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   580篇
  免费   54篇
各国政治   34篇
工人农民   25篇
世界政治   94篇
外交国际关系   58篇
法律   215篇
中国政治   7篇
政治理论   198篇
综合类   3篇
  2023年   10篇
  2022年   7篇
  2021年   5篇
  2020年   23篇
  2019年   28篇
  2018年   47篇
  2017年   54篇
  2016年   34篇
  2015年   27篇
  2014年   26篇
  2013年   80篇
  2012年   32篇
  2011年   20篇
  2010年   11篇
  2009年   16篇
  2008年   28篇
  2007年   22篇
  2006年   8篇
  2005年   15篇
  2004年   12篇
  2003年   15篇
  2002年   15篇
  2001年   14篇
  2000年   8篇
  1999年   9篇
  1998年   6篇
  1997年   5篇
  1996年   3篇
  1995年   7篇
  1994年   4篇
  1993年   8篇
  1992年   4篇
  1991年   2篇
  1990年   1篇
  1989年   2篇
  1988年   4篇
  1987年   1篇
  1986年   2篇
  1984年   4篇
  1983年   2篇
  1980年   1篇
  1978年   2篇
  1977年   2篇
  1976年   1篇
  1975年   1篇
  1974年   2篇
  1973年   1篇
  1971年   3篇
排序方式: 共有634条查询结果,搜索用时 15 毫秒
211.
212.
The Peltzman Effect is a well known and controversial theory in the literature. Studies have struggled to find a dataset that can accurately test for the presence of the effect. We have created a unique dataset and use a natural experiment from the sport of stock car racing to test the theory. Using race-level data from NASCAR events, we find strong evidence that a major safety regulation has led to more on-track accidents and an increased risk to both spectators and pit crew members.  相似文献   
213.
214.
215.
Collective Memory from a Psychological Perspective   总被引:1,自引:1,他引:0  
The study of collective memory has burgeoned in the last 20 years, so much so that one can even detect a growing resistance to what some view as the imperialistic march of memory studies across the social sciences (e.g., Berliner 2005; Fabian 1999). Yet despite its clear advance, one area that has remained on the sidelines is psychology. On the one hand, this disinterest is surprising, since memory is of central concern to psychologists. On the other hand, the relative absence of the study of collective memory within the discipline of psychology seems to suit both psychology and other disciplines of the social sciences, for reasons that will be made clear. This paper explores how psychology might step from the sidelines and contribute meaningfully to discussions of collective memory. It reviews aspects of the small literature on the psychology of collective memory and connects this work to the larger scholarly community’s interest in collective memory. The first three authors contributed equally to this paper. The order in which they are listed reflects the throw of a die.  相似文献   
216.
This paper seeks to analyse and make sense of the growing role and implications of forms of 'contractual governance' that are emerging in diverse fields of social life and public policy in England and Wales, both within and beyond criminal justice. Collectively, these modes of control mimic and deploy 'contracts' and 'agreement' in the regulation of deviant conduct and disorderly behaviour. The rise of contractual governance is explored against the background of a crisis in penal modernism and the challenge of crime prevention. Contractual governance in a number of fields is outlined and discussed, including home-school agreements in education; acceptable behaviour contracts and introductory tenancies in social housing; restrictive covenants in private residential neighbourhoods; domestic security and private residential patrols and youth offender contracts. It will be argued that, in these contexts, contracts seek to induce conformity and order through modes of governing the future that depart significantly from traditional modes of policing and that recast social obligations in forms of parochial control.  相似文献   
217.
218.
219.

Other Index

Keyword Index Volume 9  相似文献   
220.
Tasmanian opium accounts for 25% of the world's legal supply of opium straw, and in 1998-99 sufficient numbers of flower pods (66,013) to manufacture ca 500 kg of heroin were stolen. Whilst the heroin signature program has been developed to determine the origin of heroin from other key producers, no such signature currently exists for Tasmanian derived heroin. Tasmanian poppies contain a unique alkaloid, oripavine, which is the source of 'marker' impurities in illicit heroin produced from Tasmanian poppy straw. Treatment of oripavine (500mg) under Thiboumery and Mohr heroin processing conditions, followed by simple evaporative workup afforded 613 mg of a dark orange residue, which upon extensive chromatographic purification yielded oripavine 3-acetate (2) 22 mg; 3-acetyl-N-acetyldesthebaine (3) 35 mg; 3-acetyl-6-methoxy-4,5-epoxyphenanthrene (4) 5.8 mg; 3,4-diacetyl-6-methoxyphenanthrene (5) 27 mg; and 3,4,6-methoxy-5-[2(N-methylacetamido)]ethylphenanthrene (6) 52 mg. Compounds (2-6) are derived from oripavine and are unique to heroin derived from the Tasmanian poppy Papaver somniferum N. Analysis of illicit heroin samples seized from Turkey, Pakistan, Columbia and Myanmar did not reveal any of the aforementioned marker compounds. We have, however, identified four of these marker compounds (3-6) in seized heroin samples from Australia suggesting that they are of Tasmanian origin. Complete details of the isolation and identification of these compounds are provided.  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