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Significance of Autonomated Inspection for a Renewable Energy Production System
Mitali Sarkar,Yong Won Seo(서용원) 한국SCM학회 2021 한국SCM학회지 Vol.21 No.3
With the changing lifestyle of humans, the use of technologies increases, thus increasing the necessity of energy demand. Owing to limited nonrenewable energy sources, the demand for renewable energy is growing gradually. On the other hand, the waste generated increases with the increasing population rate. Wastes can be a useful source of energy demand, and environmental pollution can be reduced. This study explains a renewable energy production system. The proposed production system uses wastes as a source of raw material. Wastes are collected and transported from the collection center of a city to produce renewable energy. An autonomated inspection policy is used in the production system. The random rate of unusable wastes is scraped from the system, and the rest are sent for energy production. The total cost of the energy conversion plant is optimized analytically by a classical optimization method. Three numerical examples are given for uniform, triangular, and beta distribution of random scrap rate. The results show that adopting beta distribution for the proposed study is required to obtain the maximum amount of renewable energy at the minimum cost. The transportation cost is found as the most sensitive cost parameter among all cost parameters. The proposed study fulfills both the aims of renewable energy production and waste management.
Maximizing Profit of Supply Chain with Complementary Products using Game Theory
Mitali Sarkar,Young Hae Lee,Biswajit Sarkar 대한산업공학회 2015 대한산업공학회 추계학술대회논문집 Vol.2015 No.11
This paper describes about two-echelon supply chain model with two manufacturers and one common retailer. Two types of complementary products are produced by two manufacturers and the common retailer buys products separately using reservation prices and bundles them for sale. The demand of manufacturers and retailer are assumed as stochastic in nature. The profit of two manufacturers and retailer are maximized by using Stackelberg game policy. By applying game theoretical approach, several analytical solutions are obtained. An illustrative numerical example is derived and some managerial insights are given to illustrate the model.
Sarkar, Mitali,Hur, Sun,Sarkar, Biswajit Hindawi Limited 2017 Mathematical problems in engineering Vol.2017 No.-
<P>Recently, a major trend is going to redesign a production system by controlling or making variable the production rate within some fixed interval to maintain the optimal level. This strategy is more effective when the holding cost is time-dependent as it is interrelated with holding duration of products and rate of production. An effort is made to make a supply chain model (SCM) to show the joint effect of variable production rate and time-varying holding cost for specific type of complementary products, where those products are made by two different manufacturers and a common retailer makes them bundle and sells bundles to end customers. Demand of each product is specified by stochastic reservation prices with a known potential market size. Those players of the SCM are considered with unequal power. Stackelberg game approach is employed to obtain global optimum solution of the model. An illustrative numerical example, graphical representation, and managerial insights are given to illustrate the model. Results prove that variable production rate and time-dependent holding cost save more than existing literature.</P>