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Sarkar, Biswajit,Ahmed, Waqas,Kim, Namhun Elsevier 2018 Journal of Cleaner Production Vol.185 No.-
<P><B>Abstract</B></P> <P>In today's global market, supply chain players have to cooperate mutually for extra benefits, long lasting paybacks, and to control carbon emission for a clean environment. This study develops the three-echelon sustainable supply chain model in the context of multi-level trade credit and single-setup-multiple-delivery policy for mutual coordination in financial support and reducing carbon emissions. These joint effects will benefit the firms for interim financing as well as minimize carbon emission for a clean environment. This model quantifies the effects of the environmental regulations and trade credit period under the single-setup-multiple-delivery policy. The supplier produces semi-finished items and transports it to the manufacturer, the manufacturer transform these semi-finished items into final products. These finished products finally transported to multi-retailer. The shipments are permitted to proceed from the particular lot during production instead after completing the entire lot This strategy save the environment by minimizing carbon emission. Additionally, a multi-level trade credit policy is considered in this model for short-term investment. An algebraic approach is used to derive a closed form optimal result for the designed model. This non-derivative method provides the effective solution algorithm. The main contribution of this study is to minimize the sustainable supply chain cost of the system by jointly considering the multi-level delay-in-payment, variable carbon emission cost, and variable transportation cost under the single-setup-multi-delivery policy. The study presents an optimal solution for the individual scenario and also derived a comparison between them with a numerical example. The findings directed that implementation of multi-level trade credit under single setup-multiple-delivery improves the economic and environmental performance of three-echelon supply chain. Sensitivity analysis of the developed study is also illustrated to prove the real practice.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Sustainability issues with multi-level trade credit and SSMD policy are considered. </LI> <LI> Synchronize mechanism is used to set the cycle time for each stage. </LI> <LI> Reduction in carbon emission cost by controlling the cycle time. </LI> <LI> Joint effect improves the economic and environmental performance of supply chain. </LI> <LI> Total cost is minimized by derivative-free method for effective solution algorithm. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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>
Corporate social responsibility and revenue sharing policy for a dual-channel buyback contract
Biswajit Sarkar,Rekha Guchhait 대한산업공학회 2021 대한산업공학회 춘계학술대회논문집 Vol.2021 No.6
Industries nowadays are participating in social development to improve the standard of living. There are several criteria to balance economic growth and social development. Besides, the pattern of business is changing every day based on the circumstance. The use of online channels among people is increasing gradually. A manufacturer opens both possibilities of the traditional channel as well as the online channel. In the traditional channel, the manufacturer is in a buyback contract with the retailer. The manufacturer is in direct contact with customers through the online channel. The manufacturer uses returned products from the retailer for social welfare through corporate social responsibility. For the coordination business, the manufacturer shares revenue with the retailer. Stackelberg’s game strategy is used to find the leader and follower of the supply chain in the non-coordination case. The classical optimization technique finds optimal solutions. An example is given to validate the mathematical model numerically.
Optimizing production-inventory and pricing for bundle products in a two-stage supply chain
Biswajit Sarkar,Sahar Sohani 대한산업공학회 2021 대한산업공학회 춘계학술대회논문집 Vol.2021 No.6
In this paper, production, inventory, transportation, and pricing policies in a two-stage supply chain consisting of one vendor and one buyer are investigated. The supply chain contains two products that can be sold individually and jointly in a package called Product Basket. Demand for products depends on the price of the customer's reservation, which is the maximum price the customer is willing to pay for a product. The proposed mathematical model is presented in both traditional and integrated supply chains. In the integrated model the joint total profit of both the vendor and the buyer is optimized and it finds out the optimal ordering, shipment, and pricing policies. Precision solving algorithms and GAMS programming software are applied to solve the model. Finally, sensitivity analysis is performed by comparing the results of two traditional and integrated supply chains as well as analyzing the two different sale strategies and management practical solutions are provided.