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   71032篇
  免费   2171篇
  国内免费   45篇
  73248篇
  2020年   604篇
  2019年   708篇
  2018年   4176篇
  2017年   3580篇
  2016年   3109篇
  2015年   942篇
  2014年   1003篇
  2013年   4451篇
  2012年   2173篇
  2011年   4000篇
  2010年   3438篇
  2009年   2452篇
  2008年   3114篇
  2007年   3483篇
  2006年   1425篇
  2005年   1432篇
  2004年   1341篇
  2003年   1289篇
  2002年   1272篇
  2001年   1521篇
  2000年   1491篇
  1999年   1130篇
  1998年   618篇
  1997年   620篇
  1996年   571篇
  1995年   527篇
  1992年   922篇
  1991年   884篇
  1990年   880篇
  1989年   822篇
  1988年   788篇
  1987年   752篇
  1986年   836篇
  1985年   832篇
  1984年   728篇
  1983年   635篇
  1981年   512篇
  1979年   670篇
  1978年   577篇
  1976年   497篇
  1975年   595篇
  1974年   734篇
  1973年   717篇
  1972年   573篇
  1971年   563篇
  1970年   499篇
  1969年   568篇
  1968年   642篇
  1967年   565篇
  1966年   593篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
12.
13.
14.
The authors tested effects of a 10-week group cognitive-behavioral stress management intervention among 100 women newly treated for Stage 0-II breast cancer. The intervention reduced prevalence of moderate depression (which remained relatively stable in the control condition) but did not affect other measures of emotional distress. The intervention also increased participants' reports that having breast cancer had made positive contributions to their lives, and it increased generalized optimism. Both remained significantly elevated at a 3-month follow-up of the intervention. Further analysis revealed that the intervention had its greatest impact on these 2 variables among women who were lowest in optimism at baseline. Discussion centers on the importance of examining positive responses to traumatic events--growth, appreciation of life, shift in priorities, and positive affect-as well as negative responses.  相似文献   
15.
16.
17.
18.
Using a Piagétan perspective, this study investigated the ways in which elementary school children perceive changes in the size of a televised image (in this case, a candy bar). The findings suggest that younger children perceive changes in image size from a medium shot to a close-up as changes in the object itself. Children's responses to changes in the televised image parallel their responses to traditional conservation tasks, but conservation of televised images occurs at a later age. In addition, children appear to use different cognitive skills to interpret how a zoom or a cut transforms the size of a televised image. When a zoom is used, children more readily perceive the object as “growing larger.”  相似文献   
19.
20.
We investigated eye‐movements during preschool children's pictorial recall of seen objects. Thirteen 3‐ to 4‐year‐old children completed a perceptual encoding and a pictorial recall task. First, they were exposed to 16 pictorial objects, which were positioned in one of four distinct areas on the computer screen. Subsequently, they had to recall these pictorial objects from memory in order to respond to specific questions about visual details. We found that children spent more time fixating the areas in which the pictorial objects were previously displayed. We conclude that as early as age 3–4 years old, children show specific eye‐movements when they recall pictorial contents of previously seen objects.  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