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.     

基于Bayes方法的射击密集度评估

以某远程武器射击密集度鉴定问题为对象,研究了运用Bayes 理论从仿真试验数据中提取有用信息,从而实现在少量试验样本情况下有效完成射击密集度试验鉴定任务的方法.将最大熵法应用于射击密集度估计,介绍了运用自助(Bootstrap)法从仿真试验结果中获取验前信息的基本思想和一般方法,以及在获得验前信息后结合现场试验样本进行射击密集度鉴定的方法.     

结构方程模型参数估计的GME方法

提出应用广义最大熵的方法对结构方程模型的参数进行估计,该方法能够处理有限的或者不完全数据。为了验证广义最大熵方法在估计结构方程模型参数时的性能,采用了一个应用于美国顾客满意指数(ACSI)的结构方程模型生成仿真数据,仿真结果表明,与PLS相比,GME方法具有更高的拟合精度和较低的预测误差,在样本数据较少时,表现更为明显。     

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     

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。     

车载仪表信息化改造设计

通过对车载原有仪表传感器信息的提取,把原有仪表融入整车的信息化管理体系中,在有效节约设计成本的情况下,实现整车重要参数信息的实时监控,为乘员准确了解全车各项重要参数信息、及时进行决策提供了可靠的数据支持。     

对高校管理信息化建设的调查与分析

高校管理信息化是一个包含着技术、组织、理念等多种因素的综合体系,对高校和社会发展均具有重大意义。目前,各高校对于管理信息化建设在目标定位、建设措施、组织实施等方面都存在不足。本文对石河子大学高校管理信息化建设现状进行了调查分析,针对学校存在的问题提出了抓目标定位、整体规划、技术支持等重要环节,以推动高校管理信息化建设的纵深发展。     

基于语言评价信息的多方案选优研究

通过LWD和LOWA算子,给出了一种算法。该算法在预先定义语言短语排序的情况下,可将专家群给出的多个指标下多个方案的语言评价信息集结为对方案的语言短语排序,从而可选出最优方案,并通过仿真算例,证明了该方法的有效性。     

信息/求解 Petri 网系统

绝大多数 Petri 网在变迁发生后前集库所会失去标记,不便于表达一个条件一旦具备将永远具备的情形.针对该问题,基于0-1标识与变迁发生后其前集不失去标记的思想,提出了信息/求解扩展 Petri 网系统(I/S系统).给出了I/S系统的相关定义、部分基本性质、矩阵表示、求解发生权向量的求法和状态方程.最后,给出了以I/S系统表示的几种常见滑模变结构控制策略的设计过程,该例显示了I/S系统的模型表达能力.     

双模量子态在原子介质中的存储

从四能级暗态极化子出发,讨论双模量子场与原子介质的信息转换过程以及2信号场之间的信息转换过程。利用双-Λ型四能级原子系统,可以存储双模量子态(包括一些纠缠态),从理论上解释了双模量子信息在介质中的"写入"和"读出"过程。提供了双信号场存储的实验方案。