基于虚拟现实技术的电力安监仿真培训系统

电力安监培训是提高操作人员素质,保证电力系统安全、有效运行的重要手段之一,将虚拟现实技术引入其中,不但能节省教师人力资源和硬件设备资源而且增强了培训效果。本文介绍了基于虚拟现实技术开发的电力安监仿真培训系统中的三维建模、碰撞检测和交互行为控制等关键技术,并详细叙述了系统的架构和各模块的功能。系统的开发应用为电力作业人员的培训带来方便,有效提高了电力安全作业水平。     

基于虚拟现实技术的电力作业仿真培训系统

从技能和安全培训的角度出发,将电网物理特点和虚拟现实相结合,设计了电力安全作业仿真培训系统,介绍了系统包含的基于模型参数数据库的三维建模技术、基于电气连接特性的虚拟场景搭建技术、可视化交互技术、网络连接等关键技术,详细介绍了系统的虚拟培训、实景培训、电力安规培训3个大模块。系统的开发给电力企业培训带来了新的面貌,对于提升作业者技能水平、提高作业人员安全作业也大有裨益。     

基于LabView的城轨电力监控仿真系统开发

已投运的地铁电力监控系统关乎安全生产,无法进行实地培训。基于虚拟仪器软件LabView完成了城市轨道交通电力监控仿真系统的开发,为学员培训和专业学生的培养奠定了基础。给出了系统总体方案,并从终端IED、监控操作主画面、电量实时显示界面、实时数据库、后台逻辑控制操作等方面介绍了仿真系统的实现方法。     

石化装置三维仿真实训系统研究

针对石油化工企业员工培训安全培训和技能培训的需求，研究基于虚拟现实形式石化装置三维仿真实训技术，利用三维数字模型构建虚拟数字化工厂，开发基于虚拟现实的分布式三维仿真实训系统，具有石化装置工艺流程三维动态模拟、开/停工三维动态模拟、重点设备结构和原理三维模拟、三维交互式考核等功能，实现石化装置可视化、流程化、交互式的三维实时培训与考核。通过虚拟现实技术模拟真实的生产作业场景及生产过程，强化员工对石化装置及事故场景真实感受，从而整体提升石化安全和技能培训的效率和效果。     

电力系统通信故障排查仿真培训系统的设计与实现

电力系统的安全运行是电力生产过程中的重要环节,因而对检修维护人员具有较高的要求。先进的培训系统越来越被电力培训部门所重视。本文基于虚拟现实平台、C#语言和Visual Graph技术结合典型的通信故障类型,开发了一种电力系统通信故障排查仿真培训系统。文中介绍了该平台的技术要点,经过测试,实现了各项预期的功能。     

基于虚拟现实技术的油田生产仿真系统的设计与实现

介绍了虚拟现实技术应用于油田安全操作培训中的优越性,设计并开发了基于桌面系统的油田安全操作仿真系统.介绍了系统的软硬件环境,以抽油机安全操作仿真子系统为例,着重阐述了利用MultiGen Creator建模来形成三维场景,采用实例技术,细节层次技术和纹理映射技术优化场景的生成与显示,最后详细讨论了使用Visual C + +6.0和OpenGVS实现三维引擎的设计.     

火电站建设施工过程三维仿真系统的研究

虚拟现实技术已经在在电力培训方面得到广泛的应用,通常的发电站三维仿真系统中涉及的模型库庞大、设备模型特征数多,存在系统加载困难、运行不流畅等问题,利用模型轻量化技术、三维模型格式转化技术、系统轻量化技术,并结合虚拟现实技术和数据库挂接技术相结合的全新设计方法,对新建火电厂整个建设过程进行三维仿真模拟安装,包括每一个设备的详细安装细节直至整个电站全部建成进行了仿真,并结合设备结构的虚拟拆装仿真,成功地研发出火电站建设施工过程三维仿真系统.结果表明,本系统的设计方法对于其它大型工程实现三维仿真具有示范意义,该三维仿真系统模型加载时间明显缩短,系统运行流畅,并提高了三维仿真的视觉效果,进而提高了三维仿真系统在火电站设备建设施工方面培训的可用性,为电站建设施工企业带来可观的经济效益.     

基于220kV集控变电站的仿真培训系统

随着变电站集中监控运行管理模式的发展.为满足变电站集控中心运行人员培训需求,开发了一套基于220kV集控变电站的仿真培训系统.本系统采用纯软件模式实现.以自主开发的SDSS2000支撑环境为开发平台,使用模块化建模、三维虚拟现实等技术,实现了集控中心仿真培训和变电站仿真培训功能.该系统具有运行稳定、功能完善、操作简单、培训效果良好等特点.     

大型机械设备三维仿真训练系统的关键技术

大型机械设备具有体积庞大、价格昂贵、操作复杂、生产环境恶劣等特点,这些都给学习和操作此类设备带来了很多不便。针对这种实际情况,开发出以计算机仿真技术为核心大型机械设备三维仿真训练系统,可应用于对大型机械设备操作人员的培训。介绍了开发大型机械设备三维仿真训练系统应解决的关键问题,并以采用Java3D技术开发的锻压机三维仿真训练系统为例进行了验证。在应用中表明,大型机械设备三维仿真训练系统具有安全性、实用性、经济性等特点。     

基于VR的驾驶仿真及安全教育系统开发

针对全国道路交通事故高发现状及传统驾驶安全教育方式单一、培训效果差的缺点,基于虚拟现实技术（VR）,在引发交通事故人为因素理论基础上,开发驾驶仿真及安全教育系统。系统基于Unity3D引擎,构建了基于道路实景数据的虚拟场景,并联合SUMO实现了道路交通流仿真,通过VR技术仿真驾驶环境及驾驶行为;基于碰撞检测原理,建立了关卡违规触发机制,编码自定义屏幕空间渲染方式模拟驾驶员视觉效果,并构建了基于图像的交通事故现场三维全景,从认知、感知层面培训驾驶员安全驾驶。实用性测试结果表明,系统实现了不同道路场景、气象条件与交通状况下的驾驶模拟及安全培训,增强了使用者的学习兴趣,提高了使用者驾驶安全素养,具有较强的实用性。     

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。