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   67429篇
  免费   3295篇
各国政治   4479篇
工人农民   2846篇
世界政治   5967篇
外交国际关系   3808篇
法律   31246篇
中国共产党   9篇
中国政治   746篇
政治理论   20680篇
综合类   943篇
  2021年   414篇
  2020年   1161篇
  2019年   1518篇
  2018年   1657篇
  2017年   1958篇
  2016年   2151篇
  2015年   1831篇
  2014年   2102篇
  2013年   10536篇
  2012年   1558篇
  2011年   1654篇
  2010年   1794篇
  2009年   2044篇
  2008年   1710篇
  2007年   1672篇
  2006年   1841篇
  2005年   1756篇
  2004年   1660篇
  2003年   1453篇
  2002年   1502篇
  2001年   1526篇
  2000年   1318篇
  1999年   1215篇
  1998年   1089篇
  1997年   968篇
  1996年   947篇
  1995年   908篇
  1994年   915篇
  1993年   943篇
  1992年   934篇
  1991年   962篇
  1990年   918篇
  1989年   971篇
  1988年   932篇
  1987年   967篇
  1986年   915篇
  1985年   1019篇
  1984年   904篇
  1983年   961篇
  1982年   885篇
  1981年   830篇
  1980年   650篇
  1979年   682篇
  1978年   598篇
  1977年   525篇
  1976年   486篇
  1975年   403篇
  1974年   410篇
  1973年   421篇
  1972年   363篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
81.
Empirical findings indicate that many adult sexual offenders experienced sexual abuse during childhood. It has been suggested that characteristics of offenders' sexual perpetrating behaviors may resemble their own victimization experiences, although there has been minimal empirical investigation in this area. The purpose of the present study was to provide preliminary data on the relationship between childhood sexual abuse and characteristics of sexual offending behavior. A sample of adult male sexual offenders with histories of sexual abuse completed the Sexual Victimization Survey as well as a measure on their sexual offenses. Such characteristics as the nature of sexual activities, duration and frequency of experiences, and age and relationship of participants were examined. Results showed trends in the hypothesized direction and revealed a variety of similarities between childhood sexual abuse and adult sexual perpetration. Findings of this exploratory study suggest the importance of addressing the nature of victimization in the treatment of sexually abused boys and offenders with histories of sexual abuse.  相似文献   
82.
汉族人群五个STR基因座的多态性调查   总被引:22,自引:9,他引:13  
应用PCR及PAG电泳技术研究了PLA2A、vWA、CYP19、TH和LPL五个基因座的多态性,调查武汉地区汉族无关个体,获得汉族人群的频率分布。五个基因座基因型频率分布与Hardy-Weinberg平衡吻合良好、分别计算基因座的杂合度(H)、个人识别能力(Dp)、非父排除率(PE)和多态性信息总量(PIC)。为法医学应用提供了基础数据。  相似文献   
83.
84.
85.
86.
87.
88.
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   
89.
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   
90.
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   
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