初相未知信号联合检测与估计的序贯实现

在未知参数的充分统计量和再生概率密度函数的基础上,引入了联合检测与估计的序贯算法,给出了算法的实现框图,并将该算法应用于高斯噪声中初相位未知信号的联合检测与估计当中.仿真实验表明,新算法较传统算法有一定的性能改善.     

武警学院学术论文统计系统开发及功能实现

针对目前手工学术论文统计工作量大、效率不高的问题,开发计算机学术论文统计系统。通过该系统,可方便实现论文录入、论文统计、论文学术分值自动打分、统计结果保存等主要功能。该系统利用pb8.0开发建立,后台数据库选用的是pb自带的数据库管理系统AdaptiveServerAnywhere7.0(ASA7.0)。     

Systems composed of two types of nonidentical and dependent components

A coherent system of order n that consists two different types of dependent components is considered. The lifetimes of the components in each group are assumed to follow an exchangeable joint distribution, and the two random vectors, which represent the lifetimes of the components in each group are also assumed to be dependent. Under this particular form of dependence, all components are assumed to be dependent but they are categorized with respect to their reliability functions. Mixture representation is obtained for the survival function of the system's lifetime. Mixture representations are also obtained for the series and parallel systems consisting of disjoint modules such that all components of Type I are involved in one module (subsystem) and all components of Type II are placed in the other module. The theoretical results are illustrated with examples. © 2015 Wiley Periodicals, Inc. Naval Research Logistics 62: 388–394, 2015     

基于联合对角化的远场相干信号波达方向估计

提出一种基于联合对角化的远场相干信号波达方向估计算法.利用阵元接收数据构造高阶累积量矩阵,通过矩阵联合对角化得到阵列广义流形矩阵的估计.利用阵列流形矩阵的矩阵特性及最小多项式的性质,消除联合对角化带来的顺序不确定性,得到波达方向的估计.该方法无需进行角度搜索,且能处理不同相干群内部分波达方向相同的情形.计算机仿真实验验...     

On the application and extension of system signatures in engineering reliability

Following a review of the basic ideas in structural reliability, including signature‐based representation and preservation theorems for systems whose components have independent and identically distributed (i.i.d.) lifetimes, extensions that apply to the comparison of coherent systems of different sizes, and stochastic mixtures of them, are obtained. It is then shown that these results may be extended to vectors of exchangeable random lifetimes. In particular, for arbitrary systems of sizes m < n with exchangeable component lifetimes, it is shown that the distribution of an m‐component system's lifetime can be written as a mixture of the distributions of k‐out‐of‐n systems. When the system has n components, the vector of coefficients in this mixture representation is precisely the signature of the system defined in Samaniego, IEEE Trans Reliabil R–34 (1985) 69–72. These mixture representations are then used to obtain new stochastic ordering properties for coherent or mixed systems of different sizes. © 2008 Wiley Periodicals, Inc. Naval Research Logistics, 2008     

谈火灾统计与消防监督

根据火灾统计数据 ,利用一元线性回归数学模型 ,预测火灾发展态势 ,用于指导现实消防监督工作     

Technical note – operational statistics: Properties and the risk‐averse case

Consider a repeated newsvendor problem for managing the inventory of perishable products. When the parameter of the demand distribution is unknown, it has been shown that the traditional separated estimation and optimization (SEO) approach could lead to suboptimality. To address this issue, an integrated approach called operational statistics (OS) was developed by Chu et al., Oper Res Lett 36 (2008) 110–116. In this note, we first study the properties of this approach and compare its performance with that of the traditional SEO approach. It is shown that OS is consistent and superior to SEO. The benefit of using OS is larger when the demand variability is higher. We then generalize OS to the risk‐averse case under the conditional value‐at‐risk (CVaR) criterion. To model risk from both demand sampling and future demand uncertainty, we introduce a new criterion, called the total CVaR, and find the optimal OS under this new criterion. © 2015 Wiley Periodicals, Inc. Naval Research Logistics 62: 206–214, 2015     

基于SSH架构的院校教育实力统计系统设计与实现

针对B／S模式院校教育实力统计系统的开发需求,提出了基于SSH（Struts＋Spring＋Hibernate）架构的解决方案,分析了SSH架构的运行原理与集成方法,给出了系统设计与开发实现的具体过程。实践证明,SSH架构在构建业务系统中能够提高开发效率,增强系统的可扩展性和可维护性。     

对单兵火箭提前修正量的分析研究

为了实现某型单兵火箭的射击在陆军分队作战模拟仿真系统中的仿真模拟,运用数理统计理论对单兵火箭提前修正量进行分析研究,论证了单兵火箭的射程与提前修正量的一元线性回归分析的统计规律,给出了一元线性回归方程和提前修正量的置信区间,论证了在置信区间中的实际提前修正量的射击的弹着点符合正态分布的射击规律和散布律公式。根据得到的理论结果,指导模拟仿真系统对单兵火箭的射击进行仿真模拟。     

量子关联成像技术

作为一种新型的成像技术,关联成像受到了国内外学者的广泛关注。本文阐述了量子关联成像的基本原理,介绍了量子关联成像研究历史,对量子关联成像的特点及其可能的应用进行了简要介绍。