并利用随机微分方程和偏微分方程之间的关系，对股票投资风险进行了估计，得到关于风险指标的动态轨线。
By using the relation between the stochastic, differential equations and the PDEs, we estimate the risk of investing stocks, and obtain the dynamic traces 'of risk functions.
利用一种求偏微分方程的新方法蒙特卡罗算法通过不规则网格随机游动来求解大体积混凝土稳定温度场。
In this paper, the problem of mass concrete steady thermal field was solved by using Monte Carlo method with irregular grid random walk.
给出了在固体中随机温度分布的期望和相关性的一个不稳定的偏微分方程模型。
The unsteady partial differential equations for expectation and correlation distributions of the stochastic temperature distribution in a solid are obtained.
通过摄动方法得到一系列关于水头展开式的偏微分方程，用有限差分法进行求解，获得了压力水头的随机描述，并计算其均值和方差。
The equations are solved by finite difference method and the mean and variance of pressure head are determined from its random expression.
通过摄动方法得到一系列关于水头展开式的偏微分方程，用有限差分法进行求解，获得了压力水头的随机描述，并计算其均值和方差。
The equations are solved by finite difference method and the mean and variance of pressure head are determined from its random expression.
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