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   4948篇
  免费   70篇
  国内免费   20篇
教育   3340篇
科学研究   634篇
各国文化   29篇
体育   379篇
综合类   6篇
文化理论   33篇
信息传播   617篇
  2022年   37篇
  2021年   45篇
  2020年   85篇
  2019年   120篇
  2018年   154篇
  2017年   193篇
  2016年   154篇
  2015年   116篇
  2014年   157篇
  2013年   781篇
  2012年   131篇
  2011年   136篇
  2010年   121篇
  2009年   102篇
  2008年   113篇
  2007年   134篇
  2006年   103篇
  2005年   72篇
  2004年   86篇
  2003年   79篇
  2002年   62篇
  2001年   104篇
  2000年   130篇
  1999年   89篇
  1998年   72篇
  1997年   63篇
  1996年   62篇
  1995年   42篇
  1994年   45篇
  1993年   33篇
  1992年   75篇
  1991年   68篇
  1990年   60篇
  1989年   62篇
  1988年   74篇
  1987年   58篇
  1986年   78篇
  1985年   70篇
  1984年   55篇
  1983年   69篇
  1982年   53篇
  1981年   40篇
  1980年   29篇
  1979年   52篇
  1978年   49篇
  1977年   37篇
  1976年   41篇
  1975年   31篇
  1974年   33篇
  1973年   33篇
排序方式: 共有5038条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
995.
996.
In a typical science degree, little emphasis is placed on the need for scientists to make judgements about evidence and little value is placed on the development of students' opinions about science, with the focus largely on assessment of declarative knowledge. Yet it is the ability to evaluate evidence that is crucial to the development of the student as a scientist. This study assesses the impact on students' conceptions of science of a course that aims to engage students in discussion and reflection on what scientists do and on their own learning about science. Analysis of written reflective assignments from the three years the course has been run shows that participants become more confident in their expression of opinions about science and also develop a more mature view of science and its inherent uncertainty. It appears that a critical factor enabling this development is the way the course activities are designed to explicitly value students' opinions and to provide a supportive environment in which they can be expressed and contested.  相似文献   
997.
This paper investigates the conditions when a research joint venture (RJV) will involve a university as a research partner. We hypothesize that larger RJVs are more likely to invite a university to join the venture as a research partner than smaller RJVs because larger ventures are less likely to expect substantial additional appropriability problems to result because of the addition of a university partner and because the larger ventures have both a lower marginal cost and a higher marginal value from university R&D contributions to the ventures’ innovative output. We test this hypothesis using data from the COoperative REsearch (CORE) database, and those data confirm the hypothesis.  相似文献   
998.
FOREWORD     
ABSTRACT

The study reported in this paper examined the types of professional-development activities, support systems, and organizational structures necessary for community college faculty to make transitions from traditional teaching to Web-based teaching. Results indicate that (a) instructional change can by initiated through sustained professional development; (b) change is more meaningful and effective when it occurs in context over a sustained period of time; (c) faculty can embrace innovations when supported by knowledgeable professionals and their peers; and (d) students welcome the use of Web-based components in course work. The implications for practice may be useful to those wishing to increase faculty's online instructional competence.  相似文献   
999.
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