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说明：  1.1 背包问题 有一个徒步旅行者，已知他能承受的旅行背包的重量不超过a（kg）。设有n种物品可供他选择装入背包，这n种物品分别编号为1，2，…，n。其中第i种物品每件的重量为ai（kg），其使用价值（指一件第i种物品对旅行者来说所带来的好处的一种数量指标）为ci（i＝1，2，…，n）。问这位旅行者应如何选择携带这n种物品的件数，使得总价值最大？ (1.1 knapsack problem is a hikers. he is known to travel to withstand the weight of the backpack not exceed a (kg). N Species with articles for his choice loaded backpack, n product were numbered 1, 2, ..., n. I first of which product each ai of the weight (kg), its value (i refers to a section of the types of items travelers the benefits brought by a number of indicators) for the ci (i = 1, 2, ..., n). Asked how travelers who choose to bring this product to the n pieces, making the total value of the largest?)

各种matlab时钟程序，可以修改时钟的各种参数(Matlab program of the clock, you can modify various parameters of the clock)

一个师兄的毕设，采用波束成形技术的BER计算，相控阵天线的方向图（切比雪夫加权）。( A complete set of brothers, By applying the beam forming technology of BER Phased array antenna pattern (Chebyshev weights).)

说明：  MATLAB编写的ode45求解转子系统动力学程序，可用于计算响应和临界转速，程序正常可运行，主程序和函数放在同一个txt文件中。(Ode45 program written in MATLAB for solving rotor system dynamics can be used to calculate response and critical speed. The program can run normally. The main program and function are in the same TXT file.)

说明：  精通Matlab综合辅导与指南 用于数学建模的教科书(proficient Matlab comprehensive counseling and guidance for the mathematical modeling of textbooks)

基于matlab的suspension system 优化(adams suspension system optimization)

Traditional optical flow technique that developed by Lucas and Kanade was improved with the optimized variable setting. It is quite simple and also helpful.

说明：  matab遗传算法工具箱以及极限学习机+遗传算法优化压缩包(Genetic Algorithm toolbox for matlab 2020b and Limit learning machine + genetic algorithm optimization package)

it is a Gaussian Mixture Model(MATLAB version) for training and testing with some list or file. and it has references in enclosed rar file

说明：  用于估计未知数据的EM算法，即最大期望算法，用到的地方很多，可用来做同步。(The data used to estimate the unknown EM algorithm, that is the maximum expectation algorithm, used in many places, can be used for synchronization.)