基于虚拟现实的城市规划三维仿真设计系统

传统的规划设计CAD系统的三维功能很弱,难以进行空间关系分析和效果表达;而现有的城市仿真系统不具备规划设计能力,不能应用到规划设计过程中.结合CAD、3D、VR技术开发了一套规划仿真设计系统,,采用了基于专业对象的三维建模技术和虚拟现实技术,实现了二维设计过程中的规划设计对象的自动三维建模以及实时进行三维设计场景的虚拟呈现.结果表明,系统能极大地提高设计效率,能很好地进行空间关系分析,优化设计方案,并能通过虚拟场景以及系统输出的效果图和三维动画很好地表达设计意图,从而将城市规划设计技术从二维图纸阶段提升到三维仿真设计阶段.     

Agisoft Photoscan多视点3D建模技术在校园虚拟漫游中的应用

校园虚拟漫游系统场景创建过程中,针对虚拟地形和复杂景观建模所遇到的地形面积大、形态复杂、建模工作效率低等问题,笔者在VR校园部分模型构建中使用AgisoftPhotoscan多视点3D建模技术。相比传统的三维建模软件,AgisoftPhotoscan软件易上手、简单,数据收集快速、高效,能快速自动完成3D模型构建。以郑州工业应用技术学院所建立的校园虚拟漫游系统为例,介绍Agisoft Photoscan多视点三维建模技术的方法和流程。     

基于Web3D的虚拟场景漫游的设计与实现

介绍了Java3D与VR相结合的Web3D应用;采用了三层式的Client/Server结构和分布计算模型设计系统体系结构,提出了在Java3D中获取场景对象实例的方法,给出了在Java3D场景中实现虚拟场景中漫游的方法。采用Java3D实现与用户交互虚拟三维场景,并给出了部分实现细节。     

基于Web3D的虚拟场景漫游的设计与实现

介绍了Java3D与VR相结合的Web3D应用；采用了三层式的Client／Server结构和分布计算模型设计系统体系结构，提出了在Java3D中获取场景对象实例的方法，给出了在Java3D场景中实现虚拟场景中漫游的方法。采用Java3D实现与用户交互虚拟三维场景，并给出了部分实现细节。     

基于Java 3D的虚拟网络电力监控环境设计

虚拟现实技术（VR）是一项以计算机技术为主,利用计算机等设备构建一个三维虚拟世界,并通过人与虚拟世界的交互。实现人与虚拟世界融为一体的技术。本文介绍了应用Java 3D开发的虚拟现实技术,给出了实现该技术场景创建、动画设计和交互设计技术的部分关键代码。该设计具有开发三维视觉、实现用户网络交互的能力,并已经被运用到远程电力监测系统中。该技术也可以被应用到类似的监控系统的开发中。     

基于Arduino的虚拟现实交互系统实验案例设计

综合运用嵌入式、三维建模、虚拟现实等技术,提出一个软硬件结合的虚拟现实交互系统典型案例,实现虚拟场景与现实环境的实时交互控制。通过3DMAX和Unity3D软件设计虚拟现实交互场景,采用Arduino核心板搭建场景的控制模块,运用光敏电阻和湿度传感器实时获取环境信息并注入虚拟场景中,实现虚拟现实交互系统。     

基于三维输入设备的虚拟场景控制方法

在视景仿真中能够精确地控制虚拟场景中的对象模型是增强系统交互性的重要手段。该文分析了虚拟场景中三维模型对象和视点的控制方法，重点介绍了基于3D输入设备的对象控制方法。在详细分析3D输入没备SpaceBall4000的特点、工作原理和应用技术的基础上，在VC -Vega—Creator一体化建模仿真开发环境中基于该3D输入设备实现了虚拟场景中三维模型对象和视点的6自由度精确控制，提供了应用三维输入设备控制虚拟场景的一种方法。     

基于Web的虚拟展厅的设计与实现

当前的VR标准，可以描述一个被动的VR系统，即系统应用VR技术来实现一些预先设计的3D内容的可视化。然而，现实中的一个挑战在于构造主动VR应用，这种应用允许动态合成虚拟场景。为了能构造主动VR应用，该文结合目前工作描述了网络环境下虚拟展览厅系统，提出虚拟世界的数据库建模方法。文中阐述了该系统的用途和功能，给出了系统的结构模型等。     

全景式电力监控系统的建模与控制技术

应用JAVA 3D和虚拟技术开发一种能够实现对现场场景的虚拟全景展示和控制的电力监控系统,提出了在三维场景中UI对象与现场设备对象的并发控制方案,并给出了应用该方案设计出的三维电力监控系统的类结构和关键方法,该技术可为监控系统提供一种新的开发模型.     

基于VR技术的满族展馆虚拟系统设计与开发

结合VR技术设计并开发了满族展馆的虚拟信息系统。该系统同时使用了3D MAX建模软件、C#编程语言以及Unity开发平台。系统提供了系统登录、虚拟场景、音视频导入和文化展馆等功能。以三维可视化形式展现了满族中的剪纸文化、舞蹈文化、历史人物等信息，让体验者能从系统平台中充分感受到满族文化的丰富资源，实现满族文化数字化存储、保护和展览。     

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.