自控网系统建模工具的研究与开发

自控网系统是一类具有非线性关系和强大建模能力的Petri网。应用可视化编程平台Visual Studio.NET开发了自控网系统建模工具CyberNetTool。用户可在交互方式下建立自控网系统模型,并采用PNML格式文件来存储模型。构造了软件核心类,以实现界面控件管理和模型分析,详细描述了自控网系统各性质分析模块和动态仿真模块的实现算法。最后通过具体应用实例表明了该工具的正确性和实用性。     

智能楼宇三维展示系统的设计与实现

智能楼宇是楼宇发展的高级阶段。随着计算机、自动化控制等技术的发展和应用,以及对于节能环保等理念的要求,建筑物的智能化越来越流行。智能楼宇化已成为新世纪建筑的必要条件。而作为在楼宇自动化系统（BAS）的基础上更进一步地与通信网络系统、信息网络系统实现更高一层的建筑集成管理系统的智能楼宇管理系统（IBMS）,其设计与实现,尤其是对用户界面的设计将会给用户带来方便、直观的体验。该文对智能楼宇管理系统的3D展示界面技术进行了研究,叙述了智能楼宇物体信息展示的方案设计,并详细阐述了智能楼宇三维地图暨报警可视化的实现步骤。设计并实现了一个基于irrlicht引擎编写程序控制场景展示,3DS Max制作仿真模型的综合解决方案。主要包括三维仿真模型制作、用户界面设计、双显示屏展示系统设计、智能楼宇展示逻辑控制模块设计、静态物体信息展示模块设计和报警信息展示模块设计六个部分。在该文设计方案基础上,进行了系统实现和测试。还进行了一些优化权衡与选择,使用户对本系统的使用更加方便。在实现系统功能的同时,并考虑到了系统的可扩展性,为该系统今后与IBMS连接提供了方便。     

智能楼宇三维展示系统的设计与实现

智能楼宇是楼宇发展的高级阶段。随着计算机、自动化控制等技术的发展和应用,以及对于节能环保等理念的要求,建筑物的智能化越来越流行。智能楼宇化已成为新世纪建筑的必要条件。而作为在楼宇自动化系统(BAS)的基础上更进一步地与通信网络系统、信息网络系统实现更高一层的建筑集成管理系统的智能楼宇管理系统(IBMS),其设计与实现,尤其是对用户界面的设计将会给用户带来方便、直观的体验。该文对智能楼宇管理系统的3D展示界面技术进行了研究,叙述了智能楼宇物体信息展示的方案设计,并详细阐述了智能楼宇三维地图暨报警可视化的实现步骤。设计并实现了一个基于irrlicht引擎编写程序控制场景展示,3DS Max制作仿真模型的综合解决方案。主要包括三维仿真模型制作、用户界面设计、双显示屏展示系统设计、智能楼宇展示逻辑控制模块设计、静态物体信息展示模块设计和报警信息展示模块设计六个部分。在该文设计方案基础上,进行了系统实现和测试。还进行了一些优化权衡与选择,使用户对本系统的使用更加方便。在实现系统功能的同时,并考虑到了系统的可扩展性,为该系统今后与IBMS连接提供了方便。     

智能机器人仿真系统设计

智能机器人仿真系统,由于智能机器人受到自身多传感器信息融合和控制多样性等因素的影响,仿真系统设计主要都是以数学建模的形式化仿真为主,无法实现数学建模与场景实现协调仿真.为此,首先分析两轮移动机器人数学运动模型,然后设计与机器人控制系统相关的传感器数据采集分析、机器人智能自动控制和人工控制等模块,以实现机器人控制的真实场景.仿真系统利用LabVIEW设计控制界面,并结合Robotics工具包的建模、计算和控制功能.仿真结果表明设计的平台更适合教学和实验室研究,并可为实际的物理过程提供数据参考和决策建议.     

无人机飞行仿真系统多智能体建模分析与应用研究

无人机飞行仿真系统包含多个功能模块,采用多智能体(multi-Agent)技术研究无人机飞行仿真系统,分析并建立基于多智能体的飞行仿真系统的层次结构和运行机制,进而利用智能体对无人机仿真模型的各子模块模型运行过程进行建模,最后在JADE环境下建立了多智能体无人机飞行仿真系统的实例模型.这种方法可以通过仿真模型各子系统智能体之间的交互来完成无人机飞行仿真系统中飞行仿真的主要功能,从而满足无人机模拟训练系统的设计需求,在无人机模拟训练系统研究中具有广阔的应用前景.     

基于BIM+Cesium三维可视化校园系统的设计与实现

构建具备“三维可视化”、“信息化”、“数字化”特征的校园平台是智慧校园建设的基础点,现有校园平台大多使用传统建模工具融合C/S架构的GIS平台搭建,缺乏模型信息统一整合、趋于平面化且可视化水平较低、不具备跨平台等问题;BIM技术因其数据整合模式有效提高了建筑业信息化水平,文章结合BIM技术二三维信息整合及WebGIS-Cesium框架免插件、可跨平台的优点,以本校作为建模原型借助Revit软件建模及二次开发、文件流等技术,基于B/S架构开发兼备可视化、信息化及跨平台能力的校园平台,实现了地图显示模块、建筑物信息查询模块、空间GIS模块、地物对应查询模块及其子功能;通过测试,设计的系统工作可靠可行,满足校园平台需求。     

面向智慧楼宇的安防可视化管理系统的研究与设计

文章通过研究数字化智能安防在商业楼宇管理中的应用,设计了面向智慧楼宇的安防可视化管理系统,打通与门禁系统、访客系统、停车场管理系统、巡检系统、消防系统、梯控系统以及视频监控系统等安防业务子系统的数据通道,完成各业务系统数据的有效整合,构建数据融合服务能力,并以虚拟建筑信息模型为载体,将安防平台运行的各项关键数据进行综合数据看板展现,实现多维度日常运行监测与展示,为商业楼宇管理提供完善的安防支撑体系,提高了管理协作生产力,提升数字化服务能力。     

虚拟三维战场环境生成系统的设计与实现

虚拟战场环境是军事仿真应用的可视化平台.虚拟三维战场环境生成系统是能够通过可视化界面,根据军事仿真演练的要求,实时定制虚拟战场环境的工具.文章介绍了系统各模块的功能及实现方法,包括基于Creator的建模模块、基于Vega的模型驱动管理模块、基于粒子系统的特效和气象现象生成模块、地形编辑模块、虚拟战场环境中的视点切换和多通道生成模块以及人机交互模块.应用结果表明,该系统能产生符合要求的虚拟战场环境.     

基于BACnet/WS的IBMS系统的研究

主要研究基于BACnet／WS标准草案的智能楼宇管理系统的集成问题,突破IBMS系统中的BMS、OAS、CNS各个子系统的信息共享问题。通过BACnet／WS,能有效地实现智能楼宇不同厂商设备和系统间的互操作、数据交换的平台无关性及各系统集成的灵活性和可扩展性,克服系统实现中的困难,解决信息孤岛问题。     

基于HLA的直升机吊放声纳系统仿真平台研究

为解决直升机吊放声纳仿真系统的模型重用与仿真系统间的互操作问题,提出了基于高层体系结构(HLA)的直升机吊放声纳系统仿真平台设计方案.通过对直升机吊放声纳单机应召式反潜过程进行分析,以高层体系结构作为技术框架,结合仿真平台的特点和功能需求,对仿真平台进行了模块划分,给出了仿真平台的联邦构架、联邦信息流图以及联邦对象模型/仿真对象模型(FOM/SOM).仿真的结果表明,直升机吊放声纳联邦成员可以根据联邦其它成员的信息对目标进行探测与跟踪,达到实时交互仿真的效果.该系统的实现有利于反潜作战的研究.     

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。     

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。