Abstract: This paper investigates a deterministic inventory model in which demand follows a seasonal pattern that repeats itself after a short time interval,and ordering cycle is integral times of demand cycle,the quantities that can't be filled imply the delayed ordering policy.An algorithm is analyzed for determining an optimal reorder point,a shortage length and an order quantity so that the total profile per unit time is maximized.At last,we propose an example to see the possibility of this algorithm.

Key words: deterministic model, delayed ordering, forecast technology, inventory control