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   2594篇
  免费   95篇
各国政治   163篇
工人农民   73篇
世界政治   244篇
外交国际关系   182篇
法律   1080篇
中国政治   20篇
政治理论   905篇
综合类   22篇
  2023年   14篇
  2020年   37篇
  2019年   42篇
  2018年   62篇
  2017年   70篇
  2016年   76篇
  2015年   54篇
  2014年   52篇
  2013年   420篇
  2012年   42篇
  2011年   59篇
  2010年   58篇
  2009年   62篇
  2008年   71篇
  2007年   62篇
  2006年   75篇
  2005年   71篇
  2004年   82篇
  2003年   77篇
  2002年   70篇
  2001年   52篇
  2000年   41篇
  1999年   39篇
  1998年   55篇
  1997年   41篇
  1996年   34篇
  1995年   55篇
  1994年   46篇
  1993年   47篇
  1992年   35篇
  1991年   37篇
  1990年   42篇
  1989年   47篇
  1988年   42篇
  1987年   43篇
  1986年   39篇
  1985年   38篇
  1984年   45篇
  1983年   34篇
  1982年   37篇
  1981年   23篇
  1980年   22篇
  1978年   28篇
  1977年   24篇
  1976年   21篇
  1975年   15篇
  1974年   29篇
  1973年   18篇
  1969年   17篇
  1968年   13篇
排序方式: 共有2689条查询结果,搜索用时 31 毫秒
141.
142.
143.
144.
145.
146.
The Laffer curve analysis suggests a possible policy conflict between short-run revenue maximization and long-run fiscal health. This paper estimates short-run and long-run property tax base elasticity in order to test whether such a conflict exists for the property tax in central cities. A stock adjustment model is used and separate time-series estimates for four New York State central cities lend empirical support to such a conflict. The results show that while disincentive effects associated with property tax rate increases are not strong enough to reduce proeprty tax revenue in the short-run, they are substantial enough to reduce long-run revenue in all but one city. The paper also tests for asymmetric response to property tax rate changes and finds significant results for only one city.  相似文献   
147.
Since Botswana became independent in 1966 a steady process of decentralization has been undertaken by a Botswana Democratic Party (BDP) government confident in its own legitimacy and committed officially to a policy of rural development. In 1978 the President appointed a Local Government Structure Commission to test the suitability of the existing structure and to advise on the relationship between the four main institutions at district level–the District Administration, the District Council, the Land Board and the Tribal Administration. In its 1979 Report the Commission recommended that each institution should retain its separate identity, with its powers balanced by those of the others. This article reviews the working of each institution, and concludes that the Commission's recommendation was justified. It notes, however, that the balance between the four institutions has been tilted to an extent in favour of the District Administration. It shows that the District Councils have displayed an improved capacity for plan implementation, but need more skilled technical personnel and a better quality of elected councillor; that the Land Boards are no longer subordinate to the District Councils in administrative matters, but are hampered by a shortage of transport and finance; and that Tribal Administration staff still work under very poor conditions, though their salaries and pensionable status are much improved.  相似文献   
148.
149.
A simple technique is presented for the longitudinal sectioning of hair samples without the need for any embedding medium. The technique applies to single hair samples that are placed in a groove of a particular depth and can either be scraped or cut to the desired level. Planar sections are obtained that reveal the internal structure of the sample and are ideal for the application of surface analytical techniques for the study of internal transverse and longitudinal distributions of xenobiotics.  相似文献   
150.
An ordnance-disposal expert was killed while disposing of a cache of explosives. The likely position of the body was reconstructed by modeling the explosion as an omnidirectional emission of particles from a model of the explosion site and noting the distribution of particles on a model of a human. The applications and limitations of this method in reconstructing the events and correlation with the injuries noted at autopsy are discussed.  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