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   19103篇
  免费   574篇
各国政治   845篇
工人农民   711篇
世界政治   1603篇
外交国际关系   724篇
法律   11072篇
中国共产党   2篇
中国政治   90篇
政治理论   4437篇
综合类   193篇
  2020年   235篇
  2019年   281篇
  2018年   370篇
  2017年   444篇
  2016年   474篇
  2015年   326篇
  2014年   374篇
  2013年   2002篇
  2012年   435篇
  2011年   471篇
  2010年   387篇
  2009年   429篇
  2008年   496篇
  2007年   505篇
  2006年   497篇
  2005年   448篇
  2004年   470篇
  2003年   472篇
  2002年   438篇
  2001年   723篇
  2000年   649篇
  1999年   540篇
  1998年   332篇
  1997年   275篇
  1996年   231篇
  1995年   248篇
  1994年   278篇
  1993年   255篇
  1992年   364篇
  1991年   398篇
  1990年   358篇
  1989年   381篇
  1988年   353篇
  1987年   366篇
  1986年   371篇
  1985年   361篇
  1984年   318篇
  1983年   346篇
  1982年   284篇
  1981年   257篇
  1980年   196篇
  1979年   256篇
  1978年   187篇
  1977年   165篇
  1976年   148篇
  1975年   133篇
  1974年   158篇
  1973年   133篇
  1972年   120篇
  1971年   100篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
84.
85.
Although law enforcement agencies across the nation have assumed part of the responsibility in the fight against terrorism, significant confusion exists as to the role of local law enforcement. While some agencies have taken steps towards terrorism prevention, little data has been collected on which agencies have taken the greatest steps, how those agencies have changed, and how other agencies should direct their activity. This case study of law enforcement census data from a single state considered variations in terrorism preparedness and predictors of preparedness. Agency size, presence of funding, and other variables significantly predict levels of terrorism preparedness. Important policy implications such as the distribution of funding and which agencies should be working towards terrorism preparedness are discussed.  相似文献   
86.
87.
88.
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   
89.
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   
90.
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