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Ant colony algorithm offers us a effective method to look for shortest routing. This article aims at two goals, namely shortest rescue routing and shortest rescue time, and it sets up a multiple-objective vehicle routing problem(VRP) model. In order to increase speed of convergence, the article presents a new style of pheromone update-rank-based ant colony algorithm based on elite ant and improves...
Bus Rapid Transit System (Bus Rapid Transit, BRT) is a new type of transportation system. Mainly refers to own the appropriation right of way, seal movement, high-capacity vehicles, such as a series of features different from the traditional bus system. The development of BRT vehicles is an important measure to achieve sustainable urban traffic development. In this paper, BRT vehicles based on a set...
Coal is one of the main energy sources and the carriage of coals is inevitable in China. How to choose the modes between each cities is one of the key factors that decide the quality of the coal carriage. A model for that problem was formulated to be a mixed integer programming problem at first. Then, a Dynamic Programming algorithm was proposed to obtain the optimal combination strategy of transport...
This work describes the method of quality evaluation of cargo transportation based on the complex system of interrelated and interactive management components. The quality of the transportation service of the enterprises mostly depends on the conformity of the vehicles design to its operation conditions, nature of the transportation process, and convenience of loading and unloading works execution...
Traditionally, the vehicle routing problem is thought of as a pure forward or reverse logistics at the same node. In many practical situations, however, the vehicle is often required to simultaneously forward and reverse logistics at the same stop. Hence, the main objective of this paper is to develop a model with two-direction logistics at the same node in a VRP system which is defined FRVRP and...
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