全文获取类型
收费全文 | 6468篇 |
免费 | 387篇 |
国内免费 | 2篇 |
出版年
2021年 | 58篇 |
2020年 | 113篇 |
2019年 | 132篇 |
2018年 | 171篇 |
2017年 | 217篇 |
2016年 | 217篇 |
2015年 | 158篇 |
2014年 | 188篇 |
2013年 | 747篇 |
2012年 | 310篇 |
2011年 | 329篇 |
2010年 | 200篇 |
2009年 | 213篇 |
2008年 | 263篇 |
2007年 | 282篇 |
2006年 | 236篇 |
2005年 | 234篇 |
2004年 | 227篇 |
2003年 | 204篇 |
2002年 | 214篇 |
2001年 | 103篇 |
2000年 | 112篇 |
1999年 | 106篇 |
1998年 | 93篇 |
1997年 | 87篇 |
1996年 | 94篇 |
1995年 | 87篇 |
1994年 | 77篇 |
1993年 | 62篇 |
1992年 | 82篇 |
1991年 | 62篇 |
1990年 | 52篇 |
1989年 | 52篇 |
1988年 | 49篇 |
1987年 | 44篇 |
1986年 | 48篇 |
1985年 | 63篇 |
1984年 | 62篇 |
1983年 | 52篇 |
1982年 | 75篇 |
1981年 | 76篇 |
1980年 | 55篇 |
1979年 | 54篇 |
1978年 | 44篇 |
1977年 | 67篇 |
1976年 | 41篇 |
1975年 | 48篇 |
1974年 | 39篇 |
1973年 | 48篇 |
1972年 | 36篇 |
排序方式: 共有6857条查询结果,搜索用时 15 毫秒
191.
Steven W. Zucker Kent A. Stevens Peter Sander 《Attention, perception & psychophysics》1983,34(6):513-522
The Gestalt studies demonstrated the tendency to visually organize dots on the basis of similarity, proximity, and global properties such as closure, good continuation, and symmetry. The particular organization imposed on a collection of dots is thus determined by many factors, some local, some global. We discuss computational reasons for expecting the initial stages of grouping to be achieved by processes with purely local support. In the case of dot patterns, the expectation is that neighboring dots are grouped as a function of proximity and similarity of contrast, by processes that are independent of the overall organization and the various global factors. We describe experiments that suggest a purely local relationship between proximity and brightness similarity in perceptual grouping. 相似文献
192.
Nondeterministic programs occurring in recently developed programming languages define nondeterminate partial functions. Formulas (Boolean expressions) of such nondeterministic languages are interpreted by a nonempty subset of {T (“true”), F (“false”), U (“undefined)}. As a semantic basis for the propositional part of a corresponding nondeterministic three-valued logic we study the notion of a truth-function over {T, F, U} which is computable by a nondeterministic evaluation procedure. The main result is that these truth-functions are precisely the functions satisfying four basic properties, called \( \subseteq \) -isotonic, \( \subseteq \) ?-isotonic, hereditarily guarded, and hereditarily guard-using, and that a function satisfies these properties iff it is explicitly definable (in a certain normal form) from “if..then..else..fi”, binary choice, and constants. 相似文献
193.
Joop van der Pllgt Peter Ester Joop van der Linden 《European journal of social psychology》1983,13(4):437-439
Studied the effects of attitude extremity on perceived consensus and willingness to ascribe trait terms to others with either pro or anti nuclear attitudes. Results showed that attitude extremity affected consensus estimates. Trait attributions revealed a clear effect for valence, especially for the extreme attitude groups. Subjects with extreme attitudes also ascribed more traits to both pro and anti others than subjects with relatively moderate attitudes. 相似文献
194.
This article discusses the attenuating mechanisms of group psychotherapy that support and enhance analytic work with borderline patients in combined group and individual psychotherapy. A group case study is presented which addresses the manifestations and management of transference and countertransference in a combined treatment approach. Combined treatment was observed to respond effectively to both the intrapsychic and interpersonal difficulties of borderline patients. A multidimensional model for treating these patients in a community mental health setting is proposed. 相似文献
195.
Dr. Peter H. Waxer 《Motivation and emotion》1983,7(4):365-376
What speaks louder, false words or false action? Raters assessed the anxiety level of 10 actors portraying their actual anxiety level and simulated displays of high anxiety. Raters were required to base judgments on either video cues alone or audio cues alone. Findings indicate that false words speak louder than false action, with audio-based judgments generating greater judgmental error in both straight and dissembled anxiety conditions. Although raters expressed equal confidence in judgments based on either verbal or nonverbal cues, results indicated that verbal cues played a larger role in emotional deceit. Differences between real and simulated anxiety cues were delineated, suggesting ways of detecting emotional deception. Results were discussed in light of current thought regarding channel contribution in deception. 相似文献
196.
197.
Correlates of work-home role conflict for dual-earner couples were examined. Respondents (N= 208) were an equal number of married, employed men and women with children. Data were collected in the northeastern U.S.A. through a survey which measured work-home role conflict, family climate, domestic responsibilities, and activities performed during one's free time. LISREL was used to determine if domestic responsibilities mediate the correlation between gender and work-home conflict. A regression analysis was used to determine the relative effects of domestic responsibilities and family climate on work-home conflict. Results indicate that (a) work-home role conflict is negatively related to family climate for men as well as for women, (b) gender differences in role conflict are partially attributable to gender differences in domestic responsibilities, and (c) domestic responsibilities and family climate each correlate significantly with work-home role conflict. Findings suggest that how one works hard (the conditions under which one lives) may be just as important as how hard one works (the number of tasks one performs). 相似文献
198.
ABSTRACT The aim of this study was to test whether the concept of an altruistic personality was valid for first aiders who intervened to help the victims of a traffic accident. We derived a number of relevant personality variables that should be related to the willingness to administer first aid. These include locus of control, social responsibility, belief in a just world, empathy, and instrumentality. We obtained data from proven first aiders who had intervened after a traffic accident. Thirty-four of these first aiders were matched to respondents from a subject pool on the basis of sex, age, and socioeconomic status. In addition, the willingness of these respondents to offer help after a traffic accident was taken into account. Only people who indicated that they had witnessed an accident and had not helped were included in the control group. Multivariate analyses of variance and covariance indicated that proven first aiders deviated from the control group on several dimensions: They described themselves as more internal, believed more in a just world, and emphasized more social responsibility and empathy. 相似文献
199.
Peter C. Holland 《Learning and motivation》1991,22(4)
The acquisition and transfer of stimulus control in discrete-trial operant feature positive and feature negative discriminations was examined in two experiments with rats. When the feature and target cues were presented simultaneously on compound training trials, the feature appeared to acquire simple excitatory or inhibitory control, which readily transferred to other target cues and which was substantially reduced by post-training counterconditioning. Conversely, when the feature preceded the target during training, the feature's control was relatively more specific to responding in the presence of its original target and less influenced counterconditioning. These results are comparable to outcomes of analogous experiments (previously reported) that used Pavlovian conditioning procedures. 相似文献
200.
The position sense of the tongue and aftereffects on the position sense subsequent to loading were directly investigated. Nine subjects judged the straightahead with the tongue before and after straining laterally with the tongue against the horizontal force induced by a 29.5-g weight. Two of these subjects also participated in the experiment after the surface of the tongue had been anesthetized. Prior loading of the tongue biased the subjects' subsequent judgment of the straight-ahead; following loading, the tongue was placed farther in the direction of the previous effort. The results are discussed with reference to postcontraction effects from experiments on loading the limb and eye. 相似文献