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北京大学2001年数学建模B题MATLAB算法 判断癌症的经典模型算法(Beijing university in 2001, mathematical modeling B topic MATLAB algorithm of classical model algorithm judge cancer )

PPT，关于matlab实现著名的希尔伯特黄变换算法，介绍了HHT算法的基础知识(HHT basic information in matlab)

简述了matlab环境下的数理工具箱函数，供大家参考(Briefly the mathematical toolbox functions in the Matlab environment, for your reference)

说明：  实现求圆形、三角形、矩形的面积和周长。要求和说明如下： (一) 定义接口sharp接口 (二) 通过实现接口定义Rect、Triangle、Circle的类，并且一个构造方法，并实现求面积和周长的方法（其中三角形斜边的计算公式c=Math.sqrt (width * width + height * height ) ） (Seeking to achieve circular, triangular, rectangular area and perimeter. Requirements and are described as follows: (a) define the interface sharp interfaces (two) by implementing the interface definition Rect, Triangle, Circle of class and a constructor method, and implement methods for the area and perimeter (where the hypotenuse of the triangle formula c = Math.sqrt (width* width+ height* height) ))

this program is th simulink of lorenz map

FastICA algorithm for coctail party problem

按照指定噪声系数和指定的FIR滤波器参数，模拟接收机接收信号过程(In accordance with the specified noise figure, the FIR filter parameters and the specified process of the reception signal, analog receiver)

The user material subroutine example

数值解法 例1 用改进的欧拉方法求一阶方程初值问题的 数值解 例2 数学摆的运动方程与近似方程数值解比较 例3 四阶龙格库塔公式求数值解 Matlab实现求数值解 例1 求初值问题y =x*sin(x)-y,y(0)=0的数值 解.先编辑一个定义方程的ODEF函数文件 ODEfun1.m. 例2 求方程组初值问题的数值解,按指定步长 0.05划分节点. 例3 按指定的精度求高阶方程初值问题的数值解.(Numerical Solution of the law a method of using the improved Euler' s equation of order to a first-order initial value problem of the numerical solution of cases of two mathematical pendulum equations of motion compared with the approximate numerical solutions of equations of three cases of fourth-order Runge-Kutta numerical solution of the formula Matlab order to achieve the numerical solution of demand cases seeking an initial value problem y ' = x* sin (x)-y, y (0) = 0 the numerical solution. first, the definition of an equation editor ODEF function file ODEfun1.m. cases of two demand equations initial value problem of numerical solution, according to the specified division of the node step 0.05. Example 3 according to the specified precision of seeking higher-order equation of the numerical solution of initial value problem.)

matlab 信号采样，补0采样并还原信号(matlab signal sampling, sampling up and restore the signal 0)