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Mushroom Supply Chain Network Design Using Robust Optimization Approach under Uncertainty
Sen Xie,Akbar Formonov,Abdulqader Abdulrahman Thapit,Mohammed Hayder Alshalal,Mostafa Kamel Shakir Obeis,R. Sivaraman,Abdullah Hasan Jabbar,Purnima Chaudhary,Yasser Fakri Mustafa 대한산업공학회 2022 Industrial Engineeering & Management Systems Vol.21 No.3
Nowadays, attention to sustainable food security and health and the incentive to increase revenue, has led many governments and policymakers to pay special attention to the effective performance of the agricultural supply chain. The positive effects of paying attention to agricultural supply chain management can be easily seen in job creation in urban and rural areas, easy access to the market for agricultural retailers and the appropriate relationship between small and medium businesses. This study examines the complete supply chain network of agricultural products (mushroom industry) in uncertain conditions. The model is presented in the form of two general objectives; the first objective refers to minimizing network costs, and the second objective to minimizing network environmental pollutants. Also, the proposed model is in uncertain conditions, and to overcome the uncertainty model, the optimization approach has been used. Finally, due to the multi-objective nature of the proposed model, the reinforced epsilon-constraint solution approach is used. Simulated data has been utilized to validate the proposed robust model. Given the results, the recycling rate of the consumed compost was above 0.4, demonstrating that applying a closed-loop supply chain network is logical, and establishing a recycling center could be economically justified.
Oguz Dogan,Fatih Karpat,Celalettin Yuce,Necmettin Kaya,Nurettin Yavuz,Hasan Sen 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.6
This paper presents a methodology for re-designing a failed tractor transmission component subjected to cyclic loading. Unlike other vehicles, tractors cope with tough working conditions. Thus, it is necessary to re-design components by using modern optimization techniques. To extend their service life, we present a design methodology for a failed tractor clutch power take-off finger. The finger was completely re-designed using topology and shape optimization approach. Stress-life based fatigue analyses were performed. Shape optimization and response surface methodology were conducted to obtain optimum dimensions of the finger. Two design parameters were selected for the design of experiment method and 15 cases were analyzed. By using design of the experiment method, three responses were obtained: Maximum stresses, mass, and displacement depending on the selected the design parameters. After solving the optimization problem, we achieved a maximum stress and mass reduction of 14% and 6%, respectively. The stiffness was improved up to 31.6% compared to the initial design.