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   383篇
  免费   9篇
  国内免费   1篇
教育   341篇
科学研究   5篇
各国文化   3篇
体育   20篇
文化理论   1篇
信息传播   23篇
  2022年   3篇
  2020年   4篇
  2019年   5篇
  2018年   15篇
  2017年   12篇
  2016年   7篇
  2015年   2篇
  2014年   9篇
  2013年   101篇
  2012年   7篇
  2011年   6篇
  2010年   11篇
  2009年   8篇
  2008年   9篇
  2007年   7篇
  2006年   8篇
  2005年   5篇
  2004年   19篇
  2003年   8篇
  2002年   4篇
  2001年   4篇
  2000年   5篇
  1999年   6篇
  1998年   2篇
  1997年   9篇
  1996年   10篇
  1995年   4篇
  1994年   8篇
  1993年   10篇
  1992年   14篇
  1991年   5篇
  1990年   12篇
  1989年   7篇
  1988年   6篇
  1987年   4篇
  1986年   2篇
  1984年   3篇
  1983年   2篇
  1982年   3篇
  1980年   4篇
  1979年   4篇
  1978年   2篇
  1977年   3篇
  1976年   2篇
  1975年   2篇
  1974年   2篇
  1970年   1篇
  1968年   3篇
  1967年   1篇
  1966年   1篇
排序方式: 共有393条查询结果,搜索用时 15 毫秒
311.
312.
313.
314.
Substantial investments were made in population based biobanks over the past decade. Ethnocultural community members are both sponsors and beneficiaries of biobanks. In addition, the success of biobank projects depends on community support and participation. Yet there are few empirical data on views, perceptions and interests of ethnocultural communities on biobanks. This silent gap in genomics, ethics and policy literatures has to be addressed. We conducted a qualitative research study with in-depth interviews of ethnocultural community leaders (e.g., members of the Canadian Parliament, school commissioners) on their perspectives concerning population specific genomics research and biobanks. An equal partnership model where public is not only informed, but also involved in decision-making processes was perceived as an essential democratic requisite. These empirical data on ethnocultural community leaders' views, interests and perceptions identify several key socio-cultural and ethical factors that can be decisive for effective and sustainable community involvement in biobanks.  相似文献   
315.
316.
317.
Given limited funding for school-based science education, non-school-based programs have been developed at colleges and universities to increase the number of students entering science- and health-related careers and address critical workforce needs. However, few evaluations of such programs have been conducted. We report the design and methods of a controlled trial to evaluate the Stanford Medical Youth Science Program’s Summer Residential Program (SRP), a 25-year-old university-based biomedical pipeline program. This 5-year matched cohort study uses an annual survey to assess educational and career outcomes among four cohorts of students who participate in the SRP and a matched comparison group of applicants who were not chosen to participate in the SRP. Matching on sociodemographic and academic background allows control for potential confounding. This design enables the testing of whether the SRP has an independent effect on educational- and career-related outcomes above and beyond the effects of other factors such as gender, ethnicity, socioeconomic background, and pre-intervention academic preparation. The results will help determine which curriculum components contribute most to successful outcomes and which students benefit most. After 4 years of follow-up, the results demonstrate high response rates from SRP participants and the comparison group with completion rates near 90 %, similar response rates by gender and ethnicity, and little attrition with each additional year of follow-up. This design and methods can potentially be replicated to evaluate and improve other biomedical pipeline programs, which are increasingly important for equipping more students for science- and health-related careers.  相似文献   
318.
319.
320.
This paper is adapted from a keynote address given to the AUA Annual Conference, held at Warwick 14–16 March 2005  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