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   42390篇
  免费   1537篇
  国内免费   20篇
  2019年   456篇
  2018年   673篇
  2017年   723篇
  2016年   751篇
  2015年   531篇
  2014年   637篇
  2013年   3292篇
  2012年   1176篇
  2011年   1252篇
  2010年   768篇
  2009年   718篇
  2008年   1022篇
  2007年   1056篇
  2006年   930篇
  2005年   875篇
  2004年   831篇
  2003年   788篇
  2002年   866篇
  2001年   1382篇
  2000年   1346篇
  1999年   1024篇
  1998年   451篇
  1997年   398篇
  1996年   406篇
  1992年   845篇
  1991年   801篇
  1990年   814篇
  1989年   774篇
  1988年   764篇
  1987年   734篇
  1986年   752篇
  1985年   768篇
  1984年   608篇
  1983年   542篇
  1982年   427篇
  1981年   406篇
  1979年   703篇
  1978年   507篇
  1977年   452篇
  1976年   415篇
  1975年   595篇
  1974年   701篇
  1973年   691篇
  1972年   588篇
  1971年   542篇
  1970年   508篇
  1969年   548篇
  1968年   672篇
  1967年   607篇
  1966年   582篇
排序方式: 共有10000条查询结果,搜索用时 281 毫秒
51.
52.
53.
54.
55.
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   
56.
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   
57.
The token economy has been the primary model for the behavioral management of inpatient populations. However, this basically operant approach seldom emphasizes the development of cognitive-coping skills to help patients more effectively manage stressors that result in hospitalization. The Therapeutic Contract Program (TCP) is described as an inpatient-treatment strategy that is designed to help foster such cognitive-coping and self-control skills. While external structure is provided by components of this program, subprograms of the TCP have as their goal the development of internally-attributed coping skills and self-perceptions of competence. This preliminary report describes the structure of the TCP, as well as planned and in-progress measures of program participation and treatment outcome.  相似文献   
58.
59.
60.
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