全文获取类型
收费全文 | 414篇 |
免费 | 61篇 |
国内免费 | 129篇 |
出版年
2023年 | 4篇 |
2022年 | 11篇 |
2021年 | 22篇 |
2020年 | 34篇 |
2019年 | 27篇 |
2018年 | 27篇 |
2017年 | 23篇 |
2016年 | 23篇 |
2015年 | 23篇 |
2014年 | 24篇 |
2013年 | 58篇 |
2012年 | 22篇 |
2011年 | 26篇 |
2010年 | 17篇 |
2009年 | 22篇 |
2008年 | 19篇 |
2007年 | 35篇 |
2006年 | 23篇 |
2005年 | 32篇 |
2004年 | 19篇 |
2003年 | 17篇 |
2002年 | 8篇 |
2001年 | 7篇 |
2000年 | 12篇 |
1999年 | 9篇 |
1998年 | 4篇 |
1997年 | 11篇 |
1996年 | 8篇 |
1995年 | 8篇 |
1994年 | 4篇 |
1993年 | 4篇 |
1992年 | 3篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1985年 | 3篇 |
1983年 | 3篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1975年 | 1篇 |
排序方式: 共有604条查询结果,搜索用时 15 毫秒
1.
人类颜色视觉的计算理论 总被引:2,自引:0,他引:2
该文有机地结合了计算视觉理论和生态学视觉理论,指出颜色信息处理的根本任务是检测环境中的光不变量。在此基础上,作者提出了颜色视觉的计算理论以及计算理论本身的生物学标准。初级视觉计算是典型的不适定问题,动物的视觉系统则利用视环境中存在的条件将该不适定问题转化为定解问题。本文引入颜色视觉计算的免要条件,客观性约束,以及颜色认知的神经表象,证明了上述约束下颜色算法的存在性。本文给出了构造颜色知觉的基本假设。同时,该文还讨论了与上述问题密切相关的几个基本问题:神经表象的完备性,主观色觉的客观性,明度知觉和颜色知觉的统一,人类主观色觉的实现方式。 相似文献
2.
ULF DIMBERG 《Scandinavian journal of psychology》1990,31(3):228-233
This study explored whether males and females differ in facial muscle activity when exposed to tone stimuli with different intensity. Males and females were repeatedly exposed to 95 dB and 75 dB 1000 Hz tones while their facial electromyographic (EMG) activity from corrugator and zygomatic muscle regions were measured. Skin conductance responses were also measured. It was found that 95 dB but not 75 dB tones evoked increased corrugator activity. This effect differed significantly between males and females. Thus, it was only females that reacted with a significant increased corrugator response to the high intensity tone. While facial responses differed between the sexes, the skin conductance response patterns did not. Consistent with previous research it is concluded that females are more facially expressive than are males. 相似文献
3.
LARS-OLOV LUNDQVIST 《Scandinavian journal of psychology》1995,36(2):130-141
The purpose of this study is to explore whether subjects exposed to stimuli of facial expressions respond with facial electromyographic (EMG) reactions consistent with the hypothesis that facial expressions are contagious. This study further examines whether males and females differ in facial EMG intensity. Two experiments demonstrated that subjects responded with facial EMG activity over the corrugator supercilii, the zygomatic major , the lateral frontalis , the depressor supercilii , and the levator labii muscle regions to stimuli of sad, angry, fearful, surprised, disgusted and happy faces, that, to large extent, were consistent with the hypothesis that facial expressions are contagious. Aspects of gender differences reported in earlier studies were found, indicating a tendency for females to respond with more pronounced facial EMG intensity. 相似文献
4.
在汉语中,副词是一种比较独特的词类,它没有具体形象的物体可作为理解支柱,因而儿童对它的掌握较晚。在各类副词中,5、6岁儿童对范围副词的理解最佳,时间副词次之,程度副词最差。三者的差异均有非常显著性意义。即使在每一类副词中,由于儿童概念发展的不均衡性,掌握的顺序也有先后。 相似文献
5.
6.
7.
8.
Lloyd Bond 《Psychometrika》1979,44(3):351-355
Tucker, Damarin and Messick proposed a base-free measure of change which involves the computation of residual scores that are uncorrelated with true scores on the pretest. The present note discusses this change measure and demonstrates that, because of an incorrect derivation by the authors, properties they attribute to (the coefficient for the regression of true scores from the second testing on true scores from the first testing) are, in fact, properties ofb, the ordinary regression coefficient. A correct derivation of the initial position—change correlation in terms of is obtained, and Tucker et al.'s discussion of the law of initial values is reconsidered.The preparation of this paper was supported by the Learning Research and Development Center supported in part as a research and development center by funds from the National Institute of Education. 相似文献
9.
PurposeThe aim of this cross-sectional study was to explore the impact and experience of stuttering, and attitude to communication for female and male teenagers who stutter (TWS) in comparison with teenagers with no stutter (TWNS).MethodsThe Swedish version of the Overall Assessment of the Speaker’s Experience of Stuttering (OASES-T-S), was administered to 56 TWS, 13–17 years old (26 females, 30 males). An adapted version of OASES, Attitude to Speech and Communication (ASC), was administered to 233 TWNS. The impact scores were analyzed in relation to sex in TWS and TWNS.ResultsFemale TWS reported that stuttering had a greater impact on their life than it did on male TWS (on average 0.5 higher impact scores; Hedges’ g = 0.87). The differences did not seem to be caused by differences in severity of overt stuttering symptoms. Female and male TWS particularly differed on items related to difficulties in day-to-day communication and affective/behavioral reactions to stuttering. Such sex differences were not as pronounced among TWNS, suggesting that teenage women may be more vulnerable to the negative impact of stuttering than men the same age.ConclusionFemale teenagers report more negative experiences and a greater tendency to use avoidance strategies than male teenagers. 相似文献
10.
本研究采用ERP技术和学习-再认范式考察视觉输入的颜色和记忆中的物体颜色知识一致性对情景记忆编码和提取的影响。结果显示, 在对物体图片进行编码时颜色不一致图片诱发更大N400, 而提取阶段则对颜色一致图片有更多熟悉性加工(实验1); 物体名称能够更快激活典型颜色知识, 对颜色一致名称有更多细节回想(LPC更正) (实验2)。实验结果表明, 颜色一致促进知觉水平的记忆编码, 而阻碍语义水平编码。同时, 颜色一致促进物体图片提取(知觉水平)中的熟悉性和回想过程; 而对物体名称提取(概念水平)的促进作用仅表现在回想上。此外, 颜色与物体名称有着密切联系, 同样影响物体的语义表征, 支持激活-扩散模型理论。本研究从知觉和概念水平上为揭示物体颜色在联结记忆中的作用提供了证据。 相似文献