A sequential partial information bomber-defender shooting problem

A bomber carrying homogenous weapons sequentially engages ground targets capable of retaliation. Upon reaching a target, the bomber may fire a weapon at it. If the target survives the direct fire, it can either return fire or choose to hold fire (play dead). If the former occurs, the bomber is immediately made aware that the target is alive. If no return fire is seen, the true status of the target is unknown to the bomber. After the current engagement, the bomber, if still alive, can either re-engage the same target or move on to the next target in the sequence. The bomber seeks to maximize the expected cumulative damage it can inflict on the targets. We solve the perfect and partial information problems, where a target always fires back and sometimes fires back respectively using stochastic dynamic programming. The perfect information scenario yields an appealing threshold based bombing policy. Indeed, the marginal future reward is the threshold at which the control policy switches and furthermore, the threshold is monotonic decreasing with the number of weapons left with the bomber and monotonic nondecreasing with the number of targets left in the mission. For the partial information scenario, we show via a counterexample that the marginal future reward is not the threshold at which the control switches. In light of the negative result, we provide an appealing threshold based heuristic instead. Finally, we address the partial information game, where the target can choose to fire back and establish the Nash equilibrium strategies for a representative two target scenario.     

2D组网雷达目标真实高度的最小二乘估计

针对目标高度估计问题,给出了基于三部以上雷达距离测量的2D组网雷达目标真实高度的最小二乘估计,同时也给出了利用三部雷达计算目标真实高度的非最小二乘算法,并通过大量仿真分析了两种算法的性能。该算法能够在2D组网雷达内实现对目标真实高度的有效估计。     

教学中备课质量的评价分析

备课质量是教学过程中的重要组成部分,对提高教学质量起着重要作用。本文给出了客观量化评价教师备课质量的一种方法,对提高教学质量有积极作用。     

信息集成技术在城市应急联动系统建设中的应用

从城市应急联动系统的需求出发,分析了系统建设中需要重点把握的信息集成共享技术问题、系统集成架构与中间件技术、各部门多层次指挥中心体系的整合问题、安全与保密问题、GIS地理信息系统建设以及城市应急联动系统的建设标准与规范等问题。     

网络图书情报发展趋势之管见

随着科学技术的发展和网络应用的普及,网络已经成为人们工作和生活中不可或缺的重要组成部分。图书情报工作也同样步入了网络图书情报时代,为此,有关人员应对网络情报的基本理论,其发展趋势以及在我国目前的发展现状有所了解。     

作战视图的陆战平台电子信息系统作战需求分析

作战体系结构方法是获取作战需求的有效途径;介绍了体系结构的适用原则、作战视图的研究内容及逻辑关系,运用指挥关系模型、作战活动模型、逻辑数据模型、作战活动顺序与时间模型、作战节点连接能力模型、作战信息交换矩阵对指挥关系、作战活动、作战节点连接能力和作战信息交换进行分析,获得陆战平台电子信息系统的作战需求,为陆战平台电子信息系统作战需求分析提供了一种新的方法。     

Supply contracts in manufacturer‐retailer interactions with manufacturer‐quality and retailer effort‐induced demand

We consider a decentralized distribution channel where demand depends on the manufacturer‐chosen quality of the product and the selling effort chosen by the retailer. The cost of selling effort is private information for the retailer. We consider three different types of supply contracts in this article: price‐only contract where the manufacturer sets a wholesale price; fixed‐fee contract where manufacturer sells at marginal cost but charges a fixed (transfer) fee; and, general franchise contract where manufacturer sets a wholesale price and charges a fixed fee as well. The fixed‐fee and general franchise contracts are referred to as two‐part tariff contracts. For each contract type, we study different contract forms including individual, menu, and pooling contracts. In the analysis of the different types and forms of contracts, we show that the price only contract is dominated by the general franchise menu contract. However, the manufacturer may prefer to offer the fixed‐fee individual contract as compared to the general franchise contract when the retailer's reservation utility and degree of information asymmetry in costs are high. © 2008 Wiley Periodicals, Inc. Naval Research Logistics, 2008     

基于图像编码技术的网络信息传输安全性研究

在研究图像编解码理论和计算图像相似性参数的基础上,提出了基于图像编码技术的网络信息安全传输方法,通过在网络上传输经过编码的参照图像和相似性参数约定,达到图像通信保密的目的,保障了需要传输的图像在网络上的安全性.     

空间信息支援下作战飞机空战效能评估方法

空战是空军的基本作战手段,研究空间信息支援下的空战效能对明确空军装备的需求,搞好空军装备和航天装备体系的规划论证与顶层设计具有重要的现实意义.对空间信息支援下的我方战斗机空战效能进行了分析,建立了效能评估模型,并利用算例进行计算,对计算结果进行了对比分析.     

军事信息系统综合集成探讨

介绍了美军信息系统综合集成现状和发展趋势,分析了以网络中心战为目标、信息系统一体化、基础设施栅格化、武器装备信息化的综合集成特点,通过“博胜”计划和“未来作战系统”的剖析提出了两种综合集成模式。结合军队实际,在需求牵引与明确目标、顶层设计与统一体系、综合一体与信息主导、横向一体与纵向扁平、适应改造与扶弱补缺、提升能力与纳入栅格等六个方面对军事信息系统综合集成提出了建议。