This paper introduces a calibrated scenario generation method to estimate extreme Value-at-Risk (VaR) and Value-at-Risk confidence interval (VaR CI) of a portfolio with single risk factor which has heavy tailed distribution.

The result shows that the risky area is closely related with not only the source term,but also the meteorological conditions and the time after the accident;the high concentration zone spread near the leaking point under the unstable and strong winding meteorological conditions,while,the high concentration zone not only lasts for a long time,but also has the transportation function under the.

It is very complex engineering system for the emergent assistance at the leaking accident of the toxic and harmful gas,and the key to the settlement of the question lies the right determination of the potential risky area.

The systematic analysis and its forewarn mechanism of project regional risk;

A Study on the Response Policy Choice for the Project s Regional Risk Based on the Resource Restriction;

Based on the theory of quantitative risk assessment, a regional risk assessment (RRA) method was put forward.

The basic units of natural disaster risk regionalization also can be produced by overlaying two maps produced.

The risk regionalization of agrometeorological calamities was accompl.

In order to forecast and early warning the geological disaster in western region, the paper argues the necessity and importance for researching the risk regionalization of geological disaster, where the disasters often happen due to the complex geology and terrain.

Project application and research in risk zonation of landslide based on analytic network process model

This paper discusses the principales of debris flow risk zonation,i.

This paper explores the methodology for compiling the torrent hazard and risk zonation map by means of GIS technique for the Red River basin in Yunnan province of China, where is vulnerable to torrent floods.