基于Internet的变电站信息化技术研究

本文描述了电力企业信息化的建设思路、信息系统功能以及电力企业信息网络体系结构．详细分析了变电站综合自动化系统中的监控系统和保护系统的功能，并就其中的若干关键技术问题进行了分析和讨论。     

计算机及其网络在供电企业中的应用

本文论述了计算机及其网络在供电企业中的应用，包括变电站综合自动化、变电站无人值班调度端监控系统、无人值班变电站的遥视系统、配电网基于GIS的管理信息系统、电业局综合管理信息系统及电网规划DSS系统等。     

力控电力版5．0即将推出

力控电力版5．0（pNetPower）完美的结合了通用组态软件和电力专业技术，是使用先进的计算机软件编程技术开发的专业电力系统自动化的组态软件，适用于变电站综合自动化、电厂电气监控（ECS）、企业供配电自动化、水电站综合自动化及楼宇配电自动化等后台监控系统。     

变电站计算机监控系统的设计与实现

近年来，随着计算机技术、网络通信技术和自动化技术的飞速发展，变电站计算机监控系统在新建及扩建的变电站中得到了广泛应用。本文就变电站计算机监控系统的技术方案进行了探讨，并提出了实施方案。     

变电站自动化调试中常见问题分析

针对变电站综合自动化系统调试中存在的问题，结合现场调试工作，提出了自动化调试中的注意事项，并对站端监控功能及远动功能中常见问题进行分析。     

变电站自动化系统中电能管理的两种模式

电能采集和管理是变电站综合自动化系统的重要部分．针对基于Lonworks现场总线和WIZCON平台的变电站综合自动化就地监控后台,本文讨论了两种电能采集管理的模式,并对其性能进行了详细的比较评价。最后,对变电站综合自动化系统中电能采集管理模式的选取提出建议。     

基于EWS的电力远程视频监控系统设计

随着变电站自动化，特别是无人值守变电站的发展，视频监控系统得到了广泛的应用，而现有的变电站视频监控系统缺乏对电力系统特性的充分考虑。为此提出了一种适用于变电站等电力行业的数字视频监控系统，该系统采用EWS将电力设备接入到网络中，无须考虑设备资源的有限问题，具有扩展性高、标准统一、系统稳定等特点。     

1lOkV变电站综合自动化系统设计研究

针对目前变电站综合自动化的新建及常规变电站改造工程，介绍、分析了变电站综合自动化系统的三种基本模式，并提出了一种1lOkV变电站综合自动化系统的设计方案。该方案首先从模式上进行总体选择，然后分别从数据通信子系统、监控子系统、保护子系统进行设计，并针对目前变电站综自系统存在的问题，提出了一些在设计过程中需要注意的问题。     

计算机监控在低压供配电系统的运用

结合我厂供配电网络的特点，提出了在０．４ＫＶ低压供配电网络系统进行计算机实时监控和综合自动化管理。系统采用各车间分站分散采集，中心主站集中监控的方式，共同实现对全厂供配电网络系统的集中监控系统。本文从系统的结构及配置，系统功能等方面进行了概述。     

浅析智能变电站监控系统网络安全渗透技术

变电站在电力系统中具有不可或缺的作用，随着智能电网建设的深入推进，传统变电站逐渐向智能变电站演变。在变电站自动化技术逐渐智能化的过程中，变电站监控系统所面临的网络安全风险日益增加。为了确保智能变电站持续平稳运行，对变电站监控系统进行网络安全渗透测试尤为重要。本文介绍了智能变电站的特点、智能变电站监控系统所面临的潜在风险以及主要的渗透测试技术，对智能变电站监控系统渗透测试流程进行了阐述。     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.