refraction_column_outer

主成分分析方法在各个变量之间相关关系研究的基础上，用较少的新变量代替原来较多的变量，而且使这些较少的新变量尽可能多地保留原来较多的变量所反映的信息一种方法。(Principal Component Analysis in the relationship between the various variables on the basis of the study, with fewer new variables replace the original more variable, but made them less a new variable as much as possible to retain the original variables that reflect more information methods)

刘金琨老师 《先进PID与Matlab仿真》（第二版） 数字PID仿真程序(Liu Jinkun ‘Advanced PID with the Matlab simulation[second edition]’ digital PID simulation program)

多个 matlab 神经网络bp算法 调制识别(Matlab neural network algorithm for multiple modulation recognition bp)

平稳性检测，关于matlab的平稳性检测源代码，时间序列多个代码(Stability testing, stability testing on matlab source code, time series, more than one code)

emd code for calculate emprical mode dicompistion

MATLAB based audio processing Project to process the given input audio and voice signals.

esp8266 iot源码包含at指令和smartconfig demo(esp8266 iot_demo)

本书重点介绍了在MATLAB环境下应用Maple强大的计算功能解决数值科学计算问题(the book highlights of the MATLAB environment Maple powerful computing capabilities to solve numerical problems in scientific computing)

卡尔曼滤波与组合导航原理，非常适合初学者了解原理(Kalman filtering and navigation principles, the principle is very suitable for beginners to understand)

this file is usefull for all student