Dynamics of the martial arts high front kick

Fast unloaded movements (i.e. striking, throwing and kicking) are typically performed in a proximo‐distal sequence, where initially high proximal segments accelerate while distal segments lag behind, after which proximal segments decelerate while distal segments accelerate. The aims of this study were to examine whether proximal segment deceleration is performed actively by antagonist muscles or is a passive consequence of distal segment movement, and whether distal segment acceleration is enhanced by proximal segment deceleration. Seventeen skilled taekwon‐do practitioners were filmed using a high‐speed camera while performing a high front kick. During kicking, EMG recordings were obtained from five major lower extremity muscles. Based on the kinematic data, inverse dynamics computations were performed yielding muscle moments and motion‐dependent moments. The results indicated that thigh deceleration was caused by motion‐dependent moments arising from lower leg motion and not by active deceleration. This was supported by the EMG recordings. Lower leg acceleration was caused partly by a knee extensor muscle moment and partly by a motion‐dependent moment arising from thigh angular velocity. Thus, lower leg acceleration was not enhanced by thigh deceleration. On the contrary, thigh deceleration, although not desirable, is unavoidable because of lower leg acceleration.     

基于STM32的远程升级系统的设计

本文介绍了一种基于STM32芯片的远程升级系统的设计方案。简述了从数据下载线、客户端、服务器到数据库MYSQL设计的全部过程,并提供了客户端、服务器的通信细节分析,提供了升级操作的可靠性和便利性。     

全球化与族性认同

族性认同（ethnic identity）的增强是一个值得重视的当代民族现象，它的出现与世界的全球化背景有着必然联系。本对族性认同作了概念性解说，指出族性认同的增强有着全球化因素的支撑，它是个性的张扬，世界多样性的表现，同时也是民族过程(ethnic process)的反映。当代世界民族过程既是民族现象不断扩张和弥漫的过程，也是民族不断分解自己、泛化自己的过程。随着全球化的推进，这一现象仍将持续。     

Deliberative academic development: the potential and challenge of agency

ABSTRACT

In this paper, we explore possibilities and challenges for deliberative academic development. Deliberative academic development refers to a practice that engages members of the university in dialogue about its purposes, ways of organizing and leading higher education, as well as teaching and learning. The paper critically analyses data from focus group interviews with academic developers from four universities within two national contexts. Combining sociological conceptualizations of agency and the framework of ‘epistemic living spaces’, the paper offers insights into challenges and opportunities for deliberative academic development, as well as a framework for studying agency in other contexts.     

高职院校开设英语晨读课之探析

随着国际交往的日益频繁,英语作为国际交流语言的作用也日渐重要,英语口语也越来越受到重视。因此,口语教学已成为英语教学的重点。开设晨读课有利于创造英语氛围,有助于提升学习兴趣,是高职学生提高口语水平的有效途径之一。探讨如何通过选取晨读的内容、形式,如何加强晨读监管和考核等来改进晨读实施方法,促进晨读效果。     

The Independence of Research—A Review of Disciplinary Perspectives and Outline of Interdisciplinary Prospects

Minerva - The independence of research is a key strategic issue of modern societies. Dealing with it appropriately poses legal, economic, political, social and cultural problems for society, which...     

Popular Music

Brian Rust The American Record Label Book (New Rochelle, N.Y.: Arlington House, 1978— $20.00)

Bill Harry Mersey Beat: The Beginnings of the the Beatles (London: Omnibus Press/New York: Quick Fox, 1978—E2.50/$4.95, paper)

Mary Laverne Dimmick The Rolling Stones: An Annotated Bibliography (Pittsburgh: University of Pittsburgh Press, 1978—$7.95)

Judith Glassman The Year in Music: 1978 (New York: Crown Publishers, 1978—$15.95)

Lionel Salter The Illustrated Encyclopedia of Classical Music: A Guide to Composers and Recommended Recordings (New York: Crown Books (Harmony Books)/London: Salamander Books, 1978—$17.95/8.95)

Gerald Bordman American Musical Theatre: A Chronicle (New York: Oxford University Press, 1978—$35.00)     

Response to Reidun Tangen: insiders and relational problems

This paper reports the experiences of special education needs co‐ordinators (SENCOs) on the inclusion of pupils with a visual impairment (VI) in mainstream schools in Northern Ireland. A mixed method approach (postal questionnaire survey (n=113) and interviews (n=6)) was utilised to triangulate the findings. The results indicate an inverse relationship between school years and pupil numbers, with negligible numbers of pupils with a VI reported in higher level examination classes. They also reveal that, for health and safety reasons and due to problems in accessing text books, some schools discourage pupils with a VI from studying subjects such as technology and design, physical education and mathematics. While pupils with a VI are thought to enjoy the social aspects of school life (e.g., peer friendships), less is known about their ability to access a number of areas within the school, including lunchtime clubs and the dinner hall. These findings raise questions about the qualitative nature of the educational experience afforded pupils with a VI.     

The Relation between Reading Comprehension and Task‐specific Strategies used in Arithmetical Word Problems

The study was concerned with the relation between reading comprehension and task‐specific strategies used in arithmetical word problems. Two hypotheses were formulated in the study. H1 stated that subjects good at arithmetic as well as reading (Group 1) would emphasize deductive strategies to a greater extent than subjects in the remaining groups. H2 considered IQ to be a stronger predictor for subjects’ strategies in arithmetical word tasks than reading comprehension. Four groups of 9‐year‐old children with different competencies in arithmetic and reading were sampled for the investigation. An intelligence test (WISC) and three other tests, Mathematical tests 1‐3, were constructed and administered to the 20 subjects. The tests were used to examine subjects’ strategies in completed task solutions. The findings indicated that great similarities existed between Groups 1 (good at both skills) and 2 (good at arithmetic and poor at reading) as to strategies used in addition and subtraction problems. Whereas subjects in groups 1 and 2 mainly used deductive strategies, those in Groups 3 (good at reading and poor at arithmetic) and 4 (poor at both skills) rather used procedural strategies in solving the problems. Concerning strategies applied in multiplication and division tasks a more diverse pattern of strategies was revealed in all of the four groups, but the majority of subjects emphasized deductive strategies. Multiple regression analyses of the data indicated strong linear relationships between the predictors and the criteria used in the analyses. However, IQ was the only significant single predictor found in the regression analyses. H1 had to be suspended, but H2 could not be rejected.     

A Strategy for Assessing Problems in Word Recognition among Dyslexics

The article argues for the importance of studying word‐recognition strategies in the assessment of dyslexia. The consensus model of word recognition in cognitive neuropsychology, the dual‐route model, is critically discussed in the light of attacks from computational models in modern connectionism. Despite the criticism, it is argued that a dual‐route model can serve important functions in the context of dyslexia assessment. We propose a specific version of the dual‐route model from which we construct a series of tasks for diagnosing subprocesses in word recognition. A computer‐based test battery is described, involving oral reading tasks, lexical decision, rhyme detection, letter categorization, visual analysis, naming, and semantic categorization. Latencies and accuracy scores are recorded. The usefulness of this assessment approach is demonstrated in two case studies of 15‐year‐old dyslexic boys.