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   12513篇
  免费   412篇
各国政治   754篇
工人农民   374篇
世界政治   1114篇
外交国际关系   662篇
法律   6394篇
中国政治   85篇
政治理论   3406篇
综合类   136篇
  2021年   86篇
  2020年   173篇
  2019年   241篇
  2018年   306篇
  2017年   319篇
  2016年   324篇
  2015年   213篇
  2014年   273篇
  2013年   1706篇
  2012年   309篇
  2011年   326篇
  2010年   312篇
  2009年   319篇
  2008年   308篇
  2007年   362篇
  2006年   360篇
  2005年   367篇
  2004年   367篇
  2003年   360篇
  2002年   364篇
  2001年   333篇
  2000年   290篇
  1999年   249篇
  1998年   181篇
  1997年   179篇
  1996年   155篇
  1995年   161篇
  1994年   162篇
  1993年   154篇
  1992年   196篇
  1991年   235篇
  1990年   187篇
  1989年   204篇
  1988年   191篇
  1987年   211篇
  1986年   200篇
  1985年   205篇
  1984年   182篇
  1983年   196篇
  1982年   143篇
  1981年   144篇
  1980年   125篇
  1979年   128篇
  1978年   103篇
  1977年   89篇
  1976年   96篇
  1975年   75篇
  1974年   82篇
  1973年   79篇
  1972年   68篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
David Popenoe 《Society》1993,30(6):5-11
He is co-author of Fatherless America,which is forthcoming. He serves as co-chair of the Council on Families in America, a nonpartisan, interdisciplinary group of scholars and family experts concerned with family and child well-being.  相似文献   
102.
The fingernail ridge patterns of a pair of identical twins were compared to each other, their parents, and an unrelated subject. The patterns of the twins' nails showed regions of strong similarity but were distinguishable from one another. Fewer similarities were found when comparing the nails to those of the parents and the unrelated control. The twins were shown to be monozygotic by means of DNA profiling. This therefore represents the first demonstration of unique fingernail ridge patterns in subjects shown conclusively to be identical twins. When the fingernail ridge patterns were examined with a scanning electron microscope, the backscattered electron (BEI) images were found to have superior contrast when compared to the secondary electron (SEI) images.  相似文献   
103.
104.
105.
Little literature has been developed to describe the process of transferring a corporation's technology between international units of that company for ultimate transfer to their external customers (Kimberly 1981 and Leonard-Barton and Sinha 1993). This paper addresses the issues at Air Products and Chemicals, Inc. involved in the transfer of applications technology. Technology is transferred from the unit of the corporation which develops the technology to international affiliates and subsidiaries. The ultimate goal is the support of product sales to the external industrial customer. A strategy for this type of organization is described which is supported by references to theoretical constructs in the literature and empirical observations from the organization itself.  相似文献   
106.
107.
108.
109.
An important national initiative in juvenile justice is Juvenile Offender Reentry (JOR). The renewed emphasis on offender reintegration has generated significant attention to juvenile justice practices, with the notable exception of juvenile confinement facilities. Juvenile detention and, to a lesser degree, juvenile corrections practitioners are involved but not invested in reentry, having made very few programmatic changes to accommodate JOR initiatives largely because these initiatives have been external to the institution and its staff. Yet, reentry is a powerful concept for juvenile facility practitioners, and the application of reentry principles could have a profound impact on daily operations. This article addresses a range of issues about investing juvenile institutions in reentry practices. Several reentry models are discussed along with their implications for daily operations and programs.  相似文献   
110.
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