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   652篇
  免费   23篇
各国政治   47篇
工人农民   41篇
世界政治   54篇
外交国际关系   37篇
法律   320篇
中国政治   7篇
政治理论   142篇
综合类   27篇
  2023年   8篇
  2022年   3篇
  2021年   9篇
  2020年   10篇
  2019年   11篇
  2018年   20篇
  2017年   21篇
  2016年   21篇
  2015年   19篇
  2014年   23篇
  2013年   84篇
  2012年   13篇
  2011年   29篇
  2010年   16篇
  2009年   15篇
  2008年   21篇
  2007年   25篇
  2006年   29篇
  2005年   26篇
  2004年   17篇
  2003年   9篇
  2002年   21篇
  2001年   19篇
  2000年   14篇
  1999年   10篇
  1998年   8篇
  1997年   4篇
  1996年   6篇
  1995年   7篇
  1994年   6篇
  1993年   11篇
  1992年   7篇
  1991年   15篇
  1990年   13篇
  1989年   11篇
  1988年   4篇
  1987年   5篇
  1986年   4篇
  1985年   11篇
  1984年   3篇
  1983年   10篇
  1982年   6篇
  1981年   5篇
  1980年   4篇
  1979年   3篇
  1978年   7篇
  1977年   7篇
  1976年   5篇
  1971年   3篇
  1969年   6篇
排序方式: 共有675条查询结果,搜索用时 15 毫秒
501.
Ideas about the role of fathers in the separated family havechanged over the last few decades. The prevalent legal constructof ‘co-parenting’ implies that children should beable to maintain contact with a non-resident parent, usuallythe father, if they wish, except in cases where there has beenabuse or violence. Research in several disciplines has soughtto explain the processes of contact by examining the behaviourof separated fathers, their relationships within the family,and the separated family as a whole. Quantitative studies haveexplored levels of involvement, the father–child relationshipand the inter-parental relationship as factors affecting children’soutcomes, while an expanding body of qualitative work has soughtto map the practice of co-parenting through identifying thediversity of separated parenthood and the perspectives of non-residentfathers in particular. The contributions of these diverse approachesto current debates on non-resident fathers are reviewed in thisarticle.  相似文献   
502.
The vote on Massachusetts' Proposition 2½—and by extension the votes to restrain or roll back taxes in other states as well—should not be interpreted simply as expressions of the narrowly defined self-interest of the voters. This study shows that other characteristics such as sex, race, religion, occupation, educational background, and political orientation also have an important influence on voting behavior. These characteristics combine with self-interest measures such as public sector employment and voters' likely gains from tax reduction to push individual voters in different directions on the issue of tax limitation. Consequently, we find little polarization in the electorate along demographic lines.  相似文献   
503.
Tunnels produced in human head hair by fungal hyphae were examined with a light microscope and with a scanning electron microscope. The tunnels had small diameters and exhibited minimal branching. The use of a backscattered electron detector facilitated the locating of the openings of the tunnels in the surfaces of the hairs. In the backscattered electron image, tunnel openings appeared as dark spots. The tunneling hyphae did not show a preference for a particular location for entering the shaft of the hair. Some hyphae penetrated under the free edges of the cuticular scales, while others burrowed through the surfaces of the scales.  相似文献   
504.
505.
Although the role of the woman offender in the scientific study of criminality has traditionally been largely unexplored, recent studies indicate both an increase in reported female crime and an upsurge in interest on the subject. The general state of the literature is examined and suggestions for the improvement of research in the area are offered.  相似文献   
506.
507.
508.
Black pigmentation of the thyroid gland has been observed in patients chronically taking minocycline antibiotics. Pigment changes of the skin, blood vessels, and bone have also been reported. Some of these changes may be caused by traumatic or toxic etiologies, therefore persons conducting forensic death investigations need be aware of minocycline-related changes. This article reviews pigment changes of the thyroid gland and discusses the potential forensic import of such findings.  相似文献   
509.
He is author of numerous articles and Enforcing the Fourth Amendment: A Jurisprudential History;and coeditor (with Peter W. Schramm) of American Political Parties and Constitutional Government;and the forthcoming Separation of Powers and Good Government.  相似文献   
510.
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