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   5913篇
  免费   70篇
  国内免费   6篇
教育   4043篇
科学研究   613篇
各国文化   36篇
体育   502篇
综合类   10篇
文化理论   82篇
信息传播   703篇
  2023年   34篇
  2022年   54篇
  2021年   82篇
  2020年   134篇
  2019年   210篇
  2018年   308篇
  2017年   340篇
  2016年   290篇
  2015年   193篇
  2014年   229篇
  2013年   1037篇
  2012年   192篇
  2011年   202篇
  2010年   189篇
  2009年   140篇
  2008年   134篇
  2007年   166篇
  2006年   103篇
  2005年   111篇
  2004年   101篇
  2003年   89篇
  2002年   80篇
  2001年   109篇
  2000年   96篇
  1999年   82篇
  1998年   66篇
  1997年   53篇
  1996年   65篇
  1995年   36篇
  1994年   43篇
  1993年   37篇
  1992年   55篇
  1991年   60篇
  1990年   36篇
  1989年   44篇
  1988年   42篇
  1987年   36篇
  1986年   38篇
  1985年   45篇
  1984年   43篇
  1983年   27篇
  1982年   37篇
  1981年   28篇
  1980年   19篇
  1979年   39篇
  1978年   31篇
  1977年   28篇
  1974年   24篇
  1972年   27篇
  1971年   21篇
排序方式: 共有5989条查询结果,搜索用时 31 毫秒
11.
12.
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   
13.
The purpose of this article was to revitalize and disentangle common misconceptions about a scientific agenda for clinical supervision.  相似文献   
14.
15.
16.
17.
18.
19.
The National Library of Medicine has had an enormous impact on health information services all over the world. Although NLM is primarily a national institution, it has become an important international resource by responding to requests from the international community. NLM has been influential in three major ways. First, NLM has provided a model for other national and regional health information services. Second, it has been a catalyst, in that MEDLARS and other services it provides formed the nucleus of many regional networks. NLM helped such networks get started by giving advice on how to set up services and build collections and by "training the trainers" on the MEDLARS system. Third, NLM has supported national and regional operations by providing the additional training and materials needed for day-to-day service.  相似文献   
20.
Questions concerning some of the values we hold as librarians and the goals, standards, and other evaluation tools we derive from them are discussed in the context of the history of our profession and the present period of rapid change. The concepts of stable and changing paradigms and of "scientific communities" provide the foundation for consideration of how a changing conceptual framework can affect values and their application in the evaluation process. One of many possible scenarios for the future is briefly outlined to demonstrate how some traditional values may fare.  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