The effect of adolescents' sports clubs participation on self-reported mental and physical conditions and future expectations

Abstract

Sports clubs create conditions for people of all ages to pursue a healthy lifestyle through exercise in sports and attend to constructive pedagogical work which creates much value for society. This study investigates the relationship between adolescents' sports clubs participation and self-reported mental and physical conditions and future expectations. The participants were 10,987 pupils in the final three years of their compulsory education in Iceland (aged 14–16 years). The participants completed questionnaires administered to students in the classroom relating to health and behaviour. The results indicate that participation in sports clubs influences adolescents positively; adolescents who work hard at sport not only believe they are in better mental and physical condition, they also believe they can succeed in other areas such as their studies. Sports clubs promote positive influence on adolescents' mental and physical conditions and their future expectations toward work and happiness. It can be concluded that participation in organised sports clubs affects the participants in a positive way.     

湖北省男子竞技网球发展的困境与出路

采用文献资料、问卷调查、访谈、统计分析等方法,分析湖北省男子竞技网球运动员的培养模式及体制,找出阻碍男子竞技网球发展的因素,提出适合我国男子竞技网球发展的新模式。     

高校师范生耐力素质状况与地理区域关系调查研究

通过对中国高校师范生耐力素质与地理区域关系的调查研究,揭示中国高校师范生耐力素质状况与地理区域分布规律,结果显示地理区域的分布是影响师范生耐力素质的重要因素之一,不同的地理区域的学生其耐力素质的状况也大不相同。建议各高校的体育教育从学生的生源地的角度出发,结合实际情况,从而达到增强学生耐力素质的目的。     

阳光体育背景下上海市校园足球课外活动的现状与对策研究

本文以阳光体育背景下上海市校园足球课外活动的现状和对策为研究对象,采用文献资料法、专家访谈法、问卷调查法、数理统计法进行探究,得出以下结论:上海市校园足球课外活动的开展情况不容乐观;管理组织机构职责不明确;计划方案不配套,难以落实;活动的组织者和辅导者专业素养不足;课外活动的内容不系统、针对性不强;组织形式单一,保障体系不完善。基于此,提出相应建议:进一步完善、健全校园足球课外活动的管理体制;进一步完善市、区、校三级课外活动方案;合理制定安排校园足球课外活动内容;进一步完善、健全保障体系;校园足球课外活动的组织形式应丰富多样。     

Application of functional derivatives to analysis of complex systems

The application of the functional derivatives to the mathematical modeling of complex systems is studied here. The connection of functional derivatives with total differentials in Banach spaces is shown. Local and global existence theorems for the linear equations in total differentials are proved. Consequently, a total integrability conditions are derived for the case of linear equations with the functional derivatives. Some illustrative examples are included.     

Stabilization and passification of distributed-order fractional linear systems using methods of preservation

This paper studies the stabilization and passification of a class of distributed-order linear time-invariant systems, by using methods of preservation in the frequency domain. Results about preservation of stability and passivity of classical linear time-invariant systems are extended to one more general family of matrix functions. Based on these results, a new approach to the problems of stabilization and passification of distributed-order linear time-invariant systems is presented. Also a result that extends the known techniques for pole placement of classical linear time-invariant systems to the new class of distributed-order linear time-invariant systems is given. Examples are given to show the validity of theoretical results.     

A Multidimensional Analysis of the Disability Digital Divide: Some Evidence for Internet Use

Over the last few years, information and communication technologies have become an essential part of daily life, affecting education, employment, and leisure, among other activities. Nonetheless, many individuals still reap few or no benefits from these technologies, and there are resilient gaps in their use. Within this larger context, the authors examine the Internet digital divide between people with and without disabilities from a multidimensional approach. Rather than analyzing the gap in terms of “haves” and “have-nots,” a range of Internet-related dimensions—affordability, motivation and attitudes, skills, usage, and others—is taken into account.     

基于内容分析法的国际环保非政府组织运行机制研究

在分析国际环保非政府组织研究现状的基础上,从组织治理机制、活动机制、传播机制、资金来源及分配机制、人员构成机制等5个方面对18个国际环保非政府组织进行运行机制研究。结果显示:国际环保NGO都是以环境或某一特定领域的研究为基础,以自然与环境的可持续发展为目标的组织;其开展活动的内容和方式多样化;传播方式及途径多种多样;基金来源各不相同,基金会是主要资金来源;在组织的人员构成方面,不同背景、不同宗旨的组织人员构成有很大的不同,以研究为主的组织其科学家、学者占多数,而以活动宣传为主的组织其志愿者占人员构成的大部分。     

基于单威胁分析的高校综合信息安全风险评估方法研究

依据资产、脆弱性、威胁等风险评估基本要素,提出一种基于Markov方法、以威胁为核心的高校信息安全风险评估模型。通过运用Markov,德尔菲集体讨论法,层次分析法等方法得到威胁发生的概率、威胁的后果属性、属性值及其权重,进而计算出威胁指数。利用威胁指数对风险进行排序,为制定有针对性的高校信息安全风险管理策略提供科学的依据。并着重对不同方法选取的初始概率值对最终结果影响进行了比较分析,发现初始概率对最终的结果影响很大。