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   3690篇
  免费   66篇
各国政治   105篇
工人农民   108篇
世界政治   161篇
外交国际关系   110篇
法律   2812篇
中国政治   21篇
政治理论   402篇
综合类   37篇
  2020年   41篇
  2019年   40篇
  2018年   63篇
  2017年   55篇
  2016年   70篇
  2015年   32篇
  2014年   56篇
  2013年   269篇
  2012年   94篇
  2011年   137篇
  2010年   86篇
  2009年   62篇
  2008年   120篇
  2007年   136篇
  2006年   115篇
  2005年   90篇
  2004年   133篇
  2003年   125篇
  2002年   123篇
  2001年   167篇
  2000年   149篇
  1999年   111篇
  1998年   23篇
  1995年   18篇
  1993年   28篇
  1992年   64篇
  1991年   86篇
  1990年   89篇
  1989年   96篇
  1988年   95篇
  1987年   92篇
  1986年   76篇
  1985年   81篇
  1984年   67篇
  1983年   59篇
  1982年   27篇
  1981年   20篇
  1979年   36篇
  1978年   33篇
  1977年   22篇
  1976年   27篇
  1975年   29篇
  1974年   38篇
  1973年   38篇
  1972年   36篇
  1971年   36篇
  1970年   39篇
  1969年   33篇
  1968年   27篇
  1967年   18篇
排序方式: 共有3756条查询结果,搜索用时 31 毫秒
11.
12.
13.
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   
14.
15.
16.
Fabella  R. V. 《Public Choice》1996,89(3-4):325-337
Public Choice - We consider an economy where the rent value depends indirectly on value-adding investment of agents (thus indirectly endogenous) and the win-probability is a function of rent...  相似文献   
17.
18.
19.
A simple and rapid method is described for processing organ and water samples for the identification of diatoms so that they can be studied and recorded for taxonomic and diagnostic purposes. Samples are treated with concentrated nitric acid; the fluid obtained is centrifuged, and its sediment is dried, coated, and examined under the scanning electron microscope. The method does not alter the morphology of diatoms and allows the study of freshwater and seawater species present in the organs of bodies found in the water, making possible the diagnosis of drowning under specific conditions.  相似文献   
20.
An important problem in the political economy of the UK is that the disparity of unemployment rates across its regions is much more marked than the corresponding dispersion of wage rates. One possibility is that this is due to the attitude of trade unions to their members in different regions. If unions wish to preserve parity between members in different regions then they will value wage equality between regions over and above wage levels. This may then persuade them to overlook inter-regional productivity differences in setting wages. The price that low-efficiency regions will then pay for this desire for wage equality is higher unemployment rates.Much of the research for this paper was carried out while the author was visiting the Trade Union Economics Research Institute (FIEF), Stockholm in 1989. An earlier version of this paper was presented at a seminar there and the author is gratefully to Villy Bergstrom, Paul Chen, Douglas Hibbs, Eva Udden-Jondal and other institute members for several useful comments. Comments from Kevin Lee, John Spencer and an anonymous referee have also substantially improved the paper. The usual disclaimer applies.  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