特征函数

In this paper,we use geostatistics to analyse special variability of soil salinity in Yanqi Basin of Xinjiang base on soil salinity data,and then we predict and draw the soil-salinity-class maps including unsampled region,it shows: the soil salinity data's Cv are not less than 100% and have very strong special variability;the spherical model f...

在焉耆盆地大规模的土壤取样、试验分析盐分数据的基础上，采用地统计学的方法对研究区的土壤盐分进行了空间特征变异分析，并采用普通克里格插值法制作出焉耆盆地的土壤盐分空间数字地图，结果表明：研究区各层土壤盐分变异系数均大于100%，具有强空间变异性；对土壤盐分进行半方差函数计算分析，发现拟合的理论模型均为球状模型，各层土壤盐分表现出强烈的空间相关性；土壤盐渍化程度在水平方向的分布与地形地势的关系密切，在垂直方向则表现出强烈的表聚特性。

As there were too much description between mathematic model and practice, many useful information was lost duding regression, the regression could not give satisfied results in color style research.

用多元回归的方法处理颜色风格的问题时，由于假设条件与实际情况的差异较大，加上在处理过程中不能充分利用所有的信息，因此颜色风格的预报函数不能准确地给出颜色风格特征。

Firstly-the values of voltage on various test points under normal.states and fault states are measured;and the deviation of voltage is fuzzed for deriving the membership degree of the deviation under different fault states.Then.with the membership degree of each test points and their relevant fault categories 88 the sample for training neural network to establish non.linear function from fault feature to fault categories.

首先测得模拟电路在故障状态和正常状态时各测试节点的电压值，并对其电压偏差值模糊化，从而求得不同故障状态下各测试节点的电压偏差值所对应的隶属度；其次，以各测试节点的隶属度和所对应的故障类型作为训练神经网络的样本，来建立从故障特征到故障类型的非线性函数；最后。

The characteristic temperature was corresponding to the maximum value of gelling activity energy.

对实验数据的分析表明，特征温度与原油经历剪切过程的粘性流动熵产呈幂函数关系，并据此拟合出相应的经验式。

In particular, theoretical variogram model is essential in geostatistics, which is the key issue in investigating the variability of regionalized variable and further geostatistics computing.

理论变异函数模型的获取是地质统计学中的基础性工作，它是了解区域化变量的变异特征、进一步对地质统计学计算的必要环节。

The average fractal dimensions for 10 types of textures were calculated with silt and clay content being regressed.

土壤的水分特征曲线是指土壤体积水分含量与压力水头之间的函数关系。

Aiming at these characters of original data, this paper upbuilds a kind of noise departure model via wavelet packet and soft threshold syncretizing, meanwhile, the relevant scaled functions are controlled by the required accuracy value so that we can obtain the needed accuracy and noise.

文中针对原始数据的特征，建立对其小波包分解后的各高频门限权值融合，并利用要求的数据精度值控制权函数的噪声分离模型，得到σ控制的数据和各种噪声的分离。

It is often seen in fields of telecommunication, Radar, Sonar and telemetering because of scanning, modulation or sampling.

对于通信、雷达、遥测和声纳等系统中的信号，它们大多具有循环平稳特性，即数字特征是时间的周期函数。

Through the Laplace and Z transformations, it represents the varying features of electromechanical disturbance in a uniform chain network using the family of Bessel functions; the growing or attenuating laws are the same as that of electromechanical wave in a continuum model along the corresponding transmission media. Furthermore, the time of electromechanical disturbance arriving at any bus in the discrete model is also the same as that of electromechanical wave arriving at the corresponding bus in the continuum model.

通过Laplace和Z联合变换，用Bessel函数表示出机电扰动在均匀离散系统中的变化特征，得出扰动的增衰规律与连续体模型中机电波的增衰规律完全相同，而且离散系统中扰动传播到每一条母线所需要的时间与连续体模型中机电波传播到相应母线所需时间也完全相等。

Based on the analysis of typical math function characteristic, bring forward the region correction method such as surface correction and line correction.

在分析典型数学函数特性的基础上，提出了针对水域、丘陵、黄土等不同地貌特征的DEM线编辑和面编辑算法，并取得了较好的实验结果。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。