visicity-model

本程序求相关性K值大小，采用傅里叶矩阵和haar矩阵内积。(The procedures for seeking the size of the K value of the correlation, the use of the Fourier matrix and haar matrix of inner product.)

四分之一圆柱贴体网格的生成，可以调节大小(Fourth cylindrical body-fitted grid generation, you can adjust the size of the)

一个简单的计算块的运动矢量源码，使用四步搜索算法(A simple calculation of the block motion vector source, use the four-step search algorithm)

UMAT复合材料渐进损伤实现的具体文献，适合初学者阅读(UMAT for composites-paper)

Matlab求解微分方程组，几种经典算法(MATLAB Solves Differential Equations, Several Classical Algorithms)

说明：  非线性振动教程，学习振动的学者们必须看的东西。(Nonlinear vibration tutorial, learning vibration scholars must look at things.)

基于Levenberg-Marquardt的曲线/面拟合(C library for Levenberg-Marquardt least-squares minimization and curve fitting)

共轭梯度法，本算法是经过验证了的共轭梯度法，读者在运用到其他方面时需要修改一定的参数(Conjugate gradient method, this algorithm is verified of the conjugate gradient method, readers in the use of other aspects need to modify certain parameters)

计算在不同湿度下，不同频率下，大气的衰减系数。(Calculation under different humidity, different frequencies, atmospheric attenuation coefficient.)

大名鼎鼎的J.A.Stratton版电磁理论（中文版），书中有关电磁理论方面的内容是很有指导性的，属于经典书籍。(Famous J.A.Stratton version of electromagnetic theory (Chinese version), the book content of the electromagnetic theory is very instructive, are classic books.)