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   11632篇
  免费   276篇
各国政治   474篇
工人农民   918篇
世界政治   542篇
外交国际关系   357篇
法律   7178篇
中国共产党   3篇
中国政治   58篇
政治理论   2302篇
综合类   76篇
  2020年   108篇
  2019年   145篇
  2018年   591篇
  2017年   617篇
  2016年   509篇
  2015年   165篇
  2014年   157篇
  2013年   968篇
  2012年   309篇
  2011年   557篇
  2010年   581篇
  2009年   449篇
  2008年   518篇
  2007年   488篇
  2006年   257篇
  2005年   242篇
  2004年   262篇
  2003年   229篇
  2002年   219篇
  2001年   266篇
  2000年   267篇
  1999年   193篇
  1998年   120篇
  1997年   126篇
  1996年   120篇
  1995年   121篇
  1994年   110篇
  1993年   112篇
  1992年   184篇
  1991年   200篇
  1990年   180篇
  1989年   181篇
  1988年   162篇
  1987年   180篇
  1986年   176篇
  1985年   164篇
  1984年   163篇
  1983年   173篇
  1982年   99篇
  1981年   91篇
  1980年   77篇
  1979年   112篇
  1978年   78篇
  1977年   79篇
  1976年   60篇
  1975年   59篇
  1974年   63篇
  1973年   73篇
  1972年   63篇
  1968年   53篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Horizontal mergers can be challenged by anti trust authorities under both the US and EU Horizontal Merger Guidelines. More horizontal mergers are unconditionally approved in the US than in the EU. EU merger policy toughened after 1998 but became more in line with US practices after 2004. Differences in merger policies between the US and the EU can be explained by a greater scope of the efficiency argument in the US. The paper argues that firms only want to merge in oligopoly, if they expect to realize substantial merger specific efficiency gains, which counterbalances the price increasing effect of merger.   相似文献   
992.
Modern Ethiopia     
MUSTOE  N. E. 《African affairs》1962,61(244):216-222
This address by the chairman of the Anglo-Ethiopian Societywas given at a joint meeting of the Royal African Society, theRoyal Commonwealth Society and the Anglo-Ethiopian Society onMay 3, 1962. Lt.-Col. Neil McLean, D.S.O., M.P., took the chair  相似文献   
993.
Despite the call to address domestic violence along with child maltreatment, little information exists to guide services for victimized women involved with child welfare. Research shows that victimized women contend with multiple problems stemming from violent victimization. Unfortunately less is known about combinations of needs and resources among victimized women, especially for those involved with child welfare. Through an examination of needs and resources among families with child maltreatment and domestic violence, we aimed to help address this knowledge gap. Needs and resources among 1,229 victimized caregivers were examined using the National Survey of Child and Adolescent Well-being (NSCAW). Using latent class analysis, four distinct multivariate profiles of needs and resources among victimized caregivers were identified. Significant differences were found among the profile groups in the family violence they experienced in the 18 months following child welfare investigations. Based on these findings, we discuss implications for tailored practices to enhance the safety of victimized caregivers involved with child welfare. An earlier version of this paper was presented at the 9th Annual Conference of the Society for Social Work and Research, Miami, Florida in January 2005.  相似文献   
994.
995.
996.
997.
998.
In 16 medical examiner's cases, which were found to be barbiturate-positive by thin-layer chromatographic screening of the liver, blood barbiturate concentrations were determined by gas chromatography. The corresponding vitreous humor samples were screened by the enzyme multiplied immunoassay technique, the EMIT-st serum barbiturate assay. By using the recommended dilution for detecting serum barbiturates, it was possible to detect barbiturates in vitreous humor at a toxic concentration. By using one fourth the amount of diluent, the barbiturates could be detected also at a therapeutic concentration. The EMIT-st assay proved to be useful in the screening for barbiturates in vitreous humor, a material that is readily available in forensic toxicology.  相似文献   
999.
1000.
Research into community corrections officers’ perceptions of the needs of ex-offenders has largely been overlooked. While some empirical research has emerged regarding federal parole officers’ perceptions, it is conceptually incomplete. A gap in the literature remains regarding the concordance or discordance between offenders and community corrections officers’ perceptions of offender needs and the opportunities for success upon release. Using a sample of community corrections officers in Seattle, Washington, this research examined officer perception of ex-offender needs, the value officers’ placed on the specific needs, and the opportunities available for offenders to meet their needs. Differences between officers emerged including the finding that female officers rated needs and challenges for offenders significantly different than male officers. Policy implications of the research are discussed. This research was made possible due to a grant award from the College of Arts and Sciences at Seattle University. This research was first presented at the 2005 Academy of Criminal Justice Sciences Conference in Chicago. We are grateful to Mac Pevey and Keven Bovenkamp from the Washington State Department of Corrections and Bill Corn and Tim McTighe from United States Probation and Pretrial Services for their support, assistance, and for making the study possible. A special thanks to our research assistant Tania Reyes who was instrumental in collecting the data for this investigation.  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