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51.
敦煌版画的背景意义   总被引:1,自引:0,他引:1  
敦煌出土的佛教版画表现了佛教信仰的一种新方式,它与敦煌石窟艺术一脉相承,是敦煌艺术的组成部分之一,是科学技术与佛教艺术相结合的产物,在中国美术史和中国印刷科技史上都有十分重要的价值意义.  相似文献   
52.
For the past few years a discussion has been going on about the specific skills and knowledge a complete engineer should possess. Apart form this discussion, a separate debate has focused on the content of an engineer's education. This article is a combination of two joint papers (De Graaff and Ravesteijn 2000, Ravesteijn and De Graaff 2000) bearing on these respective subjects, presented by the authors at the SEFI 2000 conference in Paris. The demands from industry that engineers of the future will have to meet are summarized and related to characteristics of modern training methods. It is argued that a new view on the content of the engineer's education implies, at least to a certain extent, a new set of educational tools.  相似文献   
53.
在研发驱动的内生经济增长理论的框架内,对企业研发竞争行为和政府研发政策的最新研究进展进行了深入探讨,并结合我国产业现状指出政府为产业领先者提供补贴并对新的产业领先企业的利润征税能使社会福利达到最优。  相似文献   
54.
This year marks the centenary of the death of W. H. Fox Talbot, the inventor of the negative/positive process of photography. This article reviews his contribution to the development of photography in relation to that of other pioneers, notably Niépce, Daguerre, and Archer. It also considers the consequences for the development of photography in Britain of Talbot's strict adherence to his patent rights.  相似文献   
55.
关于风险投资者和投资管理机构的关系模型   总被引:2,自引:0,他引:2  
陈德棉  李刚  张玉臣 《预测》2001,20(6):52-53
由于信息不对称,风险投资管理机构存在很大的道德风险。本文通过风险投资者和投资管理机构之间的关系研究认为,使投资管理者的回报和基金收益挂钩和公布投资管理者的业绩信息,可以对投资管理者进行有效的激励和约束。  相似文献   
56.
For this study, information on Who Bullies Who was collected from 54 school classes with 918 children (M age = 11) and 13,606 dyadic relations. Bullying and victimization were viewed separately from the point of view of the bully and the victim. The two perspectives were highly complementary. The probability of a bully-victim relationship was higher if the bully was more dominant than the victim, and if the victim was more vulnerable than the bully and more rejected by the class. In a bully-victim dyad, boys were more often the bullies. There was no finding of sex effect for victimization. Liking reduced and disliking increased the probability of a bully-victim relationship.  相似文献   
57.
International Review of Education - This article examines the profile of prisoners who do not take part in formal education while being incarcerated (e.g. language or ICT courses) and the barriers...  相似文献   
58.
Research in Science Education - The first phase of this multiphase study involves modeling of college students’ thinking of friction at the microscopic level. Diagnostic interviews were...  相似文献   
59.
Purpose:To investigate whether blood flow restriction(BFR) without concomitant exercise mitigated strength reduction and atrophy of thigh muscles in subjects under immobilization for lower limbs.Methods:The following databases were searched:PubMed,CINAHL,PEDro,Web of Science,Central,and Scopus.Results:The search identified 3 eligible studies,and the total sample in the identified studies consisted of 38 participants.Isokinetic and isometric torque of the knee flexors and extensors was examined in 2 studies.Cross-sectional area of thigh muscles was evaluated in 1 study,and thigh girth was measured in 2 studies.The BFR protocol was 5 sets of 5 min of occlusion and 3 min of free flow,twice daily for approximately 2 weeks.As a whole,the included studies indicate that BFR without exercise is able to minimize strength reduction and muscular atrophy after immobilization.It is crucial to emphasize,however,that the included studies showed a high risk of bias,especially regarding allocation concealment,blinding of outcome assessment,intention-to-treat analyses,and group similarity at baseline.Conclusion:Although potentially useful,the high risk of bias presented by original stodies limits the indication of BFR without concomitant exercise as an effective countermeasure against strength reduction and atrophy mediated by immobilization.  相似文献   
60.
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