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   1949篇
  免费   51篇
  国内免费   4篇
教育   1408篇
科学研究   166篇
各国文化   33篇
体育   186篇
综合类   1篇
文化理论   38篇
信息传播   172篇
  2023年   12篇
  2022年   16篇
  2021年   29篇
  2020年   31篇
  2019年   55篇
  2018年   70篇
  2017年   78篇
  2016年   92篇
  2015年   51篇
  2014年   80篇
  2013年   457篇
  2012年   45篇
  2011年   52篇
  2010年   55篇
  2009年   52篇
  2008年   74篇
  2007年   47篇
  2006年   50篇
  2005年   44篇
  2004年   40篇
  2003年   34篇
  2002年   42篇
  2001年   20篇
  2000年   21篇
  1999年   17篇
  1998年   14篇
  1997年   23篇
  1996年   16篇
  1995年   19篇
  1994年   19篇
  1993年   19篇
  1992年   17篇
  1991年   19篇
  1990年   9篇
  1989年   20篇
  1988年   14篇
  1987年   9篇
  1986年   9篇
  1985年   16篇
  1984年   10篇
  1983年   17篇
  1982年   19篇
  1981年   9篇
  1979年   12篇
  1978年   13篇
  1977年   9篇
  1974年   13篇
  1973年   10篇
  1970年   7篇
  1965年   7篇
排序方式: 共有2004条查询结果,搜索用时 15 毫秒
51.
52.
Abstract

This paper traces the main stages in the path towards the recognition in 1988 of the place of science and environmental education in the Maltese curriculum for the primary level. A brief review is given of the development of the science curriculum while a more detailed account is given of the development of a project on environmental education. The project involved the adoption of a model of the child's view of the environment, the drawing up of an ensemble of attainment targets, and the exploration of ways of infusing environmental education activities into the curriculum. A draft teacher's manual was circulated and evaluated at a national seminar. Major points arising during the seminar are discussed and plans for the dissemination of the work are outlined. Comparing the roles that teachers are asked to play in these developments, it is found that environmental education offers them more opportunity for professional growth.  相似文献   
53.
54.
The aim of this study was to ascertain if gear ratio selection would have an effect on peak power and time to peak power production in elite Bicycle Motocross (BMX) cyclists. Eight male elite BMX riders volunteered for the study. Each rider performed three, 10-s maximal sprints on an Olympic standard indoor BMX track. The riders’ bicycles were fitted with a portable SRM power meter. Each rider performed the three sprints using gear ratios of 41/16, 43/16 and 45/16 tooth. The results from the 41/16 and 45/16 gear ratios were compared to the current standard 43/16 gear ratio. Statistically, significant differences were found between the gear ratios for peak power (F(2,14)?=?6.448; p?=?.010) and peak torque (F(2,14)?=?4.777; p?=?.026), but no significant difference was found for time to peak power (F(2,14)?=?0.200; p?=?.821). When comparing gear ratios, the results showed a 45/16 gear ratio elicited the highest peak power,1658?±?221?W, compared to 1436?±?129?W and 1380?±?56?W, for the 43/16 and 41/16 ratios, respectively. The time to peak power showed a 41/16 tooth gear ratio attained peak power in ?0.01?s and a 45/16 in 0.22?s compared to the 43/16. The findings of this study suggest that gear ratio choice has a significant effect on peak power production, though time to peak power output is not significantly affected. Therefore, selecting a higher gear ratio results in riders attaining higher power outputs without reducing their start time.  相似文献   
55.
56.
Testlet effects can be taken into account by incorporating specific dimensions in addition to the general dimension into the item response theory model. Three such multidimensional models are described: the bi-factor model, the testlet model, and a second-order model. It is shown how the second-order model is formally equivalent to the testlet model. In turn, both models are constrained bi-factor models. Therefore, the efficient full maximum likelihood estimation method that has been established for the bi-factor model can be modified to estimate the parameters of the two other models. An application on a testlet-based international English assessment indicated that the bi-factor model was the preferred model for this particular data set.  相似文献   
57.
ABSTRACT

An orthopedagogical method for teaching children with a depression is presented here. Relatively unknown in the English‐speaking world, orthopedagogy is a pedagogical discipline that is aimed at an entire action field. It does not target the child with handicap, but the entire problematic educational situation (PES). Orthopedagogy is the scientific study of assistance given to those concerned with a PES ‐ namely, the child, parents, brothers and sisters, grandparents, and so on. To break through a PES or to get rid of it, the orthopedagogician has to listen to the orthopedagogical request for help of the child and give an appropriate answer to it. On the basis of a theoretical model of Paul Gilbert, an orthopedagogic request for helping children with a depression was formulated. Gilbert's model offers a perspective derived from evolution theory and argues for the adoption of a bio‐psychological approach. Children with a depression request a warm and loving climate, an attractive and simple education situation and close involvement on the part of the educator. To answer that request, we set orthopedagogical action on two tracks. On track 1 (dialogical action) we try to break through the PES by asking the educator to over‐accentuate the pedagogical climate, the education situation and his/her own presentation. On track 2 (technical action) we designed an approach aimed at children aged between 6 and 12 years with a depression.  相似文献   
58.
The developments and changes in the concept of ‘education for older adults’ during the last two decades are reviewed in this article. The origin of the terms ‘third age’ and ‘educational gerontology’ are discussed also and the issue of non-legitimation is raised.  相似文献   
59.
60.
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