基于三标度法的炮阵地多目标决策方法

针对传统AHP在实际应用中存在的问题,采用三标度法进行炮阵地的多目标优选决策,避免了采用九标度方法构建判断矩阵时权重选择的模糊性,从而减少了决策过程中决策者的主观臆断性。实例证明,三标度法具有简单明了、使用方便等优点,在应用于多目标决策等复杂系统时是适合可靠的。     

模糊综合评判的目标战场价值

选择目标主要考虑目标的战场价值,目标价值决定于目标属性,采用模糊综合评判方法可以量化目标属性,并最终得出目标价值大小。由此,从理论上分析了目标战场价值的模糊综合评判过程,建立了单目标战场价值评判指标体系,提出了目标实际战场价值的模糊综合评判方法,得到了目标战场价值的量值,为指挥员目标选择提供决策依据。     

李雅普诺夫判据在锁相环设计中的应用

本文介绍一种严格判定非线性模型锁相环电路的稳定性方法──李雅普诺夫判据,给出了二阶、三阶非线性环的详细判定过程及设计原则,并对一些实际电路进行了讨论。     

雷达至指挥仪基线误差修正

综合诸元是指挥仪解算精度较高的一种工作方式,但存在一个雷达至指挥仪间的基线误差,本文对这个误差进行分析,并提出了修正的方法。     

On the behavior and shape of mixture failure rates from a family of IFR Weibull distributions

Populations of many types of component are heterogeneous and often consist of a small number of different subpopulations. This is called a mixture and it arises in a number of situations. For example, a majority of products in industrial populations are mixtures of defective items with shorter lifetimes and standard items with longer lifetimes. It is a well‐known result that distributions with decreasing failure rates are closed under mixture. However, mixtures of distributions with increasing failure rates are not easily classifiable. If the subpopulations involved in the mixture have increasing failure rates, there might be some upward movement in the mixture and later a general downward pull towards the strongest component. Little work has been done in describing the shape of mixture failure rates when all subpopulations do not have decreasing failure rate. In this paper, we present general results that describe the shape and behavior of a failure rate of a mixture obtained from two Weibull subpopulations with strictly increasing failure rates. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004     

A decomposition algorithm applied to planning the interdiction of stochastic networks

We describe the application of a decomposition based solution method to a class of network interdiction problems. The problem of maximizing the probability of sufficient disruption of the flow of information or goods in a network whose characteristics are not certain is shown to be solved effectively by applying a scenario decomposition method developed by Riis and Schultz [Comput Optim Appl 24 (2003), 267–287]. Computational results demonstrate the effectiveness of the algorithm and design decisions that result in speed improvements. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2005.     

双球破片冲击柱壳装药的临界起爆条件

为了研究导弹战斗部(柱壳装药)在破片场中的累积毁伤问题,在现有单破片起爆平板装药的Jacobs-Roslund经验准则的基础上,分别建立了考虑破片尺寸、破片撞击角度、柱壳装药的装药半径和壳体厚度的单球破片、双球破片冲击柱壳装药临界起爆条件的工程分析模型.该模型计算结果与数值模拟结果和现有试验结果相吻,证明利用该模型能较...     

旋转弹控制系统结构与弹体静稳定特性研究

采用劳斯稳定判别法,结合某旋转弹的实际控制结构和弹体特性,对不同控制结构对静稳定度适应程度进行了分析,重点研究了不同的控制系统回路结构对弹体稳定特性的适应能力,为旋转弹控制系统设计提供更有针对性的参考。     

Asymmetric information and third-party intervention in civil wars

I study a two-period model of conflict with two combatants and a third party who is an ally of one of the combatants. The third party is fully informed about the type of her ally but not about the type of her ally’s enemy. In a signaling game, I find that if the third party is unable to give a sufficiently high assistance to her ally, then there exists a unique separating equilibrium in which the third party’s expected intervention causes her ally’s enemy to exert more effort than in the absence of third-party intervention; this worsens the conflict.     

考虑抗拉强度的含外倾结构面岩质边坡稳定性分析

当前工程设计都是将边坡失稳破坏看成整体的剪切破坏即M-C剪切破坏,基本不考虑岩土体本身抗拉强度.而岩质边坡真实的破坏应该是张拉-剪切复合破坏,不应是传统不考虑抗拉强度的单一剪切破坏模式.利用FLAC3D软件,基于张拉-剪切复合破坏准则对岩体和结构面强度参数同时进行强度折减,与只考虑抗剪强度的情况进行比较来研究抗拉强度对...