Coordinated dynamic control of marketing and production

We study the dynamic profit maximization problem for a firm exercising control on both marketing and production. The firs marketing effort impacts the current‐period demand, which in turn affects future demand in a dissipating fashion. Under linear‐cost and zero‐leadtime assumptions, we show that the firm should follow base‐point rules for both marketing and production, whereas trends of the base points reflect a certain complementarity between marketing and production. We obtain comparable results when marketing costs are convex. Our computational study identifies conditions under which simple fixed‐marketing‐effort and fixed‐marketing‐target heuristics would perform well. © 2009 Wiley Periodicals, Inc. Naval Research Logistics 2009     

专家系统和多目标决策理论在抗沉决策系统中的应用

应用专家系统理论建立了抗沉规则库,确定了方案产生逻辑,同时运用多目标决策理论中的简单加性加权法建立了数学模型,对多方案抗沉效果进行了综合评估．成功地解决了舰艇生命力指标间的相互制约、相互影响的问题,为抗沉优化决策提供了新的思路和方法．     

An interactive procedure for selecting acceptable alternatives in the presence of multiple criteria

In this paper, we consider the multiple criteria decision‐making problem of partitioning alternatives into acceptable and unacceptable sets. We develop interactive procedures for the cases when the underlying utility function of the decision maker is linear, quasiconcave, and general monotone. We present an application of the procedures to the problem of admitting students to the master's degree program at the Industrial Engineering Department, Middle East Technical University. © 2001 John Wiley & Sons, Inc. Naval Research Logistics 48: 592–606, 2001.     

基于未确知测度的多目标决策方法及其应用

定义策略、目标和评判三个空间以及满足非负性、归一性和可加性的未确知测度函数,给出了适合于有序分割类评判空间寻优的最优决策准则,从而提出了一种未确知信息数学处理理论基础上的未确知测度决策方法,对含多因素特别是难以量化因素的决策问题寻优建立了一个合理、精细、分辨率高、计算简单高效的数学模型,用来求解多目标决策问题中的最优策略,并结合火力打击选择的一个实例分析,获得了较为成功的应用.     

模糊群体决策的多方案评价方法

针对多方案评估中因素评价难于精确表示的问题,提出了一种基于模糊语言变量和OWA(OrderedWeightedAveraging)集结算子的群体评价模型与方法,给出各因素的方案两两对比偏好语言评价值,并通过对多决策者、子因素、主因素的三次集结和对模型中α值的恰当选取,可得到方案集的优序排列。该方法可行、有效,可为群体决策提供新的途径。     

基于ELECTRE方法的模糊多属性决策

针对传统ELECTRE法的弱点,将ELECTRE法拓展到了模糊环境下,得到一种解决模糊多属性决策问题的新方法,决策评估中涉及到的属性值与属性权重值等模糊信息以三角模糊数形式给出。首先集结决策者对各方案属性的评价,确定出模糊决策矩阵;其次根据信息熵原理,求解出三角模糊数型的属性权重向量;最后给出新的模糊ELECTRE方法的决策步骤。新方法既具有统一的表达形式,又克服了传统方法中和谐性与不和谐性之间具有一定相关性的缺陷。新方法计算简单,给出的实例验证了此方法的可行性和有效性。     

防止反编译技术研究

运用反编译技术可以对软件可执行二进制代码进行非法的修改或窃取其知识产权。为了防范这种情况,提出了在程序的汇编级转化直接跳转为间接跳转和插入伪造的跳转表以隐藏程序控制流的2种方法,来提高程序防止反编译的性能,增加软件分析的难度。     

Dynamic service rate control for a single‐server queue with Markov‐modulated arrivals

We consider the problem of service rate control of a single‐server queueing system with a finite‐state Markov‐modulated Poisson arrival process. We show that the optimal service rate is nondecreasing in the number of customers in the system; higher congestion levels warrant higher service rates. On the contrary, however, we show that the optimal service rate is not necessarily monotone in the current arrival rate. If the modulating process satisfies a stochastic monotonicity property, the monotonicity is recovered. We examine several heuristics and show where heuristics are reasonable substitutes for the optimal control. None of the heuristics perform well in all the regimes and the fluctuation rate of the modulating process plays an important role in deciding the right heuristic. Second, we discuss when the Markov‐modulated Poisson process with service rate control can act as a heuristic itself to approximate the control of a system with a periodic nonhomogeneous Poisson arrival process. Not only is the current model of interest in the control of Internet or mobile networks with bursty traffic, but it is also useful in providing a tractable alternative for the control of service centers with nonstationary arrival rates. © 2013 Wiley Periodicals, Inc. Naval Research Logistics 60: 661–677, 2013     

基于模糊多属性决策的装备维修行为选择

针对装备保障行动中维修行为决策在实践中存在的问题,借助于多属性决策方法和模糊理论,提出基于模糊多属性决策的装备维修行为决策,在分析装备维修行为的影响因素和约束条件的基础上,建立了装备维修行为决策的模型方法,并进行了实例分析。研究表明,该方法能有效降低维修保障费用、缩短维修保障时间和提高维修保障效率。     

防空旅指挥自动化系统Petri网决策组织结构

结合实战,在给出基本决策单元结构模型的基础上,依据战术原则建立了防空旅决策组织结构的Petri网表示模型,在决策单元的结构模型中信息处理分为四级:态势评估级(SA)、信息融合级(IF)、资源分配级(RA)、响应选择级(RS).就决策中同级决策组织结构分三种形式(集中式、分布式和混合式)进行了建模,并对三种形式进行了利弊分析,为防空旅C4ISR系统中决策组织结构的设计和分析提供了依据.