基于GSM远程心电自动监控系统的研究

介绍一种基于GSM网络实现远程心电自动监控系统的设计过程。该系统通过心电信号采集电路、单片机及接口电路、GSM通信模块电路以及GSM通信模块与上位机的连接来实现远程心电自动监控,利用标准的AT指令完成了心电采集数据短消息的发送、接收以及保存等功能,使监护仪成本大幅度下降,远程心电监护更易推广。具有广阔的应用前景。     

门禁系统视频监控电路设计

本文主要介绍了基于FPGA的视频监控主机系统硬件设计中的多路视频采集电路、USB接口电路、串口转换及通信电路、EEPROM电路等电路的设计,单片机和FPGA的并行使用,可以使数据传输更加协调,提高系统可靠性.该硬件系统能够实现视频信息的存储及传输,报警信息自动存储,USB信息拷贝,允许多路同时报警及远距离控制云台等功能,使得监控控制系统工作效率有了进一步的提高.     

现代温室环境多参数测控系统设计

介绍了对温室温度、湿度、光照、CO2浓度和土壤水分的检测与控制电路及原理图.这些电路既能独立使用,又能通过信息融合技术实现温室自动监控系统,提高了温室监控的自动化水平和应用的灵活性.     

微处理器监控电路MAX690A/MAX692A

MAX690A/MAX692A 具有掉电检测,备用电池自动切换和watchdog 定时三种功能,可由该芯片简单地组成微处理器监控系统,提高了电路的可靠性。本文详细介绍了其内部原理框图和功能电路。     

基于CAN总线的柴油发动机参数自动监测系统

开发了一种CAN总线和SAE J1939协议的柴油发动机运行参数自动监测系统,设计了微控制器与CAN总线连接电路、上位机通信电路设计和电源电路,实现了发动机参数的实时采集和监控,提高了发动运行的安全性.     

基于ZigBee和GPRS的温湿度远程监控系统的设计

为实现对多个监测区域进行实时的远程温湿度监控和自动调节,设计了一种Zig Bee无线传感网络和GPRS技术相结合的温湿度远程监控系统。阐述了系统的实现方案,给出了硬件电路构成及系统软件设计。该系统的通信信道均采用无线传输的方式,不需布线,安装、维护方便,有效实现了多区域温湿度的实时监控及远距离遥测。     

电压监控电路的研制

介绍了微处理器电压监控电路的原理及设计方法。微处理器监控电路在微处理器系统中有效减少了监控系统电源和电池电压所需电路结构的复杂性和数量。与那些分立的集成电路元件和分散的结构相比,这种监控电路芯片对改进系统的可靠性和精确度有重要的意义。以监控门限为4.4V的电路为例对电路设计进行简单的介绍。     

基于SOPC的数据链模拟器监控电路

根据数据链模拟器系统总体要求,设计、开发了基于SOPC的模拟器监控电路.介绍了监控电路总体方案,讨论了采用SOPC设计实现监控电路的优点和开发技术;应用基于SOPC实现的嵌入式处理器,设计、制作了板级监控电路,给出了电路的实验测试结果.     

基于CAN总线的煤矿风机监控系统设计

基于CAN总线的风机监控系统以DSP芯片作为核心控制部件,配合各种传感器和外部电路,自动监控煤矿井下通风的各项指标,实现风机开机、停机、风量调节、电机检测和综合保护的全面智能化,并采用CAN现场总线与地面调度室的主机通信,实现集中和远程监控.该系统实现了煤矿井下风机监控自动化,提高了井下安全生产的可靠性,避免因通风不良造成煤矿瓦斯爆炸的可能性.     

嵌入式远程监控系统的硬件设计与实现

随着电子技术与网络通信技术的飞速发展,嵌入式处理器逐渐在视频监控系统中得到了广泛的应用。本论文在简单介绍了嵌入式远程视频监控系统的特点,以及在对嵌入式处理器进行选型的基础上,重点分析探讨了嵌入式远程监控系统的硬件设计方案,给出了详细的系统层次框架设计,并对电源电路、A/D转换电路和网络通信电路进行了硬件设计,对于进一步提高嵌入式处理器在远程视频监控系统中的应用具有一定借鉴和指导意义。     

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.