Science.gov

Sample records for activity theory perspective

  1. Mature students learning statistics: The activity theory perspective

    NASA Astrophysics Data System (ADS)

    Gordon, Sue

    1993-09-01

    The concept of approach "stresses relationships between intention, process and outcome within a specified context as described by an individual" (Schmeck, 1988, p. 10). This paper explores the approaches to learning of a group of mature students from the theoretical perspective of activity theory in order to gain an insight into some of the ways statistics is learned. In this framework, learning, regarded as goal-directed behaviour, is analysed by exploring the socio-historical factors relating to students' self regulation of their cognitive activities. The material is derived from questionnaires and interviews with five students, and focuses on the students' own interpretations of the contexts affecting their approaches.

  2. Contradictions between the Virtual and Physical High School Classroom: A Third-Generation Activity Theory Perspective

    ERIC Educational Resources Information Center

    Murphy, Elizabeth; Manzanares, Maria A. Rodriguez

    2008-01-01

    This paper uses a third-generation Activity Theory perspective to gain insight into the contradictions between the activity systems of the physical and virtual high school classroom from the perspective of teachers who had transitioned from one system to the other. Data collection relied on semi-structured interviews conducted with e-teachers as…

  3. An Activity Theory Perspective on Student-Reported Contradictions in International Telecollaboration

    ERIC Educational Resources Information Center

    Basharina, Olga K.

    2007-01-01

    This process-oriented study focuses on contradictions that emerged in a WebCT bulletin board collaboration among English learners from Japan, Mexico and Russia, and explains them from the perspective of activity theory (Leont'ev, 1978, 1981; Engestrom, 1987, 1999). The study identified a) two "intra-cultural" contradictions--to post or…

  4. Language-Learning Motivation during Short-Term Study Abroad: An Activity Theory Perspective

    ERIC Educational Resources Information Center

    Allen, Heather Willis

    2010-01-01

    This study investigated the development of language-learning motivation during short-term study abroad (SA) for six intermediate-level students of French. Taking an activity theory perspective, findings demonstrated that one of two orientations motivated participants to study or continue studying French at the college level: linguistic motives or…

  5. Using behavioural activation in the treatment of depression: a control theory perspective.

    PubMed

    McEvoy, P; Law, A; Bates, R; Hylton, K; Mansell, W

    2013-12-01

    Behavioural activation is an intervention that can be used to counteract the typical patterns of withdrawal, avoidance and inactivity that characterize depression. This paper examines the processes of change that may occur during behavioural activation from the perspective of control theory. Some of the key concepts that are associated with control theory are introduced and the process of change that may occur during behavioural activation is illustrated using two case studies. The case studies provide anecdotal evidence which supports the hypothesis that the effective implementation of behavioural activation may depend upon clients being able to retain or regain the sense of control that they value. The differences between a control-theory-based approach and more orthodox behavioural and cognitive approaches are highlighted and the implications of these differences are discussed. Flexible approaches that are informed by control theory, may offer a useful alternative to the more established behavioural and cognitive approaches towards behavioural activation.

  6. Cyber Dating Abuse Victimization Among Secondary School Students From a Lifestyle-Routine Activities Theory Perspective.

    PubMed

    Van Ouytsel, Joris; Ponnet, Koen; Walrave, Michel

    2016-02-12

    Controlling one's romantic partner through digital media is a form of cyber dating abuse. To design effective educational campaigns, a deeper understanding of how some young people become victim of this type of abuse within their romantic relationships is warranted. This study is the first to adopt a lifestyle-routine activities theory perspective toward online romantic partner monitoring, by looking at whether secondary school students' risky digital lifestyle and their digital media use are linked to a higher chance of being controlled by a romantic partner, taking into account gender, age, and the length of the romantic relationship. The data of 466 secondary school students (71.0% girls, n = 331) between 16 and 22 years old (M = 17.99 years; SD = 0.92) who were in a romantic relationship are analyzed. Linear regression analysis suggests that engagement in online risk behavior, the length of the romantic relationship, engagement in sexting with the romantic partner, and the amount of social networking site use were significantly linked to victimization of digital controlling behavior. The results are important to practitioners, as they indicate that messages about safe Internet use should be incorporated in prevention and educational campaigns with regard to cyber dating abuse. Suggestions for future research are discussed.

  7. Activity Theory.

    ERIC Educational Resources Information Center

    Koschmann, Timothy; Roschelle, Jeremy; Nardi, Bonnie A.

    1998-01-01

    Includes three articles that discuss activity theory, based on "Context and Consciousness." Topics include human-computer interaction; computer interfaces; hierarchical structuring; mediation; contradictions and development; failure analysis; and designing educational technology. (LRW)

  8. Exploration of Tensions in a Mobile-Technology Supported Fieldtrip: An Activity Theory Perspective

    ERIC Educational Resources Information Center

    Lai, Chih-Hung; Chen, Fei-Ching; Yang, Jie-Chi

    2014-01-01

    The purpose of this study was to analyze how mobile technologies were incorporated and implemented in an outdoor learning activity. Two classes of primary school students participated in the experiment. Using activity theory as an analytical framework, it is found that underlying tensions provided rich insights into system dynamics and that…

  9. Research in the Work of New Zealand Teacher Educators: A Cultural-Historical Activity Theory Perspective

    ERIC Educational Resources Information Center

    Berg, David A. G.; Gunn, Alexandra C.; Hill, Mary F.; Haigh, Mavis

    2016-01-01

    In this article we use cultural-historical activity theory to explore the place of research in the work of New Zealand university-based teacher educators (TEs). We consider how aspirations for a research-informed initial teacher education are served by New Zealand universities' recruitment practices and TEs' actual work. We suggest that TEs value…

  10. Oneiric activity and the analytical process. A semiotic perspective on Willy Baranger's theory of dreams.

    PubMed

    Vinocur-Fischbein, Susana

    2005-10-01

    This author reconsiders, from a semiotic perspective, the theoretical and technical ideas developed by Willy and Madeleine Baranger, especially W. Baranger's views on the function of dreams, the status of oneiric symbols and the further clinical-technical use of dreams in the context of the inter-subjective dynamic field, together with the basic unconscious fantasy that emerges in the analytic situation. She attempts to relate the Barangers' ideas to others arising from Peirce's analytic semiotics that would support a triadic conceptualization of dreams. The need to incorporate a pragmatic view of communication and of the processes of production of sense as contributions to dream metapsychology and interpretation in the case of non-neurotic patients is particularly emphasized. On the basis of the hypothesis of a described series of triads underlying the production and retelling of dreams, the acknowledgment of these produced/told dreams as intentional signs allows the presence of a continuous process of semiosis to be proposed. The author introduces clinical material to illustrate the communicative value of dreams through the textual analysis of the report and accompanying associations of three dreams. Such analysis takes a linguistic pragmatics approach that examines those aspects of meaning not accounted for by a restricted semantic theory.

  11. Physical activity adoption to adherence, lapse, and dropout: a self-determination theory perspective.

    PubMed

    Kinnafick, Florence-Emilie; Thøgersen-Ntoumani, Cecilie; Duda, Joan L

    2014-05-01

    Grounded in Self-Determination Theory, we aimed to explore and identify key motivational processes involved in the transition from a physically inactive to an active lifestyle, and the processes involved in lapse and dropout behavior within a walking program. We implemented a qualitative, longitudinal case study method, using semistructured interviews and theoretical thematic analyses. Fifteen women were interviewed over 10 months and three profiles were generated: (a) nonadherence, (b) lapse/readoption of physical activity, and (c) adherence. Internalization of walking behavior was key to adherence. Satisfaction of the needs for competence and relatedness were central for participation during exercise at the adoption stages, and autonomy was particularly pertinent in facilitating adherence. Those who lapsed and restarted physical activity experienced feelings of autonomy at the point of readoption. Sources of support were driving forces in the adoption and adherence phases.

  12. Eliciting Metacognitive Experiences and Reflection in a Year 11 Chemistry Classroom: An Activity Theory Perspective

    NASA Astrophysics Data System (ADS)

    Thomas, Gregory P.; McRobbie, Campbell J.

    2013-06-01

    Concerns regarding students' learning and reasoning in chemistry classrooms are well documented. Students' reasoning in chemistry should be characterized by conscious consideration of chemical phenomenon from laboratory work at macroscopic, molecular/sub-micro and symbolic levels. Further, students should develop metacognition in relation to such ways of reasoning about chemistry phenomena. Classroom change eliciting metacognitive experiences and metacognitive reflection is necessary to shift entrenched views of teaching and learning in students. In this study, Activity Theory is used as the framework for interpreting changes to the rules/customs and tools of the activity systems of two different classes of students taught by the same teacher, Frances, who was teaching chemical equilibrium to those classes in consecutive years. An interpretive methodology involving multiple data sources was employed. Frances explicitly changed her pedagogy in the second year to direct students attention to increasingly consider chemical phenomena at the molecular/sub-micro level. Additionally, she asked students not to use the textbook until toward the end of the equilibrium unit and sought to engage them in using their prior knowledge of chemistry to understand their observations from experiments. Frances' changed pedagogy elicited metacognitive experiences and reflection in students and challenged them to reconsider their metacognitive beliefs about learning chemistry and how it might be achieved. While teacher change is essential for science education reform, students are not passive players in change efforts and they need to be convinced of the viability of teacher pedagogical change in the context of their goals, intentions, and beliefs.

  13. Perspectives in active liquid crystals.

    PubMed

    Majumdar, Apala; Cristina, Marchetti M; Virga, Epifanio G

    2014-11-28

    Active soft matter is a young, growing field, with potential applications to a wide variety of systems. This Theme Issue explores this emerging new field by highlighting active liquid crystals. The collected contributions bridge theory to experiment, mathematical theories of passive and active nematics, spontaneous flows to defect dynamics, microscopic to continuum levels of description, spontaneous activity to biological activation. While the perspectives offered here only span a small part of this rapidly evolving field, we trust that they might provide the interested reader with a taste for this new class of non-equilibrium systems and their rich behaviour.

  14. Multi-Level Discourse Analysis in a Physics Teaching Methods Course from the Psychological Perspective of Activity Theory

    ERIC Educational Resources Information Center

    Vieira, Rodrigo Drumond; Kelly, Gregory J.

    2014-01-01

    In this paper, we present and apply a multi-level method for discourse analysis in science classrooms. This method is based on the structure of human activity (activity, actions, and operations) and it was applied to study a pre-service physics teacher methods course. We argue that such an approach, based on a cultural psychological perspective,…

  15. School Engagement among Aboriginal Students in Northern Canada: Perspectives From Activity Settings Theory

    ERIC Educational Resources Information Center

    Davison, Colleen M.; Hawe, Penelope

    2012-01-01

    Background: Educational disengagement is a public health concern among Aboriginal populations in many countries. It has been investigated previously in a variety of ways, with the conventional focus being on the children themselves. Activity settings are events and places, theorized in terms of their symbols, roles, time frame, funds, people, and…

  16. Activity Theory and Ontology

    ERIC Educational Resources Information Center

    Peim, Nick

    2009-01-01

    This paper seeks to re-examine Yrio Engestrom's activity theory as a technology of knowledge designed to enable positive transformations of specific practices. The paper focuses on a key paper where Engestrom defines the nature and present state of activity theory. Beginning with a brief account of the relations between activity theory and…

  17. Multi-level Discourse Analysis in a Physics Teaching Methods Course from the Psychological Perspective of Activity Theory

    NASA Astrophysics Data System (ADS)

    Drumond Vieira, Rodrigo; Kelly, Gregory J.

    2014-11-01

    In this paper, we present and apply a multi-level method for discourse analysis in science classrooms. This method is based on the structure of human activity (activity, actions, and operations) and it was applied to study a pre-service physics teacher methods course. We argue that such an approach, based on a cultural psychological perspective, affords opportunities for analysts to perform a theoretically based detailed analysis of discourse events. Along with the presentation of analysis, we show and discuss how the articulation of different levels offers interpretative criteria for analyzing instructional conversations. We synthesize the results into a model for a teacher's practice and discuss the implications and possibilities of this approach for the field of discourse analysis in science classrooms. Finally, we reflect on how the development of teachers' understanding of their activity structures can contribute to forms of progressive discourse of science education.

  18. Central Perspectives and Debates in Organization Theory.

    ERIC Educational Resources Information Center

    Astley, W. Graham; Van de Ven, Andrew H.

    1983-01-01

    Classifies organizational theories, by analytical level and assumptions about human nature, into four perspectives (system-structural, strategic choice, natural selection, collective action), each with different concepts of organizational structure, behavior, change, and managerial roles. Identifies six debates generated among the perspectives and…

  19. Reflections on Activity Theory

    ERIC Educational Resources Information Center

    Bakhurst, David

    2009-01-01

    It is sometimes suggested that activity theory represents the most important legacy of Soviet philosophy and psychology. But what exactly "is" activity theory? The canonical account in the West is given by Engestrom, who identifies three stages in the theory's development: from Vygotsky's insights, through Leontiev's articulation of the…

  20. Play: The Reversal Theory Perspective.

    ERIC Educational Resources Information Center

    Kerr, J. H.

    The intention of this theoretical paper is to present a reversal theory interpretation of play phenomena. Reversal theory, a developing theory in psychology, concerns the complex relationship between experience and motivation. One of the central charactieristics of the theory is that it attempts to understand why so much of human behavior is…

  1. Career Theory from an International Perspective

    ERIC Educational Resources Information Center

    Guichard, Jean; Lenz, Janet

    2005-01-01

    The Career Theory in an International Perspective group highlighted 7 approaches: action theory, self-construction model, transition model, dynamics of entering the workforce, narrative in career guidance, dilemma approach, and interactive identity construction. Three main characteristics appear to be common to these different contributions: (a)…

  2. Activation of C-H bond in methane by Pd atom from the bonding evolution theory perspective.

    PubMed

    Nizovtsev, Anton S

    2013-08-15

    We report detailed study focused on the electron density redistribution during the simple oxidative addition reaction being the crucial stage of various catalytic processes. The bonding evolution theory based on the electron localization function and Thom's catastrophe theory shows that activation of methane's C-H bond by Pd atom consist of six elementary steps. The important feature revealed is the pronounced reorganization of Pd's outer core maxima corresponding to N-shell electrons of metal. Electronic rearrangements identified in this model reaction are likely to be the case in the more complex reactions of the same type involving transition metal compounds and, in principle, can be observed by modern ultrafast spectroscopy and diffraction techniques.

  3. A cultural historical activity theory perspective to understand preservice science teachers' reflections on and tensions during a microteaching experience

    NASA Astrophysics Data System (ADS)

    Sezen-Barrie, Asli; Tran, Minh-Dan; McDonald, Scott P.; Kelly, Gregory J.

    2014-09-01

    This study draws from cultural historical activity theory (CHAT) to analyze preservice teachers' reflections on a microteaching activity. Microteaching activities involved preservice educators teaching middle school students from local schools. The study was conducted with 23 preservice teachers enrolled in a large university's teacher education program. During this secondary science teaching methods course, every pair of preservice teachers engaged in 20 minute microteaching activity with 3-5 middle school students. The microteaching was videotaped, and the teachers subsequently provided voice-over reflections on a second audio track. Transcriptions of the microteaching events were analyzed through the formation of event maps showing the phases of activity and the organizational sequence of actions. Event maps were used to investigate the focus of preservice teachers' reflections. The results showed that while learning from their microteaching, preservice teachers focused primarily on the mediating artifacts and gave least attention to the larger teaching community surrounding these activities. Use of CHAT helped to identify challenges in different elements of the microteaching activity. The study contributes to how reflective practice can be enhanced through attention to the social and cultural dimensions of the teaching.

  4. Defining Adapted Physical Activity: International Perspectives

    ERIC Educational Resources Information Center

    Hutzler, Yeshayahu; Sherrill, Claudine

    2007-01-01

    The purpose of this study was to describe international perspectives concerning terms, definitions, and meanings of adapted physical activity (APA) as (a) activities or service delivery, (b) a profession, and (c) an academic field of study. Gergen's social constructionism, our theory, guided analysis of multiple sources of data via qualitative…

  5. Perspectives on global change theory

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Global changes in ecological drivers, such as CO2 concentrations, climate, and nitrogen deposition, are increasingly recognized as key to understanding contemporary ecosystem dynamics, but a coherent theory of global change has not yet been developed. We outline the characteristics of a theory of gl...

  6. Developing the Theory of Perspective Transformation

    ERIC Educational Resources Information Center

    Hoggan, Chad; Mälkki, Kaisu; Finnegan, Fergal

    2017-01-01

    Mezirow's theory of perspective transformation has proved to be a great asset to the scholarship of adult education and has provided a solid theoretical base for understanding complex learning phenomena. However, in the discussions surrounding Mezirow's work, a certain "stuckness" appears which we think is unproductive. Critiques of…

  7. Time perspective and physical activity among central Appalachian adolescents.

    PubMed

    Gulley, Tauna

    2013-04-01

    Time perspective is a cultural behavioral concept that reflects individuals' orientations or attitudes toward the past, present, or future. Individuals' time perspectives influence their choices regarding daily activities. Time perspective is an important consideration when teaching adolescents about the importance of being physically active. However, little is known about the relationship between time perspective and physical activity among adolescents. The purpose of this study was to determine the time perspective of central Appalachian adolescents and explore the relationship between time perspective and physical activity. This study was guided by The theory of planned behavior (TPB). One hundred and ninety-three students completed surveys to examine time perspective and physical activity behaviors. Data were collected in one school. Results of this study can inform school nurses and high school guidance counselors about the importance of promoting a future-oriented time perspective to improve physical activity and educational outcomes.

  8. Gravity: A gauge theory perspective

    NASA Astrophysics Data System (ADS)

    Nester, James M.; Chen, Chiang-Mei

    2016-07-01

    The evolution of a generally covariant theory is under-determined. One hundred years ago such dynamics had never before been considered; its ramifications were perplexing, its future important role for all the fundamental interactions under the name gauge principle could not be foreseen. We recount some history regarding Einstein, Hilbert, Klein and Noether and the novel features of gravitational energy that led to Noether’s two theorems. Under-determined evolution is best revealed in the Hamiltonian formulation. We developed a covariant Hamiltonian formulation. The Hamiltonian boundary term gives covariant expressions for the quasi-local energy, momentum and angular momentum. Gravity can be considered as a gauge theory of the local Poincaré group. The dynamical potentials of the Poincaré gauge theory of gravity are the frame and the connection. The spacetime geometry has in general both curvature and torsion. Torsion naturally couples to spin; it could have a significant magnitude and yet not be noticed, except on a cosmological scale where it could have significant effects.

  9. Migraine--new perspectives from chaos theory.

    PubMed

    Kernick, D

    2005-08-01

    Converging from a number of disciplines, non-linear systems theory and in particular chaos theory offer new descriptive and prescriptive insights into physiological systems. This paper briefly reviews an approach to physiological systems from these perspectives and outlines how these concepts can be applied to the study of migraine. It suggests a wide range of potential applications including new approaches to classification, treatment and pathophysiological mechanisms. A hypothesis is developed that suggests that dysfunctional consequences can result from a mismatch between the complexity of the environment and the system that is seeking to regulate it and that the migraine phenomenon is caused by an incongruity between the complexity of mid brain sensory integration and cortical control networks. Chaos theory offers a new approach to the study of migraine that complements existing frameworks but may more accurately reflect underlying physiological mechanisms.

  10. Understanding EFL Students' Participation in Group Peer Feedback of L2 Writing: A Case Study from an Activity Theory Perspective

    ERIC Educational Resources Information Center

    Yu, Shulin; Lee, Icy

    2015-01-01

    While the last three decades have witnessed a growing body of research on peer feedback in first language (L1) and second language (L2) writing, research about students' motives for participating in group peer feedback has remained underexplored. In order to fill this important gap, this case study, guided by the constructs of activity and motive…

  11. Middle Range Theory: A Perspective on Development and Use.

    PubMed

    Liehr, Patricia; Smith, Mary Jane

    This replication and critique addresses ongoing development and use of middle range theory since considering this body of nursing knowledge 18 years ago. Middle range theory is appreciated as essential to the structure of nursing knowledge. Nine middle range theories that demonstrate ongoing use by the theory authors are analyzed using the criteria of theory name, theory generation, disciplinary perspective, theory model, practice use and research use. Critique conclusions indicate the importance of staying with the theory over time, naming and development consistent with the disciplinary perspective, movement to an empirical level, and bringing middle range theory to the interdisciplinary table.

  12. A complementary perspective to primary socialization theory.

    PubMed

    Nurco, D N; Lerner, M

    1999-06-01

    Primary socialization theory as formulated by Oetting and his associates emphasizes the transmission of societal norms during childhood and adolescence within society's three major socializing agencies: family, school, and small, intimate peer groups. The norms thus transmitted may be prosocial or deviant, with prosocial norms more likely to be transmitted through strong bonds to healthy families or schools. Personality traits and other personal characteristics influence negative outcomes, such as deviance or drug use, only to the extent that they interfere with socialization to family or school. Our own research does not address primary socialization theory directly in that we have not focused on the transmission of norms per se as central. Nevertheless, we have studied social factors, personality factors, and various psychopathologies as etiological for deviance and substance use. By and large our research has supported the hypotheses of primary socialization theory, even extending them in specific areas, such as the importance of family influences as etiological. Our work has also emphasized the significance of rebelliousness and impulse control in this regard. Like all large-scale theories which necessarily abstract from the totality and diversity of human behavior, primary socialization theory leaves some gaps requiring further elucidation. Among these is its ethnocentric and temporocentric perspective, but even within this perspective it understates the difficulties for adolescents in making a successful transition to adult social roles (Kingley Davis) and in establishing a unique identity independent of parents (Erik H. Erikson). Also, it generally ignores the salience of the youth culture as rebellious against the older generation, a particularly important characteristic of modern society. And finally, it should cover the process of "maturing out" of deviance, which perhaps results in a reaffirmation of the legitimacy of norms transmitted earlier, and it

  13. Modern Perspectives in Applied Mathematics: Theory and Numerics of PDEs

    DTIC Science & Technology

    2015-04-13

    SECURITY CLASSIFICATION OF: The International Conference on “Modern Perspectives in Applied Mathematics : Theory and Numerics of PDEs” took place April... mathematics , focusing on theoretical, computational and applied aspects of partial differential equations. The meeting brought together researchers from...Release; Distribution Unlimited Final Report: Modern Perspectives in Applied Mathematics : Theory and Numerics of PDEs The views, opinions and/or

  14. Protection motivation theory: is this a worthwhile theory for physical activity promotion?

    PubMed

    Plotnikoff, Ronald C; Trinh, Linda

    2010-04-01

    This article reviews the published studies in the physical activity domain, which include novel hypothesis from our laboratory, that have tested Rogers' Protection Motivation Theory. Across the various population groups, the theory's coping appraisal is generally supported; however, there is limited support for the theory's threat components. Implications of these findings are discussed from both theoretical and practical perspectives.

  15. Therapeutic Theory and Social Context: A Social Constructionist Perspective.

    ERIC Educational Resources Information Center

    Lynch, Gordon

    1997-01-01

    Explores the foundation of therapeutic theory from the perspective of social constructionism. Proposes a theoretical description of the interaction between an individual and the social context in the formation of therapeutic theory. Then explores this description in relation to the early life and subsequent therapeutic theory of Carl Rogers. (RJM)

  16. Chaos theory perspective for industry clusters development

    NASA Astrophysics Data System (ADS)

    Yu, Haiying; Jiang, Minghui; Li, Chengzhang

    2016-03-01

    Industry clusters have outperformed in economic development in most developing countries. The contributions of industrial clusters have been recognized as promotion of regional business and the alleviation of economic and social costs. It is no doubt globalization is rendering clusters in accelerating the competitiveness of economic activities. In accordance, many ideas and concepts involve in illustrating evolution tendency, stimulating the clusters development, meanwhile, avoiding industrial clusters recession. The term chaos theory is introduced to explain inherent relationship of features within industry clusters. A preferred life cycle approach is proposed for industrial cluster recessive theory analysis. Lyapunov exponents and Wolf model are presented for chaotic identification and examination. A case study of Tianjin, China has verified the model effectiveness. The investigations indicate that the approaches outperform in explaining chaos properties in industrial clusters, which demonstrates industrial clusters evolution, solves empirical issues and generates corresponding strategies.

  17. A Social Theory Perspective on e-Learning

    ERIC Educational Resources Information Center

    Remtulla, Karim A.

    2008-01-01

    Current research on e-learning that focuses predominantly on instructional programming, and on various hardware and software, essentially neglects the more socio-cultural perspectives on e-learning. With this in mind, this article proceeds from a social theory perspective with a more socio-culturally engaged look at e-learning for workplace…

  18. Theories on Drug Abuse: Selected Contemporary Perspectives. Research Monograph 30.

    ERIC Educational Resources Information Center

    Lettieri, Dan J., Ed.; And Others

    This volume presents various theoretical orientations and perspectives of the drug abuse research field, derived from the social and biomedical sciences. The first section contains a separate theoretical overview for each of the 43 theories or perspectives. The second section contains five chapters which correspond to the five components of a drug…

  19. Continuing Bonds in Bereavement: An Attachment Theory Based Perspective

    ERIC Educational Resources Information Center

    Field, Nigel P.; Gao, Beryl; Paderna, Lisa

    2005-01-01

    An attachment theory based perspective on the continuing bond to the deceased (CB) is proposed. The value of attachment theory in specifying the normative course of CB expression and in identifying adaptive versus maladaptive variants of CB expression based on their deviation from this normative course is outlined. The role of individual…

  20. Educational Theory and Practice in an Aristotelian Perspective.

    ERIC Educational Resources Information Center

    Saugstad, Tone

    2002-01-01

    Uses an Aristotelian perspective to discuss the relationship between educational theory and practice. Draws on Aristotle's Nichomachean ethics and his description of three forms of knowledge to show that educational theory and practice are of qualitatively different categories and thus cannot automatically enter into a "fruitful…

  1. Learning Theories and Assessment Methodologies--An Engineering Educational Perspective

    ERIC Educational Resources Information Center

    Hassan, O. A. B.

    2011-01-01

    This paper attempts to critically review theories of learning from the perspective of engineering education in order to align relevant assessment methods with each respective learning theory, considering theoretical aspects and practical observations and reflections. The role of formative assessment, taxonomies, peer learning and educational…

  2. A Systems Perspective on World-Systems Theory.

    ERIC Educational Resources Information Center

    Straussfogel, Debra

    1997-01-01

    Presents a conceptual framework that embeds ideas from world-systems theory within the larger context known as the theory of dissipative structures. This perspective reflects the interconnectedness of individual and separate places into a larger global system that is a single functioning spatial entity. (MJP)

  3. Engineers' professional learning: a practice-theory perspective

    NASA Astrophysics Data System (ADS)

    Reich, Ann; Rooney, Donna; Gardner, Anne; Willey, Keith; Boud, David; Fitzgerald, Terry

    2015-07-01

    With the increasing challenges facing professional engineers working in more complex, global and interdisciplinary contexts, different approaches to understanding how engineers practice and learn are necessary. This paper draws on recent research in the social sciences from the field of workplace learning, to suggest that a practice-theory perspective on engineers' professional learning is fruitful. It shifts the focus from the attributes of the individual learner (knowledge, skills and attitudes) to the attributes of the practice (interactions, materiality, opportunities and challenges). Learning is thus more than the technical acquisition and transfer of knowledge, but a complex bundle of activities, that is, social, material, embodied and emerging. The paper is illustrated with examples from a research study of the learning of experienced engineers in the construction industry to demonstrate common practices - site walks and design review meetings - in which learning takes place.

  4. Perspective of Postpartum Depression Theories: A Narrative Literature Review

    PubMed Central

    Abdollahi, Fatemeh; Lye, Munn-Sann; Zarghami, Mehran

    2016-01-01

    Postpartum depression is the most prevalent emotional problem during a women's lifespan. Untreated postpartum depression may lead to several consequences such as child, infant, fetal, and maternal effects. The main purpose of this article is to briefly describe different theoretical perspectives of postpartum depression. A literature search was conducted in Psych Info, PubMed, and Science Direct between 1950 and 2015. Additional articles and book chapters were referenced from these sources. Different theories were suggested for developing postpartum depression. Three theories, namely, biological, psychosocial, and evolutionary were discussed. One theory or combinations of psychosocial, biological, and evolutionary theories were considered for postpartum depression. The most important factor that makes clinicians’ choice of intervention is their theoretical perspectives. Healthcare providers and physicians should help women to make informed choices regarding their treatment based on related theories. PMID:27500126

  5. Perspective of Postpartum Depression Theories: A Narrative Literature Review.

    PubMed

    Abdollahi, Fatemeh; Lye, Munn-Sann; Zarghami, Mehran

    2016-06-01

    Postpartum depression is the most prevalent emotional problem during a women's lifespan. Untreated postpartum depression may lead to several consequences such as child, infant, fetal, and maternal effects. The main purpose of this article is to briefly describe different theoretical perspectives of postpartum depression. A literature search was conducted in Psych Info, PubMed, and Science Direct between 1950 and 2015. Additional articles and book chapters were referenced from these sources. Different theories were suggested for developing postpartum depression. Three theories, namely, biological, psychosocial, and evolutionary were discussed. One theory or combinations of psychosocial, biological, and evolutionary theories were considered for postpartum depression. The most important factor that makes clinicians' choice of intervention is their theoretical perspectives. Healthcare providers and physicians should help women to make informed choices regarding their treatment based on related theories.

  6. A Theory of Learning (?) in Confucian Perspective

    ERIC Educational Resources Information Center

    Cheng, Chung-ying

    2016-01-01

    In this article, I present a model of four dimensions for the idea of learning in the classical Confucian perspective. This model is intended to capture the most essential four aspects of learning which explain why self-cultivation of a human person toward an end of self-fulfillment and social transformation of humanity is possible. I shall also…

  7. An Application of Activity Theory

    ERIC Educational Resources Information Center

    Marken, James A.

    2006-01-01

    Activity Theory has often been used in workplace settings to gain new theoretical understandings about work and the humans who engage in work, but rarely has there been sufficient detail in the literature to allow HPT practitioners to do their own activity analysis. The detail presented in this case is sufficient for HPT practitioners to begin to…

  8. Perspectives on Writing: Research, Theory, and Practice.

    ERIC Educational Resources Information Center

    Indrisano, Roselmina, Ed.; Squire, James R., Ed.

    Providing a foundation in which researchers may build future research and theory and in which teachers may design more effective classroom practice, this book presents 12 essays that bring together the contributions of researchers and teacher-scholars to present the significant theory and research related to the writing process. The book is…

  9. On theory in ecology: Another perspective

    USGS Publications Warehouse

    Houlahan, Jeff E.; McKinney, Shawn T.; Rochette, Rémy

    2015-01-01

    We agree with Marquet and colleagues (2014) that the balance between theory and data is an important one. However, their description of what constitutes good theory in ecology ignores the most important characteristic of successful theory—that it accurately and precisely describes the way the world works.

  10. Southern Theory Perspective and Career Development

    ERIC Educational Resources Information Center

    Burns, Edgar

    2008-01-01

    This paper offers a preliminary exploration of Connell's idea of southern theory and its potential application to career development. Four assumptions of metropolitan (northern) social theory are described: (a) the claim of universality, (b) reading from the centre, (c) gestures of exclusion, and (d) grand erasure. These assumptions are…

  11. Organizational Theories and Analysis: A Feminist Perspective

    NASA Astrophysics Data System (ADS)

    Irefin, Peace; Ifah, S. S.; Bwala, M. H.

    2012-06-01

    This paper is a critique of organization theories and their failure to come to terms with the fact of the reproduction of labour power within a particular form of the division of labour. It examines feminist theory and its aims to understand the nature of inequality and focuses on gender, power relations and sexuality part of the task of feminists which organizational theories have neglected is to offer an account of how the different treatments of the sexes operate in our culture. The paper concludes that gender has been completely neglected within the organizational theory which result in a rhetorical reproduction of males as norms and women as others. It is recommended that only radical form of organization theory can account for the situation of women in organisational setting

  12. Everyday Theory: A Practical Application of the Ecological Perspective

    ERIC Educational Resources Information Center

    Barry, Adam; Honore, Heather

    2009-01-01

    Knowledge of health behavior theory allows health practitioners to design health promotion interventions that are based on factors that influence behavior. Objectives: At the conclusion of this lesson, students will be able to: (1) identify and define the three major levels of influence of the Ecological Perspective, (2) identify how each level of…

  13. Education Theory and Practice: Caribbean Perspectives (Second Edition).

    ERIC Educational Resources Information Center

    Bastick, Tony, Ed.

    Chapters in this collection provide the perspectives of Caribbean educators on a variety of issues related to the theory and practice of education. Section 1, "Professional Development," contains these chapters: (1) "Is There Still Room for the Model Teacher?" (Sonia Jones); (2) "Using an In-Service Programme To Develop as…

  14. Structural Learning Theory: Current Status and New Perspectives.

    ERIC Educational Resources Information Center

    Scandura, Joseph M.

    This paper discusses the current status of and new perspectives on the Structural Learning Theory (SLT). Special consideration is given to how SLT has been influenced by recent research in software engineering, and the range of possibilities it opens for instructional research and practice in the 21st century. Starting with fundamental precepts of…

  15. Structural Learning Theory: Current Status and New Perspectives.

    ERIC Educational Resources Information Center

    Scandura, Joseph M.

    2001-01-01

    Presents the current status and new perspectives on the Structured Learning Theory (SLT), with special consideration given to how SLT has been influenced by recent research in software engineering. Topics include theoretical constructs; content domains; structural analysis; cognition; assessing behavior potential; and teaching and learning issues,…

  16. Academic advising from a nursing theory perspective.

    PubMed

    Schultz, E D

    1998-01-01

    Academic advising is an important faculty role; it not only assists students in selecting appropriate courses, but it also helps them make choices about personal and career goals. Using a theoretical framework to guide the advising process can make advising sessions more efficient and effective. One nursing theory, modeling and role-modeling, is presented here as a framework for student advising. Modeling and role-modeling theory can guide the advisor to establish a caring interpersonal relationship with the student and plan individualized strategies to meet educational goals.

  17. Using Activity Theory to Model the Taiwan Atayal Students' Classroom Mathematical Activity

    ERIC Educational Resources Information Center

    Huang, Chih-Hsien; Lin, Fou-Lai

    2013-01-01

    From the sociocultural perspective, this research utilized activity theory as the theoretical framework to analyze the influences of cultural factors for Taiwanese Atayal junior high school students' study in mathematics. The research methodology adopted grounded theory, theoretical and methodological approaches which are illustrated through…

  18. Concerning interpretations of activity theory.

    PubMed

    Mironenko, Irina A

    2013-09-01

    Activity theory (AT) is the most recognised part of Russian psychology outside Russia. However the general view of AT in international science is rather unilateral, lacking substantial aspects and areas necessary for proper understanding. This article is aimed at expanding the image of AT dominant in the mainstream which reduces the AT trend to A.N. Leontiev's theory. This reduction impoverishes the creative potentialities of the trend, and decreases the ability of AT to contribute to international science. We aim to reveal that AT is not limited to Leontiev's approach, to explain which ideas of the founders of AT, S.L. Rubinstein and L.S. Vygotsky, were pursued and which were rejected by A.N. Leontiev, and to assess another important contribution to the AT trend - the theory of B.G. Ananiev, where the ideas of AT's founders were developed which were not succeeded by A.N. Leontiev. Historical causes and consequences of the general reduction of the image of AT in the mainstream to Leontiev's theory are considered: why the discrepancies between views of Rubinstein, Vygotsky and Leontiev were hardly ever discussed in public and why other theories contemporary to Leontiev's theory were never given account appropriate to their value in Russia and remain almost unknown abroad.

  19. Contemporary perspectives on Lacanian theories of psychosis

    PubMed Central

    Redmond, Jonathan D.

    2013-01-01

    In contemporary Lacanian psychoanalysis, Verhaeghe's theory of actualpathology psychopathology in psychosis and the Millerian idea of “ordinary psychosis” provide diverging conceptual approaches to psychosis. In this paper, the two approaches to psychosis are examined with a particular emphasis on “mild psychosis” and compensatory mechanisms. Despite the shared focus on similar clinical phenomena, particularly body disturbances, these two theories provide different explanations of psychosis. Verhaeghe's theory of psychosis is a synthesis of Lacanian theory, Freud's idea of actual neurosis and psychoanalytic attachment concepts. Moreover, these ideas are situated in the “schizophrenia/paranoia dichotomy” an important heuristic device utilized in clinical practice with psychosis. In contrast, the Millerian field of ordinary psychosis aims to broaden the idea of psychosis by reviving the idea of “mild psychosis” and the different forms of stabilization possible in psychosis. Clinicians adapting the idea of ordinary psychosis aim to rethink pivotal Lacanian concepts—“untriggered” psychosis and stabilization—beyond the scope of the schizophrenia/paranoia dichotomy. Although the idea of ordinary psychosis requires further development, it promise greater utility than Verhaeghe's model, as it provides a broader and more nuanced approach to the complex vicissitudes of triggering and restitution in psychosis. PMID:23825465

  20. Understanding Feedback: A Learning Theory Perspective

    ERIC Educational Resources Information Center

    Thurlings, Marieke; Vermeulen, Marjan; Bastiaens, Theo; Stijnen, Sjef

    2013-01-01

    This article aims to review literature on feedback to teachers. Because research has hardly focused on feedback among teachers, the review's scope also includes feedback in classrooms. The review proposes that the effectiveness of feedback and feedback processes depend on the learning theory adhered to. Findings show that regardless of the…

  1. The Theory of Evolution - A Jewish Perspective

    PubMed Central

    Steinberg, Avraham

    2010-01-01

    All possible pro and con arguments regarding the theory of evolution have been discussed and debated in the vast literature—scientific, religious, and lay—in the past 150 years. There is usually great zealotry in all debating parties, with mutual intolerance of ideas and concepts, disrespect toward opposing opinions and positions, and usage of very harsh language. This prejudiced approach usually does not allow for a reasonable debate. It is important to look at the facts, assumptions, and beliefs of the theory of evolution in a more calm and humble way. In this article a comparative analysis is offered between the scientific aspects of the theory of evolution and a Judaic approach to these aspects. The two sets of human thought—religion and science—are fundamentally different in their aims and purposes, in their methods of operation, in their scope of interest and issues, and in their origin and ramifications. Whenever science surpasses its limits, or religion exceeds its boundaries, it actually is a form of an abuse of both. This has happened to the theory of evolution in a more powerful mode than any other interaction between science and religion. The agenda of many scientists who promote the theory of evolution is to achieve the goal of understanding the existence of the universe as a random, purposeless, natural development, evolved slowly over billions of years from a common ancestor by way of natural selection, devoid of any supernatural metaphysical power. Jewish faith perceives the development of the universe in a different way: God created the world, with a purpose known to Him; He established natural laws that govern the world; and He imposed a moral-religious set of requirements upon Man. The discussion and comparative analysis in this article is based upon the current neo-Darwinian theory, although it seems almost certain that even the new and modern assumptions and speculations will continue to be challenged, changed, and revised as new

  2. The theory of evolution - a jewish perspective.

    PubMed

    Steinberg, Avraham

    2010-07-01

    All possible pro and con arguments regarding the theory of evolution have been discussed and debated in the vast literature-scientific, religious, and lay-in the past 150 years. There is usually great zealotry in all debating parties, with mutual intolerance of ideas and concepts, disrespect toward opposing opinions and positions, and usage of very harsh language. This prejudiced approach usually does not allow for a reasonable debate. It is important to look at the facts, assumptions, and beliefs of the theory of evolution in a more calm and humble way. In this article a comparative analysis is offered between the scientific aspects of the theory of evolution and a Judaic approach to these aspects. The two sets of human thought-religion and science-are fundamentally different in their aims and purposes, in their methods of operation, in their scope of interest and issues, and in their origin and ramifications. Whenever science surpasses its limits, or religion exceeds its boundaries, it actually is a form of an abuse of both. This has happened to the theory of evolution in a more powerful mode than any other interaction between science and religion. The agenda of many scientists who promote the theory of evolution is to achieve the goal of understanding the existence of the universe as a random, purposeless, natural development, evolved slowly over billions of years from a common ancestor by way of natural selection, devoid of any supernatural metaphysical power. JEWISH FAITH PERCEIVES THE DEVELOPMENT OF THE UNIVERSE IN A DIFFERENT WAY: God created the world, with a purpose known to Him; He established natural laws that govern the world; and He imposed a moral-religious set of requirements upon Man. The discussion and comparative analysis in this article is based upon the current neo-Darwinian theory, although it seems almost certain that even the new and modern assumptions and speculations will continue to be challenged, changed, and revised as new scientific

  3. Functional lateralization of temporoparietal junction - imitation inhibition, visual perspective-taking and theory of mind.

    PubMed

    Santiesteban, Idalmis; Banissy, Michael J; Catmur, Caroline; Bird, Geoffrey

    2015-10-01

    Although neuroimaging studies have consistently identified the temporoparietal junction (TPJ) as a key brain region involved in social cognition, the literature is far from consistent with respect to lateralization of function. For example, during theory-of-mind tasks bilateral TPJ activation is found in some studies but only right hemisphere activation in others. Visual perspective-taking and imitation inhibition, which have been argued to recruit the same socio-cognitive processes as theory of mind, are associated with unilateral activation of either left TPJ (perspective taking) or right TPJ (imitation inhibition). The present study investigated the functional lateralization of TPJ involvement in the above three socio-cognitive abilities using transcranial direct current stimulation. Three groups of healthy adults received anodal stimulation over right TPJ, left TPJ or the occipital cortex prior to performing three tasks (imitation inhibition, visual perspective-taking and theory of mind). In contrast to the extant neuroimaging literature, our results suggest bilateral TPJ involvement in imitation inhibition and visual perspective-taking, while no effect of anodal stimulation was observed on theory of mind. The discrepancy between these findings and those obtained using neuroimaging highlight the efficacy of neurostimulation as a complementary methodological tool in cognitive neuroscience.

  4. Perspective: Fundamental aspects of time-dependent density functional theory

    NASA Astrophysics Data System (ADS)

    Maitra, Neepa T.

    2016-06-01

    In the thirty-two years since the birth of the foundational theorems, time-dependent density functional theory has had a tremendous impact on calculations of electronic spectra and dynamics in chemistry, biology, solid-state physics, and materials science. Alongside the wide-ranging applications, there has been much progress in understanding fundamental aspects of the functionals and the theory itself. This Perspective looks back to some of these developments, reports on some recent progress and current challenges for functionals, and speculates on future directions to improve the accuracy of approximations used in this relatively young theory.

  5. Resilience definitions, theory, and challenges: interdisciplinary perspectives

    PubMed Central

    Southwick, Steven M.; Bonanno, George A.; Masten, Ann S.; Panter-Brick, Catherine; Yehuda, Rachel

    2014-01-01

    In this paper, inspired by the plenary panel at the 2013 meeting of the International Society for Traumatic Stress Studies, Dr. Steven Southwick (chair) and multidisciplinary panelists Drs. George Bonanno, Ann Masten, Catherine Panter-Brick, and Rachel Yehuda tackle some of the most pressing current questions in the field of resilience research including: (1) how do we define resilience, (2) what are the most important determinants of resilience, (3) how are new technologies informing the science of resilience, and (4) what are the most effective ways to enhance resilience? These multidisciplinary experts provide insight into these difficult questions, and although each of the panelists had a slightly different definition of resilience, most of the proposed definitions included a concept of healthy, adaptive, or integrated positive functioning over the passage of time in the aftermath of adversity. The panelists agreed that resilience is a complex construct and it may be defined differently in the context of individuals, families, organizations, societies, and cultures. With regard to the determinants of resilience, there was a consensus that the empirical study of this construct needs to be approached from a multiple level of analysis perspective that includes genetic, epigenetic, developmental, demographic, cultural, economic, and social variables. The empirical study of determinates of resilience will inform efforts made at fostering resilience, with the recognition that resilience may be enhanced on numerous levels (e.g., individual, family, community, culture). PMID:25317257

  6. Active Learning: Historical and Contemporary Perspectives.

    ERIC Educational Resources Information Center

    Page, Marilyn

    The purposes of the first two parts of this literature review are to clarify the concept of active learning and discuss the use and value of active learning models. In Part I, the perspectives of five historical proponents of active learning, Rousseau, Pestalozzi, Dewey, Kilpatrick, and Piaget, are discussed. The views of four contemporary…

  7. Social cognitive theory: an agentic perspective.

    PubMed

    Bandura, A

    2001-01-01

    The capacity to exercise control over the nature and quality of one's life is the essence of humanness. Human agency is characterized by a number of core features that operate through phenomenal and functional consciousness. These include the temporal extension of agency through intentionality and forethought, self-regulation by self-reactive influence, and self-reflectiveness about one's capabilities, quality of functioning, and the meaning and purpose of one's life pursuits. Personal agency operates within a broad network of sociostructural influences. In these agentic transactions, people are producers as well as products of social systems. Social cognitive theory distinguishes among three modes of agency: direct personal agency, proxy agency that relies on others to act on one's behest to secure desired outcomes, and collective agency exercised through socially coordinative and interdependent effort. Growing transnational embeddedness and interdependence are placing a premium on collective efficacy to exercise control over personal destinies and national life.

  8. Clarifying the role of theory of mind areas during visual perspective taking: Issues of spontaneity and domain-specificity.

    PubMed

    Schurz, Matthias; Kronbichler, Martin; Weissengruber, Sebastian; Surtees, Andrew; Samson, Dana; Perner, Josef

    2015-08-15

    Visual perspective taking is a fundamental feature of the human social brain. Previous research has mainly focused on explicit visual perspective taking and contrasted brain activation for other- versus self-perspective judgements. This produced a conceptual gap to theory of mind studies, where researchers mainly compared activation for taking another's mental perspective to non-mental control conditions. We compared brain activation for visual perspective taking to activation for non-mental control conditions where the avatar was replaced by directional (arrow, lamp) or non-directional (brick-wall) objects. We found domain-specific activation linked to the avatar's visual perspective in right TPJ, ventral mPFC and ventral precuneus. Interestingly, we found that these areas are spontaneously processing information linked to the other's perspective during self-perspective judgements. Based on a review of the visual perspective taking literature, we discuss how these findings can explain some of the inconsistent/negative results found in previous studies comparing other- versus self-perspective judgements.

  9. U.S.-Vietnam Military Relations: Game Theory Perspective

    DTIC Science & Technology

    2012-06-01

    Thesis 4. TITLE AND SUBTITLE U.S.-Vietnam Military Relations: Game Theory Perspective 5. FUNDING NUMBERS 6. AUTHOR( S ) Ngan M. Kim 7. PERFORMING...ORGANIZATION NAME( S ) AND ADDRESS(ES) Naval Postgraduate School Monterey, CA 93943-5000 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING...MONITORING AGENCY NAME( S ) AND ADDRESS(ES) N/A 10. SPONSORING/MONITORING AGENCY REPORT NUMBER 11. SUPPLEMENTARY NOTES The views expressed in

  10. Learning theories and assessment methodologies - an engineering educational perspective

    NASA Astrophysics Data System (ADS)

    Hassan, O. A. B.

    2011-08-01

    This paper attempts to critically review theories of learning from the perspective of engineering education in order to align relevant assessment methods with each respective learning theory, considering theoretical aspects and practical observations and reflections. The role of formative assessment, taxonomies, peer learning and educational policy as regards promoting the learning of engineering is discussed. It is suggested that an integrated learning method in which cognitive levels, social factors and teamwork and behaviouristic elements are integrated will optimise the learning process on an engineering course. Moreover, assessment of learning should not be isolated from views of teaching and the learning methods employed by the university teacher.

  11. What propels sexual murderers: a proposed integrated theory of social learning and routine activities theories.

    PubMed

    Chan, Heng Choon Oliver; Heide, Kathleen M; Beauregard, Eric

    2011-04-01

    Despite the great interest in the study of sexual homicide, little is known about the processes involved in an individual's becoming motivated to sexually kill, deciding to sexually kill, and acting on that desire, intention, and opportunity. To date, no comprehensive model of sexual murdering from the offending perspective has been proposed in the criminological literature. This article incorporates the works of Akers and Cohen and Felson regarding their social learning theory and routine activities theory, respectively, to construct an integrated conceptual offending framework in sexual homicide. This integrated model produces a stronger and more comprehensive explanation of sexual murder than any single theory currently available.

  12. Evidence Combination From an Evolutionary Game Theory Perspective.

    PubMed

    Deng, Xinyang; Han, Deqiang; Dezert, Jean; Deng, Yong; Shyr, Yu

    2016-09-01

    Dempster-Shafer evidence theory is a primary methodology for multisource information fusion because it is good at dealing with uncertain information. This theory provides a Dempster's rule of combination to synthesize multiple evidences from various information sources. However, in some cases, counter-intuitive results may be obtained based on that combination rule. Numerous new or improved methods have been proposed to suppress these counter-intuitive results based on perspectives, such as minimizing the information loss or deviation. Inspired by evolutionary game theory, this paper considers a biological and evolutionary perspective to study the combination of evidences. An evolutionary combination rule (ECR) is proposed to help find the most biologically supported proposition in a multievidence system. Within the proposed ECR, we develop a Jaccard matrix game to formalize the interaction between propositions in evidences, and utilize the replicator dynamics to mimick the evolution of propositions. Experimental results show that the proposed ECR can effectively suppress the counter-intuitive behaviors appeared in typical paradoxes of evidence theory, compared with many existing methods. Properties of the ECR, such as solution's stability and convergence, have been mathematically proved as well.

  13. Manager-physician relationships: an organizational theory perspective.

    PubMed

    Kaissi, Amer

    2005-01-01

    Manager-physician relationships are a critical determinant of the success of health care organizations. As the health care industry is moving toward a situation characterized by higher scarcity of resources, fiercer competition, more corporitization, and strict cost-containment approaches, managers and physicians should, more than ever, work together under conjoint or shared authority. Thus, their relationship can be described as one of high rewards, but also of high risk because of the wide range of differences that exist between them: different socializations and trainings resulting in different worldviews, value orientation and expectations and different cultures. In brief, managers and physicians represent different "tribes," each with its language, values, culture, thought patterns, and rules of the game. This article's main objective is to determine the underlying factors in the manager-physician relationship and to suggest ways that make this relationship more effective. Four different organizational perspectives will be used. The occupational perspective will give insights on the internal characteristics of the occupational communities of managers and physicians. The theory of deprofessionalization of physicians will also be discussed. The structuring perspective will look at the manager-physician relationship as a structure in the organization and will determine the effects of contextual factors (size, task uncertainty, strategy, and environment) on this relationship and the resulting effect on performance and effectiveness of the organization. The culture and control perspective will help detect the cultural differences between managers and physicians and how these interact to affect control over the decision-making areas in the hospital. The power, conflict, and dialectics perspective will shed the light on the conflicting interests of managers and physicians and how these shape the "power game" in the organization. Consequently, a theoretical model of

  14. First-person perspective effects on theory of mind without self-reference.

    PubMed

    Otsuka, Yuki; Osaka, Naoyuki; Yaoi, Ken; Osaka, Mariko

    2011-04-29

    This study examined dissociations between brain networks involved in theory of mind, which is needed for guessing others' mental states, and the self, which might constitute the basis for theory of mind's development. We used event-related fMRI to compare a condition that required participants to guess the mental state of a subject featured in first-person perspective sentences (1stPP condition) with a third-person perspective sentence condition (3rdPP condition). The caudate nucleus was marginally more activated in the 1stPP than in the 3rdPP condition, while the left dorsolateral prefrontal cortex (DLPFC) was significantly more activated in the 3rdPP condition as compared to the 1stPP condition. Furthermore, we examined the correlation between activation (signal intensity) of the caudate nucleus and left DLPFC with that of the right DLPFC, which is thought to be closely connected with sense of self. We found a significant correlation between caudate nucleus and right DLPFC activation in the 1stPP condition, and between left and right DLPFC activation in the 3rdPP condition. Although theory of mind and the self both appear to recruit the right DLPFC, this region seems to be accessed through the left DLPFC during theory of mind tasks, but through the caudate nucleus when tasks require self reference.

  15. Emerging Vocabulary Learning: From a Perspective of Activities Facilitated by Mobile Devices

    ERIC Educational Resources Information Center

    Hu, Zengning

    2013-01-01

    This paper examines the current mobile vocabulary learning practice to discover how far mobile devices are being used to support vocabulary learning. An activity-centered perspective is undertaken, with the consideration of new practice against existing theories of learning activities including behaviorist activities, constructivist activities,…

  16. Active Inference: A Process Theory.

    PubMed

    Friston, Karl; FitzGerald, Thomas; Rigoli, Francesco; Schwartenbeck, Philipp; Pezzulo, Giovanni

    2017-01-01

    This article describes a process theory based on active inference and belief propagation. Starting from the premise that all neuronal processing (and action selection) can be explained by maximizing Bayesian model evidence-or minimizing variational free energy-we ask whether neuronal responses can be described as a gradient descent on variational free energy. Using a standard (Markov decision process) generative model, we derive the neuronal dynamics implicit in this description and reproduce a remarkable range of well-characterized neuronal phenomena. These include repetition suppression, mismatch negativity, violation responses, place-cell activity, phase precession, theta sequences, theta-gamma coupling, evidence accumulation, race-to-bound dynamics, and transfer of dopamine responses. Furthermore, the (approximately Bayes' optimal) behavior prescribed by these dynamics has a degree of face validity, providing a formal explanation for reward seeking, context learning, and epistemic foraging. Technically, the fact that a gradient descent appears to be a valid description of neuronal activity means that variational free energy is a Lyapunov function for neuronal dynamics, which therefore conform to Hamilton's principle of least action.

  17. Combinatorial neural codes from a mathematical coding theory perspective.

    PubMed

    Curto, Carina; Itskov, Vladimir; Morrison, Katherine; Roth, Zachary; Walker, Judy L

    2013-07-01

    Shannon's seminal 1948 work gave rise to two distinct areas of research: information theory and mathematical coding theory. While information theory has had a strong influence on theoretical neuroscience, ideas from mathematical coding theory have received considerably less attention. Here we take a new look at combinatorial neural codes from a mathematical coding theory perspective, examining the error correction capabilities of familiar receptive field codes (RF codes). We find, perhaps surprisingly, that the high levels of redundancy present in these codes do not support accurate error correction, although the error-correcting performance of receptive field codes catches up to that of random comparison codes when a small tolerance to error is introduced. However, receptive field codes are good at reflecting distances between represented stimuli, while the random comparison codes are not. We suggest that a compromise in error-correcting capability may be a necessary price to pay for a neural code whose structure serves not only error correction, but must also reflect relationships between stimuli.

  18. Perspective: Explicitly correlated electronic structure theory for complex systems

    NASA Astrophysics Data System (ADS)

    Grüneis, Andreas; Hirata, So; Ohnishi, Yu-ya; Ten-no, Seiichiro

    2017-02-01

    The explicitly correlated approach is one of the most important breakthroughs in ab initio electronic structure theory, providing arguably the most compact, accurate, and efficient ansatz for describing the correlated motion of electrons. Since Hylleraas first used an explicitly correlated wave function for the He atom in 1929, numerous attempts have been made to tackle the significant challenges involved in constructing practical explicitly correlated methods that are applicable to larger systems. These include identifying suitable mathematical forms of a correlated wave function and an efficient evaluation of many-electron integrals. R12 theory, which employs the resolution of the identity approximation, emerged in 1985, followed by the introduction of novel correlation factors and wave function ansätze, leading to the establishment of F12 theory in the 2000s. Rapid progress in recent years has significantly extended the application range of explicitly correlated theory, offering the potential of an accurate wave-function treatment of complex systems such as photosystems and semiconductors. This perspective surveys explicitly correlated electronic structure theory, with an emphasis on recent stochastic and deterministic approaches that hold significant promise for applications to large and complex systems including solids.

  19. Health as expanding consciousness: a nursing perspective for grounded theory research.

    PubMed

    Brown, Janet Witucki

    2011-07-01

    Margaret Newman's theory of health as expanding consciousness provides an excellent nursing perspective for nursing grounded theory research studies. Application of this nursing theory to grounded theory research provides a unitary-transformative paradigm perspective to the sociological underpinnings of grounded theory methodology. The fit between this particular nursing theory and grounded theory methodology is apparent when purpose, timing, process, and health outcomes of the two are compared. In this column, the theory of health as expanding consciousness is described and the theory's research as praxis methodology is compared to grounded theory methodology. This is followed by a description of how the theory of health as expanding consciousness can be utilized as a perspective for nursing grounded theory research.

  20. Psychology and social networks: a dynamic network theory perspective.

    PubMed

    Westaby, James D; Pfaff, Danielle L; Redding, Nicholas

    2014-04-01

    Research on social networks has grown exponentially in recent years. However, despite its relevance, the field of psychology has been relatively slow to explain the underlying goal pursuit and resistance processes influencing social networks in the first place. In this vein, this article aims to demonstrate how a dynamic network theory perspective explains the way in which social networks influence these processes and related outcomes, such as goal achievement, performance, learning, and emotional contagion at the interpersonal level of analysis. The theory integrates goal pursuit, motivation, and conflict conceptualizations from psychology with social network concepts from sociology and organizational science to provide a taxonomy of social network role behaviors, such as goal striving, system supporting, goal preventing, system negating, and observing. This theoretical perspective provides psychologists with new tools to map social networks (e.g., dynamic network charts), which can help inform the development of change interventions. Implications for social, industrial-organizational, and counseling psychology as well as conflict resolution are discussed, and new opportunities for research are highlighted, such as those related to dynamic network intelligence (also known as cognitive accuracy), levels of analysis, methodological/ethical issues, and the need to theoretically broaden the study of social networking and social media behavior. (PsycINFO Database Record (c) 2014 APA, all rights reserved).

  1. Dynamical mean-field theory from a quantum chemical perspective.

    PubMed

    Zgid, Dominika; Chan, Garnet Kin-Lic

    2011-03-07

    We investigate the dynamical mean-field theory (DMFT) from a quantum chemical perspective. Dynamical mean-field theory offers a formalism to extend quantum chemical methods for finite systems to infinite periodic problems within a local correlation approximation. In addition, quantum chemical techniques can be used to construct new ab initio Hamiltonians and impurity solvers for DMFT. Here, we explore some ways in which these things may be achieved. First, we present an informal overview of dynamical mean-field theory to connect to quantum chemical language. Next, we describe an implementation of dynamical mean-field theory where we start from an ab initio Hartree-Fock Hamiltonian that avoids double counting issues present in many applications of DMFT. We then explore the use of the configuration interaction hierarchy in DMFT as an approximate solver for the impurity problem. We also investigate some numerical issues of convergence within DMFT. Our studies are carried out in the context of the cubic hydrogen model, a simple but challenging test for correlation methods. Finally, we finish with some conclusions for future directions.

  2. Left inferior-parietal lobe activity in perspective tasks: identity statements.

    PubMed

    Arora, Aditi; Weiss, Benjamin; Schurz, Matthias; Aichhorn, Markus; Wieshofer, Rebecca C; Perner, Josef

    2015-01-01

    We investigate the theory that the left inferior parietal lobe (IPL) is closely associated with tracking potential differences of perspective. Developmental studies find that perspective tasks are mastered at around 4 years of age. Our first study, meta-analyses of brain imaging studies shows that perspective tasks specifically activate a region in the left IPL and precuneus. These tasks include processing of false belief, visual perspective, and episodic memory. We test the location specificity theory in our second study with an unusual and novel kind of perspective task: identity statements. According to Frege's classical logical analysis, identity statements require appreciation of modes of presentation (perspectives). We show that identity statements, e.g., "the tour guide is also the driver" activate the left IPL in contrast to a control statements, "the tour guide has an apprentice." This activation overlaps with the activations found in the meta-analysis. This finding is confirmed in a third study with different types of statements and different comparisons. All studies support the theory that the left IPL has as one of its overarching functions the tracking of perspective differences. We discuss how this function relates to the bottom-up attention function proposed for the bilateral IPL.

  3. Time Perspective and Physical Activity among Central Appalachian Adolescents

    ERIC Educational Resources Information Center

    Gulley, Tauna

    2013-01-01

    Time perspective is a cultural behavioral concept that reflects individuals' orientations or attitudes toward the past, present, or future. Individuals' time perspectives influence their choices regarding daily activities. Time perspective is an important consideration when teaching adolescents about the importance of being physically active.…

  4. Perspective: Kohn-Sham density functional theory descending a staircase

    NASA Astrophysics Data System (ADS)

    Yu, Haoyu S.; Li, Shaohong L.; Truhlar, Donald G.

    2016-10-01

    This article presents a perspective on Kohn-Sham density functional theory (KS-DFT) for electronic structure calculations in chemical physics. This theory is in widespread use for applications to both molecules and solids. We pay special attention to several aspects where there are both concerns and progress toward solutions. These include: 1. The treatment of open-shell and inherently multiconfigurational systems (the latter are often called multireference systems and are variously classified as having strong correlation, near-degeneracy correlation, or high static correlation; KS-DFT must treat these systems with broken-symmetry determinants). 2. The treatment of noncovalent interactions. 3. The choice between developing new functionals by parametrization, by theoretical constraints, or by a combination. 4. The ingredients of the exchange-correlation functionals used by KS-DFT, including spin densities, the magnitudes of their gradients, spin-specific kinetic energy densities, nonlocal exchange (Hartree-Fock exchange), nonlocal correlation, and subshell-dependent corrections (DFT+U). 5. The quest for a universal functional, where we summarize some of the success of the latest Minnesota functionals, namely MN15-L and MN15, which were obtained by optimization against diverse databases. 6. Time-dependent density functional theory, which is an extension of DFT to treat time-dependent problems and excited states. The review is a snapshot of a rapidly moving field, and—like Marcel Duchamp—we hope to convey progress in a stimulating way.

  5. Perspective: Kohn-Sham density functional theory descending a staircase.

    PubMed

    Yu, Haoyu S; Li, Shaohong L; Truhlar, Donald G

    2016-10-07

    This article presents a perspective on Kohn-Sham density functional theory (KS-DFT) for electronic structure calculations in chemical physics. This theory is in widespread use for applications to both molecules and solids. We pay special attention to several aspects where there are both concerns and progress toward solutions. These include: 1. The treatment of open-shell and inherently multiconfigurational systems (the latter are often called multireference systems and are variously classified as having strong correlation, near-degeneracy correlation, or high static correlation; KS-DFT must treat these systems with broken-symmetry determinants). 2. The treatment of noncovalent interactions. 3. The choice between developing new functionals by parametrization, by theoretical constraints, or by a combination. 4. The ingredients of the exchange-correlation functionals used by KS-DFT, including spin densities, the magnitudes of their gradients, spin-specific kinetic energy densities, nonlocal exchange (Hartree-Fock exchange), nonlocal correlation, and subshell-dependent corrections (DFT+U). 5. The quest for a universal functional, where we summarize some of the success of the latest Minnesota functionals, namely MN15-L and MN15, which were obtained by optimization against diverse databases. 6. Time-dependent density functional theory, which is an extension of DFT to treat time-dependent problems and excited states. The review is a snapshot of a rapidly moving field, and-like Marcel Duchamp-we hope to convey progress in a stimulating way.

  6. Extending Organizational Contingency Theory to Team Performance - An Information Processing and Knowledge Flows Perspective

    DTIC Science & Technology

    2007-09-01

    ORGANIZATIONAL CONTINGENCY THEORY TO TEAM PERFORMANCE – AN INFORMATION PROCESSING AND KNOWLEDGE FLOWS PERSPECTIVE by Tara A. Leweling...Contingency Theory to Team Performance – An Information Processing and Knowledge Flows Perspective 6. AUTHOR(S): Tara A. Leweling 5. FUNDING NUMBERS 7...contingency framework, I suggest that the intersection of the information processing structures and the contigent influence of knowledge sharing is an

  7. QCD and strongly coupled gauge theories: Challenges and perspectives

    SciTech Connect

    Brambilla, N.; Eidelman, S.; Foka, P.; Gardner, S.; Kronfeld, A. S.; Alford, M. G.; Alkofer, R.; Butenschoen, M.; Cohen, T. D.; Erdmenger, J.; Fabbietti, L.; Faber, M.; Goity, J. L.; Ketzer, B.; Lin, H. W.; Llanes-Estrada, F. J.; Meyer, H. B.; Pakhlov, P.; Pallante, E.; Polikarpov, M. I.; Sazdjian, H.; Schmitt, A.; Snow, W. M.; Vairo, A.; Vogt, R.; Vuorinen, A.; Wittig, H.; Arnold, P.; Christakoglou, P.; Di Nezza, P.; Fodor, Z.; Garcia i Tormo, X.; Höllwieser, R.; Janik, M. A.; Kalweit, A.; Keane, D.; Kiritsis, E.; Mischke, A.; Mizuk, R.; Odyniec, G.; Papadodimas, K.; Pich, A.; Pittau, R.; Qiu, J. -W.; Ricciardi, G.; Salgado, C. A.; Schwenzer, K.; Stefanis, N. G.; von Hippel, G. M.; Zakharov, V. I.

    2014-10-21

    We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to stongly-coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.

  8. QCD and strongly coupled gauge theories: Challenges and perspectives

    DOE PAGES

    Brambilla, N.; Eidelman, S.; Foka, P.; ...

    2014-10-21

    We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to stongly-coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many researchmore » streams which flow into and out of QCD, as well as a vision for future developments.« less

  9. QCD and strongly coupled gauge theories: challenges and perspectives.

    PubMed

    Brambilla, N; Eidelman, S; Foka, P; Gardner, S; Kronfeld, A S; Alford, M G; Alkofer, R; Butenschoen, M; Cohen, T D; Erdmenger, J; Fabbietti, L; Faber, M; Goity, J L; Ketzer, B; Lin, H W; Llanes-Estrada, F J; Meyer, H B; Pakhlov, P; Pallante, E; Polikarpov, M I; Sazdjian, H; Schmitt, A; Snow, W M; Vairo, A; Vogt, R; Vuorinen, A; Wittig, H; Arnold, P; Christakoglou, P; Di Nezza, P; Fodor, Z; Garcia I Tormo, X; Höllwieser, R; Janik, M A; Kalweit, A; Keane, D; Kiritsis, E; Mischke, A; Mizuk, R; Odyniec, G; Papadodimas, K; Pich, A; Pittau, R; Qiu, J-W; Ricciardi, G; Salgado, C A; Schwenzer, K; Stefanis, N G; von Hippel, G M; Zakharov, V I

    We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.

  10. Perspectives on the Contribution of Social Science to Adapted Physical Activity: Looking Forward, Looking Back

    ERIC Educational Resources Information Center

    Causgrove Dunn, Janice; Cairney, John; Zimmer, Chantelle

    2016-01-01

    In this article, we reflect on the contributions of the social sciences to the field of adapted physical activity by examining the theories and methods that have been adopted from the social science disciplines. To broaden our perspective on adapted physical activity and provide new avenues for theoretical and empirical exploration, we discuss and…

  11. An Activity Theory Approach to Analyze Barriers to a Virtual Management Information Systems (MIS) Curriculum

    ERIC Educational Resources Information Center

    Jaradat, Suhair; Qablan, Ahmad; Barham, Areej

    2011-01-01

    This paper explains how the activity theory is used as a framework to analyze the barriers to a virtual Management Information Stream (MIS) Curriculum in Jordanian schools, from both the sociocultural and pedagogical perspectives. Taking the activity system as a unit of analysis, this study documents the processes by which activities shape and are…

  12. A Short Account of RRKM Theory of Unimolecular Reactions and of Marcus Theory of Electron Transfer in a Historical Perspective

    ERIC Educational Resources Information Center

    Di Giacomo, Francesco

    2015-01-01

    The RRKM Theory of Unimolecular Reactions and Marcus Theory of Electron Transfer are here briefly discussed in a historical perspective. In the final section, after a general discussion on the educational usefulness of teaching chemistry in a historical framework, hints are given on how some characteristics of Marcus' work could be introduced in…

  13. Comparing Educational Tools Using Activity Theory: Clickers and Flashcards

    NASA Astrophysics Data System (ADS)

    Price, Edward; De Leone, Charles; Lasry, Nathaniel

    2010-10-01

    Physics educators and researchers have recently begun to distinguish between pedagogical approaches and the educational technologies that are used to implement them. For instance, peer instruction has been shown to be equally effective, in terms of student learning outcomes, when implemented with clickers or flashcards. Therefore, technological tools (clickers and flashcards) can be viewed as means to mediate pedagogical techniques (peer instruction or traditional instruction). In this paper, we use activity theory to examine peer instruction, with particular attention to the role of tools. This perspective helps clarify clickers' and flashcards' differences, similarities, impacts in the classroom, and utility to education researchers. Our analysis can suggest improvements and new uses. Finally, we propose activity theory as a useful approach in understanding and improving the use of technology in the physics classroom.

  14. Pattern activation/recognition theory of mind

    PubMed Central

    du Castel, Bertrand

    2015-01-01

    In his 2012 book How to Create a Mind, Ray Kurzweil defines a “Pattern Recognition Theory of Mind” that states that the brain uses millions of pattern recognizers, plus modules to check, organize, and augment them. In this article, I further the theory to go beyond pattern recognition and include also pattern activation, thus encompassing both sensory and motor functions. In addition, I treat checking, organizing, and augmentation as patterns of patterns instead of separate modules, therefore handling them the same as patterns in general. Henceforth I put forward a unified theory I call “Pattern Activation/Recognition Theory of Mind.” While the original theory was based on hierarchical hidden Markov models, this evolution is based on their precursor: stochastic grammars. I demonstrate that a class of self-describing stochastic grammars allows for unifying pattern activation, recognition, organization, consistency checking, metaphor, and learning, into a single theory that expresses patterns throughout. I have implemented the model as a probabilistic programming language specialized in activation/recognition grammatical and neural operations. I use this prototype to compute and present diagrams for each stochastic grammar and corresponding neural circuit. I then discuss the theory as it relates to artificial network developments, common coding, neural reuse, and unity of mind, concluding by proposing potential paths to validation. PMID:26236228

  15. Pattern activation/recognition theory of mind.

    PubMed

    du Castel, Bertrand

    2015-01-01

    In his 2012 book How to Create a Mind, Ray Kurzweil defines a "Pattern Recognition Theory of Mind" that states that the brain uses millions of pattern recognizers, plus modules to check, organize, and augment them. In this article, I further the theory to go beyond pattern recognition and include also pattern activation, thus encompassing both sensory and motor functions. In addition, I treat checking, organizing, and augmentation as patterns of patterns instead of separate modules, therefore handling them the same as patterns in general. Henceforth I put forward a unified theory I call "Pattern Activation/Recognition Theory of Mind." While the original theory was based on hierarchical hidden Markov models, this evolution is based on their precursor: stochastic grammars. I demonstrate that a class of self-describing stochastic grammars allows for unifying pattern activation, recognition, organization, consistency checking, metaphor, and learning, into a single theory that expresses patterns throughout. I have implemented the model as a probabilistic programming language specialized in activation/recognition grammatical and neural operations. I use this prototype to compute and present diagrams for each stochastic grammar and corresponding neural circuit. I then discuss the theory as it relates to artificial network developments, common coding, neural reuse, and unity of mind, concluding by proposing potential paths to validation.

  16. Resolving defence mechanisms: A perspective based on dissipative structure theory.

    PubMed

    Zhang, Wei; Guo, Ben-Yu

    2017-04-01

    Theories and classifications of defence mechanisms are not unified. This study addresses the psychological system as a dissipative structure which exchanges information with the external and internal world. When using defence mechanisms, the cognitive-affective schema of an individual could remain stable and ordered by excluding psychological entropy, obtaining psychological negentropy or by dissipating the energy of self-presentation. From this perspective, defences can be classified into three basic types: isolation, compensation and self-dissipation. However, not every kind of defence mechanisms can actually help the individual. Non-adaptive defences are just functioning as an effective strategy in the short run but can be a harmful approach in the long run, while adaptive defences could instead help the individual as a long-term mechanism. Thus, we would like to suggest that it is more useful for the individual to use more adaptive defence mechanisms and seek out social or interpersonal support when undergoing psychic difficulties. As this model of defences is theoretical at present, we therefore aim to support and enrich this viewpoint with empirical evidence.

  17. Textbook Questions in Context-Based and Traditional Chemistry Curricula Analysed from a Content Perspective and a Learning Activities Perspective

    NASA Astrophysics Data System (ADS)

    Overman, Michelle; Vermunt, Jan D.; Meijer, Paulien C.; Bulte, Astrid M. W.; Brekelmans, Mieke

    2013-11-01

    In this study, questions in context-based and traditional chemistry textbooks were analysed from two perspectives that are at the heart of chemistry curricula reforms: a content perspective and a learning activities perspective. To analyse these textbook questions, we developed an instrument for each perspective. In total, 971 textbook questions were analysed. Textbook questions in context-based and traditional curricula appeared to differ significantly in their orientation on content and in the activation to engage students in certain learning activities. Although traditional curricula included more questions that stress traditional chemistry content and included more reproductive chemistry questions than context-based curricula, they were not always as traditional as we had expected. Context-based chemistry curricula focused more on chemistry content relating to societal/technological issues and chemistry theory development and also more questions were included that activate students to regulate their own learning. However, context-based chemistry curricula still included a considerable amount of traditional chemistry content and did not focus as much on higher order learning as we had expected. The developed instruments might be helpful in chemistry curricula design to gain insights into the content which is stressed and how students are activated by textbook questions to engage in learning.

  18. Cultural differences in E-mail use of virtual teams: a critical social theory perspective.

    PubMed

    Lee, Ook

    2002-06-01

    This paper provides a perspective on cultural differences in e-mail use of virtual teams from the critical social theory (CST) point of view. CST can be used as a qualitative methodology in information systems research. Among CST concepts, Habermas' theory of communicative action is applied here for the purpose of drawing a plausible explanation for the phenomenon of cultural differences between East Asian countries and the West in the use of e-mail in virtual teams. East Asian countries such as Korea and Japan, which are heavily influenced by the Confucius tradition of emphasizing respect for the social order in all forms of social communication activity, including e-mail, provide different type of patterns of e-mail use in management of virtual teams compared to Western countries such as the United States. Not only can CST provide adequate theoretical support for the claim that e-mail use can be varied due to cultural difference when it is used to manage virtual teams, but it can also identify cultural codes such as respect for seniors as a part of the complete information package that can be illuminated during the use of e-mail, by using a CST concept called "critical reflection." A real-life example of the experience of a Korean firm's virtual team in the use of e-mail is analyzed in order to illustrate the CST perspective on cultural differences in the use of e-mail for virtual teams.

  19. An epigenetic perspective on the free radical theory of development

    PubMed Central

    Hitchler, Michael J; Domann, Frederick E

    2010-01-01

    The development of organisms requires concerted changes in gene activity. The free radical theory of development proposes that oxygen serves as a morphogen to educe development by influencing the production of metabolic oxidants such as free radicals and reactive oxygen species. One of the central tenets of this theory is that these metabolic oxidants influence development by altering the antioxidant capacity of cells by changing their production of glutathione (GSH). Here we extend upon these principles by linking GSH production and oxygen sensing in the control of gene expression to establish the epigenotype of cells during development. We prescribe this novel role to GSH and oxygen during development because these metabolites influence the activity of enzymes responsible for initiating and perpetuating epigenetic control of gene expression. Increased GSH production influences epigenetic processes including DNA and histone methylation by limiting the availability of S-adenosylmethionine, the cofactor utilized during epigenetic control of gene expression by DNA and histone methyltransferases. Moreover, the recent discovery of histone demethylases that require oxygen as a cofactor directly links epigenetic processes to oxygen gradients during development. PMID:17761298

  20. Nonlinear Perspectives on Family Process: Chaos and Catastrophe Theories.

    ERIC Educational Resources Information Center

    Ward, Margaret; Koopmans, Matthijs

    This paper explores the principal features of nonlinear dynamical systems and applies the theory to parents' acceptance of a child adopted at an older age. Although family systems theories tend to be weak in addressing family change, chaos theory and catastrophe theory allow consideration of sudden, discontinuous change. If stable, the family may…

  1. Literary Theory and the Reading Process: A Meeting of Perspectives.

    ERIC Educational Resources Information Center

    Harker, W. John

    1987-01-01

    Examines the relationship between current concepts of reading processes and contemporary theories of literary response. Argues that text-based reading theories are isomorphic with the New Criticism, and that reader-based theories of reading are isomorphic with reader-response criticism. Maintains that literary theory ignores interactive…

  2. Linking Complexity with Cultural Historical Activity Theory

    ERIC Educational Resources Information Center

    McMurtry, Angus

    2006-01-01

    This paper explores the similarities and differences between complexity science's and cultural-historical activity theory's understandings of human learning. Notable similarities include their emphasis on the importance of social systems or collectives in understanding human knowledge and practices, as well as their characterization of systems'…

  3. Theoretical Borderlands: Using Multiple Theoretical Perspectives to Challenge Inequitable Power Structures in Student Development Theory

    ERIC Educational Resources Information Center

    Abes, Elisa S.

    2009-01-01

    This article is an exploration of possibilities and methodological considerations for using multiple theoretical perspectives in research that challenges inequitable power structures in student development theory. Specifically, I explore methodological considerations when partnering queer theory and constructivism in research on lesbian identity…

  4. A Theory of Competence in Anesthesiology: Faculty Perspectives on Resident Performance

    ERIC Educational Resources Information Center

    Street, John P.

    2009-01-01

    This study was conducted to develop a theory of resident competence in anesthesiology and was guided by this research question: from the perspective of anesthesiology faculty members, "What are the attributes and indicators of clinical competence in residents?" The author used a grounded theory approach for this multi-case, multi-site…

  5. Critical Race Theory and the Perspectives of Black Men Teachers in the Los Angeles Public Schools.

    ERIC Educational Resources Information Center

    Lynn, Marvin

    2002-01-01

    Used critical race theory to examine black male teachers' perspectives on their racial identity in relation to their connection and responsibility toward students, noting trends in educational research and theory (black teachers as invisible or inconsequential and more nuanced understandings of black teachers' roles in urban schools). Black male…

  6. Dynamo theory prediction of solar activity

    NASA Technical Reports Server (NTRS)

    Schatten, Kenneth H.

    1988-01-01

    The dynamo theory technique to predict decadal time scale solar activity variations is introduced. The technique was developed following puzzling correlations involved with geomagnetic precursors of solar activity. Based upon this, a dynamo theory method was developed to predict solar activity. The method was used successfully in solar cycle 21 by Schatten, Scherrer, Svalgaard, and Wilcox, after testing with 8 prior solar cycles. Schatten and Sofia used the technique to predict an exceptionally large cycle, peaking early (in 1990) with a sunspot value near 170, likely the second largest on record. Sunspot numbers are increasing, suggesting that: (1) a large cycle is developing, and (2) that the cycle may even surpass the largest cycle (19). A Sporer Butterfly method shows that the cycle can now be expected to peak in the latter half of 1989, consistent with an amplitude comparable to the value predicted near the last solar minimum.

  7. An Activity Theory Approach to Research of ICT Integration in Singapore Schools

    ERIC Educational Resources Information Center

    Lim, Cher Ping; Hang, David

    2003-01-01

    This paper explains how activity theory is used as a framework to study the information and communication technologies (ICT) integration processes in Singapore schools, both from the sociocultural and pedagogical perspectives. The research study addresses the pertinent question of "How has ICT been integrated in Singapore schools such that…

  8. Cognitive Load Theory: New Conceptualizations, Specifications, and Integrated Research Perspectives

    ERIC Educational Resources Information Center

    Paas, Fred; van Gog, Tamara; Sweller, John

    2010-01-01

    Over the last few years, cognitive load theory has progressed and advanced rapidly. The articles in this special issue, which document those advances, are based on contributions to the 3rd International Cognitive Load Theory Conference (2009), Heerlen, The Netherlands. The articles of this special issue on cognitive load theory discuss new…

  9. Textbook Questions in Context-Based and Traditional Chemistry Curricula Analysed from a Content Perspective and a Learning Activities Perspective

    ERIC Educational Resources Information Center

    Overman, Michelle; Vermunt, Jan D.; Meijer, Paulien C.; Bulte, Astrid M. W.; Brekelmans, Mieke

    2013-01-01

    In this study, questions in context-based and traditional chemistry textbooks were analysed from two perspectives that are at the heart of chemistry curricula reforms: a content perspective and a learning activities perspective. To analyse these textbook questions, we developed an instrument for each perspective. In total, 971 textbook questions…

  10. Putting things into perspective: the nature and impact of theory of mind impairment in Huntington's disease.

    PubMed

    Eddy, Clare M; Sira Mahalingappa, Sridevi; Rickards, Hugh E

    2014-12-01

    In Huntington's disease (HD), frontostriatal dysfunction may lead to deficits in theory of mind (ToM), in addition to broader cognitive impairment. We investigated relationships between patients' spatial and social perspective taking performance and executive deficits, self-reported everyday perspective taking, motor symptoms, functional capacity and quality of life. Thirty patients with symptomatic HD and twenty-three healthy controls of similar age and education completed two ToM tasks, a scale assessing everyday interpersonal perspective taking, a novel object-based spatial perspective taking task (SPT) and executive measures. Ratings of quality of life, psychiatric symptoms, motor symptom severity and functional capacity were also taken for patients. When compared to controls, patients exhibited significant deficits in ToM and spatial perspective taking and lower everyday perspective taking scores. Executive deficits were linked to poor understanding of socially inappropriate remarks and errors in mental state attribution. This may be the first study to show that aspects of ToM performance are linked to spatial perspective taking, motor symptom severity and functional capacity in HD. Our findings indicate that patients with HD exhibit evidence of reduced perspective taking in everyday life in addition to poor performance on social and SPTs. They also emphasise the need to better specify the precise cognitive and neural bases for ToM deficits in neurodegenerative conditions. Further research exploring the impact of striatal degeneration on perspective taking abilities will make a valuable contribution to the continued development of functional models of frontostriatal circuitry.

  11. Theories and treatment of drug dependency: a neurochemical perspective.

    PubMed

    Pakdaman, Sheila; Wilcox, Richard E; Miller, Joseph D

    2014-01-01

    Treatment of chemical dependence ("addiction") requires an understanding of its effects on the brain. To guide research in the area of chemical dependence, several foundational theories have been developed. These include the incentive salience, receptor down-regulation, opponent process, and psychomotor stimulant theories. These have been important both in summarizing and in guiding investigations. However, the extant theories do not provide a single unified framework nor have they yielded all of the guidance necessary for effective chemical dependence treatment. The present paper summarizes and then integrates these theories and suggests some implications for the treatment followed by this integration.

  12. Assessing Perspective Taking in Schizophrenia Using Relational Frame Theory

    ERIC Educational Resources Information Center

    Villatte, Matthieu; Monestes, Jean-Louis; McHugh, Louise; Freixa i Baque, Esteve; Loas, Gwenole

    2010-01-01

    The current study assessed deictic relational responding in people with schizophrenia. A perspective-taking task and a mental states attribution task were employed with a sample of 15 patients diagnosed with schizophrenia and 15 age-matched controls. Results revealed poorer performance of participants with schizophrenia in responding in accordance…

  13. Being Lonely, Falling in Love: Perspectives from Attachment Theory.

    ERIC Educational Resources Information Center

    Shaver, Phillip

    Love and loneliness hold special interest at a time when divorce and geographical mobility pull so many people apart. Attachment theory offers a useful integrative framework to study adolescent and adult love and loneliness. Attachment theory has three propositions: (1) when an individual is confident an attachment figure will be available when he…

  14. Bringing Curriculum Theory and Didactics Together: A Deweyan Perspective

    ERIC Educational Resources Information Center

    Deng, Zongyi

    2016-01-01

    Using Dewey's method of resolution for resolving a dualism exemplified in "The Child and the Curriculum," this article reconciles and brings together two rival schools of thought--curriculum theory and didactics--in China. The central thesis is that the rapprochement requires a reconceptualisation of curriculum theory and didactics in…

  15. A Developmental Perspective for Promoting Theory of Mind

    ERIC Educational Resources Information Center

    Westby, Carol; Robinson, Lee

    2014-01-01

    Social neuroscience research has resulted in changing views of the theory of mind (ToM) construct. Theory of mind is no longer viewed as a unitary construct, but rather as a multidimensional construct comprising cognitive and affective ToM and interpersonal and intrapersonal ToM, each of which has differing neurophysiological/neuroanatomical…

  16. Spiritual leadership at the workplace: Perspectives and theories

    PubMed Central

    Meng, Yishuang

    2016-01-01

    Leadership has always been an area of interest since time immemorial. Nevertheless, scientific theories regarding leadership started to appear only from the beginning of the 20th century. Modern theories of leadership such as strategic leadership theory emerged as early as the 1980s when outdated theories of behavioral contingency were questioned, resulting in the beginning of a shift in focus leading to the emergence of modern theories hypothesizing the importance of vision, motivation and value-based control of clan and culture. Value-driven clan control emphasizes the importance of the role played by employees in a rapidly changing work environment. Therefore, the 21st century marked the rise of the need to establish a culture driven by values, inspiring the workforce to struggle and strongly seek a shared vision. This can be accomplished by an effective and motivating leadership. PMID:27699006

  17. Spiritual leadership at the workplace: Perspectives and theories.

    PubMed

    Meng, Yishuang

    2016-10-01

    Leadership has always been an area of interest since time immemorial. Nevertheless, scientific theories regarding leadership started to appear only from the beginning of the 20th century. Modern theories of leadership such as strategic leadership theory emerged as early as the 1980s when outdated theories of behavioral contingency were questioned, resulting in the beginning of a shift in focus leading to the emergence of modern theories hypothesizing the importance of vision, motivation and value-based control of clan and culture. Value-driven clan control emphasizes the importance of the role played by employees in a rapidly changing work environment. Therefore, the 21st century marked the rise of the need to establish a culture driven by values, inspiring the workforce to struggle and strongly seek a shared vision. This can be accomplished by an effective and motivating leadership.

  18. Internally directed cognition and mindfulness: an integrative perspective derived from predictive and reactive control systems theory

    PubMed Central

    Tops, Mattie; Boksem, Maarten A. S.; Quirin, Markus; IJzerman, Hans; Koole, Sander L.

    2013-01-01

    In the present paper, we will apply the predictive and reactive control systems (PARCS) theory as a framework that integrates competing theories of neural substrates of awareness by describing the “default mode network” (DMN) and anterior insula (AI) as parts of two different behavioral and homeostatic control systems. The DMN, a network that becomes active at rest when there is no external stimulation or task to perform, has been implicated in self-reflective awareness and prospection. By contrast, the AI is associated with awareness and task-related attention. This has led to competing theories stressing the role of the DMN in self-awareness vs. the role of interoceptive and emotional information integration in the AI in awareness of the emotional moment. In PARCS, the respective functions of the DMN and AI in a specific control system explains their association with different qualities of awareness, and how mental states can shift from one state (e.g., prospective self-reflection) to the other (e.g., awareness of the emotional moment) depending on the relative dominance of control systems. These shifts between reactive and predictive control are part of processes that enable the intake of novel information, integration of this novel information within existing knowledge structures, and the creation of a continuous personal context in which novel information can be integrated and understood. As such, PARCS can explain key characteristics of mental states, such as their temporal and spatial focus (e.g., a focus on the here and now vs. the future; a first person vs. a third person perspective). PARCS further relates mental states to brain states and functions, such as activation of the DMN or hemispheric asymmetry in frontal cortical functions. Together, PARCS deepens the understanding of a broad range of mental states, including mindfulness, mind wandering, rumination, autobiographical memory, imagery, and the experience of self. PMID:24904455

  19. Rainbow Solfege: new perspective for color theory and music education

    NASA Astrophysics Data System (ADS)

    Colla, Virginia C.

    2002-06-01

    The Rainbow Solfege System is an innovative, interdisciplinary music teaching method that illustrates in living color the linear and vertical energy of melodic movement and harmonic progressions: a synthesis of color, shape, sound and language. The system is rooted in proven pedagogical practice, while providing a fresh approach to educational methodology. Rainbow Solfege is based upon principles of tertian harmony and concepts of tonality in music and is analogous to color theory and shape theory in art. The pedagogy is holistic in design involving a variety of learning modes - visual, aural and kinesthetic - and is an effective learning tool for all ages and stages. Educational uses run the gamut from teaching musical concepts and color/shape theory for very young children to applications in college level music theory and analysis courses. With consistent application, particularly in early childhood, the method has potential for increasing musical, artistic and linguistic abilities for life.

  20. Current Perspectives on Pronunciation. Practices Anchored in Theory.

    ERIC Educational Resources Information Center

    Morley, Joan, Ed.

    A collection of essays on pronunciation instruction theory and practice includes: "Teaching Pronunciation as Communication" (Marianne Celce-Murcia); "Learner Variables and Prepronunciation Considerations in Teaching Pronunciation" (Rita Wong); "Pronunciation and Listening Comprehension" (Judy B. Gilbert); "Pronunciation Tutorials for Nonnative…

  1. Interpersonal Deception Theory: Examining Deception From a Communication Perspective.

    DTIC Science & Technology

    1998-06-01

    Theory recognizes deception as a communicative event, rather than merely a psychological phenomenonL In so doing, it raises serious challenges to the...Deception Theory .................................... 6 iv Introduction Research on deception has generally focused on psychological processes rather than...correlates of equivocation from the Bavelas et al. (1Q90) research. Journal of lineage and Social Psychology . Several comparisons wexe performed in the

  2. Perspectives on the dental school learning environment: putting theory X and theory Y into action in dental education.

    PubMed

    Connor, Joseph P; Troendle, Karen

    2008-12-01

    Theory X and Theory Y are terms coined by Douglas McGregor to express the belief that managers' behaviors are shaped by their assumptions about the motivation of their subordinates. The theories were applied to dental education in a Perspectives article published in the August 2007 issue of the Journal of Dental Education. This article explains how those seemingly contradictory theories can be reconciled using the concept of the "emotional bank account" introduced by Stephen Covey in The 7 Habits of Highly Effective People. Understanding the underlying concept of an emotional bank account helps dental educators to bridge the generation gap between instructors, born during the baby boom period of 1946-63, and dental students, born after 1980, who are referred to as "Generation Y" or "millennials."

  3. The Impact of Comparative Education Research on Institutional Theory. International Perspectives on Education and Society. Volume 7

    ERIC Educational Resources Information Center

    Baker, David, Ed.; Wiseman, Alex, Ed.

    2006-01-01

    This volume of International Perspectives on Education and Society explores how educational research from a comparative perspective has been instrumental in broadening and testing hypotheses from institutional theory. Institutional theory has also played an increasingly influential role in developing an understanding of education in society. This…

  4. Synchronous brain activity across individuals underlies shared psychological perspectives

    PubMed Central

    Lahnakoski, Juha M.; Glerean, Enrico; Jääskeläinen, Iiro P.; Hyönä, Jukka; Hari, Riitta; Sams, Mikko; Nummenmaa, Lauri

    2014-01-01

    For successful communication, we need to understand the external world consistently with others. This task requires sufficiently similar cognitive schemas or psychological perspectives that act as filters to guide the selection, interpretation and storage of sensory information, perceptual objects and events. Here we show that when individuals adopt a similar psychological perspective during natural viewing, their brain activity becomes synchronized in specific brain regions. We measured brain activity with functional magnetic resonance imaging (fMRI) from 33 healthy participants who viewed a 10-min movie twice, assuming once a ‘social’ (detective) and once a ‘non-social’ (interior decorator) perspective to the movie events. Pearson's correlation coefficient was used to derive multisubject voxelwise similarity measures (inter-subject correlations; ISCs) of functional MRI data. We used k-nearest-neighbor and support vector machine classifiers as well as a Mantel test on the ISC matrices to reveal brain areas wherein ISC predicted the participants' current perspective. ISC was stronger in several brain regions—most robustly in the parahippocampal gyrus, posterior parietal cortex and lateral occipital cortex—when the participants viewed the movie with similar rather than different perspectives. Synchronization was not explained by differences in visual sampling of the movies, as estimated by eye gaze. We propose that synchronous brain activity across individuals adopting similar psychological perspectives could be an important neural mechanism supporting shared understanding of the environment. PMID:24936687

  5. On the limits of psychoanalytic theory: a cautionary perspective.

    PubMed

    Horner, Althea J

    2006-01-01

    Citing the complexities of the human mind with respect to early development and its functioning in later life, the author cautions against the reliance on any individual psychoanalytic theory in clinical work. Psychoanalytic theories, in general, do not take into account many factors such as the patient's constitutional givens, his or her inborn temperament, family system factors, the impact of the autonomous functions on development, the limits of the child in Piagetian terms, or post-oedipal learning. The analyst's favorite theory may become a belief system that shapes his or her understanding of the patient leading to an imposition of the theory on the data. The analyst's sense of certainty about his or her favorite theory may be based on a transference to the author of the theory or from its fit with his or her own psychological makeup. Cited is Greenson's position (1969/1978) that if he tries to imagine an analytic session with a "true believer" analyst repeating the catechism of his school, he would find it "hard to see this as a living creative experience for either the patient or the therapist" (p. 354). Ultimately, not accountable in terms of any psychoanalytic theory, there is something ineffable, which is the persistent and basically indestructible essence of the person that cannot be explained on the basis of good mothering or on the basis of a facilitating environment. Whether this is thought of as "soul" or "spirit," or even a Winnicottian "true self," it is not something the psychotherapist can omnipotently create. It can only be discovered - unearthed, unburied, cleared away of emotional clutter.

  6. Skeletal Adaptation to Daily Activity: A Biochemical Perspective

    NASA Technical Reports Server (NTRS)

    Whalen, Robert T.; Dalton, Bonnie (Technical Monitor)

    2002-01-01

    Musculoskeletal forces generated by normal daily activity on Earth maintain the functional and structural properties of muscle and bone throughout most of one's adult life. A reduction in the level of cumulative daily loading caused by space flight, bed rest or spinal cord injury induces rapid muscle atrophy, functional changes in muscle, and bone resorption in regions subjected to the reduced loading. Bone cells in culture and bone tissue reportedly respond to a wide variety of non-mechanical and mechanical stimuli ranging, from electromagnetic fields, and hormones to small amplitude, high frequency vibrations, fluid flow, strain rate, and stress/strain magnitude. However, neither the transduction mechanism that transforms the mechanical input into a muscle or bone metabolic response nor the characteristics, of the loading history that directly or indirectly stimulates the cell is known. Identifying the factors contributing to the input stimulus will have a major impact on the design of effective countermeasures for long duration space flight. This talk will present a brief overview of current theories of bone remodeling and functional adaptation to mechanical loading. Work from our lab will be presented from the perspective of daily cumulative loading on Earth and its relationship to bone density and structure. Our objective is to use the tibia and calcaneus as model bone sites of cortical and cancellous bone adaptation, loaded daily by musculoskeletal forces in equilibrium with the ground reaction force. All materials that will be discussed are in the open scientific literature.

  7. Toward a mathematical theory of living systems focusing on developmental biology and evolution: a review and perspectives.

    PubMed

    Bellomo, N; Carbonaro, B

    2011-03-01

    This review paper is devoted to present a personal perspective, based on a critical analysis of the existing literature, about the conceptual difficulties that mathematics meets when attempting to describe the complexity of living matter focusing on the challenging goal of developing a mathematical theory for living systems. The authors propose a personal path, starting from the identification of a number of common features of living systems that can be viewed as sources of complexity, firstly in general, and subsequently focusing specifically on evolution problems. Further, three key questions are posed addressing to a mathematical theory. Finally, the tools of the kinetic theory of active particles are critically analyzed to understand how far this approach still is from the achievement of the afore said ambitious objective.

  8. Mexican Americans and historical trauma theory: a theoretical perspective.

    PubMed

    Estrada, Antonio L

    2009-01-01

    The observed intergenerational stress response to negative social and historical events is at the core of historical trauma theory, which has been applied to Native Americans, African Americans, and Pacific Islanders, among others. The historical and social experiences of the Mexican population living in the United States have many parallels that lend themselves to the application of historical trauma theory to macro-level and micro-level influences on access to health care, physical health status, and mental health status, including substance abuse among Mexican Americans. This article highlights the legacy of Spanish colonialism and Anglo-American neo-colonialism on Mexicans and Mexican Americans in the southwestern United States through a potential application of historical trauma theory.

  9. Theory from Fiction: A Narrative Process Perspective on the Pedagogical Use of Feature Film

    ERIC Educational Resources Information Center

    Huczynski, Andrzej; Buchanan, David

    2004-01-01

    Analyzing film narrative to reveal embedded theory, this article suggests a novel approach to the use of feature movies in management education. Two films are analyzed from this perspective. Contact presents a narrative of organization politics, arguing that integrity can damage an individual's career. Elizabeth offers a leadership narrative,…

  10. Theorizing Teachers' Perspectives on an EFL Textbook for Public High Schools of Iran: A Grounded Theory

    ERIC Educational Resources Information Center

    Namaghi, Seyyed Ali Ostovar; Moghaddam, Mohammad Reza Saboor; Tajzad, Maryam

    2014-01-01

    The purpose of this study is to explore language teachers' perspectives on Iranian third grade senior high school EFL textbook, which is prescribed by the Ministry of Education. In data collection and analysis, the researchers used theoretical sampling and the coding schemes presented in grounded theory. Final analysis yielded "Negative…

  11. Executive Function and Reading Aptitude: A Grounded Theory Analysis of Teacher Perspectives

    ERIC Educational Resources Information Center

    Nordman, Jenny

    2013-01-01

    This qualitative, grounded theory study investigated teacher perspectives on the relationship between executive function and reading aptitude. The influence of executive function may be underestimated in terms of its impact on reading aptitude, which could have significant implications on how reading aptitude is currently defined. The foundational…

  12. Perspectives on the Aetiology of ODD and CD: A Grounded Theory Approach

    ERIC Educational Resources Information Center

    McFarland, Patrick; Sanders, James; Hagen, Bradley

    2016-01-01

    Antisocial disorders, such as oppositional defiant disorder (ODD) and conduct disorder (CD), are common reasons for youth to be seen for clinical intervention. The intent of this constructivist grounded theory study was to evaluate clinicians' perspectives on the aetiology of antisocial disorders. Six professionals from various professional…

  13. From Fordism to Neo-Fordism: Industrialisation Theory and Distance Education--a Chinese Perspective.

    ERIC Educational Resources Information Center

    Ding, Xingfu

    1995-01-01

    Provides a Chinese perspective on the debate concerning industrialization theory and distance education. Argues that higher education in China has a "craft-like" nature and China's Radio and TV Higher Education (RTVHE) represents one of the most industrialized forms of education in the world. Notes that RTVHE is in transition from…

  14. A Grounded Theory Study of Effective Global Leadership Development Strategies: Perspectives from Brazil, India, and Nigeria

    ERIC Educational Resources Information Center

    Lokkesmoe, Karen Jane

    2009-01-01

    This qualitative, grounded theory study focuses on global leadership and global leadership development strategies from the perspective of people from three developing countries, Brazil, India, and Nigeria. The study explores conceptualizations of global leadership, the skills required to lead effectively in global contexts, and recommended…

  15. Cognitive Structures of the Gifted: Theoretical Perspectives, Factor Analysis, Triarchic Theories of Intelligence, and Insight Issues.

    ERIC Educational Resources Information Center

    Shaughnessy, Michael F.

    The paper reviews research on the cognitive structures of gifted students. Theories of R. Sternberg and his triarchic model of intelligence are described. Sternberg asserts that three processes appear to account for insight: selective encoding, selective combination, and selective comparison. H. Gardner's perspective citing six types of…

  16. Multiple Intelligence Theory and Foreign Language Learning: A Brain-Based Perspective

    ERIC Educational Resources Information Center

    Arnold, Jane; Fonseca, Mª Carmen

    2004-01-01

    Gardner's Multiple Intelligences theory is presented as a cognitive perspective on intelligence which has profound implications for education in general. More specifically, it has led to the application of eight of these frames to language teaching and learning. In this chapter, we will argue in favour of the application of MIT to the EFL…

  17. Understanding Frame-of-Reference Training Success: A Social Learning Theory Perspective

    ERIC Educational Resources Information Center

    Sulsky, Lorne M.; Kline, Theresa J. B.

    2007-01-01

    Employing the social learning theory (SLT) perspective on training, we analysed the effects of alternative frame-of-reference (FOR) training protocols on various criteria of training effectiveness. Undergraduate participants (N = 65) were randomly assigned to one of four FOR training conditions and a control condition. Training effectiveness was…

  18. Multiple Intelligences Theory and Foreign Language Education: Perspectives of College Students in a German Immersion Program

    ERIC Educational Resources Information Center

    Weber-Segler, Ellen

    2013-01-01

    The purpose of this qualitative research study was to explore and comprehend the role of Howard Gardner's theory of multiple intelligences (MI) in foreign language learning by analyzing the perspectives of college students in a German immersion program at a liberal arts college in the Midwest. Data collection included 10 in-depth student…

  19. Educational Research and Theory Perspectives on Intelligent Computer-Assisted Instruction.

    ERIC Educational Resources Information Center

    Tennyson, Robert D.; Christensen, Dean L.

    This paper defines the next generation of intelligent computer-assisted instructional systems (ICAI) by depicting the elaborations and extensions offered by educational research and theory perspectives to enhance the ICAI environment. The first section describes conventional ICAI systems, which use expert systems methods and have three modules: a…

  20. Enhancing Student Motivation: A Longitudinal Intervention Study Based on Future Time Perspective Theory

    ERIC Educational Resources Information Center

    Schuitema, Jaap; Peetsma, Thea; van der Veen, Ineke

    2014-01-01

    The authors investigated the effects of an intervention developed to enhance student motivation in the first years of secondary education. The intervention, based on future time perspective (FTP) theory, has been found to be effective in prevocational secondary education (T. T. D. Peetsma & I. Van der Veen, 2008, 2009). The authors extend the…

  1. Score Reliability of a Test Composed of Passage-Based Testlets: A Generalizability Theory Perspective.

    ERIC Educational Resources Information Center

    Lee, Yong-Won

    The purpose of this study was to investigate the impact of local item dependence (LID) in passage-based testlets on the test score reliability of an English as a Foreign Language (EFL) reading comprehension test from the perspective of generalizability (G) theory. Definitions and causes of LID in passage-based testlets are reviewed within the…

  2. Construction of a Conceptualization of Personal Knowledge within a Knowledge Management Perspective Using Grounded Theory Methodology

    ERIC Educational Resources Information Center

    Straw, Eric M.

    2013-01-01

    The current research used grounded theory methodology (GTM) to construct a conceptualization of personal knowledge within a knowledge management (KM) perspective. The need for the current research was based on the use of just two categories of knowledge, explicit and tacit, within KM literature to explain diverse characteristics of personal…

  3. The present status of stellar activity theory

    NASA Astrophysics Data System (ADS)

    Belvedere, G.

    Features, predictions available from, and problems facing mean field electrodynamic (MFE) models of solar and stellar dynamo activities are outlined. The linear, kinetic dynamo (LKD) approach describes the interaction between a turbulent velocity field and a magnetic field in terms of an MFE induction equation. LKD permits the reciprocal generation of poloidal and toroidal fields through rotational and cyclonic, turbulent forces. Nonlinear hydromagnetic theory considers magnetic field back reaction effects on the kinematic field by the Lorentz EM body force. All forces in the LKD model increase in impact with advancing spectral evolution. Differential rotation and dynamo action become particularly important. Further research is needed to account for the gap in the F-G region of the evolutionary continuum, the occurrence of multimodal dynamo features, and the presence of cyclic and noncyclic dynamo activity, depending on the star.

  4. Theory of Mind: An Overview and Behavioral Perspective

    ERIC Educational Resources Information Center

    Schlinger, Henry D., Jr.

    2009-01-01

    Theory of mind (ToM) refers to the ability of an individual to make inferences about what others may be thinking or feeling and to predict what they may do in a given situation based on those inferences. Discussions of ToM focus almost exclusively on inferred cognitive structures and processes and shed little light on the actual behaviors…

  5. School Management and Contingency Theory: An Emerging Perspective.

    ERIC Educational Resources Information Center

    Hanson, E. Mark

    An understanding of the "situational" characteristics of the organizational forces that influence the relationships between environmental, management, and performance variables is now coming to be seen as a key to understanding the management process itself. This paper is a synthesis of the contingency theory literature drawn from the…

  6. A Lifespan Perspective on Cooperative Education Learning: A Grounded Theory

    ERIC Educational Resources Information Center

    Linn, Patricia

    2015-01-01

    This qualitative study sits at the intersection of two trends in vocational education. The first trend is a narrative approach to understanding cooperative education learning; the second is a movement away from career development theories toward the view that individuals use work experiences to help construct their lives. Both trends view learning…

  7. Analyzing Digital Library Initiatives: 5S Theory Perspective

    ERIC Educational Resources Information Center

    Isah, Abdulmumin; Mutshewa, Athulang; Serema, Batlang; Kenosi, Lekoko

    2015-01-01

    This article traces the historical development of Digital Libraries (DLs), examines some DL initiatives in developed and developing countries and uses 5S Theory as a lens for analyzing the focused DLs. The analysis shows that present-day systems, in both developed and developing nations, are essentially content and user centric, with low level…

  8. Designing for Instrumentalisation: Constructionist Perspectives on Instrumental Theory

    ERIC Educational Resources Information Center

    Kynigos, Chronis; Psycharis, Giorgos

    2013-01-01

    In this paper we aim to contribute to the process of networking between theoretical frames in mathematics education by means of forging connections between Constructionism and Instrumental Theory to discuss a design for instrumentalisation. We specifically focus on instrumentalisation, i.e. the ways in which students make changes to digital…

  9. Predicting Career Indecision: A Self-Determination Theory Perspective

    ERIC Educational Resources Information Center

    Guay, Frederic; Senecal, Caroline; Gauthier, Lysanne; Fernet, Claude

    2003-01-01

    The purpose of this study was to propose and test a model of career indecision based on self-determination theory (E. L. Deci & R. M. Ryan, 1985). This model posits that peer and parental styles predicted career indecision through perceived self-efficacy and autonomy. Participants were 834 college students (236 men, 581 women, 17 without gender…

  10. Constructive field theory and applications: Perspectives and open problems

    NASA Astrophysics Data System (ADS)

    Rivasseau, V.

    2000-06-01

    In this paper we review many interesting open problems in mathematical physics which may be attacked with the help of tools from constructive field theory. They could give work for future mathematical physicists trained with constructive methods well into the 21st century.

  11. Motivational Classroom Climate for Learning Mathematics: A Reversal Theory Perspective

    ERIC Educational Resources Information Center

    Lewis, Gareth

    2015-01-01

    In this article, a case is made that affect is central in determining students' experience of learning or not learning mathematics. I show how reversal theory (Apter, 2001), and particularly its taxonomy of motivations and emotions, provides a basis for a thick description of students' experiences of learning in a mathematics classroom. Using data…

  12. Putting Herzberg's Two Factor Theory of Motivation in Perspective.

    ERIC Educational Resources Information Center

    May, Charles R.; Decker, Robert H.

    1988-01-01

    Explores challenges to Frederick Herzberg's Two Factor Theory of Motivation--a required concept in many administrator preparation programs. Herzberg used modified critical incident (or self-reporting) techniques to illustrate that job satisfaction and dissatisfaction occupied different continua and were not opposed to each other. Criticisms, study…

  13. Learning Organisation Review--A "Good" Theory Perspective

    ERIC Educational Resources Information Center

    Santa, Mijalce

    2015-01-01

    Purpose: The purpose of this paper is to perform integrative literature review of the learning organisation (LO) concept, on the basis of the results of the literature review to assess the concept on the principles of "good" theory, and provide future avenues for LO concept clarification and development. Design/methodology/approach: The…

  14. Interdisciplinarity in Vocational Guidance: An Action Theory Perspective

    ERIC Educational Resources Information Center

    Valach, Ladislav; Young, Richard A.

    2009-01-01

    In addressing the issue of interdisciplinary research in vocational guidance, twelve propositions important for understanding the vocational guidance process as joint, goal-directed action are presented. They address the encounter between client and counsellor leading to relational ethics, the relevance of everyday action theory and methods for…

  15. Perspective of Game Theory in Education for Sustainable Development

    ERIC Educational Resources Information Center

    Ahrens, A.; Zascerinska, J.

    2012-01-01

    The sustainable development of society has attracted a lot of research efforts. A strategic aspect to the society's evolution is introduced by the game theory (Fernandez, 2011, p. 1). The research question is as follows: how to organize the process of teaching and learning in education for sustainable development? The aim of the research is to…

  16. Modeling active memory: Experiment, theory and simulation

    NASA Astrophysics Data System (ADS)

    Amit, Daniel J.

    2001-06-01

    Neuro-physiological experiments on cognitively performing primates are described to argue that strong evidence exists for localized, non-ergodic (stimulus specific) attractor dynamics in the cortex. The specific phenomena are delay activity distributions-enhanced spike-rate distributions resulting from training, which we associate with working memory. The anatomy of the relevant cortex region and the physiological characteristics of the participating elements (neural cells) are reviewed to provide a substrate for modeling the observed phenomena. Modeling is based on the properties of the integrate-and-fire neural element in presence of an input current of Gaussian distribution. Theory of stochastic processes provides an expression for the spike emission rate as a function of the mean and the variance of the current distribution. Mean-field theory is then based on the assumption that spike emission processes in different neurons in the network are independent, and hence the input current to a neuron is Gaussian. Consequently, the dynamics of the interacting network is reduced to the computation of the mean and the variance of the current received by a cell of a given population in terms of the constitutive parameters of the network and the emission rates of the neurons in the different populations. Within this logic we analyze the stationary states of an unstructured network, corresponding to spontaneous activity, and show that it can be stable only if locally the net input current of a neuron is inhibitory. This is then tested against simulations and it is found that agreement is excellent down to great detail. A confirmation of the independence hypothesis. On top of stable spontaneous activity, keeping all parameters fixed, training is described by (Hebbian) modification of synapses between neurons responsive to a stimulus and other neurons in the module-synapses are potentiated between two excited neurons and depressed between an excited and a quiescent neuron

  17. Cognitive Representation of Human Action: Theory, Applications, and Perspectives

    PubMed Central

    Seegelke, Christian; Schack, Thomas

    2016-01-01

    In this perspective article, we propose a cognitive architecture model of human action that stresses the importance of cognitive representations stored in long-term memory as reference structures underlying and guiding voluntary motor performance. We introduce an experimental approach to ascertain cognitive representation structures and provide evidence from a variety of different studies, ranging from basic research in manual action to application-oriented research, such as athlete performance and rehabilitation. As results from these studies strongly support the presence of functional links between cognitive and motor processes, we regard this approach as a suitable and valuable tool for a variety of different disciplines related to cognition and movement. We conclude this article by highlighting current advances in ongoing research projects aimed at improving interaction capabilities in technical systems, particularly for rehabilitation and everyday support of the elderly, and outline future research directions. PMID:26925398

  18. Cognitive Representation of Human Action: Theory, Applications, and Perspectives.

    PubMed

    Seegelke, Christian; Schack, Thomas

    2016-01-01

    In this perspective article, we propose a cognitive architecture model of human action that stresses the importance of cognitive representations stored in long-term memory as reference structures underlying and guiding voluntary motor performance. We introduce an experimental approach to ascertain cognitive representation structures and provide evidence from a variety of different studies, ranging from basic research in manual action to application-oriented research, such as athlete performance and rehabilitation. As results from these studies strongly support the presence of functional links between cognitive and motor processes, we regard this approach as a suitable and valuable tool for a variety of different disciplines related to cognition and movement. We conclude this article by highlighting current advances in ongoing research projects aimed at improving interaction capabilities in technical systems, particularly for rehabilitation and everyday support of the elderly, and outline future research directions.

  19. THEORY OF PROTEIN FOLDING: The Energy Landscape Perspective

    NASA Astrophysics Data System (ADS)

    Onuchic, Jose Nelson; Luthey-Schulten, Zaida; Wolynes, Peter G.

    1997-10-01

    The energy landscape theory of protein folding is a statistical description of a protein's potential surface. It assumes that folding occurs through organizing an ensemble of structures rather than through only a few uniquely defined structural intermediates. It suggests that the most realistic model of a protein is a minimally frustrated heteropolymer with a rugged funnel-like landscape biased toward the native structure. This statistical description has been developed using tools from the statistical mechanics of disordered systems, polymers, and phase transitions of finite systems. We review here its analytical background and contrast the phenomena in homopolymers, random heteropolymers, and protein-like heteropolymers that are kinetically and thermodynamically capable of folding. The connection between these statistical concepts and the results of minimalist models used in computer simulations is discussed. The review concludes with a brief discussion of how the theory helps in the interpretation of results from fast folding experiments and in the practical task of protein structure prediction.

  20. Group psychotherapy and neuro-plasticity: an attachment theory perspective.

    PubMed

    Flores, Philip J

    2010-10-01

    This article selectively highlights relevant areas of neuroscience research which have direct application for attachment theory and group psychotherapy. Emerging evidence from the neurosciences is revealing that the developing brain of the infant, sculpted by the earliest attachment relationships, continues to be malleable in adulthood and can be profoundly influenced by ongoing relationships throughout one's lifespan. Advances in the neurosciences are also supporting the idea that strong attachment bonds and external interpersonal interactions that arise within the context of these attachments are registered as a person's neurophysiology and neurobiology. Attachment theory in particular provides a common language and conceptual framework from which the contributions from the neurosciences can be made applicable to group psychotherapy.

  1. Educational Theories, Cultures and Learning: A Critical Perspective. Critical Perspectives on Education

    ERIC Educational Resources Information Center

    Daniels, Harry, Ed.; Lauder, Hugh, Ed.; Porter, Jill, Ed.

    2011-01-01

    "Educational Theories, Cultures and Learning" focuses on how education is understood in different cultures, the theories and related assumptions we make about learners and students and how we think about them, and how we can understand the principle actors in education--learners and teachers. Within this volume, internationally renowned…

  2. Literary pedagogy in nursing: a theory-based perspective.

    PubMed

    Sakalys, Jurate A

    2002-09-01

    Using fictional and autobiographical literature in nursing education is a primary way of understanding patients' lived experiences and fostering development of essential relational and reflective thinking skills. Application of literary theory to this pedagogic practice can expand conceptualization of teaching goals, inform specific teaching strategies, and potentially contribute to socially consequential educational outcomes. This article describes a theoretical schema that focuses on pedagogical goals in terms of the three related skills (i.e., reading, interpretation, criticism) of textual competence.

  3. Theory and modelling of diamond fracture from an atomic perspective.

    PubMed

    Brenner, Donald W; Shenderova, Olga A

    2015-03-28

    Discussed in this paper are several theoretical and computational approaches that have been used to better understand the fracture of both single-crystal and polycrystalline diamond at the atomic level. The studies, which include first principles calculations, analytic models and molecular simulations, have been chosen to illustrate the different ways in which this problem has been approached, the conclusions and their reliability that have been reached by these methods, and how these theory and modelling methods can be effectively used together.

  4. A new perspective on John Snow's communicable disease theory.

    PubMed

    Winkelstein, W

    1995-11-01

    When John Snow undertook the studies of the cholera epidemic of 1854 in London, he was testing his theory of communicable disease, which had been enunciated in an oration delivered at the 80th anniversary of the Medical Society of London. Snow had been elected orator of the year for 1853 and, according to his biographer, had spent the better part of a year in preparation. The oration was titled, "On Continuous Molecular Changes, More Particularly in Their Relation to Epidemic Diseases." Although the text of this oration is readily available in the 1936 Commonwealth Fund facsimile reprint of Snow's more famous cholera studies, few modern epidemiologists are familiar with the work. In it, Snow lays out a theory which includes recognition that for each communicable disease there is a distinct and specific cause, that the causal agent is a living organism which is stable over many generations of propagation, that infection is necessary for communication to occur, and that the quantity of infectious material transmitted is increased by multiplication after infection to produce disease manifestations. Although Snow's theory is similar to Jacob Henle's formulations of a decade earlier, it is more precise, more comprehensive, and more explicit. On the basis of this work alone, Snow deserves broader recognition than he has received.

  5. Rethinking Distance Learning Activities: A Comparison of Transactional Distance Theory and Activity Theory

    ERIC Educational Resources Information Center

    Kang, Haijun; Gyorke, Allan S.

    2008-01-01

    Despite its invaluable guidance to distance education development, transactional distance (TD) theory is not seamlessly synchronised with current field practice and lacks a social component. After it has provided over 30 years of guidance, there is now a need to re-appraise TD's propositions about distance learning activities. The social-cultural…

  6. Successful After-School Physical Activity Clubs in Urban High Schools: Perspectives of Adult Leaders and Student Participants

    ERIC Educational Resources Information Center

    Garn, Alex C.; McCaughtry, Nate; Kulik, Noel L.; Kaseta, Michele; Maljak, Kim; Whalen, Laurel; Shen, Bo; Martin, Jeffrey J.; Fahlman, Mariane

    2014-01-01

    Grounded in social cognitive theory, the purpose of this study was to examine leaders' and students' perspectives of factors that contribute to effective voluntary after-school physical activity clubs. Data were collected over two-years via field observations (n= 115) and interviews with students (n= 278) and adult leaders (n= 126). Results…

  7. Theory and modeling of active brazing.

    SciTech Connect

    van Swol, Frank B.; Miller, James Edward; Lechman, Jeremy B.; Givler, Richard C.

    2013-09-01

    Active brazes have been used for many years to produce bonds between metal and ceramic objects. By including a relatively small of a reactive additive to the braze one seeks to improve the wetting and spreading behavior of the braze. The additive modifies the substrate, either by a chemical surface reaction or possibly by alloying. By its nature, the joining process with active brazes is a complex nonequilibrium non-steady state process that couples chemical reaction, reactant and product diffusion to the rheology and wetting behavior of the braze. Most of the these subprocesses are taking place in the interfacial region, most are difficult to access by experiment. To improve the control over the brazing process, one requires a better understanding of the melting of the active braze, rate of the chemical reaction, reactant and product diffusion rates, nonequilibrium composition-dependent surface tension as well as the viscosity. This report identifies ways in which modeling and theory can assist in improving our understanding.

  8. Volume change theory for syringomyelia: A new perspective

    PubMed Central

    Rai, Survendra Kumar Rajdeo; Rai, Pooja Survendra Kumar

    2015-01-01

    Background: The etiopathogenesis of syringomyelia is still an enigma. The authors present a novel theory based on fluid dynamics at the craniovertebral (CV) junction to explain the genesis of syringomyelia (SM). The changes in volume of spinal canal, spinal cord, central canal and spinal subarachnoid space (SSS) in relation to the posterior fossa have been analysed, specifically during postural movements of flexion and extension. The effect of fluctuations in volume of spinal canal and its contents associated with cerebrospinal fluid (CSF) flow dynamics at the CV junction have been postulated to cause the origin and propagation of the syringomyelia. The relevant literature on the subject has been reviewed and the author's theory has been discussed. Conclusion: Volume of spinal canal in flexion is always greater than that in extension. Flexion of spine causes narrowing of the ventral subarachnoid space (SAS) and widening of dorsal SAS while extension causes reverse changes leading to fluid movement in dorsal spinal SAS in flexion and ventral spinal SAS in extension. Cervical and lumbar spinal region with maximum bulk hence maximum area and volume undergo maximum deformation during postural changes. SSS CSF is the difference between the volume of spinal canal and spinal cord, varies in flexion and extension which is compensated by changes in posterior fossa (CSF) volume in normal circumstances. Blocked SAS at foramen magnum donot permit spinal SAS CSF exchange which during postural changes is compensated by cavitatory/cystic (syrinx) change at locations in cervical and lumbar spine with propensity for maximum deformation. Augmentation of posterior fossa volume by decompression helps by normalization of this CSF exchange dynamics but immobilizing the spinal movement theoretically will cease any dynamic volume changes thereby minimizing the destructive influence of the fluid exchange on the cord. Thus, this theory strengthens the rational of treating patients by either

  9. Zone of Proximal Development (ZPD) as an Emergent System: A Dynamic Systems Theory Perspective.

    PubMed

    Karimi-Aghdam, Saeed

    2017-03-01

    This paper sets out to present a novel construal of one of the notions of Vygotskian cultural-historical theory viz., zone of proximal development (ZPD) drawing upon dynamic systems theory. The principal thesis maintains that ZDP is an emergent and dynamic system which is engendered by a dialectical concatenation of psychogenesic and sociogenesic facets of human development over time. It is reasoned that Vygotskian cultural-historical theory of human development, by invoking dialectical logic, has transcended Cartesian substance dualism and in turn has proffered a monistic and process-anchored ontology for emerging becoming of human consciousness. Likewise, it is contended that dynamic systems theory, having assumed fluent flux of reality with a capital R as its ontological axiom, entails a consilience of cognitive and contextual conceptual schemes to describe, explain, and optimize human development. The paper concludes by drawing some interpretive conclusions in regard to ZPD from dynamic systems theory perspective.

  10. Perspective: Sloppiness and emergent theories in physics, biology, and beyond.

    PubMed

    Transtrum, Mark K; Machta, Benjamin B; Brown, Kevin S; Daniels, Bryan C; Myers, Christopher R; Sethna, James P

    2015-07-07

    Large scale models of physical phenomena demand the development of new statistical and computational tools in order to be effective. Many such models are "sloppy," i.e., exhibit behavior controlled by a relatively small number of parameter combinations. We review an information theoretic framework for analyzing sloppy models. This formalism is based on the Fisher information matrix, which is interpreted as a Riemannian metric on a parameterized space of models. Distance in this space is a measure of how distinguishable two models are based on their predictions. Sloppy model manifolds are bounded with a hierarchy of widths and extrinsic curvatures. The manifold boundary approximation can extract the simple, hidden theory from complicated sloppy models. We attribute the success of simple effective models in physics as likewise emerging from complicated processes exhibiting a low effective dimensionality. We discuss the ramifications and consequences of sloppy models for biochemistry and science more generally. We suggest that the reason our complex world is understandable is due to the same fundamental reason: simple theories of macroscopic behavior are hidden inside complicated microscopic processes.

  11. Further perspective on the theory of heteronuclear decoupling

    NASA Astrophysics Data System (ADS)

    Skinner, Thomas E.

    2014-11-01

    An exact general theory of heteronuclear decoupling is presented for spin-1/2 IS systems. RF irradiation applied to the I spins both modifies and generates additional couplings between states of the system. The recently derived equivalence between the dynamics of any N-level quantum system and a system of classical coupled harmonic oscillators makes explicit the exact physical couplings between states. Decoupling is thus more properly viewed as a complex intercoupling. The sign of antiphase magnetization plays a fundamental role in decoupling. A one-to-one correspondence is demonstrated between ± 2SyIz and the sense of the S-spin coupling evolution. Magnetization Sx is refocused to obtain the desired decoupled state when ∫ 2SyIz dt = 0 . The exact instantaneous coupling at any time during the decoupling sequence is readily obtained in terms of the system states, showing that the creation of two-spin coherence is crucial for reducing the effective scalar coupling, as required for refocusing to occur. Representative examples from new aperiodic sequences as well as standard cyclic, periodic composite-pulse and adiabatic decoupling sequences illustrate the decoupling mechanism. The more general aperiodic sequences, obtained using optimal control, realize the potential inherent in the theory for significantly improved decoupling.

  12. Further perspective on the theory of heteronuclear decoupling.

    PubMed

    Skinner, Thomas E

    2014-11-01

    An exact general theory of heteronuclear decoupling is presented for spin-1/2 IS systems. RF irradiation applied to the I spins both modifies and generates additional couplings between states of the system. The recently derived equivalence between the dynamics of any N-level quantum system and a system of classical coupled harmonic oscillators makes explicit the exact physical couplings between states. Decoupling is thus more properly viewed as a complex intercoupling. The sign of antiphase magnetization plays a fundamental role in decoupling. A one-to-one correspondence is demonstrated between ±2SyIz and the sense of the S-spin coupling evolution. Magnetization Sx is refocused to obtain the desired decoupled state when ∫2SyIzdt=0. The exact instantaneous coupling at any time during the decoupling sequence is readily obtained in terms of the system states, showing that the creation of two-spin coherence is crucial for reducing the effective scalar coupling, as required for refocusing to occur. Representative examples from new aperiodic sequences as well as standard cyclic, periodic composite-pulse and adiabatic decoupling sequences illustrate the decoupling mechanism. The more general aperiodic sequences, obtained using optimal control, realize the potential inherent in the theory for significantly improved decoupling.

  13. Negative emotions impact lateral prefrontal cortex activation during theory of mind: An fNIRS study.

    PubMed

    Himichi, Toshiyuki; Fujita, Hiroyo; Nomura, Michio

    2015-01-01

    The lateral prefrontal cortex (lPFC) plays a critical role in inhibiting self-perspective information, which is necessary for theory of mind (ToM) processing. Additionally, previous research has indicated that negative emotions interfere with lPFC activation during executive tasks. In this study, we hypothesized that negative emotions would inhibit lPFC activation during a ToM task. While female participants performed the director task following the observation of emotionally laden movies (neutral/negative/positive), their prefrontal hemodynamic activity was measured using near-infrared spectroscopy. After viewing the neutral movie, bilateral lPFC activity was significantly enhanced during ToM process compared to the control condition. In contrast, after viewing the negative movie, left lPFC activity during ToM process was significantly impaired. These results were interpreted to support the idea that negative emotions interfere with inhibition of self-perspective information through inactivation of the lPFC.

  14. Physical Activity at Daycare: Issues, Challenges and Perspectives

    ERIC Educational Resources Information Center

    van Zandvoort, Melissa; Tucker, Patricia; Irwin, Jennifer D.; Burke, Shauna M.

    2010-01-01

    This study sought to examine London, Ontario-based childcare providers' perspectives of the barriers and facilitators to physical activity participation among preschoolers (i.e. children aged 2.5-5 years) attending daycare. A heterogeneous sample of childcare providers (n = 54; response rate 47%) working at public daycare facilities in London,…

  15. Exploring Patient Activation in the Clinic: Measurement from Three Perspectives

    ERIC Educational Resources Information Center

    Ledford, Christy J. W.; Ledford, Christopher C.; Childress, Marc A.

    2013-01-01

    Objective. To further conceptualize and operationalize patient activation (PA), using measures from patient, physician, and researcher perspectives. Data Source/Study Setting. Multimethod observation in 2010 within a family medicine clinic. Study Design. Part of an intervention with 130 patients with type 2 diabetes, this observational study…

  16. Physical Activity Promotion in Call Centres: Employers' Perspectives

    ERIC Educational Resources Information Center

    Renton, Sheila J.; Lightfoot, Nancy E.; Maar, Marion A.

    2011-01-01

    This study followed a predominantly qualitative approach to explore the perspectives of employers in Sudbury, Ontario, Canada, call centres (CCs) regarding physical activity (PA) promotion in workplaces, by identifying current practices and employers' motivation to promote PA, as well as perceived facilitators and barriers. In-depth interviews…

  17. Perspectives of Aacademic Activities in Universities in Pakistan

    ERIC Educational Resources Information Center

    Ali, Akhtar; Tariq, Riaz H.; Topping, Keith J.

    2013-01-01

    The article explores perspectives on academic activities in public sector universities in Pakistan. Seven Pakistani universities yielded 290 teachers and 568 students in the sample. Factor analysis indicated five main factors in both teacher and student data sets. Both teachers and students were dissatisfied with the performance of the…

  18. Impact assessment procedures for sustainable development: A complexity theory perspective

    SciTech Connect

    Nooteboom, Sibout

    2007-10-15

    The author assumes that effective Impact Assessment procedures should somehow contribute to sustainable development. There is no widely agreed framework for evaluating such effectiveness. The author suggests that complexity theories may offer criteria. The relevant question is 'do Impact Assessment Procedures contribute to the 'requisite variety' of a social system for it to deal with changing circumstances?' Requisite variety theoretically relates to the capability of a system to deal with changes in its environment. The author reconstructs how thinking about achieving sustainable development has developed in a sequence of discourses in The Netherlands since the 1970s. Each new discourse built on the previous ones, and is supposed to have added to 'requisite variety'. The author asserts that Impact Assessment procedures may be a necessary component in such sequences and derives possible criteria for effectiveness.

  19. Hydrogen chemistry - Perspective on experiment and theory. [atmospheric chemistry

    NASA Technical Reports Server (NTRS)

    Kaufman, F.

    1975-01-01

    A review is presented of the advantages and limitations of various experimental methods for the investigation of the kinetics of hydrogen chemistry, including classic thermal and photochemical methods and the crossed molecular beam method. Special attention is given to the flash photolysis-resonance fluorescence apparatus developed by Braun et al, in which repetitive vacuum UV flashes result in the photolytic generation of the desired species, and to the discharge-flow technique. The use of various theoretical methods for the selection or elimination of kinetic data is considered in a brief discussion of the rate theory of two-body encounters and recombination-dissociation processes in neutral reactions. Recent kinetic studies of a series of OH reactions and of a major loss process for odd H in the stratosphere are summarized.

  20. Recent contributions to solar activity theory

    NASA Astrophysics Data System (ADS)

    Schuessler, M.

    1980-10-01

    The current status of the theory of photospheric magnetic fields and the solar cycle theory is reviewed. Some new observations concerning the photospheric magnetic fields, the bright X-ray spots, and the ratio of the umbra radius to the penumbra radius are discussed, and their importance for these theories and their further development is examined.

  1. Sociocultural Theories, Academic Achievement, and African American Adolescents in a Multicultural Context: A Review of the Cultural Compatibility Perspective

    ERIC Educational Resources Information Center

    Whaley, Arthur L.; Noel, La Tonya

    2012-01-01

    Several theories suggest that African American culture facilitates academic achievement, but others suggest that identifying with Black culture contributes to the achievement gap by undermining the academic performance among youth. These opposing perspectives are labeled "cultural compatibility theories" and "cultural incompatibility theories,"…

  2. Sociocultural Theories, Academic Achievement, and African American Adolescents in a Multicultural Context: A Review of the Cultural Incompatibility Perspective

    ERIC Educational Resources Information Center

    Whaley, Arthur L.; Noel, La

    2011-01-01

    Some theories have posited that African American youth are academic underachievers because of sociocultural factors. We label this point of view the cultural incompatibility perspective. Ogbu's oppositional culture theory and Steele's stereotype threat theory are selected as popular examples of this viewpoint. A critical review of the literature…

  3. Too Good to be True? Ideomotor Theory from a Computational Perspective.

    PubMed

    Herbort, Oliver; Butz, Martin V

    2012-01-01

    In recent years, Ideomotor Theory has regained widespread attention and sparked the development of a number of theories on goal-directed behavior and learning. However, there are two issues with previous studies' use of Ideomotor Theory. Although Ideomotor Theory is seen as very general, it is often studied in settings that are considerably more simplistic than most natural situations. Moreover, Ideomotor Theory's claim that effect anticipations directly trigger actions and that action-effect learning is based on the formation of direct action-effect associations is hard to address empirically. We address these points from a computational perspective. A simple computational model of Ideomotor Theory was tested in tasks with different degrees of complexity. The model evaluation showed that Ideomotor Theory is a computationally feasible approach for understanding efficient action-effect learning for goal-directed behavior if the following preconditions are met: (1) The range of potential actions and effects has to be restricted. (2) Effects have to follow actions within a short time window. (3) Actions have to be simple and may not require sequencing. The first two preconditions also limit human performance and thus support Ideomotor Theory. The last precondition can be circumvented by extending the model with more complex, indirect action generation processes. In conclusion, we suggest that Ideomotor Theory offers a comprehensive framework to understand action-effect learning. However, we also suggest that additional processes may mediate the conversion of effect anticipations into actions in many situations.

  4. Time perspective and early-onset substance use: a model based on stress-coping theory.

    PubMed

    Wills, T A; Sandy, J M; Yaeger, A M

    2001-06-01

    This research tested the relation of time perspective to early-onset substance use (tobacco, alcohol, and marijuana) with a sample of 454 elementary school students with a mean age of 11.8 years. An adaptation of the Zimbardo Time Perspective Inventory (P. G. Zimbardo & J. N. Boyd, 1999) was administered with measures derived from stress-coping theory. Independent effects showed future orientation inversely related to substance use and present orientation positively related to substance use. Structural modeling analysis indicated that the relation of time perspective measures to substance use was indirect, mediated through behavioral coping and anger coping. Proximal factors for substance use were negative affect, peer substance use, and resistance efficacy. Results are discussed with respect to epigenetic models and the role of executive functions in self-control ability.

  5. Reconstruing codependency using self-in-relation theory: a feminist perspective.

    PubMed

    Collins, B G

    1993-07-01

    Judging from advertisements for professional books, continuing education workshops, and speakers, social workers appear to believe that codependency is a problem about which they should be knowledgeable. This article traces the evolution of the codependency construct and its burgeoning popularity in the 1980s. It critically examines codependency from the perspective of researchers who have found little empirical support for the constellation of characteristics used to define the term and from the perspective of feminist analysis. In addition, the article analyzes the assumptions about health and relationships that are embedded in the concept of the codependency and contends, from the perspective of self-in-relation theory, that the concept does not provide a useful framework for social work conceptualization and intervention with women.

  6. What is "the patient perspective" in patient engagement programs? Implicit logics and parallels to feminist theories.

    PubMed

    Rowland, Paula; McMillan, Sarah; McGillicuddy, Patti; Richards, Joy

    2017-01-01

    Public and patient involvement (PPI) in health care may refer to many different processes, ranging from participating in decision-making about one's own care to participating in health services research, health policy development, or organizational reforms. Across these many forms of public and patient involvement, the conceptual and theoretical underpinnings remain poorly articulated. Instead, most public and patient involvement programs rely on policy initiatives as their conceptual frameworks. This lack of conceptual clarity participates in dilemmas of program design, implementation, and evaluation. This study contributes to the development of theoretical understandings of public and patient involvement. In particular, we focus on the deployment of patient engagement programs within health service organizations. To develop a deeper understanding of the conceptual underpinnings of these programs, we examined the concept of "the patient perspective" as used by patient engagement practitioners and participants. Specifically, we focused on the way this phrase was used in the singular: "the" patient perspective or "the" patient voice. From qualitative analysis of interviews with 20 patient advisers and 6 staff members within a large urban health network in Canada, we argue that "the patient perspective" is referred to as a particular kind of situated knowledge, specifically an embodied knowledge of vulnerability. We draw parallels between this logic of patient perspective and the logic of early feminist theory, including the concepts of standpoint theory and strong objectivity. We suggest that champions of patient engagement may learn much from the way feminist theorists have constructed their arguments and addressed critique.

  7. Margaret Newman's Theory of Health as Expanding Consciousness and a Nursing Intervention from a Unitary Perspective

    PubMed Central

    Endo, Emiko

    2017-01-01

    This mini-review aims to introduce Margaret Newman's theory of health as expanding consciousness and caring partnership as a nursing intervention. Emanating from a unitary and transformative perspective of nursing, caring partnership enables nurses to identify with cancer patients as well as to help the patients find meaning in their situation and their lives. In genuine patient–nurse interactions, both patients and nurses experience higher levels of consciousness. PMID:28217730

  8. The ecology of cancer from an evolutionary game theory perspective.

    PubMed

    Pacheco, Jorge M; Santos, Francisco C; Dingli, David

    2014-08-06

    The accumulation of somatic mutations, to which the cellular genome is permanently exposed, often leads to cancer. Analysis of any tumour shows that, besides the malignant cells, one finds other 'supporting' cells such as fibroblasts, immune cells of various types and even blood vessels. Together, these cells generate the microenvironment that enables the malignant cell population to grow and ultimately lead to disease. Therefore, understanding the dynamics of tumour growth and response to therapy is incomplete unless the interactions between the malignant cells and normal cells are investigated in the environment in which they take place. The complex interactions between cells in such an ecosystem result from the exchange of information in the form of cytokines- and adhesion-dependent interactions. Such processes impose costs and benefits to the participating cells that may be conveniently recast in the form of a game pay-off matrix. As a result, tumour progression and dynamics can be described in terms of evolutionary game theory (EGT), which provides a convenient framework in which to capture the frequency-dependent nature of ecosystem dynamics. Here, we provide a tutorial review of the central aspects of EGT, establishing a relation with the problem of cancer. Along the way, we also digress on fitness and of ways to compute it. Subsequently, we show how EGT can be applied to the study of the various manifestations and dynamics of multiple myeloma bone disease and its preceding condition known as monoclonal gammopathy of undetermined significance. We translate the complex biochemical signals into costs and benefits of different cell types, thus defining a game pay-off matrix. Then we use the well-known properties of the EGT equations to reduce the number of core parameters that characterize disease evolution. Finally, we provide an interpretation of these core parameters in terms of what their function is in the ecosystem we are describing and generate

  9. Theory and practice of clinical ethics support services: narrative and hermeneutical perspectives.

    PubMed

    Porz, Rouven; Landeweer, Elleke; Widdershoven, Guy

    2011-09-01

    In this paper we introduce narrative and hermeneutical perspectives to clinical ethics support services (CESS). We propose a threefold consideration of 'theory' and show how it is interwoven with 'practice' as we go along. First, we look at theory in its foundational role: in our case 'narrative ethics' and 'philosophical hermeneutics' provide a theoretical base for clinical ethics by focusing on human identities entangled in stories and on moral understanding as a dialogical process. Second, we consider the role of theoretical notions in helping practitioners to understand their situation in clinical ethics practice, by using notions like 'story', 'responsibility', or 'vulnerability' to make explicit and explain their practical experience. Such theoretical notions help us to interpret clinical situations from an ethical perspective and to foster moral awareness of practitioners. And, thirdly, we examine how new theoretical concepts are developed by interpreting practice, using practice to form and improve our ethical theory. In this paper, we discuss this threefold use of theory in clinical ethics support services by reflecting on our own theoretical assumptions, methodological steps and practical experiences as ethicists, and by providing examples from our daily work. In doing so, we illustrate that theory and practice are interwoven, as theoretical understanding is dependent upon practical experience, and vice-versa.

  10. Too Good to be True? Ideomotor Theory from a Computational Perspective

    PubMed Central

    Herbort, Oliver; Butz, Martin V.

    2012-01-01

    In recent years, Ideomotor Theory has regained widespread attention and sparked the development of a number of theories on goal-directed behavior and learning. However, there are two issues with previous studies’ use of Ideomotor Theory. Although Ideomotor Theory is seen as very general, it is often studied in settings that are considerably more simplistic than most natural situations. Moreover, Ideomotor Theory’s claim that effect anticipations directly trigger actions and that action-effect learning is based on the formation of direct action-effect associations is hard to address empirically. We address these points from a computational perspective. A simple computational model of Ideomotor Theory was tested in tasks with different degrees of complexity. The model evaluation showed that Ideomotor Theory is a computationally feasible approach for understanding efficient action-effect learning for goal-directed behavior if the following preconditions are met: (1) The range of potential actions and effects has to be restricted. (2) Effects have to follow actions within a short time window. (3) Actions have to be simple and may not require sequencing. The first two preconditions also limit human performance and thus support Ideomotor Theory. The last precondition can be circumvented by extending the model with more complex, indirect action generation processes. In conclusion, we suggest that Ideomotor Theory offers a comprehensive framework to understand action-effect learning. However, we also suggest that additional processes may mediate the conversion of effect anticipations into actions in many situations. PMID:23162524

  11. Perspectives of activated carbonpast, present and future

    SciTech Connect

    Carrubba, R.V.; Urbanic, J.E.; Wagner, N.J.; Zanitsch, R.H.

    1984-01-01

    Granular activated carbon has evolved a unique role as a broad spectrum solid adsorbent in its 75 years of commercial utilization. Creative applications development has established it as technology of choice for critical water purification, sweetener decolorization, air purification and solvent recovery applications, among others. New innovations in pressure swing adsorption and new vapor phase adsorbents promise equally significant future applications.

  12. Discussing Active Learning from the Practitioner's Perspective

    ERIC Educational Resources Information Center

    Bamba, Priscilla

    2015-01-01

    The purpose of this paper is to present an overview of how active learning took place in a class containing specific readings,cooperative and collaborative group work, and a writing assignment for college students at a Northern Virginia Community College campus (NVCC). Requisite knowledge, skills, learner characteristics, brain-based learning, and…

  13. A social neuroscience perspective on physical activity.

    PubMed

    Hall, Peter A; Elias, Lorin J; Fong, Geoffrey T; Harrison, Amabilis H; Borowsky, Ron; Sarty, Gordon E

    2008-08-01

    The objective of this investigation was to examine the cognitive characteristics of individuals who demonstrate successful and unsuccessful self-regulation of physical activity behavior. In Study 1, participants articulated 1-week intentions for physical activity and wore a triaxial accelerometer over the subsequent 7 days. Among those who were motivated to increase their physical activity, those who were most and least successful were administered an IQ test. In Study 2, a second sample of participants completed the same protocol and a smaller subset of matched participants attended a functional imaging (fMRI) session. In Study 1, successful self-regulators (SSRs) scored significantly higher than unsuccessful self-regulators (USRs) on a test of general cognitive ability, and this difference could not be accounted for by favorability of attitudes toward physical activity or conscientiousness. In Study 2, the IQ effect was replicated, with SSRs showing a full standard deviation advantage over USRs. In the imaging protocol, USRs showed heavier recruitment of cognitive resources relative to SSRs in the anterior cingulate and orbitofrontal cortex during performance of a Stroop task; SSRs showed heavier recruitment in the right dorsolateral prefrontal cortex.

  14. Children's understanding of the immune system: Integrating the cognitive-developmental and intuitive theories' perspectives

    NASA Astrophysics Data System (ADS)

    Landry-Boozer, Kristine L.

    Traditional cognitive-developmental researchers have provided a large body of evidence supporting the stage-like progression of children's cognitive development. Further, from this body of research comes evidence that children's understanding of HIV/AIDS develops in much the same way as their understanding of other illness-related concepts. Researchers from a newer perspective assert that biological concepts develop from intuitive theories. In general, as children are exposed to relevant content and have opportunities to organize this information, their theories become more accurate and differentiated. According to this perspective, there are no broad structural constraints on developing concepts, as asserted by cognitive developmental theorists. The purpose of the current study was two-fold: to provide support for both theoretical perspectives, while at the same time to explore children's conceptualizations of the immune system, which has not been done previously in the cognitive-developmental literature. One hundred ninety children ranging in age from 4 years old through 11 years old, and a group of adults, participated. Each participant was interviewed regarding health concepts and the body's function in maintaining health. Participants were also asked to report if they had certain experiences that would have led to relevant content exposure. Qualitative analyses were utilized to code the interviews with rubrics based on both theoretical perspectives. Quantitative analyses consisted of a series of univariate ANOVAs (and post hoc tests when appropriate) examining all three coding variables (accuracy, differentiation, and developmental level) across various age-group combinations and exposure groups. Results of these analyses provided support for both theoretical perspectives. When the data were analyzed for developmental level by all ages, a stage-like progression consistent with Piagetian stages emerged. When accuracy and differentiation were examined (intuitive

  15. Educational Theory as Theory of Culture: A Vichian Perspective on the Educational Theories of John Dewey and Kieran Egan

    ERIC Educational Resources Information Center

    Polito, Theodora

    2005-01-01

    At the center of every well-constructed theory of education is a philosophical anthropology-reasoned speculation as to the origins on man's conditions in the history of culture, especially the particular phenomenon of consciousness that underlies historical periods. Using the lens of one of the most significant theories of culture produced, we…

  16. The Significance of Turning Passive Into Active in Control Mastery Theory

    PubMed Central

    FOREMAN, STEVEN A.

    1996-01-01

    Turning passive into active was first described by Freud but was later given expanded importance by Weiss. This new conceptualization of turning passive into active as an interpersonal communication and test has made a major contribution to the clinical treatment of difficult patients. This article reviews "control mastery" theory and puts its notion of passive-into-active testing into perspective with regard to Freud’s original conception as well as other conceptions, such as identification with the aggressor and projective identification. Formulation and the treatment of patients are illustrated with clinical examples. PMID:22700271

  17. BK channel activators and their therapeutic perspectives

    PubMed Central

    Bentzen, Bo H.; Olesen, Søren-Peter; Rønn, Lars C. B.; Grunnet, Morten

    2014-01-01

    The large conductance calcium- and voltage-activated K+ channel (KCa1.1, BK, MaxiK) is ubiquitously expressed in the body, and holds the ability to integrate changes in intracellular calcium and membrane potential. This makes the BK channel an important negative feedback system linking increases in intracellular calcium to outward hyperpolarizing potassium currents. Consequently, the channel has many important physiological roles including regulation of smooth muscle tone, neurotransmitter release and neuronal excitability. Additionally, cardioprotective roles have been revealed in recent years. After a short introduction to the structure, function and regulation of BK channels, we review the small organic molecules activating BK channels and how these tool compounds have helped delineate the roles of BK channels in health and disease. PMID:25346695

  18. Perspectives on Biologically Active Camptothecin Derivatives

    PubMed Central

    Liu, Ying-Qian; Li, Wen-Qun; Morris-Natschke, Susan L.; Qian, Keduo; Yang, Liu; Zhu, Gao-Xiang; Wu, Xiao-Bing; Chen, An-Liang; Zhang, Shao-Yong; Song, Zi-Long; Lee, Kuo-Hsiung

    2015-01-01

    Camptothecins (CPTs) are cytotoxic natural alkaloids that specifically target DNA topoisomerase I. Research on CPTs has undergone a significant evolution from the initial discovery of CPT in the late 1960s through the study of synthetic small molecule derivatives to investigation of macromolecular constructs and formulations. Over the past years, intensive medicinal chemistry efforts have generated numerous CPT derivatives. Three derivatives, topotecan, irinotecan, and belotecan, are currently prescribed as anticancer drugs, and several related compounds are now in clinical trials. Interest in other biological effects, besides anticancer activity, of CPTs is also growing exponentially, as indicated by the large number of publications on the subject during the last decades. Therefore, the main focus of the present review is to provide an ample but condensed overview on various biological activities of CPT derivatives, in addition to continued up-to-date coverage of anticancer effects. PMID:25808858

  19. Activity Theory and Situated Learning Theory: Contrasting Views of Educational Practice

    ERIC Educational Resources Information Center

    Arnseth, Hans Christian

    2008-01-01

    The purpose of this article is to offer a critical discussion of the practice turn in contemporary educational research. In order to make the discussion specific, I use two influential theories, namely activity theory and situated learning theory. They both turn to the notion of practice in order to overcome the limitations of mentalist and…

  20. Sociocultural Dynamics of ESL Learning (De)Motivation: An Activity Theory Analysis of Two Adult Korean Immigrants

    ERIC Educational Resources Information Center

    Kim, Tae-Young

    2011-01-01

    This study examines the longitudinal trajectories of two Korean ESL immigrants' L2 learning motivation from an Activity Theory perspective. Two highly skilled immigrants participated in monthly semistructured interviews over a period of 10 months. The research questions are as follows: (1) How does the relationship between ESL learners and their…

  1. Therapeutic perspectives of epigenetically active nutrients.

    PubMed

    Remely, M; Lovrecic, L; de la Garza, A L; Migliore, L; Peterlin, B; Milagro, F I; Martinez, A J; Haslberger, A G

    2015-06-01

    Many nutrients are known for a wide range of activities in prevention and alleviation of various diseases. Recently, their potential role in regulating human health through effects on epigenetics has become evident, although specific mechanisms are still unclear. Thus, nutriepigenetics/nutriepigenomics has emerged as a new and promising field in current epigenetics research in the past few years. In particular, polyphenols, as part of the central dynamic interaction between the genome and the environment with specificity at physiological concentrations, are well known to affect mechanisms underlying human health. This review summarizes the effects of dietary compounds on epigenetic mechanisms in the regulation of gene expression including expression of enzymes and other molecules responsible for drug absorption, distribution, metabolism and excretion in cancer, metabolic syndrome, neurodegenerative disorders and hormonal dysfunction.

  2. Therapeutic perspectives of epigenetically active nutrients

    PubMed Central

    Remely, M; Lovrecic, L; de la Garza, A L; Migliore, L; Peterlin, B; Milagro, F I; Martinez, A J; Haslberger, A G

    2015-01-01

    Many nutrients are known for a wide range of activities in prevention and alleviation of various diseases. Recently, their potential role in regulating human health through effects on epigenetics has become evident, although specific mechanisms are still unclear. Thus, nutriepigenetics/nutriepigenomics has emerged as a new and promising field in current epigenetics research in the past few years. In particular, polyphenols, as part of the central dynamic interaction between the genome and the environment with specificity at physiological concentrations, are well known to affect mechanisms underlying human health. This review summarizes the effects of dietary compounds on epigenetic mechanisms in the regulation of gene expression including expression of enzymes and other molecules responsible for drug absorption, distribution, metabolism and excretion in cancer, metabolic syndrome, neurodegenerative disorders and hormonal dysfunction. PMID:25046997

  3. CTE Teachers' Perspectives on the Process of CTE and Science Content Integration: A Grounded Theory

    NASA Astrophysics Data System (ADS)

    Spindler, Matthew Kenneth

    The integration of career and technical education (CTE) and academic curricular content that capitalizes on natural and inherent connections represents a challenge for CTE professionals. The research question that was used to guide the current study was: What are CTE teachers' perspectives of and experiences with the process of CTE and science content integration? And more specifically, to generate a grounded theory which explicates the process of CTE and science content integration from the perspective of CTE teachers. The CTE teachers expressed that the process of CTE and science content integration was a process of evolutionizing. From the perspective of the CTE teachers involved integrating CTE and science content resulted in their programs of study being adapted into something different than they were before the process of integration was begun. The CTE teachers revealed that the evolutions in their programs of study and themselves were associated with three other categories within the grounded theory: (a) connecting; (b) enacting; and (c) futuring. The process of CTE and science content integration represents a deep and complex episode for CTE teachers. The process of CTE and science content integration requires connecting to others, putting ideas into action, and an orienting towards the future.

  4. Community Service-Learning and Cultural-Historical Activity Theory

    ERIC Educational Resources Information Center

    Taylor, Alison

    2014-01-01

    This paper explores the potential of cultural-historical activity theory (CHAT), to provide new insights into community service-learning (CSL) in higher education. While CSL literature acknowledges the influences of John Dewey and Paolo Freire, discussion of the potential contribution of cultural-historical activity theory, rooted in the work of…

  5. Teaching Sociological Theory through Active Learning: The Irrigation Exercise

    ERIC Educational Resources Information Center

    Holtzman, Mellisa

    2005-01-01

    For students, theory is often one of the most daunting aspects of sociology--it seems abstract, removed from the concrete events of their everyday lives, and therefore intimidating. In an attempt to break down student resistance to theory, instructors are increasingly turning to active learning approaches. Active learning exercises, then, appear…

  6. A Guided Inquiry Activity for Teaching Ligand Field Theory

    ERIC Educational Resources Information Center

    Johnson, Brian J.; Graham, Kate J.

    2015-01-01

    This paper will describe a guided inquiry activity for teaching ligand field theory. Previous research suggests the guided inquiry approach is highly effective for student learning. This activity familiarizes students with the key concepts of molecular orbital theory applied to coordination complexes. Students will learn to identify factors that…

  7. Active and successful aging: a European policy perspective.

    PubMed

    Foster, Liam; Walker, Alan

    2015-02-01

    Over the past two decades, "active aging" has emerged in Europe as the foremost policy response to the challenges of population aging. This article examines the concept of active aging and how it differs from that of "successful aging." In particular, it shows how active aging presents a more holistic, life course-oriented approach than successful aging. We provide a critical perspective on active aging too by, first, tracing its emergence in Europe and then showing how, in practice, it has been dominated by a narrow economic or productivist perspective that prioritizes the extension of working life. It has also been gender blind. Nonetheless, it is argued that an active aging approach has the potential to enable countries to respond successfully to the challenges of population aging because of its comprehensive focus and emphasis on societal as well as individual responsibility. Finally, we set out the basic principles that need to be followed if the full potential of active aging is to be achieved.

  8. Active and Successful Aging: A European Policy Perspective

    PubMed Central

    Foster, Liam; Walker, Alan

    2015-01-01

    Over the past two decades, “active aging” has emerged in Europe as the foremost policy response to the challenges of population aging. This article examines the concept of active aging and how it differs from that of “successful aging.” In particular, it shows how active aging presents a more holistic, life course–oriented approach than successful aging. We provide a critical perspective on active aging too by, first, tracing its emergence in Europe and then showing how, in practice, it has been dominated by a narrow economic or productivist perspective that prioritizes the extension of working life. It has also been gender blind. Nonetheless, it is argued that an active aging approach has the potential to enable countries to respond successfully to the challenges of population aging because of its comprehensive focus and emphasis on societal as well as individual responsibility. Finally, we set out the basic principles that need to be followed if the full potential of active aging is to be achieved. PMID:24846882

  9. Physical activity perceptions, context, barriers, and facilitators from a Hispanic child's perspective

    PubMed Central

    Ross, Sharon E. Taverno; Francis, Lori A.

    2016-01-01

    Background In order to develop effective physical activity interventions and to address the burden of obesity in Hispanic children, qualitative studies are needed to build descriptive theory and expand the state of the science. The purpose of this study is to describe physical activity perceptions, context, facilitators, and barriers from the perspective of Hispanic immigrant-origin children. Method This in-depth, ethnographic study included 14, 6- to 11-year old, first- and second- generation Hispanic children recruited from an afterschool program in Southeastern Pennsylvania, USA. Methods included child observation, field notes, semi-structured interviews, and a PhotoVoice activity. Transcripts and field notes were coded and analyzed using the constant comparison method to identify overarching themes and patterns in the data. Results Data analysis yielded four overarching themes regarding children's perspectives on physical activity. Children engaged in a variety of physical activities and sedentary behaviors, which differed by physical (e.g., park, outside home, and afterschool programs) and social (e.g., parents, siblings, and friends) contexts. Children discussed specific benefits of physical activity. Children's negative attitudes toward physical activity were related to physical discomfort, low athletic competence, and safety concerns. Children perceived physical activity and play to be one in the same, and “fun” was identified as a primary driver of physical activity preferences. The facilitators and barriers to physical activity were related to specific parent/home, school, and neighborhood factors. Conclusion Findings from this study suggest that an emphasis on fun and active play, while taking into account family and neighborhood context, may be a desirable intervention approach in Hispanic immigrant-origin children. This study lays the groundwork for future studies to further explore some of the themes identified here to better understand children

  10. Choreographing Theory: An Analysis of Edouard Lock's "Amelia" (2002) Questioning the Limits of Feminist and Poststructuralist Perspectives

    ERIC Educational Resources Information Center

    Ireland, Ruby

    2009-01-01

    Edouard Lock's dance film "Amelia" (2002) is the focus of this essay. Second-wave feminist and poststructuralist perspectives inform the analysis of this piece of contemporary dance. Laura Mulvey's male gaze theory and Julia Kristeva's theory of the semiotic and symbolic realms of representation are explored and critiqued, whilst Jacques Derrida's…

  11. Learning "in" or "with" Games? Quality Criteria for Digital Learning Games from the Perspectives of Learning, Emotion, and Motivation Theory

    ERIC Educational Resources Information Center

    Hense, Jan; Mandl, Heinz

    2012-01-01

    This conceptual paper aims to clarify the theoretical underpinnings of game based learning (GBL) and learning with digital learning games (DLGs). To do so, it analyses learning of game related skills and contents, which occurs constantly during playing conventional entertainment games, from three perspectives: learning theory, emotion theory, and…

  12. Theory of mind in dogs: is the perspective-taking task a good test?

    PubMed

    Roberts, William A; Macpherson, Krista

    2011-12-01

    Udell, Dorey, and Wynne (in press) have reported an experiment in which wolves, shelter dogs, and pet dogs all showed a significant preference for begging from a person who faced them (seer) over a person whose back was turned to them (blind experimenter). On tests with the blind person's eyes covered with a bucket, a book, or a camera, pet dogs showed more preference for the seer than did wolves and shelter dogs. We agree with the authors' position that most of these findings are best explained by preexperimental learning experienced by the subjects. We argue, however, that the perspective-taking task is not a good test of the domestication theory or of the theory of mind in dogs. The problem we see is that use of the perspective-taking task, combined with preexperimental learning in all the subjects, strongly biases the outcome in favor of a behavioral learning interpretation. Tasks less influenced by preexperimental training would provide less confounded tests of domestication and theory of mind.

  13. Critical Curriculum Theory and Slow Ecopedagogical Activism

    ERIC Educational Resources Information Center

    Payne, Phillip G.

    2015-01-01

    Enacting a critical environmental education curriculum theory with 8- to 9-year-old children in 1978 is now "restoried" in a "history of the present/future" like "case study" for prosecuting five interrelated problems confronting progress in environmental education and its research. They are: the intense heat of the…

  14. Cross-cultural perspectives: implications for attachment theory and family therapy.

    PubMed

    Minuchin, Patricia

    2002-01-01

    Cross-cultural perspectives have always been useful for understanding behavior. They clarify the distinction between aspects that are essentially part of the human condition and those that are the most responsive to variation. The interesting article by Rothbaum and his colleagues is in that tradition, contrasting the cultural values and family patterns in Japanese society with those of Western cultures, including our own, and suggesting that these differences shape the nature and course of attachment. It stimulates questions about what we have taken for granted in our theories and in our evaluations of dysfunctional behavior.

  15. Active cell mechanics: Measurement and theory.

    PubMed

    Ahmed, Wylie W; Fodor, Étienne; Betz, Timo

    2015-11-01

    Living cells are active mechanical systems that are able to generate forces. Their structure and shape are primarily determined by biopolymer filaments and molecular motors that form the cytoskeleton. Active force generation requires constant consumption of energy to maintain the nonequilibrium activity to drive organization and transport processes necessary for their function. To understand this activity it is necessary to develop new approaches to probe the underlying physical processes. Active cell mechanics incorporates active molecular-scale force generation into the traditional framework of mechanics of materials. This review highlights recent experimental and theoretical developments towards understanding active cell mechanics. We focus primarily on intracellular mechanical measurements and theoretical advances utilizing the Langevin framework. These developing approaches allow a quantitative understanding of nonequilibrium mechanical activity in living cells. This article is part of a Special Issue entitled: Mechanobiology.

  16. Stellar magnetic structure and activity /theory/

    NASA Astrophysics Data System (ADS)

    Weiss, N. O.

    Both the overall behavior of the solar cycle and the underlying fine structure of magnetic fields in the sun have been studied mathematically in some detail. These theories are summarized and different phenomenological models of the solar cycle are reviewed. In order to provide a description of the magnetic fields in late-type stars it is necessary to extrapolate boldly from what is known about the sun. In this way field strengths and configurations can be estimated.

  17. Active, capable, and potentially active faults - a paleoseismic perspective

    USGS Publications Warehouse

    Machette, M.N.

    2000-01-01

    Maps of faults (geologically defined source zones) may portray seismic hazards in a wide range of completeness depending on which types of faults are shown. Three fault terms - active, capable, and potential - are used in a variety of ways for different reasons or applications. Nevertheless, to be useful for seismic-hazards analysis, fault maps should encompass a time interval that includes several earthquake cycles. For example, if the common recurrence in an area is 20,000-50,000 years, then maps should include faults that are 50,000-100,000 years old (two to five typical earthquake cycles), thus allowing for temporal variability in slip rate and recurrence intervals. Conversely, in more active areas such as plate boundaries, maps showing faults that are <10,000 years old should include those with at least 2 to as many as 20 paleoearthquakes. For the International Lithosphere Programs' Task Group II-2 Project on Major Active Faults of the World our maps and database will show five age categories and four slip rate categories that allow one to select differing time spans and activity rates for seismic-hazard analysis depending on tectonic regime. The maps are accompanied by a database that describes evidence for Quaternary faulting, geomorphic expression, and paleoseismic parameters (slip rate, recurrence interval and time of most recent surface faulting). These maps and databases provide an inventory of faults that would be defined as active, capable, and potentially active for seismic-hazard assessments.

  18. Parental involvement in the habilitation process following children's cochlear implantation: an action theory perspective.

    PubMed

    Zaidman-Zait, Anat; Young, Richard A

    2008-01-01

    Action theory and the qualitative action-project method are used in this study to address and illustrate the complexity of parenting children who have received cochlear implants (CIs) as well as the intentionality of parents engaged in that process. "Action" refers to individual and joint goal-directed and intentional behaviors. Action theory has the advantage of using the perspectives provided by manifest behavior, internal processes, and social meaning in the analysis of action. Two cases are used to describe the individual and joint actions and projects, as related to parents' involvement in the habilitation process of children's postcochlear implantation. These joint projects are described at the levels of meanings/goals, functional processes, behaviors, structural support, and resources. From the rich descriptions and analysis of the cases, we draw potentially illuminative implications for the "current thinking" in relation to parenting children with CIs.

  19. Personality and racial/ethnic relations: a perspective from Cognitive-Affective Personality System (CAPS) Theory.

    PubMed

    Mendoza-Denton, Rodolfo; Goldman-Flythe, Michelle

    2009-10-01

    The five articles in this special section examine personality and racial/ethnic relations from the perspective of Mischel and Shoda's Cognitive-Affective Personality System (CAPS) Theory. In this introductory piece, we first provide a primer on CAPS theory. In particular, we try to highlight the role that context plays in the construction and manifestation of personality as well as the dynamic ways that people interpret and react to input from their environment. We then review research on race-based rejection sensitivity as a programmatic illustration of the role expectancies play in racial/ethnic relations. Finally, we summarize and tie together the articles that comprise this section via a set of emergent themes that are common to the present contributions.

  20. Gender bias in leader evaluations: merging implicit theories and role congruity perspectives.

    PubMed

    Hoyt, Crystal L; Burnette, Jeni L

    2013-10-01

    This research extends our understanding of gender bias in leader evaluations by merging role congruity and implicit theory perspectives. We tested and found support for the prediction that the link between people's attitudes regarding women in authority and their subsequent gender-biased leader evaluations is significantly stronger for entity theorists (those who believe attributes are fixed) relative to incremental theorists (those who believe attributes are malleable). In Study 1, 147 participants evaluated male and female gubernatorial candidates. Results supported predictions, demonstrating that traditional attitudes toward women in authority significantly predicted a pro-male gender bias in leader evaluations (and progressive attitudes predicted a pro-female gender bias) with an especially strong effect for those with more entity-oriented, relative to incrementally oriented person theories. Study 2 (119 participants) replicated these findings and demonstrated the mediating role of these attitudes in linking gender stereotypes and leader role expectations to biased evaluations.

  1. Object relations theory and activity theory: a proposed link by way of the procedural sequence model.

    PubMed

    Ryle, A

    1991-12-01

    An account of object relations theory (ORT), represented in terms of the procedural sequence model (PSM), is compared to the ideas of Vygotsky and activity theory (AT). The two models are seen to be compatible and complementary and their combination offers a satisfactory account of human psychology, appropriate for the understanding and integration of psychotherapy.

  2. Theory of Mind and embedding of perspective: A psychological test of a literary "sweet spot"

    PubMed

    Whalen, D H; Zunshine, Lisa; Holquist, Michael

    2012-01-01

    Theory of Mind (ToM) has been proposed to explain social interactions, with real people but also with fictional characters, by interpreting their mind as well as our own. "Perspective embedding" exploits ToM by placing events in characters' minds (e.g., "he remembered she was home"). Three levels of embedment, common in literature, may be a "sweet spot" that provides enough information about a character's motivation, but not a confusing over-abundance. Here, we use short vignettes with 1 or 3 characters and 0-5 levels of perspective embedding in two reading studies to see whether these preferences might be related to processing ease. Self-paced readers were fastest with one level of embedment, increasingly slower as embedment increased; vignettes without embedment were approximately as slow as level 4. With both self-paced and imposed timing, error rates on probe questions increased only at the fifth level. Readers seem to prefer literary texts in which ToM operations are obvious due to embedding of perspectives within the narrative but still somewhat challenging.

  3. Changes in visual perspective influence brain activity patterns during cognitive perspective-taking of other people's pain.

    PubMed

    Vistoli, Damien; Achim, Amélie M; Lavoie, Marie-Audrey; Jackson, Philip L

    2016-05-01

    Empathy refers to our capacity to share and understand the emotional states of others. It relies on two main processes according to existing models: an effortless affective sharing process based on neural resonance and a more effortful cognitive perspective-taking process enabling the ability to imagine and understand how others feel in specific situations. Until now, studies have focused on factors influencing the affective sharing process but little is known about those influencing the cognitive perspective-taking process and the related brain activations during vicarious pain. In the present fMRI study, we used the well-known physical pain observation task to examine whether the visual perspective can influence, in a bottom-up way, the brain regions involved in taking others' cognitive perspective to attribute their level of pain. We used a pseudo-dynamic version of this classic task which features hands in painful or neutral daily life situations while orthogonally manipulating: (1) the visual perspective with which hands were presented (first-person versus third-person conditions) and (2) the explicit instructions to imagine oneself or an unknown person in those situations (Self versus Other conditions). The cognitive perspective-taking process was investigated by comparing Other and Self conditions. When examined across both visual perspectives, this comparison showed no supra-threshold activation. Instead, the Other versus Self comparison led to a specific recruitment of the bilateral temporo-parietal junction when hands were presented according to a first-person (but not third-person) visual perspective. The present findings identify the visual perspective as a factor that modulates the neural activations related to cognitive perspective-taking during vicarious pain and show that this complex cognitive process can be influenced by perceptual stages of information processing.

  4. Theory of mind and wisdom: The development of different forms of perspective-taking in late adulthood.

    PubMed

    Rakoczy, Hannes; Wandt, Raphaela; Thomas, Stefanie; Nowak, Jana; Kunzmann, Ute

    2017-03-07

    How does perspective-taking develop over the lifespan? This question has been investigated in two separate research traditions, dealing with theory of mind (ToM) and wisdom, respectively. Operating in almost complete isolation from each other, and using rather different conceptual approaches, these two traditions have produced seemingly contradictory results: While perspective-taking has been consistently found to decline in old age in ToM research, studies on wisdom have mostly found that perspective-taking remains constant or sometimes even increases in later adulthood. This study sought to integrate these two lines of research and clarify the seemingly contradictory patterns of findings by systematically testing for both forms of perspective-taking and their potential cognitive foundations. The results revealed (1) the dissociation in developmental patterns between ToM perspective-taking (declining with age) and wisdom-related perspective-taking (no decline with age) also held - documented here for the first time - in one and the same sample of younger versus older adults; (2) this dissociation was of limited generality: It did not (or only partly) hold once the material of the two types of tasks was more closely matched; and (3) the divergent developmental patterns of ToM perspective-taking versus wisdom-related perspective-taking could be accounted for to some degree by the fact that only TOM perspective-taking was related to developmental changes in fluid intelligence.

  5. Managers' Informal Learning: A Trait Activation Theory Perspective

    ERIC Educational Resources Information Center

    Noe, Raymond A.; Tews, Michael J.; Michel, John W.

    2017-01-01

    Research focusing on how individual differences and the work context influence informal learning is growing but incomplete. This study contributes to our understanding of the antecedents of informal learning by examining the relationships of goal orientation, job autonomy and training climate with informal learning. Based on trait activation…

  6. Reading the Freudian theory of sexual drives from a functional neuroimaging perspective

    PubMed Central

    Stoléru, Serge

    2014-01-01

    One of the essential tasks of neuropsychoanalysis is to investigate the neural correlates of sexual drives. Here, we consider the four defining characteristics of sexual drives as delineated by Freud: their pressure, aim, object, and source. We systematically examine the relations between these characteristics and the four-component neurophenomenological model that we have proposed based on functional neuroimaging studies, which comprises a cognitive, a motivational, an emotional and an autonomic/neuroendocrine component. Functional neuroimaging studies of sexual arousal (SA) have thrown a new light on the four fundamental characteristics of sexual drives by identifying their potential neural correlates. While these studies are essentially consistent with the Freudian model of drives, the main difference emerging between the functional neuroimaging perspective on sexual drives and the Freudian theory relates to the source of drives. From a functional neuroimaging perspective, sources of sexual drives, conceived by psychoanalysis as processes of excitation occurring in a peripheral organ, do not seem, at least in adult subjects, to be an essential part of the determinants of SA. It is rather the central processing of visual or genital stimuli that gives to these stimuli their sexually arousing and sexually pleasurable character. Finally, based on functional neuroimaging results, some possible improvements to the psychoanalytic theory of sexual drives are suggested. PMID:24672467

  7. Links Among Cognitive Empathy, Theory of Mind, and Affective Perspective Taking by Young Children.

    PubMed

    Bensalah, Leïla; Caillies, Stéphanie; Anduze, Marion

    2016-01-01

    The authors investigated the development of the affective, cognitive, and behavioral components of empathy in preschoolers, specifically examining how cognitive empathy is linked to theory of mind and affective perspective taking. Participants were 158 children aged 4-6 years. They listened to narratives and then answered questions about the protagonists' emotions. The affective component was probed with the question, "How do you feel seeing the little girl/boy?"; the cognitive component with the question, "Why do you feel [emotion shared with the character]?"; and the behavioral one with the question, "What would you do if you were next to the little boy/girl [experiencing an emotional scenario]?" Results revealed a developmental sequence in the self-focused attribution of cognitive empathy, and a trend toward a developmental sequence for behavioral empathy, which underwent a slight linear increase between 4 and 6 years old. Affective empathy remained stable. More interestingly, they showed that cognitive empathy is linked to both theory of mind and affective perspective taking.

  8. Spectral perspective on the electromagnetic activity of cells.

    PubMed

    Kučera, Ondrej; Červinková, Kateřina; Nerudová, Michaela; Cifra, Michal

    2015-01-01

    In this mini-review, we summarize the current hypotheses, theories and experimental evidence concerning the electromagnetic activity of living cells. We systematically classify the bio-electromagnetic phenomena in terms of frequency and we assess their general acceptance in scientific community. We show that the electromagnetic activity of cells is well established in the low frequency range below 1 kHz and on optical wavelengths, while there is only limited evidence for bio-electromagnetic processes in radio- frequency and millimeter-wave ranges. This lack of generally accepted theory or trustful experimental results is the cause for controversy which accompanies this topic. We conclude our review with the discussion of the relevance of the electromagnetic activity of cells to human medicine.

  9. Perspectives on Physical Activity and Exercise Among Appalachian Youth

    PubMed Central

    Swanson, Mark; Schoenberg, Nancy E.; Erwin, Heather; Davis, Rian E.

    2015-01-01

    Background Most children in the United States receive far less physical activity (PA) than is optimal. In rural, under resourced areas of Appalachian Kentucky, physical inactivity rates are significantly higher than national levels. We sought to understand children’s perceptions of PA, with the goal of developing culturally appropriate programming to increase PA. Methods During 11 focus groups, we explored perspectives on PA among 63 Appalachian children, ages 8–17. Sessions were tape recorded, transcribed, content analyzed, and subjected to verification procedures. Results Several perspectives on PA emerged among these rural Appalachian youth, including the clear distinction between PA (viewed as positive) and exercise (viewed as negative) and an emphasis on time and resource factors as barriers to adequate PA. Additional PA determinants expressed in the focus groups are similar to those of other populations. We include children’s recommendations for appealing PA programs. Conclusions Appalachian and other rural residents contend with the loss of rural health advantages (due to declines in farming/other occupational and avocational transitions). At the same time, Appalachian residents have not benefitted from urban PA facilitators (sidewalks, recreational facilities, clubs and organized leisure activities). Addressing low PA levels requires extensive community input and creative programming. PMID:22397810

  10. Perspectives from space: NASA classroom information and activities

    NASA Technical Reports Server (NTRS)

    1992-01-01

    This booklet contains the information and classroom activities included on the backs of the eight poster series, 'Perspectives From Space'. The first series, Earth, An Integrated System, contains information on global ecology, remote sensing from space, data products, earth modeling, and international environmental treaties. The second series, Patterns Among Planets, contains information on the solar system, planetary processes, impacts and atmospheres, and a classroom activity on Jupiter's satellite system. The third series, Our Place In The Cosmos, contains information on the scale of the universe, origins of the universe, mission to the universe, and three classroom activities. The fourth series, Our Sun, The Nearest Star, contains information on the Sun. The fifth series, Oasis Of Life, contains information on the development of life, chemical and biological evolution on Earth and the search for other life in the universe. The sixth series, The Influence Of Gravity, contains information on Newton's Law of Gravity, space and microgravity, microgravity environment, and classroom activities on gravity. The seventh series, The Spirit Of Exploration, contains information on space exploration, the Apollo Program, future exploration activities, and two classroom activities. The eighth series, Global Cooperation, contains information on rocketry, the space race, and multi-nation exploration projects.

  11. Advocacy for active transport: advocate and city council perspectives

    PubMed Central

    2010-01-01

    Background Effective advocacy is an important part of efforts to increase population participation in physical activity. Research about effective health advocacy is scarce, however, the health sector can learn from the experiences and knowledge of community advocates and those who are on the receiving end of this advocacy. The aim of this study is to explore advocacy for active transport from the perspectives of community advocates and representatives from City councils. Methods Cycling and walking advocates were identified from the local contact list of Cycling Advocates Network and Living Streets Aotearoa. Semi-structured telephone interviews were conducted with cycle and walking advocates from throughout New Zealand. Advocates also nominated a suitable council officer at their local City council to be interviewed. Interviews were recorded and transcribed and categories of responses for each of the questions created. Results Several processes were used by advocates to engage with council staff, including formal council submissions, meetings, stakeholder forums and partnership in running community events promoting active transport. Several other agencies were identified as being influential for active transport, some as potential coalition partners and others as potential adversaries. Barriers to improving conditions for active transport included a lack of funding, a lack of will-power among either council staff or councillors, limited council staff capacity (time or training) and a culture of providing infrastructure for motor vehicles instead of people. Several suggestions were made about how the health sector could contribute to advocacy efforts, including encouraging political commitment, engaging the media, communicating the potential health benefits of active transport to the general public and being role models in terms of personal travel mode choice and having workplaces that support participation in active transport. Conclusions There is potential for the

  12. Femtosecond spectral interferometry of optical activity: Theory

    NASA Astrophysics Data System (ADS)

    Rhee, Hanju; Ha, Jeong-Hyon; Jeon, Seung-Joon; Cho, Minhaeng

    2008-09-01

    Optical activities such as circular dichroism (CD) and optical rotatory dispersion (ORD) are manifested by almost all natural products. However, the CD is an extremely weak effect so that time-resolved CD spectroscopy has been found to be experimentally difficult and even impossible for vibrational CD with current technology. Here, we show that the weak-signal and nonzero background problems can be overcome by heterodyned spectral interferometric detection of the phase and amplitude of optical activity free-induction-decay (OA FID) field. A detailed theoretical description and a cross-polarization scheme for selectively measuring the OA FID are presented and discussed. It is shown that the parallel and perpendicular electric fields when the solution sample contains chiral molecules are coupled to each other. Therefore, simultaneous spectral interferometric measurements of the parallel and perpendicular FID fields can provide the complex susceptibility, which is associated with the circular dichroism and optical rotatory dispersion as its imaginary and real parts, respectively. On the basis of the theoretical results, to examine its experimental possibility, we present numerical simulations for a model system. We anticipate the method discussed here to be a valuable tool for detecting electronic or vibrational optical activity in femtosecond time scale.

  13. Understanding schizophrenia as a disorder of consciousness: biological correlates and translational implications from quantum theory perspectives.

    PubMed

    Venkatasubramanian, Ganesan

    2015-04-30

    From neurophenomenological perspectives, schizophrenia has been conceptualized as "a disorder with heterogeneous manifestations that can be integrally understood to involve fundamental perturbations in consciousness". While these theoretical constructs based on consciousness facilitate understanding the 'gestalt' of schizophrenia, systematic research to unravel translational implications of these models is warranted. To address this, one needs to begin with exploration of plausible biological underpinnings of "perturbed consciousness" in schizophrenia. In this context, an attractive proposition to understand the biology of consciousness is "the orchestrated object reduction (Orch-OR) theory" which invokes quantum processes in the microtubules of neurons. The Orch-OR model is particularly important for understanding schizophrenia especially due to the shared 'scaffold' of microtubules. The initial sections of this review focus on the compelling evidence to support the view that "schizophrenia is a disorder of consciousness" through critical summary of the studies that have demonstrated self-abnormalities, aberrant time perception as well as dysfunctional intentional binding in this disorder. Subsequently, these findings are linked with 'Orch-OR theory' through the research evidence for aberrant neural oscillations as well as microtubule abnormalities observed in schizophrenia. Further sections emphasize the applicability and translational implications of Orch-OR theory in the context of schizophrenia and elucidate the relevance of quantum biology to understand the origins of this puzzling disorder as "fundamental disturbances in consciousness".

  14. Perspective: Fifty years of density-functional theory in chemical physics.

    PubMed

    Becke, Axel D

    2014-05-14

    Since its formal inception in 1964-1965, Kohn-Sham density-functional theory (KS-DFT) has become the most popular electronic structure method in computational physics and chemistry. Its popularity stems from its beautifully simple conceptual framework and computational elegance. The rise of KS-DFT in chemical physics began in earnest in the mid 1980s, when crucial developments in its exchange-correlation term gave the theory predictive power competitive with well-developed wave-function methods. Today KS-DFT finds itself under increasing pressure to deliver higher and higher accuracy and to adapt to ever more challenging problems. If we are not mindful, however, these pressures may submerge the theory in the wave-function sea. KS-DFT might be lost. I am hopeful the Kohn-Sham philosophical, theoretical, and computational framework can be preserved. This Perspective outlines the history, basic concepts, and present status of KS-DFT in chemical physics, and offers suggestions for its future development.

  15. Perspective: Fifty years of density-functional theory in chemical physics

    SciTech Connect

    Becke, Axel D.

    2014-05-14

    Since its formal inception in 1964–1965, Kohn-Sham density-functional theory (KS-DFT) has become the most popular electronic structure method in computational physics and chemistry. Its popularity stems from its beautifully simple conceptual framework and computational elegance. The rise of KS-DFT in chemical physics began in earnest in the mid 1980s, when crucial developments in its exchange-correlation term gave the theory predictive power competitive with well-developed wave-function methods. Today KS-DFT finds itself under increasing pressure to deliver higher and higher accuracy and to adapt to ever more challenging problems. If we are not mindful, however, these pressures may submerge the theory in the wave-function sea. KS-DFT might be lost. I am hopeful the Kohn-Sham philosophical, theoretical, and computational framework can be preserved. This Perspective outlines the history, basic concepts, and present status of KS-DFT in chemical physics, and offers suggestions for its future development.

  16. Does reading keep you thin? Leisure activities, cultural tastes, and body weight in comparative perspective

    PubMed Central

    Pampel, Fred C.

    2011-01-01

    While sedentary leisure-time activities such as reading, going to movies, attending cultural events, attending sporting events, watching TV, listening to music, and socializing with friends would seem to contribute to excess weight, a perspective focusing on SES differences in cultural tastes suggests the opposite, that some sedentary activities are associated with lower rather than higher body weight. This study aims to test theories of cultural distinction by examining relationships between leisure-time activities and body weight. Using 2007 data on 17 nations from the International Social Survey Program, the analysis estimates relationships between the body mass index and varied leisure-time activities while controlling for SES, physical activities, and sociodemographic variables. Net of controls for SES and physical activities, participation time in cultural activities is associated with lower rather than higher body weight, particularly in high-income nations. The results suggest that both cultural activities and body weight reflect forms of distinction that separate SES-based lifestyles. PMID:21707664

  17. Hospital chief executive officer perspective on professional development activities.

    PubMed

    Khaliq, Amir A; Walston, Stephen L

    2010-01-01

    A study was undertaken to develop understanding of hospital chief executive officers' (CEOs') perspectives concerning importance and impact of professional development activities in US hospitals. It was also intended to reveal CEO preferences for various modalities of professional development including membership in professional societies, attainment of credentials, and coaching by mentors. A mail survey of 582 hospital CEOs made use of a pilot-tested questionnaire with 30 close ended multipart questions. Results showed that most CEOs assigned a high level of importance to professional development and favored conferences, seminars, and networking opportunities, but low priority assigned to online activities such as webinars. They reported lending support to senior managers for participation in these activities by providing financial resources and by allowing time off to engage in these activities. The respondents indicated that the importance of various modalities of professional development has either increased or remained high over the recent 5 years. Conclusions suggest that verifiable quantitative data are needed for understanding of the frequency of participation and resource commitment of health care organizations toward the professional development of CEOs and senior managers. The results of this perceptual study reveal a high level of importance accorded to various forms of professional development activities by the participating CEOs.

  18. PDAs as Lifelong Learning Tools: An Activity Theory Based Analysis

    ERIC Educational Resources Information Center

    Waycott, Jenny; Jones, Ann; Scanlon, Eileen

    2005-01-01

    This paper describes the use of an activity theory (AT) framework to analyze the ways that distance part time learners and mobile workers adapted and appropriated mobile devices for their activities and in turn how their use of these new tools changed the ways that they carried out their learning or their work. It is argued that there are two key…

  19. Project-Based Language Learning: An Activity Theory Analysis

    ERIC Educational Resources Information Center

    Gibbes, Marina; Carson, Lorna

    2014-01-01

    This paper reports on an investigation of project-based language learning (PBLL) in a university language programme. Learner reflections of project work were analysed through Activity Theory, where tool-mediated activity is understood as the central unit of analysis for human interaction. Data were categorised according to the components of human…

  20. A brief perspective on the diverging theories of lymphatic targeting with colloids

    PubMed Central

    Siram, Karthik; Marslin, Gregory; Raghavan, Chellan Vijaya; Balakumar, Krishnamoorthy; Rahman, Habibur; Franklin, Gregory

    2016-01-01

    For targeted delivery of colloids to the lymphatic system, the colloids should efficiently reach and remain in the lymphatics for a considerable period of time. As per the current knowledge, diffusion and phagocytosis are the two mechanisms through which colloids reach the lymphatic system. Several parameters including particle size and charge have been shown to affect the direct uptake of colloids by the lymphatic system. Although many researchers attached ligands on the surface of colloids to promote phagocytosis-mediated lymphatic delivery, another school of thought suggests avoidance of phagocytosis by use of carriers like polyethylene glycol (PEG)ylated colloids to impart stealth attributes and evade phagocytosis. In this perspective, we weigh up the paradoxical theories and approaches available in the literature to draw conclusions on the conditions favorable for achieving efficient lymphatic targeting of colloids. PMID:27366065

  1. A brief perspective on the diverging theories of lymphatic targeting with colloids.

    PubMed

    Siram, Karthik; Marslin, Gregory; Raghavan, Chellan Vijaya; Balakumar, Krishnamoorthy; Rahman, Habibur; Franklin, Gregory

    2016-01-01

    For targeted delivery of colloids to the lymphatic system, the colloids should efficiently reach and remain in the lymphatics for a considerable period of time. As per the current knowledge, diffusion and phagocytosis are the two mechanisms through which colloids reach the lymphatic system. Several parameters including particle size and charge have been shown to affect the direct uptake of colloids by the lymphatic system. Although many researchers attached ligands on the surface of colloids to promote phagocytosis-mediated lymphatic delivery, another school of thought suggests avoidance of phagocytosis by use of carriers like polyethylene glycol (PEG)ylated colloids to impart stealth attributes and evade phagocytosis. In this perspective, we weigh up the paradoxical theories and approaches available in the literature to draw conclusions on the conditions favorable for achieving efficient lymphatic targeting of colloids.

  2. Perspective-taking and depth of theory-of-mind reasoning in sequential-move games.

    PubMed

    Zhang, Jun; Hedden, Trey; Chia, Adrian

    2012-04-01

    Theory-of-mind (ToM) involves modeling an individual's mental states to plan one's action and to anticipate others' actions through recursive reasoning that may be myopic (with limited recursion) or predictive (with full recursion). ToM recursion was examined using a series of two-player, sequential-move matrix games with a maximum of three steps. Participants were assigned the role of Player I, controlling the initial and the last step, or of Player II, controlling the second step. Appropriate for the assigned role, participants either anticipated or planned Player II's strategy at the second step, and then determined Player I's optimal strategy at the first step. Participants more readily used predictive reasoning as Player II (i.e., planning one's own move) than as Player I (i.e., anticipating an opponent's move), although they did not differ when translating reasoning outcome about the second step to optimal action in the first step. Perspective-taking influenced likelihood of predictive reasoning, but it did not affect the rate at which participants acquired it during the experimental block. We conclude that the depth of ToM recursion (related to perspective-taking mechanisms) and rational application of belief-desire to action (instrumental rationality) constitute separate cognitive processes in ToM reasoning.

  3. COIN Goes "GLOCAL": Traditional COIN With a Global Perspective: Does the Current US Strategy Reflect COIN Theory, Doctrine and Principles

    DTIC Science & Technology

    2007-05-17

    COIN goes “ GLOCAL ”: Traditional COIN with a Global Perspective: Does the Current US Strategy Reflect COIN Theory, Doctrine and Principles? A...TITLE AND SUBTITLE COIN goes “ GLOCAL ”: Traditional COIN with a Global P ti D th C t US St t R fl t COIN 5a. CONTRACT NUMBER Perspective: Does...Monograph: COIN goes “ GLOCAL ”: Traditional COIN with a Global Perspective: Does the Current US Strategy Reflect COIN Theory, Doctrine and Principles

  4. New Perspectives on Spontaneous Brain Activity: Dynamic Networks and Energy Matter

    PubMed Central

    Tozzi, Arturo; Zare, Marzieh; Benasich, April A.

    2016-01-01

    Spontaneous brain activity has received increasing attention as demonstrated by the exponential rise in the number of published article on this topic over the last 30 years. Such “intrinsic” brain activity, generated in the absence of an explicit task, is frequently associated with resting-state or default-mode networks (DMN)s. The focus on characterizing spontaneous brain activity promises to shed new light on questions concerning the structural and functional architecture of the brain and how they are related to “mind”. However, many critical questions have yet to be addressed. In this review, we focus on a scarcely explored area, specifically the energetic requirements and constraints of spontaneous activity, taking into account both thermodynamical and informational perspectives. We argue that the “classical” definitions of spontaneous activity do not take into account an important feature, that is, the critical thermodynamic energetic differences between spontaneous and evoked brain activity. Spontaneous brain activity is associated with slower oscillations compared with evoked, task-related activity, hence it exhibits lower levels of enthalpy and “free-energy” (i.e., the energy that can be converted to do work), thus supporting noteworthy thermodynamic energetic differences between spontaneous and evoked brain activity. Increased spike frequency during evoked activity has a significant metabolic cost, consequently, brain functions traditionally associated with spontaneous activity, such as mind wandering, require less energy that other nervous activities. We also review recent empirical observations in neuroscience, in order to capture how spontaneous brain dynamics and mental function can be embedded in a non-linear dynamical framework, which considers nervous activity in terms of phase spaces, particle trajectories, random walks, attractors and/or paths at the edge of the chaos. This takes us from the thermodynamic free-energy, to the realm

  5. A Latent Class Growth Analysis of School Bullying and Its Social Context: The Self-Determination Theory Perspective

    ERIC Educational Resources Information Center

    Lam, Shui-fong; Law, Wilbert; Chan, Chi-Keung; Wong, Bernard P. H.; Zhang, Xiao

    2015-01-01

    The contribution of social context to school bullying was examined from the self-determination theory perspective in this longitudinal study of 536 adolescents from 3 secondary schools in Hong Kong. Latent class growth analysis of the student-reported data at 5 time points from grade 7 to grade 9 identified 4 groups of students: bullies (9.8%),…

  6. Does Physical Environment Contribute to Basic Psychological Needs? A Self-Determination Theory Perspective on Learning in the Chemistry Laboratory

    ERIC Educational Resources Information Center

    Sjöblom, Kirsi; Mälkki, Kaisu; Sandström, Niclas; Lonka, Kirsti

    2016-01-01

    The role of motivation and emotions in learning has been extensively studied in recent years; however, research on the role of the physical environment still remains scarce. This study examined the role of the physical environment in the learning process from the perspective of basic psychological needs. Although self-determination theory stresses…

  7. The Disillusionment of Students Denied Admission to a Preferred Major Viewed from the Perspective of a Psychological Theory of Alienation

    ERIC Educational Resources Information Center

    Barber, Clifton E.

    2014-01-01

    Why students respond differently when they are denied admission to a preferred academic major may be explained using a psychological theory of alienation. Using this theoretical perspective, three trajectories producing feelings of alienation are presented. The most intense of these trajectories, the process of disillusionment, is examined using a…

  8. Investigating Causality between Global Experience and Global Competency for Undergraduates in Contemporary China's Higher Education: A Transformative Learning Theory Perspective

    ERIC Educational Resources Information Center

    Li, Jian; Xu, Jinhui

    2016-01-01

    The purpose of this study is to investigate the causal relationship between global experience and global competency from a transformative learning theory perspective. China society is becoming more and more linguistically and culturally diverse in a global context. Moreover, Chinese students should be knowledgeable about the international issues…

  9. The Process of General Education Reform from a Faculty Perspective at a Research-Extensive University: A Grounded Theory Approach

    ERIC Educational Resources Information Center

    Hachtmann, Frauke

    2010-01-01

    The purpose of this study was to develop a theory for institutional change that explains the process and implementation of "Achievement-Centered Education" (ACE) from the faculty perspective. ACE is a new general education program at the University of Nebraska-Lincoln, a public, doctoral/research-extensive institution. A constant…

  10. Towards a Natural Systems Theory of Organizational Effectiveness: Integrating Geopolitical, Darwinistic and Strategic Planning Perspectives. ASHE Annual Meeting 1981 Paper.

    ERIC Educational Resources Information Center

    Cope, Robert

    A theory of organizational development is developed from turn-of-the-century geopolitical studies by combining the following: Smithian and Darwinian perspectives; the firmer concepts of management; and strategic planning views. An attempt is made to explore natural organizational processes by considering geopolitical, economic, biological, and…

  11. Understanding the Association between Future Time Perspective and Self-Regulated Learning through the Lens of Self-Determination Theory

    ERIC Educational Resources Information Center

    de Bilde, Jerissa; Vansteenkiste, Maarten; Lens, Willy

    2011-01-01

    The present cross-sectional research examined a process underlying the positive association between holding an extended future time perspective (FTP) and learning outcomes through the lens of self-determination theory. High school students and university students (N = 275) participated in the study. It was found that students with an extended FTP…

  12. Transforming Undergraduate Science Teaching: Social Constructivist Perspectives. Counterpoints: Studies in the Postmodern Theory of Education.

    ERIC Educational Resources Information Center

    Taylor, Peter C., Ed.; Gilmer, Penny J., Ed.; Tobin, Kenneth, Ed.

    This book comes at a time when epistemological reform is sweeping through the global community of science education. Since the 1970s, the theories of knowing embodied in the teaching activities of school science teachers have been undergoing a major transformation toward more learner-sensitive standpoints. Undergraduate science teaching however,…

  13. Changing Resistant Audience Attitudes Using Social Judgment Theory's "Anchor" Point Perspectives

    ERIC Educational Resources Information Center

    Ramos Salazar, Leslie

    2017-01-01

    Courses: Public Speaking, Business and Professional Communication, Persuasion, or any other skill-based oral communication course. Objectives: Students will practice the development and demonstration of persuasive arguments in this single-class social judgment theory activity to improve their ability to change resistant audience attitudes.

  14. [Swimming, physical activity and health: a historical perspective].

    PubMed

    Conti, A A

    2015-01-01

    Swimming, which is the coordinated and harmonic movement of the human body inside a liquid medium by means of the combined action of the superior and inferior limbs, is a physical activity which is diffused throughout the whole world and it is practiced by healthy and non-healthy subjects. Swimming is one of the physical activities with less contraindications and, with limited exceptions, can be suggested to individuals of both sexes and of every age range, including the most advanced. Swimming requires energy both for the floating process and for the anterograde progression, with a different and variable osteo-arthro-muscular involvement according to the different styles. The energetic requirement is about four times that for running, with an overall efficiency inferior to 10%; the energetic cost of swimming in the female subject is approximately two thirds of that in the male subject. The moderate aerobic training typical of swimming is useful for diabetic and hypertensive individuals, for people with painful conditions of rachis, as also for obese and orthopaedic patients. Motor activity inside the water reduces the risk of muscular-tendinous lesions and, without loading the joints in excess, requires the harmonic activation of the whole human musculature. Swimming is an activity requiring multiple abilities, ranging from a sense of equilibrium to that of rhythm, from reaction speed to velocity, from joint mobility to resistance. The structured interest for swimming in the perspective of human health from the beginning of civilization, as described in this contribution, underlines the relevance attributed to this activity in the course of human history.

  15. On the activation of σ-bonds by electric fields: A Valence Bond perspective

    NASA Astrophysics Data System (ADS)

    Rincón, Luis; Mora, Jose R.; Torres, F. Javier; Almeida, Rafael

    2016-09-01

    The activation of non-polar σ -bonds induced by an electric field is studied from the perspective of the Valence Bond theory. As representative examples we study the dissociation of the H-H and C-H bonds of molecular hydrogen and methane, respectively, under the experience of an homogeneous as well as an heterogeneous field oriented along the bond axis. For all cases, the increase in the electric field have similar effects: (i) the stabilization of the potential energy, (ii) an increment of the equilibrium bond length and (iii) the transition from an homolytic dissociation mechanism to an heterolytic one when the bond is subjected under a strong enough field. These general observations are thoroughly explained using a simple Valence Bond model that involve the increment of the resonance energy between the covalent and the ionic structures, and the curve crossing between the two structures after some field strength.

  16. Continuum Theory of Phase Separation Kinetics for Active Brownian Particles

    NASA Astrophysics Data System (ADS)

    Stenhammar, Joakim; Tiribocchi, Adriano; Allen, Rosalind J.; Marenduzzo, Davide; Cates, Michael E.

    2013-10-01

    Active Brownian particles (ABPs), when subject to purely repulsive interactions, are known to undergo activity-induced phase separation broadly resembling an equilibrium (attraction-induced) gas-liquid coexistence. Here we present an accurate continuum theory for the dynamics of phase-separating ABPs, derived by direct coarse graining, capturing leading-order density gradient terms alongside an effective bulk free energy. Such gradient terms do not obey detailed balance; yet we find coarsening dynamics closely resembling that of equilibrium phase separation. Our continuum theory is numerically compared to large-scale direct simulations of ABPs and accurately accounts for domain growth kinetics, domain topologies, and coexistence densities.

  17. The concept of sign in the work of Vygotsky, Winnicott and Bakhtin: further integration of object relations theory and activity theory.

    PubMed

    Leiman, M

    1992-09-01

    In a recent paper Ryle introduced the idea of integrating object relations theory and activity theory, a conceptual tradition originated by Vygotsky and developed by a number of Soviet psychologists during the previous decades. A specific aspect of this integrative perspective will be examined, implied in Ryle's paper but not elaborated by him. It is the issue of sign mediation which was Vygotsky's primary contribution to the methodological problems of modern psychology. The aim is to show that object relations theory, especially the work of Winnicott, may bring fresh understanding into Vygotsky's early notions. It is further claimed that, by introducing the contribution of Mikhail Bakhtin and his circle to the notion of sign mediation, the profundity in Winnicott's understanding of the transitional object and of the potential space may be more fully appreciated. At the same time the ideas of Winnicott and Bakhtin will jointly clarify the limitations in Vygotsky's sign conception.

  18. Neutral theory and the species abundance distribution: recent developments and prospects for unifying niche and neutral perspectives

    PubMed Central

    Matthews, Thomas J; Whittaker, Robert J

    2014-01-01

    Published in 2001, The Unified Neutral Theory of Biodiversity and Biogeography (UNTB) emphasizes the importance of stochastic processes in ecological community structure, and has challenged the traditional niche-based view of ecology. While neutral models have since been applied to a broad range of ecological and macroecological phenomena, the majority of research relating to neutral theory has focused exclusively on the species abundance distribution (SAD). Here, we synthesize the large body of work on neutral theory in the context of the species abundance distribution, with a particular focus on integrating ideas from neutral theory with traditional niche theory. First, we summarize the basic tenets of neutral theory; both in general and in the context of SADs. Second, we explore the issues associated with neutral theory and the SAD, such as complications with fitting and model comparison, the underlying assumptions of neutral models, and the difficultly of linking pattern to process. Third, we highlight the advances in understanding of SADs that have resulted from neutral theory and models. Finally, we focus consideration on recent developments aimed at unifying neutral- and niche-based approaches to ecology, with a particular emphasis on what this means for SAD theory, embracing, for instance, ideas of emergent neutrality and stochastic niche theory. We put forward the argument that the prospect of the unification of niche and neutral perspectives represents one of the most promising future avenues of neutral theory research. PMID:25360266

  19. Active perspective taking induces flexible use of self-knowledge during social inference.

    PubMed

    Todd, Andrew R; Simpson, Austin J; Tamir, Diana I

    2016-12-01

    Social life hinges on the ability to infer others' mental states. By default, people often recruit self-knowledge during social inference, particularly for others who are similar to oneself. How do people's active perspective-taking efforts-deliberately imagining another's perspective-affect self-knowledge use? In 2 experiments, we test the flexible self-application hypothesis: that the application of self-knowledge to a perspective-taking target differs based on that person's similarity to oneself. We found consistent evidence that, when making inferences about dissimilar others, perspective taking increased the projection of one's own traits and preferences to those targets, relative to a control condition. When making inferences about similar others, however, perspective taking decreased projection. These findings suggest that self-target similarity critically shapes the inferential processes triggered by active perspective-taking efforts. (PsycINFO Database Record

  20. Using Theory Elaboration and Activity Theory for Building a Knowledge Management Apparatus.

    ERIC Educational Resources Information Center

    Cortez, Edwin M.; Kazlauskas, Edward J.

    2000-01-01

    Reports ongoing developmental research at the Department of Agriculture to build a high-performance knowledge base for four agencies within the Department. Describes data gathering for the information system; planning to support knowledge management practices; theory elaboration through qualitative case analysis; and use of an activity theory…

  1. Active and Collaborative Learning in an Undergraduate Sociological Theory Course

    ERIC Educational Resources Information Center

    Pedersen, Daphne E.

    2010-01-01

    In this article, the author describes the use of active and collaborative learning strategies in an undergraduate sociological theory course. A semester-long ethnographic project is the foundation for the course; both individual and group participation contribute to the learning process. Assessment findings indicate that students are able, through…

  2. "Vygotsky's Neglected Legacy": Cultural-Historical Activity Theory

    ERIC Educational Resources Information Center

    Roth, Wolff-Michael; Lee, Yew-Jin

    2007-01-01

    The authors describe an evolving theoretical framework that has been called one of the best kept secrets of academia: cultural-historical activity theory, the result of proposals Lev Vygotsky first articulated but that his students and followers substantially developed to constitute much expanded forms in its second and third generations. Besides…

  3. Engestrom's Version of Activity Theory: A Conservative Praxis?

    ERIC Educational Resources Information Center

    Avis, James

    2007-01-01

    This article examines Engestrom's version of activity theory, one rooted in Marxism. It is argued that whilst this approach holds progressive possibilities, its radicalism is undermined by a restricted conceptualisation of transformation and the marginalisation of a politicised notion of social antagonism. As a consequence, this approach to…

  4. Anthropological Approach and Activity Theory: Culture, Communities and Institutions

    ERIC Educational Resources Information Center

    Lagrange, Jean-Baptiste

    2013-01-01

    The goal of this paper is to evaluate the contribution of the anthropological approach (AA) concurrently to Activity Theory (AT) in view of overarching questions about classroom use of technology for teaching and learning mathematics. I will do it first from a philosophical point of view, presenting the main notions of AA that have been used to…

  5. Instructional Transaction Theory: Knowledge Relationships among Processes, Entities, and Activities.

    ERIC Educational Resources Information Center

    Merrill, M. David; And Others

    1993-01-01

    Discussion of instructional transaction theory focuses on knowledge representation in an automated instructional design expert system. A knowledge structure called PEA-Net (processes, entities, and activities) is explained; the refrigeration process is used as an example; text resources and graphic resources are described; and simulations are…

  6. Videogames, Tools for Change: A Study Based on Activity Theory

    ERIC Educational Resources Information Center

    Méndez, Laura; Lacasa, Pilar

    2015-01-01

    Introduction: The purpose of this study is to provide a framework for analysis from which to interpret the transformations that take place, as perceived by the participants, when commercial video games are used in the classroom. We will show how Activity Theory (AT) is able to explain and interpret these changes. Method: Case studies are…

  7. Distributed Leadership through the Lens of Activity Theory

    ERIC Educational Resources Information Center

    Yuen, Jeanne Ho Pau; Victor Chen, Der-Thanq; Ng, David

    2016-01-01

    Purpose: Using Activity Theory as an interpretive lens to examine the distribution of leadership, this paper shares a case study on how leadership for an ICT project was distributed in a Singapore school. Method: The case study involved observations of 49 meetings and 34 interviews of leaders and the teachers who were involved in the ICT project.…

  8. Debates - Stochastic subsurface hydrology from theory to practice: A geologic perspective

    NASA Astrophysics Data System (ADS)

    Fogg, Graham E.; Zhang, Yong

    2016-12-01

    A geologic perspective on stochastic subsurface hydrology offers insights on representativeness of prominent field experiments and their general relevance to other hydrogeologic settings. Although the gains in understanding afforded by some 30 years of research in stochastic hydrogeology have been important and even essential, adoption of the technologies and insights by practitioners has been limited, due in part to a lack of geologic context in both the field and theoretical studies. In general, unintentional, biased sampling of hydraulic conductivity (K) using mainly hydrologic, well-based methods has resulted in the tacit assumption by many in the community that the subsurface is much less heterogeneous than in reality. Origins of the bias range from perspectives that are limited by scale and the separation of disciplines (geology, soils, aquifer hydrology, groundwater hydraulics, etc.). Consequences include a misfit between stochastic hydrogeology research results and the needs of, for example, practitioners who are dealing with local plume site cleanup that is often severely hampered by very low velocities in the very aquitard facies that are commonly overlooked or missing from low-variance stochastic models or theories. We suggest that answers to many of the problems exposed by stochastic hydrogeology research can be found through greater geologic integration into the analyses, including the recognition of not only the nearly ubiquitously high variances of K but also the strong tendency for the good connectivity of the high-K facies when spatially persistent geologic unconformities are absent. We further suggest that although such integration may appear to make the contaminant transport problem more complex, expensive and intractable, it may in fact lead to greater simplification and more reliable, less expensive site characterizations and models.

  9. Phishing for suitable targets in the Netherlands: routine activity theory and phishing victimization.

    PubMed

    Leukfeldt, E Rutger

    2014-08-01

    This article investigates phishing victims, especially the increased or decreased risk of victimization, using data from a cybercrime victim survey in the Netherlands (n=10,316). Routine activity theory provides the theoretical perspective. According to routine activity theory, several factors influence the risk of victimization. A multivariate analysis was conducted to assess which factors actually lead to increased risk of victimization. The model included background and financial data of victims, their Internet activities, and the degree to which they were "digitally accessible" to an offender. The analysis showed that personal background and financial characteristics play no role in phishing victimization. Among eight Internet activities, only "targeted browsing" led to increased risk. As for accessibility, using popular operating systems and web browsers does not lead to greater risk, while having up-to-date antivirus software as a technically capable guardian has no effect. The analysis showed no one, clearly defined group has an increased chance of becoming a victim. Target hardening may help, but opportunities for prevention campaigns aimed at a specific target group or dangerous online activities are limited. Therefore, situational crime prevention will have to come from a different angle. Banks could play the role of capable guardian.

  10. Impulse and constraint: perspectives from personality psychology, convergence with theory in other areas, and potential for integration.

    PubMed

    Carver, Charles S

    2005-01-01

    A behavioral dimension of impulse versus constraint has long been observed by personality psychologists. This article begins by reviewing processes underlying this dimension from the perspectives of several personality theories. Some cases of constraint reflect inhibition due to anxiety, but some theories suggest other roots for constraint. Theories from developmental psychology accommodate both possibilities by positing 2 sorts of control over action. These modes of influence strongly resemble those predicated in some personality theories and also 2 modes of function that are asserted by some cognitive and social psychological theories. Several further literatures are considered, to which 2-mode models seem to contribute meaningfully. The article closes by addressing questions raised by these ideas, including whether the issue of impulse versus constraint applies to avoidance as well as to approach.

  11. Health Activism Targeting Corporations: A Critical Health Communication Perspective.

    PubMed

    Zoller, Heather M

    2017-02-01

    Health activists and health social movements have transformed medical treatment, promoted public health policies, and extended civil rights for people with illness and disability. This essay explores health activism that targets corporate-generated illness and risk in order to understand the unique communicative challenges involved in this area of contention. Arguing for greater critical engagement with policy, the article integrates policy research with social movements, subpolitics, and issue management literature. Drawing from activist discourse and multidisciplinary research, the article describes how a wide array of groups groups build visibility for corporate health effects, create the potential for networking and collaboration, and politicize health by attributing illness to corporate behaviors. The discussion articulates the implications of this activism for health communication theory, research, and practice.

  12. Towards a quantitative kinetic theory of polar active matter

    NASA Astrophysics Data System (ADS)

    Ihle, T.

    2014-06-01

    A recent kinetic approach for Vicsek-like models of active particles is reviewed. The theory is based on an exact Chapman- Kolmogorov equation in phase space. It can handle discrete time dynamics and "exotic" multi-particle interactions. A nonlocal mean-field theory for the one-particle distribution function is obtained by assuming molecular chaos. The Boltzmann approach of Bertin, et al., Phys. Rev. E 74, 022101 (2006) and J. Phys. A 42, 445001 (2009), is critically assessed and compared to the current approach. In Boltzmann theory, a collision starts when two particles enter each others action spheres and is finished when their distance exceeds the interaction radius. The average duration of such a collision, τ0, is measured for the Vicsek model with continuous time-evolution. If the noise is chosen to be close to the flocking threshold, the average time between collisions is found to be roughly equal to τ0 at low densities. Thus, the continuous-time Vicsek-model near the flocking threshold cannot be accurately described by a Boltzmann equation, even at very small density because collisions take so long that typically other particles join in, rendering Boltzmann's binary collision assumption invalid. Hydrodynamic equations for the phase space approach are derived by means of a Chapman-Enskog expansion. The equations are compared to the Toner-Tu theory of polar active matter. New terms, absent in the Toner-Tu theory, are highlighted. Convergence problems of Chapman-Enskog and similar gradient expansions are discussed.

  13. Major Social Theories of Aging and Their Implications for Counseling Concepts and Practice: A Critical Review.

    ERIC Educational Resources Information Center

    Fry, P. S.

    1992-01-01

    Discusses counseling implications and applications of several social theories of aging. Explores effects of some rather distinct perspectives on aging, beginning with conceptualizations, research studies, and criticisms of disengagement theory, activity theory, and role theory, leading up to continuity theory and liberation perspective. Focuses on…

  14. Replacement of the Project Manager Reflected Through Activity Theory and Work-System Theory

    NASA Astrophysics Data System (ADS)

    Vartiainen, Tero; Aramo-Immonen, Heli; Jussila, Jari; Pirhonen, Maritta; Liikamaa, Kirsi

    Replacement of the project manager (RPM) is a known phenomenon in information systems (IS) projects, but scant attention is given to it in the project management or IS literature. Given its critical effects on the project business, the organization, the project team, and the project manager, it should be studied in more depth. We identified factors which make RPM occurrences inherently different and we show that work-system theory and activity theory give comprehensive lenses to advance research on RPM. For the future research on RPM we identified three objectives: experiences on RPM, process model for RPM, and organizational culture's influence on RPM occurrences.

  15. Modeling of active transmembrane transport in a mixture theory framework.

    PubMed

    Ateshian, Gerard A; Morrison, Barclay; Hung, Clark T

    2010-05-01

    This study formulates governing equations for active transport across semi-permeable membranes within the framework of the theory of mixtures. In mixture theory, which models the interactions of any number of fluid and solid constituents, a supply term appears in the conservation of linear momentum to describe momentum exchanges among the constituents. In past applications, this momentum supply was used to model frictional interactions only, thereby describing passive transport processes. In this study, it is shown that active transport processes, which impart momentum to solutes or solvent, may also be incorporated in this term. By projecting the equation of conservation of linear momentum along the normal to the membrane, a jump condition is formulated for the mechano-electrochemical potential of fluid constituents which is generally applicable to nonequilibrium processes involving active transport. The resulting relations are simple and easy to use, and address an important need in the membrane transport literature.

  16. Infusing a Global Perspective into the Study of Agriculture: Student Activities Volume II.

    ERIC Educational Resources Information Center

    Martin, Robert A., Ed.

    These student activities are designed to be used in a variety of places in the curriculum to provide a global perspective for students as they study agriculture. This document is not a unit of instruction; rather, teachers are encouraged to study the materials and decide which will be helpful in adding a global perspective to the learning…

  17. A Life-Course Perspective on Physical Activity Promotion: Applications and Implications

    ERIC Educational Resources Information Center

    Li, Kin-Kit; Cardinal, Bradley J.; Settersten, Richard A., Jr.

    2009-01-01

    This article illustrates how a life-course perspective can be infused more fully into the research field of physical activity promotion. A life-course perspective is particularly promising in connecting, organizing, and supplementing current knowledge and can potentially stimulate and direct future research and intervention efforts by using a…

  18. Psychosocial Factors and Theory in Physical Activity Studies in Minorities

    PubMed Central

    Mama, Scherezade K.; McNeill, Lorna H.; McCurdy, Sheryl A.; Evans, Alexandra E.; Diamond, Pamela M.; Adamus-Leach, Heather J.; Lee, Rebecca E.

    2015-01-01

    Objectives To summarize the effectiveness of interventions targeting psychosocial factors to increase physical activity (PA) among ethnic minority adults and explore theory use in PA interventions. Methods Studies (N = 11) were identified through a systematic review and targeted African American/Hispanic adults, specific psychosocial factors, and PA. Data were extracted using a standard code sheet and the Theory Coding Scheme. Results Social support was the most common psychosocial factor reported, followed by motivational readiness, and self-efficacy, as being associated with increased PA. Only 7 studies explicitly reported using a theoretical framework. Conclusions Future efforts should explore theory use in PA interventions and how integration of theoretical constructs, including psychosocial factors, increases PA. PMID:25290599

  19. Understanding Schizophrenia as a Disorder of Consciousness: Biological Correlates and Translational Implications from Quantum Theory Perspectives

    PubMed Central

    Venkatasubramanian, Ganesan

    2015-01-01

    From neurophenomenological perspectives, schizophrenia has been conceptualized as “a disorder with heterogeneous manifestations that can be integrally understood to involve fundamental perturbations in consciousness”. While these theoretical constructs based on consciousness facilitate understanding the ‘gestalt’ of schizophrenia, systematic research to unravel translational implications of these models is warranted. To address this, one needs to begin with exploration of plausible biological underpinnings of “perturbed consciousness” in schizophrenia. In this context, an attractive proposition to understand the biology of consciousness is “the orchestrated object reduction (Orch-OR) theory” which invokes quantum processes in the microtubules of neurons. The Orch-OR model is particularly important for understanding schizophrenia especially due to the shared ‘scaffold’ of microtubules. The initial sections of this review focus on the compelling evidence to support the view that “schizophrenia is a disorder of consciousness” through critical summary of the studies that have demonstrated self-abnormalities, aberrant time perception as well as dysfunctional intentional binding in this disorder. Subsequently, these findings are linked with ‘Orch-OR theory’ through the research evidence for aberrant neural oscillations as well as microtubule abnormalities observed in schizophrenia. Further sections emphasize the applicability and translational implications of Orch-OR theory in the context of schizophrenia and elucidate the relevance of quantum biology to understand the origins of this puzzling disorder as “fundamental disturbances in consciousness”. PMID:25912536

  20. Motivational dynamics of eating regulation: a self-determination theory perspective

    PubMed Central

    2012-01-01

    Within Western society, many people have difficulties adequately regulating their eating behaviors and weight. Although the literature on eating regulation is vast, little attention has been given to motivational dynamics involved in eating regulation. Grounded in Self-Determination Theory (SDT), the present contribution aims to provide a motivational perspective on eating regulation. The role of satisfaction and thwarting of the basic psychological needs for autonomy, competence, and relatedness is introduced as a mechanism to (a) explain the etiology of body image concerns and disordered eating and (b) understand the optimal regulation of ongoing eating behavior for healthy weight maintenance. An overview of empirical studies on these two research lines is provided. In a final section, the potential relevance and value of SDT in relation to prevailing theoretical models in the domain of eating regulation is discussed. Although research on SDT in the domain of eating regulation is still in its early stages and more research is clearly needed, this review suggests that the SDT represents a promising framework to more thoroughly study and understand the motivational processes involved in eating regulation and associated problems. PMID:22385782

  1. Eight myths on motivating social services workers: theory-based perspectives.

    PubMed

    Latting, J K

    1991-01-01

    A combination of factors has made formal motivational and reward systems rare in human service organizations generally and virtually non-existent in social service agencies. The author reviews eight of these myths by reference to eight motivational theories which refute them: need theory, expectancy theory, feedback theory, equity theory, reinforcement theory, cognitive evaluation theory, goal setting theory, and social influence theory. Although most of these theories have been developed and applied in the private sector, relevant research has also been conducted in social service agencies. The author concludes with a summary of guidelines suggested by the eight theories for motivating human service workers.

  2. Human Activity Modeling: Toward A Pragmatic Integration of Activity Theory and Usage-Centered Design

    NASA Astrophysics Data System (ADS)

    Constantine, Larry L.

    Human activity modeling is a systematic approach to organizing and representing the contextual aspects of tool use that is both well-grounded in an accepted theoretical framework and embedded within a proven design method. Activity theory provides the vocabulary and conceptual framework for understanding the human use of tools and other artifacts. Usage-centered design provides the methodological scaffolding for applying activity theory in practice. In this chapter, activity theory and usage-centered design are outlined and the connections between the two are highlighted. Simple extensions to the models of usage-centered design are introduced that together succinctly model the salient and most essential features of the activities within which tool use is embedded. Although not intended as a tutorial, examples of Activity Maps, Activity Profiles, and Participation Maps are provided.

  3. Achieving compliance with environmental health-related land use planning conditions in Hong Kong: perspectives from traditional motivation theories.

    PubMed

    Man, Rita Li Yi

    2009-11-01

    Environmental health-related land use planning conditions can enhance the environment in Hong Kong. Previous research by others has shown, however, that a lack of compliance with planning conditions often occurs. And as no direct enforcement of planning conditions exists in Hong Kong, it is of interest to understand possible ways in which to increase the motivation of land developers and property owners to comply with planning conditions. The author looked at motivation from the perspective of three traditional motivation theories: Theory X, Theory Y, and incentive theory. While the majority of this article focuses on the enforcement and the legal tests in land use planning conditions, it also presents the results of the first study of the motivations behind Hong Kong land developers to comply with land use planning conditions.

  4. Scrutinizing impacts of conspiracy theories on readers' political views: a rational choice perspective on anti-semitic rhetoric in Turkey.

    PubMed

    Nefes, Turkay Salim

    2015-09-01

    Although conspiracy theories have been politically significant throughout history, only a few empirical studies have been about their influence on readers' views. Combining a rational choice approach with a content analysis of an anti-Semitic best-selling conspiracy theory book series in Turkey - the Efendi series - and semi-structured interviews with its readers, this paper reveals the effects of the conspiracy theories on readers' political perspectives. The findings suggest that whereas the rightists are reactive to the Jewish origins of the Dönmes, the leftists oppose the Dönmes as dominant bourgeois figures. This paper concludes that left- and right-wing adherents use the conspiratorial accounts in line with their political views and ontological insecurities. It expands the existing academic literature, which conceptualizes conspiracy theories either as paranoid delusions or as neutral, rational narratives, by showing that they can be both.

  5. Pedagogical Distance: Explaining Misalignment in Student-Driven Online Learning Activities Using Activity Theory

    ERIC Educational Resources Information Center

    Westberry, Nicola; Franken, Margaret

    2015-01-01

    This paper provides an Activity Theory analysis of two online student-driven interactive learning activities to interrogate assumptions that such groups can effectively learn in the absence of the teacher. Such an analysis conceptualises learning tasks as constructed objects that drive pedagogical activity. The analysis shows a disconnect between…

  6. Anti-smoking environment: a perspective from Murray's psychogenic needs theory.

    PubMed

    Randheer, Kokku; Almotairi, Mohammad; Naeem, Haseebullah Abdul

    2013-10-27

    Smoking emerged as a social problem in many nations. Smoking is inflicting injuries to society including addiction, diseases, health damage, and loss of productivity. Individuals, institutions and governments are working to contain the menace of smoking. Many policies, programs and activities are being designed and implemented. To extend a helping hand to fight against smoking this study brought to light the amalgamation of Murray's psychogenic needs theory with anti-smoking activities to create an effective anti-smoking environment.  Conceptual methodology is adopted and five propositions were drafted. This study conclude that anti-smoking activities general education, campaigning, counseling, social welfare, and medical camps when moderated by Murray's psychogenic needs power, affiliation and achievement can create an effective anti-smoking environment further leading to quitting or reduction in the smoking.

  7. Activity Theories and the Ontology of Psychology: Learning from Danish and Russian Experiences.

    PubMed

    Mammen, Jens; Mironenko, Irina

    2015-12-01

    Psychology has permanent problems of theoretical coherence and practical, analytic and critical efficiency. It is claimed that Activity Theory (AT) with roots in a long European philosophical tradition and continued in Russian AT is a first step to remedy this. A Danish version of AT may have a key to exceed some, mostly implicit, ontological restrictions in traditional AT and free it from an embracement of functionalism and mechanicism, rooted in Renaissance Physics. The analysis goes back to Aristotle's understanding of the freely moving animal in its ecology and introduces some dualities in the encounter between subject and object which replace the dualistic dichotomies traditionally splitting Psychology in Naturwissenschaft vs. Geisteswissenshaft. This also implies a "Copernican turn" of Cartesian dualism. The perspectives are to give place for a phenomenology of meaning without cutting human psyche out of Nature and to open Psychology to its domain.

  8. The Ethics of Writing Instruction: Issues in Theory and Practice. Perspectives on Writing: Theory, Research, Practice. Volume 4.

    ERIC Educational Resources Information Center

    Pemberton, Michael A., Ed.

    This collection of essays reveals a keen awareness of the degree to which ethics and ethical systems are located in particular instructional contexts. The essays consider the implications of these contexts from a variety of perspectives, both theoretical and pedagogical. In the collection's first part, Ethics and the Composition Classroom, are the…

  9. Gender perspective on the factors predicting recycling behavior: Implications from the theory of planned behavior.

    PubMed

    Oztekin, Ceren; Teksöz, Gaye; Pamuk, Savas; Sahin, Elvan; Kilic, Dilek Sultan

    2017-02-17

    This study aimed to assess the role of some socio-psychological attributes in explaining recycling behavior of Turkish university community from a gender perspective within the context of the theory of planned behavior with an additional variable (past experience). The recycling behavior of whole sample, females and males, has been examined in 3 sessions -depending on the arguments that explain gendered pattern of private and public environmental behavior and sticking to the fact why females' stronger environmental values, beliefs, and attitudes do not translate consistently into greater engagement in public behavior. As a result of model runs, different variables shaping intention for behavior have been found, namely perceived behavior control for females and past behavior for males. Due to the low percent of the variance in explaining recycling behavior of females, they have been identified as the ones who do not carry out intentions (non-recyclers). Since intentions alone are capable of identifying recyclers accurately but not non-recyclers, there may be other factors to be considered to understand the reason for females not carrying out the intentions. The results of descriptive statistics supported the identification by attitudes toward recycling. Female attitudes were innate (recycling is good, necessary, useful and sensitive), whereas those of males were learnt (recycling is healthy, valuable and correct). Thus, it has been concluded that males' intention for recycling is shaped by their past behavior and the conclusion is supported by males having learnt attitude toward recycling whereas females' lack of intention for recycling is shaped by their perceived behavior control and is supported by their innate attitude for recycling. All in all, the results of the present study provide further support for the utility of the TPB as a model of behavioral prediction and concur with other studies examining the utility of the TPB in the context of recycling.

  10. Perspectives

    ERIC Educational Resources Information Center

    Tarone, Elaine

    2013-01-01

    The topic of this "Perspectives" column is "Requiring a Proficiency Level as a Requirement for U.S. K-12 Teacher Licensure." In 1998, the American Council of Teachers of Foreign Languages (ACTFL) began to work with the National Council for Accreditation of Teacher Education (NCATE), which accredits teacher education programs…

  11. Reconstruing Codependency Using Self-in-Relation Theory: A Feminist Perspective.

    ERIC Educational Resources Information Center

    Collins, Barbara G.

    1993-01-01

    Traces evolution of codependency construct. Examines codependency from perspective of researchers who have found little empirical support for constellation of characteristics used to define term and from perspective of feminist analysis. Analyzes assumptions about health and relationships embedded in concept of codependency and contends that…

  12. Testing Theory of Planned Behavior and Neo-Socioanalytic Theory models of trait activity, industriousness, exercise social cognitions, exercise intentions, and physical activity in a representative U.S. sample.

    PubMed

    Vo, Phuong T; Bogg, Tim

    2015-01-01

    Prior research identified assorted relations between trait and social cognition models of personality and engagement in physical activity. Using a representative U.S. sample (N = 957), the goal of the present study was to test two alternative structural models of the relationships among the extraversion-related facet of activity, the conscientiousness-related facet of industriousness, social cognitions from the Theory of Planned Behavior (perceived behavioral control, affective attitudes, subjective norms, intentions), Social Cognitive Theory (self-efficacy, outcome expectancies), and the Transtheoretical Model (behavioral processes of change), and engagement in physical activity. Path analyses with bootstrapping procedures were used to model direct and indirect effects of trait and social cognition constructs on physical activity through two distinct frameworks - the Theory of Planned Behavior and Neo-Socioanalytic Theory. While both models showed good internal fit, comparative model information criteria showed the Theory-of-Planned-Behavior-informed model provided a better fit. In the model, social cognitions fully mediated the relationships from the activity facet and industriousness to intentions for and engagement in physical activity, such that the relationships were primarily maintained by positive affective evaluations, positive expected outcomes, and confidence in overcoming barriers related to physical activity engagement. The resultant model - termed the Disposition-Belief-Motivation model- is proposed as a useful framework for organizing and integrating personality trait facets and social cognitions from various theoretical perspectives to investigate the expression of health-related behaviors, such as physical activity. Moreover, the results are discussed in terms of extending the application of the Disposition-Belief-Motivation model to longitudinal and intervention designs for physical activity engagement.

  13. Testing Theory of Planned Behavior and Neo-Socioanalytic Theory models of trait activity, industriousness, exercise social cognitions, exercise intentions, and physical activity in a representative U.S. sample

    PubMed Central

    Vo, Phuong T.; Bogg, Tim

    2015-01-01

    Prior research identified assorted relations between trait and social cognition models of personality and engagement in physical activity. Using a representative U.S. sample (N = 957), the goal of the present study was to test two alternative structural models of the relationships among the extraversion-related facet of activity, the conscientiousness-related facet of industriousness, social cognitions from the Theory of Planned Behavior (perceived behavioral control, affective attitudes, subjective norms, intentions), Social Cognitive Theory (self-efficacy, outcome expectancies), and the Transtheoretical Model (behavioral processes of change), and engagement in physical activity. Path analyses with bootstrapping procedures were used to model direct and indirect effects of trait and social cognition constructs on physical activity through two distinct frameworks – the Theory of Planned Behavior and Neo-Socioanalytic Theory. While both models showed good internal fit, comparative model information criteria showed the Theory-of-Planned-Behavior-informed model provided a better fit. In the model, social cognitions fully mediated the relationships from the activity facet and industriousness to intentions for and engagement in physical activity, such that the relationships were primarily maintained by positive affective evaluations, positive expected outcomes, and confidence in overcoming barriers related to physical activity engagement. The resultant model – termed the Disposition-Belief-Motivation model– is proposed as a useful framework for organizing and integrating personality trait facets and social cognitions from various theoretical perspectives to investigate the expression of health-related behaviors, such as physical activity. Moreover, the results are discussed in terms of extending the application of the Disposition-Belief-Motivation model to longitudinal and intervention designs for physical activity engagement. PMID:26300811

  14. Nonlinear dynamics and neo-piagetian theories in problem solving: perspectives on a new epistemology and theory development.

    PubMed

    Stamovlasis, Dimitrios

    2011-04-01

    In this study, an attempt is made to integrate Nonlinear Dynamical Systems theory and neo-Piagetian theories applied to creative mental processes, such as problem solving. A catastrophe theory model is proposed, which implements three neo-Piagetian constructs as controls: the functional M-capacity as asymmetry and logical thinking and the degree of field dependence independence as bifurcation. Data from achievement scores of students in tenth grade physics were analyzed using dynamic difference equations and statistical regression techniques. The cusp catastrophe model proved superior comparing to the pre-post linear counterpart and demonstrated nonlinearity at the behavioral level. The nonlinear phenomenology, such as hysteresis effects and bifurcation, is explained by an analysis, which provides a causal interpretation via the mathematical theory of self-organization and thus building bridges between NDS-theory concepts and neo-Piagetian theories. The contribution to theory building is made, by also addressing the emerging philosophical, - ontological and epistemological- questions about the processes of problem solving and creativity.

  15. Cultural-Historical Activity Theory and Domain Analysis: Metatheoretical Implications for Information Science

    ERIC Educational Resources Information Center

    Wang, Lin

    2013-01-01

    Background: Cultural-historical activity theory is an important theory in modern psychology. In recent years, it has drawn more attention from related disciplines including information science. Argument: This paper argues that activity theory and domain analysis which uses the theory as one of its bases could bring about some important…

  16. Analyzing Activities in the Course of Science Education, According to Activity Theory: The Case of Sound

    ERIC Educational Resources Information Center

    Theodoraki, Xarikleia; Plakitsi, Katerina

    2013-01-01

    In the present study, we analyze activities on the topic of sound, which are performed in the science education laboratory lessons in the third-year students of the Department of Early Childhood Education at the University of Ioannina. The analysis of the activities is based on one of the most modern learning theories of CHAT (Cultural Historical…

  17. Analyzing Number Composition and Decomposition Activities in Kindergarten from a Numeracy Perspective

    ERIC Educational Resources Information Center

    Tsamir, Pessia; Tirosh, Dina; Levenson, Esther; Tabach, Michal; Barkai, Ruthi

    2015-01-01

    This study explores two number composition and decomposition activities from a numeracy perspective. Both activities have the same mathematical structure but each employs different tools and contexts. Twenty kindergarten children engaged individually with these activities. Verbal utterances as well as actions of the child and interviewer were…

  18. Perspectives on the dental school learning environment: theory X, theory Y, and situational leadership applied to dental education.

    PubMed

    Connor, Joseph P; Troendle, Karen

    2007-08-01

    This article applies two well-known management and leadership models-Theory X and Theory Y, and Situational Leadership-to dental education. Theory X and Theory Y explain how assumptions may shape the behaviors of dental educators and lead to the development of "cop" and "coach" teaching styles. The Situational Leadership Model helps the educator to identify the teaching behaviors that are appropriate in a given situation to assist students as they move from beginner to advanced status. Together, these models provide a conceptual reference to assist in the understanding of the behaviors of both students and faculty and remind us to apply discretion in the education of our students. The implications of these models for assessing and enhancing the educational environment in dental school are discussed.

  19. Theory-Driven Intervention for Changing Personality: Expectancy Value Theory, Behavioral Activation, and Conscientiousness

    PubMed Central

    Magidson, Jessica F.; Roberts, Brent; Collado-Rodriguez, Anahi; Lejuez, C.W.

    2013-01-01

    Considerable evidence suggests that personality traits may be changeable, raising the possibility that personality traits most linked to health problems can be modified with intervention. A growing body of research suggests that problematic personality traits may be altered with behavioral intervention using a bottom-approach. That is, by targeting core behaviors that underlie personality traits with the goal of engendering new, healthier patterns of behavior that over time become automatized and manifest in changes in personality traits. Nevertheless, a bottom-up model for changing personality traits is somewhat diffuse and requires clearer integration of theory and relevant interventions to enable real clinical application. As such, this manuscript proposes a set of guiding principles for theory-driven modification of targeted personality traits using a bottom-up approach, focusing specifically on targeting the trait of conscientiousness using a relevant behavioral intervention, Behavioral Activation (BA), considered within the motivational framework of Expectancy Value Theory (EVT). We conclude with a real case example of the application of BA to alter behaviors counter to conscientiousness in a substance dependent patient, highlighting the EVT principles most relevant to the approach and the importance and viability of a theoretically-driven, bottom-up approach to changing personality traits. PMID:23106844

  20. Theory-driven intervention for changing personality: expectancy value theory, behavioral activation, and conscientiousness.

    PubMed

    Magidson, Jessica F; Roberts, Brent W; Collado-Rodriguez, Anahi; Lejuez, C W

    2014-05-01

    Considerable evidence suggests that personality traits may be changeable, raising the possibility that personality traits most linked to health problems can be modified with intervention. A growing body of research suggests that problematic personality traits may be altered with behavioral intervention using a bottom-up approach. That is, by targeting core behaviors that underlie personality traits with the goal of engendering new, healthier patterns of behavior that, over time, become automatized and manifest in changes in personality traits. Nevertheless, a bottom-up model for changing personality traits is somewhat diffuse and requires clearer integration of theory and relevant interventions to enable real clinical application. As such, this article proposes a set of guiding principles for theory-driven modification of targeted personality traits using a bottom-up approach, focusing specifically on targeting the trait of conscientiousness using a relevant behavioral intervention, Behavioral Activation (BA), considered within the motivational framework of expectancy value theory (EVT). We conclude with a real case example of the application of BA to alter behaviors counter to conscientiousness in a substance-dependent patient, highlighting the EVT principles most relevant to the approach and the importance and viability of a theoretically driven, bottom-up approach to changing personality traits.

  1. Transition path theory analysis of c-Src kinase activation

    PubMed Central

    Meng, Yilin; Shukla, Diwakar; Pande, Vijay S.; Roux, Benoît

    2016-01-01

    Nonreceptor tyrosine kinases of the Src family are large multidomain allosteric proteins that are crucial to cellular signaling pathways. In a previous study, we generated a Markov state model (MSM) to simulate the activation of c-Src catalytic domain, used as a prototypical tyrosine kinase. The long-time kinetics of transition predicted by the MSM was in agreement with experimental observations. In the present study, we apply the framework of transition path theory (TPT) to the previously constructed MSM to characterize the main features of the activation pathway. The analysis indicates that the activating transition, in which the activation loop first opens up followed by an inward rotation of the αC-helix, takes place via a dense set of intermediate microstates distributed within a fairly broad “transition tube” in a multidimensional conformational subspace connecting the two end-point conformations. Multiple microstates with negligible equilibrium probabilities carry a large transition flux associated with the activating transition, which explains why extensive conformational sampling is necessary to accurately determine the kinetics of activation. Our results suggest that the combination of MSM with TPT provides an effective framework to represent conformational transitions in complex biomolecular systems. PMID:27482115

  2. Theory of Activated Relaxation in Nanoscale Confined Liquids

    NASA Astrophysics Data System (ADS)

    Mirigian, Stephen; Schweizer, Kenneth

    2014-03-01

    We extend the recently developed Elastically Cooperative Nonlinear Langevin Equation(ECNLE) theory of activated relaxation in supercooled liquids to treat the case of geometrically confined liquids. Generically, confinement of supercooled liquids leads to a speeding up of the dynamics(with a consequent depression of the glass transition temperature) extending on the order of tens of molecular diameters away from a free surface. At present, this behavior is not theoretically well understood. Our theory interprets the speed up in dynamics in terms of two coupled effects. First, a direct surface effect, extending two to three molecular diameters from a free surface, and related to a local rearrangement of molecules with a single cage. The second is a longer ranged ``confinement'' effect, extending tens of molecular diameters from a free surface and related to the long range elastic penalty necessary for a local rearrangement. The theory allows for the calculation of relaxation time and Tg profiles within a given geometry and first principles calculations of relevant length scales. Comparison to both dynamic and pseudo-thermodynamic measurements shows reasonable agreement to experiment with no adjustable parameters.

  3. On the tuning of electrical and thermal transport in thermoelectrics: an integrated theory-experiment perspective

    NASA Astrophysics Data System (ADS)

    Yang, Jiong; Xi, Lili; Qiu, Wujie; Wu, Lihua; Shi, Xun; Chen, Lidong; Yang, Jihui; Zhang, Wenqing; Uher, Ctirad; Singh, David J.

    2016-02-01

    During the last two decades, we have witnessed great progress in research on thermoelectrics. There are two primary focuses. One is the fundamental understanding of electrical and thermal transport, enabled by the interplay of theory and experiment; the other is the substantial enhancement of the performance of various thermoelectric materials, through synergistic optimisation of those intercorrelated transport parameters. Here we review some of the successful strategies for tuning electrical and thermal transport. For electrical transport, we start from the classical but still very active strategy of tuning band degeneracy (or band convergence), then discuss the engineering of carrier scattering, and finally address the concept of conduction channels and conductive networks that emerge in complex thermoelectric materials. For thermal transport, we summarise the approaches for studying thermal transport based on phonon-phonon interactions valid for conventional solids, as well as some quantitative efforts for nanostructures. We also discuss the thermal transport in complex materials with chemical-bond hierarchy, in which a portion of the atoms (or subunits) are weakly bonded to the rest of the structure, leading to an intrinsic manifestation of part-crystalline part-liquid state at elevated temperatures. In this review, we provide a summary of achievements made in recent studies of thermoelectric transport properties, and demonstrate how they have led to improvements in thermoelectric performance by the integration of modern theory and experiment, and point out some challenges and possible directions.

  4. Invited commentary: integrating a life-course perspective and social theory to advance research on residential segregation and health.

    PubMed

    Osypuk, Theresa L

    2013-02-15

    Research on racial residential segregation and health typically uses multilevel, population-based, slice-in-time data. Although research using this approach, including that by Kershaw et al. (Am J Epidemiol. 2013;177(4):299-309), has been valuable, I argue that to advance our understanding of how residential segregation influences health and health disparities, it is critical to incorporate a life-course perspective and integrate social theory. Applying a life-course perspective would entail modeling transitions, cumulative risk, and developmental and dynamic processes and mechanisms, as well as recognizing the contingency of contextual effects on different social groups. I discuss the need for analytic methods appropriate for modeling health effects of distal causes experienced across the life course, such as segregation, that operate through multiple levels and sequences of mediators, potentially across decades. Sociological theories of neighborhood attainment (e.g., segmented assimilation, ethnic resurgence, and place stratification theories) can guide effect-modification tests to help illuminate health effects resulting from intersections of residential processes, race/ethnicity, immigration, and other social determinants of health. For example, nativity and immigration history may crucially shape residential processes and exposures, but these have received limited attention in prior segregation-health literature.

  5. Gender, health and theory: conceptualizing the issue, in local and world perspective.

    PubMed

    Connell, Raewyn

    2012-06-01

    Public policy documents on gender and health mostly rely on categorical understandings of gender that are now inadequate. Poststructuralist thought is an advance, but relational theories of gender, treating gender as a multidimensional structure operating in a complex network of institutions, provide the most promising approach to gendered embodiment and its connection with health issues. Examples are discussed in this article. A crucial problem is how to move the analysis beyond local arenas, especially to understand gender on a world scale. A relational approach to this question is proposed, seeing gendered embodiment as interwoven with the violent history of colonialism, the structural violence of contemporary globalization, and the making of gendered institutions on a world scale, including the corporations, professions and state agencies of the health sector. Gender is seen as the active social process that brings reproductive bodies into history, generating health consequences not as a side-effect but in the making of gender itself.

  6. Motivational processes and well-being in cardiac rehabilitation: a self-determination theory perspective.

    PubMed

    Rahman, Rachel Jane; Hudson, Joanne; Thøgersen-Ntoumani, Cecilie; Doust, Jonathan H

    2015-01-01

    This research examined the processes underpinning changes in psychological well-being and behavioural regulation in cardiac rehabilitation (CR) patients using self-determination theory (SDT). A repeated measures design was used to identify the longitudinal relationships between SDT variables, psychological well-being and exercise behaviour during and following a structured CR programme. Participants were 389 cardiac patients (aged 36-84 years; M(age) = 64 ± 9 years; 34.3% female) referred to a 12-week-supervised CR programme. Psychological need satisfaction, behavioural regulation, health-related quality of life, physical self-worth, anxiety and depression were measured at programme entry, exit and six month post-programme. During the programme, increases in autonomy satisfaction predicted positive changes in behavioural regulation, and improvements in competence and relatedness satisfaction predicted improvements in behavioural regulation and well-being. Competence satisfaction also positively predicted habitual physical activity. Decreases in external regulation and increases in intrinsic motivation predicted improvements in physical self-worth and physical well-being, respectively. Significant longitudinal relationships were identified whereby changes during the programme predicted changes in habitual physical activity and the mental quality of life from exit to six month follow-up. Findings provide insight into the factors explaining psychological changes seen during CR. They highlight the importance of increasing patients' perceptions of psychological need satisfaction and self-determined motivation to improve well-being during the structured component of a CR programme and longer term physical activity.

  7. The theory of an active magnetic regenerative refrigerator

    NASA Technical Reports Server (NTRS)

    Barclay, J. A.

    1983-01-01

    The adiabatic temperature change with field which is limited to about 2 K/Tesla for ferromagnets near their Curie temperatures by the change of magnetization with temperature and the lattice heat capacity is discussed. Practical magnetic refrigerators operate on a regenerative cycle such as the Brayton cycle. This cycle can be executed through the use of an active magnetic regenerator, i.e., a regenerator composed of magnetic material that is cycled in an out of a magnetic field with appropriate fluid flows. The theory of these devices is predicted by solving the partial differential equations that describe fluid and the magnetic solid. The active magnetic regenerator is described along with the method of calculation. Temperature profiles for a normal regenerator and a magnetic regenerative refrigerator are shown.

  8. A situation-specific theory of Midlife Women's Attitudes Toward Physical Activity (MAPA).

    PubMed

    Im, Eun-Ok; Stuifbergen, Alexa K; Walker, Lorraine

    2010-01-01

    This paper presents a situation specific theory-the Midlife Women's Attitudes Toward Physical Activity (MAPA) theory-that explains how women's attitudes toward physical activity influence their participation in physical activity. Using the integrative approach of Im, the theory was developed based on the Attitude, Social Influence, and Self Efficacy Model; a review of the related literature; and a study of women's attitudes toward physical activity. As a situation-specific theory, the MAPA theory can be linked easily to nursing practice and research projects related to physical activity in midlife women, especially interventions aimed at increasing midlife women's participation in physical activity.

  9. Minimal continuum theories of structure formation in dense active fluids

    NASA Astrophysics Data System (ADS)

    Dunkel, Jörn; Heidenreich, Sebastian; Bär, Markus; Goldstein, Raymond E.

    2013-04-01

    Self-sustained dynamical phases of living matter can exhibit remarkable similarities over a wide range of scales, from mesoscopic vortex structures in microbial suspensions and motility assays of biopolymers to turbulent large-scale instabilities in flocks of birds or schools of fish. Here, we argue that, in many cases, the phenomenology of such active states can be efficiently described in terms of fourth- and higher-order partial differential equations. Structural transitions in these models can be interpreted as Landau-type kinematic transitions in Fourier (wavenumber) space, suggesting that microscopically different biological systems can share universal long-wavelength features. This general idea is illustrated through numerical simulations for two classes of continuum models for incompressible active fluids: a Swift-Hohenberg-type scalar field theory, and a minimal vector model that extends the classical Toner-Tu theory and appears to be a promising candidate for the quantitative description of dense bacterial suspensions. We discuss how microscopic symmetry-breaking mechanisms can enter macroscopic continuum descriptions of collective microbial motion near surfaces, and conclude by outlining future applications.

  10. The Importance of Emotion in Theories of Motivation: Empirical, Methodological, and Theoretical Considerations from a Goal Theory Perspective

    ERIC Educational Resources Information Center

    Turner, Julianne C.; Meyer, Debra K.; Schweinle, Amy

    2003-01-01

    Despite its importance to educational psychology, prominent theories of motivation have mostly ignored emotion. In this paper, we review theoretical conceptions of the relation between motivation and emotion and discuss the role of emotion in understanding student motivation in classrooms. We demonstrate that emotion is one of the best indicators…

  11. The Value of Failing in Career Development: A Chaos Theory Perspective

    ERIC Educational Resources Information Center

    Pryor, Robert G. L.; Bright, James E. H.

    2012-01-01

    Failing is a neglected topic in career development theory and counselling practice. Most theories see failing as simply the opposite of success and something to be avoided. It is contended that the Chaos Theory of Careers with its emphasis on complexity, uncertainty and consequent human imitations, provides a conceptually coherent account of…

  12. Antecedents and Trajectories of Achievement Goals: A Self-Determination Theory Perspective

    ERIC Educational Resources Information Center

    Ciani, Keith D.; Sheldon, Kennon M.; Hilpert, Jonathan C.; Easter, Matthew A.

    2011-01-01

    Background: Research has shown that both achievement goal theory and self-determination theory (SDT) are quite useful in explaining student motivation and success in academic contexts. However, little is known about how the two theories relate to each other. Aim: The current research used SDT as a framework to understand why students enter classes…

  13. An Exploratory Study of Elementary Classroom Teachers' Physical Activity Promotion from a Social Learning Perspective

    ERIC Educational Resources Information Center

    Webster, Collin A.; Buchan, Heather; Perreault, Melanie; Doan, Rob; Doutis, Panayiotis; Weaver, Robert Glenn

    2015-01-01

    Despite its recommended use, physical activity promotion in the academic classroom (PAPAC) has received little attention in terms of the factors that help to facilitate it. In this study, a social learning perspective was adopted to examine the role of physical activity biographies in generalist classroom teachers' (CTs) PAPAC. CTs (N = 213) were…

  14. Student Views on Assessment Activities: Perspectives from Their Experience on an Undergraduate Programme

    ERIC Educational Resources Information Center

    Healy, Margaret; McCutcheon, Maeve; Doran, John

    2014-01-01

    Research on assessment activities has considered student responses to specific initiatives, but broader concerns underlying these responses have not been fully explored. Using a survey methodology, this paper explores how students view assessment activities, from the perspective of their experience on a four-year undergraduate programme,…

  15. Activities of the O&M committee history & future perspectives

    SciTech Connect

    Poulis, D.S.

    1996-12-01

    This paper gives an overview of the Committee on Operation and Maintenance of Nuclear Power Plants, hereafter referred to as the O&M Committee, formed in June 1975 when the American National Standard Institute`s Committee on Reactor Plants and their Maintenance was disbanded. The O&M Committee`s history, structure, current focus and future perspectives will be presented. The purpose of this paper is to give information to industry and the public of the Committee`s on-going effort to make accurate and timely responses to the needs of the nuclear industry.

  16. Developing policy solutions for a more active nation: Integrating economic and public health perspectives.

    PubMed

    Bleich, Sara N; Sturm, Roland

    2009-10-01

    Both economic and public health/medical perspectives play an important role in the policy process but often approach policy questions in an incompatible way. Harnessing any synergy requires an understanding of the other perspective. We begin by comparing and contrasting the economic and public health perspectives, including introducing relevant economic concepts. We next identify economic considerations for the development of environmental incentives that promote physical activity. We then assess features of the political environment which could impact the success of policy alternatives aimed at increasing physical activity. We conclude with several policy levers that may promote active living. Throughout the manuscript, we use the term economics to refer to classical economics and utility maximization rather than behavioral economics. In addition, we focus mostly on normative economics (which offers prescriptions for what should be done) rather than positive economics (which offers predictions of economic outcomes conditional on various hypothetical scenarios).

  17. Theory of Mind and embedding of perspective: A psychological test of a literary “sweet spot”

    PubMed Central

    Whalen, D. H.; Zunshine, Lisa; Holquist, Michael

    2013-01-01

    Theory of Mind (ToM) has been proposed to explain social interactions, with real people but also with fictional characters, by interpreting their mind as well as our own. “Perspective embedding” exploits ToM by placing events in characters’ minds (e.g., “he remembered she was home”). Three levels of embedment, common in literature, may be a “sweet spot” that provides enough information about a character’s motivation, but not a confusing over-abundance. Here, we use short vignettes with 1 or 3 characters and 0-5 levels of perspective embedding in two reading studies to see whether these preferences might be related to processing ease. Self-paced readers were fastest with one level of embedment, increasingly slower as embedment increased; vignettes without embedment were approximately as slow as level 4. With both self-paced and imposed timing, error rates on probe questions increased only at the fifth level. Readers seem to prefer literary texts in which ToM operations are obvious due to embedding of perspectives within the narrative but still somewhat challenging. PMID:23741659

  18. We are what we do: Examining learner-generated content in the anatomy laboratory through the lens of activity theory.

    PubMed

    Doubleday, Alison F; Wille, Sarah J

    2014-01-01

    Video and photography are often used for delivering content within the anatomical sciences. However, instructors typically produce these resources to provide instructional or procedural information. Although the benefits of learner-generated content have been explored within educational research, virtually no studies have investigated the use of learner-generated video and photograph content within anatomy dissection laboratories. This study outlines an activity involving learner-generated video diaries and learner-generated photograph assignments produced during anatomy laboratory sessions. The learner-generated photographs and videos provided instructors with a means of formative assessment and allowed instructors to identify evidence of collaborative behavior in the laboratory. Student questionnaires (n = 21) and interviews (n = 5), as well as in-class observations, were conducted to examine student perspectives on the laboratory activities. The quantitative and qualitative data were examined using the framework of activity theory to identify contradictions between student expectations of, and engagement with, the activity and the actual experiences of the students. Results indicate that learner-generated photograph and video content can act as a rich source of data on student learning processes and can be used for formative assessment, for observing collaborative behavior, and as a starting point for class discussions. This study stresses the idea that technology choice for activities must align with instructional goals. This research also highlights the utility of activity theory as a framework for assessing classroom and laboratory activities, demonstrating that this approach can guide the development of laboratory activities.

  19. Theory of activated transport in bilayer quantum Hall systems.

    PubMed

    Roostaei, B; Mullen, K J; Fertig, H A; Simon, S H

    2008-07-25

    We analyze the transport properties of bilayer quantum Hall systems at total filling factor nu=1 in drag geometries as a function of interlayer bias, in the limit where the disorder is sufficiently strong to unbind meron-antimeron pairs, the charged topological defects of the system. We compute the typical energy barrier for these objects to cross incompressible regions within the disordered system using a Hartree-Fock approach, and show how this leads to multiple activation energies when the system is biased. We then demonstrate using a bosonic Chern-Simons theory that in drag geometries current in a single layer directly leads to forces on only two of the four types of merons, inducing dissipation only in the drive layer. Dissipation in the drag layer results from interactions among the merons, resulting in very different temperature dependences for the drag and drive layers, in qualitative agreement with experiment.

  20. The activation strain model and molecular orbital theory

    PubMed Central

    Wolters, Lando P; Bickelhaupt, F Matthias

    2015-01-01

    The activation strain model is a powerful tool for understanding reactivity, or inertness, of molecular species. This is done by relating the relative energy of a molecular complex along the reaction energy profile to the structural rigidity of the reactants and the strength of their mutual interactions: ΔE(ζ) = ΔEstrain(ζ) + ΔEint(ζ). We provide a detailed discussion of the model, and elaborate on its strong connection with molecular orbital theory. Using these approaches, a causal relationship is revealed between the properties of the reactants and their reactivity, e.g., reaction barriers and plausible reaction mechanisms. This methodology may reveal intriguing parallels between completely different types of chemical transformations. Thus, the activation strain model constitutes a unifying framework that furthers the development of cross-disciplinary concepts throughout various fields of chemistry. We illustrate the activation strain model in action with selected examples from literature. These examples demonstrate how the methodology is applied to different research questions, how results are interpreted, and how insights into one chemical phenomenon can lead to an improved understanding of another, seemingly completely different chemical process. WIREs Comput Mol Sci 2015, 5:324–343. doi: 10.1002/wcms.1221 PMID:26753009

  1. A Social Cognitive Perspective of Physical-Activity-Related Behavior in Physical Education

    ERIC Educational Resources Information Center

    Martin, Jeffrey J.; Kulinna, Pamela Hodges

    2005-01-01

    The purpose of the current study was to examine student and teacher physical-activity-related behavior using the theory of planned behavior and self-efficacy theory. Although teachers reported an overwhelmingly positive attitude toward teaching physical activity lessons to promote fitness development, they only devoted 4% of their class time to…

  2. Emotion at Work: A Contribution to Third-Generation Cultural-Historical Activity Theory

    ERIC Educational Resources Information Center

    Roth, Wolff-Michael

    2007-01-01

    Second-generation cultural-historical activity theory, which drew its inspiration from Leont'ev's work, constituted an advance over Vygotsky's first-generation theory by explicitly articulating the dialectical relation between individual and collective. As part of an effort to develop third-generation-historical activity theory, I propose in this…

  3. An Overview of Cultural Historical Activity Theory (CHAT) Use in Classroom Research 2000 to 2009

    ERIC Educational Resources Information Center

    Nussbaumer, Doris

    2012-01-01

    Western educational researchers have eagerly accepted activity theory (AT) also known as cultural historical activity theory (CHAT) to collect and analyze data in rich description of complex situations. As this theory is applicable to a wide variety of disciplines, this review is limited to education and specifically to qualitative studies of…

  4. A Case Study Analysis of a Constructionist Knowledge Building Community with Activity Theory

    ERIC Educational Resources Information Center

    Ang, Chee S.; Zaphiris, Panayiotis; Wilson, Stephanie

    2011-01-01

    This article investigates how activity theory can help research a constructionist community. We present a constructionist activity model called CONstructionism Through ACtivity Theory (CONTACT) model and explain how it can be used to analyse the constructionist activity in knowledge building communities. We then illustrate the model through its…

  5. Comment: Affect Control Theory and Cultural Priming: A Perspective from Cultural Neuroscience.

    PubMed

    Pornpattananangkul, Narun; Chiao, Joan Y

    2014-04-01

    Affect control theory posits that emotions are constructed by social and cultural forces. Rogers, Schröder, and von Scheve (2014) introduce affect control theory as a conceptual and methodological "hub," linking theories from different disciplines across levels of analysis. To illustrate this further, we apply their framework to cultural priming, an experimental technique in cultural psychology and neuroscience for testing how exposure to cultural symbols (e.g., words and pictures) changes people's behavior, cognition, and emotion. Our analysis supports the use of affect control theory in linking different levels of analysis while leaving some opening questions for improving such a framework in future research.

  6. The Dyadic Nature of Bullying and Victimization: Testing a Dual-Perspective Theory

    ERIC Educational Resources Information Center

    Veenstra, Rene; Lindenberg, Siegwart; Zijlstra, Bonne J. H.; De Winter, Andrea F.; Verhulst, Frank C.; Ormel, Johan

    2007-01-01

    For this study, information on "Who Bullies Who" was collected from 54 school classes with 918 children (M age = 11) and 13,606 dyadic relations. Bullying and victimization were viewed separately from the point of view of the bully and the victim. The two perspectives were highly complementary. The probability of a bully-victim…

  7. Cross-Cultural Perspectives in Human Development: Theory, Research and Applications.

    ERIC Educational Resources Information Center

    Saraswathi, T. S., Ed.

    This book is based on lectures delivered by 12 cross-cultural social science scholars drawn from 7 countries to address critical issues related to knowledge construction in human development and allied disciplines. The book is organized into two major sections. Section 1 focuses on theoretical perspectives and Section 2 highlights ongoing research…

  8. Learner Perspectives of Online Problem-Based Learning and Applications from Cognitive Load Theory

    ERIC Educational Resources Information Center

    Chen, Ruth

    2016-01-01

    Problem-based learning (PBL) courses have historically been situated in physical classrooms involving in-person interactions. As online learning is embraced in higher education, programs that use PBL can integrate online platforms to support curriculum delivery and facilitate student engagement. This report describes student perspectives of the…

  9. Counseling Theory: Understanding the Trend toward Eclecticism from a Developmental Perspective.

    ERIC Educational Resources Information Center

    Brabeck, Mary M.; Welfel, Elizabeth Reynolds

    1985-01-01

    Examines eclecticism in counseling from a developmental perspective. Suggests that an individual's view of eclecticism may be influenced by his/her level of intellectual development. Discusses two types of eclecticism: one recognizes alternatives and the other seeks to limit them. Includes comments and further suggestions by other authors and a…

  10. CTE Teachers' Perspectives on the Process of CTE and Science Content Integration: A Grounded Theory

    ERIC Educational Resources Information Center

    Spindler, Matthew Kenneth

    2011-01-01

    The integration of career and technical education (CTE) and academic curricular content that capitalizes on natural and inherent connections represents a challenge for CTE professionals. The research question that was used to guide the current study was: What are CTE teachers' perspectives of and experiences with the process of CTE and science…

  11. Crossing Borders in Literacy and Science Instruction: Perspectives on Theory and Practice

    ERIC Educational Resources Information Center

    Saul, E. Wendy

    2004-01-01

    This collection brings together the best minds in education to explore the literacy-science connection and to reduce the lack of understanding between the science and humanities communities. The articles cover a range of topics and perspectives, from quasitheoretical pieces and literature reviews to case studies and evaluations of particular…

  12. ESL Theory-Practice Dynamics: The Difficulty of Integrating Sociocultural Perspectives into Pedagogical Practices

    ERIC Educational Resources Information Center

    Ajayi, Lasisi

    2008-01-01

    The purpose of this study is to examine English as a second language (ESL) teachers' sensitivity to their students' social-cultural backgrounds and the kind of constraints they face as they translate sociocultural perspectives into practice. Through both quantitative (questionnaire surveys) and qualitative (interviews) analysis, the study reports…

  13. Designing an Educational Game, Simulation or Workshop: A Change Theory Perspective.

    ERIC Educational Resources Information Center

    Cryer, Patricia

    1986-01-01

    Presents theoretical perspectives of change of Benne, Chin, Lewin, and Rogers, and draws out strategies that designers of games, simulations, and workshops may find useful. Highlights include rational/empirical, normative/re-educative, and power/coercive strategies; Lewin's force-field model; and Rogers' stage model. (MBR)

  14. Language Ideologies: Critical Perspectives on the Official English Movement. Volume 2: History, Theory, and Policy.

    ERIC Educational Resources Information Center

    Gonzalez, Roseann Duenas, Ed.

    This collection of essays addresses the complicated and divisive issues at the heart of the debate over language diversity and the English Only movement in United States public education. Blending social, political, and legal analyses of the ideologies of language with perspectives on the impact of the English Only movement on education and in…

  15. Enhancing Excellence and Equity in Schooling: Modality Theory, an International Perspective

    ERIC Educational Resources Information Center

    Chen, Hsin-Tzu; Ansalone, George

    2008-01-01

    This international research examines the learning style preferences of Taiwanese students by gender and age in an attempt to determine which of the five learning style stimuli (environmental, emotional, sociological, physiological and psychological) are more likely to be a factor in student academic success. Utilizing an international perspective,…

  16. Active-Passive-Intuitive Learning Theory: A Unified Theory of Learning and Development

    ERIC Educational Resources Information Center

    Sigette, Tyson

    2009-01-01

    This paper addresses many theories of learning and human development which are very similar with regards as to how they suggest learning occurs. The differences in most of the theories exist in how they treat the development of the learner compared to methods of teaching. Most of the major learning theories taught to educators today are based on…

  17. Activity Engagement: Perspectives from Nursing Home Residents with Dementia

    PubMed Central

    Tak, Sunghee H.; Kedia, Satish; Tongumpun, Tera Marie; Hong, Song Hee

    2014-01-01

    Engagement in social and leisure activities is an indicator of quality of life and well-being in nursing homes. There are few studies in which nursing home residents with dementia self-reported their experiences in activity engagement. This qualitative study describes types of current activity involvement and barriers to activities as perceived by nursing home residents with dementia. Thirty-one residents participated in short, open-ended interviews and six in in-depth interviews. Thematic content analysis showed that participants primarily depended on activities organized by their nursing homes. Few participants engaged in self-directed activities such as walking, visiting other residents and family members, and attending in church services. Many residents felt they had limited opportunities and motivation for activities. They missed past hobbies greatly but could not continue them due to lack of accommodation and limitation in physical function. Environmental factors, along with fixed activity schedule, further prevented them from engaging in activities. Residents with dementia should be invited to participate in activity planning and have necessary assistance and accommodation in order to engage in activities that matter to them. Based on the findings, a checklist for individualizing and evaluating activities for persons with dementia is detailed. PMID:25489122

  18. A Practitioner's Perspective on the Implications of Attachment Theory for Daycare Professionals.

    ERIC Educational Resources Information Center

    Mardell, Benjamin

    1992-01-01

    Outlines attachment theory, focusing on ideas regarding children's attachment to persons other than primary caregivers. Utilizes attachment theory in drawing implications for classroom operation, day care center organization, and governmental policies. The attachment paradigm is seen as providing a theoretical basis for improving day care…

  19. School-Age Care from the Perspective of Social Role Theory.

    ERIC Educational Resources Information Center

    Ollhoff, Jim; Ollhoff, Laurie

    Within the literature of social psychology, there exists a body of information that deals with role theory, defined as the expectations persons have at any given time and the norms that govern their behavior. This paper discusses role theory as it applies to school-age child caregivers and as part of the process of professionalism.…

  20. Overcoming the Problem of Embedding Change in Educational Organizations: A Perspective from Normalization Process Theory

    ERIC Educational Resources Information Center

    Wood, Phil

    2017-01-01

    In this article, I begin by outlining some of the barriers which constrain sustainable organizational change in schools and universities. I then go on to introduce a theory which has already started to help explain complex change and innovation processes in health and care contexts, Normalization Process Theory. Finally, I consider what this…

  1. The Role of Theory in Teacher Education: Reconsidered from a Student Teacher Perspective

    ERIC Educational Resources Information Center

    Sjølie, Ela

    2014-01-01

    With the persistent criticism of teacher education as a backdrop, this article explores the common perception that teacher education is too theoretical. This article takes the view that the student teachers' assumptions regarding the concept of theory affect how they engage with theory during initial teacher education. Using a qualitative…

  2. Complexity, Chaos, and Nonlinear Dynamics: A New Perspective on Career Development Theory

    ERIC Educational Resources Information Center

    Bloch, Deborah P.

    2005-01-01

    The author presents a theory of career development drawing on nonlinear dynamics and chaos and complexity theories. Career is presented as a complex adaptive entity, a fractal of the human entity. Characteristics of complex adaptive entities, including (a) autopiesis, or self-regeneration; (b) open exchange; (c) participation in networks; (d)…

  3. Information as Property and as a Public Good: Perspectives from the Economic Theory of Property Rights.

    ERIC Educational Resources Information Center

    McCain, Roger A.

    1988-01-01

    Reviews the economic theory of property rights and explores four applications of the transaction cost theory of property rights and free distribution in the economics of information: (1) copying technology; (2) computer software and copy protection; (3) satellite television and encryption; and (4) public libraries. (56 references) (MES)

  4. A Swedish Perspective on the Importance of Bourdieu's Theories for Career Counseling.

    ERIC Educational Resources Information Center

    Lindh, Gunnel; Dahlin, Einar

    2000-01-01

    For many years, professional career counseling practice has been based on psychological rather than sociological theories. This paper argues that sociological theories, particularly those of French sociologist Pierre Bourdieu (P. Bourdieu and L. Wacquant, 1992) are important for the framework of the counselor. (Author/JDM)

  5. A Listener's Perspective: Using Communication Theory and Practice to Reframe Persuasion in the Communication Classroom

    ERIC Educational Resources Information Center

    Toon, Kellie L.; Wright, Courtney N.

    2013-01-01

    Social influence is presented throughout the communication curriculum, from the introductory public speaking course to upper-level courses devoted to communication theory and advanced study of persuasion. Within the progression of these courses, there is often a shift in emphasis from practice to theory. For example, the public speaking course is…

  6. Creative Thinking from an Information Processing Perspective: A New Approach to Mednick's Theory of Associative Hierarchies.

    ERIC Educational Resources Information Center

    Coney, Jeffrey; Serna, Peta

    1995-01-01

    To evaluate Mednick's theory of the creative thinking process, an associative priming paradigm was used to measure latencies to lexical decisions primed by associations of low, medium, or high strength with 20 high-creative and 20 low-creative high school students. Mednick's theory that creative individuals show a flatter associative hierarchy…

  7. The Orientation Theory of Dyslexia: Uniting Current Schisms through an Ecological Perspective

    ERIC Educational Resources Information Center

    Poole, Jennifer

    2010-01-01

    In earlier work the concept of "Orientation" (O) was proposed as the key factor in successful literacy acquisition. This article develops that idea further to discuss the potential of "Orientation Theory" (OT) to unite current conflicts between apparently opposing theories of dyslexia. After briefly outlining these theoretical…

  8. The Government-Higher Education Institution Relationship: Theoretical Considerations from the Perspective of Agency Theory

    ERIC Educational Resources Information Center

    Kivisto, Jussi

    2005-01-01

    This article introduces the agency theory to the field of higher education research. By applying agency theory to the inter-organisational relationship between government and higher education institutions, it is possible to illustrate general problems facing control and governance in a more theoretical and analytical way. The conceptual arsenal…

  9. Sequential Progressions in a Theory-of-Mind Scale: Longitudinal Perspectives

    ERIC Educational Resources Information Center

    Wellman, Henry M.; Fang, Fuxi; Peterson, Candida C.

    2011-01-01

    Consecutive retestings of 92 U.S. preschoolers (n = 30), Chinese preschoolers (n = 31), and deaf children (n = 31) examined whether the sequences of development apparent in cross-sectional results with a theory-of-mind scale also appeared in longitudinal assessment. Longitudinal data confirmed that theory-of-mind progressions apparent in…

  10. A Half-Century of "Educational Theory": Perspectives on the Past, Present, and Future.

    ERIC Educational Resources Information Center

    Burbules, Nicholas C.

    2000-01-01

    Introduces a collection of papers that examine the past, present, and future of the journal, Educational Theory, and the field of educational theory, highlighting the 1950s-90s. The essays focus on: being and doing; memory and forgetfulness; diversity and divergence; and deconstruction and reconstruction. Several recurrent themes evident…

  11. Parental Involvement in the Habilitation Process Following Children's Cochlear Implantation: An Action Theory Perspective

    ERIC Educational Resources Information Center

    Zaidman-Zait, Anat; Young, Richard A.

    2008-01-01

    Action theory and the qualitative action-project method are used in this study to address and illustrate the complexity of parenting children who have received cochlear implants (CIs) as well as the intentionality of parents engaged in that process. "Action" refers to individual and joint goal-directed and intentional behaviors. Action theory has…

  12. A Classical Test Theory Perspective on LSAT Local Item Dependence. LSAC Research Report Series. Statistical Report.

    ERIC Educational Resources Information Center

    Reese, Lynda M.

    This study extended prior Law School Admission Council (LSAC) research related to the item response theory (IRT) local item independence assumption into the realm of classical test theory. Initially, results from the Law School Admission Test (LSAT) and two other tests were investigated to determine the approximate state of local item independence…

  13. Anglo-American nursing theory, individualism and mental health care: a social conflict perspective.

    PubMed

    Leighton, Kevin

    2004-01-01

    This paper uses social conflict theory to reconsider the relationship of American nursing theory and individualised mental health care in the UK. It is argued that nursing theory has developed within a context of 'American dream' individualism, and that this ideology may be problematic for some UK mental health nurses and service users whose values and beliefs are those of different socio-political traditions. The paper explores the historical background of Anglo-American nursing theory, and then uses conflict theory to generate challenging propositions about the culture bias and political instrumentality of individualised care in mental health settings. In so doing, it critiques the 'scientific' and 'liberal' preconceptions of individualised care which have dominated mental health care policy for over a decade.

  14. Toward a Relationship Perspective on Aggression among Schoolchildren: Integrating Social Cognitive and Interdependence Theories

    PubMed Central

    Card, Noel A.

    2011-01-01

    The traditional psychological approach of studying aggression among schoolchildren in terms of individual differences in aggression and in victimization has been valuable in identifying prevalence rates, risk, and consequences of involvement in aggression. However, it is argued that a focus on aggressor-victim relationships is warranted based on both conceptual and empirical grounds. Such a shift in focus requires modification and integration of existing theories of aggression, and this paper integrates social cognitive theory and interdependence theory to suggest a new, interdependent social cognitive theory of aggression. Specifically, this paper identifies points of overlap and different foci between these theories, and it illustrates their integration through a proposed model of the emergence of aggressor-victim interactions and relationships. The paper concludes that expanding consideration to include aggressor-victim relationships among schoolchildren offers considerable theoretical, empirical, and intervention opportunities. PMID:26985397

  15. Perezhivanie and classroom discourse: a cultural-historical perspective on "Discourse of design based science classroom activities"

    NASA Astrophysics Data System (ADS)

    Adams, Megan; March, Sue

    2015-06-01

    Flavio Azevedo, Peggy Martalock and Tugba Keser challenge the `argumentation focus of science lessons' and propose that through a `design-based approach' emergent conversations with the teacher offer possibilities for different types of discussions to enhance pedagogical discourse in science classrooms. This important paper offers a "preliminary contribution to a general theory" regarding the link between activity types and discourse practices. Azevedo, Martalock and Keser offer a general perspective with a sociocultural framing for analysis of classroom discourse. Interestingly the specific concepts drawn upon are from conversation analysis; there are few sociocultural concepts explored in detail. Therefore, in this article we focus on a cultural historical (Vygotsky in The collected works of L. S. Vygotsky. The history and development of higher mental functions, vol 4. Plenum Press, New York, 1987; The Vygotsky reader. Black, Cambridge, 1994) methodology to explore, analyse and explain how we would use a different theoretical lens. We argue that a cultural historical reading of argumentation in science lessons and design based activity will expand Azevedo, Martalock and Keser's proposed general theory of activity types and discourse practices. Specifically, we use Lev Vygotksy's idea of perezhivanie as the unit of analysis to reconceptualise this important paper. We focus on the holistic category of students' emotional experience through discourse while developing scientific awareness.

  16. [AN EVALUATION OF JUSTICE AND RIGHT TO HEALTH CONCEPTS IN THE PERSPECTIVES OF ETHICAL THEORIES].

    PubMed

    Ekmekçi, Perihan Elif; Arda, Berna

    Right to health is considered as a fundamental human right. However the realization of right to health is facing obstacles due to the scarce resources which are needed for the provision of health services. Besides the vast technological improvements in medical area leads to the development of diagnosis and treatment possibilities each and every day. Thus, the provision of health services becomes a subject of distributive justice. To define the concept of justice, first one should identify the conditions of demanding right to have something and then determine how and who is obliged to give the deserved. Ethical theories form their own paradigms of acting right regarding their anchor points and priority values. The basic concepts such as justice or right to health are considered and conceptualized within the paradigms of the ethical theories. Thus some ethical theories consider right to health as a natural constituent of human being, while some may consider it contextual and others may reject it completely. In a similar vein, justice and related concepts of justice such as formal and material principles of justice differ regarding the paradigm of the ethical theory in which we position ourselves. The paradigms of ethical theories demand different approaches from each other both in defining the concepts and implementations in practical life. This paper sets forth how justice and right to health is conceptualized in the virtue ethics, deontological ethics, liberal ethical theory and communitarian ethical theories. To this end first the general frame of each ethical theory and how justice is conceptualized within this frame is defined. Following that a discussion of the possibility of justification of the right to health within the context of ethical theory is perused.

  17. Adolescents' Perspectives on the Barriers and Facilitators of Physical Activity: A Systematic Review of Qualitative Studies

    ERIC Educational Resources Information Center

    Martins, João; Marques, Adilson; Sarmento, Hugo; Carreiro da Costa, Francisco

    2015-01-01

    This article examined qualitative studies of adolescents' perspectives about the facilitators and barriers of physical activity, published from 2007 to 2014. A systematic review of "Web of Science", "EBSCO", "Psychinfo" and "ERIC" databases was performed according to Preferred Reporting Items for Systematic…

  18. Photonic Network R&D Activities in Japan-Current Activities and Future Perspectives

    NASA Astrophysics Data System (ADS)

    Kitayama, Ken-Ichi; Miki, Tetsuya; Morioka, Toshio; Tsushima, Hideaki; Koga, Masafumi; Mori, Kazuyuki; Araki, Soichiro; Sato, Ken-Ichi; Onaka, Hiroshi; Namiki, Shu; Aoyama, Tomonori

    2005-10-01

    R&D activities on photonic networks in Japan are presented. First, milestones in current ongoing R&D programs supported by Japanese government agencies are introduced, including long-distance and wavelength division multiplexing (WDM) fiber transmission, wavelength routing, optical burst switching (OBS), and control-plane technology for IP backbone networks. Their goal was set to evolve a legacy telecommunications network to IP-over-WDM networks by introducing technologies for WDM and wavelength routing. We then discuss the perspectives of so-called PHASE II R&D programs for photonic networks over the next 5 years until 2010, by focusing on the report that has been recently issued by the Photonic Internet Forum (PIF), a consortium that has major carriers, telecom vendors, and Japanese academics as members. The PHASE II R&D programs should serve to establish a photonic platform to provide abundant bandwidth on demand, at any time on a real-time basis, through the customer's initiative to promote bandwidth-rich applications, such as grid computing, real-time digital-cinema streaming, medical and educational applications, and network storage in e-commerce.

  19. A new perspective on the radio active zone at the Galactic center - feedback from nuclear activities

    NASA Astrophysics Data System (ADS)

    Zhao, J.-H.; Morris, M. R.; Goss, W. M.

    2014-05-01

    Based on our deep image of Sgr A using broadband data observed with the VLA† at 6 cm, we present a new perspective of the radio bright zone at the Galactic center. We further show the radio detection of the X-ray Cannonball, a candidate neutron star associated with the Galactic center SNR Sgr A East. The radio image is compared with the Chandra X-ray image to show the detailed structure of the radio counterparts of the bipolar X-ray lobes. The bipolar lobes are likely produced by the winds from the activities within Sgr A West, which could be collimated by the inertia of gas in the CND, or by the momentum driving of Sgr A*; and the poloidal magnetic fields likely play an important role in the collimation. The less-collimated SE lobe, in comparison to the NW one, is perhaps due to the fact that the Sgr A East SN might have locally reconfigured the magnetic field toward negative galactic latitudes. In agreement with the X-ray observations, the time-scale of ˜1 × 104 yr estimated for the outermost radio ring appears to be comparable to the inferred age of the Sgr A East SNR.

  20. Theory and practical applications of a wellness perspective in diabetes education.

    PubMed

    Klepac, M J

    1996-01-01

    From a wellness perspective, health is viewed in a broad sense that encompasses interrelationships among physical, mental, social, emotional, and spiritual components. This approach to health is particularly applicable in diabetes management because diabetes affects all areas of a person's life--work, family, social, and recreational. The boundaries of diabetes education need to be expanded to address this holistic view of health. The integration of a wellness approach in an adult-centered diabetes education program is described to offer a new perspective in diabetes management and education. This outpatient, hospital-based program is provided at regular intervals for small groups of 6 to 12 participants, most of whom have type II diabetes. Support for this wellness direction in diabetes education is discussed in relation to theoretical principles of the wellness model, including similarities and differences with other concepts such as empowerment and self-efficacy. Practical applications of the wellness perspective are clarified using this specific outpatient program as a case example.

  1. [Research and educational activities through perspective of pharmacognosy].

    PubMed

    Ito, Michiho

    2010-05-01

    The research field of pharmacognosy covers a wide variety of subjects based on a knowledge of natural medicines and extends its influence in all surrounding directions. Pharmacognosy itself is generally regarded as one of the branches of pharmaceutical science although the processes to achieve the objectives are not always analytical as are other branches in this field. The extraordinarily long history and broad view provide researchers opportunities to conduct unique projects which can enhance the perspective of the subject in the future. Fieldwork is one feature of scientific research and is viewed as more valuable to projects in pharmacognosy than to those in other fields of pharmaceutical sciences. The frame of my research has been formed around fieldwork; projects targeted are achieved based on information and samples gathered through this means, and further studies are suggested by the ideas obtained. Some of the results and experiences gathered in these projects are described in this article for discussion of the future image of the pharmacognosial field.

  2. Student Activism within Christian College Cultures: A Symbolic Interactionist Perspective

    ERIC Educational Resources Information Center

    Cole, Brian E.

    2014-01-01

    This study contributes to the understanding of the structural and cultural influences of Christian college environments on student activism through the framework of symbolic interactionism (Blumer, 1969; Mead, 1934). The goal of this research was to examine how the students at Christian institutions understand and engage in activism within their…

  3. Physical Activity in the Mass Media: An Audience Perspective

    ERIC Educational Resources Information Center

    Smith, Ben J.; Bonfiglioli, Catriona M. F.

    2015-01-01

    Physical activity's role in promoting health is highlighted in public health campaigns, news and current affairs, reality television and other programs. An investigation of audience exposure, beliefs and reactions to media portrayals of physical activity offers insights into the salience and influence of this communication. An audience reception…

  4. Examining "Active" Procrastination from a Self-Regulated Learning Perspective

    ERIC Educational Resources Information Center

    Cao, Li

    2012-01-01

    This study examined the notion that active procrastinators are a positive type of procrastinators who possess desirable characteristics similar to non-procrastinators, but different from the traditional passive procrastinators. A two-step procedure was followed to categorise university students (N = 125) as active procrastinators, passive…

  5. Girls' Perspectives: Physical Activity and Self-Esteem.

    ERIC Educational Resources Information Center

    Jaffee, Lynn; Manzer, Rebecca

    1992-01-01

    The relationship between activity and positive self-esteem in girls 9 to 12 years of age was explored in this study. The hypothesis was that the positive relationship between physical activity and positive self-esteem which exists for women also exists for girls. A secondary goal was to gain insight into some of the factors that are associated…

  6. Practising Active Science with Child Refugees: A Clinical Perspective

    ERIC Educational Resources Information Center

    Perrier, Frédéric

    2004-01-01

    In this paper, pilot sessions in Rwanda and Nepal are analysed to evaluate the therapeutic benefit of active science for traumatised child refugees. The nature of the activities, choice of tools, organisation of the sessions, group size, and the role of the educators are investigated. Despite the lack of quantitative assessment, practical…

  7. Physical activity in the mass media: an audience perspective.

    PubMed

    Smith, Ben J; Bonfiglioli, Catriona M F

    2015-04-01

    Physical activity's role in promoting health is highlighted in public health campaigns, news and current affairs, reality television and other programs. An investigation of audience exposure, beliefs and reactions to media portrayals of physical activity offers insights into the salience and influence of this communication. An audience reception study was conducted involving in-depth interviews with 46 adults in New South Wales, Australia. The sample was stratified by gender, age group, area of residence and body mass index. Most respondents could only recall media coverage of physical activity with prompting. Television was the primary channel of exposure, with reality television the dominant source, followed by news programs and sports coverage. The messages most readily recalled were the health risks of inactivity, especially obesity, and the necessity of keeping active. Physical activity was regarded as a matter of personal volition, or for children, parental responsibility. Respondents believed that the media had given physical activity inadequate attention, focused too heavily on risks and not provided practical advice. In Australia, there is a need to counter the framing of physical activity by reality television, and engage the media to generate understanding of the socioecological determinants of inactivity. Physical activity campaigns should deliver positive and practical messages.

  8. Teachers' instructional goals for science practice: Identifying knowledge gaps using cultural-historical activity theory (CHAT)

    NASA Astrophysics Data System (ADS)

    Farrar, Cynthia Hamen

    In AP Biology, the course goal, with respect to scientific acts and reasoning, has recently shifted toward a reform goal of science practice, where the goal is for students to have a scientific perspective that views science as a practice of a community rather than a body of knowledge. Given this recent shift, this study is interested in the gaps that may exist between an individual teacher's instructional goal and the goals of the AP Biology course. A Cultural-Historical Activity Theory (CHAT) methodology and perspective is used to analyze four teachers' knowledge, practice, and learning. Teachers have content knowledge for teaching, a form of knowledge that is unique for teaching called specialized content knowledge. This specialized content knowledge (SCK) defines their instructional goals, the student outcomes they ultimately aim to achieve with their students. The study employs a cultural-historical continuum of scientific acts and reasoning, which represents the development of the AP Biology goal over time, to study gaps in their instructional goal. The study also analyzes the contradictions within their teaching practice and how teachers address those contradictions to shift their instructional practice and learn. The findings suggest that teachers have different interpretations of the AP Biology goals of science practice, placing their instructional goal at different points along the continuum. Based on the location of their instructional goal, different micro-communities of teachers exist along the continuum, comprised of teachers with a shared goal, language, and culture of their AP Biology teaching. The in-depth study of one teacher's AP Biology teaching, using a CHAT perspective, provides a means for studying the mechanisms that connect SCK to classroom actions and ultimately to instructional practice. CHAT also reveals the nature and importance of contradictions or cognitive dissonance in teacher learning and the types of support teachers need to

  9. Translating the Socio-Ecological Perspective Into Multilevel Interventions: Gaps Between Theory and Practice.

    PubMed

    Schölmerich, Vera L N; Kawachi, Ichiro

    2016-02-01

    Multilevel interventions are inspired by socio-ecological models, and seek to create change on various levels-for example by increasing the health literacy of individuals as well as modifying the social norms within a community. Despite becoming a buzzword in public health, actual multilevel interventions remain scarce. In this commentary, we explore the operational and empirical barriers to designing and implementing multilevel interventions, and argue that the current theoretical framework based on the socio-ecological model is insufficient to guide those seeking to design multilevel interventions. We consider two theories, namely, the complementarity principle theory and the risk compensation theory-to address the gap between theory and translation into practice.

  10. The Systemic-Structural Theory of Activity: Applications to the Study of Human Work

    ERIC Educational Resources Information Center

    Bedny, Gregory Z.; Harris, Steven Robert

    2005-01-01

    This article offers an introduction to the central concepts and principles of the Systemic-Structural Theory of Activity (SSTA), an activity-theoretical approach specifically tailored to the analysis and design of human work. In activity theory, cognition is understood both as a process and as a structured system of actions. Building on the…

  11. Activity Theory as a Framework for Designing the Model of College English Listening

    ERIC Educational Resources Information Center

    Zhang, Jianfeng

    2014-01-01

    Activity theory signifies that activities are at the centre of human behaviour and it has been used to study cognitive process in many fields. Nowadays, college English listening learning is time-consuming but less effective in China, so enhancing the performance of listening instruction is a very hot topic. Theoretically, activity theory is able…

  12. Understanding Synchronous Computer-Mediated Classroom Discussion through Cultural-Historical Activity Theory

    ERIC Educational Resources Information Center

    Park, Yangjoo

    2015-01-01

    This study is about graduate students' discourse practices in classroom text-based synchronous computer mediated discussions (SCMD). Cultural historical activity theory (in short, Activity Theory) is the primary theoretical lens through which the data are analyzed. Engeström's (1987) Activity System model among the various theoretical positions or…

  13. Understanding the challenges to facilitating active learning in the resident conferences: a qualitative study of internal medicine faculty and resident perspectives.

    PubMed

    Sawatsky, Adam P; Zickmund, Susan L; Berlacher, Kathryn; Lesky, Dan; Granieri, Rosanne

    2015-01-01

    Background In the Next Accreditation System, the Accreditation Council for Graduate Medical Education outlines milestones for medical knowledge and requires regular didactic sessions in residency training. There are many challenges to facilitating active learning in resident conferences, and we need to better understand resident learning preferences and faculty perspectives on facilitating active learning. The goal of this study was to identify challenges to facilitating active learning in resident conferences, both through identifying specific implementation barriers and identifying differences in perspective between faculty and residents on effective teaching and learning strategies. Methods The investigators invited core residency faculty to participate in focus groups. The investigators used a semistructured guide to facilitate discussion about learning preferences and teaching perspectives in the conference setting and used an 'editing approach' within a grounded theory framework to qualitative analysis to code the transcripts and analyze the results. Data were compared to previously collected data from seven resident focus groups. Results Three focus groups with 20 core faculty were conducted. We identified three domains pertaining to facilitating active learning in resident conferences: barriers to facilitating active learning formats, similarities and differences in faculty and resident learning preferences, and divergence between faculty and resident opinions about effective teaching strategies. Faculty identified several setting, faculty, and resident barriers to facilitating active learning in resident conferences. When compared to residents, faculty expressed similar learning preferences; the main differences were in motivations for conference attendance and type of content. Resident preferences and faculty perspectives differed on the amount of information appropriate for lecture and the role of active participation in resident conferences. Conclusion

  14. Perspective: On the active site model in computational catalyst screening

    NASA Astrophysics Data System (ADS)

    Reuter, Karsten; Plaisance, Craig P.; Oberhofer, Harald; Andersen, Mie

    2017-01-01

    First-principles screening approaches exploiting energy trends in surface adsorption represent an unparalleled success story in recent computational catalysis research. Here we argue that our still limited understanding of the structure of active sites is one of the major bottlenecks towards an ever extended and reliable use of such computational screening for catalyst discovery. For low-index transition metal surfaces, the prevalently chosen high-symmetry (terrace and step) sites offered by the nominal bulk-truncated crystal lattice might be justified. For more complex surfaces and composite catalyst materials, computational screening studies will need to actively embrace a considerable uncertainty with respect to what truly are the active sites. By systematically exploring the space of possible active site motifs, such studies might eventually contribute towards a targeted design of optimized sites in future catalysts.

  15. The Theory of Active Involvement: Processes Underlying Interventions that Engage Adolescents in Message Planning and/or Production

    PubMed Central

    Greene, Kathryn

    2013-01-01

    Adolescence is a time of increased risk-taking and recent intervention strategies have included adolescents planning or producing anti-risk messages for their peers. Although these projects may generate enthusiasm, we know little about message planning or production as a strategy for changing adolescent decision-making and behavior. The paper articulates the Theory of Active Involvement (TAI) to describe and explain the processes through which these active involvement interventions influence adolescents. TAI is based on social cognitive theory’s notion of self-regulation and examines multiple perspective-taking and activating the self-reflection processes. The theory specifically describes the process of cognitive changes experienced by participants in active involvement interventions. The sequence is conceptualized as starting when engagement with the intervention (arousal and involvement) produces skill and knowledge gains (immediate outcomes) that lead to reflection (perceived discrepancy) and then other cognitions (expectancies, norms, intentions), with the ultimate outcome being behavior change. Engaging the target audience in a process of self-reflection is conceptualized as the crucial ingredient for meaningful and sustainable change in cognitions and behavior. This paper provides valuable insight into how active involvement strategies function and how to best design these interventions, particularly those targeting adolescents. PMID:23980581

  16. The dynamics of the nurse-patient relationship: introduction of a synthesized theory from the patient's perspective.

    PubMed

    Halldorsdottir, Sigridur

    2008-12-01

    The nurse-patient relationship is by many considered the core of nursing. In this paper, a synthesized theory on the dynamics of that relationship is introduced from the patient's perspective. It is described as a dynamic lived reality characterized by a sense of spiritual connection which is experienced as a bond of energy. The highest quality of this connection is the life-giving nurse-patient relationship which is greatly empowering for the patient. The prerequisites for the development of the nurse-patient relationship are perceived nurse caring, wisdom and competence in connecting with people. The dialectic nature of this relationship is discussed as well as the six main phases in the nurse-patient relationship development.

  17. Perspectives.

    ERIC Educational Resources Information Center

    Bandy, Patricia, Ed.

    Designed to encourage informed and critical thinking on contemporary political issues and processes, the articles, case studies, and activities in this student handbook can be incorporated into secondary school social studies units on government or current events. Eight chapters cover the presidency, the federal bureaucracy, the Congress, the…

  18. Modes of Engagement in Foreign Language Writing: An Activity Theoretical Perspective

    ERIC Educational Resources Information Center

    Haneda, Mari

    2007-01-01

    This article makes the case for using activity theory to explore the learning and teaching of writing in a foreign language. I illustrate my argument by bringing this theory to bear on a re-examination of the different modes of engagement in writing by university-level students of Japanese as a foreign language that I identified in an earlier…

  19. The Bourgeoisie Dream Factory: Teaching Marx's Theory of Alienation through an Experiential Activity

    ERIC Educational Resources Information Center

    Windsor, Elroi J.; Carroll, Alana M.

    2015-01-01

    Effectively teaching sociological theories to undergraduate students is challenging. Students often enroll in theory courses due to major requirements, not personal interest. Consequently, many students approach the study of theory with anxiety. This study examined the effectiveness of an experiential learning activity designed to teach Karl…

  20. Sociological Understandings of Conduct for a Noncanonical Activity Theory: Exploring Intersections and Complementarities

    ERIC Educational Resources Information Center

    Sawchuk, Peter H.; Stetsenko, Anna

    2008-01-01

    Following a discussion of activity theory as an approach to human development originally rooted in transformational change, we review the historical context and diverse conceptualizations of social conduct from the field of sociology. The discussion of social conduct is broken into theories of social action, theories of enactment, and contemporary…

  1. Using Cultural-Historical Activity Theory to Design and Evaluate an Educational Game in Science Education

    ERIC Educational Resources Information Center

    Lazarou, D.

    2011-01-01

    The aim of this paper is to describe a methodology for using Cultural-Historical Activity Theory (CHAT) at the initial stages of the design process of an educational game, by exploring how the theory can be used as a framework for producing not only usable but also useful computer tools. The research also aimed to investigate how the theory could…

  2. Theory of Mind, Language and Adaptive Functioning in ASD: A Neuroconstructivist Perspective

    PubMed Central

    Bennett, Teresa Ann; Szatmari, Peter; Bryson, Susan; Duku, Eric; Vaccarella, Liezanne; Tuff, Larry

    2013-01-01

    Introduction Neuroconstructivist theories of development highlight the potential effect one developmental domain may have on constraining or facilitating another. Empirical validation of this theory requires further testing in autism spectrum disorders (ASD), and may illuminate the complex interplay of developmental trajectories, particularly in the relationship between predictor and outcome variables. In ASD, language ability is an early predictor of important functional outcomes such as communication and socialization. We aimed to investigate whether theory of mind (ToM) mediates the relation between language ability and adaptive functioning in more cognitively able children with ASD (IQ > 70). Methods Thirty-nine children were followed prospectively every two years from 4–6 years to 12–14 years. Their language and theory of mind abilities and adaptive functioning were tested using the Test of Language Development-2 (the independent variable, at age 6–8 years), the “Eyes Test” (a measure of ToM, the mediator, at age 10–12) and the Vineland Adaptive Behaviour Scales (the outcome variable, at age 12–14). Results ToM mediated an association between language and adaptive functioning in the communication domain, but not in the social domain. Conclusion These results challenge the usefulness of ToM as a unifying theory for ASD deficits and highlight the potential usefulness of a neuroconstructivist framework for prospective studies. PMID:23390428

  3. The impetus theory in judgments about object motion: a new perspective.

    PubMed

    White, Peter A

    2012-12-01

    Several tendencies found in explicit judgments about object motion have been interpreted as evidence that people possess a naive theory of impetus. The theory states that objects that are caused to move by other objects acquire force that determines the kind of motion exhibited by the object, and that this force gradually dissipates over time. I argue that the findings can better be understood as manifestations of a general understanding of externally caused motion based on experiences of acting on objects. Experiences of acting on objects yield the idea that properties of the cause of motion are transmitted to the effect object. This idea functions as a heuristic for explicit predictions of object motion under conditions of uncertainty. This accounts not only for the findings taken as evidence for the impetus theory, but also for several findings that fall outside the scope of the impetus theory. It has also been claimed that judgments about the location at which a moving object disappeared are influenced by the impetus theory. I argue that these judgments are better explained in a different way, as best-guess extrapolations made by the visual system as a practical guide to interactions with the object, such as interception.

  4. Methods of Quantum Field Theory in Condensed Matter Physics ---New Perspectives, Extensions and Applications---

    NASA Astrophysics Data System (ADS)

    Umezawa, H.

    Throughout the course of its development in the past four decades quantum field theory has gradually acquired a very rich structure (much richer in fact than it was originally intended) and now provides us with an effective method in the analysis of many diverse areas of physics; condensed matter physics, high energy particle physics general relativity and cosmology are among the more notable examples. Since condensed matter physics deals with those phenomena in which a system of quanta exist together with a variety of macroscopic objects at finite temperature, it may be said to manifest the fundamental properties of quantum field theory in its widest sense. Thus condensed matter physics has served as a powerful motivating force throughout the growth and development of quantum field theory. This process was indeed initiated by the celebrated Matsubara formalism of finite temperature Green's function method. This process is by no means complete since recent developments in many areas of physics demand a more sophisticated understanding with regard to the fundamental nature of quantum field theory. A brief description of this maturing process of quantum field theory in the past, present and prospects for the future will be the main content of this article.

  5. A perspective on nonresonant and resonant electronic response theory for time-dependent molecular properties.

    PubMed

    Norman, Patrick

    2011-12-14

    The development of electronic response theory in quantum chemistry has been reviewed, starting from the early 1970's and reaching the current state-of-the-art. The general theory has been applied to the calculation of a large number of spectroscopic parameters over the years, and it has been implemented for the majority of standard electronic structure methods. Two formulations of response theory, the Ehrenfest expectation value and the quasi-energy derivative formulation, have turned into leading alternatives for the derivation of computationally tractable expressions of response functions, and they are here reviewed with an attempt to, as far as possible, leave out technical details. A set of four steps are identified as common in derivations of response functions, and the two formulations are compared along this series of steps. Particular emphasis is given to the situation when the oscillation of the weak external electromagnetic field is in resonance with a transition frequency of the system. The formation of physically sound response functions in resonance regions of the spectrum is discussed in light of the causality condition and the Kramers-Kronig relations, and it is achieved in wave function theory by means of the introduction of relaxation parameters in a manner that mimics what one sees in density matrix theory. As a working example, equations are illustrated by their application to a two-state model for para-nitroaniline including the ground and the lowest charge-transfer state in the electric dipole approximation.

  6. Novel perspectives on non-canonical inflammasome activation

    PubMed Central

    Diamond, Catherine Emma; Khameneh, Hanif Javanmard; Brough, David; Mortellaro, Alessandra

    2015-01-01

    Inflammasomes are cytosolic multi-protein complexes that regulate the secretion of the proinflammatory cytokines, IL-1β and IL-18, and induce pyroptosis, an inflammatory form of cell death. The NLRP3 inflammasome is the most well-characterized member of this family and functions by sensing intracellular pathogen- and damage-associated molecular patterns and activating caspase-1, which processes the biologically inactive IL-1β and IL-18 precursors into active cytokines. Recent studies have identified an alternative mechanism of inflammasome activation, termed the non-canonical inflammasome, which is triggered by cytosolic sensing of lipopolysaccharide (LPS) derived from bacteria that have escaped phagolysosomes. This pathway is independent of Toll-like receptor 4 (TLR4), the well-known extracellular receptor for LPS, but instead depends on the inflammatory protease, caspase-11. Although our understanding of caspase-11 activation is still in its infancy, it appears to be an essential mediator of septic shock and attenuates intestinal inflammation. In this review, we bring together the latest data on the roles of caspase-11 and the mechanisms underlying caspase-11-mediated activation of the non-canonical inflammasome, and consider the implications of this pathway on TLR4-independent immune responses to LPS. PMID:27471719

  7. Students' and experts' perspectives on three learning and teaching activities.

    PubMed

    Chan, Zenobia C Y

    2014-09-01

    Nursing is a profession that closely related to human life, and nurses are required to demonstrate critical thinking and creativity in providing health care services. However, traditional teaching approaches usually limit students' autonomy and freedom of expressing their thoughts and feelings. In order to develop the corresponding competence of nursing students, I adopted three teaching innovations, namely writing poems, composing songs, and using role plays in a nursing problem-based learning class in a university in Hong Kong. According to students' reflective notes and comments from two international expert reviewers, participating in these activities is a valuable experience and students were able to develop clinical reasoning, empathy, team spirit, motivation to learn, creativity, and ability to summarise and reconstruct knowledge. It is hoped that more innovative learning activities will be implemented, to prepare professional and ethical nurses in the future. It is also hoped that this study could provide other PBL educators some insights in innovative problem-based learning activities.

  8. The importance of theory in cognitive behavior therapy: a perspective of contextual behavioral science.

    PubMed

    Herbert, James D; Gaudiano, Brandon A; Forman, Evan M

    2013-12-01

    For the past 30 years, generations of scholars of cognitive behavior therapy (CBT) have expressed concern that clinical practice has abandoned the close links with theory that characterized the earliest days of the field. There is also a widespread assumption that a greater working knowledge of theory will lead to better clinical outcomes, although there is currently very little hard evidence to support this claim. We suggest that the rise of so-called "third generation" models of CBT over the past decade, along with the dissemination of statistical innovations among psychotherapy researchers, have given new life to this old issue. We argue that theory likely does matter to clinical outcomes, and we outline the future research that would be needed to address this conjecture.

  9. Models of the medical consultation: opportunities and limitations of a game theory perspective.

    PubMed

    Tarrant, C; Stokes, T; Colman, A M

    2004-12-01

    The medical consultation is best understood as a two-way social interaction involving interactive decision making. Game theory--a theory based on assumptions of rational choice and focusing on interactive decision making--has the potential to provide models of the consultation that can be used to generate empirically testable predictions about the factors that promote quality of care. Three different game structures--the Prisoner's Dilemma game, the Assurance game, and the Centipede game--all provide insights into the possible underlying dynamics of the doctor-patient interaction. Further empirical work is needed to uncover the underlying game structures that occur most commonly in medical consultations. Game theory has the potential to provide a new conceptual and theoretical basis for future empirical work on the interaction between doctors and their patients.

  10. What Makes Them Happy and Curious Online? An Empirical Study on High School Students' Internet Use from a Self-Determination Theory Perspective

    ERIC Educational Resources Information Center

    Zhao, Ling; Lu, Yaobin; Wang, Bin; Huang, Wayne

    2011-01-01

    From a self-determination theory perspective, this study tries to investigate how perceived autonomy support, perceived relatedness and competence affect high school students' intrinsic motivations (enjoyment and curiosity) to use the Internet, and the related outcomes of the motivation. Surveys are distributed to seven junior and ten senior high…

  11. Exploring Perspectives of Individuals with Intellectual Disabilities and Histories of Challenging Behaviors about Family Relationships: An Emergent Topic in a Grounded Theory Focus Group Study

    ERIC Educational Resources Information Center

    Brown, Julie F.; Hamilton-Mason, Johnnie; Maramaldi, Peter; Barnhill, L. Jarrett

    2016-01-01

    The perspectives of individuals with intellectual disabilities (ID) about family relationships are underrepresented in the literature. The topic of family relationships emerged in a grounded theory exploratory focus group study that involved thirty dually diagnosed participants with moderate or mild intellectual disabilities and histories of…

  12. Energy-momentum tensors in classical field theories — A modern perspective

    NASA Astrophysics Data System (ADS)

    Voicu, Nicoleta

    2016-04-01

    The paper presents a general geometric approach to energy-momentum tensors in Lagrangian field theories, based on a global Hilbert-type definition. The approach is consistent with the ones defining energy-momentum tensors in terms of hypermomentum maps given by the diffeomorphism invariance of the Lagrangian — and, in a sense, complementary to these, with the advantage of an increased simplicity of proofs and also, opening up new insights on the topic. A special attention is paid to the particular cases of metric and metric-affine theories.

  13. Sequential progressions in a theory-of-mind scale: longitudinal perspectives.

    PubMed

    Wellman, Henry M; Fang, Fuxi; Peterson, Candida C

    2011-01-01

    Consecutive retestings of 92 U.S. preschoolers (n=30), Chinese preschoolers (n=31), and deaf children (n=31) examined whether the sequences of development apparent in cross-sectional results with a theory-of-mind scale also appeared in longitudinal assessment. Longitudinal data confirmed that theory-of-mind progressions apparent in cross-sectional scaling data also characterized longitudinal sequences of understanding for individual children. The match between cross-sectional and longitudinal sequences appeared for children who exhibit different progressions across cultures (United States vs. China) and for children with substantial delays (deaf children of hearing parents). Moreover, greater scale distances reflected larger longitudinal age differences.

  14. Cooperating Teachers' Perspectives of Student Teaching Skills and Activities

    ERIC Educational Resources Information Center

    Smalley, Scott W.; Retallick, Michael S.; Paulsen, Thomas H.

    2015-01-01

    The purpose of this study was to determine the extent to which cooperating teachers deem required student teaching skills and activities relevant to the agricultural education student teaching experience. The population for this descriptive study consisted of individuals who served as cooperating teachers in Iowa and South Dakota during the last 5…

  15. Physical Activity Interventions for Adolescents: An Ecological Perspective

    ERIC Educational Resources Information Center

    Perry, Cynthia K.; Garside, Hailey; Morones, Sandra; Hayman, Laura L.

    2012-01-01

    Many factors contribute to the decline in physical activity (PA) observed during adolescence. We used an ecological framework to review 30 publications of PA interventions published between 1977 and 2009 targeting youth aged 12-18 years (19 PA interventions). We included studies that measured a primary outcome of PA and also examined intervening…

  16. Black Educational Activism for Community Empowerment: International Leadership Perspectives

    ERIC Educational Resources Information Center

    Wilson, Camille; Johnson, Lauri

    2015-01-01

    This article discusses themes emerging from studies of Black educational activism conducted in London, Toronto, and Detroit. An analysis of narrative data reveals that Black educational activists resist racism and other forms of oppression; act as border crossers and/or boundary spanners as they navigate complex community-based, institutional, and…

  17. Canada and the United States. Perspective. Learning Activity Packet.

    ERIC Educational Resources Information Center

    Maine Univ., Orono. New England - Atlantic Provinces - Quebec Center.

    The similarities and differences of Canada and the United States are explored in this Learning Activity Packet (LAP). Ten learning objectives are given which encourage students to examine: 1) the misconceptions Americans and Canadians have about each other and their ways of life; 2) the effect and influence of French and English exploration and…

  18. Physical Education and Physical Activity: A Historical Perspective

    ERIC Educational Resources Information Center

    Guedes, Claudia

    2007-01-01

    Although many recent studies have shown that the lack of physical activity is one of the major causes of obesity, diabetes, and cardiovascular disease among children and adolescents, few studies have shown the connection between the lack of physical education and the prevalence of a sedentary lifestyle. However, it is clear that physical education…

  19. Organizational Learning from the Perspective of Knowledge Maturing Activities

    ERIC Educational Resources Information Center

    Kaschig, A.; Maier, R.; Sandow, A.; Lazoi, M.; Schmidt, A.; Barnes, S.-A.; Bimrose, J.; Brown, A.; Bradley, C.; Kunzmann, C.; Mazarakis, A.

    2013-01-01

    The level of similarity of knowledge work across occupations and industries allows for the design of supportive information and communication technology (ICT) that can be widely used. In a previous ethnographically informed study, we identified activities that can be supported to increase knowledge maturing, conceptualized as goal-oriented…

  20. From the World-Systems Perspective to Institutional World History: Culture and Economy in Global Theory.

    ERIC Educational Resources Information Center

    Benton, Lauren

    1996-01-01

    Summarizes critical attacks on Immanuel Wallerstein's World Systems approach to history and offers new critical evaluations. Wallerstein argued that an emerging capitalist world economy dominated politics and history from the 16th century to the present. Defines two new approaches, institutional analysis and post colonial cultural theory, that…

  1. A Social Network Perspective on Teacher Collaboration in Schools: Theory, Methodology, and Applications

    ERIC Educational Resources Information Center

    Moolenaar, Nienke M.

    2012-01-01

    An emerging trend in educational research is the use of social network theory and methodology to understand how teacher collaboration can support or constrain teaching, learning, and educational change. This article provides a critical synthesis of educational literature on school social networks among educators to advance our understanding of the…

  2. Languaging and Visualisation Method for Grammar Teaching: A Conceptual Change Theory Perspective

    ERIC Educational Resources Information Center

    Rattya, Kaisu

    2013-01-01

    Conceptual grammatical knowledge is an area which causes problems at different levels of education. This article examines the ideas of conceptual change theory as a basis for establishing a new grammar teaching method. The research strategy which I use is educational design research and the research data have been collected from teacher students…

  3. Through the Lens of Theory: Perspectives on an International Library Association.

    ERIC Educational Resources Information Center

    Knuth, Rebecca

    1996-01-01

    Discusses a study of the International Association of School Librarianship (IASL) with the goal of offering an alternative model for studying associations that combines a theoretical framework with a case study design. Theories of organization, convergence, and global integrity ethics are discussed, and a survey of IASL membership is appended.…

  4. Faculty Involvement in Successful Institutional Accreditation: Perspectives through the Lens of Etzioni's Compliance Theory

    ERIC Educational Resources Information Center

    Diede, Nancy R.

    2009-01-01

    Scope and method of study. This is a qualitative study about faculty engagement with their college's and university's assessment programs viewed through Etzioni's Compliance theory. Findings and conclusions. All three educational institutions visited were perceived as using normative power when viewed in relation to assessment. Two of the…

  5. Predicting Social Support for Grieving Persons: A Theory of Planned Behavior Perspective

    ERIC Educational Resources Information Center

    Bath, Debra M.

    2009-01-01

    Research has consistently reported that social support from family, friends, and colleagues is an important factor in the bereaved person's ability to cope after the loss of a loved one. This study used a Theory of Planned Behavior framework to identify those factors that predict a person's intention to interact with, and support, a grieving…

  6. Parental Experiences of the "Time Together" Home Visiting Intervention: An Attachment Theory Perspective

    ERIC Educational Resources Information Center

    Butcher, Rebecca L.; Gersch, Irvine S.

    2014-01-01

    This paper reports the results of research into parental experiences of the Somerset (UK) "Time Together" home visiting intervention, with regards to its impact on the parent-child relationship. The research was carried out using an Attachment Theory lens in order to understand the qualitative experiences of seven parents of children in…

  7. Current Perspectives in Attachment Theory: Illustration from the Study of Maltreated Infants.

    ERIC Educational Resources Information Center

    Schneider-Rosen, Karen; And Others

    1985-01-01

    Compares maltreated and nonmaltreated infants and their caregivers with regard to security and quality of the attachment relationship over time. The finding that a greater proportion of maltreated infants in each of three age groups was insecurely attached is in accordance with the predictions based on Ainsworth's and Bowlby's attachment theory.…

  8. On the Nature of Applied Linguistics: Theory and Practice Relationships from a Critical Perspective

    ERIC Educational Resources Information Center

    Sánchez, William

    2007-01-01

    This article explores the relationships between Applied Linguistics and other related disciplines concerning language use and language teaching issues. It seeks to trace the changes in the view of the relationship between theory and practice in Applied Linguistics, to explain the reason for those changes, and to discuss the implications for…

  9. Understanding Intra-Response Class Covariation from the Matching Theory Perspective

    ERIC Educational Resources Information Center

    Shukla-Mehta, Smita; Albin, Richard W.

    2005-01-01

    The purpose of this study was to utilize the matching theory to understand intra-response class covariation as a result of extinction for selected members of the response class versus functional communication training. The participant was a 9-year old girl with a severe disability and problem behaviors. Experimental procedures included functional…

  10. Cognitive Structures of the Gifted: Theoretical Perspectives, Factor Analysis, Triarchic Theories of Intelligence, and Insight Issues.

    ERIC Educational Resources Information Center

    Shaughnessy, Michael F.

    1990-01-01

    The paper examines competing models for the thinking processes of gifted students, including the Piagetian model, the Triarchic theory of R. Sternberg, and the varieties of intelligence proposed by H. Gardner. The paper offers a meta-analysis and a six realm domain for the understanding of cognitive processing propensities in gifted students. (DB)

  11. Organizational Change at the Edge of Chaos: A Complexity Theory Perspective of Autopoietic Systems

    ERIC Educational Resources Information Center

    Susini, Domenico, III.

    2010-01-01

    This qualitative phenomenological study includes explorations of organizational change phenomena from the vantage point of complexity theory as experienced through the lived experiences of eight senior level managers and executives based in Northern N.J. who have experienced crisis situations in their organizations. Concepts from the natural…

  12. Predictors of Career Exploration Intentions: A Social Cognitive Career Theory Perspective

    ERIC Educational Resources Information Center

    Ochs, L. A.; Roessler, R. T.

    2004-01-01

    Failure of young people with disabilities to engage in career exploratory behavior contributes to their difficulties in transitioning into adult career roles. Social cognitive career theory's task performance model and career constructs were examined with 77 special education students diagnosed with learning disabilities and 99 general education…

  13. Intercultural Communication Theory: Current Perspectives. International and Intercultural Communication Annual, Volume VII.

    ERIC Educational Resources Information Center

    Gudykunst, William B., Ed.

    The seventh in a series dealing with intercultural communication, this volume is organized around the theme of theorizing in intercultural communication. Papers in the introductory section of the book discuss theory building, cultural assumptions of East and West, and an overview of theorizing in intercultural communication. The second section…

  14. Faculty Work Load Formulas in Nursing Education: A Critical Theory Perspective.

    ERIC Educational Resources Information Center

    Grams, Kathryn M.; Christ, Mary Ann

    1992-01-01

    The purpose of this article is to increase faculty awareness and understanding of the constraints and contradictions that are embedded within faculty work load formulas. An overview of critical social theory serves as a framework for the analysis of work load formulas within the context of their historical development and current usage. (Author)

  15. The Aesthetics of White Racism in Pre-Service Teacher Education: A Critical Race Theory Perspective

    ERIC Educational Resources Information Center

    Evans-Winters, Venus E.; Hoff, Pamela Twyman

    2011-01-01

    The authors use critical race theory (CRT) and critical race feminism (CRF) as a lens for analyzing and grappling with White students' resistance to learning about and deconstructing systems of oppression. The authors build on the work of critical scholars whose work exposes the ways in which White pre-service teachers resist counter-hegemonic…

  16. Parental Influences on the Academic Motivation of Gifted Students: A Self-Determination Theory Perspective

    ERIC Educational Resources Information Center

    Garn, Alex C.; Matthews, Michael S.; Jolly, Jennifer L.

    2010-01-01

    The home environment that parents provide their gifted children can have a significant impact on academic motivation, yet limited research has focused on this topic. Self-determination theory, a comprehensive framework of motivation, was used in the current study to explore two research questions: (a) What attitudes do parents of gifted students…

  17. Situational State Balances and Participation Motivation in Youth Sport: A Reversal Theory Perspective

    ERIC Educational Resources Information Center

    Sit, Cindy H. P.; Lindner, Koenraad J.

    2006-01-01

    Background: Reversal theory (Apter, 1982, 1989, ) is one of the motivational frameworks which attempts to examine human subjective experiences and behaviours. There are four dyads of metamotivational states (telic-paratelic, conformist-negativistic, autic-alloic, and mastery-sympathy) and individuals may prefer to be in one rather than the other…

  18. Students' Understanding of Loops and Nested Loops in Computer Programming: An APOS Theory Perspective

    ERIC Educational Resources Information Center

    Cetin, Ibrahim

    2015-01-01

    The purpose of this study is to explore students' understanding of loops and nested loops concepts. Sixty-three mechanical engineering students attending an introductory programming course participated in the study. APOS (Action, Process, Object, Schema) is a constructivist theory developed originally for mathematics education. This study is the…

  19. Distance Learning Success--A Perspective from Socio-Technical Systems Theory

    ERIC Educational Resources Information Center

    Wang, Jianfeng; Solan, David; Ghods, Abe

    2010-01-01

    With widespread adoption of computer-based distance education as a mission-critical component of the institution's educational program, the need for evaluation has emerged. In this research, we aim to expand on the systems approach by offering a model for evaluation based on socio-technical systems theory addressing a stated need in the literature…

  20. Constructing an Inquiry Orientation from a Learning Theory Perspective: Democratizing Access through Task Design

    ERIC Educational Resources Information Center

    Buell, Catherine A.; Greenstein, Steven; Wilstein, Zahava

    2017-01-01

    It is widely accepted in the mathematics education community that pedagogies oriented toward inquiry are aligned with a constructivist theory of learning, and that these pedagogies effectively support students' learning of mathematics. In order to promote such an orientation, we first separate the idea of inquiry from its conception as a…

  1. Appropriation from a Script Theory of Guidance Perspective: A Response to Pierre Tchounikine

    ERIC Educational Resources Information Center

    Stegmann, Karsten; Kollar, Ingo; Weinberger, Armin; Fischer, Frank

    2016-01-01

    In a recent paper, Pierre Tchounikine has suggested to advance the Script Theory of Guidance (SToG) by addressing the question how learners appropriate collaboration scripts presented to them in learning environments. Tchounikine's main criticism addresses SToG's "internal script configuration principle." This principle states that in…

  2. Antecedents of Emotions in Elite Athletes: A Cognitive Motivational Relational Theory Perspective

    ERIC Educational Resources Information Center

    Uphill, Mark A.; Jones, Marc V.

    2007-01-01

    Cognitive motivational relational theory suggests that cognitive appraisals or core relational themes (a composite summary of appraisal components) represent the proximal determinants of athletes' emotions. Semistructured interviews with 12 current international athletes (1 woman and 11 men) ages 19 to 37 years (M age = 27 years, SD = 6.03),…

  3. The Debate Begins: The Rise of Alternate Perspectives in Academic Advising Theory

    ERIC Educational Resources Information Center

    Burton, Shannon Lynn

    2016-01-01

    With the addition of history to the title of the Theory, Philosophy, and History of Advising Commission of NACADA: The Global Community for Academic Advising, the time has come to reflect on this growing commission as a means to track and record the growth and development of the theoretical debates and questions regarding the field of academic…

  4. A Social Role Theory Perspective on Gender Gaps in Political Attitudes

    ERIC Educational Resources Information Center

    Diekman, Amanda B.; Schneider, Monica C.

    2010-01-01

    Men and women tend to espouse different political attitudes, as widely noted by both journalists and social scientists. A deeper understanding of why and when gender gaps exist is necessary because at least some gender differences in the political realm are both pervasive and impactful. In this article, we apply a social role theory framework to…

  5. Motivation in Physical Education Classes: A Self-Determination Theory Perspective

    ERIC Educational Resources Information Center

    Ntoumanis, Nikos; Standage, Martyn

    2009-01-01

    This article presents a brief overview of empirical studies in school physical education (PE) that have employed self-determination theory (SDT) and, where relevant, proposes ideas for future research in this area. First, we review research on teachers' interpersonal style and its relation to students' motivation. Second, we discuss intervention…

  6. Autonomy, Competence, and Intrinsic Motivation in Science Education: A Self- Determination Theory Perspective

    ERIC Educational Resources Information Center

    Painter, Jason

    2011-01-01

    The purpose of this study was to examine a proposed motivational model of science achievement based on self-determination theory. The study relied on U.S. eighth-grade science data from the 2007 Third International Mathematics and Science Study to examine a structural model that hypothesized how perceived autonomy support, perceived competence in…

  7. National activities in remote sensing: a Canadian perspective

    NASA Astrophysics Data System (ADS)

    Howe, Bruce

    A brief review of the federal government's role in developing remote sensing activities in Canada over the years is given. The struggle to map a large country, together with an interest in space, brought about the Canadian remote sensing program. In particular, the paper focuses on the role of Energy, Mines and Resources Canada in coordinating research activities by all levels of government in remote sensing, thus fostering the growth of the remote sensing industry in Canada. An overview is given of the expanding remote sensing market. In addition, the paper looks at the present applications of remote sensing to agriculture, forestry and the study of ice caps and fresh water, for example, as well as its use in assessing and preventing environmental disasters. The paper concludes by stressing the importance of remote sensing in meeting the "Challenge of the 90's"—making sustainable development a way of life.

  8. The June 2009 Perspective on Canadian IYA2009 Activities

    NASA Astrophysics Data System (ADS)

    Hesser, James E.; Bartlett, C.; Breland, K.; Hay, K.; Lane, D.; Lacasse, R.; Lemay, D.; Langill, P.; Percy, J.; Welch, D. L.; Woodsworth, A.

    2009-05-01

    IYA effort in Canada is almost entirely a volunteer one relying heavily upon generous donations of time and effort by hundreds of people. Here we analyze accomplishments to date, and we describe activities to come in the remaining seven months of 2009 and well beyond. Accomplishments include provisions of hundreds of diverse opportunities for many thousands to experience their personal moment of astronomical discovery (their `Galileo Moment') a new planetarium show being presented at four major science centres; original works of music and performance that showcase astronomy in a captivating way for children and adults; an animated video narrated in English, French or Mi'kmaq of an Aboriginal story relating the seasons with circumpolar motions of stars; new educational and outreach materials aimed primarily at youth that are distributed freely at IYA events; theatre events; image exhibits; improved science education materials linked closely to curriculum requirements; and many more. In the months to come, all of the above will continue, but opportunities for new activities and partnerships continue to arise, e.g., Canada's Parks Day (18 July) emphasizes IYA, as do numerous cross-cultural events. We provide examples of the activities planned and/or being pursued for the latter portion of 2009 and beyond. These include issuance of a commemorative coin; delivery of a number of new education materials; prototyping of specific programs with Canadian Aboriginal communities in many provinces with the goal of creating multi-year partnerships to improve educational opportunities in their communities; and many more.

  9. Perspective on OECD activities from a non-member country.

    PubMed

    Alexandrova, Nevena; Atanassov, Atanas

    2006-01-01

    The OECD Blue Book, "Recombinant DNA: Safety Considerations" was published in 1986. The developed principles and concepts on the stepwise and case-by-case approach for risk assessment in the Blue Book have been used as a foundation for building national biosafety frameworks and international instruments for the regulation of the products of modern biotechnology. Twenty years after the Blue Book was published, OECD continues its activities on unique identifier systems, information-sharing, consensus documents for the biology of crops, trees and microorganisms with respect to harmonization of regulatory oversight and those of novel food and feed safety. These activities benefit, without any doubt, the international community at large, including OECD non-member countries. In order to strengthen its position in the international arena and to better respond to the needs of the changing world, OECD would be encouraged to participate in a more active manner in the technology transfer process and co-existence debate, together with continuing the organization's efforts on information-sharing and harmonization in the field of biotechnology and biosafety.

  10. A latent class growth analysis of school bullying and its social context: the self-determination theory perspective.

    PubMed

    Lam, Shui-fong; Law, Wilbert; Chan, Chi-Keung; Wong, Bernard P H; Zhang, Xiao

    2015-03-01

    The contribution of social context to school bullying was examined from the self-determination theory perspective in this longitudinal study of 536 adolescents from 3 secondary schools in Hong Kong. Latent class growth analysis of the student-reported data at 5 time points from grade 7 to grade 9 identified 4 groups of students: bullies (9.8%), victims (3.0%), bully-victims (9.4%), and typical students (77.8%). There was a significant association between academic tracking and group membership. Students from the school with the lowest academic performance had a greater chance of being victims and bully-victims. Longitudinal data showed that all 4 groups tended to report less victimization over the years. The victims and the typical students also had a tendency to report less bullying over the years, but this tendency was reversed for bullies and bully-victims. Perceived support from teachers for relatedness significantly predicted membership of the groups of bullies and victims. Students with higher perceived support for relatedness from their teachers had a significantly lower likelihood of being bullies or victims. The findings have implications for the theory and practice of preventive interventions in school bullying.

  11. Red- and blue-shifted hydrogen bonds: the Bent rule from quantum theory of atoms in molecules perspective.

    PubMed

    Grabowski, Sławomir J

    2011-11-17

    MP2/6-311++G(3pd,3df) calculations were performed on complexes of acetylene and fluoroform acting as the proton donating systems and different Lewis bases being the proton acceptors since these complexes are linked through C-H···Y hydrogen bonds. Quantum Theory of Atoms in Molecules (QTAIM) is applied to explain the nature of these interactions. The characteristics of bond critical points are presented for these complexes. The inter-relations between energetic and geometrical parameters as well as the parameters derived from the Natural Bond Orbital (NBO) theory are analyzed here. Red- and blue-shifted hydrogen bonds are detected for the complexes investigated and the differences between those interactions are analyzed from the QTAIM perspective. It is shown that such differences are in agreement with the Bent rule. The position of the bond critical point of the proton donating bond is connected with the nature of hydrogen bonding, that is, if it is blue- or red-shifted.

  12. [Shared Care Plan: convergence between the educational problematizing perspective and the theory of nursing cultural care].

    PubMed

    Martins, Paula Alvarenga de Figueiredo; Alvim, Neide Aparecida Titonelli

    2012-01-01

    This report is a reflection that marks a change of perspective in the care relation between nurse and client, in the implementation context of the educative process. It emerged a Shared Care Plan as an educational-caring proposal, in the convergence among theorists Paulo Freire and Leininger, regarding the dialogical pedagogy and nursing cultural care. With regard to the elements considered essential to the care, learning together allows the unveiling of a peculiar reality of possibilities for integration and transformation of the reality revealed, by choice of the person. Autonomy planned becomes real, so that customers no longer carry fragmented practices, stemming from traditional pedagogy. The stand-alone client reaches, then, the fullness of the action.

  13. Integrating different perspectives on socialization theory and research: a domain-specific approach.

    PubMed

    Grusec, Joan E; Davidov, Maayan

    2010-01-01

    There are several different theoretical and research approaches to the study of socialization, characterized by frequently competing basic tenets and apparently contradictory evidence. As a way of integrating approaches and understanding discrepancies, it is proposed that socialization processes be viewed from a domain perspective, with each domain characterized by a particular form of social interaction between the object and agent of socialization and by specific socialization mechanisms and outcomes. It is argued that this approach requires researchers to identify the domain of social interaction they are investigating, to understand that phenotypically similar behaviors may belong to different domains, and to acknowledge that caregivers who are effective in one type of interaction may not be effective in another.

  14. Virulence factor activity relationships (VFARs): a bioinformatics perspective.

    PubMed

    Waseem, Hassan; Williams, Maggie R; Stedtfeld, Tiffany; Chai, Benli; Stedtfeld, Robert D; Cole, James R; Tiedje, James M; Hashsham, Syed A

    2017-03-06

    Virulence factor activity relationships (VFARs) - a concept loosely based on quantitative structure-activity relationships (QSARs) for chemicals was proposed as a predictive tool for ranking risks due to microorganisms relevant to water safety. A rapid increase in sequencing capabilities and bioinformatics tools has significantly increased the potential for VFAR-based analyses. This review summarizes more than 20 bioinformatics databases and tools, developed over the last decade, along with their virulence and antimicrobial resistance prediction capabilities. With the number of bacterial whole genome sequences exceeding 241 000 and metagenomic analysis projects exceeding 13 000 and the ability to add additional genome sequences for few hundred dollars, it is evident that further development of VFARs is not limited by the availability of information at least at the genomic level. However, additional information related to co-occurrence, treatment response, modulation of virulence due to environmental and other factors, and economic impact must be gathered and incorporated in a manner that also addresses the associated uncertainties. Of the bioinformatics tools, a majority are either designed exclusively for virulence/resistance determination or equipped with a dedicated module. The remaining have the potential to be employed for evaluating virulence. This review focusing broadly on omics technologies and tools supports the notion that these tools are now sufficiently developed to allow the application of VFAR approaches combined with additional engineering and economic analyses to rank and prioritize organisms important to a given niche. Knowledge gaps do exist but can be filled with focused experimental and theoretical analyses that were unimaginable a decade ago. Further developments should consider the integration of the measurement of activity, risk, and uncertainty to improve the current capabilities.

  15. National water-information clearinghouse activities; ground-water perspective

    USGS Publications Warehouse

    Haupt, C.A.; Jensen, R.A.

    1988-01-01

    The US Geological Survey (USGS) has functioned for many years as an informal clearinghouse for water resources information, enabling users to access groundwater information effectively. Water resources clearinghouse activities of the USGS are conducted through several separate computerized water information programs that are involved in the collection, storage, retrieval, and distribution of different types of water information. The following USGS programs perform water information clearinghouse functions and provide the framework for a formalized National Water-Information Clearinghouse: (1) The National Water Data Exchange--a nationwide confederation of more than 300 Federal, State, local, government, academic, and private water-oriented organizations that work together to improve access to water data; (2) the Water Resources Scientific Information Center--acquires, abstracts, and indexes the major water-resources-related literature of the world, and provides this information to the water resources community; (3) the Information Transfer Program--develops innovative approaches to transfer information and technology developed within the USGS to audiences in the public and private sectors; (4) the Hydrologic Information Unit--provides responses to a variety of requests, both technical and lay-oriented, for water resources information , and helps efforts to conduct water resources research; (5) the Water Data Storage and Retrieval System--maintains accessible computerized files of hydrologic data collected nationwide, by the USGS and other governmental agencies, from stream gaging stations, groundwater observation wells, and surface- and groundwater quality sampling sites; (6) the Office of Water Data Coordination--coordinate the water data acquisition activities of all agencies of the Federal Government, and is responsible for the planning, design, and inter-agency coordination of a national water data and information network; and (7) the Water Resources Research

  16. Perspective of surface active agents in baking industry: an overview.

    PubMed

    Ahmad, Asif; Arshad, Nazish; Ahmed, Zaheer; Bhatti, Muhammad Shahbaz; Zahoor, Tahir; Anjum, Nomana; Ahmad, Hajra; Afreen, Asma

    2014-01-01

    Different researchers have previously used surfactants for improving bread qualities and revealed that these compounds result in improving the quality of dough and bread by influencing dough strength, tolerance, uniform crumb cell size, and improve slicing characteristics and gas retention. The objective of this review is to highlight the areas where surfactants are most widely used particularly in the bread industries, their role and mechanism of interaction and their contribution to the quality characteristics of the dough and bread. This review reveals some aspects of surface-active agents regarding its role physiochemical properties of dough that in turn affect the bread characteristics by improving its sensory quality and storage stability.

  17. Online Asynchronous Threaded Discussions: Good Enough to Advance Students through the Proximal Zone of Activity Theory?

    ERIC Educational Resources Information Center

    Maurino, Paula San Millan

    2007-01-01

    This paper presents a study which involved researching student interaction and participation under the lens of Activity Theory and Social Computing. Activity Theory is a philosophical framework that integrates the objective, the sociocultural, and the ecological, while Social Computing describes any type of computing application in which software…

  18. Divisions of Labour: Activity Theory, Multi-Professional Working and Intervention Research

    ERIC Educational Resources Information Center

    Warmington, Paul

    2011-01-01

    This article draws upon, but also critiques, activity theory by combining analysis of how an activity theory derived research intervention attempted to address both everyday work practices and organisational power relationships among children's services professionals. It offers two case studies of developmental work research (DWR) interventions in…

  19. Modulation of brain activity during action observation: influence of perspective, transitivity and meaningfulness.

    PubMed

    Hétu, Sébastien; Mercier, Catherine; Eugène, Fanny; Michon, Pierre-Emmanuel; Jackson, Philip L

    2011-01-01

    The coupling process between observed and performed actions is thought to be performed by a fronto-parietal perception-action system including regions of the inferior frontal gyrus and the inferior parietal lobule. When investigating the influence of the movements' characteristics on this process, most research on action observation has focused on only one particular variable even though the type of movements we observe can vary on several levels. By manipulating the visual perspective, transitivity and meaningfulness of observed movements in a functional magnetic resonance imaging study we aimed at investigating how the type of movements and the visual perspective can modulate brain activity during action observation in healthy individuals. Importantly, we used an active observation task where participants had to subsequently execute or imagine the observed movements. Our results show that the fronto-parietal regions of the perception action system were mostly recruited during the observation of meaningless actions while visual perspective had little influence on the activity within the perception-action system. Simultaneous investigation of several sources of modulation during active action observation is probably an approach that could lead to a greater ecological comprehension of this important sensorimotor process.

  20. Come and Knock on Our Door: Offenders' Perspectives on Home Visits Through Ecological Theory.

    PubMed

    Patten, Ryan; La Rue, Emily; Caudill, Jonathan W; Thomas, Matthew O; Messer, Sarah

    2016-06-05

    The use of home visits has a long and storied history in the United States from different disciplines, such as nursing, prenatal mothers, young families, health promotion, and community corrections. Ecological theory explains how formal actors play a role in the promotion in the health field through home visits, but does not address community corrections home visits. Through the use of 30 semi-structured interviews, this research seeks to expand the understanding of ecological theory by capturing the perceptions of offenders sentenced to home visits conducted by a sheriff's office. The findings suggest the participants supported the home visits by formal agents and, in general, the home visits created an atmosphere of respect between the participants and sheriff's office personnel. This study creates the context for future research to understand the role of formal agents in recidivism and evaluate the efficacy of home visits by community corrections agencies.

  1. Modified Uncertainty Theory and Parents’ Perspectives about Equivocal Diagnostic Results for Cystic Fibrosis

    PubMed Central

    Tluczek, Audrey; McKechnie, Anne Chevalier; Lynam, Patrice A.

    2010-01-01

    A grounded, dimensional analysis described the experiences of five couples whose infants had equivocal diagnostic test results following positive genetic newborn screens for cystic fibrosis. We analyzed interview data collected at two times during each infant’s first year. Uncertainty emerged as the central thematic dimension. Results showed that parents passed through a series of stages similar to the process described by Mishel’s Uncertainty in Illness Theory (UIT), thus extending the application of the theory to circumstances in which the very presence of an illness is uncertain. Findings informed a modified version of the UIT comprised of five domains: stimuli frame, degree of uncertainty, opportunity-danger continuum, affective responses, and coping. This model incorporated Morse’s conception of suffering. Three contextual domains influenced parents’ experiences at various junctures along the uncertainty trajectory: individual characteristics, structure providers, and time. We discussed implications of the model for future research and clinical practice relative to genetic testing. PMID:20065305

  2. [Systematized care in cardiac preoperative: theory of human caring in the perspective of nurses and users].

    PubMed

    Amorim, Thais Vasconselos; Arreguy-Sena, Cristina; Alves, Marcelo da Silva; Salimena, Anna Maria de Oliveira

    2014-01-01

    This is a case study research that aimed to know, with the adoption of the Theory of Human Caring, the meanings of therapeutic interpersonal relationship between nurse and user on the preoperative nursing visit after the experience of the surgical process. The convenience sample was composed of three nurses and three users of an institution that has updated records to perform highly complex cardiovascular surgery, comprising nine combinations of therapeutic interactions. It was used instruments, structured according to the theory of Jean Watson and North American Nursing Diagnosis Association, Nursing Intervention Classification and Nursing Outcomes Classification taxonomies. The legal and ethical aspects of research involving human subjects were assured. The results revealed three clusters to grasp the significance of preoperative visits by users and five clusters to capture the perception of nurses when they experience this clinical experience.

  3. Deliquescence and efflorescence of small particles: Unifying perspectives from nucleation theory

    SciTech Connect

    McGraw,R.; Lewis, E.

    2009-02-23

    We examine size dependent deliquescence/efflorescence phase transformation for particles down to several nanometers in size. A thin layer criterion (TLC) is introduced to define a deliquescence relative humidity (DRH) for small particles. The usual bulk deliquescence conditions are recovered in the limit of large dry particle size. Nano-size particles are shown to deliquesce to metastable states via a nucleation process at relative humidity just below the DRH. The nucleation barrier is located at a critical solution layer thickness and vanishes at the DRH defined by the TLC. Methods from nucleation theory form the basis for the analysis and yield new insights into the theory, facilitate the interpretation of measurements, and point to unification of deliquescence and efflorescence processes for particles in the nano regime. Methods include thermodynamic area constructions, Legendre transforms relating the binary free-energy surfaces for deliquescence and efflorescence processes, and application of nucleation theorems.

  4. Gender and family differences in adolescent's heavy alcohol use: the power-control theory perspective.

    PubMed

    Okulicz-Kozaryn, K

    2010-10-01

    According to the power-control theory, growing independence of adolescent girls, manifest in more prevalent problem behaviors, may be explained by changes in family structure (increasing level of authority gained in the workplace by mothers). To verify this hypothesis, self-report data from Warsaw adolescents (N = 3087, age 14-15 years, 50% boys) were used. Results indicate that parenting practices differ across child gender and structure of parents' work authority. Girls, especially in patriarchal households, spend more time with mothers and perceive stronger maternal control. In egalitarian families, fathers tend to be more involved with sons than with daughters. When parental control, support and adolescents' risk preferences are controlled, the gender-by-household type interaction effect is observed--girls in patriarchal families have the lowest risk of getting drunk. Study results provide support for power-control theory showing the relationship between parental work authority and adolescent's heavy alcohol use.

  5. Assessment of collaboration in U.S. health care delivery: a perspective from systems theory.

    PubMed

    McCovery, Jarred; Matusitz, Jonathan

    2014-01-01

    This analysis applies the core principles of systems theory to health care delivery in the United States. Particularly examined is the role of collaboration between health care agencies/organizations in the United States. This includes cooperation and teamwork among health professionals (i.e., nurses, technicians, physicians, and laboratory staff). By and large, systems theory posits that (a) all singular units within a system are interconnected and (b) the whole is more than the sum of its parts. This analysis identifies areas within the U.S. public health system where it is essential to embody elements of cooperation and collaboration, not only to bolster physical and financial support, but also to ensure a substantial impact within the community.

  6. Exploring security and privacy issues in hospital information system: an Information Boundary Theory perspective.

    PubMed

    Zakaria, Nasriah; Stanton, Jeffrey; Stam, Kathryn

    2003-01-01

    A small community hospital (67 beds) in Central New York was undergoing a major technological change within the organization, as they move from the use of several legacy information systems to a hospital-wide information system. The focus of the present research is to explore the privacy and security information issues using a framework called Information Boundary Theory [Stanton, 2002]. IBT explains the motivational factors that lead to the revelation or disclosing of information.

  7. Health region development from the perspective of system theory - an empirical cross-regional case study.

    PubMed

    Volgger, Michael; Mainil, Tomas; Pechlaner, Harald; Mitas, Ondrej

    2015-01-01

    Governments are increasingly establishing health regions to deal with current challenges of public health service. These regions are seen as instruments to balance public and private stakeholders, and offer health care to regional citizens as well as to medical/health tourists. However, it is still unclear how the development of such health regions as well as their governance may be conceptualized. We apply Luhmann's system theory approach in the context of a cross-regional case study that compares health region developments in the Autonomous Province of Bolzano-South Tyrol (Italy) with particular regard to the Eastern Dolomites and in the province of Zeeland (the Netherlands). We suggest that Luhmann's system theory provides a useful set of criteria to evaluate and judge health region development. Fully developed health regions can be understood as auto-poietic systems. By emphasizing programs, personnel, and communication channels, these case studies illustrate the suitability of the system theory toolset to analyze the governance and spatial embeddedness of health regions. Additionally, the study contributes to literature by indicating that health regions are closely related to identity issues and to decision making in regions.

  8. Origin of molecular conformational stability: perspectives from molecular orbital interactions and density functional reactivity theory.

    PubMed

    Liu, Shubin; Schauer, Cynthia K

    2015-02-07

    To have a quantitative understanding about the origin of conformation stability for molecular systems is still an unaccomplished task. Frontier orbital interactions from molecular orbital theory and energy partition schemes from density functional reactivity theory are the two approaches available in the literature that can be used for this purpose. In this work, we compare the performance of these approaches for a total of 48 simple molecules. We also conduct studies to flexibly bend bond angles for water, carbon dioxide, borane, and ammonia molecules to obtain energy profiles for these systems over a wide range of conformations. We find that results from molecular orbital interactions using frontier occupied orbitals such as the highest occupied molecular orbital and its neighbors are only qualitatively, at most semi-qualitatively, trustworthy. To obtain quantitative insights into relative stability of different conformations, the energy partition approach from density functional reactivity theory is much more reliable. We also find that the electrostatic interaction is the dominant descriptor for conformational stability, and steric and quantum effects are smaller in contribution but their contributions are indispensable. Stable molecular conformations prefer to have a strong electrostatic interaction, small molecular size, and large exchange-correlation effect. This work should shed new light towards establishing a general theoretical framework for molecular stability.

  9. Adolescents' perspectives on the barriers and facilitators of physical activity: a systematic review of qualitative studies.

    PubMed

    Martins, João; Marques, Adilson; Sarmento, Hugo; Carreiro da Costa, Francisco

    2015-10-01

    This article examined qualitative studies of adolescents' perspectives about the facilitators and barriers of physical activity, published from 2007 to 2014. A systematic review of 'Web of Science', 'EBSCO', 'Psychinfo' and 'ERIC' databases was performed according to Preferred Reporting Items for Systematic reviews and Meta-analyses guidelines. The following keywords were used: 'physical activity' and 'physical education', each one individually associated with 'correlate', 'determinant', 'facilitator', 'barrier', 'factor influen*', and with 'qualitative', 'focus group', 'interview', "narrative'. Out of 3815 studies initially identified, due to inclusion and quality criteria, only 12 were fully reviewed. Studies' outcomes were analyzed through thematic analysis. The majority of these reported research with young adolescent girls. Few studies have considered the socioeconomic status influence. According to young people's perspectives, the main facilitators and hampering factors to their participation in physical activity were the following: attitude toward physical activity; motivation; perceptions of competence and body image; fun; influence of friends, family and physical education teachers and environmental physical activity opportunities. Specific life transition periods were referred only as a barrier to physical activity. Strategies of pedagogical actions and for developing physical activity intervention programs were discussed, in order to effectively promote the adoption of active lifestyles among youth.

  10. The Mutual Relationship Between Immigrants' Disrupted Everyday Activities and Their Health: A Grounded Theory of Experiences of Korean Immigrants Settling in New Zealand.

    PubMed

    Kim, Hagyun; Hocking, Clare

    2016-01-01

    For Asian immigrants, immigration has the potential to disrupt all familiar routines. That is a threat to their health and well-being. This grounded theory study explored how immigrants adjust to a new environment by analyzing the experiences of 25 Korean immigrants in New Zealand. The findings suggest that immigration is a stress-inducing phenomenon that requires adjustment of valued activities and adversely affects their health. In response, participants worked on regaining control over disrupted activities by opting for two world perspectives. The study helps social workers to develop effective interventions and services for immigrants to better handle health problems.

  11. INCORPORATING ROUTINE ACTIVITIES, ACTIVITY SPACES, AND SITUATIONAL DEFINITIONS INTO THE SOCIAL SCHEMATIC THEORY OF CRIME*

    PubMed Central

    BARR, ASHLEY B.; LEI, MAN-KIT; STEWART, ERIC

    2014-01-01

    Simons and Burt’s (2011) social schematic theory (SST) of crime posits that adverse social factors are associated with offending because they promote a set of social schemas (i.e., a criminogenic knowledge structure) that elevates the probability of situational definitions favorable to crime. This study extends the SST model by incorporating the role of contexts for action. Furthermore, the study advances tests of the SST by incorporating a measure of criminogenic situational definitions to assess whether such definitions mediate the effects of schemas and contexts on crime. Structural equation models using 10 years of panel data from 582 African American youth provided strong support for the expanded theory. The results suggest that childhood and adolescent social adversity fosters a criminogenic knowledge structure as well as selection into criminogenic activity spaces and risky activities, all of which increase the likelihood of offending largely through situational definitions. Additionally, evidence shows that the criminogenic knowledge structure interacts with settings to amplify the likelihood of situational definitions favorable to crime. PMID:26392633

  12. Can Inner Experience Be Apprehended in High Fidelity? Examining Brain Activation and Experience from Multiple Perspectives

    PubMed Central

    Hurlburt, Russell T.; Alderson-Day, Ben; Fernyhough, Charles; Kühn, Simone

    2017-01-01

    We discuss the historical context for explorations of “pristine inner experience,” attempts to apprehend and describe the inner experiences that directly present themselves in natural environments. There is no generally accepted method for determining whether such apprehensions/descriptions should be considered high fidelity. By analogy from musical recording, we present and discuss one strategy for establishing experiential fidelity: the examining of brain activation associated with a variety of experiential perspectives that had not been specified at the time of data collection. We beeped participants in an fMRI scanner at randomly-determined times and recorded time-locked brain activations. We used Descriptive Experience Sampling (DES) to apprehend and describe the participant's experience that was ongoing at each beep. These apprehensions/descriptions were obtained with no specific theoretical perspective or experimental intention when originally collected. If these apprehensions/descriptions were of high fidelity, then these pairings of moments of experience and brain activations should be able to be productively examined and re-examined in multiple ways and from multiple theoretical perspectives. We discuss a small set of such re-examinations and conclude that this strategy is worthy of further examination. PMID:28191000

  13. Red-Shifting versus Blue-Shifting Hydrogen Bonds: Perspective from Ab Initio Valence Bond Theory.

    PubMed

    Chang, Xin; Zhang, Yang; Weng, Xinzhen; Su, Peifeng; Wu, Wei; Mo, Yirong

    2016-05-05

    Both proper, red-shifting and improper, blue-shifting hydrogen bonds have been well-recognized with enormous experimental and computational studies. The current consensus is that there is no difference in nature between these two kinds of hydrogen bonds, where the electrostatic interaction dominates. Since most if not all the computational studies are based on molecular orbital theory, it would be interesting to gain insight into the hydrogen bonds with modern valence bond (VB) theory. In this work, we performed ab initio VBSCF computations on a series of hydrogen-bonding systems, where the sole hydrogen bond donor CF3H interacts with ten hydrogen bond acceptors Y (═NH2CH3, NH3, NH2Cl, OH(-), H2O, CH3OH, (CH3)2O, F(-), HF, or CH3F). This series includes four red-shifting and six blue-shifting hydrogen bonds. Consistent with existing findings in literature, VB-based energy decomposition analyses show that electrostatic interaction plays the dominating role and polarization plays the secondary role in all these hydrogen-bonding systems, and the charge transfer interaction, which denotes the hyperconjugation effect, contributes only slightly to the total interaction energy. As VB theory describes any real chemical bond in terms of pure covalent and ionic structures, our fragment interaction analysis reveals that with the approaching of a hydrogen bond acceptor Y, the covalent state of the F3C-H bond tends to blue-shift, due to the strong repulsion between the hydrogen atom and Y. In contrast, the ionic state F3C(-) H(+) leads to the red-shifting of the C-H vibrational frequency, owing to the attraction between the proton and Y. Thus, the relative weights of the covalent and ionic structures essentially determine the direction of frequency change. Indeed, we find the correlation between the structural weights and vibrational frequency changes.

  14. Beyond Positivism: Understanding and addressing childhood obesity disparities through a Critical Theory perspective

    PubMed Central

    Schroeder, Krista; Kulage, Kristine M.; Lucero, Robert

    2016-01-01

    Purpose We apply Critical Theory to examine menu labeling with the aim of uncovering important implications for nursing practice, research, and policy. Conclusions Our critical analysis uncovers barriers to menu labeling's effectiveness, particularly for vulnerable populations. Nurses must work to minimize the impact of these barriers and optimize the effectiveness of menu labeling, in order to strengthen the fight against obesity. Practice implications We suggest changes, guided by this critical analysis,that can be implemented by nurses working in clinical practice, research, and policy. PMID:26112774

  15. Semantic modeling for theory clarification: The realist vs liberal international relations perspective

    SciTech Connect

    Bray, O.H. |

    1994-04-01

    This paper describes a natural language based, semantic information modeling methodology and explores its use and value in clarifying and comparing political science theories and frameworks. As an example, the paper uses this methodology to clarify and compare some of the basic concepts and relationships in the realist (e.g. Waltz) and the liberal (e.g. Rosenau) paradigms for international relations. The methodology can provide three types of benefits: (1) it can clarify and make explicit exactly what is meant by a concept; (2) it can often identify unanticipated implications and consequence of concepts and relationships; and (3) it can help in identifying and operationalizing testable hypotheses.

  16. Active Learning with Monty Hall in a Game Theory Class

    ERIC Educational Resources Information Center

    Brokaw, Alan J.; Merz, Thomas E.

    2004-01-01

    The authors describe a game that students can play on the first day of a game theory class. The game introduces the 4 essential elements of any game and is designed so that its sequel, also played on the first day of class, has students playing the well-known Monty Hall game, which raises the question: Should you switch doors? By implementing a…

  17. Do Differences in Brain Activation Challenge Universal Theories of Dyslexia?

    ERIC Educational Resources Information Center

    Ziegler, Johannes C.

    2006-01-01

    It has been commonly agreed that developmental dyslexia in different languages has a common biological origin: a dysfunction of left posterior temporal brain regions dealing with phonological processes. Siok, Perfetti, Jin, and Tan (2004, "Nature," 431, 71-76) challenge this biological unity theory of dyslexia: Chinese dyslexics show no deficits…

  18. An Understanding of Language Development Models--Pidginization from the Perspective of Chaos Theory

    ERIC Educational Resources Information Center

    Zhao, Guodong

    2010-01-01

    With the accelerated globalization, domestic and international communications become more frequent than ever before. As the major media of international communication, languages contact with each other more actively by day. And in the active contact any language would gradually develop and change. Pidgin language is a unique linguistic phenomenon…

  19. Epidemiology and the bio-statistical theory of disease: a challenging perspective.

    PubMed

    Giroux, Élodie

    2015-06-01

    Christopher Boorse's bio-statistical theory (BST) of health and disease argues that the central discipline on which theoretical medicine relies is physiology. His theory has been much discussed but little has been said about its focus on physiology or, conversely, about the role that other biomedical disciplines may play in establishing a theoretical concept of health. Since at least the 1950s, epidemiology has gained in strength and legitimacy as an independent medical science that contributes to our knowledge of health and disease. Indeed, it not only provides important information about disease distribution and aetiology, but the risk-factor approach it employs seems to challenge BST's binary conception of health and disease. The objective of the article is to show, firstly, how important information deriving from descriptive and analytical epidemiology forms part of our contemporary medical concepts of health and disease, and secondly, that these elements are not taken into account by BST in a satisfactory way. The article's central contention, therefore, is that if the project of defining the theoretical concept of health is to be maintained, more importance should be accorded to the contribution made by epidemiology--alongside physiology--in defining health.

  20. Toward Large-Scale Continuous EDA: A Random Matrix Theory Perspective.

    PubMed

    Kabán, A; Bootkrajang, J; Durrant, R J

    2016-01-01

    Estimations of distribution algorithms (EDAs) are a major branch of evolutionary algorithms (EA) with some unique advantages in principle. They are able to take advantage of correlation structure to drive the search more efficiently, and they are able to provide insights about the structure of the search space. However, model building in high dimensions is extremely challenging, and as a result existing EDAs may become less attractive in large-scale problems because of the associated large computational requirements. Large-scale continuous global optimisation is key to many modern-day real-world problems. Scaling up EAs to large-scale problems has become one of the biggest challenges of the field. This paper pins down some fundamental roots of the problem and makes a start at developing a new and generic framework to yield effective and efficient EDA-type algorithms for large-scale continuous global optimisation problems. Our concept is to introduce an ensemble of random projections to low dimensions of the set of fittest search points as a basis for developing a new and generic divide-and-conquer methodology. Our ideas are rooted in the theory of random projections developed in theoretical computer science, and in developing and analysing our framework we exploit some recent results in nonasymptotic random matrix theory.

  1. Application of environmental sensitivity theories in personalized prevention for youth substance abuse: a transdisciplinary translational perspective.

    PubMed

    Thibodeau, Eric L; August, Gerald J; Cicchetti, Dante; Symons, Frank J

    2016-03-01

    Preventive interventions that target high-risk youth, via one-size-fits-all approaches, have demonstrated modest effects in reducing rates of substance use. Recently, substance use researchers have recommended personalized intervention strategies. Central to these approaches is matching preventatives to characteristics of an individual that have been shown to predict outcomes. One compelling body of literature on person × environment interactions is that of environmental sensitivity theories, including differential susceptibility theory and vantage sensitivity. Recent experimental evidence has demonstrated that environmental sensitivity (ES) factors moderate substance abuse outcomes. We propose that ES factors may augment current personalization strategies such as matching based on risk factors/severity of problem behaviors (risk severity (RS)). Specifically, individuals most sensitive to environmental influence may be those most responsive to intervention in general and thus need only a brief-type or lower-intensity program to show gains, while those least sensitive may require more comprehensive or intensive programming for optimal responsiveness. We provide an example from ongoing research to illustrate how ES factors can be incorporated into prevention trials aimed at high-risk adolescents.

  2. Are galaxy distributions scale invariant? A perspective from dynamical systems theory

    NASA Astrophysics Data System (ADS)

    McCauley, J. L.

    2002-06-01

    Unless there is an evidence for fractal scaling with a single exponent over distances 0.1<=r<=100h-1Mpc, then the widely accepted notion of scale invariance of the correlation integral for 0.1<=r<=10h-1Mpc must be questioned. The attempt to extract a scaling exponent /ν from the correlation integral /n(r) by plotting /log(n(r)) vs. /log(r) is unreliable unless the underlying point set is approximately monofractal. The extraction of a spectrum of generalized dimensions νq from a plot of the correlation integral generating function Gn(q) by a similar procedure is probably an indication that Gn(q) does not scale at all. We explain these assertions after defining the term multifractal, mutually inconsistent definitions having been confused together in the cosmology literature. Part of this confusion is traced to the confusion in interpreting a measure-theoretic formula written down by Hentschel and Procaccia in the dynamical systems theory literature, while other errors follow from confusing together entirely different definitions of multifractal from two different schools of thought. Most important are serious errors in data analysis that follow from taking for granted a largest term approximation that is inevitably advertised in the literature on both fractals and dynamical systems theory.

  3. Theory of mind: a new perspective on the puzzle of belief ascription.

    PubMed

    Airenti, Gabriella

    2015-01-01

    The concept of theory of mind (ToM) has considerably changed since its first proposal. The aim of first human studies was to understand how young children acquire the representation of others' mental states, in particular beliefs, and how they distinguish them from their own and from reality. The False Belief Task was designed to prove the acquisition of this capacity. According to children's performance in this test the acquisition of ToM has been attested at around 4 years of age. In last years it has been shown that using spontaneous response tasks also 15-month-old-children could attribute to an agent a false belief about the location of an object. These results have generated the puzzle of belief-ascription: Why do 3-year-old children fail the classical false belief tasks whereas much younger children show the correct expectation in the spontaneous response tasks? In this paper I shall argue that (i) infants and young children, when confronted with the two forms of false belief tasks do not face the same problem and (ii) behind the two testing situations there are different ways to understand theory of mind. I shall propose that what appears in infants is the natural human disposition to intersubjectivity.

  4. Optimal design of resonant piezoelectric buzzer from a perspective of vibration-absorber theory.

    PubMed

    Bai, Mingsian R; Chen, Rong-Liang; Chuang, Chung-Yuan; Yu, Cheng-Sheng; Hsieh, Huey-Lin

    2007-09-01

    In this paper, an optimization technique is presented for the design of piezoelectric buzzers. This design technique aims at finding the optimal configuration of the coupled cavity and diaphragm structure to maximize the sound pressure output. Instead of measuring the material constants of the piezoelectric ceramic and the metal diaphragm, an "added-mass method" is developed to estimate the equivalent electromechanical parameters of the system on which an analogous circuit can be established. The electrical impedance and on-axis sound pressure level of the piezoelectric buzzer can be simulated by solving the loop equations of the electromechanoacoustical analogous circuit. An interesting finding of this research is that the nature of the piezoelectric buzzer bears remarkable resemblance to that in the dynamic vibration absorber theory. Much physical insight can be gained by exploiting this resemblance in search of the optimal configuration. According to the system characteristic equation, a design chart was devised to "lock" the critical frequency at which the system delivers the maximal output. On the basis of the analogous circuit and the vibration absorber theory, an optimal design was found with constrained optimization formalism. Experiments were conducted to justify the optimal design. The results showed that the performance was significantly improved using the optimal design over the original design. Design guidelines for the piezoelectric buzzers are summarized.

  5. A perspective on nutrition communication in developing countries: from theory to practice.

    PubMed

    Smitasiri, Suttilak

    2003-01-01

    Though nutrition communities are still far from understanding how to bring science to bear in formulating effective policies and programs, the contributions of nutrition science have provided recommendations leading to ways and means to improve nutrition in developing countries. To transfer these recommendations into successful implementation, effective nutrition communication has played an important role in the development. Nevertheless, its success has been limited due to several factors including the fact that there is likely only a small proportion of professionals who consistently aim to use theory as a tool to guide action. This paper highlights the importance of using theoretical frameworks to guide the design and implementation. Based on Thailand's experience, social cognitive theory and social marketing are suggested for further applications in developing country context. It is proposed that the role of researchers/practitioners should be formed to facilitate nutrition implementation. Issues relating to the creation of supportive structures and environments i.e. quality personnel, capacity building, proper status and reasonable budgets, are also identified.

  6. Using Activity Theory to Understand Learning Design Requirements of Patient Self-Management Environments

    ERIC Educational Resources Information Center

    Schaffer, Scott P.; Reyes, Lisette; Kim, Hannah; Collins, Bart

    2010-01-01

    Learning designs aimed at supporting transformational change could significantly benefit from the adoption of socio-historical and socio-cultural analysis approaches. Such systemic perspectives are gaining more importance in education as they facilitate understanding of complex interactions between learning environments and human activity. The…

  7. Investigating Agile User-Centered Design in Practice: A Grounded Theory Perspective

    NASA Astrophysics Data System (ADS)

    Hussain, Zahid; Slany, Wolfgang; Holzinger, Andreas

    This paper investigates how the integration of agile methods and User-Centered Design (UCD) is carried out in practice. For this study, we have applied grounded theory as a suitable qualitative approach to determine what is happening in actual practice. The data was collected by semi-structured interviews with professionals who have already worked with an integrated agile UCD methodology. Further data was collected by observing these professionals in their working context, and by studying their documents, where possible. The emerging themes that the study found show that there is an increasing realization of the importance of usability in software development among agile team members. The requirements are emerging; and both low and high fidelity prototypes based usability tests are highly used in agile teams. There is an appreciation of each other's work from both UCD professionals and developers and both sides can learn from each other.

  8. The relation between majorization theory and quantum information from entanglement monotones perspective

    NASA Astrophysics Data System (ADS)

    Erol, V.

    2016-04-01

    Entanglement has been studied extensively for understanding the mysteries of non-classical correlations between quantum systems. In the bipartite case, there are well known monotones for quantifying entanglement such as concurrence, relative entropy of entanglement (REE) and negativity, which cannot be increased via local operations. The study on these monotones has been a hot topic in quantum information [1-7] in order to understand the role of entanglement in this discipline. It can be observed that from any arbitrary quantum pure state a mixed state can obtained. A natural generalization of this observation would be to consider local operations classical communication (LOCC) transformations between general pure states of two parties. Although this question is a little more difficult, a complete solution has been developed using the mathematical framework of the majorization theory [8]. In this work, we analyze the relation between entanglement monotones concurrence and negativity with respect to majorization for general two-level quantum systems of two particles.

  9. Stroop-like effects in a new-code learning task: A cognitive load theory perspective.

    PubMed

    Hazan-Liran, Batel; Miller, Paul

    2017-09-01

    To determine whether and how learning is biased by competing task-irrelevant information that creates extraneous cognitive load, we assessed the efficiency of university students with a learning paradigm in two experiments. The paradigm asked participants to learn associations between eight words and eight digits. We manipulated congruity of the digits' ink colour with the words' semantics. In Experiment 1 word stimuli were colour words (e.g., blue, yellow) and in Experiment 2 colour-related word concepts (e.g., sky, banana). Marked benefits and costs on learning due to variation in extraneous cognitive load originating from processing task-irrelevant information were evident. Implications for cognitive load theory and schooling are discussed.

  10. Control of a Flexible Space Antenna: A Finite Dimensional Perspective Based on Distributed Parameter Theory

    NASA Technical Reports Server (NTRS)

    Mingori, D. L.; Gibson, J. S.; Blelloch, P.; Adamian, A.

    1985-01-01

    The methods presented are based on results from infinite dimensional control theory, but they can be described and used in a finite dimensional context. This blend leads to an approach which employs powerful ideas on convergence, and is also quite practical for systems of realistic complexity. Appropriate reduced order models are generated simultaneously with the development of the compensator. The required models change as a function of changes in the performance demanded, sensor and actuator location, inherent damping, disturbances, etc. Thus they are driven by the control and estimation problems at hand. The compensators which emerge are very close to the ideal compensators which would be obtained with a very large order model. However, some simplification is frequently possible. The method of balanced realizations was found to be effective for this purpose.

  11. Parents as health promoters: a theory of planned behavior perspective on the prevention of childhood obesity.

    PubMed

    Andrews, Kyle R; Silk, Kami S; Eneli, Ihuoma U

    2010-01-01

    Childhood obesity is a significant problem in the United States. A number of communication campaigns and interventions have been conducted to combat the problem, with parents being recognized as an important target audience. A critical aspect of involving parents in such campaigns is formative research on parents' perceptions of their role in preventing childhood obesity. To facilitate this process, a study was conducted in which parents (N = 201) responded to Theory of Planned Behavior (TPB) survey items as they relate to providing healthy foods and limiting unhealthy foods for their children. Results indicated support for TPB predictions. Additionally, the degree to which parents viewed providing healthy foods and limiting unhealthy foods as effective in preventing obesity (response efficacy) was predictive of parent tracking of children's unhealthy eating behavior. Finally, parent TV viewing behavior was related to perceived response efficacy of limiting children's TV viewing hours. Practical implications for communication practitioners are discussed.

  12. Parental support and adolescent motivation for dieting: the Self-Determination Theory perspective.

    PubMed

    Katz, Idit; Madjar, Nir; Harari, Adi

    2015-01-01

    This article focuses on parents' role in overweight adolescents' motivation to diet and successful weight loss. The study employed Self-Determination Theory (SDT) as the theoretical framework (Deci & Ryan, 2000, 2011). Ninety-nine participants (ages 20-30) who had been overweight during adolescence according to their Body Mass Index (BMI mean = 25, SD = 1.6), completed retrospective questionnaires about their motivation to diet and their parents' behavior in the context of dieting. Findings from a structural equation modeling analysis suggested that participants who viewed their parents' as more need-supportive demonstrated more autonomous motivation to diet, which, in turn, contributed to their successful weight loss. The findings highlight the importance of parental support of adolescents' psychological needs in the quality of their motivation to diet. This is an important insight for parents and professionals who aim to encourage more constructive parent involvement in adolescents' dieting and well-being.

  13. A self-categorization theory perspective on adolescent boys' sexual bullying of girls.

    PubMed

    Page, Elysia; Shute, Rosalyn; McLachlan, Angus

    2015-02-01

    This preliminary study applied Self-Categorization Theory (SCT) to the sexual bullying of high school girls by boys. Seventy-five Year 9 boys responded to vignettes portraying sexual bullying in which gender was a more or a less salient feature of the social context described. As predicted, boys were more likely to engage in sexual bullying when gender was more salient. Masculine sex role was not correlated with engagement in sexual bullying. Controlling for social desirability, pro-bullying attitude was predictive of such engagement, but only when the social context rendered gender less salient. This suggests the power of the perceived social context for determining which individual characteristics will gain expression. It is concluded that SCT is a promising avenue for advancing understanding of bullying, a field of research that has previously largely lacked a theoretical focus.

  14. Spectra of empirical autocorrelation matrices: A random-matrix-theory-inspired perspective

    NASA Astrophysics Data System (ADS)

    Jamali, Tayeb; Jafari, G. R.

    2015-07-01

    We construct an autocorrelation matrix of a time series and analyze it based on the random-matrix theory (RMT) approach. The autocorrelation matrix is capable of extracting information which is not easily accessible by the direct analysis of the autocorrelation function. In order to provide a precise conclusion based on the information extracted from the autocorrelation matrix, the results must be first evaluated. In other words they need to be compared with some sort of criterion to provide a basis for the most suitable and applicable conclusions. In the context of the present study, the criterion is selected to be the well-known fractional Gaussian noise (fGn). We illustrate the applicability of our method in the context of stock markets. For the former, despite the non-Gaussianity in returns of the stock markets, a remarkable agreement with the fGn is achieved.

  15. [Emotional competence in the multiple intelligences theory from the perspective of laypersons].

    PubMed

    Nozaki, Yuki; Koyasu, Masuo

    2016-02-01

    Emotional competence has recently, become a widespread concern in schools and workplaces, both which deeplyinvolve laypersons. While academic researchers have discussed the status of emotional competence comparedto the traditional intelligence, it is very important to elucidate how laypersons regard emotional competencecompared to traditional intelligence as well. The present study investigated the position of emotional competencein the multiple intelligences theory by assessing laypersons' self-estimates of their abilities and their rating ofthe importance of emotional competence for thriving in society. Participants (N = 584) answered a questionnaireonline. Results showed that laypersons regarded emotional competence as a distinct construct, and most stronglyrelated it to personal intelligence. Moreover, their ratings of the importance of emotional competence and personalintelligence for thriving in society were higher than that of traditional intelligence.

  16. Antecedents of emotions in elite athletes: a cognitive motivational relational theory perspective.

    PubMed

    Uphill, Mark A; Jones, Marc V

    2007-03-01

    Cognitive motivational relational theory suggests that cognitive appraisals or core relational themes (a composite summary of appraisal components) represent the proximal determinants of athletes' emotions. Semistructured interviews with 12 current international athletes (1 woman and 11 men) ages 19 to 37 years (M age = 27 years, SD = 6.03), representing a range of sports (badminton, golf rugby union, athletics, archery, sailing, and snooker) explored the association between athletes' appraisals and emotions. Concurrent inductive and deductive content analyses suggested that primary and secondary appraisal components (goal relevance, goal congruence, ego-involvement, blame/credit, coping potential, future expectations) were associated with a range of emotions: anger anxiety, guilt, happiness, pride, relief sadness, and shame. A hierarchical content analysis provided some support for Lazarus' (1991) core relational themes. Limitations and applications of this study are discussed.

  17. Psychotropic medication from an object relations theory perspective: an analysis of vignettes from group psychotherapy.

    PubMed

    Fain, Dana Shindel; Sharon, Amos; Moscovici, Lucian; Schreiber, Shaul

    2008-07-01

    In this article we explore the content and dynamics of patients' verbalizations within a "living with medications" group. Patients' perceptions of their psychotropic medications are interpreted and classified within the framework of object relations theory. One's perception of the role of medication in one's life can serve as a gateway to one's inner world and the way that he or she perceives authority figures, peers, and oneself. We suggest that working through patients' relationships with their medications can help them to achieve better integration of internal object relations. Discussing patients' views about medications should therefore be seen as an important part of psychotherapy with many individuals. Such a discussion may enhance and improve efficacy of both psychotherapy and pharmacotherapy. It is of particular importance in group therapy, within milieu environments and with individuals reluctant to explicitly discuss interpersonal matters. Vignettes from the group sessions illustrate the way in which discussing medication advances group process.

  18. Development of Risky Decision Making: Fuzzy-Trace Theory and Neurobiological Perspectives.

    PubMed

    Reyna, Valerie F; Wilhelms, Evan A; McCormick, Michael J; Weldon, Rebecca B

    2015-06-01

    Developmental differences in mental representations of choices, reward sensitivity, and behavioral inhibition (self-control) explain greater susceptibility to risk taking. Ironically, relying on precise representations in reasoning promotes greater risk taking, but this reliance declines as adolescents mature. This phenomenon is known as a developmental reversal; it is called a reversal because it violates traditional developmental expectations of greater cognitive complexity with maturation. Fuzzy-trace theory (FTT) predicts reversals by proposing two types of mental representation (gist and verbatim), and that risk takers rely more on verbatim processing when making decisions. In this article, we describe the main tenets of FTT and explain how it can account for risky decision making. We also explore the neural underpinnings of development and decision making in the context of distinctions from FTT. FTT's predictions elucidate unanswered questions about risk taking, providing directions for research.

  19. Exercise, physical activity, and self-determination theory: A systematic review

    PubMed Central

    2012-01-01

    Background Motivation is a critical factor in supporting sustained exercise, which in turn is associated with important health outcomes. Accordingly, research on exercise motivation from the perspective of self-determination theory (SDT) has grown considerably in recent years. Previous reviews have been mostly narrative and theoretical. Aiming at a more comprehensive review of empirical data, this article examines the empirical literature on the relations between key SDT-based constructs and exercise and physical activity behavioral outcomes. Methods This systematic review includes 66 empirical studies published up to June 2011, including experimental, cross-sectional, and prospective studies that have measured exercise causality orientations, autonomy/need support and need satisfaction, exercise motives (or goal contents), and exercise self-regulations and motivation. We also studied SDT-based interventions aimed at increasing exercise behavior. In all studies, actual or self-reported exercise/physical activity, including attendance, was analyzed as the dependent variable. Findings are summarized based on quantitative analysis of the evidence. Results The results show consistent support for a positive relation between more autonomous forms of motivation and exercise, with a trend towards identified regulation predicting initial/short-term adoption more strongly than intrinsic motivation, and intrinsic motivation being more predictive of long-term exercise adherence. The literature is also consistent in that competence satisfaction and more intrinsic motives positively predict exercise participation across a range of samples and settings. Mixed evidence was found concerning the role of other types of motives (e.g., health/fitness and body-related), and also the specific nature and consequences of introjected regulation. The majority of studies have employed descriptive (i.e., non-experimental) designs but similar results are found across cross

  20. The effect of death anxiety and age on health-promoting behaviors: a terror-management theory perspective.

    PubMed

    Bozo, Ozlem; Tunca, Ayça; Simşek, Yeliz

    2009-07-01

    The authors aimed to examine the effect of death anxiety on the reports of health-promoting behaviors and to determine the role of age in this relation using a terror-management theory perspective. Participants were 100 individuals from young adult (those who were 20-35 years of age) and older adult (those who were 60 years of age and older) groups whom the authors assigned to the death anxiety or control conditions. The questionnaire set included a demographic information sheet and the Health-Promoting Lifestyle Profile II (S. Walker, K. R. Sechrist, & N. J. Pender, 1987). Before administering the scales, the authors gave the participants in the experimental condition a brief excerpt whose content induced death-related thoughts and led the participants to think about their own death. The authors calculated a 2 (young adults vs. older adults) x 2 (death anxiety vs. no death anxiety) between-subjects factorial analysis of variance (ANOVA) to test their hypotheses. Although ANOVA results did not yield a significant main effect for age, the main effect of the conditions was significant, indicating that people in the death anxiety condition reported more health-promoting behaviors than did people in the control condition. The interaction of the age and conditions was also significant. The authors discuss the strengths, limitations, and implications of the findings.

  1. Homosexual mating preferences from an evolutionary perspective: sexual selection theory revisited.

    PubMed

    Gobrogge, Kyle L; Perkins, Patrick S; Baker, Jessica H; Balcer, Kristen D; Breedlove, S Marc; Klump, Kelly L

    2007-10-01

    Studies in evolutionary psychology and sexual selection theory show that heterosexual men prefer younger mating partners than heterosexual women in order to ensure reproductive success. However, previous research has generally not examined differences in mating preferences as a function of sexual orientation or the type of relationship sought in naturalistic settings. Given that homosexual men seek partners for reasons other than procreation, they may exhibit different mating preferences than their heterosexual counterparts. Moreover, mating preferences may show important differences depending on whether an individual is seeking a long-term versus a short-term relationship. The purpose of the present study was to examine these issues by comparing partner preferences in terms of age and relationship type between homosexual and heterosexual men placing internet personal advertisements. Participants included 439 homosexual and 365 heterosexual men who placed internet ads in the U.S. or Canada. Ads were coded for the participant's age, relationship type (longer-term or short-term sexual encounter) sought, and partner age preferences. Significantly more homosexual than heterosexual men sought sexual encounters, although men (regardless of sexual orientation) seeking sexual encounters preferred a significantly wider age range of partners than men seeking longer-term relationships. These findings suggest that partner preferences are independent of evolutionary drives to procreate, since both types of men preferred similar ages in their partners. In addition, they highlight the importance of examining relationship type in evolutionary studies of mating preferences, as men's partner preferences show important differences depending upon the type of relationship sought.

  2. A theory for the evolution of other-regard integrating proximate and ultimate perspectives.

    PubMed

    Akçay, Erol; Van Cleve, Jeremy; Feldman, Marcus W; Roughgarden, Joan

    2009-11-10

    Although much previous work describes evolutionary mechanisms that promote or stabilize different social behaviors, we still have little understanding of the factors that drive animal behavior proximately. Here we present a modeling approach to answer this question. Our model rests on motivations to achieve objectives as the proximate determinants of behavior. We develop a two-tiered framework by first modeling the dynamics of a social interaction at the behavioral time scale and then find the evolutionarily stable objectives that result from the outcomes these dynamics produce. We use this framework to ask whether "other-regarding" motivations, which result from a kind of nonselfish objective, can evolve when individuals are engaged in a social interaction that entails a conflict between their material payoffs. We find that, at the evolutionarily stable state, individuals can be other-regarding in that they are motivated to increase their partners' payoff as well as their own. In contrast to previous theories, we find that such motivations can evolve because of their direct effect on fitness and do not require kin selection or a special group structure. We also derive general conditions for the evolutionary stability of other-regarding motivations. Our conditions indicate that other-regarding motivations are more likely to evolve when social interactions and behavioral objectives are both synergistic.

  3. The effect of health payment reforms on cost containment in Taiwan hospitals: the agency theory perspective.

    PubMed

    Chang, Li

    2011-01-01

    This study aims to determine whether the Taiwanese government's implementation of new health care payment reforms (the National Health Insurance with fee-for-service (NHI-FFS) and global budget (NHI-GB)) has resulted in better cost containment. Also, the question arises under the agency theory whether the monitoring system is effective in reducing the risk of information asymmetry. This study uses panel data analysis with fixed effects model to investigate changes in cost containment at Taipei municipal hospitals before and after adopting reforms from 1989 to 2004. The results show that the monitoring system does not reduce information asymmetry to improve cost containment under the NHI-FFS. In addition, after adopting the NHI-GB system, health care costs are controlled based on an improved monitoring system in the policymaker's point of view. This may suggest that the NHI's fee-for-services system actually causes health care resource waste. The GB may solve the problems of controlling health care costs only on the macro side.

  4. Action being character: a promising perspective on the solution concept of game theory.

    PubMed

    Deng, Kuiying; Chu, Tianguang

    2011-05-09

    The inconsistency of predictions from solution concepts of conventional game theory with experimental observations is an enduring question. These solution concepts are based on the canonical rationality assumption that people are exclusively self-regarding utility maximizers. In this article, we think this assumption is problematic and, instead, assume that rational economic agents act as if they were maximizing their implicit utilities, which turns out to be a natural extension of the canonical rationality assumption. Implicit utility is defined by a player's character to reflect his personal weighting between cooperative, individualistic, and competitive social value orientations. The player who actually faces an implicit game chooses his strategy based on the common belief about the character distribution for a general player and the self-estimation of his own character, and he is not concerned about which strategies other players will choose and will never feel regret about his decision. It is shown by solving five paradigmatic games, the Dictator game, the Ultimatum game, the Prisoner's Dilemma game, the Public Goods game, and the Battle of the Sexes game, that the framework of implicit game and its corresponding solution concept, implicit equilibrium, based on this alternative assumption have potential for better explaining people's actual behaviors in social decision making situations.

  5. Hydration of clays at the molecular scale: the promising perspective of classical density functional theory

    NASA Astrophysics Data System (ADS)

    Jeanmairet, Guillaume; Marry, Virginie; Levesque, Maximilien; Rotenberg, Benjamin; Borgis, Daniel

    2014-05-01

    We report here how the hydration of complex surfaces can be efficiently studied, thanks to recent advances in classical molecular density functional theory. This is illustrated on the example of the pyrophyllite clay. After presenting the most recent advances, we show that the strength of this implicit method is that: (1) it is in quantitative or semi-quantitative agreement with reference all-atom simulations (molecular dynamics here) for both the solvation structure and energetics, and (2) the computational cost is two to three orders of magnitude less than in explicit methods. The method remains imperfect in that it locally overestimates the polarisation of water close to hydrophylic sites of the clay. The high numerical efficiency of the method is illustrated and exploited to carry out a systematic study of the electrostatic and van der Waals components of the surface-solvent interactions within the most popular force field for clays, CLAYFF. Hydration structure and energetics are found to weakly depend upon the electrostatics. We conclude on the consequences of such findings on future force-field development.

  6. Business Model Design from an ANT Perspective: Contributions and Insights of an Open and Living Theory

    NASA Astrophysics Data System (ADS)

    Costa, Cristina Chuva; da Cunha, Paulo Rupino

    The way the Internet has connected millions of users at negligible costs has changed playing field for companies. Several stakeholders can now come together in virtual networks to create innovative business models that would be unfeasible in the physical world. However, the more radical the departure from the established models of value creation, the bigger the complexity in ensuring the sustained interest of the involved parties and the stability of the bonds. To address this problem, we sought inspiration in the Actor-Network Theory (ANT), which is capable of providing insights into socio-technical settings where human and non-human agents interact. We describe how several of its principles, ideas, and concepts were adapted and embedded in our approach for complex business model design or analysis. A simple illustration is provided. Our iterative approach helps systematically scrutinize and tune the contributions and returns of the various actors, ensuring that all end up with an attractive value proposal, thus promoting the robustness of the network. Guidelines for the services that an underlying information system must provide are also derived from the results.

  7. Thinking outside the box: a metacognitive / theory of mind perspective on concrete thinking.

    PubMed

    Tuch, Richard Howard

    2011-08-01

    Concrete thinking, an extraordinarily difficult condition to treat, has been psychoanalytically theorized to result from failures of symbolization-problems forming, linking, or fathoming the meaning of symbols-and/or failures of differentiation, resulting in difficulties distinguishing symbols from the thing being symbolized, fantasy from reality, self from other. Though difficulties symbolizing and differentiating are clearly evident in patients whose thinking is concrete, these may be a manifestation of concrete thinking rather than a root cause. Childhood thinking is characteristically concrete, and a persistence of such thinking into adulthood can be adequately explained as a failure to develop a more sophisticated theory of mind. Given that patients who exhibit such thinking tend to respond poorly to classic psychoanalytic interpretations, alternative technical approaches have been proposed. One such approach, "metacognitive" in nature, draws on a mode of thought used by gifted individuals that helps them "think outside the box" by dispensing with a typical pattern-recognition search so that novel meanings might be discovered. Metacognition, thoughts about one's thoughts and thought processes, facilitates symbolic thinking by creating sufficient distance from one's thoughts to allow the consideration of alternative meanings.

  8. Androgens and Androgen Derivatives: Science, Myths, and Theories: Explored From a Special Operations Perspective.

    PubMed

    Givens, Melissa L; Deuster, Patricia

    2015-01-01

    Androgen use outside of legitimate medical therapy is a perceived concern that is drawing attention across military and specifically Special Operations Forces (SOF) communities. For leadership and the medical community to properly address the issue and relate to those individuals who are using or considering use, it will be crucial to understand the scope of the problem. Limited data suggest that the prevalence of androgen use may be increasing, and inferences made from the scientific literature suggest that SOF may be a population of concern. While risks of androgen use are well known, there are little data specific to military performance that can be applied to a rigorous risk:benefit analysis, allowing myths and poorly supported theories to perpetuate within the community. Further efforts to define the potential benefits balanced against the short- and long-term risks should be undertaken. Providers within the SOF community should arm themselves with information to engage androgen users and leadership in meaningful discussion regarding androgen use.

  9. Implementing hospital innovation in Taiwan: the perspectives of institutional theory and social capital.

    PubMed

    Yang, Chen-Wei

    2015-01-01

    The main purpose of this study is to develop an innovation model for hospital organisations. For this purpose, this study explores and examines the determinants, capabilities and performance in the hospital sector. First, this discusses three categories of determinants that affect hospitals' innovative capability studies: (1) knowledge stock; (2) social ties; and (3) institutional pressures. Then, this study examines the idea of innovative hospital capabilities, defined as the ability of the hospital organisation to innovate their knowledge. Finally, the hospital evaluation rating, which identifies performance in the hospital sector, was examined. This study empirically tested the theoretical model at the organisation level. The findings suggest that a hospital's innovative capabilities are influenced by its knowledge stock, social ties, institutional pressures and the impact of hospital performance. However, in attempts to keep hospitals aligned with their highly institutionalised environments, it may prove necessary for hospital administrators to pay more attention to both existing knowledge stock and the process of innovation if the institutions are to survive. Finally, implications for theory and practitioners complete this study.

  10. Early narcissistic transference patterns: an exploratory single case study from the perspective of dialogical self theory.

    PubMed

    Dimaggio, Giancarlo; Fiore, Donatella; Lysaker, Paul Henry; Petrilli, Daniela; Salvatore, Giampaolo; Semerari, Antonio; Nicolò, Giuseppe

    2006-12-01

    Persons exhibiting narcissistic personality traits are difficult to treat in psychotherapy, in particular because of the problems they have in building up a sound therapeutic relationship. We discuss the hypothesis that the threats to a therapeutic alliance emerge both from patients' maladaptive patterns of behaving towards others and from therapists being affected by these patterns and becoming a part of a dysfunctional dialogue. We examine this phenomenon in terms of Dialogical Self Theory and suggest that a patient can be conceptualised as embodying a cast of characters weaving a problematic dialogue both within the self and with other selves. Via the analysis of the transcripts of the first four audiotaped sessions of a psychotherapy involving a woman with narcissistic traits we identified one early dominant dialogical pattern in which a contemptuous and a contemptible character faced each other, shadowing characters in search for help. Such a pattern is consistent with the literature on interpersonal processes in narcissism. The therapist was involved in the pattern from the third session, suggesting that countertransference with individuals displaying narcissistic personality traits is caused more by the pathology than by their therapist's characteristics. Implications for treatment are discussed.

  11. Medical education and cognitive continuum theory: an alternative perspective on medical problem solving and clinical reasoning.

    PubMed

    Custers, Eugène J F M

    2013-08-01

    Recently, human reasoning, problem solving, and decision making have been viewed as products of two separate systems: "System 1," the unconscious, intuitive, or nonanalytic system, and "System 2," the conscious, analytic, or reflective system. This view has penetrated the medical education literature, yet the idea of two independent dichotomous cognitive systems is not entirely without problems.This article outlines the difficulties of this "two-system view" and presents an alternative, developed by K.R. Hammond and colleagues, called cognitive continuum theory (CCT). CCT is featured by three key assumptions. First, human reasoning, problem solving, and decision making can be arranged on a cognitive continuum, with pure intuition at one end, pure analysis at the other, and a large middle ground called "quasirationality." Second, the nature and requirements of the cognitive task, as perceived by the person performing the task, determine to a large extent whether a task will be approached more intuitively or more analytically. Third, for optimal task performance, this approach needs to match the cognitive properties and requirements of the task. Finally, the author makes a case that CCT is better able than a two-system view to describe medical problem solving and clinical reasoning and that it provides clear clues for how to organize training in clinical reasoning.

  12. REVIEW: Internal models in sensorimotor integration: perspectives from adaptive control theory

    NASA Astrophysics Data System (ADS)

    Tin, Chung; Poon, Chi-Sang

    2005-09-01

    Internal models and adaptive controls are empirical and mathematical paradigms that have evolved separately to describe learning control processes in brain systems and engineering systems, respectively. This paper presents a comprehensive appraisal of the correlation between these paradigms with a view to forging a unified theoretical framework that may benefit both disciplines. It is suggested that the classic equilibrium-point theory of impedance control of arm movement is analogous to continuous gain-scheduling or high-gain adaptive control within or across movement trials, respectively, and that the recently proposed inverse internal model is akin to adaptive sliding control originally for robotic manipulator applications. Modular internal models' architecture for multiple motor tasks is a form of multi-model adaptive control. Stochastic methods, such as generalized predictive control, reinforcement learning, Bayesian learning and Hebbian feedback covariance learning, are reviewed and their possible relevance to motor control is discussed. Possible applicability of a Luenberger observer and an extended Kalman filter to state estimation problems—such as sensorimotor prediction or the resolution of vestibular sensory ambiguity—is also discussed. The important role played by vestibular system identification in postural control suggests an indirect adaptive control scheme whereby system states or parameters are explicitly estimated prior to the implementation of control. This interdisciplinary framework should facilitate the experimental elucidation of the mechanisms of internal models in sensorimotor systems and the reverse engineering of such neural mechanisms into novel brain-inspired adaptive control paradigms in future.

  13. Dynamics of two-phase interfaces and surface tensions: A density-functional theory perspective

    NASA Astrophysics Data System (ADS)

    Yatsyshin, Petr; Sibley, David N.; Duran-Olivencia, Miguel A.; Kalliadasis, Serafim

    2016-11-01

    Classical density functional theory (DFT) is a statistical mechanical framework for the description of fluids at the nanoscale, where the inhomogeneity of the fluid structure needs to be carefully accounted for. By expressing the grand free-energy of the fluid as a functional of the one-body density, DFT offers a theoretically consistent and computationally accessible way to obtain two-phase interfaces and respective interfacial tensions in a ternary solid-liquid-gas system. The dynamic version of DFT (DDFT) can be rigorously derived from the Smoluchowsky picture of the dynamics of colloidal particles in a solvent. It is generally agreed that DDFT can capture the diffusion-driven evolution of many soft-matter systems. In this context, we use DDFT to investigate the dynamic behaviour of two-phase interfaces in both equilibrium and dynamic wetting and discuss the possibility of defining a time-dependent surface tension, which still remains in debate. We acknowledge financial support from the European Research Council via Advanced Grant No. 247031 and from the Engineering and Physical Sciences Research Council of the UK via Grants No. EP/L027186 and EP/L020564.

  14. Dynamics of hourly sea level at Hillarys Boat Harbour, Western Australia: a chaos theory perspective

    NASA Astrophysics Data System (ADS)

    Khatibi, Rahman; Ghorbani, Mohammad Ali; Aalami, Mohammad Taghi; Kocak, Kasim; Makarynskyy, Oleg; Makarynska, Dina; Aalinezhad, Mahdi

    2011-11-01

    Water level forecasting using recorded time series can provide a local modelling capability to facilitate local proactive management practices. To this end, hourly sea water level time series are investigated. The records collected at the Hillarys Boat Harbour, Western Australia, are investigated over the period of 2000 and 2002. Two modelling techniques are employed: low-dimensional dynamic model, known as the deterministic chaos theory, and genetic programming, GP. The phase space, which describes the evolution of the behaviour of a nonlinear system in time, was reconstructed using the delay-embedding theorem suggested by Takens. The presence of chaotic signals in the data was identified by the phase space reconstruction and correlation dimension methods, and also the predictability into the future was calculated by the largest Lyapunov exponent to be 437 h or 18 days into the future. The intercomparison of results of the local prediction and GP models shows that for this site-specific dataset, the local prediction model has a slight edge over GP. However, rather than recommending one technique over another, the paper promotes a pluralistic modelling culture, whereby different techniques should be tested to gain a specific insight from each of the models. This would enable a consensus to be drawn from a set of results rather than ignoring the individual insights provided by each model.

  15. Job Search and Social Cognitive Theory: The Role of Career-Relevant Activities

    ERIC Educational Resources Information Center

    Zikic, Jelena; Saks, Alan M.

    2009-01-01

    Social cognitive theory was used to explain the relationships between career-relevant activities (environmental and self career exploration, career resources, and training), self-regulatory variables (job search self-efficacy and job search clarity), variables from the Theory of Planned Behavior (job search attitude, subjective norm, job search…

  16. Changing Investment in Activities and Interests in Elders' Lives: Theory and Measurement

    ERIC Educational Resources Information Center

    Adams, Kathryn Betts

    2004-01-01

    Socioemotional selectivity and gerotranscendence, newer theories with roots in the disengagement theory of aging, provided the theoretical framework for a new measure of perceived change in investment in a variety of pursuits. The 30-item Change in Activity and Interest Index (CAII) was given to a sample of 327 outpatients aged 65-94. Items with…

  17. Cultural-Historical Activity Theory: Vygotsky's Forgotten and Suppressed Legacy and Its Implication for Mathematics Education

    ERIC Educational Resources Information Center

    Roth, Wolff-Michael

    2012-01-01

    Cultural-historical activity theory--with historical roots in dialectical materialism and the social psychology to which it has given rise--has experienced exponential growth in its acceptance by scholars interested in understanding knowing and learning writ large. In education, this theory has constituted something like a well kept secret that is…

  18. Development and Evaluation of a Theory-Based Physical Activity Guidebook for Breast Cancer Survivors

    ERIC Educational Resources Information Center

    Vallance, Jeffrey K.; Courneya, Kerry S.; Taylor, Lorian M.; Plotnikoff, Ronald C.; Mackey, John R.

    2008-01-01

    This study's objective was to develop and evaluate the suitability and appropriateness of a theory-based physical activity (PA) guidebook for breast cancer survivors. Guidebook content was constructed based on the theory of planned behavior (TPB) using salient exercise beliefs identified by breast cancer survivors in previous research. Expert…

  19. Presenting Theoretical Ideas Prior to Inquiry Activities Fosters Theory-Level Knowledge

    ERIC Educational Resources Information Center

    Wecker, Christof; Rachel, Alexander; Heran-Dörr, Eva; Waltner, Christine; Wiesner, Hartmut; Fischer, Frank

    2013-01-01

    In the course of inquiry activities similar to those of real scientists, learners are supposed to develop knowledge both on the level of observable phenomena and on the level of explanatory theories. However, some theories involve theoretical entities (e.g., "Weiss domains") that cannot be observed directly and therefore may be hard to…

  20. Discourse and Identity in Cultural-Historical Activity Theory: A Response

    ERIC Educational Resources Information Center

    Daniels, Harry

    2007-01-01

    This article provides a response to two of the papers in the collection. In doing so it takes up two issues: the conceptualization and analysis of discourse within Cultural Historical Activity Theory (CHAT) and notions of identity and subject positioning within CHAT. Bernstein [(2000). "Pedagogy, symbolic control and identity: Theory research…