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   25692篇
  免费   685篇
各国政治   1049篇
工人农民   979篇
世界政治   2034篇
外交国际关系   849篇
法律   15490篇
中国共产党   2篇
中国政治   134篇
政治理论   5589篇
综合类   251篇
  2020年   291篇
  2019年   380篇
  2018年   480篇
  2017年   578篇
  2016年   596篇
  2015年   430篇
  2014年   492篇
  2013年   2495篇
  2012年   573篇
  2011年   651篇
  2010年   522篇
  2009年   603篇
  2008年   655篇
  2007年   683篇
  2006年   652篇
  2005年   590篇
  2004年   593篇
  2003年   617篇
  2002年   580篇
  2001年   996篇
  2000年   886篇
  1999年   727篇
  1998年   422篇
  1997年   347篇
  1996年   321篇
  1995年   318篇
  1994年   350篇
  1993年   324篇
  1992年   510篇
  1991年   559篇
  1990年   515篇
  1989年   534篇
  1988年   500篇
  1987年   508篇
  1986年   551篇
  1985年   532篇
  1984年   470篇
  1983年   491篇
  1982年   370篇
  1981年   332篇
  1980年   276篇
  1979年   365篇
  1978年   222篇
  1977年   230篇
  1976年   206篇
  1975年   180篇
  1974年   206篇
  1973年   191篇
  1972年   169篇
  1971年   154篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
982.
We provide a formal model illustrating the mutual relationship between corruption and capital account restrictions. Corrupt countries are more likely to impose capital controls because corruption reduces a government’s ability to collect tax revenue. If controls exist, however, individuals try to mitigate the burden by offering bribes, thereby increasing corruption. We test the model using panel data for 80 countries over the period 1984–2002 and find that corruption and restrictions indeed affect each other. Government’s attempts to increase revenue via controls on capital might thus invoke a restrictions-rent-seeking spiral with destructively high levels of both. Using capital controls to increase revenue should be reconsidered.  相似文献   
983.
984.
A positive, statistical and economic significant relation between growth, income level and the Economic Freedom of the World (EFW) index has been amply documented. Most analyses, however, use OLS methods which, in the presence of endogenous variables do not establish causality and produce biased and inconsistent estimates. This paper uncovers the exogenous component of EFW using IV methods and finds a robust channel from economic freedom to prosperity. The findings, including instrument validity tests, support the importance of policies and institutions for development and warrants policy advice aimed at increasing economic freedom to foster prosperity.  相似文献   
985.
The riskiness of state employee pension plan portfolios varies across states. We investigate whether this variation is related to how public employees and taxpayers share actuarial surpluses of pension accounts. We focus on two determinants of a plan’s asset mix: the relative influence of public employees to taxpayers; and whether a surplus-sharing contract is specified. Our theoretical model demonstrates that the effect of public employee influence on the asset mix is ambiguous. Our empirical results corroborate this complex theoretical result. In our theoretical and empirical analyses, if a surplus sharing rule is specified, plans adopt a more aggressive investment allocation.  相似文献   
986.
Michael J. Ensley 《Public Choice》2009,138(1-2):221-238
Individual citizens are the largest source of contributions for congressional candidates in the United States. This paper investigates if and how fundraising from this source is related to the ideological positions of candidates. Specifically, we ask whether the amount of contributions depends on: (1) the extremity of candidate ideology; and (2) the level of candidate divergence in the same race. These results have important implications for candidate positioning strategies, as well as for evaluating the effects of recent campaign finance reforms.  相似文献   
987.
In this paper, we examine whether the impact of negative advertising on citizens’ evaluations of candidates depends on the gender of the candidates. Given common gender stereotypes, we expect negative campaigning aimed at women candidates will affect citizens differently than negative campaigning against male candidates. The results of our study, derived from a survey experiment conducted on a nationwide sample of more than 700 citizens, demonstrate that negative commercials are less effective at depressing evaluations of woman candidates, compared to male candidates. The findings are consistent and strong, across a range of forces that people use to assess competing candidates (i.e., affect and trait evaluations, people’s beliefs about issues, anticipated vote choice). The tight control of the experimental design, including randomization of respondents into different conditions that vary in only one way, demonstrates that the gender of the candidate influences people’s reactions to different types of negative commercials.
Patrick J. KenneyEmail:
  相似文献   
988.
From 9/11 in the U.S. to train, subway, and airport bombings elsewhere, individuals frequently must make political decisions in the shadow of terrorist attacks. To date, few studies have examined how times of terror threat influence voters’ decision-making processes. Using data generated from three experiments we show that, in times of terrorist threat (compared to good times), individuals weight leadership more heavily in the voting booth. Our results also shed light on how much weight is given to other determinants of the vote (issues and partisanship) across these two conditions.  相似文献   
989.
990.
In this study, we consider the efficacy of a relatively new and widely accepted certification system for teachers established by the National Board for Professional Teaching Standards (NBPTS). We utilize an extensive database covering the universe of teachers and students in Florida for a four‐year span to determine the relationship between NBPTS certification and the impact of teachers on student test scores from both low‐stakes and high‐stakes exams. Contrary to some previous studies, we find evidence that NBPTS certification provides a positive signal of a teacher's contribution to student achievement only in a few isolated cases. However, our results do reinforce evidence from previous research that the process of becoming NBPTS certified does not increase teacher productivity. © 2009 by the Association for Public Policy Analysis and Management.  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