Globalisation and inequality in South Africa: modelling the labour market transmission

This paper draws on a Computable General Equilibrium (CGE) model to evaluate the extent and causes of income inequality in South Africa after 1994. In doing so the paper extends the CGE-modelling approach in South Africa by incorporating dynamics into the comparative static CGE model used by the Industrial Development Corporation of South Africa. The 1995 Social Accounting Matrix for South Africa prepared by DRI-WEFA SA (Pty) Ltd. (now Global Insight Southern Africa) is used as database. The results from the paper is consistent with evidence from recent household and firm-level surveys in South Africa and supports labour market reform coupled with social security as instruments to achieve more equitable outcomes from globalisation.     

Implications of behavioral consistency in dynamic choice under uncertainty

This paper considers two fundamental aspects of the analysis of dynamic choices under risk: the issue of the dynamic consistency of the strategies of a non EU maximizer, and the issue that an individual whose preferences are nonlinear in probabilities may choose a strategy which is in some appropriate sense dominated by other strategies. A proposed way of dealing with these problems, due to Karni and Safra and called behavioral consistency, is described. The implications of this notion of behavioral consistency are explored, and it is shown that while the Karni and Safra approach obtains dynamically consistent behavior under nonlinear preferences, it may imply the choice of dominated strategies even in very simple decision trees.     

电视剧中圆形人物的简约化与扁平人物的精致化

作者针对电视剧人物塑造上的特点，通过丰富的材料、精细的评析与有说服力的论证，提出了电视剧在人物塑造上的鲜明走向，即圆形人物简约化与扁平人物精致化，为关于电视剧人物塑造特点的学术研究提供一个有力前提。同时，分析了大众文化对电视剧人物塑造的作用与由此而来的艺术得失。     

工资决定的行为与制度分析

新古典工资理论很难解释现实的工资差异等问题,新制度经济学把劳动合同的不完全性和劳动市场竞争的不完全性引入,从劳动市场不完全性角度来解释了这些问题。后来的行为和实验经济学研究则给出了不同的证据和结论。这些研究发现,劳动市场参与人是满足行为偏好的,具有公平和互惠动机,公平规范等非正式制度在实际的工资决定中起着重要作用。基于新制度经济学的制度设计,必须和基于行为与实验经济学的规范形成互补,才能真正发挥劳动市场的资源配置作用。     

基于VRML的多媒体课件制作

在介绍虚拟现实建模语言VRML的基础上，论述了基于VRML的多媒体课件优势，着重讨论了基于VRML的多媒体课件的制作方法，最后介绍了VRML多媒体课件的播放．     

非零偏移距DSR叠前深度偏移

提出了非零偏移距域双平方根算子的叠前深度偏移法,该方法根据不同速度模型,通过精确正演模型数据,利用双平方根方程进行偏移,实现了偏移成像和动力学特性研究。研究认为：采用中点-半偏移距域的双平方根算子的叠前深度偏移方法,能够适应横向速度变化,具有精度高、无频散、背景噪声弱、耗时短等优点。对岩性油气藏勘探有重要意义。     

Understanding contextual effects on externalizing behaviors in children in out-of-home care: Influence of workers and foster families

The expression of externalizing behaviors of children in-care can be influenced by a multitude of factors. The current study examined the simultaneous levels of influence of workers and foster families on children's externalizing behaviors in those receiving out-of-home care. A cross-classified multilevel model was used to partition variance in children in-care's externalizing scores into worker, foster family and child-specific levels of influence. The extent to which processes are explained by worker and foster-family level predictors was examined. Assessment and Action Record (AAR) data from the Ontario Looking after Children (OnLAC) project were analyzed. The sample included data from 1063 children between 10 and 17 years of age (M age = 13 years, 6 months, SD = 2.08 years). While individual differences in children's externalizing behaviors were primarily attributable to child-specific effects (72%), 10% and 18% of the variance can be explained by worker and foster family influences respectively. Worker education accounted for substantial differences seen between workers where more difficult children were monitored by workers with less educational attainment. Furthermore, foster-family level predictors also explained variance in children's externalizing behaviors. Relative to children in foster care, those in kinship care displayed significantly lower levels of problem behaviors while children in group care displayed significantly higher levels. Higher levels of parental negativity within the foster family and the experience of more differential parental negativity relative to siblings were significantly associated with more externalizing behaviors. Lastly, children who were more satisfied with their placement displayed significantly lower levels of problematic behaviors. These results suggest that children in-care can be conceptualized within a multilevel framework.     

An Empirical Study of the Toxic Capsule Crisis in China: Risk Perceptions and Behavioral Responses

The outbreak of the toxic capsule crisis during April 2012 aroused widespread public concern about the risk of chromium‐contaminated capsules and drug safety in China. In this article, we develop a conceptual model to investigate risk perceptions of the pharmaceutical drug capsules and behavioral responses to the toxic capsule crisis and the relationship between associated factors and these two variables. An online survey was conducted to test the model, including questions on the measures of perceived efficacy of the countermeasures, trust in the State FDA (Food and Drug Administration), trust in the pharmaceutical companies, trust in the pharmaceutical capsule producers, risk perception, concern, need for information, information seeking, and risk avoidance. In general, participants reported higher levels of risk perception, concern, and risk avoidance, and lower levels of trust in the three different stakeholders. The results from the structural equation modeling procedure suggest that perceived efficacy of the countermeasures is a predictor of each of the three trust variables; however, only trust in the State FDA has a dampening impact on risk perception. Both risk perception and information seeking are significant determinants of risk avoidance. Risk perception is also positively related to concern. Information seeking is positively related to both concern and need for information. The theoretical and policy implications are also discussed.     

基于多层架构的B2C电子商务系统的建模研究

本文给出了一种适合中小型企业快速建立自己的电子商务系统的解决方案,该解决方案能够满足企业不断扩展和变化的需求。文中以软件工程领域的新思想、新方法和面向对象思想为指导,以开源新技术为基础,以UML作为建模语言,并结合电子商务的体系结构和特点,分析研究了构建B2C电子商务系统的多层架构方案。此方案给出一种5层设计模式,使视图层、控制层、模型层、持久层、数据库层相分离,便于系统的扩展、维护和移植,目标是使系统实现高内聚低耦合。     

面板研究中的多层线性模型应用述评

面板研究是纵贯面研究领域的一种重要类型,近年来,国外运用多层线性模型在面板研究领域取得了一系列理论和应用上的进展。通过对面板研究的界定,对面板研究的发展情况、数据特征进行简要介绍,在与传统统计分析方法进行比较的基础上,重点阐述多层线性模型在面板研究领域的独特优势及其一般建模方法和过程,分为线性发展模型、曲线发展模型和三层发展模型进行解读,并结合多个实例分析不同类别的多层线性模型在面板研究中的应用情况,指出现存的面板研究中多层线性模型应用需要注意的时间变量设定及中心化、固定效应和随机效应的选择及样本量等问题,同时进一步指出多层线性模型在未来面板研究领域存在的调节作用和中介作用、结构方程模型的选择应用等发展方向。