全文获取类型
收费全文 | 13390篇 |
免费 | 441篇 |
专业分类
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 |
出版年
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.
Robino C Varacalli S Gino S Chatzikyriakidou A Kouvatsi A Triantaphyllidis C Di Gaetano C Crobu F Matullo G Piazza A Torre C 《Forensic science international》2004,146(1):61-64
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.
Applying a forensic actuarial assessment (the Violence Risk Appraisal Guide) to nonforensic patients
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