微信红包随机金额生成算法模拟及应用

构造了微信红包随机金额的模拟算法,并验证了模拟算法的有效性。通过模拟算法,产生了大量微信红包随机金额数据,分析这些数据表明:(1)微信红包随机金额呈正态分布,是在红包份数较少的情况下,表现出的一种巧合,在红包份数较多的情况下,随机金额并不符合正态分布;(2)对一个微信随机红包,概率上,每个人抢到的红包金额是相等的,即抢红包的先后次序对抢到金额的多寡没有影响;(3)对一个微信随机红包,越晚产生的随机金额,其波动范围越大,即先抢红包的人,抢到平均金额的可能性比较高,后抢的人,要么抢到较小的金额,要么抢到较大的金额。     

浅析复杂材料的提取练习效应

提取练习效应具体指学习某一内容后,进行测试比再次学习的记忆保持效果更好,即使测试后没有反馈也依然存在。研究发现对词语、篇章及技能等类型的学习都存在提取练习效应。但近年来一些研究发现复杂材料不存在提取练习效应。本文综述了有关复杂材料不存在提取练习效应的实验,并讨论了复杂材料没有出现提取练习效应的内部原因。     

关于青年科学基金的作用及优化资助政策的思考

青年科学基金是国家自然科学基金会专门设立的,用于资助35岁以下的青年科研人员独立开展科学研究。从青年科学基金的设立、实施近20年的绩效出发,初步探讨了青年科学基金的作用、存在的问题,提出了今后青年科学基金改进资助方式、提高资助效率的政策建议。     

Learning styles in engineering education: the quest to improve didactic practices

This article discusses a dilemma that engineering educators encounter when attempting to develop pedagogical methods: that of finding efficient and scientifically valid didactic practices. The multitude of methods offered by educational consultants is perplexing. Moreover, the popularity of commercially offered solutions such as learning styles testing makes them appear attractive. The study presents one case of application of learning styles, the consequent problems and evaluation of results. It concludes that the use of learning styles is not supported by current pedagogical theories. Practices to foster interdisciplinary understanding between learning sciences and engineering are proposed in order to improve engineering education, most notably collaborative projects between university departments.     

Educational Research for Policy and Practice in Japan – With Particular Reference to Youth Education

Based upon the Fundamental Law of Education, Japanese school education system has long been a source of pride for the country as a result of the high school participation rate, the homogeneity of compulsory education throughout the country. However, the confidence of the people in its schools is now showing severe signs of strain and fatigue. In recent years, there have been many reports about the growing seriousness of a number of educational problems having to do with young people in their childhood and adolescence. Since the mid-1970s, a number of problems have been highlighted. They include violent behavior, juvenile crimes, bullying, refusal to attend school, dropping out at secondary level of education, and corporal punishment. Against the above background, based on recommendations from such advisory bodies as the Central Council for Education and the National Commission on Education Reform, the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) has adopted a range of policies and launched a series of educational reform programmes. For instance, what is called “Rainbow Plan”, based on the final report submitted by the National Commission on Education Reform, provides the country with basic guidelines for the educational reform in the near future. Roles of educational research for making policies have been of significance. Research initiated by the National Institute for Educational Policy Research (NIER) and the National Federation of Educational Policy Research Institutes (NFERI) is an example of contributions to the development of educational qualities in the country. This revised version was published online in July 2006 with corrections to the Cover Date.     

渐开线圆柱齿轮精度的计算机辅助设计

该文介绍渐开线圆柱齿轮精度的计算机辅助设计及计算的有关问题，对提高齿轮精度设计的准确度及其合理性有一定的实际指导意义。     

An international comparison using a diagnostic testing model: Turkish students’ profile of mathematical skills on TIMSS-R

This study illustrates how a diagnostic testing model can be used to make detailed comparisons between student populations participating in international assessments. The performance of Turkish students on the TIMSS-R mathematics test was reanalyzed with a diagnostic testing model called the Rule Space Model. First, mathematical and cognitive skills (‘attributes’) measured by the test were determined. One hundred sixty-two items were coded in terms of their attribute involvement, creating an incidence matrix—the Q-matrix. Using the Q-matrix and the student response data, each student’s attribute mastery profile was determined. Mean attribute mastery levels of Turkish students were computed and compared to those of their American peers. It was shown that Turkish students were weak in algebra and probability/statistics. They also demonstrated poor profiles in skills such as applying rules in algebra, approximation/estimation, solving open-ended problems, recognizing patterns and relationships, and quantitative reading.

中华全国基督教协进会与抗战时期难童救济

抗战时期,难童作为一个特殊的群体引起了上至国民政府,下至各种民间组织的积极关注,难童救济逐渐展开。中华全国基督教协进会作为一个在华各差会的协调机构,发起全国四十余城的战时难童救济事工,成为各种难童救济组织中一股特殊的力量,也是其在华慈善事业的一个重要组成部分。     

留洋学者与南雍学术

在南京高等师范学校、东南大学时期,学校的学术研究极为活跃。究其原因,主要是占全校师资三分之二的留洋学者发挥了中坚作用。南高、东大作为“中国科学社的大本营”,“展开了中国科学的奠基工作,成为中国科学发展的一个主要基地”。以留洋学者为骨干的“学衡派”主张“昌明国粹,融化新知”;参与创办《新教育》,为中国教育界开辟了一条研究、借鉴西方教育的重要渠道;竺可桢、熊庆来、秉志、茅以升、胡刚复等一批科学大师将西方现代科学引进国内。     

英语语言测试的批判理论分析

本文根据批判理论的观点对英语测试,特别是美国TOEFL和英国IELTS进行了历史回顾和现状分析,结果表明:影响英语测试的因素除语言学、语言教学和语言测试理论外,也受到社会政治和经济因素的制约。国外外语测试都是在一定的历史背景下发展起来的,都有其特定的历史条件和社会需求。