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   184246篇
  免费   8158篇
  国内免费   155篇
  2020年   2791篇
  2019年   3455篇
  2018年   3769篇
  2017年   4132篇
  2016年   4803篇
  2015年   3950篇
  2014年   4810篇
  2013年   23476篇
  2012年   5113篇
  2011年   4371篇
  2010年   4111篇
  2009年   4894篇
  2008年   4452篇
  2007年   3995篇
  2006年   4441篇
  2005年   4316篇
  2004年   3880篇
  2003年   3466篇
  2002年   3257篇
  2001年   4028篇
  2000年   3779篇
  1999年   3553篇
  1998年   2883篇
  1997年   2695篇
  1996年   2619篇
  1995年   2450篇
  1994年   2412篇
  1993年   2370篇
  1992年   2915篇
  1991年   2722篇
  1990年   2563篇
  1989年   2477篇
  1988年   2437篇
  1987年   2403篇
  1986年   2420篇
  1985年   2662篇
  1984年   2646篇
  1983年   2404篇
  1982年   2403篇
  1981年   2362篇
  1980年   2212篇
  1979年   2355篇
  1978年   2260篇
  1977年   2209篇
  1976年   2019篇
  1975年   2095篇
  1974年   2187篇
  1973年   2069篇
  1972年   1661篇
  1971年   1599篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
201.
202.
203.
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   
204.
205.
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   
206.
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   
207.
208.
209.
210.
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