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   4498篇
  免费   57篇
  国内免费   10篇
教育   3361篇
科学研究   236篇
各国文化   43篇
体育   404篇
综合类   3篇
文化理论   62篇
信息传播   456篇
  2022年   22篇
  2021年   43篇
  2020年   59篇
  2019年   112篇
  2018年   141篇
  2017年   151篇
  2016年   146篇
  2015年   99篇
  2014年   118篇
  2013年   938篇
  2012年   131篇
  2011年   129篇
  2010年   149篇
  2009年   135篇
  2008年   146篇
  2007年   144篇
  2006年   108篇
  2005年   95篇
  2004年   99篇
  2003年   81篇
  2002年   96篇
  2001年   66篇
  2000年   107篇
  1999年   76篇
  1998年   74篇
  1997年   58篇
  1996年   65篇
  1995年   52篇
  1994年   63篇
  1993年   59篇
  1992年   44篇
  1991年   68篇
  1990年   51篇
  1989年   44篇
  1988年   36篇
  1987年   45篇
  1986年   44篇
  1985年   42篇
  1984年   47篇
  1983年   37篇
  1982年   31篇
  1981年   33篇
  1980年   29篇
  1979年   22篇
  1978年   29篇
  1977年   36篇
  1976年   27篇
  1975年   20篇
  1974年   22篇
  1971年   12篇
排序方式: 共有4565条查询结果,搜索用时 406 毫秒
991.

Playgroups provide for more children under five than any other preschool service, and now regard themselves as an alternative to, rather than a substitute for, nursery education. There are, however, a number of major issues concerning their funding: income depends largely on parental fees and fund‐raising; playgroups are less well resourced than nursery education; and current resourcing may be too low to ensure quality. Based on research in 45 playgroups in three areas (rural, inner city, and suburban), the paper looks in more detail at the consequences for playgroups of their current funding position and, more specifically, at the impact on various aspects of playgroups ‐ including premises and equipment; opening hours and usage; the position of playgroup workers; the satisfaction of mothers and playgroup leaders; and the playgroup environment ‐ of different funding policies pursued by local authorities in the three study areas. One local authority provided substantial support to individual playgroups, while the other two gave minimal support. The paper concludes by considering three options for the future funding of playgroups.

  相似文献   
992.
993.
994.
Knowledge-sharing has often been analysed by one-shot game models, where the balance between costs and the value of knowledge exchanges for different exchange partners has been calculated. This paper reviews this literature and discusses five of its assumptions: (1) the assumption of homogeneity of knowledge, (2) the assumption of one-shot solutions, (3) the assumption of knowledge as value, (4) the assumption of knowledge as the only instrument for an actor to influence the payouts, and (5) the assumption of deterministic profits from negotiation results. We propose a more realistic game-theoretical model for analysing knowledge-sharing, based on alternative assumptions, that is, heterogeneity of knowledge, multi-stage negotiations, knowledge value realized via production functions, the need for side payments, and the working of nature and discount factors. Our model may help in establishing new firms on the basis of existing knowledge owned by companies and their employees.  相似文献   
995.
Dozens and dozens of little deaths occur in college classrooms each day as teachers, mostly because of fear, steer themselves and their students away from what is alive and real and toward what is dead, safe, and boring. In this paper, I use a collection of stories to describe a practice that enlivens classroom dynamics that I call “Steering Into the Curve.”  相似文献   
996.
997.
998.
999.
1000.
This article reports on the Telecommunications in Primary Science (TIPS) project. A central aim of the TIPS project was to explore the feasibility of tackling problems associated with some primary teachers' lack of confidence and competence in the physical sciences through a computer network linking together a small number of schools and a university. In the course of the project, teachers became convinced of the potential of using the Internet in the classroom and also valued the electronic delivery of pedagogical guidance.  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