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Emergency airport site selection using global subdivision grids 被引量:2
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作者 Bing Han Tengteng Qu +2 位作者 Zili Huang Qiangyu Wang Xinlong Pan 《Big Earth Data》 EI 2022年第3期276-293,共18页
The occurrence of large-magnitude disasters has significantly aroused public attention regarding diversified site selection of emergency facilities.In particular,emergency airport site selection(EASS)is highly complic... The occurrence of large-magnitude disasters has significantly aroused public attention regarding diversified site selection of emergency facilities.In particular,emergency airport site selection(EASS)is highly complicated,and relevant research is rarely conducted.Emergency airport site selection is a scenario with a wide spatiotemporal range,massive data,and complex environmental information,while traditional facility site selection methods may not be applicable to a large-scale time-varying airport environment.In this work,an emergency airport site selection application is presented based on the GeoSOT-3D global subdivision grid model,which has demonstrated good suitability of the discrete global grid system as a spatial data structure for site selection.This paper proposes an objective function that adds a penalty factor to solve the constraints of coverage and the environment in airport construction.Through multiple iterations of the simulated annealing algorithm,the optimal airport construction location can be selected from multiple preselected points.With experimental verifications,this research may effectively and reasonably solve the emergency airport site selection issue under different circumstances. 展开更多
关键词 Emergency airport site selection global subdivision grids GeoSOT-3D simulated annealing algorithm penalty function
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面向地理对象多尺度表达的剖分编码方法研究 被引量:7
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作者 杨宇博 程承旗 宋树华 《地理与地理信息科学》 CSSCI CSCD 北大核心 2010年第5期33-36,共4页
现有模型对影像数据中的地理对象进行多尺度表达很困难,鉴于全球剖分模型在对地理对象表达时所具备的全球唯一性、层次性、多尺度性、编码具有地学含义等特点,提出了面向地理对象多尺度表达的剖分编码方法,目的是对地理对象赋予统一的... 现有模型对影像数据中的地理对象进行多尺度表达很困难,鉴于全球剖分模型在对地理对象表达时所具备的全球唯一性、层次性、多尺度性、编码具有地学含义等特点,提出了面向地理对象多尺度表达的剖分编码方法,目的是对地理对象赋予统一的剖分编码,使编码具有地学含义和多尺度特性。实验证明,面向地理对象多尺度表达的剖分编码方法可以满足地理对象多尺度剖分化表达的需要,为新一代GIS解决地理信息"尺度鸿沟"问题,向用户提供"连续"、"自适应"的表达尺度奠定了基础。 展开更多
关键词 GIS 全球剖分模型 EMD模型 多尺度表达 剖分编码
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