光亮度比

2nd one, this is the next file for code

implementation of faster algorithm for computing max flow of multi-commodity flow network.

本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。将经过二维混沌映射置乱后的数字水印信号嵌入图像小波域的低频系数，实现了数字水印的隐蔽性、保密性和稳固性；利用二维混沌映射Arnold变换对水印信号进行置乱，不仅增强了水印信号保密性，同时有效提高了视觉上抵抗图像剪切攻击的能力(failed to translate)

说明：  bpsk仿真中间有两个方面的内容，很好的仿真软件(There are two files in the zip folder. bpsk_spread.m and jakesmodel.m Steps for simulation: 1] Run jakesmodel.m first 2] Then run bpsk_spread.m . 3] Note that during the first run bpsk_spread.m has no rayleigh fading.This is because the corresponding code has been commented 4] The resulting performance is stored in BER_awgn. 5] Now uncomment the Rayleigh Fading code in bpsk_spread.m file. 6] Same time comment BER_awgn (line 112) and uncomment BER_ray variable. 7] Run the simulation. )

雷达截面积————————平截体后向散射RCS(Truncated body backscatter RCS )

读取以.dat的数据文件；读取以MIT-BIH数据库的212格式文件(Read the MIT-BIH database 212 format data)

stationary test 檢驗數據是否為穩定 藉此判定ARIMA程序中的d值(stationary test)

通信原理实验的matlab仿真中的快衰落和慢衰落(Matlab simulation experiment of communication principle in fast fading and slow fading)

说明：  cholesky分解，求解一般的线性方程组很方便。(Cholesky decomposition, for solving general linear equations easily.)

图像低级处理,非常有用，主要用于matlab的低级图像处理。(low-level image processing program)