2psk

单模多项式矩阵的分解算法，支持符号运算，用matlab实现了smith算法(Polynomial matrix of single-mode decomposition algorithm, to support the symbolic operation, using matlab algorithm achieved smith)

说明：  地震数据时频分析与分频处理，需要的带走吧，很不错的(Time-frequency analysis and seismic data processing division, need take it away, it is good)

这是个matlab M文件，利用其可拟合不同波长下的折射率(This is a matlab M documents, which can be fitted using a refractive index different wavelengths)

pid 参数整定代码，使用简单，适合初学者学习使用(The pid parameter tuning code, simple to use, suitable for beginners to learn how to use)

Code maade decision for n files in which format is better save image into folder

详细的介绍了maple和matlab科学计算的问题也原理(Detailed description of the maple and matlab scientific computing problem principle)

power_svpwm.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_svpwm.rar, Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

rinex file observasion

说明：  传染病模型是指传染病的基本数学模型，研究传染病的传播速度、空间范围、传播途径、动力学机理等问题，以指导对传染病的有效的预防和控制。常见的传染病模型按照传染病类型分为SI、SIR、SIRS、SEIR模型等。由于2019年末出现的新冠肺炎有一定的潜伏期，与病人接触过的健康人并不马上患病，而是称为病原体的携带者，归为E类。(infectious disease model simulation)

读取图片，提取图片的颜色矩特征，其中变量I=imread( 1.jpg )，1.jpg即为需要读取的图片。(Read the image, color moments extracted image features, including variable I = imread (' 1. Jpg ' ), 1.jpg shall be required to read the pictures.)