全文获取类型
收费全文 | 1272篇 |
免费 | 38篇 |
国内免费 | 2篇 |
专业分类
1312篇 |
出版年
2020年 | 24篇 |
2019年 | 23篇 |
2018年 | 31篇 |
2017年 | 21篇 |
2016年 | 26篇 |
2015年 | 27篇 |
2014年 | 29篇 |
2013年 | 145篇 |
2012年 | 47篇 |
2011年 | 46篇 |
2010年 | 31篇 |
2009年 | 39篇 |
2008年 | 60篇 |
2007年 | 48篇 |
2006年 | 41篇 |
2005年 | 27篇 |
2004年 | 38篇 |
2003年 | 38篇 |
2002年 | 35篇 |
2001年 | 13篇 |
2000年 | 15篇 |
1999年 | 18篇 |
1998年 | 19篇 |
1997年 | 21篇 |
1996年 | 16篇 |
1995年 | 9篇 |
1994年 | 14篇 |
1993年 | 12篇 |
1992年 | 18篇 |
1991年 | 16篇 |
1990年 | 11篇 |
1989年 | 10篇 |
1988年 | 14篇 |
1987年 | 13篇 |
1986年 | 11篇 |
1985年 | 16篇 |
1984年 | 12篇 |
1983年 | 13篇 |
1982年 | 14篇 |
1981年 | 13篇 |
1979年 | 19篇 |
1978年 | 15篇 |
1977年 | 15篇 |
1976年 | 26篇 |
1975年 | 18篇 |
1974年 | 13篇 |
1973年 | 12篇 |
1972年 | 11篇 |
1971年 | 10篇 |
1970年 | 10篇 |
排序方式: 共有1312条查询结果,搜索用时 0 毫秒
941.
942.
Katherine B. McKeithen Judith S. Reitman Henry H. Rueter Stephen C. Hirtle 《Cognitive psychology》1981,13(3):307-325
Like experts in other fields, expert computer programmers can recall at a glance far more information relevant to their field than novices can. One explanation for this difference is that experts not only have more information, they have it better organized into meaningful chunks. In this paper, we infer the details of individual programmers' chunks of key programming concepts using the Reitman—Rueter (Cognitive Psychology, 1980, 12(4), 554–581.) technique for inferring tree structures from recall orders. Differences in organizations accompany skill-level differences. Beginner programmers' organizations show a rich variety of common-language associations to these programming concepts; Intermediate programmers show mixtures of programming and common-language associations; and Experts show remarkably similar, but not identical, organizations based clearly on programming knowledge. 相似文献
943.
This study illustrates the use of a response cost token system to decrease inappropriate behaviors of mainstreamed students in the regular classroom milieu. Data were taken on a student's inappropriate request for teacher attention and another student's inappropriate verbalizations. A reversal design was employed. Results showed that a response cost token system was a viable and effective method for decreasing inappropriate behaviors of mainstreamed students in the regular classroom. Reasons for the effectiveness of this technique were discussed. 相似文献
944.
Conrad W. Snyder Jr. Roger P. Bridgman Henry G. Law 《Personality and individual differences》1981,2(4):265-272
Tucker's three-mode common factor analysis is used to explore the intrinsic individual differences in a figural, disjunctive conceptual behavior task. The results reveal differential shifts in the structure of the individual differences during concept identification. Individual patterns can be described by five factors, each of which specifies the parameter vales for the shape of the individual performance functions. A three-way core further identifies the nature of the individual differences factors. These results indicate that averaged curves for the separate response measures would not have adequately reflected the individual data in this sample. The present findings are consistent with earlier work and suggest that a better approach to the study of complex human behavior is to identify the individual differences intrinsic to the situation before mapping antecedent influences on the dimensionality of the behavior. 相似文献
945.
Stevens and Galanter’s (1957) iterative procedure for minimizing bias in category scaling was used for the scaling of loudness of white noise. The spacing obtained deviated systematically from a spacing constructed in accordance with an equal discriminability scale from a previous experiment (Eisler & Montgomery, 1972). For the stimulus spacing yielding a “pure” category scale, a magnitude scale was constructed too. Since the category scale could be predicted accurately by Fechnerian integration of this magnitude scale, it was concluded that the “pure” category scale is a pure discrimination scale. The discrepancy between the equal discriminability scale and the “pure” category scale was interpreted as a bias in the former scale due to greater recognizability of stimuli located at the extremes of the stimulus range. 相似文献
946.
This study investigates the characteristics of professional basketball referees which can account for their successful or unsuccessful performance on the court. Several role inactment skills such as achievement via independence contribute to the prediction of this performance. The main determinant identified, however, is at the group or organizational level. Superior referees have less interindividual variance than do average or relatively unsuccessful referees. This result is discussed in terms of the role requirements of performance in this case. Interpersonal consistency of judgment is relied on for matters permitting only consensual validity. Extensions of these findings to other role enactments are suggested. 相似文献
947.
This experiment investigated the role of response imagery on recognition of stimulus terms following associative training. Ss learned to associate 12 high-imagery or low-imagery responses with trigram stimuli by the study-associative matching procedure. Half the pairs were consistently paired and half were re-paired anew on each trial. Following associative training, Ss were given a stimulus recognition and an associative matching task The results indicated that the probability of stimulus recognition, given correct associative matching, was greater when the responses were high-imagery rather than low-imagery. In contrast, no rehable response imagery effects were found for the probability of stimulus recognition, given incorrect associative matching. It was argued that the locus of the response imagery effect was primarily during retrieval rather than during encoding. 相似文献
948.
An intercalated reinforcement technique is described. The method equates number of trials, response topography, sensory exposure, and frequency of reinforcement between reversal Ss overtrained on a discrimination and then trained on reversals and nonreversal Ss similarly overtrained but continued on the same discrimination. In extending previous successful work in the rat, monkeys were trained on spatial discrimination and reversal tasks in the WGTA at 50%, 75%, and 100% reinforcement in order to test the efficacy of learning by this procedure, and to compare the method with learning obtained by a more classical procedure. Learning rates were the same by both procedures. This technique, therefore, appears useful for investigating neurochemical (or other) correlates of learning unconfounded by performance or sensory effects. 相似文献
949.
Henry E. Kyburg Jr. 《Synthese》1992,90(2):189-203
There are a number of reasons for being interested in uncertainty, and there are also a number of uncertainty formalisms. These formalisms are not unrelated. It is argued that they can all be reflected as special cases of the approach of taking probabilities to be determined by sets of probability functions defined on an algebra of statements. Thus, interval probabilities should be construed as maximum and minimum probabilities within a set of distributions, Glenn Shafer's belief functions should be construed as lower probabilities, etc. Updating probabilities introduces new considerations, and it is shown that the representation of belief as a set of probabilities conflicts in this regard with the updating procedures advocated by Shafer. The attempt to make subjectivistic probability plausible as a doctrine of rational belief by making it more flowery — i.e., by adding new dimensions — does not succeed. But, if one is going to represent beliefs by sets of distributions, those sets of distributions might as well be based in statistical knowledge, as they are in epistemological or evidential probability. 相似文献
950.
James P. Henry 《Integrative psychological & behavioral science》1993,28(4):369-387
In addition to repeated reexperiencing of the event, the delayed effects of severe psychological trauma, i.e., post traumatic stress disorder (PTSD), present a paradoxical mix of symptoms. There is enhancement of the self-preservative catecholamine states; anger and fear with a contrasting sense of meaninglessness and a blunting of the emotional responses of the attachment behavior so critical for species preservation. Hormonally, there is a striking separation of the catecholamine response, which stays elevated and that of the hypothalamo-pituitary-adrenal (HPA) axis, which may remain at normal levels. Pathophysiologically, the reexperiencing of the trauma and the arousal may be associated with dysfunction of the locus coeruleus, amygdala and hippocampal systems. This article explores the consequences of an additional dysfunction: a dissociation of the hemispheres that appears to be responsible for the alexithymic avoidance and failure of the cortisol response that so often follow severe psychological trauma. There is neurophysiological evidence that the left and right hemispheres subserve different emotional sets that correspond to “control” and “appraisal,” i.e., very approximately to the self and species preservative behavioral complexes, respectively. Several studies point to physiological dissociation of hemispheric functions during alexithymia. This raises the question: What has been lost if in this condition the right side no longer fully contributes to integrated cerebral function? Right hemispheric damaged children lose critical social skills and in adults the related sense of familiarity critical for bonding is lost. Such losses of social sensibilities may account for the lack of empathy and difficulties with bonding found in sociopathy and borderline personality: conditions now believed to result from repeated psychological trauma during development. On the other hand, systems that promote right hemispheric contributions provide solacing access to a “Higher Power.” They also appear to protect against socially disordered behavior, substance abuse, the failure of the HPA axis and some aspects of the pathophysiology of chronic disease. 相似文献