全文获取类型
收费全文 | 2651篇 |
免费 | 116篇 |
专业分类
2767篇 |
出版年
2021年 | 20篇 |
2020年 | 41篇 |
2019年 | 41篇 |
2018年 | 69篇 |
2017年 | 68篇 |
2016年 | 72篇 |
2015年 | 54篇 |
2014年 | 59篇 |
2013年 | 289篇 |
2012年 | 93篇 |
2011年 | 109篇 |
2010年 | 61篇 |
2009年 | 71篇 |
2008年 | 116篇 |
2007年 | 92篇 |
2006年 | 113篇 |
2005年 | 84篇 |
2004年 | 85篇 |
2003年 | 62篇 |
2002年 | 84篇 |
2001年 | 49篇 |
2000年 | 65篇 |
1999年 | 56篇 |
1998年 | 37篇 |
1997年 | 28篇 |
1996年 | 31篇 |
1995年 | 19篇 |
1994年 | 25篇 |
1993年 | 27篇 |
1992年 | 44篇 |
1991年 | 32篇 |
1990年 | 39篇 |
1989年 | 25篇 |
1988年 | 38篇 |
1987年 | 35篇 |
1986年 | 22篇 |
1985年 | 36篇 |
1984年 | 26篇 |
1983年 | 22篇 |
1980年 | 21篇 |
1979年 | 36篇 |
1977年 | 19篇 |
1976年 | 28篇 |
1975年 | 23篇 |
1974年 | 22篇 |
1973年 | 20篇 |
1972年 | 21篇 |
1971年 | 23篇 |
1968年 | 27篇 |
1966年 | 19篇 |
排序方式: 共有2767条查询结果,搜索用时 15 毫秒
111.
112.
Numerous investigators have reported that listeners are able to perceptually differentiate adult stutterers' and nonstutterers' fluent speech productions. However, findings from similar studies with children ranging in age from 3 to 9 yr have indicated that perceptual discrimination of child stutterers is difficult. A logical extension of this line of investigation would be to determine when during maturation from childhood to adulthood stutterers' fluent speech becomes perceptibly different than nonstutterers'. Therefore, in this study similar fluent speech samples from seven 12–16-yr-old adolescent male stutterers and seven matched nonstutterers were analyzed perceptually in a paired stimulus paradigm by 15 sophisticated listeners. Individual subject analyses using signal detection theory revealed that five of the seven stutterers were discriminated. When averaged for subject group comparison, these findings indicated that listeners successfully discriminated between the fluent speech of the two groups. Therefore, the perceptual difference in fluent speech production reported previously for adults appears to be present by adolescence. 相似文献
113.
114.
Salena Matthew G. Turko Andy J. Singh Angad Pathak Avani Hughes Emily Brown Culum Balshine Sigal 《Animal cognition》2021,24(3):395-406
Animal Cognition - With over 30,000 recognized species, fishes exhibit an extraordinary variety of morphological, behavioural, and life-history traits. The field of fish cognition has grown... 相似文献
115.
Anne Ferguson Jo Anne Blaymore Bier Jayne Cucca Lynne Andreozzi Barry Lester 《Infant mental health journal》1996,17(2):161-169
Feeding problems have been reported in infants with colic. The purpose of this study was to examine the nutritive sucking pattern of infants identified as having colic. Twenty-nine infants (16 with colic and 13 controls) between the ages of 1 to 3 months, being bottle-fed by their mothers, were observed by a blind examiner. We hypothesized that infants with colic would show greater disorganization in nutritive sucking and show greater variability in sucking rate than infants without colic, as assessed by the revised Neonatal Oral Motor Assessment Scale (NOMAS). Infants with colic were found to present a disorganized sucking pattern; namely, a lack of rhythmical movement and a difference in amount of sucks per burst than infants without colic. Methods of intervention are suggested. 相似文献
116.
Michael Schwartze Rachel M. Brown Emmanuel Biau Sonja A. Kotz 《International journal of psychology》2020,55(3):342-346
The informative value of time and temporal structure often remains neglected in cognitive assessments. However, next to information about stimulus identity we can exploit temporal ordering principles, such as regularity, periodicity, or grouping to generate predictions about the timing of future events. Such predictions may improve cognitive performance by optimising adaptation to dynamic stimuli. Here, we investigated the influence of temporal structure on verbal working memory by assessing immediate recall performance for aurally presented digit sequences (forward digit span) as a function of standard (1000 ms stimulus-onset-asynchronies, SOAs), short (700 ms), long (1300 ms) and mixed (700–1300 ms) stimulus timing during the presentation phase. Participant's digit spans were lower for short and mixed SOA presentation relative to standard SOAs. This confirms an impact of temporal structure on the classic “magical number seven,” suggesting that working memory performance can in part be regulated through the systematic application of temporal ordering principles. 相似文献
117.
James S. Magnuson Heejo You Sahil Luthra Monica Li Hosung Nam Monty Escabí Kevin Brown Paul D. Allopenna Rachel M. Theodore Nicholas Monto Jay G. Rueckl 《Cognitive Science》2020,44(4):e12823
Despite the lack of invariance problem (the many-to-many mapping between acoustics and percepts), human listeners experience phonetic constancy and typically perceive what a speaker intends. Most models of human speech recognition (HSR) have side-stepped this problem, working with abstract, idealized inputs and deferring the challenge of working with real speech. In contrast, carefully engineered deep learning networks allow robust, real-world automatic speech recognition (ASR). However, the complexities of deep learning architectures and training regimens make it difficult to use them to provide direct insights into mechanisms that may support HSR. In this brief article, we report preliminary results from a two-layer network that borrows one element from ASR, long short-term memory nodes, which provide dynamic memory for a range of temporal spans. This allows the model to learn to map real speech from multiple talkers to semantic targets with high accuracy, with human-like timecourse of lexical access and phonological competition. Internal representations emerge that resemble phonetically organized responses in human superior temporal gyrus, suggesting that the model develops a distributed phonological code despite no explicit training on phonetic or phonemic targets. The ability to work with real speech is a major advance for cognitive models of HSR. 相似文献
118.
Psychonomic Bulletin & Review - Speech recognition is improved when the acoustic input is accompanied by visual cues provided by a talking face (Erber in Journal of Speech and Hearing Research,... 相似文献
119.
Heinrich Dennis D. U. Vila Pouca Catarina Brown Culum Huveneers Charlie 《Animal cognition》2020,23(5):951-952
Animal Cognition - In the original publication of the article, the Fig. 4 was erroneously published. 相似文献
120.
Neighborhood Stress and Life Satisfaction: Is there a Relationship for African American Adolescents?
Valois Robert F. Kerr Jelani C. Carey Michael P. Brown Larry K. Romer Daniel DiClemente Ralph J. Vanable Peter A. 《Applied research in quality of life》2020,15(1):273-296
Applied Research in Quality of Life - This study identified associations between perceived neighborhood stress and adolescents’ perceptions of life satisfaction. African American adolescents... 相似文献