一种基于ARM的嵌入式Web服务器的研究与实现

为了实现将嵌入式设备接入Internet,并可通过Web浏览器对其进行远程访问、管理等操作的目的,文中以Sam-sung公司的S3C2440AL ARM9处理器作为硬件核心,以Linux操作系统下的Boa服务器作为软件平台,研究并实现了一个嵌入式Web服务器。给出了系统硬件平台结构的设计及组成,详细讨论了Linux操作系统和CGIC库的移植过程,对Boa服务器的建立以及运用CGI实现浏览器与嵌入式Web服务器之间的动态交互技术进行了研究。对该嵌入式Web服务器的实验测试结果表明其响应迅速,运行稳定,满足应用设计需求。     

基于ARM_Linux的嵌入式Web服务器的设计与实现

以Samsung公司的ARM9-2410X芯片为核心,以可裁减可移植的Linux为操作系统,设计了嵌入式Web服务器。给出了系统的硬件结构组成,介绍了Linux操作系统的裁减、配置和移植过程,分析了移植后Linux操作系统的文件结构,采用Linux下的Boa软件实现了嵌入式Web服务器,并探讨了动态网页的设计方法。     

嵌入式Web服务器的设计与实现

为解决远程访问、监测并控制嵌入式设备的需求,提出了基于Boa和CGI技术构建Web服务器的思想.在论证整体设计方案的基础上,以S3C2410处理器为硬件核心,以ARMLinux为操作系统平台,设计了嵌入式Web服务器,给出了系统的硬件结构组成.介绍了ARM Linux操作系统的移植过程,着重分析了Boa服务器的构建以及CGI应用扩展开发.最后对构建好的嵌入式Web服务器进行了运行测试,测试结果表明其运行稳定、控制方便、响应迅速,达到了预期的设计目的.     

基于Linux的嵌入式Web服务器设计与应用

阐述了基于Linux的嵌入式Web服务器的硬件软件体系结构,介绍了通用网关接口（CGI）技术的工作原理,利用Boa构建了基于Arm-Linux操作系统的嵌入式Web服务器,提出了交互式用户应用程序的设计方法,并利用通用网关接口成功实现了动态网页的实例。     

测控设备web网络服务器化研究

为实现利用Internet自带的客户端浏览器对现场设备进行远程监控的目的,设计并实施了新型web网络服务器化远程测控系统。系统中测控设备内嵌嵌入式web服务器,既能自身作为测控终端直接采集数据,又能通过CAN总线与其他测控器进行组网,实现类似网关的功能。硬件设计主要包括：嵌入式web服务器模块、测控器模块以及其接口模块设计与实施。软件设计主要选用Linux操作系统和嵌入式web服务器Boa实现CGI技术,设计添加CAN控制器驱动程序后完成IE浏览器与嵌入式web服务器以及测控器三者之间的通信。利用该系统进行温度测试,实验成功并能满足实时性,充分表明利用Internet浏览器、嵌入式web服务器组建并控制CAN网络的新型远程测控系统的先进性与可行性。     

基于ARM的嵌入式Web服务器的研究与实现

本文给出了一种嵌入式Web Server的设计方案.该方案对基于ARM和Linux的嵌入式Web Server系统的软硬件体系结构及构建Boa服务器的具体方法进行了详细的阐述,实现了浏览器与嵌入式系统之间的动态交互.这种嵌入式Web Server方案可以广泛地应用在远程监控、智能家电等领域,具有广泛的应用前景.     

基于Linux和S3c2410的嵌入式Web Server的研究与实现

论述了在基于嵌入式Linux操作系统和S3c2410的ARM处理器的嵌入式系统中Web Server(Boa网络服务器)的实现方法,通过CGI,用户可以动态地访问Web Server.采用目标板启动时自动运行Boa服务器的方法,用户可以方便地更改服务器的默认网页.这种嵌入式Web Server方案可以广泛地应用在远程监控、智能家居等应用领域,具有广泛的应用前景.     

嵌入式Linux下基于CGI的动态Web的实现

为在资源有限的嵌入式系统中有效地实现动态Web,文章提出了一种解决方案：在嵌入式Linux操作系统下,采用Boa作为wleb服务器,用C语言进行CGI程序设计,完成动态Web页面的实现。测试结果证明了该方案的正确性和有效性。     

TMS320DM6467的视频转码监控系统设计

提出基于嵌入式Web服务器Boa和CGI技术的网络通信思想,以VPC6467视频转码系统为硬件平台,基于嵌入式Linux操作系统的编译开发环境,设计了视频转码设备的监控系统.详述了虚拟共享内存的进程通信机制、HTML页面与服务器通信的CGI技术、Linux系统交叉编译环境的搭建,以及监控系统各个模块的设计思想.     

基于ARM-Linux与DS18B20的温度监测系统

基于ARM-Linux与DS18B20的温度监测系统采用三星公司生产的ARM9内核的S3C2410作为主控制器,数字温度传感器DS18B20作为温度检测元件,在ARM中移植了嵌入式Linux操作系统.首次在嵌入式Linux操作系统下使用数字温度传感器DS18B20,编写了DS18B20驱动程序.利用Boa在ARM上构建了嵌入式Web服务器,在远程监控端PC机上使用Web浏览器访问ARM平台,利用CGI程序,使机房温度能够在网页中动态显示,保证设备运行在合理的温度范围内,确保设备的运行效率和安全.     

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     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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。