IJarea-postproc

利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。(Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoidal signals, can be achieved by x (n) be the Fourier transform to get spectrum to identify the magnitude of the frequency value corresponding to the maximum , several transformations, find the mean square error. Change the signal to noise ratio SNR, the simulation can be drawn as the SNR increases, the mean square error decreases.)

说明：  ABAQUS 的二次开发,详细注释说明，自学ABAQUS的二次开发(ABAQUS secondary development, detailed notes, self-study ABAQUS secondary development)

利用楚列斯基分解法和平方根法分解对称矩阵，较为实用(use the Cholesky method and esquare-root method to solve the problem of Triangle decomposition of matrix)

说明：  点云通过不同的多项式来进行曲线拟合，可以手动设置多项式的次数。(Point clouds are fitted by different polynomials,The degree of the polynomial can be set manually.)

用于生成空气动力学力学计算中的计算O型网格(generate the calculational grid)

自己编的5种调制信号，混沌的判断指标Lyapunov指数计算,信号维数的估计。( Own five modulation signal, Chaos indicator for Lyapunov index calculation, Signal dimension estimates.)

说明：  下三角复矩阵求逆的ASIC设计及实现 论文 pdf(Lower triangular complex matrix inverse of the ASIC Design and Implementation of)

Douglas-Peucker algorithm for a 2-dimensional data with example in matlab.

由美国圣母大学Jena教授及其学生编写的关于计算半导体迁移率的matla脚本文件。(Jena professor from the University of Notre Dame and his students prepare for the calculation of a series of semiconductor mobility matlab script file.)

Routing Protocol for Wireless Sensor Networks