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   71579篇
  免费   3302篇
各国政治   4541篇
工人农民   2951篇
世界政治   6319篇
外交国际关系   3908篇
法律   34333篇
中国共产党   11篇
中国政治   754篇
政治理论   21113篇
综合类   951篇
  2021年   409篇
  2020年   1174篇
  2019年   1526篇
  2018年   1699篇
  2017年   2019篇
  2016年   2202篇
  2015年   1832篇
  2014年   2108篇
  2013年   10655篇
  2012年   1697篇
  2011年   1812篇
  2010年   1879篇
  2009年   2102篇
  2008年   1842篇
  2007年   1829篇
  2006年   1953篇
  2005年   1851篇
  2004年   1744篇
  2003年   1577篇
  2002年   1579篇
  2001年   1807篇
  2000年   1564篇
  1999年   1372篇
  1998年   1172篇
  1997年   1030篇
  1996年   997篇
  1995年   957篇
  1994年   990篇
  1993年   991篇
  1992年   1052篇
  1991年   1087篇
  1990年   1012篇
  1989年   1075篇
  1988年   1053篇
  1987年   1069篇
  1986年   1061篇
  1985年   1104篇
  1984年   985篇
  1983年   1047篇
  1982年   939篇
  1981年   890篇
  1980年   699篇
  1979年   745篇
  1978年   613篇
  1977年   565篇
  1976年   522篇
  1975年   439篇
  1974年   437篇
  1973年   439篇
  1972年   390篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
152.
This paper addresses the relationship between accumulated knowledge and U.S. policy dealing with failed states and terrorism. The central thesis is threefold: (1) that more was known about the possible linkages between failing states and terrorism than appears in pre-9/11 U.S. policies; (2) that since 9/11 some important realignment of knowledge and practice has occurred, but it remains partial and incomplete; and (3) that new knowledge, especially about the policies to sustain and promote legitimate governance, needs to be generated in order to support an effective grand strategy for addressing the threats and challenges of the twenty-first century. The paper recommends such a grand strategy and, in addition to the required new knowledge, a significant reorganization of the U.S. national security policy-making apparatus. International studies curricula appear well suited for contributing to that new knowledge and the practitioners we require.  相似文献   
153.
154.
155.
156.
Divorce, although a statistical norm, is a developmental trauma to the children involved. This article looks at the two-camp emotional environment of a divorcing family and its effect on the formation of a child's identity. By examining developmental ages, chosen according to divorce research, the author attempts to show how the interspouse emotional cathexes negatively affect a child's sense of self in ways specific to the child's age at the divorce.  相似文献   
157.
From a conflict resolution perspective, it is clear why the child support guidelines are not going to reduce the adequacy and compliance gaps in child support payment conflicts between parents. As it stands, the conflict over equally sharing child support is destructive rather than positive. The guidelines do not reframe the conflict for the parents, enabling them to believe the interests of children are more important than their own interests to win the child support battle. To transform conflict from destructive to positive, the elements of conflict–expression of the conflict, scarce resources and rewards, and interdependency–must be transformed. It is argued that the guidelines do not transform the conflict but facilitate it. Courts and attorneys are also significant players in the child support conflict.  相似文献   
158.
A method has been developed on reverse phase high performance liquid chromatography for simultaneous determination of methyl, ethyl and isopropyl alcohols under refractive index detection using pure water as the mobile phase. A good separation has been achieved between these alcohols. Detector response was linear with a detection limit of 5 mg/100 ml. Recovery studies were performed by adding known amounts of methyl and ethyl alcohols to blood, lung and liver within the range 80–90%. The reproducibility of the results was always >90%. The quantitative distribution of methyl alcohol in postmortem body tissues and fluids has been reported in three cases of poisoning.  相似文献   
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