Abstract Estimating the solution value of transportation problems can be useful to assign customers days for multi-period vehicle routing problems, or make customer selection decisions very fast (e.g., within an online environment). In this paper, we apply several regression methods predict total distance traveling salesman problem (TSP) and (VRP). We show that estimated fairly accurate using s...

tan films with different n2 partial pressure were deposited on 304 stainless steel using the magnetron sputtering method. the effect of gas pressure on the mechanical property, morphology and phase structure of the films is investigated by x-ray diffraction (xrd), atomic force microscopy (afm), microhardness testing, friction coefficient measurements, and wear mechanism study. the xrd results c...

In this study, we develop a collaborative inventory system consisting of one supplier and one buyer. The objective is to maximize the total profit of the whole system when shortage caused by the imperfect quality can be completely backordered. To ensure mutual benefits to every player, a negotiation mechanism is incorporated to share the profit between both players according to their contributi...