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   179006篇
  免费   7969篇
  国内免费   160篇
  2021年   1544篇
  2020年   2867篇
  2019年   3543篇
  2018年   3710篇
  2017年   4105篇
  2016年   4801篇
  2015年   4012篇
  2014年   4908篇
  2013年   23957篇
  2012年   4932篇
  2011年   4096篇
  2010年   4079篇
  2009年   4911篇
  2008年   4248篇
  2007年   3800篇
  2006年   4350篇
  2005年   4279篇
  2004年   3770篇
  2003年   3421篇
  2002年   3215篇
  2001年   3460篇
  2000年   3314篇
  1999年   3286篇
  1998年   2878篇
  1997年   2722篇
  1996年   2625篇
  1995年   2473篇
  1994年   2427篇
  1993年   2378篇
  1992年   2669篇
  1991年   2525篇
  1990年   2338篇
  1989年   2264篇
  1988年   2231篇
  1987年   2212篇
  1986年   2185篇
  1985年   2454篇
  1984年   2555篇
  1983年   2337篇
  1982年   2397篇
  1981年   2365篇
  1980年   2211篇
  1979年   2238篇
  1978年   2187篇
  1977年   2170篇
  1976年   1979篇
  1975年   2007篇
  1974年   2098篇
  1973年   1941篇
  1972年   1551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