The EOQ model with single ramp-type demand based on the advanced booking discount and two stage ordering

An inventory model with advanced booking discount and two stage ordering is established under conditions of the finite planning period and single ramp-type demand function. The existence and uniqueness of the model's optimal solution is discussed. The algorithm of the solution and numerical experiments for the model are given. With the practical problems in different parameters, the optimal solution is obtained in comparison to must be through the optimal solutions of these two models from the result of the numerical example.