mvcoprnd

计算离散傅里叶变换的一种快速算法，简称FFT。快速傅里叶变换是1965年由J.W.库利和T.W.图基提出的。采用这种算法能使计算机计算离散傅里叶变换所需要的乘法次数大为减少，特别是被变换的抽样点数N越多，FFT算法计算量的节省就越显著。(A computing discrete Fourier transform fast algorithm, referred to as FFT. Fast Fourier Transform in 1965 by the JW Cooley and TW Tuji Ti out. Using this algorithm enables a computer to calculate the number of multiplications needed for the discrete Fourier transform greatly reduced, especially sampling points N is transformed more and save FFT algorithm to calculate the amount of the more remarkable.)

基于Laguerre多项式的拟合程序，可以控制多项式的结束，以及变量alpha。(Based on Laguerre polynomial fitting procedure, you can control the end of polynomials, and variable alpha.)

说明：  该算法用于matlab，主要用于马尔可夫算法(THIS IS For markov algorithms)

说明：  levenberg-maquardt最小二乘拟合算法(This program do the levenberg-maquardt LS fit.)

计算流体力学软件FLUENT计算空气龄的udf文件(FLUENT CFD software udf file to calculate the air age )

此函数通过两点的大地经纬度（Ja,Wa）和（Jb,Wb）计算两点间距离 Dis (this function through the 2:00 and Geodesy (Ja, Wa) and ( `, mg) calculated the distance between two points Dis)

此程序为香农编码的程序实现的过程及相关参数和结果。(shannon)

此代码属于地球物理领域，是用有限差分开发的直流电法三维正演，基于FORTRAN平台，此代码具有很高的运算效率，对于从事地球物理领域的人来说是不可多得的(This code belongs to the field of geophysics, is developed using finite difference method of three-dimensional forward modeling of DC, FORTRAN-based platform, this code has high computing efficiency, people engaged in geophysical field is rare)

【ansys基本建模算例】带法兰油缸的有限元分析，计算相关应力即变形([Examples] basic modeling ansys finite element analysis with flanged cylinder, calculating the stress that is associated deformation)

说明：  复合材料层内基于断裂韧性退化的VUMAT子程序(VUMAT subroutine based on fracture toughness degradation in composite laminates)