基于网格技术的交通信息服务平台的设计与实现

介绍了网格技术在交通信息服务平台中的应用策略,给出了一个基于网格技术的交通信息服务平台（SHGTISP）的服务部署和信息流程及其主要模块的主要工作流程。阐述了网格中间件在SHGTISP中的应用和SHGTISP中的并行算法设计要点,以及实现SHGTISP的开发环境和系统运行环境。实践表明,网格技术能为交通信息服务平台提供高性能的计算和开放的资源共享能力。     

基于网格GIS的长江地质灾害信息共享方法研究

针对长江地质灾害信息管理体系不够完善等问题,将网格技术应用于GIS领域,在研究与分析相关理论技术的基础上,研究基于网格GIS服务技术的长江地质灾害信息共享模型,为解决各级部门现有信息系统共享性偏低、不支持互操作等问题提供有效的方法与措施,实现地质灾害信息的科学化管理。     

基于软件代理的网格信息服务

计算网格允许对地理域上分散的资源进行大范围的、深入的、一致的共享。它们的固有属性将发现处于不同行政区域的资源和预测资源的性能并监控其行为的事务进行合并。监控和发现服务MDS（Monitoring and Discovery Service）是Globus工具集提供的一项主要服务,它可以用于为已存在的基于代理的资源发布和发现系统提供网格信息服务。给出一个代理系统,它使用MDS中的网格信息协议GRIP（Grid Information Protocol）和网格注册协议GRRP（Grid Registration Protocol）去发现虚拟组织并监控相关资源,使得此系统具有资源代理、监控及性能预测的作用。     

一个科学计算服务网格应用系统的设计与实现

为扩大计算能力的共享规模，并充分复用已有的计算程序．提出了一个SCS服务的概念．一个SCS服务把一个科学计算程序和它的宿主环境（计算节点）结合起来，构成了一个提供科学计算服务的基本单元．设计了一个网格应用系统（PCG系统）来管理SCS服务．PCG系统是一个3层的架构，顶部是一个Web门户，中间是SCS服务管理器，网格中间件系统位于后端．SCS服务管理器是整个系统的核心部分，包含了四个模块：通讯模块（comm）、需求转换模块（User Requirements Translator）、服务信息查询协商模块（Service Query＆Broker）和服务提交管理模块（Service Handler）．基于GlobusToolkit作为中间件，PCG系统已经在北京大学校园网内跨越多个局域网进行了实现．在PCG系统上．已经成功地运行了若干个实际科学计算的实例．     

企业信息网格中的服务点播

为了实现数据信息在Internet上的广域共享和快捷获取,产生了一种信息网格的软件框架,而企业信息网格技术正是目前企业信息共享进程中一项比较热门的技术。介绍了网格、信息网格技术的概念,并进一步阐述了企业信息网格的基本框架及其实现流程,然后以具体的项目《企业信息网格关键技术研究》为例,提出了服务点播技术以及它的开发实现,并且在与Web Service客户端技术的比较中,明确了服务点播技术的优点。     

企业信息网格中的服务点播

为了实现数据信息在Internet上的广域共享和快捷获取，产生了一种信息网格的软件框架，而企业信息网格技术正是目前企业信息共享进程中一项比较热门的技术。介绍了网格、信息网格技术的概念，并进一步阐述了企业信息网格的基本框架及其实现流程，然后以具体的项目《企业信息网格关键技术研究》为例，提出了服务点播技术以及它的开发实现，并且在与Web Senrice客户端技术的比较中，明确了服务点播技术的优点。     

一种可扩展网格监控系统的设计与实现

基于网格服务架构中的网格服务和网格信息服务,提出了一种新的系统结构来构建网格监控系统,给出了它的一个原型系统实现。该结构采用了网格服务调用的方法,借鉴了层次化监控模型和GMA监控模型的特点,具备良好适应性和可扩展性。多种监控信息获取机制的使用适应了不同的监控需求,使监控系统在实现上更具灵活性和可靠性。     

基于网格的桥梁远程结构状态评估系统研究*

利用网格技术基于开放式架构、通用技术规范以及标准中间件技术支持等优点,把分布的结构状态评估资源整合为网格服务,并在此基础上进行管理和调度,构建了基于网格的桥梁远程状态评估系统。设计了基于语义Web服务的网格服务模型来规范化服务的建模;结合Globus Toolkit 4（GT4）中间件,开发了网格服务管理模块,支持服务注册、搜索等功能;构建了基于agent技术的网格任务管理模块,支持结构状态评估任务的分解、分配、调度等功能。以洞庭湖大桥结构健康监测为背景,建立了应用原型。实践表明：系统能有效支持结构健康监     

实现全新信息服务——HP存储网格战略

存储网格(StorageGrid)是HP存储的发展愿景,它包含了相关的技术、流程和服务,存储网格是迈向存储公用设施的重要一步。存储网格是交付全面的可扩展信息服务的基础,ILM(信息生命周期管理)属于这些信息服务中的一部分。ILM固然重要,但它也只是HP计划交付的更全面的信息服务中的一部分。     

分布式资源共享的网格信息服务

网格技术使得广泛的大规模的资源共享成为可能。在如此分布、多样、动态的网格环境中,信息服务成为任何网格软件框架的重要部分,它为发现和监控提供了最根本的机制,也因此为系统规划应用行为奠定了基础。介绍的信息服务系统结构,明确了底层查询和注册协议以及优化方法,从而简了化单个实体纳入（包括支持不同查询语言和发现策略的集合索引）信息结构的过程。     

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。