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   125655篇
  免费   1910篇
  国内免费   239篇
教育   86947篇
科学研究   13907篇
各国文化   2081篇
体育   9941篇
综合类   174篇
文化理论   1128篇
信息传播   13626篇
  2022年   543篇
  2021年   972篇
  2020年   1711篇
  2019年   2653篇
  2018年   3274篇
  2017年   3556篇
  2016年   3567篇
  2015年   2420篇
  2014年   3293篇
  2013年   28101篇
  2012年   2538篇
  2011年   2952篇
  2010年   2467篇
  2009年   2695篇
  2008年   2543篇
  2007年   2305篇
  2006年   2506篇
  2005年   2495篇
  2004年   3168篇
  2003年   2469篇
  2002年   2271篇
  2001年   2185篇
  2000年   1836篇
  1999年   1702篇
  1998年   1523篇
  1997年   1592篇
  1996年   1746篇
  1995年   1552篇
  1994年   1515篇
  1993年   1509篇
  1992年   1596篇
  1991年   1499篇
  1990年   1476篇
  1989年   1423篇
  1988年   1282篇
  1987年   1220篇
  1986年   1142篇
  1985年   1334篇
  1984年   1226篇
  1983年   1120篇
  1982年   1123篇
  1981年   1045篇
  1980年   985篇
  1979年   1130篇
  1978年   1070篇
  1977年   987篇
  1976年   890篇
  1975年   726篇
  1974年   730篇
  1973年   707篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
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   
73.
Continuous observation of the physical activity of 56 preadolescent children was conducted in four regions of England from October 1988 to July 1989. Observations were undertaken during school break times, lunch times, and physical education lessons, as well as during the children's free time. Of total time observed, the children spent 32.4% of it engaged in moderate to vigorous physical activity (MVPA). Children were shown to be most active during school breaks and least active during free time at home. However, it is thought that cardiorespiratory benefits are best achieved by participation in sustained periods of MVPA. Only 8 (14%) of the 56 children were observed to participate in MVPA for sustained periods of 20 min or longer. A random sample of 55 physical education lessons was observed. Only 6 children engaged in MVPA for sustained periods of 5 min or more, and no children participated in MVPA for 10 min or longer. The implications of these results are that, although the children engaged in a reasonable amount of MVPA, it may not have been sustained for periods of sufficient length to produce a cardiovascular training response. Consideration is given to ways of promoting lifelong involvement in physical activity.  相似文献   
74.
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   
75.
76.
77.
78.
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   
79.
80.
What is the rationale for adapting an existing testing system instead of developing your own? What are the limitations of MicroCAT? What has to be modified in order to meet local needs and to realize the potential of adaptive testing in the context of an existing testing system?  相似文献   
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