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   513篇
  免费   10篇
  国内免费   1篇
教育   347篇
科学研究   28篇
各国文化   46篇
体育   27篇
文化理论   2篇
信息传播   74篇
  2023年   3篇
  2020年   9篇
  2019年   12篇
  2018年   14篇
  2017年   15篇
  2016年   14篇
  2015年   11篇
  2014年   12篇
  2013年   112篇
  2012年   9篇
  2011年   6篇
  2010年   8篇
  2009年   19篇
  2008年   11篇
  2007年   14篇
  2006年   9篇
  2005年   21篇
  2004年   22篇
  2003年   12篇
  2002年   7篇
  2001年   7篇
  2000年   15篇
  1999年   14篇
  1998年   3篇
  1997年   3篇
  1996年   6篇
  1995年   10篇
  1993年   3篇
  1991年   5篇
  1990年   4篇
  1989年   6篇
  1988年   4篇
  1987年   3篇
  1986年   5篇
  1985年   6篇
  1983年   4篇
  1981年   3篇
  1980年   3篇
  1978年   7篇
  1977年   3篇
  1975年   6篇
  1973年   4篇
  1971年   3篇
  1946年   3篇
  1943年   4篇
  1935年   2篇
  1934年   2篇
  1933年   3篇
  1929年   3篇
  1928年   3篇
排序方式: 共有524条查询结果,搜索用时 0 毫秒
521.
This paper draws on two case studies from India and China to discuss how and why rapidly urbanizing contexts are particularly challenging for transformative innovation but are also critical sustainability frontiers and learning environments. We argue that lack of understanding and policy engagement with peri-urbanization in its current form is leading to increasing exclusion and unrealized potential to support multiple sustainable urban development goals. Peri-urbanization is often characterized by the neoliberal reordering of space and a co-option of environmental agendas by powerful urban elites. Changing land-use, resource extraction, pollution and livelihood transitions drive rapid changes in interactions between socio-technical and social-ecological systems, and produce complex feedbacks across the rural–urban continuum. These contexts also present characteristic governance challenges as a result of jurisdictional ambiguity, transitioning formal and informal institutional arrangements, heterogeneous and sometimes transient communities, shifts in decision making to distant authorities and the rapid growth of informal market-based arrangements with little incentive for environmental management. These unique features of peri-urbanization may reinforce a lack of inclusion and hinder experimentation, but they can also present valuable opportunities for transformative innovation. This innovation is unlikely to follow the lines of niche management and upscaling but rather should take advantage of peri-urban dynamics. There are possibilities to build new alliances in order to renegotiate governance structures across the rural–urban continuum, to reframe urban sustainability debates and to reconfigure socio-technical and social-ecological systems interactions.  相似文献   
522.
This study compared the relationships of self‐efficacy and reasoning ability to achievement in introductory college biology. Based on the hypothesis that developing formal and postformal reasoning ability is a primary factor influencing self‐efficacy, a significant positive correlation was predicted between reasoning ability and degree of self‐efficacy to complete biological tasks. Further, reasoning ability was predicted to be more highly correlated with course achievement than self‐efficacy. The study involved pre‐ and posttesting 459 introductory biology students. Both self‐efficacy and reasoning ability increased during the semester. As predicted, self‐efficacy and reasoning ability were positively correlated. Depending on the nature of the achievement measure, reasoning ability accounted for some 15 to 30 times more variance in achievement than self‐efficacy. Also, as predicted, reasoning ability was a strong predictor of self‐efficacy, but self‐efficacy was not a strong predictor of reasoning ability. Self‐efficacy estimates and achievement were higher for the concrete tasks than for the formal tasks and higher for the formal tasks than for the postformal tasks. In general, students tended to overestimate their abilities to carry out the concrete, formal, and postformal tasks. Results support the study's working hypothesis that intellectual development continues for some students during the college years, that a postformal level of intellectual development exists, and that reasoning ability is a primary factor influencing both self‐efficacy and achievement. Student overestimation of their abilities may contribute to complacency, lack of effort, and to less than optimal achievement. Consequently, it may be advantageous early in the semester to provide students with particularly challenging tasks that “shock” them out of their complacency and perhaps increase their effort, their reasoning skills, and their achievement. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 44: 706–724, 2007  相似文献   
523.
524.
This study examines the choice, pattern, and timing of sequential modes of entry among multinational corporations investing in China. Specifically, we examine how earlier choices of entry modes influence decisions ahout subsequent modes of entry in a targeted host country. Six hypotheses are developed and tested using a longitudinal sample of 228 Fortune Global 500 firms that have had multiple entries in China between 1979 and 1996. The results provide supportive evidence of our hypotheses. Specifically, firms employed entry modes reflecting low commitment in early stages that were gradually escalated to higher commitment in subsequent decisions. This is consistent with the “incremental in vestment” approach that underlies traditional and contemporary theories and research in market entry decisions. An analysis of entry mode choices over time reveals different learning patterns: the logic of incremental investments (i.e., the escalation of low to high resource commitments); the logic of the “catch‐up” follower (i.e., relatively heavy commitment at later stages); and the logic of stable, consistent investments (i.e., the continuation of the same entry mode throughout the time period. There is moderate but inconclusive support for country of origin as a moderating factor. The implications of this study for theory and practice are discussed, as well as its limitations.  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