论商业街防排烟设计的审核

以某室内商业街为例,重点讨论了对这种新建筑形式的防排烟设计审核,并通过计算对该设计进行校核。对这类规范没有明确规定或超出规范规定的建筑物的审核方式提出了建议。     

天津奥林匹克中心体育场消防安全疏散设计

介绍了天津奥林匹克中心体育场工程消防安全疏散设计存在若干与现行消防规范及相关技术标准不相符之处,但采用性能化设计的理念,对人员安全疏散设计进行分析评估,得出结论认为设计能满足人员安全疏散标准,即该工程的消防安全疏散设计是安全的。     

土质边坡工程风险分析

扼要地阐述了边坡工程事故引发的原因和边坡工程体系包含的不确定因素,从自然、社会、经济、管理等方面对这些因素进行了归纳,介绍了安全评估的故障树分析法以及由顶事件概率求底事件概率的计算公式.从技术的角度对土质开挖边坡工程体系进行了研究,建立了边坡工程故障树模型以及在此模型下边坡工程风险事件发生概率Pf的计算方法.在求解风险损失的过程中分析了传统专家调查法存在的不足,从而提出改进的专家调查法.通过工程实例,定性和定量地对边坡工程风险进行了分析,利用风险分级体系对风险的大小进行评价,为边坡工程风险管理提供了一定的依据.     

On optimal system designs in reliability‐economics frameworks

Reliability Economics is a field that can be defined as the collection of all problems in which there is tension between the performance of systems of interest and their cost. Given such a problem, the aim is to resolve the tension through an optimization process that identifies the system which maximizes some appropriate criterion function (e.g. expected lifetime per unit cost). In this paper, we focus on coherent systems of n independent and identically distributed (iid) components and mixtures thereof, and characterize both a system's performance and cost as functions of the system's signature vector (Samaniego, IEEE Trans Reliabil (1985) 69–72). For a given family of criterion functions, a variety of optimality results are obtained for systems of arbitrary order n. Approximations are developed and justified when the underlying component distribution is unknown. Assuming the availability of an auxiliary sample of N component failure times, the asymptotic theory of L‐estimators is adapted for the purpose of establishing the consistency and asymptotic normality of the proposed estimators of the expected ordered failure times of the n components of the systems under study. These results lead to the identification of ε‐optimal systems relative to the chosen criterion function. © 2007 Wiley Periodicals, Inc. Naval Research Logistics, 2007     

Outbound supply chain network design with mode selection and lead time considerations

We present a large‐scale network design model for the outbound supply chain of an automotive company that considers transportation mode selection (road vs. rail) and explicitly models the relationship between lead times and the volume of flow through the nodes of the network. We formulate the problem as a nonlinear zero‐one integer program, reformulate it to obtain a linear integer model, and develop a Lagrangian heuristic for its solution that gives near‐optimal results in reasonable time. We also present scenario analyses that examine the behavior of the supply chain under different parameter settings and the performance of the solution procedures under different experimental conditions. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2007     

火控计算机CPU板测试与故障诊断

针对某火控计算机CPU板的检测与诊断问题,提出了利用专用测试程序实现交互式诊断的方法,在握手测试的基础上,通过自检与被动测试相结合,实现板级和模块级的功能检测和故障诊断。给出了详细的硬件设计方案,提出了故障诊断的基本思路和方法,对同类CPU板的测试和诊断有一定指导意义。     

步兵分队侦察模拟训练系统构建

针对步兵分队侦察训练存在地形受限、战斗情境失真、训练条件构设难等问题,本文在系统分析军事需求的基础上,采用软、硬结合的虚拟仿真技术对步兵分队侦察模拟训练系统框架、体系结构、物理结构、内外接口和应用模式进行了详细分析设计,并对关键技术进行了剖析,该系统方案设计已应用于步兵分队侦察模拟训练系统建设,并投入到院校教学训练中。实践表明,系统通过逼真的视、听一体化实现了高度沉浸式的训练,以现实地形和敌情的高度仿真与灵活组合,满足了步兵分队侦察技能训练对多样化战场环境、实战化目标设置的特殊要求,大大提升了步兵分队地形侦察、敌情侦察及综合对抗训练效益。     

一种分布式战术防空C3I系统仿真平台的框架结构研究

详细给出了分布式战术防空C3I系统仿真平台构建的总体设计及具体的网络平台方案。引入了高层体系结构 ,并将其技术规范应用到仿真平台的互联上 ,从而形成新一代的分布交互仿真系统。     

软硬交替多层膜法向压入过程的有限元分析

采用大变形弹塑性有限单元法,对高速钢基体上的软硬交替多层膜在法向压痕作用下的力学行为,进行了模拟和分析.为了研究膜层数和膜厚的影响,对从单层到16层的不同膜层体系进行了计算.通过对诸如膜层的变形、最大应力随膜层数的变化、界面剪应力分布、表面张应力分布等的分析,得出了这些参数的分布及其对膜层体系的摩擦学性能的影响.这些结果可为多层膜的结构优化设计提供定量的依据.     

通用装备保障“可视化”系统分析与设计初探

以“可视化”理论与应用为技术指导 ,在分析研究通用装备保障“可视化”重要性的基础上 ,详细分析了装备保障可视化系统的内涵、层次划分和建设的基本思想 ,提出了实现装备保障“可视化”的原理框图和几种实现方式 ,从而构建了装备保障系统可视化研究的一种体系结构。