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   53846篇
  免费   2125篇
  国内免费   32篇
  56003篇
  2020年   616篇
  2019年   769篇
  2018年   1083篇
  2017年   1104篇
  2016年   1156篇
  2015年   774篇
  2014年   960篇
  2013年   4683篇
  2012年   1705篇
  2011年   1860篇
  2010年   1088篇
  2009年   1105篇
  2008年   1690篇
  2007年   1678篇
  2006年   1489篇
  2005年   1353篇
  2004年   1329篇
  2003年   1215篇
  2002年   1231篇
  2001年   1780篇
  2000年   1682篇
  1999年   1300篇
  1998年   692篇
  1997年   592篇
  1996年   528篇
  1995年   540篇
  1994年   519篇
  1993年   530篇
  1992年   1032篇
  1991年   969篇
  1990年   956篇
  1989年   863篇
  1988年   834篇
  1987年   820篇
  1986年   824篇
  1985年   877篇
  1984年   701篇
  1983年   603篇
  1982年   496篇
  1979年   682篇
  1978年   510篇
  1976年   469篇
  1975年   603篇
  1974年   633篇
  1973年   608篇
  1972年   548篇
  1971年   480篇
  1968年   542篇
  1967年   543篇
  1966年   475篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
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   
2.
3.
4.
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   
5.
6.
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   
7.
This study examined individuals' tendencies to migrate from one organization to another (i.e., the propensity to switch employers). Previous researchers have suggested that switching organizations throughout the career span may be partially heritable and therefore related to individual differences in personality traits. If personality traits are indeed related to a tendency to turnover from organizations, this suggests that current procedures for calculating utility may be inaccurate. Using a database of 1081 individuals who have been in the workforce for several years, results indicated that personality traits measured by the Occupational Personality Questionnaire (non‐ipsative; OPQn) were modestly related to organization switching (i.e., repeated moves from organization to organization). We found that higher scores on extraversion, openness to experience, and conscientiousness‐related traits were modestly correlated with more frequent organization switching. However, we demonstrate that these modest relationships can produce large inaccuracies in utility estimates.  相似文献   
8.
9.
10.
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