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   72766篇
  免费   3326篇
各国政治   4663篇
工人农民   3001篇
世界政治   6437篇
外交国际关系   3981篇
法律   34878篇
中国共产党   11篇
中国政治   763篇
政治理论   21384篇
综合类   974篇
  2021年   410篇
  2020年   1185篇
  2019年   1538篇
  2018年   1734篇
  2017年   2060篇
  2016年   2252篇
  2015年   1855篇
  2014年   2141篇
  2013年   10897篇
  2012年   1721篇
  2011年   1850篇
  2010年   1918篇
  2009年   2136篇
  2008年   1886篇
  2007年   1879篇
  2006年   1988篇
  2005年   1880篇
  2004年   1784篇
  2003年   1629篇
  2002年   1653篇
  2001年   1833篇
  2000年   1590篇
  1999年   1397篇
  1998年   1185篇
  1997年   1055篇
  1996年   1010篇
  1995年   968篇
  1994年   996篇
  1993年   1002篇
  1992年   1060篇
  1991年   1096篇
  1990年   1017篇
  1989年   1090篇
  1988年   1061篇
  1987年   1074篇
  1986年   1064篇
  1985年   1107篇
  1984年   987篇
  1983年   1060篇
  1982年   945篇
  1981年   900篇
  1980年   704篇
  1979年   747篇
  1978年   617篇
  1977年   565篇
  1976年   529篇
  1975年   446篇
  1974年   447篇
  1973年   444篇
  1972年   394篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
281.
Prior studies of recidivism have focused almost exclusively on individual‐level characteristics of offenders and their offenses to explore the correlates of reoffending. Notably absent from these studies are measures reflecting the neighborhood contexts in which individuals live. The current research addresses this shortcoming. Using data on a sample of ex‐offenders in Multnomah County, Oregon (Portland and surrounding area) in conjunction with 2000 census data, we answer two questions. First, which individual‐level factors influence rates of recidivism? Second, to what extent does neighborhood socioeconomic status account for variation in the reoffending behavior of ex‐prisoners that is not explained by their individual‐level characteristics? We find that those who return to disadvantaged neighborhoods recidivate at a greater rate while those who return to resource rich or affluent communities recidivate at a lesser rate, controlling for individual‐level factors.  相似文献   
282.
Das deutsche Bodenschutzrecht ist angesichts seines geringen Anwendungsbereiches sowie seiner sehr lückenhaften und zudem vollzugsunfreundlichen Konkretisierung in Grenzwerten h?ufig wenig effektiv. Diese These verfolgt der vorliegende Beitrag anhand eines besonders wesentlichen, in der politischen, juristischen und naturwissenschaftlichen Debatte bisher kaum beachteten gesundheits- und umweltrelevanten Faktors: der düngungsbedingten Belastung von B?den durch Uraneintr?ge. Dies verhilft zugleich zu einer n?heren Bestimmung der konkurrierenden Anwendungsbereiche verschiedener Umweltgesetze.  相似文献   
283.
Offender assessment and classification is becoming an increasingly important part of correctional supervision and intervention. Over the last several decades, several different methods and “generations” of offender classification have emerged. Of most value appear to be third-generation, actuarial, dynamic risk/need assessments. With any new correctional strategy, however, there is a need to investigate the use of these risk/need assessments on offender subgroups in order to inform issues, such as reliability and prevalence of criminogenic risk factors. The present study utilized data that were gathered using the Level of Service Inventory-Revised (LSI-R). Results and comparisons of these assessments were investigated and presented for Native American and non-Native American offenders as well as male and female offenders. Discussion of the results, implications, and recommendations for further research are presented.  相似文献   
284.
Esophageal and tracheal fistulas, which occur in 0.05% of medicolegal autopsies, were demonstrated in three cases by a postmortem radiographic technique using silicone rubber/lead oxide as a contrasting medium that vulcanizes at room temperature. In one 83-year-old male, a tracheoesophageal fistula was detected, which had developed after surgical repair of an esophageal rupture caused by a flexible fiberoptic endoscope. In a second case, carcinoma of the esophagus in a 78-year-old male had eroded the trachea and arcus of the aorta creating a fatal tracheoesophagoaortic fistula. In a third case, 55-year-old female developed a tracheobrachicephalic artery fistula as a result of an infiltrating cystic adenocarcinoma of the trachea, resulting in a fatal hemorrhage into the trachea. The results of this study indicate that diagnostic radiologic methods using a vulcanized contrasting medium are useful in supplementing normal dissection in autopsy cases with suspected fistulas of the esophagus or trachea.  相似文献   
285.
286.
287.
288.
Local government reforms in contemporary Russia are placed in the broader contexts of political reform under Putin and the historical relationship between local administration and the state. Reforms of local government thus help illuminate the architecture of contemporary state building in Russia and the degree to which contemporary Russia perpetuates political traditions. This study reviews the antecedent action in local government prior to the Putin era. It then examines the Kozak Commission and the new law on local government, assessing the strengths and weaknesses of these reforms. Finally, this study examines the challenges of implementing the reforms and what these challenges tell us about devolution and centralisation under Putin.  相似文献   
289.
290.
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