中外优秀男子跳远运动员起跳效果差异致因的研究

通过中外优秀男跳远运动员起跳技术特征的对比分析,对导致中外运动员起跳效果差异的原因进行了探讨。我国运动员起跳支撑缓冲能力差、起蹬时机晚、摆动速度小是主要致因。     

Using Mixed-Methods to Examine Teachers' Attitudes to Educational Change: The case of the Skills for Life strategy for improving adult literacy and numeracy skills in England

This paper reports on a longitudinal study that examines how a national reform introduced in England in the field of adult literacy, language, and numeracy is affecting teachers. The paper focuses on the use of a mixed methodology to explore teachers' attitudes to the reform and how these change over time. The quantitative strand includes the construction and use of a Likert-type instrument for measuring the attitudes of a panel of 1,500 teachers. The qualitative strand builds on the quantitative results and includes focus groups and in-depth interviews with a subsample of teachers in the panel. As the study is still in its initial phase, the purpose is not to present findings, but to discuss how quantitative and qualitative evidence can be combined in evaluation research.     

空前机遇 严峻挑战 创新发展——论高等继续教育的科学发展

在"为全面建成小康社会而奋斗"的伟大进程中,为了实现"建设全民学习、终身学习的学习型社会"的社会建设目标,中央做出"加快发展继续教育"的战略部署,这为我国高等继续教育带来空前的发展机遇,同时也提出了严峻的挑战。高等继续教育要肩负使命,迎难而上,深化改革,创新发展。     

Different ways in which students handle chance encounters in the explorative setting of a dice game

The purpose of this study is to investigate the ways in which Swedish seventh grade students (12 and 13 years old) handle chance encounters. Four groups of students working in pairs participated in the study. In the group discussions, which were tape-recorded and fully transcribed, the students were encouraged to explore strategies for winning a specifically designed dice game based on the sum of two dice. The dice game included four different set-ups of dice designed to bring to the fore different aspects of probability modelling and to offer the student the opportunity to encounter small differences in the mathematical structure of the sample space and of the probability distribution between the four different set-ups. The study describes strategies that the students use when confronted with these different set-ups, what their activities imply in terms of resources in handling random phenomena and what the dice game offers in terms of opportunities for learning probability. In order to explain such meaning-making processes the students’ activities are viewed from a perspective that takes into consideration how the students’ understanding varies with their interpretations of the situation they are confronted with, i.e., how they contextualize the different set-ups of the dice game. The results show how the students, during the course of the game, reorganize their interpretations of the mathematical content confronting them, and how a variation of guiding principles becomes the object of exploration. Approaches of extremes and a number model are described as a means for the students to identify and assign probabilities for the total of two dice.     

机会发现理论对推荐系统的改进

文章分析推荐系统的现状和存在问题,引入关注动态变化、发现隐性关联和弱信号的机会发现理论,依次从收集用户信息、掌握用户兴趣变化和匹配资源方面,探讨机会发现理论对推荐系统的改进。通过改进兴趣模型、建立自适应推荐模块、提供集成推荐等措施,提升推荐系统效率。     

试论21世纪高校图书馆缩小差距的契机与对策

21世纪，图书馆进入一个全新的数字化、网络化的新时代，同时也给高校图书馆提高层次和档次带来契机，文章就加快缩短图书馆间的差距的契机和对策进行了探讨。     

波普尔"物理非决定论"的含义辨析--关于"因果与机遇、决定论与概率"几种著名观点之比较

波普尔是一个“物理非决定论”者。他的“非决定论”有两种意义，一是非严格的决定论，一是绝对的偶然论。波普尔的非决定论思想，无论对于物理学哲学，还是生物学哲学研究，都富有启发性价值。     

科技企业技术创新的机会发现与风险识别

探讨科技企业技术创新的各种机会，以及科技企业在进行技术创新过程中如何进行风险识别与风险防范．