智能光碟管理装置的设计与实现

针对目前光碟管理装置空间使用效率低,操作复杂等缺点,介绍了一种基于单元模块化结构的新型光碟智能管理装置,包括模块化单元的机械结构、基于mega32单片机的控制器硬件设计总体方案、实现光碟随意储存的存入位置检测模块及基于ACCESS数据库的光碟信息管理系统的设计;并讨论了取碟机构精度问题的解决方法和在同时取出多个光碟时自动选择最佳取碟顺序的最优路径算法的实现;通过试验样机表明,装置具有较高的可靠性、实用性和广泛的市场前景.     

基于ARM9的便携式内窥镜系统设计与实现

在介绍通用工业内窥镜的结构及原理的基础上,推出了一种基于ARM9的便携式内窥镜装置。该装置由照明系统、CMOS摄像头、嵌入式系统三部分组成。相对于普通内窥镜而言,具有体积小、重量轻、结构简单、携带方便、成本低等优点。     

基于ispPAC和单片机的热电偶实验仪

介绍了一种基于EDA技术的热电偶实验装置。本系统以ispPAC和单片机为核心电路,辅以高精度A/D转换器件及LED显示器,实现对温差电动势的测量及数字显示。该系统具有稳定性好、集成度高、灵活性强、实验成本低等特点。     

一种无线温湿度检测装置的设计与实现

设计了一种基于温湿度数字式传感器的无线温湿度检测装置,以单片机为控制核心,采用数字式温湿度传感器来检测目标的温度和湿度信息,利用软件编程完成温湿度信息的处理及系统功能实现,并通过LED显示相应测量数据。该装置具有温度及湿度数据的测量及显示、工作模式选择和无线通信等功能。     

基于DSP的嵌入式SVC控制装置的研究

固定式电容机械投切无功补偿系统存在实时性差、只能分级投切和机械装置动作频繁等缺点;动态无功补偿系统SVC采用TCR和TSC组合方式,可对无功功率进行动态、连续补偿;针对某一具体工程应用,确定了SVC主电路方案和相关技术参数,设计了基于DSP2000系列TMS320F2812的动态无功补偿系统控制装置,详细介绍了控制器的原理及实现技术以及软件功能,给出了系统采样信号、触发信号等理论与实测波形,实验结果表明动态型静止无功补偿装置具有运行可靠、控制精度高、调节时间短及实时性好的优点.     

基于虹膜识别的身份鉴别

描述了基于虹膜识别的身份鉴别系统.该系统包括虹膜图像摄取、图像预处理、特征提 取和匹配四个部分.虹膜图像摄取采用了自主开发研制的装置,特征提取采用Gabor滤波和 Daubechies-4小波变换等纹理分析方法,匹配采用方差倒数加权欧氏距离方法.与现有的其它 方法相比,该方法利用了二维虹膜图像丰富的纹理信息并具有旋转、平移和尺度不变性.     

基于单片机控制的自动取号叫号装置

本自动取号叫号装置既保留了原有的纸质票据取号和扬声器叫号的方式,同时还增加了手机取号以及手机信息提示和呼叫进行叫号的方式。该装置不仅可为听力不好老年人和听力有残障的人员带来便利,而且增加了手机取号功能,有效的提高了装置的用户体验。本装置的电气控制部分是基于单片机、无线蓝牙通信、通信芯片等主要器件开发的。     

电火工品训练测试装置的设计与实现

针对电火工品训练测试装置不能模拟各种电信号、外部环境的干扰及训练过程存在较高危险性等问题,设计研发了一种新型的火工品训练测试装置;该装置基于单片机最小系统,建立了选择测试火工品的型号、生成不同测试电阻值的标准电阻发生器和测试结果的输出装置等硬件模块;开发了信号转换、存储,指令发布,信息比较、记录与显示,以及实现对报警与示警系统的控制等软件模块;结果表明,该装置不仅能够模拟火工品的各种电信号和外部环境对其的干扰信号,还可以提高训练测试过程的安全性,具有重要的工程应用价值.     

基于LabVIEW的矿井排水装置故障监测系统的设计

针对传统的矿井排水装置中电动机易发生转子偏心、温度过高、振动过大、排水管道堵塞等问题,设计了一种基于LabVIEW的矿井排水装置故障监测系统。该系统能够通过LabVIEW及数据采集卡对排水装置的管道流量、管道压力、水泵真空度、电动机温度、电动机振动等数据进行采集,对振动信号等进行时域分析、幅值谱分析及故障诊断,从而实现对各种超限信号的有效预警。     

基于机器视觉的产品质量自动检测装置

本文介绍了一种基于机器视觉技术进行产品质量自动检测与控制的装置,分别阐述了装置的总体结构,视觉系统,PLC控制器,触摸屏及机械部分等主要设备的设计思路及功能。     

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.