软件可靠性模型中样点可信度

将未确知有理数理论应用于数据建模是常见的建模方法,为了使其更有效地应用于软件可靠性的建模,结合软件失效数据的特点,从样点及样点的可信度两方面,研究未确知理论应用于软件可靠性模型的方法,提出对样点补偿的观点,并给出用补偿后样点计算可信度的计算方法.为未确知理论应用于软件可靠性的建模提供了新思路和新方法,并结合实例说明这一方法的有效性.     

嵌入式软硬件系统的可靠性设计

以工程实践中所做的嵌入式软硬件系统可靠性设计为依据,论述了可靠性设计过程中的依据、指标分配以及设计方法。     

Hardware,Software Platforms,Operating Systems and Routing Protocols for Internet of Things Applications

Wireless Personal Communications - In this paper, we introduce a survey of routing protocols for inter- net of things (IoT). We provide an overview of hardware and software plat- forms for IoT...     

软硬件联合管理实时嵌入式多媒体应用

随着嵌入式处理解决方案复杂性和普及度的提高,软件工程师发现需要将多媒体算法从基于PC系统(带有足够大存储器)的概念验证移植到嵌入式系统,而资源管理对满足性能要求是非常必要的.理想情况下,他们希望在不增加其"舒适"的编程模式的复杂程度情况下,获得尽可能好的性能.图1描述了软件工程师们在功耗、存储器分配和性能方面面临的挑战.     

s-Shaped Software Reliability Growth Models and Their Applications

The s-shaped growth curves of detected software errors can be observed in software testing. The delayed s-shaped and inflection s-shaped software reliability growth models based on a nonhomogeneous Poisson process are discussed. The software reliability growth types of the models are investigated in terms of the error detection rate per error. In addition, a viable method for the software quality assessment, which integrates the capture-recapture method and the models above, is discussed, and its application to actual test data is illustrated.     

基于Markov过程的硬/软件综合系统可靠性分析

现代大型监控系统通常是一个复杂的硬/软件综合系统,其可靠性分析对于系统的设计、评估具有重要意义.综合考虑硬件、软件特点以及两者之间的相互作用关系,提出一种基于Markov过程的综合系统可靠性分析模型,模型中将系统失效分为硬件失效、软件失效与硬/软件结合失效.实际应用中,由于系统的状态数较大,提出利用循环网络方法对Markov状态转移方程进行求解,从而方便地得到系统处于各状态的瞬时概率与稳态概率.通过分析硬/软件综合系统可靠度、可用度与系统可靠性参数之间的关系,指出硬/软件结合失效将影响系统可用度,忽略硬/软件结合失效将导致可靠性估计值偏离实际值.     

微型打印机与FPGA的硬件接口及软件设计

为了实现便携式、实时打印数据的目的,在分析EP3C25型FPGA和RD-E型微型打印机性能特点的基础上,基于嵌入式技术设计了FPGA与微型打印机的硬件接口电路、软件流程及控制程序。利用FPGA控制微型打印机正常工作,对功能模块进行了仿真,实际应用中运行稳定。利用FPGA的稳定性与高速数据处理能力,实现实时打印。整个系统集成于一块电路板,并由微型打印机输出,体积小,携带方便。     

软件无线电的硬件和软件的结构模型

简要描述了几种软件无线电的结构模型。并分析了这些结构模型所具有的特点。而CORBA是一种软件开发的协议规范。目前，研究人员正在研究基于CORBA来开发软件无线电的软件部分。以此来实现软件程序的可重用性。     

随机建模方法的技术研究及软件应用

随机建模是目前储层建模技术的突出发展方向,是根据地质适用性的不同而建立的不同模型。文中讲述了随机建模的目的和意义,研究了随机建模的现状和技术发展,介绍了多点统计学的建模方法及国际上主要的随机建模应用软件。储层建模技术的应用加强了油田开发后期各环节之间的联系,具有广泛的应用前景。     

多采样率数字信号处理及其在软件无线电中的硬件实现

介绍了多采样率数字信号处理（MRDSP）的基本理论和其中广为应用的两类高效的数字滤波器，以HSP50214和AD9856为范例，研究了MRDSP在软件无线电中的两种典型的硬件实现。     

软件无线电技术的进展及应用

软件无线电是90年代兴起的一种充分结合软件和硬件优势的新技术。首先介绍了软件无线电的概念和优势,然后阐述了当前软件无线电的进展和发展趋势,最后讨论了它在军事通信系统和第三代移动通信系统中的应用。     

一种改进的MAS建模方法及其应用

软件系统日益复杂化的需求对软件建模方法提出了更高的要求。针对传统MAS（Multi-Agent System）建模方法在分析系统扩展性方面的不足,以资源、协议两大模型为核心,提出一种新的、面向高可扩展性的建模方法——EM—MAS,并将该方法成功地运用到安全管理平台系统的构建之中,使得该系统具有热部署、动态设备扩展等高度可扩展特性。     

软件无线电与3G实现方案

包含多种不同标准的数字移动通信技术要求非常灵活的解决方案，采取软件编程的解决方案是最佳的选择。本详细讨论了移动通信系统中软件无线电的概念、起源、原理及其在移动通信中的应用。     

Modeling of IC Socket Contact Resistance for Reliability and Health Monitoring Applications

We present a methodology based on the physics of failure, and the sequential probability ratio test, for modeling and monitoring electrical interconnects in health monitoring, and electronic prognostic applications. The resistance behavior of an electrical contact was characterized as a function of temperature. The physics of failure of the contact technology were analysed. A contact resistance model was selected, and its parameters were fitted using the temperature characterization data. The physics of failure model was evaluated with a reliability application (temperature cycle test), and was found to produce estimation errors of $≪ 1 {rm m}Omega$ during a training period. The temperature and resistance of ten sample contacts were continuously monitored during the temperature cycle test, identifying the maximum temperature and resistances for each cycle. Using the physics of failure model, maximum resistance estimates were generated for each test sample. The residual between the monitored and estimated resistance values was evaluated with the sequential probability ratio test. The method was shown to overcome the issues of traditional threshold-based monitoring approaches, providing accurate resistance estimates, and allowing the detection of abnormal resistance behavior with low false alarm and missed alarm probabilities.      

相关向量机软件可靠性建模中失效数据选择

摘要：基于核函数的软件可靠性模型一般对软件失效时间数据与发生在其之前的m次失效时间数据的关系进行建模,着重研究了m取值不同时,其对核函数可靠性模型预测能力的影响。在5个不同类型失效数据集上,采用Mann-Kendall检验观测到m值增大时模型预测能力逐渐下降,说明现时失效时间数据能比较久之前观测的失效时间数据更好地用于预测未来,通过把m的取值划分成几个区间,运用配对T检验进行实验研究,结果表明当m∈｛6,7,8,9,10｝时,模型能够得到最好的预测性能。     

深度学习算法、硬件技术及其在未来军事上的应用

人工智能在感知和认知智能领域取得的重大进展,促进该技术向军事应用的转移。从当前深度学习算法研究重点展开论述,对其未来的技术应用、发展方向进行了系统的梳理,从延续传统架构的CPU、GPU、FPGA、ASIC和非传统架构的神经拟态芯片两个阵营出发,依次对比分析了各个计算架构的结构特点以及对人工智能硬件未来发展带来的影响,同时以雷达红外图形处理技术和声呐信号处理技术在军事上的应用为例,阐述了人工智能技术在未来军事领域内的发展方向。     

Software Configuration Management and Its Contribution to Reliability Program Management

A brief introduction describes the characteristics of configuration management and outlines the key issues of knowledge and control of content, along with the targets developed for configuration management. Software, as a relatively new discipline, is still evolving standard techniques. The special properties of software which cause difficulty in configuration management are discussed. The theme moves to the planning of configuration management in order to support the reliability program. While many organisations consider con-figuration management at the end of development, the reasoning and recommendations (based on experience) are given for applying configuration management during the entire development and life of a project. The paper shows how to implement software configuration management and describes the method used in YARD. It concentrates on the view of the system by all users, and the impact on the ability to send software to customers with confidence, keep track of reported defects, and trace the effect of modifications on all issued software. The software configuration control system is the foundation on which all reporting systems must be based. It is an entirely different matter accumulating and analysing failure reports on some object like a pressure transducer, the configuration control for which is easily identified, than a large software-based system undergoing continual evolution and correction. The use of computers to maintain configuration control discipline on software is essential and, in our experience, works.     

船载AIS无线传输系统的软硬件可靠性设计

船舶自动识别识别系统(AIS)是一种新型的助航系统和设备,在海事通信中将会发挥着巨大的作用.无线传输系统是该系统中底层的重要组成部分.为了使无线传输系统更加稳定,可靠性更高,我们提出了在软件和硬件方面提高可靠性的思路和方法,尤其是对软件方面的方法进行了重点的研究和探讨.     

软件的开发,质量管理及可靠性

文章在分析当前我国的软件开发、质量管理及可靠性中存在问题的基础上,较详细地论述了这三方面的内容,最后指出了其发展方向.     

Mixing of Two Renewal Processes and Its Applications to Reliability Theory

The probabilistic behavior of repairable two-state systems is studied. It is assumed that the reliability of the system can be measured by the amount of time the system has been operative. The operating and repair states are a pair of renewal processes, a particular mixture of which describes the statistical behavior of the system. The object of this contribution is to extend the results of Muth who has earlier obtained the average value of the downtime and its variance, when one of the constituent renewal processes has its interval lengths distributed exponentially. This paper, by the repeated use of the method of regeneration points, obtains the mean and mean-square values of the uptime distribution. In addition the correlation of the uptime for different times has been derived and a proof of Takacs' theorem is provided. Since the criteria for the reliability of the system include the associated cost, it is worthwhile investigating the operating cost over any period of time for arbitrary distribution of the two states. In particular a demonstration of the calculation of the first two moments of the total cost is given.