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   175863篇
  免费   7935篇
  国内免费   156篇
  183954篇
  2020年   2775篇
  2019年   3428篇
  2018年   3538篇
  2017年   3938篇
  2016年   4622篇
  2015年   3915篇
  2014年   4794篇
  2013年   23411篇
  2012年   4589篇
  2011年   3742篇
  2010年   3901篇
  2009年   4768篇
  2008年   3910篇
  2007年   3528篇
  2006年   4095篇
  2005年   4034篇
  2004年   3533篇
  2003年   3208篇
  2002年   2944篇
  2001年   3438篇
  2000年   3383篇
  1999年   3261篇
  1998年   2861篇
  1997年   2661篇
  1996年   2587篇
  1995年   2427篇
  1994年   2386篇
  1993年   2340篇
  1992年   2692篇
  1991年   2550篇
  1990年   2411篇
  1989年   2301篇
  1988年   2273篇
  1987年   2261篇
  1986年   2258篇
  1985年   2508篇
  1984年   2558篇
  1983年   2349篇
  1982年   2371篇
  1981年   2338篇
  1980年   2204篇
  1979年   2260篇
  1978年   2217篇
  1977年   2166篇
  1976年   1951篇
  1975年   2077篇
  1974年   2149篇
  1973年   2033篇
  1972年   1608篇
  1971年   1522篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
211.
212.
213.
214.
215.
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   
216.
217.
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   
218.
219.
220.
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   
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