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   21196篇
  免费   290篇
  国内免费   123篇
教育   14489篇
科学研究   2704篇
各国文化   158篇
体育   1848篇
综合类   11篇
文化理论   147篇
信息传播   2252篇
  2021年   167篇
  2020年   304篇
  2019年   448篇
  2018年   599篇
  2017年   552篇
  2016年   553篇
  2015年   345篇
  2014年   455篇
  2013年   3660篇
  2012年   432篇
  2011年   476篇
  2010年   355篇
  2009年   355篇
  2008年   392篇
  2007年   416篇
  2006年   373篇
  2005年   366篇
  2004年   337篇
  2003年   324篇
  2002年   325篇
  2001年   360篇
  2000年   393篇
  1999年   381篇
  1998年   194篇
  1997年   192篇
  1996年   240篇
  1995年   219篇
  1994年   187篇
  1993年   189篇
  1992年   311篇
  1991年   305篇
  1990年   302篇
  1989年   357篇
  1988年   277篇
  1987年   285篇
  1986年   286篇
  1985年   337篇
  1984年   284篇
  1983年   275篇
  1982年   243篇
  1981年   222篇
  1980年   210篇
  1979年   306篇
  1978年   255篇
  1977年   229篇
  1976年   203篇
  1975年   158篇
  1974年   192篇
  1973年   165篇
  1971年   142篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
73.
Information access is central to library and information science, yet explorations of its conceptual nature have been limited. Given the importance of information access to the discipline, there is a need for research to create a better understanding of the concept and its many roles in all activities and behaviors related to information. Drawing on the theoretical work of Elfreda Chatman, this article proposes that the study of information access can be facilitated through the recognition and examination of the physical, intellectual, and social aspects of information access. These types of access are examined through three case studies in terms of different information behaviors and contexts, with a particular focus on the importance of social access. The article also discusses the future roles that considerations of social access can play in research and theory.  相似文献   
74.
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   
75.
Conclusions Palestinian teachers at the pre-collegiate level who participate in the CEEPAT programme will, it is hoped, learn to place new emphasis on enhancement of their students' analytical skills and discourage an identification of knowledge with memorisation. For their part, Palestinian professors who have been trained to teach in the programme will presumably constitute a growing reservoir of talent which may be expected to raise the quality of Palestinian university education. Plans are now under way to give all Palestinians teaching under the auspices of CEEPAT an opportunity to attend an annual, three-week winter seminar in Gaza and/or a summer seminar in the United States, both of which will focus on issues of pedagogy and methodology. Such professors can be expected to pass on their new understanding of teaching via discussion to their colleagues and to their university students, thereby spreading an important pedagogical method to other segments of the Palestinian... community. 7 CEEPAT clearly has the potential to make a significant contribution to the elevation of educational standards in Palestine at a time of major historical change.In Palestine, higher education of quality is obviously a very serious business. It is understood that it underlies any possibility of individual betterment, economic development, or the evolution of an independent Palestinian state. If ever the Israeli occupation is completely terminated and the present financial crisis of the universities is solved, Palestinian university and post-baccalaureate training may reasonably be expected to become fully competitive on an international scale.  相似文献   
76.
77.
The purpose of the study was to identify the pattern of publication about women and AIDS in scientific journals. Bradford zones were identified in each of six databases. The study determined that journal scatter for this subset of AIDS literature differed from the scatter in the general literature; further, the information indexed in the six electronic sources demonstrated little overlap. Consequently, key journal and newsletter titles identified by this study should form the core of any collection focusing on women and AIDS. The assurance of quality patient care management demands that librarians consult multiple resources for information retrieval that can assist health care providers, patients, and caregivers to enhance quality of life as well as to provide optimum care.  相似文献   
78.
79.
80.
This is an update of an earlier article listing directories, journal articles, and general books that aid the librarian, resident, or medical student in finding information on residency and fellowship programs. The article also gives suggestions for building a file of program catalogs related to residencies, fellowships, and clerkships and related materials.  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