长输油气管道远程设备监测维护方案

针对国内长输油气管道设备维护的现状,通过设备状态采集方法、设备特性和状态判定方法、设备状态实时监测、设备远程接入方法、设备维护支持平台等各项技术研究,以采用面向对象方法抽象的油气管道生产过程设备模型体系为基础,形成涵盖设备运行状态实时监测、设备运行状态在线诊断分析、设备远程维护三者有机结合的管道设备维护一体化解决方案。     

一个基于渐进传输和动态感兴趣区域编码的远程维护系统

计算机技术和网络技术的发展,使得人们在远距离上进行实时协同工作成为可能。但是,如何在状态不稳定和有限带宽的无线通信网络环境下来保证远程维护的顺利实现,仍然是一个新的研究问题。本文提出并构造了一个新型的远程维护系统RMS,它利用静态图像压缩编码的码流可伸缩性和静态感兴趣编码特性,增强了无线通信网络环境下对远程协同维护的图像支持能力,能有效满足远程维护的特殊要求。     

大型设备网络化监测与维护系统体系结构研究

以基于状态的维护开放系统体系结构（OSA-CBM）模型为标准架构，以XML/SOAP和Web Services技术为网络通信支持，提出了一种“功能—服务—系统”三维体系结构，为大型设备网络化监测与维护系统建设提供了一种新的设计开发模式．基于该体系结构设计开发的分布式设备远程状态监测与故障诊断系统已在工程项目中获得成功应用．     

流量计远程维护系统的设计

针对流量计现场维护的困难，设计了一套通过Internet对流量计进行远程维护的系统。该系统主要由带有通信接口的现场流量计、无线通信网关和远程监控计算机组成，现场流量计和无线通信网关之间通过RS485总线进行通信，无线通信网关通过GPRS手机模块接入Internet实现和远程监控计算机之间的通信，从而实现对现场流量计的远程维护。该系统经过改进，也可用在其他设备的远程维护。     

基于网络的变电站远程维护系统的开发

通过对变电站远程维护系统开发现状的分析，提出了变电站远程维护系统需要实现的功能。应用电力远动技术和计算机远程控制技术，实现了一个变电站远程维护系统原型，为今后使用系统的开发应用提供了思路和启发。     

物联网杀虫灯远程状态监测与控制系统的设计与实现

农村田间LED杀虫灯设备存在无人监管、难监管和维护等现实难题.对此,通过软硬件相结合的技术解决方案,设计并实现一款物联网杀虫灯远程状态监测与控制的原型系统.该系统具有杀虫灯电池装置自我保护和远程状态监控等应用功能,具有一定可参考性.     

天气雷达的远程监控与诊断技术

作为一种大型复杂电子设备,气象雷达的维护急需从传统的技术专家现场维护,转变到借助现代发达的网络技术和电子信息处理技术的远程维护处理技术.本文提出了一种解决方法.可以通过在本地、远程实时在线监控雷达工作状态,并根据监控信息.给出智能故障诊断技术,同时以多媒体技术实现远程的故障诊断会商,故障监控中心帮助雷达站排除故障.通过这种处理方式,降低了维护成本,提高了工作效率,保障了气象雷达正常工作.     

基于家庭网络技术的燃气壁挂炉故障监测系统设计

从燃气壁挂炉维修与维护的局限性出发,提出基于家庭网络技术的燃气壁挂炉故障监测系统。该系统保留传统燃气壁挂炉显示面板和控制主板的通讯接口,硬件上串接一个故障跟踪模块。在家庭网络下,故障跟踪模块过滤出燃气壁挂炉的实时状态信息,通过网络上传到远程服务器。远程协助维修员通过上传的实时状态信息,在线给予用户故障剔除方案。本设计实现了燃气壁挂炉的远程维修与维护,为后续的燃气壁挂炉故障诊断风险分析提供了可靠的依据。     

基于Ajax技术的MVC模式在远程控制实验室中的应用

针对传统的同步交互模式,远程用户难以实时获取远程实验室中设备运行状态的问题,利用AJAX (Asynchronous JavaScript and XML)技术定时发送查询请求,实现了远程设备运行状态的实时显示。为了方便代码的维护和调试,引入了MVC（Model-View-Control）设计模式。实际使用表明,引入AJAX技术,能有效的减小服务器的响应时间和网络流量。     

学用Web接口远程维护Win2003服务器

微软的网络操作系统Whdows server 2003(简称Windows 2003)新增了很多有价值的功能，如远程维护Web接口。利用该功能，网络管理员可以通过Web浏览器远程维护整个Windows 2003系统。下面就一起体验远程维护Web接口带给我们的便利吧。     

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。