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   7727篇
  免费   116篇
  国内免费   20篇
教育   5387篇
科学研究   788篇
各国文化   64篇
体育   748篇
综合类   8篇
文化理论   81篇
信息传播   787篇
  2023年   49篇
  2022年   79篇
  2021年   119篇
  2020年   210篇
  2019年   325篇
  2018年   396篇
  2017年   422篇
  2016年   353篇
  2015年   254篇
  2014年   296篇
  2013年   1422篇
  2012年   235篇
  2011年   223篇
  2010年   172篇
  2009年   159篇
  2008年   172篇
  2007年   188篇
  2006年   146篇
  2005年   107篇
  2004年   121篇
  2003年   113篇
  2002年   89篇
  2001年   123篇
  2000年   146篇
  1999年   102篇
  1998年   86篇
  1997年   71篇
  1996年   77篇
  1995年   56篇
  1994年   57篇
  1993年   44篇
  1992年   83篇
  1991年   79篇
  1990年   68篇
  1989年   69篇
  1988年   79篇
  1987年   61篇
  1986年   80篇
  1985年   73篇
  1984年   57篇
  1983年   71篇
  1982年   53篇
  1981年   40篇
  1979年   53篇
  1978年   50篇
  1977年   40篇
  1976年   44篇
  1975年   31篇
  1974年   32篇
  1973年   36篇
排序方式: 共有7863条查询结果,搜索用时 281 毫秒
11.
12.
13.
14.
15.
16.
The article sets off with a brief summary of the history of appraisal and disposal of records as processed at the National Archives of Iceland (NAI) since its establishment in 1882 to present times. Rules on appraisal and disposal of records introduced in 1900, 1911, and 1916 were ignored and all records were kept. Status quo remained until 1985 when a new National Archives Act was passed. The appraisal and disposal process adopted then is described and explained. It included the publication of instructions on records management as well as forms relating to records management. The influence of acts of law on the appraisal and disposal process is explained. Finally the experience with the arrangement of organised appraisal in Iceland is described.  相似文献   
17.
Educational Assessment, Evaluation and Accountability - Promoting success for all students is the driving force to develop and implement sound teacher evaluation systems. As Stronge suggests,...  相似文献   
18.
Although angiogenetic therapy using recombinant growth factors holds much hope for the treatment of ischaemic diseases, there are still many unanswered questions, including the method of administration, the correct dose of these factors, and the duration of the therapeutic approach. Exercise has also been suggested to induce neovascularizaiton in muscles. We evaluated the angiogenetic effects of the intramuscular administration of basic-fibroblast growth factor (b-FGF) and acidic-fibroblast growth factor (a-FGF) in rat heart, compared with rats who exercised daily. In conclusion, both the intramuscular administration of b-FGF and exercise increased significantly angiogenesis in the heart in contrast to the intramuscular administration of a-FGF, which was ineffective.  相似文献   
19.
Book reviews     
Association of Research Libraries  相似文献   
20.
In South Africa the education system for black children is fraught with problems. These problems are the direct result of apartheid and have been compounded by poverty and illiteracy. In this article the problem of poorly qualified or unqualified teachers is discussed especially with regard to the teaching of map skills to children in their fifth school year. The project team needed to develop affordable materials which could be used in large classes by teachers after a very short period of training. Books and other materials which are available commercially were examined, but for various reasons were found to be unsuitable for local conditions. After determining the extent of the problem, the project team followed a grassroots process of developing a flip chart which teachers learnt to use with confidence and which enabled pupils to master the concepts and skills necessary for understanding a map.  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