组件重用技术在企业级GIS系统构建中的应用研究

回顾了软件重用技术的发展过程,分析了基于组件的重用模型的特点,在此基础上以城市配电网GIS系统中实时数据显示组件的实现（借助ESRI公司的组件式GIS软件－MapObjects）为例,对企业级GIS系统构建过程中组件重用技术的运用进行了论述和尝试。     

组件式GIS开发的实践

虽然GIS软件在努力地追赶IT主流技术的发展，取得了许多有意义的进展，但相当一部分现代软件技术至今没有在GIS软件实现中得到有效的使用。GIS发展至今，虽然已经存在各种类型的GIS平台和应用软件，但要像搭积木一样组装成满足自己需求的GIS应用软件及实现各种GIS系统之间的集成仍然很困难。采用组件式软件方法开发组件式软件GIS是一种解决思路。详述了GIS开发的历史、组件技术、组件式GIS开发的基本原则及组件式GIS的缺点。     

VC环境下两种GIS组件开发比较

组件式地理信息系统是目前GIS软件技术发展的主流.分析了Maplnfo公司推出的MapX组件和美国环境系统研究所推出的MapObjects组件的特点和功能,介绍了在Visual C 环境下开发二者的差异,探讨了在控件初始化,图层操作、动态目标实时跟踪,通用地图工具等具体功能实现上的差别,并给出了实例说明.最后,总结了MapX与MapObjects各自的开发优势和缺陷.     

基于组件技术的张掖电子地图设计实现及关键技术研究

组件技术是当今软件技术发展的潮流,在地理信息系统(GIS)的应用领域也是如此。通过构建张掖电子地图的实例,介绍使用GIS开发组件MapObjects进行GIS应用开发的方法和高分辨率遥感影像在其中的应用,以及系统功能扩展中涉及的一些关键技术。结果表明,借助组件技术不仅可以快速建立功能完善的GIS应用系统,还能在此基础上方便地进行功能扩展。     

基于组件技术的地理信息系统应用研究

组件式地理信息系统是适应软件组件化潮流的新一代地理信息系统,本文阐述了基于ActiveX的GIS组件技术和MapObjects控件的运行机制,并介绍了基于组件技术的应用实例。     

组件式GIS系统的设计

组件式GIS系统是适应软件组件化潮流的新一代地理信息系统。本文基于组件技术和GIS技术．提出了一种组件式GIS系统的设计方案，并重点介绍了组件式GIS系统的核心一组件仓库的详细设计方法。     

基于MapX的卫星侦察态势显示系统的设计与实现

GIS软件技术正向着组件式和WebGIS方向发展，本文简要介绍了一种GIS组件(即MapX)，列举了用MapX和高级语言VB来开发卫星侦察态势显示GIS的实例，并给出了该系统的功能及其实现过程。     

基于MapObjects的GIS在公交查询系统中的应用研究

从公交信息管理现状出发,对如何利用GIS组件MapObjects开发公交查询系统进行了研究,针对传统换乘算法不能满足公交查询系统需要的现状,重点阐述了基于换乘次数最少的最优路径改进算法的基本思想.系统选用MapObjects作为GIS二次开发组件,通用语言C#作为开发语言,数据库采用SQLServer2000,实现了GIS软件的基本功能以及公交信息查询功能.     

基于MapObjects的组件式GIS技术应用研究

组件式地理信息系统已成为GIS技术发展的新趋势.本文阐述了组件式地理信息系统的技术基础和基本功能特点,并结合实例介绍了以PB为开发平台,基于MapObjects的组件式GIS开发的基本步骤和主要功能的实现方法.     

基于.NET平台和C#语言的MapObjects二次开发

阐述了微软的．NET平台以及C#语言的特点、优势,介绍了组件式GIS的概念、特点以及ESRI公司MapObjects组件的功能。在此基础上,分析了使用不同语言和开发工具对MapObjects进行开发的优缺点。最后举例说明了在．NET环境下如何使用C#语言对MapObjects进行二次开发。     

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.