基于WSRM协议的WEB服务动态管理模型设计

本文主要设计了一种基于WSRM协议的WEB服务动态管理模型。首先,通过详细分析WEB服务复合及管理的形成原因和特性,并结合现有的分布应用管理模型和技术,提出并构建一种适于WEB服务管理的分布应用管理协议-WSRM协议。接着,在WSRM协议的基础上,我们构建了一种通用的,功能较全面的WEB服务动态管理模型,该管理模型能够实现对WEB服务进行动态的,全面的性能监视和管理,并且在构建该管理模型中,通过使用WSRM协议,该管理模型能够适应WEB服务复合的异构性、自治性和动态性,并具有良好的可靠性和扩展性。     

基于动态网站的语义数据挖掘模型研究

WEB使用挖掘正逐渐成为WEB个性化服务领域的研究重点,它通过对用户历史使用信息的分析,实现网站的个性化服务。然而,由于动态网页对象URL结构的特殊性,导致了WEB使用挖掘在动态网站应用上的局限性。论文在基于WEB使用挖掘分析的基础上,针对动态网站数据挖掘和个性化服务,提出了语义数据挖掘模型,并详细描述该模型的挖掘流程。     

基于Agent的嵌入式动态协议通信系统

为了扩展嵌入式移动终端的通信能力,使之能够透明地与所处局域网进行直接通信,本文采用嵌入式通信协议构件化思想和Agent技术,建立基于Agent的嵌入式动态协议通信系统框架模型,并给出通信方式与过程,以及针对该模型的协议构件化分解及协议构件服务复合方法,从而为探索普适环境中的嵌入式移动终端与所处局域网进行直接通信提供了一种新方案。通过对嵌入式移动终端从协议服务器动态获取所需的协议服务进行实验分析,验证了该方案的有效性。     

基于WEB的目录服务管理系统的设计

目录服务已经成为Internet上的一种重要的服务，目录管理系统是目录服务的核心部分。但是现在通用的目录服务管理系统都不是基于WEB的，当利用LDAP目录服务为人们提供个性化服务的时候，提供一个基于WEB的管理接口是非常必要的。文中阐述了基于WEB的LDAP目录服务管理系统的设计思想和实现方法，通过使用标准的协议和常用的Internet技术的软件来构建系统，系统提供了一种通过一个统一的接口来管理多个LDAP服务器和目录项的机制。同时，笔者的设计和实现也考虑了系统中相关的安全问题。     

一种基于WEB服务的安全多代理模型

文章介绍了一种基于WEB服务的安全多代理模型,在阐述了多代理系统的主要特点和WEB服务的核心概念的基础上,介绍了该模型的组成、功能和各部分之间的协同交互。该模型很好地融合了多代理技术与WEB服务各自的优点,能够更加高效地构建出应用于发布环境中的安全的、健壮的多代理系统。     

利用WEB SERVICES集成管理信息系统中的WEB应用

WEB服务使业务流程支持面向对象和基于组件的应用。可以通过增加一个服务协议来增强现有的模型从而支持WEB服务。服务协议使系统应用和系统接口完全分离。SUN公司的J2EE平台和微软的.NET平台都能很好的建立和WEB服务。本文探讨了如何利用两个平台来集成企业信息系统和基于JAVA的WEB应用。     

利用WEB SERVICES集成管理信息系统的WEB应用

WEB服务使业务流程支持面向对象和基于组件的应用,可以通过增加一个服务增加一个服务协议来增强现有的模型从而支持WEB服务.服务协议使系统应用和系统接口完全分离.SUN公司的J2EE平台和微软的.NET平台都能很好的建立和支持WEB服务.本文探讨了如何利用两个平台来集成企业信息系统和基于JAVA的WEB应用.     

主动网络管理体系结构的研究

主动网络作为一种新型的网络体系结构，能够有效地加快网络协议和服务的开发，验证和部署，但与此同时，对它的管理也需要采用与传统网络管理不同的技术，针对主动网络支持的协议和服务动态变化的特点，提出了一种基于管理小应用（MALet)和管理代理（MA）的主动网络管理器能够根据主动网络服务的变化而动态构造网络管理应用，本地节点管理器还为主动节点的自管理提了一种有效的手段，主动网络管理代理执行环境为管理代理的动态部署提供了支持，在该管理体系结构下，管理者可以方便灵活地对主动网络进行有效地管理，该体系结构还与传统的网络管理兼容。     

基于WEB的目录服务管理系统的设计

目录服务已经成为Internet上的一种重要的服务,目录管理系统是目录服务的核心部分.但是现在通用的目录服务管理系统都不是基于WEB的,当利用LDAP目录服务为人们提供个性化服务的时候,提供一个基于WEB的管理接口是非常必要的.文中阐述了基于WEB的LDAP目录服务管理系统的设计思想和实现方法,通过使用标准的协议和常用的Intenret技术的软件来构建系统,系统提供了一种通过一个统一的接口来管理多个LDAP服务器和目录项的机制.同时,笔者的设计和实现也考虑了系统中相关的安全问题.     

ALBC4WS:一种基于软件体系结构生命周期的动态服务合成框架

从软件体系结构的角度出发,对Web服务组件与服务合成等概念以及性质进行了形式化定义与分析,提出了一种基于体系结构生命周期的Web服务动态合成模型：ALBCAWS模型．该模型是在服务的发布管理算法和服务的自动合成查询与恢复管理算法的基础上为服务组件的合成提供了一个动态的、可管理的服务合成支撑框架．在OPEN—WEB原型系统的开发实践表明,该模型提高了服务组件的合成能力、保证了合成系统的健壮性和自适应性,同时也为Web服务的合成过程提供了有效的动态管理机制．     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.