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31.
先天易的数学基础初探——试论先天卦序与二进位制 总被引:4,自引:2,他引:2
本文从自然数及其记数法的基本慨念出发。辨析了与二进位制相关的几个容易混淆的概念,指出序数概念的引入在近代数学发展中有重要意义。作为邵雍数学学派的数学基础,先天易是数学史上第一个专门定义的序数体系,该序数体系在数学史上率先采用了二进位制记数法。先天易作为二进制序数体系这一事实在明清时期引起不同的反响,反对者认为它使易道沦落,大数学家汪莱则从P进制的角度论证它的优越性。本文最后还对近年来反对先天易与二进制有关的两种典型观点进行了剖析.指出其谬误所在。 相似文献
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The increased use of violence risk assessment tools in professional practice has sparked the development of best-practice guidelines for communicating about violence risk. The present study examined 166 pre-sentence reports, authored by clinicians and probation officers, to determine the extent to which they are consistent with those guidelines. We examined the frequency with which reports contained information about five topics: the presence of risk factors; the relevance of risk factors; scenarios of future violence; recommended management strategies; and summary risk judgments. Analyses revealed that the topics addressed most frequently in reports were the presence of risk factors and recommended management strategies, but none of the five topics was addressed consistently, completely, or clearly in reports. This was especially the case for probation reports. The findings highlight the need to improve practice through better implementation of guidelines for risk communication. Also needed is research on the extent to which information in risk communications is comprehended, accepted, and used by various stakeholder groups. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
34.
内隐关系评估程序(Implicit Relational Assessment Procedure, 简称IRAP)是基于关系结构理论直接测量社会认知、信念或态度的新内隐测量方法, 具备一定的可靠性和有效性, 并与其它相关测量方法的适用性存在一定差异。不同的理论模型为IRAP的不同效应提供了解释。IRAP最初应用于临床诊断性研究, 新近已扩展到自我、社会认知、群体和态度等研究领域。进一步验证不同形式IRAP的信效度、探究IRAP的心理机制及产生的心理效应、在不同领域发挥IRAP的方法优势等将是未来研究的重要方向。 相似文献
35.
The role of age on reactivity and memory for emotional pictures 总被引:1,自引:0,他引:1
The purpose of this study was to investigate subjects' reactivity to emotional pictures and their recollection of these pictures, and to examine these two factors as they relate to age. Adolescents and young adults were shown emotionally arousing scenic pictures for long (4-s) and very brief (50-ms) durations. Recognition of the pictures and recall and recognition of words presented along with the pictures were assessed both immediately after the presentation and six weeks later. The results showed that very negative pictures are retained better than neutral or even positive pictures, and that very negative pictures reduce memory for associated information. It was also found that adolescents show a somewhat lower reactivity to very negative pictures and a higher degree of retention of these pictures than adults. The results are discussed in relation to (a) habituation effects, (b) strategies that subjects might develop to block emotional involvement, and (c) the notion that watching violence might serve as a powerful prime to socially undesirable behaviour. 相似文献
36.
Corben LA Akhlaghi H Georgiou-Karistianis N Bradshaw JL Egan GF Storey E Churchyard AJ Delatycki MB 《Brain and cognition》2011,76(1):140-145
Friedreich ataxia (FRDA) is the most common of the genetically inherited ataxias. We recently demonstrated that people with FRDA have impairment in motor planning - most likely because of pathology affecting the cerebral cortex and/or cerebello-cortical projections. We used the Simon interference task to examine how effective 13 individuals with FRDA were at inhibiting inappropriate automatic responses associated with stimulus-response incompatibility in comparison with control participants. Participants had to respond to arrow targets according to two features which were either congruent or incongruent. We found that individuals with FRDA were differentially affected in reaction time to incongruent, compared with congruent stimuli, when compared with control participants. There was a significant negative correlation between age of onset and the incongruency effect, suggesting an impact of FRDA on the developmental unfolding of motor cognition, independent of the effect of disease duration. Future neuroimaging studies will be required to establish whether this dysfunction is due to cerebellar impairment disrupting cerebro-ponto-cerebello-thalamo-cerebral loops (and thus cortical function), direct primary cortical pathology, or a possible combination of the two. 相似文献
37.
International research has established that stalking is a prevalent problem with serious and often life-threatening consequences for victims. Stalking is also a unique form of violence due to its nature and diversity, making it difficult for criminal justice and health professionals to establish which perpetrators and victims have the greatest need for services and protection. Risk assessment is one way to address these problems but few tools exist. This article describes the development of the Guidelines for Stalking Assessment and Management (SAM), the first risk assessment instrument designed specifically for the stalking situation. Preliminary data are presented, indicating that the SAM has promise for use by professionals working with stalkers and their victims. Results indicated that interrater reliabilities for the SAM risk factors and total scores range from fair to good, and the structural reliability of the SAM is sound. Moreover, the SAM showed good concurrent validity when compared with two other measures of violence propensity: the Psychopathy Checklist Screening Version (PCL:SV) and the Violence Risk Appraisal Guide (VRAG). Limitations of the study are discussed, especially those related to the difficulties inherent in file-based research, and suggestions for future research are offered. 相似文献
38.
SVEN-ÅKE CHRISTIANSON 《Scandinavian journal of psychology》1987,28(1):83-87
A fine-grain analysis of autonomic responses are presented with the purpose of extending the conclusions from a previously published paper (Christianson & Nilsson, 1984) on emotional and memorial responses to traumatic visual stimuli. Control subjects were presented with a series of 18 slides of neutral faces, whereas the experimental subjects were presented with six slides of horrible facial injuries in positions 7–12, interspersed between six slides of neutral faces in the beginning, and six slides of neutral faces at the end of the series. The time course of heart rate (HR) and skin conductance (SC) during stimulus presentation was recorded. These data showed an initial pattern of increase in SC, but not in HR. This pattern was subsequently replaced by a combined increase in both SC and HR. The results are discrepant to previous work and are interpreted as effects of not informing the subjects about the gruesome slides to be presented. 相似文献
39.
The long-term effects of phonemic awareness training in kindergarten were evaluated by studying various aspects of reading, spelling, and oral phonological skills in school. In the kindergarten-part of the study 95 children divided into three experimental and two control groups took part. One year later 83 of them were identified and tested in school. The children who participated in the phonemic training program seemed to have benefited from it to some extent. At least they improved their scores on phonemic synthesis tests in school. Some children in the middle and high range of pretest performance seem to have avoided a risk for reading failure to a greater extent than the corresponding children in the control groups. It is suggested that phonemic training contributes to the development of accurate concepts of reading in the preschool child and makes the child less confused when confronted with formal reading instruction in school. Great variances, ceiling effects, and group heterogeneity created many difficulties in evaluating the training effects. The various methodological problems implied in evaluation research with nonequivalent control group design were analysed and illustrated with data from the present research. 相似文献
40.
Vitulli WF Kaiser GA Maranto DL Blake SE Storey TM McPherson KP Luper SL 《Perceptual and motor skills》1999,88(1):281-291
Acetaminophen (N-Acetyl-p-aminophenol) was administered intraperitoneally to 15 Sprague-Dawley rats partitioned into 3 studies (5 rats per study) using a within subjects, repeated-measures reversal design. Behavioral thermoregulation was assessed in a cold Skinner Box using 5-sec. exposures of microwave radiation [Specific Absorption Rate = 0.34 Watts/kg/(mW/cm2)] as reinforcing stimuli under a fixed-interval 2-min. schedule of positive reinforcement. Doses of 10, 20, 30, 40, and 50 mg/kg (in solutions of 1%, 2%, 3%, 4%, and 5%) acetaminophen showed stable rates of operant responding for heat compared with significant changes in rates for comparable doses of aspirin in a 1993 study by Vitulli, et al. Weight reductions and temperature increases varied significantly with before-session and after-session measures, respectively. 1994-95 biochemical data of Murphy, et al. from humans following aspirin or acetaminophen ingestion which affect thermoregulation and sleep patterns are discussed in conjunction with behavioral data from rats. 相似文献