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无约束优化问题，对新手有一定的帮助作用，希望大家共同交流(Unconstrained optimization problem, certainly helps the novice role, I hope you and share their)

说明：  提出了一种新的基于离散小波变换(DWT)与奇异值分解(SVD)相结合的数字图像水印算法。该算法将原始图像作小波分解并将小波分解得到的低频子带进行分块，对每一块进行奇异值分解后，选取每块中最大的奇异值通过量化的方法嵌入经过Arnold置乱后水印信息。(A new wavelet transform based on discrete (DWT) and Singular Value Decomposition (SVD) combination of digital image watermarking algorithm. The algorithm for wavelet decomposition of the original image and wavelet decomposition low-frequency sub-band are divided into blocks, each a singular value decomposition, the selection of each block by the largest singular value methods to quantify Arnold scrambled after embedding the watermark .)

说明：  很好的资料，对于两个相位不同的信号来说，信号的分离(Good information, for two different signal phase, the signal separation)

this is a code in matlab for character recognition depending on correlation

Using the Serial Port with a MATLAB GUI

说明：  matlab进行PID控制的仿真源程序 包括simulink仿真(matlab source code for simulation of PID control, including simulink simulation)

Bacterial Colony Chemotaxis. This algorithm is a simple example of bcc algorithm used to search the maximum point of a function.

最速下降法与牛顿法-Steepest descent method and Newton s method(Steepest descent method and Newton' s method)

generation of dsb signal,,simulink

step response in RC filter