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   178432篇
  免费   7839篇
  国内免费   162篇
  2021年   1529篇
  2020年   2802篇
  2019年   3468篇
  2018年   3653篇
  2017年   4081篇
  2016年   4724篇
  2015年   3947篇
  2014年   4831篇
  2013年   23660篇
  2012年   4913篇
  2011年   3988篇
  2010年   4062篇
  2009年   4864篇
  2008年   4198篇
  2007年   3816篇
  2006年   4316篇
  2005年   4248篇
  2004年   3728篇
  2003年   3395篇
  2002年   3184篇
  2001年   3399篇
  2000年   3236篇
  1999年   3255篇
  1998年   2836篇
  1997年   2693篇
  1996年   2592篇
  1995年   2454篇
  1994年   2398篇
  1993年   2357篇
  1992年   2706篇
  1991年   2498篇
  1990年   2393篇
  1989年   2271篇
  1988年   2271篇
  1987年   2280篇
  1986年   2242篇
  1985年   2432篇
  1984年   2553篇
  1983年   2359篇
  1982年   2395篇
  1981年   2360篇
  1980年   2216篇
  1979年   2289篇
  1978年   2226篇
  1977年   2180篇
  1976年   1995篇
  1975年   2050篇
  1974年   2106篇
  1973年   2000篇
  1972年   1539篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
111.
112.
Some languages create the impression of being stress timed. Claims have been made that this timing of stressed syllables enables the listener to predict the future locations of informative parts later in a sentence. The fact that phoneme monitoring is delayed when targets in a spoken sentence are displaced has been taken as supporting this claim (Meltzer, Martin, Bergfeld Mills, Imhoff and Zohar, 1976). In the present study temporal displacement was induced without introducing phonetic discontinuities. In Dutch sentences a word just in advance of a target-bearing word was replaced by another one differing in length. Results show that the temporal displacement per se did not have any effect on phoneme-monitoring reaction times. Implications for a theory of fpeech processing are discussed.  相似文献   
113.
The ability of two species of tits to remember the location and/or features of an object was tested in a delayed-matching-to-sample procedure. Three values of retention interval between presentation of the sample stimulus and the choice--30 sec, 5 min, and 15 min--were used. Both species performed at above-chance level at all retention intervals, and there was no significant decline in accuracy with increasing interval. A pool of 100 stimulus objects was used, but the results of control trials indicated that the birds responded primarily to location rather than stimulus features of the object itseif. Although the food-storing marsh tit tended to perform at a higher level than the non-storing great tit, the only significant difference between the species was in the first 50 trials of the first treatment, when the birds were acquiring the task. The results are discussed in relation to the hypothesized special memory capacity of food-storing birds.  相似文献   
114.
Experiment 1 replicated Yaniv and Meyer's (1987) finding that lexical decision and episodic recognition performance was better for words previously yielding high-accessibility levels (a combination of feeling-of-knowing and tip-of-the-tongue ratings) in comparison with those yielding low-accessibility levels in a rare word definition task. Experiment 2 yielded the same pattern even though lexical decisions preceded accessibility estimates by a full week. Experiment 3 dismissed the possibility that the Experiment 2 results may have been due to a long-term influence from the lexical decision task to the rare word judgment task. These results support a model in which Ss (a) retrieve topic familiarity information in making accessibility estimates in the rare word definition task and (b) use this information to modulate lexical decision performance.  相似文献   
115.
116.
Journal of Religion and Health - Exposure to environmental tobacco smoke (ETS) is associated with increased risk of disease and death. Reports on ETS and religion are lacking. Data from the...  相似文献   
117.
118.
119.
As the complexity of the challenges presented by our interactions with our planet continues to grow, we must develop new modes of knowledge production. In these modes, distinctions between multidisciplinary and inter-disciplinary activities and processes have renewed importance. There are at least two distinct types of interdisciplinary activities distinguished by the disciplinary breadth they attempt to bridge. In the narrow case, reductionist processes reveal a common underlying principle or process which can serve as a Rosetta stone. In the broad case, no such common arbiter exists. Investigators must develop integrating vocabulary in the context of the full breadth of their work. His primary activities are the fostering of university-wide interdisciplinary research and curriculum programs focused on global change with the goal of developing Columbia into a world leader in issues related to global stewardship.  相似文献   
120.
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