基于SL811HS的嵌入式USB主机的实现

以S3C44BOX作为主控制器、SL811HS作为接口芯片构建USB主机的硬件设计方案及软件实现。该系统把USB主机引入嵌入式系统中,拓宽了USB的应用领域。     

Intel Xscale PXA255 USB主控制器的实现

本文介绍了Intel Xscale PXA255嵌入式处理器与USB主控制器ISP1160的硬件接口设计及软件设计，给出了一种嵌入式系统中USB主机控制器的实现方案。     

Linux下MPC8272的USB主控制器驱动设计与实现

从介绍USB协议标准以及USB主机端的系统结构入手,分析了在Linux操作系统下,USB设备主控制器和USB设备的驱动结构,并介绍了Motorola MPC8272处理器中USB主控制器功能及其特点,以此为基础设计和实现了USB主控制器驱动的功能模块,并在Linux操作系统下进行驱动开发以及进行测试验证.给出了一种在嵌入式系统中USB主机控制器驱动的实现方案,为同类的嵌入式USB主机控制器开发提供了借鉴.     

一种嵌入式USB主机功能模块设计与实现

基于LPC2292(ARM7)为CPU、Nucleus PLUS为实时操作系统的测控系统平台，分析了以ISP1161A1 USB主机控制芯片构建USB主机模块的设计与实现方法，包括USB主机功能模块设计方案、嵌入式USB主机的硬件设计思路、嵌入式USB主机驱动程序的设计方法以及设计方案的实现方式和过程。针对主机驱动程序的主要相关功能、面向通用USB设备驱动程序接口和主机控制器驱动程序的下层数据管理等关键问题，给出了解决方案和实现方法，提供了关键数据结构和简明注释。     

嵌入式计算机中USB主机控制器的研究与设计

分析嵌入式计算机中通用串行总线(USB)研究与开发的意义和难点，介绍嵌入式实时操作系统Windows CE的特点及应用，提出基于嵌入式计算机总线接口的USB主机控制器的设计方案并实现在Windows CE下的驱动。     

基于OHCI的嵌入式USB主机控制器接口实现

本文介绍了基于OHCI的USB主机系统的硬件核心主机控制器接口规范,分析USB协议栈的硬件层实现。结合了可重用的嵌入式USB主机系统研究课题,阐述主机控制器驱动程序开发方法,并列举了驱动程序内建的数据结构及接口函数的实现。完成了独立于操作系统的HCD开发,最后在S3C2410平台下进行了实验验证。     

基于NiosII的嵌入式USB主机设计与研究

提出了一种基于SoPC的嵌入式USB主机的设计方案,将NiosII软核处理器嵌入到FPGA,控制USB主控制器SL811HS实现USB的点对点的数据传输,体现了其设计的先进性,并通过一个实例,详细地说明了USB主机在信息安全领域的简单应用,测试结果表明该方案的实用性和有效性。     

基于NiosⅡ的嵌入式USB主机设计与研究

提出了一种基于SoPC的嵌入式USB主机的设计方案,将NiosⅡ软核处理器嵌入到FPGA,控制USB主控制器SL811HS实现USB的点对点的数据传输,体现了其设计的先进性,并通过一个实例,详细地说明了USB主机在信息安全领域的简单应用,测试结果表明该方案的实用性和有效性.     

基于TM1300的USB接口设计与实现

USB接口可分为USB主机和USB外设,总线采用主从工作模式,主机端控制数据传输,设备端只是被动地响应USB主机的访问请求.本文介绍了TM1300芯片,给出以USB主机控制器ISP1561为核心,在pSOS操作系统上实现的主机端接口设计方案,介绍了系统硬件设计,并分析了驱动程序的实现方法.     

基于SEP3203的嵌入式USB主机系统的设计

该文是以USB HOST技术为核心,基于SEP3203嵌入式微处理器,NUCLEUS PLUS实时操作系统为开发平台,利用主机控制芯片ISP1160来实现USB HOST的功能,支持USB HOST在嵌入式系统与U盘等兼容标准USB存储协议的存储设备间的通信。该文给出了硬件实现及对主机的系统软件体系结构的设计方法。为USB在嵌入式领域的应用提供了成功的应用实例。     

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.