Consecutive k‐within‐m‐out‐of‐n:F system with exchangeable components

As a generalization of k‐out‐of‐n:F and consecutive k‐out‐of‐n:F systems, the consecutive k‐within‐m‐out‐of‐n:F system consists of n linearly ordered components such that the system fails iff there are m consecutive components which include among them at least k failed components. In this article, the reliability properties of consecutive k‐within‐m‐out‐of‐n:F systems with exchangeable components are studied. The bounds and approximations for the survival function are provided. A Monte Carlo estimator of system signature is obtained and used to approximate survival function. The results are illustrated and numerics are provided for an exchangeable multivariate Pareto distribution. © 2009 Wiley Periodicals, Inc. Naval Research Logistics 2009     

Dynamic signatures and their use in comparing the reliability of new and used systems

The signature of a system with independent and identically distributed (i.i.d.) component lifetimes is a vector whose ith element is the probability that the ith component failure is fatal to the system. System signatures have been found to be quite useful tools in the study and comparison of engineered systems. In this article, the theory of system signatures is extended to versions of signatures applicable in dynamic reliability settings. It is shown that, when a working used system is inspected at time t and it is noted that precisely k failures have occurred, the vector s [0,1]^n‐k whose jth element is the probability that the (k + j)th component failure is fatal to the system, for j = 1,2,2026;,n ‐ k, is a distribution‐free measure of the design of the residual system. Next, known representation and preservation theorems for system signatures are generalized to dynamic versions. Two additional applications of dynamic signatures are studied in detail. The well‐known “new better than used” (NBU) property of aging systems is extended to a uniform (UNBU) version, which compares systems when new and when used, conditional on the known number of failures. Sufficient conditions are given for a system to have the UNBU property. The application of dynamic signatures to the engineering practice of “burn‐in” is also treated. Specifically, we consider the comparison of new systems with working used systems burned‐in to a given ordered component failure time. In a reliability economics framework, we illustrate how one might compare a new system to one successfully burned‐in to the kth component failure, and we identify circumstances in which burn‐in is inferior (or is superior) to the fielding of a new system. © 2009 Wiley Periodicals, Inc. Naval Research Logistics, 2009     

激光辐射方位的确定技术

介绍了确定来袭激光束方位的成像技术、时间延迟技术和屏蔽技术的基本原理和发展现状;分析了3种技术的优缺点;探讨了来袭激光方位确定技术的发展方向.     

关于A-增生算子的广义变分包含的Mann-型迭代算法

通过研究A-增生算子的性质,延伸了关于H-增生算子的预解算子概念到新的A-增生算子。通过进一步运用A-增生算子的预解算子技巧,考虑了一类新的关于A-增生算子的广义变分包含,并提出了一种Mann-型迭代算法来逼近此类广义变分包含的解。最后证明了新的一类广义变分包含解的存在性和唯一性,并讨论了由此Mann-型迭代算法产生的迭代序列的收敛特征。     

作战体系有序性判别模型*

未来作战已经逐步演变为体系之间的对抗,为确保我军作战体系有序进行发挥其作战力量,探讨了作战体系有序性问题;应用了耗散结构理论和灰色系统理论,把灰关联度与熵结合起来,以序参量为基础,建立了基于灰关联熵的作战体系有序性判别模型.研究结果为对作战体系实施调控提供了依据,使作战体系符合现代战场态势发展的需要.     

谈部队出租房的消防安全问题与治理对策

分析了目前部队出租房消防管理存在的问题,提出了要把部队出租房纳入审批范畴,加强源头控制;明确工作职责,建立协作监管机制;提高思想认识,重视消防安全管理;落实各级责任,部门齐抓共管;健全监管机制,加强督促检查;加强宣传教育,把握舆论导向;坚持依法管理,提升服务水平。     

刑法修正案（七）中军用标志犯罪立法完善研究

《刑法修正案（七）》对原刑法规定的侵犯军用标志的犯罪进行了修正,但其规定还存在一些立法疏漏和缺陷,有必要予以改进。《刑法修正案（七）》中的罪名应立法化,由立法机关确定;增设非法生产、伪造、变造、盗窃、抢劫、抢夺、破坏、侮辱武装部队专用标志的行为和伪造、变造、盗窃、非法提供、使用、非法出租、出借、赠送武装部队制式服装的行为;犯罪对象应包括制式服装的标志服饰、军服专用材料和军服仿制品;刑罚种类应增加剥夺政治权利;增加非法生产、买卖武装部队制式服装罪的情节加重犯的法定刑。     

论素质教育在培养少数民族大学生中的作用

素质教育作为一项教育的基本决策,其制定和实施已有二十几年的时间。但为什么在长达十几年的学校教育之后,相当多的少数民族青年却越来越感到涉足社会的困难。学校究竟能否使年轻一代得到全面和谐的发展。我们应如何理解和实施素质教育。如何理解素质教育在少数民族大学生的培养过程中的地位。这都是我们全体教育工作者需要思考的问题。本文从分析当前新疆少数民族大学生素质现状入手,重点分析素质教育在少数民族大学生培养过程的作用。目的是使教育工作者从全新的角度看待素质教育在培养少数民族大学生中的地位,进一步增强培养少数民族大学生综合素质的使命感和紧迫感。     

论社会诸因素在促进西域乐舞孕育、整合、传承中所起的作用

西域这一特殊的地理区域,各历史时期所显现的乐舞文化特色,都与社会意识形态的不断变化、民族间的融合以及丝绸之路的繁盛有着密切的关系,特殊的生态环境不仅孕育了独特的具有顽强生命力的乐舞文化形态,更丰富了西域民族乐舞文化的精神内涵。     

一类具有时滞的病毒动力学模型分析

研究一类具有时滞的病毒动力学模型。研究了系统解的有界性;讨论了各个非负平衡点的局部稳定性,应用比较定理得到了各非负平衡点全局渐近稳定的充分条件。