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   189029篇
  免费   8365篇
  国内免费   155篇
  197549篇
  2020年   2782篇
  2019年   3455篇
  2018年   3673篇
  2017年   4122篇
  2016年   4718篇
  2015年   3941篇
  2014年   4820篇
  2013年   23527篇
  2012年   5010篇
  2011年   4345篇
  2010年   4130篇
  2009年   4874篇
  2008年   4468篇
  2007年   4098篇
  2006年   4552篇
  2005年   4446篇
  2004年   3932篇
  2003年   3527篇
  2002年   3380篇
  2001年   4049篇
  2000年   3922篇
  1999年   3672篇
  1998年   2916篇
  1997年   2744篇
  1996年   2647篇
  1995年   2467篇
  1994年   2431篇
  1993年   2399篇
  1992年   3043篇
  1991年   2850篇
  1990年   2691篇
  1989年   2558篇
  1988年   2542篇
  1987年   2531篇
  1986年   2565篇
  1985年   2758篇
  1984年   2756篇
  1983年   2503篇
  1982年   2451篇
  1981年   2433篇
  1980年   2257篇
  1979年   2538篇
  1978年   2331篇
  1977年   2249篇
  1976年   2062篇
  1975年   2239篇
  1974年   2319篇
  1973年   2246篇
  1972年   1830篇
  1971年   1726篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
231.
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   
232.
233.
Public goods theories highlight an incentive system that rewards ‘free riding’ on the contributions of early contributors toward collective actions. However, because such theories focus on creation of the good, they may underestimate returns that accrue to early contributors subsequent to the good's realization. The concept of formative investment is introduced here to describe the extent to which organizations help to create public goods such as interorganizational linkages like participatory federations. Data from the CEOs of 48 organizations involved in a participatory federation were used to assess how an organization's level of formative investment is related to later patterns of dependency and interaction among federation members. Findings suggest that from a long‐term perspective, and for goods that involve communication and interaction, the incentive structure may not be so favorable for free riders. To the extent that organizations with high formative investment have the capability to envision the future and communicate that vision to potential federation partners, they may be able to both reduce free riding and secure for themselves advantageous positions in the subsequent network of relations.  相似文献   
234.
235.
236.
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   
237.
238.
239.
240.
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