651 research outputs found

    Eu-Eu exchange interaction and Eu distribution in Pb_(1-x)Eu_(x)Te from magnetization steps

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    The magnetization of Pb_{1-x}Eu_{x}Te samples with x = 1.9, 2.6 and 6.0% was measured at 20 mK in fields up to 50 kOe, and at 0.6 K in fields up to 180 kOe. The 20 mK data show the magnetization steps (MSTs) arising from pairs and from triplets. The pair MSTs are used to obtain the dominant Eu-Eu antiferromagnetic exchange constant, J/k_{B} = -0.264 \pm 0.018 K. The exchange constant for triplets is the same. Comparison of the magnetization curves with theoretical simulations indicates that the Eu ions are not randomly distributed over all the cation sites. The deviation from a random distribution is much smaller if J is assumed to be the nearest-neighbor exchange constant J_{1} rather than the next-nearest-neighbor exchange constant J_{2}. On this basis, J is tentatively identified as J_{1}. To obtain agreement with the data, it must be assumed that the Eu ions tend to bunch together. Comparision with microprobe data indicates that the length scale for these concentration variations is smaller than a few micrometer. The theoretical simulations in the present work improve on those performed earlier by including clusters larger than three spins.Comment: 9 pages, 6 figs, Revtex, accepted for publication in Phys. Rev.

    How was your day? : exploring a day in the life of probation workers across Europe using practice diaries

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    This paper presents a reflection upon the preliminary analysis of diary research conducted during the period 2014-2015 in five European countries (England and Wales, France, Norway, Romania and Slovakia). The authors gathered and analysed data from a pilot project which used semi-structured diaries to generate data on probation workers’ daily lives with a view to understanding ‘a day in the life’ of probation officers across jurisdictions. The findings open up questions in relation to diary research in probation practice (diary format, follow-up interview etc.) and we use this article to discuss the relative advantages and benefits of using diary research in this area. We conclude with the argument that diaries as a method of social research hold considerable potential for conducting research in the context of probation but acknowledge that the method we employed requires some development and greater clarification in terms of the aims of the research

    Meta-action research with pre-service teachers: a case study

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    This article analyses a case of action research collaboratively conducted by a university teacher and 50 students in a master's course in teacher training. Its originality resides in the socio-economic, academic, and conceptual nature of the obstacles encountered in the module; in the meta-theoretical orientation of the action research that was chosen to overcome them; and in how triangulation strategies were devised to compensate for the limitations imposed by the academic framing of the course. In spite of the brevity of the research cycle, both the structure of the course and teacher-student interaction improved rapidly and significantly, as did the latter's trust in the teacher. As a result, important advances in learning also ensued, and the pedagogical potential of this research method was thereby confirmed

    Coach development through collaborative action research: enhancing the learning environment within a national talent development system

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    Motivation to learn is an essential factor of talent being realised , which throws into light the essential role that the motivational climate plays in developing talent. Through collaborative action research, the aim of this study was to develop coaches’ learning to enhance the learning environment within a national talent development system, utilising the) TARGET framework (task, authority, recognition, grouping, evaluation and time). Results revealed that participatory collaborative action research is an effective coach development tool for coaches in order to enhance their learning and the motivational climate within their sessions. The study identified the benefits of coach development through participatory action research, revealing a highly positive response to the role that collaborative learning played in pedagogical developmen

    Collaboration between academics and teachers : a complex relationship

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    Collaboration between academics and teachers has become increasingly prevalent over recent years. Whether its aim is joint research or continuing professional development for teachers, collaboration seems to offer a realistic opportunity for reducing the perceived gap between theory and practice. However, collaboration is not merely academics and teachers working together on a common project. It is complex in nature and involves a range of requirements that must be satisfied in order to maximise the potential of the relationship. In this paper we will theorise on the nature of academics and teachers working together and suggest that a working relationship between academic researchers and teachers can be one of three models: client–supplier, a coercive relationship or a collaborative relationship. We identify and unpack specific factors that underpin collaboration and suggest a number of concrete actions to establish collaboration between academics and teachers. We draw heavily from existing literature and our own reflections on two collaborative projects with which we have recently been involved. We use data from these projects to provide a number of anecdotes from the teachers who participated to support our own reflections. Finally, we suggest that further research should investigate the different ways attempts to collaborate fail, to build a more complete sense of the problems and potential of this special relationship. Keywords: collaboration; continuing professional development; action research; science teacher

    Dimensions of professional competences for interventions towards sustainability

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    This paper investigates sustainability competences through the eyes of professional practitioners in the field of sustainability and presents empirical data that have been created using an action research approach. The design of the study consists of two workshops, in which professional practitioners in interaction with each other and the facilitators are invited to explore and reflect on the specific knowledge, skills, attitudes and behaviours necessary to conduct change processes successfully towards sustainability in a variety of business and professional contexts. The research focuses on the competences associated with these change processes to devise, propose and conduct appropriate interventions that address sustainability issues. Labelled ‘intervention competence’, this ability comprises an interlocking set of knowledge, skills, attitudes and behaviours that include: appreciating the importance of (trying to) reaching decisions or interventions; being able to learn from lived experience of practice and to connect such learning to one’s own scientific knowledge; being able to engage in political-strategic thinking, deliberations and actions, related to different perspectives; the ability for showing goal-oriented, adequate action; adopting and communicating ethical practices during the intervention process; being able to cope with the degree of complexity, and finally being able to translate stakeholder diversity into collectively produced interventions (actions) towards sustainability. Moreover, this competence has to be practised in contexts of competing values, non-technical interests and power relations. The article concludes with recommendations for future research and practice

    Becoming a teacher educator – the motivational factors

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    This study explores the factors that influenced the transition made by three participants from primary class teacher (or first-order practitioner) to Teacher Education (TE) lecturer (or second-order practitioner) in a Scottish Teacher Education Institution (TEI). The self-study case study methodology explored the factors that encouraged, and potentially inhibited, this career change. Data collection utilised auto-ethnographic narrative and findings were reviewed using a thematic analysis. Results are considered using a theoretical framework provided by Deci and Ryan’s Self-Determination Theory (SDT). The study identified three common, key themes leading to the participants career change: exploration and reinvention, key figures and lifelong learners. The findings suggest the participants were largely intrinsically motivated to make the career change. The results provide an insight for teachers considering this move and administrators within teacher education. The personal development implications for the participants are also considered

    Bringing installation art to reconnaissance to share values and generate action

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    The English education system has recently seen something of a revival of enthusiasm for the use of research both to develop educational practices and to gather evidence about their effectiveness. These initiatives often present action research as a model of individual problem-solving, which, we argue, communicates a limited conception of action research. In this paper we propose an alternative to this ‘problem-solving’ conception of action research that acknowledges the complex, messy nature of action research through the use of arts installations. Specifically, we present the reconnaissance phase of a project which brought together a partnership comprising a water heritage museum, university staff, teachers and artists. A pedagogical adaptation of contemporary installation art theory and practice fostered the exploration of individual and collective understandings of water, and also established a shared approach to curriculum development and ownership of the project among all participants. We propose that this creative practice enhanced and changed the process of reconnaissance; it allowed the group to establish and share commitments to the value of water conservation and generated a wide range of options for our action research

    The impact of the arts in social work education: a systematic review

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    Evidence on the effectiveness of arts-based approaches in professional education has been gathering momentum in the last decade embracing disciplines such as medicine, the allied professions, social work and social care. Key texts have emerged promoting the use of the arts in professional education and there have been some attempts to capture empirical evidence on its value. This paper reports on a systematic review of the current body of knowledge on the impact of the arts in social work education. We introduce the rationale for undertaking a systematic review and the methodology and approach used. We then discuss the three significant themes from our synthesis of the evidence reviewed. These were; positioning social work practice through linking micro and macro thinking; the cultivation of leadership beyond verbal reasoning and art as pedagogy. The findings are discussed in the context of what the arts can offer challenges in social work education

    Integrating the promotion of physical activity within a smoking cessation programme: Findings from collaborative action research in UK Stop Smoking Services

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    Background: Within the framework of collaborative action research, the aim was to explore the feasibility of developing and embedding physical activity promotion as a smoking cessation aid within UK 6/7-week National Health Service (NHS) Stop Smoking Services. Methods: In Phase 1 three initial cycles of collaborative action research (observation, reflection, planning, implementation and re-evaluation), in an urban Stop Smoking Service, led to the development of an integrated intervention in which physical activity was promoted as a cessation aid, with the support of a theoretically based self-help guide, and self monitoring using pedometers. In Phase 2 advisors underwent training and offered the intervention, and changes in physical activity promoting behaviour and beliefs were monitored. Also, changes in clients’ stage of readiness to use physical activity as a cessation aid, physical activity beliefs and behaviour and physical activity levels were assessed, among those who attended the clinic at 4-week post-quit. Qualitative data were collected, in the form of clinic observation, informal interviews with advisors and field notes. Results: The integrated intervention emerged through cycles of collaboration as something quite different to previous practice. Based on field notes, there were many positive elements associated with the integrated intervention in Phase 2. Self-reported advisors’ physical activity promoting behaviour increased as a result of training and adapting to the intervention. There was a significant advancement in clients’ stage of readiness to use physical activity as a smoking cessation aid. Conclusions: Collaboration with advisors was key in ensuring that a feasible intervention was developed as an aid to smoking cessation. There is scope to further develop tailored support to increasing physical activity and smoking cessation, mediated through changes in perceptions about the benefits of, and confidence to do physical activity
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