J2EE平台上基于Web Services的数据集成研究

数据集成是共享分布的异构数据资源的核心问题.在分析常用数据集成技术的基础上,结合Web Services技术和组件技术,提出了基于Web Services和组件技术实现Mediated系统的数据集成方案.最后,以J2EE为平台给出了一种面向服务的低偶合的数据集成框架,中介器和包装器由EJB组件实现,由组件部署的Web服务为用户提供一个透明的统一的接口,实现异地异构数据资源的共享和整合.     

多组件Web可视化开发平台在调度自动化系统中的应用

Web可视化开发平台着重阐述了可视化的开发Web应用, 不仅融入了单点登录、图形自动生成、表单设计器、布局设计器、设备拓扑生成和业务功能快速开发功能组件, 还分析了各地区电网业务需求, 进一步强化了各个组件的功能. 该平台核心实现了零编码、可视化开发Web应用系统的功能, 实现了业务逻辑和代码编程的分离; 同时, 该平台结合各地区电网调度具体功能需求进行灵活的多组件配置. 通过冀北和福建自动化设备开发项目实践, 有效验证了Web可视化开发平台能有效提高业务人员的开发效率、及时响应需求变化, 同时模块化的组件可灵活定制界面.     

在.Net平台下构建在线会员系统

在.Net平台下进行Web项目开发,简化了开发过程.在ASP.NET下可以很容易的调用.Net组件,实现复杂的业务逻辑.介绍了一个基于.Net的在线会员系统的分析与设计,并对基于.Net平台的Web系统实现所涉及的一些关键性的技术进行了分析,其中包括安全性设计,多语言界面的实现,网站模版与皮肤的应用,大量数据访问等内容.通过这个会员系统项目,总结了在.Net平台下进行Web开发经常会遇到的一些问题,因此对于构建.Net框架下的Web系统有一定的参考意义.     

基于组件的电信网管子系统互联技术

该文讨论了利用分布式组件技术扩充Q3接口协议栈以构造类Q3来实现CMIS(Common Management Information Sevice)的管理业务的方法，探讨了Q3接口的实现问题。在开发TMN系统时，以Web作为TMN子系统互联的应用平台，探讨了利用B/S结构实现分布式计算应用的问题，综合利用了Web技术、面向对象技术、分布式组件技术，实现了基于TMN的综合管理系统TIMS。     

基于软件体系结构的WEB_MIS应用平台设计

基于软件体系结构的软件设计方法和功能复用的组件技术，本文提出了一个适用于Web应用系统、与具体的业务逻辑和数据松散耦合的NTier组件模型，并运用ASP．NET的组件技术和Web服务开发了N-Tier组件模型的组件体系，构建出一个可进行二次开发的具有开放性、通用性、重组性的WEBMIS应用平台。通过该应用平台开发人员仅需进行简单的应用数据和逻辑定义即可实现Web应用系统的自动生成。     

基于异构Web服务的虚拟实验平台

目前大部分虚拟实验平台缺乏对异构组件的支持。为此,提出一种基于异构Web服务的虚拟实验平台,该平台采用Web服务技术,以其语言独立性、平台无关性等特点,将异构组件进行Web服务化封装,解决异构组件的通信问题,提高开发效率,实现组件重用。介绍系统平台的架构模型和系统实现的关键技术,讨论对异构组件进行服务化封装及实验流程执行引擎的设计与实现过程,并以该平台为基础,通过Web服务封装将C++和Matlab开发的图像处理组件集成到系统中,构建数字图像处理虚拟实验室。     

XML在可重构制造执行系统组件管理中的应用

基于组件技术研究和开发可重构制造执行系统(RMES),需要解决大量不同功能业务组件的维护问题。本文基于XML-Schema机制设计了一套标准化描述方法,来定义RMES组件的自然属性、继承属性、接口属性的具体结构,实现RMES组件在线实时管理功能,有效地解决了组件库中进行组件的维护问题。     

基于Web的分布式对象技术

随着Web应用的迅猛发展,复杂大型Web系统的设计需要更强大的软件设计技术来支撑.对此,文中探讨了基于Web的分布式对象技术,指出了分布式Web系统结构及其运作机制,深入分析了三大主流分布式对象和组件技术在Web系统开发中的应用,阐明了系统实现的方法.以此交流和推动分布式组件技术在Web中的应用,拓展Web软件设计的能力.     

嵌入式GIS组件研究

嵌入式GIS在导航、定位等业务中有广泛的应用前景.在基于组件的开发模式下,嵌入式GIS平台将具有更高的重用性.根据嵌入式组件思想,本文设计和实现了一个嵌入式GIS组件,该组件支持数据格式转换、空间数据显示与查询,并提供接口允许组件使用者调用.通过该组件,避免了在不同嵌入式GIS中重复开发GIS模块,提高了软件的复用性.实验证明了组件设计的正确性,适合在不同的嵌入式环境下应用.     

基于Web Services的产生式专家系统设计

结合Web Services的异构平台互通的能力,设计一个跨平台的、具有良好扩展性的基于Web的分布式决策专家系统榘构,系统通过组件封装推理机、知识库管理和维护等业务逻辑处理模块,从而具有良好的扩展性、伸缩性、兼容性和协作性,并且实现多专家系统的分布式协同合作.     

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     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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。