An investigation of the in-game behaviours of professional, top-level youth soccer coaches   总被引：2，自引：2，他引：0  

Smith M  Cushion CJ 《Journal of sports sciences》2006,24(4):355-366

Although research into coaching has increased considerably during the last two decades, an area of neglect has been that of the professional youth coach. The aim of this study was to investigate the working behaviours of six top-level professional soccer coaches. Data were collected using a modified version of the Arizona State University Observation Instrument and semi-structured interviews. The triangulation of the data ensured that both the "what" and the "why" of the coaches' behaviour were considered. Results revealed a conscious and well thought out pattern of behaviour: silently monitoring, interspersed with clips of instruction coupled with praise and encouragement. The interviews revealed three themes underpinning this behaviour: developing game understanding, support and encouragement, and coaches' role and influences. The use of silence was the largest single behaviour, the efficacy of which was considered in light of theories of experiential and discovery learning.  相似文献   

Celebration,USA: The First Sign of What Will Be America's Homogeneous Landscape     

Matt Thomas 《Journal of American culture (Malden, Mass. : 2003)》2007,30(2):187-197

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网络技术:改进数据访问的性能     

Matt Haynos 《中国传媒科技》2007,(7)

谈起网格,肯定要涉及数据、信息以及如何在分布式的基础设施上对二者进行智能化处理.而这个时候似乎更让大家着迷的是网格的计算能力,而数据在以计算为重点的网格中仅能占据次席.  相似文献   

Motivational interviewing: theory,practice and applications with children and young people,edited by E. McNamara     

Matt Stiles 《Emotional and Behavioural Difficulties》2014,19(3):329-331

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The Closing of the Professorial Mind: A Meditation on Plato and Allan Bloom     

Matt Silliman 《Educational theory》1990,40(1):147-151

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Is it wrong to play violent video games?     

Matt McCormick 《Ethics and Information Technology》2001,3(4):277-287

Many people have a strong intuition that there is something morallyobjectionable about playing violent video games, particularly withincreases in the number of people who are playing them and the games'alleged contribution to some highly publicized crimes. In this paper,I use the framework of utilitarian, deontological, and virtue ethicaltheories to analyze the possibility that there might be some philosophicalfoundation for these intuitions. I raise the broader question of whetheror not participating in authentic simulations of immoral acts in generalis wrong. I argue that neither the utilitarian, nor the Kantian hassubstantial objections to violent game playing, although they offersome important insights into playing games in general and what it ismorally to be a ``good sport.' The Aristotelian, however, has a plausibleand intuitive way to protest participation in authentic simulations ofviolent acts in terms of character: engaging in simulated immoral actserodes one's character and makes it more difficult for one to live afulfilled eudaimonic life.  相似文献   

Individual Differences in the Stability and Change of Childhood Depression: A Growth Mixture Model With Structured Residuals     

Matt Hawrilenko  Katherine E. Masyn  Janine Cerutti  Erin C. Dunn 《Child development》2021,92(4):e343-e363

Studies of developmental trajectories of depression are important for understanding depression etiology. Existing studies have been limited by short time frames and no studies have explored a key factor: differential patterns of responding to life events. This article introduces a novel analytic technique, growth mixture modeling with structured residuals, to examine the course of youth depression in a large, prospective cohort (N = 11,641, ages 4–16.5, 96% White). Age-specific critical points were identified at ages 8 and 13 where depression symptoms spiked for a minority of children. Most depression risk was due to dynamic responses to environmental events, drawn not from a small pool of persistently depressed children, but a larger pool of children who varied across higher and lower symptom levels.  相似文献   

Validity Evidence of an Electronic Portfolio for Preservice Teachers     

Yuankun Yao  Matt Thomas  Nicole Nickens  Joyce Anderson Downing  Ruth S. Burkett  Sharon Lamson 《Educational Measurement》2008,27(1):10-24

This study applied Messick's unified, multifaceted concept of construct validity to an electronic portfolio system used in a teacher education program. The subjects included 128 preservice teachers who recently completed their final portfolio reviews and student teaching experiences. Four of Messick's six facets of validity were investigated for the portfolio in this study, along with a discussion of the remaining facets examined in two previous studies. The evidence provided support for the substantive and generalizability aspects of validity, and limited support for the content, structural, external, and consequential aspects of validity. It was suggested that the electronic portfolio may be used as one requirement for certification purposes, but may not be valid for the purpose of assessing teacher competencies .  相似文献   

A Twin and Adoption Study of Reading Achievement: Exploration of Shared-Environmental and Gene-Environment-Interaction Effects     

Kirkpatrick RM  Legrand LN  Iacono WG  McGue M 《Learning and individual differences》2011,21(4):368-375

Existing behavior-genetic research implicates substantial influence of heredity and modest influence of shared environment on reading achievement and reading disability. Applying DeFries-Fulker analysis to a combined sample of twins and adoptees (N = 4,886, including 266 reading-disabled probands), the present study replicates prior findings of considerable heritability for both reading achievement and reading disability. A simple biometric model adequately described parent and offspring data (combined N = 9,430 parents and offspring) across differing types of families present in the sample Analyses yielded a high heritability estimate (around 0.70) and a negligible shared-environmentality estimate for both reading achievement and reading disability. No evidence of gene × environment interaction was found for parental reading ability and parental educational attainment, the two moderators analyzed.  相似文献   

The effect of normal load force and roughness on the dynamic traction developed at the shoe–surface interface in tennis     

James Clarke  Sharon J. Dixon  Loic Damm  Matt J. Carré 《Sports Engineering》2013,16(3):165-171

During tennis-specific movements, such as accelerating and side stepping, the dynamic traction provided by the shoe–surface combination plays an important role in the injury risk and performance of the player. Acrylic hard court tennis surfaces have been reported to have increased injury occurrence, partly caused by increased traction that developed at the shoe–surface interface. Often mechanical test methods used for the testing and categorisation of playing surfaces do not tend to simulate loads occurring during participation on the surface, and thus are unlikely to predict the human response to the surface. A traction testing device, discussed in this paper, has been used to mechanically measure the dynamic traction force between the shoe and the surface under a range of normal loading conditions that are relevant to real-life play. Acrylic hard court tennis surfaces generally have a rough surface topography, due to their sand and acrylic paint mixed top coating. Surface micro-roughness will influence the friction mechanisms present during viscoelastic contacts, as found in footwear–surface interactions. This paper aims to further understand the influence micro-roughness and normal force has on the dynamic traction that develops at the shoe–surface interface on acrylic hard court tennis surfaces. The micro-roughness and traction of a controlled set of acrylic hard court tennis surfaces have been measured. The relationships between micro-roughness, normal force, and traction force are discussed.  相似文献