We consider periodic review perishable inventory systems with a fixed product lifetime. Unsatisfied demand can be either lost or backlogged. The objective is to minimize the long-run average holding, penalty, and outdating cost. optimal policy for these notoriously complex computationally intractable because of curse dimensionality. Hence, various heuristic replenishment policies are proposed i...

The objective of this paper is to investigate the potential added value being able relocate production capacity, relative fixed in a network multiple, geographically distributed manufacturing sites. There growing number examples capacity that can be relocated with modest amount effort; e.g., 3D printers, bioreactors for cell and gene manufacturing, modular units pharmaceutical intermediates. Su...

Inventory or material balance control is an important part of process control. In the literature, many rules have been proposed to help in designing such systems, but their justification is often unclear. The main contribution of this paper is to propose the more general local-consistency rule for evaluating inventory control systems. Consistency means that the steady-state mass balances (total...

We study a production-inventory system with two customer classes different priorities which are admitted to the following flexible admission control scheme. The inventory management is according base stock policy and arriving demand finds depleted lost (lost sales). analyse global balance equations of associated Markov process derive structural properties steady state distribution provide insig...

Low inventory, a crucial part of just-in-time (JIT) manufacturing systems, enjoys increasing application worldwide, yet the behavioral effects of such systems remain largely unexplored. Operations research (OR) models of low-inventory systems typically use a simplifying assumption that processing times of individual workers are independent random variables. This leads to predictions that low-in...

Inventory or material balance control is an important part of process control. In the literature, many rules have been proposed to help in designing such systems, but their justification is often unclear. The main contribution of this paper is to propose the more general localconsistency rule for evaluating inventory control systems. Consistency means that the steadystate mass balances (total, ...