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1.
《Socio》2017
The focus of this research is on supplying gasoline after a natural disaster. There are two aspects for this work: determination of which gas stations should be provided with generators (among those that do not have electric power) and determination of a delivery scheme that accounts for increased demand due to lack of public transportation and considerations such as equity. We develop a mixed integer program for this situation. Two case studies based on Hurricane Sandy in New Jersey are developed and solved in CPLEX. As expected, increasing equity increases cost and also tends to place generators to stations with large initial inventories. It is further observed that CPLEX can solve the largest instances of the problem for a 5% tolerance gap, indicating that the model is efficient. 相似文献
2.
《Socio》2016
This paper addresses the problem of distributing relief supplies after the occurrence of a disaster. We develop a dynamic model to serve demand, while prioritizing the response, according to the level of urgency of demand points. Our model is thought to be applied during a planning horizon and it considers dynamic demand, capacity constraints and priorities. To evaluate the applicability of our model, we use a real case study of a flood occurred in Colombia. We also test the computational solvability of our model and we propose and test different solution methodologies for solving larger instances of our problem. 相似文献
3.
《Socio》2020
Models for the distribution of relief supplies often assume immediate availability of relief items upon the occurrence of a natural disaster. However, such an assumption does not always apply in realistic settings. In some cases, at least it is necessary to assemble relief items into kits before distributing them among the affected population. This paper presents a rolling horizon methodology that considers dynamic parameters such as demand, capacities and demand priorities for the problem of distributing relief supplies after the occurrence of a natural disaster by including such assembling activities before the delivery. 相似文献
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供应链协同是供应链管理中的重要问题,供应链上不同阶段的决策者应当如何安排产品的生产、配送顺序,近年来有研究将经典生产排序理论引入供应链管理中,针对上述协同问题提出供应链排序研究模型,但还没有形成统一的框架和定义,本文将介绍这一领域的研究现状和发展前景. 相似文献
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物流企业的现代化发展和激烈的市场竞争对物流企业业务流程提出了新的要求,首先概述了传统物流业务流程方案的现状及存在的问题,然后以航空物流公司为例,制定了一种新的物流企业业务流程优化方案并提出了相应的保障措施,通过流程的优化设计,以实现物流企业综合竞争力的提升。 相似文献
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现阶段,企业与企业之间的竞争,其实就是供应链系统的竞争,就是物流管理能力的竞争。因此,本文笔者就以当前我国企业供应链系统管理下的物流管理工作中存在的问题进行分析,从而总结出有效的解决措施。 相似文献
8.
本论文在研究大量文献的基础上,总结并阐述了基于供应链的物流模型、供应链运输决策机制的基本概念、目的以及决策参与者,接着从理论分析的角度研究供应链中物流管理的运输决策机制的内容:运输量的预测、第三方物流提供者选择决策、运输工具决策、运输价格决策以及物流运输路线优化决策等,以保证运输决策正确进行,降低运输成本以及有效的进行供应链管理。 相似文献
9.
《Socio》2023
The COVID-19 pandemic has disrupted the humanitarian supply chain management (HSCM) necessary for delivering emergency items during the disaster. The combined effects of climate change and the pandemic uncover the vulnerabilities of humanitarian supply chain operations and highlight the importance of risk management. This study aimed to identify priority risk factors and proposed mitigating risk strategies of a local government that is at the forefront of relief operations. It used Grey Relational Analysis (GRA) method to validate the Failure Mode and Effect Analysis (FMEA) approach in identifying priority issues relating to the supply chain risks. This paper reveals that the results of FMEA and GRA are almost similar. 相似文献
10.
一体化物流与供应链管理是本世纪末全球最有影响的工商业管理趋势之一。本文从一体化物流和应链管理的形成与发展、如何建立大、中型生产企业和流通企业多方位、纵横交错、相互渗透的协作有机体系和供应链联盟等方面作了有关论述。 相似文献
11.
基于供应链的物流信息技术研究 总被引:7,自引:0,他引:7
从企业竞争力的角度出发,参照现行的国际标准,较为系统地探讨了供应链管理实践中经常应用的物流信息技术。有效地运作物流信息技术,可能帮助企业及其战略合作伙伴实施物流和信息流一体化的供应链管理。 相似文献
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从企业竞争力的角度出发,参照现行的国际标准,较为系统地探讨了供应链管理实践中经常应用的物流信息技术。有效地运用物流信息技术,可以帮助企业及其战略会计伙伴实施物流和信息流一体化的供应链管理。 相似文献
13.
第三方物流是供应链中的关键环节.在供应链条件下,为了增强竞争优势,越来越多的企业选择只做自己擅长领域的业务,而将其他相关业务外包出去,这促使第三方物流的力量逐日强大.随着第三方物流企业逐渐参与供应链的各种业务,其在供应链中的地位也日益重要.另一方面企业越来越重视从战略全局的角度来规划供应链,这预示着以第三方物流企业为核心的供应链模式的出现,也预示着企业将以战略的角度来匹配这种供应链管理模式. 相似文献
14.
文中首先阐述了供应链管理在物流中应用的必然性,分析了供应链管理环境下的物流管理与传统物流管理的区别。其次,探究了当前供应链管理环境下物流管理的特点及存在的问题,并提出了相应的创新措施。 相似文献
15.
《Socio》2020
Disaster response operations revolve around uncertainties. While uncertainties arising due to randomness can be avoided for post-disaster location problem, those arising because of impreciseness may persist long after the disaster's occurrence. Despite the uncertainties and lack of sufficient information about the extent of the damage, disaster response facilities must be established quickly after the occurrence of the disaster. Moreover, the decisions of whether to open, where to locate, and when to open disaster response facilities are based on the amount and quality of information available during the decision-making period. To address these issues, we develop a multi-objective location-allocation model for relief supply and distribution that accounts for the imprecise and time-varying nature of different parameters and time-varying coverage, while also accommodating the subjective attributes necessary to enable establishment and operation of the temporary logistics hubs (TLHs). A credibility-based fuzzy chance-constrained programming model is employed to account for the impreciseness inherent in predicting parameter values during disaster response. The results show where, when, and how many TLHs to open and how to allocate relief supplies. Meanwhile, the sensitivity analysis provides a broader understanding of the impact of limiting the number of TLHs as well as the confidence level and the spread of the symmetric triangular fuzzy numbers on the attainment of the model objectives. 相似文献
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A logistics model for emergency supply of critical items in the aftermath of a disaster 总被引:4,自引:0,他引:4
This paper proposes a logistics model for delivery of prioritized items in disaster relief operations. It considers multi-items, multi-vehicles, multi-periods, soft time windows, and a split delivery strategy scenario, and is formulated as a multi-objective integer programming model. To effectively solve this model we limit the number of available tours. Two heuristic approaches are introduced for this purpose. The first approach is based on a genetic algorithm, while the second approach is developed by decomposing the original problem. We compare these two approaches via a computational study. The multi-objective problem is converted to a single-objective problem by the weighted sum method. A case study is presented to illustrate the potential applicability of our model. Also, presented is a comparison of our model with that proposed in a recent paper by Balcik et al. [6]. The results show that our proposed model outperforms theirs in terms of delivering prioritized items over several time periods. 相似文献
18.
基于供应链一体化的物流快速反应特点分析 总被引:1,自引:0,他引:1
供应链一体化下物流运作的目的是要快速地满足顾客多变的需求。实现物流的快速反应,要实现物流的高效运作,就必须分析供应链一体化下的物流快速反应特点。作者从快速反应的定义阐述入手,论述了供应链一体化下的物流运作为何强调快速反应.进而分析了供应链一体化下的物流快速反应特点。 相似文献
19.
供应链管理是当今的一个重要管理模式,而物流又是供应链管理的核心。供应链管理模式的特点决定了对物流进行跟踪的必要性和可行性。因此本文对跟踪系统进行了初步的探讨。文中首先分析了供应链管理模式的特点及其对物流的影响,然后对物流跟踪的必要性,可能性,跟踪的意义,功能进行了分析,并对总体的跟踪流程和系统结构进行了初步的设计。 相似文献
20.
物流是现代企业流通环节的重要实现形式,而供应链是企业得以运行的初始阶段,具有支配企业运行周期与进度的地位,供应链物流结构的合理性和整体质量关系到企业发展的顺畅性和稳定性,从供应链系统理论的角度,探讨该模式下物流会计核算的运用及其优化路径。 相似文献