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   10346篇
  免费   107篇
各国政治   384篇
工人农民   1156篇
世界政治   445篇
外交国际关系   440篇
法律   5578篇
中国政治   18篇
政治理论   2402篇
综合类   30篇
  2023年   8篇
  2021年   17篇
  2020年   21篇
  2019年   48篇
  2018年   1332篇
  2017年   1269篇
  2016年   1087篇
  2015年   113篇
  2014年   67篇
  2013年   375篇
  2012年   260篇
  2011年   981篇
  2010年   1063篇
  2009年   637篇
  2008年   811篇
  2007年   768篇
  2006年   90篇
  2005年   138篇
  2004年   243篇
  2003年   216篇
  2002年   114篇
  2001年   46篇
  2000年   57篇
  1999年   45篇
  1998年   44篇
  1997年   49篇
  1996年   50篇
  1995年   50篇
  1994年   65篇
  1993年   32篇
  1992年   22篇
  1991年   31篇
  1990年   21篇
  1989年   17篇
  1988年   18篇
  1987年   16篇
  1986年   12篇
  1985年   17篇
  1984年   18篇
  1983年   30篇
  1982年   17篇
  1981年   17篇
  1980年   17篇
  1979年   12篇
  1978年   15篇
  1977年   19篇
  1976年   9篇
  1974年   6篇
  1973年   6篇
  1966年   7篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
951.
952.
Since 1998, over 5500 people have died while attempting to cross the U.S.–Mexico border without authorization. These deaths have primarily occured in the Arizona desert. Despite the high volume of deaths, little experimental work has been conducted on Sonoran Desert taphonomy. In this study, pig carcasses were used as proxies for human remains and placed in different depositional contexts (i.e., direct sunlight and shade) that replicate typical sites of migrant death. Decomposition was documented through daily site visits, motion-sensitive cameras and GIS mapping, while skeletal preservation was investigated through the collection of the remains and subsequent faunal analysis. Our results suggest that vultures and domestic dogs are underappreciated members of the Sonoran scavenging guild and may disperse skeletal remains and migrant possessions over 25 m from the site of death. The impact of scavengers and the desert environment on the decomposition process has significant implications for estimating death rates and identifying human remains along the Arizona/Mexico border.  相似文献   
953.
954.
955.
Climate change is an increasingly complex and global environmental issue. As a result, scholars have begun to compare the efforts of specific countries such as the UK and the USA in dealing with climate change. However, missing within this comparative literature is a discussion of the important role that administrative agencies play in implementing climate change policy through rulemaking. More specifically, it is unclear how administrative processes may impact or explain variations in the policy implemented within a given country. In fact, it has been over 25 years since Vogel's work compared the regulatory processes of the USA and UK. As a result, this paper's interviews with agency rule writers in both countries provide an updated comparison of their rulemaking processes, which is essential to understanding why countries may vary in the climate change policy they implement. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
956.
The features of regulatory encounters that foster the evolution of cooperation often also encourage the evolution of capture and corruption. Solutions to the problems of capture and corruption—limiting discretion, multiple-industry rather than single-industry agency jurisdiction, and rotating personnel—inhibit the evolution of cooperation. Tripartism—empowering public interest groups—is advanced as a way to solve this policy dilemma. A game-theoretic analysis of capture and tripartism is juxtaposed against an empowerment theory of republican tripartism. Surprisingly, both formulations lead to the conclusion that some forms of capture are desirable. The strengths from converging the weaknesses of these two formulations show how certain forms of tripartism might prevent harmful capture, identify and encourage efficient capture, enhance the attainment of regulatory goals, and strengthen democracy. While the case we make for tripartism is purely theoretical and general in its application to all domains of business regulation, our conclusion is a call for praxis to fish out the contexts in which the theory is true or false.  相似文献   
957.
958.
959.
960.
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