Frames of reference in mobile augmented reality displays

In 3 experiments, the authors investigated spatial updating in augmented reality environments. Participants learned locations of virtual objects on the physical floor. They were turned to appropriate facing directions while blindfolded before making pointing judgments (e.g., "Imagine you are facing X. Point to Y"). Experiments manipulated the angular difference between the learning heading and the imagined heading and between the actual heading and the imagined heading. The effect of actual-imagined on pointing latency was observed for naive users but not for users with brief training or instructions concerning the fact that objects can move with body movements. The results indicated that naive users used an environment-stabilized reference frame to access information arrays, but with experience and instruction the nature of the representation changed from an environment stabilized to a body stabilized reference frame.     

Study of γ/γ′ interfacial width in a nickel-based superalloy by scanning transmission electron microscopy

The γ/γ′ interfaces are thought to play an important role in determining the mechanical properties in single-crystal nickel-based superalloys. In this article, interfacial width in DD6, one second-generation single-crystal superalloy containing 2 wt% Re, has been studied by means of scanning transmission electron microscopy. From an atomic resolution high angle annular dark field image, both compositional interfaces and order–disorder interfaces are studied, and it is first found that the interfacial width of chemical composition is same with that between the ordered and disordered phases.     

Unconsciously learning task-irrelevant perceptual sequences

We demonstrated unconscious learning of task-irrelevant perceptual regularities in a Serial Reaction Time (SRT) task in both visual and auditory domains. Participants were required to respond to different letters (‘F’ or ‘J’, experiment 1) or syllables (‘can’ or ‘you’, experiment 2) which occurred in random order. Unbeknownst to participants, the color (red, green, blue or yellow) of the two letters or the tone (1–4) of the syllables varied according to certain rules. Reaction times indicated that people indeed learnt both the color and tonal regularities indicating that task-irrelevant sequence structure can be learned perceptually. In a subsequent prediction test of knowledge of the color or tonal cues using subjective measures, we showed that people could acquire task irrelevant knowledge unconsciously.     

Web2.0环境中顾客参与的实现型快乐感形成机制

随着以用户间交互为特征的Web 2.0理念的深入发展,顾客期望借助互联网参与到价值的生产与创造过程中,以期通过自我潜能发挥和自我价值展示寻求获得一种有别于享乐型快乐感的实现型快乐感.以往顾客参与研究大多关注其经济利益、如何管理、影响因素、获得的实际利益,而对于顾客参与过程中的心理机制和参与后的心理收获研究不多.本研究以互联网为背景,从顾客视角出发,科学采用实验、实证等多种方法,并尝试采用生理仪器(如多导仪、脑电核磁共振仪等)采集顾客行为和生理的客观数据,利用自我决定理论对顾客参与过程的心理反应和参与后的心理收获进行系统探讨,构建顾客参与过程的心理动态模型.     

The Effects of Self-Esteem,Task Label,and Performance Feedback on Goal Setting,Certainty, and Attribution

An identical task was labeled as either difficult or easy. Bogus performance feedback was given to each subject at random after the first work period. Subjects were divided into high or low self-esteem groups based on a median split in their scores on the self-esteem measure. The results showed that subjects set lower goals in the difficult condition than they did in the easy condition in the first period; however, no difference was found in the second period. Subjects with high self-esteem had higher certainty than those with low self-esteem in the second period. Subjects in the positive feedback group made higher ability and effort attributions than those in the negative feedback group.     

书法练习对儿童情绪及其调节策略发展的促进作用

本研究采用纵向设计,对170名儿童（实验组：101人;对照组：69人）进行为期两学年的追踪,旨在探讨书法练习对儿童情绪状态及认知性情绪调节策略发展的影响。研究发现,1）以前测成绩为协变量,后测时实验组的积极情绪显著高于对照组;2）实验组在“积极重新关注”、“计划”两维度上的情绪调节策略得分增量（后测-前测）显著高于对照组。结果表明,书法练习对儿童情绪及其调节策略发展具有促进作用。     

表达形式影响自我积极偏向的表现:来自P200的证据

该研究运用事件相关电位技术,采用肯定和否定的表达方式呈现自我参照任务,探讨不同表达方式对自我积极偏向效应的影响。实验一中,行为数据显示,自我积极偏向效应表现的并不完整;ERP数据显示,P200波幅的结果与行为数据结果相一致。实验二中,行为数据显示,自我积极偏向效应表现得完整;ERP数据显示,P200成分上并未产生任何实验效应。综合两个实验结果,证明了不同表达方式对自我积极偏向效应的表现存在影响。导致这种差异的根本原因可能在于两种表达方式造成的注意资源不同。     

Gender Differences in Coping Styles of Chinese Military Officers Undergoing Intensive Training

This study investigated gender differences in anxiety and coping styles under the stress of intense military training. We surveyed Chinese female (n = 470) and male (n = 379) military officers who were surveyed during the third month of a 10-month intensive training program. Results indicated that state and trait anxiety were highly correlated in both women and men. In general, female officers had higher levels of anxiety, greater negative coping tendencies, and less perceived self-efficacy than their male counterparts. When compared with the norm, both women and men had significantly more positive coping strategies. A hierarchical multiple regression analysis showed factors that influenced male and female state anxiety. Avoidance, which was chosen by women more often than men, in general was less useful for female officers. The most common positive coping style for female officers was problem solving, whereas for men it was help seeking. We suggested that even female officers with lower mental health levels than their male counterparts made active cognitive changes to their coping styles when undergoing intense military training.     

Absence Causation and a Liberal Theory of Causal Explanation

For the framework of event causation—i.e. the framework according to which causation is a relation between events—absences or omissions pose a problem. Absences, it is generally agreed, are not events; so, under the framework of event causation, they cannot be causally related. But, as a matter of fact, absences are often taken to be causes or effects. The problem of absence causation is thus how to make sense of causation that apparently involves absences as causes or effects. In an influential paper, Helen Beebee offers a partial solution to the problem by giving an account of causation by absence (i.e. causation in which absences are supposed to be causes). I argue that Beebee's account can be extended to cover causation of absence (i.e. causation in which absences are supposed to be effects) as well. More importantly, I argue that the extended Beebeeian account calls for a major modification to David Lewis's theory of causal explanation, usually taken as standard. Compared to the standard theory, the result of this modification, which I shall call ‘the liberal theory of causal explanation’, has, among other things, the advantage of being able to accommodate causal explanations in which the explananda are not given in terms of events.