航空电子设备自动测试系统的软件架构设计

为检测和定位航空电子设备的故障,研究并设计了一种自动测试系统的软件架构;该架构包含了测试软件和测试数据库,测试数据库存储有测试被测设备的相关数据,测试软件将其作为输入,通过自动测试设备输送给被测设备,最终测试软件接收被测设备的输出并将其与测试数据库的预期数据相比较得出测试的结果;测试软件由手动测试模块、自动测试模块、系统自检测模块、测试记录读取和测试结果记录模块4个功能模块组成,自动测试和手动测试可以自由切换;该系统不仅能使用自动测试功能仿真被测设备的飞行环境,还可以使用手动测试功能具体定位分析故障,降低了设备的维护成本,缩短了维修时间。     

无线电台接收激励器自动测试系统硬件平台设计

本文以航空无线电台的一个部件接收激励器为例说明了自动测试系统硬件平台的设计方法。首先对无线电台自动测试系统硬件平台的结构进行了介绍。并通过对被测设备的原理分析、测试资源分配、某些性能指标测试的设计过程,以及对测试结果的分析说明了自动测试的方法和系统硬件平台的详细设计过程。     

航空机载设备自动测试系统简化编程设计

介绍快速开发自动测试系统的简化编程自动测试系统的设计方法;开发简化编程自动测试系统要实现测试系统软件与被测设备无关性;测试软件分为两部分:测控程序和测试模型;用测试软件检测某个被测设备时,由测控程序调用测试模型,对测试模型进行解释。测试模型和测控程序是相互独立的,测控程序负责测试模型的建立与解释,这就实现了测试系统软件与被测设备无关性,实现了测试模型的免编程开发;这样,在开发测试程序时,用户不需要编写任何软件,只需要根据测控程序提供的测试模型管理向导开发所需的测试模型;用免编程自动测试系统开发自动测试系统具有速度快、性价比高等特点,且开发的自动测试系统测试速度快、运行可靠、扩展性好。     

1553B总线在测试系统中的接口设计和实现

本文介绍了1553B数据总线的传输协议和工作方式，采用RS232串口作为通信握手方式。以自动测试系统作为总线控制器。被测目标板作为远程终端，通过软件寻址方式实现了对被测目标板的1553B双总线的自动测试．并给出了相应的硬件和软件的实现方法。     

某型机载武器控制系统自动测试仪的硬件设计

介绍了一种基于EC3—1541CLDNA3．5”全功能嵌入式工业主板为核心构成的嵌入式计算机自动测试系统硬件设计方案,阐述了自动检测仪的构成及工作原理;系统通过向机载武器控制系统施加指令并对其反馈信号进行自动采集、分析,实现了对被测对象的自动测试。     

雷达通用自动测试系统设计

为实现多型号雷达系统功能和性能信号的综合测试,以VXI和GPIB总线系统为基础,采用可更换接口适配器技术,完成雷达自动测试系统硬件设计,成功解决了被测单元数量多、待测组件接口不同和待测信号种类多等难题,实现了资源共享和测试系统通用的目标;采用模块化构型技术完成雷达自动测试软件设计,与自动测试系统硬件配合,实现雷达系统各要求项目的测试及对测试过程的控制;结果表明,雷达自动测试系统运行稳定,结果准确,为雷达使用过程中的维护、故障检测与诊断提供了有效的保障。     

自动测试系统中的信号开关设计

开关系统是整个自动测试系统的核心,开关系统在自动测试系统中实现测点与测试仪器间的连接,测试信号的路由切换以及被测单元与电源系统的连接.笔者从自动测试系统设计的角度重点讨论了开关系统的拓扑结构、开关选择以及自动测试系统中开关的布局与配置.     

基于机载设备自动测试系统的无源测试系统设计

在被测设备进行有源检测前,实施无源检测是及早发现设备问题,保证相关设备和人员安全性的有效手段之一,也是收集专家系统诊断参数的关键环节;设汁了一种基于机载设备自动测试系统的无源测试系统,在原机载设备自动测试系统的基础上,能够自动完成对被测设备的各激励端口的阻抗测试,收集相关数据并检查判断被测电路的异常情况,具有一定的实用价值,目前系统已经交付使用,并得到了用户的好评。     

微机控制时间继电器参数测试系统

本文介绍一个以APPLE—I兼容微机系统为测控核心的时间继电器参数自动测试系统的硬件、软件设计和工作原理。该系统只需输入被测试品的型号规格就能自动完成10个被测件的延时值及其重复动作误差、电源波动误差的同时测试,并进行数据统计、质量评判和结果打印。整个测试系统采用总线式结构,具有结构简单,便于维护,工作稳定可靠的优点。     

用PLD实现VXI自动测试系统测试接口设计

在基于VXI总线自动测试系统中，针对某大型电子装备多种被测组合综合测试问题，采用可编程逻辑器件（PLD）技术实现了灵活性强，可靠性高，成本低廉的VXI总线测试接口的设计，并通过测试信号的动态分配，动态上拉和动态预处理等方法，有效地解决 了测试平台对多种复杂被测对象的适配问题。     

远程心电监护系统的测试用例设计

文中以远程心电监护系统的测试为例,阐述了如何灵活采用等价类划分等多种黑盒测试技术来设计测试用例,同时兼具考虑测试用例的复用性。     

Application of TPB to punctuation usage in instant messaging

Instant messaging (IM) is being widely used in the workplace and personal life at an accelerated rate. In this paper, we empirically investigate an extension of TPB (Theory of Planned Behaviour) model to explain why individuals use punctuation in IM. Conceptually, we examine attitude and behavioural belief and their impacts on punctuation usage. Our research model was tested in an empirical study, which confirmed all of our hypotheses. This paper also explains why people prefer to use punctuation in IM and how the usage is moderated by the communication context.     

一种使用黑板模型实现的图象分割策略及在桥梁目标识别中的应用

本文首先提出了一种用从自然背景中分割出人工物体的方法，即写生成分割策略，并把它用于一类桥梁目标的识别研究，本文接着研究了使用黑板模型实现写生成分割策略的问题，并在黑板模型试验床ＣＰＥＳ上使用写生式分割实现了桥梁目标的识别，取得了良好的识别效果。     

Topological principal component analysis for face encoding and recognition

Principal component analysis (PCA)-like methods make use of an estimation of the covariances between sample variables. This estimation does not take into account their topological relationships. This paper proposes how to use these relationships in order to estimate the covariances in a more robust way. The new method topological principal component analysis (TPCA) is tested using both face encoding and recognition experiments showing how the generalization capabilities of PCA are improved.     

Exploring the influence of gender on the web usage via partial least squares

A growing body of research related to the role of gender in human interactions with information technology has emerged in recent years. In this paper we analyse the web acceptance and usage between males and females, incorporating intrinsic human factors. Partial least-squares (PLS), a second-generation multivariate analysis technique, was used to estimate the parameters of the proposed models. First, the scale psychometric characteristics were tested (validity and reliability). Second, the structural model was tested. The empirical results provided strong support for the hypotheses, demonstrating how males and females differ in their 'web acceptance and usage' processes; and highlighting the roles of flow, ease of use and usefulness in determining the actual use of the web between males and females.     

DETERMINISTIC AND N0NDETERMIN1STIC PROGRAMMING IN ROBOT SYSTEMS

The modem results of artificial intelligence research have provided new techniques useful foi the design of more sophisticated and advanced industrial robots. The use of computer integrated assembly systems is becoming more and more important in industrial applications

The purpose of this paper is to illustrate how with the use of an automatic problem solver it is possible to achieve the automatic emergency recovery from a failure occurring during the assembly process. An experimental computer program implementing the required problem solving activity has been written in MICROPLANNER and tested on a UNIVAC 1108 computer.     

Exploring the influence of gender on the web usage via partial least squares

A growing body of research related to the role of gender in human interactions with information technology has emerged in recent years. In this paper we analyse the web acceptance and usage between males and females, incorporating intrinsic human factors. Partial least-squares (PLS), a second-generation multivariate analysis technique, was used to estimate the parameters of the proposed models. First, the scale psychometric characteristics were tested (validity and reliability). Second, the structural model was tested. The empirical results provided strong support for the hypotheses, demonstrating how males and females differ in their ‘web acceptance and usage’ processes; and highlighting the roles of flow, ease of use and usefulness in determining the actual use of the web between males and females.     

An enhanced exact procedure for the absolute robust shortest path problem

The aim of this paper is to investigate the use of heuristic information to efficiently solve to optimality the robust shortest path problem. Starting from the exact algorithm proposed by Murty and Her, we describe how this algorithm can be enhanced by using heuristic rules and evaluation functions to guide the search. The efficiency of the proposed enhanced approach is tested over a range of random generated instances. Our computational results indicate that the use of heuristic criteria is able to speed up considerably the search and that the enhanced exact solution method outperforms the state‐of‐the‐art algorithm proposed by Murty and Her in most of the instances.     

Measuring task-specific perceptions of the world wide web

This paper describes the development of multi-item scales for measuring user perceptions of the ease-of-use and usefulness of the Web (hereafter web), incorporating a system task focus into the scales dimensional structure (e.g. how easy or useful the web is for information search, communication and or purchasing). The items are tested on 2077 web users recruited using a web survey, revealing four factors for each scale. Perceived ease-of-web use consists of learning, search and find, transaction and communication ease, and perceived web usefulness consists of communication, purchase, information search and acquisition, and access to quality products and information. A regression analysis on web usage frequency shows how easy users find it to learn how to use the web and how useful the web is for purchasing are the best predictors of how frequently they will use the web. These results highlight the importance of training users how to effectively use hypermedia-based systems like the web, and the design of systems that are easy to navigate and that provide advanced functionality for transactional activity.     

Measuring task-specific perceptions of the world wide web

This paper describes the development of multi-item scales for measuring user perceptions of the ease-of-use and usefulness of the Web (hereafter web), incorporating a system task focus into the scales dimensional structure (e.g. how easy or useful the web is for information search, communication and or purchasing). The items are tested on 2077 web users recruited using a web survey, revealing four factors for each scale. Perceived ease-of-web use consists of learning, search and find, transaction and communication ease, and perceived web usefulness consists of communication, purchase, information search and acquisition, and access to quality products and information. A regression analysis on web usage frequency shows how easy users find it to learn how to use the web and how useful the web is for purchasing are the best predictors of how frequently they will use the web. These results highlight the importance of training users how to effectively use hypermedia-based systems like the web, and the design of systems that are easy to navigate and that provide advanced functionality for transactional activity.