Mobile Agent技术及其体系结构

Ｍｏｂｉｌｅ Ａｇｅｎｔ是一种新型 Ａｇｅｎｔ技术,具有移动性、智能性和异步计算等特点。文介绍了 Ｍｏｂｉｌｅ Ａｇｅｎｔ的技术特点及其体系结构,并简单介绍当前 Ｍｏｂｉｌｅ Ａｇｅｎｔ技术的发展现状和发展趋势。     

Mobile Agents需求及体系结构

Ｍｏｂｉｌｅ Ａｇｅｎｔｓ是分布系统的一种新体系结构和实现方法。Ｍｏｂｉｌｅ Ａｇｅｎｔｓ适用的应用有：网络管理、信息获取、远程设备控制、电子商务、移动计算等。本语文主要从底层讨论了Ｍｏｂｉｌｅ Ａｇｅｎｔｓ的运行需求和体系结构。     

基于MObile Agent的搜索引擎关键技术研究

讨论了如何Ｍｏｂｉｌｅ Ａｇｅｎｔ技术应用到搜索引擎上,并针对基于Ｍｏｂｉｌｅ Ａｇｅｎｔ的新型搜索引擎的关键技术,进行了深入的研究。     

一个基于Mobile Agent的课件搜索系统的框架设计

本文主要介绍了ＤＯＬＴＲＩ－Ａｇｅｎｔ运行环境ＭＡＦ的实现及原理及其相关技术,ＤＯＬＴＲＩ－Ａｇｅｎｇ是将Ｍｏｂｉｌｅ Ａｇｅｎｔ的概念引入网络信息搜索领域中来而设计的一个信息搜索系统,ＭＡＦ是Ｍｏｂｉｌｅ Ａｇｅｎｔ的外部运行环境,包上组成模块：安全管理模块,移动智能体管理模块,移动智能体通信模块,移动智能体传输模块,移动智能体命名服务和移动智能体协作服务。     

基于Java的Mobile Agent原型系统的研究与开发

ＭｏｂｉｌｅＡｇｅｎｔ（ＭＡ）具有可移动性、协作性、异步性等优点,其中可移动性为其他诸多特性提供底层通信支持．其成功实现是开发一个ＭＡ系统必须考虑的关键技术之一。文中以Ｊａｍａ（Ｊａｖａｍｏｂｉｌｅａｇｅｎｔ）系统的开发为实践依据提出了一种善于Ｊａｖａ语言实现ＭＡ原型系统的具体方案,重点介绍了可移动性和ＭＡＦＦｉｎｄｅｒ（ＭｏｂｉｌｅＡｇｅｎｔ　Ｆａｃｉｌｉｔｙ　Ｆｉｎｄｅｒ）的具体实现步骤。     

一种基于Agent的网络计算模型

Ａｇｅｎｔ技术是解决复杂、动态、分布式智能应用问题的关键技术。文章将Ｍｏｂｉｌｅ Ａｇｅｎｔ引入网络计算模型的构造,分析了基于这一模型的信息服务系统的工作机制和特点,讨论了模型实现的关键技术。     

流动agent：一种未来的分布计算模式

流行ａｇｅｎｔ技术对于未来分布式系统的设计、实现和维护技术具有重要意义。它可有效地降低网络拥塞、克服网络隐患,其异步与自主运行特性提高了分布式系统的健壮性和容错能力。本文作者于１９９８年７月－２４日参加了在比利时布鲁赛尔举行的第十二届欧洲面向对象程序设计会议。会上,Ｇｅｎｅｒａｌ Ｍａｇｉｃ公司的Ｄ．Ｂ．Ｌａｎｇｅ作了 “Ｍｏｂｉｌｅ Ｏｂｊｅｃｔｓ ａｎｄ Ｍｏｂｉｌｅ Ａｇｅｎｔｓ：Ｔｅｈ Ｆ     

Mobile Agent系统中通信安全机制的实现

本文首先介绍了Ｍｏｂｉｌｅ Ａｇｅｎｔ及其简单系统模型,接着对其信息加密及基于ＲＭＩ和基于ＴＣＰ流的挑衅－响应（ｃｈａｌｌｅｎｇｅ－ｒｅｓｐｏｎｓｅ）认证的通信安全机制的实现进行了分析,并给出了具体的实现算法;最后进行了实例分析。     

WWW下的分布对象计算模型

该文论述了 ＷＷＷ下几种分布对象计算模型（以 Ｊａｖａ、ＣＯＲＢＡ等为代表的经典模型和流动智能体模型）的特点及局限性,并提出了一种将ＷＷＷ、Ｊａｖａ与ＣＯＲＢＡ、Ｍｏｂｉｌｅ　Ａｇｅｎｔ等分布对象技术互补结合的方案。     

基于主控流动的多级Multi-Agent系统

从分析人的思维活动着手,提出了模拟人类智能活动过程构筑Ｍｕｌｔｉ－Ａｇｅｎｔ系统的方法,并由该方法构造了基于主控流动的多级Ｍｕｌｔｉ－Ａｇｅｎｔ系统。其主要特点是把小 Ｍｕｌｔｉ－Ａｇｅｎｔ系统视为一个特殊的Ａｇｅｎｔ,并由这种特殊的Ａｇｅｎｔ组成更高一级的Ａｇｅｎｔ系统…从而形成多级Ｍｕｌｔｉ－Ａｇｅｎｔ系统,而且在每一级Ａｇｅｎｔ系统中均采用了主控流动策略,使得整个系统能够把巨量的Ａｇｅｎｔ有效地结合起来。系统效率高,能主动改变和适应环境,为设计具体的大规模Ｍｕｌｔｉ－Ａｇｅｎｔ系统提供了一种可行的解决方案。     

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。