| 1. |
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| 2. |
- Barker, Dean, 1977-, et al.
(author)
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Constructive readings of interactive episodes : Examining ethics in physical education from a social constructionist perspective
- 2013
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In: Sport, Education and Society. - : Routledge. - 1357-3322 .- 1470-1243. ; 18:4, s. 511-526
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Journal article (peer-reviewed)abstract
- In this paper we illustrate how ways of thinking about ethics are tied up with sport and physical education practice and introduce an alternative approach that can help to develop ethical pedagogies. We begin by locating socio-moral education in physical education within historical and contemporary pedagogical scholarship. Our argument is that the work of today's physical educators is still shaped by claims that were made about school sport in the nineteenth century and that sport scholars have long had difficulties proving these claims empirically. Rather than search for data that can confirm or refute claims of moral learning, we examine how incidents related to moral behaviour occur during physical education lessons. To do this we draw on data from an ethnographic investigation of a school in North Western Switzerland. Specifically, we present three episodes of interaction in three different physical education lessons. To make sense of these episodes, we introduce a social constructionist perspective. The main assumptions of this perspective are: (1) meanings are created through dialogue and consensus and are context-relative; (2) interactions between people are joint accomplishments; and (3) contexts affect how people interact with one another. Equipped with a constructionist framework, we then inspect the interactive episodes more closely. We include brief discussions of how constructionist understandings might inform ethics pedagogies in the future, suggesting that practitioners should be cautious of universal understandings of ethics, consider pupils as members of communities that are held together by shared practices, provide space for pupils to position themselves differently during lessons and, finally, account for contextual factors when evaluating pupils' actions.
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| 3. |
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| 5. |
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| 6. |
- Barker, Dean, 1977, et al.
(author)
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Hanging up the shirt: an autoethnographic account of disengaging from a social rugby culture
- 2016
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In: Sport in Society. - : Informa UK Limited. - 1743-0437 .- 1743-0445. ; 19:5
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Journal article (peer-reviewed)abstract
- Violent practices are a common feature of homosocial sporting environments. The objective of the current paper is to explore how one individual disengaged from a sporting community characterized by such practices. An autoethnographic approach involving recollection and interactional exchanges is used to create a realist narrative account which offers insight into the process of disengagement. The narrative focuses on the: (1) ongoing nature of cultural participation; (2) agency and the restriction of ways of being in sports teams and (3) the durable nature of personal characteristics that are learned in sporting environments. These issues are discussed in light of cultural learning theory and specifically, the analytic concept, ‘becoming’. The paper concludes with methodological reflections and a consideration of directions for future research.
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| 7. |
- Barker, Dean, 1977-, et al.
(author)
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High performance sport and sustainability : a contradiction of terms?
- 2014
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In: Reflective Practice. - : Routledge. - 1462-3943 .- 1470-1103. ; 15:1, s. 1-11
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Journal article (peer-reviewed)abstract
- Success in high performance sport has always been highly valued. Today, lucrative contracts, sponsorship deals and opportunities for celebrity status are balanced against substantial time spent training and high chances of failure. With pressure mounting on athletes to make the most of their athletic 'investment', the temptation to compromise their future well-being by exploiting their bodies for short-term gain and/or by cheating is growing. The aim of this paper is to explore the utility of sustainability science for thinking about these types of issues. Sustainability science is an emerging field which seeks to preserve the well-being of the planet and those on it by exploring the potential of nature and culture without compromising the future resource base. It specializes in developing holistic perspectives, considering multiple time scales, optimizing current systems without compromising the carrying capacity of the Earth, but also questioning the values and principles that dominate current ways of producing and consuming. Sustainability science acknowledges that we live in a rapidly changing world characterized by high levels of complexity and uncertainty. The proposition developed in this paper is that an exploration of sustainability perspectives can be generative in re-thinking and re-orienting the principles of high level competitive sports.
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| 8. |
- Barker, Dean, 1977, et al.
(author)
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Jacob and Martin: Developing digital technology competence in physical education teacher education
- 2016
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In: Digital Technologies and Learning in Physical Education. - Abingdon, Oxon ; New York, NY : Routledge, 2016. | : Routledge. - 9781315670164 - 9781138947283 - 9781138947290 ; , s. 231-246
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Book chapter (other academic/artistic)abstract
- This chapter provides an illustration of how digital technologies (DTs) are experienced by Physical Education Teacher Education (PETE) students. The illustration is based on the reflections of two students at the University of Gothenburg, Sweden. The students received an assignment that involved demonstrating how a specific DT could be implemented. Three perspectives of the practitioners' experiences are provided. A Deweyan perspective shows how the students and their situations are transformed by DTs. A Foucauldian perspective focuses on the regulating aspects of technology. An applied Information Technology perspective demonstrates how DTs become part of the social practices of physical education. © 2017 Ashley Casey, Victoria A. Goodyear and Kathleen M. Armour. All rights reserved.
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| 9. |
- Barker, Dean, 1977, et al.
(author)
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'Just do a little more': examining expertise in high performance sport from a sociocultural learning perspective
- 2014
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In: Reflective Practice. - : Informa UK Limited. - 1462-3943 .- 1470-1103. ; 15:1, s. 92-105
-
Journal article (peer-reviewed)abstract
- Research suggests that extensive training is necessary for the development of sporting expertise. Research also suggests that extensive training can lead to overuse injuries. The aims of this paper are to: (1) expand the concept of expertise in high performance sport, and (2) contribute to the discussion of how high performance athletes move towards expert performance in sustainable ways. To achieve these aims, data from retrospective interviews with four Olympians from four different sports are presented. As a way of extending traditional approaches, a pedagogical framework focusing on dispositional learning is employed to examine athletic development. The notion of threshold concepts is used as a specific analytic tool for thinking about how athletes come to make sense of their sporting environments. Interpretations of the data provide insights into the nature of thresholds in high performance sport, factors that facilitate threshold crossing, and factors that may prevent athletes from making advances, all of which have implications for practitioners interested in developing expertise. © 2013 Taylor & Francis.
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| 10. |
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| 11. |
- Barker, Dean, 1977-, et al.
(author)
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Moving out of sports : A sociocultural examination of olympic career transitions
- 2014
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In: International journal of sports science & coaching. - : Sage Publications. - 1747-9541 .- 2048-397X. ; 9:2, s. 255-270
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Journal article (peer-reviewed)abstract
- This article outlines sociocultural learning theory, shows how this theory can be used to examine end-of-career athletic transitions, and stimulates discussion on the implications of this framework for sport professionals. The central question addressed is how learning in elite sport affects participation in activities beyond sporting settings. Data from in-depth, semi-structured interviews with three former Olympians are presented. The interpretation suggests that: 1) movement to new social settings involves abandoning some elements of athletic dispositions and developing new elements, 2) transitions are affected by prior learning in sport and the characteristics of new settings, and 3) learning in sporting environments is often unintentional or implicit. The results encourage practitioners to acknowledge the effort involved in developing new dispositions in different settings. They support a case-specific view of transitions where 'success' is considered in contextual terms. Further, the data highlight a need for sport professionals to recognize tacit learning.
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| 12. |
- Barker, Dean, 1977, et al.
(author)
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Olympism as education: analysing the learning experiences of elite athletes
- 2012
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In: Educational Review. - : Informa UK Limited. - 0013-1911 .- 1465-3397. ; 64:3, s. 368-383
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Journal article (peer-reviewed)abstract
- Olympic athletes are potentially the most visible exponents of Olympic values. How athletes learn values, however, has not captured the attention of those responsible for Olympic documentation or pedagogues. This paper examines how aspects of Olympism became relevant for three former Olympians during their athletic careers. Interview material suggested that: (1) inconsistencies within official expressions of Olympism mirror tensions in athletic experiences; (2) some claims concerning sport made in the Olympic Charter are simplistic and translate poorly to Olympic experiences that are multidimensional and complex; and (3) universal ethical principles have limited influence on how athletes conduct themselves. The results imply that pedagogues working with elite athletes should make discursive discontinuities in sport explicit, reflect on traditional views of sport education while acknowledging implicit learning, and approach questions of ethics from a specific and practice-oriented standpoint rather than a universal and principle-based one.
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| 13. |
- Barker, Dean, 1977, et al.
(author)
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Pedagogical narrative: Working with technology as student teachers
- 2016
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In: Pedagogical Cases: Digital Technologies in Youth Physical Activity, Physical Education & Sport. - London : Routledge.
-
Book chapter (peer-reviewed)abstract
- The objective of this chapter is to provide an illustration of how digital technologies are being experienced/utilised/problematised by physical educators. This chapter introduces two Physical Education Teacher Education (PETE) students working at the University of Gothenburg and focuses on course work conducted by those students within their program. The students received an assignment to choose a particular digital technology, develop their own competence with that technology, and then demonstrate to peers how the technology can be used to facilitate learning related to the Swedish physical education curriculum for upper secondary school. A narrative of their experiences and reflections, developed through written reflections as well as informal conversations with the lead author, is presented in the first section. Three theoretical accounts of the practitioners’ narrative are then put forward. A Deweyan perspective draws attention to the ways that students and their situations are continually transformed in transaction and how digital technologies become implicated in this process. A Foucaultian perspective focuses on the regulating and controlling aspects of technology and highlights the need for care when using digital technologies. An applied Information Technology perspective highlights the ways in which digital technologies may become part of the social practices of physical education. After introducing these perspectives, a broader pedagogical account is offered in which connections between the three perspectives and current physical education scholarship is made. These connections concern: (1) meaning making; (2) student agency and possibilities for student decision making; (3) the effects of technology on lesson content; and (4) students’ digital competence. The chapter is concluded with reflections from the two PETE students.
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| 14. |
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| 15. |
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| 16. |
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| 17. |
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| 18. |
- Barker, Dean, 1977, et al.
(author)
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Swiss youths, migration and integrative sport: A critical constructive reading of popular discourse
- 2013
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In: European Journal of Sport Sociology. - : Routledge. - 1613-8171 .- 2380-5919. ; 10:2, s. 143-160
-
Journal article (peer-reviewed)abstract
- This paper critically interrogates widespread assumptions pertaining to the integrative function of sporting involvement in Switzerland. It focuses specifically on young people living in a culturally diverse area and how they make use of discursive variations of the integrative sport text. Interview material draws attention to four main sub-texts that frame sport as: a pedagogical tool, a site of interpersonal exchange, a method of catharsis, and as an apolitical activity without relevance to ethnicity. It is argued that these sub-texts: (1) are embedded within broader culturalist discourse and, (2) either support divisive social relations or do little to challenge them. Both instances suggest that changes are necessary to the way sport is ‘produced’ in discourse if it is to positively influence ethnic relations.
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| 19. |
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| 20. |
- Barker, Dean, 1977, et al.
(author)
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Youths with migration backgrounds and their experiences of physical education: an examination of three cases
- 2014
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In: Sport, Education and Society. - : Informa UK Limited. - 1357-3322 .- 1470-1243. ; 19:2, s. 186-203
-
Journal article (peer-reviewed)abstract
- While understanding young people has never been easy, migration trends make it increasingly difficult. Many classrooms have become culturally heterogeneous and teachers are often faced with pupils with diverse linguistic and cultural heritages. Current scholarship suggests that as a discipline, physical education has not adapted to this diversity. In fact, commentators have suggested that physical education alienates pupils from minority groups and that traditional practices work to maintain cultural difference. The broad objective of this paper is to provide insights into how physical education intersects with biographies shaped by migration. Drawing from a case study investigation, this paper presents interview data from three youths with migration backgrounds living in a German-speaking region of Switzerland. The cases were selected because they highlight various ways in which physical education (PE) comes to make sense for adolescents. The key arguments that we develop are that ethnicity often works at an implicit level in PE, that young people experience the effects of migration backgrounds in diverse ways, and that migrants themselves support official educational discourses that work to disadvantage people with migration backgrounds. A key implication is that in a cultural milieu in which generalisations are normal and sometimes considered desirable, both researchers and practitioners need to be wary of racialising discourses. As an alternative, it is suggested that focusing on individual processes can improve the conceptualisation and implementation of physical education pedagogies.
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| 21. |
- Barker-Ruchti, Natalie, 1971-, et al.
(author)
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Athlete learning in Olympic sport
- 2014
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In: Sports Coaching Review. - : Routledge. - 2164-0629 .- 2164-0637. ; 3:2, s. 162-178
-
Journal article (peer-reviewed)abstract
- High-performance sport impacts athletes beyond the physical. Coaches and coaching practice are particularly influential in shaping this learning and development. This article examines the learning identified through an inductive content analysis of eight former Olympic athletes’ career narratives. Three phases of learning could be identified across the cohort: ‘Growing into high-performance sport’, ‘Making sense of high-performance sport’, and ‘(Re)shaping high-performance sport’. A cultural perspective of learning, in particular the metaphor of ‘becoming’, is employed to interpret the Olympians’ learning experiences. The findings of this research indicate that athlete learning is bound by particular high-performance sporting contexts and career phases, yet impacted by the athletes’ individual backgrounds and dispositions. Further, data indicate that athletes’ personal development reflexively intertwines with athletic performance and performance enhancement. Implications for coaches are to: (1) involve athletes in co-constructing their sporting cultures and training contexts; and (2) provide possibilities and support for athletes to develop personally.
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| 22. |
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| 23. |
- Barker-Ruchti, Natalie, 1971, et al.
(author)
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'One door closes, a next door opens up somewhere’: The learning of one Olympic synchronized swimmer
- 2012
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In: Reflective Practice. - : Informa UK Limited. - 1462-3943 .- 1470-1103. ; 13:3, s. 373-385
-
Journal article (peer-reviewed)abstract
- Although training in sport is necessary to reach Olympic status, a conditioned body is not the only outcome. Athletes also learn how to be Olympians. This learning involves taking on certain ways of acting, thinking and valuing. Such learning has implications beyond competition, as athletes eventually retire from elite sport and devote their time to other activities. This paper examines processes of learning and transition using the case of Amelia, a former Olympic synchronised swimmer. Through two in-depth interviews, empirical material was generated which focused on the learning that took place during this athlete’s career and after, during her transition to paid employment. A cultural view of learning was used as the theoretical frame to understand the athlete’s experiences. Our reading suggests that the athlete learned in various ways to be productive. Some of these ways of being were useful after retirement; others were less compatible. In fact, Amelia used a two-year period after retirement to reconstruct herself. Key to her eventual successful transition was to distance herself from the sport and to critically reflect upon her sporting experiences. We thus recommend that those involved with high-performance athletes foster a more balanced perspective that acknowledges and promotes ways of being beyond athletic involvement.
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| 24. |
- Barker-Ruchti, Natalie, 1971-, et al.
(author)
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Second Generation Immigrant Girls’ Negotiations of Cultural Proximity in Switzerland : A Foucauldian Reading
- 2015
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In: Journal of International Migration and Integration. - : Springer. - 1488-3473 .- 1874-6365. ; 16:4, s. 1213-1229
-
Journal article (peer-reviewed)abstract
- Although overtly racist political discourse in Switzerland has receded, culturalist discourses continue to construct ideal immigrants. Policies define immigrants in terms of “cultural proximity” and contain an implicit distinction between “distant” and “proximal” foreigners. Culturally, distant immigrants have been stereotyped as aggressive and/or lacking interest in education and professional success and while scholars have examined immigrants from Switzerland’s “culturally-near” regions, the experiences of second generation immigrant populations from perceived culturally distant countries have largely escaped attention. Knowledge about girls and women is particularly scarce. Against this backdrop, this paper provides an examination of how six teenage girls living in a German-speaking Swiss city negotiate their perceived cultural distance. By combining interview material with elements of Foucauldian theory, the paper provides insight into (1) the diasporic experiences of girls with second generation immigration backgrounds and (2) the operation and influence of culturalist discourses. Foucault’s notion of dispositive—the discourses, institutions, laws, and scientific findings that, through various means of distribution (e.g., media texts, policies, education curricula), act as an apparatus that constructs and supports normative ideals—provides a generative analytic tool for this task. The analysis suggests that the ways girls learn to understand their social worlds is a collective process of discipline that places mechanisms of social control within each individual. This process involves the homogenisation and marginalisation of the immigrant population and is circular in nature in that the girls strengthen and maintain the power of existing culturalist knowledge that works negatively on them. The paper concludes with a consideration of how this situation might be challenged.
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| 25. |
- Barker-Ruchti, Natalie, 1971-, et al.
(author)
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Sport-'It's Just Healthy' : Locating Healthism within Discourses of Social Integration
- 2013
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In: Journal of ethnic and migration studies. - : Routledge. - 1369-183X .- 1469-9451. ; 39:5, s. 759-772
-
Journal article (peer-reviewed)abstract
- Immigration discourses in Switzerland have developed out of a fear of 'over-foreignisation'. Central to this development are discourses of difference in which Swiss culture is centred and foreign ones are marginalised. At present, Eastern and South-East European cultures are particularly affected. In this article, we challenge perceived cultural incommensurability by examining the socialisation of second-generation girls of immigrant background, through data generated from semi-structured interviews with them. The girls draw on a tightly defined discursive range of linguistic resources to construct the meanings of sport, health and the body. Specifically, the girls refer to healthism, within which sport is seen to provide a means to achieve good health and a slim and feminine body. These references reflect a set of knowledge and discourses important to Western cultures. Alternative discursive resources exist, yet were not utilised. We argue that the girls' adoption of healthist ideas is used to counter cultural narratives-such as the uncultured, and thus non-integrated, immigrant-and that this adoption supports and maintains white healthist ideas, 'othering' the (foreign) other.
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| 26. |
- Barker-Ruchti, Natalie, 1971-, et al.
(author)
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Techno-rational knowing and phronesis : the professional practice of one middle-distance running coach
- 2014
-
In: Reflective Practice. - : Routledge. - 1462-3943 .- 1470-1103. ; 15:1, s. 53-65
-
Journal article (peer-reviewed)abstract
- Sport coaching has traditionally been seen as a techno-rational activity. In recent years, there has been a 'subjective turn'. Intuitive, as well as situation-specific interpretations are today perceived as necessary to handle complex, dynamic and often unpredictable sport environments. While a considerable body of research has attempted to understand coaching practice, research on intuitive and situation-dependent praxis is only emerging. Phronesis - mostly defined as practical wisdom or practical rationality - has been put forward as a useful theoretical concept to frame such coaching practice. In this contribution, we employ phronesis as part of sustainability science to consider the coaching of one top-level middle-distance running coach. Observations, informal talks and semi-structured interviews produced the empirical materials for this analysis. The results suggest that the coach's practice was guided by both techno-rational and phronetic knowledge. While techno-rational knowledge manifested itself in a focus on time and control, the latter was reflected in a concern for impact, focus on community, authenticity and modesty. From a phronetic perspective, these characteristics can be seen as morally just and important precursors for sustainable sport.
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| 27. |
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| 28. |
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| 29. |
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| 30. |
- Schael, S, et al.
(author)
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Precision electroweak measurements on the Z resonance
- 2006
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In: Physics Reports. - : Elsevier BV. - 0370-1573 .- 1873-6270. ; 427:5-6, s. 257-454
-
Research review (peer-reviewed)abstract
- We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17 million Z decays accumulated by the ALEPH, DELPHI, L3 and OPAL experiments at LEP, and 600 thousand Z decays by the SLID experiment using a polarised beam at SLC. The measurements include cross-sections, forward-backward asymmetries and polarised asymmetries. The mass and width of the Z boson, m(Z) and Gamma(Z), and its couplings to fermions, for example the p parameter and the effective electroweak mixing angle for leptons, are precisely measured: m(Z) = 91.1875 +/- 0.0021 GeV, Gamma(Z) = 2.4952 +/- 0.0023 GeV, rho(l) = 1.0050 +/- 0.0010, sin(2)theta(eff)(lept) = 0.23153 +/- 0.00016. The number of light neutrino species is determined to be 2.9840 +/- 0.0082, in agreement with the three observed generations of fundamental fermions. The results are compared to the predictions of the Standard Model (SM). At the Z-pole, electroweak radiative corrections beyond the running of the QED and QCD coupling constants are observed with a significance of five standard deviations, and in agreement with the Standard Model. Of the many Z-pole measurements, the forward-backward asymmetry in b-quark production shows the largest difference with respect to its SM expectation, at the level of 2.8 standard deviations. Through radiative corrections evaluated in the framework of the Standard Model, the Z-pole data are also used to predict the mass of the top quark, m(t) = 173(+10)(+13) GeV, and the mass of the W boson, m(W) = 80.363 +/- 0.032 GeV. These indirect constraints are compared to the direct measurements, providing a stringent test of the SM. Using in addition the direct measurements of m(t) and m(W), the mass of the as yet unobserved SM Higgs boson is predicted with a relative uncertainty of about 50% and found to be less than 285 GeV at 95% confidence level. (c) 2006 Elsevier B.V. All rights reserved.
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| 31. |
-
Sustainability and high performance sport
- 2015
-
Editorial collection (other academic/artistic)abstract
- Success in high performance sport is highly valued in today's world, with lucrative contracts, sponsorship deals, and opportunities for celebrity status balanced against substantial investments of time and energy, and high chances of failure. With pressure mounting on athletes and coaches to make the most of athletic investments, the temptation to make health-related or ethical compromises is growing. Sustainability in High Performance Sport examines the pressures faced by coaches and athletes, and considers how sustainable science can offer alternative pathways to sporting excellence. By applying principles relating to carrying capacities, complexity and uncertainty, production and consumption, and ethics, this unique book provides new ways of thinking about both enduring and emerging challenges. With a scope that includes themes such as coaching practices, coach-athlete relationships, over-training and injuries, the development of sporting expertise, and doping, Sustainability in High Performance Sport is the most comprehensive exploration of sustainability in elite sport available.It is an invaluable resource for anybody with an interest in achieving long-term success in high performance sport. This book was originally published as a special issue of Reflective Practice.
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| 32. |
-
Sustainability in high performance sport : current practices - future directions
- 2015
-
Editorial collection (other academic/artistic)abstract
- Success in high performance sport is highly valued in today's world, with lucrative contracts, sponsorship deals, and opportunities for celebrity status balanced against substantial investments of time and energy, and high chances of failure. With pressure mounting on athletes and coaches to make the most of athletic investments, the temptation to make health-related or ethical compromises is growing.Sustainability in High Performance Sport examines the pressures faced by coaches and athletes, and considers how sustainable science can offer alternative pathways to sporting excellence. By applying principles relating to carrying capacities, complexity and uncertainty, production and consumption, and ethics, this unique book provides new ways of thinking about both enduring and emerging challenges. With a scope that includes themes such as coaching practices, coach-athlete relationships, over-training and injuries, the development of sporting expertise, and doping, Sustainability in High Performance Sport is the most comprehensive exploration of sustainability in elite sport available.It is an invaluable resource for anybody with an interest in achieving long-term success in high performance sport. This book was originally published as a special issue of Reflective Practice.
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| 33. |
- Tay, Nicole, et al.
(author)
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Allele-Specific Methylation of SPDEF : A Novel Moderator of Psychosocial Stress and Substance Abuse
- 2019
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In: American Journal of Psychiatry. - : AMER PSYCHIATRIC PUBLISHING, INC. - 0002-953X .- 1535-7228. ; 176:2, s. 146-155
-
Journal article (peer-reviewed)abstract
- Objective: Psychosocial stress is a key risk factor for substance abuse among adolescents. Recently, epigenetic processes such as DNA methylation have emerged as potential mechanisms that could mediate this relationship. The authors conducted a genome-wide methylation analysis to investigate whether differentially methylated regions are associated with psychosocial stress in an adolescent population.Methods: A methylome-wide analysis of differentially methylated regions was used to examine a sample of 1,287 14-year-old adolescents (50.7% of them female) from the European IMAGEN study. The Illumina 450k array was used to assess DNA methylation, pyrosequencing was used for technical replication, and linear regression analyses were used to identify associations with psychosocial stress and substance use (alcohol and tobacco). Findings were replicated by pyrosequencing a test sample of 413 participants from the IMAGEN study.Results: Hypermethylation in the sterile alpha motif/pointed domain containing the ETS transcription factor (SPDEF) gene locus was associated with a greater number of stressful life events in an allele-dependent way. Among individuals with the minor G-allele, SPDEF methylation moderated the association between psychosocial stress and substance abuse. SPDEF methylation interacted with lifetime stress in gray matter volume in the right cuneus, which in turn was associated with the frequency of alcohol and tobacco use. SPDEF was involved in the regulation of trans-genes linked to substance use.Conclusions: Taken together, the study findings describe a novel epigenetic mechanism that helps explain how psychosocial stress exposure influences adolescent substance abuse.
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| 34. |
- Kanai, M, et al.
(author)
-
- 2023
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swepub:Mat__t
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| 35. |
- Aarskog, Eirik, et al.
(author)
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What were you thinking? A methodological approach for exploring decision-making and learning in physical education
- 2019
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In: Sport, Education and Society. - : Routledge. - 1357-3322 .- 1470-1243. ; 24:8, s. 828-840
-
Journal article (peer-reviewed)abstract
- The broad purpose of this paper is to consider the relationship betweendecision-making and learning. Specifically, our aim is to propose amethodology that provides a theoretical framing along with proceduresfor investigating this relationship in Physical Education (PE). By utilizingselected parts of John Dewey’s educational theories, the paper presentsa theoretical exposition of decision-making as an individual processcontaining both ‘practical’ and ‘cognitive’ aspects. By combining thistheoretical conceptualization with a description of concrete researchmethods, the paper proposes a methodological approach enablingresearchers to get empirically closer to the phenomenon of individualdecision-making within PE learning. We argue that by doing so,researchers in the field of PE can study certain aspects of learning notexplicitly emphasized within existing methodological approaches.
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| 36. |
- Aarskog, Eirik, et al.
(author)
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'When it's something that you want to do.' : Exploring curriculum negotiation in Norwegian PE
- 2022
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In: Physical Education and Sport Pedagogy. - : Routledge. - 1740-8989 .- 1742-5786. ; 27:6, s. 640-653
-
Journal article (peer-reviewed)abstract
- Background: Student participation in curriculum negotiation has been widely regarded as beneficial for student engagement, motivation, and learning. Within the physical education (PE) context however, several scholars claim that these benefits are seldom realized. Interestingly, most investigations into curriculum negotiation in PE focus on teacher actions and behavior. Investigations of students' actions in curriculum negotiation are rare. Further, while much of the literature claims curriculum negotiation is potentially beneficial for student learning, few of the conceptual and analytical frameworks utilized within previous PE literature are based on explicit learning theories.Purpose: The purpose of this paper is to explore student participation in curriculum negotiation in Norwegian PE through the lens of an explicit learning theoretical perspective.Method: A 10th grade class with 23 students (age 15-16) and an 8th grade class with 30 students (age 13-14) from 2 different schools, and their respective teachers were recruited for the project. Within these classes, participatory observation, video observations, and stimulated recall interviews were conducted to produce empirical material related to curriculum negotiation. The material then underwent qualitative thematic analysis where select parts of John Dewey's educational philosophy were used as the analytical framework.Results and discussion: With a basis in the analytical framework developed from Deweyan educational philosophy, the results show that students within the two contexts participate in both explicit and implicit forms of curriculum negotiation. Explicit curriculum negotiations to a large degree appear to be governed by the teachers and are deemed by teachers to be part of strategies for upholding Norwegian legislations and recommendations for including students in curricular decision-making. While not as easily noticeable, implicit forms of negotiations were more prominent within the explored contexts. The analysis also suggests that from a Deweyan perspective, possibilities to increase learning through curriculum negotiations occur when teachers notice, help, and guide students in their own reflective processes surrounding how to act in PE. Such pedagogical action makes implicit negotiations occurring more explicit, and explicit negotiations more intelligent.
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| 37. |
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| 38. |
- Aasi, J., et al.
(author)
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Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data
- 2013
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In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 87:4
-
Journal article (peer-reviewed)abstract
- This paper presents results of an all-sky search for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative range of similar to[-20, 1.1] x 10(-10) Hz s(-1) for the fifth LIGO science run (S5). The search uses a noncoherent Hough-transform method to combine the information from coherent searches on time scales of about one day. Because these searches are very computationally intensive, they have been carried out with the Einstein@Home volunteer distributed computing project. Postprocessing identifies eight candidate signals; deeper follow-up studies rule them out. Hence, since no gravitational wave signals have been found, we report upper limits on the intrinsic gravitational wave strain amplitude h(0). For example, in the 0.5 Hz-wide band at 152.5 Hz, we can exclude the presence of signals with h(0) greater than 7.6 x 10(-25) at a 90% confidence level. This search is about a factor 3 more sensitive than the previous Einstein@Home search of early S5 LIGO data.
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| 39. |
- Aasi, J., et al.
(author)
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Parameter estimation for compact binary coalescence signals with the first generation gravitational-wave detector network
- 2013
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In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 88:6
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Journal article (peer-reviewed)abstract
- Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational-wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model selection are crucial analysis steps for any detection candidate events. Detailed models of the anticipated waveforms enable inference on several parameters, such as component masses, spins, sky location and distance, that are essential for new astrophysical studies of these sources. However, accurate measurements of these parameters and discrimination of models describing the underlying physics are complicated by artifacts in the data, uncertainties in the waveform models and in the calibration of the detectors. Here we report such measurements on a selection of simulated signals added either in hardware or software to the data collected by the two LIGO instruments and the Virgo detector during their most recent joint science run, including a "blind injection'' where the signal was not initially revealed to the collaboration. We exemplify the ability to extract information about the source physics on signals that cover the neutron-star and black-hole binary parameter space over the component mass range 1M(circle dot)-25M(circle dot) and the full range of spin parameters. The cases reported in this study provide a snapshot of the status of parameter estimation in preparation for the operation of advanced detectors.
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| 40. |
- Aasi, J., et al.
(author)
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Search for gravitational waves from binary black hole inspiral, merger, and ringdown in LIGO-Virgo data from 2009-2010
- 2013
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In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 87:2
-
Journal article (peer-reviewed)abstract
- We report a search for gravitational waves from the inspiral, merger and ringdown of binary black holes (BBH) with total mass between 25 and 100 solar masses, in data taken at the LIGO and Virgo observatories between July 7, 2009 and October 20, 2010. The maximum sensitive distance of the detectors over this period for a (20, 20)M-circle dot coalescence was 300 Mpc. No gravitational wave signals were found. We thus report upper limits on the astrophysical coalescence rates of BBH as a function of the component masses for nonspinning components, and also evaluate the dependence of the search sensitivity on component spins aligned with the orbital angular momentum. We find an upper limit at 90% confidence on the coalescence rate of BBH with nonspinning components of mass between 19 and 28M(circle dot) of 3:3 x 10(-7) mergers Mpc(-3) yr(-1).
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| 41. |
- Aasi, J., et al.
(author)
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The characterization of Virgo data and its impact on gravitational-wave searches
- 2012
-
In: Classical and Quantum Gravity. - : IOP Publishing. - 1361-6382 .- 0264-9381. ; 29:15
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Journal article (peer-reviewed)abstract
- Between 2007 and 2010 Virgo collected data in coincidence with the LIGO and GEO gravitational-wave (GW) detectors. These data have been searched for GWs emitted by cataclysmic phenomena in the universe, by non-axisymmetric rotating neutron stars or from a stochastic background in the frequency band of the detectors. The sensitivity of GW searches is limited by noise produced by the detector or its environment. It is therefore crucial to characterize the various noise sources in a GW detector. This paper reviews the Virgo detector noise sources, noise propagation, and conversion mechanisms which were identified in the three first Virgo observing runs. In many cases, these investigations allowed us to mitigate noise sources in the detector, or to selectively flag noise events and discard them from the data. We present examples from the joint LIGO-GEO-Virgo GW searches to show how well noise transients and narrow spectral lines have been identified and excluded from the Virgo data. We also discuss how detector characterization can improve the astrophysical reach of GW searches.
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| 42. |
- Aasland, Erik, et al.
(author)
-
Enacting a new physical education curriculum : a collaborative investigation
- 2024
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In: Sport, Education and Society. - : Routledge. - 1357-3322 .- 1470-1243.
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Journal article (peer-reviewed)abstract
- Previous research shows that enacting a new curriculum is a complex process. Teachers can be enthusiastic and committed to new curricular objectives, but they can also experience frustration and disappointment. Scholars have suggested that teachers who perceive lack of support, or tensions between their personal philosophies and the educational principles underpinning a new curriculum, struggle to enact new curricula in line with their intent. Our purpose in this article is to illustrate how two Physical Education (PE) teachers experienced the enactment of a new official curriculum. An action research approach was used as design of the study. Researchers cooperated with two PE teachers for 18 months. The empirical material consisted of 50 sets of field notes from the two teachers' teaching lessons, transcripts from one semi-structured qualitative interview with both teachers following the completion of the school year. The material also consisted of reflection logs produced by the teachers containing written notes about their experiences of the curriculum enactment. We used literature on educational change (Fullan, M., & Hargreaves, A. (1991). What's worth fighting fore? Working together for your school. Ontario Public School Teachers' Federation) as our theoretical framework. Our findings show that the teachers experienced the curriculum enactment in contradictory ways. Shifting from previous PE practices that focused on sports activities and emphasized teacher instruction, to pedagogical practices informed by the new PE curriculum (including sociocultural perspectives of learning and assessment), led to uncertainty, surprise, satisfaction, as well as distrust. Our findings also showed that the teachers' experiences of the enactment were influenced by perceived gender biases. We argue that teachers' beliefs and the teaching culture were particularly influential dimensions regarding the two PE teachers' experiences of the curriculum enactment. Practitioners and researchers attempting curriculum enactment in the future should pay careful attention to such dimensions, especially given that tensions and uncertainty often occur during any educational change.
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| 43. |
- Abadie, J., et al.
(author)
-
All-sky search for gravitational-wave bursts in the second joint LIGO-Virgo run
- 2012
-
In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 85:12
-
Journal article (peer-reviewed)abstract
- We present results from a search for gravitational-wave bursts in the data collected by the LIGO and Virgo detectors between July 7, 2009 and October 20, 2010: data are analyzed when at least two of the three LIGO-Virgo detectors are in coincident operation, with a total observation time of 207 days. The analysis searches for transients of duration less than or similar to 1 s over the frequency band 64-5000 Hz, without other assumptions on the signal waveform, polarization, direction or occurrence time. All identified events are consistent with the expected accidental background. We set frequentist upper limits on the rate of gravitational-wave bursts by combining this search with the previous LIGO-Virgo search on the data collected between November 2005 and October 2007. The upper limit on the rate of strong gravitational-wave bursts at the Earth is 1.3 events per year at 90% confidence. We also present upper limits on source rate density per year and Mpc(3) for sample populations of standard-candle sources. As in the previous joint run, typical sensitivities of the search in terms of the root-sum-squared strain amplitude for these waveforms lie in the range similar to 5 x 10(-22) Hz(-1/2) to similar to 1 x 10(-20) Hz(-1/2). The combination of the two joint runs entails the most sensitive all-sky search for generic gravitational-wave bursts and synthesizes the results achieved by the initial generation of interferometric detectors.
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| 44. |
- Abadie, J., et al.
(author)
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All-sky search for periodic gravitational waves in the full S5 LIGO data
- 2012
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In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 85:2
-
Journal article (peer-reviewed)abstract
- We report on an all-sky search for periodic gravitational waves in the frequency band 50-800 Hz and with the frequency time derivative in the range of 0 through -6 x 10(-9) Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. After recent improvements in the search program that yielded a 10x increase in computational efficiency, we have searched in two years of data collected during LIGO's fifth science run and have obtained the most sensitive all-sky upper limits on gravitational-wave strain to date. Near 150 Hz our upper limit on worst-case linearly polarized strain amplitude h(0) is 1 x 10(-24), while at the high end of our frequency range we achieve a worst-case upper limit of 3.8 x 10(-24) for all polarizations and sky locations. These results constitute a factor of 2 improvement upon previously published data. A new detection pipeline utilizing a loosely coherent algorithm was able to follow up weaker outliers, increasing the volume of space where signals can be detected by a factor of 10, but has not revealed any gravitational-wave signals. The pipeline has been tested for robustness with respect to deviations from the model of an isolated neutron star, such as caused by a low-mass or long-period binary companion.
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| 45. |
- Abadie, J., et al.
(author)
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First low-latency LIGO plus Virgo search for binary inspirals and their electromagnetic counterparts
- 2012
-
In: Astronomy & Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 541
-
Journal article (peer-reviewed)abstract
- Aims. The detection and measurement of gravitational-waves from coalescing neutron-star binary systems is an important science goal for ground-based gravitational-wave detectors. In addition to emitting gravitational-waves at frequencies that span the most sensitive bands of the LIGO and Virgo detectors, these sources are also amongst the most likely to produce an electromagnetic counterpart to the gravitational-wave emission. A joint detection of the gravitational-wave and electromagnetic signals would provide a powerful new probe for astronomy. Methods. During the period between September 19 and October 20, 2010, the first low-latency search for gravitational-waves from binary inspirals in LIGO and Virgo data was conducted. The resulting triggers were sent to electromagnetic observatories for followup. We describe the generation and processing of the low-latency gravitational-wave triggers. The results of the electromagnetic image analysis will be described elsewhere. Results. Over the course of the science run, three gravitational-wave triggers passed all of the low-latency selection cuts. Of these, one was followed up by several of our observational partners. Analysis of the gravitational-wave data leads to an estimated false alarm rate of once every 6.4 days, falling far short of the requirement for a detection based solely on gravitational-wave data.
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| 46. |
- Abadie, J., et al.
(author)
-
Implementation and testing of the first prompt search for gravitational wave transients with electromagnetic counterparts
- 2012
-
In: Astronomy & Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 539
-
Journal article (peer-reviewed)abstract
- Aims. A transient astrophysical event observed in both gravitational wave (GW) and electromagnetic (EM) channels would yield rich scientific rewards. A first program initiating EM follow-ups to possible transient GW events has been developed and exercised by the LIGO and Virgo community in association with several partners. In this paper, we describe and evaluate the methods used to promptly identify and localize GW event candidates and to request images of targeted sky locations. Methods. During two observing periods (Dec. 17, 2009 to Jan. 8, 2010 and Sep. 2 to Oct. 20, 2010), a low-latency analysis pipeline was used to identify GW event candidates and to reconstruct maps of possible sky locations. A catalog of nearby galaxies and Milky Way globular clusters was used to select the most promising sky positions to be imaged, and this directional information was delivered to EM observatories with time lags of about thirty minutes. A Monte Carlo simulation has been used to evaluate the low-latency GW pipeline's ability to reconstruct source positions correctly. Results. For signals near the detection threshold, our low-latency algorithms often localized simulated GW burst signals to tens of square degrees, while neutron star/neutron star inspirals and neutron star/black hole inspirals were localized to a few hundred square degrees. Localization precision improves for moderately stronger signals. The correct sky location of signals well above threshold and originating from nearby galaxies may be observed with similar to 50% or better probability with a few pointings of wide-field telescopes.
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| 47. |
- Abadie, J., et al.
(author)
-
Search for Gravitational Waves Associated with Gamma-Ray Bursts during LIGO Science Run 6 and Virgo Science Runs 2 and 3
- 2012
-
In: Astrophysical Journal. - 0004-637X. ; 760:1
-
Journal article (peer-reviewed)abstract
- We present the results of a search for gravitational waves associated with 154 gamma-ray bursts (GRBs) that were detected by satellite-based gamma-ray experiments in 2009-2010, during the sixth LIGO science run and the second and third Virgo science runs. We perform two distinct searches: a modeled search for coalescences of either two neutron stars or a neutron star and black hole, and a search for generic, unmodeled gravitational-wave bursts. We find no evidence for gravitational-wave counterparts, either with any individual GRB in this sample or with the population as a whole. For all GRBs we place lower bounds on the distance to the progenitor, under the optimistic assumption of a gravitational-wave emission energy of 10(-2) M-circle dot c(2) at 150 Hz, with a median limit of 17 Mpc. For short-hard GRBs we place exclusion distances on binary neutron star and neutron-star-black-hole progenitors, using astrophysically motivated priors on the source parameters, with median values of 16 Mpc and 28 Mpc, respectively. These distance limits, while significantly larger than for a search that is not aided by GRB satellite observations, are not large enough to expect a coincidence with a GRB. However, projecting these exclusions to the sensitivities of Advanced LIGO and Virgo, which should begin operation in 2015, we find that the detection of gravitational waves associated with GRBs will become quite possible.
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| 48. |
- Abadie, J., et al.
(author)
-
Search for gravitational waves from intermediate mass binary black holes
- 2012
-
In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 85:10
-
Journal article (peer-reviewed)abstract
- We present the results of a weakly modeled burst search for gravitational waves from mergers of nonspinning intermediate mass black holes in the total mass range 100-450 M-circle dot and with the component mass ratios between 1: and 4:1. The search was conducted on data collected by the LIGO and Virgo detectors between November of 2005 and October of 2007. No plausible signals were observed by the search which constrains the astrophysical rates of the intermediate mass black holes mergers as a function of the component masses. In the most efficiently detected bin centered on 88 + 88 M-circle dot, for nonspinning sources, the rate density upper limit is 0.13 per Mpc(3) per Myr at the 90% confidence level.
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| 49. |
- Abadie, J., et al.
(author)
-
Search for gravitational waves from low mass compact binary coalescence in LIGO's sixth science run and Virgo's science runs 2 and 3
- 2012
-
In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 85:8
-
Journal article (peer-reviewed)abstract
- We report on a search for gravitational waves from coalescing compact binaries using LIGO and Virgo observations between July 7, 2009, and October 20, 2010. We searched for signals from binaries with total mass between 2 and 25M(circle dot); this includes binary neutron stars, binary black holes, and binaries consisting of a black hole and neutron star. The detectors were sensitive to systems up to 40 Mpc distant for binary neutron stars, and further for higher mass systems. No gravitational-wave signals were detected. We report upper limits on the rate of compact binary coalescence as a function of total mass, including the results from previous LIGO and Virgo observations. The cumulative 90% confidence rate upper limits of the binary coalescence of binary neutron star, neutron star-black hole, and binary black hole systems are 1.3 x 10(-4), 3.1 x 10(-5), and 6.4 x 10(-6) Mpc(-3) yr(-1), respectively. These upper limits are up to a factor 1.4 lower than previously derived limits. We also report on results from a blind injection challenge.
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| 50. |
- Abadie, J., et al.
(author)
-
Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz
- 2012
-
In: Physical Review D (Particles, Fields, Gravitation and Cosmology). - 1550-2368. ; 85:12
-
Journal article (peer-reviewed)abstract
- A stochastic background of gravitational waves is expected to arise from a superposition of many incoherent sources of gravitational waves, of either cosmological or astrophysical origin. This background is a target for the current generation of ground-based detectors. In this article we present the first joint search for a stochastic background using data from the LIGO and Virgo interferometers. In a frequency band of 600-1000 Hz, we obtained a 95% upper limit on the amplitude of Omega(GW)(f) = Omega(3)(f/900 Hz)(3), of Omega(3) < 0.32, assuming a value of the Hubble parameter of h(100) = 0.71. These new limits are a factor of seven better than the previous best in this frequency band.
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