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Forest vehicle routing is an important step in optimization of forest transportation system to minimize the total cost. To perform this work, we propose a mathematical model and use two metaheuristics approaches, a reactive tabu search and an extended great deluge. The objective is to minimize the total cost and respecting the time window of all customers which is sometime important in this field...
Delay tolerant networks (DTNs) are a class of emerging networks that experience frequent and long-duration partitions. Multicast supports the distribution of data to a group of users, a service needed for many potential DTN applications, due to the unique characteristic of frequent partitioning in DTNs, multicasting in DTNs is a considerably different and challenging problem. In this paper, The mathematics...
This study improves the original model of vehicle routing problem by adding some strains such as time windows, volume, weight, as parameters into the model. The model is adjusted to an mutilate-goals vehicle scheduling problem based on the mutilate-goals programming, and study on how the time-windows and time-distinction affects the delivering planning. We use GAMS to simulate and solve this problem.
Recently, fourth party logistics (4PL) is receiving more and more attentions in manufacturing and retail industries. However, the research on the fourth party logistics routing problems (4PLRP) has just begun. In this paper, the mathematical model of the point to point single task path optimization of 4PLRP with time windows (4PLRPTW) is established based on multi-graph. The objective is to find minimum...
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