Design of a sustainable closed-loop supply chain network for hazardous products under uncertainty with fuzzy robust optimization approach

Design of a sustainable closed-loop supply chain network for hazardous products under uncertainty with fuzzy robust optimization approach


Design of a sustainable closed-loop supply chain network for hazardous products under uncertainty with fuzzy robust optimization approach

نوع: Type: thesis

مقطع: Segment: masters

عنوان: Title: Design of a sustainable closed-loop supply chain network for hazardous products under uncertainty with fuzzy robust optimization approach

ارائه دهنده: Provider: mohammad mahmoudi nezhad

اساتید راهنما: Supervisors: D.R Amirsaman kheirkhah

اساتید مشاور: Advisory Professors:

اساتید ممتحن یا داور: Examining professors or referees: D.R.parvaneh samouei,D.R.vahid khodakarami

زمان و تاریخ ارائه: Time and date of presentation: July 10th 2023

مکان ارائه: Place of presentation: seminar of Industrial engineering

چکیده: Abstract: Due to increasing environmental pressure and economic benefits, reverse supply chain design for hazardous products becomes increasingly important and urgent.This research has been formed with the aim of designing a stable closed loop supply chain network, which takes into account all three dimensions of stability. Its goals are to minimize the costs of the entire system, minimize the harmful environmental effects and maximize the social effects. To ensure the effectiveness of the model, we solved an example in GAMS software and reported the results and performed a sensitivity analysis on sensitive parameters.The result is that the model in the fuzzy robust optimization mode for the sustainable closed loop supply chain of dangerous products may increase the costs, but the model in the uncertainty form is more compatible with the real world and the obtained model is in robust form .And also, with the increase in the amount of demand, we see an increase in the amount of objective functions, which means that the increase in demand causes an increase in the costs of the entire system and also causes an increase in the environmental effects, and also increases the amount of social effects, which actually increases the amount of employment.By increasing the return rate of products, it causes an increase in costs to the system, and it also causes more transportation and an increase in the amount of carbon dioxide, and in the third objective function, we see that it has caused an increase in employment.By increasing the robustness cost factor, we see an increase in the costs of the entire system.

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