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   428篇
  免费   20篇
各国政治   23篇
工人农民   62篇
世界政治   36篇
外交国际关系   23篇
法律   204篇
中国政治   5篇
政治理论   90篇
综合类   5篇
  2023年   7篇
  2022年   2篇
  2021年   2篇
  2020年   6篇
  2019年   15篇
  2018年   22篇
  2017年   16篇
  2016年   14篇
  2015年   14篇
  2014年   10篇
  2013年   67篇
  2012年   16篇
  2011年   10篇
  2010年   12篇
  2009年   10篇
  2008年   24篇
  2007年   22篇
  2006年   14篇
  2005年   17篇
  2004年   13篇
  2003年   13篇
  2002年   10篇
  2001年   5篇
  2000年   5篇
  1999年   9篇
  1998年   5篇
  1997年   4篇
  1996年   11篇
  1995年   8篇
  1994年   3篇
  1993年   6篇
  1992年   5篇
  1991年   5篇
  1990年   8篇
  1989年   4篇
  1988年   10篇
  1987年   3篇
  1985年   2篇
  1984年   3篇
  1982年   1篇
  1981年   2篇
  1980年   3篇
  1979年   1篇
  1978年   3篇
  1977年   1篇
  1976年   3篇
  1975年   1篇
  1973年   1篇
排序方式: 共有448条查询结果,搜索用时 15 毫秒
171.
172.
The National Agricultural Library and the Extension Service, US Department of Agriculture, are collaborating on a technology-transfer strategy with the hardwood industry. The strategy is based on the premises that 1) industry associations can serve as vehicles for identifying industry-wide needs, 2) non-traditional research bases are fertile sources of alternative technologies, 3) technology agents can uncover existing technologies and evaluate the feasibility of commercializing them, and 4) state-of-the-art reports and promotion of new cost-saving technologies provide industry with new products and new processes. He has been a program director for Public Technology, Inc. and the executive director of the Federal Laboratory Consortium for Technology Transfer. Dr. Maher is the current president of the Technology Transfer Society's Washington, DC, Chapter.  相似文献   
173.
174.
A recently completed study of the Scottish juvenile justice system, employing a variety of methodological approaches, is used as a source of information on the behavior and attitudes of the lay volunteers who make up children's panels and are responsible for decisions concerning young people who are alleged to have committed an offense or are believed to be in need of care and protection. The reported data relate to the beliefs of panel members as to the causes of delinquency and the objectives of intervention and alternative disposals; the topics they raise for discussion in children's hearings and the factors which influence the decisions they make; and the manner in which they are perceived by the children and parents who have appeared before them.  相似文献   
175.
176.
177.
178.
179.
In the 20 years since the founding of the Journal of Interpersonal Violence, there have been exciting new discoveries on the long-term physical health effects of family violence. As exciting as these discoveries have been, we still know little about why the experience of family violence makes people sick. Some of the most promising areas of study on this topic will be in neuroscience, sleep studies, and cognitive variables such as hostility. Once we understand mechanisms, we can design interventions that can ameliorate these effects.  相似文献   
180.
We analysed deaths certified as due to poisoning in England & Wales, 1968-2000, in children aged <10 years by age, sex, circumstances of death, intent, and agents involved. The number of deaths fell from 165 (20.6 per million children) in 1968 to 30 (4.6 per million) in 2000, a decrease of approximately 80%. The age-specific death rates were similar in boys and girls. The rate was initially much higher, and fell more, in those aged <5 years. Most deaths (n=1923) occurred in fires, and had been attributed to inhaling combustion products. A small number (n=104) occurred in fires resulting from motor vehicle and other transport accidents. From 1979 (use of ICD-9) the coding of some of these deaths changed from poisoning with carbon monoxide to poisoning with 'other gases, fumes or vapours'. These 'fire deaths' do not appear as poisonings in mortality statistics based on a single underlying cause of death, and cannot be tabulated as poisoning in many countries. Fire deaths and deaths coded to accidental, deliberate, or undetermined poisoning (n=702) decreased substantially with time, and by 2000 numbered 14 and 10, respectively. Accidental deaths declined from 151 in 1968 to 23 in 2000, but homicides and open verdicts varied from 5 to 20 per year, with no clear trend. Deaths attributed to carbon monoxide and to 'other gases, fumes or vapours' (mostly fire-related) totalled 2431 (84% of all poisoning deaths). Overall, 10% of these deaths were either certified as homicides or open verdicts. However, homicide or open verdict was recorded in half of the 47 fatal opiate poisonings. Opioids have now superseded antidepressants as the commonest agents encountered in fatal poisoning with drugs in children.  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