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   200513篇
  免费   8799篇
  国内免费   157篇
  2020年   2806篇
  2019年   3482篇
  2018年   3837篇
  2017年   4257篇
  2016年   4837篇
  2015年   3942篇
  2014年   4830篇
  2013年   23493篇
  2012年   5377篇
  2011年   4789篇
  2010年   4286篇
  2009年   4943篇
  2008年   4871篇
  2007年   4498篇
  2006年   4798篇
  2005年   4681篇
  2004年   4158篇
  2003年   3749篇
  2002年   3604篇
  2001年   4632篇
  2000年   4473篇
  1999年   4026篇
  1998年   2942篇
  1997年   2777篇
  1996年   2696篇
  1995年   2493篇
  1994年   2462篇
  1993年   2425篇
  1992年   3346篇
  1991年   3149篇
  1990年   3013篇
  1989年   2844篇
  1988年   2813篇
  1987年   2787篇
  1986年   2824篇
  1985年   3014篇
  1984年   2936篇
  1983年   2658篇
  1982年   2500篇
  1981年   2481篇
  1980年   2310篇
  1979年   2759篇
  1978年   2434篇
  1977年   2334篇
  1976年   2165篇
  1975年   2452篇
  1974年   2559篇
  1973年   2516篇
  1972年   2097篇
  1968年   1968篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
211.
212.
213.
214.
215.
216.
217.
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   
218.
219.
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   
220.
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   
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