ABS TRACT: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.

The responses to a public crisis has become a concern. Some problems exist in the deficient model of having the government as the single entity followed in China in response to the public crisis. The author will have a study on this issue based on the manegement of the congelation public crisis in Xiuwen County. In dealing with the severe congelation public crisis in Xiuwen County, the theory of network governance and collaborative governance have been introduced, thus the county established a perfect Emergency Management System of Public Crisis involving active multiple subjects which are able to cope with the crisis in effective inter-subject and intra-subjects coordination, and accumulated some experience from the division of labor within the subject and cooperation between the subjects. That is of great significance for promoting scientific development of China's public security crisis response mechnism.