基于Vega Prime的多场景仿真系统框架

介绍了基于MFC的Vega Prime视景仿真开发方法.分析了多场景仿真系统中不能正常进行场景切换的原因,提出了基于进程的场景切换方法.该方法将基于MFC的主控进程和基于MFC的Vega Prime仿真进程分离开来.主控进程通过创建/中止仿真进程的方式实现场景间切换;进程间采用内存映射文件和消息机制两种方式进行数据通讯,以传递Vega Prime环境初始化参数、仿真控制参数和场景属性数据,能够保证仿真系统的大数据量通讯要求和实时性要求.构建了基于Vega Prime的多场景仿真系统框架.     

基于MFC单文档定时器的Vega Prime应用程序设计

利用当前流行的虚拟现实开发工具Vega Prime,实现了基于MFC单文档程序框架下的定时器方式的Vega Prime应用程序设计,可以在此基础上开发具体的虚拟现实或视景仿真应用。     

MFC框架下基于Vega的视景驱动程序设计研究

介绍Vega视景开发软件的体系结构和在Windows平台上Vega可选择3种开发环境,根据实践详细地论述了基于MFC和Vega应用程序设计的方法,以及MFC框架下开发Vega视景驱动所遇到的问题及解决方法.该研究能够使开发者较容易的开发出基于MFC的Vega应用程序,并为其提供很好的借鉴和帮助.     

基于Vega Prime的视景仿真技术研究与应用

文章针对Vega Prime视景仿真技术相对于Vega的改进之处,设计了基于Vega Prime的视景仿真框架,重点研究了四个方面内容：运动模型和仿真对象的特点及两者之间的驱动关系、坐标系统和不同坐标系之间的转换机制、碰撞检测器的原理和碰撞检测的方法、用于模拟环境效果的”天历表模型”和模拟特殊效果的粒子系统等等。论文解决了基于Vega Prime的视景仿真技术涉及的诸多关键技术,为Vega Prime在实践中的有效应用打下良好基础。最后,论文还分析了基于Vega Prime的场景漫游过程,并把文章研究的相关理论应用到实践。     

虚拟座舱中虚拟仪表的设计与实现

随着计算机技术的快速发展,虚拟仿真技术在军事训练中得到了广泛的应用.本文着重研究了某型飞机虚拟地勤维护过程中机舱内相关虚拟仪表的实现方法,对GL Studio仪表建模的关键技术进行研究,运用GL Studio仪表仿真工具对飞机典型仪表进行开发,通过Vega Prime实现系统的视景驱动,讨论了在Vega Prime中如何调用虚拟仪表,解决了GL Studio模型向Vega Prime场景移植的难题,运用数据库技术完成了相关仪表的外部驱动,在实际项目开发中取得了良好的效果,具有较好的通用性.     

OpenGL在Vega Prime开发环境中的应用研究

分析了Vega Prime在视景仿真中相对于Vega的改进之处,讨论了基于Vega Prime的视景仿真框架,针对Vega Prime在视景仿真系统开发中对某些特效表达存在的困难,提出将OpenGL引入到Vega Prime中的方法,通过分析Vega Prime中的事件发布订阅机制,阐述了Vega Prime开发平台与OpenGL相结合的关键技术及开发方法,并将其应用于水下武器对抗视景仿真系统中的鱼雷自导声波显示和武器实体间通信链路可视化过程中,应用结果表明视觉效果逼真,弥补了Vega Prime在基本图形显示上的缺点,取得了良好的应用效果.     

Vega Prime结合OpenGL的导弹尾焰实时模拟

研究基于Vega Prime的导弹作战系统仿真实验,针对使用Vega Prime的粒子特效模拟高速飞行导弹尾焰会出现尾焰不连续而影响仿真可视化效果的问题,提出将Vega Prime与OpenGL相结合的方法.基于粒子系统基本原理,对导弹尾焰进行建模;依据Vega Prime的事件发布订阅机制将OpenGL引入到Vega Prime中.模拟的尾焰形态逼真,动感十足,满足仿真实时性与真实性要求,解决了Vega Prime模拟导弹尾焰存在缺陷的问题.     

火炮射击训练视景仿真系统设计与实现

关于火炮射击训练系统设计问题,针对火炮实装实弹训练存在高成本,高危险,受客观条件限制多等问题,提出利用视景仿真技术的火炮射击训练方法。在Creator建模工具上创建了火炮、炮弹、目标三维模型和射击场地形;依据火炮外弹道模型,设计开发了基于Vega Prime的火炮射击训练系统原型;针对Vega Prime界面设计不足,采用MFC开发了友好的人机操作界面。运行结果表明,系统能实时仿真火炮射击操作过程,满足火炮射击训练要求。     

Vega Prime之OpenGL文字显示程序设计

采用Vega Prime与OpenGL混合编程的方法,在Vega Prime虚拟场景中,实现用OpenGL代码显示文字和绘制十字丝。结合实例讨论了Vega Prime与OpenGL混合编程以及OpenGL显示文字的方法。     

Vega Prime的渲染功能及其仿真实现

介绍Vega Prime在适应性,高效性和可扩展性上的优势,并对视景仿真软件Vega与Vega Prime在场景图管理系统、结构和运行效率等方面进行了比较,通过一个实例展现Vega Prime在对大场景进行处理的过程和对场景环境的渲染效果.实验结果表明,利用Vega Prime开发视景仿真应用软件,在运行速度和场景逼真程度上,取得满意的效果.     

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.     

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。     

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.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

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.     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.