数字视频压缩的大容量记录系统设计

介绍用ARM7微控制器LPC2214和MPEG-1压缩芯片SZ1510实现数字视频压缩记录的嵌入式系统。SZ1510在LPC2214的控制下,完成音频和视频数据的实时压缩和码流合成,LPC2214同时完成码流的传输和存储控制。利用LPC2214的I／O端口实现IDE接口的扩展,可直接驱动大容量硬盘和CF存储卡。     

基于ARM和μC/OS-Ⅱ的列车空调控制器设计

介绍了一种基于LPC2214ARM微处理器的新型列车空调控制器,论述移植实时操作系统μC／OS—Ⅱ的ARM微处理器控制列车空调机组的硬件电路和软件设计。     

基于ARM和μC/OS-II的列车空调控制器设计

介绍了一种基于LPC2214ARM微处理器的新型列车空调控制器,论述移植实时操作系统μC/OS-II的ARM微处理器控制列车空调机组的硬件电路和软件设计。     

针对ARM7处理器的uMon移植

介绍了引导监控--uMon的特点.给出了针对PHILIPS LPC2214[1]ARM7 TDMI处理器uMon的移植过程.     

点阵液晶模块与LPC2214的接口方式研究与编程

该文从应用角度叙述了常规的液晶显示模块YM19264C的结构特点和基本功能,并在YM19264C和ARM嵌入式微控制器LPC2214时序分析的基础上,讨论了ARM嵌入式微处理器LPC2214与点阵液晶显示模块组成的硬件电路的设计方法,设计了以I/O模拟总线连接液晶模块和外部存储器接口扩展液晶模块两种应用电路,而且对两种接口方式下的程序设计进行了分析,同时,给出了屏幕显示不正常时一个简单的解决办法。     

基于ARM7的发电机负序电流监测仪的设计与实现

论述了基于ARM7体系微控制器LPC2214的发电机负序电流监测仪SL-1的组成结构和具体实现。详细介绍了负序电流模拟运算电路和以LPC2214为核心的控制电路的工作原理,软件上给出了基于实时操作系统?C/OS-II和ZLG/IP软件包的负序电流监测任务和通讯任务的设计流程。SL-1在现场工作稳定可靠,监测效果良好。     

μC/OS-Ⅱ在LPC2214上的移植与应用

μC/OS-Ⅱ作为一种免费的、源码公开的实时嵌入式操作系统得到了越来越广泛的应用,文中详细介绍μC/OS-Ⅱ在ARM微处理器LPC2214上的移植过程,并构建了一个基于ARM的浮子式液位测量系统.     

基于ARM处理器的IAP设计及应用

以ARM微处理器LPC2214为平台,并结合串口实现了通过IAP(In-application Programming)进行固件升级的功能.针对不同的应用,提出了快速并且可靠的固件升级方式.     

基于DSP和ARM的光电跟踪系统伺服控制器设计及实现

针对光电跟踪系统伺服控制高精度、高实时性的要求,设计了一种基于TMS320F2812DSP和LPC2214ARM嵌入式微处理器的双CPU伺服控制器,利用LPC2214完成外设数据的采集和预处理、外设的管理、系统时序协调、人机接口等功能,DSP实现电机控制算法.详细介绍了控制器结构和主要硬件模块,并给出了软件设计流程.野外跟踪试验结果表明设计系统能够快速准确地跟踪预定运动目标,达到了系统的设计要求.     

基于ARM和uC/OS-Ⅱ的建筑火灾探测报警研究

本文构建了基于ARM和uC/OS-II操作系统的火灾探测单元设计研究,ARM的处理能力提高了系统的实时性,uC/OS-II的移植增强了系统的稳定性与扩展能力。ARM的丰富的片内外设和强大的处理能力及其低廉的价格,成为代替8位与16位处理器的极佳选择。并以一片具体的LPC2214为例,详细说明了这一系统中的关键模块的实现方案,对类似开发具有借鉴意义。     

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.