基于短信服务的移动VPN应用系统

文中给出了一个基于移动公网短信增值服务的无线接入VPN应用系统的解决方案，文中介绍了该解决方案的整体架构，描述了通过短信服务实现VPN应用系统无线接入的实现原理，绘出该方案应用层自定义协议“ADTP”的结构和协议基本数据元定义，对其数据通信安全和移动终端接入论证的实现策略做了相应说明。     

ReFLEX-XMODEM模块在汽车远程安全控制系统中的应用

介绍了一种无线通讯技术(ReFLEXTM技术)在汽车无线远程安全控制系统中的应用。该系统主要通过ReFLEX-XMODEM高速无线寻呼模块和带EEPROM的可在线编程的高速CPU解码和检测装在汽车内的单线总线自动身份识别芯片,并控制汽车引擎终端实现安全启动。因此,该系统是一种有效的汽车防盗系统。     

宽带无线IP系统移动终端的安全接入技术

针对目前宽带无线IP系统移动终端的接入现状，本文基于公钥密码机制，提出了一种宽带无线IP系统移动终端的安全接入技术。该技术是无线通信技术、网络技术及密码技术相结合的产物，它不仅解决了目前无线IP系统中移动终端没有接入控制与非安全接入问题，而且完成了移动终端的接入控制，实现了其通信保密功能。持有证书的移动终端既可以本地接入，也可以异地登录，从而保障了其通信漫游功能。理论分析与实验结果均表明，该方案不仅切实可行，而且相比目前技术具有无可比拟的安全性。     

基于指纹认证的行车安全系统设计

汽车应用的普及带来汽车安全的隐患,基于指纹认证的行车安全系统可实现对驾驶员信息认证、汽车行驶过程、行驶状况、道路状况和交通信息的实时监控,有效预防汽车行驶的安全问题。详细阐述行车安全系统的功能、系统模块设计、硬件系统设计和软件系统设计,分析汽车终端模块的硬件结构和软件功能实现方法,给出基于VC＋＋的汽车终端功能实现的数据类。通过测试,系统能实时、准确地获取汽车行驶的动态数据,有效实现汽车安全管理。     

基于物联网的罐区火灾安全监测报警系统的设计

油库火灾事故在油库事故中占比最高,为了保障油库罐区安全,本文介绍一个基于物联网的火灾安全监测报警系统,叙述系统设计原理和实现方法。该系统采用S3C6410A核心板作为监测控制器,控制中心协调器连接路由节点和终端节点组成无线物联网,然后通过该无线网向终端节点发送采集命令,无线传输采集数据;监测控制器对采集数据进行数据存储,处理,如异常自动联动报警。监测控制器提供嵌入式Web服务,能独立地提供远程WEB监测服务。火灾安全监测报警系统提高了罐区控制的安全性、可靠性及自动化水平。     

基于RFID的广义物流中的移动智能终端设计

将RFID技术和普适计算相结合，应用于广义物流，研究该广义物流的系统框架，并着重描述框架中的终端技术。以博物馆导游系统为背景。终端需实现主动服务、被动服务、RFID读写命令等功能，具备无线局域网、无线实时语音播放、集成RFID读写器等模块。以ARM处理器和嵌入式Linux技术为基础．实现了终端的软硬件设计。终端的设计完成为该系统的搭建迈出了重要的一步。     

基于无线通信的校园指纹通系统设计与实现

设计了基于无线通信的校园指纹通系统。该系统由无线式指纹终端、服务器和Web服务网站等组成。系统利用无线式指纹终端采集用户指纹,并通过无线通信方式传输到服务器,在服务器端实现指纹匹配和相关的事务处理。经实验测试,该系统使用方便,安全可靠。     

无线局域网安全分析终端的设计与实现

无线局域网(WLAN)的安全机制是非常脆弱的,因此需要安全分析系统管理WLAN。设计实现了WLAN安全分析系统中的基于嵌入式处理器PowerPC和Linux操作系统的分布式终端。该终端实现了支持安全分析系统中的被动分析和主动分析的接口模块。WLAN数据包的成功捕获和定制发送为接口模块的功能实现提供了依据。     

基于射频通信技术的汽车故障诊断系统

为满足汽车快速的诊断修理要求,开发了基于射频通信技术的汽车故障诊断系统.系统主要对汽车发动机的实时读取的故障码加以无线射频传输.采用了射频技术的PTR8000模块设计了系统硬件,并开发了数据采集软件和终端显示软件,实现了对运行中的汽车进行故障码的实时跟踪和快速维修.     

无线局域网中的入侵检测研究与设计

介绍了一种适用于无线局域网的入侵检测方案。该方案分别实现了无线局域网的主机安全检测和网络安全检测。针对无线局域网的特点,该方案把基于嵌入式的入侵检测系统嵌入到移动终端作为基于主机的入侵检测系统,把基于移动Agent的入侵检测系统安装到MSS(Mobile Support Station,支持移动计算的固定站点)上用于实现基于网络的入侵检测。该入侵检测方案能有效消除无线局域网的来自主机与网络两方面的安全威胁。     

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.