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   23281篇
  免费   910篇
各国政治   1028篇
工人农民   875篇
世界政治   1878篇
外交国际关系   795篇
法律   14371篇
中国共产党   2篇
中国政治   122篇
政治理论   4914篇
综合类   206篇
  2020年   348篇
  2019年   398篇
  2018年   482篇
  2017年   568篇
  2016年   601篇
  2015年   463篇
  2014年   505篇
  2013年   2381篇
  2012年   543篇
  2011年   587篇
  2010年   516篇
  2009年   573篇
  2008年   587篇
  2007年   605篇
  2006年   591篇
  2005年   536篇
  2004年   554篇
  2003年   543篇
  2002年   499篇
  2001年   905篇
  2000年   817篇
  1999年   688篇
  1998年   369篇
  1997年   306篇
  1996年   275篇
  1995年   282篇
  1994年   322篇
  1993年   304篇
  1992年   455篇
  1991年   487篇
  1990年   435篇
  1989年   473篇
  1988年   418篇
  1987年   457篇
  1986年   442篇
  1985年   448篇
  1984年   375篇
  1983年   405篇
  1982年   324篇
  1981年   306篇
  1980年   224篇
  1979年   341篇
  1978年   233篇
  1977年   193篇
  1976年   177篇
  1975年   164篇
  1974年   183篇
  1973年   162篇
  1972年   148篇
  1971年   124篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
191.
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   
192.
193.
194.
195.
196.
This paper applies the poliheuristic theory of foreign policy decision making to non-democratic states. Poliheuristic theory asserts that state leaders assign primary importance to their political survival; however, the meaning of "the political" varies dramatically from country to country. Furthermore, the types of actors who hold leaders politically accountable also vary between countries. Consequently, leaders often pursue vastly different means of ensuring their political survival. The author uses the common distinction between single-party, military, and personalist autocracies to show that apparently arbitrary differences in autocratic leaders' political concerns actually vary in systematic and potentially predictable ways. Because this argument is generalized to non-democratic states as a whole, it has important implications for the ways in which democratic states craft their policies toward autocracies.  相似文献   
197.
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   
198.
199.
200.
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