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   2769篇
  免费   151篇
各国政治   223篇
工人农民   183篇
世界政治   393篇
外交国际关系   172篇
法律   1389篇
中国政治   10篇
政治理论   534篇
综合类   16篇
  2023年   26篇
  2022年   19篇
  2021年   43篇
  2020年   73篇
  2019年   108篇
  2018年   143篇
  2017年   167篇
  2016年   168篇
  2015年   106篇
  2014年   151篇
  2013年   434篇
  2012年   131篇
  2011年   106篇
  2010年   73篇
  2009年   69篇
  2008年   103篇
  2007年   112篇
  2006年   114篇
  2005年   102篇
  2004年   97篇
  2003年   82篇
  2002年   79篇
  2001年   53篇
  2000年   51篇
  1999年   36篇
  1998年   28篇
  1997年   24篇
  1996年   21篇
  1995年   26篇
  1994年   17篇
  1993年   17篇
  1992年   13篇
  1991年   9篇
  1990年   11篇
  1989年   14篇
  1988年   9篇
  1987年   9篇
  1986年   4篇
  1985年   6篇
  1984年   8篇
  1983年   9篇
  1982年   5篇
  1979年   3篇
  1976年   3篇
  1975年   3篇
  1974年   5篇
  1973年   3篇
  1972年   4篇
  1967年   7篇
  1966年   3篇
排序方式: 共有2920条查询结果,搜索用时 812 毫秒
991.
Although efforts for investigating and prosecuting child abuse cases have increased little attention has been paid to juror response to child testimony. This paper, developed as part of a pilot study to test a questionnaire for polling jurors' opinions in child sexual abuse cases, analyzes a case in which there was a reversal of outcome at retrial. Poll results of the jurors' opinions suggest the need for testimony from law enforcement and child sexual abuse experts to explain children's perception, memory, and recall of a reported experience.  相似文献   
992.
13C NMR spectroscopy has been used for analysis of fourteen compounds which, according to Swedish laws are defined as narcotic drugs or are substances often found in combination with these drugs. The carbon-13 NMR method seems to be well suited for analysis of complex forensic drug mixtures because no preliminary separation of components is required.  相似文献   
993.
994.
995.
This paper addresses three questions: First, what is the extent of research transfer in natural sciences and engineering among Canadian university researchers? Second, are there differences between various disciplines with regard to the extent of this transfer? And third, what are the determinants of research transfer? To answer these questions, the paper begins by differentiating between technology transfer and knowledge transfer. It then identifies the individual researcher as the unit of analysis of this study and introduces a conceptual framework derived from the resource-based approach of firms. The paper then reviews the literature on each of the factors included in the conceptual framework, beginning with the dependent variable, knowledge transfer. The conceptual framework includes four categories of resources and one category of research attributes that are likely to influence knowledge transfer. Based on a survey of 1,554 researchers funded by the Natural Sciences and Engineering Research Council of Canada (NSERC), comparisons of means of research transfer across research fields were conducted. Multivariate regression analyses were used to identify the determinants of research transfer by research field. The results of these analyses indicate that researchers transferred knowledge much more actively when no commercialization was involved than when there was commercialization of protected intellectual property. This paper thus adds to the relatively scarce evidence about knowledge transfer by examining knowledge transfer from a broader perspective than strict commercialization. The findings of this paper are also interesting for other reasons. We obtained statistical evidence indicating that researchers in certain research fields were much more active in knowledge transfer than those in other fields, thereby pointing to differences in levels of knowledge activities across research fields. Furthermore, we obtained evidence showing that only two determinants explained knowledge transfer in all the six research fields considered in this study, namely, focus of research projects on users’ needs, and linkages between researchers and research users. Statistical evidence obtained indicates that the other determinants that influence knowledge transfer vary from one research field to another, thus suggesting that different policies would be required to increase knowledge transfer in different research fields. The last part of the paper outlines the implications of the regression results for theory building, public policy and future research.  相似文献   
996.
997.
998.
Despite the fact that there are approximately 1,775 American jails of 99 beds or less, little is known about how these jails function, or the challenges that they confront. This study examined the problem of suicides and attempted suicides in small jails, finding that the prevalence of these incidents is two to five times greater than in their larger counterparts. Net of other factors, jails that had higher rates of admissions, as well as overcrowded facilities had a positive relationship with suicide attempts. We also found that jails that reported higher concentrations of special needs inmates were significantly associated with attempts. Specifically, facilities that had higher levels of long-term inmates were positively associated with suicide attempts. While almost one-fifth of small jails did not use formal suicide assessments at admission, and only slightly more than one-half of these facilities provided annual suicide training to jail officers, these factors were not significantly associated with suicide attempts in 2004. Implications for future research and practice are outlined.  相似文献   
999.
This paper contributes to the study of public value management (PVM). PVM is distinguished from other approaches to public administration in its focus on establishing community networks and collaborative capacity building for the creation of public value. We explore PVM through a case study of a public–community sector partnership strategy called the positive behaviour framework (PBF), a state government initiative designed to transform services for people with disabilities. The development and implementation of the PBF is analysed via a transitional change or ‘sector awareness’ model. Each phase of the model is illustrated through ‘positive stories’ that depict key moments in the change process and in the activities that public sector managers employed to raise awareness, build capacity, and promote collaboration. We discuss the implications of the study for disability sector change management and for the further study of the PVM approach to public sector administration.  相似文献   
1000.
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