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   3827篇
  免费   64篇
各国政治   108篇
工人农民   118篇
世界政治   173篇
外交国际关系   151篇
法律   2819篇
中国政治   28篇
政治理论   456篇
综合类   38篇
  2020年   38篇
  2019年   40篇
  2018年   61篇
  2017年   48篇
  2016年   74篇
  2015年   31篇
  2014年   55篇
  2013年   306篇
  2012年   97篇
  2011年   140篇
  2010年   84篇
  2009年   72篇
  2008年   120篇
  2007年   130篇
  2006年   131篇
  2005年   96篇
  2004年   127篇
  2003年   120篇
  2002年   119篇
  2001年   157篇
  2000年   143篇
  1999年   111篇
  1998年   23篇
  1995年   22篇
  1994年   25篇
  1993年   30篇
  1992年   75篇
  1991年   89篇
  1990年   91篇
  1989年   92篇
  1988年   101篇
  1987年   98篇
  1986年   83篇
  1985年   79篇
  1984年   68篇
  1983年   62篇
  1982年   28篇
  1981年   24篇
  1979年   38篇
  1978年   40篇
  1977年   27篇
  1976年   32篇
  1975年   34篇
  1974年   40篇
  1973年   39篇
  1972年   37篇
  1971年   40篇
  1970年   41篇
  1969年   34篇
  1968年   32篇
排序方式: 共有3891条查询结果,搜索用时 15 毫秒
961.
962.
963.
964.
965.
966.
967.
The number of ongoing terror plots increases with the duration of time from plot initiation until plot execution or interdiction (whichever comes first), yet no estimate of the probability distribution governing terror plot duration has appeared in the open literature. To remedy this gap, jihadi terror plots in the United States were identified from terrorism-related indictments that occurred between 11 September 2001 and 30 June 2011 in addition to successful attacks. From a review of indictments, affidavits, and other publicly available information, it was possible to identify lower and upper bounds for the initiation date of the plot in question as well as the ending date corresponding to either the arrest of the suspect(s) eventually convicted or an attempted/actual act of terror. These observations enable estimation of the duration distribution of jihadi terror plots in the United States accounting for the censoring and truncation effects inherent with these data (technical details appear in the Appendix). The estimated mean plot duration equals 270 days (standard error of mean 40 days), while 95 percent of all plots are estimated to fall between 33 and 750 days. These estimates suggest that on average, approximately three ongoing terror plots have been active in the United States at any point since 11 September 2001.  相似文献   
968.
This article deals with some of the psychodynamics of terrorism. The act of terrorism, the use of force to produce a fearful state of mind, is discussed with the distinctions drawn between target and victim, demands and aims. Those involved in the terrorist act include the terrorist, the victim, the target, and the audience. Topics dealt with include terrorism as the pursuit of the absolute end, as a response to lack of self‐esteem, as a promotion of a renewed sense of masculinity, as a reaction‐formation to positive feelings toward the target, and as a kind of symbol‐magic or sacrament of violence. Recommendations for dealing with acts of terrorism are included. This article will appear in a forthcoming book.  相似文献   
969.
970.
Previous studies regarding the relationship of the family environment to children's involvement in bully/victim problems at school primarily focused on children's perceptions of family dimensions. No studies were known using data from multiple reporters within 1 family (parents and children) on family characteristics of bully/victim problems. The aim of this study was to investigate differences between families of victims, bullies, bully/victims, and noninvolved children on family functioning, child-rearing practices, and problem-solving strategies in hypothetical conflict situations and perception differences between children and their parents on those dimensions. The findings revealed important perception differences between children and their parents, with parents holding up a more positive picture of their family. Important differences between families of bullies, victims, and bully/victims were documented looking at the family functioning and parent–child interactions from the perspective of the children. In contrast, almost no differences between the groups were observed if parents' reports were considered. Discussion leads to suggestions for further antibullying interventions at the school.  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