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   7886篇
  免费   204篇
各国政治   415篇
工人农民   235篇
世界政治   576篇
外交国际关系   284篇
法律   4804篇
中国政治   43篇
政治理论   1665篇
综合类   68篇
  2020年   75篇
  2019年   100篇
  2018年   150篇
  2017年   133篇
  2016年   141篇
  2015年   156篇
  2014年   155篇
  2013年   960篇
  2012年   207篇
  2011年   209篇
  2010年   220篇
  2009年   222篇
  2008年   212篇
  2007年   222篇
  2006年   244篇
  2005年   223篇
  2004年   190篇
  2003年   165篇
  2002年   174篇
  2001年   295篇
  2000年   186篇
  1999年   163篇
  1998年   101篇
  1997年   97篇
  1996年   75篇
  1995年   83篇
  1994年   79篇
  1993年   85篇
  1992年   125篇
  1991年   152篇
  1990年   130篇
  1989年   154篇
  1988年   134篇
  1987年   159篇
  1986年   150篇
  1985年   153篇
  1984年   141篇
  1983年   140篇
  1982年   112篇
  1981年   101篇
  1980年   98篇
  1979年   100篇
  1978年   82篇
  1977年   65篇
  1976年   66篇
  1975年   66篇
  1974年   71篇
  1973年   67篇
  1972年   55篇
  1969年   56篇
排序方式: 共有8090条查询结果,搜索用时 15 毫秒
41.
42.
This methodological paper presents the utility of survival analysis methods to provide age adjustment in the analysis of domestic violence data. These methods improve the estimation of lifetime probability of domestic violence, improve identification of patterns of first victimization over the lifespan, and provide methods of testing risk factors for first victimization while adjusting for the respondents' age. Most importantly, these methods allow a new investigation of recall bias. Results suggest that lifetime probability of abuse may have been substantially underestimated in previous studies because of problems in recall/disclosure encountered by middle-aged women.  相似文献   
43.
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   
44.
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   
45.
46.
47.
48.
49.
50.
The concentration of thyreoglobulin (tg) was determined for death caused by hanging, strangulation by ligature, and throttling. Cases of sudden death (traumatic aortic rupture, penetrating wounds of the heart) were used for comparison. The mean values in cases of hanging (149.9±202.3 ng/ml), strangulation by ligature (193.1±173.3), manual strangulation (561.6±173.9) are distinguishable from violent acute deaths (23.3±27.6) and living healthy individuals (17.3±16.1). By means of statistical comparisons, significant differences were found between throttling and strangulation by ligature and between throttling and hanging (adjusted P<0.001). In connection with examination of the bodies high tg values can be regarded as a vital reaction in obstructive asphyxia.  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