工业以太网络技术的应用与发展

针对信息孤岛难于集成的问题，阐明了以太网络进入工业控制领域的必然性及其优势；分析了工业以太网络在控制领域应用中存在的问题及其改进措施；最后结合工程实践，讨论了工业以太网络的应用方式和发展前景。     

MULTIBUS总线双通道以太网通信计算机

本文介绍一种运行于MULTIBUS总线上的加固智能以太网通讯控制模块，该模块在iRMX实时操作系统上可实现网络实时传输，其实时性及环境性能，均适用于军事领域。     

基于NET Framework+Oracle的工业以太网络架构

主要介绍以太网络在自动控制领域的应用,基于NET Framework,以网络数据库为后台数据库,利用第三方硬件控制模块的软件,提出了一个工业以太网络的基础架构模型。经实验环境的测试,证明了该模型的正确性、实用性、可行性,为工业以太网络的应用实践提供了坚实的理论和实践依据。     

自主研发网络变频器的网络控制应用研究

本文介绍了基于工业以太网通信变频器的设计思想,在分析网络变频器的通信机制的基础上,建立了一种基于数据通信优先级分类的工业以太网通信控制策略.系统利用上位机PID算法,根据网络传递的水位信号计算变频器输出频率,从而控制双容水箱水位.实验结果表明,通过这种工业以太网通信可有效地控制变频器进行双容水箱水位控制.     

利用单片机控制以太网网卡进行数据传输的研究

网络的迅速发展给控制领域带来了新的发展思路，利用以太网进行工业电器的控制成为人们非常感兴趣的话题，而怎样使电器接到以太网上则是关键。主要介绍了用单片机控制网卡来进行电器的以太网接入。     

基于工业以太网的模拟量数据采集模块设计

工业以太网是新兴的网络控制技术 ,具有以太网通信能力的智能控制模块是构成工业以太网控制系统的基础。介绍了具有以太网通信能力的模拟量采集智能控制模块的开发及其DynamicC驱动程序的框架。此控制模块的研制成功对于开发工业以太网数据采集系统和控制系统具有重要意义。     

一种以太网与PROFIBUS-DP数据交换的实现

介绍了一种基于TCP/IP协议的以太网络与PROFIBUS-DP的工业现场总线之间数据相互转发的实现方法.以太网络部分采用精简的由51系列单片机实现的TCP/IP协议栈加网络控制方式,PROFISBUS-DP部分采用专用协议芯片SPC3方式.从而实现了一种工业以太网络与PROFIBUS-DP现场总线之间的数据交换,为工业企业实现管控一体化提供了一种灵活的组网方式.     

工业以太网实时通信技术

以太网应用于现场设备控制层是当前控制网络发展的趋势，但是它必须克服实时通信这个最大的障碍．本文结合了以太网的通信机制，分析了以太网确定性实时通信的要求，同时介绍了当前实时以太网通信的几种方案．     

三网合一在LF钢包精炼炉的应用

简要阐述了企业数据网、工业以太网和控制网三网合一在杭州钢铁集团LF钢包精炼炉自控系统的应用，重点介绍了PLC控制网络、工业以太刚、数据企业刚三网合一组成该精练炉自动化控制系统，取得了很好的应用效果。     

Moxa EDS-208 Entry-level工业级以太网络交换机工业级设计符合您的以太网络解决方案

工业通讯领导厂商四零四科技推出最新款Entry-level入门级工业以太网络交换机EDS-208系列产品。MOXA EDS-208为一款8端口非管理型以太网络交换机，其拥有DLN-Rail安装方式，IP30防尘设计及24VDC/VAC电源输入等工业等级设计及稳定度，为一轻巧且随插即用的以太网络交换机。     

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.