线粒体DNA（mtDNA）多态性与运动能力关系的研究进展

全面总结和分析了人类线粒体DNA(mtDNA)多态性及与人类运动能力关系和不同多态性与训练对人体运动能力适应性影响机制的研究成果。结果提示：mtDNA可作为良好的遗传标记,尤其是长1122bp的控制区在线粒体基因组中最具多态性、进化速率最高的区域,包含着线粒体基因表达的控制信息,其序列多态性分析以及与运动能力表型的关联研究,对于人类运动能力的分子遗传学探讨有重要意义和研究前景。但有关mtDNA多态性与运动能力之间关系的研究才刚刚起步,现有的研究结果还存在争议,仍需进一步深入研究。     

试文献检索教学与创新能力培养

结合教学实践，探讨了改革文献检索课程，使学生在信息网络化环境中增强自觉利用信息和知识的意，使该课程在培养学生创新能力方面发挥出重要作用。     

Correlates of verbally aggressive communication in adolescents

This investigation identifies demographic, media, and social correlates of verbally aggressive communication in adolescence. Mail surveys were completed and returned by 2,300 adolescents between the ages of 13 and 15. These adolescents were asked about the prevalence of verbal and physical aggression, the context in which it occurred, demographics, and the interpersonal and media influences in their lives. The results indicate that verbal aggression is widespread, that committing and experiencing verbal aggression is largely reciprocal, that there is a strong relationship between committing verbal and physical aggression, and that peer social influence and listening to violently oriented music are mildly related to verbal aggression in adolescents. These findings suggest more resources should be allocated to teaching adolescents to understand and control verbal aggression. Further, they provide important answers to many prevention and intervention programmatic questions, including context, content, and targeting concerns. Since the negative consequences of verbal aggression are severe and long lasting, decreasing this destructive communication behavior should significantly improve the lives of many adolescents. These and other practical implications are expanded upon and discussed.     

体育教学情境下学生学业求助行为的影响因素研究

以258名大学1、2年级的学生为被试，根据交互作用原理考察了在体育教学情境下学生学业求助行为的影响因素．结果表明：自我效能、内在动机、任务定向目标等动机因素和课堂环境均与学业求助行为呈显著正相关．自我效能、内在动机、任务定向目标、课堂环境对学业求助行为构成显著回归效应。     

学校体育实施终身体育教育的途径和方法

从新的体育课程标准入手 ,对终身体育者的标准、特征和影响终身体育因素进行了论述和分析 ,提出学校体育应从体育教学和课外体育活动等方面培养学生的终身体育意识和能力。     

Comparison of three web-scale discovery services for health sciences research

Objective

The purpose of this study was to investigate the relative effectiveness of three web-scale discovery (WSD) tools in answering health sciences search queries.

Methods

Simple keyword searches, based on topics from six health sciences disciplines, were run at multiple real-world implementations of EBSCO Discovery Service (EDS), Ex Libris''s Primo, and ProQuest''s Summon. Each WSD tool was evaluated in its ability to retrieve relevant results and in its coverage of MEDLINE content.

Results

All WSD tools returned between 50%–60% relevant results. Primo returned a higher number of duplicate results than the other 2 WSD products. Summon results were more relevant when search terms were automatically mapped to controlled vocabulary. EDS indexed the largest number of MEDLINE citations, followed closely by Summon. Additionally, keyword searches in all 3 WSD tools retrieved relevant material that was not found with precision (Medical Subject Headings) searches in MEDLINE.

Conclusions

None of the 3 WSD products studied was overwhelmingly more effective in returning relevant results. While difficult to place the figure of 50%–60% relevance in context, it implies a strong likelihood that the average user would be able to find satisfactory sources on the first page of search results using a rudimentary keyword search. The discovery of additional relevant material beyond that retrieved from MEDLINE indicates WSD tools'' value as a supplement to traditional resources for health sciences researchers.     

浅析斯坦贝克《人鼠之间》的连锁隐喻

《人鼠之间》是约翰·斯坦贝克的一部中篇力作。小说中一连串密切关联的隐喻对于主题的深化起到了举足轻重的作用。本文主要对作品标题、人物莱尼、死老鼠、老狗等几个关键性的隐喻进行探讨。     

古代格言的修辞特点探析

古代格言数量之众、蕴含哲理之深、修辞艺术之美、深入民间之久,在中国语言文化中独树一帜。它积极地利用各种修辞手段,从句子,声音,辞格等方面调整其修辞功能,使其社会功用与语言很好地结合。