mseries

用于地球物理专业学习地磁学，了解磁场各要素！(This program used for geophysical professional studies and help you to understand the geomagnetic elements.)

说明：  低循环疲劳试验数据的异方差回归处理。可以获得材料的疲劳参数(Low cycle fatigue test data, heteroscedastic regression treatment. Material fatigue parameters can be obtained)

当信噪比低，小信号输入时噪音严重，在整个音域的声音明显变得浑浊不清，不知发的是什么音，严重影响音质。信噪比的大小是用有用信号功率（或电压）和噪声功率（或电压）比值的对数来表示的。(When the signal to noise ratio is low, serious small signal input noise, the sound of the entire range becomes significantly turbid, I do not know what made the sound, seriously affecting the sound quality. Size is the number of the signal to noise ratio by the ratio of desired signal power (or voltage) and the noise power (or voltage) represented.)

利用KNN最近邻算法，对心音信号进行分割并判断，给出第一心音、第二心音和收缩期、舒张期。(Use KNN nearest neighbor algorithm, the heart sound signal is divided and judgment is given first, second heart sound and systolic, diastolic.)

matlab遗传算法程序，包括大量源代码。(Matlab GA procedures, including a large number of source code.)

Here the syms toolbox is used and if you try to print any other values than lambda then MATLAB will print the value in fractions and that is unavoidable. So if you need to know the value in decimal, then use the command vpa() on command window

说明：  logistic回归分析学习的SAS实验资料2(Learning SAS logistic regression analysis of experimental data 2)

Code Matlab Interpolation, Spline and Lagrange forming a fugure a duck flying in a graph.

heat4 implecit heat4 implecit

简单的matlab图象修正算法 采用的是sobel函数(Simple matlab edge extraction algorithm using sobel function)