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   74569篇
  免费   3289篇
各国政治   4549篇
工人农民   3048篇
世界政治   6427篇
外交国际关系   3888篇
法律   37127篇
中国共产党   11篇
中国政治   769篇
政治理论   21097篇
综合类   942篇
  2021年   417篇
  2020年   1183篇
  2019年   1535篇
  2018年   1783篇
  2017年   2069篇
  2016年   2263篇
  2015年   1858篇
  2014年   2120篇
  2013年   10583篇
  2012年   1793篇
  2011年   1931篇
  2010年   1921篇
  2009年   2141篇
  2008年   1917篇
  2007年   1935篇
  2006年   2117篇
  2005年   1984篇
  2004年   1863篇
  2003年   1638篇
  2002年   1717篇
  2001年   2053篇
  2000年   1759篇
  1999年   1528篇
  1998年   1196篇
  1997年   1035篇
  1996年   1017篇
  1995年   989篇
  1994年   992篇
  1993年   1009篇
  1992年   1156篇
  1991年   1187篇
  1990年   1130篇
  1989年   1120篇
  1988年   1125篇
  1987年   1115篇
  1986年   1159篇
  1985年   1184篇
  1984年   1070篇
  1983年   1075篇
  1982年   930篇
  1981年   873篇
  1980年   701篇
  1979年   803篇
  1978年   629篇
  1977年   561篇
  1976年   514篇
  1975年   452篇
  1974年   478篇
  1973年   463篇
  1972年   398篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
391.
392.
393.
Employing a critical-mass theory of collective action, this article models the emergence of cooperation among state attorneys general in litigation against the tobacco industry. These suits were not independent events, nor was cooperation based on prior agreement among the attorneys general. Rather, cooperation emerged over time as a result of interdependent decision-making, with early lawsuits increasing the likelihood of later suits. The model emphasizes the "production function" of the collective good and the heterogeneity of the attorneys general and their political environments as keys to the development of cooperation. The model is tested against data using event history analysis.  相似文献   
394.
大鼠视神经夹伤后视网膜病变及其F-VEP检测   总被引:1,自引:0,他引:1  
目的观测大鼠视神经夹伤后视网膜病变及其对视功能时序性变化的影响。方法建立大鼠视神经夹伤模型,分别于伤后1、3、5、7、9、14、28、56、84d光镜观察视网膜病变,闪光视觉诱发电位(F-VEP)检测视功能状况。结果大鼠视神经损伤诱导视网膜神经节细胞(RGCs)较正常眼明显减少。损伤后3~7d RGCs减少率快速上升,14d 后缓慢下降,28d后几乎无明显变化。视神经损伤1d F-VEP波形变得低而宽;1-14d峰潜时和波幅呈进行性下降, 28d后变化平稳,并显示恢复迹象。结论神经损伤后节细胞继发性病变是视功能进行性下降的重要基础;并与视功能的时间规律变化具有相关性。  相似文献   
395.
Human Rights and Modern Liberalism: a Critique   总被引:2,自引:0,他引:2  
The idea of human rights has become one of the central moral notions of both the theory and practice of international politics. While its foundation and future in the practice of politics looks bright, it is an idea that still causes great trouble at the theoretical level. What are human rights? Why do we have them? To what should we attribute the authority of their moral claims? The theorist Michael Freeman has suggested one theory that by addressing such questions may serve as a foundation for human rights. His theory, however, ends by begging the questions it set out to answer.  相似文献   
396.
In this article, the author reviews state supreme court applications of Troxel v. Granville , analyzing the impact of the decision on the courts' ongoing efforts to adjudicate visitation disputes between parents and grandparents. Set against a background of legislative recognition of grandparents' rights and judicial uncertainty regarding the appropriate role of nonparents in children's lives, Troxel reaffirmed the constitutional right of parents to direct their children's upbringing. The author argues that state supreme courts evaluating gradparent visitation statutes and seeking to enforce Troxel 's presumption in favor of parents should be more willing to strike down overly broad statutes. Such an approach would be a positive step toward addressing the excessive judicial discretion that the Troxel Court found so problematic, and would signal to state legislatures the need for statutes that both provide for the needs of children and protect parental rights.  相似文献   
397.
THE BOOKSHELF     
Books reviewed in this article:
G. Andrew Benjamin and Jackie Gollan, Family Evaluation in Custody Litigation: Reducing Risks of Ethical Infractions and Malpractice .  相似文献   
398.
In the statistical interpretation of forensic glass evidence it is standard practice to make the assumption of homogeneity of the refractive index (RI) of the source glass, or of localized homogeneity. However, the work of Locke and Hayes showed that, for toughened windscreen glass, this assumption might not be true. This work is well cited, but there appears to have been little follow-on published research. Furthermore, the toughening process is something known to affect the refractive index, and is a process that float glass does not undergo. Float glass is a major component of casework in New Zealand and for that reason it would be interesting to know whether the findings of Locke and Hayes apply when dealing with float glass. In this paper we describe an experiment similar to that of Locke and Hayes, systematically examining the variation of RI in a pane of float window glass. It was found that, although there were no systematic differences in refractive index, there were observable differences across the pane.  相似文献   
399.
400.
The present study explores the relationships between gender and imprisonment decisions in Minnesota before and after the introduction of sentencing guidelines. Results from a series of logistic regression models indicate that gender alone did not have a significant impact on the likelihood of imprisonment, but women with dependent children were significantly less likely to be imprisoned before sentencing guidelines and in the years subsequent to their implementation. The findings suggest that despite the introduction of sentencing reforms, court officials tend to return to issues of substantive justice, and they appear unable to shed their individual or organizational ideas of fairness in sentencing.  相似文献   
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