A method for calibrating the spatial coordinates of a visual display to high accuracy

High-resolution CRT displays are subject togeometric distortion: lines that are straight in the internal coordinates of the graphics software and hardware are curved when projected onto a plane in the observer’s line of sight. As the available resolution of CRT screens increases, it becomes more difficult to measure and correct for this distortion. We present a simple, highly accurate method for determining the mapping between internal coordinates and the viewing plane. It requires that an observer, using a calibration program, adjust triples of displayed points until they are collinear. A metal straightedge placed between the observer and the screen aids in this judgment. We describe the calibration of an IBM Enhanced Graphics Display in high-resolution mode (350 × 640 pixels), and illustrate how to use the estimated mapping to choose internal coordinates to draw undistorted figures that are accurate to within 0.5 pixel. The method can be used to assess or to correct the accuracy of visual displays. The method is relevant to experiments in spatial vision, spatial perception, perception of dot patterns, and any application in which geometrically accurate stimuli are required.     

The effects of narrative context on French verbal inflections: A developmental perspective

This experiment examines how narrative context affects French subjects' selection of past imperfective (imparfait) vs. perfective inflections with different predicate types. Adults and 10-year-old children were asked to inflect verbs presented in their written infinitive form in two conditions: (a) in isolated sentences; (b) embedded in the beginning, middle, or end of narratives. Regardless of conditions, the adults rarely used theimparfait with punctual resultative predicates. In both conditions, the frequency ofimparfait was high with durative predicates, particularly with aresultative ones, but it varied with position in the narratives, being highest at the beginning and lowest at the end. Although the children also used the imparfait frequently with durative predicates, they overgeneralized it to punctual resultative ones, regardless of conditions and of positions. These results show that adult uses of the imperfective/perfective distinction are determined by both predicate properties and grounding in narrative context. The children are less sensitive to some predicate properties than the adults and they do not differentiate imperfective/perfective aspect consistently as a function of discourse context.     

Induction of combination rules in two-dimensional function learning

Previous studies have typically found that when people learn to combine two dimensions of a stimulus to select a response, they learn additive combination rules more easily than nonadditive (e.g., multiplicative) ones. The present experiments demonstrate that in some situations people can learn multiplicative rules more easily than other (e.g., additive) rules. Subjects learned to produce specified response durations when presented with stimulus lines varying in length and angle of orientation. When stimuliand correct responses were related by a multiplicative combination of power functions, learning was relatively easy (Experiment 1). In contrast, systematic response biases occurred during the early phases of learning an additive combination of linear functions (Experiment 2) and a more complex (nonadditive and nonmultiplicative) combination of linear functions (Experiment3), suggesting that people have a tendency to induce a multiplicative combination of power functions. However, the initial biases decreased with practice. These results are explained in terms of a revised adaptive regression model of function learning originally proposed by Koh and Meyer (1991). Differences between the present results and previous results in the literature are discussed.     

高级职业经理人胜任特质评定探索

为了方便企业甄选所需要的高级管理人才,本文就“高级职业经理人胜任特质评定量表”的编制过程及其量表的结构分析做一报告。该量表分为认知基质、组织协调、领导力、个性倾向和自我调节五个纬度和一个测谎的分量表。本研究立足于中国本土文化,采用小组中心访谈和多种统计分析技术对中国的高级职业经理人的胜任特质进行测评,结果显示总量表和各纬度上的项目具有较高的同质性信度和结构效度,具有较好的鉴别力。     

"气":一种古老的刚美意蕴

“刚美”是张玉能先生近几年提出的一个美学范畴。本文对中国古典美学范畴“气”的历史渊流、审美特质等进行了比较详细的探讨和总结,指出了自从“气”取得美学上的主体意义之始,就已经显示出一种标举阳刚之美的审美倾向,或者说,阳刚就成为“气”范畴的美学特征;从而证明了“气”范畴充满了刚美的特质,具有丰富的刚美意蕴,因此它属于刚美范畴。     

Sentiments d’efficacité personnelle et dynamique du projet professionnel

The present study explored the relations of emotional self-efficacy, career indecision and motivation in a sample of 200 French university students. Results from standard multiple regression analyses showed that emotional self-efficacy appeared the best predictor of intrinsic motivation toward education. The three dimensions of career indecision, as measured by CDDQ, do not revealed good predictors of intrinsic motivation. Concerning amotivation, inconsistent information (due to unreliable information, internal and external conflicts) is the best predictor of amotivation. Emotional self-efficacy also explains amotivation. The theoretical and practical implications of these findings are discussed.     

Neural functions of calcineurin in synaptic plasticity and memory

Major brain functions depend on neuronal processes that favor the plasticity of neuronal circuits while at the same time maintaining their stability. The mechanisms that regulate brain plasticity are complex and engage multiple cascades of molecular components that modulate synaptic efficacy. Protein kinases (PKs) and phosphatases (PPs) are among the most important of these components that act as positive and negative regulators of neuronal signaling and plasticity, respectively. In these cascades, the PP protein phosphatase 2B or calcineurin (CaN) is of particular interest because it is the only Ca(2+)-activated PP in the brain and a major regulator of key proteins essential for synaptic transmission and neuronal excitability. This review describes the primary properties of CaN and illustrates its functions and modes of action by focusing on several representative targets, in particular glutamate receptors, striatal enriched protein phosphatase (STEP), and neuromodulin (GAP43), and their functional significance for synaptic plasticity and memory.     

普通高校大学生综合国防素质的量表编制

本研究通过初始问卷编制、项目分析、探索性因素分析和验证性因素分析等程序,编制普通高校大学生综合国防素质量表,并进行了相关实证测量。结果显示,量表有8个维度共35个题项。量表的α系数和重测信度均符合心理测量学指标要求,具有良好的结构效度、聚敛区分效度与校标关联效度,可用于大学生综合国防素质的测量。测量结果发现,大学生综合国防素质总体处于中等偏上水平,且存在显著的性别差异与年级差异。     

《管子》对《淮南子》的影响

《管子》对《淮南子》的影响,体现在文本和思想两个方面.《淮南子》中,既有对《管子》文本的袭用,也有对《管子》思想的继承.这与汉初的社会思潮和该书的编撰意图有关,也与淮南王刘安门下聚集了一部分来自齐地的学者有直接关系.     

个人特质水平及个人-项目距离与反应时的关系

为验证展开模型下个人-项目距离和特质水平与反应时间的关系,采用E-PRIME软件开发了艾森克人格问卷的测试程序,并选取237名年龄在18~26岁的大学生和研究生自愿者参加该项测试。采用拓广等级展开模型对反应数据进行分析,并计算个人-项目距离与反应时对数的相关以及反应时对特质水平的多项式回归。结果显示,个人-项目距离与反应时对数只在一些项目上存在显著的相关,反应时对特质水平的回归方程也只在部分项目上存在显著性,在全量表上回归方程并不显著,反应时对数化之后,回归显著的项目数明显更多。因此,未来将反应时合并到IRT模型中的研究需要对反应时进行对数化并在项目水平上构建它与特质参数或其函数之间的关系。