Effects on high school students of teaching a cross-age alcohol prevention program

This study examined the impact on high school students who taught elementary students MADD's Protecting You/Protecting Me (PY/PM), an alcohol use prevention and vehicle safety program. High school students (N = 188) enrolled in a peer helping course completed surveys before and after teaching PY/PM, and a comparison group of peer helper students (N = 141) from matched schools completed surveys at the same times. Results indicated that, relative to the comparison group, those exposed to PY/PM gained knowledge of alcohol's effects, increased their perceptions of the risks of high levels of alcohol use, gained teaching skills, and showed less frequent episodes of binge drinking. No effects were found for attitudes toward future drinking, perceptions of the risk of low levels of alcohol use, alcohol use, or vehicle safety. This cross-age prevention program may be successful in changing high school students' knowledge, attitudes, and behaviors regarding high levels, but not low levels, of alcohol use.     

机械原理课程设计教学探索与实践

介绍了在机械原理课程设计中,通过运动方案的设计与评价,加强对学生创新能力和综合分析问题能力培养的实践与体会．     

青海婚俗中的媒妁文化浅析

青海的婚俗不仅异彩纷呈,而且文化内涵深邃。本文通过对青海汉、土、藏、撒拉等民族婚俗中的“谢媒”与“骂媒”风俗现象的分析,对媒的职业存在的利 问题作了探讨。     

大学英语教学与西方文化教育

大学英语教学与西方文化教育的关系,并不是一个新鲜的话题;但是,在大学英语教学过程中忽视西方文化背景教育的现象依然存在。重新认识西方文化的重要性,从教学实际出发,改进英语教学中西方文化教育的方法,是提高大学英语教学质量的一个关键所在。     

梁思成、林徽因与北京城市规划

新中国解放前夕 ,梁思成与林徽因便对共和国的文物保护工作做出了很大贡献。新中国成立后 ,北京城的许多重要建设都倾注了他们的大量心血。他们对北京城的建设规划提出了许多宝贵的意见 ,现在愈来愈被证实是正确的     

新世纪我国测绘事业的发展机遇与挑战

新世纪我国测绘事业面临新的机遇和挑战。建立数字地球是新世纪测绘科学面临的艰巨任务,我国测绘事业担负着繁重的历史使命,在基础理论研究、技术研究和应用研究方面都面临严峻挑战。     

从戴复古“不甚读书”的争论看南宋诗风的演变

从戴复古生前开始，对他是否读书的问题就存在两种截然不同的看法并引发争论。其实，争论出现的原因在于南宋诗坛风气的嬗变。“资书以为诗”和“捐书以为诗”这两种不同诗学主张的此消彼长，明显地影响着对戴复古评价的高低，并一直延续到后代。在江西派长期占据诗坛的背景下，社会上崇尚“资书以为诗”的风气。戴复古因从小失学而深感自卑，但他一直努力弥补以往学习的不足。随着江西派的衰落，崇尚晚唐诗风的永嘉四灵兴起，开始提倡“捐书以为诗”，此时戴复古所擅长的白描手法受到了社会的认可，读书多寡也不再被视为问题。但晚年的戴复古已经认识到江西派和晚唐派各自的利弊得失，从而提出上追大雅、宗法杜甫的主张。这正是他饱读诗书，转益多师，对前辈诗人反复比鉴后所取得的进步。因此，从戴复古一生的创作实践和诗学造诣看，他确实是腹有诗书的。     

ROBUSTNESS OF VARIOUS PRODUCTION CONTROL POLICIES IN SEMICONDUCTOR MANUFACTURING

This paper compares several different production control policies in terms of their robustness to random disturbances such as machine failures, demand fluctuations, and system parameter changes. Simulation models based on VLSI wafer fabrication facilities are utilized to test the performance of the policies. Three different criteria, namely, the average total WIP, the average backlog, and a cost function combining these measures, are used to evaluate performance. Among the policies tested, the Two‐Boundary Control policy outperforms the others.