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Design of a Supply Chain-Based Production and Distribution System Based on Multi-Stage Stochastic Programming

Iswanto A. Heri, Alazzawi Fouad Jameel Ibrahim, Guerrero John William Grimaldo, Ahmed Alim Al Ayub, Chetthamrongchai Paitoon, Vladimirovich Kabanov Oleg, Kadhim Mustafa M., Jawad Mohammed Abed, Surendar A.

Foundations of Computing and Decision Sciences

2023

Vol. 48, No. 3

357--370

Supply chains are one of the key tools in optimizing production and distribution simultaneously. However, information uncertainty is always a challenge in production and distribution management. The main purpose of this paper is to design a two-echelon supply chain in a multi-cycle state and in conditions of demand uncertainty. The task includes determining the number and location of distribution centers, planning capacity for active distribution centers, and determining the amount of shipments between different levels so that the total costs of the chain are minimized. Uncertainty is applied through discrete scenarios in the model and the problem is formulated by multi-stage stochastic programming method in the form of a mixed integer linear model. The results acquired using two indicators called VMS and VSS demonstrated that modeling the supply chain design problem with the multi-stage stochastic approach can result in significant costs reduction. Plus, utilizing mathematical expectation can generate misleading results, therefore resulting in the development of supply chain designs incapable of satisfying demand due to its overlooked limitations.

Design of water supply networks for water transfer to the urban area Case study : Balikpapan city

Huy Dinh T.N., Dwijendra Ngakan K.A., Poltarykhin Andrey, Suksatan Wanich, Nahi Nooraldeen S., Mahmudiono Trias, Hai Nguyen T., Kadhim Mustafa M., Singh Krishanveer, Ahmed Alim A.A.

Journal of Water and Land Development

2022

no. 54

251--254

The growing population and the development of industries in all countries of the world have created a very important and complex issue for water supply to cities. Today, many parts of the world are facing the problem of water shortage and this problem cannot be easily solved. In addition to the proper use of water resources and preventing the loss of natural water, the establishment of regional water supply networks is effective in meeting the future needs of the people. A water distribution network (water supply network) is a set of interconnected pipelines used to transport and distribute water in a complex. In designing the water distribution network, factors such as the type of water distribution network, water pressure, water velocity, design flow, minimum pipe diameter, pipe material and many other factors should be considered. In this study, we have tried to design the water supply network of a part of Balikpapan city in Indonesia. The design method led to the determination of pressure values in the connection nodes, pipe diameters, flow rate and velocity in the pipes. All the existing criteria are considered in the design of the water supply network. Although this study has been implemented for a specific study area, it can be of great help to designers in designing the water supply network.

Design a Mathematical Planning Approach to Optimize the Supply Chain Taking Into Account Uncertainties In Distributors

Chetthamrongchai Paitoon, Dayupay Johnry, Alshiqi Sevdie, Alghazali Tawfeeq Abdulameer Hashim, Iswanto A. Heri, Cavaliere Luigi Pio Leonardo, Al-Nussairi Ahmed Kateb Jumaah, Mohmmed Karrar Hatif, Kadhim Mustafa M.

Foundations of Computing and Decision Sciences

2022

Vol. 47, No. 4

409--420

With the globalization of markets and increasing competition in global markets, the attempts of organizations to survive in this market has increased and has resulted in the emergence of the philosophy of Supply Chain Management. There is uncertainty in the reliability of supply chain facilities for reasons such as natural disasters, terrorist attacks, labor errors, and weather conditions. Therefore, when making strategic decisions, the system will continue to operate with minimal damage. Over the course of this study, the uncertainty of supplier layers in the supply chain has been modeled. To meet that aim, the issue of supply chain, including producers, warehouses, suppliers and consumers are considered. To calculate the cost of breakdowns due to the non-functioning of distributors, the scenario-building method has been utilized. Finally, the desired model is solved with Gomez software and the results are presented. The result of the study demonstrate the efficiency of this model in the facility location decision-making in supply chains.