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考虑在租车行业,当车型可替代情况下,建立汽车租赁超售模型,并通过模型分析,得到最优超售策略。通过数值算例对模型进行了求解验证,结果表明该方法更符合实际情况,更好地指导了运营管理人员的销售决策,以在保持客户满意的同时,规避了因客户取消带来的损失,并在提高出租率的同时增加了公司收益。 相似文献
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汽车计价器是乘客与司机双方的交易准则,它是出租车行业发展的重要标志,是出租车中最重要的工具。它关系着交易双方的利益。具有良好性能的计价器无论是对广大出租车司机朋友还是乘客来说都是很必要的。因此,汽车计价器的研究也是十分有应用价值的。 相似文献
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汽车租赁供应链中汽车制造商的回购定价策略 总被引:7,自引:1,他引:6
研究了在汽车租赁供应链中,当汽车制造商为Stackelberg博弈的领导者而租赁商为追随者时.汽车制造商向租赁商提供回购合同时的回购定价策略,分析了租赁商产品维护水平和二手市场对供应链决策的影响.结果表明,与汽车制造商不提供回购合同的情形相比,汽车制造商在一定条件下通过实施回购合同可以有效实现汽车租赁供应链的协调. 相似文献
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针对单个汽车制造商和单个租赁商构成的二级闭环供应链系统,在租赁需求随时间呈指数下降以及回购价格与产品维护水平具有相关性的前提下,研究了占主导的制造商对租赁商的回购激励策略,考虑了租赁商的车辆更新时间、产品维护水平、资金成本以及二手市场对供应链决策的影响,并与制造商不采用回购激励策略进行了比较.结果表明:当回购率满足一定条件时,制造商可通过调整奖惩因子来实现供应链利润在其与租赁商之间的分配,从而保证供应链能达到协调状态. 相似文献
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研究了考虑充电量决策的大规模基站断电运维的多车辆路径规划问题。目标是在运维能力有限的条件下最小化基站断电产生的损失和车辆运行成本的加权总和。分析了该问题区别于传统取送货问题的差异与难点,利用图论模型建立了动态多阶段车辆路径的混合整数规划模型,利用库存理论辅助基站充电量的决策并通过软时间窗口对车辆服务与路径规划进行约束,最后设计了基于局部最优插入和变邻域搜索的动态算法框架进行求解。基于中国铁塔公司真实数据生成的多个算例验证了该算法可以显著降低运维成本,并协助公司进行运维车队规模的规划。 相似文献
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The purpose of this article is to illustrate the application of planning procedures for a process industry. The procedures deal with the determination of (i) optimal production rates and workforce requirements based on future sales forecasts, (ii) optimal capacity of a plant based on the above optimal production rates, (iii) optimal times for expanding capacities, and (iv) total required investment outlay. The optimal production rates and workforce requirements are established by a modified version of Holt's et al. linear decision rule. The methodology is illustrated by using cost, production, inventory and investment data supplied by a domestic paint industry 相似文献
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In this note we show how to generalize Klein's observation that certain production planning problems can be modeled as transportation problems. This represents an application of an old result due to Wagner and described in Ford and Fulkerson's book. 相似文献
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Two models were developed to locate facilities for the timber harvesting industry. Addressed is a case of the facility location-allocation problem. The optimum number and location of landings, facilities to which timber is transshipped, are determined so as to minimize a cost function. This function is composed of the following components: (1) cost of transporting material from its original location to a landing, (2) cost of establishing a landing (facility cost), and (3) cost of transporting material from the landings to some designated point termed the origin. Computer output is designed to facilitate production planning and includes plotter-drawn graphics. Although both models have been developed under a grant from the U.S. Forest Service for the forest products industry, the models have broader application and hence, other industrial applications are addressed. 相似文献
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本文对汽车乘员舱制冷工况下的热环境和人体热舒适度进行了实验研究。实验工况:空调模式:制冷、自动模式内循环、设定温度为26℃;行驶状态:怠速、路试。实验结果表明:乘员舱气温受空间位置和行驶状态的影响,路试状态下气温均匀程度高于怠速工况;乘员舱湿度分布也受空间位置和行驶状态的影响,路试状态下的前后舱内相对湿度差小于怠速工况;舱内座椅的温度受太阳辐射影响和乘员影响,升温阶段温度略高于气温,降温阶段降温速率远小于气温; PMV模型与等效温度模型在怠速和路试工况下与实际人体热舒适度在时间变化趋势上均基本一致,两模型在怠速状态的预测精度均高于相应路试状态,等效温度模型总体预测精度高于PMV模型。 相似文献
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Pier Paolo Patrucco 《Industry and innovation》2014,21(3):243-266
The paper aims at explaining the changes in how economic actors and their organizations acquire and coordinate innovative and productive capabilities. Using the illustrative evidence from organizational change in the automobile industry in Piedmont over the last 50 years, the paper describes how transformations in the structure of interactions between firms are steered by changes in the pattern of specialization and differentiation in the capabilities and technological skills of economic actors. The system is characterized by the emergence of a platform for the coordination of productive and technological activities, which can be seen as a major change in the organization of innovation in the system. 相似文献
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综述了玻璃态聚合物/渗透剂二元体系、玻璃态聚合物/渗透剂/溶质三元体系的非线性扩散模型。详细阐述了线性和非线性的区别与联系,非线性的形成机制;根据聚合物系统中不同形式的扩散,对之进行了分类,表明非Fick扩散是聚合物系统主要特征之一。 相似文献
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James R. Evans 《IIE Transactions》1977,9(1):75-81
The focus of this paper is on modelling dynamic, deterministic, multiproduct, multistage production planning problems as single commodity network flow problems. The advantages of such formulations are discussed relative to computation of good integer solutions and continuous solutions with additional constraints. Special results for a single period problem are developed. 相似文献
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面向状态的维修策略有其优缺点。它带来经济上的效益,因为它延缓设备的磨损,并由于经常检查而提高了设备的利用率。其缺点则是对维修计划与控制的要求较高。战术规划的任务就是将维修策略付之实施,并将维修成本降至最低。 相似文献