规范火场战斗秩序的实践与思考

分析当前火场战斗秩序混乱的原因，从火灾现场排兵布阵、灭火救援绩效考评和人才保障等方面提出了规范火场战斗秩序，提高灭火实战能力的相应对策。     

基于MCMC方法的Lorenz混沌系统的参数估计

基于贝叶斯理论,提出用马尔科夫链蒙特卡罗(MCMC)方法来估计Lorenz混沌系统的未知参数。首先导出了未知参数分布规律的后验概率密度函数;接着采用自适应Metropolis算法构造Markov链;然后截取收敛的链序列,计算混沌系统参数的估计值。数值试验表明:该方法具有很高的估计精度,同时具有较好的抗噪声性能。     

Properties of some stochastic orders: A unified study

The notions of the likelihood ratio order of degree s (s ≥ 0) are introduced for both continuous and discrete integer‐valued random variables. The new orders for s = 0, 1, and 2 correspond to the likelihood ratio, hazard rate, and mean residual life orders. We obtain some basic properties of the new orders and their up shifted stochastic orders, and derive some closure properties of them. Such a study is meaningful because it throws an important light on the understanding of the properties of the likelihood ratio, hazard rate, and mean residual life orders. On the other hand, the properties of the new orders have potential applications. © 2003 Wiley Periodicals, Inc. Naval Research Logistics, 2004.     

一种高阶累积量的模态参数辨识方法改进及其应用

高阶累积量的模态参数辨识方法能够消除高斯噪声的影响。但基于传统的高阶累积量降阶方法的子空间模态参数辨识方法具有一定的缺陷。为此,提出2种降阶方法用于高阶累积量的子空间模态参数辨识方法,并对这2种方法进行了比较。利用主切片方法对某变截面轴进行了模态参数识别,获得了与有限元法相一致的计算结果,从而证明了该方法的可靠性。该方法的辨识质量较高,能够用于一般结构的模态参数辨识。     

二级库存-运输系统的联合经济订购模型

结合器材供应的实际,构建了一个国家仓库-地区仓库形成的二级库存-运输系统,以最低费用为目标,建立了该系统的联合经济订购模型,求解了该系统各仓库的最佳订货量和订货次数;运用该模型对3种订货策略（年度1次订货、年度多次订货、零库存订货）进行了算例验证,表明了该模型在优化多级库存运输系统订货参数方面的意义。     

Stein–Chen approximation and error bounds for order fill rates in assemble‐to‐order systems

Assemble‐to‐order (ATO) is an important operational strategy for manufacturing firms to achieve quick response to customer orders while keeping low finished good inventories. This strategy has been successfully used not only by manufacturers (e.g., Dell, IBM) but also by retailers (e.g., Amazon.com). The evaluation of order‐based performance is known to be an important but difficult task, and the existing literature has been mainly focused on stochastic comparison to obtain performance bounds. In this article, we develop an extremely simple Stein–Chen approximation as well as its error‐bound for order‐based fill rate for a multiproduct multicomponent ATO system with random leadtimes to replenish components. This approximation gives an expression for order‐based fill rate in terms of component‐based fill rates. The approximation has the property that the higher the component replenishment leadtime variability, the smaller the error bound. The result allows an operations manager to analyze the improvement in order‐based fill rates when the base‐stock level for any component changes. Numerical studies demonstrate that the approximation performs well, especially when the demand processes of different components are highly correlated; when the components have high base‐stock levels; or when the component replenishment leadtimes have high variability. © 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2012     

边防武警执行命令行为的刑法学分析

基于我国的边防体制,边防武警执行命令的行为在边防管理活动中属行政行为,执行军事命令的行为属军事行为。边防武警执行命令行为性质的不同定位,导致了不同的法律意义。在不同的情况下,边防武警对命令有效性的审查义务在范围和程度上是不同的,由此,在认定犯罪排除事由的构成上也应加以区别。执行命令作为排除犯罪的事由,基于不同的要件,可构成合法化事由或者免责事由。在命令合法有效的时候,执行命令就成为合法化事由。在命令不具有合法有效性的时候,执行命令就不能成为合法化事由,但在一定情况下,执行违法命令可以构成免责事由,从而排除行为的犯罪性。     

An EOQ model with multiple suppliers and random capacity

We consider an EOQ model with multiple suppliers that have random capacities, which leads to uncertain yield in orders. A given order is fully received from a supplier if the order quantity is less than the supplier's capacity; otherwise, the quantity received is equal to the available capacity. The optimal order quantities for the suppliers can be obtained as the unique solution of an implicit set of equations in which the expected unsatisfied order is the same for each supplier. Further characterizations and properties are obtained for the uniform and exponential capacity cases with discussions on the issues related to diversification among suppliers. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2006     

非线性自适应统计滤波器在声测量信号处理中的应用

从α-stable分布特征出发,阐述了处理非高斯噪声的LMP、顺序统计、群组等非线性统计滤波器自适应算法;实例验算表明了在α-stable分布下,非线性统计自适应器性能优于传统的线性自适应滤波器,且收敛速度更快.     

低阶高精度单元的发展

综述了四节点等参单元存在的问题，以及提高其精度的途径，并对这些方法略做评述，且探讨了发展高精度单元的方法。