Relationships between cardiorespiratory fitness,inhibition, and math fluency: A cluster analysis

ABSTRACT

This study identified clusters of adolescents who share similar cardiorespiratory fitness levels and analysed the relationships between cardiorespiratory fitness, inhibition, and math fluency in each of the clusters. The subjects were 490 high-school students aged 10–16 years. The mean age was 13.82 years (SD = 1.12). Latent class analysis identified three clusters with high, medium, and low levels of cardiorespiratory fitness. The high-fitness cluster achieved higher scores in inhibition and math fluency than the low-fitness cluster. Path analysis revealed that the influence of cardiorespiratory fitness on inhibition was non-existent in the three clusters. The effect of inhibition on math fluency was positive and significant in all three cardiorespiratory fitness levels. Cardiorespiratory fitness had a direct, positive, and significant effect on math fluency only in the high-fitness cluster. Therefore, a high level of cardiorespiratory fitness is a significant determining factor in the explanation of math fluency. These results indicate that inhibition does not mediate the relationship between cardiorespiratory fitness and math fluency. However, the benefits of cardiorespiratory fitness affect math fluency, which has important implications for the educational environment and the teaching/learning process.     

对奉化市高中生课外体育活动现状的调查分析

课外体育活动是学校体育课的延伸,它既是校外课余活动的组成部分,又是学校体育工作的重要组成元素之一。课外体育活动能够直接影响学生的身心健康,是对学生自觉、自主体育锻炼能力的培养过程,同时也是为终身体育打下基础和落实《全民健身计划纲要》的需要。通过实地考察、问卷调查、文献资料和访谈等研究方法,对奉化市高中生参加课外体育活动的认识态度、活动项目、锻炼时间、活动的场地器材以及课外活动管理等方面进行了调查分析,为继续深化奉化市高中学校体育改革提供参考依据。     

武术课堂教学气氛微探

武术是中华民族的国粹,具有极强的生命价值和娱乐、观赏、竞技等价值功能。为了武术能更好地在学校体育中发挥它的价值功能,使武术成为一项学生深受喜爱的运动项目。文章运用文献资料法、观察比较法等研究方法,对影响武术课堂气氛的因素进行了探讨和研究,旨在为我国学校武术教育工作者提供参考,以提高武术的教学质量,增强武术学习效果。     

戏剧《欲望号街车》中的象征主义和表现主义

《欲望号街车》中,剧作者田纳西·威廉斯采取一些象征主义和表现主义的手法,以富有诗意的对话,表现人物的内心,反映了文化碰撞和阶级碰撞,表现了幻想与现实、文明与野蛮之间的冲突。     

树立教育理念 转变教育角色——论班主任如何适应新课改下的教育要求

新课程改革在我国迅猛推进,在新课改中班主任如何才能适应新的教育要求是每一个教师应该思考的问题。文章从教育理念的更新和班主任教育角色的转变两个角度对此进行了探讨。     

基于辍学研究的电大课程教学反思——以“变化中的英语”课程为例

本文基于电大辍学归因研究中的学习负荷问题展开讨论。调查显示,学习负荷过高造成了许多电大学生在学习道路上的无功而返,而学习的高负荷是由课程难度与学生学术水平之间的落差所造成的。本研究旨在通过对电大课程教学过程的审视,探究其学术支持服务手段的有效性。本研究以2011年3-6月上海电大A分校2010春英语专业本科层次"变化中的英语"课程教学为个案,通过面授课堂观察、课程形成性考核记录、网上教学记录、课程期末考试成绩聚焦课程教学效果。研究结果显示,电大的课程教学支持服务手段仍停留于传统教学模式,而作为重要学习辅助手段的网上学习,其形式意义占据和弥漫于抽样所在班级师生的观念中,导致学习支持的可获得性受到制约;同时,由于任课教师在电大体制下被层层嵌于一个庞大的系统之中,教师的能动性在改善课程教学效果时会受到一定程度上的限制;第三,在多方原因的共同作用下,现行教学模式下学生的课业表现与预期课程教学目标之间存有潜在的些微差距,会在一定程度上影响任课教师对自身课程教学的判断和调整。改变这种状况,电大教学组织制度的变革和对教师支持服务力度的加强势在必行。     

The Meaning of Urban Violence in Africa: Bulawayo,Southern Rhodesia, 1890–1960

Until recently the abundant literature on South African urban history has seen violence in towns and cities in terms either of anti-colonial protest or of labour consciousness. The Truth and Reconciliation Commission defined the urban violence with which it was concerned as exclusively political. More recently, however, questions of spatiality, township culture, generation, and gender have offered alternative or supplementary explanations.

This article moves from the South African historiography to the less well known history of Southern Rhodesian towns and townships. In particular it focuses on Rhodesia's main industrial centre, Bulawayo. Between 1929 and 1960 there were four dramatic events in Bulawayo which involved varying degrees of violence. These were the ‘faction fights' of December 1929; the railway strike of 1946; the general strike of April 1948; and the so-called zhii riots of 1960. There have recently been authoritative analyses of the 1946 and 1948 strikes. This article therefore concentrates on the events of 1929 and 1960.

The 1929 ‘faction fights' have been claimed for political economy by a classic article which sees them essentially as a response to changing patterns of colonial labour exploitation; the 1960 riots have been claimed as the first achievement of confrontational African nationalism in Southern Rhodesia. This article argues that an alternative explanation can be found in internal African struggles for dominance of an emerging black urban culture. It analyses the 1929 violence as a struggle between ‘stylish’ young labour migrants and a longer established township elite. It analyses the 1960 riots as a ‘war’ between the township poor and the newly prosperous traders and rentiers. Both episodes greatly complicated the prospects for a unitary urban nationalism or for effective and combined labour action.     

高校班级学风建设的探索与实践

加强班级学风建设工作，营造良好的班级学习风气，是形成优良校风的基础，是保证教育质量，培养高素质人才的重要前提，班级学风建设也是高校班主任工作的核心内容之一。     

Stability and dissipative analysis for a class of stochastic system with time-delay

This paper deals with the stability and dissipative problem of a class of stochastic hybrid system. The system under study involves Markovian jump, impulsive effects and time delay, which are often encountered in practice and are the sources of instability. Our attention is focused on analysis of whether the stochastic hybrid system with time-delay is stochastically asymptotically stable and strictly (Q, S, R) dissipative. By introducing an extra artificial time instance, the equivalent system is obtained and the sufficient conditions are derived by using linear matrix inequality (LMI) techniques. The main results of this paper unify the existing results on H_∞ control.     

浅谈新时代大学班主任班级管理艺术

学生成长的摇篮就是班级,学生大部分时间都是在学校中度过,因此可以说班级是学生的第二个家.只有将班级建设好了,才能帮助学生更好地成长,进而为社会培育出优秀的人才.大学班级的负责人就是班主任,因此班主任在对班级进行管理时,需要全方面管理学生的思想与作风、学习与健康.文章从新时代大学班主任的工作着手,深入探讨了该时期大学班主任对班级的管理工作.