A Possibilistic Reliable and Responsive Closed Loop Supply Chain Network Design Model under Uncertainty

2017 ◽  
Vol 16 (04) ◽  
pp. 317-338 ◽  
Author(s):  
Alireza Hamidieh ◽  
Mohamadreza Fazli-Khalaf

Reliability of supply chain networks is an important issue affecting customer satisfaction and profitability of organizations. However, occurrence of disruptions such as flood, earthquake and fire could ruin performance of supply chains. Uncertainty of parameters is another important factor that could lower quality of long-term plans of companies. Hence, uncertainty of parameters and disruption strike are important issues adversely influencing reliability of networks. Also, responsiveness of supply chains is a significant matter that should be considered carefully while designing distribution networks. Responsiveness could increase customer loyalty and satisfaction that could result in increasing market share of companies and their long-term planned benefit. Regarding alluded matters, the aim of this paper is designing a reliable forward-reverse supply chain network that minimizes total costs of network design along with maximization of total responsiveness of distribution network. Extended closed-loop network is capable of considering environmental issues by caring about end-of-life products. Designing reverse supply chain network aside with forward ones could decrease bad environmental impact of end-of-life products. Notably, to cope with adverse effects of disruptions, a scenario-based approach is suggested that enables considering partial and complete disruption of capacity of facilities. Additionally, an effective possibilistic programming method is applied to appropriately control uncertainty of parameters. As quality of raw materials is important to produce high-quality products, minimum acceptable quality level of raw materials is considered in extended model to maximize customer satisfaction. Finally, it should be noted that designed test problems show appropriate performance of suggested model and its applicability in real world case studies. Extended model is solved regarding different risk-aversion levels and sensitivity analysis is performed for different parameters of network design that shows effectual performance of proposed model.

2021 ◽  
Vol 13 (11) ◽  
pp. 6041
Author(s):  
Chui-Yu Chiu ◽  
Chen-Yang Cheng ◽  
Ting-Ying Wu

Due to increasing environmental awareness, companies have started embracing the green supply chain concept to reduce waste of resources. Based on this increased awareness, an integrated green closed-loop supply chain has been developed, which integrates the forward supply chain and reverse supply chain. The reverse supply chain follows the same path as the forward supply chain in the reverse direction to recycle used products. Due to the uncertain quality of used products, not all products can be selected for recycling and reproduction, as the reduced yield might decrease the overall net income in the supply chain. The study develops an evaluation model to consider government subsidy, used product recycling rate, and quality of the used products to explore their impacts on the entire system. The results show that when the reproducibility rate of used raw materials decreases, the net income would also decrease accordingly. Furthermore, when government subsidy increases, the net income of the supply chain also increases accordingly. Similarly, when the recycling rate of used products increases, the net income also increases. As government subsidy affects the net income more than the recycling rate of used products, this research concludes that government subsidy is a key factor in the green closed-loop supply chain.


Author(s):  
Nasrin Mohabbati-Kalejahi ◽  
Alexander Vinel

Hazardous materials (hazmat) storage and transportation pose threats to people’s safety and the environment, which creates a need for governments and local authorities to regulate such shipments. This paper proposes a novel mathematical model for what is termed the hazmat closed-loop supply chain network design problem. The model, which can be viewed as a way to combine several directions previously considered in the literature, includes two echelons in the forward direction (production and distribution centers), three echelons in the backward direction (collection, recovery, and disposal centers), and emergency response team positioning. The two objectives of minimizing the strategic, tactical, and operational costs as well as the risk exposure on road networks are considered in this model. Since the forward flow of hazmat is directly related to the reverse flow, and since hazmat accidents can occur at all stages of the lifecycle (storage, shipment, loading, and unloading, etc.), it is argued that such a unified framework is essential. A robust framework is also presented to hedge the optimization model in case of demand and return uncertainty. The performance of both models is evaluated based on a standard dataset from Albany, NY. Considering the trade-offs between cost and risk, the results demonstrate the design of efficient hazmat closed-loop supply chain networks where the risk exposure can be reduced significantly by employing the proposed models.


2021 ◽  
pp. 107191
Author(s):  
Subramanian Pazhani ◽  
Abraham Mendoza ◽  
Ramkumar Nambirajan ◽  
T.T. Narendran ◽  
K. Ganesh ◽  
...  

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