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。     

单站纯方位目标跟踪系统可观测性分析

针对单站纯方位目标跟踪系统的可观测性,在研究国内外有关状况的基础上,给出了单站纯方位目标运动分析的问题描述,综述了国内外的研究和发展情况,给出了由观测可观测性的一些结论和证明.其中对某些经典的结论给出了简单、明了的证明方法,这些有助于该问题的深入理解和研究.     

ANN-FRIFS在多传感器信息融合故障诊断中的应用

对于多传感器故障诊断系统,必须根据环境的变化和传感器的状态等合理地运用各传感器的信息。文中设计了一种基于经验规则和模糊推理功能的ANFIS置信度判别器,此判别器能自适应地对各传感器数据综合判别,得到它们相应的故障置信度,进而对多传感器的信息进行融合,提高了诊断的准确度。     

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。     

建筑防火课程案例教学研究

在教学方法改革中,案例教学法越来越受到重视。《建筑防火》课程教学运用案例教学法有其必要性和可行性。要认真组织案例教学,充分认识教学过程中存在的问题,创造案例教学应具备的基本条件。通过案例教学调动学员学习的积极性、主动性,提高学员分析和解决问题的能力。     

Collaboration in contingent capacities with information asymmetry

We study the optimal contracting problem between two firms collaborating on capacity investment with information asymmetry. Without a contract, system efficiency is lost due to the profit‐margin differentials among the firms, demand uncertainty, and information asymmetry. With information asymmetry, we demonstrate that the optimal capacity level is characterized by a newsvendor formula with an upward‐adjusted capacity investment cost, and no first‐best solution can be achieved. Our analysis shows that system efficiency can always be improved by the optimal contract and the improvement in system efficience is due to two factors. While the optimal contract may bring the system's capacity level closer to the first‐best capacity level, it prevents the higher‐margin firm from overinvesting and aligns the capacity‐investment decisions of the two firms. Our analysis of a special case demonstrates that, under some circumstances, both firms can benefit from the principal having better information about the agent's costs. © 2007 Wiley Periodicals, Inc. Naval Research Logistics 54:, 2007     

A produce‐to‐stock system with advance demand information and secondary customers

We consider a manufacturer (i.e., a capacitated supplier) that produces to stock and has two classes of customers. The primary customer places orders at regular intervals of time for a random quantity, while the secondary customers request a single item at random times. At a predetermined time the manufacturer receives advance demand information regarding the order size of the primary customer. If the manufacturer is not able to fill the primary customer's demand, there is a penalty. On the other hand, serving the secondary customers results in additional profit; however, the manufacturer can refuse to serve the secondary customers in order to reserve inventory for the primary customer. We characterize the manufacturer's optimal production and stock reservation policies that maximize the manufacturer's discounted profit and the average profit per unit time. We show that these policies are threshold‐type policies, and these thresholds are monotone with respect to the primary customer's order size. Using a numerical study we provide insights into how the value of information is affected by the relative demand size of the primary and secondary customers. © 2007 Wiley Periodicals, Inc. Naval Research Logistics, 2007     

基于信息粒化理论的主体间任务分配方法

有效的任务分配对于多主体系统通过主体间协作完成其使命任务是非常重要的。基于信息粒化理论提出了一种新的解决方法,任务分配过程包括两个阶段:主体和任务粒化阶段和粒内规划阶段。给出了主体和任务粒化阶段的数学表示和基于遗传算法的求解方法。案例分析和对比试验表明本文的方法具有较好的性能。     

演化排列优化拉丁超立方设计方法

拉丁超立方设计是最常用的计算机试验设计方法之一,针对现有拉丁超立方设计方法采样一次性且难以兼顾设计的空间均匀性和计算效率的问题,提出了一种演化排列拉丁超立方试验设计方法。通过对小样本设计的演化、排列信息继承和扩充等操作,以较小的计算量实现了样本的扩充与优化。此外,所提方法可以兼顾现有样本和新增采样点之间的关系,实现样本的序列扩充,这在实际近似建模过程中十分方便。通过多组数值试验,验证了本文方法在空间均匀性和计算效率等方面的优越性。     

基于信息熵的未确知测度的指挥信息优势评估

现代战争中获取信息优势成为夺取战争胜利的关键。为更好对指挥信息优势进行定量评估,在未确知数学理论基础上,首先引入专家可信度对指标效果值进行处理;研究了信息优势的度量和识别方法;并通过评估指标输出的信息熵确定指标权重,建立了基于未确知测度的指挥信息优势评价模型。最后通过实例分析给出评估结果和改进建议,获得了较为成功的应用。未确知效果测度评价模型严谨,评价结果合理、精细、分辨率高,适合于指挥信息优势的评价。