MODEL OF INVENTORY CONTROL WITH A FIXED SIZE OF THE ORDER EXEMPLIFIED BY THE PHARMACIES
The mathematical model of the problem of inventory control with a fixed size of the order of the example of pharmacies. It is shown that modern pharmacies have to face the problems of delay of delivery, the actual demand for drugs often do not coincide with the projected deficit of certain medicines or is overstock and the write-off of drugs in connection with the expiration date. It is obvious that for the efficient management of by passes and determination of optimum stock management strategies must be considered likely not now the nature of the demand for reserves. It is shown that demand for drugs is a random variable. It is established that the demand for drugs in pharmacy institutions is well described by Poisson law. The analysis of the objectives of inventory management under conditions of probabilistic demand for drugs, it is shown that a strategy of stock management fixed order size can be described using queueing theory. Delivered and re-Shen the problem of finding optimal inventory control strategy with a fixed size of the order. Numerical example find the optimal inventory control strategy of the Les-drug means.