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   10008篇
  免费   89篇
各国政治   295篇
工人农民   1162篇
世界政治   340篇
外交国际关系   434篇
法律   5558篇
中国政治   15篇
政治理论   2276篇
综合类   17篇
  2023年   20篇
  2022年   23篇
  2021年   18篇
  2020年   63篇
  2019年   67篇
  2018年   1324篇
  2017年   1270篇
  2016年   1082篇
  2015年   126篇
  2014年   92篇
  2013年   289篇
  2012年   251篇
  2011年   964篇
  2010年   1061篇
  2009年   629篇
  2008年   786篇
  2007年   753篇
  2006年   67篇
  2005年   135篇
  2004年   222篇
  2003年   194篇
  2002年   82篇
  2001年   40篇
  2000年   52篇
  1999年   39篇
  1998年   37篇
  1997年   32篇
  1996年   34篇
  1995年   51篇
  1994年   40篇
  1993年   13篇
  1992年   26篇
  1991年   11篇
  1990年   13篇
  1989年   21篇
  1988年   17篇
  1987年   13篇
  1986年   12篇
  1985年   9篇
  1984年   19篇
  1983年   20篇
  1982年   11篇
  1981年   4篇
  1980年   6篇
  1979年   9篇
  1978年   9篇
  1977年   12篇
  1975年   5篇
  1969年   5篇
  1966年   3篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
62.
63.
64.
Studies of restorative justice programs continue to provide a review of restorative justice practice and impact. While this body of research is growing, many questions remain regarding the impact of restorative justice in reducing crime. By relying on individual and community-level data, the present study examined how offense type and poverty level influenced program completion and recidivism among juveniles in a restorative justice program. This study also examined the relationship between program completion and recidivism. Findings revealed that status offenders in the restorative justice program were more likely to complete the program and less likely to recidivate than status offenders in the comparison group. In addition, property offenders in the restorative justice program were less likely to recidivate than property offenders in the comparison group. Poverty level at the community-level had a significant influence in both program completion and recidivism.  相似文献   
65.
66.
This paper aims to review randomized experiments in criminology with offending outcomes and reasonably large numbers that were published between 1982 and 2004. A total of 83 experiments are summarized, compared with only 35 published between 1957 and 1981: 12 on policing, 13 on prevention, 14 on corrections, 22 on courts, and 22 on community interventions. Randomized experiments are still relatively uncommon, but there have been more large-scale multi-site experiments and replication programs. There have also been several experiments in which 100 or more places were randomly assigned. Relatively few experiments (only 10 out of 83) were conducted outside the United States. Meta-analyses suggest that prevention methods, correctional therapy, batterer programs, drug courts, juvenile restitution and deterrent policing were effective in reducing offending, while Scared Straight and boot camp programs caused a significant increase in offending.  相似文献   
67.
This paper describes the analytical methodology for the determination of MDMA, MDA, MDEA and MBDB in oral fluid. After a liquid–liquid extraction, the analysis was carried out by high performance liquid chromatography (HPLC), with fluorescence detection. The detector wavelength was fixed at 285 nm for excitation and 320 nm for emission. The mobile phase, a mixture of phosphate buffer (pH = 5) and acetonitrile (75:25), and the column, Kromasil 100 C8 5 μm 250 mm × 4.6 mm, allowed good separation of the compounds in an isocratic mode in only 10 min. The method was validated and showed good limits of detection (2 ng/mL) and quantitation (10 ng/mL) for all the amphetamine derivatives. No interfering substances were detected. A stability study of these compounds in oral fluid stored at three different temperatures (−18, 4 and 20 °C) over 10 weeks was conducted, showing a time-dependent degradation of the four compounds.  相似文献   
68.
69.
Drug trade is widely seen as a phenomenon rather new to the Netherlands. However, at the beginning of the 20th century the Dutch pharmaceutical industries were already extensively involved in the production of both opiates and cocaine, and they went on exporting large quantities of these drugs after the Opium Act (1919) took force. Until the 1960s, arrests were not at all common, and these largely affected minority groups like Chinese opium smokers and black marijuana users. Since then, drug control efforts have increased by leaps and bounds. At first, cannabis was the main target; then the focus turned to heroin, and that was later joined by cocaine. This paper traces the history of the drug trade and drug control in the Netherlands, with emphasis on their development in Amsterdam. The conclusion is reached that, in spite of drastic changes in both drug trade and drug control, certain ideologies, constructs and strategies have remained remarkably stable.  相似文献   
70.
Making a first sketch of philosophical issues arising fromEuropean Community law I want to present a series ofmore or less obvious, and more or less interrelated dilemmas,or even double binds.(i) Deepening the community becomes incompatible withwidening membership. (ii) National states seem bothnecessary for and obstructive in articulating transnationalproblems. (iii) The more democracy is needed as a warrantfor the public exercise of political power in Europe, themore the very concept of democracy on a European scaleevades understanding. (iv) European unity presupposes aunifying rule of law, while member states have radicallydifferent conceptions of this principle. (v) Even the verycore of European integration, the common market, is subjectto two conflicting and, indeed, incompatible doctrines ofcompetition. In explaining the nature of each dilemma I willtry to take my cue from the Maastricht Treaty wherever thisseems suitable. Then I will elaborate on the jurisprudentialproblems involved in it. Finally, each section will be closedby an attempt to state the nature of these problems inphilosophical terms.  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