Rotational and translational components of motion parallax: observers' sensitivity and implications for three-dimensional computer graphics

The motion of objects during motion parallax can be decomposed into 2 observer-relative components: translation and rotation. The depth ratio of objects in the visual field is specified by the inverse ratio of their angular displacement (from translation) or equivalently by the inverse ratio of their rotations. Despite the equal mathematical status of these 2 information sources, it was predicted that observers would be far more sensitive to the translational than rotational component. Such a differential sensitivity is implicitly assumed by the computer graphics technique billboarding, in which 3-dimensional (3-D) objects are drawn as planar forms (i.e., billboards) maintained normal to the line of sight. In 3 experiments, observers were found to be consistently less sensitive to rotational anomalies. The implications of these findings for kinetic depth effect displays and billboarding techniques are discussed.     

众教领袖会温沙共画宏图护寰球──记世界宗教与环境保护首脑会议

众教领袖会温沙共画宏图护寰球──记世界宗教与环境保护首脑会议谢宗信,张继禹,曾传辉在１９９５年中国道教的对外交往中,有一起具有非同寻常意义的事件。那就是作为我国古老的民族性宗教──道教,第一次独立地派出它的代表,走出国门,出席世界宗教与环境保护首脑会...     

Quantitative measurement of observed workload in the analysis of aircrew performance

A methodology for the quantitative evaluation of observed workload was proposed. The model was designed to provide point estimations of observed workload at any time during the performance of a set of tasks. The model was also designed to provide information about the task-scheduling strategies used to complete a set of tasks. The proposed model was then tested with data from a full mission flight simulation. The model predictions correlated significantly with expert ratings of workload management made during the flight simulation. The model was also able to distinguish between low- and high-performing aircrews when performance was based on the number of errors made during flight simulations.     

Five points and a lament about Range and Cotton's "Reports of assent and permission in research with children: illustrations and suggestions

This comment responds to an article by Range and Cotton (1995) on reporting of parental permission and child assent procedures in published articles for 4 psychology journals. Issue is taken with the assumptions, methodology, interpretations, and implications of listing researchers in the Range and Cotton article. There is no evidence researchers failed in their ethical obligations or that children were put at risk. Reporting permission/assent in publications is not an ethical requirement. Listing researchers as "failing" to do something not part of an ethical code is lamentable. Too many unfortunate implications and problems can be derived from Range and Cotton's analysis and conclusions.     

Deceived versus nondeceived participants' perceptions of scientific and applied psychology

Research examining the possible effects of deceptive research participation on participants' perceptions of psychology has yielded equivocal results. The present study's goal was to clarify the possible effects of participation in mildly deceptive research on participants' impressions of scientific and applied psychology. Participants (N = 112) were randomly assigned to one of six experimental conditions: active groups receiving negative, positive, or no feedback, or passive groups receiving negative, positive, or no feedback. Following participation, participants completed measures of impressions of psychotherapy and psychotherapists, researchers, and instructors. The manipulation did not affect attitudes toward psychology on any of the dependent measures, although gender effects resulted on one measure. Participants in general reported very positive attitudes toward the science and practice of psychology. Recommendations are offered for future research on the effects of more extensive deceptions.     

重视非语言行为在护理工作中的应用

重视非语言行为在护理工作中的应用刘薇群,赵志霞,薛卫斌（第四军医大学西京医院）１引言目前,在许多医院不仅存在护患比例失调问题。同时随着医学科学的发展,新的诊疗手段不断增加,护理治疗量随之增加．护士在日常工作中与每一位病人专门地进行语言交流机会减少。然...     

教育心理学的发展与展望

教育心理学的发展与展望程刚,曾捷英（湖北大学教育管理系）１教育心理学的过去１９１３年被认为教育心理学发展里程碑的桑代克三卷本《教育心理学》出版。教育心理学在美国,在世界上正式诞生。纵观５０年代以前的教育心理学,其发展具有以下特点。研究对象和内容庞杂,...     

动词语义和句子语法对代词加工的影响

考察了动词语义和句子语法对代词加工的影响．结果表明,动词语义是影响代词理解的一个因素;相同语法功能假设尚需进一步验证,研究者还提出代词理解受社会文化因素影响的假设。     

学前儿童对汉语副词的理解和运用

在汉语中,副词是一种比较独特的词类,它没有具体形象的物体可作为理解支柱,因而儿童对它的掌握较晚。在各类副词中,５、６岁儿童对范围副词的理解最佳,时间副词次之,程度副词最差。三者的差异均有非常显著性意义。即使在每一类副词中,由于儿童概念发展的不均衡性,掌握的顺序也有先后。     

哈特曼人格理论概述

哈特曼在研究睡眠与梦的基础上,提出了心理疆域的概念,认为心理疆域代表着人格的一个维度．本文全面介绍了哈氏关于睡眠与梦的研究成果及其心理疆域概念和理论,并对其理论与实践意义作了简要的评价．