Newsvendor bounds and heuristics for serial supply chains with regular and expedited shipping

We study an infinite‐horizon, N‐stage, serial production/inventory system with two transportation modes between stages: regular shipping and expedited shipping. The optimal inventory policy for this system is a top–down echelon base‐stock policy, which can be computed through minimizing 2N nested convex functions recursively (Lawson and Porteus, Oper Res 48 (2000), 878–893). In this article, we first present some structural properties and comparative statics for the parameters of the optimal inventory policies, we then derive simple, newsvendor‐type lower and upper bounds for the optimal control parameters. These results are used to develop near optimal heuristic solutions for the echelon base‐stock policies. Numerical studies show that the heuristic performs well. © 2009 Wiley Periodicals, Inc. Naval Research Logistics, 2010     

一种改进的联合概率数据关联算法

联合概率数据关联算法(JPDA)是密集杂波环境下一种有效的多目标跟踪算法,但该算法的复杂度会随着目标和观测值的增加而显著增长。为了减少JPDA算法所需要的存贮空间和计算时间,提出了一种改进的联合概率数据关联算法(I-JPDA)。首先通过合理选取跟踪门门限的阈值,去除小概率事件,然后再根据跟踪门内目标的关联概率对关联事件的概率密度值进行衰减,计算出跟踪门内各目标的关联概率。经过理论分析和仿真试验,证明了该方法在保证跟踪成功率的同时,还具有算法简单、计算量小和易于工程实现等优点。     

着眼"一国两制"特点加强和改进思想政治教育的经验与启示

着眼"一国两制"条件下驻军特点,加强和改进思想政治教育,必须牢牢占领思想政治教育课堂灌输这一主阵地主渠道;突出强调思想政治教育内容形式的高格调高品位;始终坚持思想政治教育方法手段的人性化多样化.     

兵器物流信息化标准研究

物流信息化对制造性企业提高物流效率、降低管理成本具有重要意义,而标准化在物流信息化中占有重要地位。兵器工业作为国家战略性的制造企业,正面临着物流信息化的建设和提升阶段,标准化需求更为突出,本文主要对兵器物流信息化标准的建设内容、实施方法等进行研究。     

光纤陀螺的应用与发展

光纤陀螺作为惯性技术的核心器件,已经逐渐成为陀螺市场的主流产品。本文根据光纤陀螺的特点介绍了在各个领域的应用,调研了光纤陀螺在国内外的发展现状,并指出了光纤陀螺的发展趋势。     

社会团体在国民经济动员中的作用探析

改革开放30年,我国的社会结构发生了巨大的改变。随着政府职能的不断调整,政府逐渐从对社会的全面控制中退让出来,社会的自我调节能力得到显著增强,突出的表现就是社会团体的壮大。国民经济动员必须适应社会结构的变化,充分发挥社会团体在国民经济动员中的作用。     

兵器装备动员生产标准体系初探

本文描述了兵器装备动员生产领域对标准的需求与存在的问题,对兵器装备动员生产标准体系框架进行了研究。在此基础上,对标准体系建设及相关标准的制定提出了几点建设性的意见。     

材料标准体系研究

本文阐述了材料标准体系的结构、形式、编制原则、总体要求等,论述了材料标准体系建设的重要性,提出了集团公司材料标准体系建设的具体措施。     

The effect of a temporary product distribution channel on supply chain performance

We analyze a supply chain of a manufacturer and two retailers, a permanent retailer who always stocks the manufacturer's product and an intermittent deal‐of‐the day retailer who sells the manufacturer's product online for a short time. We find that without a deal‐of‐the‐day (DOTD) retailer, it is suboptimal for the manufacturer to offer a quantity discount while it is optimal for the retailer to offer periodic price discounts to consumers. With the addition of a DOTD retailer, it is likely to be optimal for the manufacturer to offer a quantity discount. We show that even without market expansion, i.e., no exclusive DOTD retailer consumers, opening the intermittent channel can leave the permanent retailer no worse‐off while increasing the manufacturer's profit. We identify the regular and discounted wholesale prices and the threshold quantity at which the manufacturer should give the discount. We also identify the optimal retail prices. We find that opening the intermittent channel increases the profit of the manufacturer, is likely to decrease the average retail price and to increase sales, and may increase the permanent retailer's profit. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 505–528, 2016     

夯实标准化管理基础 努力提高兵器民爆竞争力

通过介绍兵器集团公司对民爆器材行业的管理体系、渠道和方式,探讨集团对民爆器材的标准化管理模式。