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   612篇
  免费   167篇
  国内免费   49篇
  828篇
  2025年   3篇
  2024年   14篇
  2023年   13篇
  2022年   11篇
  2021年   33篇
  2020年   34篇
  2019年   43篇
  2018年   42篇
  2017年   38篇
  2016年   49篇
  2015年   29篇
  2014年   31篇
  2013年   83篇
  2012年   42篇
  2011年   37篇
  2010年   21篇
  2009年   27篇
  2008年   30篇
  2007年   30篇
  2006年   28篇
  2005年   37篇
  2004年   17篇
  2003年   18篇
  2002年   14篇
  2001年   22篇
  2000年   11篇
  1999年   15篇
  1998年   7篇
  1997年   8篇
  1996年   6篇
  1995年   4篇
  1994年   3篇
  1993年   6篇
  1992年   1篇
  1991年   3篇
  1990年   5篇
  1989年   3篇
  1987年   1篇
  1986年   1篇
  1985年   2篇
  1983年   1篇
  1982年   1篇
  1981年   2篇
  1978年   2篇
排序方式: 共有828条查询结果,搜索用时 15 毫秒
41.
文章在扩展博弈上,给出了多值逻辑的语义赋值博弈的一般框架,避免了博弈者在多值逻辑的语义博弈中声明无穷对象的问题;然后通过Eloise赢的策略定义博弈的语义概念——赋值,证明了多值逻辑的博弈语义与Tarski语义是等价的;最后,根据语义赋值博弈框架对经典逻辑进行了博弈化。  相似文献   
42.
Analogies must be symmetric. If a is like b, then b is like a. So if a has property R, and if R is within the scope of the analogy, then b (probably) has R. However, analogical arguments generally single out, or depend upon, only one of a or b to serve as the basis for the inference. In this respect, analogical arguments are directed by an asymmetry. I defend the importance of this neglected – even when explicitly mentioned – feature in understanding analogical arguments.  相似文献   
43.
44.
45.
    
Most studies in the literature propose that new words should be presented in unrelated sets due to interfering effect of learning vocabulary in semantic sets. Semantically-related words are suggested to be taught in different sessions to avoid this negative effect. However, that is implausible for most second language (L2) teachers owing to the restrictions from curricula or coursebooks, most of which serve new words in semantic fields. The literature does not shed light on how to tackle that problem. Accordingly, this study involves three sets of classroom research conducted with 58 young EFL learners to investigate the effects of mnemonics on minimizing the interference of semantic clustering of new vocabulary. Within 15-week course, one intact class was taught target words through mnemonics while the control group received similar instruction with sentence-context method. The study results demonstrated that mnemonically-instructed L2 learners outperformed on both immediate and delayed recognition of target words.  相似文献   
46.
47.
    
As a clinical model of hippocampal dysfunction, transient global amnesia (TGA) causes reversible memory disturbance. While episodic memory deficits in TGA patients have been extensively described, data regarding semantic memory involvement are sparse and contradictory. We report impaired semantic fluency performance in 16 patients with hippocampal lesions on MRI during acute TGA compared to their performance one day later and to that of 20 healthy subjects. Our findings support the involvement of the hippocampus in semantic retrieval.  相似文献   
48.
    
Appraisal theories of emotion, and particularly the Component Process Model, claim that the different components of the emotion process (action tendencies, physiological reactions, expressions, and feeling experiences) are essentially driven by the results of cognitive appraisals and that the feeling component constitutes a central integration and representation of these processes. Given the complexity of the proposed architecture, comprehensive experimental tests of these predictions are difficult to perform and to date are lacking. Encouraged by the “lexical sedimentation” hypothesis, here we propose an indirect examination of the compatibility of the theoretical assumptions with the semantic structure of a set of major emotion words as measured in a cross-language and cross-cultural study. Specifically, we performed a secondary analysis of the large-scale data set with ratings of affective features covering all components of the emotion process for 24 emotion words in 27 countries, constituting profiles of emotion-specific appraisals, action tendencies, physiological reactions, expressions, and feeling experiences. The results of a series of hierarchical regression analyses to examine the prediction of the theoretical model are highly consistent with the claim that appraisal patterns determine the structure of the response components, which in turn predict central dimensions of the feeling component.  相似文献   
49.
    
The cognitive system is an artificial intelligence product that integrates natural language processing techniques. The biggest d on logical reasoning, which can help users improve exploration and accelerate discovery. On the basis of natural language processing and logical reasoning, the paper adopts similarity algorithm bas difference between big data analysis systems and cognitive systems is that cognitive systems can directly deal with the problems raised by natural language forms and provide predictions baseded on question sentences, designs a cognitive system for specific domains, and finally realizes it on the NAO robot platform.  相似文献   
50.
    
Effective use of semantic knowledge requires a set of conceptual representations and control processes which ensure that currently relevant aspects of this knowledge are retrieved and selected. It is well-established that levels of semantic knowledge increase across the lifespan. However, the effects of ageing on semantic control processes have not been assessed. I addressed this issue by comparing the performance profiles of young and older people on a verbal comprehension test. Two sets of variables were used to predict accuracy and RT in each group: (1) the psycholinguistic properties of words probed in each trial and (2) the performance on each trial by two groups of semantically impaired neuropsychological patients. Young people demonstrated poor performance for low-frequency and abstract words, suggesting that they had difficulty processing words with intrinsically weak semantic representations. Indeed, performance in this group was strongly predicted by the performance of patients with semantic dementia, who suffer from degradation of semantic knowledge. In contrast, older adults performed poorly on trials where the target semantic relationship was weak and distractor relationships strong – conditions which require high levels of controlled processing. Their performance was not predicted by the performance of semantic dementia patients, but was predicted by the performance of patients with semantic control deficits. These findings indicate that the effects of ageing on semantic cognition are more complex than has previously been assumed. While older people have larger stores of knowledge than young people, they appear to be less skilled at exercising control over the activation of this knowledge.  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