电动车能量再生技术

1　Introduction　Therateddistanceisoneofkeyfactorstolimitthedevelopmentofelectricvehicle (EV)sinceEVwasin vented .Itisawayforincreasingtherateddistancetoputtheadvancedenergyregenerationtechnologyintouse .Manyexperimentsprovethattheactualrateddistanceofaelectricscooterunderthecityroadsur roundingsisabout 35 - 45kmwhileitisabout 5 5 - 6 5kmunderthestandard proving ground .Moreover ,JapanToyotaalsoprovedthattherateddistancecouldbeincreasedby 2 0 %whenusingtheenergyregenera tionsysteminEV .Soi…     

Effective extraction of elastase from Bacillus sp. fermentation broth using aqueous two-phase system

INTRODUCTION Aqueous two-phase system (ATPS) is widely used in biochemistry and biotechnology for purifica- tion of proteins (Diamond and Hsu, 1992; Balasubramaniam et al., 2003), enzymes (Pan et al., 2001; Bim and Franco, 2000), amino acids (Li et al., 2002), antibiotics (Yang et al., 1994; Guan et al., 1994), nucleic acids (Ohlsson et al., 1978; Kimura, 2000), aroma compounds (Marco et al., 2000) and lactic acid (Planas et al., 1998). ATPS is mainly composed of two-incompatible p…     

二外日语教学新探

总结了笔在二外日语教学中的实践和探索，提出了二外日语教学在听、说、读、写、译五项基本技能方面全面发展的必要性和可行性。在课堂教学方面主要体现为合理的进度安排及多种教学法相结合。此外本提倡在语言教学中适当进行化背景的介绍，并针对英语专业的特点，提出通过中英日三种语言的对比来加深学生对日语的理解。     

武松报恩悲剧初探

用报恩思想表现武松的悲剧命运，是《水浒》人物描写的一大特色，武松的报恩思想是其悲剧的内在根源，支配了其一生命运失一过程，封建传统文化是产生报恩思想的基础，小生产意识和缺少人性呵护是报恩思想形成的原因，有恩于已的所有人都是报恩的对象，武松以结局表现了作者对报恩思想的否定。     

用磁流变液实现导磁材料机件表面的光整加工

磁流变液是未来应用最广泛的智能材料之一,它在无外加磁场作用下表现出良好的流体特性,在强磁场的作用下它的粘度会在毫秒级的时间内增加两个数量级以上,表现出类似固体的特性,一旦去掉磁场又立刻恢复液体的特性.这种可逆、迅速、易控的特点使磁流变液在机械工程中得到广泛的应用,其中包括表面光整加工,如将其用于光学镜片的表面研磨.目前其加工对象仅限于非导磁性材料,而现在绝大多数的机械零件的材料为导磁性材料.文章明确了磁流变液光整加工方法的主要优点;根据加工机理分析和初步实验研究,概括出将磁流变液用于导磁性材料表面光整时碰到的具体问题,并有针对性地提出了合理的解决方法.     

美术欣赏教学的"五字法"

美术欣赏，是一种审美情感的教育，它既能提高学生的审美能力，又能培养学生的创造精神，这种独特的教育功能早已被一些专家、学论证，然而，采取什么样的方法才能更有效地发挥其功能和作用呢?本从五个方面对美术欣赏教学的形式和方法进行了研究探索。     

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.     

学前教育对青少年成就发展的影响——基于CEPS数据的实证研究

基于中国人民大学提供的中国教育追踪调查数据,采用倾向得分匹配法,实证检验学前教育经历对青少年成就发展的现实影响,讨论“去小学”化的现实必要性。结果发现:接受学前教育和未接受学前教育的青少年在学业表现、家庭特征与个体特征等方面存在着一定的差异;Logit模型发现了家庭人力资本存量、经济资本以及家庭规模均对学前教育参与率的提升起到积极影响,但农村青少年的学前教育参与率相对于城镇要低2.3个百分点,显示出学前教育资源在城乡间的非均衡分布;倾向得分匹配法揭示了学前教育经历对青少年的学业表现具有正向影响,尤其是对语文和数学成绩的促进作用最为明显,但提前接触小学教育内容并不能帮助青少年赢在起跑线上。     

不确定中立型系统的鲁棒正实反馈控制

考虑一类含有范数有界参数不确定性和混合时滞的中立型系统的严格正实状态反馈控制问题,利用线性矩阵不等式(LMI),给出了状态反馈控制器存在的充分条件,使得对所有的参数不确定性,闭环系统是鲁棒稳定且扩展严格正实的;并得到了控制器的设计方法,数值例子表明了设计方法的有效性。     

恣意纵横的东方气象 --近观赵无极的艺术世界

赵无极是一位融合中西方艺术精华的当代抽象主义绘画大家。他的独特的艺术风格的形成,源自于他对传统中国文化的彻悟与对西方现代艺术的借鉴。赵无极的艺术历程给我们剖析了东西方文化结构在相悖的情景下而得以戏剧性结合的秘密。他的成就为当代志在探索中西结合绘画道路的中国艺术家提供了一个借鉴的可能。