haar-fft

umat公式详细介绍，我也不知道够20字了mei(the introduction of umat in abaqus)

用基于拉格朗日函数Hesse矩阵的SQP方法求解约束优化问题(Based on Lagrangian with SQP Hesse matrix method for solving constrained optimization problems)

详细画出了时域和频域的相关图，实现了图像的灰度化并进一步用于视频监视控，小波包分析提取振动信号中的特征频率。( Correlation diagram shown in detail the time domain and frequency domain, Achieve a grayscale image and further control for video surveillance, Wavelet packet analysis to extract vibration signal characteristic frequency.)

螺旋桨唱音信号建模，FFT变换后有明显的谐波(The propeller singing sound signal is modeled, and FFT transformation has obvious harmonic )

说明：  算法设计第三版，算法设计第三版，算法设计第三版，算法设计第三版(Algorithm Design Third Edition)

这里包含了有限元法的一本书籍，和有限元法的C++代码。希望对各位有所帮助(This contains a finite element method books, and the finite element method of C++ code. I hope to help you)

三次样条插值的C语言算法,但是总是数据溢出(Cubic spline interpolation C language algorithm, but always data overflow)

统计格点数据文件A和文件B中物理量间的相关系数，平均误差，均方根误差，绝对误差。(Statistics grid data file A and file B, the correlation between physical quantities, the average error, root mean square error, absolute error.)

homagrapy matrix to find the homagrapy matrix from two pictures, first you need to get a set of coorlation vector

经典99行拓扑优化程序，采用Heaviside方程获得接近0-1离散解(The classical 99-line topology optimization program uses Heaviside equation to obtain nearly 0-1 discrete solution)