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   20337篇
  免费   584篇
各国政治   932篇
工人农民   791篇
世界政治   1724篇
外交国际关系   773篇
法律   11623篇
中国共产党   2篇
中国政治   91篇
政治理论   4768篇
综合类   217篇
  2020年   247篇
  2019年   298篇
  2018年   384篇
  2017年   468篇
  2016年   510篇
  2015年   344篇
  2014年   403篇
  2013年   2234篇
  2012年   465篇
  2011年   514篇
  2010年   428篇
  2009年   464篇
  2008年   544篇
  2007年   567篇
  2006年   532篇
  2005年   470篇
  2004年   484篇
  2003年   513篇
  2002年   513篇
  2001年   755篇
  2000年   701篇
  1999年   591篇
  1998年   349篇
  1997年   314篇
  1996年   259篇
  1995年   249篇
  1994年   283篇
  1993年   266篇
  1992年   391篇
  1991年   427篇
  1990年   363篇
  1989年   394篇
  1988年   351篇
  1987年   379篇
  1986年   392篇
  1985年   372篇
  1984年   315篇
  1983年   368篇
  1982年   288篇
  1981年   263篇
  1980年   202篇
  1979年   277篇
  1978年   186篇
  1977年   163篇
  1976年   153篇
  1975年   136篇
  1974年   163篇
  1973年   129篇
  1972年   125篇
  1971年   107篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
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   
122.
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   
123.
124.
Collaborative Environmental Management: What Roles for Government?   总被引:1,自引:0,他引:1  
  相似文献   
125.
The social development model (SDM) is a theory of behavior that has proven useful in explaining the etiology of delinquency, violence, and substance use among adolescents as well as early antisocial behavior among pre-adolescents. A further test of the model is its generalizability across population groups. A section of the SDM representing prosocial influences in the etiology of problem behavior was compared for boys and girls and for children from low- and non low-income families using three waves of child, parent and teacher survey data on a sample of 851 elementary school students. Multiple group structural equation modeling was used to assess differences across groups in both measurement of model constructs and hypothesized structural paths between constructs. The results indicate overall similarity in the reliability of measurement models and validity of structural models.  相似文献   
126.
127.
Criminal justice agencies are organized sequentially — “output” from one agency is “input” to the next — but most scholars argue that criminal justice is not a system in a theoretical sense. In this article, it is argued that general systems theory (GST) reveals important insights into criminal justice structures and functions. Specifically, it is argued that the criminal justice system processes “cases” rather than people, and that the common goal of criminal justice processing is to “close cases so that they stay closed.” It also is argued that processing capacity progressively declines, in that at each system point the subsequent agency cannot input as many cases as the previous agency can output. Each agency therefore experiences “backward pressure” to close cases in order to reduce input to the next agency. Overall, this article highlights that criminal justice agents and agencies are best understood as operating in the context of the larger whole, thus it is concluded that criminal justice is a system in the sense of general systems theory.  相似文献   
128.
129.
130.
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