基于VEE的电子测量自动化的应用

针对现在手动测试的局限性,介绍了利用测试技术搭建测试平台,实现对测试仪器的自动控制和数据采集。该自动测试系统是基于Agilent VEE软件平台和GPIB接口的应用实例,实现了对高精度时间间隔计数器SR620的初始化、测量模式选择、存储位置的选择及文件的命名、采数间隔控制、两路时频信号时差的数据采集和自动存储等。通过试验表明,该自动测试运行正常,已成功应用于时频信号的环境试验中。     

自动测试系统消息中间件的设计与实现

针对当前的自动测试系统只侧重于单个或同种类型武器性能的测试的现状,提出基于消息中间件的自动测试系统。阐述该消息中间件的内部体系结构以及该消息中间件中消息发布和订阅的流程,依托该消息中间件,自动测试系统能够屏蔽底层测试系统的复杂性与多样性,实现各种武器测试数据的跨平台通信。试验证明,基于该消息中间件的自动测试系统是一个综合测试平台,能够对各种武器协同作战性能进行综合测试。     

战术导弹自动测试系统体系结构的选择

从战术导弹自动测试系统研制的实际体验出发,论述了以ＶＸＩ总线为核心的体系结构是当前战术导弹自动测试系统的最佳选择,建议在国内该领域内大力推广。     

基于LabVIEW的控制器自动测试平台的设计

为了满足为多品种小批量生产的工业控制器快速开发自动测试系统的需要,对虚拟仪器技术与自动测试平台技术进行了研究;设计开发了基于LabVIEW的控制器自动测试平台;通过可扩展的可编程仪器和模块化、参数化的通用测试软件实现了针对具有不同I/O端口数量和特性的控制器自动测试系统的快速定制;实验及应用结果表明;该平台灵活可靠,使用该平台可以在1天以内完成新型控制器自动测试系统的硬件连接和软件定制,投入使用,具有一定的实用性和推广价值.     

战术导弹自动测试系统体系结构的选择

从战术导弹自动测试系统研制的实际体验出发,论述了以ＶＸＩ总线为核心的体系结构是当前战术导弹自动测试系统的最佳选择,建议在国内该领域内大力推广。     

基于动态可重构技术的装备测试系统研究

当前国内自动测试系统存在实时性差、测试资源冗余、成本高等问题,针对以上问题,提出了基于FPGA部分动态重构技术的自动测试系统,该系统基于FPGA动态可重构技术并结合嵌入式操作系统实现测试资源的动态管理,并开发了用于测试过程的硬件自动测试任务编程模型,提出了一种用于重构任务加载的ICAP控制器;该系统实现测试过程的并发执行,从而增强自动测试系统测试的实时性,进而提高测试的准确性与覆盖性。在验证试验中,将动态重构测试系统应用于自动测试实例中,试验结果表明硬件重构测试任务加载正常,各测试资源功能执行正确     

摩托车离合器综合性能测试系统的实现

针对摩托车离合器试验系统的研制,提出了一种利用计算机、单片机与可编程控制器通讯的测控方案;该试验台具有自动测试、自动控制、数据自动处理、自动打印与绘图等功能;试验结果表明,该方法不仅反应灵敏,成本低,测量精度高,而且检测与控制效果良好,满足了离合器实验系统的技术要求.     

面向对象的软件测试多Agent系统研究

软件测试多Agent系统(SoftwareTestMuiti-AgentSystem,STMAS)利用Agent具有的自治性、社交能力和智能性为软件系统的测试提供积极的帮助。该系统由用户界面Agent、测试用例选择和测试Agent、回归测试Agent三部分组成,这些Agent在面向对象的测试过程中,运用它们的智能规则进行软件自动测试。该系统有两个优点:由于自动测试,可以将测试者的干预减到最少;由于能进行没有冗余的、一致性的测试用例的智能选择,可以在提高故障检测有效性的同时缩短测试时间。     

信号调理模块的LXI自动测试系统设计

为满足自动测试系统课程实验的教学演示需要,以某信号调理模块为被测对象设计开发了一套基于LXI总线的多通道自动测试系统;该自动测试系统主要由激励信号源、信号调理模块、数据采集器以及设计的通道选择模块组成;设计的通道选择模块以ATmega328-PU单片机为核心,采用电平转换芯片CH340T实现与上位机间的通信,并且使用ULN2803驱动芯片实现对继电器开关的驱动控制;在软件设计中,使用“生产者—消费者”的架构进行控制软件的设计,采用面向对象的编程思想封装设备的操作函数,根据技术要求基于LabVIEW完成人机交互界面的开发;经实验测试表明,该自动测试系统可由计算机控制产生输入信号调理模块的激励信号,并具备对信号调理模块输出信号的采集、分析处理以及显示功能,同时可以进行测试通道选择切换,在实际应用中满足自动测试系统课程实验的教学演示需求.     

运算放大器自动测试系统的设计与应用

自动测试系统满足现代科研生产中对测试高速度和高精度的要求,其发展方向是标准化、模块化和系列化。介绍了一种针对集成运算放大器的自动测试设备,系统采用辅助放大器测试方法,该方法具有测试精度高,易于建立条件,通用性好,可以完成自动测试等优点。系统可以自动完成量程的切换,无需人工操作,对IC制造厂家及生产线具有很大使用价值。应用结果表明该系统测试速度快,运行稳定可靠。     

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。