基于排队论的防空兵力部署优化模型

兵力部署优化问题是防空指控系统的重要研究内容之一。针对多型防空武器多层多区段混合部署问题,对异型空袭武器和防空武器基于作战效能标准化处理,基于排队论给出空袭武器的突防概率计算模型,将防空武器系统综合防御效能作为优化目标,建立多型防空武器扇形部署优化模型。仿真实验验证了优化模型的有效性和合理性,可为科学制定兵力部署方案提供参考。     

Non‐zero‐sum nonlinear network path interdiction with an application to inspection in terror networks

A simultaneous non‐zero‐sum game is modeled to extend the classical network interdiction problem. In this model, an interdictor (e.g., an enforcement agent) decides how much of an inspection resource to spend along each arc in the network to capture a smuggler. The smuggler (randomly) selects a commodity to smuggle—a source and destination pair of nodes, and also a corresponding path for traveling between the given pair of nodes. This model is motivated by a terrorist organization that can mobilize its human, financial, or weapon resources to carry out an attack at one of several potential target destinations. The probability of evading each of the network arcs nonlinearly decreases in the amount of resource that the interdictor spends on its inspection. We show that under reasonable assumptions with respect to the evasion probability functions, (approximate) Nash equilibria of this game can be determined in polynomial time; depending on whether the evasion functions are exponential or general logarithmically‐convex functions, exact Nash equilibria or approximate Nash equilibria, respectively, are computed. © 2017 Wiley Periodicals, Inc. Naval Research Logistics 64: 139–153, 2017     

海天背景下舰船可见光图像目标区域定位方法

针对行均值法用于海天背景下舰船目标区域定位可靠性不高、容易受到舰船目标大小和海天背景复杂程度影响的不足,提出一种基于图像行灰度熵的舰船目标区域定位方法。该方法在分析海天背景下舰船目标可见光图像成像特点基础上,结合信息熵理论给出了图像灰度熵及行灰度熵的概念,利用图像行灰度熵描述图像在行方向上的灰度变化程度,选用滑动区间方差搜索策略得到图像行灰度熵曲线的突变区间,从而实现舰船目标区域定位,最后通过实际图像进行了实验验证。实验结果表明,该方法能对舰船目标所在区域有效定位,其准确性及鲁棒性均优于行均值法。     

Place–time correlation of robbery incidents in metropolitan Lagos: a Mantel index analysis

This article investigates the correlation of space and time in the clustering of robbery incidents in metropolitan Lagos. Analysis was carried out on 781 selected robbery incidents in 2013. Using the Mantel index to correlate place and time intervals for pairs of robbery incidents, the results show that robberies are respectively concentrated in residential areas, transport nodes and public places, peaking at midnight during weekdays. The results further show that this concentration is most likely greater than what would be expected on the basis of a chance distribution. The study concludes that various factors may exist which cause clusters of robberies to occur in these places at these times.     

New results on a Ruckle problem in discrete games of ambush

This article deals with a two‐person zero‐sum game in which player I chooses in integer interval [1, N] two integer intervals consisting of p and q points where p + q < N, and player II chooses an integer point in [1, N]. The payoff to player I equals 1 if the point chosen by player II is at least in one of the intervals chosen by player II and 0 otherwise. This paper complements the results obtained by Ruckle, Baston and Bostock, Lee, Garnaev, and Zoroa, Zoroa and Fernández‐Sáez. © 2001 John Wiley & Sons, Inc. Naval Research Logistics 48: 98–106, 2001     

D-S证据论在空中目标分类中的应用

首先叙述识别、分类空中目标时需使用多传感器融合技术,分析可利用的各类传感器和从其可得到的各种目标属性参数,以及各种数据融合方法.然后详细介绍了基于D-S证据论的3种多源信息融合分类空中目标方法,并对具体仿真应用结果作了比较.     

联系实际 实现邓小平理论“三进”目标

进学生头脑”是在高等学校全面实现邓小平理论“三进”目标的关键。在深入调查研究基础上 ,找准联系实际改进邓小平理论教学的切入点 ;采用专题教学方式 ;改变被动的学习方式 ;改革重理论轻实践的考核方式 ,促进邓小平理论进学生头脑目标的全面实现。并在上述过程中 ,注意遵循有利于唤起学生学习兴趣 ,有利于发挥学生学习的主体作用 ,就事论理 ,深化认识 ,不割断历史及实事求是 ,科学严肃的原则     

应用螺旋理论进行Stewart平台机构的静力学计算

应用螺旋理论对并联机器人中常用的一种结构形式—Stewart平台机构进行了静力分析计算 ,并对我校的一个六自由度试验平台进行了校核 ,结果表明分析过程简单明了、运算方便     

子自仿射集的Hausdorff维数

设S1,S2 ,… ,SN 是Rn 上的N个仿射压缩映射 ,若Rn 的紧子集E满足E UNi =1 Si(E) ,则称E为子自仿射集 .作者在一定条件下得到了子自仿射集E的Hausdorff维数 .     

同类防空武器多层防御部署分析

在现代防空中,经常是防空武器多层部署进行防空,故需要对防空武器多层防御部署进行分析.针对同类防空武器多层防御部署的问题,运用排队论,建立了防御体系射击效能的数学模型.按照模型,通过实验仿真,对计算得到的实验数据进行分析,推测出同类防空武器的部署规律,并对防御体系应部署的适宜层数进行了一定的讨论.通过理论推导,证明了部署规律的正确性.最后建立了需求分析模型,运用部署规律对模型进行求解,通过对实例进行计算,给出了求解的基本步骤.