Maintaining product quality and environmental performance are emerging concerns in modern competitive and transparent businesses. Many retailers separate perfect products from imperfect ones to ensure product quality and endeavor to achieve carbon dioxide (CO2) reduction through green technology investments and sustainable inventory planning. Product deterioration often badly hampers the retailing business; hence, suitable preservation technologies are used. In this study, we examined the optimization model of the selling price, investment, and replenishment planning to maximize the total profit. The proposed model considered the effect of a greater deterioration rate and discount price of imperfect products. Due to the high uncertainty in demand, a realistic holding cost was deliberated with a variable and constant part. Every time the retailer transports purchased items, greenhouse gases (GHGs), including CO2, are produced. Government regulations on CO2 minimization and customer awareness for greener products stimulate retailers to invest in energy-efficient green technology. This study simultaneously showed a harmonious relationship among the attributes of preservation technology, green technology investment, and discounts on defective items. Theoretical derivations were performed with numerical analysis.
The product life cycle of a deteriorating product is an important consideration in inventory management. This paper simultaneously investigates the optimum pricing and inventory decisions considering product life cycles under price-dependent demand and advance payment systems with a discount facility. A time-dependent holding cost is also introduced. The objective is to carefully balance the critical decision variables in order to maximize the total profit. Furthermore, the theoretical analysis validates the concavity of the profit function. A numerical example and sensitivity analysis are provided to show the characteristics of the model. The study shows that an advanced payment period, installment numbers, product’s maximum life cycle, purchasing cost and demand function significantly influence the total profit. This inventory model with a known product lifetime and advance payments can provide management insights to inventory manager in his/her strategic planning.
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