局地气候分区(Local Climate Zone,LCZ)方案是一种新的城市高分辨率土地利用分类(High Resolution Land Use Classification,HRLUC)数据集构建方法。基于LCZ分类体系制作了中国63个城市的具有建筑物分类的HRLUC数据集。原数据采用2017—...局地气候分区(Local Climate Zone,LCZ)方案是一种新的城市高分辨率土地利用分类(High Resolution Land Use Classification,HRLUC)数据集构建方法。基于LCZ分类体系制作了中国63个城市的具有建筑物分类的HRLUC数据集。原数据采用2017—2019年的Landsat 8卫星数据及高分辨Google Earth影像,涵盖51933个训练样本(>100 m×100 m)和15841个验证样本。精度评估结果表明:中国63个城市的HRLUC数据集总体质量较好,总体准确率为72%~92%,平均准确率为81%;城市用地类型准确率为59%~82%,平均准确率为72%;自然覆盖类型准确率为71%~100%,平均准确率为89%。与同类研究相比,本研究的城市用地类型准确率较高。此外,基于原始LCZ分类体系,增加修建区为中国城市LCZ分类的基本类型;63个城市中有24个城市的修建区占比超过5%,该类下垫面多位于城郊结合部。展开更多
精细的人口分布数据能刻画出行政单元内部细节的人口空间分布信息,为城市规划、灾害评估等相关研究和应用提供有效数据支撑。利用房屋建筑及高德兴趣点(point of interest,POI)数据提取建模因子,结合随机森林模型获取了武汉市2015年常...精细的人口分布数据能刻画出行政单元内部细节的人口空间分布信息,为城市规划、灾害评估等相关研究和应用提供有效数据支撑。利用房屋建筑及高德兴趣点(point of interest,POI)数据提取建模因子,结合随机森林模型获取了武汉市2015年常住人口50 m空间化数据集。结果表明,相较于WorldPop数据集结果,所提出方法的结果在武汉市高、中、低3种不同人口密度社区单元均具有更高的拟合精度。展开更多
The preservation of a historical building, whatever its architectural and/or artistic value, is more successful when undertaken with a deep understanding of the building＇s history, development, materials and construc...The preservation of a historical building, whatever its architectural and/or artistic value, is more successful when undertaken with a deep understanding of the building＇s history, development, materials and construction techniques. The preliminary phase of any restoration intervention must start with data acquisition regarding the characteristics and conditions of the building, including a survey of significant alterations. In a great number of cases, restorations are not respectful of the building＇s static efficiency, so its static requirement is weakened. In fact, a very high percentage of instances in which a restoration effort results in building damage is attributable to such modification＇s indifference to the structural balance of a structure, as consolidated over time. This study focuses on the restoration intervention on two trilobate pillars that separate the central space from the presbytery in the Cathedral of Matera, located in southern Italy. Through the use of sonic tests - carried out despite the complexity of the shape of the building and constructive elements that characterize these pillars -- it was possible to show the effectiveness of the implemented intervention, highlighting critical points and weaknesses. The research aims to show how -- despite the complexity of some structural elements of a building -- in-depth knowledge of a structure＇s structure and history is essential to for the success of restoration interventions, which are respectful of a building＇s type and material peculiarities.展开更多
文摘精细的人口分布数据能刻画出行政单元内部细节的人口空间分布信息,为城市规划、灾害评估等相关研究和应用提供有效数据支撑。利用房屋建筑及高德兴趣点(point of interest,POI)数据提取建模因子,结合随机森林模型获取了武汉市2015年常住人口50 m空间化数据集。结果表明,相较于WorldPop数据集结果,所提出方法的结果在武汉市高、中、低3种不同人口密度社区单元均具有更高的拟合精度。
文摘The preservation of a historical building, whatever its architectural and/or artistic value, is more successful when undertaken with a deep understanding of the building＇s history, development, materials and construction techniques. The preliminary phase of any restoration intervention must start with data acquisition regarding the characteristics and conditions of the building, including a survey of significant alterations. In a great number of cases, restorations are not respectful of the building＇s static efficiency, so its static requirement is weakened. In fact, a very high percentage of instances in which a restoration effort results in building damage is attributable to such modification＇s indifference to the structural balance of a structure, as consolidated over time. This study focuses on the restoration intervention on two trilobate pillars that separate the central space from the presbytery in the Cathedral of Matera, located in southern Italy. Through the use of sonic tests - carried out despite the complexity of the shape of the building and constructive elements that characterize these pillars -- it was possible to show the effectiveness of the implemented intervention, highlighting critical points and weaknesses. The research aims to show how -- despite the complexity of some structural elements of a building -- in-depth knowledge of a structure＇s structure and history is essential to for the success of restoration interventions, which are respectful of a building＇s type and material peculiarities.
