虚拟现实技术在城市规划中的应用探究

在我国城市化迅速发展与扩张的形势下,运用传统二维GIS数据技术、图纸设计等进行城市规划,已不能满足城市设计与规划的要求.而基于3D模型的虚拟现实技术,可以在虚拟空间中完成对城市的立体化模拟,以构建出更加真实的城市网络架构.文章主要探讨虚拟现实技术在城市规划中的应用,通过分析虚拟现实技术与城市仿真等,提出虚拟现实技术在城市规划中的应用方案.     

城市规划中虚拟现实景观设计及其应用展望

以虚拟现实技术为核心的虚拟现实景观设计,将是开展城市规划设计的最佳辅助手段之一。文章结合城市虚拟现实景观系统的研制,分析了三维可视化城市虚拟现实景观系统的关键技术,并对虚拟现实景观在城市规划中的应用进行了展望。     

VRGIS技术在城市规划系统中的应用

本文通过阐述虚拟现实地理信息系统的概念和城市规划的特点,提出了将虚拟现实技术应用于传统城市规划GIS系统中的方法,最终实现了VR(虚拟现实)和GIS(地理信息系统)的融合.本文以实例系统表明,在城市规划GIS系统中加入虚拟现实技术,使城市规划效果的可视性大大增强,规划设计过程更加科学合理.     

基于增强现实的虚拟城市规划关键技术研究

增强现实是虚拟现实技术的重要分支,已经被成功的应用到众多领域.探讨了增强现实应用于虚拟城市规划的可行性,并给出了一种新颖的基于增强现实技术的城市规划方法.它可以满足城市规划对虚实交互、人机交互的要求,充分体现出增强现实技术在城市规划应用中的优势.介绍了系统结构与工作流程,着重分析了所采用的基于标识的虚实注册方法,并给出了运行结果.     

基于VegaPrime的城市规划仿真系统设计

文章介绍了基于优秀的视景仿真平台Vega Prime的虚拟现实技术,针对其在城市规划方向上的应用,设计了视景仿真的框架.并详细地说明了在VC 编程环境下,开发实现仿真应用中关键的二维导航、视点定位、模型切换、环境特效等功能的方法,为VegaPrime在城市规划方向上的应用打下良好基础.     

Creator和Vega Prime在数字城市规划中的应用

Creator和Vega Prime的虚拟现实视景仿真平台具有快速处理复杂仿真事件的能力.为了构建一个虚拟仿真漫游系统,阐述Creator和Vega Prime在数字城市规划设计中的应用,基于Creator和Vega Prime实施武汉光谷广场的视景仿真漫游.实验结果表明,虚拟现实技术能够将城市规划工作从传统的平面静态层次提升到立体的动态层次.     

虚拟现实技术在城市规划中的应用研究

当前我国城市规划和建筑设计方案审核过程中,主要是采用实体模型、静态渲染效果图或计算机三维动画来考察其视觉效果和与周围环境的协调关系;该文在分析了上述表现手段不足之处的基础上,提出了将虚拟现实技术应用于城市规划领域的优势及必要性,并以西南科技大学新区校园漫游系统的开发为实例研究了虚拟现实技术在校园规划中的具体应用。     

面向城市总体规划的虚拟现实技术应用研究

利用南京大学虚拟现实系统进行福建省福安市城区总体规划的应用研究，探询应用成套系统进行虚拟现实研究的方法和技术路线。该文是对虚拟现实环境在城市规划中的具体应用初步尝试。     

虚拟现实技术在工程管理中的应用

讨论了虚拟现实技术在工程管理中应用现状;提出了面向工程管理的虚拟现实系统构成;总结了虚拟现实技术在工程管理中的体现形式,为深入研究基于虚拟现实的工程管理应用提供了系统的理论基础。     

虚拟现实技术在城市三维地学模拟中的应用

虚拟现实技术强大的三维显示和交互能力,为解决地学领域中地上地下统一建模、空间分析等科技难题提供了新的研究手段和方向.以虚拟现实系统为平台,结合三维地质建模技术构建了虚拟城市地质环境,实现了地上与地下的集成建模,并对虚拟环境中二维导航、空间查询等交互功能进行了研究,从而为城市规划、建设和管理提供三维可视化决策平台,为建设"城市地质信息管理与服务系统"打下良好的基础.     

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     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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。