二阶循环，去同频，不去相干

代数多重程序中的 W 循环只适合 4 层 网格的 W 循环( U4EE3 u6570 u591A u91CD u7F51 u683CW u578B)

同伦算法解非线性方程组，构造不动点问题,并从不同的初始点出发运行程序。(To solve nonlinear equations with homotopy algorithm，constructing a fixed foint progrem.and from the different starting point to run the program. )

这个程序用来计算四阶累计量，程序中有详细说明(This procedure used to calculate the fourth-order cumulant, the program in detail)

说明：  通过建立车辆运动学模型，使用MPC算法模拟仿真导引车辆达到指定点(Through the establishment of vehicle kinematics model, the MPC algorithm is used to simulate and guide the vehicle to the designated point.)

已知日期，计算出星期几的程序.以过测试。计算正确。请放心使用。(Caculate Weekday)

ABAQUS的二次开发，道路厚度与温度对路基的影响，来自廖公云老师的《ABAQUS有限元软件在道路工程中的应用》(ABAQUS secondary development, the road thickness and temperature of the roadbed, from Liao Gongyun teacher "ABAQUS finite element software in road works)

计算fft，输出频谱，相位，模值,Calculation of FFT, the output frequency, phase, amplitude,

Group delay calculation

关于汉诺塔的代码,中间是用迭代的方法实现的(About Hanio Tower)

说明：  fftw 快速傅里叶变换， C#算法 直接调用dll(fftw fuliye bianhuan C# suanfa zhijie dianyong dll wenjian zhijie daoru fangzai bin wenjian jia zhong)