A typical artificial neural network model-back-propagation model was presented for prediction on the soil liquefaction type based on the physical parameters of soils under earthquake.
本文根据人工神经网络的一典型模型—反向传播模型，以及地震荷载下的各项土的物理—力学参数，建立了土液化类型的神经网络数学模型。
It is feasible to predict soil infiltration capacities by routine physical parameters with stepwise regression models with multiple units.
采用多元逐步回归模型用常规土壤物理参数对土壤水分入渗模型参数进行预报是可行的。
A fitted relationship between the parameters and the soil texture was established, with which the model parameters of soil water retention curves can be predicted by the soil physical characteristic.
采用回归分析方法建立了参数与土壤物理特性间的函数关系，为采用土壤颗粒组成等土壤物理特性确定土壤水分特征曲线提供了指导。
Theoretical analysis method of various projects must be based on reasonable soil physical property parameters.
各种实际工程的理论分析方法，都必须以合理的土体物性参数为基础。
The desired input parameters were soil physical constants, crop 's developmental date, initial soil water content and daily air temperature, relative humidity and precipitation.
模式所需的输入为初始土壤含水量、土壤物理常数、作物播种期、逐日平均气温、相对湿度和降水量。
This paper reviews the applications of fractals in research of physical properties of soil:(1)fractals have been used to describe physical parameters of soil such as density and specific surface area;
本文从两个方面介绍了土体物理性质的分形研究：（1）分形用于定量描述土体的的密度，孔隙表面积等物理参数；
A new approach is introduced for obtaining the dynamic flexibility of soil layer with variable physical parameters.
介绍一个求解变参数层状地基动力柔度系数的近似求解方法。
A new approach is introduced for obtaining the dynamic flexibility of soil layer with variable physical parameters.
介绍一个求解变参数层状地基动力柔度系数的近似求解方法。
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