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Dynamic planning under uncertainty for theater airlift operations

机译:剧院空运操作不确定时的动态规划

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摘要

In this thesis, we analyze intratheater airlift operations, and propose methods to improve the planning process. The United States Air Mobility Command is responsible for the air component of the world wide U.S. military logistics network. Due to the current conflict in Iraq, a small cell within Air Mobility Command, known as Theater Direct Delivery, is responsible for supporting ongoing operations by assisting with intratheater airlift. We develop a mathematical programming approach to schedule airlift missions that pick up and deliver prioritized cargo within time windows. In our approach, we employ composite variables to represent entire missions and associated decisions, with each decision variable including information pertaining to the mission routing and scheduling, and assigned aircraft and cargo. We compare our optimization-based approach to one using a greedy heuristic that is representative of the current planning process. Using measures of efficiency and effectiveness, we evaluate and compare the performance of these different approaches. Finally, we adjust selected parameters of our model and measure the resulting changes in operating performance of our solutions, and the required computational effort to generate the solutions.
机译:在本文中,我们分析了剧院内的空运操作,并提出了改善规划过程的方法。美国空中机动司令部负责全球美国军事后勤网络的空中部分。由于伊拉克当前的冲突,空中机动司令部内的一个名为“战区直接交付”的小队负责协助剧院内的空运来支持正在进行的行动。我们开发了一种数学编程方法来安排空运任务,以便在时间范围内接送优先运送的货物。在我们的方法中,我们使用复合变量来表示整个任务和相关的决策,每个决策变量包括与任务的路线和调度有关的信息,以及分配的飞机和货物。我们将基于优化的方法与使用代表当前计划过程的贪婪启发式方法进行比较。使用效率和有效性的度量,我们评估和比较这些不同方法的性能。最后,我们调整模型的选定参数,并测量解决方案的运行性能的变化,以及生成解决方案所需的计算量。

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