样条小波自卷积处理窄锐重叠信号的研究

采用函数d1/dx1＋exp（x）为分辨因子与样条小波滤波器相作用构成样条小波峰分辨器,对毛细管电泳窄锐重叠信号的处理,得到较好结果,在重叠峰分辨的同时滤去噪声,达到了同时滤噪和分峰的目的。被处理的重叠信号得到基线分离,分峰前后峰位置和峰面积的相对误差小于5．0％。应用于5个芳香胺类化合物的混合物的毛细管电泳窄锐重叠信号的处理,得到满意结果。     

一种新型的曲线拟合技术在分析信号处理中的应用

研究了一种新型的曲线拟合技术－－样条小波最小二乘法（ＳＷＬＳ）在处理分析化学信号中的应用。作为一种滤除噪声的新技术，详细了各种滤波对滤波结果的影响。若选择了合适的参数，就可以从信噪比Ｓ／Ｎ＝０．５的高噪声中提取有用信息。且峰电流的误差小于３．０％，峰电位的误差小于１０％。并将之与小波多频率通道滤波法（ＷＭＣＤ）及样条最小二乘法（ＳＬＳ）进行了比较，发现该方法可以解决ＷＭＣＤ及ＳＬＳ中存在的一些问题     

三种B-样条小波基处理重叠信号的比较

以B-样条小波为分析小波，提出了用于分析化学重叠信号解析的新方法一连续样条小波变换。详细讨论了采用二阶、三阶、四阶基数B-样条小波函数时，连续样条小波变换对重叠信号的解析，结果表明：连续样条小波变换应用于分析化学信号的处理，能使峰变窄同时还能提高信号的信噪比，是一种新型有效的重叠信号解析方法；对比三种样条小波基的处理结果，二阶B-样条小波基优于其余两种。     

基于频域小波变换的Fourier去卷积法研究

将小波变换用于对频域信号的处理,提出了用频域小波变换获得的模糊项作为线性函数的Fourier去卷积法.与其他FSD方法相比较,本文提出的方法对不同类型峰形信号如HPLC信号均具有良好的分辨效果.由于不用选择线性函数,该方法还具有通用性较强,操作简便等优点.重叠峰分辨效果好的主要原因是由于从Fourier变换得到的模与其经小波变换获得的模糊项具有相似的线性和峰宽,能较大程度与原始谱峰相符.该方法有望用于不同类型重叠峰信号的分辨.     

样条小波最小二乘法处理毛细管电泳信号

运用样条小波最小二乘法（SWLS）处理峰形尖锐的毛细管电泳信号，获得满意结果。经过两次处理后，与样条小波变换处理结果相比，不仅噪声被滤除，峰形不变，峰高不受影响；数据点无须为2^n(n∈z）。     

样条卷积用于气相色谱重叠峰的分辨

本文采用了样条卷积（SC）的方法用以分辨重叠峰，通过这个方法考察了有机氯类农药DDT中的2个同分异构体P.P‘-DDD和O.P‘-DDT气相色谱重叠峰，结果表明信号峰的分辨率由处理前的0.840提高到处理后的1.496。     

含较高噪声重叠峰的分辨

采用Daubechies正交小波滤波和样条卷积分峰联用方法对信噪比S／N≥2的含噪重叠双峰进行滤噪和分峰处理。滤波部分采用阈值法,较详细地探讨了阈值的选取规则;分峰部分利用样条卷积法,并给出了其算法公式,处理速度较快,算法也较简单。通过对模拟和实验信号的处理,发现该联用方法很有效,处理后的峰的峰位置误差≤3.0%,峰面积误差≤3.0%。     

含较高噪声重叠峰的分辨

采用Daubechies正交小波滤波和样条卷积分峰联用方法对信噪比S/N≥ 2的含噪重叠双峰进行滤噪和分峰处理。滤波部分采用阈值法 ,较详细地探讨了阈值的选取规则 ;分峰部分利用样条卷积法 ,并给出了其算法公式。处理速度较快 ,算法也较简单。通过对模拟和实验信号的处理 ,发现该联用方法很有效 ,处理后的峰的峰位置误差≤ 3 0 % ,峰面积误差≤ 3 0 %     

基于双树复小波的色谱重叠峰分解方法研究

针对色谱分析中重叠峰的分解问题,提出一种基于双树复小波变换的色谱重叠峰分解方法。首先深入研究了双树复小波变换相较于离散小波变换的优越性;然后利用双树复小波变换分解与重构模拟色谱信号,计算分离度、峰位和峰面积,与离散小波变换的结果对比,并对噪声信号进行测试;最后利用双树复小波变换分解与重构实验所测得的色谱信号。实验结果表明,双树复小波分解色谱重叠峰比一般的实数小波准确,能够有效地分离重叠峰,分解后峰形平滑对称未发生畸变,峰位相对误差与峰面积相对误差较小,适合定性定量分析。     

基于非均匀B样条小波的图像水印算法

提出了一种基于非均匀B样条小波变换的数字水印嵌入与提取算法,并通过实验分析了其鲁棒性。由于利用非均匀B样条小波对图像进行分解可以得到小于原图的任意大小的低分辨子图,因而利用方法可以方便地嵌入小于载体图像的任意大小的二值水印,并可以盲提取。实验结果表明,该算法具有较强的抗各种常见攻击的鲁棒性。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。