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   23648篇
  免费   988篇
  国内免费   11篇
  2020年   241篇
  2019年   308篇
  2018年   430篇
  2017年   447篇
  2016年   485篇
  2015年   346篇
  2014年   392篇
  2013年   1962篇
  2012年   683篇
  2011年   717篇
  2010年   417篇
  2009年   400篇
  2008年   553篇
  2007年   597篇
  2006年   523篇
  2005年   487篇
  2004年   451篇
  2003年   439篇
  2002年   473篇
  2001年   775篇
  2000年   739篇
  1999年   566篇
  1998年   242篇
  1997年   222篇
  1996年   240篇
  1992年   471篇
  1991年   470篇
  1990年   453篇
  1989年   420篇
  1988年   436篇
  1987年   393篇
  1986年   411篇
  1985年   407篇
  1984年   331篇
  1983年   293篇
  1982年   238篇
  1981年   232篇
  1979年   369篇
  1978年   278篇
  1977年   245篇
  1975年   297篇
  1974年   380篇
  1973年   379篇
  1972年   301篇
  1971年   292篇
  1970年   290篇
  1969年   256篇
  1968年   358篇
  1967年   317篇
  1966年   295篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
32.
This study examined information communication technologies and workplace friendship dynamics. Employees reported factors that influenced their initiation of friendship with a coworker and reported patterns and perceptions of communication with their workplace friend via different communication methods. Results indicated that personality, shared tasks, and perceived similarity are the most important factors to coworker friendship initiation, and the importance of physical proximity to workplace friendship is diminishing in the electronically connected workplace. Results confirm the primacy of face‐to‐face interaction for workplace friendship initiation and maintenance. E‐mail, phone, and texting were also central to communication among workplace friends. The amount of time spent telecommuting affected workplace friendship initiation and communication. Finally, generational differences were identified with respect to Internet‐based communication methods.  相似文献   
33.
34.
35.
36.
37.
38.
39.
The purpose of this paper is to study the convergent validity of the four most widely used burnout measures in a sample of Chinese nurses (N= 717). First, Structural Equation Modeling was used to investigate the factor structure of scores produced by the Maslach Burnout Inventory‐General Survey (MBI‐GS), the Burnout Measure (BM), the Shirom‐Melamed Burnout Measure (SMBM), and the Oldenburg Burnout Inventory (OLBI). Next, several competing models were tested to investigate the convergent validity of these four burnout instruments. The final results suggest that burnout is best conceived of as a multidimensional construct consisting of exhaustion and withdrawal, which are two related but conceptually distinct aspects. In addition, positively phrased items should be dropped from burnout measures for they constitute a separate factor that is considered to be an artifact.  相似文献   
40.
In Experiment 1, rats were trained on a discrimination between rubber- and sandpaper-covered arms of a maze after one group had been pre-exposed to these intra-maze cues. Pre-exposure facilitated subsequent discrimination learning, unless the discrimination was made easier by adding further discriminative stimuli, when it now significantly retarded learning. In Experiment 2, rats were trained on an extra-maze spatial discrimination, again after one group, but not another, had been pre-exposed to the extra-maze landmarks. Here too, pre-exposure facilitated subsequent discrimination learning, unless the discrimination was made substantially easier by arranging that the two arms between which rats had to choose were always separated by 135°. The results of both experiments can be explained by supposing that perceptual learning depends on the presence of features common to S+ and S-.  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