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   12512篇
  免费   1307篇
各国政治   507篇
工人农民   450篇
世界政治   946篇
外交国际关系   331篇
法律   9472篇
中国共产党   1篇
中国政治   83篇
政治理论   1955篇
综合类   74篇
  2021年   69篇
  2020年   363篇
  2019年   372篇
  2018年   447篇
  2017年   523篇
  2016年   515篇
  2015年   474篇
  2014年   465篇
  2013年   1306篇
  2012年   314篇
  2011年   397篇
  2010年   548篇
  2009年   493篇
  2008年   311篇
  2007年   282篇
  2006年   390篇
  2005年   270篇
  2004年   264篇
  2003年   265篇
  2002年   233篇
  2001年   453篇
  2000年   357篇
  1999年   304篇
  1998年   149篇
  1997年   133篇
  1996年   104篇
  1995年   133篇
  1994年   142篇
  1993年   117篇
  1992年   218篇
  1991年   238篇
  1990年   218篇
  1989年   231篇
  1988年   210篇
  1987年   178篇
  1986年   207篇
  1985年   225篇
  1984年   221篇
  1983年   186篇
  1982年   147篇
  1981年   131篇
  1980年   129篇
  1979年   150篇
  1978年   93篇
  1977年   79篇
  1976年   68篇
  1975年   71篇
  1974年   77篇
  1973年   64篇
  1972年   57篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
The purpose of this survey was to determine the methods of analysis being used on gunshot residue (GSR) samples in forensic science laboratories across the United States. In addition, the two general techniques of GSR analysis are compared and contrasted. Problems encountered by analysts using scanning electron microscopy/energy-dispersive X-ray analysis (SEM/EDX) are discussed.  相似文献   
102.
One of the remedies sought by state and local officials for the growing burden of federal mandates is a mandate reimbursement law. A major purpose of mandate reimbursement is to deter Congress from imposing excessive costs on state and local governments by making it fully accountable for its actions. The paper begins by extending the economic theory of grants to mandates and reimbursed mandates. It goes on to assess the benefits and costs of mandate reimbursement, and to distinguish mandates that should be reimbursed, should a reimbursement program prove desirable, from those that should not. Then, using the economic theory of grants and mandates, the paper compares reimbursed mandates with two alternatives for accomplishing the same objective, compensating grants and procedural rules. It concludes that the latter are more promising than mandate reimbursement.  相似文献   
103.
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   
104.
105.
106.
This report assesses the effects on peripheral oxygen saturation and heart rate that positional restraint induces when a person is prone, handcuffed, and "hog-tied." Peripheral oxygen saturation and heart rate were monitored at rest, during exercise, and during recovery from exercise for 10 adult subjects. The effects of positional restraint produced a mean recovery time that was significantly prolonged. Consequently, the physiological effects produced by positional restraint should be recognized in deaths where such measures are used.  相似文献   
107.
108.
109.
110.
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