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   12013篇
  免费   331篇
各国政治   564篇
工人农民   436篇
世界政治   968篇
外交国际关系   437篇
法律   7252篇
中国政治   86篇
政治理论   2520篇
综合类   81篇
  2020年   138篇
  2019年   197篇
  2018年   272篇
  2017年   245篇
  2016年   248篇
  2015年   164篇
  2014年   223篇
  2013年   1286篇
  2012年   273篇
  2011年   300篇
  2010年   262篇
  2009年   279篇
  2008年   321篇
  2007年   304篇
  2006年   303篇
  2005年   264篇
  2004年   291篇
  2003年   272篇
  2002年   244篇
  2001年   496篇
  2000年   430篇
  1999年   338篇
  1998年   171篇
  1997年   167篇
  1996年   119篇
  1995年   124篇
  1994年   118篇
  1993年   119篇
  1992年   230篇
  1991年   281篇
  1990年   248篇
  1989年   258篇
  1988年   233篇
  1987年   263篇
  1986年   235篇
  1985年   236篇
  1984年   225篇
  1983年   215篇
  1982年   154篇
  1981年   157篇
  1980年   120篇
  1979年   161篇
  1978年   114篇
  1977年   82篇
  1976年   88篇
  1975年   93篇
  1974年   110篇
  1973年   118篇
  1972年   91篇
  1969年   74篇
排序方式: 共有10000条查询结果,搜索用时 156 毫秒
61.
The Green River Murder Investigation in King County, Washington, is currently the longest active serial murder investigation in U.S. history. During its course, over 26 separate scenes with from one to five victims each have been processed. The experience of the authors is presented in order to acquaint other agencies with techniques of outdoor scene processing that have evolved during recovery of remains from Green River and other skeletal cases.  相似文献   
62.
63.
64.
In motorcycle accidents involving two riders, medicolegal identification of the driver is necessary when one or both riders die. It is particularly important in the latter case, because the survivor almost always insists that he or she was not driving. One characteristic injury that distinguishes the driver from the passenger is inguinal contusion-laceration (accompanied internally by pelvic fracture). This injury, caused by collision of the pelvis with the fuel tank, identifies the driver.  相似文献   
65.
66.
The population-adjusted rate of teenage suicide in King County, Washington, was reviewed for the 26 years from 1959 to 1984. For the entire period, the rate did not change significantly. An abrupt change did occur during the middle of this period, but, for reasons discussed in the text, this may well represent a change in procedures and philosophy of death certification rather than a real change in rate. Reasons for the apparent discrepancy with national statistics are discussed.  相似文献   
67.
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   
68.
69.
70.
Ministerial reshuffles are complex exercises requiring careful handling. A frequent occurrence in British government, their significance is usually seen in political terms. Prime Ministers attach great importance to maximizing the political advantages to be gained from them. This factor is the chief determinant of their logistics, the principal characteristics of which are secrecy in advance and the speed with which ministerial changes are executed. These features - as much as the frequency of ministerial changes per se - may disrupt the policy process and have serious implications for minister-civil servant power relations. Such problems could be alleviated by giving ministers advance notice of changes of post. The institution of a process of ministerial handovers would strengthen the position of incoming ministers by making them less dependent on their officials, upon whom they rely heavily for initial briefing at present.  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