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The aim of this study was to examine the relationship between shoulder alignment and elbow angle during the delivery action of fast-medium bowlers. The elbow and upper trunk alignment were recorded for 13 high-performance bowlers (mean age 20 years) using a 12-camera Vicon motion analysis system operating at 250 Hz. The three highest velocity trials for "good" and "short" length deliveries were analysed. Results showed that bowlers with a more front-on shoulder alignment at back-foot impact and when the upper arm was horizontal to the ground experienced a significantly greater elbow flexion--extension range when compared with those who had a more side-on orientation at the same point in the delivery action. Bowlers with greater shoulder counter-rotation also recorded higher elbow flexion and subsequently extension during the period from upper arm horizontal to ball release. Shoulder alignment and elbow angles were similar for "short" and "good" length deliveries. It was concluded that bowlers with a more front-on shoulder orientation at back-foot impact demonstrated a higher elbow extension from upper arm horizontal to ball release and are therefore more likely to infringe International Cricket Council elbow tolerance levels, compared with those who adopt a more side-on shoulder orientation at back-foot impact. 相似文献
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This article describes children's views of what English will be like in ten years time. Children from year 2 (6–7 year olds) and year 6 (10–11 year olds) took part in a study which involved discussion, writing activities and interviews. It was found that, on the whole, these children saw English in the future as being a balance between traditional methods of teaching and learning and technological innovations and advancements. For these children, technology will become an essential part of their education and their lives outside school. 相似文献
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Teachers are always searching for fresh ideas that address children's growth needs. Ideas that provide learning opportunities
which are developmentally appropriate are particularly welcomed. using play as a medium for facilitating literacy growth is
one such opportunity. We know from current theory, research and practice that sociodramatic play contributes to children's
learning. Its importance in the development of literacy skills has also been investigated and affirmed.
See Christie, 1991; Dodge & Frost, 1986; Fisher, 1991; Isenberg & Jacob, 1985; Morrow, 1989, 1990; Morrow & Rand, 1991; Pellegrini,
1980; Rogers & Sawyers, 1988; Schickendanz, 1986; Woodard, 1984. 相似文献
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M. J. Foster 《Higher Education》1983,12(4):389-397
It has recently been suggested that “portfolio analysis” has a role to play in the strategic planning of institutions of higher education. This article examines this proposition and finds it to be broadly correct. The article discusses the adaptation of the technique to the current context and then describes its application to data from a university. 相似文献
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W R Foster 《Bulletin of the Medical Library Association》1972,60(3):439-444
As a basis for thoughts on the roles of reference books and computerized information services in general, a comparison is made of the value to medical libraries of a comprehensive reference tool (the new dual media publication Biomedical Research in Progress) and a comprehensive information center file (the Smithsonian Science Information Exchange, the national resource for information on research in progress). It is concluded that a detailed reference tool which is physically present for library users has several advantages, in particular the provision of both detailed and comprehensive retrieval of all biomedical research information at substantially less annual cost and with faster access time than is possible with comparable questions put to an information center. On the other hand, the information center is able to provide more up-to-date material in more flexible combinations. The recommendation is made that medical libraries avoid treating the comprehensive reference tool and the computerized information file as alternatives and instead view both as necessary and complementary to each other. 相似文献
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Michèle Foster Leah Halliday Jonathan Baize James Chisholm 《Multicultural Perspectives》2020,22(2):68-78
Michèle was hurrying to class. How, she thought, could she offer the students in her African American English in Society and Schools class a method of understanding, comparing, and abstracting the studies they had been reading in class? The heuristic described in this study evolved from a desire to capture aspects of several seminal studies that illustrated how African American English was deployed in classrooms for productive work with African American students. Michèle recalled that whenever she asked graduate students or practicing teachers what they, other teachers, and schools might do to improve the schooling of students of color, one of the most consistent responses was Culturally Responsive Pedagogy (CRP). However, when pressed and asked what one would detect in classrooms where CRP is being put into practice, few were able to specify what an observer might see. Specifying the dimensions of CRP and its relationship to the heuristic had not been on Michèle’s mind. Even so, it was during the class discussion that the heuristic’s relevance to CRP became clearer. Jonathan, who had been tapped as a teaching assistant in an English language arts methods class, believed HiTCRiT could be modified to use with teacher education candidates, as a substitute for the standardized lesson planning tool used in the department. He piloted its use with the class the following semester. Utilizing HiTCRiT to explain research and existing practices as well as to assist teachers in creating culturally relevant instruction modified and shaped it, creating a more robust tool. Thus, the HiTCRiT came into being and came to inform our thinking and teaching practice. 相似文献