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   1002篇
  免费   26篇
各国政治   74篇
工人农民   34篇
世界政治   125篇
外交国际关系   64篇
法律   414篇
中国政治   9篇
政治理论   300篇
综合类   8篇
  2023年   7篇
  2021年   5篇
  2020年   8篇
  2019年   28篇
  2018年   30篇
  2017年   30篇
  2016年   30篇
  2015年   20篇
  2014年   21篇
  2013年   185篇
  2012年   22篇
  2011年   27篇
  2010年   24篇
  2009年   28篇
  2008年   37篇
  2007年   20篇
  2006年   29篇
  2005年   29篇
  2004年   32篇
  2003年   34篇
  2002年   28篇
  2001年   33篇
  2000年   34篇
  1999年   26篇
  1998年   21篇
  1997年   16篇
  1996年   13篇
  1995年   15篇
  1994年   13篇
  1993年   18篇
  1992年   11篇
  1991年   10篇
  1990年   10篇
  1989年   17篇
  1988年   14篇
  1987年   12篇
  1986年   9篇
  1985年   11篇
  1984年   11篇
  1983年   8篇
  1982年   6篇
  1981年   6篇
  1980年   3篇
  1979年   3篇
  1978年   5篇
  1977年   3篇
  1976年   3篇
  1975年   4篇
  1972年   3篇
  1969年   4篇
排序方式: 共有1028条查询结果,搜索用时 15 毫秒
121.
122.
Regions can be considered as “regional innovation systems,” but the question of whether and to what extent technology transfer is taking place at this or other (e.g., national and global) levels remains empirical. The theme issue contains a number of case studies of “regional innovation systems” within the European Union. Other papers elaborate on the pros and cons of the systemic approach to the technology transfer processes involved, or make comparisons across regions. In this introduction, the editors discuss the relations between regional policies, technology and innovation policies, and the integration of these different aspects into (potentially regional) systems of innovation. Under what conditions can “technology transfer” be considered as a mechanism of integration at the regional level?  相似文献   
123.
124.
This study examines how programs sponsored through the National Institute of Standards and Technology's Manufacturing Extension Partnership (MEP) have influenced the organization and delivery of industrial modernization services to small and medium-sized manufacturers in regions in the United States. The study found that increased service coordination has occurred and that this, in turn, has mostly improved the quality and comprehensiveness of assistance delivered to firms. But there are also some costs and drawbacks associated with multi-partner service delivery approaches. The study identifies and examines best practices that can help MEP centers increase the effectiveness of service coordination. This paper draws upon research supported by the U.S. Department of Commerce, National Institute of Standards and Technology under award 50SBNBC8305. The views expressed are the authors' and do not necessarily reflect those of the research sponsor.  相似文献   
125.
126.
Opioid‐related mortality happens, even in healthcare settings. We describe serial postmortem fentanyl blood concentrations in a hospital inpatient who fatally abused transdermal fentanyl. This is a single‐patient case report. A 42‐year‐old man with lymphoma was started on transdermal fentanyl therapy while hospitalized for chronic abdominal pain. The patient was last seen awake 1.3 h prior to being found apneic and cyanotic. During the resuscitation attempt, a small square‐shaped film was removed from the patient's oropharynx. Femoral blood was collected 0.5 and 2 h postmortem, and the measured fentanyl concentration increased from 1.6 to 14 ng/mL. Study limitations include potential laboratory or collection errors and missing data. (i) Providers must be vigilant for signs of fentanyl patch abuse. (ii) Postmortem blood concentrations are not static postmortem, likely secondary to decreasing pH, increased aqueous solubility, and tissue redistribution, and are therefore unlikely to accurately represent antemortem blood concentrations.  相似文献   
127.
128.
Cars     
  相似文献   
129.
Although 'Law in Context' is a well-known motto for law-and-society scholarship, the idea could benefit from closer examination. This paper introduces a principle of `fidelity to context' and suggests that contexts may be transcended by invoking general purposes and principles. These issues have special relevance for contextual analysis of free speech, academic freedom, and other rights and responsibilities. I also consider the relevance of legal pluralism, and the contextual analysis of human rights.  相似文献   
130.
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