The Square Circle

This article shows that there are square circles (or equivalently, round squares) in the sense that there are mathematical objects that are at the same time both perfectly circular and perfectly square. The philosophical significance of this is discussed, especially in view of philosophy's widespread use of “square circle” as a typical example of an impossibility. In particular, the focus is on what the existence of square circles means for the possibility of conceptual analysis, and more generally what we can learn about the nature of non‐formal concepts and their use in philosophy.     

A first-principles study of the formation of θ′′ phase in Al–Cu alloys

The θ′′-Al₃Cu phase plays an important role in the precipitation process of Al–Cu alloys. This phase has a sandwich structure—every two {200}_Cu layers are separated by three {200}_Al layers. To analyse the formation mechanism of this structure, the elastic strain energy of the {200}_Cu and {200}_Al layers, and the chemical bonding energy that reflects the interaction between the electrons in Cu and neighbouring Al atoms are calculated and analysed by first-principles calculations, projected density of states and Bader analysis. Our computation results reveal that this sandwich structure is energetically preferred in the competition of elastic strain and chemical bonding energies. To minimise the elastic strain energy of {200}_Al and {200}_Cu layers, the {200}_Cu layers prefer being apart from each other, whereas the chemical bonding energy favours the opposite arrangement because the intermetallic bond between Al and Cu atoms may form through p-d hybridization.     

No need for an intention to deceive? Challenging the traditional definition of lying

According to the traditional definition of lying, somebody lies if he or she makes a believed-false statement with the intention to deceive. The traditional definition has recently been challenged by non-deceptionists who use bald-faced lies to underpin their view that the intention to deceive is no necessary condition for lying. We conducted two experiments to test whether their assertions are true. First, we presented one of five scenarios that consisted of three different kinds of lies (consistent bald-faced lies, conflicting bald-faced lies, and indifferent lies). Then we asked participants to judge whether the scenario at hand was a lie, whether the speaker intended to deceive somebody, and how they would judge the behavior in terms of morality. As expected, our results indicate that the intention to deceive is not a necessary condition for lying. Participants rated indifferent lies to be lies and judged that no intention to deceive was involved in these cases. In addition, all bald-faced lies were evaluated as lies. However, participants widely ascribed an intention to deceive to bald-faced lies, which thus might not apply as counterexamples against the traditional definition of lying. Besides, lies are judged as morally wrong regardless of an intention to deceive.     

我对卒中单元的体会

卒中单元作为卒中治疗的最佳模式,逐渐被临床医生所接受,就卒中单元的概念、特点及我国卒中的现状等多数人所关心的问题进行了分析和探讨,以助于更好的理解。     

中-英双语语义通达机制的启动效应实验

采用不同加工水平的词汇判断任务,考察了启动刺激对目标刺激的启动效应,来探讨中英双语的语义通达机制。被试为大学生38名。结果发现：当启动刺激（英）和目标刺激（英）之间存在语义联想关系,得到了显著的启动效应（实验一）;当启动刺激（中）和目标刺激（英）之间存在语义联想关系,也得到了显著的跨语言启动效应（实验二）;当启动刺激（中）的翻译对等词和目标刺激（英）之间存在语音相同或相近关系时,采用基于语音的词汇判断任务,也得到了显著的跨语言启动效应。这一结果表明,对于中英双语者来说,第二语言的词汇表征既直接通达语义概念表征,又可以借助第一语言的词汇表征为中介再通达语义概念表征。     

文本阅读中概念提取的研究进展

文章对文本阅读中概念提取的研究进行了系统的介绍,虽然研究者得出了不同的结论,但都力图揭示文本阅读中概念提取的信息加工机制。文章在此基础上对影响文本阅读中概念提取的因素进行初步分析．发现文本类型、文本中心确定方式和抑制是主要因素。其中,文本中心确定方式是最主要的影响因素。     

不熟练汉英双语学习者第二语言词汇和概念表征的特点

本研究采用翻译识别任务探查了不同熟练程度的汉英双语儿童的词汇和概念表征的特点。被试为从一年级开始学习英语的小学三、五年级和初中一年级儿童共50名,结果发现．各组被试在进行翻译识别时．反应错误率随着熟练程度的提高逐渐降低,且各组被试都产生了显著的正字法干扰效应和语义干扰效应。这一结果表明,不熟练的汉英双语儿童可以通过词汇联系和概念联系加工第二语言中的词。     

幼儿说谎认知的年龄特征及其与心理理论水平的关系

研究探讨了3～4岁幼儿说谎认知的年龄特征,并在此基础上考察了说谎的概念理解水平与道德评价之问的关系,及说谎认知与心理理论水平的关系。结果表明：3岁和4岁幼儿在说谎和说真话概念的判断上年龄差异显著,在对说谎的道德评价上,年龄差异不显著;幼儿心理理论与说谎概念的相关显著,4岁组的心理理论与道德评价的相关显著。     

Why We Do What We Do When We Teach Pastoral Theology at United Theological College (UTC), Sydney

This paper seeks to reflect in a narrative way on the pedagogical processes involved in teaching pastoral theology at United Theological College, Sydney. The paper recognizes that the process of learning pastoral theology is a significant part of the content learned in pastoral theology. The learning process in pastoral theology also contributes to (trans)formational learning in those being formed for ministry. The paper seeks to contribute to the community of pastoral theologians by reflecting on the experience of teaching within a particular school.     

Symbolic consumption in teenagers' clothing choices

The importance of the symbolic properties of goods has been explored in depth among adult consumers, but there has been less attention given to the symbolic consumption of young people. This study explores the subject of symbolic consumption with specific reference to clothing in the teenage market. Thirty‐eight young people were interviewed, and age, sex and social position variations were considered. The results of this study suggest that conspicuous consumption is relevant for young people, and that they are a group which is adept at reading the signals represented in clothing choices. The authors found that the clothes choices made by young people are closely bound to their self‐concept, and are used both as a means of self‐expression and as a way of judging the people and situations they face. Evidence was also found that clothing has a function in role fulfilment, making the wearer more confident and capable. Overall, clothing can be viewed as an essential social tool in the lives of teenagers. Copyright © 2004 Henry Stewart Publications Ltd.