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   38062篇
  免费   1408篇
  国内免费   11篇
  2018年   589篇
  2017年   546篇
  2016年   637篇
  2015年   456篇
  2014年   536篇
  2013年   3602篇
  2012年   950篇
  2011年   969篇
  2010年   624篇
  2009年   598篇
  2008年   927篇
  2007年   827篇
  2006年   778篇
  2005年   650篇
  2004年   625篇
  2003年   659篇
  2002年   630篇
  2001年   1206篇
  2000年   1178篇
  1999年   886篇
  1998年   410篇
  1996年   506篇
  1995年   478篇
  1994年   474篇
  1993年   449篇
  1992年   922篇
  1991年   832篇
  1990年   818篇
  1989年   727篇
  1988年   727篇
  1987年   712篇
  1986年   702篇
  1985年   699篇
  1984年   611篇
  1983年   512篇
  1982年   410篇
  1981年   435篇
  1980年   406篇
  1979年   589篇
  1978年   447篇
  1975年   554篇
  1974年   541篇
  1973年   603篇
  1972年   573篇
  1971年   511篇
  1970年   444篇
  1969年   434篇
  1968年   547篇
  1967年   468篇
  1966年   450篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
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   
43.
44.
45.
46.
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   
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