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   26560篇
  免费   404篇
  国内免费   19篇
教育   19038篇
科学研究   2281篇
各国文化   284篇
体育   2191篇
综合类   14篇
文化理论   211篇
信息传播   2964篇
  2022年   197篇
  2021年   295篇
  2020年   441篇
  2019年   701篇
  2018年   952篇
  2017年   939篇
  2016年   823篇
  2015年   507篇
  2014年   776篇
  2013年   5268篇
  2012年   742篇
  2011年   736篇
  2010年   549篇
  2009年   575篇
  2008年   648篇
  2007年   581篇
  2006年   519篇
  2005年   497篇
  2004年   451篇
  2003年   424篇
  2002年   412篇
  2001年   522篇
  2000年   451篇
  1999年   421篇
  1998年   245篇
  1997年   251篇
  1996年   295篇
  1995年   277篇
  1994年   231篇
  1993年   232篇
  1992年   370篇
  1991年   334篇
  1990年   340篇
  1989年   334篇
  1988年   283篇
  1987年   323篇
  1986年   288篇
  1985年   326篇
  1984年   267篇
  1983年   226篇
  1982年   212篇
  1981年   192篇
  1980年   177篇
  1979年   276篇
  1978年   203篇
  1977年   179篇
  1976年   171篇
  1975年   154篇
  1974年   163篇
  1971年   150篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
The purpose of this investigation was to describe the morphological parameters that characterize elite age group divers. Comparisons are made to normative age group data from the Coquitlam Growth Study and the constancy of important characteristics from age group to age group is examined. Data were collected on 27 male and 28 female elite divers who participated in the 1990 North American Age Group Diving Championships. Body build, body composition and skinfold corrected diameters were determined from 36 anthropometric parameters and analysed by ANOVA, t-test and Phantom z-scores procedures. All age groups except the 14- to 15-year-old males were significantly (P < or = 0.05) shorter than their norms but recorded higher androgyny index values. The estimated relative muscle mass increased significantly (P < or = 0.05) with age for males at all ages (40.8-46.3%). The 16- to 18-year-old females had a significantly (P < or = 0.05) larger relative muscle component compared to the younger age groups (40.1-38.4%). When normalized for height, active tissue development of the extremities was comparable between the sexes except in the forearm. The results indicate that at all age levels short stature is an important characteristic for divers. Analysis of regional active tissue development provides further insight into sport-specific prerequisites for success at elite levels.  相似文献   
12.
13.
14.
15.
16.
17.
The standard error of measurement (SEM) is the standard deviation of errors of measurement that are associated with test scores from a particular group of examinees. When used to calculate confidence bands around obtained test scores, it can be helpful in expressing the unreliability of individual test scores in an understandable way. Score bands can also be used to interpret intraindividual and interindividual score differences. Interpreters should be wary of over-interpretation when using approximations for correctly calculated score bands. It is recommended that SEMs at various score levels be used in calculating score bands rather than a single SEM value.  相似文献   
18.
19.
Three languages are widely used in schools in Kenya – English, Kiswahili and Kenya Sign Language. Many pupils with hearing impairments are taught separately from the mainstream, in specialist settings. The fact that most of the formal teaching, assessment and examination processes in Kenyan schools rely upon spoken and written English compounds the separation of these pupils from the mainstream of education and, potentially, from the mainstream of society. In this article, Gertrude Wamae, graduate assistant in the Department of English and Linguistics at Kenyatta University, and Rachael Kang'ethe-Kamau, lecturer in the Department of Special Education at Kenyatta University, discuss the relationships between language, hearing impairment and inclusion in the Kenyan context. The article suggests that the use of signed exact English would enhance opportunities for inclusion for those with hearing impairments and that programmes of teacher training need to take account of persuasive research in this area. The article closes with a plea for further research, carried out collaboratively by educationalists, linguists, teacher trainers and practitioners, to develop policies and practices suited to more inclusive futures. The article is based on a paper presented to the International Conference on Inclusive Education run by Maseno University in September 2002.  相似文献   
20.
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