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   23108篇
  免费   402篇
  国内免费   32篇
教育   16703篇
科学研究   2017篇
各国文化   210篇
体育   1750篇
综合类   34篇
文化理论   194篇
信息传播   2634篇
  2022年   136篇
  2021年   237篇
  2020年   374篇
  2019年   503篇
  2018年   722篇
  2017年   793篇
  2016年   743篇
  2015年   443篇
  2014年   600篇
  2013年   4400篇
  2012年   582篇
  2011年   653篇
  2010年   496篇
  2009年   473篇
  2008年   542篇
  2007年   516篇
  2006年   458篇
  2005年   396篇
  2004年   379篇
  2003年   341篇
  2002年   394篇
  2001年   434篇
  2000年   405篇
  1999年   410篇
  1998年   216篇
  1997年   234篇
  1996年   268篇
  1995年   223篇
  1994年   221篇
  1993年   197篇
  1992年   318篇
  1991年   306篇
  1990年   335篇
  1989年   316篇
  1988年   300篇
  1987年   251篇
  1986年   261篇
  1985年   325篇
  1984年   269篇
  1983年   259篇
  1982年   198篇
  1981年   207篇
  1980年   184篇
  1979年   243篇
  1978年   215篇
  1977年   194篇
  1976年   160篇
  1975年   128篇
  1974年   121篇
  1973年   148篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
921.
This study examined the utility of the MAT-SF and the DAP: A Quantitative Scoring System as screening instruments for mental retardation. In this study, 46 normals and 39 developmentally handicapped (DH) 4th- and 5th-grade students were group administered both screening tests and individually administered an achievement test, the KTEA. The results found the MAT-SF to correlate significantly with all areas of achievement for both groups, whereas the DAP did not correlate significantly with any areas of achievement for the normal group but correlated significantly with math, but not reading, for the developmentally handicapped students. The results support the use of the MAT-SF as a screening instrument for mental retardation, whereas the usefulness of the DAP is not as clear.  相似文献   
922.
Stürze im Alter     
The consequences of falls can be considerable for elderly people. They often lead to fractures or other injuries, immobility, curtailed independence, need for long-term care, and even death. They decrease the quality of life and can exert a negative influence on self-esteem, activity level, and the number of social contacts. The annual rate of falls in people over 65 is approximately 30%. This number increases to about 50% up to the age of 80 years and almost half of those who fall do so more than once during the course of a year. More than 90% of all falls occur in everyday situations, mostly resulting from movement errors. All studies demonstrated a significant correlation between muscle weakness and the incidence of falls, thus representing a major risk factor for a fall. Gait disorders, hip fractures, and the loss of functional autonomy are closely related to falls and associated with age to a similar extent. Almost 90% of hip fractures in Germany are the result of a fall. From the individual and economic points of view, a fracture near the hip has serious consequences in old age. Based on research findings to date, vibration training could constitute an interesting alternative to classic methods of strength training in fall prevention programs. The aim of this contribution is to provide fundamental facts regarding epidemiology and prevention and to present a potential approach to implementing vibration training in multimodal programs designed to prevent falls.  相似文献   
923.
924.
A kindergarten class of 9 boys and 11 girls took the 1986 Stanford-Binet Intelligence Scale (Fourth Edition) and the Wechsler Preschool and Primary Scale of Intelligence. Of 6 correlations of total scores and subtest pairs, only the correlation of total scores was statistically significant (p<.01).  相似文献   
925.
926.
927.
928.
929.
930.
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