基于Agent的Web Services自适应工作流模型的研究

如何让企业可以灵敏反应外部环境的变动并快速改变企业内部的流程作业,是传统工作流管理系统面临的最大挑战.提出一种基于Agent的Web Services工作流模型(AW-WFM)来解决这个难题.在这个模型中,基于Agent的技术实现一种工作流协作机制,而Web Services技术为工作流管理系统提供了计算资源.最后,介绍了AW-WFM在上海大学协同办公系统中的应用.     

工作流管理系统的Web Services协议分析

工作流管理系统是实现业务过程管理的重要工具。工作流系统以Web Services方式运行，需要有语义清晰的Web Services协议支持。文中从分析Web Services的技术屡次人手，详细讨论了Wf-XML协议的技术基础及其特点。最后总结了Wf-XML作为工作流系统的Web Services协议的优势和不足之处。     

基于Petri网的复合Web Service构造与分析

利用Petri网对工作流模型进行分析与验证是目前行之有效的一种方法。该文应用工作流思想研究Web Services的复合问题,利用Petri网技术分析Web Services的调用过程,并对Web Services网进行形式化分析,给出Web Services复合群到工作流网的映射规则。     

工作流管理系统的Web Services协议分析

工作流管理系统是实现业务过程管理的重要工具。工作流系统以Web Services方式运行,需要有语义清晰的WebServices协议支持。文中从分析Web Services的技术层次入手,详细讨论了Wf-XML协议的技术基础及其特点。最后总结了Wf-XML作为工作流系统的Web Services协议的优势和不足之处。     

基于Web服务和工作流技术的应用集成研究

基于Web服务的企业应用集成(EAI)以其简单、开放、灵活、高效的优点而成为解决企业应用集成,进而实现企业内和企业间信息共享的有效途径.在基于Web Services的EAI体系结构基础上,提出了基于Web Services和工作流的EAI体系结构并描述了其实现方法.     

基于Web的分布式企业工作流信息管理

分布式、异域构性、跨领协同工作是现代工作流技术研究的一个重要发展趋势,本文以分析目前工作流管理系统发展现状为基础,对比了分布式技术CORBA、ActiveX/DCOM、Java和Web Services的特点.将Web,Java两种处理技术相结合,提出了基于Web Services的分布式企业工作流服务器框架和相应过程模型.重点讨论了工作流引擎的设计方法及调度策略.实现了工作流信息的分布式处理.     

异构工作流管理系统的互操作性研究

随着工作流技术不断发展,工作流产品的应用越来越普及,不同企业的工作流系统也越来越多的需要协作,然而目前工作流系统之间的互操作问题没有得到很好的解决,这就成为工作流技术进一步应用的瓶颈,如何实现不同工作流引擎之间的互操作成为急需解决的问题.本文提出了一种基于Web Services、Wf-XML的支持异构工作流管理系统之间互操作模型.其思想是将工作流的对外提供的功能包装为Web服务,并使用Wf-XML格式来包装互操作消息,使不同工作流之间能够互相查找工作流服务、解析互操作请求,从而实现服务的互相调用.     

基于CSCW技术工作流系统

本文研究了基于Web Services技术的协同工作流在信息系统中的作用,并分别结合CSCW、工作流系统和WebServices的技术优点.讨论了新的基于Web Services的协同工作流系统结构.     

基于Web Service架构的工作流技术研究

随着市场竞争的日益激烈，企业必须能够对其业务过程进行快速的重组，工作流技术受到了广泛的重视和研究，为实现企业的经营目标提供先进的手段。但是当前的工作流技术，仍有明显的缺陷，尤其在建模技术方面还不够成熟。基于Web Services 架构来实现工作流，应用WSFL（Web Services Flow Language）对工作流进行描述和实现，弥补了当前工作流技术发展中的不足。     

活动预测模型驱动的Web 服务合成

Web 服务工作流被描述成一系列活动的组合,Bonita 提供的流程引擎可以验证产生Web 服务工作流Bonita 基于活动预测模型的基础性构造,实现了流程中活动可预测执行的功能,它使用SOAP 和XML数据绑定技术的Web Services 封装了已有的工作流业务方法并将它们以基于J2EE 的Web Services形式发布。基于活动本体的预测模型使得工作流不再是传统意义上的顺序执行,而是可以实现执行预测,使得Web 应用无论在功能上还是互操作性方面都得到加强;这种机制使得工作流的合成适应Web服务动态     

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。