Robust optimization
Shima Roosta; Seyed Milad Mirnajafi Zadeh; Hamid Bazargan Harandi
Abstract
Purpose: Location-Routing Problem (LRP) is a strategic supply chain design problem aimed at meeting customer demands. LRPs involve selecting one or more depot sites from a set of potential locations and determining the best routes to connect them to demand points. With the rising awareness about the ...
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Purpose: Location-Routing Problem (LRP) is a strategic supply chain design problem aimed at meeting customer demands. LRPs involve selecting one or more depot sites from a set of potential locations and determining the best routes to connect them to demand points. With the rising awareness about the environmental impacts of transportation over the past years, using green logistics to mitigate these impacts has become increasingly important.Methodology: To compensative a gap in the literature, this paper presents a robust bi-objective Mixed-Integer Linear Programming (MILP) model for the Green Capacitated Location-Routing Problem (G-CLRP) with demand uncertainty and the possibility of failure in depots and routes.Findings: The final result of this robust multi-objective model is to set up the depots and select the routes that offer the highest reliability (maximizing network service) while imposing the lowest cost and environmental pollution. The paper also provides a numerical analysis and a sensitivity analysis of the solutions of the model.Originality/Value: Determining backup depots and increasing network serviceability for LRPs.
supply chain management analyzing/modelling
seyyedmoein baharisaravi; Reza Hasan Zadeh
Abstract
Dam failure is one of the main and most important consequences of dam safety factors and the prospect of dam failure is a matter of concern in dam construction issues. Engineering science and experience in dam construction show that, on average, less than one dam annually breaks through the tens of thousands ...
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Dam failure is one of the main and most important consequences of dam safety factors and the prospect of dam failure is a matter of concern in dam construction issues. Engineering science and experience in dam construction show that, on average, less than one dam annually breaks through the tens of thousands of large dams in the world. For this purpose, this paper proposes a model to simulate the occurrence of an accident and perform logistic planning with the aim of improving logistical measures and responding to crisis situations in order to achieve the best performance in times of crisis. In this paper, we try to illustrate the failure of Shahid Rajaee Dam in Sari using simulation technique and analyze its subsequent consequences, in order to use the output information as a basic mathematical modeling information. . So at the end of the research we can clearly select the optimal routes with the least cost and transportation time.The innovation of the present study is to use a three-objective model to reduce shipping, warehousing and relief costs in the shortest time possible to manage the crisis using this model.