m尺度正交双向小波的构造

将2尺度双向加细函数和双向小波的研究以及相关性质推广到m尺度.同时,给出了双向加细函数和双向小波在对称与反对称时应满足的条件.最后研究了如何利用正交尺度函数和对应的正交小波.构造正交双向小波,并给出了具体算例.     

求解微分方程的二代小波配点法

采用Lagrange插值细分方法构造了紧支撑双正交小波的尺度函数.以此尺度函数为基函数,考虑区间内外基函数的不同,选择不同的配点,形成了区间上求解微分方程的小波配点法.由于二代小波自身的特性使该方法结构简单,计算复杂度小.对对流占优方程第一边值问题,当扩散系数很小时用本文方法也能得到较精确解,表明了该方法的有效性.     

B样条正交小波的构造

基于Mallat多尺度分析理论,用Daubechies的正交小波构造方法,构造出任意阶基数B样条规范小波,并给出了相应的小波函数,尺度函数,正交象波器H和G的时频响应表达式,这类小波产生的小波基适用于一维和二维信号分解与重建过程中的Mallat快速算法。     

构建三元双正交小波的矩阵扩充方法

讨论三元双正交小波滤波器构造的矩阵扩充问题.运用多小波提升思想与矩阵多相分解方法,给出了由插值尺度函数构造三元双正交小波滤波器一般公式.刻画了三元双正交小波包的性质,得到了2个双正交公式.     

基于二维康托尔二元群的小波变换

根据经典的康托尔集构造了二维康托尔集,将一维康托尔二元群上的小波变换推广到二维康托尔二元群上.利用一维多分辨分析的张量积构造出二维可分离多分辨分析,提出相应的尺度函数和小波函数,并给出基于该小波的分解与重构算法.     

r重正交小波的构造

首先引入r重正交小波和多尺度分析的概念，然后讨论了r重多尺度分析中闭线性子空间和尺度函数的性质，最后在最一般的情况下，给出了r重正交小波的存在性证明。     

小波变换在突变信号检测中的应用仿真研究

本文介绍了小波变换及其检测突变信号的基本原理,选用了具有低通特性的高斯函数高斯函数作为小波基的小波变换能够有效识别出非平稳态的突变信号,而且小波尺度大小的选择与检测精度有直接关系。     

基于小波变换的抑制心电信号噪声方法研究

针对在采集心电信号的过程中容易产生多种多样噪声的问题,利用小波函数的多尺度多分辨分析的特性,采用小波变换分解重构的方法,选用4尺度对心电信号进行滤波处理.仿真结果表明,该方法对于50 Hz工频干扰、肌电干扰、基线漂移有较好的抑制作用,为心电信号QRS波的识别奠定了良好的基础.     

非线性多尺度分析与自适应图像分割

以基于小波变换的非线性多尺度分析为基础,提出了一种新型的图像特征增强算法,该方法可有效地用于图像区域分,文中以光滑尺度函数产生局域平均权值,用光滑差（ｄｉｆｆｅｒｅｎｃｅ ｏｆ ｓｍｏｏｔｈｉｎｇ）小波变换图像以提取图像的局域亮度变化,从而实现了基于尺度－空间对比度增强的自适应图像分,在实验中,以在视觉信息处理中表现出良好性能的高斯函数为尺度函数,通过对尺度－空间对比度取阈值来实现图像信息的增强,     

二维紧支撑正交多尺度函数的构造

提出了由二维单正交的尺度函数构造二维紧支撑正交的多尺度函数的构造方法,并给出相应组合系数应满足的条件.研究表明,二维正交多尺度函数可由所给二维单正交的尺度函数的线性组合而成,这种由正交的单尺度函数构造出来的多尺度函数不是惟一的,但其平移伸缩构成的空间与相应单尺度函数的平移伸缩生成的子空间相同.     

非洲蜡染图案中的文化符号分类

1.College of Textile;Donghua University;Shanghai 201620;China;2.College of Chemistry and Chemical Engineering;Donghua University;Shanghai 201620;China     

Magnitude Estimation vs Category Scaling of the Hedonic Quality of Food Sounds

Sixteen “bite and two chew” sounds were evaluated for hedonic quality by 52 subjects using both a magnitude estimation and a category scaling technique. Each subject then evaluated, by the same two scaling methods, the eight sounds they liked most and the eight sounds they liked least. The amount of shift in the subjects' scores produced by the changed sample set was the same for both scaling techniques. Both scaling techniques were also very similar in their reproducibility and variability. The function relating the magnitude estimation data to the category scaling data was linear as contrasted to curvilinear functions shown in other studies. This linearity may be related to the bipolar nature of the magnitude estimation scale.     

Consumers’ perception of symbols and health claims as health-related label messages. A cross-cultural study

The package is the first contact between the food and the consumer and an excellent vehicle for communication with the consumer. Visual cues (symbols) on the package can be used to communicate health-related information. Although EU legislation provides for the use of symbols, there could be a still undiscovered or unquantified gap between the consumers’ perception of some symbols and how much these symbols appeal and convince. The objective of this research was to study the perception of symbols and their relative importance, combined with verbal health claims, in perceptions of the product’s appeal and convincingness in two countries, one Mediterranean (Spain) and the other Scandinavian (Denmark). Four symbols were employed in the study: (1) heart-plus-stethoscope, (2) olives (a symbol often used in Spain but not so much in Denmark), and two not directly linked to food products: (3) active person (a person running towards the sun), and (4) gears. Perceptions of these symbols were studied through word association, free listing and conjoint analysis. Three verbal health claims were presented as either benefits or risks in combination with the images. The results showed that the overall idea of the symbols perceived by the participants was similar in both countries but the culture influenced the connotations attached to the symbols. In addition, the symbols on the packaging were found to be more important than the verbal information.     

Ice crystal interspacing in frozen foods

In this paper we show that the ice crystal growth in food and biomaterials is a function of the freezing rate. Our experimental data and literature data on other biomaterials collapse to a single curve, if plotted against the freezing rate. The fitted correlation is compared to scaling rules developed for dendrite interspacing during directional solidification of alloys. We argue that the food freezing process is reasonably comparable to the solidification process in alloys, as is apparent in the comparable exponent in our fitted scaling rule with the one commonly used in alloy solidification.     

论陈家祠建筑符号的特征和隐喻

本文运用建筑符号学的原理,对陈家祠的平面布局符号、空间形态符号、构件符号及建筑外墙材料及装饰工艺符号等方面,从外在的符构形式到深层的审美意蕴作了分析和阐述。     

传统文化经典 当代雅致生活——尊木汇会所赏析

会所是当代人们生活中主要的空间交往类型之一。会所作为一种综合性的服务功能载体符号,给人们生活提供了前所未有的优越条件。会所的室内设计更关系到平常人们使用时的方便性、舒适性等特征。所以从会所室内设计的角度出发,根据具体的会所场所,提出了在主题内容和符号元素两方面加以研究,分别从理性与情感共鸣与内容和形式的结合等方面加以阐述。     

在传统文化中探寻艺术设计之路

在艺术设计领域中,设计作品里运用中国古代传统文化元素的设计不少,但从文化内涵来看,现状并不如人意。很多所谓的对传统的运用常常只是对传统图案简单的修饰加工和复制拼凑,传统在这些作品中只是“美丽的外衣”。我们要用一种结构性的眼光去把握设计艺术中的中国传统文化符号,这样有利于了解设计实践中运用中国传统文化符号的设计思维的本质,并且有助于设计实践中运用中国传统文化符号的理性想象力的展开。     

基于太极图形符号的现代家具设计的研究

本文首先分析了太极图形符号的构成形式和语义及现代家具设计在本土文化上的欠缺,进而运用现代设计语言去重新诠释太极符号的现代语义,提出了太极图形符号运用于现代家具设计的方法,从而启发我们从民族传统图形中去思考现代家具设计,使传统符号获得新生,同时为家具创作提供了一种思维方法。