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   29435篇
  免费   433篇
  国内免费   65篇
教育   21160篇
科学研究   2759篇
各国文化   286篇
体育   2155篇
综合类   57篇
文化理论   251篇
信息传播   3265篇
  2022年   190篇
  2021年   315篇
  2020年   442篇
  2019年   662篇
  2018年   937篇
  2017年   965篇
  2016年   912篇
  2015年   603篇
  2014年   820篇
  2013年   5486篇
  2012年   755篇
  2011年   764篇
  2010年   689篇
  2009年   644篇
  2008年   673篇
  2007年   660篇
  2006年   660篇
  2005年   581篇
  2004年   493篇
  2003年   456篇
  2002年   444篇
  2001年   638篇
  2000年   575篇
  1999年   461篇
  1998年   284篇
  1997年   318篇
  1996年   332篇
  1995年   254篇
  1994年   271篇
  1993年   246篇
  1992年   383篇
  1991年   364篇
  1990年   422篇
  1989年   392篇
  1988年   332篇
  1987年   349篇
  1986年   340篇
  1985年   359篇
  1984年   314篇
  1983年   282篇
  1982年   254篇
  1981年   234篇
  1980年   236篇
  1979年   351篇
  1978年   274篇
  1977年   216篇
  1976年   202篇
  1975年   194篇
  1974年   189篇
  1971年   192篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
91.
92.
Serials, one of the more complicated areas of library technical endeavors, has lacked the benefit of standards for a long time. Even now, with standards beginning to be available, the majority of institutions are not working within standard serials formats. A survey to determine the use of serials standards in libraries was conducted in 1988 by the American Library Association, Resources and Technical Services Division, Serials Section, Committee to Study Serials Standards. In the spring of 1988 a survey was sent to a group encompassing the Association of Research Libraries members, CONSER participants, United States Newspaper Program participants, Microform Project libraries, and some vendors and librarians who attended the Committee meetings on a regular basis. The survey questionnaire assessed the current level of serials standards awareness of librarians and vendors. Topics included the type of serials systems used, standards relevant to serials control and union listing and whether or not they are implemented, types and levels of training staff received in the application of standards, benefits of the standards, and areas where standards are most needed.  相似文献   
93.
94.
95.
Physician information seeking: improving relevance through research   总被引:1,自引:0,他引:1  
Health sciences libraries have considerable potential as resources for both formal continuing professional education, as well as the informal continuing education that results from the professional's efforts to solve problems in daily practice. While there is a growing interest in making the resources of health sciences libraries more accessible to practitioners on a routine, day-to-day basis, there also needs to be more awareness of how, when, where, and why professionals look for information in the context of practical problems. This paper reviews recent research that identifies the context in which physicians seek information and advice from external sources, the information sources that physicians access, and the factors that influence which particular sources are sought. The results indicate that physicians vary in their information needs, preferences, motivations, and strategies for seeking information. This diversity suggests that health sciences libraries, in their efforts to be more accessible, should consider "market research" to determine the needs, preferences, and use patterns of the library's targeted users. Libraries may also benefit from exploring alternative methods of improving access to their resources.  相似文献   
96.
97.
98.
99.
100.
This paper discusses the evaluation of scientific activity with the help of some scientometric indices, in particular, a citation index. The information massif of the bibliographic database of citations to domestic publications of Kazakh authors is statistically described.  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