用于海底观测网络的海缆远程供电系统的可靠性

提出了串联恒流和并联恒压两种适合应用于海底观测网络的远程供电系统方案;在相同条件下,利用算法分别完成了两种系统的可靠性设计与分配方案,并根据各子单元的分配可靠度计算了两种系统各节点的供电可靠度。分析结果表明：相比于并联恒压远供系统,串联恒流远供系统对子单元的要求相对较低,而各节点的供电可靠度相对较高,说明串联恒流远供系统更适合应用于我国的海底观测网络建设。     

Some comparisons of residual life of coherent systems with exchangeable components

Most of the research, on the study of the reliability properties of technical systems, assume that the components of the system operate independently. However, in real life situation, it is more reasonable to assume that there is dependency among the components of the system. In this article, we give sufficient conditions based on the signature and the joint distribution of component lifetimes to obtain stochastic ordering results for coherent and mixed systems with exchangeable components. Some stochastic orders on dynamic (or conditional) signature of coherent systems are also provided. © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 549–556, 2014     

A historical overview of US counter-insurgency

Say not the struggle naught availeth,

The labour and the wounds are vain,

The enemy faints not, nor faileth,

And as things have been, things remain.

Arthur Hugh Clough     

用非概率理论分析混合不确定性结构的可靠性

针对不确定性结构可靠性分析中的输入变量分布参数具有不确定性和输入变量为区间模型的混合不确定性结构展开研究。考虑到可用信息最少的情况,将分布参数的不确定性描述为区间模型。通过等概率转换方法将随机变量与其分布参数进行分离,使问题转化为随机与区间变量混合的可靠性问题,建立了混合不确定性问题的可靠性分析模型。基于非概率可靠性理论,建立混合不确定结构分析模型的二级极限状态函数并结合Kriging代理模型建立了高效的求解方法。将所建立的混合不确定模型应用于飞行器结构的不确定性分析中,验证了所建模型的合理性和所提方法的高效性和准确性。     

Limiting survival functions of self‐similar structures

We show the existence of a unique analytic single parameter limiting survival function arising from the repeated composition of a coherent structure as the number of components tends to infinity. Examples include the repeated composition process of the bridge structure. © 2003 Wiley Periodicals, Inc. Naval Research Logistics, 2004.     

A unified model incorporating yield,burn‐in,and reliability

The correlated improvement in yield and reliability has been observed in the case studies on integrated circuits and electronic assemblies. This paper presents a model that incorporates yield and reliability with the addition of a burn‐in step to explain their correlated improvement. The proposed model includes as special cases several yield and reliability models that have been previously published and thus provides a unifying framework. The model is used to derive a condition for which yield functions can be multiplied to obtain the overall yield. Yield and reliability are compared as a function of operation time, and an analytical condition for burn‐in to be effective is also obtained. Finally, Poisson and negative binomial defects models are further considered to investigate how reliability is based on yield. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004.     

基于模糊理论的武器系统可靠性分析和评价

武器系统可靠性是指在规定条件下和规定时间内完成规定功能的能力。传统的可靠性计算方法是基于概率论的,其失效概率通常应根据第一手的数据。然而,实际上不可能收集到足够的数据,一般是依靠专家的经验来判断估计,这类判断通常与模糊性密切相关。本文基于可靠性理论和模糊数学的原则和方法,建立了一套计算串联系统和并联系统的模糊可靠度的计算公式。应用模糊数对武器装备系统单元可靠性予以模糊评价,并采用模糊可靠性计算模型,对武器系统可靠性进行模糊分析和计算。通过对一高炮武器系统的应用分析,证明了该方法的可行性。     

浅析《孙子兵法》中的战机思想

《孙子兵法》中蕴含着丰富而深刻的战机思想。不战全胜的“胜机”思想、立足不败的“待机”思想、变中求胜的“创机”思想、兵贵神速的“夺机”思想和因情用势的“握机”思想等内容,是《孙子兵法》战机思想的核心与精华。     

要地反巡探测系统漏警率的建模及评估

要地反巡探测系统的设计需根据作战指标确定系统能力,此问题涉及到系统的建模及效能评估。应用随机服务理论,对要地反巡探测系统的搜索过程建立了M/D/C模型。根据M/D/C模型计算公式,以AR320地基监视雷达、地空联合探测的搜索过程为算例,验证了搜索模型的正确性,给出了目标漏警率、搜索波束数量与目标出动强度的关系。此模型扩展性良好,研究结果可对系统的设计和评价有所借鉴。