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   7426篇
  免费   226篇
各国政治   395篇
工人农民   233篇
世界政治   584篇
外交国际关系   313篇
法律   4296篇
中国政治   46篇
政治理论   1698篇
综合类   87篇
  2020年   79篇
  2019年   102篇
  2018年   152篇
  2017年   154篇
  2016年   158篇
  2015年   116篇
  2014年   119篇
  2013年   849篇
  2012年   154篇
  2011年   184篇
  2010年   164篇
  2009年   169篇
  2008年   181篇
  2007年   181篇
  2006年   211篇
  2005年   186篇
  2004年   179篇
  2003年   196篇
  2002年   173篇
  2001年   227篇
  2000年   191篇
  1999年   179篇
  1998年   109篇
  1997年   107篇
  1996年   82篇
  1995年   84篇
  1994年   83篇
  1993年   93篇
  1992年   126篇
  1991年   157篇
  1990年   134篇
  1989年   152篇
  1988年   138篇
  1987年   159篇
  1986年   155篇
  1985年   151篇
  1984年   139篇
  1983年   146篇
  1982年   107篇
  1981年   101篇
  1980年   93篇
  1979年   100篇
  1978年   79篇
  1977年   63篇
  1976年   68篇
  1975年   66篇
  1974年   73篇
  1973年   69篇
  1972年   56篇
  1969年   59篇
排序方式: 共有7652条查询结果,搜索用时 0 毫秒
201.
202.
203.
204.
The aim of this five-wave longitudinal study was to investigate the relationship between anxiety and adolescent identity development. Participants were 1,313 adolescents who annually completed measures of anxiety and identity. Growth Mixture Modeling (GMM) analyses demonstrated that the adolescent population was best typified by two latent growth trajectory classes: a low anxiety class (n = 1,199) characterized by a low initial level of anxiety that decreased over time and a high anxiety class (n = 114) characterized by a higher initial level of anxiety that increased over time. To answer our research question, we tested a model in which the anxiety classes predicted initial levels and rates of change of three identity dimensions: commitment, in-depth exploration, and reconsideration of commitment. Findings indicated that the high anxiety adolescents displayed a more troublesome identity development than their low anxiety peers, since their commitments became weaker with age, and they reconsidered them intensively.
Wim MeeusEmail:

Elisabetta Crocetti   is a post-doctoral researcher of the University of Macerata. She received her Ph.D. in Educational Sciences from the University of Macerata. Theo Klimstra   is a doctoral student at the Research Centre Adolescent Development of Utrecht University. Loes Keijsers   is a doctoral student at the Research Centre Adolescent Development of Utrecht University. William W. Hale III   is Assistant Professor at the Research Centre Adolescent Development, Utrecht University. He received his Ph.D. at the Department of Biological Psychiatry, University of Groningen. Wim Meeus   is Professor of Adolescent Development and chair of the Research Centre Adolescent Development of Utrecht University. He received his Ph.D. in Social Psychology from the Utrecht University.  相似文献   
205.
The literature on intelligence analysis contains many references to the ‘review process’, the mechanism by which analysts’ drafts are converted into corporate products. Analysts whose drafts consistently navigate the process quickly and smoothly are regarded as star performers. Divining the practical meaning of organizational definitions of ‘good’ analysis and the personal preferences of specific senior reviewers is not easy, however. Analysts occasionally commit their understanding of reviewers’ stylistic preferences to paper, effectively providing style guides to help others. This essay presents and explains the development and implications of one such guide, which was designed to help analysts in CIA’s Office of Strategic Research in the early 1970s.  相似文献   
206.
This paper deals with the long-term evolution of dock labor in Dakar. Through the utilization of archival sources and their analysis, this investigation explores the changes that occurred in this sector and primarily the reform plan developed during the world wars but that was never introduced into the labor regulations, mainly due to the colonial regime. In addition, this paper studies the legal changes since the 1970s when the dockers’ statute was settled. Furthermore, this research uses oral testimony from retired Senegalese dockers to study the way these workers observed these structural changes. It is the first time that this topic has been explored for the port of Dakar from a historical long-term perspective.  相似文献   
207.
208.
209.
210.
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