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   199篇
  免费   12篇
各国政治   22篇
工人农民   5篇
世界政治   13篇
外交国际关系   5篇
法律   75篇
政治理论   91篇
  2022年   1篇
  2020年   1篇
  2019年   2篇
  2018年   6篇
  2017年   3篇
  2016年   6篇
  2015年   2篇
  2014年   4篇
  2013年   16篇
  2012年   4篇
  2011年   5篇
  2010年   6篇
  2009年   4篇
  2008年   3篇
  2007年   9篇
  2006年   5篇
  2005年   4篇
  2004年   2篇
  2003年   8篇
  2002年   7篇
  2001年   8篇
  2000年   10篇
  1999年   6篇
  1998年   7篇
  1997年   14篇
  1996年   3篇
  1995年   4篇
  1994年   4篇
  1993年   3篇
  1992年   4篇
  1991年   3篇
  1990年   4篇
  1989年   5篇
  1988年   6篇
  1987年   4篇
  1986年   5篇
  1985年   3篇
  1984年   5篇
  1983年   4篇
  1982年   1篇
  1981年   1篇
  1978年   1篇
  1977年   2篇
  1976年   1篇
  1975年   2篇
  1973年   1篇
  1971年   1篇
  1969年   1篇
排序方式: 共有211条查询结果,搜索用时 15 毫秒
91.
92.
This paper analyzes the influence of alternative voting technologies on electoral outcomes in multi-party systems. Using data from a field experiment conducted during the 2005 legislative election in Argentina, we examine the role of information effects associated with alternative voting devices on the support for the competing parties. We find that differences in the type of information displayed and how it was presented across devices favored some parties to the detriment of others. The impact of voting technologies was found to be larger than in two-party systems, and could lead to changes in election results. We conclude that authorities in countries moving to adopt new voting systems should carefully take the potential partisan advantages induced by different technologies into account when evaluating their implementation.  相似文献   
93.
94.
95.
The premise of discourse theory in environmental policy is that realities are shaped by language. One discourse that is gaining popularity is the concept of environmental security, a discourse that presupposes environmental threats as urgent. The attempt to cast environmental issues as security issues has resulted in the common use of security jargon, idioms, and metaphors in policymakers’ and politicians’ statements. Various analyses attempt to identify why natural resources are discussed in terms and language of security. However, far fewer studies have attempted to identify differences in the manner in which different types of resources are incorporated into such a discourse by different actors and what variables contribute to this process. This study examines the construction of the security references, security arguments, and language in the statements of the Commission on Sustainable Development dealing with energy and water. We found that international organizations and Non-governmental Organizations were somewhat more likely than state actors to use security references to discuss sustainability issues. The issues securitized are not the traditional high political ones such as regime stability and conflicts, but rather issues more associated with human security, such as access to renewable energy, affordable food, and clean water. The fact that in many statements examined the use of security references was not associated with any existential threat and hence did not comply with the conditions of the Copenhagen School raises some doubts as to whether security language in these statements implies a true securitization move. We also examined whether the use of the term “security” by states was correlated with greater resource scarcity or vulnerability. In the case of water-related sessions, the evidence was mixed, depending on the choice of dependent variable. The results from energy security regressions, however, were inconsistent with the hypothesis that greater scarcity or vulnerability induces more use of security language.  相似文献   
96.

Objectives

Using data from a randomized experiment, to examine whether moving youth out of areas of concentrated poverty, where a disproportionate amount of crime occurs, prevents involvement in crime.

Methods

We draw on new administrative data from the U.S. Department of Housing and Urban Development’s Moving to Opportunity (MTO) experiment. MTO families were randomized into an experimental group offered a housing voucher that could only be used to move to a low-poverty neighborhood, a Section 8 housing group offered a standard housing voucher, and a control group. This paper focuses on MTO youth ages 15–25 in 2001 (n = 4,643) and analyzes intention to treat effects on neighborhood characteristics and criminal behavior (number of violent- and property-crime arrests) through 10 years after randomization.

Results

We find the offer of a housing voucher generates large improvements in neighborhood conditions that attenuate over time and initially generates substantial reductions in violent-crime arrests and sizable increases in property-crime arrests for experimental group males. The crime effects attenuate over time along with differences in neighborhood conditions.

Conclusions

Our findings suggest that criminal behavior is more strongly related to current neighborhood conditions (situational neighborhood effects) than to past neighborhood conditions (developmental neighborhood effects). The MTO design makes it difficult to determine which specific neighborhood characteristics are most important for criminal behavior. Our administrative data analyses could be affected by differences across areas in the likelihood that a crime results in an arrest.  相似文献   
97.
Jonathan N. Katz Division of the Humanities and Social Sciences, California Institute of Technology, Pasadena, CA 91125 e-mail: jkatz{at}caltech.edu e-mail: nathaniel.beck{at}nyu.edu (corresponding author) This article considers random coefficient models (RCMs) fortime-series–cross-section data. These models allow forunit to unit variation in the model parameters. The heart ofthe article compares the finite sample properties of the fullypooled estimator, the unit by unit (unpooled) estimator, andthe (maximum likelihood) RCM estimator. The maximum likelihoodestimator RCM performs well, even where the data were generatedso that the RCM would be problematic. In an appendix, we showthat the most common feasible generalized least squares estimatorof the RCM models is always inferior to the maximum likelihoodestimator, and in smaller samples dramatically so. Authors' note: We gratefully acknowledge the financial supportof the National Science Foundation. Katz also acknowledges thesupport of the Center for Advanced Study in the Behavioral Sciences.We are thankful to Jake Bowers, Rob Franzese, Andy Gelman, SandyGordon, Bill Greene, and Luke Keele for comments; to Larry Bartelsfor always reminding us that our judgment may outperform thedata; as well as to the anonymous reviewers of Political Analysis.  相似文献   
98.
99.
100.
The article examines the role of governments in the transition in cable policy in the three largest media countries of Europe (Britain, France and Germany). In theoretical terms it is argued that the involvement of governments in determining the course of development of cable systems has comprised three main stages. In the first stage, governments tried to ignore cable and prevent the establishment of cable infrastructure. In the second stage, governments regulated the technology in order to promote a national cable policy and encourage the overall development of the broadcasting media. In the third stage, although at different speeds and perceptions, governments deregulated cable by giving permission to market forces to dominate cable's development and abandoning the social goals of cable policy.  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