ARINC653分区操作系统在综合模块化航空电子系统中的应用

航空电子系统的综合模块化发展对软件系统提出了更高的要求.介绍了基于ARINC653软件规范的分区操作系统的原理、综合模块化航电系统的特点和需求,以该系统中显控子系统软件的设计为例,说明了ARINC653分区操作系统在综合模块化航电系统中的应用价值.     

ASAAC标准体系架构述评

联合标准化航电系统架构协会(ASAAC)定义了先进航空电子体系结构(A3)的开放式标准、概念和指导原则,该标准和指导原则主要用于2005年以后新的飞机项目和现有飞机的升级计划。ASAAC标准定义了综合模块化航空电子系统(IMA),该标准是为了建立一个统一的IMA体系结构。IMA由通用的组件构成,这些组件可以在单独的标准中定义和说明。针对ASAAC标准定义的航电系统顶层体系架构,概述了该架构的一些设计指导原则,同时简要介绍了IMA架构。     

综合模块化航电系统驻留功能适航审定要求分析

综合模块化航电系统以功能分区的形式在资源共享平台上综合了多种航电功能,系统功能与硬件平台不再具有唯一对应性,给适航审定技术带来了困难。首先分析了综合模块化航电系统的特点和民机产品的适航方式,然后依据局方的相关技术标准文件,给出了综合模块化航电系统驻留功能的适航需求分析,最后总结了审定要素和评审要求分析。相关研究成果有助于解决功能-硬件分离的航电产品的取证问题,是对现有综合模块化航电系统审定体系的有效补充。     

大型民用特种飞机平台航电系统架构分析

通过分析大型民用特种飞机使用场景，将航电系统进一步划分为平台航电系统和任务航电系统，提出了“大分布、小综合”的平台航电系统架构设计理念。该设计理念采用分布式综合模块化架构，对平台航电系统的各分系统进行功能区域性综合。此外，还分析了平台航电系统架构的验证方法、适航取证思路等方面内容，可为后续大型民用特种飞机的平台航电系统设计提供借鉴和参考。     

基于元模型的复杂航电系统建模

针对当前综合模块化航空电子系统（IMA）开发中存在的问题,提出了一种基于元模 型的航电系统建模方法。该方法充分利用了基于特征的元建模理论,通过合理划分和描述构 成整体的各部分及其相互关系,构建航电系统领域的元模型。通过建模工具将元模型解释成 面向领域的建模语言,在此基础上可构建具体的航电系统模型。以航电系统为实施对象进行 了验证,结果表明该方法可显著提高航电系统的开发效率。     

模块化综合系统的重构设计

航空电子的模块化综合是提升系统综合性能的重要途径之一,重构是模块化综合系统的关键技术.对模块化综合系统的两重构形态(故障重构和功能重构)进行了详细阐述,基于模块化综合系统的体系结构,以面向对象的系统分析方法,提出了一种重构的顶层设计、故障检测和隔离、重构逻辑的设计方法,并对重构的关键要素进行了系统性探讨.     

综合化信号与信息处理平台设计与实现

为解决大规模分布式异构实时处理平台在航空电子模块化综合条件下的体系结构问题,在分析联合标准化航电系统架构特点的基础上,提出一种基于串行RapidIO硬总线和虚通道软总线互连的开放式系统架构,并完成一套基于该架构的综合化信号与信息处理机,实现了真正意义上的芯片级互连、低延时、多节点、可扩展、可重构的航空电子综合化应用平台。     

综合模块化航空电子系统的BIT防虚警设计

针对现代综合模块化航电系统的机内测试（Built-in-Test，BIT）虚警问题，深入分析了其I类和II类BIT虚警的产生原因及机理。结合航电系统综合化、模块化的架构特点及其复杂性、层次性、相关性和不确定性的故障特征，从模块和系统两个层次提出了BIT虚警的技术解决措施以及全寿命周期需采取的设计手段。重点给出了一种基于模型的系统级BIT虚警识别算法，能依据测试性建模输出的D矩阵，分析测试之间相悖或相互佐证关系，识别虚警和确认真实的故障指示。最后，结合综合航电超短波功能进行了案例验证。     

通用航电总线驱动软件设计与应用

针对现有航电仿真系统中总线驱动软件存在的功能单一、可扩展性差、重复开发严重等问题，结合航电仿真系统数据驱动特点，提出了一种扩展便捷、配置灵活、运行稳定的通用航空总线驱动仿真软件的设计与实现方案。该方案基于面向对象设计思想，采用分层式软件架构与模块化设计，利用可扩展标记语言(XML)格式的灵活配置特性和发布/订阅式数据分发网络的动态性及传输优势进行设计，保证了方案的通用性和灵活性，提高了软件的健壮性和可重用性。基于该方案设计的通用总线驱动软件可显著提高航电仿真场景中多总线数据分发的效率。     

基于模型的综合模块化航电系统测试性设计方法

针对综合模块化航电系统对测试性提出的更高要求及其工程实践中存在的典型问题，定义了一种分布-集中式的系统测试诊断架构，以适应其体系架构的特点和生产配套关系的变化；提出了一种基于模型的系统测试性设计方法和流程，以测试性模型为驱动指导航电系统的测试性方案设计、评估与优化过程，取代传统的基于指标的测试性设计方法。在某机载综合射频系统上开展了方法应用，成功解决了该系统综合化以后测试诊断架构设计与测试性分配的非线性问题。     

综合模块化航电系统适航审定要求分析

综合模块化航电系统(IMA)的深度耦合、资源共享、强健分区等特性给传统的针对联合式航电系统的审定方法带来了挑战。分析了适用于IMA系统审定的文件体系,给出了IMA系统符合性验证过程的典型活动,最后总结了针对IMA系统各审定阶段的审定要素和评审要求。本研究可为我国解决IMA系统的审定问题提供理论基础。     

综合模块化航电系统失效模型分析

通过分析对比联合式航电系统和综合模块化航电系统(IMA)的体系结构特征,针对系统的资源紧耦合特性建立了IMA系统功能层次化失效模型。按照失效模型分析的资源解耦需求,对IMA系统的功能和服务进行了划分,分析总结了IMA平台的5类功能模型以及11种系统服务模型。按照失效机理对失效模型进行了分类。采用提出的失效模型分析方法对通信功能进行了失效分析并给出了失效应对策略,表明了本方法针对IMA系统失效分析的有效性。     

综合模块化航空电子的液冷设计

介绍了液体冷却技术在综合模块化航空电子设备上的应用,重点放在液体冷却技术 在工程实现上所需要的典型模型、冷板流道选择、液流通道的设计与相关计算等相关内容上 。 样件测试的结果表明了这一技术的工程化应用对机架设备散热带来的优点。     

我国大型飞机航空电子系统的发展与思考

在分析各种宏观政策可能性的基础上,才能对证券市场进行合理的分析和判断。在流动性过剩短期内不能根本性缓解的情况下,与通货膨胀、经济过热以及房价高企相比,接受一定程度的股市泡沫也许是一个最合适的选择。从长期来看,化解股市泡沫的根本途径不是打压股市,而是提高上市公司的质量。在大量过剩的流动性从银行存款流向股市的时候,我们至少可以因势利导做两件事,一是调整我国的宏观金融结构;二是调整我国的产业结构和实现产业升级,并以此实现上市公司质量的提升。     

基于IMA的大型客机CNS系统集成试验和验证

基于综合模块化航空电子系统(IMA)的通信导航监视(CNS)系统与传统CNS的系统架构、信息 传输方式等都有很大的不同,所以需要研 究以IMA为信息处理核心、AFDX加RDIU为信息传输网络的航电系统架构中CNS 系统的集成实 验的技术途径和验证方法。提出了一种按照不同研制阶段将系统集成试验分为全模拟仿真 系统、半实物仿真系统、全实物仿真系统三阶段集成的技术途径和系统验证方法。该技术途 径和方法充分考虑不同阶段系统对集成试验和验证的需求,对CNS集成试验和验证设计具有 一定的借鉴意义。     

Relationship between Machiavellianism and Type A personality and ethical-orientation

Results of a study investigating the relation between personality traits and ethical-orientation indicate sex is not an good predictor for differences in Machiavellian-, Type A personality- or ethical-orientation. Intelligence is found to be positively associated with Machiavellian- and Type A personality-orientation but negatively associated with ethical-orientation. Machiavellians tend to have Type A personalities, but tend to be less ethically-oriented than Nonmachiavellians. Type A personalities are more ethically-orientated than Type B personalities. John Michael Rayburn is Professor of Marketing, The University of Tennessee at Martin. He earned his DBA and has extensive experience in the health care industry as administrator of a 1,000 bed hospital; a 174 bed state psychiatric hospital; and President and CEO of a 200 bed hospital system. He has numerous articles and presentations and is a member of several professional organizations. He has recently received two outstanding teaching awards [student and faculty vote], the outstanding service award [faculty vote], and excellence in research awards [outside peer review]. He has recently implemented a business ethics course in the school of business administration. Letricia Gayle Rayburn, is Professor of Accountancy, Southeast Missouri State University College of Business Administration. She is also a Certified Cost Estimator/Analyst. She earned a Ph.D. in Accountancy and has had both public and industrial accounting experience. She is the author of over 120 published professional articles. Her book Cost Accounting: Cost Management Concepts, is published by Richard D. Irwin. She is also the author of another book entitled Financial Tools for Effective Marketing and co-author of a book entitled Financial Accounting. She is currently past president of the Management Accounting Section, American Accounting Association. She has served a three-year term as a member of the Board of Regents of the Institute of Certified Management Accountants of IMA, as a member of the Committee on Research of IMA and on various other AAA Management Accounting Sections, IMA, and AICPA Committees. Dr. Rayburn is a member of AICPA, Institute of Management Accountants, American Accounting Association, Beta Alpha Psi, and Beta Gamma Sigma.     

Chief Financial Officers' Perceptions Concerning the IMA's Standards of Ethical Conduct

Do chief financial officers (CFOs) of publicly held corporations agree with the Institute of Management Accountants' (IMA) Standards of Ethical Conduct and are they willing to adopt them? To address these issues, a survey was conducted concerning the Standards. The IMA issued the Pronouncement of Standards in June, 1982. In November, 1992, 790 survey questionnaires were mailed to chief financial officers (CFOs) of corporations listed in Forbes. These CFOs held the positions of vice president of finance and controller. Completed questionnaires were received from 208 CFOs representing a 26.3% response rate. The questionnaire employed a 5-point Likert scale and included seven demographic questions to facilitate the interpretation of the findings. The surveyed CFOs agreed with the majority of the Standards. However, many CFOs commented that some of the Standards of Ethical Conduct were difficult to implement in the real world. The CFOs critically commented that all the Standards were too general, too vague, or did not cover the grey areas that occur in real world situations. Ironically, the more years of experience acquired by CFOs, the less they believed in the Standards. Surprisingly, only 41.3 percent indicated that their corporations experienced ethical issues or problems. From the survey, 98.6 percent consider the Standards reasonable, 96.6 percent comply with the them, and 88.4 percent have implemented their own code of ethical conduct standards within their organizations. Thus, 10.2 percent of the CFOs believe the Standards are reasonable but have not implemented any code of ethical conduct standards within their organizations. Also, 8.2 percent of the CFOs comply with the Standards but have not implemented them as policies in their organizations. Interestingly, 11.6 percent of the CFOs that have not implemented their own code of which 60 percent believed that their organizations should adopt a code of ethical conduct. The other 40 percent expressed no plans to adopt any code as policy. Evidence indicates that the less CFOs support the Standard to "Recognize and communicate professional limitations . . .", the more ethical issues and problems occur within their organizations. Also, the organizations with codes of ethical conduct support two particular Standards more than organizations without codes. Finally, CFOs with CPA certification supported the Standard to "Prepare complete and clear reports after appropriate analysis of relevant and reliable information" less than CFOs without the certification.