Joint inventory and pricing decisions for perishable products with two‐period lifetime

We consider a periodic review model over a finite horizon for a perishable product with fixed lifetime equal to two review periods. The excess demand in a period is backlogged. The optimal replenishment and demand management (using price) decisions for such a product depend on the relative order of consumption of fresh and old units. We obtain insights on the structure of these decisions when the order of consumption is first‐in, first‐out and last‐in, first‐out. For the FIFO system, we also obtain bounds on both the optimal replenishment quantity as well as expected demand. We compare the FIFO system to two widely analyzed inventory systems that correspond to nonperishable and one‐period lifetime products to understand if demand management would modify our understanding of the relationship among the three systems. In a counterintuitive result, we find that it is more likely that bigger orders are placed in the FIFO system than for a nonperishable product when demand is managed. © 2013 Wiley Periodicals, Inc. Naval Research Logistics, 2013     

建筑材料燃烧性能分级新变革

介绍我国建筑材料燃烧性能分级的现状和未来的发展方向,提出引进欧盟的分级体系形成新的分级方法,并进行分析比较。     

【专题】面向精打产品的红外图像数据采集、治理和应用

面对复杂严酷的战场环境,红外成像精打产品的智能化水平和抗干扰能力是产品生存的重要因素,而图像大数据技术是红外成像精打产品提升技术能力的重要保障。本文结合红外成像精打产品智能化能力提升的需求,提出了面向精打产品的图像数据获取、历史数据及新增数据治理、数据挖掘应用的全过程实用方法,实现了特定目标红外图像数据增补及海量图像数据的高效管理与智能应用;并在图像大数据的支持下,研发了智能信息处理算法性能评价平台和目标检测算法,有效提升了精打产品的智能化水平和实际应用能力。开展基于实际应用需求的图像数据采集、治理和应用技术研究是提升精打产品性能的重要途径,也能够为智能信息处理技术在精打产品上的落地应用提供有力支撑。     

基于AHP模糊综合评判的军工电子产品质量评价研究

采用基于AHP模糊综合评判的方法,针对军工电子产品的自身特点建立了其质量评价数学模型.运用该模型对某型号军用电子产品的质量进行评价,证明了评价方法的可行性.     

Designing a degradation experiment

Degradation experiments are widely used to assess the reliability of highly reliable products which are not likely to fail under the traditional life tests. In order to conduct a degradation experiment efficiently, several factors, such as the inspection frequency, the sample size, and the termination time, need to be considered carefully. These factors not only affect the experimental cost, but also affect the precision of the estimate of a product's lifetime. In this paper, we deal with the optimal design of a degradation experiment. Under the constraint that the total experimental cost does not exceed a predetermined budget, the optimal decision variables are solved by minimizing the variance of the estimated 100pth percentile of the lifetime distribution of the product. An example is provided to illustrate the proposed method. Finally, a simulation study is conducted to investigate the robustness of this proposed method. © 1999 John Wiley & Sons, Inc. Naval Research Logistics 46: 689–706, 1999     

办理消防产品行政案件应注意的问题

针对公安消防机构办理消防产品行政案件存在的问题进行探讨,提出在办理此类案件中应注意的问题,以提高办案质量,减少行政错案的发生。     

美国消防产品召回制度解析

消防产品召回制度是有效预防和消除消防产品缺陷可能引起的人身伤害和财产损失的行政管理制度。在汇总大量美国消防产品召回案例的基础上,介绍了美国消费品安全委员会对缺陷消防产品召回的基本模式、召回方式和程序等内容,以期能对建立符合我国国情的相应制度发挥一定的借鉴作用。     

试论消防产品与公共安全

消防产品是事关国家和人民群众生命财产安全的公共安全产品。目前,消防产品市场秩序混乱、产品质量良莠不齐、个别消防产品标准不一致、安全类产品不安全等问题突出。加强消防产品监督管理、培育完善市场和健全监管机制刻不容缓。     

基于DoDAF的装备体系结构建模方法

美军DoDAF体系结构框架是一种重要的武器装备体系建模标准,对于保证武器装备系统之间可集成性、可互操作性具有重要的借鉴意义。为支撑武器装备体系建设的统一建模过程,优化体系结构和控制变更影响,文章力图在“能力需求牵引”作战思想指导下．提出基于DoDAF标准的结构化武器装备体系结构建模方法。采用DoDAF基线产品与用户自定义产品（基于“适用”原则）相结合的方式,从建模框架、流程、方法和支撑产品等方面对武器装备体系结构建模方法进行系统研究。由于使用结构化建模方式,在建模过程中采用与开发了相关的基础建模产品,从而使得模型更具针对性,建模过程更加直观、具体和易于操作。     

军品质量管理中的统计技术与SPSS软件的应用

统计技术现已成为质量管理中必备的一种工具.结合当前军品质量管理中统计技术的应用现状,分析了我国所面临的紧迫形势;在简要介绍常用统计技术的基础上,将简单、实用的SPSS软件引入了军品质量管理中,大大简化了应用统计技术的难度.