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   35579篇
  免费   361篇
  国内免费   14篇
教育   26115篇
科学研究   3115篇
各国文化   254篇
体育   2739篇
综合类   7篇
文化理论   595篇
信息传播   3129篇
  2021年   262篇
  2020年   398篇
  2019年   637篇
  2018年   2846篇
  2017年   2704篇
  2016年   2247篇
  2015年   552篇
  2014年   705篇
  2013年   4549篇
  2012年   720篇
  2011年   1217篇
  2010年   1230篇
  2009年   863篇
  2008年   1099篇
  2007年   1549篇
  2006年   498篇
  2005年   741篇
  2004年   825篇
  2003年   660篇
  2002年   457篇
  2001年   475篇
  2000年   534篇
  1999年   440篇
  1998年   265篇
  1997年   271篇
  1996年   314篇
  1995年   255篇
  1994年   268篇
  1993年   228篇
  1992年   358篇
  1991年   379篇
  1990年   346篇
  1989年   370篇
  1988年   341篇
  1987年   331篇
  1986年   328篇
  1985年   382篇
  1984年   305篇
  1983年   305篇
  1982年   248篇
  1981年   249篇
  1980年   264篇
  1979年   356篇
  1978年   262篇
  1977年   239篇
  1976年   201篇
  1975年   183篇
  1974年   187篇
  1973年   185篇
  1971年   175篇
排序方式: 共有10000条查询结果,搜索用时 72 毫秒
91.
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   
92.
93.
94.
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   
95.
96.
97.
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   
98.
99.
100.
Policies for responding to allegations of fraud in research   总被引:1,自引:0,他引:1  
Greene PJ  Durch JS  Horwitz W  Hooper VS 《Minerva》1985,23(2):203-215
  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