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中文摘要：
应急设施的特殊性决定了应急设施布局作为特殊的设施布局问题，必须更加注重及时性。应急服务的级别决定应急布局模型的考虑因素，现实中往往同时布局多个层次的应急设施，本文基于一个P-中心重心的混合模型，建立了层次型应急设施布局模型。根据应急服务的真实情况，该模型对距离的测算进行了改进，以交通网络距离代替欧氏距离。最后，将其应用于上海市上海某区的医疗设施布局。
英文摘要：
The particularity of emergency facilities determines that emergency facility location, as a special type of facility location problem, must pay more attention to timeliness. According to the levels of emergency services, different factors are taken into account when modeling emergency facility location. Actually, there are often several levels of emergency facilities in our real life. This article proposes a hierarchical emergency facility location model based on a hybrid model of p -center and p -median model, in which a p - center model is applied to the lower level services and a p -median model is applied to the higher level services. In accordance with the real situation of emergency services, this model improves the distance measurement by replacing the Euclidean distance with transport network distance. Finally, the hierarchical emergency facility location model is applied to the medical facilities location in Putuo District of Shanghai.
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