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2 Foundations of Computing and Decision Sciences

2 2022

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Design a Multi Period Closed-Loop Supply Chain Program to Supply Recycled Products

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Syah R. , Chetthamrongchai P. , Thuc D. C. , Yuminarti U. , Murtini S. , Iswanto A. H. , Vasilieva N. K. , Kireeva N. , Aravindhan S.

Foundations of Computing and Decision Sciences

2022

tom Vol. 47, No. 2

163--176

Over the course of the last decades, closed-loop supply chains (CLSC) and reverse logistics issues have attracted increasing attention owing to strict environmental laws, social responsibilities, economic interests, and customer awareness. Hence, the issue of closed-loop supply chain and reverse logistics has emerged as a field of research in the new era. This issue has received much attention because it allows recyclable products to return to their original cycle. Therefore, this study primarily intends to present a mathematical model for designing a supply chain network for recycled products. The multi-stage and multi-period objective function of the closed-loop supply chain is presented to meet that aim. In this chain, dismantling, recycling, and disposal centers are considered. The objective function is to reduce the total cost of the closed-loop supply chain. The results of optimizing the mathematical model demonstrate that this model has the necessary efficiency for use in recycled products.

Designing a Green Supply Chain Transportation System for an Automotive Company Based On Bi-Objective Optimization

100%

Syah R. , Nasution M. M. , Shol V. V. , Kireeva N. , Jalil A. T. , Chen T.-C. , Aravindhan S. , Abood E. S. , Alkaim A. F.

Foundations of Computing and Decision Sciences

2022

tom Vol. 47, No. 2

193--207

Recently, due to the increasing awareness of communities regarding environmental issues and environmental regulations, companies have evolved to provide products with lower prices and better quality to retain and attract customers. Economics should also pay attention to environmental goals. Therefore, it is essential to provide a supply chain model that can consider both economic and environmental objectives. In this paper, the green direct supply chain network is presented to an automotive company, including five suppliers, primary warehouses, manufacturing plants, distributors, and sales centers. The objectives of this model are to minimize the total cost of construction, transportation, and the amount of carbon dioxide emissions during forwarding network transportation at all levels. The proposed model is also drawn using the weight method, which is one of the methods for solving multi-objective problems, and the solution of the model part. Ultimately, it has been discussed how much the automobile company should focus on reducing carbon dioxide so that managers can determine the best solutions from the Pareto border according to their organization's priorities, which can be environmental or financial.