fem

使用MATLAB自带的函数，实现了50Hz带阻滤波器，其中的参数可以修改，即可以实现任意频率的陷波器。(Achieved a 50Hz notch filter)

说明：  用优化算法求解运输问题。 1.不使用linprog，比较歧异解 2.用西北角法求初始基本可行解，用闭回路法确定退出基和更新运输矩阵 3.不能处理非平衡的运输问题(Optimization algorithm used to solve transport problems. 1. Do not use linprog, compare differences solution 2. With the northwest corner of France seeking an initial basic feasible solution, using closed-loop method to determine the transport out of the base and update the matrix 3. Can not handle the transport of non-equilibrium)

说明：  用于介绍Simulink的使用，模块封装，模块搭建等技巧的电子书(Used to introduce the use of Simulink, module packaging, module structures, such as e-skills)

Program to read data from a Ball&Hoop system and plot a graph.

关于matlab和c++相结合编程的电子书籍，英文版的学习资料(On matlab and c++ Combining programming e-books, English learning materials)

一个50行的Matlab有限元程序（二维传热问题），执行fem2d.m即可。(A 50-line Matlab finite element program (two-dimensional heat transfer problem), the Executive fem2d.m can.)

用FFT对信号作频谱分析.通过本次试验学会了用FFT对连续信号和时域离散信号进行谱分析的方法，并了解了可能出现的分析误差及其原因。(Using FFT for spectral analysis of signals)

hide message inside image and retrive it from image using dct

说明：  辨识参数，进行迭代计算，可以辨识各种经典模型的是参数，经典最小二乘法a(Parameter identification, iterative calculation, can identify all kinds of classical models is the parameter, classical least square method a)

四元数双曲空间的一些计算函数，主要包括求四元数的逆，相乘运算等(Some function for the quaternionic hyperbolic space, including the inverse and the product ect.)