Design on Geographical Multi-Scale 3D Symbol Library

Abstract

3D Geographic Information System (3D GIS); 3D symbol library; Modeling. Abstract. The 3D symbol is the basic approach to represent geographic themes in 3D GIS. In this paper, a multi-scale data model for 3D symbol library is designed to solve the problems in the organization, storage and display for multi-scale symbols. The particle system and animation technology are utilized in dynamic display of 3D symbols. A multi-scale and dynamic 3D symbol library system prototype is constructed and applied in many 3D visualization systems. The results show that the 3D symbol library based on multi-scale and dynamic technology presents high performance.

EIS study on corrosion evolution of chemical quenched rebar in concrete contaminated with chloride

“…In previous studies, a new chemical reagent named FM was used as the quenching medium during cooling of the hot rolled rebar instead of water. A layer of compact scale formed on the surface of the rebar when using FM cooling, which provides better protective performance against atmospheric corrosion than the water or air cooled rebar 1 1,2…”