嵌入式系统编程教学分析

通过volatile关键字的使用、嵌入式系统工程设置、嵌入式系统的数据结构设计、嵌入式系统算法设计四个方面的介绍,分析了嵌入式系统编程本身特有的属性和方法.通过嵌入式系统和台式机编程过程的比较,指出了嵌入式系统编程学习和台式机编程过程学习之间的区别.并根据各个编程环节的分析和嵌入式系统自身特点的研究,帮助学习者进一步理解嵌入式系统编程的特点.     

基于树莓派开发板的车辆识别系统设计

本设计着手于具有较大实用价值的“车牌识别”,用小巧的嵌入式开发板接入互联网,实现物联网技术下的车辆识别.该系统主要由嵌入式开发板、摄像头、台式机组成.嵌入式开发板采用当下流行的树莓派开发板,负责调用外置的摄像头模块采集车牌照片,配合在云端的台式机,将采集好的相片通过互联网上传至台式机,台式机处理传送来的车牌照片,并返回识别结果,从而完成整个识别过程.     

基于ARM9内核的IRQ异常中断编程机制的研究

嵌入式系统设计要求处理器能够快速的响应系统中的异常中断.以ARM920T为内核的S3C2410芯片作为硬件平台,通过设计键盘控制这个实例,提出一种通过两次查询异常中断向量表来实现IRQ异常中断的方法,并论述了这种中断的响应,调用以及返回过程.以此为基础,分析了ARM9内核在出现中断请求时的中断响应过程和编程机制,从而为嵌入式中断编程的学习和开发提供一个有效的解决方案.     

嵌入式操作系统（四）

本文介绍了嵌入式编程方面的问题。论述了在嵌入式编程中采用高级语言的必要性，并对C／C^ 和Java语言的基本功能和特点做了概述性的介绍。最后，介绍了嵌入式系统在开发过程中使用的各种开发工具平台。     

基于XML的嵌入式HTTP服务

Web浏览器已成为远程嵌入式系统进行监控的标准，越来越多的嵌入式系统将添加XML的远程HTTP服务，而支持Web功能的嵌入式处理器可以简化此类系统的设计。本文介绍了可扩展标记语言(XML）和嵌入式系统，分析嵌入式Web功能的特点．并描述采用XML开发嵌入式Web应用的设计要点和远程过程调用(XML—RPC等)。增加开发人员可用的选项范围。     

基于LINUX和CAN总线的工业嵌入式控制系统研究

介绍了嵌入式系统在工业控制中的技术要求和特点．对控制系统的实时性进行了阐述．给出了基于CAN总线的嵌入式工业实时控制系统设计的简例．并且对用户在再开发过程中需用的操作系统和应用软件编程的关键技术也进行了讨论。     

嵌入式系统的Internet接入实现

介绍了嵌入式Internet的概念和嵌入式系统的Internet接入实现方案，讲述了在微控制器（MUU)中实现嵌入式WebServer的方法。在分析嵌入式Web服务器有限状态机基础上，用原始套接字编程的方法实现了thin—TCP／IP协议，并且对嵌入式系统应用层协议进行了设计，简化的协议降低了系统硬件的要求。集成这两种协议的浏览器可访问嵌入式WebServer，并通过提交表格的方式向嵌入式WebServer输入控制信息，在工业自动化和消费电子行业有广泛应用前景。     

基于虚拟微处理器的嵌入式软件开发与系统验证环境

嵌入式系统设计过程中软件与硬件集成验证的滞后，已成为制约整个系统开发进程的重要因素．虚拟微处理器是指在嵌入式系统硬件原型形成之前构造的可仿真原型，通过对微处理器的仿真支持软件嵌入式软件开发．介绍了基于虚拟微处理器技术的嵌入式软件开发环境的设计和实现，利用该环境，设计者可在设计早期进行系统集成验证，减少设计错误并缩短设计周期．该环境已经在嵌入式系统开发过程中得到成功应用．     

AnyWhere——面向设备的编程模式

嵌入式系统的特点及其传统编程模式决定嵌入式系统研发人员必须是复合型人才。嵌入式系统把越来越多的通用电脑功能集成进来,同时自身功能也极大增强,这个矛盾就越来越突出。Anywhere——面向设备的编程模式较好地解决了这个矛盾。AnyWhere最大的特点是着眼于系统。系统中的所有嵌入式设备都使用AnyWhere兼容设备,整体效果最佳。面向设备的编程模式把所有通过网络连接的嵌入式系统和计算机作为一个整体考虑,研发人员只需要知道设备地址和设备内端口地址的分配,通过有限的几个函数操作设备。     

SQLite在嵌入式系统Wince中的应用

首先介绍了SQLite嵌入式数据库的结构和特点与选择必要性及应用到嵌入式系统Wince中的优点;其次介绍以ARM9与Wince6.0为平台,在Visual Studio 2008中开发的嵌入式数据库。通过研究DataGrid在Windows mobile中自动设置列宽的方法,本设计通过软件编程解决了基于Wince6.0的ARM9嵌入式设备中存在的问题,并分析通过DataGrid属性中TableStyles未改变列宽的原因。     

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。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。