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   187824篇
  免费   8343篇
  国内免费   155篇
  2020年   2776篇
  2019年   3440篇
  2018年   3655篇
  2017年   4096篇
  2016年   4699篇
  2015年   3927篇
  2014年   4802篇
  2013年   23428篇
  2012年   4965篇
  2011年   4271篇
  2010年   4084篇
  2009年   4851篇
  2008年   4402篇
  2007年   4029篇
  2006年   4480篇
  2005年   4382篇
  2004年   3867篇
  2003年   3461篇
  2002年   3320篇
  2001年   4041篇
  2000年   3906篇
  1999年   3653篇
  1998年   2888篇
  1997年   2724篇
  1996年   2639篇
  1995年   2451篇
  1994年   2414篇
  1993年   2386篇
  1992年   3037篇
  1991年   2843篇
  1990年   2687篇
  1989年   2546篇
  1988年   2535篇
  1987年   2522篇
  1986年   2558篇
  1985年   2754篇
  1984年   2749篇
  1983年   2496篇
  1982年   2444篇
  1981年   2416篇
  1980年   2245篇
  1979年   2526篇
  1978年   2327篇
  1977年   2244篇
  1976年   2049篇
  1975年   2234篇
  1974年   2314篇
  1973年   2245篇
  1972年   1830篇
  1971年   1724篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
211.
212.
213.
Several studies have illuminated how processing manual action verbs (MaVs) affects the programming or execution of concurrent hand movements. Here, to circumvent key confounds in extant designs, we conducted the first assessment of motor–language integration during handwriting—a task in which linguistic and motoric processes are co‐substantiated. Participants copied MaVs, non‐manual action verbs, and non‐action verbs as we collected measures of motor programming and motor execution. Programming latencies were similar across conditions, but execution was faster for MaVs than for the other categories, regardless of whether word meanings were accessed implicitly or explicitly. In line with the Hand‐Action‐Network Dynamic Language Embodiment (HANDLE) model, such findings suggest that effector‐congruent verbs can prime manual movements even during highly automatized tasks in which motoric and verbal processes are naturally intertwined. Our paradigm opens new avenues for fine‐grained explorations of embodied language processes.  相似文献   
214.
215.
By roughly 6 years of age, children acquire the stereotype that men are more competent than women in science, technology, engineering, and mathematics (STEM), potentially leading to greater trust in scientific information provided by men. This study tested whether 3- to 8-year-old children differentially endorsed conflicting information about science and toys presented by male and female informants depicted as a ‘man’ and ‘woman’ (Exp1) or ‘scientists’ (Exp2). Children were expected to endorse toy testimony from gender-matched informants; thus, the key question concerned endorsement of science testimony. In Exp1 (N = 149), boys and girls showed a same-gender informant preference for toy testimony; however, girls endorsed the male informant's testimony more for science than for toys – but only when tested by a male experimenter. In Exp2 (N = 264), boys and girls showed a same-gender preference, irrespective of content. Findings suggest that STEM-related gender stereotypes might lead girls to trust scientific information presented by men over women in certain contexts.  相似文献   
216.
An electronic apparatus using infrared beams for monitoring the movements of individual bees under dark conditions is described. The searching behavior of workers in an arena was monitored over 2-h periods. Mean ambulatory velocity for one bee over a distance of 100 mm was 45.6±1.51 mm/sec (n=45). Thigmokinesis and temporal activity patterns are illustrated.  相似文献   
217.
218.
219.
220.
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