Geodesic
Production Inventory Models for Deteriorative Items With Three Levels of Production and Shortages
Yugoslav journal of operations research, Tome 27 (2017) no. 4, p. 499 .

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In this paper, three level production inventory models for deteriorative items are considered under the variation in production rate. Namely, it is possible that production started at one rate, after some time, switches to another rate. Such a situation is desirable in the sense that by starting at a low rate of production, a large quantum stock of manufacturing items at the initial stage are avoided, leading to reduction in the holding cost. The variation in production rate results in consumer satisfaction and potential profit. Two levels of production inventory models are developed, and the optimum lot size quantity and total cost are derived when the production inventory model without shortages is studied first and a production inventory model with shortages next. An optimal production lot size, which minimizes the total cost, is developed. The optimal solution is derived and a numerical example is provided. The validation of the results in this model was coded in Microsoft Visual Basic 6.0.
Classification : 90B05
Keywords: EPQ, Deteriorative Items, Cycle Time, Demand, Three Levels of Production, Optimality 
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     author = {Chickian C. Krishnamoorthi and C. K. Sivashankari},
     title = {Production {Inventory} {Models} for {Deteriorative} {Items} {With} {Three} {Levels} of {Production} and {Shortages}},
     journal = {Yugoslav journal of operations research},
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Chickian C. Krishnamoorthi; C. K. Sivashankari. Production Inventory Models for Deteriorative Items With Three Levels of Production and Shortages. Yugoslav journal of operations research, Tome 27 (2017) no. 4, p. 499 . http://geodesic.mathdoc.fr/item/YJOR_2017_27_4_a7/