基于GPIB接口总线的虚拟仪器

本文介绍了虚拟仪器的GPIB总线接口技术计算机通过GPIB接口卡控制带有GPIB总线接口的电流源和电压表，构成了Ⅰ～Ⅴ曲线虚拟仪器测试系统。在Labview环境下完成了虚拟仪器前面板以及后台框图程序的设计．与硬件系统一起完成虚拟仪器的测试任务。     

虚拟仪器软件Labview和数据采集

Labview系统是著名的虚拟仪器开发平台.和传统的编程语言C,Fortran等用于虚拟仪器的开发平台相比,Labview开发平台程序编写简单、灵活,易于掌握,用户不必花费大量的时间用于程序编写,可以将更多的精力投入到数据的分析、处理中.Labview开发平台使用图形语言,界面友好、直观,非常适合试验数据采集.文中阐述了Labview的开发环境,结合USB9100ms数据采集卡介绍了Labview如何进行数据采集.     

高温超导体R-T曲线虚拟仪器测试系统

本文采用基于Labview的虚拟仪器技术。设计完成了一套高温超导体R-T曲线虚拟仪器测试系统，通过IEEE488总线对电流源和纳伏表的控制．利用超导体在超导态时的零电阻特性，测量超导样品的超导电性．测量精度高，速度快，测试界面直观、友好。     

虚拟仪器软件Labview和数据采集

Labview系统是著名的虚拟仪器开发平台。和传统的编程语言C,Fortran等用于虚拟仪器的开发平台相比,Lab view开发平台程序编写简单、灵活,易于掌握,用户不必花费大量的时间用于程序编写,可以将更多的精力投入到数据的分析、处理中。Labview开发平台使用图形语言,界面友好、直观,非常适合试验数据采集。文中阐述了Labview的开发环境,结合USB9100ms数据采集卡介绍了Labview如何进行数据采集。     

基于VC供Labview调用的CAN卡驱动设计

CAN通信接口卡PCI-1680没有提供Labview可直接调用的驱动程序,这给虚拟仪器与现场总线的结合开发带来了不便.本文应用VC将PCI-1680的原始驱动程序封装成Labview兼容的驱动程序,并在Labview中实现对它的调用,建立了基于虚拟仪器与CAN总线的分布式监控系统.     

基于Labview的中医脉象采集实验系统

Labview是目前世界上最优秀的虚拟仪器软件,应用虚拟仪器技术充分利用Labview开发平台的强大功能,采用模块化的硬件产品,可方便、快速地构建具有多种功能的测试仪器。文章采用Labview软件开发了中医脉象采集实验系统,用于对脉象信号的实时数据采集、显示、分析、处理等,使学生能结合实际学习相关课程,培养学生的动手能力和学习相关课程的兴趣。     

基于虚拟仪器的湿度校准系统

介绍一种利用虚拟仪器软件开发环境Labview和图形化编程技术,采用EUROTHERM温度控制器和AKT25精密电桥构成的虚拟温度校准系统。     

基于神经网络的虚拟电流预报仪的设计

在电热镦粗过程中,采用神经网络和虚拟仪器相结合的方式,创建了加热电流预报的虚拟仪器。结果表明,该仪器实现了Labview和Matlab的良好接口,完成了电镦机中加热电流的高精度预报。并且可直接用于生产,为研制新一代智能电镦机打下基础。     

Labview在上海地铁直流机车主控系统综合测试技术中的应用

主控系统是上海地铁机车的关键控制设备,产自德国,引进时未购进其离线测试系统。维护一直依靠技术人员的经验判断和装配到机车上在专用试车线运行来进行,效率低且不可靠。为此本文实现了一种针对主控系统的测试技术,利用Labview建模并构成虚拟仪器测试平台,实现对主控系统的离线测试。     

基于VISA的串口通信程序设计

Labview是虚拟仪器、远程测控等领域的通用编程环境,其基于VISA的编程机理得到广泛应用,VISA支持的接口种类多、功能强大、技术成熟,是目前虚拟仪器及测控编程使用最为广泛的工具之一。串行口是仪表、数据采集、远程测控应用较多的接口,也是最为成熟的接口技术,目前在数据量不大的仪表控制、数据采集、远程测控等领域普遍使用。研究基于VISA的串口通信程序,对于开发串口仪表控制程序、数据采集、远程测控应用具有较通用的参考意义。     

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。