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最优化方法的有效集算法的matlab程序，附带拉格朗日函数的程序.(active set program and lagrange function for solving Quadratic Programming promblems.)

This code is NUMBER1: MATLAB code for paper: calculation of electron energies in a quantum well using the transfer matrix method. we solve the time independent schrodinger equation in 1D AlGaAs/GaAs/AlGaAs quantum well using the transfer matrix method. We define a wave function for each point of well and barriers and convert it to a 2in2 matrix. Multiplying of matrixes with boundary conditions results in discrete energies and their wave functions. We compare our results with other simulations and calculate discrete energies for different wells.

说明：  BP神经网络识别手写体数字，BP(back propagation)神经网络是1986年由Rumelhart和McClelland为首的科学家提出的概念，是一种按照误差逆向传播算法训练的多层前馈神经网络，是应用最广泛的神经网络。(Recognition of handwritten digits by BP neural network)

SAR 成像算法 matlab程序源代码，包含子程序，有仿真结果，(SAR imaging algorithm matlab source code, including subroutines, there are simulation results,)

标准差分进化算法的MATLAB实现，有一个简单的函数，可以直接运行(MATLAB standard differential evolution algorithm to achieve, there is a simple function, can be run directly)

说明：  模拟退火算法 自己写的一点小程序 提供一点参考(Simulated annealing algorithm to write their own applets provide a reference point)

一种fourier的快速变换，计算结果比matlab里的fft节省一半空间(A Fourier transform of fast, the calculation results of FFT than matlab save half space)

一些复杂网络的数据集，包括karate，dolphins，football等，分别为n*2和n*n矩阵形式，还有对数据集进行转换的代码(datasets of complex networks)

说明：  这是一本关于迅速查找MATLAB函数目录的书籍，值得拥有。(This is a MATLAB function to quickly find the directory on the books, worth having.)

说明：  给图片添加了正弦噪声，利用MATLAB源代码消除噪声。(Sine was added to the image noise, using MATLAB source code to eliminate noise.)