基于仿真的装备维修保障系统探索性分析方法研究

在基于仿真的装备维修保障系统运行评价的研究实践中,遇到输入影响因素多,因素取值调整复杂的现实问题.针对这一现实需求,将探索性分析思想引入装备维修保障系统的评价中.首先利用数学形式化建模方法,研究基于仿真的装备维修保障系统探索性分析方法的问题实质,在此基础上,提出基于仿真的装备维修保障系统探索性分析方法的研究路线,对所涉及的关键问题逐一进行分析,进而提出解决各个关键问题的技术途径.     

装备维修器材保障最小费用模型研究

考虑部队装备维修器材需求量的随机变化对保障费用产生的影响,通过实际问题分析给出了在保障单位零星供应条件下,如何确定保障单位最佳的器材存储量并建立器材保障最小费用模型的程序和方法,最后结合实例,验证了模型的适用性.     

基于重构相空间AD-SVM的短期电力负荷预测

利用重庆市九龙坡区电网2009年7月1日000-10月8日4：00 99 d共2 380个历史电力负荷数据,分析其特点和规律.将构建混沌理论的平均位移（AD）法和支持向量机（SVM）相结合,提出了一种新的短期电力负荷预测模型.通过仿真计算,将结果与神经网络法预测结果进行对比,可得新方法能较好反应数据变化趋势,并且具备较好的拟合能力,能够提高负荷预测精度.在实际短期电力负荷预测中,可优先选用平均位移法与支持向量机相结合的新方法.     

航天侦察情报保障能力需求产生系统设计

开发航天侦察情报能力需求产生系统是实现需求论证工程化的重要环节,是提高装备需求论证质量与效率的有效手段。通过对航天侦察情报能力需求系统特点和功能需求进行分析,明确了系统设计框架;设计了软件系统功能结构和数据库模型,为航天侦察情报保障能力需求产生提供了技术支撑。     

The single and multi‐item transshipment problem with fixed transshipment costs

This article deals with supply chain systems in which lateral transshipments are allowed. For a system with two retailers facing stochastic demand, we relax the assumption of negligible fixed transshipment costs, thus, extending existing results for the single‐item case and introducing a new model with multiple items. The goal is to determine optimal transshipment and replenishment policies, such that the total centralized expected profit of both retailers is maximized. For the single‐item problem with fixed transshipment costs, we develop optimality conditions, analyze the expected profit function, and identify the optimal solution. We extend our analysis to multiple items with joint fixed transshipment costs, a problem that has not been investigated previously in the literature, and show how the optimality conditions may be extended for any number of items. Due to the complexity involved in solving these conditions, we suggest a simple heuristic based on the single‐item results. Finally, we conduct a numerical study that provides managerial insights on the solutions obtained in various settings and demonstrates that the suggested heuristic performs very well. © 2014 Wiley Periodicals, Inc. Naval Research Logistics, 61: 637–664, 2014     

Maintenance scheduling for modular systems: Modeling and algorithms

We study new models of scheduled maintenance management for modular systems, consisting of multiple components with respective cycle limits. The cycle limit of each component specifies the time interval in which this component must be repaired or replaced. The goal is to compute a feasible maintenance schedule that minimizes the cost associated with component maintenance. Applications of these models arise in Air Force aircraft maintenance as well as in other arenas with required preventive maintenance. The typical cost structures that arise in practical settings are submodular, which make the resulting models computationally challenging. We develop two efficient and operationally tenable approximation algorithms. We prove constant factor worst‐case guarantees for both algorithms, and present computational experiments showing that these algorithms perform within a few percent of optimality on operationally relevant instances. © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 472–488, 2014     

武警院校后勤应急保障社会化方式运用研究

武警院校在处突维稳、抢险救灾等应急任务中发挥着重要作用,但在实践中存在着后勤应急保障能力不足问题.分析武警院校应急保障社会化方式运用的必要性,提出具体运用对策和应注意的问题,以利于武警院校抓好应急保障能力建设,推动应急任务高质量完成.     

海军要地防空作战指挥中飞机有效部署区域研究

在遂行海军要地防空任务时,飞机部署区域选择对防空作战有至关重要的影响。通过对防空作战指挥中飞机防空作战指挥流程分析研究,采用战术计算方法得出了防空作战中飞机有效部署区域应满足的必要条件,根据必要条件构建了线性规划模型,并通过图解法求得有效部署区域。最后对研究成果应用领域进行了分析。     

觉察压力、社会支持、健康行为关系的路径分析

目的：综合研究觉察压力、社会支持和健康行为间的关系。方法：在问卷调查的基础上采用路径分析的方法,建立三者之间的结构方程模型并进行验证。研究工具：调查问卷：觉察压力量表;领悟社会支持评价量表;报告健康行为量表。结果：①问卷内部一致性信度为：0.701-0.802。②模型各拟合指数为：χ^2/df=1.34（χ^2=104.481,df=78）;GFI（拟合优度指数）=0.898;AGFI（调整拟合优度指数）=0.900;NFI（规范拟合指数）=0.926,TLI（Tucker-Lewis指数）=0.897;CFI（比较拟合指数）=0.912;RMSEA（近似误差均方根）=0.051。说明模型拟合情况良好。结论：应综合开展包括：压力应对、建立社会支持环境、培养良好生活方式在内的心理健康教育。     

战时维修保障力量配置与保障方式确定方法研究

通过界定维修组时和保障方式的基本概念,建立了装备维修组时和保障力量可用组时预计模型,在此基础上,建立了维修保障力量和保障方式的关系模型,提出战时维修保障力量配置和保障方式确定方法,并以实例对该方法进行了说明和论证,为最优使用维修保障力量、筹划保障行动提供可借鉴的方法。