有关复数域一些问题的研究

本文阐明了域和同构的概念,并证明了有序实数组、二维向量和二阶矩阵的同构关系,指出特殊的实数组、二维向量和二阶矩阵都可以定义复数域。     

Which notion of implication is the right one? From logical considerations to a didactic perspective

Implication is at the very heart of mathematical reasoning. As many authors have shown, pupils and students experience serious difficulties in using it in a suitable manner. In this paper, we support the thesis that these difficulties are closely related with the complexity of this notion. In order to study this complexity,we refer to Tarski's semantic truth theory,which contributes to clarifying the different aspects of implication: propositional connective, logically valid conditional, generalized conditional,inference rules. We will show that for this purpose, it is necessary to extend the classical definition of implication as a relation between propositions to a relation between open sentences with at least one free variable. This permits to become aware of the fact that, in some cases, the truth-value of a given mathematical statement is not constrained by the situation, contrary to the common standpoint that, in mathematics, a statement is either true or false. In the present paper, the didactic relevance of this theoretical stance will be illustrated by an analysis of two problematic situations and the presentation of some experimental results from our research on first-year university students' understanding of implication. This revised version was published online in August 2006 with corrections to the Cover Date.     

汉语下肢语义场的历史演变

汉语下肢语义场是词汇系统中典型的语义场之一 ,这一语义场的“能指”从古到今发生了比较显著的变化。本文拟对古汉语下肢语义场内各义位的使用及其历史演变情况作较为详尽地描写 ,在此基础上分析各语义子场内多元体存在的价值 ,探讨下肢语义场的演变特点及规律 ,探求下肢语义场演变的原因。     

语义单位的句法组合原理

有些符合语法规则的短语不能成立，究其根本原因在于语义。运用义素分析方法研究语义单位组合的规则是解释词语组合原理的科学方法。从目前分析的结果看，语义单位进行句法组合有三项重要的定律与一项规则，即：义位组合的语义成分不矛盾律，义位组合的语义成分条件关系律，义位组合的语义成分蕴含关系律，以及语义组合想象合理的规则。常规的义位组合必须遵守前三项定律中的其中之一，非常规的义位组合应该遵循语义组合想象合理规则。不违背句法组合原理的短语可以在语言中存在。     

《搜神记》同义变换修辞的语义分析

运用同义变换分析法,对《搜神记》同义变换修辞的语义特色进行个案研究,可知其主要特色是模糊同义,体现为模糊概念及模糊命题的同义变换两大类型。     

"有没有VP"与"VP没有"的比较研究

一种新句式叙述性“有没有VP”的出现,势必对普通话句式的格局产生一定的影响。它与普通话传统用语“VP没有”都是选择问句,表达的基本意义相近,使用时,人们往往把这两种形式看成是完全等同的。本文着眼于这两种句式的“微殊”,试从形成模式、问话期待、语义重心和回答方式、句式特点和变换方式上作一些探讨,以期更好地指导人们的言语实践。     

理论的深化与超越--评骆小所教授《艺术语言再探索》

《艺术语言再探索》一书更为科学地界定了艺术语言的含义,明确了艺术语言学的学科性质,更加全面而深刻地阐释了艺术语言的语义呈现规律,进一步完善了艺术语言学的学术体系,标志着艺术语言学的成熟。该书开阔了语言学研究的境界,拓展了语言研究的思维空间,为修辞学和语言学等相关学科研究的发展提供了重要的理论依据和方法论依据。     

The differential effects of prior knowledge on learning: A study of two consecutive courses in earth sciences

We studied the occurrence and nature of learningin a university first year Introduction toGeomorphology course, and its relations with priorknowledge taught in a prerequisite course, and withthe prior knowledge in the to be learned subjects. Tendimensions of knowledge were tapped before and afterthe course by conventional and cognitive structuremeasures that were derived by the concept mappingmethodology. The fine-grain analysis of learningoutcomes yielded the following results: (a) studentsacquired only a small portion of the content in thecourse Introduction to Geomorphology, (b) the priorgeological and geomorphological knowledge did notaffect the learning of the new geomorphologicalcontents, (c) the minor effects appeared within ratherthan across knowledge dimensions, and they affectedmainly the learning of smaller knowledge units, and(d) concept definition cannot be considereda valid probe of knowledge. The differential effects of prior knowledge question thecentral, global and undifferentiated role that schematheories ascribe to prior knowledge in futurelearning. They call for greater reference to theexposed dimensions of knowledge by suggestingadditional factors to be considered in the sequencingof courses, as well as to the acquisition of complexknowledge with partial meaning of the basic knowledgeunits, and the use of new cognitive structure probesof knowledge.     

New Media/Internet Research Topics of the Association of Internet Researchers

This study summarizes prior reviews of new media and Internet research, and the growth of the term Internet in academic publications and online newsgroups. It then uses semantic network analysis to summarize the interests and concepts of an interdisciplinary group of Internet researchers, as represented by session titles and paper titles and abstracts from the 2003 and 2004 Association of Internet Researchers conferences. In both years, the most frequent words appearing in the paper abstracts included Internet, online, community, social, technology, and research. The 2003 papers emphasized topics such as the social analysis/research of online/Internet communication, community, and information, with particular coverage of access, individuals, groups, digital media, culture; role and process in e-organizations; and world development. The 2004 papers emphasized topics such as access; news and social issues; the role of individuals in communities; user-based studies; usage data; and blogs, women, and search policy, among others.     

从一句话看隐喻的语义识别

"我是回民,我不会吃你的",这句话中蕴涵着深刻的隐喻意义。本文从隐喻意义的识别和推断,对隐喻理解过程中意义的模糊性和民族性进行分析。