This paper addresses a new mixed integer nonlinear and linear mathematical programming economic lot sizing and scheduling problem in distributed permutation flow shop problem with number of identical factories and machines. Different products must be distributed between the factories and then assignment of products to factories and sequencing of the products assigned to each factory has to be d...

the objective of this research is to tackle the emerging problem of jointly determining theoptimal retail price, the replenishment cycle, and the cost of preservation technology investment from an integrated perspective among the supplier and the manufacturer. this paper deals an integrated single-manufacturer single-retailer supply chain model for deteriorating items under revenue sharing on p...

Market demand of the  perishable bakery  products are volatile. Hence, demand of such items are random variable. The most appealing demand distribution of such items is lognormal demand distribution. Using historical data, the parameters of lognormal distribution are obtained. But, there is a problem of overestimation or underestimation of the parameters. Fuzzy triangular numbers are used to ov...

This study considers the production and inventory management problem of a two-stage semiprocess production system. In case both production stages are physically connected it is obvious that materials are forced to flow. The economic lotsize depends on the holding cost of the endproduct and the combined change-over cost of both production stages. On the other hand this 'flow shop' is forced to p...

We develop a four-stage, serial supply chain inventory model with planned backorders. This supply chain model is formulated for the integer multipliers coordination mechanism, where firms at the same stage of the supply chain use the same cycle time and the cycle time at each stage is an integer multiplier of the cycle time used at the adjacent downstream stage. We develop an optimal replenishm...

The present study was carried out to investigate Goyal’s model (1985) and Teng’s model (2002) using the algebraic method to determine the optimal cycle time under delay payments. This paper provides algebraic approach that must be considered as a pedagogical advantage for explaining the inventory concept to students that lack knowledge of derivatives. This algebraic approach could therefore be ...

In today’s competitive world, the cost of high-tech products declines significantly over their life cycle. An inventory model for such products is developed for an ordering policy of raw materials, and finished goods which is delivered to the customer at a fixed interval of time in a fixed quantity. This model integrates the raw material inventory with the finished goods inventory along the sup...