Research on assimilation simulation of chlorophyll a concentrations in a virtual geographic environment

2021 ◽  
Author(s):  
Fei Guo ◽  
Jing Yang ◽  
Jingjia Zhang ◽  
Zhuo Zhang ◽  
Xin Xu ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Virtual Geographic Environment ◽  
Geographic Environment

Preliminary Study on Voxel-Based Virtual Geographic Environment Representation

2013 ◽  
Vol 307 ◽  
pp. 464-469
Author(s):  
Bing Chuan Jiang ◽  
Xiong You ◽  
Qing Xia ◽  
Wei Zhang
Keyword(s):  
Process Analysis ◽  
Three Dimensional ◽  
Spatial Process ◽  
Surface Model ◽  
Terrain Modeling ◽  
Virtual Geographic Environment ◽  
Natural Phenomena Simulation ◽  
Geographic Environment ◽  
Environment Representation ◽  
Geographic Process

The expression of virtual geographic environment is based on the surface modeling, such as three-dimensional terrain modeling and rendering most of which are based on the polygon grid and 2D textured. In the expression of extreme terrain, such as caves, cliffs, canyons it seems powerless. However, the voxel-based terrain modeling has been more useful than polygon modeling expression in the field of real-time terrain deformation, extreme terrain simulation and geographic process expression. Furthermore, virtual geographic environment based on the traditional surface model is difficult to realistically simulate the real world which is volumetric. This paper analyzes the trends of the geographical environment representation, and discusses the typical voxel-based applications in natural phenomena simulation, terrain modeling and spatial process analysis. It provides the references for the integrative representation of the unified voxel and surface model, and for the construction of virtual geographic environment unified platform.

Integration of a computational grid and virtual geographic environment to facilitate air pollution simulation

2013 ◽  
Vol 54 ◽  
pp. 184-195 ◽  
Author(s):  
Bingli Xu ◽  
Hui Lin ◽  
Jianhua Gong ◽  
Sammy Tang ◽  
Ya Hu ◽  
...  
Keyword(s):  
Air Pollution ◽  
Computational Grid ◽  
Virtual Geographic Environment ◽  
Geographic Environment

scholarly journals MODELLING TECHNOLOGY FOR BUILDING FIRE SCENE WITH VIRTUAL GEOGRAPHIC ENVIRONMENT

2017 ◽  
Vol XLII-2/W7 ◽  
pp. 391-396
Author(s):  
Y. Song ◽  
L. Zhao ◽  
M. Wei ◽  
H. Zhang ◽  
W. Liu
Keyword(s):  
Safety Management ◽  
Good Choice ◽  
Space Environment ◽  
Fire Event ◽  
Building Fire ◽  
Fire Extinguishing ◽  
Virtual Geographic Environment ◽  
Core Elements ◽  
Geographic Environment ◽  
Fire Scene

Building fire is a risky activity that can lead to disaster and massive destruction. The management and disposal of building fire has always attracted much interest from researchers. Integrated Virtual Geographic Environment (VGE) is a good choice for building fire safety management and emergency decisions, in which a more real and rich fire process can be computed and obtained dynamically, and the results of fire simulations and analyses can be much more accurate as well. To modelling building fire scene with VGE, the application requirements and modelling objective of building fire scene were analysed in this paper. Then, the four core elements of modelling building fire scene (the building space environment, the fire event, the indoor Fire Extinguishing System (FES) and the indoor crowd) were implemented, and the relationship between the elements was discussed also. Finally, with the theory and framework of VGE, the technology of building fire scene system with VGE was designed within the data environment, the model environment, the expression environment, and the collaborative environment as well. The functions and key techniques in each environment are also analysed, which may provide a reference for further development and other research on VGE.

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