舰炮目标毁伤判定与毁伤效果仿真研究

舰炮对目标毁伤的判定与毁伤效果仿真是舰载作战系统仿真训练的重要组成部分,作为连接舰炮射击与目标毁伤的中间环节,它实现了对目标毁伤状态的判定,以及目标毁伤效果的仿真反馈,从而仿真训练系统中其他仿真成员,以及各型侦察模拟设备可以发现并判定目标毁伤状态,为作战指挥人员进行作战指挥决策提供目标毁伤信息,为参训职手提供更为实战化的仿真训练环境。在简述舰载作战系统仿真训练系统的基础上,重点探讨了基于毁伤概率表和弹目交会的舰炮毁伤判定方法,并简述了目标毁伤效果仿真方法。     

Transformation of Military Ethics During the Zhou Dynasty in Ancient China

ABSTRACT

The transformation of the governance model from a rule of virtue to political realism in China has been a topic of great interest to scholars. In this study, I examine military culture during the Zhou Dynasty and investigate the changes in ethics based on factors such as cultural values, social customs, and political structure to understand the process by which moral values have changed as the governance model transformed from rule of virtue to political realism. I found that military ethics have changed from governance through the use of rituals during the Western Zhou Dynasty to what was called “deception makes an army” during the Eastern Zhou Dynasty.     

基于条件熵的不完备信息系统属性约简算法

在相容关系下定义了三种不完备条件熵——H′条件熵、E′条件熵和I′条件熵,并对它们的性质进行了分析比较,研究发现,H′条件熵和I′条件熵不适用于相容关系下信息观点的约简。利用E′条件熵刻画信息系统中属性的相对重要性,设计了一种新的基于信息论观点的启发式约简算法,它统一了完备信息系统与非完备信息系统中的约简方法。通过实例说明,该算法能得到决策表的相对约简。     

Dynamic server assignment policies for assembly‐type queues with flexible servers

We seek dynamic server assignment policies in finite‐capacity queueing systems with flexible and collaborative servers, which involve an assembly and/or a disassembly operation. The objective is to maximize the steady‐state throughput. We completely characterize the optimal policy for a Markovian system with two servers, two feeder stations, and instantaneous assembly and disassembly operations. This optimal policy allocates one server per station unless one of the stations is blocked, in which case both servers work at the unblocked station. For Markovian systems with three stations and instantaneous assembly and/or disassembly operations, we consider similar policies that move a server away from his/her “primary” station only when that station is blocked or starving. We determine the optimal assignment of each server whose primary station is blocked or starving in systems with three stations and zero buffers, by formulating the problem as a Markov decision process. Using this optimal assignment, we develop heuristic policies for systems with three or more stations and positive buffers, and show by means of a numerical study that these policies provide near‐optimal throughput. Furthermore, our numerical study shows that these policies developed for assembly‐type systems also work well in tandem systems. © 2008 Wiley Periodicals, Inc. Naval Research Logistics, 2008     

微机电系统技术的实际应用——微型仪器

微机电系统被普遍认为是一项面向21世纪的可以广泛应用的新兴技术,作为其实际应用的微型仪器,具有传统仪器无可比拟的优势.从微型仪器入手,分别介绍了其概念、特点和市场应用,并在最后阐述了对微型仪器的几点认识.     

含非线性介质Fabry-Perot腔混沌研究

根据混沌动力学的基本理论 ,计算了含非线性介质Fabry Perot腔动力学方程在其参数下的Lya punov指数分布图。利用Lyapunov指数和动力学特性的对应关系 ,分析出非线性Fabry Perot腔在各种参数下的动力学特性、稳态参数区域面积和混沌转换机制     

高炮火控系统模拟训练及综合评价系统

提出了一种新型的基于计算机及计算技术的高炮火控系统仿真模拟训练及综合评价系统的设计方案。这一方案不仅注重了系统实现仿真训练的基本功能,同时还利用计算机仿真优势,强调了对训练效果的评估及对训练模式的总结。提出了实时决策支持的新概念     

一种基于Mellin变换的水声宽带相关模糊函数的快速算法

提出了一种基于Mellin 变换的快速算法,其特点是在给定的某一时刻得到不同尺度下的变换结果,算法的运算量与待分析的时延成正比,而在固定时刻下的运算量为两个2M点的FFT和一次2M点复数乘法(M为待分析的尺度的个数).该算法的优点是实时性好,且适合于水声信号领域尺度跨度小、尺度分析较细的特点,并给出了与直接法、CZT法的比较结果.     

多目标决策的特殊坐标系求解方法

在多目标决策问题中,满意解常常要在非劣解中寻找。一般来讲,对于两个目标(二维)的解的判别并不困难,但遇到多个目标(n维),且有多个可行解时,对非劣解的判别就显得有些繁复了。因此,采用直观容易的特殊坐标系来判别"非劣解",从而给出求解多目标决策问题满意解的方法。     

应用交互多模(IMM)算法跟踪低空目标

雷达跟踪低空目标时,由于多路径传播的影响,目标俯仰角的测量会出现测量误差.并且由多路径传播引起的测量噪声方差较大,在时间上具有相关性.应用交互多模(IMM)算法来提高跟踪低空目标的性能,并且提出了一种去相关的滤波方法来克服多径误差相关性的影响,最后给出了计算机仿真的滤波结果.