中国留学生使用美国图书馆的困难与对策

中国留学生使用美国图书馆的困难与对策刘子明著宋登汉摘译（咸宁师范专科学校）２０世纪７０年代以来，美国高校的外国留学生不断增加，约每十年就翻一番。留学生来自１８０个国家和地区。改革开放以后，我国通过各种途径在美学习的留学生逐年上升。１９８９年的一份调查...     

建设用地节约集约利用的制度创新和理论解释——以广东省佛山市“三旧”改造为例

以新制度经济学的相关理论为基础,构建建设用地节约集约利用制度创新的理论分析框架,并结合广东省佛山市联滘地区的具体案例,从外部环境变化和集体行动两方面揭示"三旧"改造制度创新的激发和实现机制。研究结果表明:土地要素相对价格、产权结构、政策法律限制和集体信念等外部环境的变化导致原有制度安排变得不相适应,诱使相关行为主体以自身利益最大化为原则对制度安排进行修正,由此产生了低效存量建设用地二次开发的制度创新需求;同时,地方政府、开发商、村集体(村民)三大行为主体通过集体行动进行利益调整和再分配,最终达到一种相对稳定的均衡状态,最大限度地减少了制度变迁成本,有效推动了"三旧"改造的实现。     

Experimental Investigation into Magnetorheological Damper Subjected to Impact Loads

A good mechanical model of magnetorheological damper (MRD) is essential to predict the shock isolation performance of MRD in numerical simulation. But at present, the mechanical models of MRD were all derived from the experiment subjected to harmonic vibration loads. In this paper, a commercial MRD (type RD-1005-3) manufactured by Lord Corporation was studied ex-perimentally in order to investigate its isolation performance under the impact loads. A new me-chanical model of MRD was proposed according to the data obtained by impact test. A good agreement between the numerical results and test data was observed, which showed that the model was good to simulate the dynamic properties of MRD under impact loads. It is also demon-strated that MRD can improve the acceleration and displacement response of the structure obvi-ously under impact loads.     

基于课程群视角的应用型高校经济学教学改革

应用型高校的课程设置和教学内容多沿袭研究型大学的做法,无法凸显大学生实践动手能力和应用技能的培养。笔者以应用型商学本科人才培养体系中的经济学教学为例,提出以课程群建设为抓手开展教学改革,即通过综合的、一体化和系统的培养方式,实现经济学课程知识的调整和体系的贯通,将商学专业学生未来应具备的能力与具体的课程知识结合起来,并全方位突出实践教学环节。为实现以上目标,笔者还就教学资源的重新整合、教学和考核方式的多元化以及通过教师科研推动实践教学等方面提出具体的课程群建设措施。     

绿柱虫γ-内酯二萜对脑缺血的保护作用

绿柱虫γ-内酯二萜(简称C)显著降低脑缺血组织脂质过氧化产物丙二醛的含量,提高超氧化物歧化酶活性,从而发挥其对脑缺血再灌注损伤之脑组织的保护作用。对脑组织的保护作用还与它能显著抑制血小板聚集有关。结果表明,C对缺血脑组织的保护作用可能在于它能拮抗Ca~(2 ),从而减轻再灌注时Ca~(2 )所造成的损伤。     

对新编《田径》教材中几个问题的探讨

教材出版是一项非常严肃而又细致的工作。教材内容要力求科学、准确、系统、直观。本文认为新编《田径》教材跳跃技术原理不够完善,指出了切入差计算和抢道线的错误,以及中学田径教材教法分析重点不突出。     

Between the prescribed and the lived in physical education lessons

This study examines physical education (PE) curriculum development in an elementary school. Our goal was to understand the daily construction of a curriculum. We sought to analyse the theoretical and methodological framework and documents that a PE teacher uses each day while putting a curriculum into practice (lived curriculum). The data collection instruments included participant observation, interviews and document analysis. The analytical process revealed the influence of internal and external factors that affect both the authorship and the autonomy of a teacher working on the daily construction of a lived PE curriculum and that create tensions, struggles and conflicts.     

我国青年女足运动员在比赛与训练中活动距离的比较分析

通过对我国青年女足运动员在训练中的活动距离进行测试,将训练课的活动距离与比赛的活动距离加以对照和比较,结果表明,训练课的活动距离明显低于比赛的活动距离,说明训练课的活动距离不能满足比赛的需求,有待于改进和提高。     

LOGO!在《工厂供电》课程中的应用

文章提出了用LOGO！对《工厂供电》课程中双电源互为备用控制电路进行控制的方案，设计出了硬件接线图、程序状态转移图和逻辑图。     

知识经济与县市级图书馆

文章阐述了在知识经济时代县市级图书馆所面临的挑战及应担当的社会角色,指出县市级图书馆应面对现实,深化改革,发挥图书馆的优势,在知识经济时代,作出自己特有的贡献.