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   19355篇
  免费   573篇
各国政治   861篇
工人农民   742篇
世界政治   1624篇
外交国际关系   749篇
法律   11197篇
中国共产党   2篇
中国政治   113篇
政治理论   4420篇
综合类   220篇
  2021年   108篇
  2020年   237篇
  2019年   305篇
  2018年   392篇
  2017年   466篇
  2016年   488篇
  2015年   355篇
  2014年   430篇
  2013年   2010篇
  2012年   485篇
  2011年   490篇
  2010年   405篇
  2009年   450篇
  2008年   508篇
  2007年   544篇
  2006年   517篇
  2005年   457篇
  2004年   474篇
  2003年   488篇
  2002年   445篇
  2001年   724篇
  2000年   658篇
  1999年   547篇
  1998年   319篇
  1997年   272篇
  1996年   234篇
  1995年   234篇
  1994年   279篇
  1993年   256篇
  1992年   366篇
  1991年   388篇
  1990年   342篇
  1989年   374篇
  1988年   332篇
  1987年   357篇
  1986年   353篇
  1985年   358篇
  1984年   310篇
  1983年   344篇
  1982年   281篇
  1981年   261篇
  1980年   200篇
  1979年   259篇
  1978年   178篇
  1977年   155篇
  1976年   139篇
  1975年   135篇
  1974年   144篇
  1973年   128篇
  1972年   116篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
151.
Research indicates that senators evaluate U.S. Supreme Court nominations on two ideological dimensions: the distance between themselves and the nominee, and the potential effect confirmation would have on the Court median. My analysis of nominations from 1968 to 2006 provides evidence that senators are also influenced by the ideological contrast between the nominee and the departing justice.  相似文献   
152.
A new literary programme has been started in the West AfricanService of the B.B.C., and this article is a reprint of oneof the talks. The Ibo speaker was formerly in the Customs, andqualified as a barrister last November: he is also the authorof numerous poems in English, and of a novel, The Prince ofUtete. The other two are schoolmasters working as Assistantsat the School of Oriental and African Studies. For technicalreasons, the orthography is not quite complete.  相似文献   
153.
Both theory and research have been refined to gain a better understanding of when race and ethnicity matter in justice proceedings. In the present research, this line of inquiry was continued by differentiating among minority youth to assess the extent being African American, Native American, and Asian American influenced juvenile justice decision making and how these effects compared to one another and Whites. Utilizing an interpretation of the symbolic threat thesis that emphasizes stereotyping, the authors anticipated Native Americans to be responded to more severely than African Americans, followed by Asian Americans who were anticipated to be responded to more like Whites. The results indicated partial support for these expectations.  相似文献   
154.
The present study drew on four competing theoretical perspectives to examine the relationship between family structure and juvenile delinquency. Using data from the Add Health Study, the authors examined nonserious and serious delinquent behavior across youth from different types of households and also considered how the association between family structure and delinquency might be conditioned by family processes and economic factors. Results from negative binomial regression analyses indicated that, in general, type of household was not a significant predictor of nonserious or serious delinquency. Rather, maternal attachment emerged as the most important determinant of delinquent behavior among youth from all family types. The results are discussed within the context of Hirschi's original interpretation of social control theory and future directions for research are suggested.  相似文献   
155.
In this article we explore how much state is necessary to make governance work. We begin by clarifying concepts of governance and the “shadow of hierarchy” and we follow this clarification with a brief overview of empirical findings on governance research in developed countries. We then discuss the dilemmas for governance in areas of limited statehood, where political institutions are too weak to hierarchically adopt and enforce collectively binding rules. While prospects for effective policymaking appear to be rather bleak in these areas, we argue that governance research has consistently overlooked the existence of functional equivalents to the shadow of hierarchy. We assert that governance with(out) government can work even in the absence of a strong shadow of hierarchy, we identify functional equivalents to the shadow of hierarchy, and we discuss to what extent they can help overcome issues of legitimacy and effectiveness in areas of limited statehood.  相似文献   
156.
Postmortem examination of a former professional basketball player revealed an abnormal heart, most notably a single coronary artery. The literature on single coronary arteries is briefly reviewed, and the possible mechanism which caused the patient's condition is considered. This case is particularly unusual because of the patient's profession, which is so physically demanding.  相似文献   
157.
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   
158.
159.
160.
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