基于嵌入式Web服务器的水情测报系统的设计

为了便于在远程能够监测到水情,设计了一种基于ARM处理器的嵌入式Web服务器。通过以太网对水位、降雨量、流速传感器等进行远程监测和数据集中处理,提高远端机器的安全可靠性。给出了硬件设计原理框图,阐述了嵌入式TCP/IP协议栈的体系结构和相关接口。用户可通过远程终端访问嵌入式Web服务器及时获得更新数据。整个系统在实际应用中,取得了比较满意的效果。     

基于嵌入式Web服务器的电源屏监控系统

设计了一种实现远程检测控制电源设备目的的嵌入式系统。该监控系统通过A/D转换和GPIO接口测量电源设备参数进行数据采样。嵌入式系统作为Web服务器，通过Internet在电源设备和远程监控终端之间传送检测和控制信息。讨论的嵌入式系统以采用µC/OSII操作系统为特色，满足设备检测实时性的要求。讨论了嵌入式Web服务器的硬件与软件构架。     

基于uIP与AJAX的动态Web服务器设计

针对远程信息监测系统中数据的实时采集更新问题,将AJAX和CGI应用到嵌入式Web服务器的设计中,实现了服务器与浏览器之间的动态信息交互。本文首先分析了uIP协议栈,并在协议栈之上设计了Web服务器,然后利用CGI服务程序处理来自客户端的XMLHttpRequest对象请求,实现动态Web功能。现场实验结果表明,嵌入式Web服务器降低了服务器端的资源开销,提高了响应速度。     

基于Web技术的智能家居远程监控系统

以智能家居远程监控系统为例,设计了一种以Web技术为核心的远程监控系统解决方案,并实施建立在基于S3C2440微处理器和嵌入式Linux操作系统的软硬件平台上。在嵌入式Linux操作系统中构建了Web服务器和视频服务器。在此基础上使用CGI技术处理HTML表单,控制系统硬件,实现交互操作,完成用户认证、门窗控制、照明控制、温度监测、视频监控等功能。远程用户可以通过IE浏览器进行实时监视,并对监测系统设备实现管理。     

基于WSN的农业环境信息监测平台设计与应用研究

介绍了一种基于无线传感网络的农业环境信息监测,选择温度、湿度、土壤三参数作为农业环境信息的监测对象.传感设备的数据传输采用ZigBee无线通信技术以便于设置监测点,监测服务器设置的协议转换网关负责将无线数据转换成以太报文.转换网关也是一个嵌入式Web服务器,用户可以通过Internet访问以实现农业环境的远程监测.     

基于嵌入式WebServer的粮仓温湿度监测系统设计

在分析了目前国内粮仓监测系统中存在一些缺陷的基础上,提出了用ARM+μCLinux+Web服务器作为开发粮仓温湿度监测系统的软硬件平台的设计方案.在嵌入式系统中集成嵌入式Web服务器用户通过Internet网络可以实现远程监测嵌入式设备采集数据和工作状态,从而提高了监测效率,减低了监测成本.给出了在μCLinux操作系统下构建Boa服务器的具体步骤.该系统能够提供粮仓温湿度等相关环境参数的变化,为有关部门采取相应措施提供决策依据.     

基于MSP430的嵌入式环境信息监测系统

设计并实现了具有环境参数采集处理、远程网络传输等功能的嵌入式环境信息远程监测系统.系统由网络传输模块、环境信息采集模块、本地显示模块、单片机控制模块组成.单片机控制模块主要实现嵌入式Web服务和对环境信息数据处理.通过对系统的测试可以看到,这一设计实现了嵌入式Web服务、多机并行访问以及对十年历史监测数据的掉电存储功能.用户可通过网页浏览器访问被监测点的实时数据和报警情况.     

基于ARM的嵌入式Web Server的构建技术

在基于ARM7的嵌入式硬件平台上,研究在μCLinux操作系统的支持下,采用CGI（通用网关接口）技术和Socket技术构建嵌入式Web Server的方法和技术,该技术为实现基于嵌入式Web Server的电器设备的远程测控提供了一条有效的途径,管理员可以通过浏览器远程登录嵌入式Web服务器将用户信息下传到现场设备,现场设备的数据也能通过Web服务器传送到浏览器。     

基于嵌入式Web的远程数据监控系统研究

针对传统监控方案中PC监控服务器及C/S监控模式的弊端,设计了一种基于B/S模式,以嵌入式系统为服务器的远程监控解决方案。采用TI高性能处理器TMS320DM6446为硬件核心,嵌入式Web服务器为软件核心,综合嵌入式软硬件开发技术,开发了本监控系统。服务器端数据库接收存储下位机采集发送过来的各种现场数据,Web服务器通过CGI程序调用显示,同时可以发送控制指令。远程客户端通过Web实时监控现场数据。测试结果表明,该系统运行稳定,操作方便,达到了预期目的。     

基于嵌入式web服务器的远程数据采集系统的应用

针对嵌入式web服务器在数据采集和监控系统中的应用。本文将BOA移植到运行嵌入式Linux系统的ARM处理器上,建立嵌入式Web服务器,为用户提供基于HTTP协议的网络接入方式,Web服务器通过调用CGI程序实现网络数据采集,同时向发送各种指令,实现远程网络数据的实时采集与监控功能。通过实验测试验证,该设计方案可以很好地运用到远程网络数据的采集和监控系统中,具有非常实际的应用价值和参考作用。     

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.