基于ARM数控系统的PC/104总线设计

根据基于ARM处理器的数控系统的需要,通过时EP9315开发板的研究与实验,提出一种在ARM数控系统上实现PC/104总线的方案,用于读写运动控制卡.采用CPLD和Verilog HDL语言,描述了PC/104总线控制器的实现方法;介绍了在Linux操作系统下PC/104总线控制器的驱动程序的开发.实验结果表明基于ARM处理器的数控系统能够支持PC/104总线.能够使ARM处理器能够更广泛的应用于数控领域.     

基于Linux的嵌入式防火墙的设计与实现

本文设计了一种基于ARM9处理器的嵌入式防火墙网卡.在硬件上选择了带有AT91RM9200处理器的开发板FS9200,改善了嵌入式网卡硬件的实现环境;在软件上移植了嵌入式Linux操作系统,建立了文件系统,加载了IPSec模块,保证策略传输过程中的安全性,并在嵌入式Linux操作系统下加载网卡驱动模块、实现防火墙的过滤引擎模块.     

基于ARM处理器的PC／104模块设计

PC/104是一种专门为嵌入式应用而定义的总线。结合基于S3C2410 ARM处理器的PC/104总线嵌入式计算机的开发过程,介绍了利用ARM处理器开发PC/104处理模块的基本结构、总线技术以及外设接口,为ARM处理器在PC/104领域的应用提供了解决方案。     

基于ARM的GPS船舶智能交通终端的研究

本文采用ARM处理器和嵌入式Linux操作系统研制了GPS船舶智能交通终端.提出了总体设计方案.采用AT91RM9200处理器、CDMA模块和GPS模块设计了终端硬件,基于嵌入式Linux操作系统开发了终端软件,实现了对船舶运行状态的实时监控和与监控中心的无线数据传输,适用于海上智能交通领域.     

基于龙芯2C的嵌入式PC104 Plus处理器模块

介绍了基于国产芯片的嵌入式PC104 Plus处理器模块硬件系统的设计及实现。该模块以龙芯2C CPU为核心，符合PC104 Plus总线规范，针对系统中的BIOS设计，系统复位逻辑设计以及内存布线拓扑等关键技术给出了相应的解决方法。基于该方案的处理器模块已经研制成功，能够稳定地运行嵌入式Linux 操作系统，并可靠地应用于一航空视频记录仪中。     

基于ARM9的嵌入式系统设计及EPA设备实现的研究

针对EPA设备需要满足工业上实时性要求及与其他设备协调地工作等问题,研究了ARM微处理器和Linux操作系统的关键技术,设计以ARM微处理器为核心、Linux操作系统为软件平台的嵌入式系统.以AKM微处理器为核心的嵌入式系统应用于EPA设备能够满足工业实时性要求,并提供丰富的外围接口,为EPA设备的进一步开发奠定了基础.     

基于嵌入式Web服务器的视频监控系统设计

对嵌入式Internet的远程监控系统进行了研究,构建了一个基于ARM处理器和Linux操作系统的嵌入式B/S模式的远程视频监控系统.系统以嵌入式Linux和嵌入式微控制器S3C2440为核心平台,通过嵌入式平台建立的Web服务器将USB摄像头采集来的视频信号经过网络传输,在用户端PC可以接收到视频图像,并根据需要来控...     

基于ARM处理器的PC/104处理器模块的开发

PC/104是一种专门为嵌入式应用而定义的总线。本文介绍的是一种基于LPC2129ARM处理器的PC/104模块,介绍了利用ARM处理器开发PC/104处理模块的基本结构、总线技术、串行通信接口以及驱动程序,为ARM处理器在PC/104领域的应用提供了一种新的思路。     

基于ARM处理器的PC/104总线嵌入式计算机的设计

本文介绍了基于ARM处理器的PC/104总线嵌入式计算机的构成,对ARM实现PC/104总线嵌入式计算机技术进行了研究。最后,描述了用ARM处理器替代X86在工业控制领域应用的方法和具体设计。     

基于ARM的嵌入式网络收音机的设计

研究了一种基于ARM处理器的嵌入式网络收音机的设计方案。该系统以ARM处理器及其外围模块为硬件平台,以嵌入式Linux为操作系统,以Mplayer为网络播放软件,实现了嵌入式网络收音机的全部功能。以嵌入式技术来实现网络收音机,是一个设计技术的创新。该设计有较高的科研价值和极好的市场应用前景。     

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.