首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   135215篇
  免费   2109篇
  国内免费   497篇
教育   92307篇
科学研究   16102篇
各国文化   2011篇
体育   10022篇
综合类   765篇
文化理论   1141篇
信息传播   15473篇
  2022年   656篇
  2021年   1287篇
  2020年   1896篇
  2019年   2683篇
  2018年   3186篇
  2017年   3506篇
  2016年   3531篇
  2015年   2715篇
  2014年   3757篇
  2013年   28029篇
  2012年   3254篇
  2011年   3657篇
  2010年   3231篇
  2009年   3469篇
  2008年   3252篇
  2007年   3044篇
  2006年   3293篇
  2005年   3151篇
  2004年   3445篇
  2003年   2762篇
  2002年   2549篇
  2001年   2391篇
  2000年   1950篇
  1999年   1813篇
  1998年   1616篇
  1997年   1637篇
  1996年   1793篇
  1995年   1536篇
  1994年   1512篇
  1993年   1514篇
  1992年   1548篇
  1991年   1448篇
  1990年   1434篇
  1989年   1364篇
  1988年   1222篇
  1987年   1150篇
  1986年   1176篇
  1985年   1456篇
  1984年   1282篇
  1983年   1277篇
  1982年   1259篇
  1981年   1174篇
  1980年   1163篇
  1979年   1262篇
  1978年   1213篇
  1977年   1120篇
  1976年   998篇
  1975年   809篇
  1974年   810篇
  1973年   782篇
排序方式: 共有10000条查询结果,搜索用时 329 毫秒
71.
Many western countries are paying increasing attention to the organization and administration of graduate studies. Such attention has developed from primary concerns about completion times, completion percentages, programme quality, and student quality, as well as secondary concerns about supervisors, funding, coursework, inter-organizational co-operation, and policies and practices of both universities and research councils. Using information about British graduate programmes as a basis, the article presents policy issues related to research councils, funding councils, and control, followed by discussion of the themes of the nature of programmes, supervision and evaluation, completion time, quality, and innovation. The final sections address several concerns and offer some suggestions.  相似文献   
72.
73.
74.
This article describes the Engineering Professors' Conference (EPC) approach to quality assurance for Higher Education Institutions, which is currently the only formalized alternative to British Standard 5750 'Quality Systems'. The EPC approach is based on principles of quality assurance and Total Quality Management which have been developed in industry. These ideas are briefly outlined, and an opinion expressed on the interpretation and application of BSS7S0 for HE. The EPC model is explained, illustrated with example elements taken from the EPC Specification and Guidelines for Quality Assurance in Higher Education. A top-down approach to the development of an institutional quality system is described, based on a quality policy statement. Areas of activity which have an important impact on the quality of education are identified, emphasising the quality assurance requirements of academic departments. Supporting and administrative quality system requirements are also described, as these also play an important role in the quality of education. Formal quality procedures and documentation in key areas are proposed.  相似文献   
75.
本实验对训练动物予以类固醇药物,发现其肌力增强,但工作时间缩短,肌肉断裂强度和能量吸收无改变。胫骨、跟腱、屈趾肌腱和膝内侧副韧带的某些生物力学特性受到不同程度的影响,使其在激烈运动中易于受伤。  相似文献   
76.
77.
78.
AMP激活的蛋白激酶(AMPK)不仅可以作为细胞水平的能量感受器,还可以通过细胞因子参与调节机体整体的能量消耗和能量摄人。运动等应激可以激活AMPK。参与调节骨骼肌葡萄糖代谢和脂肪酸氧化等能量代谢过程。运动训练可影响骨骼肌AMPK基因表达,进而参与到运动训练的机体适应机制。  相似文献   
79.
As a group, students with learning disabilities (LD) have social difficulties. One possible explanation for these difficulties is the unique way they process social information. Although students with LD may differ from their nondisabled peers in their social cognition, investigators have suggested the presence of subgroups within the population of students with LD who may differ in their social competence and, thereby, shed light on the source of the difficulties. The present exploratory study examined how two subgroups of students with LD in inclusive settings, students with high and low social status, perceive social situations. Using a sociometric technique, three students with LD receiving high social‐status ratings and three students with LD receiving low social‐status ratings were identified. A qualitative approach was used to gather and evaluate data from the participants and their teachers. Results suggested differences between the two subgroups in their (1) sensitivity to cues in the environment, (2) interpretation of social situations in relation to their own experiences, and (3) levels of self‐control. Implications of these findings for practice and future research are discussed.  相似文献   
80.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号