基于两种密码体制结合的网络数据安全模型

利用密码学的方法来解决网络数据传输的安全性问题。在分析对称密码体制和公开密钥体制的代表DSE和RSA算法的优缺点后,提出将两种算法结合的网络数据安全系统的模型。     

应用瞬时谱分析方法验证近炸引信的数字仿真模型

在分析某型近炸引信的工作原理和数字仿真模型的基础上，应用瞬时谱方法分析多普勒信号的瞬时平均频率，验证了近炸引信的数字仿真模型。结果表明瞬时谱是分析多普勒信号这类时变频非平稳随机信号的有效方法。     

本原BCH码的维数与周期分布

本文给出了求分圆陪集首集中元素个数新的计算公式，确定了长度为ｋ的分圆陪集的个数。给出了ｑ元域上狭义本原ＢＣＨ码的维数的计算公式，确定了狭义本原ＢＣＨ码的周期分布。     

最优火力分配的改进方法——递推法

针对均匀分布法确定最优火力分配的不足,给出当某维出现虚数即该维最优火力分布不存在时,对其它维火力分配再优化并达最优的递推法。同时建立了均匀分布法计算ｎ维目标射击效率及其最优火力分配的一般数学模型     

三组元喷嘴混合特性的试验研究

本文对四种类型的气氢／液氧／煤油三组元喷嘴进行了混合特性试验, 研究了内喷嘴的缩进长度对同轴离心外混式喷嘴混合特性的影响, 对比了相同的三组元工况下各喷嘴的混合特性, 分析了喷嘴结构对混合特性的影响, 进行了单喷嘴和三喷嘴的混合特性试验, 试验结果表明： 在相同的三组元工况下, 同轴直流式喷嘴的流强分布跨度比同轴离心式喷嘴小。所得结论对三组元喷嘴和气液同轴式喷嘴的优化设计有参考价值。     

恒定应力加速寿命试验的广义线性模型分析

本文利用对数线性模型给出了指数分布场合下恒定加速寿命试验的极大似然估计．并且说明极大似然估计比线性估计具有优良性。最后,用Ｍｏｎｔｅ－Ｃａｒｌｏ方法作了进一步的说明。     

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     

载荷分布对六自由度运动平台动力学性能的影响

用Newton-Euler方法,分析了运动平台的力矢和力矩,建立了统一的六自由度运动平台动力学方程。利用该方程研究了不同载荷分布时六自由度运动平台各液压缸的受力情况,并用Matlab进行了计算。结果表明,不同载荷分布时,某些液压缸的驱动力的最大值成倍增加,变化极为复杂,为六自由度运动平台的设计及控制提供了理论指导。     

坦克分队遭遇战斗火力运用研究

根据遭遇战斗的特点,运用随机格斗、微分对策数理战术模型,研究坦克分队遭遇战斗最优火力运用策略问题.研究得出的结论符合坦克分队战术特点,为坦克分队指挥决策提供辅助作用.     

A critical look at the U.S. deceased‐donor organ procurement and utilization system

The U.S. system for procuring and utilizing deceased‐donor organs for transplantation has been studied and written about in many articles. The purpose of this paper is to examine the interactions between the elements that comprise this system, and point out improvement opportunities that may be affected through operations research/management techniques. The authors demonstrate the need for developing data‐driven and analytic tools. In fact, data is used to generate hypotheses and support claims throughout the paper. The paper also points out the need to fully leverage data that is available to researchers, and to seek data that is currently not deposited in a centralized archive.