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   23094篇
  免费   402篇
  国内免费   32篇
教育   16699篇
科学研究   2008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   2633篇
  2022年   130篇
  2021年   234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
41.
42.
This study was designed to examine the magnitude and duration of excess postexercise oxygen consumption (EPOC) following upper body exercise, using lower body exercise for comparison. On separate days and in a counterbalanced order, eight subjects (four male and four female) performed a 20-min exercise at 60% of mode-specific peak oxygen uptake (VO2) using an arm crank and cycle ergometer. Prior to each exercise, baseline VO2 and heart rate (HR) were measured during the final 15 min of a 45-min seated rest. VO2 and HR were measured continuously during the postexercise period until baseline VO2 was reestablished. No significant difference between the two experimental conditions was found for magnitude of EPOC (t [7] = 0.69, p greater than .05). Mean (+/- SD) values were 9.2 +/- 3.3 and 10.4 +/- 5.8 kcal for the arm crank and cycle ergometer exercises, respectively. Duration of EPOC was relatively short and not significantly different (t [7] = 0.24, p greater than .05) between the upper body (22.9 +/- 13.7 min) and lower body (24.2 +/- 19.4 min) exercises. Within the framework of the chosen exercise conditions, these results suggest EPOC may be related primarily to the relative metabolic rate of the active musculature, as opposed to the absolute exercise VO2 or quantity of active muscle mass associated with these two types of exercise.  相似文献   
43.
44.
45.
The validity and reliability of curriculum‐based measures in reading as indicators of performance and progress for secondary‐school students were examined. Thirty‐five grade 8 students completed reading aloud and maze‐selection measures weekly for 10 weeks. Criterion measures were the state standards test in reading and the Woodcock–Johnson III Test of Achievement. Different time frames for each measure were compared. Most alternate‐form reliability coefficients were above .80. Criterion‐related validity coefficients ranged from .77 to .89. No differences related to time were found. Only maze selection reflected significant growth, with an average increase of 1.29 correct choices per week. Maze growth was related to the reading performance level and to change on the Woodcock–Johnson III from pre‐ to posttest.  相似文献   
46.
47.
48.
49.
50.
This article is an overview of the development of education for publishing programs in the U.S. Information and addresses for the main introductory summer programs, the continuing education programs, the degree-granting Masters Programs, and a selection of organizations outside the United States offering courses in publishing are included in the article.  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