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   35278篇
  免费   343篇
  国内免费   15篇
教育   25880篇
科学研究   3118篇
各国文化   270篇
体育   2638篇
综合类   7篇
文化理论   572篇
信息传播   3151篇
  2021年   237篇
  2020年   369篇
  2019年   555篇
  2018年   2780篇
  2017年   2648篇
  2016年   2170篇
  2015年   520篇
  2014年   660篇
  2013年   4515篇
  2012年   709篇
  2011年   1217篇
  2010年   1215篇
  2009年   856篇
  2008年   1107篇
  2007年   1561篇
  2006年   507篇
  2005年   759篇
  2004年   839篇
  2003年   661篇
  2002年   470篇
  2001年   483篇
  2000年   538篇
  1999年   450篇
  1998年   265篇
  1997年   271篇
  1996年   324篇
  1995年   259篇
  1994年   279篇
  1993年   238篇
  1992年   375篇
  1991年   391篇
  1990年   351篇
  1989年   382篇
  1988年   354篇
  1987年   334篇
  1986年   334篇
  1985年   379篇
  1984年   304篇
  1983年   308篇
  1982年   252篇
  1981年   248篇
  1980年   262篇
  1979年   359篇
  1978年   263篇
  1977年   248篇
  1976年   208篇
  1975年   185篇
  1974年   189篇
  1973年   181篇
  1971年   176篇
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
91.
92.
How will the expansion of the concept of construct validity affect validation practice in employment testing? How does the need for consequential validity differ in educational and employment testing? How do the research bases differ for performance assessment in these settings? Are there parallel trends in policies for test use in education and industry?  相似文献   
93.
94.
95.
This paper examines end-user, online searching using data from a questionnaire mailed to 150 Canadian health professionals in practice settings. The response rate was 83% (n = 124). The data provide a demographic profile of early adopters of end-user searching in the health care community. Positive correlations with the user's level of implementation of end-user searching were found for the following variables: amount of time spent in research activities, amount of system training received, and use of Medical Subject Headings (MeSH). There was a negative association between the amount of time spent in patient care and implementation level. General practitioners and family physicians had lower implementation levels than physicians in other specialties. Successful implementers were more likely to be computer literate and to place a high value on formal information sources such as books, journals, and libraries. Health professionals using so-called "user-friendly" or menu-based software had lower levels of personal commitment to using online databases, as measured by a combination of continuance of use, willingness to pay personally, type of recommendations made to colleagues, and hardware ownership.  相似文献   
96.
97.
98.
Computers are integral to medical practice, education, and research. While medical students learn computer skills during their training, many practicing physicians do not have the same computer experience. To familiarize this group with the exciting developments in medical informatics, the Himmelfarb Health Sciences Library and Department of Computer Medicine at the George Washington University Medical Center organized a workshop "Introducing Your Office Computer!" for attending physicians. The workshop featured a short lecture/video presentation on computer applications in medicine followed by a "computer fair" of five computer applications. Eleven physicians attended the workshop. Feedback was very positive; many called later to request more detailed instructions on using the programs demonstrated. It was a valuable experience for the staff, and new bridges were built between departments and clients.  相似文献   
99.
100.
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