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   69813篇
  免费   2756篇
  国内免费   39篇
  72608篇
  2020年   741篇
  2019年   937篇
  2018年   1350篇
  2017年   1374篇
  2016年   1459篇
  2015年   998篇
  2014年   1194篇
  2013年   5930篇
  2012年   2149篇
  2011年   2303篇
  2010年   1366篇
  2009年   1364篇
  2008年   2027篇
  2007年   2057篇
  2006年   1789篇
  2005年   1648篇
  2004年   1595篇
  2003年   1486篇
  2002年   1545篇
  2001年   2278篇
  2000年   2178篇
  1999年   1671篇
  1998年   847篇
  1997年   737篇
  1996年   693篇
  1995年   673篇
  1994年   648篇
  1993年   660篇
  1992年   1356篇
  1991年   1295篇
  1990年   1265篇
  1989年   1160篇
  1988年   1134篇
  1987年   1094篇
  1986年   1118篇
  1985年   1174篇
  1984年   914篇
  1983年   811篇
  1979年   942篇
  1978年   704篇
  1975年   828篇
  1974年   914篇
  1973年   905篇
  1972年   776篇
  1971年   703篇
  1970年   670篇
  1969年   648篇
  1968年   834篇
  1967年   803篇
  1966年   718篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
P A Kolers  M Green 《Perception》1984,13(3):249-254
Two shapes of either the same or different color will seem to be in smooth apparent motion with like-colored mates, at proper conditions of flash timing and spacing. An experiment is reported in which the condition was tested for unlike-colored pairs, for example red-green alternated with green-red. The question of interest was how the visual system would resolve the disparity of color. An 'intelligent' solution would rotate the shapes in three dimensions. Like-colored and unlike-colored parts were found to move and transform similarly, however, the resolution being dependent more upon timing than upon color. The motion of intelligence as it might be applied to vision is discussed in light of these results.  相似文献   
3.
4.
5.
6.
7.
The purpose of this study is to compare field investigative interviews of children (FIIC) with three different legal outcomes in child sexual abuse cases: (i) insufficient evidence to proceed (IEP); (ii) convictions; or (iii) acquittals by the court. One hundred FIIC were divided into one of the three outcome possibilities. Amongst the female interviewees older than 10 years, there were no cases of acquittals and the convicted cases were over-represented. The children's response to open questions was found to be the main difference between the three FIIC outcomes. The responses to these open questions were 1.9 and 2.3 times longer in the convicted cases compared to acquittals and IEP. Possible explanations for the result are discussed. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
8.
9.
10.
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   
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