基于SMS和Windows Mobile的手持式地理信息汇报系统①

介绍一种基于SMS和Windows Mobile的手持式地理信息汇报系统,探讨了一种利用目前现成的移动通信设施实现对带有GPS定位功能的手持智能设备持有者监控的系统。本系统利用目前流行的短信系统（SMS）作为数据传输手段,传送手持智能设备持有者的地理信息数据。使用SMS传输数据通信可靠,费用低廉,且覆盖范围广。     

基于社会性软件和复杂信息系统的LBS服务体系研究*

以往基于线性系统设计的LBS1.0系统割裂了系统与用户、用户与用户之间的联系,用户被动地接受系统提供的功能和消费系统提供的数据,对系统的改善和优化、数据的更新没有贡献。基于Mobile Web2.0的LBS2.0系统,引入了社会性软件和复杂信息系统的理论,利用用户与系统、用户与用户之间复杂的社会关系,使用户成为系统的一个节点,而不是一个端点,用户不再只是被动的数据消费者,同时是系统的设计者、数据的报道者。运用Web2.0的元素,通过大量用户自组织行为的涌现,利用集体的智慧和力量提高系统的自适应性,加强数据     

基于CORBA的通用无线分组业务远程监控系统

针对传统的基于GSM（Global System for Mobile Communications）的远程监控系统的效率和费用问题,采用当今流行的CORBA中间件技术,提出一种基于CORBA 的GPRS(General Packet Radio Service)远程监控系统的解决方案,对当前基于GPRS的远程监控系统进行了改进,是CORBA技术在GPRS远程监控系统中的一次成功实践。     

USB技术及其在图像数据传输中的应用

介绍了通用串行总线USB的结构、特性及原理 ,并对Cypress公司的EZ USB开发系统作了简要的介绍。利用EZ USB开发板AN2 1 3 1Q和配套软件 ,在硬件以及软件方面进行设计开发 ,实现了通过USB接口进行图像数据的传输。此外 ,还对数据传输系统的工作原理作了简要说明     

基于UPnP技术设计的多媒体云服务最佳播放设备智能选取系统

当前,许多媒体服务供应商利用云技术向使用者提供流媒体云服务。云服务虽然提升了流媒体业务按需访问的便捷性,但用户在使用流媒体云服务的同时操作的智能化程度较低。用户在流媒体文件选择、媒体设备选择及服务器连接方面缺乏智能手段。此外,系统不具有媒体流播放的断点支持功能。本文利用即插即用网络通信协议UPnP,设计了一套最佳播放设备的智能选取模型。本模型通过分析比较媒体文件元数据与播放设备元数据,自动选取最佳的播放设备。同时,本模型通过断点信息的保存来实现媒体文件二次播放的连续性。本模型为流媒体云服务的断点播放和播放设备智能优化选取,提供了一种有效的技术模型。     

数据库应用程序中通用动态查询实现方法研究

通用动态查询能够根据需要在程序运行过程中动态创建查询语句和查询命令，其实现路径有3种：利用用户数据字典、利用系统表与系统数据库和利用OLE DB数据供给程序等，文章对这3种方法的原理进行了详细研究，对其利弊进行了分析比较，并给出了具体实现。     

基于SOA的智能手机应用关键技术的研究

本文探讨了主流智能手机平台Symbian、BlackBerry、iPhone、Android以及Windows Mobile客户/服务器模式应用系统开发的主要关键技术,包括应用系统架构,各种主流智能手机操作系统处理XML数据的机制以及如何保证Web Service服务接口安全访问等。     

基于云平台的健康服务系统设计

随着人们对医疗系统的需求越来越高,故此设计了基于云平台的的健康服务系统,并且对本系统按照流程进行了需求分析、总体设计、详细设计.通过该系统可以实现血压、血糖的实时检测,将检测后仪器测得的数据发送到手机中.为了实现对测量后的海量数据实时存储,本系统基于云平台对数据进行存储.     

基于GPRS的远程数据采集传输系统

针对各种实时数据采集传输的需要,设计和实现基于通用分组无线业务(General Packet Radio Service,GPRS)网络的远程数据采集传输系统.该系统使用RS-232接口读取外部数据,如果GPRS网络或GSM(Global System for Mobile Communication)网络可用,则以GPRS通信或短信方式将数据发送到数据中心,否则将数据存储在外部存储器中.介绍该系统软件设计和实现中的关键技术,包括网络协议栈的实现和网络地址转换(Net Address Translation,NAT)设备的穿透.该系统已经应用到某车载监控终端系统和远程抄表系统中,且运行稳定高效.     

UMTS系统空中接口接入协议的安全缺陷分析

UMTS系统(Universal Mobile Telecommunication System,通用移动通信系统)采用了双向鉴权、信令完整性保护和数据加密等多种机制来保证用户通信的安全性。研究从挖掘协议安全缺陷出发,指出现有的UMTS系统通信协议中安全机制仍存在安全缺陷,以此为基础描述了一种能够有效通过系统的身份认证并阻止加密算法启动的中间人攻击方法,验证隐患的存在性。详细分析了导致现有安全缺陷的原因,给出了协议修改建议。     

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.