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   71551篇
  免费   3322篇
各国政治   4544篇
工人农民   2973篇
世界政治   6321篇
外交国际关系   3910篇
法律   34311篇
中国共产党   11篇
中国政治   752篇
政治理论   21104篇
综合类   947篇
  2021年   414篇
  2020年   1185篇
  2019年   1540篇
  2018年   1718篇
  2017年   2049篇
  2016年   2228篇
  2015年   1847篇
  2014年   2126篇
  2013年   10636篇
  2012年   1705篇
  2011年   1817篇
  2010年   1880篇
  2009年   2109篇
  2008年   1854篇
  2007年   1831篇
  2006年   1948篇
  2005年   1846篇
  2004年   1733篇
  2003年   1577篇
  2002年   1586篇
  2001年   1807篇
  2000年   1560篇
  1999年   1359篇
  1998年   1157篇
  1997年   1030篇
  1996年   989篇
  1995年   950篇
  1994年   981篇
  1993年   988篇
  1992年   1043篇
  1991年   1077篇
  1990年   1005篇
  1989年   1072篇
  1988年   1045篇
  1987年   1062篇
  1986年   1048篇
  1985年   1097篇
  1984年   980篇
  1983年   1044篇
  1982年   935篇
  1981年   889篇
  1980年   695篇
  1979年   742篇
  1978年   610篇
  1977年   559篇
  1976年   519篇
  1975年   439篇
  1974年   435篇
  1973年   437篇
  1972年   390篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
271.
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   
272.
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   
273.
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   
274.
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   
275.
276.
277.
278.
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   
279.
280.
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