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   22721篇
  免费   1373篇
各国政治   1136篇
工人农民   972篇
世界政治   1730篇
外交国际关系   887篇
法律   14346篇
中国共产党   2篇
中国政治   136篇
政治理论   4720篇
综合类   165篇
  2023年   100篇
  2021年   107篇
  2020年   501篇
  2019年   536篇
  2018年   687篇
  2017年   711篇
  2016年   800篇
  2015年   599篇
  2014年   657篇
  2013年   2694篇
  2012年   620篇
  2011年   665篇
  2010年   652篇
  2009年   679篇
  2008年   676篇
  2007年   732篇
  2006年   692篇
  2005年   585篇
  2004年   610篇
  2003年   518篇
  2002年   570篇
  2001年   769篇
  2000年   714篇
  1999年   568篇
  1998年   356篇
  1997年   268篇
  1996年   298篇
  1995年   263篇
  1994年   247篇
  1993年   258篇
  1992年   374篇
  1991年   398篇
  1990年   370篇
  1989年   337篇
  1988年   372篇
  1987年   342篇
  1986年   397篇
  1985年   362篇
  1984年   308篇
  1983年   292篇
  1982年   241篇
  1981年   199篇
  1980年   185篇
  1979年   260篇
  1978年   161篇
  1977年   134篇
  1975年   119篇
  1974年   145篇
  1973年   111篇
  1972年   99篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
This article examines the history of political science in relation to the history of the prison. It considers how theories of the state in political science have assumed that proper states should punish with prisons, and traces these ideas to the work of Francis Lieber, the first academic political scientist in the USA. Because his ideas about prison reform were central to his conceptualization of the discipline as a science of punishment, his theory of the state is an understudied part of the history of mass incarceration. Lieber argued that the state had a moral duty to punish its citizens with the prison, and an obligation to manage the risks of democracy through the prison's principles of scientific certainty, less eligibility, and disciplinary solitude. By examining the life and work of Francis Lieber, this article offers new ways of thinking about political science's past, and its status as part of the history of the American prison.  相似文献   
982.
Abstract

A simulation model that mirrors the actual practices of lenders in setting qualification requirements for mortgage loans is used to assess the impact of permanent buydowns and buyups on the maximum sale price that buyers can afford. Buydowns are reductions in the coupon rate traded off against higher discount points; buyups are the reverse. Although buydowns have little effect on afford ability, buyups can have significant effects. Their potential is largely unrealized, however, because of the call risk to lenders of loans carrying premiums. The authors propose a “discount recovery” provision, which would be similar to a prepayment penalty except that the payment upon prepayment would be tied to the amount of the discount foregone by the lender. This would protect lenders against call risk, giving them every reason to offer buyups as a way of expanding demand.  相似文献   
983.
984.
985.
986.
987.
988.
In this paper, we consider several features of teacher‐retention policies based on value‐added measures of effectiveness under a variety of empirically grounded rules and parameters. We consider the effects of policy design by varying the standard above which satisfactory teachers are expected to perform. We simulate recently adopted policies that remove teachers based on consecutive unsatisfactory performance and compare these to policies that remove teachers based on poor performance on average over a multiyear period. We also consider the precision of the performance measure and the underlying variation in teacher quality on policy effects. Finally, the simulation makes a step forward by incorporating recent empirical findings of a relationship between teacher quality and natural attrition from the profession. Our results indicate that deselection policies based on value‐added measures have the potential to improve teacher quality, although understanding the role of policy design, self‐selected exits, and the underlying variation in teacher quality is essential for determining policy effects.  相似文献   
989.
Political competition lies at the core of representative democracy. Yet, uncompetitive elections and uncontested races are widespread in the United States, particularly at the state level. In this article, we analyze the consequences of uncontested elections on lawmaking activity. Our primary hypothesis is that legislators who run unopposed are less active lawmakers than those who were selected through competitive elections. Studying roll‐call vote participation and bill introduction and enactment for most of the U.S. states for 1999–2000, we find that state legislators elected in unopposed elections perform more poorly compared to their colleagues elected in competitive contests.  相似文献   
990.
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