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   81965篇
  免费   3335篇
各国政治   4691篇
工人农民   3244篇
世界政治   6938篇
外交国际关系   4048篇
法律   42759篇
中国共产党   12篇
中国政治   791篇
政治理论   21868篇
综合类   949篇
  2021年   442篇
  2020年   1213篇
  2019年   1566篇
  2018年   1876篇
  2017年   2187篇
  2016年   2380篇
  2015年   1902篇
  2014年   2165篇
  2013年   10845篇
  2012年   1985篇
  2011年   2204篇
  2010年   2074篇
  2009年   2244篇
  2008年   2178篇
  2007年   2170篇
  2006年   2283篇
  2005年   2170篇
  2004年   2044篇
  2003年   1870篇
  2002年   1879篇
  2001年   2461篇
  2000年   2139篇
  1999年   1813篇
  1998年   1334篇
  1997年   1123篇
  1996年   1098篇
  1995年   1057篇
  1994年   1123篇
  1993年   1107篇
  1992年   1311篇
  1991年   1359篇
  1990年   1292篇
  1989年   1340篇
  1988年   1324篇
  1987年   1311篇
  1986年   1351篇
  1985年   1349篇
  1984年   1196篇
  1983年   1197篇
  1982年   1014篇
  1981年   971篇
  1980年   787篇
  1979年   919篇
  1978年   696篇
  1977年   623篇
  1976年   570篇
  1975年   526篇
  1974年   559篇
  1973年   538篇
  1972年   456篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
94.
95.
96.
Fear of victimization may have consequences for subjective well-being. I develop and test a model linking fear of victimization to subjective health. I hypothesize that two processes link fear to subjective health-psychological and behavioral. Specifically, I hypothesize that fear of victimization increases psychological distress, and fear decreases outdoor physical activity, especially walking. High levels of psychological distress and low levels of walking, in turn, are associated with poor self-reported health. I find empirical support for the hypothesized processes in a representative national sample of 2031 adults aged 18 to 90 interviewed by telephone in 1990. The negative association between fear and health is explained largely by psychological distress and walking. However, a significant direct effect remains. I conclude with suggestions for future research linking crime and health, focusing on the need for collecting information on community disorganization. Community context is likely the ultimate exogenous variable-the one that sets in motion the destructive cycle of fear, distress, inactivity, and poor health described here.  相似文献   
97.
Community-based delinquency prevention programs, designed to work with youth and families before they become involved with the official court process, are relatively rare. Likewise, few studies have been published concerninge valuative research on such programs. This article reviews some background on program concepts, describes the operations of the Oakland County Probate Court Youth Assistance casework services program, and reports the results of a comprehensive program evaluation project. The findings suggest that prevention programming is one effective strategy to aid in reducing the likelihood of more costly court interventions. Recommendations for program development are offered.  相似文献   
98.
Stab wounds were made in parenchymatous organs (e.g. liver, spleen, kidneys, lungs) using a variety of instruments. The shape of the resulting canal was investigated by X-ray analysis after introduction of an X-ray contrast medium. The best contrast was obtained using a contrast medium containing barium. The shape of the canal gave a direct representation of the outline of the instrument used. The width of the canal was however, always several millimeters smaller than the corresponding blade of the instrument. The position of the blade back in single-edged blades could be demonstrated with stronger contrast.  相似文献   
99.
The lungs of 79 children who had died between the ages of 1 week and 2 years old were histologically examined. 59 of these children could be categorized as cases of Sudden Infant Death because of the history and postmortem findings. In the remaining 20 cases a definite cause of death could be established. This is the same collective on which the histological investigations of the lymphatic tissue has been carried out. Morphological changes which are typical for a virus pneumonia were found in a substantially higher frequency in the cases of Sudden Infant Death than in the control cases. The validity of these findings and their possible significance for the cause of death are discussed.  相似文献   
100.
Conclusion With the passage of the Administrative Dispute Resolution Act, the stage was set for innovation and change in federal agencies. Now, part way into the five-year life of the Act, a new administration has the potential to encourage even wider use of ADR at the federal level, providing still more examples from which to develop a clearer sense of best practice. Additional funds, both for ACUS and individual agencies, are vital to providing the level of experimentation, innovation, and documentation needed to ensure success.MIT ProfessorLawrence E. Susskind is director of the MIT-Harvard Public Disputes Program, 512 Pound Hall, Harvard Law School, Cambridge, Mass. 02138.Eileen F. Babbitt is associate director of the Public Disputes Program.Phyllis N. Segal is a practicing mediator with Endispute, Incorporated.The authors would like to acknowledge the federal dispute resolution specialists who contributed greatly to our work by providing interviews and materials for this article: Cathy Costantino of FDIC; David Batson of EPA; John Settle and Ron Walczak of HHS; David Drabkin of DLA; Jim Jones of DOL; Sheldon Guttman of FCC; Charles Pou of ACUS; Jeff Domber of GSA; and Diane Liff of DOT.  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