This paper studies complexities of multiple demands vehicle routing problems (MVRP).

本文研究了多重运输调度问题的计算复杂性。

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In chapter 4, we research models and algorithms of vehicle routing problems with stochastic time.

第4章研究了随机旅行时间车辆路径问题的模型和算法。

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In the dissertation, the vehicle routing problems (VRP) with transshipment points are mainly studied.

本文主要对带有转运中心的各类车辆组合运输问题进行了研究。

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"As more networks develop, and existing ones grow, the problems of information routing and traffic flow become increasingly more difficult to solve, " says Dr Raine.

BBC: Mapping the flight of the bumblebee

Problems with the order-routing system have caused delays on two other occasions this year.

CNN: Software glitch forces brief shutdown of Nasdaq

While the technique of routing mail via mail servers of net service firms might cause problems for those that use blacklists and block lists it did not mean that other techniques for stopping spam lost their efficacy too.

BBC: PC hard drive, Eyewire