全文获取类型
收费全文 | 902篇 |
免费 | 20篇 |
国内免费 | 1篇 |
专业分类
923篇 |
出版年
2017年 | 13篇 |
2016年 | 13篇 |
2014年 | 14篇 |
2013年 | 94篇 |
2012年 | 27篇 |
2011年 | 20篇 |
2010年 | 12篇 |
2009年 | 11篇 |
2008年 | 26篇 |
2007年 | 27篇 |
2006年 | 21篇 |
2005年 | 21篇 |
2004年 | 15篇 |
2003年 | 26篇 |
2002年 | 28篇 |
2001年 | 17篇 |
2000年 | 13篇 |
1999年 | 13篇 |
1998年 | 10篇 |
1997年 | 12篇 |
1995年 | 9篇 |
1994年 | 9篇 |
1993年 | 10篇 |
1992年 | 10篇 |
1990年 | 13篇 |
1989年 | 11篇 |
1987年 | 9篇 |
1986年 | 9篇 |
1985年 | 11篇 |
1984年 | 13篇 |
1983年 | 10篇 |
1982年 | 10篇 |
1981年 | 13篇 |
1980年 | 14篇 |
1979年 | 9篇 |
1978年 | 16篇 |
1976年 | 8篇 |
1975年 | 10篇 |
1974年 | 9篇 |
1973年 | 16篇 |
1972年 | 13篇 |
1969年 | 10篇 |
1966年 | 15篇 |
1964年 | 12篇 |
1963年 | 10篇 |
1961年 | 10篇 |
1958年 | 10篇 |
1956年 | 11篇 |
1953年 | 9篇 |
1951年 | 7篇 |
排序方式: 共有923条查询结果,搜索用时 0 毫秒
161.
The ability of human observers to discriminate the orientation of a pair of straight lines differing by 3° improved with practice. The improvement did not transfer across hemifield or across quadrants within the same hemifield. The practice effect occurred whether or not observers were given feedback. However, orientation discrimination did not improve when observers attended to brightness rather than orientation of the lines. This suggests that cognitive set affects tuning in retinally local orientation channels (perhaps by guiding some form of unsupervised learning mechanism) and that retinotopic feature extraction may not be wholly preattentive. 相似文献
162.
Hillman H 《Science and engineering ethics》1997,3(2):121-136
The concept of parafraud is described as “illogical or improper behaviour towards other peoples’ views or publications,” and
19 different kinds of common practices coming under this heading are listed. Ways of combating it are suggested.
Dr. Hillman was the Reader in Physiology at the University of Surrey from 1968 to 1995 and Director of the Unity Laboratory
of Applied Neurobiology from 1970 to date. 相似文献
163.
Twenty-four aphasic and fifteen right brain-damaged subjects were compared on their ability to identify the objects whose use was depicted in a series of twenty videotaped pantomimes. Aphasics were inferior to right brain-damaged patients in inferring object use. Success was correlated with Performance IQ, but not with language measures. Analysis of movement features contributing to subjects' choices reveal speed of movement and object weight to be the most robust and hand shape and size to be the most fragile.This study was supported in part by the grants from the National Institute of Health (RO1 EY07861) and McDonnell Pew Foundation (T89-01245-017) to LMV and by the USPHS grant NS06209 to H.G. and L.M.V. The authors are indebted to the staff of the Neuropsychology and Communication Disorders Departments at the New England Rehabilitation Hospital for making available the test records of the patients included in this study. All the patients included in the study have signed the informed consent forms according to the regulations of the Human Subjects Committee at New England Rehabilitation Hospital. 相似文献
164.
Hillman H 《Science and engineering ethics》1995,1(1):49-58
The origins of research projects, the duties of supervisors and research workers, the subjective elements in research and
the difficulties of publication are reviewed, as a guide to the complexities of executing an honest research project. It is
assumed that research carried out with maximal intellectual integrity will result in real advances. 相似文献
165.
Three experiments were conducted at two east coast Universities with primarily Caucasian students participating. In experiment one, college students disclosed that they scored in the 91st percentile or in the top half on an intelligence-related test to a female student who had scored either in the 42nd percentile (low-achieving) or the 92nd percentile (high-achieving) on the same test. Women who disclosed modestly (top half) judged that the low-achieving other felt better than women who disclosed immodestly (91st percentile). Also, women who disclosed modestly judged that the other liked them more than women who disclosed immodestly. These effects did not occur with men. In experiment two, college students disclosed that they scored in the 91st percentile or in the top half on an intelligence-related test to either a male or a female student who had scored in the 42nd percentile on the same test. Women who disclosed modestly judged that a female peer liked them more and felt more intelligent and confident than did women who disclosed immodestly. In contrast, men who disclosed immodestly judged that a female peer liked them more than did men who disclosed modestly. Regardless of the peer's gender, women judged that peers felt worse about themselves, were less happy and more upset when subjects had disclosed immodestly. In contrast, men judged that the peer felt better about himself or herself, was happier and less upset when the subjects had disclosed immodestly. In Experiment 3, male and female participants rated the intelligence-related test as equally difficult and rated doing well on them as equally important. Participants also indicated that doing well was equally important to males and females. Thus, ego-involvement is ruled out as an alternative explanation. These findings support the interpretation of previous research that women may choose to disclose modestly in an effort to be better liked or to protect the other's feelings. 相似文献
166.
A variance-components analysis is presented for paired comparisons in terms of three components:s, the scale value of the stimuli;d, a deviation from the linear model specified by the law of comparative judgment; andb, a binomial error component. Estimates are given for each of the three variances,
s
2
,
d
2
, and
b
2
. Several coefficients, analogous to reliability coefficients, based on these three variances are indicated. The techniques are illustrated in a replicated comparison of handwriting specimens.This research was jointly supported in part by Princeton University, the Office of Naval Research under contract Nonr-1858(15), and the National Science Foundation under grant NSF G-642, and in part by Educational Testing Service. Reproduction in whole or in part is permitted for any purpose of the United States Government.Thanks are due to Ledyard Tucker and Frederic Lord for valuable suggestions on the development presented here. 相似文献
167.
168.
Harold D. Carrier 《Knowledge, Technology, and Policy》1990,3(1):46-61
This article argues that the metaphors presently employed in describing artificial intelligence represent the use of personification
and anthropomorphism. They attempt to develop an isomorphic relationship between the human mind and a computer’s logic. It
is suggested that an analogic metaphor is more appropriate in describing this relationship and is more epistemologically correct.
Dr. Carrier is an assistant professor of organizational behavior at the School of Management, Rensselaer Polytechnic Institute,
Troy, New York 12180. His current research interests include the behavioral and philosophic aspects of artificial intelligence
and expert computer systems in work situations, and the behavioral perceptions of decision processes in the workplace. 相似文献
169.
Harold E. Cheatham 《Sex roles》1984,11(1-2):141-153
This study reports male attitudes toward women beginning with the admission of women in 1976 to the U.S. Coast Guard Academy. It assesses these attitudes as a consequence of the norms of the military system and notes a trend toward more positive attitudes by successive classes since the Class of 1979. Programmatic measures to nurture and facilitate this positive trend are recommended.The author gratefully acknowledges the contribution of Dr. Steven P. Gunn, formerly of Connecticut College, to the development of this research. 相似文献
170.
A computer interview was developed to collect information about drug use/abuse from high school students. Responses to this interview were compared with those obtained from an identical paper-and-pencil questionnaire given to the same students, in counterbalanced order. Results were comparable for the two methods, but missing data and logically inconsistent answers obtained with the paper-and-pencil questionnaire were not possible with the computer interview. The overwhelming majority of respondents preferred the computer interview as a means of data collection. 相似文献