984 research outputs found

    Superconducting properties of the In-substituted topological crystalline insulator, SnTe

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    We report detailed investigations of the properties of a superconductor obtained by substituting In at the Sn site in the topological crystalline insulator (TCI), SnTe. Transport, magnetization and heat capacity measurements have been performed on crystals of Sn0.6_{0.6}In0.4_{0.4}Te, which is shown to be a bulk superconductor with TconsetT_c^{\rm{onset}} at 4.70(5)\sim4.70(5)~K and TczeroT_c^{\rm{zero}} at 3.50(5)\sim3.50(5)~K. The upper and lower critical fields are estimated to be μ0Hc2(0)=1.42(3)\mu_0H_{c2}(0)=1.42(3)~T and μ0Hc1(0)=0.90(3)\mu_0H_{c1}(0)=0.90(3)~mT respectively, while κ=56.4(8)\kappa=56.4(8) indicates this material is a strongly type II superconductor

    A strengths-based consultancy approach in elite sport : exploring super strengths.

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    There is a lack of literature documenting strengths-based approaches in sport psychology. This study explored how a super-strengths approach has been implemented by sport psychologists (n = 7) and coaches (n = 8), with UK elite athletes. Findings were categorized into 3 general dimensions: defining super-strengths, identification methods, and phases of development. Super-strengths were defined as a strategy for performance, utilizing a potential world’s-best resource to gain a competitive edge. Identification methods were subjective (e.g., asking/observing athletes) and objective (e.g., performance analysis). Participants emphasized 3 development phases: preparation, adaptation and monitoring. Findings offer considerations for implementing a strengths-based approach and future research

    Elite coaches' experiences of creating pressure training environments for performance enhancement

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    Recent research supports the practice of pressure training in sport (Bell, Hardy, & Beattie, 2013), yet limited knowledge exists regarding how pressure is systematically created. This study explored how 11 elite coaches developed pressure training environments for the performance enhancement of their athletes. Following thematic analysis of transcribed semi-structured interviews, findings detailed how coaches manipulated a variety of stressors (e.g., task, forfeit, judgment) to manage the demands and consequences of training. Facilitated by individual differences, this process created pressure, defined as the perception that it is important to perform exceptionally. The findings provide a framework for developing pressure, coping mechanisms, and performance in training environments in preparation for future sporting competition

    Perceptions of Engaging with a Super-Strengths Approach in Elite Sport

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    Strengths-based approaches (underpinned by positive psychology) are scarcely documented in sport. This study explored perceptions of a strengths-based approach (termed super-strengths) on psychological characteristics and performance in elite sport. Semi-structured interviews were conducted with athletes (N=12) who had previous experience of working with a sport psychology practitioner on super-strengths. Thematic analysis of the data (Braun & Clarke, 2006) indicated that super-strengths had a positive influence on athletes’ mind-set, confidence (e.g., self-belief), clarity of purpose (e.g., goal direction), drive, coping ability, and performance. Findings highlight the potential benefits of adopting strengths-based approaches in sport, and recommendations for future research are provided. Key words: positive, performance psychology, confidence, elite sport

    Rods Near Curved Surfaces and in Curved Boxes

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    We consider an ideal gas of infinitely rigid rods near a perfectly repulsive wall, and show that the interfacial tension of a surface with rods on one side is lower when the surface bends towards the rods. Surprisingly we find that rods on both sides of surfaces also lower the energy when the surface bends. We compute the partition functions of rods confined to spherical and cylindrical open shells, and conclude that spherical shells repel rods, whereas cylindrical shells (for thickness of the shell on the order of the rod-length) attract them. The role of flexibility is investigated by considering chains composed of two rigid segments.Comment: 39 pages including figures and tables. 12 eps figures. LaTeX with REVTe

    A Strengths-Based Consultancy Approach In Elite Sport : Exploring Super Strengths.

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    There is a lack of literature documenting strengths-based approaches in sport psychology. This study explored how a super-strengths approach has been implemented by sport psychologists (n = 7) and coaches (n = 8), with UK elite athletes. Findings were categorized into 3 general dimensions: defining super-strengths, identification methods, and phases of development. Super-strengths were defined as a strategy for performance, utilizing a potential world’s-best resource to gain a competitive edge. Identification methods were subjective (e.g., asking/observing athletes) and objective (e.g., performance analysis). Participants emphasized 3 development phases: preparation, adaptation and monitoring. Findings offer considerations for implementing a strengths-based approach and future research
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