提出一种新的基于物理的多相流模型来模拟洪水、泥石流、山体滑坡等一系列自然灾害景象。
This paper describes a new physically based multi-phase flow model to simulate natural catastrophic phenomena, such as flood, debris flow and landslide.
介绍了建立自然灾害保险风险分析的数学模型的方法；
The method of establishing the mathematics model to do the insurance risk analysis for the natural disaster is introduced.
这一研究表明，内集-外集模型用于自然灾害模糊风险评估，在期望值的意义上是一个可靠的模型。
This study demonstrates that, in the meaning of the expected value, the interior outer set model is reliable for calculating the fuzzy risk of the natural disaster.
运用系统理论观点，从数学层面上分析自然灾害系统的链式关系结构，建立自然灾害链式效应数学关系模型。
Using systems theory, the structural relation of chain effects on natural disaster is mathematically analyzed; and a mathematical model is deduced.
运用系统理论观点，从数学层面上分析自然灾害系统的链式关系结构，建立自然灾害链式效应数学关系模型。
Using systems theory, the structural relation of chain effects on natural disaster is mathematically analyzed; and a mathematical model is deduced.
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