基于CORBA的WebGIS系统研究及开发

近年来，随着分布对象技术和网络技术的不断发展，分布对象WebGIS已逐渐成为WebGIS开发的一个热点。在众多的分布对象技术中，CORBA以其优良的特性，在构建异构环境下的WebGIS中显示出明显优势。本论述了使用分布对象技术构建WebGIS的必要性，并通过分析各分布对象技术的优劣，提出了基于CORBA技术的WebGIS系统。最后。结合该系统着重剖析了基于CORBA规范的分布对象WebGIS的运行框架、系统优势和开发手段。     

基于WebGIS的交通基本建设管理信息系统

阐述了WebGIS的概念、特点和开发策略，提出了基于WebGIS的交通信息系统设计与开发思路。介绍了可用于交通领域的WebGIS平台－WebGIS-T 1.0，在其基础上实现了一个基于WebGIS的交通基本建设管理信息系统。     

WebGIS开发技术及SpringMVC安防系统构建

分析了GIS开发模式、WebGIS技术优势，探讨了MapXtrerne Java的基本组成和工作原理。在此基础上，深入研究了基于MapXtreme Java的四种WebGIS开发技术。以城市安防报警监控WebGIS系统为背景，提出了基于SpfingMVC框架的WebGIS具体实现。该技术架构可以广泛应用于各类企业级WebGIS系统构建。     

基于XML的WebGIS计算模型

分析了目前WebGIS的实现技术,以及WebGIS中广泛使用的HTML的局限性,探讨XML技术及其在WebGIS中的应用,把XML应用于WebGIS中,研究基于XML的WebGIS的计算模型和实现方法。     

基于Java的WebGIS系统的研究与开发

WebGIS是一种基于因特网／内联网的技术标准和通信协议和网络化处理信息系统。实现WebGIS系统的方法有多种。本文主要介绍用Java语言建立WebGIS的技术特点和设计方法，并以实例说明了WebGIS在输变电地理信息系统中的应用。     

基于构件技术的WebGIS的研究及其EJB实现

本文在分析了WebGIS现存开发方式的缺陷后，介绍了基于构件的WebGIS的概念和它的优点，并以ArcIMS地图服务平台为例，在对地图通用功能进行分析后，结合EJB构件技术给出了一个对外提供WebGIS二次开发服务的通用功能构件层。     

基于MapXtreme的WebGIS中间件的研究与应用

提出了在MapXtreme基础上进行WebGIS中间件开发的设计方法。WebGIS中间件屏蔽了底层操作系统的复杂性，使程序开发人员面对一个简单而统一的开发环境，减少程序设计的复杂性。将WebGIS中间件技术应用于油田地质图的动态生成、发布中，解决了油田分布式多数据源的访问、管理和地质图的动态生成、发布以及地质对象信息查询等问题。     

基于WebGIS的电网运行监控技术及其实现

本文提出了一种WebGIS中监控电网实时运行的解决方案。介绍了基于WebGIS的电网运行监控系统构成原理，对WebGIS中实时数据的获取、显示以及页面实时刷新等关键技术进行了深入分析，并详细阐述了关键技术的实现方法。     

基于Web服务的WebGIS平台-SOG的设计与实现

针对目前WebGIS系统二次开发中存在的难点和WebGIS系统之间存在的互操作性问题,通过分析WebService 与SOAP协议的结构,在WebGIS开发中应用先进的SOAP协议与组件技术,设计并实现了基于分布式多层架构的WebGIS系统,解决了目前WebGIS系统之间存在的互操作问题及二次开发时存在的问题.     

B/S模式下基于临时图层的WebGIS功能扩展

B/S模式下的WebGIS技术仍不成熟，其应用受到很大限制，但对此的功能需求却在不断增长。针对这种现状，该文通过分析B/S模式下WebGIS的体系结构，提出了利用临时图层技术扩展WebGIS功能的方法。介绍了如何利用临时图层技术扩展WebGIS的功能，实现采油厂生产管理业务，使之与实际应用结合得更紧密，在一定程度上突破WebGIS的应用局限，以满足用户需求，为其他应用提供参考。     

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.