隐喻、转喻机制下的英语一词多义现象

一词多义是一种重要的语言现象,主要通过隐喻和转喻来实现。隐喻和转喻不仅是修辞手段,而且是两种重要的词义延伸的方式。隐喻以事物间的相似性为基础由源域向目的域映射,转喻以相邻性和突显性为基础在同一个域内实现事物间的映射。隐喻和转喻并不是截然对立的。     

几类特殊矩阵的可逆性及其逆矩阵

对几类特殊矩阵的逆矩阵问题进行了研究,讨论了它们可逆的条件,分析了这些矩阵与其逆矩阵之间的关系,并给出了其逆矩阵的特征或求逆矩阵的公式．     

运用思维导图,助力小学英语高效课堂

随着教学体制的改革,新课标对小学英语提出了更高的教学要求。与传统教学相比,小学英语教材的词汇量不断增加,单词是学生面对的主要问题。因此,教师要在小学英语教学中合理地运用思维导图,让学生学会利用思维导图学习英语,从而为后期学习更深层次的英语打下坚实的基础。     

Lipschitz强伪压缩映象不动点的Ishikawa迭代逼近

给出了一个新的具误差的Ishikawa迭代序列强收敛到T的惟一不动点;并给出当T是Lipschitz强增生算子时,一个新的具误差的Ishikawa迭代序列强收敛到非线性方程Tx=f的解.     

谱约束下矩阵的最佳逼近

如何求出以给定的λi为特征值、以已知的qi为λi对应特征向量的n阶方阵的集合是矩阵分析和系统理论的重要问题.利用Kronecker积及矩阵的广义逆作为工具对这一问题做出回答,并给出了在相应的解集合中与给定矩阵的最佳逼近解的表达式.     

伴随矩阵的原矩阵

给出了复数域上一个n阶矩阵存在原矩阵的一个充要条件,讨论了伴随矩阵的原矩阵的存在性。     

R(L)型诱导空间及连通性

用R(L)-值下半连续函数引入了R(L)型诱导空间的概念．讨论了它的一些基本性质．证明了R(L)型诱导空间保持笛卡尔积；(L^x，δ)是连通空间当且仅当其R(L)型诱导空间是连通空间，给出了LF拓扑空间集与R(L)型诱导空间集之间建立的映射和生成映射ω的可交换性．     

Fostering Understanding by Structural Alignment as a Route to Analogical Learning

The purpose of this study was to extend previous research on the conditions that may promote understanding and abstraction via structural alignment, that is, through a comparison between two partially understood situations. Structural alignment is a route to analogical reasoning which differs from the typical route where an analogy is made by eliciting an unknown situation from a very familiar one. Ninety-nine eighth graders were presented with two pairs of scenarios; the first depicting two phenomena of heat flow and the second, two phenomena of the changing state of matter. Participants were randomly assigned to five different conditions which varied in the degree to which they required a comparisonbetween the phenomena in the scenario pairs. For each pair of scenarios, participants were asked to describe the differences between the two phenomena, explain what happens in the phenomena, rate the similarity between the two, and justify the ratings. Results show that analogical reasoning was promoted more in the condition where participants were asked to jointly interpret the phenomena depicted in the scenarios. For both pairs of scenarios, students in this condition reached a deeper understanding; they were more able to identify alignable differences between the phenomena, and recognize the abstract and general higher-order relational structure implied by the perceptually different situations.     

模和拟共形映射

研究了模和拟共形映射，得到了一个同胚为拟共形映射的几个条件。     

七种常见压缩映射的关系

对常见的七种压缩映射定义进行比较 ,对其蕴含关系进行证明 ,对其不具有蕴含关系举反例给予说明。