基于嵌入式GIS的GPS野外数据采集系统关键技术实现

开发了一套基于嵌入式GIS技术的GPS-PDA野外数据采集系统.采用了多线程操作与事件同步相结合的模式解决GPS接收机与PDA之间的串口通信问题;讨论了WGS84(world geodetic system1984)坐标与GIS所使用坐标之间的转换方法;分析了嵌入式系统特点,设计了2级16格的嵌入式GIS网格数据结构,测试结果表明,该数据结构提高了GIS运行速度,解决了嵌入式系统内存不足的问题.通过实际工程应用验证了以上关键技术在系统中的可行性与可靠性.     

基于嵌入式操作系统的可移植GIS开发和应用研究

嵌入式计算机技术日臻完善，嵌入式设备被广泛的使用在各行各业当中。本文以组件化的嵌入式地理信息系统（GIS）研发（“863”项目）为背景，简要分析了移动设备的特点和嵌入式GIS系统设计的总体要求，在此基础上着重阐述COM技术和中间件技术在嵌入式GIS开发中的应用。     

基于移动的嵌入式GIS

分析了基于移动的嵌入式GIS的两种结构体系；离线体系和在线体系。讨论了其所涉及的移动计算、嵌入式技术、移动互联、移动定位等关键技术及嵌入式GIS的应用前景。最后，笔结合所开发的基于掌上电脑为地理售息系统软件Gis-Tool，介绍了基于移动的嵌入式GIS实现。     

可定制数据无线传输的嵌入式移动GIS设计

可定制数据无线传输的嵌入式地理信息系统(GIS)由被监控端硬件、数据中心服务器和监控端软件等组成。以NXP ARM系列微处理器为核心,结合通用无线分组业务（GPRS）通信网络,分析可定制数据无线传输的嵌入式GIS的设计过程,给出数据采集发送终端的硬件设计、固件开发、数据组织以及软件系统的设计流程、开发要点和实现过程。以汽车远程故障诊断与维修实验为例,实现了可定制数据无线传输的嵌入式移动GIS的功能,并具有较好的灵活性、可扩展性和可维护性。     

基于GPS/GIS集成理论的数据采集系统研究

文章介绍了GPS、GIS和GPS／GIS噪成理论及其在数据采集系统中的应用。应用面向对象的程序设计语言VC，开发了基于GPS／GIS集成理论的数据采集控制系统的应用软件，实现了地理信息系统空间数据和属性数据的获取和处理方法。文章证实了GPS／GIS集成应用的本质是提供特定层次的空间信息服务．并提出了一种有效的多学科协同配合研究的GPS／GIS集成的思路。     

嵌入式GIS组件研究

嵌入式GIS在导航、定位等业务中有广泛的应用前景.在基于组件的开发模式下,嵌入式GIS平台将具有更高的重用性.根据嵌入式组件思想,本文设计和实现了一个嵌入式GIS组件,该组件支持数据格式转换、空间数据显示与查询,并提供接口允许组件使用者调用.通过该组件,避免了在不同嵌入式GIS中重复开发GIS模块,提高了软件的复用性.实验证明了组件设计的正确性,适合在不同的嵌入式环境下应用.     

GPS信号在嵌入式GIS中的处理和应用

嵌入式GIS是指地理信息系统在嵌入式设备如PoketPC,PDA上的应用.嵌入式设备具有体积小、携带方便等优点,结合GPS的定位功能,使得嵌入式GIS在导游导航、数据采集等各个领域具有广泛的应用.本文主要介绍了如何在嵌入式GIS中接收GPS信号,以及如何对数据进行分析和处理,同时也介绍了一个在导游导航系统中应用的例子.其中对GPS信号的接收涉及到串口通讯的相关知识,对GPS数据的解析涉及到分析GPS信号的数据格式.这里主要分析了常见的NMEA-0813数据格式.     

基于uCLinux系统的图形界面研究与实现

将嵌入式Linux应用至目标设备，并开发出优秀的人机交互界面，是嵌入式开发的关键技术之一。探讨了嵌入式图形界面国内外研究现状，通过比较，提出了在uclinux系统下采用MiniGUI开发图形界面应用软件的一般性实现方案，并重点分析了移植MiniGUI到目标板的关键技术。并最终在农业数据采集设备上实现了图形界面。     

嵌入式GIS的研究与开发

通过分析近年来信息技术及地理信息系统（GIS）进展，探讨了在嵌入式技术迅速发展的今天，地理信息系统的发展趋势，提出了基于嵌入式技术的地理信息系统的发展方向，并构造了以WindowsCE为平台的嵌入式地理信息系统模型，在此基础上讨论了嵌入式地理信息系统的设计、开发原则及其应用前景。     

SQL Server CE在野外采集系统中的应用

SQL Server CE是应用于嵌入式移动设备的数据库产品。本文介绍了.NET Compact Framework下嵌入式移动数据库SQL Server CE的开发方法和SQLCE数据库在地下水资源调查野外采集系统中的应用,并利用Microsoft Sync Services for ADO.NET实现地下水资源调查野外数据采集系统中SQL Server CE 3.5与SQL Server 2005数据同步的解决方案。     

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。