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   22571篇
  免费   690篇
  国内免费   5篇
各国政治   1063篇
工人农民   966篇
世界政治   1467篇
外交国际关系   794篇
法律   14319篇
中国共产党   7篇
中国政治   187篇
政治理论   4246篇
综合类   217篇
  2020年   287篇
  2019年   349篇
  2018年   440篇
  2017年   514篇
  2016年   520篇
  2015年   378篇
  2014年   424篇
  2013年   2183篇
  2012年   567篇
  2011年   604篇
  2010年   517篇
  2009年   527篇
  2008年   634篇
  2007年   694篇
  2006年   674篇
  2005年   597篇
  2004年   583篇
  2003年   622篇
  2002年   540篇
  2001年   888篇
  2000年   731篇
  1999年   661篇
  1998年   342篇
  1997年   238篇
  1996年   273篇
  1995年   223篇
  1994年   267篇
  1993年   257篇
  1992年   419篇
  1991年   481篇
  1990年   471篇
  1989年   406篇
  1988年   447篇
  1987年   423篇
  1986年   462篇
  1985年   413篇
  1984年   355篇
  1983年   324篇
  1982年   246篇
  1981年   278篇
  1980年   191篇
  1979年   288篇
  1978年   202篇
  1977年   168篇
  1976年   145篇
  1975年   199篇
  1974年   206篇
  1973年   179篇
  1972年   152篇
  1971年   141篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
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   
24.
The conventional wisdom in criminology is that adult onset of offending is a rare event. Closer examination of the extant literature that use official records, however, reveals that an average of 50 percent of adult offenders initiate offending at age eighteen or older. Although criminological research has investigated late onset offending in adolescence, there is little research on adult onset offending and the correlates of adult offending. Using police contact and interview data from the 1942 and 1949 birth cohort data from Racine, WI, this study investigated the correlates of crime for adult onset and persistent offenders. The results show that employment is the only correlate to affect the probability of adult offending differently for previously delinquent and nondelinquent offenders. This article concludes by highlighting the neglect of research on adult offenders, specifically the large percentage of adult onset offenders, and calling for more research on this topic.  相似文献   
25.
26.
27.
28.
This article summarizes some of the literature reviewed by the Girls Study Group, which is a federally funded project aimed at assessing the causes of girls’ delinquency as well as evaluating programs to address it. The literature reveals that a number of factors such as family dysfunction, involvement with antisocial peers, and living in disadvantaged neighborhoods are correlated with delinquency for both boys and girls. Some factors, however, are gender sensitive, meaning that either girls are more exposed to a given risk factor than boys or react somewhat differently to a given risk factor. Girls have higher rates of exposure to sexual assault, which is associated with delinquency and, although more research is needed, they are more affected by the impacts of early puberty, when it is coupled with harsh parenting and disadvantaged neighborhoods. This article discusses some implications of the research on correlates of delinquency for programming for girls and makes recommendations for program selection.  相似文献   
29.
The American Law Institute proposes that in contested physical custody cases the court should allocate to each parent a proportion of the child's time that approximates the proportion of time each has spent performing caretaking functions in the past. Examined through the lens of child development research, the approximation rule is unlikely to improve on the best interests standard. It is difficult to apply; is perceived as gender‐biased; creates a new focus for disputing parents; renders a poor estimate of parents’ contributions to their child's best interests; overlooks parents’ intangible, yet significant, contributions to their child's well‐being; and miscalculates the essence of how a child experiences the family. A preferable alternative is a better defined, contemporary best interests standard that accommodates new knowledge and reforms that encourage nonadversarial, individualized resolutions of custody disputes.  相似文献   
30.
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