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RISImproved Accuracy of Area Objects in a Geographic Information System Based on Helmert’s Variance Component Estimation Method
Publisher: American Society of Civil Engineers
Abstract: Helmert’s variance component estimation method based on a least-squares adjustment of condition equations is presented, in which the registered area and the coordinates of a cadastral parcel are assumed to be different and ...
Formation of an Organic–Inorganic Hybrid Network Structure by In Situ Polymerization of Silicone to Protect Cultural Heritage Stonework
Publisher: ASCE
Abstract: Yujia Memorial Archway in Jixian County, Hunan Province, can be considered a typical weathered stone artifact. Different ratios of 3-glycidyl ether propyl trimethoxy silane (GPTMS), 3-amino propyl triethoxy silane (ATS), ...