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   1454篇
  免费   20篇
  国内免费   1篇
教育   1107篇
科学研究   66篇
各国文化   20篇
体育   119篇
综合类   1篇
文化理论   10篇
信息传播   152篇
  2022年   9篇
  2021年   14篇
  2020年   22篇
  2019年   39篇
  2018年   69篇
  2017年   68篇
  2016年   69篇
  2015年   31篇
  2014年   42篇
  2013年   319篇
  2012年   42篇
  2011年   46篇
  2010年   31篇
  2009年   43篇
  2008年   37篇
  2007年   26篇
  2006年   30篇
  2005年   20篇
  2004年   24篇
  2003年   19篇
  2002年   22篇
  2001年   18篇
  2000年   28篇
  1999年   13篇
  1998年   13篇
  1997年   26篇
  1996年   18篇
  1994年   9篇
  1993年   17篇
  1992年   19篇
  1991年   22篇
  1990年   15篇
  1989年   22篇
  1988年   12篇
  1987年   23篇
  1986年   12篇
  1985年   8篇
  1983年   10篇
  1982年   11篇
  1981年   8篇
  1980年   7篇
  1979年   10篇
  1978年   8篇
  1977年   15篇
  1976年   7篇
  1975年   8篇
  1974年   8篇
  1973年   8篇
  1971年   10篇
  1962年   6篇
排序方式: 共有1475条查询结果,搜索用时 62 毫秒
51.
52.
53.
The Family Service Units is a national charity working in some of the most deprived areas of the country. This paper is concerned with one part of its work, The Connections Project. This project aims to develop non-punitive anti-bullying partnerships between young people, schools, adults in the community and other agencies. This article focuses on a particular aspect of this project, the Support Code, which seeks to promote an ethos of proactive mutual support. The development is described and the teachers' reactions are explored. Though this work is currently being undertaken in primary schools, much is applicable to the early years of secondary education too.  相似文献   
54.
笔者曾于2005年6月在国内的一个乡镇中学支教.那是南方一个较大的工业城市所属的一个县的乡.虽然这个乡距离大城市不远,但由于交通不便,整个乡仍处于闭塞状态,其总体经济状况并不好.除了极少数学生来自富裕的商人家庭,绝大部分学生都来自贫苦农民家庭.我所执教的初中二年级的一个班有64个学生,其中85%的学生住校.由于大部分学生是独生子女,所以即使他们来自经济状况并不好的农村家庭,娇生惯养的个性仍暴露在学习和生活的方方面面.  相似文献   
55.
This article describes how the National Science Foundation's support of information research has evolved from NSF's original mission of improving the dissemination of scientific and technical information to its present interest in information robotics and intelligent systems. The pattern of grant support, since a major reorganization of the information science division in 1978, is analyzed in terms of the institutions, the investigators, and the disciplines that have been major grant recipients.  相似文献   
56.
57.
The aim of this study was to assess isokinetic torque, work and power between non-injured, ACL (anterior cruciate ligament)-deficient and ACL-reconstructed individuals. Ten healthy, non-injured individuals, seven unilateral ACL-deficient individuals and six unilateral ACL-reconstructed individuals were assessed for isokinetic quadriceps and hamstring strength at 1.05 and 3.14 rad.s-1. Peak torque, total work, average power and the ratio of peak torque to body mass were computed for both velocities. Peak torque was also corrected for body mass, using allometric modelling. The non-injured individuals showed significantly greater quadriceps peak torque to body mass ratios than the ACL-deficient and ACL-reconstructed individuals at both velocities, and greater hamstring peak torque to body mass ratios than the ACL-deficient group at 3.14 rad.s-1 (P < 0.05). The ACL-deficient individuals displayed greater quadriceps and hamstring peak torque, total work and average power than the non-injured individuals at 1.05 rad.s-1 (P < 0.05). The ACL-deficient individuals also displayed significantly greater peak torque, total work and average power than the ACL-reconstructed individuals for the quadriceps at both velocities (P < 0.05). The ACL-deficient individuals demonstrated greater hamstring peak torque and total work than the non-injured individuals at both velocities (P < 0.05). The allometrically modelled peak torques at both isokinetic velocities demonstrated that the quadriceps muscle values were significantly higher in the non-involved than the involved limb. The hamstring peak torques corrected for body mass were significantly higher in the non-involved than the involved limb only at 1.05 rad.s-1. The main finding from the present study is that isokinetic measures in ratio-scaled or absolute units yield a different outcome and, hence, interpretation compared with the allometric approach.  相似文献   
58.
This paper explores the association between moderate levels of physical activity (PA) and health benefits in well being and symptoms such as tiredness, back pain, and constipation. Participants in the Australian Longitudinal Study on Women's Health, 14,502 young women (ages 18-23 years), 13,609 middle-age women (45-50 years), and 11,421 older women (ages 70-75 years), answered questions about vigorous and less vigorous exercise (used to determine a physical activity score), well being (SF-36), symptoms, and medical conditions. There were significant associations between the PA score and SF-36 in each cohort. Odds ratios (OR) for a range of symptoms and conditions were lower for women who reported low to moderate activity than for sedentary women, for example, for young women or for constipation = 0.76 (CI, 0.65-0.89), for middle-age women or for tiredness = 0.70 (0.63-0.78). There was no threshold of PA at which health benefits increased significantly. Although cross-sectional, the findings suggest that low-to-moderate levels of exercise are associated with a range of health benefits for women of all ages. These preliminary findings will be followed up during the longitudinal study.  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