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   39184篇
  免费   1500篇
  国内免费   11篇
  2019年   448篇
  2018年   693篇
  2017年   646篇
  2016年   746篇
  2015年   539篇
  2014年   652篇
  2013年   3866篇
  2012年   1049篇
  2011年   1064篇
  2010年   677篇
  2009年   664篇
  2008年   989篇
  2007年   907篇
  2006年   821篇
  2005年   672篇
  2004年   677篇
  2003年   700篇
  2002年   637篇
  2001年   1205篇
  2000年   1191篇
  1999年   886篇
  1998年   402篇
  1996年   509篇
  1995年   478篇
  1994年   475篇
  1993年   448篇
  1992年   913篇
  1991年   810篇
  1990年   808篇
  1989年   712篇
  1988年   716篇
  1987年   700篇
  1986年   694篇
  1985年   675篇
  1984年   608篇
  1983年   505篇
  1982年   404篇
  1981年   414篇
  1979年   575篇
  1978年   433篇
  1975年   535篇
  1974年   522篇
  1973年   586篇
  1972年   566篇
  1971年   507篇
  1970年   450篇
  1969年   427篇
  1968年   536篇
  1967年   459篇
  1966年   447篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Extensive empirical evidence confirms a depressed entitlement effect wherein women pay themselves less than men for comparable work and believe the allocation fair. The present study tests the hypothesis that status subordination linked to being female underlies at least some of this effect. A 2 × 3 design crossed 180 undergraduates' gender with a control condition, which successfully established the depressed entitlement effect, and two experimental conditions. In one, women's status was enhanced through legitimation of women's task abilities; in the other, both women's and men's status was enhanced by adding educational credentials relevant to task ability. Follow-up analyses of the significant interaction revealed that the gap in self-pay demonstrated in the control condition disappeared when women's status was enhanced such that higher-status women's self-pay equaled that of men and exceeded that of control women. Although these findings confirm that status plays a role in producing depressed entitlement in self-pay, ancillary analyses of participants' perceptions point to the persistence of shifting standards and men's resistance to status threats.  相似文献   
42.
43.
44.
45.
The ability to make egocentric distance estimates of a single point source of light, seen in darkness and without the cues of changing size and luminance, was investigated in sixteen observers. The attenuation required to maintain constant luminance, when the target was viewed from different distances, was shown to follow the inverse square law providing the angle subtended by the light was less than 20 s arc. Distance changes were also simulated by means of a split mirror which produced vergence cues, or by test lenses to provide accommodation cues. Over the range 0.5 to 9.2 m distance estimates were surprisingly accurate, although there was some overestimation of near and underestimation of far distances. Most observers made good judgements when only convergence cues were varied, whereas no observers made consistently good judgements when only accommodation cues were varied. The difficulties are discussed in terms of the accommodation-convergence link. When distance was simulated by changing convergence and accommodation cues, estimates were not as good as when real distance was changed. Since good estimates were made with brief target exposures, these judgements were not based on subsequent convergence or accommodation changes. It is suggested that the metric or reference against which the apparently absolute judgements were made was the efferent demand signal associated with a 'resting' position of convergence in darkness.  相似文献   
46.
47.
48.
49.
50.
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