CAE在仪表产品造型设计中一体化的应用

在分析仪表产品虚拟原型逼真设计思想的基础上,结合仪表产品造型设计系统的开发工作,利用3D软件I-DEAS作为开发平台,对CAE在仪表产品造型设计中的一体化技术进行了研究.借助计算机分析计算模拟实验方案,为快速实现基于虚拟原型逼真设计的仪表产品造型设计、提高产品设计质量、缩短设计周期,提供了快捷可行的方法.     

基于IP传感和网络接口的环境测控平台设计

论述基于IP通信技术的测控平台的特点及优势,介绍了一种基于IP传感器和网络接口设备的环境测控平台的设计方法、构成机制、各组成部分的作用和整个平台的运作过程,同时介绍在环境测控平台中的应用虚拟仪表技术的情况。     

基于VAPS的虚拟航空仪表显示系统

虚拟航空仪表系统是飞行模拟器的重要组成部分.结合虚拟仿真技术和飞行模拟器样机的技术要求,阐述了虚拟航空仪表的构建和虚拟仪表系统的实现方法.系统采用软件VAPS进行虚拟仪表的外形设计;采用VAPS和C++混合方式进行驱动显示;采用C编程语言实现虚拟航空仪表系统内部的通讯,网络通讯采用UDP/IP通讯形式.仿真结果证明,V...     

基于虚拟仪器的汽车仪表设计

以PC机、NI公司PCI-6221板卡、NI信号调理模块(应变、RTD、TC等)为硬件平台,以CSY-2000C传感器与测控技术实验台为测控对象,以LabVIEW8.2为软件开发平台,设计汽车虚拟数字化仪表模拟机,可以实现日期/时间、总里程、当前速度、转速、温度、油箱存油量等信息的显示,实现汽车仪表的校验和标定。     

基于GL Studio的航空虚拟仪表的设计与实现

为了实现航空电子仿真系统中各种仪表的快速建模,从GL Studio平台的技术特点出发,设计开发了一个由外部数据源控制的虚拟仪表。首先,用GL Studio设计虚拟仪表的图形界面;然后用VC++6.0开发一个基于MFC的仪表驱动数据编辑器;最后,编写一个管道通信接口将虚拟仪表与数据源进行连接,从而实现外部数据对虚拟仪表的控制。结果表明,该方法具有很好的实用性。     

虚拟技术在远程测控系统中的应用研究

随着网络技术的发展,测控系统逐渐出现了虚拟化、网络化应用的特点,该论文将虚拟技术应用于远程测控系统的设计,对基于虚拟技术构建的远程测控系统展开了研究,给出了整个远程测控系统的总体设计框架,并在此基础上对虚拟远程测控系统设计的关键技术展开了讨论,从数据库的访问方式和远程数据传输协议两个角度探讨了虚拟远程测控系统的实现,对于进一步提高虚拟技术在网络远程测控系统中的应用具有一定借鉴意义。     

基于Data Socket技术的网络化测控系统设计

计算机网络技术的发展为测控技术的网络化提供了条件,传统测控设备的发展趋势是实现测控智能化、网络化。美国NI公司的Data Socket技术基于TCP/IP协议并对其进行了高度封装,可以实现网上实时数据交换和共享。为此,基于Lab-VIEW平台,利用Data Socket技术设计出示波器远程测控网络实验系统,实现了测控仪器网络化。该系统已经成功应用于远程虚拟实验室,设计方案可以进一步推广应用。     

基于面向对象的工业模块化测控系统设计

近年来,基于计算机的测控系统开始应用于工业测控领域,随着面向对象技术在测控软件设计中的应用,大大提高了测控软件的开发效率.基于面向对象技术与软件复用技术的模块化测控软件设计方法为原有的测控软件提供了二次利用的可能性.基于Visual Basic.NET环境来实现模块化测控软件集成平台,完成了模块库建立、模块调度、测控任务管理的软件实现设计.     

基于HP VEE的虚拟测控系统的开发与应用

本文简要介绍了虚拟测控技术,重点讨论了图形化虚拟仪器开发软件HPVEE（Visual Engineering Environment）对VXI总线测控系统的应用软件开发,以VXI测控设备和计算机为硬件平台,设计开发了一套虚拟测控系统,并以示波器系统为例,详细的介绍了其设计流程,同时进行了相关实验,结果表明该系统测试准确。从软件的设计过程可以看出,HPVEE在虚拟测控系统的控制方面具有编程效率高、设计灵活等特点。     

FPGA的可重构测控系统应用设计

可重构器件技术的发展和测控系统结构模式的通用化是实现可重构测控系统的前提。通过对常规计算机测控系统存在的问题、结构模式和多任务特征以及可重构器件技术发展的分析,提出基于FPGA器件设计可重构测控系统平台的设想,对可重构测控系统设计原则、硬件结构单元设计和软件重构方法进行了分析,并给出应用于雷达信号实时侦测的基于CPCI总线的可重构测控系统硬件设计的实例。     

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.