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   843篇
  免费   78篇
各国政治   66篇
工人农民   38篇
世界政治   68篇
外交国际关系   50篇
法律   455篇
中国政治   4篇
政治理论   228篇
综合类   12篇
  2021年   5篇
  2020年   14篇
  2019年   13篇
  2018年   29篇
  2017年   35篇
  2016年   37篇
  2015年   19篇
  2014年   21篇
  2013年   133篇
  2012年   36篇
  2011年   38篇
  2010年   25篇
  2009年   22篇
  2008年   30篇
  2007年   43篇
  2006年   23篇
  2005年   19篇
  2004年   22篇
  2003年   24篇
  2002年   26篇
  2001年   16篇
  2000年   7篇
  1999年   7篇
  1998年   10篇
  1997年   13篇
  1996年   12篇
  1995年   19篇
  1994年   15篇
  1993年   16篇
  1992年   11篇
  1991年   12篇
  1990年   6篇
  1989年   12篇
  1988年   15篇
  1987年   12篇
  1986年   14篇
  1985年   13篇
  1984年   5篇
  1983年   8篇
  1982年   6篇
  1981年   8篇
  1980年   8篇
  1979年   8篇
  1978年   9篇
  1977年   4篇
  1976年   6篇
  1975年   5篇
  1973年   6篇
  1972年   5篇
  1969年   4篇
排序方式: 共有921条查询结果,搜索用时 15 毫秒
821.
Ever since Bennett Woodcroft compiled his seminal index to theearly English patents, it has been recognized that the emanationsfrom Patent Offices contain a wealth of information. Battelle,in their work on patent trends analysis, revealed that approximately50 per cent of patents are used during their lifetime and that80 per cent of the information obtainable from patents is notavailable from any  相似文献   
822.
823.
The authors argue that delegation of discretion over environmental regulation to the states may trigger a process analogous to Gresham's Law in which lax regulation in one state drives out stringent regulation in neighboring states. This devolution to regulatory laxity is illustrated by the lax pesticide regulations in five Midwestern "agricultural" states. Questions are raised about the effects of the Reagan Administration's commitment to reduce the stringency of federal environmental regulations and delegate more regulatory discretion to the states.  相似文献   
824.
825.
826.
827.
828.
Building on a suggestion by Adam Yarmolinsky that the Federal American government insure the equity that homeowners have developed in their property, we suggest some additional elements which would make a more complete urban policy package. Educational opportunity is seen as a critical element in property value within the American context and any scheme such as Yarmolinsky suggests needs to take into account the fact that house price reflects heavily the general judgment of the quality of the school to which that residence has access. Hence, a stabilization of the housing market is heavily dependent upon an equalization of educational opportunity. Two ideas to this end are suggested. One, the school parity adjustment, would grant funds directly to the school district, generally in inverse proportion to the assessed property valuation, and consistent with the funding required for a quality education. The second notion, the urban tax credit would help to rectify the desirability of suburban locations for parents of school age children by giving them tax credits for living in the city, and in effect, equalizing the subsidy which the government already provides suburban dwellers through insuring the school-inflated value of their property through Mortgage Insurance.  相似文献   
829.
Education and training may be the single most important elements of a national revitalization strategy. In spite of their importance, public policies which address the major issues in education and training do not exist for the most part. Where policies do exist, they are founded on incorrect premises or are made inappropriate by incompatible policies in other domains. This paper attempts to identify the problems and offers solutions to the issue of education and training.  相似文献   
830.
This paper explores some perverse features that can emerge when social contracts are moved from a social vacuum to a setting of social interdependence. In particular we note incentives that might exist in conjunction with externality problems that yield situations in which: (1) social contracts reduce social wealth; (2) sub-global social contracts are Pareto inferior to the absence of social contracts; (3) there are no incentives for global social contracts. While previous works emphasized the benefits of contracts, this paper focuses on their costs. A conclusion reached is that perhaps justice and efficiency demand not a single global social contract but rather a rich melange of sub-global contracts with appropriate interstices of anarchy.  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