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   13390篇
  免费   441篇
各国政治   675篇
工人农民   584篇
世界政治   858篇
外交国际关系   392篇
法律   8348篇
中国共产党   4篇
中国政治   85篇
政治理论   2776篇
综合类   109篇
  2020年   168篇
  2019年   208篇
  2018年   295篇
  2017年   329篇
  2016年   320篇
  2015年   243篇
  2014年   245篇
  2013年   1466篇
  2012年   362篇
  2011年   344篇
  2010年   294篇
  2009年   311篇
  2008年   390篇
  2007年   351篇
  2006年   383篇
  2005年   344篇
  2004年   351篇
  2003年   315篇
  2002年   320篇
  2001年   436篇
  2000年   414篇
  1999年   315篇
  1998年   185篇
  1997年   172篇
  1996年   149篇
  1995年   157篇
  1994年   149篇
  1993年   161篇
  1992年   271篇
  1991年   279篇
  1990年   269篇
  1989年   261篇
  1988年   242篇
  1987年   257篇
  1986年   273篇
  1985年   267篇
  1984年   226篇
  1983年   241篇
  1982年   146篇
  1981年   139篇
  1980年   118篇
  1979年   150篇
  1978年   129篇
  1977年   105篇
  1976年   94篇
  1975年   104篇
  1974年   119篇
  1973年   116篇
  1972年   101篇
  1969年   81篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
921.
922.
923.
924.
925.
926.
Eight Y chromosome short tandem repeat (STR) polymorphisms (DYS19, DYS385, DYS389I, DYS389II, DYS390, DYS391, DYS392, and DYS393) were analyzed in the sample of 117 unrelated Albanian males living in Kosovo. A general STR allelic frequency pattern in the Albanian population from Kosovo corresponds to other European populations. Fourty six haplotypes were observed in single copy. The most frequent haplotypes were (DYS19-DYS385-DYS389I-DYS389II-DYS390-DYS391-DYS392-DYS393) 14-11/11-13-29-24-11-13-13 (10.26%), 14-14/17-12-28-24-10-11-12 (9.40%), 13-16/18-13-30-24-10-11-13 (9.40%), and 14-17/17-13-31-24-10-11-13 (9.40%).  相似文献   
927.
The actuarial Violence Risk Appraisal Guide (VRAG) was developed for male offenders where it has shown excellent replicability in many new forensic samples using officially recorded outcomes. Clinicians also make decisions, however, about the risk of interpersonal violence posed by nonforensic psychiatric patients of both sexes. Could an actuarial risk assessment developed for male forensic populations be used for a broader clientele? We modified the VRAG to permit evaluation using data from the MacArthur Violence Risk Assessment Study that included nonforensic male and female patients and primarily self-reported violence. The modified VRAG yielded a large effect size in the prediction of dichotomous postdischarge severe violence over 20 and 50 weeks. Accuracy of VRAG predictions was unrelated to sex. The results provide evidence about the robustness of comprehensive actuarial risk assessments and the generality of the personal factors that underlie violent behavior.  相似文献   
928.
929.
A curious ownership structure is found in Northern Europe—foundations that own and operate business companies. The foundations are non-profit entities, they have no members and no owners, and they cannot be dissolved. In many cases, these entities control more than 50% of the votes in successful international companies. Obviously, this structure completely blocks the market for corporate control, but it also violates other basic principles of agency theory and corporate finance. Nevertheless, we present evidence that a sample of foundation-owned companies listed on the Copenhagen Stock Exchange are at least as efficient as other listed companies in terms of risk adjusted stock returns, accounting returns and Tobins Q. Thus, they question whether profit-seeking ownership is a necessary condition for competitive enterprise.JEL Classification: D23, G34, L31  相似文献   
930.
This brief report explores dating violence by comparing three groups of male college students (nonabusive, psychologically abusive only, and physically abusive). These men were compared on measures of impulsivity, problems with alcohol, life satisfaction, anger management skills, history of witnessing abuse, history of experiencing abuse, and relationship satisfaction. Data for this analysis were obtained from a sample of 115 male college students. Differences between the three groups of men were found in the levels of problems with alcohol, relationship satisfaction, and anger management skills. Anger management skills best differentiated the three groups of men leading to the conclusion that dating violence prevention and intervention strategies with male college students should address anger management skills.  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