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   79596篇
  免费   3323篇
  国内免费   5篇
各国政治   4623篇
工人农民   3156篇
世界政治   6910篇
外交国际关系   3974篇
法律   40980篇
中国共产党   17篇
中国政治   800篇
政治理论   21511篇
综合类   953篇
  2021年   449篇
  2020年   1203篇
  2019年   1575篇
  2018年   1850篇
  2017年   2147篇
  2016年   2322篇
  2015年   1871篇
  2014年   2150篇
  2013年   10780篇
  2012年   1901篇
  2011年   2127篇
  2010年   2014篇
  2009年   2186篇
  2008年   2086篇
  2007年   2117篇
  2006年   2236篇
  2005年   2141篇
  2004年   2012篇
  2003年   1865篇
  2002年   1858篇
  2001年   2332篇
  2000年   1987篇
  1999年   1712篇
  1998年   1279篇
  1997年   1085篇
  1996年   1047篇
  1995年   1014篇
  1994年   1055篇
  1993年   1064篇
  1992年   1258篇
  1991年   1339篇
  1990年   1253篇
  1989年   1261篇
  1988年   1263篇
  1987年   1224篇
  1986年   1284篇
  1985年   1287篇
  1984年   1136篇
  1983年   1169篇
  1982年   969篇
  1981年   931篇
  1980年   743篇
  1979年   851篇
  1978年   687篇
  1977年   605篇
  1976年   552篇
  1975年   502篇
  1974年   538篇
  1973年   520篇
  1972年   444篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
801.
In 1990, the state of California passed the pioneering mandate on zero emission vehicles (ZEV). This technology‐forcing regulation is aimed at improvement of air quality and protection of public health from the adverse effects of air pollutants from automobiles. Facing severe opposition from the auto industry, the mandate has been revised a number of times, most recently in 2003, whereby the requirement for ZEVs have been made to align with the pace of technology development. Review of strategies used in implementation of the mandate has revealed greater emphasis on the economic incentives for rather than on environmental merits of ZEVs. Using prospect theory as the framework for analysis, the reasons have been explored. The findings of the study help us to understand how decisions are made with respect with to deviations from a mental anchor point and through the process of evaluation of losses and gains.  相似文献   
802.
胸外按摩致肋骨骨折法医病理学分析   总被引:3,自引:0,他引:3  
目的 探讨胸外按摩致肋骨骨折特点。 方法 对 1990~ 2 0 0 0年间华西医科大学法医学院所做 30例胸外按摩致肋骨骨折的尸检进行法医病理统计分析。 结果 肋骨骨折男性 2 8,女性 2例 ,年龄为 18~ 6 8岁 ,胸外按摩骨折主要发生在疾病、电击伤、溺死及中毒病例 ,以第 6~ 9肋骨的腋前、中线骨折常见 ,多为左侧。 结论 胸外按摩与外伤所致肋骨骨折具有明显的区别。  相似文献   
803.
We derive a simple inequality for the probability of observing a given DNA profile when assuming a fixed number of unknown persons have contributed to the mixed stain. We then show how this inequality can be used to obtain an upper bound for the number of unknown contributors needed to be considered.  相似文献   
804.
805.
806.
807.
As drug arrests and jail overcrowding added pressure to increase pretrial release in localities during the 1980s and 1990s, the need to manage a larger and higher-risk pretrial population of defendants awaiting adjudication in the community became a high priority for justice agencies. In the late 1990s Philadelphia officials sought to discover the ingredients of a successful supervision strategy through four interlinked field experiments to provide an empirical basis for a major reform of the pretrial release system. The results of the linked randomized experiments question common assumptions about “supervision,” its impact and effectiveness, about the underlying nature of the noncompliant defendant, and deterrence implications. The study emphasizes the importance of interpreting the findings in the context of implementation of the policy reform. Findings suggest that facilitative notification strategies wield little influence on defendant behavior and that deterrent aims are undermined by the system's failure to deliver consequences for defendant noncompliance during pretrial release. The most significant contribution of the article is its illustration of a major evidence-based policy reform undertaken by a major court system.  相似文献   
808.
This paper addresses the changing role of the Portuguese state, the present priority assigned to the process of reform and the new challenges to be overcome by public administration. Such processes are demanding a new agenda for education and research in public administration sciences, shifting from the public law paradigm to an interdisciplinary problem‐solving approach and giving special attention to 10 key areas of study, which we describe in the final section of the paper. It should be noted here that the opinions expressed in this paper do not necessarily reflect the position of their institutions.  相似文献   
809.
810.
Modern antitrust policy has a ‘love hate’ relationshipwith non-standard contracts that can overcome market failure.On the one hand, courts have abandoned various per se rulesthat once condemned such agreements outright, concluding thatmany non-standard contracts may produce benefits that are cognizableunder the antitrust laws.1 The prospect of such benefits, itis said, compels courts to analyze these agreements under theRule of Reason, under which the tribunal determines whethera given restraint enhances or destroys competition.2 At thesame time, courts, scholars, and the enforcement agencies haveembraced methods of rule of reason analysis that are undulyhostile to such agreements.3 In particular, courts and othersare too quick to view such agreements and the market outcomesthey produce as manifestations of market power. This articleseeks to explain why these agreements are still the object ofundue hostility.  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