现代足球比赛边路传中基本特征的分析研究

通过对16届世界杯足球赛决赛阶段60场120队次,边路传中的传球区域、传球目标区域及两者比例关系等技术指标的统计分析,探索现代足球比赛边路进攻中,边路传中的基本特征,研究结果表明,2、3区为最佳传中区域.A、C区是较理想的传中目标区.     

Peer-Based Supplemental Instruction in STEM: Differences in Effectiveness Across Transfer and Nontransfer Undergraduates

Although there is a large body of research on the effectiveness of supplemental instruction for college undergraduates, very little of it has focused on transfer students, who often confront additional sources of stress and historically perform more poorly than their native student counterparts. In this study, we investigated the effectiveness of a peer-based supplemental instructional program in general and organic chemistry at a large state university over a six-year period, while considering differences across transfer and nontransfer students. The results suggest that the supplemental instruction improved outcomes overall but that nontransfer students benefit to a greater degree than transfer students, in the form of higher grades and pass rates, from attending supplemental instruction. The results suggest that peer-based supplemental instruction is a useful method to improve undergraduate student performance in chemistry, but more research is needed on ways to enhance the effectiveness of interventions in improving the performance of transfer undergraduate students in STEM fields.     

The academic engagement of White and ethnic minority students in distance education

At UK institutions of higher education, the academic attainment of White students tends to be higher than that of students from other ethnic groups. A postal survey of Open University students found very little difference in academic engagement in those from different ethnic groups. The differences in pass rates and course grades remained statistically significant even when any effects of differences in academic engagement had been controlled. This is consistent with previous findings that quantitative variations in the attainment of students from different ethnic groups are not reflected in concomitant qualitative variations in their experience of higher education. The explanation for the attainment gap in ethnic minority students must be sought elsewhere than in the nature of their experience of higher education.     

个性化跨语言学术搜索技术研究

学术搜索引擎是一种行业化的搜索引擎,但因其缺乏个性化的服务,使得用户的学术文献检索效率低下,海量的数字学术资源得不到充分利用.本文使用Google翻译,研究基于机器翻译的中、英、俄、法和西班牙等五个语种跨语言学术检索.在跨语言学术搜索的基础上研究个性化检索技术,提出一种基于聚类的个性化信息检索方法:通过观察用户对搜索结果聚类的点击行为,生成并更新用户实时兴趣模型,采用余弦夹角公式计算用户实时兴趣模型与搜索返回结果的相似度,根据相似度大小,为用户提供个性化重排序的搜索返回结果.实验结果证明了提出方法的有效性.     

陇南白马人对传统文化传承之探究

陇南文县铁楼藏族乡白马流域的十多个寨子将具有奇特性、唯一性、垄断性和不可替代性的白马文化,传承得最完整、最丰富、最古朴,是甘肃特色文化的重要组成部分。陇南文县白马人由于特殊地理环境、护佑、较好物质基础支撑,人们生存客观需要和多种制度的有力保障等原因将古朴的传统文化传承至今。     

一类拟线性薛定谔方程的正解

考虑一类拟线性薛定谔方程的正解,由于该类方程所对应泛函不能定义在常用空间H1（RN）上并且嵌入是非紧的,这也导致了很难直接求解.因此利用变量变换在H1（RN）的径向空间上考虑方程的解,从而可以利用山路引理和极值原理证明所研究方程存在正解.     

单一和多种途径反馈对运动技能形成的影响

通过对两种练习方法———听觉信号反馈和听觉加视觉信号反馈在提高体育院校普修课学生长传球准确性的教学效果进行实验对比研究,以找出更好的提高体育院校普修课学生长传球准确性的练习方法。实验结果表明,听觉加视觉信号反馈的练习方法对长传球准确性的教学效果要好于听觉信号反馈的练习方法。     

篮球运动中的节奏调控

阐述运球、传球、投篮、防守、突破及进攻中节奏的作用，强调了节奏在篮球运动中的重要性，提出比赛中把握节奏的时机和方法。     

对足球比赛中传中球进攻战术的探讨

通过对29场高水平足球比赛中球的落点情况、实际效果以及不同落点的不同进攻战术的分析。认为中点包抄射门是足球比赛中得分的主要手段，前、后点是完成接应射门的主要区域。     

2004年欧洲杯足球赛接球失误的状态及原因统计分析

通过观察2004年欧洲杯足球赛的16场32队次的比赛录像,对各参赛队在比赛中的接球失误状态和失误原因进行分类统计与分析。认为在快速强对抗和中慢速强对抗状态下失误较多,与其它状态下的失误差异有显著性;失误的主要原因是在强对抗状态下的接球不到位、接球过大和接“上刀山”球;中慢速次强对抗和中慢速弱对抗状态下的接球失误高于快速次强对抗和快速弱对抗状态下失误。