals or serve public interest, be responsive to the economic environment, and take cognisance of the human rights claims of both creators and users. National socio-economic goals should inform such a framework in a way that ensures that IP is used as a means to achieve these goals and is not perceived as an end. This will require nuances in policy and legislation that meet the country's needs. In particular, as a developing country South Africa would do well to exploit available flexibilities in the various international IP agreements by which it is bound. Due regard also ought to be had to the users' need for affordable access to IP-protected goods in order that they may exercise the right to work and access to knowledge, as provided for by ss 22 and 16 of the Constitution respectively. Similarly, creators ought to be given due recognition, together with reasonable reward and remuneration for their efforts. This will be achieved through the creation of an IP system that provides protection that is compatible with the nature of the good being protected and the manner in which the creative process unfolds. Such protection should rely on registration systems are efficient, simplified and affordable. The accompanying enforcement system should be equally accessible, although the costs of enforcement would depend on the forum used to

  13. Thinking meta-theoretically about the role of internalization in the development of body dissatisfaction and body change behaviors.

    Science.gov (United States)

    Karazsia, Bryan T; van Dulmen, Manfred H M; Wong, Kendal; Crowther, Janis H

    2013-09-01

    Internalization of societal standards of physical attractiveness (i.e., internalization of the thin ideal for women and internalization of the mesomorphic ideal for men) is a widely studied and robust risk factor for body dissatisfaction and maladaptive body change behaviors. Substantial empirical research supports internalization as both a mediator and a moderator of the relation between societal influences and body dissatisfaction. In this paper, a primer on mediation and moderation is followed by a review of literature and discussion of the extent to which internalization can theoretically fulfill the roles of both mediation and moderation. The literature review revealed a stark contrast in research design (experimental versus non-experimental design) when alternate conceptualizations of internalization are adopted. A meta-theoretical, moderated mediation model is presented. This model integrates previous research and can inform future empirical and clinical endeavors. Copyright © 2013 Elsevier Ltd. All rights reserved.

  14. PREVIOUS SECOND TRIMESTER ABORTION

    African Journals Online (AJOL)

    PNLC

    PREVIOUS SECOND TRIMESTER ABORTION: A risk factor for third trimester uterine rupture in three ... for accurate diagnosis of uterine rupture. KEY WORDS: Induced second trimester abortion - Previous uterine surgery - Uterine rupture. ..... scarred uterus during second trimester misoprostol- induced labour for a missed ...

  15. Parenting around child snacking: development of a theoretically-guided, empirically informed conceptual model.

    Science.gov (United States)

    Davison, Kirsten K; Blake, Christine E; Blaine, Rachel E; Younginer, Nicholas A; Orloski, Alexandria; Hamtil, Heather A; Ganter, Claudia; Bruton, Yasmeen P; Vaughn, Amber E; Fisher, Jennifer O

    2015-09-17

    Snacking contributes to excessive energy intakes in children. Yet factors shaping child snacking are virtually unstudied. This study examines food parenting practices specific to child snacking among low-income caregivers. Semi-structured interviews were conducted in English or Spanish with 60 low-income caregivers of preschool-aged children (18 non-Hispanic white, 22 African American/Black, 20 Hispanic; 92% mothers). A structured interview guide was used to solicit caregivers' definitions of snacking and strategies they use to decide what, when and how much snack their child eats. Interviews were audio-recorded, transcribed verbatim and analyzed using an iterative theory-based and grounded approach. A conceptual model of food parenting specific to child snacking was developed to summarize the findings and inform future research. Caregivers' descriptions of food parenting practices specific to child snacking were consistent with previous models of food parenting developed based on expert opinion [1, 2]. A few noteworthy differences however emerged. More than half of participants mentioned permissive feeding approaches (e.g., my child is the boss when it comes to snacks). As a result, permissive feeding was included as a higher order feeding dimension in the resulting model. In addition, a number of novel feeding approaches specific to child snacking emerged including child-centered provision of snacks (i.e., responding to a child's hunger cues when making decisions about snacks), parent unilateral decision making (i.e., making decisions about a child's snacks without any input from the child), and excessive monitoring of snacks (i.e., monitoring all snacks provided to and consumed by the child). The resulting conceptual model includes four higher order feeding dimensions including autonomy support, coercive control, structure and permissiveness and 20 sub-dimensions. This study formulates a language around food parenting practices specific to child snacking

  16. Ameloblastic fibroma: a stage in the development of a hamartomatous odontoma or a true neoplasm? Critical analysis of 162 previously reported cases plus 10 new cases.

    Science.gov (United States)

    Buchner, Amos; Vered, Marilena

    2013-11-01

    To analyze neoplastic and hamartomatous variants of ameloblastic fibromas (AFs). Analysis of 172 cases (162 previously reported, 10 new). AF emerged as a lesion primarily of children and adolescents (mean age, 14.9 years), with about 80% diagnosed when odontogenesis is completed (age, 22 years are considered true neoplasms, while those in younger patients may be either true neoplasms or odontomas in early stages of development. Although the histopathology of hamartomatous and neoplastic variants of AF are indistinguishable, clinical and radiologic features can be of some help to distinguish between them. Asymptomatic small unilocular lesions with no or minimal bone expansion in young individuals are likely to be developing odontomas, and large, expansile lesions with extensive bone destruction are neoplasms. Copyright © 2013 Elsevier Inc. All rights reserved.

  17. Interpreting "Personality" Taxonomies: Why Previous Models Cannot Capture Individual-Specific Experiencing, Behaviour, Functioning and Development. Major Taxonomic Tasks Still Lay Ahead.

    Science.gov (United States)

    Uher, Jana

    2015-12-01

    As science seeks to make generalisations, a science of individual peculiarities encounters intricate challenges. This article explores these challenges by applying the Transdisciplinary Philosophy-of-Science Paradigm for Research on Individuals (TPS-Paradigm) and by exploring taxonomic "personality" research as an example. Analyses of researchers' interpretations of the taxonomic "personality" models, constructs and data that have been generated in the field reveal widespread erroneous assumptions about the abilities of previous methodologies to appropriately represent individual-specificity in the targeted phenomena. These assumptions, rooted in everyday thinking, fail to consider that individual-specificity and others' minds cannot be directly perceived, that abstract descriptions cannot serve as causal explanations, that between-individual structures cannot be isomorphic to within-individual structures, and that knowledge of compositional structures cannot explain the process structures of their functioning and development. These erroneous assumptions and serious methodological deficiencies in widely used standardised questionnaires have effectively prevented psychologists from establishing taxonomies that can comprehensively model individual-specificity in most of the kinds of phenomena explored as "personality", especially in experiencing and behaviour and in individuals' functioning and development. Contrary to previous assumptions, it is not universal models but rather different kinds of taxonomic models that are required for each of the different kinds of phenomena, variations and structures that are commonly conceived of as "personality". Consequently, to comprehensively explore individual-specificity, researchers have to apply a portfolio of complementary methodologies and develop different kinds of taxonomies, most of which have yet to be developed. Closing, the article derives some meta-desiderata for future research on individuals' "personality".

  18. Social Sciences Methodology Development in Latin America: Theoretical Positions and Social Projects

    Directory of Open Access Journals (Sweden)

    Fernando Cortés

    2014-01-01

    Full Text Available The methodology of the social sciences is often conceptualized as a disciplinary field equipped with its own internal logic. This article shows that in spite of this, when examining methodologicaldisputes (and theoretical as well that have taken place in Latin America in the last sixty years shows that have been influenced by political struggles to impose alternative social projects. Politics, theory and methodology have been closely intertwined. It is argued that until the late sixties methodology was equivalent to survey techniques. In the seventies and part of the eightiesthere was a concern to understand the structural change with a strong Marxist epistemology accent. Following the crisis of the eighties and the consequent budgetary restrictions on academicresearch there has been a tendency to limit the methodology to a set of research tools and techniques, and discuss concepts detached form their theoretical bodies, hiding the diversity of approaches and policy proposals.

  19. A Theoretical Approach to Financial Therapy: The Development of the Ford Financial Empowerment Model

    Directory of Open Access Journals (Sweden)

    Kristy L. Archuleta

    2012-01-01

    Full Text Available The purpose of this paper is to introduce an integrative approach to working with clients experiencing problems related to financial disempowerment. The multi-phase model integrates three theoretically-driven psychotherapy approaches, including cognitive behavioral, narrative, and Virginia Satir’s experiential therapies, and financial counseling techniques to increase one’s sense of financial empowerment. A case study is included to demonstrate the applicability and effectiveness of the model.

  20. Theoretical and Computational Studies of Rare Earth Substitutes: A Test-bed for Accelerated Materials Development

    Energy Technology Data Exchange (ETDEWEB)

    Benedict, Lorin X. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-10-26

    Hard permanent magnets in wide use typically involve expensive Rare Earth elements. In this effort, we investigated candidate permanent magnet materials which contain no Rare Earths, while simultaneously exploring improvements in theoretical methodology which enable the better prediction of magnetic properties relevant for the future design and optimization of permanent magnets. This included a detailed study of magnetocrystalline anisotropy energies, and the use of advanced simulation tools to better describe magnetic properties at elevated temperatures.

  1. Using the theoretical domains framework to guide the development of a self-management program for individuals with spinal cord injury: Results from a national stakeholder advisory group.

    Science.gov (United States)

    Munce, Sarah E P; Allin, Sonya; Wolfe, Dalton L; Anzai, Karen; Linassi, Gary; Noonan, Vanessa K; Jaglal, Susan B

    2017-11-01

    To determine the implementation considerations for a targeted self-management program for individuals with spinal cord injury (SCI) from the perspective of a national stakeholder advisory group using the Theoretical Domains Framework (TDF) as a guide. Qualitative descriptive approach. Two focus groups held at the 6 th National Spinal Cord Injury Conference (October 2-4 th , 2014) in Toronto, Ontario, Canada. A total of 25 stakeholders from across Canada participated in focus groups or "brainstorming sessions". The stakeholders included 5 clinicians, 14 researchers, 3 policy makers, and 3 individuals with SCI. Not applicable. Not applicable. All 14 theoretical domains were identified in the brainstorming sessions. No new themes or domains were identified. The need to consider the theoretical domains of Knowledge, Skills, Reinforcement, Intentions, Goals (e.g. the readiness of the individual with SCI), Environmental Context and Resources (e.g. considerations for governance and ownership of the program and a business model for sustainability), as well as Social Influences (e.g. issues of privacy and security in the context of on-line delivery) was identified. The current study provides complementary results to our previous series of studies on the implementation considerations for the development of a targeted self-management program for individuals with SCI by emphasizing the health care professional/health policy perspective. It is anticipated that such a program could not only reduce secondary complications and subsequent inappropriate health care use but it may also improve the quality of life for individuals with SCI and their caregivers.

  2. Theoretical chemistry

    International Nuclear Information System (INIS)

    Anon.

    1975-01-01

    Work in theoretical chemistry was organized under the following topics: scattering theory and dynamics (elastic scattering of the rare gas hydrides, inelastic scattering in Li + H 2 , statistical theory for bimolecular collisions, model study of dissociative scattering, comparative study of elastic scattering computational methods), studies of atmospheric diatomic and triatomic species, structure and spectra of diatomic molecules, the evaluation of van der Waals forces, potential energy surfaces and structure and dynamics, calculation of molecular polarizabilities, and development of theoretical techniques and computing systems. Spectroscopic parameters are tabulated for NO 2 , N 2 O, H 2 O + , VH, and NH. Self-consistent-field wave functions were computed for He 2 in two-center and three-center bases. Rare gas hydride intermolecular potentials are shown. (9 figures, 14 tables) (U.S.)

  3. CLUSTER DEVELOPMENT OF ECONOMY OF REGION: THEORETICAL OPPORTUNITIES AND PRACTICAL EXPERIENCE

    Directory of Open Access Journals (Sweden)

    O.A. Romanova

    2007-12-01

    Full Text Available In clause theoretical approaches to formation industrial cluster кластеров in regions of the Russian Federation are considered. Оn the basis of which the methodological scheme of the project of cluster creation is offered. On an example hi-tech cluster “Titanic valley”, created in Sverdlovsk area, basic elements of its formation reveal: a substantiation of use cluster forms of the organization of business, an estimation of preconditions of creation, the description of the cluster purposes, problems, structures; mechanism of management and stages of realization of the project of cluster creation, measures of the state support.

  4. A theoretical model for developing core capabilities from an intellectual capital perspective (Part 1

    Directory of Open Access Journals (Sweden)

    Marius Ungerer

    2005-10-01

    Full Text Available One of the basic assumptions associated with the theoretical model as described in this article is that an organisation (a system can acquire capabilities through intentional strategic and operational initiatives. This intentional capability-building process also implies that the organisation intends to use these capabilities in a constructive way to increase competitive advantage for the firm. Opsomming Een van die basiese aannames wat geassosieer word met die teoretiese model wat in hierdie artikel beskryf word, is dat ’n organisasie (’n stelsel vermoëns deur doelgerigte strategiese en operasionele inisiatiewe kan bekom. Hierdie voorgenome vermoë-skeppingsproses, veronderstel ook dat die onderneming daarop ingestel is om hierdie vermoëns op ’n konstruktiewe wyse te benut om die mededingende voordeel van die organisasie te verhoog.

  5. A theoretical model for developing core capabilities from an intellectual capital perspective (Part 2

    Directory of Open Access Journals (Sweden)

    Marius Ungerer

    2005-10-01

    Full Text Available One of the basic assumptions associated with the theoretical model as described in this article is that an organization (a system can acquire capabilities through intentional strategic and operational initiatives. This intentional capability-building process also implies that the organisation intends to use these capabilities in a constructive way to increase competitive advantage for the firm. Opsomming Een van die basiese aannames wat geassosieer word met die teoretiese model wat in hierdie artikel beskryf word, is dat ’n organisasie (’n stelsel vermoëns deur doelgerigte strategiese en operasionele inisiatiewe kan bekom. Hierdie voorgenome vermoë-skeppingsproses, veronderstel ook dat die onderneming daarop ingestel is om hierdie vermoëns op ’n konstruktiewe wyse te benut om die mededingende voordeel van die organisasie te verhoog.

  6. Signal detection theory with finite mixture distributions: theoretical developments with applications to recognition memory.

    Science.gov (United States)

    DeCarlo, Lawrence T

    2002-10-01

    An extension of signal detection theory (SDT) that incorporates mixtures of the underlying distributions is presented. The mixtures can be motivated by the idea that a presentation of a signal shifts the location of an underlying distribution only if the observer is attending to the signal; otherwise, the distribution is not shifted or is only partially shifted. Thus, trials with a signal presentation consist of a mixture of 2 (or more) latent classes of trials. Mixture SDT provides a general theoretical framework that offers a new perspective on a number of findings. For example, mixture SDT offers an alternative to the unequal variance signal detection model; it can also account for nonlinear normal receiver operating characteristic curves, as found in recent research.

  7. Developing theory-informed behaviour change interventions to implement evidence into practice: a systematic approach using the Theoretical Domains Framework.

    Science.gov (United States)

    French, Simon D; Green, Sally E; O'Connor, Denise A; McKenzie, Joanne E; Francis, Jill J; Michie, Susan; Buchbinder, Rachelle; Schattner, Peter; Spike, Neil; Grimshaw, Jeremy M

    2012-04-24

    There is little systematic operational guidance about how best to develop complex interventions to reduce the gap between practice and evidence. This article is one in a Series of articles documenting the development and use of the Theoretical Domains Framework (TDF) to advance the science of implementation research. The intervention was developed considering three main components: theory, evidence, and practical issues. We used a four-step approach, consisting of guiding questions, to direct the choice of the most appropriate components of an implementation intervention: Who needs to do what, differently? Using a theoretical framework, which barriers and enablers need to be addressed? Which intervention components (behaviour change techniques and mode(s) of delivery) could overcome the modifiable barriers and enhance the enablers? And how can behaviour change be measured and understood? A complex implementation intervention was designed that aimed to improve acute low back pain management in primary care. We used the TDF to identify the barriers and enablers to the uptake of evidence into practice and to guide the choice of intervention components. These components were then combined into a cohesive intervention. The intervention was delivered via two facilitated interactive small group workshops. We also produced a DVD to distribute to all participants in the intervention group. We chose outcome measures in order to assess the mediating mechanisms of behaviour change. We have illustrated a four-step systematic method for developing an intervention designed to change clinical practice based on a theoretical framework. The method of development provides a systematic framework that could be used by others developing complex implementation interventions. While this framework should be iteratively adjusted and refined to suit other contexts and settings, we believe that the four-step process should be maintained as the primary framework to guide researchers through a

  8. Laparoscopy After Previous Laparotomy

    Directory of Open Access Journals (Sweden)

    Zulfo Godinjak

    2006-11-01

    Full Text Available Following the abdominal surgery, extensive adhesions often occur and they can cause difficulties during laparoscopic operations. However, previous laparotomy is not considered to be a contraindication for laparoscopy. The aim of this study is to present that an insertion of Veres needle in the region of umbilicus is a safe method for creating a pneumoperitoneum for laparoscopic operations after previous laparotomy. In the last three years, we have performed 144 laparoscopic operations in patients that previously underwent one or two laparotomies. Pathology of digestive system, genital organs, Cesarean Section or abdominal war injuries were the most common causes of previouslaparotomy. During those operations or during entering into abdominal cavity we have not experienced any complications, while in 7 patients we performed conversion to laparotomy following the diagnostic laparoscopy. In all patients an insertion of Veres needle and trocar insertion in the umbilical region was performed, namely a technique of closed laparoscopy. Not even in one patient adhesions in the region of umbilicus were found, and no abdominal organs were injured.

  9. Robust integration schemes for generalized viscoplasticity with internal-state variables. Part 1: Theoretical developments and applications

    Science.gov (United States)

    Saleeb, Atef F.; Li, Wei

    1995-01-01

    This two-part report is concerned with the development of a general framework for the implicit time-stepping integrators for the flow and evolution equations in generalized viscoplastic models. The primary goal is to present a complete theoretical formulation, and to address in detail the algorithmic and numerical analysis aspects involved in its finite element implementation, as well as to critically assess the numerical performance of the developed schemes in a comprehensive set of test cases. On the theoretical side, the general framework is developed on the basis of the unconditionally-stable, backward-Euler difference scheme as a starting point. Its mathematical structure is of sufficient generality to allow a unified treatment of different classes of viscoplastic models with internal variables. In particular, two specific models of this type, which are representative of the present start-of-art in metal viscoplasticity, are considered in applications reported here; i.e., fully associative (GVIPS) and non-associative (NAV) models. The matrix forms developed for both these models are directly applicable for both initially isotropic and anisotropic materials, in general (three-dimensional) situations as well as subspace applications (i.e., plane stress/strain, axisymmetric, generalized plane stress in shells). On the computational side, issues related to efficiency and robustness are emphasized in developing the (local) interative algorithm. In particular, closed-form expressions for residual vectors and (consistent) material tangent stiffness arrays are given explicitly for both GVIPS and NAV models, with their maximum sizes 'optimized' to depend only on the number of independent stress components (but independent of the number of viscoplastic internal state parameters). Significant robustness of the local iterative solution is provided by complementing the basic Newton-Raphson scheme with a line-search strategy for convergence. In the present first part of the

  10. Developing a theoretical model to investigate thermal performance of a thin membrane heat-pipe solar collector

    International Nuclear Information System (INIS)

    Riffat, S.B.; Zhao, X.; Doherty, P.S.

    2005-01-01

    A thin membrane heat-pipe solar collector was designed and constructed to allow heat from solar radiation to be collected at a relatively high efficiency while keeping the capital cost low. A theoretical model incorporating a set of heat balance equations was developed to analyse heat transfer processes occurring in separate regions of the collector, i.e., the top cover, absorber and condenser/manifold areas, and examine their relationship. The thermal performance of the collector was investigated using the theoretical model. The modelling predictions were validated using the experimental data from a referred source. The test efficiency was found to be in the range 40-70%, which is a bitter lower than the values predicted by modelling. The factors influencing these results were investigated

  11. THE THEORETICAL AND METHODICAL APPROACH TO AN ASSESSMENT OF A LEVEL OF DEVELOPMENT OF THE ENTERPRISE IN CONDITIONS OF GLOBALIZATION

    Directory of Open Access Journals (Sweden)

    Tatiana Shved

    2016-11-01

    Full Text Available The subject of this article is theoretical, methodical and practical aspects of enterprise development in conditions of globalization. The purpose of this research is to provide theoretical and methodical approach to an assessment of a level of development of the enterprise, which is based on the relationship between the factors and influence, illustrating the effect of the internal and external environment of enterprises functioning, and indicates the level of development of the enterprise. Methodology. Theoretical basis of the study was the examination and rethinking of the main achievements of world and domestic science on the development of enterprises. To achieve the objectives of the research following methods were used: systemic and structural analysis for the formation of methodical approaches to the selection of the factors, influencing the development of enterprises; abstract and logical – for the formulation of conclusions and proposals; the method of valuation and expert assessments to the implementation of the proposed theoretical and methodical approach to an assessment of a level of development of the enterprise in conditions of globalization. Results of the research is the proposed theoretical and methodical to an assessment of a level of development of the enterprise in conditions of globalization, which is associated with the idea of development of the enterprise as a system with inputs–factors, influencing on the development , and outputs – indicators of the level of enterprise development within these factors. So, the chosen factors – resources, financial-economic activity, innovation and investment activities, competition, government influence, and foreign trade. Indicators that express these factors, are capital productivity, labour productivity, material efficiency within the first factor; the profitability of the activity, the coefficient of current assets, the total liquidity coefficient, financial stability

  12. Rural crime in developing countries: Theoretical framework, empirical findings, research needs

    OpenAIRE

    Grote, Ulrike; Neubacher, Frank

    2016-01-01

    Anecdotal evidence and selected information from the International Crime Victims Survey suggest that crime is higher in developing countries than in developed countries and that there are regionally big differences. Explanations and solutions to the persistence and prevalence of rural crime in many developing countries are needed as rural crime undermines sustainable development to a large extent and may even affect social cohesiveness in rural communities. This discussion paper therefore cal...

  13. THE QUALITY OF HUMAN RESOURCES – A REQUEST FOR HOTEL INDUSTRY DEVELOPMENT. A THEORETICAL APPROACH

    OpenAIRE

    Aruștei Carmen Claudia

    2013-01-01

    In this article we focus on the importance of human resource quality from hotel industry in obtaining quality services and further more in obtaining hotel industry development. We address this issue due to the fact that, usually, when talking about tourism or hotel industry development, the literature in the field offers macro solutions like, infrastructure development, service/product development and/or improving service quality. We consider that a micro approach is also important and from t...

  14. Theoretical and Ideological Framing: Relative Change Theory and Its Application to Humanitarianism in Education Development

    Science.gov (United States)

    Omwami, Edith Mukudi

    2012-01-01

    This paper proposes relative change theory as an alternative to the common theories used in examining education sector development in the developing regions of the world. The theory specifically seeks to explain the persisting limited impact of development aid efforts. It departs from the Marxist informed dependency and world-systems approach in…

  15. An Alternative Theoretical Model: Examining Psychosocial Identity Development of International Students in the United States

    Science.gov (United States)

    Kim, Eunyoung

    2012-01-01

    Despite the plethora of college student identity development research, very little attention has been paid to the identity formation of international students. Rather than adopting existing identity theories in college student development, this exploratory qualitative study proposes a new psychosocial identity development model for international…

  16. THEORETICAL FOUNDATIONS OF SUSTAINABLE DEVELOPMENT OF THE AGRI-FOOD SPHERE

    Directory of Open Access Journals (Sweden)

    V. Samofatova

    2017-10-01

    Full Text Available The article highlights the historical preconditions and principles of sustainable development of theagri-food sphere. The analysis of the evolution of the categorical content of sustainable development iscarried out. It has been noted that the main ideology of sustainable development is the integration andharmonization of the ecological, economic and social spheres of society. It is shown that the concept ofsustainable development has an interdisciplinary character, so it should be considered in many aspects andstudied from different angles. The basic advantages of sustainable development for the agri-food sphere areoutlined.

  17. Developing TheoreticalMethodological Approaches to Assessment of Export Potential of Ukrainian Enterprises

    Directory of Open Access Journals (Sweden)

    Matyushenko Igor Yu.

    2016-02-01

    Full Text Available The article is aimed at studying the existing theoretical-methodological approaches to the analysis and assessment of export potential. The opinions by scientists regarding the disclosure of the categorial content of the concept of «export potential» have been considered, an own definition of the indicated economic category has been suggested. The main types of analytical procedures for assessment have been classified, some authorial methodical approaches to determine the level of export potential have been analyzed. The export potential of a hypothetical enterprise has been calculated by the selected methodologies of assessment. The urgency of improving and refining existing methods to implement more detailed and quantitative analysis has been substantiated. It has been suggested to implement a prognosis assessment of export potential of enterprises by combining the results of several methodologies in the aggregate indicator of export potential efficiency. A prognosis model for the dynamics of export potential of a hypothetical enterprise has been built, value of the aggregate indicator has been calculated on the basis of three selected valuation methodologies.

  18. THEORETICAL AND PRACTICAL ASPECTS OF EXPLORATION THE INNOVATIVE ACTIVE ORGANIZATIONS’ POTENTIAL OF A BALANCED DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    A. I. Khorev

    2014-01-01

    Full Text Available Summary. The concept of "potential" put into practice as a method of study permits the uncertainty associated with the absence of any information about the conditions of functioning in the future. Critical importance is the study of the potential development of an economic entity. S.I. Ozhegov noted that development - natural process changes, the transition from one state to another, more perfect, the transition from an old qualitative state to a new, simple to complex, from lowest to highest. The essential content of balanced development potential based on study of the relationship concepts of «potential of the company», «the development of an economic entity», «balanced development» have been considered in the article. Particular attention is paid to the specifics of development of innovation-active organizations. Conclusion has been made that to the timely detection of potential balanced development need a comprehensive analysis of the conditions and factors functioning economic entity, which have been grouped into three groups: factors of macro, meso and micro level. A comprehensive study of the factors determining the future development of innovation-active enterprises has been conducted in the article. It is shown that the effectiveness of the balanced development of innovation-active organizations in general, and the object of research , in particular , is determined by such factors as the structure and needs of the market , the resource base of innovative development , effective management system development, innovation activity . The authors believe that the inclusion of the multifaceted impact of factors will allow innovative active organizations to build a control system which allows more accurately predict the perspective direction of their future development.

  19. Theoretical and Practical Aspects of Logistic Quality Management System Documentation Development Process

    Directory of Open Access Journals (Sweden)

    Linas Šaulinskas

    2013-12-01

    Full Text Available This paper addresses aspects of logistics quality management system documentation development and suggests models for quality management system documentation development, documentation hierarchical systems and authorization approval. It also identifies logistic processes and a responsibilities model and a detailed document development and approval process that can be practically applied. Our results are based upon an analysis of advanced Lithuanian and foreign corporate business practices, a review of current literature and recommendations for quality management system standards.

  20. Theoretic-methodological approaches to determine the content and classification of innovation-investment development strategies

    Directory of Open Access Journals (Sweden)

    Gerashenkova Tatyana

    2016-01-01

    Full Text Available The article states the necessity to form an innovation-investment strategy of enterprise development, offers an approach to its classification, determines the place of this strategy in a corporatewide strategy, gives the methodology of formation and the realization form of the innovation-investment development strategy.

  1. Development and performance of self-managing work teams : a theoretical and empirical examination

    NARCIS (Netherlands)

    Kuipers, B.J.; Stoker, J.I.

    2009-01-01

    Several theories have been developed that prescribe the team development of self-managing work teams (SMWTs). Some of these have led to models with successive linear developmental phases. However, both the theory and the empirical data show little support for these models. Based on an extensive

  2. A Theoretical Framework for Integrating Creativity Development into Curriculum: The Case of a Korean Engineering School

    Science.gov (United States)

    Lim, Cheolil; Lee, Jihyun; Lee, Sunhee

    2014-01-01

    Existing approaches to developing creativity rely on the sporadic teaching of creative thinking techniques or the engagement of learners in a creativity-promoting environment. Such methods cannot develop students' creativity as fully as a multilateral approach that integrates creativity throughout a curriculum. The purpose of this study was to…

  3. Facilitating organizational development through action learning : Some practical and theoretical considerations

    NARCIS (Netherlands)

    Donnenberg, O.; De Loo, I.G.M.

    2004-01-01

    Action learning programmes are supposed to result in both personal and organizational development. However, organizational development can be negligible because, as the term implies, a connection must be secured between what has been learned by action learning participants and other members of an

  4. Religious Identity Development of Adolescents in Religious Affiliated Schools. A Theoretical Foundation for Empirical Research

    Science.gov (United States)

    Bertram-Troost, Gerdien D.; de Roos, Simone; Miedema, Siebren

    2006-01-01

    The question, how religious affiliated schools for secondary education shape religious education and what effects this education has on the religious identity development of pupils, is relevant in a time when the position of religious affiliated schools is highly disputable. In earlier empirical research on religious identity development of…

  5. THE QUALITY OF HUMAN RESOURCES – A REQUEST FOR HOTEL INDUSTRY DEVELOPMENT. A THEORETICAL APPROACH

    Directory of Open Access Journals (Sweden)

    Aruștei Carmen Claudia

    2013-04-01

    Full Text Available In this article we focus on the importance of human resource quality from hotel industry in obtaining quality services and further more in obtaining hotel industry development. We address this issue due to the fact that, usually, when talking about tourism or hotel industry development, the literature in the field offers macro solutions like, infrastructure development, service/product development and/or improving service quality. We consider that a micro approach is also important and from this perspective, we emphasis the role of human resource quality for industry development. The quality of human resources, as a dimension of service quality was not detailed extensively by the literature in the field but we found it relevant for hotel industry development, as this industry it is a service industry, and as Ritz-Carlton Company’s motto say “service comes only from people”. In this article we focus on the importance of human resource quality from hotel industry in obtaining quality services and further more in obtaining hotel industry development. We address this issue due to the fact that, usually, when talking about tourism or hotel industry development, the literature in the field offers macro solutions like, infrastructure development, service/product development and/or improving service quality. We consider that a micro approach is also important and from this perspective, we emphasis the role of human resource quality for industry development. The quality of human resources, as a dimension of service quality was not detailed extensively by the literature in the field but we found it relevant for hotel industry development, as this industry it is a service industry, and as Ritz-Carlton Company’s motto say “service comes only from people”. In this article we focus on the importance of human resource quality from hotel industry in obtaining quality services and further more in obtaining hotel industry development. We address this

  6. Theoretical background to orient the universitary projects management to local development.

    Directory of Open Access Journals (Sweden)

    Naybi Salas Vargas

    2012-03-01

    Full Text Available Nowadays the resources administration is a problem to be solved, and is remarkable the universities role to orient knowledge to the expected local development. With the communion of the university and the main decisors at local and territorial contexts, it is evident the development of alternatives that diminish existing breaches in the known projects management Anytime the projects development context is diverse and multicultural, all the knowledge elements that provide new forms are useful experiences without point out unique recipees. The development dynamic evolution in the territories continues being an urgency for human survival.The projects management, notable in international cooperation actions as the international dimension of the extensionist activity and in the science contributions, are reduced in their foccus to the promotion of local development, what points out the need to orient the universitary processes to the territorial development of the province, in particular the projects management. The objective of this work is to offer a guidance of foundations that allow to orient the management of universtary projects to local development.

  7. Theoretical and Empirical Bases of Character Development in Adolescence: A View of the Issues.

    Science.gov (United States)

    Seider, Scott; Jayawickreme, Eranda; Lerner, Richard M

    2017-06-01

    Traditional models of character development have conceptualized character as a set of psychological attributes that motivate or enable individuals to function as competent moral agents. In this special section, we present seven articles, including two commentaries, that seek to make innovative conceptual and methodological contributions to traditional understandings in the extant scholarship of character and character development in youth. In the introduction to this special section, we provide overviews of these contributions, and discuss the implications of these articles both to the current scholarship and to applications aimed at promoting character and positive youth development.

  8. Theoretical development in the context of nursing-The hidden epistemology of nursing theory.

    Science.gov (United States)

    Hoeck, Bente; Delmar, Charlotte

    2018-01-01

    This article is about nursing theories, the development of nursing knowledge and the underlying, hidden epistemology. The current technical-economical rationality in society and health care calls for a specific kind of knowledge based on a traditional Western, Socratic view of science. This has an immense influence on the development of nursing knowledge. The purpose of the article was therefore to discuss the hidden epistemology of nursing knowledge and theories seen in a broad historical context and point to an alternative epistemology for a future context. It is a question about which nursing theories and what nursing knowledge should be developed in order to benefit patients and relatives of the future. We suggest that future knowledge development in nursing be developed in an interchange between theory and practice and guided by philosophy like a kind of pendulum where all three elements are treated as equals. We suggest a framework for the development of nursing knowledge based on a caring-ethical practice, a theory on life phenomena in suffering and relationship-based nursing, and thereby, we may be able to help patients to be cured, to recover, to be alleviated or comforted when suffering. © 2017 John Wiley & Sons Ltd.

  9. The Development Of A Theoretical Lean Culture Causal Framework To Support The Effective Implementation Of Lean In Automotive Component Manufacturers

    Directory of Open Access Journals (Sweden)

    Van der Merwe, Karl Robert

    2014-05-01

    Full Text Available Although it is generally accepted that lean manufacturing improves operational performance, many organisations are struggling to adapt to the lean philosophy. The purpose of this study is to contribute to a more effective strategy for implementing the lean manufacturing improvement philosophy. The study sets out both to integrate well-researched findings and theories related to generic organisational culture with more recent research and experience related to lean culture, and to examine the role that culture plays in the effective implementation of lean manufacturing principles and techniques. The ultimate aim of this exercise is to develop a theoretical lean culture causal framework.

  10. Theoretical approaches to the construction of innovative investment model of raw-mineral complex development

    Directory of Open Access Journals (Sweden)

    Sergey Mikhaylovich Shvets

    2012-06-01

    Full Text Available This paper analyzes investment and innovative model of development of the mineral resources sector in Russia. It is proved that the emphasis in today's economy is made on the development of both raw materials industries, most of which are associated with the extraction and primary processing of renewable natural resources, and processing industries, which leads to an increase in national wealth. The formation of the demand for investment in mineral resources under the influence of the complex growth of net investment income is caused by technological progress. The mechanism of action of the investment multiplier and accelerator, linked to the autonomous investment, influencing thecommissioning of mineral deposits, providing a subsequent impact on the associated industries is considered in details. The author has proposed to introduce a macroeconomic model of subsoil group of indicators characterizing the volume of autonomous investments in the development of the mineral resources sector and related industries.

  11. THEORETICAL AND PRACTICAL ASPECTS OF MONITORING OF REGION’S SOCIO-ECONOMIC DEVELOPMENT PROCESSES:

    Directory of Open Access Journals (Sweden)

    Valentyna Yakubiv

    2017-03-01

    Full Text Available The article defines the nature of socio-economic development processes monitoring in a region on the basis of systematization of scientific works on economics. The terms of monitoring introduction into the processes of socio-economic development of a region are defined. The difference between monitoring and standard statistic technology is explained. The fact that socio-economic processes monitoring is primarily directed at collection, examination and preparation of information for making and analyzing of economic decisions at different management levels is proved. The indicators by the direction “renewable energy and energy efficiency”, which are evaluated in the process of monitoring, are outlined. Major tasks of monitoring are defined and principles of its information basis forming are determined. Key words: decentralization, information basis, renewable energy, monitoring, region, development, socio-economic processes.

  12. Theoretical and practical considerations for the development of online international collaborative learning for dental hygiene students.

    Science.gov (United States)

    Gussy, M G; Knevel, R J M; Sigurdson, V; Karlberg, G

    2006-08-01

    Globalization and concurrent development in computer and communication technology has increased interest in collaborative online teaching and learning for students in higher education institutions. Many institutions and teachers have introduced computer-supported programmes in areas including dental hygiene. The potential for the use of this technology is exciting; however, its introduction should be careful and considered. We suggest that educators wanting to introduce computer-supported programmes make explicit their pedagogical principles and then select technologies that support and exploit these principles. This paper describes this process as it was applied to the development of an international web-based collaborative learning programme for dental hygiene students.

  13. Theoretical and methodical going near development of coordinating capabilities of young people

    Directory of Open Access Journals (Sweden)

    Kolumbet A.N.

    2012-04-01

    Full Text Available An estimation over of positions of conception of coordination and coordinating capabilities is brought in the field of theory of physical education. Data of modern scientific literature on development and perfection of coordinating capabilities are considered. It is shown approaches according to classifications. The further ways of development of motive coordinations of young people are certain. An analysis over is brought 177 publications of domestic and foreign scientists and researchers. Find data allow to establish that now there is enough accumulated material which allows to step over the traditional aspects of pedagogical process of mastering the man of motive abilities and skills

  14. Theoretical Analysis of Occupational Development Aspects from the Viewpoint of the Personality's Constant Individual Traits Concept

    Science.gov (United States)

    Wilsz, Jolanta

    2015-01-01

    The concept of personality's constant individual traits and its significance, as well as implications for problems connected with choosing an occupation have been presented in the paper. Selected theories of occupational development have been analyzed from the concept viewpoint and certain traits of occupational personality presented by authors of…

  15. How Teachers Become Leaders: An Internationally Validated Theoretical Model of Teacher Leadership Development

    Science.gov (United States)

    Poekert, Philip; Alexandrou, Alex; Shannon, Darbianne

    2016-01-01

    Teacher leadership is increasingly being touted as a practical response to guide teacher learning in school improvement and policy reform efforts. However, the field of research on teacher leadership in relation to post-compulsory educational development has been and remains largely atheoretical to date. This empirical study proposes a grounded…

  16. Participatory and Anticipatory Stages of Mathematical Concept Learning: Further Empirical and Theoretical Development

    Science.gov (United States)

    Simon, Martin A.; Placa, Nicora; Avitzur, Arnon

    2016-01-01

    Tzur and Simon (2004) postulated 2 stages of development in learning a mathematical concept: participatory and anticipatory. The authors discuss the affordances for research of this stage distinction related to data analysis, task design, and assessment as demonstrated in a 2-year teaching experiment.

  17. Agglomeration, Innovation and Regional Development: Theoretical Perspectives and Meta-Analysis

    NARCIS (Netherlands)

    Groot, de Henri L.F.; Poot, Jacques; Smit, Martijn J.

    2007-01-01

    Innovation and technological change are central to the quest for regional development. In the globally-connected knowledge-driven economy, the relevance of agglomeration forces that rely on proximity continues to increase, paradoxically despite declining real costs of information, communication and

  18. Teaching Elementary-Age Youth Catching Skills Using Theoretically Based Motor-Development Strategies

    Science.gov (United States)

    Drost, Daniel K.; Brown, Kyle; Wirth, Christopher K.; Greska, Eric K.

    2015-01-01

    Participating in general physical activity during childhood may not be the strongest predictor of lifetime physical activity. Children must develop motivation to participate in physically active endeavors and become excited about being active. These feelings toward physical activity may be best obtained by teaching with a more deliberate emphasis…

  19. Molecular and Cellular Quantitative Microscopy: theoretical investigations, technological developments and applications to neurobiology

    NARCIS (Netherlands)

    Esposito, Alessandro

    2006-01-01

    This PhD project aims at the development and evaluation of microscopy techniques for the quantitative detection of molecular interactions and cellular features. The primarily investigated techniques are Fαrster Resonance Energy Transfer imaging and Fluorescence Lifetime Imaging Microscopy. These

  20. Developing Young Adolescents' Self-Regulation by Means of Formative Assessment: A Theoretical Perspective

    Science.gov (United States)

    Meusen-Beekman, Kelly D.; Joosten-ten Brinke, Desirée; Boshuizen, Henny P. A.

    2015-01-01

    Fostering self-regulated learning (SRL) has become increasingly important at various educational levels. Most studies on SRL have been conducted in higher education. The present literature study aims toward understanding self-regulation processes of students in primary and secondary education. We explored the development of young students'…

  1. Some theoretical and practical aspects of special relevance to developing countries

    International Nuclear Information System (INIS)

    Krymm, R.

    1975-01-01

    Whenever there is justification for including favourable financing terms in the economic comparison of nuclear and fossil fuel alternatives, the competitive position of nuclear stations may be substantially improved. The conditions for the validity of such inclusion are, however, seldom fully fulfilled since they boil down to the assumption that more loans at preferential rates will be available for nuclear power than for fossil fuel-fired stations. They may, however, be approximated for selected cases at a certain stage of the nuclear industry development. When a realistic appraisal of the situation indicates that these conditions are fully or even partially met, there is every reason for developing countries to avail themselves of the advantages involved and to estimate these advantages by including financing terms in the economic analysis of alternative costs. (orig.) [de

  2. The New Community Policing: Developing a Partnership-Based Theoretical Foundation

    Directory of Open Access Journals (Sweden)

    Adam J McKee

    2016-10-01

    Full Text Available This paper presents a Partnership Model of Community Policing based on Partnership concepts developed by Riane Eisler and undergirded by Cultural Transformation Theory as a guiding principle (1987, 2010, 2013. This model is more reflective of the daily lived experiences of community police officers. It is culturally relevant and based on the whole of the police officer’s relationship with the community within the context in which the interactions occur. This "New Community Policing" is an extension of Riane Eisler’s Cultural Transformation Theory and is an attempt to answer her call for a movement towards a partnership model of social organization. Ultimately, "8 Pillars of the New Community Policing" are developed to aid in defining and implementing community policing.

  3. Theoretical Aspects of Social and Economic Development of Municipalities Management System on the Example of Moscow

    Directory of Open Access Journals (Sweden)

    Ruslan I. Zakharkin

    2016-09-01

    Full Text Available In this article basic provisions of system of local self-government, the mechanism of its functioning and questions of social and economic nature on the example of intracity municipalities of Moscow are considered by the author. In the conclusion the author emphasizes that further development of a regulatory framework with gradual increase in powers of recommendations of municipal deputies is necessary for effective implementation of management on places.

  4. Development and Implementation of Theoretical Methods for the Calculation of EPR Parameters in Periodic Simulations

    OpenAIRE

    Declerck, Reinout

    2008-01-01

    For many years now, the determination and prediction of the properties of matter at the level of the nanoscale, based only on the fundamental laws of quantum physics (ab initio), has been a very active and valuable field of research. Density functional theory (DFT) is a particularly successful ab-initio technique, which was developed by Hohenberg and Kohn, and formulated into a useful algorithm by Kohn and Sham. Essentially, the theorem of Hohenberg-Kohn states that the electronic ground-stat...

  5. THEORETICAL ASPECTS OF FINANCIAL SUPPORT OF MACROECONOMIC STABILITY OF UKRAINE FROM THE POSITION OF SUSTAINABLE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Yurii Barskyi

    2015-09-01

    Tax incentives for sustainable development of the region are significantly influenced by: finance of commercial enterprises of all forms of ownership operating in the region, the finance of social institutions operating in the region. The finances of public organizations and charity funds operating in the region, as well as the finances of households of the region; consolidated regional budget funds and state trust funds operating in the region.

  6. Theoretical Development of an Orthotropic Elasto-Plastic Generalized Composite Material Model

    Science.gov (United States)

    Goldberg, Robert; Carney, Kelly; DuBois, Paul; Hoffarth, Canio; Harrington, Joseph; Rajan, Subramaniam; Blankenhorn, Gunther

    2014-01-01

    The need for accurate material models to simulate the deformation, damage and failure of polymer matrix composites is becoming critical as these materials are gaining increased usage in the aerospace and automotive industries. While there are several composite material models currently available within LSDYNA (Livermore Software Technology Corporation), there are several features that have been identified that could improve the predictive capability of a composite model. To address these needs, a combined plasticity and damage model suitable for use with both solid and shell elements is being developed and is being implemented into LS-DYNA as MAT_213. A key feature of the improved material model is the use of tabulated stress-strain data in a variety of coordinate directions to fully define the stress-strain response of the material. To date, the model development efforts have focused on creating the plasticity portion of the model. The Tsai-Wu composite failure model has been generalized and extended to a strain-hardening based orthotropic yield function with a nonassociative flow rule. The coefficients of the yield function, and the stresses to be used in both the yield function and the flow rule, are computed based on the input stress-strain curves using the effective plastic strain as the tracking variable. The coefficients in the flow rule are computed based on the obtained stress-strain data. The developed material model is suitable for implementation within LS-DYNA for use in analyzing the nonlinear response of polymer composites.

  7. Vernacular Languages and Cultures in Rural Development: Theoretical Discourse and Some Examples

    Directory of Open Access Journals (Sweden)

    Emilia Nercissians

    2008-04-01

    Full Text Available The role of language and culture in rural development projects is investigated. Examples taken from the context of Northern Iran, the significance of which is not confined to its agricultural and forestry resources and extends beyond national borders, are presented. A starting point of the analysis is an appreciation of diversity, not only in the biological, but also in the cultural sense, as an asset and viewing development endeavors as sense making acts. It is further argued that new intangible forms of capital are increasingly gaining in importance in the contemporary world. Capital is considered not merely as an asset, but as a relation having accumulation moment as well, and impact on the regeneration of cultural and economic divides. A central concern is enhancing social inclusion and promoting conditions for making voices of otherness heard. It is deemed that vernacular voices encompass valuable indigenous knowledge and modes of perception, the negligence of which can undermine the success of rural development projects.

  8. Job embeddedness: a theoretical foundation for developing a comprehensive nurse retention plan.

    Science.gov (United States)

    Holtom, Brooks C; O'Neill, Bonnie S

    2004-05-01

    Using a new construct, job embeddedness, from the business management literature, this study first examines its value in predicting employee retention in a healthcare setting and second, assesses whether the factors that influence the retention of nurses are systematically different from those influencing other healthcare workers. The shortage of skilled healthcare workers makes it imperative that healthcare providers develop effective recruitment and retention plans. With nursing turnover averaging more than 20% a year and competition to hire new nurses fierce, many administrators rightly question whether they should develop specialized plans to recruit and retain nurses. A longitudinal research design was employed to assess the predictive validity of the job embeddedness concept. At time 1, surveys were mailed to a random sample of 500 employees of a community-based hospital in the Northwest region of the United States. The survey assessed personal characteristics, job satisfaction, organizational commitment, job embeddedness, job search, perceived alternatives, and intent to leave. One year later (time 2) the organization provided data regarding voluntary leavers from the hospital. Hospital employees returned 232 surveys, yielding a response rate of 46.4 %. The results indicate that job embeddedness predicted turnover over and beyond a combination of perceived desirability of movement measures (job satisfaction, organizational commitment) and perceived ease of movement measures (job alternatives, job search). Thus, job embeddedness assesses new and meaningful variance in turnover in excess of that predicted by the major variables included in almost all the major models of turnover. The findings suggest that job embeddedness is a valuable lens through which to evaluate employee retention in healthcare organizations. Further, the levers for influencing retention are substantially similar for nurses and other healthcare workers. Implications of these findings and

  9. Exploring the Obstacles and the Limits of Sustainable Development. A Theoretical Approach

    Directory of Open Access Journals (Sweden)

    Paula-Carmen Roșca

    2017-03-01

    Full Text Available The term “sustainable” or “sustainability” is currently used so much and in so many fields that it has become basically part of our everyday lives. It has been connected and linked to almost everything related to our living, to our lifestyle: energy, transport, housing, diet, clothing etc. But what does the term “sustainable” really mean? Many people may have heard about sustainable development or sustainability and may have even tried to have a sustainable living but their efforts might not be enough. The present paper is meant to bring forward a few of the limits of “sustainability” concept. Moreover, it is focused on revealing some arguments from the “other side” along with disagreements regarding some of the principles of “sustainable development” and even critics related to its progress, to its achievements. Another purpose of this paper is to draw attention over some of the issues and obstacles which may threaten the future of sustainability. The paper is also meant to highlight the impact that some stakeholders might have on the evolution of sustainable development due to their financial power, on a global scale.

  10. Induced Polarization Signature of Biofilms in Porous Media: From Laboratory Experiments to Theoretical Developments and Validation

    Energy Technology Data Exchange (ETDEWEB)

    Atekwana, Estella [Oklahoma State Univ., Stillwater, OK (United States); Patrauchan, Marianna [Oklahoma State Univ., Stillwater, OK (United States); Revil, Andre [Colorado School of Mines, Golden, CO (United States)

    2016-10-04

    Bioremediation strategies for mitigating the transport of heavy metals and radionuclides in subsurface sediments have largely targeted the use of dissimilatory metal and sulfate-reducing bacteria. Growth and metabolic activities from these organisms can significantly influence biogeochemical processes, including mineral dissolution/precipitation, fluctuating pH and redox potential (Eh) values, development of biofilms, and decreasing hydraulic conductivity. The Spectral Induced Polarization (SIP) technique has emerged as the technique most sensitive to the presence of microbial cells and biofilms in porous media; yet it is often difficult to unambiguously distinguish the impact of multiple and often competing processes that occur during in-situ biostimulation activities on the SIP signatures. The main goal of our project is to quantitatively characterize major components within bacterial biofilms (cells, DNA, metals, metabolites etc.) contributing to detectable SIP signatures. We specifically: (i) evaluated the contribution of biofilm components to SIP signatures, (ii) determined the contribution of biogenic minerals commonly found in biofilms to SIP signatures, (iii) determined if the SIP signatures can be used to quantify the rates of biofilm formation, (iv) developed models and a fundamental understanding of potential underlying polarization mechanisms at low frequencies (<40 kHz) resulting from the presence of microbial cells and biofilms

  11. Food and Gastronomy for Sustainable Place Development: A Multidisciplinary Analysis of Different Theoretical Approaches

    Directory of Open Access Journals (Sweden)

    Chiara Rinaldi

    2017-09-01

    Full Text Available Food and gastronomy (F&G are increasingly recognized as potentially determinant elements for the sustainable development of places. A commonly held theory in many research fields is that F&G can contribute to the economic, social and environmental sustainability of places while potentially representing elements that increase those places’ attractiveness and competitiveness. This literature review investigates three main research streams: agriculture and rural studies, place branding and place marketing and food tourism. The aim is to reduce the research fragmentation by offering a more holistic perspective on how F&G are understood in different research areas to identify common and transversal elements that might represent the core of F&G’s potential for place development. These areas have been analysed to identify common, recurrent and significative local F&G resources. Significance in this context indicates that the identified local F&G resources have emerged as meaningful at the local and global levels; that is, they are embedded in the place (spatially and culturally and are able to identify and differentiate the place in global competition. The analysis reveals that all local F&G resources that support place distinctiveness and attractiveness should also address and strengthen the link between the place (territorial/geographical dimensions and the people (cultural dimensions.

  12. Development of Simple Drying Model for Performance Prediction of Solar Dryer: Theoretical Analysis

    DEFF Research Database (Denmark)

    Singh, Shobhana; Kumar, Subodh

    2012-01-01

    of experimental drying parameters. A laboratory model of mixed-mode solar dryer system is tested with cylindrical potato samples of thickness 5 and 18 mm under simulated indoor conditions. The potato samples were dried at a constant absorbed thermal energy of 750 W/m2 and air mass flow rate of 0.011 kg......An analytical moisture diffusion model which considers the influence of external resistance to mass transfer is developed to predict thermal performance of dryer system. The moisture diffusion coefficient, Deff that is necessary to evaluate the prediction model has been determined in terms....../sec. The proposed model with computed moisture diffusion coefficient, Deff has been utilized to predict dimensionless moisture content, φ for each test condition of a given dryer design. In order to validate the model, statistical test methods such as mean absolute error (MAE), root mean square error (RSME...

  13. Theoretical Aspects in Developing Directions for Risking Terroristic Threats for National Economy

    Directory of Open Access Journals (Sweden)

    Rizgar J. Aziz Galali

    2017-12-01

    Full Text Available The current stage of the existence of the world community is characterized by an ever-increasing level of threat of the emergence of undesirable effects on the world economy of acts of a terrorist nature. Historical facts show that such phenomenon as terrorism can take place in any state of the world, regardless of the standard of living of the population, education and other factors. However, studies in this area still show that countries with an underdeveloped economy and a low standard of living of the population are more likely to be affected by terrorist acts. Such states can act as the "cradle" of terrorism and this, first of all, affects their economic and social situation. But practice shows that terrorism is capable of spreading actively around the world, therefore, an important element in preventing the emergence of terrorism is the construction of an integral system of national economic security, with a special place to search for and develop methods and approaches to reduce the risks of terrorist threat. The article is devoted to the consideration of topical issues of the theory of the emergence of a terrorist threat, as well as the possible negative impact of terrorist acts on the national economy, its security and stability. In addition, the article suggests an improved scheme of risks of the national economy, as well as a scheme of types of diversification of risks of a terrorist threat, and a mechanism for managing the risk of a terrorist threat to the national economy has been developed.

  14. Development of an intervention for foster parents of young foster children with externalizing behavior: theoretical basis and program description.

    Science.gov (United States)

    Vanschoonlandt, Femke; Vanderfaeillie, Johan; Van Holen, Frank; De Maeyer, Skrällan

    2012-12-01

    Foster parents are often faced with serious externalizing behaviors of their foster child. These behavioral problems may induce family stress and are related to less effective parenting and often increase. Foster children with behavioral problems are also more at risk of placement breakdown. An intervention to support foster parents of young foster children with externalizing behaviors is necessary to improve the effectiveness of foster placements. Based on research on effective parenting interventions and special needs of foster children, a treatment protocol was developed. This paper describes theoretical foundations for the content and form of the intervention and gives an overview of the modular treatment protocol. Preliminary outcomes of this intervention as well as challenges and future developments and research activities are discussed.

  15. The effects of evidence bounds on decision-making: theoretical and empirical developments

    Directory of Open Access Journals (Sweden)

    Jiaxiang eZhang

    2012-08-01

    Full Text Available Converging findings from behavioral, neurophysiological and neuroimaging studies suggest an integration-to-boundary mechanism governing decision formation and choice selection. This mechanism is supported by sequential sampling models of choice decisions, which can implement statistically optimal decision strategies for selecting between multiple alternative options on the basis of sensory evidence. This review focuses on recent developments in understanding the evidence boundary, an important component of decision-making raised by experimental findings and models. The article starts by reviewing the neurobiology of perceptual decisions and several influential sequential sampling models, in particular the drift-diffusion model, the Ornstein-Uhlenbeck model and the leaky-competing-accumulator model. In the second part, the article examines how the boundary may affect a model’s dynamics and performance and to what extent it may improve a model’s fits to experimental data. In the third part, the article examines recent findings that support the presence and site of boundaries in the brain. The article considers two questions: 1 whether the boundary is a spontaneous property of neural integrators, or is controlled by dedicated neural circuits; 2 if the boundary is variable, what could be the driving factors behind boundary changes? The review brings together studies using different experimental methods in seeking answers to these questions, highlights psychological and physiological factors that may be associated with the boundary and its changes, and further considers the evidence boundary as a generic mechanism to guide complex behavior.

  16. Developing Theoretical Marine Habitat Suitability Models from Remotely-Sensed Data and Traditional Ecological Knowledge

    Directory of Open Access Journals (Sweden)

    Patrick M. Olsen

    2015-09-01

    Full Text Available There is a lack of information regarding critical habitats for many marine species, including the bearded seal, an important subsistence species for the indigenous residents of Arctic regions. A systematic approach to modeling marine mammal habitat in arctic regions using the lifetime and multi-generational Traditional Ecological Knowledge (TEK of Alaska Native hunters is developed to address this gap. The approach uses lifetime and cross-generational knowledge of subsistence hunters and their harvest data in the place of observational knowledge gained from Western scientific field surveys of marine mammal sightings. TEK information for mid-June to October was transformed to seal presence/pseudo-absence and used to train Classification Tree Analyses of environmental predictor variables to predict suitable habitat for bearded seals in the Bering Strait region. Predictor variables were derived from a suite of terrestrial, oceanic, and atmospheric remote sensing products, transformed using trend analysis techniques, and aggregated. A Kappa of 0.883 was achieved for habitat classifications. The TEK information used is spatially restricted, but provides a viable, replicable data source that can replace or complement Western scientific observational data.

  17. Pathways from parental AIDS to child psychological, educational and sexual risk: developing an empirically-based interactive theoretical model.

    Science.gov (United States)

    Cluver, Lucie; Orkin, Mark; Boyes, Mark E; Sherr, Lorraine; Makasi, Daphne; Nikelo, Joy

    2013-06-01

    Increasing evidence demonstrates negative psychological, health, and developmental outcomes for children associated with parental HIV/AIDS illness and death. However, little is known about how parental AIDS leads to negative child outcomes. This study used a structural equation modelling approach to develop an empirically-based theoretical model of interactive relationships between parental or primary caregiver AIDS-illness, AIDS-orphanhood and predicted intervening factors associated with children's psychological distress, educational access and sexual health. Cross-sectional data were collected in 2009-2011, from 6002 children aged 10-17 years in three provinces of South Africa using stratified random sampling. Comparison groups included children orphaned by AIDS, orphaned by other causes and non-orphans, and children whose parents or primary caregivers were unwell with AIDS, unwell with other causes or healthy. Participants reported on psychological symptoms, educational access, and sexual health risks, as well as hypothesized sociodemographic and intervening factors. In order to build an interactive theoretical model of multiple child outcomes, multivariate regression and structural equation models were developed for each individual outcome, and then combined into an overall model. Neither AIDS-orphanhood nor parental AIDS-illness were directly associated with psychological distress, educational access, or sexual health. Instead, significant indirect effects of AIDS-orphanhood and parental AIDS-illness were obtained on all measured outcomes. Child psychological, educational and sexual health risks share a common set of intervening variables including parental disability, poverty, community violence, stigma, and child abuse that together comprise chain effects. In all models, parental AIDS-illness had stronger effects and more risk pathways than AIDS-orphanhood, especially via poverty and parental disability. AIDS-orphanhood and parental AIDS-illness impact

  18. Development and implementation of theoretical methods for the description of electronically core-excited states

    Energy Technology Data Exchange (ETDEWEB)

    Wenzel, Jan

    2016-03-23

    My PhD project mainly consists of two important parts. One was to enhance and develop variants of the core-valence-separation-algebraic-diagrammatic-construction (CVS-ADC) method and implement all approaches efficiently in the adcman program, which is part of the Q-chem program package. Secondly, I benchmarked these implementations and simulated X-ray absorption spectra of small- and medium-sized molecules from different fields. In this thesis, I present my implementations, as well as the results and applications obtained with the CVS-ADC methods and give a general introduction into quantum chemical methods. At first, I implemented the CVS-ADC approach up to the extended second in an efficient way. The program is able to deal with systems up to 500 basis functions in an adequate computational time, which allows for accurate calculations of medium-sized closed-shell molecules, e.g. acenaphthenequinone (ANQ). Afterwards, the CVS-ADC implementation was extended for the first time to deal with open-shell systems, i.e. ions and radicals, which implies a treatment of unrestricted wave functions and spin-orbitals. The resulting method is denoted as CVS-UADC(2)-x. For the first time, I applied the CVS approximation to the the third order ADC scheme, derived the working equations, and implemented the CVS-ADC(3) method in adcman. As the last step, I applied the CVS formalism for the first time to the ISR approach to enable calculations of core-excited state properties and densities. To benchmark all restricted and unrestricted CVS-ADC/CVS-ISR methods up to third order in perturbation theory, I chose a set of small molecules, e.g. carbon monoxide (CO). The calculated values of core-excitation energies, transition moments and static dipole moments are compared with experimental data or other approaches, thereby estimating complete basis set (CBS) limits. Furthermore, a comprehensive study of different basis sets is performed. In combination with the CBS limit of the aug

  19. The Institutions of «Green Economy» for Sustainable Development of Agrarian Sector: Theoretical Dimension

    Directory of Open Access Journals (Sweden)

    Khodakivska Olga V.

    2017-07-01

    Full Text Available The article is aimed at substantiating the conceptual foundations and theoretical positions of the place and role of institutions in formation of the «green economy» in the context of implementation of the principles for sustainable development of agrarian sector. The article reflects the main scientific concepts that are directed to address the problems of environmentally oriented development, in particular the concepts of ecotopia, anthropocentrism, ecocentrism, biocentrism, and the concept of sustainable development. It has been found that the conceptual foundations for sustainable development include ecologization of economy, humanization of production, introducing a system of principled approaches to public affairs. The general provisions of formation of «green economy» have been characterized and its key principles have been provided. The role and value of institutions in the organizational provision of the sustainable development of agrarian sector, which, in the organizational-economic, coordinating and enabling aspects are the key driver for harmonization of the interaction of all participants in economic relations, have been substantiated.

  20. A case of cutaneous squamous cell carcinoma associated with small cell carcinoma of lung developing a skin metastasis on previously irradiated area

    International Nuclear Information System (INIS)

    Kohda, Mamoru; Takei, Yoji; Ueki, Hiroaki

    1983-01-01

    Squamous cell carcinoma which occurred in the penis of a 61-year-old male patient was treated surgically and by Linac (a total of 10,400 rad). However, it was not cured. Abnormal shadows in the lung and multiple liver tumor was noted one month before death. Autopsy revealed generalized metastases of pulmonary small-cell carcinoma, and persistent squamous cell carcinoma of the penis with no metastases. Skin metastasis of lung carcinoma occurred only in the area previously irradiated. (Ueda, J.)

  1. Development, Theoretical Framework, and Outcome Evaluation from Implementation of a Parent and Teacher-Delivered Adolescent Intervention on Adolescent Vaccination

    Science.gov (United States)

    Gargano, Lisa M.; Herbert, Natasha L.; Painter, Julia E.; Sales, Jessica M.; Vogt, Tara M.; Morfaw, Christopher; Jones, LaDawna M.; Murray, Dennis; DiClemente, Ralph J.; Hughes, James M.

    2017-01-01

    The Advisory Committee on Immunization Practices recommended immunization schedule for adolescents includes three vaccines (Tdap, HPV, and MCV4) and annual influenza vaccination. Given the increasing number of recommended vaccines for adolescents and health and economic costs associated with non-vaccination, it is imperative that effective strategies for increasing vaccination rates among adolescents be developed. This article describes the development, theoretical framework, and initial first-year evaluation of an intervention designed to promote vaccine acceptance among a middle- and high-school based sample of adolescents and their parents in eastern Georgia. Adolescents, parents, and teachers were active participants in the development of the intervention. The intervention, which consisted of a brochure for parents and a teacher-delivered curriculum for adolescents, was guided by constructs from the Health Belief Model and Theory of Reasoned Action. Evaluation results indicated that our intervention development methods were successful in creating a brochure that met cultural relevance and literacy needs of parents. We also demonstrated an increase in student knowledge of and attitudes toward vaccines. To our knowledge, this study is the first to extensively engage middle- and high-school students, parents, and teachers in the design and implementation of key theory-based educational components of a school-based, teacher-delivered adolescent vaccination intervention. PMID:24440920

  2. Theoretical Results of Research on Spatial and Territorial Development (on Examples of the North of European Russia

    Directory of Open Access Journals (Sweden)

    Vitaly Nikolayevich Lazhentsev

    2015-12-01

    Full Text Available The article focuses on the relationship between the concepts of “spatial” and “territorial” development. It is shown that these concepts are different in their content, but at the same time greatly complement each other in the specific studies. Only in the category of “spatial development”, there are general directions of productive forces, the geographical dimension of a certain type of activity, the economic measurement of distances, line communications and other network structure of the economy. The author includes to the concept of “territorial development” the territory itself as an area of natural and economic capital and territorial management based on it. The study of the spatial and territorial aspects of socio-economic development of the European North of Russia has shown that its immediate future is connected not only to the large projects of creation of new fuel and energy, mineral and timber bases but with the improvement of the existing economic systems on the basis of scientific and technological progress and inter-regional integration. The moving from the developed territories to new Arctic and northern locations is associated with huge costs and requires time for scientific and technical preparations. The modernization of existing industries and clusters is a priority in the development of the productive forces of the European North of Russia. Theoretical and practical recommendations as a result of the study of the spatial and territorial development can be applied in the development of state strategic planning documents. Currently, the practice of strategic planning does not fully explain the content of the concepts of “spatial development” and “territorial development”. And this incompleteness is so essential that its overcoming should be seen as one of the major objectives of regional policy.

  3. Theoretical geodesy

    Directory of Open Access Journals (Sweden)

    Borkowski Andrzej

    2015-12-01

    Full Text Available The paper presents a summary of research activities concerning theoretical geodesy performed in Poland in the period of 2011-2014. It contains the results of research on new methods of the parameter estimation, a study on robustness properties of the M-estimation, control network and deformation analysis, and geodetic time series analysis. The main achievements in the geodetic parameter estimation involve a new model of the M-estimation with probabilistic models of geodetic observations, a new Shift-Msplit estimation, which allows to estimate a vector of parameter differences and the Shift-Msplit(+ that is a generalisation of Shift-Msplit estimation if the design matrix A of a functional model has not a full column rank. The new algorithms of the coordinates conversion between the Cartesian and geodetic coordinates, both on the rotational and triaxial ellipsoid can be mentioned as a highlights of the research of the last four years. New parameter estimation models developed have been adopted and successfully applied to the control network and deformation analysis.

  4. Uranium dioxide-sodium interactions. Development of a theoretical model. Fitting of this model to the experimental results

    International Nuclear Information System (INIS)

    Syrmalenios, Panayotis

    1973-01-01

    This research thesis addresses the issue of safety of fast neutron reactors, and more particularly is a contribution of the study of mechanisms of interaction between molten fuel and sodium. It aims at developing tools of prediction of consequences of three main types of accidents: local fusion of a fuel rod and contact of the fuel with the surrounding sodium, failure of an assembly due to the fusion of several rods and fuel-coolant interaction within the assembly, and fuel-coolant interaction at the level of the reactor core. The author first proposes a bibliographical analysis of experimental and theoretical studies related to this issue of interaction between a hot body and a cold liquid, and of its consequences. Then, he introduces a mathematical model and its resolution method, and reports the use of the associated code (Corfou) for the interpretation of experimental results: expulsion of cold sodium column by expansion of an overheated sodium mass, fusion of a rod by Joule effect, interaction between UO 2 molten by high frequency with liquid sodium. Finally, the author discusses a comparison between the Corfou code and other models which are being currently developed [fr

  5. Current Status of Experimental and Theoretical Work on Sodium/Fuel Interaction (SFI) at Karlsruhe 'Code Developments'

    International Nuclear Information System (INIS)

    Beutel, H.; Bojarsky, E.; Reiser, H.; Caldarola, L.; Jacobs, H.; Zyszkowski, W.

    1976-01-01

    The theoretical work follows two main lines: A. Code development; B. Theoretical work on fragmentation. Two computer codes have been developed. The first code contains a heat transfer model (during the vaporization phase) based on the inverse Leidenfrost phenomenon (which has been observed experimentally in water). The exact solution of the heat diffusion equation in a sphere is included in the code. The code accounts for the time history of each fuel particle by means of specially averaged temperature values. The presence of fission gases can also be taken into account. A size distribution of fuel particles has also been incorporated in the code as well as the effect of the friction due to the channel walls and that of the pressure losses at channel outlet. An extensive parametric study has been carried out with this code. The main conclusions are the following: 1. Total mechanical work strongly decreases with the fragmentation and/or mixing time constants. 2. Vapour blanketing during the vaporization phase is effective only if accompanied by a relatively slow process of fragmentation and mixing. In this case total mechanical work strongly decreased with degree of vapour blanketing. 3. Total mechanical work rises with initial length of sodium piston. 4. Time to empty the 120 cm long channel is 15-20 msecs. for values of the fragmentation and/or mixing time constants of the order of 5-10 msecs. 5. Effects due to particle size distribution and gas content are important only fora rapid fragmentation and mixing process. It must be painted out that (as far as the gas is concerned) this conclusion is valid only within the limits of the effects (due to the gas) which have been considered in the model. Propagation effects can be analysed by using the second code. The interaction region can be subdivided into an arbitrary number of sections, each containing fuel and coolant. The thermal conductivity of the liquid sodium has also been taken into account, as well as the

  6. Development of a rapid lateral flow immunoassay test for detection of exosomes previously enriched from cell culture medium and body fluids.

    Science.gov (United States)

    Oliveira-Rodríguez, Myriam; López-Cobo, Sheila; Reyburn, Hugh T; Costa-García, Agustín; López-Martín, Soraya; Yáñez-Mó, María; Cernuda-Morollón, Eva; Paschen, Annette; Valés-Gómez, Mar; Blanco-López, Maria Carmen

    2016-01-01

    Exosomes are cell-secreted nanovesicles (40-200 nm) that represent a rich source of novel biomarkers in the diagnosis and prognosis of certain diseases. Despite the increasingly recognized relevance of these vesicles as biomarkers, their detection has been limited due in part to current technical challenges in the rapid isolation and analysis of exosomes. The complexity of the development of analytical platforms relies on the heterogeneous composition of the exosome membrane. One of the most attractive tests is the inmunochromatographic strips, which allow rapid detection by unskilled operators. We have successfully developed a novel lateral flow immunoassay (LFIA) for the detection of exosomes based on the use of tetraspanins as targets. We have applied this platform for the detection of exosomes purified from different sources: cell culture supernatants, human plasma and urine. As proof of concept, we explored the analytical potential of this LFIA platform to accurately quantify exosomes purified from a human metastatic melanoma cell line. The one-step assay can be completed in 15 min, with a limit of detection of 8.54×10(5) exosomes/µL when a blend of anti-CD9 and anti-CD81 were selected as capture antibodies and anti-CD63 labelled with gold nanoparticles as detection antibody. Based on our results, this platform could be well suited to be used as a rapid exosome quantification tool, with promising diagnostic applications, bearing in mind that the detection of exosomes from different sources may require adaptation of the analytical settings to their specific composition.

  7. Development of a rapid lateral flow immunoassay test for detection of exosomes previously enriched from cell culture medium and body fluids

    Directory of Open Access Journals (Sweden)

    Myriam Oliveira-Rodríguez

    2016-08-01

    Full Text Available Exosomes are cell-secreted nanovesicles (40–200 nm that represent a rich source of novel biomarkers in the diagnosis and prognosis of certain diseases. Despite the increasingly recognized relevance of these vesicles as biomarkers, their detection has been limited due in part to current technical challenges in the rapid isolation and analysis of exosomes. The complexity of the development of analytical platforms relies on the heterogeneous composition of the exosome membrane. One of the most attractive tests is the inmunochromatographic strips, which allow rapid detection by unskilled operators. We have successfully developed a novel lateral flow immunoassay (LFIA for the detection of exosomes based on the use of tetraspanins as targets. We have applied this platform for the detection of exosomes purified from different sources: cell culture supernatants, human plasma and urine. As proof of concept, we explored the analytical potential of this LFIA platform to accurately quantify exosomes purified from a human metastatic melanoma cell line. The one-step assay can be completed in 15 min, with a limit of detection of 8.54×105 exosomes/µL when a blend of anti-CD9 and anti-CD81 were selected as capture antibodies and anti-CD63 labelled with gold nanoparticles as detection antibody. Based on our results, this platform could be well suited to be used as a rapid exosome quantification tool, with promising diagnostic applications, bearing in mind that the detection of exosomes from different sources may require adaptation of the analytical settings to their specific composition.

  8. Development and validation of a theoretical test in non-anaesthesiologist-administered propofol sedation for gastrointestinal endoscopy

    DEFF Research Database (Denmark)

    Jensen, Jeppe Thue; Savran, Mona Meral; Møller, Ann Merete

    2016-01-01

    OBJECTIVE: Safety with non-anaesthesiologist-administered propofol sedation (NAAP) during gastrointestinal (GI) endoscopy is related to theoretical knowledge. A summative testing of knowledge before attempting supervised nurse-administered propofol sedation (NAPS) in the clinic is advised. The aims...

  9. Developing a theoretical model and questionnaire survey instrument to measure the success of electronic health records in residential aged care

    Science.gov (United States)

    Yu, Ping; Qian, Siyu

    2018-01-01

    Electronic health records (EHR) are introduced into healthcare organizations worldwide to improve patient safety, healthcare quality and efficiency. A rigorous evaluation of this technology is important to reduce potential negative effects on patient and staff, to provide decision makers with accurate information for system improvement and to ensure return on investment. Therefore, this study develops a theoretical model and questionnaire survey instrument to assess the success of organizational EHR in routine use from the viewpoint of nursing staff in residential aged care homes. The proposed research model incorporates six variables in the reformulated DeLone and McLean information systems success model: system quality, information quality, service quality, use, user satisfaction and net benefits. Two variables training and self-efficacy were also incorporated into the model. A questionnaire survey instrument was designed to measure the eight variables in the model. After a pilot test, the measurement scale was used to collect data from 243 nursing staff members in 10 residential aged care homes belonging to three management groups in Australia. Partial least squares path modeling was conducted to validate the model. The validated EHR systems success model predicts the impact of the four antecedent variables—training, self-efficacy, system quality and information quality—on the net benefits, the indicator of EHR systems success, through the intermittent variables use and user satisfaction. A 24-item measurement scale was developed to quantitatively evaluate the performance of an EHR system. The parsimonious EHR systems success model and the measurement scale can be used to benchmark EHR systems success across organizations and units and over time. PMID:29315323

  10. Developing a theoretical model and questionnaire survey instrument to measure the success of electronic health records in residential aged care.

    Science.gov (United States)

    Yu, Ping; Qian, Siyu

    2018-01-01

    Electronic health records (EHR) are introduced into healthcare organizations worldwide to improve patient safety, healthcare quality and efficiency. A rigorous evaluation of this technology is important to reduce potential negative effects on patient and staff, to provide decision makers with accurate information for system improvement and to ensure return on investment. Therefore, this study develops a theoretical model and questionnaire survey instrument to assess the success of organizational EHR in routine use from the viewpoint of nursing staff in residential aged care homes. The proposed research model incorporates six variables in the reformulated DeLone and McLean information systems success model: system quality, information quality, service quality, use, user satisfaction and net benefits. Two variables training and self-efficacy were also incorporated into the model. A questionnaire survey instrument was designed to measure the eight variables in the model. After a pilot test, the measurement scale was used to collect data from 243 nursing staff members in 10 residential aged care homes belonging to three management groups in Australia. Partial least squares path modeling was conducted to validate the model. The validated EHR systems success model predicts the impact of the four antecedent variables-training, self-efficacy, system quality and information quality-on the net benefits, the indicator of EHR systems success, through the intermittent variables use and user satisfaction. A 24-item measurement scale was developed to quantitatively evaluate the performance of an EHR system. The parsimonious EHR systems success model and the measurement scale can be used to benchmark EHR systems success across organizations and units and over time.

  11. The Eukaryotic Microbiome: Origins and Implications for Fetal and Neonatal life note bene: previous titles: The Microbiome in the Development of Terrestrial Life,and,The Origins and Development of the Neonatal Microbiome

    Directory of Open Access Journals (Sweden)

    William B. Miller

    2016-09-01

    Full Text Available All eukaryotic organisms are holobionts representing complex collaborations between the entire microbiome of each eukaryote and its innate cells. These linked constituencies form complex localized and interlocking ecologies in which the specific microbial constituents and their relative abundance differ substantially according to age and environmental exposures. Rapid advances in microbiology and genetic research techniques have uncovered a significant previous underestimate of the extent of that microbial contribution and its metabolic and developmental impact on holobionts. Therefore, a re-calibration of the neonatal period is suggested as a transitional phase in development that includes the acquisition of consequential collaborative microbial life from extensive environmental influences. These co-dependent, symbiotic relationships formed in the fetal and neonatal stages extend into adulthood and even across generations.

  12. Norms and the development of new knowledge as determinants of climate policy. Theoretical considerations and empirical evidence

    International Nuclear Information System (INIS)

    Schymura, Michael

    2013-01-01

    The evaluation of long-term effects of climate change in cost-benefit analysis has a long tradition in environmental economics. Since the publication of the ''Stern Review'' in 2006, the debate about the impacts of climate change on the economy and how to compare cost and benefits with each other was revived. The assessment of climate change mitigation policies mainly depends on three not mutually exclusive decisions: First, the discount rate chosen, since costs are incurred today and long-term benefits occur in the future. Second, the uncertainties related to the problem of climate change. This debate was spurred by the literature surrounding Martin Weitzman's ''dismal theorem'', stating that the unknown unknowns could be too large for cost-benefit analysis of long-term climate policy measures. And third, the treatment of technological change in economic models of climate policy. This dissertation contributes to all three mentioned aspects and consists of two interrelated parts. First, I discuss norms, economic welfare criteria, and catastrophic risks in the context of climate change. This first part is closely bound to a discussion of the Stern Review. The second part of the dissertation deals with technological change in its various dimensions and addresses several questions: How is technological change taken into consideration in large-scale environment-economy models? How do certain inputs substitute each other? And how does technology affect energy intensity, a key parameter for meeting targets set by climate policy? Alongside these questions, I also discuss how the production of knowledge takes place in an environmental and resource economics framework and how knowledge production patterns have changed during previous decades. While the first part is of theoretical nature, the second part is mainly empirical. Summing up, I suggest approaches towards long-term evaluation of climate policies and how some methodological drawbacks of the ''Stern Review'' could

  13. Confirming the theoretical structure of expert-developed text messages to improve adherence to anti-hypertensive medications

    Science.gov (United States)

    Farris, Karen B; Salgado, Teresa M; Batra, Peter; Piette, John D.; Singh, Satinder; Guhad, Ahmed; Newman, Sean; Marshall, Vincent D.; An, Larry

    2015-01-01

    Background Text messages can improve medication adherence and outcomes in several conditions. For this study, experts developed text messages addressing determinants of medication adherence: disease beliefs, medication necessity, medication concerns, and forgetfulness, as well as positive reinforcement messages for patients who were adherent. Objectives To validate expert-developed text messages to address medication non-adherence with a group of non-researchers. Methods A two-wave, card-sorting activity was conducted with students and staff at the University of Michigan. In the first wave, 40 participants grouped 32 messages addressing barriers for medication adherence (disease beliefs, medication necessity, medication concerns, and forgetfulness) according to their perceived relationship. Messages with poor grouping agreement were deleted or modified. In the second wave, positive reinforcement messages were developed and tested along with the previous categories (36 messages) by 37 participants. Similarity and cluster analyses were used to assess agreement between experts and participants. Results In the first card-sorting wave, participants grouped messages into between 2 and 13 separate categories. Similarity analysis showed four groupings of messages, however, some had an agreement below 50% and clusters appeared dispersed. In the second wave, and after messages being edited, participants grouped the messages into between 4 and 9 categories. Five groups (now including positive reinforcement messages) were identified with higher agreement in the similarity and cluster analyses. Conclusions The structure of expert-developed text messages to address medication adherence key barriers was confirmed. Messages will be used in future research to determine their impact on affecting medication adherence to anti-hypertensive medications using a reinforcement learning controlled text messaging service. PMID:26525857

  14. Theoretical Investigations of Well-Defined Graphene Nanostructures: Catalysis, Spectroscopy, and Development of Novel Fragment-Based Models

    Science.gov (United States)

    Noffke, Benjamin W.

    Carbon materials have the potential to replace some precious metals in renewable energy applications. These materials are particularly attractive because of the elemental abundance and relatively low nuclear mass of carbon, implying economically feasible and lightweight materials. Targeted design of carbon materials is hindered by the lack of fundamental understanding that is required to tailor their properties for the desired application. However, most available synthetic methods to create carbon materials involve harsh conditions that limit the control of the resulting structure. Without a well-defined structure, the system is too complex and fundamental studies cannot be definitive. This work seeks to gain fundamental understanding through the development and application of efficient computational models for these systems, in conjunction with experiments performed on soluble, well-defined graphene nanostructures prepared by our group using a bottom-up synthetic approach. Theory is used to determine mechanistic details for well-defined carbon systems in applications of catalysis and electrochemical transformations. The resulting computational models do well to explain previous observations of carbon materials and provide suggestions for future directions. However, as the system size of the nanostructures gets larger, the computational cost can become prohibitive. To reduce the computational scaling of quantum chemical calculations, a new fragmentation scheme has been developed that addresses the challenges of fragmenting conjugated molecules. By selecting fragments that retain important structural characteristics in graphene, a more efficient method is achieved. The new method paves the way for an automated, systematic fragmentation scheme of graphene molecules.

  15. Theoretical and experimental work on steam generator integrity and reliability with particular reference to leak development and detection. United Kingdom status report. October 1983

    International Nuclear Information System (INIS)

    Smedley, J.A.; Edge, D.M.

    1984-01-01

    This paper reviews the experimental and theoretical work in the UK on the characteristics of sodium-water reactions and describes work on the development of leak detection systems. A review of the operating experience with the PFR steam generators and the protection philosophy used on PFR is also given and the design studies for the Commercial Demonstration Fast Reactor (CDFR) are described

  16. Social Representations of the Development of Intelligence, Parental Values and Parenting Styles: A Theoretical Model for Analysis

    Science.gov (United States)

    Miguel, Isabel; Valentim, Joaquim Pires; Carugati, Felice

    2013-01-01

    Within the theoretical framework of social representations theory, a substantial body of literature has advocated and shown that, as interpretative systems and forms of knowledge concurring in the construction of a social reality, social representations are guides for action, influencing behaviours and social relations. Based on this assumption,…

  17. Global value chains linking local producers from developing countries to international markets: theoretical perspectives and empirical cases

    NARCIS (Netherlands)

    Dijk, van D.; Trienekens, J.H.

    2011-01-01

    This volume presents seven case studies of global value chains alongside two theoretical chapters concerning these chains. The contributors explore a wide range of issues relevant to value chains: the impact of global value chains on local upgrading strategies, the role of governance structures

  18. Theoretical study of the thermal radiation of rough surfaces. Development of a device for the measurement of emissivity, and application to AISI 316 stainless steel

    International Nuclear Information System (INIS)

    Heinisch, Bruno

    1982-01-01

    Within the frame of the study of heat transfers by radiation, this research thesis addresses the theoretical and experimental determination of the directional monochromatic emissivity. After some theoretical recalls, the author presents models for a direct calculation of emissivity, which in fact calculate bidirectional reflectivity by using laws of physical optics. An experimental device has been developed for the direct measurement of directional monochromatic emissivity of materials in the infrared (wavelength from 2 to 15 microns) in a polarised radiation. This device uses double beam with double modulation. Experimental results are presented for the 316 stainless steel [fr

  19. Theoretical physics

    CERN Document Server

    Joos, Georg

    1986-01-01

    Among the finest, most comprehensive treatments of theoretical physics ever written, this classic volume comprises a superb introduction to the main branches of the discipline and offers solid grounding for further research in a variety of fields. Students will find no better one-volume coverage of so many essential topics; moreover, since its first publication, the book has been substantially revised and updated with additional material on Bessel functions, spherical harmonics, superconductivity, elastomers, and other subjects.The first four chapters review mathematical topics needed by theo

  20. Placental complications after a previous cesarean section

    OpenAIRE

    Milošević Jelena; Lilić Vekoslav; Tasić Marija; Radović-Janošević Dragana; Stefanović Milan; Antić Vladimir

    2009-01-01

    Introduction The incidence of cesarean section has been rising in the past 50 years. With the increased number of cesarean sections, the number of pregnancies with the previous cesarean section rises as well. The aim of this study was to establish the influence of the previous cesarean section on the development of placental complications: placenta previa, placental abruption and placenta accreta, as well as to determine the influence of the number of previous cesarean sections on the complic...

  1. Impact of a Tutored Theoretical-Practical Training to Develop Undergraduate Students’ Skills for the Detection of Caries Lesions: Study Protocol for a Multicenter Controlled Randomized Study

    Science.gov (United States)

    Ferreira, Fernanda Rosche; Mendes, Fausto Medeiros; Raggio, Daniela Prócida; Imparato, José Carlos; Bonecker, Marcelo; Magalhães, Ana Carolina; Wang, Linda; Rios, Daniela; Pessan, Juliano Pelim; Duque, Cristiane; Rebelo, Maria Augusta Bessa; Alves Filho, Ary Oliveira; Lima, Marina De Deus Moura; Moura, Marcoeli Silva; De Carli, Alessandro Diogo; Sanabe, Mariane Emi; Cenci, Maximiliano Sergio; Oliveira, Elenara Ferreira; Correa, Marcos Britto; Rocha, Rachel Oliveira; Zenkner, Julio Eduardo; Murisí, Pedroza Uribe; Martignon, Stefania; Lara, Juan Sebastian; Aquino, Fatima Gabriela; Carrillo, Alfredo; Chu, Chun Hung; Deery, Chris; Ricketts, David; Melo, Paulo; Antunes, José Leopoldo Ferreira; Ekstrand, Kim Rud

    2017-01-01

    Background Tutored laboratorial activities could be a manner of improving the competency development of students. However, its impact over conventional theoretical classes has not yet been tested. Additionally, different university contexts could influence this issue and should be explored. Objective To assess the impact of a tutored theoretical-practical training for teaching undergraduate students to detect caries lesions as compared with theoretical teaching activities. The impact of these teaching/learning activities will be assessed in terms of efficacy, cost/benefit, retention of knowledge/acquired competences, and student acceptability. Methods Sixteen centers (7 centers from Brazil and 9 centers from other countries throughout the world) are involved in the inclusion of subjects for this protocol. A randomized controlled study with parallel groups will be conducted. One group (control) will be exposed to a 60- to 90-minute conventional theoretical class and the other group (test) will be exposed to the same theoretical class and also a 90-minute laboratory class, including exercises and discussions based on the evaluation of a pool of images and extracted teeth. The mentioned outcomes will be evaluated immediately after the teaching activities and also in medium- and long-term analyses. To compare the long-term outcomes, students who enrolled in the university before the participating students will be interviewed for data collection and these data will be used as a control and compared with the trained group. This stage will be a nonrandomized phase of this study, nested in the main study. Appropriate statistical analysis will be performed according to the aims of this study. Variables related to the centers will also be analyzed and used to model adjustment as possible sources of variability among results. Results This ongoing study is funded by a Brazilian national funding agency (CNPq- 400736/2014-4). We expect that the tutored theoretical

  2. Communities of practice as a learning theoretical perspective on developing new water environmental planning processes in a Danish context

    DEFF Research Database (Denmark)

    Madsen, Mads Lægdsgaard; Noe, Egon

    The Danish Agwaplan project is a water environmental planning project trying to find new ways to change practice in terms of land use on farms. The project has its starting point in a dualistic learning theoretical perception that improving of farmers’ environmental knowledge will lead them...... to create new identities. This paper suggests to base future water environmental planning projects on the actual social context. Such projects can improve their results by considering the farms involved as communities of practice and that these communities of practice including meaning negotiations...

  3. Fish stock assessment under data limitations developing a new method based on a size-structured theoretical ecology framework

    DEFF Research Database (Denmark)

    Kokkalis, Alexandros

    -series. The method provides estimates of fishing mortality and the FMSY reference point, it is tested and validated, and is implemented as software package making it easy to use by stakeholders of different levels. The basis of the method is a size-based theoretical ecology framework that describes exploited fish...... catch is known, important quantities about the stock (e.g. biomass of spawners, recruitment) can be quantified. The method is tested using simulated data and validated using a subset of available data from data-rich fish stocks. The implementation of the method as a software package in the R programming...

  4. Developing a theoretical foundation to change road user behavior and improve traffic safety: Driving under the influence of cannabis (DUIC).

    Science.gov (United States)

    Ward, Nicholas J; Schell, William; Kelley-Baker, Tara; Otto, Jay; Finley, Kari

    2018-01-16

    This study explored a theoretical model to assess the influence of culture on willingness and intention to drive under the influence of cannabis (DUIC). This model is expected to guide the design of strategies to change future DUIC behavior in road users. This study used a survey methodology to obtain a nationally representative sample (n = 941) from the AmeriSpeak Panel. Survey items were designed to measure aspects of a proposed definition of traffic safety culture and a predictive model of its relationship to DUIC. Although the percentage of reported past DUIC behaviors was relatively low (8.5%), this behavior is still a significant public health issue-especially for younger drivers (18-29 years), who reported more DUIC than expected. Findings suggest that specific cultural components (attitudes, norms) reliably predict past DUIC behavior, general DUIC willingness, and future DUIC intention. Most DUIC behavior appears to be deliberate, related significantly to willingness and intention. Intention and willingness both appear to fully moderate the relationship between traffic safety culture and DUIC behavior. This study explored a theoretical model to understand road user behavior involving drug (cannabis)-impaired driving as a significant risk factor for traffic safety. By understanding the cultural factors that increase DUIC behavior, we can create strategies to transform this culture and sustain safer road user behavior.

  5. The Theoretical-Methodological Foundations for Studying the Wealth: a Conceptual-Categorial Analysis of the «Wealth – Potential – Development»

    Directory of Open Access Journals (Sweden)

    Silantiev Oleh I.

    2017-08-01

    Full Text Available The article is aimed at identifying possibilities for improving theoretical approaches to understanding the contemporary processes in the development of macroeconomic systems and the formation of value of wealth. A conceptual-categorial analysis of the «wealth – potential – development» was carried out using the integrated, complex, system and logical approaches. The article provides improved theoretical approaches to understanding the contemporary processes that are taking place in the world and are linked to the dehumanization of society, when the value of wealth is artificially imposed. The results obtained have a wide potential for practical application, especially in the sphere of production and promotion of goods. Prospect for further research in this direction is an in-depth study on the processes of formation of value, production and consumption of wealth in the current contradictory conditions of transition to post-industrial society.

  6. Information Theoretic Subspace Clustering.

    Science.gov (United States)

    He, Ran; Wang, Liang; Sun, Zhenan; Zhang, Yingya; Li, Bo

    2016-12-01

    This paper addresses the problem of grouping the data points sampled from a union of multiple subspaces in the presence of outliers. Information theoretic objective functions are proposed to combine structured low-rank representations (LRRs) to capture the global structure of data and information theoretic measures to handle outliers. In theoretical part, we point out that group sparsity-induced measures ( l 2,1 -norm, l α -norm, and correntropy) can be justified from the viewpoint of half-quadratic (HQ) optimization, which facilitates both convergence study and algorithmic development. In particular, a general formulation is accordingly proposed to unify HQ-based group sparsity methods into a common framework. In algorithmic part, we develop information theoretic subspace clustering methods via correntropy. With the help of Parzen window estimation, correntropy is used to handle either outliers under any distributions or sample-specific errors in data. Pairwise link constraints are further treated as a prior structure of LRRs. Based on the HQ framework, iterative algorithms are developed to solve the nonconvex information theoretic loss functions. Experimental results on three benchmark databases show that our methods can further improve the robustness of LRR subspace clustering and outperform other state-of-the-art subspace clustering methods.

  7. Theoretical Mechanics Theoretical Physics 1

    CERN Document Server

    Dreizler, Reiner M

    2011-01-01

    After an introduction to basic concepts of mechanics more advanced topics build the major part of this book. Interspersed is a discussion of selected problems of motion. This is followed by a concise treatment of the Lagrangian and the Hamiltonian formulation of mechanics, as well as a brief excursion on chaotic motion. The last chapter deals with applications of the Lagrangian formulation to specific systems (coupled oscillators, rotating coordinate systems, rigid bodies). The level of this textbook is advanced undergraduate. The authors combine teaching experience of more than 40 years in all fields of Theoretical Physics and related mathematical disciplines and thorough knowledge in creating advanced eLearning content. The text is accompanied by an extensive collection of online material, in which the possibilities of the electronic medium are fully exploited, e.g. in the form of applets, 2D- and 3D-animations. - A collection of 74 problems with detailed step-by-step guidance towards the solutions. - A col...

  8. Developing a theoretical framework to illustrate associations among patient satisfaction, body image and quality of life for women undergoing breast reconstruction.

    Science.gov (United States)

    Fingeret, Michelle Cororve; Nipomnick, Summer W; Crosby, Melissa A; Reece, Gregory P

    2013-10-01

    Within the field of breast reconstruction there is increasing focus on patient-reported outcomes related to satisfaction, body image, and quality of life. These outcomes are deemed highly relevant because the primary goal of breast reconstruction is to recreate the appearance of a breast (or breasts) that is satisfying to the patient. Prominent researchers have suggested the need to develop improved standards for outcome evaluation which can ultimately benefit patients as well as physicians. The purpose of this article is to summarize key findings in the area of patient-reported outcomes for breast reconstruction and introduce a theoretical framework for advancing research in this field. We conducted an extensive literature review of outcome studies for breast reconstruction focusing on patient-reported results. We developed a theoretical framework illustrating core patient-reported outcomes related to breast reconstruction and factors associated with these outcomes. Our theoretical model highlights domains and distinguishing features of patient satisfaction, body image, and quality of life outcomes for women undergoing breast reconstruction. This model further identifies a broad range of variables (e.g., historical/premorbid influences, disease and treatment-related factors) that have been found to influence patient-reported outcomes and need to be taken into consideration when designing future research in this area. Additional attention is given to examining the relationship between patient reported outcomes and outside evaluation of breast reconstruction. Our proposed theoretical framework suggests key opportunities to expand research in this area with the goal of optimizing body image adjustment, satisfaction, and psychosocial outcomes for the individual patient. Copyright © 2013 Elsevier Ltd. All rights reserved.

  9. [Development and test-theoretical analysis of an instrument for data collection on patients' preferences and experiences concerning participation in nursing care decisions in acute hospitals].

    Science.gov (United States)

    Smoliner, Andrea; Hantikainen, Virpi; Mayer, Hanna; Ponocny-Seliger, Elisabeth; Them, Christa

    2009-12-01

    Patient orientation and patient participation are important aspects of modern health care and should be taken into consideration in the context of nursing care decision-making. The concept of evidence-based nursing also includes patient preferences in participation on decision-making, an area, however, which has not been adequately investigated so far. The aim of the present study was the development and testing of an instrument in German language for collecting data on patients' preferences and the experience of patients regarding their participation in nursing care decision-making in acute hospitals. The generation of items was based on available literature and in collaboration with specialists, using the theoretical model of Charles, Gafni and Whelan (1999). For testing the instrument, data was collected on 967 adult patients in surgical and medical wards of five hospitals in Vienna from October 2007 to March 2008. Test theoretical analyses included checking internal consistency, construct validity and criterion validity. The reliability of the scale preference and experience were confirmed by Cronbach's alpha (> or = 0.84) and the results of item analysis. The construct validity was supported by representing the decision model in the data. The criterion validity (concordant and discriminant validity) was tested with the two external criterions of subjective satisfaction with the information provided and decision making, and was supported by the results both at the level of total scores and at the level of item scores. In summary, the developed instrument represents an adequately reliable and valid test-theoretic, and also model-theoretic instrument for research in the field of evidence-based nursing. Therefore it is capable of gathering new knowledge on patients' preferences on participation in nursing care decision making.

  10. DEVELOPING MEASURES TO IMPROVE STRENGTH INDICES OF SUPPORTING STRUCTURES FOR HEAD CARS OF DIESEL TRAINS DR1A ON THE BASIS OF EXPERIMENTAL-AND-THEORETICAL WORKS

    Directory of Open Access Journals (Sweden)

    O. M. Bondarev

    2014-11-01

    Full Text Available Purpose. The objective is to determine the stress-strain state of supporting structures of the head car body and the traction transmission unit, which can be created in the operation of emergency situations, and to develop the measures aimed at improving the stress-strain state of these elements. Methodology. In order to achieve this objective, in performing the work an experimental determination of efforts and stress levels in the most loaded elements of supporting structures as well as the traction transmission units was conducted; design models for the theoretical determination of stress and effort levels were developed. Findings. Based on the analysis of the calculation results the best options for the upgrades, which have been put into the basis of proposals aimed at improving the strength indices, were revealed. Originality. Based on the experimental and theoretical studies, scientific monitoring of development works on modernization and improvement of strength indices of supporting structures of head cars of diesel trains DR1A was performed. Practical value. The technical solution to the measures, which are to be carried out beyond the limits of assigned operation lifetime for diesel train of the series specified was developed and transferred to the Ukrzaliznytsia experts to introduce the proposed measures on improving the strength indices.

  11. The Difficulty of Climate Change Adaptation in Manufacturing Firms: Developing an Action-Theoretical Perspective on the Causality of Adaptive Inaction

    Directory of Open Access Journals (Sweden)

    Ulrike Meinel

    2018-02-01

    measures, and of (d conducting adaptations despite cross-tier dependencies in supply chains. Finally, the study shows how the propositions can be tested and outlines a research agenda based on the developed theoretical suggestions.

  12. Back to the basics: identifying positive youth development as the theoretical framework for a youth drug prevention program in rural Saskatchewan, Canada amidst a program evaluation.

    Science.gov (United States)

    Dell, Colleen Anne; Duncan, Charles Randy; DesRoches, Andrea; Bendig, Melissa; Steeves, Megan; Turner, Holly; Quaife, Terra; McCann, Chuck; Enns, Brett

    2013-10-22

    Despite endorsement by the Saskatchewan government to apply empirically-based approaches to youth drug prevention services in the province, programs are sometimes delivered prior to the establishment of evidence-informed goals and objectives. This paper shares the 'preptory' outcomes of our team's program evaluation of the Prince Albert Parkland Health Region Mental Health and Addiction Services' Outreach Worker Service (OWS) in eight rural, community schools three years following its implementation. Before our independent evaluation team could assess whether expectations of the OWS were being met, we had to assist with establishing its overarching program goals and objectives and 'at-risk' student population, alongside its alliance with an empirically-informed theoretical framework. A mixed-methods approach was applied, beginning with in-depth focus groups with the OWS staff to identify the program's goals and objectives and targeted student population. These were supplemented with OWS and school administrator interviews and focus groups with school staff. Alignment with a theoretical focus was determined though a review of the OWS's work to date and explored in focus groups between our evaluation team and the OWS staff and validated with the school staff and OWS and school administration. With improved understanding of the OWS's goals and objectives, our evaluation team and the OWS staff aligned the program with the Positive Youth Development theoretical evidence-base, emphasizing the program's universality, systems focus, strength base, and promotion of assets. Together we also gained clarity about the OWS's definition of and engagement with its 'at-risk' student population. It is important to draw on expert knowledge to develop youth drug prevention programming, but attention must also be paid to aligning professional health care services with a theoretically informed evidence-base for evaluation purposes. If time does not permit for the establishment of

  13. On the Development of a Theory of Traveler Attitude-Behavior Interrelationships : Volume 2. Theoretical and Empirical Findings.

    Science.gov (United States)

    1978-08-01

    The second volume of this final report presents conceptual and empirical findings which support the development of a theory of traveler attitude-behavior interrelationships. Such a theory will be useful in the design of transport systems and operatin...

  14. A theoretical and practical contribution to supply chain robustness:developing a schema for robustness in dyads

    OpenAIRE

    Durach, Christian F.

    2016-01-01

    Published in print by Universitätsverlag der TU Berlin, ISBN 978-3-7983-2812-9 (ISSN 1865-3170) This doctoral thesis develops four individual research studies on supply chain robustness. The overall goal of these studies is to develop a conceptual framework of supply chain robustness by consolidating current literature in the field, and, drawing on that framework, to construct a schema of determinants that facilitate robustness in buyer-supplier relationships. This research is motivated by...

  15. A theoretical model for predicting neutron fluxes for cyclic Neutron ...

    African Journals Online (AJOL)

    A theoretical model has been developed for prediction of thermal neutron fluxes required for cyclic irradiations of a sample to obtain the same activity previously used for the detection of any radionuclide of interest. The model is suitable for radiotracer production or for long-lived neutron activation products where the ...

  16. A New Approach for Modeling Darrieus-Type Vertical Axis Wind Turbine Rotors Using Electrical Equivalent Circuit Analogy: Basis of Theoretical Formulations and Model Development

    Directory of Open Access Journals (Sweden)

    Pierre Tchakoua

    2015-09-01

    Full Text Available Models are crucial in the engineering design process because they can be used for both the optimization of design parameters and the prediction of performance. Thus, models can significantly reduce design, development and optimization costs. This paper proposes a novel equivalent electrical model for Darrieus-type vertical axis wind turbines (DTVAWTs. The proposed model was built from the mechanical description given by the Paraschivoiu double-multiple streamtube model and is based on the analogy between mechanical and electrical circuits. This work addresses the physical concepts and theoretical formulations underpinning the development of the model. After highlighting the working principle of the DTVAWT, the step-by-step development of the model is presented. For assessment purposes, simulations of aerodynamic characteristics and those of corresponding electrical components are performed and compared.

  17. Masculinities, Attachment Theory and Transformative Learning: A Discussion of Some Theoretical Considerations for Developing an Emotionally Secure Teaching Praxis

    Science.gov (United States)

    Carberry, Damien

    2017-01-01

    This paper situates education as an integral component of the overall prison rehabilitation process. The article discusses how an educational practitioner's knowledge of attachment theory and masculinities can be utilized to develop a secure methodological teaching environment in the classroom of a prison education unit and create a space where…

  18. Commentary: The Development of Hippocampal-Dependent Memory Functions: Theoretical Comments on Jabès and Nelson Review (2015)

    Science.gov (United States)

    Bachevalier, Jocelyne

    2015-01-01

    Studies investigating the development of memory processes and their neural substrates have flourished over the past two decades. The review by Jabès and Nelson (2015) adds an important piece to our understanding of the maturation of different elements and circuits within the hippocampal system and their association with the progressive development…

  19. The Development of Subordinate Clauses in German and Swedish as L2s: A Theoretical and Methodological Camparison

    Science.gov (United States)

    Baten, Kristof; Håkansson, Gisela

    2015-01-01

    In this article, we aim to contribute to the debate about the use of subordination as a measure of language proficiency. We compare two theories of SLA--specifically, processability theory (PT; Pienemann, 1998) and dynamic systems theory (DST; de Bot, Lowie, & Verspoor, 2007)--and, more particularly, how they address the development of…

  20. INFANTILISM: THEORETICAL CONSTRUCT AND OPERATIONALIZATION

    Directory of Open Access Journals (Sweden)

    Yelena V. Sabelnikova

    2016-01-01

    Full Text Available The aim of the presented research is to define and operationalize theoretically the concept of infantilism and its construct. The content of theoretical construct «infantilism» is analyzed. Methods. The methods of theoretical research involve analysis and synthesis. The age and content criteria are analysed in the context of childhood and adulthood. The traits which can be interpreted as adult infantile traits are described. Results. The characteristics of adult infantilism in modern world taking into account the increasing of information flows and socio-economic changes are defined. The definition of the concept «infantilism» including its main features is given. Infantilism is defined as the personal organization including features and models of the previous age period not adequate for the real age stage with emphasis on immaturity of the emotional and volitional sphere. Scientific novelty. The main psychological characteristics of adulthood are described as the reflection, requirement to work and professional activity, existence of professional self-determination, possession of labor skills, need for selfrealization, maturity of the emotional and volitional sphere. As objective adulthood characteristics are considered the following: transition to economic and territorial independence of a parental family, and also development of new social roles, such as a worker, spouse, and parent. Two options of a possible operationalization of concept are allocated: objective (existence / absence in real human life of objective criteria of adulthood and subjective (the self-report on subjective feeling of existence / lack of psychological characteristics of adulthood. Practical significance consists in a construct operationalization of «infantilism» which at the moment has so many interpretations. That operationalization is necessary for the further analysis and carrying out various researches. 

  1. A mathematical approach to research problems of science and technology theoretical basis and developments in mathematical modeling

    CERN Document Server

    Ei, Shin-ichiro; Koiso, Miyuki; Ochiai, Hiroyuki; Okada, Kanzo; Saito, Shingo; Shirai, Tomoyuki

    2014-01-01

    This book deals with one of the most novel advances in mathematical modeling for applied scientific technology, including computer graphics, public-key encryption, data visualization, statistical data analysis, symbolic calculation, encryption, error correcting codes, and risk management. It also shows that mathematics can be used to solve problems from nature, e.g., slime mold algorithms. One of the unique features of this book is that it shows readers how to use pure and applied mathematics, especially those mathematical theory/techniques developed in the twentieth century, and developing now, to solve applied problems in several fields of industry. Each chapter includes clues on how to use "mathematics" to solve concrete problems faced in industry as well as practical applications. The target audience is not limited to researchers working in applied mathematics and includes those in engineering, material sciences, economics, and life sciences.

  2. Effects of starvation on intermolt development in Calanus finmarchicus copepodites: a comparison between theoretical models and field studies1

    Science.gov (United States)

    Crain, Jennifer A.; Miller, Charles B.

    Campbell et al . (Deep Sea Research II, 48 (2001) 531) have shown that there was a localized starvation event affecting Calanus finmarchicus on the southern flank of Georges Bank in April 1997. Growth and molting rates of this dominant copepod were reduced. We have used the morphology of tooth development in field-collected samples to show that this starvation affected animals living continuously in the field, as well as those in Campbell et al .'s experimental tanks. Assuming a point of reserve saturation (PRS) response of Calanus to food limitation, and correspondence between PRS and advance from the postmolt jaw facies, the proportion of individuals with postmolt jaws should increase in all copepodite stages under starvation. Individuals that have developed past PRS should molt to the next stage, acquiring postmolt facies. Thus, the fraction of postmolt jaws should increase, while the fraction of jaws in later phases should decrease. This was observed for a drifter-marked station over five days. Numerical simulations of jaw phase distributions expected under full nutrition, and both total and patchy starvation were generated from individual-based models of development. Proportions of copepodites in postmolt phase do not increase with full nutrition. A simulation of a total starvation event showed a marked increase in postmolts during food limitation, but the increase was more extreme than the field data. A modification of the starvation simulation, representing patchy feeding conditions, matched the level of increase of postmolt individuals in all stages that was observed in the field samples.

  3. Three-dimensional multiphase flow computational fluid dynamics models for proton exchange membrane fuel cell: A theoretical development

    Directory of Open Access Journals (Sweden)

    Jean-Paul Kone

    2017-03-01

    Full Text Available A review of published three-dimensional, computational fluid dynamics models for proton exchange membrane fuel cells that accounts for multiphase flow is presented. The models can be categorized as models for transport phenomena, geometry or operating condition effects, and thermal effects. The influences of heat and water management on the fuel cell performance have been repeatedly addressed, and these still remain two central issues in proton exchange membrane fuel cell technology. The strengths and weaknesses of the models, the modelling assumptions, and the model validation are discussed. The salient numerical features of the models are examined, and an overview of the most commonly used computational fluid dynamic codes for the numerical modelling of proton exchange membrane fuel cells is given. Comprehensive three-dimensional multiphase flow computational fluid dynamic models accounting for the major transport phenomena inside a complete cell have been developed. However, it has been noted that more research is required to develop models that include among other things, the detailed composition and structure of the catalyst layers, the effects of water droplets movement in the gas flow channels, the consideration of phase change in both the anode and the cathode sides of the fuel cell, and dissolved water transport.

  4. Can an Analysis of the Contrast Between pre-Galilean and Newtonian Theoretical Frameworks Help Students Develop a Scientific Mindset

    Science.gov (United States)

    Kalman, Calvin S.; Aulls, Mark W.

    This study examines a course in which students use two writing activities and collaborative group activities to examine the conceptual structure of the calculus-based introductory Physics course. Students are presented with two alternative frameworks; pre-Galilean Physics and Newtonian Physics. The idea of the course design is that students would at first view the frameworks almost in a theatrical sense as a view of a drama involving a conflict of actors;Aristotle, Galileo, Newton and others occurring a long time ago. As participants passing through a series of interventions, the students become aware that the frameworks relate concepts from different parts of the course and learn to evaluate the two alternative frameworks. They develop a scientific mindset changing their outlook on the course material from the viewpoint that it consists of a tool kit of assorted practices, classified according to problem type, to the viewpoint that it comprises a connected structure of concepts.

  5. Applied, theoretical modeling of space-based assembly, using expert system architecture for computer-aided engineering tool development

    Science.gov (United States)

    Jolly, Steven Douglas

    1992-01-01

    The challenges associated with constructing interplanetary spacecraft and space platforms in low earth orbit are such that it is imperative that comprehensive, preliminary process planning analyses be completed before committing funds for Phase B design (detail design, development). Phase A and 'pre-Phase A' design activities will commonly address engineering questions such as mission-design structural integrity, attitude control, thermal control, etc. But the questions of constructability, maintainability and reliability during the assembly phase usually go unaddressed until the more mature stages of design (or very often production) are reached. This is an unacceptable strategy for future space missions whether they be government or commercial ventures. After interviews with expert Aerospace and Construction industry planners a new methodology was formulated and a Blackboard Metaphor Knowledge-based Expert System synthesis model has been successfully developed which can decompose interplanetary vehicles into deliverable orbital subassemblies. Constraint propagation, including launch vehicle payload shroud envelope, is accomplished with heuristic and numerical algorithms including a unique adaptation of a reasoning technique used by Stanford researchers in terrestrial automated process planning. The model is a hybrid combination of rule and frame-based representations, designed to integrate into a Computer-Aided Engineering (CAE) environment. Emphasis is placed on the actual joining, rendezvous, and refueling of the orbiting, dynamic spacecraft. Significant results of this new methodology upon a large Mars interplanetary spacecraft (736,000 kg) designed by Boeing, show high correlation to manual decomposition and planning analysis studies, but at a fraction of the time, and with little user interaction. Such Computer-Aided Engineering (CAE) tools would greatly leverage the designers ability to assess constructability.

  6. Theoretical modeling developed to evaluate the hardness and reduced modulus for the C/a-Si composite film using nanoindentation tests

    International Nuclear Information System (INIS)

    Han, C.-F.; Lin, J.-F.; Chung, C.-K.; Wu, B.-H.

    2008-01-01

    A general mechanical model, which is composed of the mechanical models employed to describe the contact behaviors and deformations arising in all layers (including the substrate), is successfully developed in the present study for multilayer specimens in order to evaluate the contact projected area by a theoretical model, and thus the hardness and reduced modulus, using nanoindentation tests. The governing differential equations for the depth solutions of the indenter tip formed at all layers of the specimen under their contact load are developed individually. The influence of the material properties of the substrate on a multilayer specimen's hardness and reduced modulus at various indentation depths can thus be evaluated. Transition and pop-in occurred at depths near, but still before, the C (top layer)/a-Si (buffer layer) interface and the a-Si/Si (substrate) interface, respectively. Using the present analysis, the depths corresponding to the transition and pop-in behaviors can be predicted effectively

  7. Theoretical principles of phyto remedial soil technologies development of Semipalatinsk test site with a use of microorganisms

    International Nuclear Information System (INIS)

    Ajdarkhanova, G.S.; Ajdasova, S.S.; Zhubanova, A.A.; Mukhitdinov, N.M.

    1999-01-01

    Radioecological investigations of soils and vegetation at different area of Semipalatinsk test site allowed discovering an uneven contamination of eco environment by radionuclides, impact of this factor on anatomomorphological parameters and plants growing - local floral forms. The investigations showed that some cultures accumulated radionuclides in significant concentrations. Radionuclide contamination of particular cultures with 137 Cs features a wide range: Juiperus sabina [8 Bq/kg]- Leonurus quinquelobatus [13 Bq/kg]- Gallium aparine [55-916 Bq/kg]- Achillea millefolium [398 Bq/kg]- Sanquisorba officinalis [75 000 Bq/kg]- Rumex confertus [ 74-160 000 Bq/kg].This feature allows developing a new technology of areas decontamination, which is phyto remediation. The main first step in this technology implies searching for plants - hyper accumulators of radionuclides, and the basic condition is a possibility for selected species of a chosen area to grow.The experience of foreign researchers (USA, Ukraine) allows to hope that it is possible, within 5-10 years and using the phyto remedial measures, to restore large areas of farmland in Kazakstan, contaminated with radionuclides

  8. [The evolution of the thought of "Yojo" and its function as a theoretical bases for development of health culture].

    Science.gov (United States)

    Takizawa, T

    1997-12-01

    The purpose of this monograph is to clarify the role of "Yojo" on public health in Japan. Yojo is a traditional concept which has been used for the nourishment of life in Eastern cultures. These thoughts on Yojo were published under the title of Yojoron in ancient China. Yojoron was imported into Japan somewhere from the 7th to 10th centuries. In ancient and medievel Japan, there were few writings about Yojoron. However during the Edo period, Yojoron suddenly flourished. Dominant in Yojoron was diet. Issues such as exercise, mental control, and sexual restraint were also considered in the Bunka, Bunsei, and Tenpo periods (the first half of 19th century). Yojoron included not only matters of physical and mental health but various other matters regarding the general quality of life such as morality, domestic economy, culture and education. However other health-related issues such as longevity and absence of diseases, showed a simultaneous decrease in the importance. Also principles of Yojoron such as restraint and austerity in behaviour were liberalized. These trends indicated the basic shift in Yojoron from personal health care to self-culture for the entire quality of life. Writings on Yojoron were still published after the Meiji restoration (1868). The principle of Yojoron in the Meiji period was based on both social Darwinism and social revolution theories. The primary concerns of Yojoron were consolidated into achieving health and longevity by personal effort. Therefore Yojoron can be seen as the theory of lifestyle and quality of life in traditional societies in Japan. The public saw in Yojoron a design for living through improved health. This meant the Yojoron was a very refined art of living, and therefore, implies that health care should be integrated with entire self-development. The principle of Yojo offers the ideal foundation of 'health culture' in modern societies.

  9. Development of an amygdalocentric neurocircuitry-reactive aggression theoretical model of emergence delirium in posttraumatic stress disorder: an integrative literature review.

    Science.gov (United States)

    McLott, Jason; Jurecic, Jerry; Hemphill, Luke; Dunn, Karen S

    2013-10-01

    The purposes of this integrative literature review were to (1) present a synopsis of current literature describing posttraumatic stress disorder (PTSD), the amygdalocentric neurocircuitry, emergence delirium, reactive aggression, and the interaction of general anesthetics and the amygdalocentric neurocircuitry; (2) synthesize this evidence; and (3) develop a new theoretical model that can be tested in future research studies. Over the past decade, a dramatic rise in PTSD among veterans has been reported because of recent combat deployments. Modern anesthetics alter the function of the amygdalocentric neurocircuitry to produce amnesia and sedation. The etiology of emergence delirium is poorly understood, and the condition is uncommon outside the pediatric population. Emergence delirium among patients with PTSD, however, has been reported by military nurse anesthetists. To date, there have been no scientific studies conducted to identify the cause of emergence delirium in combat veterans with PTSD. This new theoretical model may explain why noxious stimuli at the time of emergence may stimulate the thalamus, leading to activation of an uninhibited amygdalocentric neurocircuitry. Because of the loss of top-down inhibition, the hyperactive amygdala then stimulates the hypothalamus, which is responsible for creating an increase in excitatory activity in the unconscious patient, resulting in emergence delirium.

  10. Maize sugary enhancer1 (se1) is a presence-absence variant of a previously uncharacterized gene and development of educational videos to raise the profile of plant breeding and improve curricula

    Science.gov (United States)

    Haro von Mogel, Karl J.

    Carbohydrate metabolism is a biologically, economically, and culturally important process in crop plants. Humans have selected many crop species such as maize (Zea mays L.) in ways that have resulted in changes to carbohydrate metabolic pathways, and understanding the underlying genetics of this pathway is therefore exceedingly important. A previously uncharacterized starch metabolic pathway mutant, sugary enhancer1 (se1), is a recessive modifier of sugary1 (su1) sweet corn that increases the sugar content while maintaining an appealing creamy texture. This allele has been incorporated into many sweet corn varieties since its discovery in the 1970s, however, testing for the presence of this allele has been difficult. A genetic stock was developed that allowed the presence of se1 to be visually scored in segregating ears, which were used to genetically map se1 to the deletion of a single gene model located on the distal end of the long arm of chromosome 2. An analysis of homology found that this gene is specific to monocots, and the gene is expressed in the endosperm and developing leaf. The se1 allele increased water soluble polysaccharide (WSP) and decreased amylopectin in maize endosperm, but there was no overall effect on starch content in mature leaves due to se1. This discovery will lead to a greater understanding of starch metabolism, and the marker developed will assist in breeding. There is a present need for increased training for plant breeders to meet the growing needs of the human population. To raise the profile of plant breeding among young students, a series of videos called Fields of Study was developed. These feature interviews with plant breeders who talk about what they do as plant breeders and what they enjoy about their chosen profession. To help broaden the education of students in college biology courses, and assist with the training of plant breeders, a second video series, Pollination Methods was developed. Each video focuses on one or two

  11. Theoretically Guided Analytical Method Development and Validation for the Estimation of Rifampicin in a Mixture of Isoniazid and Pyrazinamide by UV Spectrophotometer

    Science.gov (United States)

    Khan, Mohammad F.; Rita, Shamima A.; Kayser, Md. Shahidulla; Islam, Md. Shariful; Asad, Sharmeen; Bin Rashid, Ridwan; Bari, Md. Abdul; Rahman, Muhammed M.; Al Aman, D. A. Anwar; Setu, Nurul I.; Banoo, Rebecca; Rashid, Mohammad A.

    2017-01-01

    A simple, rapid, economic, accurate, and precise method for the estimation of rifampicin in a mixture of isoniazid and pyrazinamide by UV spectrophotometeric technique (guided by the theoretical investigation of physicochemical properties) was developed and validated. Theoretical investigations revealed that isoniazid and pyrazinamide both were freely soluble in water and slightly soluble in ethyl acetate whereas rifampicin was practically insoluble in water but freely soluble in ethyl acetate. This indicates that ethyl acetate is an effective solvent for the extraction of rifampicin from a water mixture of isoniazid and pyrazinamide. Computational study indicated that pH range of 6.0–8.0 would favor the extraction of rifampicin. Rifampicin is separated from isoniazid and pyrazinamide at pH 7.4 ± 0.1 by extracting with ethyl acetate. The ethyl acetate was then analyzed at λmax of 344.0 nm. The developed method was validated for linearity, accuracy and precision according to ICH guidelines. The proposed method exhibited good linearity over the concentration range of 2.5–35.0 μg/mL. The intraday and inter-day precision in terms of % RSD ranged from 1.09 to 1.70% and 1.63 to 2.99%, respectively. The accuracy (in terms of recovery) of the method varied from of 96.7 ± 0.9 to 101.1 ± 0.4%. The LOD and LOQ were found to be 0.83 and 2.52 μg/mL, respectively. In addition, the developed method was successfully applied to determine rifampicin combination (isoniazid and pyrazinamide) brands available in Bangladesh. PMID:28503547

  12. Theoretically Guided Analytical Method Development and Validation for the Estimation of Rifampicin in a Mixture of Isoniazid and Pyrazinamide by UV Spectrophotometer.

    Science.gov (United States)

    Khan, Mohammad F; Rita, Shamima A; Kayser, Md Shahidulla; Islam, Md Shariful; Asad, Sharmeen; Bin Rashid, Ridwan; Bari, Md Abdul; Rahman, Muhammed M; Al Aman, D A Anwar; Setu, Nurul I; Banoo, Rebecca; Rashid, Mohammad A

    2017-01-01

    A simple, rapid, economic, accurate, and precise method for the estimation of rifampicin in a mixture of isoniazid and pyrazinamide by UV spectrophotometeric technique (guided by the theoretical investigation of physicochemical properties) was developed and validated. Theoretical investigations revealed that isoniazid and pyrazinamide both were freely soluble in water and slightly soluble in ethyl acetate whereas rifampicin was practically insoluble in water but freely soluble in ethyl acetate. This indicates that ethyl acetate is an effective solvent for the extraction of rifampicin from a water mixture of isoniazid and pyrazinamide. Computational study indicated that pH range of 6.0-8.0 would favor the extraction of rifampicin. Rifampicin is separated from isoniazid and pyrazinamide at pH 7.4 ± 0.1 by extracting with ethyl acetate. The ethyl acetate was then analyzed at λ max of 344.0 nm. The developed method was validated for linearity, accuracy and precision according to ICH guidelines. The proposed method exhibited good linearity over the concentration range of 2.5-35.0 μg/mL. The intraday and inter-day precision in terms of % RSD ranged from 1.09 to 1.70% and 1.63 to 2.99%, respectively. The accuracy (in terms of recovery) of the method varied from of 96.7 ± 0.9 to 101.1 ± 0.4%. The LOD and LOQ were found to be 0.83 and 2.52 μg/mL, respectively. In addition, the developed method was successfully applied to determine rifampicin combination (isoniazid and pyrazinamide) brands available in Bangladesh.

  13. Topics in modern physics theoretical foundations

    CERN Document Server

    Walecka, John Dirk

    2013-01-01

    While the two previous books entitled Introduction to Modern Physics: Theoretical Foundations and Advanced Modern Physics: Theoretical Foundations exposed the reader to the foundations and frontiers of today's physics, the goal of this third volume is to cover in some detail several topics omitted in the essentially linear progression of the first two. This book is divided into three parts. Part 1 is on quantum mechanics. Analytic solutions to the Schrödinger equation are developed for some basic systems. The analysis is then formalized, concluding with a set of postulates for the theory. Part 2 is on applications of quantum mechanics: approximation methods for bound states, scattering theory, time-dependent perturbation theory, and electromagnetic radiation and quantum electrodynamics. Part 3 covers some selected topics in relativistic quantum field theory: discrete symmetries, the Heisenberg picture, and the Feynman rules for quantum chromodynamics. The three volumes in this series taken together provide ...

  14. Development, Implementation, and Evaluation of an Interdisciplinary Theory- and Evidence-Based Intervention to Prevent Childhood Obesity: Theoretical and Methodological Lessons Learned

    Directory of Open Access Journals (Sweden)

    Gill A. ten Hoor

    2017-12-01

    Full Text Available Overweight and obesity in children and adolescents is seen as a global health challenge and a priority for prevention (1. To solve such a health issue, we need full understanding of the related health behaviors (and underlying beliefs, and understanding of the biological mechanisms that cause or can prevent the issue. However, for overweight and obesity, drawing a full picture of the exact problem (and the subsequent solution is difficult. In this paper, we describe how we used Intervention Mapping to develop a theory and evidence-based prevention program targeting overweight and obesity and how we investigated the 1-year efficacy of this program on body composition and physical activity of adolescents. A helpful tool, theoretical, and methodological lessons learned are given from our attempt to contribute to solving the obesity problem.

  15. Construindo um modelo de sistema de cuidados Construyendo un modelo de sistema de cuidados Developing an explanatory theoretical model of system of care

    Directory of Open Access Journals (Sweden)

    Alacoque Lorenzini Erdmann

    2007-06-01

    Full Text Available OBJETIVO: Construir um modelo teórico explicativo de Sistema de Cuidados. METODO: Estudo exploratório qualitativo apoiado nos pressupostos da Grounded Theory. Participaram do estudo 15 profissionais e os dados foram coletados por entrevista aberta. RESULTADOS: O Modelo teórico foi delimitado a partir do fenômeno Construindo o Sistema Complexo de Cuidados determinado pelas categorias: Convivendo com a dinamicidade do sistema de cuidados e Organizando o sistema de cuidados a partir de múltiplas interações. CONCLUSÃO: O modelo de sistema de cuidados apresentou-se como sistema vital e dinâmico construído a partir de redes interacionais de vários saberes do agir humano expresso pelo trabalho compartilhado, multidisciplinar e em equipe.OBJETIVO: Construir un modelo teórico explicativo de Sistema de Cuidados. MÉTODO: Se trata de un estudio cualitativo exploratorio apoyado en las premisas de la Teoría Fundamentada en los Datos. Participaron del estudio 15 profesionales. Los datos fueron recolectados por medio de una entrevista abierta. RESULTADOS: El modelo teórico se delimitó al fenómeno Construyendo el Sistema Complejo de Cuidados determinado por las categorías: Viviendo junto con la dinamicidad del sistema de cuidados y Organizando el sistema de cuidados a partir de interacciones múltiples. CONCLUSIÓN: El modelo de sistema de cuidados se presenta como un sistema vital y dinámico construido a partir de redes de interacción de conocimientos del actuar humano expresado en el trabajo conjunto, multidisciplinario y en equipo.OBJECTIVE: To develop an explanatory theoretical model of the system of care. METHOD: Grounded theory served as the conceptual framework to conduct this qualitative exploratory study. Unstructured interviews were conducted among 15 care professionals. RESULTS: The theoretical model was delimited from the phenomenon "building complex system of care" as determined by the following categories: "dealing with a

  16. Almost Free Modules Set-Theoretic Methods

    CERN Document Server

    Eklof, PC

    1990-01-01

    This is an extended treatment of the set-theoretic techniques which have transformed the study of abelian group and module theory over the last 15 years. Part of the book is new work which does not appear elsewhere in any form. In addition, a large body of material which has appeared previously (in scattered and sometimes inaccessible journal articles) has been extensively reworked and in many cases given new and improved proofs. The set theory required is carefully developed with algebraists in mind, and the independence results are derived from explicitly stated axioms. The book contains exe

  17. [Placental complications after a previous cesarean section].

    Science.gov (United States)

    Milosević, Jelena; Lilić, Vekoslav; Tasić, Marija; Radović-Janosević, Dragana; Stefanović, Milan; Antić, Vladimir

    2009-01-01

    The incidence of cesarean section has been rising in the past 50 years. With the increased number of cesarean sections, the number of pregnancies with the previous cesarean section rises as well. The aim of this study was to establish the influence of the previous cesarean section on the development of placental complications: placenta previa, placental abruption and placenta accreta, as well as to determine the influence of the number of previous cesarean sections on the complication development. The research was conducted at the Clinic of Gynecology and Obstetrics in Nis covering 10-year-period (from 1995 to 2005) with 32358 deliveries, 1280 deliveries after a previous cesarean section, 131 cases of placenta previa and 118 cases of placental abruption. The experimental groups was presented by the cases of placenta previa or placental abruption with prior cesarean section in obstetrics history, opposite to the control group having the same conditions but without a cesarean section in medical history. The incidence of placenta previa in the control group was 0.33%, opposite to the 1.86% incidence after one cesarean section (pcesarean sections and as high as 14.28% after three cesarean sections in obstetric history. Placental abruption was recorded as placental complication in 0.33% pregnancies in the control group, while its incidence was 1.02% after one cesarean section (pcesarean sections. The difference in the incidence of intrapartal hysterectomy between the group with prior cesarean section (0.86%) and without it (0.006%) shows a high statistical significance (pcesarean section is an important risk factor for the development of placental complications.

  18. Community of practice as a collective way of learning and development of practices and knowledge of the family health strategy: a theoretical study

    Directory of Open Access Journals (Sweden)

    Ana Ecilda Lima Ellery

    2012-06-01

    Full Text Available Objective: Present and discuss the contribution of the concept of Community of Practice (CP, while collective space of learning and development of knowledge and practice in multidisciplinary teams of Family Health Strategy. Methods: Theoretical study through nonsystematic literature reviews the theme of “Communities of Practice” in the work of social researchers Jean Lave and Etienne Wenger, who developed this concept, completed with studies on the same topic from the research in online databases. Results: A CP is characterized by a group of people who forged and got engaged in a common project, sharing a repertoire, which allowed communication between them. Several effects are attributed to the experienceof working together in a CP, such as the socialization of knowledge, the interprofessional collaboration and the development of an environment conducive to reflective practice, which facilitates the conflict mediation. The theory of CP requires a major change in theconception of learning. Unlike theories that consider learning as resulting mainly from the internal process of the person, as the cognitive, the CP’s theory conceives learning through the angle of social participation. The inter-relationship developed by the CP influences the learning process, negotiation of meaning and identity formation, which results from the fact of belonging to the community and from the meaning attributed to the collaborative. Conclusion: The formation of Community of Practice in Family Health Strategy can be adevice to facilitate the construction of interdisciplinary projects, expressed by the integration of knowledge and interprofessional collaboration.

  19. Theoretical physics 5 thermodynamics

    CERN Document Server

    Nolting, Wolfgang

    2017-01-01

    This concise textbook offers a clear and comprehensive introduction to thermodynamics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series, defining macroscopic variables, such as internal energy, entropy and pressure,together with thermodynamic principles. The first part of the book introduces the laws of thermodynamics and thermodynamic potentials. More complex themes are covered in the second part of the book, which describes phases and phase transitions in depth. Ideally suited to undergraduate students with some grounding in classical mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this series cove...

  20. Theoretical physics 3 electrodynamics

    CERN Document Server

    Nolting, Wolfgang

    2016-01-01

    This textbook offers a clear and comprehensive introduction to electrodynamics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series. The first part of the book describes the interaction of electric charges and magnetic moments by introducing electro- and magnetostatics. The second part of the book establishes deeper understanding of electrodynamics with the Maxwell equations, quasistationary fields and electromagnetic fields. All sections are accompanied by a detailed introduction to the math needed. Ideally suited to undergraduate students with some grounding in classical and analytical mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful Germa...

  1. Integrating Sustainable Development in Higher Education through Experience-Based Learning: Insights from Experts in Team (EiT) for Developing a Combined Theoretical Framework

    Science.gov (United States)

    Otte, Pia Piroschka

    2016-01-01

    Universities are understood to play an essential role in the promotion of sustainable development. However, the recognition of sustainable development in higher education poses multiple challenges to the traditional higher education system. This article introduces a course concept called "Experts in Teams" (EiT) as a new platform of…

  2. Institute for Theoretical Physics

    Energy Technology Data Exchange (ETDEWEB)

    Giddings, S.B.; Ooguri, H.; Peet, A.W.; Schwarz, J.H.

    1998-06-01

    String theory is the only serious candidate for a unified description of all known fundamental particles and interactions, including gravity, in a single theoretical framework. Over the past two years, activity in this subject has grown rapidly, thanks to dramatic advances in understanding the dynamics of supersymmetric field theories and string theories. The cornerstone of these new developments is the discovery of duality which relates apparently different string theories and transforms difficult strongly coupled problems of one theory into weakly coupled problems of another theory.

  3. Business models and business model innovation: theoretical development of a conceptual, general business model framework illustrated with a case on Norwegian marine technology company Sea-Hawk Navigation AS

    OpenAIRE

    Bergh, Tom Hiis; Kahrs, Kristoffer Berg

    2015-01-01

    The fields of business models and business model innovation are relatively new as research topics, and largely unexplored in academia. Still, the study of business models has perhaps never been more important than it is today. With this paper, we seek to contribute to the further development of business model theory. In order to do so, we employ a twofold approach that is part theoretical, and part practical. The theoretical part contains an elaborate literature review of four cen...

  4. Plural economics and territorial development from the perspective of sustainable development: theoretical elements of an economic sociology and a socio-economics.

    Directory of Open Access Journals (Sweden)

    Benoît Lévesque

    2009-10-01

    Full Text Available This text focuses on the contribution that the concept of plural economics is able to make today toward the advancement of research on the viability of territorial dynamics for sustainable development. The first part of our line of argumentation is centered on clarifying the concept of plural economics, based on studies on economic and social solidarity and on proposals emerging from the New Economic Sociology and the socio-economics of territories. In the second part, the concept of sustainable development is characterized from the angle of the so-called societal paradigm and its interactions with territory and with a plural and social economics. Aligned with the critique of the premises of neo-classical economics, the author accepts the need to re-connect the economy to a broader social and ecological perspective and to seek more effective answers to the challenges raised by the planetary socio-environmental crisis.. Keywords: Sustainable territorial development, plural economics, New Economic Sociology, economics of solidarity, ecological economics.

  5. Franchise Business Model: Theoretical Insights

    OpenAIRE

    Levickaitė, Rasa; Reimeris, Ramojus

    2010-01-01

    The article is based on literature review, theoretical insights, and deals with the topic of franchise business model. The objective of the paper is to analyse peculiarities of franchise business model and its developing conditions in Lithuania. The aim of the paper is to make an overview on franchise business model and its environment in Lithuanian business context. The overview is based on international and local theoretical insights. In terms of practical meaning, this article should be re...

  6. Theoretical design and discovery of the most-promising, previously overlooked hybrid perovskite compounds

    Energy Technology Data Exchange (ETDEWEB)

    Zunger, Alex [University of Colorado Boulder; Kazmerski, Lawrence [University of Colorado Boulder; Dalpian, Gustavo [University of Colorado Boulder

    2018-03-14

    The material class of hybrid organic-inorganic perovskites (AMX3) has risen rapidly from a virtually unknown material in photovoltaic applications a short 8-years ago into 20-23% efficient thin-film solar cell devices. As promising as this class of materials is, however, there are limitations associated with its poor long-term stability, non-optimal band gap, and the presence of toxic Pb atom on the metalloid site. An Edisonian laboratory exploration (i.e., growth + characterization) via trial-and-error processes of all other candidate materials, is unpractical. Our approach uses high speed computational design and discovery to screen the ‘best of class” candidates based upon optimal functionalities.

  7. Theoretical Particle Astrophysics

    Energy Technology Data Exchange (ETDEWEB)

    Kamionkowski, Marc [Johns Hopkins Univ., Baltimore, MD (United States)

    2013-08-07

    Abstract: Theoretical Particle Astrophysics. The research carried out under this grant encompassed work on the early Universe, dark matter, and dark energy. We developed CMB probes for primordial baryon inhomogeneities, primordial non-Gaussianity, cosmic birefringence, gravitational lensing by density perturbations and gravitational waves, and departures from statistical isotropy. We studied the detectability of wiggles in the inflation potential in string-inspired inflation models. We studied novel dark-matter candidates and their phenomenology. This work helped advance the DoE's Cosmic Frontier (and also Energy and Intensity Frontiers) by finding synergies between a variety of different experimental efforts, by developing new searches, science targets, and analyses for existing/forthcoming experiments, and by generating ideas for new next-generation experiments.

  8. Culturally sensitive social practice, reality or fiction? A theoretical and comparative approach to the fundamentals of cultural competence and its development in the Social Work degree

    Directory of Open Access Journals (Sweden)

    Joaquín Guerrero-Muñoz

    2017-12-01

    Full Text Available Cultural competence in Social Work has been recognised by the National Association of Social Workers of the United States as a basic standard of the profession. The objective of this standard is for social workers to have a wide range of knowledge of the client’s culture and develop skills to provide social care and culturally sensitive services. However, cultural competence in Social Work addresses important theoretical, practical and educational difficulties. This article offers an exhaustive evaluation of the different criticisms that socially sensitive social work has received. A crucial aspect of social practice is the teaching-learning process of cultural competence. After analysing the Spanish social work degrees, this paper outlines a multidimensional, holistic and integrated approach that responds to the educational needs of our future professionals. Based on findings, we suggest the systematic inclusion of cultural competence in curricula and the generation of learning outcomes in basic components such as self-awareness, effective communication, decision making, coping situations in intercultural contexts and the understanding of different socio-cultural realities. 

  9. Theoretical Issues in Environmental Psychology

    Science.gov (United States)

    Proshansky, Harold M.

    1974-01-01

    Author addressed a central task in the development of an interdisciplinary field of inquiry into manenvironment relations: namely, theory development. He decried the lack of comprehensive theoretical reasoning that has characterized environmental research and suggested directions for expanded conceptual work. (Editor/RK)

  10. Topics in Theoretical Physics

    Energy Technology Data Exchange (ETDEWEB)

    Cohen, Andrew [Boston Univ., MA (United States); Schmaltz, Martin [Boston Univ., MA (United States); Katz, Emmanuel [Boston Univ., MA (United States); Rebbi, Claudio [Boston Univ., MA (United States); Glashow, Sheldon [Boston Univ., MA (United States); Brower, Richard [Boston Univ., MA (United States); Pi, So-Young [Boston Univ., MA (United States)

    2016-09-30

    This award supported a broadly based research effort in theoretical particle physics, including research aimed at uncovering the laws of nature at short (subatomic) and long (cosmological) distances. These theoretical developments apply to experiments in laboratories such as CERN, the facility that operates the Large Hadron Collider outside Geneva, as well as to cosmological investigations done using telescopes and satellites. The results reported here apply to physics beyond the so-called Standard Model of particle physics; physics of high energy collisions such as those observed at the Large Hadron Collider; theoretical and mathematical tools and frameworks for describing the laws of nature at short distances; cosmology and astrophysics; and analytic and computational methods to solve theories of short distance physics. Some specific research accomplishments include + Theories of the electroweak interactions, the forces that give rise to many forms of radioactive decay; + Physics of the recently discovered Higgs boson. + Models and phenomenology of dark matter, the mysterious component of the universe, that has so far been detected only by its gravitational effects. + High energy particles in astrophysics and cosmology. + Algorithmic research and Computational methods for physics of and beyond the Standard Model. + Theory and applications of relativity and its possible limitations. + Topological effects in field theory and cosmology. + Conformally invariant systems and AdS/CFT. This award also supported significant training of students and postdoctoral fellows to lead the research effort in particle theory for the coming decades. These students and fellows worked closely with other members of the group as well as theoretical and experimental colleagues throughout the physics community. Many of the research projects funded by this grant arose in response to recently obtained experimental results in the areas of particle physics and cosmology. We describe a few of

  11. Spectrophotometric determination of uranium with arsenazo previous liquid-liquid extraction and colour development in organic medium; Determinacion espectrofotometrica de uranio con arsenazo, previa extraccion y desarrollo del color en medio organico

    Energy Technology Data Exchange (ETDEWEB)

    Palomares Delgado, F.; Vera Palomino, J.; Petrement Eguiluz, J. C.

    1964-07-01

    The determination of uranium with arsenazo is hindered by a great number of cation which form stable complexes with the reactive and may given rise to serious interferences. By studying the optimum conditions of uranium the extraction be means of tributylphosphate solutions dissolved in methylisobuthylketone, under conditions for previous masking of the interfering cations, an organic extract was obtained containing all the uranium together with small amounts of iron. The possible interference derived from the latter element is avoided by reduction with hydroxylammoniumchlorid followed by complex formation of the Fe(II)-ortophenantroline compound in alcoholic medium. (Author) 17 refs.

  12. Phases and Actions of the Evolution of the Concept of Quality in Canada and Australia – A Theoretical Modelling of the Development of Knowledge in Business Performance in the XXI Century - The Approach to Excellence

    Directory of Open Access Journals (Sweden)

    Cristina Raluca Popescu

    2015-05-01

    Full Text Available In the paper “Phases and Actions of the Evolution of the Concept of Quality in Canada and Australia – A Theoretical Modelling of the Development of Knowledge in Business Performance in the XXI Century - The Approach to Excellence” the authors present the basic features of the phases and actions of the evolution of the concept of quality in Canada and Australia, as a theoretical modelling of the development of knowledge in business performance in the XXI century in order to improve the organizational processes so that excellence can be achieved.

  13. Historical and Theoretical Study of the Use of the Montessori Cylinder Block as a Screening Test Instrument for Developmental Disorders

    OpenAIRE

    我妻, 則明; AZUMA, Noriaki

    1994-01-01

    Studies investigating mental development screening tests and the Montessori cylinderblock were described. The theoretical possibility was discussed for the use of theMontessori cylinder block B type as a mental development screening test instrument.It was a theoretically unique idea to use the Montessori cylinder block B type as ascreening test instrument in measuring the child's mental development. As a result ofresearching previous studies, not only in Japan but also in other countries, the...

  14. Induced vaginal birth after previous caesarean section

    Directory of Open Access Journals (Sweden)

    Akylbek Tussupkaliyev

    2016-11-01

    Full Text Available Introduction The rate of operative birth by Caesarean section is constantly rising. In Kazakhstan, it reaches 27 per cent. Research data confirm that the percentage of successful vaginal births after previous Caesarean section is 50–70 per cent. How safe the induction of vaginal birth after Caesarean (VBAC remains unclear. Methodology The studied techniques of labour induction were amniotomy of the foetal bladder with the vulsellum ramus, intravaginal administration of E1 prostaglandin (Misoprostol, and intravenous infusion of Oxytocin-Richter. The assessment of rediness of parturient canals was conducted by Bishop’s score; the labour course was assessed by a partogram. The effectiveness of labour induction techniques was assessed by the number of administered doses, the time of onset of regular labour, the course of labour and the postpartum period and the presence of complications, and the course of the early neonatal period, which implied the assessment of the child’s condition, described in the newborn development record. The foetus was assessed by medical ultrasound and antenatal and intranatal cardiotocography (CTG. Obtained results were analysed with SAS statistical processing software. Results The overall percentage of successful births with intravaginal administration of Misoprostol was 93 per cent (83 of cases. This percentage was higher than in the amniotomy group (relative risk (RR 11.7 and was similar to the oxytocin group (RR 0.83. Amniotomy was effective in 54 per cent (39 of cases, when it induced regular labour. Intravenous oxytocin infusion was effective in 94 per cent (89 of cases. This percentage was higher than that with amniotomy (RR 12.5. Conclusions The success of vaginal delivery after previous Caesarean section can be achieved in almost 70 per cent of cases. At that, labour induction does not decrease this indicator and remains within population boundaries.

  15. Establishing Theoretical Stability and Treatment Integrity for Motivational Interviewing.

    Science.gov (United States)

    Atkinson, Cathy; Woods, Kevin

    2017-07-01

    There is increasing evidence claiming the effectiveness of motivational interviewing (MI) in promoting behavioural change. However, ongoing changes to MI theory and practice have implications for its transferability, accessibility and for the validity of previous findings. Lack of practice consistency may make its effectiveness difficult to evaluate. This paper explores the complexity of MI and issues in the development of evidence-based practice in delivery, before describing issues related to practitioner application. Theoretical and practice developments over the last 30 years are reviewed under the headings theory, practice and efficacy. Specifically, developments across the three editions of the core MI texts are examined. Findings from the literature suggest a lack of theoretical stability and practice integrity, with recent fundamental changes to the underpinning structure of MI. Issues relating to the transferability and acquisition of MI skills, consistency of delivery and mechanisms underlying change are discussed. The authors call for greater theoretical stability, more transparency over how developments are based on theoretical principles and empirical outcomes, and clearer guidance about how this informs practice development and delivery of MI.

  16. Predicting the Risk to Develop Preeclampsia in the First Trimester Combining Promoter Variant -98A/C of LGALS13 (Placental Protein 13), Black Ethnicity, Previous Preeclampsia, Obesity, and Maternal Age.

    Science.gov (United States)

    Madar-Shapiro, Liora; Karady, Ido; Trahtenherts, Alla; Syngelaki, Argryo; Akolekar, Ranjit; Poon, Liona; Cohen, Ruth; Sharabi-Nov, Adi; Huppertz, Berthold; Sammar, Marei; Juhasz, Kata; Than, Nandor Gabor; Papp, Zoltan; Romero, Roberto; Nicolaides, Kypros H; Meiri, Hamutal

    2017-07-21

    LGALS13 (placental protein 13 [PP13]) promoter DNA polymorphisms was evaluated in predicting preeclampsia (PE), given PP13's effects on hypotension, angiogenesis, and immune tolerance. First-trimester plasma samples (49 term and 18 intermediate) of PE cases matched with 196 controls were collected from King's College Hospital, London, repository. Cell-free DNA was extracted and the LGALS13 exons were sequenced after PCR amplification. Expression of LGALS13 promoter reporter constructs was determined in BeWo trophoblast-like cells with luciferase assays. Adjusted odds ratio (OR) was calculated for the A/A genotype combined with maternal risk factors. The A/A, A/C, and C/C genotypes in the -98 promoter position were in Hardy-Weinberg equilibrium in the control but not in the PE group (p 35, black ethnicity, and maternal age >40 were 15.6 and 11.0, respectively (p promoter variant had lower expression than the "-98C" variant in non-differentiated (-13%, p = 0.04) and differentiated (-26%, p promoter region position (compared to "C") and high OR calculated for the A/A genotype in the -98A/C promoter region position, history of previous PE, BMI >35, advanced maternal age >40, and black ethnicity could serve to aid in PE prediction in the first trimester. © 2017 S. Karger AG, Basel.

  17. Theoretical solid state physics

    International Nuclear Information System (INIS)

    Anon.

    1977-01-01

    Research activities at ORNL in theoretical solid state physics are described. Topics covered include: surface studies; particle-solid interactions; electronic and magnetic properties; and lattice dynamics

  18. Development and upscaling of integral sustainable energy innovations in housing : the role of practice and underlying drivers, combining theoretical perspectives for a new research agenda

    NARCIS (Netherlands)

    Hofman, Petra; Hoppe, Thomas

    2013-01-01

    The goal of this paper is to elaborate a theoretical framework and research design for further research related to the question ‘What practices and underlying drivers explain adoption of integral sustainable energy innovations in the Dutch housing sector?’. Although there are many efforts to speed

  19. Development of a modular lightweight tumour endoprosthesis with novel textile attachment points for the refixation of previously detached muscle groups: Poster presented at 18th EFORT Congress, Sports Activities & Orthopaedic Practice 31 May to 02 June 2017, Vienna

    OpenAIRE

    Grunert, Ronny; Schmidt, Michael; Kopper, Michael; Töppel, Thomas; Rädel, Thomas; Hanus, Sybille; Prietzel, Torsten

    2017-01-01

    Motivation: In tumor endoprosthetics, implants are applied to reconstruct the proximal femur. The main problems of these implants are often the high weight and the biomechanically not optimal attachment of soft tissue. The aim of this work is to solve these problems in order to develop a long-term stable biomechanically correct implant of a proximal femoral replacement. Methods Based on lightweight construction concepts from vehicle construction, a topology optimization was performed with an ...

  20. Teaching theoretical physics: The cases of Enrico Fermi and Ettore Majorana

    Science.gov (United States)

    De Gregorio, Alberto; Esposito, Salvatore

    2007-09-01

    We report on theoretical courses by Enrico Fermi and Ettore Majorana, which give evidence of the first appearance and further development of quantum mechanics teaching in Italy. On the basis of original documents, we compare Fermi and Majorana's approaches. A detailed analysis is made of Fermi's course on theoretical physics attended by Majorana in 1927-28. Three (previously unknown) programs on advanced physics courses submitted by Majorana to the University of Rome between 1933 and 1936 and the course he taught in Naples in 1938 complete our analysis. Fermi's phenomenological approach resounded in Majorana, who combined it with a deeper theoretical approach, closer to the contemporary way of presenting quantum mechanics.

  1. Is a Previously or Currently Reduced Testosterone Level in Male Patients with Type 2 Diabetes Mellitus a Risk Factor for the Development of Coronary Artery Disease? A Systematic Review and Meta-analysis.

    Science.gov (United States)

    Huang, Feng

    2018-04-04

    We aimed to systematically investigate the association between testosterone level and cardiovascular risk in male patients with type 2 diabetes mellitus (T2DM) by comparing male T2DM patients with low testosterone levels to male T2DM patients with normal testosterone levels at baseline in terms of the number of cases of coronary artery disease (CAD). Online databases were carefully searched for studies relating to testosterone, diabetes mellitus, and cardiovascular risk by using the search terms 'testosterone,' 'diabetes mellitus,' and 'coronary artery/cardiovascular disease.' The only endpoint in this analysis was CAD/atherosclerosis/coronary plaque/major adverse coronary event prior to or following testosterone reduction at baseline. The analytical parameters used in this analysis were the risk ratio (RR) with the 95% confidence interval (CI), as obtained using the RevMan 5.3 software. 3467 male patients with T2DM (1079 patients with a low testosterone level versus 2388 patients with a normal testosterone level) were included. The results of this analysis showed that when a random effects model was used, a higher risk of CAD/cardiovascular disease was observed in diabetic patients with a low testosterone level than in those with a normal testosterone level (RR 1.24, 95% CI 0.94-1.63; P = 0.13). However, the difference in risk was not statistically significant. Similarly, with a fixed effects model, a low testosterone level was associated with a higher CAD/cardiovascular risk of disease (RR 1.12, 95% CI 0.98-1.34; P = 0.08); in this case, the difference in risk between the T2DM patients with low and normal testosterone levels approached statistical significance. A previously or currently reduced testosterone level was not found to be statistically significantly associated with a high risk of CAD/cardiovascular disease in male patients with T2DM. However, the difference in risk between the T2DM patients with low and normal testosterone levels was observed

  2. Theoretical Physics Division

    International Nuclear Information System (INIS)

    This report is a survey of the studies done in the Theoretical Physics Division of the Nuclear Physics Institute; the subjects studied in theoretical nuclear physics were the few-nucleon problem, nuclear structure, nuclear reactions, weak interactions, intermediate energy and high energy physics. In this last field, the subjects studied were field theory, group theory, symmetry and strong interactions [fr

  3. Classification of theoretical and methodological foundations of training future coaches

    Directory of Open Access Journals (Sweden)

    Chopyk T.V.

    2013-06-01

    Full Text Available The problem of training future trainers and teachers in higher education institutions is considered. Theoretically analyzed the problem of training future coaches. Systematized content of theoretical and methodological foundations of training future coaches. It was revealed that the system of knowledge creation is based on logically related topics of general characteristics of the professional activity of the future coaches and features of the content of the production functions. Also on the justification of typical tasks of future coaches, definition and development of professional competencies of future coaches during training. In addition, also the prospects for the development of sport as a future profession. The proposed classification is different from previous work defining the future of professional competence of trainers and teachers in the process of training, clarifying sections of future performance professional coaches and prospects of the development of sports.

  4. A Theoretical Analysis of the Geography of Schistosomiasis in Burkina Faso Highlights the Roles of Human Mobility and Water Resources Development in Disease Transmission.

    Science.gov (United States)

    Perez-Saez, Javier; Mari, Lorenzo; Bertuzzo, Enrico; Casagrandi, Renato; Sokolow, Susanne H; De Leo, Giulio A; Mande, Theophile; Ceperley, Natalie; Froehlich, Jean-Marc; Sou, Mariam; Karambiri, Harouna; Yacouba, Hamma; Maiga, Amadou; Gatto, Marino; Rinaldo, Andrea

    2015-01-01

    We study the geography of schistosomiasis across Burkina Faso by means of a spatially explicit model of water-based disease dynamics. The model quantitatively addresses the geographic stratification of disease burden in a novel framework by explicitly accounting for drivers and controls of the disease, including spatial information on the distributions of population and infrastructure, jointly with a general description of human mobility and climatic/ecological drivers. Spatial patterns of disease are analysed by the extraction and the mapping of suitable eigenvectors of the Jacobian matrix subsuming the stability of the disease-free equilibrium. The relevance of the work lies in the novel mapping of disease burden, a byproduct of the parametrization induced by regional upscaling, by model-guided field validations and in the predictive scenarios allowed by exploiting the range of possible parameters and processes. Human mobility is found to be a primary control at regional scales both for pathogen invasion success and the overall distribution of disease burden. The effects of water resources development highlighted by systematic reviews are accounted for by the average distances of human settlements from water bodies that are habitats for the parasite's intermediate host. Our results confirm the empirical findings about the role of water resources development on disease spread into regions previously nearly disease-free also by inspection of empirical prevalence patterns. We conclude that while the model still needs refinements based on field and epidemiological evidence, the proposed framework provides a powerful tool for large-scale public health planning and schistosomiasis management.

  5. A Theoretical Analysis of the Geography of Schistosomiasis in Burkina Faso Highlights the Roles of Human Mobility and Water Resources Development in Disease Transmission.

    Directory of Open Access Journals (Sweden)

    Javier Perez-Saez

    Full Text Available We study the geography of schistosomiasis across Burkina Faso by means of a spatially explicit model of water-based disease dynamics. The model quantitatively addresses the geographic stratification of disease burden in a novel framework by explicitly accounting for drivers and controls of the disease, including spatial information on the distributions of population and infrastructure, jointly with a general description of human mobility and climatic/ecological drivers. Spatial patterns of disease are analysed by the extraction and the mapping of suitable eigenvectors of the Jacobian matrix subsuming the stability of the disease-free equilibrium. The relevance of the work lies in the novel mapping of disease burden, a byproduct of the parametrization induced by regional upscaling, by model-guided field validations and in the predictive scenarios allowed by exploiting the range of possible parameters and processes. Human mobility is found to be a primary control at regional scales both for pathogen invasion success and the overall distribution of disease burden. The effects of water resources development highlighted by systematic reviews are accounted for by the average distances of human settlements from water bodies that are habitats for the parasite's intermediate host. Our results confirm the empirical findings about the role of water resources development on disease spread into regions previously nearly disease-free also by inspection of empirical prevalence patterns. We conclude that while the model still needs refinements based on field and epidemiological evidence, the proposed framework provides a powerful tool for large-scale public health planning and schistosomiasis management.

  6. Theoretical physics 6 quantum mechanics : basics

    CERN Document Server

    Nolting, Wolfgang

    2017-01-01

    This textbook offers a clear and comprehensive introduction to the basics of quantum mechanics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series, thus developing the physical understanding further on to quantized states. The first part of the book introduces wave equations while exploring the Schrödinger equation and the hydrogen atom. More complex themes are covered in the second part of the book, which describes the Dirac formulism of quantum mechanics. Ideally suited to undergraduate students with some grounding in classical mechanics and electrodynamics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this...

  7. Preoperative screening: value of previous tests.

    Science.gov (United States)

    Macpherson, D S; Snow, R; Lofgren, R P

    1990-12-15

    To determine the frequency of tests done in the year before elective surgery that might substitute for preoperative screening tests and to determine the frequency of test results that change from a normal value to a value likely to alter perioperative management. Retrospective cohort analysis of computerized laboratory data (complete blood count, sodium, potassium, and creatinine levels, prothrombin time, and partial thromboplastin time). Urban tertiary care Veterans Affairs Hospital. Consecutive sample of 1109 patients who had elective surgery in 1988. At admission, 7549 preoperative tests were done, 47% of which duplicated tests performed in the previous year. Of 3096 previous results that were normal as defined by hospital reference range and done closest to the time of but before admission (median interval, 2 months), 13 (0.4%; 95% CI, 0.2% to 0.7%), repeat values were outside a range considered acceptable for surgery. Most of the abnormalities were predictable from the patient's history, and most were not noted in the medical record. Of 461 previous tests that were abnormal, 78 (17%; CI, 13% to 20%) repeat values at admission were outside a range considered acceptable for surgery (P less than 0.001, frequency of clinically important abnormalities of patients with normal previous results with those with abnormal previous results). Physicians evaluating patients preoperatively could safely substitute the previous test results analyzed in this study for preoperative screening tests if the previous tests are normal and no obvious indication for retesting is present.

  8. Developing a targeted, theory-informed implementation intervention using two theoretical frameworks to address health professional and organisational factors: a case study to improve the management of mild traumatic brain injury in the emergency department.

    Science.gov (United States)

    Tavender, Emma J; Bosch, Marije; Gruen, Russell L; Green, Sally E; Michie, Susan; Brennan, Sue E; Francis, Jill J; Ponsford, Jennie L; Knott, Jonathan C; Meares, Sue; Smyth, Tracy; O'Connor, Denise A

    2015-05-25

    Despite the availability of evidence-based guidelines for the management of mild traumatic brain injury in the emergency department (ED), variations in practice exist. Interventions designed to implement recommended behaviours can reduce this variation. Using theory to inform intervention development is advocated; however, there is no consensus on how to select or apply theory. Integrative theoretical frameworks, based on syntheses of theories and theoretical constructs relevant to implementation, have the potential to assist in the intervention development process. This paper describes the process of applying two theoretical frameworks to investigate the factors influencing recommended behaviours and the choice of behaviour change techniques and modes of delivery for an implementation intervention. A stepped approach was followed: (i) identification of locally applicable and actionable evidence-based recommendations as targets for change, (ii) selection and use of two theoretical frameworks for identifying barriers to and enablers of change (Theoretical Domains Framework and Model of Diffusion of Innovations in Service Organisations) and (iii) identification and operationalisation of intervention components (behaviour change techniques and modes of delivery) to address the barriers and enhance the enablers, informed by theory, evidence and feasibility/acceptability considerations. We illustrate this process in relation to one recommendation, prospective assessment of post-traumatic amnesia (PTA) by ED staff using a validated tool. Four recommendations for managing mild traumatic brain injury were targeted with the intervention. The intervention targeting the PTA recommendation consisted of 14 behaviour change techniques and addressed 6 theoretical domains and 5 organisational domains. The mode of delivery was informed by six Cochrane reviews. It was delivered via five intervention components : (i) local stakeholder meetings, (ii) identification of local opinion

  9. Automatic electromagnetic valve for previous vacuum

    International Nuclear Information System (INIS)

    Granados, C. E.; Martin, F.

    1959-01-01

    A valve which permits the maintenance of an installation vacuum when electric current fails is described. It also lets the air in the previous vacuum bomb to prevent the oil ascending in the vacuum tubes. (Author)

  10. Theoretical nuclear physics

    CERN Document Server

    Blatt, John M

    1979-01-01

    A classic work by two leading physicists and scientific educators endures as an uncommonly clear and cogent investigation and correlation of key aspects of theoretical nuclear physics. It is probably the most widely adopted book on the subject. The authors approach the subject as ""the theoretical concepts, methods, and considerations which have been devised in order to interpret the experimental material and to advance our ability to predict and control nuclear phenomena.""The present volume does not pretend to cover all aspects of theoretical nuclear physics. Its coverage is restricted to

  11. Construtivismo: desdobramentos teóricos e no campo da educação. Constructivism: theoretical developments and in the education area

    Directory of Open Access Journals (Sweden)

    Sanchis, Isabelle de Paiva

    2010-05-01

    Full Text Available O construtivismo, que tem como principal referência Jean Piaget, designa hoje um conjunto teórico e de práticas que abrange a obra de muitos autores e desdobramentos práticos diversificados. No campo educacional, a teoria construtivista foi muitas vezes transformada em métodos pedagógicos, a partir da escolha de partes ou conceitos da teoria a serem tomados para aplicação em determinados aspectos da aprendizagem escolar. O objetivo deste trabalho é o de resgatar alguns dos importantes desdobramentos da teoria piagetiana, tanto no campo teórico como no desenvolvimento de práticas pedagógicas, e apontar os riscos de reducionismo presentes em alguns deles, principalmente no que diz respeito à noção de sujeito. O artigo é composto por uma breve passagem pelos principais conceitos da teoria piagetiana referentes à constituição do sujeito através da interação, que é o que permite também, e ao mesmo tempo, a construção do conhecimento. Em um segundo momento são apresentados alguns pesquisadores que seguiram as ideias mais fundamentais de Piaget, embora com focos distintos; além de diferentes enfoques e interpretações do próprio construtivismo piagetiano. Por fim, são explicitadas algumas possibilidades de relação entre a teoria construtivista e a prática pedagógica, levando-se em conta as consequências, para o sujeito, da redução da teoria a apenas uma técnica metodológica.The constructivism, that has as main reference Jean Piaget, covers nowadays a diverse array of theories and practices that it encloses the workmanship of many authors and practical implications. In the educational field, the constructivist theory was many times transformed into pedagogical methods, based on the choice of parts or concepts of the theory to be taken for application in some aspects of the school learning. The objective of this work is to rescue some of the important implications of the theory of Piaget, as much in the theoretical

  12. Development of a test battery (NPM-X) for neuropsychological and neuromotor examination of children with developmental disabilities or mental retardation. A theoretical and clinical study.

    Science.gov (United States)

    Gjaerum, B

    1997-01-01

    Biological and behavioural diagnosis often do not provide information on functional competence. This is, however, of utmost importance in planning services as well as in research on treatment effects for children with developmental disorders. For school-aged children neuropsychological assessment has proved its value in this respect. For children of chronological age (CA) below 5-7 with specific developmental disabilities, and for children with severe mental retardation there has been a lack of applicable test batteries. This thesis presents a new test battery for neuropsychological and neuromotor examination, NPM-X, for these two groups of children. The first part of the thesis reviews available medical and psychological tests and assessment procedures with respect to applicability and relevance for neuropsychological assessment to children with mental retardation and mental age (MA) below 7. The second part describes the theoretical background and the content of the new test battery. The methodology for testing these children, who due to their age and/or their developmental disabilities often co-operate poorly, is described. Scoring categories, specifically developed to enable a detailed and differentiated description of the child, are presented. Because of the instability of the behavioural function in early age as well as in cases of severe disability, the scoring system records both the child's optimal functional capacity and inconsistencies in behaviour. For the purpose of planning treatment and training according to the child's resources as well as dysfunctions, two different functional profiles are provided. In the normative functional profile the child's functional level is compared to normal expectations for the child's CA, and in the ideographic functional profile the child's function in each area is compared to the child's average functional level. In the third part of the thesis the reliability results are presented and discussed. A pair of trained M

  13. Theoretical physics division

    International Nuclear Information System (INIS)

    Anon.

    1980-01-01

    Research activities of the theoretical physics division for 1979 are described. Short summaries are given of specific research work in the following fields: nuclear structure, nuclear reactions, intermediate energy physics, elementary particles [fr

  14. Theoretical Computer Science

    DEFF Research Database (Denmark)

    2002-01-01

    The proceedings contains 8 papers from the Conference on Theoretical Computer Science. Topics discussed include: query by committee, linear separation and random walks; hardness results for neural network approximation problems; a geometric approach to leveraging weak learners; mind change...

  15. Theoretical physics division

    International Nuclear Information System (INIS)

    Anon.

    The studies in 1977 are reviewed. In theoretical nuclear physics: nuclear structure, nuclear reactions, intermediate energy physics; in elementary particle physics: field theory, strong interactions dynamics, nucleon-nucleon interactions, new particles, current algebra, symmetries and quarks are studied [fr

  16. Relating drilling parameters at the bit-rock interface: theoretical and field studies

    Energy Technology Data Exchange (ETDEWEB)

    Sinkala, T. (Luleaa University of Technology, Luleaa (Sweden). Division of Mining Equipment Engineering)

    1991-01-01

    An explicit expression relating drilling parameters at the bit-rock contact is derived. The expression estimates the minimum torque, related to bit-rock contact only, required to maintain constant bit rotation. Theoretical results from the developed bit-rock contact relation agree very satisfactorily with those obtained from field tests and other previous experience. 15 refs., 8 figs., 2 tabs.

  17. Nuclear energy and sustainable development. Theoretical reflection and critical-interpretative research towards a better support for decision making sustainable development, governance, technology assessment. Doctoral Thesis Prepared at SCK-CEN and Defended in 2006

    International Nuclear Information System (INIS)

    Laes, E.

    2007-01-01

    It is a well-known problem for decision makers to clearly indicate what is meant by 'sustainable development'. Scientific research approaches in the field seem to be divided between the 'objective' approach of the subject (argued to be based on 'hard' scientific facts, e.g. risk assessment, environmental impact assessment, various indicator systems, etc.) and more 'subjective' or 'participatory' approaches (argued to incorporate 'ethical values', 'worldviews', 'cultural perspectives', etc.). Another (related) division seems to be between approaches which acknowledge and conceptualise their role in the political sphere, and others which deny, pass over or minimise such a role. In this PhD research, we aim to go beyond this unproductive distinction between 'objective' and 'subjective' approaches. Our approach is based on the insight (and demonstration) that actually both approaches represent a particular interpretation of more general justification schemes (and are both inherently political). In order to substantiate this point of view, four research tracks were followed: 1) a (meta-) theoretical investigation of sustainability conceptions, 2) an analysis of the operationalisation of sustainability in various governance strategies, 3) two case-studies, and 4) the development of a practical proposal for sustainable energy governance

  18. Concomitant and previous osteoporotic vertebral fractures.

    Science.gov (United States)

    Lenski, Markus; Büser, Natalie; Scherer, Michael

    2017-04-01

    Background and purpose - Patients with osteoporosis who present with an acute onset of back pain often have multiple fractures on plain radiographs. Differentiation of an acute osteoporotic vertebral fracture (AOVF) from previous fractures is difficult. The aim of this study was to investigate the incidence of concomitant AOVFs and previous OVFs in patients with symptomatic AOVFs, and to identify risk factors for concomitant AOVFs. Patients and methods - This was a prospective epidemiological study based on the Registry of Pathological Osteoporotic Vertebral Fractures (REPAPORA) with 1,005 patients and 2,874 osteoporotic vertebral fractures, which has been running since February 1, 2006. Concomitant fractures are defined as at least 2 acute short-tau inversion recovery (STIR-) positive vertebral fractures that happen concomitantly. A previous fracture is a STIR-negative fracture at the time of initial diagnostics. Logistic regression was used to examine the influence of various variables on the incidence of concomitant fractures. Results - More than 99% of osteoporotic vertebral fractures occurred in the thoracic and lumbar spine. The incidence of concomitant fractures at the time of first patient contact was 26% and that of previous fractures was 60%. The odds ratio (OR) for concomitant fractures decreased with a higher number of previous fractures (OR =0.86; p = 0.03) and higher dual-energy X-ray absorptiometry T-score (OR =0.72; p = 0.003). Interpretation - Concomitant and previous osteoporotic vertebral fractures are common. Risk factors for concomitant fractures are a low T-score and a low number of previous vertebral fractures in cases of osteoporotic vertebral fracture. An MRI scan of the the complete thoracic and lumbar spine with STIR sequence reduces the risk of under-diagnosis and under-treatment.

  19. Theoretical physics and astrophysics

    CERN Document Server

    Ginzburg, Vitalii Lazarevich

    1979-01-01

    The aim of this book is to present, on the one hand various topics in theoretical physics in depth - especially topics related to electrodynamics - and on the other hand to show how these topics find applications in various aspects of astrophysics. The first text on theoretical physics and astrophysical applications, it covers many recent advances including those in X-ray, &ggr;-ray and radio-astronomy, with comprehensive coverage of the literature

  20. Uterine rupture without previous caesarean delivery

    DEFF Research Database (Denmark)

    Thisted, Dorthe L. A.; H. Mortensen, Laust; Krebs, Lone

    2015-01-01

    OBJECTIVE: To determine incidence and patient characteristics of women with uterine rupture during singleton births at term without a previous caesarean delivery. STUDY DESIGN: Population based cohort study. Women with term singleton birth, no record of previous caesarean delivery and planned...... vaginal delivery (n=611,803) were identified in the Danish Medical Birth Registry (1997-2008). Medical records from women recorded with uterine rupture during labour were reviewed to ascertain events of complete uterine rupture. Relative Risk (RR) and adjusted Relative Risk Ratio (aRR) of complete uterine...... rupture with 95% confidence intervals (95% CI) were ascertained according to characteristics of the women and of the delivery. RESULTS: We identified 20 cases with complete uterine rupture. The incidence of complete uterine rupture among women without previous caesarean delivery was about 3...

  1. What is neuroethics? Empirical and theoretical neuroethics.

    Science.gov (United States)

    Northoff, Georg

    2009-11-01

    Neuroethics is a recently emerging field that deals with predominantly empirical and practical issues of ethics in neuroscience. In contrast, theoretical and methodological considerations have rather been neglected and thus what may be called theoretical neuroethics. The review focuses on informed consent and moral judgment as examples of empirical neuroethics and norm-fact circularity and method-based neuroethics as issues of a theoretical neuroethics. It is argued that we need to consider theoretical and methodological issues in order to develop neuroethics as a distinct discipline, which as such can be distinguished from both philosophy/ethics and neuroscience.

  2. INTRODUCTION Previous reports have documented a high ...

    African Journals Online (AJOL)

    pregnancy if they were married, educated, had dental insurance, previously used dental services when not pregnant, or had knowledge about the possible connection between oral health and pregnancy outcome8. The purpose of this study was to explore the factors determining good oral hygiene among pregnant women ...

  3. Empowerment perceptions of educational managers from previously ...

    African Journals Online (AJOL)

    The perceptions of educational manag ers from previously disadvantaged primary and high schools in the Nelson Mandela Metropole regarding the issue of empowerment are outlined and the perceptions of educational managers in terms of various aspects of empowerment at different levels reflected. A literature study ...

  4. Management of choledocholithiasis after previous gastrectomy.

    Science.gov (United States)

    Anwer, S; Egan, R; Cross, N; Guru Naidu, S; Somasekar, K

    2017-09-01

    Common bile duct stones in patients with a previous gastrectomy can be a technical challenge because of the altered anatomy. This paper presents the successful management of two such patients using non-traditional techniques as conventional endoscopic retrograde cholangiopancreatography was not possible.

  5. Laboratory Grouping Based on Previous Courses.

    Science.gov (United States)

    Doemling, Donald B.; Bowman, Douglas C.

    1981-01-01

    In a five-year study, second-year human physiology students were grouped for laboratory according to previous physiology and laboratory experience. No significant differences in course or board examination performance were found, though correlations were found between predental grade-point averages and grouping. (MSE)

  6. Differences between previously married and never married 'gay' men: family background, childhood experiences and current attitudes.

    Science.gov (United States)

    Higgins, Daryl J

    2004-01-01

    Despite a large body of literature on the development of sexual orientation, little is known about why some gay men have been (or remain) married to a woman. In the current study, a self-selected sample of 43 never married gay men ('never married') and 26 gay men who were married to a woman ('previously married') completed a self-report questionnaire. Hypotheses were based on five possible explanations for gay men's marriages: (a) differences in sexual orientation (i.e., bisexuality); (b) internalized homophobia; (c) religious intolerance; (d) confusion created because of childhood/adolescent sexual experiences; and/or (e) poor psychological adjustment. Previously married described their families' religious beliefs as more fundamentalist than never married. No differences were found between married' and never married' ratings of their sexual orientation and identity, and levels of homophobia and self-depreciation. Family adaptability and family cohesion and the degree to which respondents reported having experienced child maltreatment did not distinguish between previously married and never married. The results highlight how little is understood of the reasons why gay men marry, and the need to develop an adequate theoretical model.

  7. Previously unknown organomagnesium compounds in astrochemical context

    OpenAIRE

    Ruf, Alexander

    2018-01-01

    We describe the detection of dihydroxymagnesium carboxylates (CHOMg) in astrochemical context. CHOMg was detected in meteorites via ultrahigh-resolving chemical analytics and represents a novel, previously unreported chemical class. Thus, chemical stability was probed via quantum chemical computations, in combination with experimental fragmentation techniques. Results propose the putative formation of green-chemical OH-Grignard-type molecules and triggered fundamental questions within chemica...

  8. IMPORTANCE OF THEORETICAL AND SCIENTIFIC PREPARATION IN COMBAT SPORTS TRAINING

    OpenAIRE

    Paul Iacobini

    2013-01-01

    Theoretical training is an important factor in terms of sports development of scientific research, specific to combat sports for achieving specific performance objectives set. Theoretical knowledge is theoretical science which the trainer teaches the lesson of training for understanding and integrating sporting content in sporting life. Thought the theoretical preparation, the athlete acknowledges the educational value of sports training. Theoretical preparation includes a rich content issues...

  9. Theoretical Advanced Study Institute: 2014

    Energy Technology Data Exchange (ETDEWEB)

    DeGrand, Thomas [Univ. of Colorado, Boulder, CO (United States)

    2016-08-17

    The Theoretical Advanced Study Institute (TASI) was held at the University of Colorado, Boulder, during June 2-27, 2014. The topic was "Journeys through the Precision Frontier: Amplitudes for Colliders." The organizers were Professors Lance Dixon (SLAC) and Frank Petriello (Northwestern and Argonne). There were fifty-one students. Nineteen lecturers gave sixty seventy-five minute lectures. A Proceedings was published. This TASI was unique for its large emphasis on methods for calculating amplitudes. This was embedded in a program describing recent theoretical and phenomenological developments in particle physics. Topics included introductions to the Standard Model, to QCD (both in a collider context and on the lattice), effective field theories, Higgs physics, neutrino interactions, an introduction to experimental techniques, and cosmology.

  10. Theoretical Chemistry Symposium 2006

    Indian Academy of Sciences (India)

    WINTEC

    This special issue of the Journal of Chemical Sciences contains 29 original papers presented at the Theoretical Chemistry Symposium (TCS 2006) held at Bharathi- dasan University during December 11–13, 2006. Earlier meetings on this theme were organized in various parts of the country viz. Chandigarh (1986), IIT ...

  11. Theoretical Computer Science

    DEFF Research Database (Denmark)

    2002-01-01

    The proceedings contains 8 papers from the Conference on Theoretical Computer Science. Topics discussed include: query by committee, linear separation and random walks; hardness results for neural network approximation problems; a geometric approach to leveraging weak learners; mind change...... complexity of learning logic programs and avoiding coding tricks by hyperrobust learning....

  12. Riemann and Theoretical Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 11; Issue 11. Riemann and Theoretical Physics. Joseph Samuel. General Article Volume 11 Issue 11 November 2006 pp 56-60. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/011/11/0056-0060. Keywords.

  13. A Game-Theoretic History of the Cuban Missile Crisis

    Directory of Open Access Journals (Sweden)

    Frank C. Zagare

    2014-01-01

    Full Text Available This study surveys and evaluates previous attempts to use game theory to explain the strategic dynamic of the Cuban missile crisis, including, but not limited to, explanations developed in the style of Thomas Schelling, Nigel Howard and Steven Brams. All of the explanations were judged to be either incomplete or deficient in some way. Schelling’s explanation is both empirically and theoretically inconsistent with the consensus interpretation of the crisis; Howard’s with the contemporary understanding of rational strategic behavior; and Brams’ with the full sweep of the events that define the crisis. The broad outlines of a more general explanation that addresses all of the foundational questions associated with the crisis within the confines of a single, integrated, game-theoretic model with incomplete information are laid out.

  14. Theoretical bases of formation of political consciousness of the citizens of Ukraine - as the actual direction of the development of the mainstreaming political sociology

    Directory of Open Access Journals (Sweden)

    K. U. Kublik

    2013-12-01

    Full Text Available Analyzing the political life through political ideology and political culture should pay attention to political consciousness, which presents set of theoretical positions, views, opinions, attitudes, values orientation, etc. that are implemented in the process of implementing functions of political power. Because postulates political ideology are implemented using some mechanism, election campaigns and public opinion, their analysis is undoubtedly one of the major directions of political sociology. At the present stage of creation of the state of Ukraine, formation of the Institute of civil society is important to the study of the mechanism of formation of political consciousness of the nation. On the state of political consciousness influenced by processes not only within the country but also in the international arena. The growing interdependence of countries and peoples, General threat to the existence of humans and the General difficulties on the path of human progress lead to the «globalization» of all the forms of public consciousness, including political. A shift from confrontation to mutual understanding and cooperation means considerable changes in the political consciousness and politics subjects of international cooperation. These are not only the state but also directly peoples, peace­loving democratic mass movements, people of good will on all continents. Consolidation of their efforts is able to resist all forms of hegemony and dictates, any policy which is conducted from a position of strength.

  15. Individual differences in the shape bias in preschool children with specific language impairment and typical language development: theoretical and clinical implications.

    Science.gov (United States)

    Collisson, Beverly Anne; Grela, Bernard; Spaulding, Tammie; Rueckl, Jay G; Magnuson, James S

    2015-05-01

    We investigated whether preschool children with specific language impairment (SLI) exhibit the shape bias in word learning: the bias to generalize based on shape rather than size, color, or texture in an object naming context ('This is a wek; find another wek') but not in a non-naming similarity classification context ('See this? Which one goes with this one?'). Fifty-four preschool children (16 with SLI, 16 children with typical language [TL] in an equated control group, and 22 additional children with TL included in individual differences analyses but not group comparisons) completed a battery of linguistic and cognitive assessments and two experiments. In Experiment 1, children made generalization choices in object naming and similarity classification contexts on separate days, from options similar to a target object in shape, color, or texture. On average, TL children exhibited the shape bias in an object naming context, but children with SLI did not. In Experiment 2, we tested whether the failure to exhibit the shape bias might be linked to ability to detect systematicities in the visual domain. Experiment 2 supported this hypothesis, in that children with SLI failed to learn simple paired visual associations that were readily learned by children with TL. Analyses of individual differences in the two studies revealed that visual paired-associate learning predicted degree of shape bias in children with SLI and TL better than any other measure of nonverbal intelligence or standard assessments of language ability. We discuss theoretical and clinical implications. © 2014 John Wiley & Sons Ltd.

  16. Theoretical analysis on the probability of initiating persistent fission chain

    International Nuclear Information System (INIS)

    Liu Jianjun; Wang Zhe; Zhang Ben'ai

    2005-01-01

    For the finite multiplying system of fissile material in the presence of a weak neutron source, the authors analyses problems on the probability of initiating a persistent fission chain through reckoning the stochastic theory of neutron multiplication. In the theoretical treatment, the conventional point reactor conception model is developed to an improved form with position x and velocity v dependence. The estimated results including approximate value of the probability mentioned above and its distribution are given by means of diffusion approximation and compared with those with previous point reactor conception model. They are basically consistent, however the present model can provide details on the distribution. (authors)

  17. Books average previous decade of economic misery.

    Science.gov (United States)

    Bentley, R Alexander; Acerbi, Alberto; Ormerod, Paul; Lampos, Vasileios

    2014-01-01

    For the 20(th) century since the Depression, we find a strong correlation between a 'literary misery index' derived from English language books and a moving average of the previous decade of the annual U.S. economic misery index, which is the sum of inflation and unemployment rates. We find a peak in the goodness of fit at 11 years for the moving average. The fit between the two misery indices holds when using different techniques to measure the literary misery index, and this fit is significantly better than other possible correlations with different emotion indices. To check the robustness of the results, we also analysed books written in German language and obtained very similar correlations with the German economic misery index. The results suggest that millions of books published every year average the authors' shared economic experiences over the past decade.

  18. Theoretical physics 1 classical mechanics

    CERN Document Server

    Nolting, Wolfgang

    2016-01-01

    This textbook offers a clear and comprehensive introduction to classical mechanics, one of the core components of undergraduate physics courses. The book starts with a thorough introduction to the mathematical tools needed, to make this textbook self-contained for learning. The second part of the book introduces the mechanics of the free mass point and details conservation principles. The third part expands the previous to mechanics of many particle systems. Finally the mechanics of the rigid body is illustrated with rotational forces, inertia and gyroscope movement. Ideally suited to undergraduate students in their first year, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this series...

  19. Theoretical physics 8 statistical physics

    CERN Document Server

    Nolting, Wolfgang

    2018-01-01

    This textbook offers a clear and comprehensive introduction to statistical physics, one of the core components of advanced undergraduate physics courses. It follows on naturally from the previous volumes in this series, using methods of probability theory and statistics to solve physical problems. The first part of the book gives a detailed overview on classical statistical physics and introduces all mathematical tools needed. The second part of the book covers topics related to quantized states, gives a thorough introduction to quantum statistics, followed by a concise treatment of quantum gases. Ideally suited to undergraduate students with some grounding in quantum mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets. About the Theoretical Physics series Translated from the renowned and highly successf...

  20. Different Types of Action Research to Promote Chemistry Teachers' Professional Development--A Joined Theoretical Reflection on Two Cases from Israel and Germany

    Science.gov (United States)

    Mamlok-Naaman, Rachel; Eilks, Ingo

    2012-01-01

    Action research is defined as using research activities to develop concrete societal practices. Action research understands the change of practice as being already a central aim of the research process itself, and it also seeks to contribute to the professional development of all participants in the particular field of study. Even though (or maybe…

  1. Theoretical atomic physics

    CERN Document Server

    Friedrich, Harald

    2017-01-01

    This expanded and updated well-established textbook contains an advanced presentation of quantum mechanics adapted to the requirements of modern atomic physics. It includes topics of current interest such as semiclassical theory, chaos, atom optics and Bose-Einstein condensation in atomic gases. In order to facilitate the consolidation of the material covered, various problems are included, together with complete solutions. The emphasis on theory enables the reader to appreciate the fundamental assumptions underlying standard theoretical constructs and to embark on independent research projects. The fourth edition of Theoretical Atomic Physics contains an updated treatment of the sections involving scattering theory and near-threshold phenomena manifest in the behaviour of cold atoms (and molecules). Special attention is given to the quantization of weakly bound states just below the continuum threshold and to low-energy scattering and quantum reflection just above. Particular emphasis is laid on the fundamen...

  2. Concluding theoretical remarks

    International Nuclear Information System (INIS)

    Ellis, J.

    1986-01-01

    My task in this talk is to review the happenings of this workshop from a theoretical perspective, and to emphasize lines for possible future research. My remarks are organized into a theoretical overview of the what, why, (mainly the hierarchy problem) how, (supersymmetry must be broken: softly or spontaneously, and if the latter, by means of a new U tilde(1) gauge group or through the chiral superfields) when (how heavy are supersymmetric partner particles in different types of theories) and where (can one find evidence for) supersymmetry. In the last part are discussed various ongoing and future searches for photinos γ tilde, gravitinos G tilde, the U vector boson, shiggses H tilde, squarks q tilde and sleptons l tilde, gluinos g tilde, winos W tilde and other gauginos, as well as hunts for indirect effects of supersymmetry, such as for example in baryon decay. Finally there is a little message of encouragement to our experimental colleagues, based on historical precedent. (orig.)

  3. Compendium of theoretical physics

    CERN Document Server

    Wachter, Armin

    2006-01-01

    Mechanics, Electrodynamics, Quantum Mechanics, and Statistical Mechanics and Thermodynamics comprise the canonical undergraduate curriculum of theoretical physics. In Compendium of Theoretical Physics, Armin Wachter and Henning Hoeber offer a concise, rigorous and structured overview that will be invaluable for students preparing for their qualifying examinations, readers needing a supplement to standard textbooks, and research or industrial physicists seeking a bridge between extensive textbooks and formula books. The authors take an axiomatic-deductive approach to each topic, starting the discussion of each theory with its fundamental equations. By subsequently deriving the various physical relationships and laws in logical rather than chronological order, and by using a consistent presentation and notation throughout, they emphasize the connections between the individual theories. The reader’s understanding is then reinforced with exercises, solutions and topic summaries. Unique Features: Every topic is ...

  4. MARKETING MIX THEORETICAL ASPECTS

    OpenAIRE

    Margarita Išoraitė

    2016-01-01

    Aim of article is to analyze marketing mix theoretical aspects. The article discusses that marketing mix is one of the main objectives of the marketing mix elements for setting objectives and marketing budget measures. The importance of each element depends not only on the company and its activities, but also on the competition and time. All marketing elements are interrelated and should be seen in the whole of their actions. Some items may have greater importance than others; it depends main...

  5. Silicene: Recent theoretical advances

    KAUST Repository

    Lew Yan Voon, L. C.

    2016-04-14

    Silicene is a two-dimensional allotrope of silicon with a puckered hexagonal structure closely related to the structure of graphene and that has been predicted to be stable. To date, it has been successfully grown in solution (functionalized) and on substrates. The goal of this review is to provide a summary of recent theoretical advances in the properties of both free-standing silicene as well as in interaction with molecules and substrates, and of proposed device applications.

  6. 3. Theoretical Physics Division

    International Nuclear Information System (INIS)

    For the period September 1980 - Aug 1981, the studies in theoretical physics divisions have been compiled under the following headings: in nuclear physics, nuclear structure, nuclear reactions and intermediate energies; in particle physics, NN and NantiN interactions, dual topological unitarization, quark model and quantum chromodynamics, classical and quantum field theories, non linear integrable equations and topological preons and Grand unified theories. A list of publications, lectures and meetings is included [fr

  7. Theoretical high energy physics

    International Nuclear Information System (INIS)

    Lee, T.D.

    1990-05-01

    This report discusses progress on theoretical high energy physics at Columbia University in New York City. Some of the topics covered are: Chern-Simons gauge field theories; dynamical fermion QCD calculations; lattice gauge theory; the standard model of weak and electromagnetic interactions; Boson-fermion model of cuprate superconductors; S-channel theory of superconductivity and axial anomaly and its relation to spin in the parton model

  8. Definición de un marco teórico para comprender el concepto del desarrollo sustentable./Definition of a theoretical framework for understanding the concept of sustainable development.

    Directory of Open Access Journals (Sweden)

    Cárdenas Jirón; Luz Alicia

    1999-12-01

    Full Text Available Dado el actual requerimiento por comprender un concepto tan recurrente en el campo profesional, académico y político como es el Desarrollo Sustentable, es que ocurre la elaboración de este articulo. Por tanto lo que se pretende lograr es aclarar el significado conceptual del Desarrollo Sustentable, situarlo en un contexto, entender el proceso gestacional e ilustrar con algún ejemplo clásico Latinoamericano./It contributes to the understanding of the concept of sustainable development. First, referring to a global political context existing economic in the second half of this century. Then develops a theoretical framework for the meaning and the different approaches related to sustainable development. From this, it raises agendas to realize and move towards this type of development, which emphasize the local level as a solid starting point. Shows the case of the city of Curitiba, with proper planning and sustainable management recognized.

  9. Information theoretic description of networks

    Science.gov (United States)

    Wilhelm, Thomas; Hollunder, Jens

    2007-11-01

    We present a new information theoretic approach for network characterizations. It is developed to describe the general type of networks with n nodes and L directed and weighted links, i.e., it also works for the simpler undirected and unweighted networks. The new information theoretic measures for network characterizations are based on a transmitter-receiver analogy of effluxes and influxes. Based on these measures, we classify networks as either complex or non-complex and as either democracy or dictatorship networks. Directed networks, in particular, are furthermore classified as either information spreading and information collecting networks. The complexity classification is based on the information theoretic network complexity measure medium articulation (MA). It is proven that special networks with a medium number of links ( L∼n1.5) show the theoretical maximum complexity MA=(log n)2/2. A network is complex if its MA is larger than the average MA of appropriately randomized networks: MA>MAr. A network is of the democracy type if its redundancy Rdictatorship network. In democracy networks all nodes are, on average, of similar importance, whereas in dictatorship networks some nodes play distinguished roles in network functioning. In other words, democracy networks are characterized by cycling of information (or mass, or energy), while in dictatorship networks there is a straight through-flow from sources to sinks. The classification of directed networks into information spreading and information collecting networks is based on the conditional entropies of the considered networks ( H(A/B)=uncertainty of sender node if receiver node is known, H(B/A)=uncertainty of receiver node if sender node is known): if H(A/B)>H(B/A), it is an information collecting network, otherwise an information spreading network. Finally, different real networks (directed and undirected, weighted and unweighted) are classified according to our general scheme.

  10. Theoretical studies of combustion dynamics

    Energy Technology Data Exchange (ETDEWEB)

    Bowman, J.M. [Emory Univ., Atlanta, GA (United States)

    1993-12-01

    The basic objectives of this research program are to develop and apply theoretical techniques to fundamental dynamical processes of importance in gas-phase combustion. There are two major areas currently supported by this grant. One is reactive scattering of diatom-diatom systems, and the other is the dynamics of complex formation and decay based on L{sup 2} methods. In all of these studies, the authors focus on systems that are of interest experimentally, and for which potential energy surfaces based, at least in part, on ab initio calculations are available.

  11. Theoretical concept of credit risk management

    Directory of Open Access Journals (Sweden)

    Dragosavac Miloš

    2014-01-01

    Full Text Available With the development of the banking business and the economy, exposure to different types of risk becomes greater. Identifying all risks and adequate measures have become an extremely important factor in business success in the increasingly complex economic conditions. Risks in business, in the last ten years have become the burning issue in debates among the scientific experts. With the aim of stable development of its business and equal participation in a large competitive market, primarily in order to protect its depositors and preserve system stability and liquidity, banks have to incorporate into their strategic goals the strategies of banking risks. Credit risk is of great value within the overall risks that accompany the business activity of banks, economy, and other forms of business organization. Its nature and presence in all segments of the business activities speak enough about its importance and the need for its management. Permanently growing trend of credit risk is a reality faced by not only the banking organization, but also the subjects in the economic and non-economic sector, which makes the issue of credit risk extremely important and relevant. The subject of this paper is a theoretical analysis of credit risk in banking business. Banking operations are increasingly exposed to credit risk, which indicates the inability of banks to settle their claims based on previously approved loans, and this is the case-in-point for this specific research subject.

  12. A theoretical analysis of vertical flow equilibrium

    Energy Technology Data Exchange (ETDEWEB)

    Yortsos, Y.C.

    1992-01-01

    The assumption of Vertical Flow Equilibrium (VFE) and of parallel flow conditions, in general, is often applied to the modeling of flow and displacement in natural porous media. However, the methodology for the development of the various models is rather intuitive, and no rigorous method is currently available. In this paper, we develop an asymptotic theory using as parameter the variable R{sub L} = (L/H){radical}(k{sub V})/(k{sub H}). It is rigorously shown that present models represent the leading order term of an asymptotic expansion with respect to 1/R{sub L}{sup 2}. Although this was numerically suspected, it is the first time that is is theoretically proved. Based on the general formulation, a series of models are subsequently obtained. In the absence of strong gravity effects, they generalize previous works by Zapata and Lake (1981), Yokoyama and Lake (1981) and Lake and Hirasaki (1981), on immiscible and miscible displacements. In the limit of gravity-segregated flow, we prove conditions for the fluids to be segregated and derive the Dupuit and Dietz (1953) approximations. Finally, we also discuss effects of capillarity and transverse dispersion.

  13. THEORETICAL FOUNDATIONS EFFICIENT MASS VALUATION

    Directory of Open Access Journals (Sweden)

    Koshel A.

    2016-08-01

    composition of results and consideration of cost, given different definitions of efficiency and offered various ways to measure. The question of social, environmental and other efficiency are considered generally as elements that complement economic efficiency. For land evaluation work efficiency are the following types: economic (increase in tax collection and tax payments; ecological (removal of the negative impact on the earth, the environment; social (improvement of living conditions of the population in a particular area; information (identifying objects not previously recorded, increasing the number of taxpayers. Achieving economic or social effect due to the need for ongoing and one-time costs. The ongoing related costs included in cost of production. In order to improve the efficiency of monetary value of land mass based methods, in our view, to apply emergency measures to correct the situation in the monetary evaluation assessments, namely: - need to develop clear and understandable regulations for the implementation of mass land valuation, passage of expertise, information and other aspects of the implementation of inventory and evaluation work; - should develop new or significantly alter already existing methods so that they meet the requirements of international law, international standards of evaluation, and allow the user to understand the simple manufacturing process works; - appraiser who performs the mass appraisal should be fully independent and protected by law from public authorities.

  14. Balance and bilateral skills of selected previously disadvantaged ...

    African Journals Online (AJOL)

    Balance and bilateral skills of selected previously disadvantaged children aged 9 to 12 years. Eileen K Africa, Karel J Van Deventer. Abstract. The main aim of the study was to design an appropriate motor skills development programme that could be implemented in any primary school to improve the fundamental motor ...

  15. 24 CFR 1710.552 - Previously accepted state filings.

    Science.gov (United States)

    2010-04-01

    ... of Substantially Equivalent State Law § 1710.552 Previously accepted state filings. (a) Materials... and contracts or agreements contain notice of purchaser's revocation rights. In addition see § 1715.15..., unless the developer is obligated to do so in the contract. (b) If any such filing becomes inactive or...

  16. Executive Function in Previously Institutionalized Children.

    Science.gov (United States)

    Merz, Emily C; Harlé, Katia M; Noble, Kimberly G; McCall, Robert B

    2016-06-01

    In studies of children adopted from institutions, being raised in an institution has been associated consistently with an increased risk of persistent cognitive, academic, and social-emotional problems. These findings raise questions about the neurocognitive mechanisms that contribute to these negative outcomes. Theory and models based on studies of animals indicate that development of the prefrontal cortex (PFC) and executive function (EF) may be particularly susceptible to environmental influences during early childhood. In this article, we review recent studies of postinstitutionalized children that examined EF components such as inhibitory control, working memory, shifting, and planning. We then describe emerging research on the structure and function of the PFC. Converging evidence suggests both EF difficulties and alterations in development of the PFC following early institutionalization. We conclude by discussing possible explanations for these findings and implications for prevention and intervention, and by offering suggestions for ongoing research.

  17. Theoretical and experimental study for possibility of nuclear burn wave initiation in Z-pinch due to M=0 instability development

    International Nuclear Information System (INIS)

    Bakshaev, Yu.L.; Blinov, P.I.; Chernenko, A.S.

    2001-01-01

    The development of sausage type (m=0) instabilities in initially homogeneous plasma column leads to the appearance of dense plasma. Temperature of this plasma is substantially higher, than the average plasma temperature in the column. Therefore the reasonable idea might be the using of this high temperature areas for nuclear burn wave initiation. The study for possibility of this phenomenon is presented. (author)

  18. Pretense and Possibility--A Theoretical Proposal about the Effects of Pretend Play on Development: Comment on Lillard et al. (2013)

    Science.gov (United States)

    Walker, Caren M.; Gopnik, Alison

    2013-01-01

    The review by Lillard et al. (2013) highlighted the need for additional research to better clarify the nature of the relationship between pretend play and development. However, the authors did not provide a proposal for how to structure the direction of this future work. Here, we provide a possible framework for generating additional research.…

  19. Multiple Learning Approaches in the Professional Development of School Leaders -- Theoretical Perspectives and Empirical Findings on Self-assessment and Feedback

    Science.gov (United States)

    Huber, Stephan Gerhard

    2013-01-01

    This article investigates the use of multiple learning approaches and different modes and types of learning in the (continuous) professional development (PD) of school leaders, particularly the use of self-assessment and feedback. First, formats and multiple approaches to professional learning are described. Second, a possible approach to…

  20. From Theory-Inspired to Theory-Based Interventions: A Protocol for Developing and Testing a Methodology for Linking Behaviour Change Techniques to Theoretical Mechanisms of Action.

    Science.gov (United States)

    Michie, Susan; Carey, Rachel N; Johnston, Marie; Rothman, Alexander J; de Bruin, Marijn; Kelly, Michael P; Connell, Lauren E

    2016-07-11

    Understanding links between behaviour change techniques (BCTs) and mechanisms of action (the processes through which they affect behaviour) helps inform the systematic development of behaviour change interventions. This research aims to develop and test a methodology for linking BCTs to their mechanisms of action. Study 1 (published explicit links): Hypothesised links between 93 BCTs (from the 93-item BCT taxonomy, BCTTv1) and mechanisms of action will be identified from published interventions and their frequency, explicitness and precision documented. Study 2 (expert-agreed explicit links): Behaviour change experts will identify links between 61 BCTs and 26 mechanisms of action in a formal consensus study. Study 3 (integrated matrix of explicit links): Agreement between studies 1 and 2 will be evaluated and a new group of experts will discuss discrepancies. An integrated matrix of BCT-mechanism of action links, annotated to indicate strength of evidence, will be generated. Study 4 (published implicit links): To determine whether groups of co-occurring BCTs can be linked to theories, we will identify groups of BCTs that are used together from the study 1 literature. A consensus exercise will be used to rate strength of links between groups of BCT and theories. A formal methodology for linking BCTs to their hypothesised mechanisms of action can contribute to the development and evaluation of behaviour change interventions. This research is a step towards developing a behaviour change 'ontology', specifying relations between BCTs, mechanisms of action, modes of delivery, populations, settings and types of behaviour.

  1. Information theoretic preattentive saliency

    DEFF Research Database (Denmark)

    Loog, Marco

    2011-01-01

    Employing an information theoretic operational definition of bottom-up attention from the field of computational visual perception a very general expression for saliency is provided. As opposed to many of the current approaches to determining a saliency map there is no need for an explicit data...... of which features, image information is described. We illustrate our result by determining a few specific saliency maps based on particular choices of features. One of them makes the link with the mapping underlying well-known Harris interest points, which is a result recently obtained in isolation...

  2. Theoretical solid state physics

    CERN Document Server

    Haug, Albert

    2013-01-01

    Theoretical Solid State Physics, Volume 1 focuses on the study of solid state physics. The volume first takes a look at the basic concepts and structures of solid state physics, including potential energies of solids, concept and classification of solids, and crystal structure. The book then explains single-electron approximation wherein the methods for calculating energy bands; electron in the field of crystal atoms; laws of motion of the electrons in solids; and electron statistics are discussed. The text describes general forms of solutions and relationships, including collective electron i

  3. Theoretical Optics An Introduction

    CERN Document Server

    Römer, Hartmann

    2004-01-01

    Starting from basic electrodynamics, this volume provides a solid, yet concise introduction to theoretical optics, containing topics such as nonlinear optics, light-matter interaction, and modern topics in quantum optics, including entanglement, cryptography, and quantum computation. The author, with many years of experience in teaching and research, goes way beyond the scope of traditional lectures, enabling readers to keep up with the current state of knowledge. Both content and presentation make it essential reading for graduate and phD students as well as a valuable reference for researche

  4. Theoretical high energy physics

    International Nuclear Information System (INIS)

    Lee, T.D.

    1991-01-01

    This report discusses theoretical research in high energy physics at Columbia University. Some of the research topics discussed are: quantum chromodynamics with dynamical fermions; lattice gauge theory; scattering of neutrinos by photons; atomic physics constraints on the properties of ultralight-ultraweak gauge bosons; black holes; Chern- Simons physics; S-channel theory of superconductivity; charged boson system; gluon-gluon interactions; high energy scattering in the presence of instantons; anyon physics; causality constraints on primordial magnetic manopoles; charged black holes with scalar hair; properties of Chern-Aimona-Higgs solitons; and extended inflationary universe

  5. Theoretical astrophysics an introduction

    CERN Document Server

    Bartelmann, Matthias

    2013-01-01

    A concise yet comprehensive introduction to the central theoretical concepts of modern astrophysics, presenting hydrodynamics, radiation, and stellar dynamics all in one textbook. Adopting a modular structure, the author illustrates a small number of fundamental physical methods and principles, which are sufficient to describe and understand a wide range of seemingly very diverse astrophysical phenomena and processes. For example, the formulae that define the macroscopic behavior of stellar systems are all derived in the same way from the microscopic distribution function. This function it

  6. Theoretical Fluid Dynamics

    CERN Document Server

    Shivamoggi, Bhimsen K

    1998-01-01

    "Although there are many texts and monographs on fluid dynamics, I do not know of any which is as comprehensive as the present book. It surveys nearly the entire field of classical fluid dynamics in an advanced, compact, and clear manner, and discusses the various conceptual and analytical models of fluid flow." - Foundations of Physics on the first edition. Theoretical Fluid Dynamics functions equally well as a graduate-level text and a professional reference. Steering a middle course between the empiricism of engineering and the abstractions of pure mathematics, the author focuses

  7. Assessment of identity development and identity diffusion in adolescence - Theoretical basis and psychometric properties of the self-report questionnaire AIDA

    Directory of Open Access Journals (Sweden)

    Goth Kirstin

    2012-07-01

    Full Text Available Abstract Background In the continuing revision of Diagnostic and Statistical Manual (DSM-V “identity” is integrated as a central diagnostic criterion for personality disorders (self-related personality functioning. According to Kernberg, identity diffusion is one of the core elements of borderline personality organization. As there is no elaborated self-rating inventory to assess identity development in healthy and disturbed adolescents, we developed the AIDA (Assessment of Identity Development in Adolescence questionnaire to assess this complex dimension, varying from “Identity Integration” to “Identity Diffusion”, in a broad and substructured way and evaluated its psychometric properties in a mixed school and clinical sample. Methods Test construction was deductive, referring to psychodynamic as well as social-cognitive theories, and led to a special item pool, with consideration for clarity and ease of comprehension. Participants were 305 students aged 12–18 attending a public school and 52 adolescent psychiatric inpatients and outpatients with diagnoses of personality disorders (N = 20 or other mental disorders (N = 32. Convergent validity was evaluated by covariations with personality development (JTCI 12–18 R scales, criterion validity by differences in identity development (AIDA scales between patients and controls. Results AIDA showed excellent total score (Diffusion: α = .94, scale (Discontinuity: α = .86; Incoherence: α = .92 and subscale (α = .73-.86 reliabilities. High levels of Discontinuity and Incoherence were associated with low levels in Self Directedness, an indicator of maladaptive personality functioning. Both AIDA scales were significantly different between PD-patients and controls with remarkable effect sizes (d of 2.17 and 1.94 standard deviations. Conclusion AIDA is a reliable and valid instrument to assess normal and disturbed identity in adolescents. Studies for further

  8. Dynamic density functional theory with hydrodynamic interactions: theoretical development and application in the study of phase separation in gas-liquid systems.

    Science.gov (United States)

    Kikkinides, E S; Monson, P A

    2015-03-07

    Building on recent developments in dynamic density functional theory, we have developed a version of the theory that includes hydrodynamic interactions. This is achieved by combining the continuity and momentum equations eliminating velocity fields, so the resulting model equation contains only terms related to the fluid density and its time and spatial derivatives. The new model satisfies simultaneously continuity and momentum equations under the assumptions of constant dynamic or kinematic viscosity and small velocities and/or density gradients. We present applications of the theory to spinodal decomposition of subcritical temperatures for one-dimensional and three-dimensional density perturbations for both a van der Waals fluid and for a lattice gas model in mean field theory. In the latter case, the theory provides a hydrodynamic extension to the recently studied dynamic mean field theory. We find that the theory correctly describes the transition from diffusive phase separation at short times to hydrodynamic behaviour at long times.

  9. Trust as a Key Variable of Sustainable Development and Public Happiness: A Historical and Theoretical Example Regarding the Creation of Money

    OpenAIRE

    Genovese, Nicola; La Spada, Maria Grazia

    2014-01-01

    This article purports to trace the origin of money on the basis of factors in interpersonal relationships, affecting a sustainable development and public happiness, namely trust, reciprocity and the concept of we-rationality. Both the historical approach and the one based on traditional economic theory have been found inadequate mainly because they did not take into account these factors. The hypothesis expounded in the paper is that these values underlaid the beginning of economic activity. ...

  10. Theoretical aspects of coping strategies study

    OpenAIRE

    Kabiyeva, M.; Kasen, G. A.

    2015-01-01

    In article based on a thorough analysis of classical and modern foreign and domestic literature examines the notion of coping strategies, approaches to the understanding of coping. Theoretically proved that coping is an individual way to interact with the situation according to its own logic, psychological capabilities and its importance in human life, the level of development of coping resources provides a successful adaptation to stress. From the analysis of theoretical literature, we saw t...

  11. An in-depth analysis of theoretical frameworks for the study of care coordination

    Directory of Open Access Journals (Sweden)

    Sabine Van Houdt

    2013-06-01

    Full Text Available Introduction: Complex chronic conditions often require long-term care from various healthcare professionals. Thus, maintaining quality care requires care coordination. Concepts for the study of care coordination require clarification to develop, study and evaluate coordination strategies. In 2007, the Agency for Healthcare Research and Quality defined care coordination and proposed five theoretical frameworks for exploring care coordination. This study aimed to update current theoretical frameworks and clarify key concepts related to care coordination. Methods: We performed a literature review to update existing theoretical frameworks. An in-depth analysis of these theoretical frameworks was conducted to formulate key concepts related to care coordination.Results: Our literature review found seven previously unidentified theoretical frameworks for studying care coordination. The in-depth analysis identified fourteen key concepts that the theoretical frameworks addressed. These were ‘external factors’, ‘structure’, ‘tasks characteristics’, ‘cultural factors’, ‘knowledge and technology’, ‘need for coordination’, ‘administrative operational processes’, ‘exchange of information’, ‘goals’, ‘roles’, ‘quality of relationship’, ‘patient outcome’, ‘team outcome’, and ‘(interorganizational outcome’.Conclusion: These 14 interrelated key concepts provide a base to develop or choose a framework for studying care coordination. The relational coordination theory and the multi-level framework are interesting as these are the most comprehensive.

  12. Theoretical physics. Quantum mechanics

    International Nuclear Information System (INIS)

    Rebhan, Eckhard

    2008-01-01

    From the first in two comprehensive volumes appeared Theoretical Physics of the author by this after Mechanics and Electrodynamics also Quantum mechanics appears as thinner single volume. First the illustrative approach via wave mechanics is reproduced. The more abstract Hilbert-space formulation introduces the author later by postulates, which are because of the preceding wave mechanics sufficiently plausible. All concepts of quantum mechanics, which contradict often to the intuitive understanding formed by macroscopic experiences, are extensively discussed and made by means of many examples as well as problems - in the largest part provided with solutions - understandable. To the interpretation of quantum mechanics an extensive special chapter is dedicated. this book arose from courses on theoretical physics, which the author has held at the Heinrich-Heine University in Duesseldorf, and was in numerous repetitions fitted to the requirement of the studyings. it is so designed that it is also after the study suited as reference book or for the renewing. All problems are very thoroughly and such extensively studied that each step is separately reproducible. About motivation and good understandability is cared much

  13. Dark matter: Theoretical perspectives

    International Nuclear Information System (INIS)

    Turner, M.S.

    1993-01-01

    The author both reviews and makes the case for the current theoretical prejudice: a flat Universe whose dominant constituent is nonbaryonic dark matter, emphasizing that this is still a prejudice and not yet fact. The theoretical motivation for nonbaryonic dark matter is discussed in the context of current elementary-particle theory, stressing that (i) there are no dark-matter candidates within the open-quotes standard modelclose quotes of particle physics, (ii) there are several compelling candidates within attractive extensions of the standard model of particle physics, and (iii) the motivation for these compelling candidates comes first and foremost from particle physics. The dark-matter problem is now a pressing issue in both cosmology and particle physics, and the detection of particle dark matter would provide evidence for open-quotes new physics.close quotes The compelling candidates are a very light axion (10 -6 --10 -4 eV), a light neutrino (20--90 eV), and a heavy neutralino (10 GeV--2 TeV). The production of these particles in the early Universe and the prospects for their detection are also discussed. The author briefly mentions more exotic possibilities for the dark matter, including a nonzero cosmological constant, superheavy magnetic monopoles, and decaying neutrinos. 119 refs

  14. Dark matter: Theoretical perspectives

    Energy Technology Data Exchange (ETDEWEB)

    Turner, M.S. (Chicago Univ., IL (United States). Enrico Fermi Inst. Fermi National Accelerator Lab., Batavia, IL (United States))

    1993-01-01

    I both review and make the case for the current theoretical prejudice: a flat Universe whose dominant constituent is nonbaryonic dark matter, emphasizing that this is still a prejudice and not yet fact. The theoretical motivation for nonbaryonic dark matter is discussed in the context of current elementary-particle theory, stressing that: (1) there are no dark matter candidates within the standard model of particle physics; (2) there are several compelling candidates within attractive extensions of the standard model of particle physics; and (3) the motivation for these compelling candidates comes first and foremost from particle physics. The dark-matter problem is now a pressing issue in both cosmology and particle physics, and the detection of particle dark matter would provide evidence for new physics.'' The compelling candidates are: a very light axion ( 10[sup [minus]6] eV--10[sup [minus]4] eV); a light neutrino (20 eV--90 eV); and a heavy neutralino (10 GeV--2 TeV). The production of these particles in the early Universe and the prospects for their detection are also discussed. I briefly mention more exotic possibilities for the dark matter, including a nonzero cosmological constant, superheavy magnetic monopoles, and decaying neutrinos.

  15. Dark matter: Theoretical perspectives

    Energy Technology Data Exchange (ETDEWEB)

    Turner, M.S. [Chicago Univ., IL (United States). Enrico Fermi Inst.]|[Fermi National Accelerator Lab., Batavia, IL (United States)

    1993-01-01

    I both review and make the case for the current theoretical prejudice: a flat Universe whose dominant constituent is nonbaryonic dark matter, emphasizing that this is still a prejudice and not yet fact. The theoretical motivation for nonbaryonic dark matter is discussed in the context of current elementary-particle theory, stressing that: (1) there are no dark matter candidates within the standard model of particle physics; (2) there are several compelling candidates within attractive extensions of the standard model of particle physics; and (3) the motivation for these compelling candidates comes first and foremost from particle physics. The dark-matter problem is now a pressing issue in both cosmology and particle physics, and the detection of particle dark matter would provide evidence for ``new physics.`` The compelling candidates are: a very light axion ( 10{sup {minus}6} eV--10{sup {minus}4} eV); a light neutrino (20 eV--90 eV); and a heavy neutralino (10 GeV--2 TeV). The production of these particles in the early Universe and the prospects for their detection are also discussed. I briefly mention more exotic possibilities for the dark matter, including a nonzero cosmological constant, superheavy magnetic monopoles, and decaying neutrinos.

  16. Thoron Mitigation System based on charcoal bed for applications in thorium fuel cycle facilities (part 1): Development of theoretical models for design considerations.

    Science.gov (United States)

    Sahoo, B K; Sudeep Kumara, K; Karunakara, N; Gaware, J J; Sapra, B K; Mayya, Y S

    2017-06-01

    Regulating the environmental discharge of 220 Rn (historically known as thoron) and its decay products from thorium processing facilities is important for protection of environment and general public living in the vicinities. Activated charcoal provides an effective solution to this problem because of its high adsorption capacity to gaseous element like radon. In order to design and develop a charcoal based Thoron Mitigation System, a mathematical model has been developed in the present work for studying the 220 Rn transport and adsorption in a flow through charcoal bed and estimating the 220 Rn mitigation factor (MF) as a function of system and operating parameters. The model accounts for inter- and intra-grain diffusion, advection, radioactive decay and adsorption processes. Also, the effects of large void fluctuation and wall channeling on the mitigation factor have been included through a statistical model. Closed form solution has been provided for the MF in terms of adsorption coefficient, system dimensions, grain size, flow rate and void fluctuation exponent. It is shown that the delay effects due to intra grain diffusion plays a significant role thereby rendering external equilibrium assumptions unsuitable. Also, the application of the statistical model clearly demonstrates the transition from the exponential MF to a power-law form and shows how the occurrence of channels with low probability can lower mitigation factor by several orders of magnitude. As a part of aiding design, the model is further extended to optimise the bed dimensions in respect of pressure drop and MF. The application of the results for the design and development of a practically useful charcoal bed is discussed. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Does the international trade-system help promote peace? : a critical study of WTO's first benefit within the theoretical frames of peace- and development studies

    OpenAIRE

    Berg, Lars Martin

    2009-01-01

    The World Trade Organization claims to help keep peace in their declaration Ten Benefits of the WTO trading system (WTO 2008a). This thesis is a critical study of this peace claim within the frames of both peace- and development studies. The main argument of the thesis is that the peace claim of WTO is exaggerated. When adopting peace studies own definitions of peace and view it together with WTO’s narrow peace definition, the peace claim of WTO is up for debate. Current globalization and tra...

  18. Sports and Youth Development Programs: Theoretical and Practical Implication of Early Adolescent Participation in Multiple Instances of Structured Out-of-School (OST Activity

    Directory of Open Access Journals (Sweden)

    Nicole Zarrett

    2007-06-01

    Full Text Available Among today’s youth, the most ubiquitous OST activity is sports. However, many of these youth are also participating in at least one other OST activity along with their participation in sports. Using longitudinal data from 1,622 youth (56.8% female from the first three waves (Grades 5, 6, and 7 of the 4-H Study of Positive Youth Development (PYD, we employed a pattern-centered approach to assess differences in adolescent functioning depending on what types of OST activities youth were participating in along with their sports participation. Our findings suggest that youth benefit from their sports participation differently depending on what other types of additional activities they participate in during their out-of-school time. In particular, a participation pattern characterized by high participation in sports and Youth Development Programs was found to be the most effective activity profile for promoting PYD and preventing youth problems. Implications of these findings in research and practice are discussed.

  19. On the development of system-theoretic tools for the design of integrated health monitoring and controls for rocket propulsion systems

    Science.gov (United States)

    Helmicki, Arthur J.

    1991-01-01

    As NASA continues to develop various advanced propulsion technologies for space exploration, two factors are becoming increasingly dominant in design specifications: increase operational reliability and decrease operational cost. One approach that has been proposed to meet these challenges is to incorporate into current and future rocket propulsion systems some sort of diagnostic/monitoring capability in the form of a Health Monitoring System (HMS). HMS technology offers the promise of increased operational reliability through its ability to assess system performance, detect and isolate degradations and/or failures, and modify system operation so as to minimize negative effects on performance. The purpose of this research is to study, from a systems engineering perspective, the particular issues of analysis and synthesis for generic HMS's.

  20. Local recurrence risk after previous salvage mastectomy.

    Science.gov (United States)

    Tanabe, M; Iwase, T; Okumura, Y; Yoshida, A; Masuda, N; Nakatsukasa, K; Shien, T; Tanaka, S; Komoike, Y; Taguchi, T; Arima, N; Nishimura, R; Inaji, H; Ishitobi, M

    2016-07-01

    Breast-conserving surgery is a standard treatment for early breast cancer. For ipsilateral breast tumor recurrence (IBTR) after breast-conserving surgery, salvage mastectomy is the current standard surgical procedure. However, it is not rare for patients with IBTR who have received salvage mastectomy to develop local recurrence. In this study, we examined the risk factors of local recurrence after salvage mastectomy for IBTR. A total of 118 consecutive patients who had histologically confirmed IBTR without distant metastases and underwent salvage mastectomy without irradiation for IBTR between 1989 and 2008 were included from eight institutions in Japan. The risk factors of local recurrence were assessed. The median follow-up period from salvage mastectomy for IBTR was 4.6 years. Patients with pN2 or higher on diagnosis of the primary tumor showed significantly poorer local recurrence-free survival than those with pN0 or pN1 at primary tumor (p mastectomy for IBTR. Further research and validation studies are needed. (UMIN-CTR number UMIN000008136). Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. THEORETICAL ASPECTS OF FILMMUSIC STUDY

    Directory of Open Access Journals (Sweden)

    Egorova Tatiana K.

    2014-04-01

    Full Text Available In this article, author analyzes the theoretical aspects of the film music study taking into account with modern realities in the development of world film-process and attempts to its scientific understanding. Need for innovation in this area is long overdue, because the existing on this topic nonfiction no longer meets the new aesthetic and art-practical achievements and innovations in the film music development at the XXI century. Related to the phenomenon of music in screen arts a number of new terms and concepts require a certain adjustment as well. Their range of action is not yet fully defined. Author of the article offered her version of their content-semantic interpretation (largely experimental designed to promote new research methods for the film music study.

  2. Indiscriminate behaviors in previously institutionalized young children.

    Science.gov (United States)

    Gleason, Mary Margaret; Fox, Nathan A; Drury, Stacy S; Smyke, Anna T; Nelson, Charles A; Zeanah, Charles H

    2014-03-01

    This study included 54-month-old children with a history of institutional care. Our goal was to: (1) examine differences in indiscriminate social behaviors in children with a history of institutional care compared with home-reared children; (2) test whether foster care reduces indiscriminate social behaviors in a randomized controlled trial; and (3) examine early predictors of indiscriminate behaviors. Participants were 58 children with a history of institutional care and 31 never-institutionalized control (NIG) subjects enrolled in a randomized controlled trial of foster care for institutional care, assessed from toddlerhood to 54 months. Indiscriminate social behaviors were measured naturalistically by using the Stranger at the Door procedure. In the Stranger at the Door procedure, children with a history of institutional care left with a stranger at higher rates than NIG subjects (33% vs. 3.5%; P Children in the care as usual group left more than NIG subjects (41.9% vs. 3.6%; P ≤ .001). The differences between the foster care group (24.1%) and the care as usual group and between foster care group and NIG were not significant. In a logistic regression, early disorganized attachment behaviors, baseline developmental quotient, and caregiving quality after randomization contributed to variance at 54 months. In the same analysis using only children with a history of institutional care, only disorganized attachment contributed significantly to 54-month indiscriminate social behaviors (Exp[B] = 1.6 [95% confidence interval: 1.1-2.5]). Observed socially indiscriminate behaviors at 54 months were associated with prolonged exposure to institutional care. Young children raised in conditions of deprivation who fail to develop organized attachments as toddlers are at increased risk for subsequent indiscriminate behaviors.

  3. Theoretical Molecular Biophysics

    CERN Document Server

    Scherer, Philipp

    2010-01-01

    "Theoretical Molecular Biophysics" is an advanced study book for students, shortly before or after completing undergraduate studies, in physics, chemistry or biology. It provides the tools for an understanding of elementary processes in biology, such as photosynthesis on a molecular level. A basic knowledge in mechanics, electrostatics, quantum theory and statistical physics is desirable. The reader will be exposed to basic concepts in modern biophysics such as entropic forces, phase separation, potentials of mean force, proton and electron transfer, heterogeneous reactions coherent and incoherent energy transfer as well as molecular motors. Basic concepts such as phase transitions of biopolymers, electrostatics, protonation equilibria, ion transport, radiationless transitions as well as energy- and electron transfer are discussed within the frame of simple models.

  4. Intelligence, previous convictions and interrogative suggestibility: a path analysis of alleged false-confession cases.

    Science.gov (United States)

    Sharrock, R; Gudjonsson, G H

    1993-05-01

    The main purpose of this study was to investigate the relationship between interrogative suggestibility and previous convictions among 108 defendants in criminal trials, using a path analysis technique. It was hypothesized that previous convictions, which may provide defendants with interrogative experiences, would correlate negatively with 'shift' as measured by the Gudjonsson Suggestibility Scale (Gudjonsson, 1984a), after intelligence and memory had been controlled for. The hypothesis was partially confirmed and the theoretical and practical implications of the findings are discussed.

  5. Ensemble modeling of stochastic unsteady open-channel flow in terms of its time-space evolutionary probability distribution - Part 1: theoretical development

    Science.gov (United States)

    Dib, Alain; Kavvas, M. Levent

    2018-03-01

    The Saint-Venant equations are commonly used as the governing equations to solve for modeling the spatially varied unsteady flow in open channels. The presence of uncertainties in the channel or flow parameters renders these equations stochastic, thus requiring their solution in a stochastic framework in order to quantify the ensemble behavior and the variability of the process. While the Monte Carlo approach can be used for such a solution, its computational expense and its large number of simulations act to its disadvantage. This study proposes, explains, and derives a new methodology for solving the stochastic Saint-Venant equations in only one shot, without the need for a large number of simulations. The proposed methodology is derived by developing the nonlocal Lagrangian-Eulerian Fokker-Planck equation of the characteristic form of the stochastic Saint-Venant equations for an open-channel flow process, with an uncertain roughness coefficient. A numerical method for its solution is subsequently devised. The application and validation of this methodology are provided in a companion paper, in which the statistical results computed by the proposed methodology are compared against the results obtained by the Monte Carlo approach.

  6. Can't do it, won't do it! Developing a theoretically framed intervention to encourage better decontamination practice in Scottish dental practices

    Directory of Open Access Journals (Sweden)

    Bonetti Debbie

    2009-06-01

    Full Text Available Abstract Background Guidance on the cleaning of dental instruments in primary care has recently been published. The aims of this study are to determine if the publication of the guidance document was enough to influence decontamination best practice and to design an implementation intervention strategy, should it be required. Methods A postal questionnaire assessing current decontamination practice and beliefs was sent to a random sample of 200 general dental practitioners. Results Fifty-seven percent (N = 113 of general dental practitioners responded. The survey showed large variation in what dentists self-reported doing, perceived as necessary or practical to do, were willing to do, felt able to do, as well as what they planned to change. Only 15% self-reported compliance with the five key guideline-recommended individual-level decontamination behaviours; only 2% reported compliance with all 11 key practice-level behaviours. The results also showed that our participants were almost equally split between dentists who were completely unmotivated to implement best decontamination practice or else highly motivated. The results suggested there was scope for further enhancing the implementation of decontamination guidance, and that an intervention with the greatest likelihood of success would require a tailored format, specifically targeting components of the theory of planned behaviour (attitude, perceived behavioural control, intention and implementation intention theory (action planning. Conclusion Considerable resources are devoted to encouraging clinicians to implement evidence-based practice using interventions with erratic success records, or no known applicability to a specific clinical behaviour, selected mainly by means of researchers' intuition or optimism. The methodology used to develop this implementation intervention is not limited to decontamination or to a single segment of primary care. It is also in accordance with the preliminary

  7. Development of a permanently controllable rotating biopsy device. Pt. I. Theoretical considerations and in-vitro results for five different prototypes

    International Nuclear Information System (INIS)

    Schaefer, Philipp Jost; Jahnke, T.; Andres, H.; Heller, M.; Schaefer, F.K.; Hedderich, J.

    2009-01-01

    Purpose: to develop different prototypes of permanently controllable rotating biopsy devices with determination of the most efficient prototype in biopsies in bovine myocardium. Materials and Methods: Five different prototypes of 18-gauge rotating biopsy devices were designed and constructed, four (1-4) with various drill-like cutting edges and one (5) cannula type with a lancet-like helically bent cutting edge. Using bovine myocardium as the biopsy tissue, n = 100 specimens per prototype were obtained, and a quantitative analysis including tissue fragmentation, length in mm and weight in mg was carried out. For statistical analysis, the chi-square test for tissue fragmentation and Kruskal-Wallis test for the parameters length and weight were calculated. Results: prototype 5 showed the highest rate of extraction of one-fragment specimens in n=66 cases and the lowest rate of failure to obtain tissue in n=11 cases. The mean length/weight were 4.15 mm/3.91 mg for prototype 1, 1.80 mm/1.66 mg for prototype 2, 4.61 mm/3.28 mg for prototype 3, 5.20 mm/3.74 mg for prototype 4, and 9.57 mm/6.97 mg for prototype 5. In all three categories, prototype 5 was significantly superior to the prototypes 1-4 with p < 0.001. Conclusion: the cannula type with a lancet-like helically bent cutting edge proved to be the most efficient prototype and may now be tested competitively against established automated biopsy devices in vitro. (orig.)

  8. Set-theoretic methods in control

    CERN Document Server

    Blanchini, Franco

    2015-01-01

    The second edition of this monograph describes the set-theoretic approach for the control and analysis of dynamic systems, both from a theoretical and practical standpoint.  This approach is linked to fundamental control problems, such as Lyapunov stability analysis and stabilization, optimal control, control under constraints, persistent disturbance rejection, and uncertain systems analysis and synthesis.  Completely self-contained, this book provides a solid foundation of mathematical techniques and applications, extensive references to the relevant literature, and numerous avenues for further theoretical study. All the material from the first edition has been updated to reflect the most recent developments in the field, and a new chapter on switching systems has been added.  Each chapter contains examples, case studies, and exercises to allow for a better understanding of theoretical concepts by practical application. The mathematical language is kept to the minimum level necessary for the adequate for...

  9. Rates of induced abortion in Denmark according to age, previous births and previous abortions

    Directory of Open Access Journals (Sweden)

    Marie-Louise H. Hansen

    2009-11-01

    Full Text Available Background: Whereas the effects of various socio-demographic determinants on a woman's risk of having an abortion are relatively well-documented, less attention has been given to the effect of previous abortions and births. Objective: To study the effect of previous abortions and births on Danish women's risk of an abortion, in addition to a number of demographic and personal characteristics. Data and methods: From the Fertility of Women and Couples Dataset we obtained data on the number of live births and induced abortions by year (1981-2001, age (16-39, county of residence and marital status. Logistic regression analysis was used to estimate the influence of the explanatory variables on the probability of having an abortion in a relevant year. Main findings and conclusion: A woman's risk of having an abortion increases with the number of previous births and previous abortions. Some interactions were was found in the way a woman's risk of abortion varies with calendar year, age and parity. The risk of an abortion for women with no children decreases while the risk of an abortion for women with children increases over time. Furthermore, the risk of an abortion decreases with age, but relatively more so for women with children compared to childless women. Trends for teenagers are discussed in a separate section.

  10. Intimate partner violence theoretical considerations: moving towards a contextual framework.

    Science.gov (United States)

    Bell, Kathryn M; Naugle, Amy E

    2008-10-01

    Several theories have been developed to provide a conceptual understanding of intimate partner violence (IPV) episodes. Although each of these theories has found some degree of empirical support, they are limited in their explanatory power of IPV episodes and their ability to significantly impact the efficacy of IPV prevention and treatment programs. The current paper provides a review and critique of current IPV theories and highlights strategies for improving upon these theories. An alternative theoretical conceptualization is introduced that incorporates existing IPV and functional analytic literature into a contextual framework for conceptualizing IPV episodes. Components of the IPV contextual framework include distal, static and proximal antecedents; motivating factors; behavioral repertoire; discriminative stimuli (i.e. environmental cues/signals); verbal rules; and IPV consequences. The proposed theoretical framework offers two primary advantages over former IPV theories. First, it provides a comprehensive conceptualization of IPV by integrating components of previous IPV theories and their related empirical findings into one, cohesive conceptual framework. Additionally, it allows for a more fine-grained analysis of more proximal variables potentially related to discrete IPV episodes. A discussion of how the proposed theoretical framework may influence future IPV research and clinical practice is provided.

  11. Real-time Identification and Control of Satellite Signal Impairments Solution and Application of the Stratonovich Equation Part 1. Theoretical Development

    Science.gov (United States)

    Manning, Robert M.

    2016-01-01

    As satellite communications systems become both more complex and reliant with respect to their operating environment, it has become imperative to be able to identify, during real-time operation, the onset of one or more impairments to the quality of overall communications system integrity. One of the most important aspects to monitor of a satellite link operating within the Earth's atmosphere is the signal fading due to the occurrence of rain and/or phase scintillations. This, of course, must be done in the presence of the associated measurement uncertainty or potentially faulty measurement equipment such as in the Advanced Communication Technology Satellite (ACTS) experiment. In the present work, an approach originally suggested in 1991, and apparently still considered iconoclastic, will be significantly developed and applied to the satellite communications link on which the deleterious composite signal fade is the result of one or many component fade mechanisms. Through the measurement (with the attendant uncertainty or 'error' in the measurement) of such a composite fading satellite signal, it is desired to extract the level of each of the individual fading mechanisms so they can be appropriately mitigated before they impact the overall performance of the communications network. Rather than employing simple-minded deterministic filtering to the real-time fading, the present approach is built around all the models and/or descriptions used to describe the individual fade components, including their dynamic evolution. The latter is usually given by a first-order Langevin equation. This circumstance allows the description of the associated temporal transition probability densities of each of the component processes. By using this description, along with the real-time measurements of the composite fade (along with the measurement errors), one can obtain statistical estimates of the levels of each of the component fading mechanisms as well as their predicted values

  12. Theoretical Characterizaiton of Visual Signatures

    Science.gov (United States)

    Kashinski, D. O.; Chase, G. M.; di Nallo, O. E.; Scales, A. N.; Vanderley, D. L.; Byrd, E. F. C.

    2015-05-01

    We are investigating the accuracy of theoretical models used to predict the visible, ultraviolet, and infrared spectra, as well as other properties, of product materials ejected from the muzzle of currently fielded systems. Recent advances in solid propellants has made the management of muzzle signature (flash) a principle issue in weapons development across the calibers. A priori prediction of the electromagnetic spectra of formulations will allow researchers to tailor blends that yield desired signatures and determine spectrographic detection ranges. Quantum chemistry methods at various levels of sophistication have been employed to optimize molecular geometries, compute unscaled vibrational frequencies, and determine the optical spectra of specific gas-phase species. Electronic excitations are being computed using Time Dependent Density Functional Theory (TD-DFT). A full statistical analysis and reliability assessment of computational results is currently underway. A comparison of theoretical results to experimental values found in the literature is used to assess any affects of functional choice and basis set on calculation accuracy. The status of this work will be presented at the conference. Work supported by the ARL, DoD HPCMP, and USMA.

  13. Theoretical perspectives on narrative inquiry.

    Science.gov (United States)

    Emden, C

    1998-04-01

    Narrative inquiry is gaining momentum in the field of nursing. As a research approach it does not have any single heritage of methodology and its practitioners draw upon diverse sources of influence. Central to all narrative inquiry however, is attention to the potential of stories to give meaning to people's lives, and the treatment of data as stories. This is the first of two papers on the topic and addresses the theoretical influences upon a particular narrative inquiry into nursing scholars and scholarship. The second paper, Conducting a narrative analysis, describes the actual narrative analysis as it was conducted in this same study. Together, the papers provide sufficient detail for others wishing to pursue a similar approach to do so, or to develop the ideas and procedures according to their own way of thinking. Within this first theoretical paper, perspectives from Jerome Bruner (1987) and Wade Roof (1993) are outlined. These relate especially to the notion of stories as 'imaginative constructions' and as 'cultural narratives' and as such, highlight the profound importance of stories as being individually and culturally meaningful. As well, perspectives on narrative inquiry from nursing literature are highlighted. Narrative inquiry in this instance lies within the broader context of phenomenology.

  14. Study of some physical aspects previous to design of an exponential experiment

    International Nuclear Information System (INIS)

    Caro, R.; Francisco, J. L. de

    1961-01-01

    This report presents the theoretical study of some physical aspects previous to the design of an exponential facility. The are: Fast and slow flux distribution in the multiplicative medium and in the thermal column, slowing down in the thermal column, geometrical distribution and minimum needed intensity of sources access channels and perturbations produced by possible variations in its position and intensity. (Author) 4 refs

  15. Impacto de la pobreza en el desarrollo cognitivo: un análisis teórico de dos factores mediadores (Impact of Poverty on Cognitive Development. A Theoretical Analysis of Two Mediator Factors

    Directory of Open Access Journals (Sweden)

    Cecilia Clara Mazzoni

    2014-06-01

    Full Text Available RESUMEN: Numerosos estudios han establecido el impacto negativo de la pobreza sobre el desarrollo cognitivo, examinando parcialmente algunos factores mediadores del mismo. El objetivo del presente artículo consiste en realizar un análisis teórico centrado en la estimulación en el hogar y la nutrición como factores mediadores, retomando los resultados de diferentes trabajos desarrollados desde el año 2000. Estos indican que la estimulación en el hogar sería un factor mediador clave del impacto de la pobreza sobre el desarrollo cognitivo, mientras que los efectos del estado nutricional dependerían del grado de severidad del déficit, no siendo determinantes en los casos de desnutrición leve o moderada. Se concluye sobre la importancia teórico-práctica de profundizar en el estudio simultáneo de los factores mediadores implicados. ABSTRACT: Numerous studies have established the negative impact of poverty on cognitive development, by partially examining some mediator factors thereof. The objective of this article is to perform a theoretical analysis focused on home stimulation and nutrition as mediating factors. To do this we took the results of different studies which address this issue, developed since 2000. The results indicate that home stimulation would be a key mediator factor of the impact of poverty on cognitive development, while the effects of nutritional status would depend on the severity of the deficit, not being decisive in cases of mild or moderate undernutrition. We conclude about the theoretical and practical importance of deepen in the simultaneous study of the involved mediators factors.

  16. Previously infertile couples and the newborn intensive care unit.

    Science.gov (United States)

    Lind, R F; Pruitt, R L; Greenfeld, D

    1989-05-01

    Having a newborn child admitted to a newborn intensive care unit can be a traumatic experience for parents; however, parents who previously have been infertile face unique problems in coping with this situation. The authors discuss the difficulties parents must overcome in resolving their crises and in developing a good relationship with their child, or, in some cases, coming to terms with the child's death or ongoing disability. In addition, the authors offer suggestions for effective social work intervention.

  17. Congruency sequence effects are driven by previous-trial congruency, not previous-trial response conflict

    OpenAIRE

    Weissman, Daniel H.; Carp, Joshua

    2013-01-01

    Congruency effects in distracter interference tasks are often smaller after incongruent trials than after congruent trials. However, the sources of such congruency sequence effects (CSEs) are controversial. The conflict monitoring model of cognitive control links CSEs to the detection and resolution of response conflict. In contrast, competing theories attribute CSEs to attentional or affective processes that vary with previous-trial congruency (incongruent vs. congruent). The present study s...

  18. Theoretical Approaches to Coping

    Directory of Open Access Journals (Sweden)

    Sofia Zyga

    2013-01-01

    Full Text Available Introduction: Dealing with stress requires conscious effort, it cannot be perceived as equal to individual's spontaneous reactions. The intentional management of stress must not be confused withdefense mechanisms. Coping differs from adjustment in that the latter is more general, has a broader meaning and includes diverse ways of facing a difficulty.Aim: An exploration of the definition of the term "coping", the function of the coping process as well as its differentiation from other similar meanings through a literature review.Methodology: Three theoretical approaches of coping are introduced; the psychoanalytic approach; approaching by characteristics; and the Lazarus and Folkman interactive model.Results: The strategic methods of the coping approaches are described and the article ends with a review of the approaches including the functioning of the stress-coping process , the classificationtypes of coping strategies in stress-inducing situations and with a criticism of coping approaches.Conclusions: The comparison of coping in different situations is difficult, if not impossible. The coping process is a slow process, so an individual may select one method of coping under one set ofcircumstances and a different strategy at some other time. Such selection of strategies takes place as the situation changes.

  19. Information Theoretic Shape Matching.

    Science.gov (United States)

    Hasanbelliu, Erion; Giraldo, Luis Sanchez; Príncipe, José C

    2014-12-01

    In this paper, we describe two related algorithms that provide both rigid and non-rigid point set registration with different computational complexity and accuracy. The first algorithm utilizes a nonlinear similarity measure known as correntropy. The measure combines second and high order moments in its decision statistic showing improvements especially in the presence of impulsive noise. The algorithm assumes that the correspondence between the point sets is known, which is determined with the surprise metric. The second algorithm mitigates the need to establish a correspondence by representing the point sets as probability density functions (PDF). The registration problem is then treated as a distribution alignment. The method utilizes the Cauchy-Schwarz divergence to measure the similarity/distance between the point sets and recover the spatial transformation function needed to register them. Both algorithms utilize information theoretic descriptors; however, correntropy works at the realizations level, whereas Cauchy-Schwarz divergence works at the PDF level. This allows correntropy to be less computationally expensive, and for correct correspondence, more accurate. The two algorithms are robust against noise and outliers and perform well under varying levels of distortion. They outperform several well-known and state-of-the-art methods for point set registration.

  20. The Effect of Single Versus Repeated Previous Strategy Use on Individuals' Subsequent Strategy Choice

    Directory of Open Access Journals (Sweden)

    Viki Schillemans

    2012-12-01

    Full Text Available Previous research has shown that participants' strategy choices can be influenced by the previously-used strategy. This'perseveration effect' has been demonstrated both after a repeated use of the previous strategy (e.g., Schillemans, Luwel, Bulté, Onghena, & Verschaffel, 2009, but also after a single use of the previous strategy (Lemaire & Lecacheur, 2010. In the present study, we tested whether this perseveration effect would be stronger after a repeated than after a single previous strategy application. We were able to replicate the perseveration effect but we did not find evidence for an influence of the number of previous strategy applications on the strength of this effect. An additional cluster analysis revealed that only about one third of the participants was susceptible for the perseveration effect. The theoretical, methodological, and educational implications of these results are discussed.

  1. Theoretical Physics Division progress report

    International Nuclear Information System (INIS)

    1989-01-01

    The research areas covered in this report are solid state and quantum physics, theoretical metallurgy, fuel modelling and reactor materials, statistical physics and the theory of fluids. Attention is drawn to a number of items: (i) the application of theories of aerosol behaviour to the interpretation of conditions in the cover-gas space of a fast reactor; (ii) studies in non-linear dynamics, dynamical instabilities and chaotic behaviour covering for example, fluid behaviour in Taylor-Couette experiments, non-linear behaviour in electronic circuits and reaction-diffusion systems; (iii) the development of finite element computational techniques to describe the periodic behaviour of a system after a Hopf bifurcation and in simulating solidification processes; (iv) safety assessment of disposal concepts for low- and intermediate-level radioactive wastes. (U.K.)

  2. Theoretical motions of hydrofoil systems

    Science.gov (United States)

    Imlay, Frederick H

    1948-01-01

    Results are presented of an investigation that has been undertaken to develop theoretical methods of treating the motions of hydrofoil systems and to determine some of the important parameters. Variations of parameters include three distributions of area between the hydrofoils, two rates of change of downwash angle with angle of attack, three depths of immersion, two dihedral angles, two rates of change of lift with immersion, three longitudinal hydrofoil spacings, two radii of gyration in pitching, and various horizontal and vertical locations of the center of gravity. Graphs are presented to show locations of the center of gravity for stable motion, values of the stability roots, and motions following the sudden application of a vertical force or a pitching moment to the hydrofoil system for numerous sets of values of the parameters.

  3. Development of a theory-informed implementation intervention to improve the triage, treatment and transfer of stroke patients in emergency departments using the Theoretical Domains Framework (TDF): the T3Trial.

    Science.gov (United States)

    Craig, Louise E; Taylor, Natalie; Grimley, Rohan; Cadilhac, Dominique A; McInnes, Elizabeth; Phillips, Rosemary; Dale, Simeon; O'Connor, Denise; Levi, Chris; Fitzgerald, Mark; Considine, Julie; Grimshaw, Jeremy M; Gerraty, Richard; Cheung, N Wah; Ward, Jeanette; Middleton, Sandy

    2017-07-17

    Theoretical frameworks and models based on behaviour change theories are increasingly used in the development of implementation interventions. Development of an implementation intervention is often based on the available evidence base and practical issues, i.e. feasibility and acceptability. The aim of this study was to describe the development of an implementation intervention for the T 3 Trial (Triage, Treatment and Transfer of patients with stroke in emergency departments (EDs)) using theory to recommend behaviour change techniques (BCTs) and drawing on the research evidence base and practical issues of feasibility and acceptability. A stepped method for developing complex interventions based on theory, evidence and practical issues was adapted using the following steps: (1) Who needs to do what, differently? (2) Using a theoretical framework, which barriers and enablers need to be addressed? (3) Which intervention components (behaviour change techniques and mode(s) of delivery) could overcome the modifiable barriers and enhance the enablers? A researcher panel was convened to review the list of BCTs recommended for use and to identify the most feasible and acceptable techniques to adopt. Seventy-six barriers were reported by hospital staff who attended the workshops (step 1: thirteen TDF domains likely to influence the implementation of the T 3 Trial clinical intervention were identified by the researchers; step 2: the researcher panellists then selected one third of the BCTs recommended for use as appropriate for the clinical context of the ED and, using the enabler workshop data, devised enabling strategies for each of the selected BCTs; and step 3: the final implementation intervention consisted of 27 BCTs). The TDF was successfully applied in all steps of developing an implementation intervention for the T 3 Trial clinical intervention. The use of researcher panel opinion was an essential part of the BCT selection process to incorporate both research

  4. Demystifying Theoretical Sampling in Grounded Theory Research

    Directory of Open Access Journals (Sweden)

    Jenna Breckenridge BSc(Hons,Ph.D.Candidate

    2009-06-01

    Full Text Available Theoretical sampling is a central tenet of classic grounded theory and is essential to the development and refinement of a theory that is ‘grounded’ in data. While many authors appear to share concurrent definitions of theoretical sampling, the ways in which the process is actually executed remain largely elusive and inconsistent. As such, employing and describing the theoretical sampling process can present a particular challenge to novice researchers embarking upon their first grounded theory study. This article has been written in response to the challenges faced by the first author whilst writing a grounded theory proposal. It is intended to clarify theoretical sampling for new grounded theory researchers, offering some insight into the practicalities of selecting and employing a theoretical sampling strategy. It demonstrates that the credibility of a theory cannot be dissociated from the process by which it has been generated and seeks to encourage and challenge researchers to approach theoretical sampling in a way that is apposite to the core principles of the classic grounded theory methodology.

  5. Theoretical Models of Neutrino Mixing Recent Developments

    CERN Document Server

    Altarelli, Guido

    2009-01-01

    The data on neutrino mixing are at present compatible with Tri-Bimaximal (TB) mixing. If one takes this indication seriously then the models that lead to TB mixing in first approximation are particularly interesting and A4 models are prominent in this list. However, the agreement of TB mixing with the data could still be an accident. We discuss a recent model based on S4 where Bimaximal mixing is instead valid at leading order and the large corrections needed to reproduce the data arise from the diagonalization of charged leptons. The value of $\\theta_{13}$ could distinguish between the two alternatives.

  6. POLYMATHIC LEADERSHIP: THEORETICAL FOUNDATION AND CONSTRUCT DEVELOPMENT

    OpenAIRE

    MICHAEL ESPINDOLA ARAKI

    2015-01-01

    O objetivo deste trabalho é lançar as bases teóricas para o desenvolvimento de um novo construto no campo de liderança chamado liderança polímata . Polímata pode se referir tanto a um substantivo (a pessoa polímata) como a um adjetivo (a liderança polímata). O termo tem origem no grego clássico e significa amplo conhecimento ou aprendizagem (OXFORD, 2015). A liderança polímata é aqui apresentada como um padrão de comportamentos de um líder que incentiva e inspira seguidores a avançar par...

  7. Theoretical Division progress report

    International Nuclear Information System (INIS)

    Cooper, N.G.

    1979-04-01

    This report presents highlights of activities in the Theoretical (T) Division from October 1976-January 1979. The report is divided into three parts. Part I presents an overview of the Division: its unique function at the Los Alamos Scientific Laboratory (LASL) and within the scientific community as a whole; the organization of personnel; the main areas of research; and a survey of recent T-Division initiatives. This overview is followed by a survey of the 13 groups within the Division, their main responsibilities, interests, and expertise, consulting activities, and recent scientific accomplisments. The remainder of the report, Parts II and III, is devoted to articles on selected research activities. Recent efforts on topics of immediate interest to energy and weapons programs at LASL and elsewhere are described in Part II, Major National Programs. Separate articles present T-Divison contributions to weapons research, reactor safety and reactor physics research, fusion research, laser isotope separation, and other energy research. Each article is a compilation of independent projects within T Division, all related to but addressing different aspects of the major program. Part III is organized by subject discipline, and describes recent scientific advances of fundamental interest. An introduction, defining the scope and general nature of T-Division efforts within a given discipline, is followed by articles on the research topics selected. The reporting is done by the scientists involved in the research, and an attempt is made to communicate to a general audience. Some data are given incidentally; more technical presentations of the research accomplished may be found among the 47 pages of references. 110 figures, 5 tables

  8. A Place for Theoretical Inconsistency

    Directory of Open Access Journals (Sweden)

    Janet Newbury PhD Candidate

    2011-12-01

    Full Text Available The current article articulates how the expectation of theoretical consistency can be constraining for qualitative researchers. The author considers the origins of the tradition of theoretical consistency, and suggests that postmodern research - particularly that which focuses on social justice - might in fact be served by considering possibilities that emerge from multiple theoretical perspectives. To illustrate the application and contribution of theoretical inconsistency, three concrete examples of how these ideas have been applied within qualitative studies are discussed. By pragmatically drawing connections across theoretical differences, it is hoped that researchers will engage critically with their own theoretical commitments and assumptions, thus opening themselves up to new possibilities and to new and creative ways of coming together.

  9. Theoretically Optimal Distributed Anomaly Detection

    Data.gov (United States)

    National Aeronautics and Space Administration — A novel general framework for distributed anomaly detection with theoretical performance guarantees is proposed. Our algorithmic approach combines existing anomaly...

  10. New study reveals twice as many asteroids as previously believed

    Science.gov (United States)

    2002-05-01

    The ISO satellite Credits: ESA ISO An artist's impression of the ISO spacecraft. The ISO Deep Asteroid Search indicates that there are between 1.1 million and 1.9 million 'space rocks' larger than 1 kilometre in diameter in the so-called 'main asteroid belt', about twice as many as previously believed. However, astronomers think it is premature to revise current assessments of the risk of the Earth being hit by an asteroid. Despite being in our own Solar System, asteroids can be more difficult to study than very distant galaxies. With sizes of up to one thousand kilometres in diameter, the brightness of these rocky objects may vary considerably in just a few minutes. They move very quickly with respect to the stars - they have been dubbed 'vermin of the sky' because they often appear as trails on long exposure images. This elusiveness explains why their actual number and size distribution remains uncertain. Most of the almost 40,000 asteroids catalogued so far (1) orbit the Sun forming the 'main asteroid belt', between Mars and Jupiter, too far to pose any threat to Earth. However, space-watchers do keep a closer eye on another category of asteroids, the 'Near Earth Asteroids' or 'NEAs', which are those whose orbits cross, or are likely to cross, that of our planet. The ISO Deep Asteroid Search (IDAS), the first systematic search for these objects performed in infrared light, focused on main belt asteroids. Because it is impossible to simply point the telescope at the whole main belt and count, astronomers choose selected regions of the belt and then use a theoretical model to extrapolate the data to the whole belt. Edward Tedesco (TerraSystems, Inc., New Hampshire, United States) and François-Xavier Desert (Observatoire de Grenoble, France) observed their main belt selected areas in 1996 and 1997 with ESA's ISO. They found that in the middle region of the belt the density of asteroids was 160 asteroids larger than 1 kilometre per square degree - an area of the

  11. A theoretical framework of organizational change

    NARCIS (Netherlands)

    Jacobs, G.; Polos, L.; van Witteloostuijn, A.; Christe-Zyse, J.

    2013-01-01

    Purpose – Organizational change is a risky endeavour. Most change initiatives fall short on their goals and produce high opportunity and process costs, which at times outweigh the content benefits of organizational change. This paper seeks to develop a framework, offering a theoretical toolbox to

  12. Theoretical analyses of superconductivity in iron based ...

    African Journals Online (AJOL)

    This paper focuses on the theoretical analysis of superconductivity in iron based superconductor Ba1−xKxFe2As2. After reviewing the current findings on this system, we suggest that phononexciton combined mechanism gives a right order of superconducting transition temperature (TC) for Ba1−xKxFe2As2 . By developing ...

  13. New Theoretical Approach Integrated Education and Technology

    Science.gov (United States)

    Ding, Gang

    2010-01-01

    The paper focuses on exploring new theoretical approach in education with development of online learning technology, from e-learning to u-learning and virtual reality technology, and points out possibilities such as constructing a new teaching ecological system, ubiquitous educational awareness with ubiquitous technology, and changing the…

  14. Ultrarelativistic heavy ion collisions Theoretical overview

    International Nuclear Information System (INIS)

    Blaizot, Jean-Paul

    2006-01-01

    This is a short review of some theoretical aspects of the physics of ultra-relativistic heavy ion collisions. I review the main properties of the QCD phase diagram and recent developments in the physics of high gluon densities in the hadronic wavefunctions at high energy. Then I comment salient results obtained at RHIC

  15. Surfactants, interfaces and pores : a theoretical study

    NARCIS (Netherlands)

    Huinink, H.

    1998-01-01

    The aim of this study was to investigate the behavior of surfactants in porous media by theoretical means. The influence of curvature of a surface on the adsorption has been studied with a mean field lattice (MFL) model, as developed by Scheutjens and Fleer. An analytical theory has been

  16. Theoretical Issues of the Constitutional Regulation Mechanism

    Science.gov (United States)

    Zhussupova, Guldaray B.; Zhailyaubayev, Rassul T.; Ukin, Symbat K.; Shunayeva, Sylu M.; Nurmagambetov, Rachit G.

    2016-01-01

    The purpose of this research is to define the concept of "constitutional regulation mechanism." The definition of the concept of "constitutional regulation mechanism" will give jurists and legislators a theoretical framework for developing legal sciences, such as the constitutional law and the theory of state and law. The…

  17. Understanding the Ensemble Pianist: A Theoretical Framework

    Science.gov (United States)

    Kokotsaki, Dimitra

    2007-01-01

    The aim of this study was to develop a theoretical model of the attainment of high quality in musical ensemble performance as perceived by the pianist and to identify the factors affecting this process. The research has followed an inductive interpretative approach, applying qualitative methods. The analytic material was collected through the…

  18. Cutaneous protothecosis in a patient with previously undiagnosed HIV infection.

    Science.gov (United States)

    Fong, Kenneth; Tee, Shang-Ian; Ho, Madeline S L; Pan, Jiun Yit

    2015-08-01

    Protothecosis is an uncommon condition resulting from infection by achlorophyllous algae of the Prototheca species. Immunocompromised individuals are generally most susceptible to protothecal infection and tend to develop severe and disseminated disease. However, the association between protothecosis and HIV-induced immunosuppression is not clear, with only a handful of cases having been described to date. Here we report a case of cutaneous protothecosis in a Chinese man with previously undiagnosed HIV infection that responded well to oral itraconazole. © 2014 The Australasian College of Dermatologists.

  19. Charm physics: theoretical review

    OpenAIRE

    Petrov, Alexey A.

    2003-01-01

    We review recent developments in charm physics, focusing on the physics of charmed mesons. We discuss charm spectroscopy, decay constants, as well as searches for new physics with charmed mesons. We discuss D0-anti-D0 mixing and CP-violation in charm decays. We also present the modified Nelson plot of charm mixing predictions.

  20. A Theoretical Framework for Ecological Interface Design

    DEFF Research Database (Denmark)

    Vicente, Kim J.; Rasmussen, Jens

    1988-01-01

    of the task require. The EID approach extends the concept of direct manipulation inter-faces by taking into account the added complications introduced by complex systems. In this paper, we describe the development of the framework, its theoretical foundations, and examples of its application to various work......A theoretical framework for designing interfaces for complex systems is de-scribed. The framework, called ecological interface design (EID), suggests a set of principles for designing interfaces in a way that supports the funda-mental properties of human cognition. The basis of EID is the skills...

  1. Theoretical basis of the new particles

    International Nuclear Information System (INIS)

    Rujula, A.

    1977-01-01

    The four-quark standard gauge field theory of weak, electromagnetic and strong interactions is reviewed and placed into a historical perspective since as early as 1961. Theoretical predictions of the model are compared to experimental observations available as of the Conference date, charm production in e + e - annihilation being in the spotlight. Virtues and shortcomings of the standard model are discussed. The model is concluded to have been an incredibly successful predictive tool. Some theoretical developments around the standard model are also discussed in view of CP violation in SU(2)xU(1) gauge theories, the Higgs' bosons and superunification of weak, strong and electromagnetic interactions

  2. Factors determining early internationalization of entrepreneurial SMEs: Theoretical approach

    Directory of Open Access Journals (Sweden)

    Agne Matiusinaite

    2015-12-01

    Full Text Available Purpose – This study extends the scientific discussion of early internationalization of SMEs. The main purpose of this paper – to develop a theoretical framework to investigate factors determining early internationalization of international new ventures. Design/methodology/approach – The conceptual framework is built on the analysis and synthesis of scientific literature. Findings – This paper presents different factors, which determine early internationalization of international new ventures. These factors are divided to entrepreneurial, organizational and contextual factors. We argue that early internationalization of international new ventures is defined by entrepreneurial characteristics and previous experience of the entrepreneur, opportunities recognition and exploitation, risk tolerance, specific of the organization, involvement into networks and contextual factors. Study proved that only interaction between factors and categories has an effect for business development and successful implementation of early internationalization. Research limitations/implications – The research was conducted on the theoretical basis of scientific literature. The future studies could include a practical confirmation or denial of such allocation of factors. Originality/value – The originality of this study lies in the finding that factor itself has limited effect to early internationalization. Only the interoperability of categories and factors gives a positive impact on early internationalization of entrepreneurial SMEs.

  3. THEORETICAL ASPECTS OF SCHOOL TEXTBOOK

    Directory of Open Access Journals (Sweden)

    Sveriene, Audrone

    2006-12-01

    Full Text Available School textbook is an important part of general education. Some theoretical works were written on school textbook theory. The question about textbook concept, structure and functions wasunder the dispute a long time in Lithuania and abroad.The main purpose of this article is to analyse and summarize the experience of researchers school textbook theory from Lithuania and foreign countries. The tasks of article are to determineconcept of textbook, describe the structure and the functions of the textbook. Famous scientists in this field are D. Zujev (Russia, P. Weinbrenner, F. Pingel (Germany, J. Mikk (Estonia, E. B. Johnsen (Norway, A. Choppin (France, F. M. Gerard and X. Roegiers Belgium, R. Bamberger (Austria. There are many interpretations of textbook concept, and different suggestions what is a textbook. In Lithuania the textbook concept was discussed with some specialists of Educational Development Centre and the Ministry of Education and Science. The Requirements on textbook development were approved in Lithuania only in 2003. According to the research litterature, the main aspect of the textbook is to meet the requirements of curriculum. The textbook consists of text, paratext and illustrations. All these parts of the textbook play many functions in education. The main function of the textbook is to motivate students. Other important functions of the textbook are: information, systematisation, coordination, differentiation, guidance education, learning strategy, value education, aesthetical.

  4. Theoretical particle physics

    International Nuclear Information System (INIS)

    Gottlieb, S.A.

    1990-05-01

    My research in lattice gauge theory during the past year is described. Several projects were completed dealing with QCD simulations including dynamical fermions. Under the DOE Grand Challenge program, a large scale calculation of the QCD spectrum with two light flavors of dynamical staggered quarks was carried out. This calculation is one of the most significant efforts to data to take into account the effects of dynamical fermions. Smaller lattice spacing and lighter quark masses were used than in previous attempts. QCD thermodynamics was studied on the ST-100 array processor and on an ETA supercomputer at the John von Neumann Supercomputer Center. On the ST-100, a study with two flavors of dynamical staggered quarks with am q = 0.025 and 0.0125 was carried out on a 12 3 x 8 lattice. These results give a rough estimate of the crossover couplings where we see the restoration of chiral symmetry. A study of QCD with dynamical Wilson fermions was carried out with N t = 4 to try to bring the study of QCD with dynamical Wilson fermions to the level that has been attained with staggered fermions over the past two years. We have calculated screening lengths to elucidate the properties of the high temperature phase. In the pure gluon theory, claims that the finite temperature deconfinement transition is second order, rather than first order, were investigated using a finite size scaling analysis. Our results support a first order transition. Finally, work was done to port computer code to new environments involving parallelism in order to pursue more ambitious calculations on more powerful hardware than the ST-100 and ETA10 used for the calculations reported here

  5. The power of theoretical knowledge.

    Science.gov (United States)

    Alligood, Martha Raile

    2011-10-01

    Nursing theoretical knowledge has demonstrated powerful contributions to education, research, administration and professional practice for guiding nursing thought and action. That knowledge has shifted the primary focus of the nurse from nursing functions to the person. Theoretical views of the person raise new questions, create new approaches and instruments for nursing research, and expand nursing scholarship throughout the world.

  6. Towards A Theoretical Biology: Reminiscences

    Indian Academy of Sciences (India)

    In 1967 I had decided to broaden my activities beyond the theoretical physics I had been engaged in since the start of my career at the University of Chicago. Theoretical biology was among the possibilities I was considering, though I then had no deep understanding of what it was and what it might become. Jack Cowan, a ...

  7. Theoretical molecular biophysics

    CERN Document Server

    Scherer, Philipp O J

    2017-01-01

    This book gives an introduction to molecular biophysics. It starts from material properties at equilibrium related to polymers, dielectrics and membranes. Electronic spectra are developed for the understanding of elementary dynamic processes in photosynthesis including proton transfer and dynamics of molecular motors. Since the molecular structures of functional groups of bio-systems were resolved, it has become feasible to develop a theory based on the quantum theory and statistical physics with emphasis on the specifics of the high complexity of bio-systems. This introduction to molecular aspects of the field focuses on solvable models. Elementary biological processes provide as special challenge the presence of partial disorder in the structure which does not destroy the basic reproducibility of the processes. Apparently the elementary molecular processes are organized in a way to optimize the efficiency. Learning from nature by means exploring the relation between structure and function may even help to b...

  8. THEORETICAL PRESSUPOSITIONS OF EDUCATION: SOME HISTORICAL REFLECTIONS

    Directory of Open Access Journals (Sweden)

    Rodrigo Regert

    2017-09-01

    Full Text Available Education has always been a much discussed theme and continues to be so. Based on this idea, the goal of this article is to discuss the theoretical pressupositions of education, beginning with the idea itself of human intellectual development and passing through the Ancient, Medieval, Modern and Contemporary Ages. It is important to point out that the article does not have the intention of covering the whole of this theme, nor even all of the theoretical pressupositions, which would be impossible. But it intends to begin or at least continue this discussion. For this the research made use of the descriptive method and its technical procedures took place in a bibliographic way. We conclude that it is important to discuss the theoretical pressupositions of education in history since, without this, it is not even possible to understand current education.

  9. Resistance and Renewal in Theoretical Psychology

    DEFF Research Database (Denmark)

    individuals and groups as resisting broader disciplinary and societal forces; this occurs not only by highlighting tacit assumptions, but also by developing theory-led projects to change the conditions in which our work and lives are constructed, regulated and renewed. These two features of theoretical...... psychology, resistance and renewal, form the overall theme for a selection of theoretical papers that is framed — in this iteration of the International Society for Theoretical Psychology's (ISTP) proceedings — by reflections on the 30 year history of the ISTP as well as by considerations of the future...... care in refugee family life, resilience thinking in disaster research and practices, resisting quality management in higher education, the relationality and reflexivity of resistance and renewal, research on psychological science from its borders, rethinking possible selves research, imagination...

  10. A Set Theoretical Approach to Maturity Models

    DEFF Research Database (Denmark)

    Lasrado, Lester; Vatrapu, Ravi; Andersen, Kim Normann

    2016-01-01

    of it application on a social media maturity data-set. Specifically, we employ Necessary Condition Analysis (NCA) to identify maturity stage boundaries as necessary conditions and Qualitative Comparative Analysis (QCA) to arrive at multiple configurations that can be equally effective in progressing to higher......Maturity Model research in IS has been criticized for the lack of theoretical grounding, methodological rigor, empirical validations, and ignorance of multiple and non-linear paths to maturity. To address these criticisms, this paper proposes a novel set-theoretical approach to maturity models...... characterized by equifinality, multiple conjunctural causation, and case diversity. We prescribe methodological guidelines consisting of a six-step procedure to systematically apply set theoretic methods to conceptualize, develop, and empirically derive maturity models and provide a demonstration...

  11. Modeling scientific: some theoretical and methodological considerations

    Directory of Open Access Journals (Sweden)

    Carlos Tamayo-Roca

    2017-04-01

    Full Text Available At present widespread use of models as an auxiliary system to penetrate the essence of phenomena related to all areas of cognitive and transforming activity of man, covering as diverse as human sciences fields. In the field of education use it is becoming more common as essential to transform school practice and enrich their theoretical instrument bitter day. The paper deals with the development of theoretical modeling as a scientific method to advance the process to be transformed and characterized by establishing relationships and links between the structural components that comprise it. In this regard it is proposed as an objective socialize some theoretical and methodological considerations that favor the use of modeling method in the scientific research activity of teachers.

  12. A Comparative Study of Theoretical Graph Models for Characterizing Structural Networks of Human Brain

    Directory of Open Access Journals (Sweden)

    Xiaojin Li

    2013-01-01

    Full Text Available Previous studies have investigated both structural and functional brain networks via graph-theoretical methods. However, there is an important issue that has not been adequately discussed before: what is the optimal theoretical graph model for describing the structural networks of human brain? In this paper, we perform a comparative study to address this problem. Firstly, large-scale cortical regions of interest (ROIs are localized by recently developed and validated brain reference system named Dense Individualized Common Connectivity-based Cortical Landmarks (DICCCOL to address the limitations in the identification of the brain network ROIs in previous studies. Then, we construct structural brain networks based on diffusion tensor imaging (DTI data. Afterwards, the global and local graph properties of the constructed structural brain networks are measured using the state-of-the-art graph analysis algorithms and tools and are further compared with seven popular theoretical graph models. In addition, we compare the topological properties between two graph models, namely, stickiness-index-based model (STICKY and scale-free gene duplication model (SF-GD, that have higher similarity with the real structural brain networks in terms of global and local graph properties. Our experimental results suggest that among the seven theoretical graph models compared in this study, STICKY and SF-GD models have better performances in characterizing the structural human brain network.

  13. Neutrino Mixing: Theoretical Overview

    CERN Document Server

    Altarelli, Guido

    2013-01-01

    We present a concise review of the recent important experimental developments on neutrino mixing (hints for sterile neutrinos, large $\\theta_{13}$, possible non maximal $\\theta_{23}$, approaching sensitivity on $\\delta_{CP}$) and their implications on models of neutrino mixing. The new data disfavour many models but the surviving ones still span a wide range going from Anarchy (no structure, no symmetry in the lepton sector) to a maximum of symmetry, as for the models based on discrete non-abelian flavour groups that can be improved following the indications from the data.

  14. Unorthodox theoretical methods

    Energy Technology Data Exchange (ETDEWEB)

    Nedd, Sean [Iowa State Univ., Ames, IA (United States)

    2012-01-01

    The use of the ReaxFF force field to correlate with NMR mobilities of amine catalytic substituents on a mesoporous silica nanosphere surface is considered. The interfacing of the ReaxFF force field within the Surface Integrated Molecular Orbital/Molecular Mechanics (SIMOMM) method, in order to replicate earlier SIMOMM published data and to compare with the ReaxFF data, is discussed. The development of a new correlation consistent Composite Approach (ccCA) is presented, which incorporates the completely renormalized coupled cluster method with singles, doubles and non-iterative triples corrections towards the determination of heats of formations and reaction pathways which contain biradical species.

  15. Optimal Information-Theoretic Wireless Location Verification

    OpenAIRE

    Yan, Shihao; Malaney, Robert; Nevat, Ido; Peters, Gareth W.

    2012-01-01

    We develop a new Location Verification System (LVS) focussed on network-based Intelligent Transport Systems and vehicular ad hoc networks. The algorithm we develop is based on an information-theoretic framework which uses the received signal strength (RSS) from a network of base-stations and the claimed position. Based on this information we derive the optimal decision regarding the verification of the user's location. Our algorithm is optimal in the sense of maximizing the mutual information...

  16. Charm physics: theoretical review

    International Nuclear Information System (INIS)

    Petrov, Alexey A.

    2003-01-01

    Charm physics plays a unique dual role in the modern investigation of flavor physics. Charm decay and production experiments provide valuable checks and supporting measurements for studies of CP-violation in measurements of CKM parameters in b-physics, as well as outstanding opportunities for searches for new physics. Historically, many methods of heavy quark physics have been first tested in charmed hadrons. The fact that a b-quark mainly decays into a charm quark makes charm physics an integral part of any b-physics program. In many cases direct measurements of charm decay parameters directly affect the studies of fundamental physics in B decays. This year brought several interesting developments in some seemingly well-understood sectors of charm physics, such as meson spectroscopy. We review recent developments in charm physics, focusing on the physics of charmed mesons. We discuss charm spectroscopy, decay constants and transition form factors, as well as searches for new physics with charmed mesons. We discuss D 0 D 0 -bar mixing and CP-violation in charm decays. (author)

  17. Theoretical physics 7 quantum mechanics : methods and applications

    CERN Document Server

    Nolting, Wolfgang

    2017-01-01

    This textbook offers a clear and comprehensive introduction to methods and applications in quantum mechanics, one of the core components of undergraduate physics courses. It follows on naturally from the previous volumes in this series, thus developing the understanding of quantized states further on. The first part of the book introduces the quantum theory of angular momentum and approximation methods. More complex themes are covered in the second part of the book, which describes multiple particle systems and scattering theory. Ideally suited to undergraduate students with some grounding in the basics of quantum mechanics, the book is enhanced throughout with learning features such as boxed inserts and chapter summaries, with key mathematical derivations highlighted to aid understanding. The text is supported by numerous worked examples and end of chapter problem sets.  About the Theoretical Physics series Translated from the renowned and highly successful German editions, the eight volumes of this seri...

  18. Laser induced fusion - theoretical aspects

    International Nuclear Information System (INIS)

    Lawande, S.V.; Gunye, M.R.

    1979-01-01

    The theoretical aspects of thermonuclear fusion induced by laser are discussed. After outlining the basic features and the energetics of laser fusion in the chapter 1, various non-linear mechanisms responsible for an enhanced absorption of laser energy into the plasma and the stimulated scattering processes which hinder the absorption are discussed in the second chapter on laser plasma interactions. The third chapter on gas dynamics and the shock phenomena presents the mathematical formulation of the compression to high densities of the core of the pellet for its implosion. A hydrodynamic model developed to stimulate the evolution of laser heated symmetric plasma is outlined in the chapter four on numerichigly relativistic noninteracting particles, regular bouncing states may occur at high densities, or at high temperatures. The latter case is considered in details for the collapse phase of a hot universe; lepton pair creation may completely decelerate the collapse of a hot hadronic plasma, provided the observational parameters, the Hubble constant Hsub(deg), the matter parameter Ωsub(deg) and the deceleration parameter qsub(deg) satisfy certain constraint conditions

  19. Climate Change: a Theoretical Review

    Directory of Open Access Journals (Sweden)

    Muhammad Ishaq-ur Rahman

    2013-01-01

    Full Text Available Climate Change has been undoubtedly the most illustrious environmental issue since late 20th century. But neither the discourse merely emerged during that time, nor it was problematized in the same way since its onset. History of Climate Change discourse reveals that from a purely scientific concern it has turned into a public agenda that is nowadays more inclined to be development problem. Transformations have brought about a complete new paradigm every time. This article presents a theoretical analysis of the Climate Change discourse and to do so it captured the underlying philosophy of the issue using Thomas Kuhn’s well-known thesis of ‘paradigm shift’. In particular it discusses about the crisis that lead the issue towards transformations; explores key perspectives around the crisis thus representation of the issue in the environmental discourse over the time. While this paper establishes that with the beginning of the 21st century, the discourse entered into a new paradigm and will reach to a critical point by the end of 2012, it finally postulates some measures that the discourse might integrate with the existing to advance beyond that point.

  20. HOLIDAY: THEORETICAL ASPECTS

    Directory of Open Access Journals (Sweden)

    Cheban Yuliia

    2018-01-01

    holidays average wages; vacation pay In Ukraine, such types of vacations are regulated by law as annually; additional leave in connection with studying; creative holiday; social holidays; vacations without salary savings. The proposed classification will allow more detailed organization, documenting, accounting and control of accrual, use, payment of holidays. Holidays should be provided and paid on the basis of our principles: legality, normative regulation, documentary registration, payment. Given the significant development of social responsibility of enterprises in recent years, holidays are one of the motivating factors for hired workers, which has a direct impact on the activities of any enterprise. It is expedient to take into account such a possibility when developing the social policy of the enterprise and enshrining it in the Collective agreement.

  1. Theoretical physics. Field theory

    International Nuclear Information System (INIS)

    Landau, L.; Lifchitz, E.

    2004-01-01

    This book is the fifth French edition of the famous course written by Landau/Lifchitz and devoted to both the theory of electromagnetic fields and the gravity theory. The talk of the theory of electromagnetic fields is based on special relativity and relates to only the electrodynamics in vacuum and that of pointwise electric charges. On the basis of the fundamental notions of the principle of relativity and of relativistic mechanics, and by using variational principles, the authors develop the fundamental equations of the electromagnetic field, the wave equation and the processes of emission and propagation of light. The theory of gravitational fields, i.e. the general theory of relativity, is exposed in the last five chapters. The fundamentals of the tensor calculus and all that is related to it are progressively introduced just when needed (electromagnetic field tensor, energy-impulse tensor, or curve tensor...). The worldwide reputation of this book is generally allotted to clearness, to the simplicity and the rigorous logic of the demonstrations. (A.C.)

  2. 22nd International Congress of Theoretical and Applied Mechanics

    CERN Document Server

    Finn, Matthew

    2013-01-01

    The 22nd International Congress of Theoretical and Applied Mechanics (ICTAM) of the International Union of Theoretical and Applied Mechanics was hosted by the Australasian mechanics community in the city of Adelaide during the last week of August 2008. Over 1200 delegates met to discuss the latest development in the fields of theoretical and applied mechanics. This volume records the events of the congress and contains selected papers from the sectional lectures and invited lectures presented at the congresses six mini-symposia.

  3. Marco Antonio Chaer Nascimento a festschrift from theoretical chemistry accounts

    CERN Document Server

    Ornellas, Fernando R

    2014-01-01

    In this Festschrift dedicated to the 65th birthday of Marco Antonio Chaer Nascimento, selected researchers in theoretical chemistry present research highlights on major developments in the field. Originally published in the journal Theoretical Chemistry Accounts, these outstanding contributions are now available in a hardcover print format. This volume will be of benefit in particular to those research groups and libraries that have chosen to have only electronic access to the journal. It also provides valuable content for all researchers in theoretical chemistry.

  4. Computability, complexity, and languages fundamentals of theoretical computer science

    CERN Document Server

    Davis, Martin D; Rheinboldt, Werner

    1983-01-01

    Computability, Complexity, and Languages: Fundamentals of Theoretical Computer Science provides an introduction to the various aspects of theoretical computer science. Theoretical computer science is the mathematical study of models of computation. This text is composed of five parts encompassing 17 chapters, and begins with an introduction to the use of proofs in mathematics and the development of computability theory in the context of an extremely simple abstract programming language. The succeeding parts demonstrate the performance of abstract programming language using a macro expa

  5. Gregory S. Ezra a festschrift from theoretical chemistry accounts

    CERN Document Server

    Keshavamurthy, Srihari

    2015-01-01

    In this Festschrift dedicated to the 60th birthday of Gregory S. Ezra, selected researchers in theoretical chemistry present research highlights on major developments in the field. Originally published in the journal Theoretical Chemistry Accounts, these outstanding contributions are now available in a hardcover print format, as well as a special electronic edition. This volume provides valuable content for all researchers in theoretical chemistry and will especially benefit those research groups and libraries with limited access to the journal.

  6. Modelling in Accounting. Theoretical and Practical Dimensions

    Directory of Open Access Journals (Sweden)

    Teresa Szot -Gabryś

    2010-10-01

    Full Text Available Accounting in the theoretical approach is a scientific discipline based on specific paradigms. In the practical aspect, accounting manifests itself through the introduction of a system for measurement of economic quantities which operates in a particular business entity. A characteristic of accounting is its flexibility and ability of adaptation to information needs of information recipients. One of the main currents in the development of accounting theory and practice is to cover by economic measurements areas which have not been hitherto covered by any accounting system (it applies, for example, to small businesses, agricultural farms, human capital, which requires the development of an appropriate theoretical and practical model. The article illustrates the issue of modelling in accounting based on the example of an accounting model developed for small businesses, i.e. economic entities which are not obliged by law to keep accounting records.

  7. Theoretical Foundations of Learning Communities

    Science.gov (United States)

    Jessup-Anger, Jody E.

    2015-01-01

    This chapter describes the historical and contemporary theoretical underpinnings of learning communities and argues that there is a need for more complex models in conceptualizing and assessing their effectiveness.

  8. A Diagnostic Marker to Discriminate Childhood Apraxia of Speech from Speech Delay: III. Theoretical Coherence of the Pause Marker with Speech Processing Deficits in Childhood Apraxia of Speech

    Science.gov (United States)

    Shriberg, Lawrence D.; Strand, Edythe A.; Fourakis, Marios; Jakielski, Kathy J.; Hall, Sheryl D.; Karlsson, Heather B.; Mabie, Heather L.; McSweeny, Jane L.; Tilkens, Christie M.; Wilson, David L.

    2017-01-01

    Purpose: Previous articles in this supplement described rationale for and development of the pause marker (PM), a diagnostic marker of childhood apraxia of speech (CAS), and studies supporting its validity and reliability. The present article assesses the theoretical coherence of the PM with speech processing deficits in CAS. Method: PM and other…

  9. Theoretical aspectsof labour evaluation effectiveness

    OpenAIRE

    Ivanov, M.

    2014-01-01

    The article deals with determination of the benchmark for building a system of payment and financial incentives in the agricultural sector. The author theoretically justifies the need for such a measure as a category of “labor efficiency” and gives a theoretical rationale for the use of this category. A method for calculating performance indicators of labor using the coefficients of the quality of work is offered in this article.

  10. Optimal information transfer in enzymatic networks: A field theoretic formulation

    Science.gov (United States)

    Samanta, Himadri S.; Hinczewski, Michael; Thirumalai, D.

    2017-07-01

    Signaling in enzymatic networks is typically triggered by environmental fluctuations, resulting in a series of stochastic chemical reactions, leading to corruption of the signal by noise. For example, information flow is initiated by binding of extracellular ligands to receptors, which is transmitted through a cascade involving kinase-phosphatase stochastic chemical reactions. For a class of such networks, we develop a general field-theoretic approach to calculate the error in signal transmission as a function of an appropriate control variable. Application of the theory to a simple push-pull network, a module in the kinase-phosphatase cascade, recovers the exact results for error in signal transmission previously obtained using umbral calculus [Hinczewski and Thirumalai, Phys. Rev. X 4, 041017 (2014), 10.1103/PhysRevX.4.041017]. We illustrate the generality of the theory by studying the minimal errors in noise reduction in a reaction cascade with two connected push-pull modules. Such a cascade behaves as an effective three-species network with a pseudointermediate. In this case, optimal information transfer, resulting in the smallest square of the error between the input and output, occurs with a time delay, which is given by the inverse of the decay rate of the pseudointermediate. Surprisingly, in these examples the minimum error computed using simulations that take nonlinearities and discrete nature of molecules into account coincides with the predictions of a linear theory. In contrast, there are substantial deviations between simulations and predictions of the linear theory in error in signal propagation in an enzymatic push-pull network for a certain range of parameters. Inclusion of second-order perturbative corrections shows that differences between simulations and theoretical predictions are minimized. Our study establishes that a field theoretic formulation of stochastic biological signaling offers a systematic way to understand error propagation in

  11. Theoretical Insights on Contraction-Type Iterative Learning Control for Biorobotic Systems with Preisach Hysteresis

    Directory of Open Access Journals (Sweden)

    Tianjiang Hu

    2016-06-01

    Full Text Available This article offers new insights on the learning control approach developed by [Hu et al. IEEE/ASME Trans. Mechatronics, 19(1: 191–200, 2014]. Theoretical insights are further proposed to unveil why the contraction-type iterative learning control (ILC schemes are suitable and effective in compensating for hysteresis, widely existing in biorobotic locomotion. Under such circumstances, iteration-based second-order dynamics is adopted to describe the biorobotic systems acted upon by one unknown Preisach hysteresis term. The memory clearing operator is mathematically proven to enable feasibility of contraction-type ILC methods, regardless of whether the initial state is accurately set or not. The simulation examples confirm that the developed iteration-based controller combined with a preceded operator effectively reduce tracking errors caused by the hysteresis nonlinearity. Furthermore, the new insights on theoretical feasibility are definitively corroborated in accordance with the previously published experimental results.

  12. High-Grade Leiomyosarcoma Arising in a Previously Replanted Limb

    Directory of Open Access Journals (Sweden)

    Tiffany J. Pan

    2015-01-01

    Full Text Available Sarcoma development has been associated with genetics, irradiation, viral infections, and immunodeficiency. Reports of sarcomas arising in the setting of prior trauma, as in burn scars or fracture sites, are rare. We report a case of a leiomyosarcoma arising in an arm that had previously been replanted at the level of the elbow joint following traumatic amputation when the patient was eight years old. He presented twenty-four years later with a 10.8 cm mass in the replanted arm located on the volar forearm. The tumor was completely resected and pathology examination showed a high-grade, subfascial spindle cell sarcoma diagnosed as a grade 3 leiomyosarcoma with stage pT2bNxMx. The patient underwent treatment with brachytherapy, reconstruction with a free flap, and subsequently chemotherapy. To the best of our knowledge, this is the first case report of leiomyosarcoma developing in a replanted extremity. Development of leiomyosarcoma in this case could be related to revascularization, scar formation, or chronic injury after replantation. The patient remains healthy without signs of recurrence at three-year follow-up.

  13. Identity crisis: A theoretical analysis of ‘team identification’ research.

    OpenAIRE

    Lock, Daniel; Heere, B.

    2017-01-01

    Research question: Existing team identification research uses various definitions, conceptualisations, and theoretical frameworks. In this paper, we provide a theoretical analysis of previous research using the two dominant theoretical approaches: identity theory and the social identity approach.\\ud Our primary purpose is to provide a theoretical framework for the on-going study of ‘team’ identification in sport management research.\\ud Findings: Scholars have used identity theory (role) and t...

  14. New Theoretical Approaches for Human-Computer Interaction.

    Science.gov (United States)

    Rogers, Yvonne

    2004-01-01

    Presents a critique of recent theoretical developments in the field of human-computer interaction (HCI) together with an overview of HCI practice. This chapter discusses why theoretically based approaches have had little impact on the practice of interaction design and suggests mechanisms to enable designers and researchers to better articulate…

  15. Formal-Language-Theoretic Control & Coordination of Mobile Robots

    National Research Council Canada - National Science Library

    Ray, Asok

    2007-01-01

    ... of formal-language-theoretic models instead of ad-hoc rule-based expert systems. Future Plans: 1) Formulation of operational intelligence models in a formal-language-theoretic setting. 2) Algorithm development for intelligent coordination of autonomous agent teams to accomplish complex mission tasks.

  16. An Introduction to the Theoretical Aspects of Coloured Petri nets

    DEFF Research Database (Denmark)

    Jensen, Kurt

    1994-01-01

    This paper presents the basic theoretical aspects of Coloured Petri Nets (CP-nets or CPN). CP-nets have been developed, from being a promising theoretical model, to being a full-fledged language for the design, specification, simulation, validation and implementation of large software systems (and...

  17. Consideraciones teóricas para el estudio de la dimensión institucional del desarrollo de la ciencia en Cuba Theoretical considerations for studying institutional dimension of science development in Cuba

    Directory of Open Access Journals (Sweden)

    Yadira Falcón Almeida

    2008-08-01

    Full Text Available El presente artículo tiene como objetivo fundamentar un marco teórico que permita estudiar el proceso de institucionalización de la ciencia en Cuba. Al enfocar la ciencia como actividad, su dinámica e integración dentro del sistema de las actividades sociales; se le debe prestar especial atención al proceso de institucionalización. Se justifica el abordaje de los procesos de institucionalización de la ciencia cubana como procesos específicos condicionados por lo económico, lo político y lo cultural. El trabajo consta de los siguientes momentos: primero se trata de develar el papel que juega la política científico- tecnológica en el desarrollo del proceso institucional; segundo, se caracteriza el lugar de la gestión de la actividad científica, y por último, se utiliza el enfoque de la red de actores para desentrañar los nexos y relaciones que se producen en el proceso de institucionalización.This paper is aimed at supporting a theoretical framework to study the institutionalization process of science in Cuba. When focusing on science as an activity, on its dynamics and integration within social activities, a special attention must be given to institutionalization. Dealing with the institutionalization process of Cuban science is conditioned by specifically economical, political and cultural factors. This paper firstly exposes the role of the scientific technological policy in the development of the institutionalization process. Later on, the place of scientific activity management is characterized. Finally, the approach of those involved is used to clear up the links and relations produced along the institutionalization process.

  18. 22 CFR 40.91 - Certain aliens previously removed.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Certain aliens previously removed. 40.91... IMMIGRANTS UNDER THE IMMIGRATION AND NATIONALITY ACT, AS AMENDED Aliens Previously Removed § 40.91 Certain aliens previously removed. (a) 5-year bar. An alien who has been found inadmissible, whether as a result...

  19. Theoretical Calculations of Atomic Data for Spectroscopy

    Science.gov (United States)

    Bautista, Manuel A.

    2000-01-01

    Several different approximations and techniques have been developed for the calculation of atomic structure, ionization, and excitation of atoms and ions. These techniques have been used to compute large amounts of spectroscopic data of various levels of accuracy. This paper presents a review of these theoretical methods to help non-experts in atomic physics to better understand the qualities and limitations of various data sources and assess how reliable are spectral models based on those data.

  20. Modelling in Accounting. Theoretical and Practical Dimensions

    OpenAIRE

    Teresa Szot -Gabryś

    2010-01-01

    Accounting in the theoretical approach is a scientific discipline based on specific paradigms. In the practical aspect, accounting manifests itself through the introduction of a system for measurement of economic quantities which operates in a particular business entity. A characteristic of accounting is its flexibility and ability of adaptation to information needs of information recipients. One of the main currents in the development of accounting theory and practice is to cover by economic...

  1. Observational and theoretical investigations in solar seismology

    Science.gov (United States)

    Noyes, Robert W.

    1992-01-01

    This is the final report on a project to develop a theoretical basis for interpreting solar oscillation data in terms of the interior dynamics and structure of the Sun. The topics covered include the following: (1) studies of the helioseismic signatures of differential rotation and convection in the solar interior; (2) wave generation by turbulent convection; and (3) the study of antipodal sunspot imaging of an active region tomography.

  2. Department of Theoretical Physics - Overview

    International Nuclear Information System (INIS)

    Kwiecinski, J.

    2001-01-01

    Full text: Research activity of the Department of Theoretical Physics concerns theoretical high-energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and relativistic heavy-ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research yet more formal problems are also considered. A detailed summary of the research projects and of the results obtained in various field is given in the abstracts. Our Department actively collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular, members of our Department participate in the EC network, which stimulates the mobility of researchers. Several members of our Department also participated in the research projects funded by the Polish Committee for Scientific Research (KBN). Besides pure research, members of our Department are also involved in graduate and up graduate teaching activity at our Institute as well as at other academic institution in Cracow. At present nine students are working on their Ph.D. degrees under the supervision of senior members of the Department. (author)

  3. Department of Theoretical Physics - Overview

    International Nuclear Information System (INIS)

    Kwiecinski, J.

    2002-01-01

    Full text: Research activity of the Department of Theoretical Physics concerns theoretical high energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and of relativistic heavy ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research yet the more formal problems are also considered. The detailed summary of the research projects and of the results obtained in various fields is given in the abstracts. Our Department successfully collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular, members of our Department participate in the EC network which allows for the mobility of researchers. Several members of our Department have also participated in the research projects funded by the State Committee for Scientific Research. Besides pure research, members of our Department are also involved in graduate and undergraduate teaching activity both at our Institute and at other academic institutions in Cracow. At present, eight students are working towards their Ph.D. degrees under the supervision of senior members of the Department. (author)

  4. Department of Theoretical Physics - Overview

    International Nuclear Information System (INIS)

    Kwiecinski, J.

    2000-01-01

    Full text: Research activity of the Department of Theoretical Physics concerns theoretical high-energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and of relativistic heavy-ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research, yet the more formal problems are also considered. The detailed summary of the research projects and of the results obtained in various fields is given in the abstracts. Our Department actively collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular members of our Department participate in the EC network which allows mobility of researchers. Several members of our Department have also participated in the research projects funded by the Polish Committee for Scientific Research (KBN). The complete list of grants is listed separately. Besides pure research, members of our Department are also involved in graduate and undergraduate teaching activity both at our Institute as well as at other academic institutions in Cracow. At present five students are working for their Ph.D. or MSc degrees under supervision of the senior members from the Department. We continue our participation at the EC SOCRATES-ERASMUS educational programme which allows exchange of graduate students between our Department and the Department of Physics of the University of Durham in the UK. (author)

  5. Determining root correspondence between previously and newly detected objects

    Science.gov (United States)

    Paglieroni, David W.; Beer, N Reginald

    2014-06-17

    A system that applies attribute and topology based change detection to networks of objects that were detected on previous scans of a structure, roadway, or area of interest. The attributes capture properties or characteristics of the previously detected objects, such as location, time of detection, size, elongation, orientation, etc. The topology of the network of previously detected objects is maintained in a constellation database that stores attributes of previously detected objects and implicitly captures the geometrical structure of the network. A change detection system detects change by comparing the attributes and topology of new objects detected on the latest scan to the constellation database of previously detected objects.

  6. Entrepreneurship and regional development

    DEFF Research Database (Denmark)

    Müller, Sabine

    This literature review examines how entrepreneurship and regional development has been previously addressed theoretically and empirically. Regional Science and Entrepreneurship are two fields with their own distinct literature's. The question is therefore, how do these two fields talk about...... the respective other? What are the commonalities and differences? The purpose of this article is to create an analytical synthesis by combining the insights of the two literature's in order to gain a fuller understanding of the relation between entrepreneurship and regional development....

  7. Numerical and theoretical investigations of resistive drift wave turbulence

    International Nuclear Information System (INIS)

    Sunn Pedersen, T.

    1995-07-01

    With regard to the development of thermonuclear fusion utilizing a plasma confined in a magnetic field, anomalous transport is a major problem and is considered to be caused by electrostatic drift wave turbulence. A simplified quasi-two-dimensional slab model of resistive drift wave turbulence is investigated numerically and theoretically. The model (Hasegawa and Wakatani), consists of two nonlinear partial differential equations for the density perturbation n and the electrostatic potential perturbation φ. It includes the effect of a background density gradient perpendicular to the magnetic field and a generalized Ohm's law for the electrons in the direction parallel to the magnetic field. It may be used to model the basic features of electrostatic turbulence and the associated transport in an edge plasma. Model equations are derived and some important properties of the system are discussed. It is described how the Fourier spectral method is applied to the Hasegawa-Wakatani equations, how the time integration is developed to ensure accurate and fast simulations in a large parameter regime, and how the accuracy of the code is checked. Numerical diagnostics are developed to verify and extend the results in publications concerning quasi-stationary turbulent states and to give an overview of the properties of the quasi-stationary turbulent state. The use of analysis tools, not previously applied to the Hasegawa-Wakatani system, and the results obtained are described. Fluid particles are tracked to obtain Lagrangian statistics for the turbulence. A new theoretical analysis of relative dispersion leads to a decomposition criterion for the particles. The significance of this is investigated numerically and characteristic time scales for particles are determined for a range of parameter values. It is indicated that the turbulent state can be characterized in the context of nonlinear dynamics and chaos theory as an attractor with a large basin of attraction. The basic

  8. Theoretical behaviorism meets embodied cognition : Two theoretical analyses of behavior

    NARCIS (Netherlands)

    Keijzer, F.A.

    2005-01-01

    This paper aims to do three things: First, to provide a review of John Staddon's book Adaptive dynamics: The theoretical analysis of behavior. Second, to compare Staddon's behaviorist view with current ideas on embodied cognition. Third, to use this comparison to explicate some outlines for a

  9. Mechanics lectures on theoretical physics

    CERN Document Server

    Sommerfeld, Arnold Johannes Wilhelm

    1952-01-01

    Mechanics: Lectures on Theoretical Physics, Volume I covers a general course on theoretical physics. The book discusses the mechanics of a particle; the mechanics of systems; the principle of virtual work; and d'alembert's principle. The text also describes oscillation problems; the kinematics, statics, and dynamics of a rigid body; the theory of relative motion; and the integral variational principles of mechanics. Lagrange's equations for generalized coordinates and the theory of Hamilton are also considered. Physicists, mathematicians, and students taking Physics courses will find the book

  10. Theoretical chemistry advances and perspectives

    CERN Document Server

    Eyring, Henry

    1977-01-01

    Theoretical Chemistry: Advances and Perspectives, Volume 2 covers all aspects of theoretical chemistry.This book reviews the techniques that have been proven successful in the study of interatomic potentials in order to describe the interactions between complex molecules. The ground state properties of the interacting electron gas when a magnetic field is present are also elaborated, followed by a discussion on the Gellman-Brueckner-Macke theory of the correlation energy that has applications in atomic and molecular systems.This volume considers the instability of the Hartree-Fock ground state

  11. Theoretical Framework for Robustness Evaluation

    DEFF Research Database (Denmark)

    Sørensen, John Dalsgaard

    2011-01-01

    This paper presents a theoretical framework for evaluation of robustness of structural systems, incl. bridges and buildings. Typically modern structural design codes require that ‘the consequence of damages to structures should not be disproportional to the causes of the damages’. However, although...... the importance of robustness for structural design is widely recognized the code requirements are not specified in detail, which makes the practical use difficult. This paper describes a theoretical and risk based framework to form the basis for quantification of robustness and for pre-normative guidelines...

  12. Theoretical mechanics for sixth forms

    CERN Document Server

    Plumpton, C

    1971-01-01

    Theoretical Mechanics for Sixth Forms, Second Edition is a 14-chapter book that begins by elucidating the nature of theoretical mechanics. The book then describes the statics of a particle in illustration of the techniques of handling vector quantities. Subsequent chapters focus on the principle of moments, parallel forces and centers of gravity; and the application of Newton's second law to the dynamics of a particle and the ideas of work and energy, impulse and momentum, and power. The concept of friction is also explained. This volume concludes with chapters concerning motion in a circle an

  13. Theoretical resources for a globalised bioethics.

    Science.gov (United States)

    Verkerk, Marian A; Lindemann, Hilde

    2011-02-01

    In an age of global capitalism, pandemics, far-flung biobanks, multinational drug trials and telemedicine it is impossible for bioethicists to ignore the global dimensions of their field. However, if they are to do good work on the issues that globalisation requires of them, they need theoretical resources that are up to the task. This paper identifies four distinct understandings of 'globalised' in the bioethics literature: (1) a focus on global issues; (2) an attempt to develop a universal ethical theory that can transcend cultural differences; (3) an awareness of how bioethics itself has expanded, with new centres and journals emerging in nearly every corner of the globe; (4) a concern to avoid cultural imperialism in encounters with other societies. Each of these approaches to globalisation has some merit, as will be shown. The difficulty with them is that the standard theoretical tools on which they rely are not designed for cross-cultural ethical reflection. As a result, they leave important considerations hidden. A set of theoretical resources is proposed to deal with the moral puzzles of globalisation. Abandoning idealised moral theory, a normative framework is developed that is sensitive enough to account for differences without losing the broader context in which ethical issues arise. An empirically nourished, self-reflexive, socially inquisitive, politically critical and inclusive ethics allows bioethicists the flexibility they need to pick up on the morally relevant particulars of this situation here without losing sight of the broader cultural contexts in which it all takes place.

  14. Theoretical principles and methods of lingvopersonology

    Directory of Open Access Journals (Sweden)

    Danylyuk Illya

    2016-08-01

    Full Text Available Background: The relevance of our research, above all, is theoretically motivated by the development of extraordinary scientific and practical interest in the possibilities of language processing of huge amount of data generated by people in everyday professional and personal life in the electronic forms of communication (e-mail, sms, voice, audio and video blogs, social networks, etc.. Purpose: The purpose of the article is to study and summarize theoretical principles of lingvopersonology to implement fundamental research: modeling specific linguistic identity by means of modern information technology. Results: Lingvopersonology developed some great theoretical foundations, its methods, tools, and significant achievements let us predict that the newest promising trend is a linguistic identity modeling by means of information technology, including language. We see three aspects of the modeling: 1 modeling the semantic level of linguistic identity – by means of the use of corpus linguistics; 2 sound level formal modeling of linguistic identity – with the help of speech synthesis; 3 formal graphic level modeling of linguistic identity – with the help of image synthesis (handwriting. Discussion: The project "Communicative-pragmatic, discourse, and grammatical lingvopersonology: structuring linguistic identity and computer modeling", which is implementing by the Department of General and Applied Linguistics and Slavonic philology, selected a task to model Yuriy Shevelyov (Sherekh’ language identity. A text corpus and audio corpus are being built, some samples of scientist’s handwriting are collected.

  15. Modeling business processes: theoretical and practical aspects

    Directory of Open Access Journals (Sweden)

    V.V. Dubininа

    2015-06-01

    Full Text Available The essence of process-oriented enterprise management has been examined in the article. The content and types of information technology have been analyzed in the article, due to the complexity and differentiation of existing methods, as well as the specificity of language, terminology of the enterprise business processes modeling. The theoretical aspects of business processes modeling have been reviewed and the modern traditional modeling techniques received practical application in the visualization model of retailers activity have been studied in the article. In the process of theoretical analysis of the modeling methods found that UFO-toolkit method that has been developed by Ukrainian scientists due to it systemology integrated opportunities, is the most suitable for structural and object analysis of retailers business processes. It was designed visualized simulation model of the business process "sales" as is" of retailers using a combination UFO-elements with the aim of the further practical formalization and optimization of a given business process.

  16. Theoretical Issues of Cluster Pattern Interfaces

    Science.gov (United States)

    Barneva, Reneta P.; Brimkov, Valentin E.; Kanev, Kamen K.

    Since the 80s, when the computer mouse was first invented, point-and-click functionality became widely adopted, in particular, for work with images and GUIs. It would be useful to provide such functionality for printed materials, as well. A direct point-and-click functionality should not require tablet-like devices, but should rather use an embedded marking which defines a coordinate system within the image. An original approach and related technology for direct interface, known as Cluster Pattern Interface (CLUSPI), was proposed [12]. It is based on an unobtrusive layer of the image defining a coordinate system, a camera-based pointing device, and decoding software. CLUSPI technology was invented and patented by one of the authors of this paper. Here we present the theoretical (mathematical) foundations of the methods developed. We also describe some theoretical challenges and propose solutions to them.

  17. A unified grand tour of theoretical physics

    CERN Document Server

    Lawrie, Ian D

    2013-01-01

    A Unified Grand Tour of Theoretical Physics invites its readers to a guided exploration of the theoretical ideas that shape our contemporary understanding of the physical world at the fundamental level. Its central themes, comprising space-time geometry and the general relativistic account of gravity, quantum field theory and the gauge theories of fundamental forces, and statistical mechanics and the theory of phase transitions, are developed in explicit mathematical detail, with an emphasis on conceptual understanding. Straightforward treatments of the standard models of particle physics and cosmology are supplemented with introductory accounts of more speculative theories, including supersymmetry and string theory. This third edition of the Tour includes a new chapter on quantum gravity, focusing on the approach known as Loop Quantum Gravity, while new sections provide extended discussions of topics that have become prominent in recent years, such as the Higgs boson, massive neutrinos, cosmological perturba...

  18. Theoretical framework of community education improvement

    Directory of Open Access Journals (Sweden)

    Zaúl Brizuela Castillo

    2015-05-01

    Full Text Available The paper explains the connection between the approach selected for the analysis and development of community education and the contradictions manifested in its theoretical and practical comprehension. As a result, a comprehensive model for community education, describing the theoretical and methodological framework to improve community education, is devised. This framework is based on a conscious organizing of educative influences applied to the regular task of the community under the coordinate action of social institutions and organization that promote the transformational action of the neighborhood assuming a protagonist role in the improvement of the quality of live and morals related to the socialism updating process. The comprehensive model was proved experimentally at District 59 of San Miguel town; the transformation of the community was scientifically registered together with the information gather by means of observation and interviewing. The findings proved the pertinence and feasibility of the proposed model.

  19. Theoretical aspects of spatial-temporal modeling

    CERN Document Server

    Matsui, Tomoko

    2015-01-01

    This book provides a modern introductory tutorial on specialized theoretical aspects of spatial and temporal modeling. The areas covered involve a range of topics which reflect the diversity of this domain of research across a number of quantitative disciplines. For instance, the first chapter provides up-to-date coverage of particle association measures that underpin the theoretical properties of recently developed random set methods in space and time otherwise known as the class of probability hypothesis density framework (PHD filters). The second chapter gives an overview of recent advances in Monte Carlo methods for Bayesian filtering in high-dimensional spaces. In particular, the chapter explains how one may extend classical sequential Monte Carlo methods for filtering and static inference problems to high dimensions and big-data applications. The third chapter presents an overview of generalized families of processes that extend the class of Gaussian process models to heavy-tailed families known as alph...

  20. Surface physics theoretical models and experimental methods

    CERN Document Server

    Mamonova, Marina V; Prudnikova, I A

    2016-01-01

    The demands of production, such as thin films in microelectronics, rely on consideration of factors influencing the interaction of dissimilar materials that make contact with their surfaces. Bond formation between surface layers of dissimilar condensed solids-termed adhesion-depends on the nature of the contacting bodies. Thus, it is necessary to determine the characteristics of adhesion interaction of different materials from both applied and fundamental perspectives of surface phenomena. Given the difficulty in obtaining reliable experimental values of the adhesion strength of coatings, the theoretical approach to determining adhesion characteristics becomes more important. Surface Physics: Theoretical Models and Experimental Methods presents straightforward and efficient approaches and methods developed by the authors that enable the calculation of surface and adhesion characteristics for a wide range of materials: metals, alloys, semiconductors, and complex compounds. The authors compare results from the ...

  1. Theoretical Interpretation of Cosmic Magnetic Fields

    Science.gov (United States)

    Mikhail, F. I.; Wanas, M. I.; Eid, A. M.

    1995-06-01

    The paper discusses the possibilty of interpreting the magnetic fields of astronomical bodies in the framework of a unified field theory. Using one of the solutions of the generalized field theory, a direct relation between the polar magnetic field, the angular velocity and the gravitational potential of the body considered, is obtained. The geometric model used for applications has spherical symmetry and is of the type (FIGI). The predictions of the theoretical formula, obtained from the model, are compared with available observational data, and with the empirical formula of Blackett. The theoretical formula gives a possible interpretation of a seed magnetic field which will develop and produce the large-scale magnetic field observed for celestial objects. The formula shows that the field is generated as a result of rotation of a massive object.

  2. Toward a theoretical model for mindfulness-based pain management.

    Science.gov (United States)

    Day, Melissa A; Jensen, Mark P; Ehde, Dawn M; Thorn, Beverly E

    2014-07-01

    Mindfulness, as both a process and a practice, has received substantial research attention across a range of health conditions, including chronic pain. Previously proposed mechanisms underlying the potential health-related benefits of mindfulness and mindfulness-based interventions (MBIs) are based on a strong theoretical background. However, to date, an empirically grounded, integrated theoretical model of the mechanisms of MBIs within the context of chronic pain has yet to be proposed. This is a surprising gap in the literature given the exponential growth of studies reporting on the benefits of MBIs for heterogeneous chronic pain conditions. Moreover, given the importance of determining how, and for whom, psychological interventions for pain management are effective, it is imperative that this gap in the literature be addressed. The overarching aim of the current theoretical paper was to propose an initial integrated, theoretically driven, and empirically based model of the mechanisms of MBIs for chronic pain management. Theoretical and research implications of the model are discussed. The theoretical considerations proposed herein can be used to help organize and guide future research that will identify the mechanisms underlying the benefits of mindfulness-based treatments, and perhaps psychosocial treatments more broadly, for chronic pain management. This focus article presents an initial framework for an empirically based, theoretical model of the mechanisms of MBIs for chronic pain management. Implications of the framework for refining theory and for future research are addressed. Copyright © 2014 American Pain Society. Published by Elsevier Inc. All rights reserved.

  3. Teaching Theoretical Criminology to Undergraduates.

    Science.gov (United States)

    Williams, James L.; And Others

    1995-01-01

    Maintains that U.S. society's emphasis on individuality and pragmatism renders theoretical study of criminal deviance difficult for many students. Presents a structured approach to this problem that includes an emphasis on practical applications, comparative analysis, analytical skills, and the substantive content of theories. Describes teaching…

  4. Refresher Course in Theoretical Physics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 6; Issue 7. Refresher Course in Theoretical Physics. Information and Announcements Volume 6 Issue 7 July 2001 pp 99-99. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/006/07/0099-0099. Resonance ...

  5. Tau decays: A theoretical perspective

    International Nuclear Information System (INIS)

    Marciano, W.J.

    1992-11-01

    Theoretical predictions for various tau decay rates are reviewed. Effects of electroweak radiative corrections are described. Implications for precision tests of the standard model and ''new physics'' searches are discussed. A perspective on the tau decay puzzle and 1-prong problem is given

  6. THEORETICAL INVESTIGATION OF STRESSES DISTRIBUTIONS ...

    African Journals Online (AJOL)

    The relationship between cavity size and number on one hand and combinations of web thicknesses were investigated theoretically. The least number of cavities was 4 for end-web to centre web ratio of 1:2 at constant shell thickness with the least web thickness equal to 12.5mm. The effects of the number of cavities and ...

  7. Theoretical Framework. The Bartlesville System.

    Science.gov (United States)

    Roberts, Tommy L.; And Others

    The theoretical framework underlying the Total Guidance Information Support System is discussed under the following topics: (1) Review of Literature, (2) A Brief History of Guidance and Counseling, (3) Philosophies of Guidance, (4) Decision-Making in Relation to Guidance, (5) The Origins of Information Theory, (6) Various Uses of Information…

  8. Theoretical models of DNA flexibility

    Czech Academy of Sciences Publication Activity Database

    Dršata, Tomáš; Lankaš, Filip

    2013-01-01

    Roč. 3, č. 4 (2013), s. 355-363 ISSN 1759-0876 Institutional support: RVO:61388963 Keywords : molecular dynamics simulations * base pair level * indirect readout Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 9.041, year: 2013

  9. Theoretical analysis of rolled joints

    International Nuclear Information System (INIS)

    Sinha, R.K.

    1975-01-01

    A procedure for theoretically analysing the case of an externally restrained sandwich joint formed by a hypothetical uniform hydrostatic expansion process is outlined. Reference is made to a computer program based on this theory. Results illustrating the effect of major joint variables on residual contact pressure are presented and analysed. The applicability and limitations of this theory are discussed. (author)

  10. Theoretical Linguistics And Multilingualism Research

    African Journals Online (AJOL)

    KATEVG

    Abstract. This paper tries to construct a bridge between the concerns of theoretical linguistics and those of multilingualism and code-switching (CS) research. It argues that the primary special point of interaction between these fields lies in the question of potential equivalence between elements or categories, bridging across ...

  11. Lightning Talks 2015: Theoretical Division

    Energy Technology Data Exchange (ETDEWEB)

    Shlachter, Jack S. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-11-25

    This document is a compilation of slides from a number of student presentations given to LANL Theoretical Division members. The subjects cover the range of activities of the Division, including plasma physics, environmental issues, materials research, bacterial resistance to antibiotics, and computational methods.

  12. Theoretical Considerations of Peer Tutoring.

    Science.gov (United States)

    Cohen, Jiska

    1986-01-01

    Addresses the need for a theoretical analysis of the peer tutoring process by discussing: definitions of the process, the psychological and educational processes in peer tutoring as a learning and teaching experience, and the conceptualization of peer tutoring as a cooperative social system and a group reward structure. (Author/ABB)

  13. Infantilism: Theoretical Construct and Operationalization

    Science.gov (United States)

    Sabelnikova, Y. V.; Khmeleva, N. L.

    2018-01-01

    The aim of this article is to define and operationalize the construct of infantilism. The methods of theoretical research involve analysis and synthesis. Age and content criteria are analyzed for childhood and adulthood. Infantile traits in an adult are described. Results: The characteristics of adult infantilism in the modern world are defined,…

  14. Data, Methods, and Theoretical Implications

    Science.gov (United States)

    Hannagan, Rebecca J.; Schneider, Monica C.; Greenlee, Jill S.

    2012-01-01

    Within the subfields of political psychology and the study of gender, the introduction of new data collection efforts, methodologies, and theoretical approaches are transforming our understandings of these two fields and the places at which they intersect. In this article we present an overview of the research that was presented at a National…

  15. Dramaturgical and Music-Theoretical Approaches to Improvisation Pedagogy

    Science.gov (United States)

    Huovinen, Erkki; Tenkanen, Atte; Kuusinen, Vesa-Pekka

    2011-01-01

    The aim of this article is to assess the relative merits of two approaches to teaching musical improvisation: a music-theoretical approach, focusing on chords and scales, and a "dramaturgical" one, emphasizing questions of balance, variation and tension. Adult students of music pedagogy, with limited previous experience in improvisation,…

  16. Dynamics in Higher Education Politics: A Theoretical Model

    Science.gov (United States)

    Kauko, Jaakko

    2013-01-01

    This article presents a model for analysing dynamics in higher education politics (DHEP). Theoretically the model draws on the conceptual history of political contingency, agenda-setting theories and previous research on higher education dynamics. According to the model, socio-historical complexity can best be analysed along two dimensions: the…

  17. A novel game theoretic approach for modeling competitive information diffusion in social networks with heterogeneous nodes

    Science.gov (United States)

    Agha Mohammad Ali Kermani, Mehrdad; Fatemi Ardestani, Seyed Farshad; Aliahmadi, Alireza; Barzinpour, Farnaz

    2017-01-01

    Influence maximization deals with identification of the most influential nodes in a social network given an influence model. In this paper, a game theoretic framework is developed that models a competitive influence maximization problem. A novel competitive influence model is additionally proposed that incorporates user heterogeneity, message content, and network structure. The proposed game-theoretic model is solved using Nash Equilibrium in a real-world dataset. It is shown that none of the well-known strategies are stable and at least one player has the incentive to deviate from the proposed strategy. Moreover, violation of Nash equilibrium strategy by each player leads to their reduced payoff. Contrary to previous works, our results demonstrate that graph topology, as well as the nodes' sociability and initial tendency measures have an effect on the determination of the influential node in the network.

  18. Modeling goals and functions of control and safety systems - theoretical foundations and extensions of MFM

    International Nuclear Information System (INIS)

    Lind, M.

    2005-10-01

    Multilevel Flow Modeling (MFM) has proven to be an effective modeling tool for reasoning about plant failure and control strategies and is currently exploited for operator support in diagnosis and on-line alarm analysis. Previous MFM research was focussed on representing goals and functions of process plants which generate, transform and distribute mass and energy. However, only a limited consideration has been given to the problems of modeling the control systems. Control functions are indispensable for operating any industrial plant. But modeling of control system functions has proven to be a more challenging problem than modeling functions of energy and mass processes. The problems were discussed by Lind and tentative solutions has been proposed but have not been investigated in depth until recently, partly due to the lack of an appropriate theoretical foundation. The purposes of the present report are to show that such a theoretical foundation for modeling goals and functions of control systems can be built from concepts and theories of action developed by Von Wright and to show how the theoretical foundation can be used to extend MFM with concepts for modeling control systems. The theoretical foundations has been presented in detail elsewhere by the present author without the particular focus on modeling control actions and MFM adopted here. (au)

  19. Modeling goals and functions of control and safety systems -theoretical foundations and extensions of MFM

    Energy Technology Data Exchange (ETDEWEB)

    Lind, M. [Oersted - DTU, Kgs. Lyngby (Denmark)

    2005-10-01

    Multilevel Flow Modeling (MFM) has proven to be an effective modeling tool for reasoning about plant failure and control strategies and is currently exploited for operator support in diagnosis and on-line alarm analysis. Previous MFM research was focussed on representing goals and functions of process plants which generate, transform and distribute mass and energy. However, only a limited consideration has been given to the problems of modeling the control systems. Control functions are indispensable for operating any industrial plant. But modeling of control system functions has proven to be a more challenging problem than modeling functions of energy and mass processes. The problems were discussed by Lind and tentative solutions has been proposed but have not been investigated in depth until recently, partly due to the lack of an appropriate theoretical foundation. The purposes of the present report are to show that such a theoretical foundation for modeling goals and functions of control systems can be built from concepts and theories of action developed by Von Wright and to show how the theoretical foundation can be used to extend MFM with concepts for modeling control systems. The theoretical foundations has been presented in detail elsewhere by the present author without the particular focus on modeling control actions and MFM adopted here. (au)

  20. Department of Theoretical Physics - Overview

    International Nuclear Information System (INIS)

    Kwiecinski, J.

    1999-01-01

    Full text: Research activity of the Department of Theoretical Physics concerns theoretical high-energy and elementary particle physics, intermediate energy particle physics, theoretical nuclear physics, theory of nuclear matter, theory of quark-gluon plasma and of relativistic heavy-ion collisions, theoretical astrophysics and general physics. There is some emphasis on the phenomenological applications of the theoretical research yet the more formal problems are also considered. The detailed summary of the research projects and of the results obtained in various fields is given in the abstracts. Our Department actively collaborates with other Departments of the Institute as well as with several scientific institutions both in Poland and abroad. In particular members of our Department participate in the EC network which allows mobility of researchers. Several members of our Department have also participated in the research projects funded by the Polish Committee for Scientific Research (KBN). The complete list of grants is listed separately. Besides pure research, members of our Department are also involved in graduate and undergraduate teaching activity both at our Institute as well as at other academic institutions in Cracow. At present five PhD students are working for their degree under supervision of the senior members from the Department. In the last year we have completed our active participation in the educational TEMPUS programme funded by the European Communities. This programme has in particular allowed exchange of students between our Department and the Department of Physics of the University of Durham in the United Kingdom. In 1998 we joined the SOCRATES - ERASMUS project which will make it possible to continue this exchange. (author)