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This article develops a mathematical model and heuristic algorithm to design recreational boating mooring fields. The boating industry is important to the Florida economy, and boat storage is becoming a concern among those in the industry. The mooring field design problem is formulated to maximize the total number of boat feet moored in the mooring field. In the model, we allow two adjacent moorings to overlap, which introduces a risk that under certain conditions the boats on these moorings could contact each other. We identify the conditions when contact is possible and quantify the probability of contact. The mooring field design problem is formulated as a nonlinear mixed‐integer programming problem. To solve the problem, we decompose it into two separate models, a mooring radii assignment model and a mooring layout model, which are solved sequentially. The first is solved via exhaustive enumeration and the second via a depth‐first search algorithm. Two actual mooring fields are evaluated, and in both cases our model leads to better layouts than ones experts developed manually. The mooring field design model rationalizes the mooring field design and shows that in one case by increasing the risk from 0 to 1%, the mooring efficiency increases from 74.8% to 96.2%. © 2009 Wiley Periodicals, Inc. Naval Research Logistics, 2009 相似文献
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段瑛 《兵团教育学院学报》2010,20(2):77-79
随着新疆高饺的校园网建设逐渐由硬件基础建设阶段转入软件和资源建设阶段,本文就新疆高校校园网建设的现状及出现的一些问题做了探讨和分析,并对如何加强高校校园网建设,充实网络教学资源,强化校园网知识培训,提高师生应用能力等一系列问题提出了建议,以期为新疆高校的信息化建设提供一些借鉴。 相似文献