Throwing patterns used by collegiate baseball players in actual games     

Barrett DD  Burton AW 《Research quarterly for exercise and sport》2002,73(1):19-27

The form of 3,684 throws made by 100 players in 7 collegiate baseball games was examined in relation to position, distance, and active and inactive situations. All throws made from the first pitch to the last out for 94 half innings were videotaped from the stands. The results showed that the interrater reliability of task, environment, and performance measures were all acceptable to excellent (percentage of agreement was at least 80%), indicating that qualitative aspects of throwing can be reliably measured in an actual sport context. Alternatives to the most advanced pattern were observed at least half the time for catchers and infielders at most distances in both active and inactive situations andfor pitchers and outfielders only in inactive situations.  相似文献   

Book Reviews     

Ian M. Johnson  Paula Younger  Louise Ellis‐Barrett  Charles Oppenheim 《Learned Publishing》2006,19(4):309-315

Growth, creativity and collaboration: great visions on a Great Lake – proceedings of the North American Serials Interest Group, Inc. 19th annual conference, June 17–20, 2004, Milwaukee, Wisconsin. 2005 Ed. P. S. French and M. Mering The Haworth Information Press, Binghamton, NY, ISBN 0‐7890‐2976‐6 US $34.95 Communicating in style by Yateendra Joshi The Energy and Resources Institute, India, 2003, 81 7993 016 5, £7.50 Bookmaking: Editing, Design, Production by Marshall Lee W. W. Norton & Co. Ltd., 2004, hardback, ISBN 0393730182 The Institutional Repository By Richard Jones, Theo Andrew and John MacColl Chandos Publishing, 2005, ISBN 1 84334 138 7, 237pp.  相似文献   

Optimal Linking Design for Response Model Parameters          下载免费PDF全文

Michelle D. Barrett  Wim J. van der Linden 《Journal of Educational Measurement》2017,54(3):285-305

Linking functions adjust for differences between identifiability restrictions used in different instances of the estimation of item response model parameters. These adjustments are necessary when results from those instances are to be compared. As linking functions are derived from estimated item response model parameters, parameter estimation error automatically propagates into linking error. This article explores an optimal linking design approach in which mixed‐integer programming is used to select linking items to minimize linking error. Results indicate that the method holds promise for selection of linking items.  相似文献   

The effects of different drawing materials on children’s drawings of positive and negative human figures     

Esther Burkitt  Martyn Barrett 《教育心理学》2011,31(4):459-479

Children tend to use certain drawing strategies differentially when asked to draw topics with positive and negative emotional characterisations. These effects have however only been established when children are asked to use standard drawing materials. The present study was designed to investigate whether the above pattern of children’s response when drawing characterised figures would alter when children are asked to use different drawing materials. One hundred and thirty‐two children (69 boys and 63 girls) aged between four and 11 years were divided into two conditions and completed two counterbalanced test sessions, rating colour preferences and drawing characterised figures using either stick or block crayons. It was found that some drawing strategies varied in relation to drawing materials and in relation to the precise characterisation employed. The results are discussed in terms of the need for interpretations of emotional information in children’s drawings to take account of the exact materials used.  相似文献   

Information Technology and Social Transformation: GIS for Forestry Management in India   总被引：2，自引：0，他引：2  

Michael Barrett  Sundeep Sahay  Geoff Walsham 《The Information Society》2001,17(1):5-20

In this article, we examine an in-depth case of the introduction of geographical information systems (GIS) in the Indian forestry sector and associated social transformations. Our study is informed by Giddens's recent theoretical developments on globalizing influences at the institutional level and their interconnectedness to new trust systems and self-identity at the individual level. We examine how some elements of our case analysis are illuminated by Giddens's theoretical concepts, and also highlight some potential areas for further theoretical development. In particular, our case suggests that there are ongoing processes of stability as well as reflexivity, and we also develop the concept of trust systems to support interactions with new groups of people. Finally, our analysis notes some limitations of Giddens's ideas, especially the somewhat homogeneous form of his theory in suggesting the nature of social transformations in current times. Instead, the case emphasizes the need to examine more closely cultural and other sociocultural characteristics in particular contexts, and how they play out with global influences.  相似文献   

The Concerns of Mainstream Teachers: Coping with inclusivity in an Australian context     

Chris Forlin  Margaret Keen  Emma Barrett 《International Journal of Disability, Development & Education》2008,55(3):251-264

Throughout the past two decades there has been a move away from educating children with disabilities in segregated schools to adopting a more inclusive approach within mainstream schools in all jurisdictions in Australia. This research identifies the concerns of 228 regular class teachers in Western Australia who have all been involved with the inclusion of a child with an intellectual disability in their classrooms. Seven categories of concerns are investigated together with the use and effectiveness of a range of coping strategies. Demographic differences in age, year level being taught, qualifications, teaching experience and previous involvement with inclusion were found regarding concerns about inclusion. The discussion focuses on the relevance of professional development and the need to ensure that it targets the specific concerns of teachers, focusing on the coping strategies recognised as being most useful in order to provide optimal conditions for success.  相似文献   

If you build it,they will stay: the development of public cricket provision as a construction of social citizenship     

Martin Barrett 《Sport in Society》2019,22(6):1062-1081

Abstract

Immigration is transforming the United States and cultural diversity is becoming increasingly visible within an emerging poly-ethnic society. Such a challenge to the singularity of cultural assimilation is having policy implications at multiple levels. For municipal parks and recreation departments, this cultural shift presents an extra dimension to the local government role of providing facilities that meet the needs of residents. This paper presents the case study of Church Street Park in Morrisville, North Carolina, which is the site of the first purpose-built cricket facility in the Research Triangle area. Furthermore, this paper argues that a Marshallian framework, albeit in re-conceptualized terms, can elicit the objective and subjective domains of citizenship as constructed through sport participation. Specifically, the development of the cricket field fosters a mono-ethnic and diasporic identity as well as a rich sense of belonging among the growing resident South Asian immigrant population.  相似文献   

BlueGene／P的早期评估     

Sadaf Alam  Richard Barrett 《中国教育网络》2009,(1):31-31

BlueGene/P（BCP）是IBM继BlueGen／L后的第二代BlueGene体系结构。BGP是一个单芯片系统（SoC）,使用4个超级PC,450个850MHz、拥有双倍精度、双管道浮点运算单元的核心。这些芯片由多连接网络互相连接,包括一个3-D环．一个全局的共享网络,一个全局的屏障网络。这篇论文我们汇报了BGP在一些重要科学程序上的验证,以及与其它目前使用的主要大规模超级计算机的对比。我们的调查证明BGP有很好的扩展性以及在某些内核上很低的单次浮点运算耗能,  相似文献   

The influence of equipment variations on sliotar–hurley impact in the Irish game of hurling     

Amjad Alsakarneh  Keith Bryan  Matt Cotterell  John Barrett 《Sports Engineering》2012,15(4):177-188

The game of hurling is ranked as one of the fastest and most skilful field games in the world. It is played by a stick, hurley, made of ash wood and a ball, sliotar, made of a cork core or similar viscoelastic materials. Better standardisation of the game equipment requires analysing impacts to quantify precisely the effect of variations in equipment design on the resultant impact force at low and high striking speeds. Therefore, the purpose of the present study was to use a high-speed camera to (1) characterise the impact dynamics in term of impact force magnitude and duration, and (2) investigate whether a relationship exists between the game equipment and the magnitude of the impact force. An air cannon unit (ACU) test rig was set up to cause the sliotar to strike the hurley at predetermined speeds. A high-speed camera operating at 12,500 frames per second (fps) was used to capture 32 experimental impacts covering a range of sliotar and hurley brands, impact locations and impact speeds. The factor ??sliotar brand?? was identified as the most significant factor for the impact force among other main factors and two-factor interactions at a constant speed and it had a significant effect with up to 27?% difference between sliotar brands. It was demonstrated that, at higher impact speeds, the force?Cdeformation curves of the sliotar brands varied significantly, even though similar force?Cdeformation curves have been reported at quasi-static compression and similar COR values at low impact speeds using the standard free-drop test. This is the first known study to characterise the unique, highly non-linear and anisotropic sliotar?Churley impact using high-speed camera technology. It highlights the need for a tighter standard for sliotar materials and manufacturing to increase uniformity between different brands and strongly suggests that the standard free-drop test is not sufficient to characterise and compare game equipment.  相似文献   

Undergraduate Student Socialization and Learning in an Online Professional Curriculum   总被引：1，自引：0，他引：1  

Karri A. Holley  Barrett J. Taylor 《Innovative Higher Education》2009,33(4):257-269

Using data collected from a qualitative case study of an online baccalaureate nursing program, we examined the influence of online degree programs on undergraduate student socialization and learning. We considered how components of socialization—knowledge acquisition, investment, and involvement—are influenced by the online context. The findings suggest the importance of considering non-academic influences in regards to nontraditional student experiences. The theoretical intersection of online learning and undergraduate student development offers new and significant areas of research, specifically related to the pedagogical role of faculty and the impact of social engagement. Implications for future research and practice are offered. Karri A. Holley  received her Ph.D. from the University of Southern California. She is Assistant Professor at the University of Alabama. Her research interests include graduate/professional education, interdisciplinary curricula, and qualitative inquiry. Barrett J. Taylor  is a Ph.D. student at the University of Georgia. His research focuses on religious colleges and universities.  相似文献