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   11212篇
  免费   606篇
各国政治   472篇
工人农民   376篇
世界政治   874篇
外交国际关系   379篇
法律   7396篇
中国共产党   1篇
中国政治   62篇
政治理论   2197篇
综合类   61篇
  2021年   64篇
  2020年   197篇
  2019年   236篇
  2018年   241篇
  2017年   313篇
  2016年   319篇
  2015年   260篇
  2014年   276篇
  2013年   1113篇
  2012年   249篇
  2011年   330篇
  2010年   300篇
  2009年   314篇
  2008年   307篇
  2007年   282篇
  2006年   309篇
  2005年   285篇
  2004年   279篇
  2003年   273篇
  2002年   266篇
  2001年   476篇
  2000年   434篇
  1999年   313篇
  1998年   193篇
  1997年   165篇
  1996年   137篇
  1995年   129篇
  1994年   155篇
  1993年   144篇
  1992年   209篇
  1991年   227篇
  1990年   208篇
  1989年   222篇
  1988年   214篇
  1987年   202篇
  1986年   248篇
  1985年   213篇
  1984年   165篇
  1983年   179篇
  1982年   120篇
  1981年   127篇
  1980年   89篇
  1979年   137篇
  1978年   79篇
  1977年   78篇
  1976年   71篇
  1974年   78篇
  1973年   68篇
  1972年   67篇
  1970年   48篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
Uncertainty and Turnout   总被引:1,自引:0,他引:1  
This article develops a model that simultaneously considersindividual turnout and vote choice while also accounting foruncertainty about candidates. The theoretical development ofthis model implies that the effects of uncertainty on turnoutvary with the strength of individual preferences. Applicationof the model to individual choice in the 1996 American presidentialelection confirms that decreasing uncertainty about the charactertraits of the candidates decreases the probability of abstentionfor individuals with strong preferences but increases the probabilityof abstention for individuals with weak preferences.  相似文献   
912.
Firearm wounds to the head are often fatal and are routinely encountered in the practice of forensic pathology in the United States. Often, the anatomic site of the entrance wound is used to support or refute the manner of death indicated by the scene investigation and/or circumstances of the case. The present retrospective study of 120 fatalities resulting from 140 firearm wounds to the head correlates the anatomic region of the entrance wound and range of fire with the manner of death. Other demographic data analyzed include age, race, and gender of the decedents, as well as evidence of drug and/or ethanol use. It is hoped that this study will provide concrete data to support the largely anecdotal associations between the specific site of entry of firearm injuries to the head and the manner of death.  相似文献   
913.
According to Gottfredson and Hirschi's (1990) A General Theory ofCrime, all illegal activity is the manifestation of a single underlyingcause. The authors argue that inadequate child-rearing causes individualsto develop a similar type of propensity for criminal and analogousbehavior. Gottfredson and Hirschi label this characteristiclow self-control. Six dimensions, which can be identified intheir theory, are suggested to comprise a final low self-controltrait. Further, low self-control is proposed to be an invariantcharacteristic (i.e., its form does not change with the age of theindividual or context in which the person resides). In this research, weevaluate these two propositions. First, the six dimensions are measured andused to determine if a multidimensional model can explain another commonfactor—low self-control—in two samples of individuals (fromdifferent locales) with dissimilar mean ages. Second, low self-control inboth samples is tested for invariance. We test the proposed invariance oflow self-control by examining if the parameter values in a model, which isreflective of Gottfredson and Hirschi's conceptualization of thecharacteristic, differ across the two samples of individuals. The resultssupport both of Gottfredson and Hirschi's propositions. Lowself-control does appear to be a multidimensional characteristic whosedimensions represent another common factor. Low self-control also appears tobe an invariant latent trait that members of these two samplespossess. These tests help to clarify Gottfredson and Hirschi'sconceptualization of low self-control.  相似文献   
914.
The article compares three memoirs of genetically based disability: Lisa Roney's sweet, invisible body, Georgina Kleege's Sight Unseen, and Alice Wexler's Mapping Fate. The essay explores the tension between the narrow and the broad construction of disability, as demonstrated by the 1999 Supreme Court rulings on the ADA and as experienced by these three memoirists. It concludes that the approach of narrative bioethics, as exemplified by such a study of disability and illness narratives, can offer the medical and public policy community a valuable alternative perspective on genetic disability not as an incapacity, but as a set of social relations and practices.  相似文献   
915.
916.
福建省违法犯罪青少年的个性特征研究   总被引:5,自引:0,他引:5  
Li W  Lin JS  Chen DC  Yang C  An JY 《法医学杂志》1999,15(4):211-213
为探讨青少年违法犯罪与个性的关系,采用艾森克个性问卷对621名13-19岁违法犯罪青少年和1371名相应年龄在校学生按不同年龄段和性别进行对照研究,发现16-19岁男性违法犯罪青少年外向性(E)、精神质(P)评分显著高于对照组(P<0.01),13-15岁男性违法犯罪少年精神质(P)、神经质(N)评分显著高于对照组(P<0.01),16-19岁女性违法犯罪青少年神经质(N)评分低于对照组(P<0.05),不同违法犯罪类型之间各个维度无统计学差异,表明外向性、精神质和神经质与男性青少年违法犯罪相关,倾稳性可能与女性青少年违法犯罪有关。  相似文献   
917.
Tang SB  Guo JY  Liu C  Liang SQ  Wang SB 《法医学杂志》1999,15(2):86-8, 127
Using polymerase chain reaction and silver stain, polymorphism and haplotype study of Y-chromosomal multi-STRs loci: DYS19, DYS389I/II, DYS390 were studied. 111 samples of male were collected from Guangzhou area. 5 alleles were determined in DYS19 locus, 4 alleles in DYS389I locus, 5 alleles in DYS389II locus and 5 alleles in DYS390 locus. Compared with other racial populations, differences of distribution of allele frequencies existed significantly. 72 haplotype were present in this study.  相似文献   
918.
919.
920.
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