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   36791篇
  免费   1344篇
  国内免费   12篇
  2019年   388篇
  2018年   570篇
  2017年   526篇
  2016年   609篇
  2015年   437篇
  2014年   525篇
  2013年   3475篇
  2012年   898篇
  2011年   927篇
  2010年   591篇
  2009年   577篇
  2008年   882篇
  2007年   790篇
  2006年   722篇
  2005年   622篇
  2004年   590篇
  2003年   623篇
  2002年   593篇
  2001年   1173篇
  2000年   1132篇
  1999年   862篇
  1996年   494篇
  1995年   469篇
  1994年   468篇
  1993年   433篇
  1992年   906篇
  1991年   803篇
  1990年   807篇
  1989年   711篇
  1988年   719篇
  1987年   690篇
  1986年   698篇
  1985年   686篇
  1984年   606篇
  1983年   502篇
  1982年   391篇
  1981年   409篇
  1980年   388篇
  1979年   579篇
  1978年   431篇
  1975年   530篇
  1974年   519篇
  1973年   588篇
  1972年   558篇
  1971年   499篇
  1970年   445篇
  1969年   427篇
  1968年   535篇
  1967年   456篇
  1966年   444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