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   22393篇
  免费   686篇
  国内免费   5篇
各国政治   1047篇
工人农民   955篇
世界政治   1453篇
外交国际关系   788篇
法律   14223篇
中国共产党   6篇
中国政治   188篇
政治理论   4209篇
综合类   215篇
  2020年   286篇
  2019年   342篇
  2018年   430篇
  2017年   507篇
  2016年   513篇
  2015年   373篇
  2014年   422篇
  2013年   2159篇
  2012年   563篇
  2011年   600篇
  2010年   512篇
  2009年   523篇
  2008年   633篇
  2007年   690篇
  2006年   672篇
  2005年   594篇
  2004年   575篇
  2003年   619篇
  2002年   536篇
  2001年   887篇
  2000年   731篇
  1999年   654篇
  1998年   334篇
  1997年   234篇
  1996年   266篇
  1995年   221篇
  1994年   267篇
  1993年   255篇
  1992年   415篇
  1991年   479篇
  1990年   468篇
  1989年   405篇
  1988年   445篇
  1987年   417篇
  1986年   460篇
  1985年   411篇
  1984年   350篇
  1983年   323篇
  1982年   246篇
  1981年   274篇
  1980年   189篇
  1979年   285篇
  1978年   199篇
  1977年   169篇
  1976年   144篇
  1975年   199篇
  1974年   208篇
  1973年   180篇
  1972年   151篇
  1971年   141篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
Incarceration rates in the United States dramatically increased over the past several decades. This trend has drawn significant academic attention to prison overcrowding and its potential effect on inmate misconduct. The empirical relationship between inmate misconduct and overcrowding, however, is less than clear. To be sure, studies indicating positive, negative, and null relationships can all be found in the literature. The current research subjects this body of literature to a meta-analysis in an effort to: (1) clarify the direction and strength of the relationship between overcrowding and rates of prison misconduct across all studies, and (2) to uncover the degree to which variation in research outcomes can be attributed to methodological differences across studies. Results indicate that prison crowding has little substantive impact on inmate misconduct. Implications of the findings are discussed in detail.  相似文献   
132.
133.
134.
Those in need of employment and training programs face a variety of difficulties. Accordingly, the federal response to labor market problems has encompassed a wide range of initiatives. These include preparing people for work (through skills training, the Job Corps, work experience programs); improving the functioning of the labor market (through matching workers with jobs, establishing a minimum wage, and the Targeted Jobs Tax Credit program); and preventing discrimination. Unresolved issues in these areas are examined. They include who should be targeted for federal assistance, which levels of government can best operate programs, how public versus private efforts should be balanced, how limited resources should be distributed, and how the welfare versus work question should be resolved.  相似文献   
135.
Observations of high velocity bloodspatter on adjacent objects   总被引:1,自引:0,他引:1  
In a recent homicide investigation, high velocity backspatter was observed on the sleeve cuff of the accused. These minute droplets were discovered only after microscopic examination and were limited in number. A study was initiated to determine if these were truly backspatter droplets or transferred blood produced from light contact with a bloody item. It was observed that the backspattered blood was primarily limited to contact or near contact shots. An exception was a shot into an already bloody surface. It was found that backspattered blood would deposit on the shooter's shirt sleeve irrespective of the weave pattern. Transferred blood was observed only on the fiber tops. This information was found to be useful in reconstruction of events in suicides as well as possible homicides.  相似文献   
136.
137.
Book Reviews in This Article:
Getting Rid of Patients: Contradictions in the Socialization of Physicians . By Terry Mizrahi
Physicians and Social Change . By John Colombotos and Corinne Kirchner
Changing Values in Medicine . Edited by Eric J. Cassell and Mark Siegler
Professional Ethics and Primary Care Medicine: Beyond Dilemmas and Decorum . By Harmon L. Smith and Larry R. Churchill
Physician—Patient Decision-Making: A Study in Medical Ethics . By Douglas N. Walton
With Dignity: The Search for Medicare and Medicaid . By Sheri I. David
The Dismissal of Students with Mental Disorders. Legal Issues, Policy Considerations, and Alternative Responses .
Courtroom Toxicology . By Marshall Houts, Randall C. Baselt, and Robert H. Cravey  相似文献   
138.
139.
140.
The present study examines the extent to which neighborhood and social psychological influences predict childhood violence among 867 African‐American youth. The results showed that neighborhood affluence was the only neighborhood‐level variable to exert a significant influence on childhood violence. Furthermore, childhood violence was significantly related to social psychological influences, such as adopting a street code, associating with violent peers, parental use of violence, and quality parenting. Overall, the findings suggested that simply living in a violent neighborhood does not produce violent children, but that family, peer, and individual characteristics play a large role in predicting violence in childhood.  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