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社团划分，是复杂网5络中的一个重要课题。如何划分，又不同的标准。(Divided societies, is a complex network 5 network in an important topic. How to divide, but also different standards.)

LTE 4G 王映民的权威著作 详细介绍了4G中的各种技术(LTE 4G Wang Yingmin authoritative book details the various technologies in 4G)

源程序51与PC通信原理及实现.rar(source 51 and PC Communication Theory and Implementation. Rar)

说明：  该算法为专家PID控制原代码 用MATlab开发，能够管直接运行(The expert PID control algorithm for the original code using Matlab development, to pipe directly to run)

matlab code for estimation in channel

the geometry of a diffraction grating, a common illustration in textbooks of optics, spectroscopy, and analytical chemistry. Sliders on the figures allow real-time interactive control of the incidence angle, grating ruling density (lines/mm), wavelength, and diffraction order.(the geometry of a diffraction grating, a commonillustration in textbooks of optics, spectroscopy, and analytical chemistry.Sliders on the figures allow real-time interactive control of the incidence angle, grating ruling density (lines/mm), wavelength, and diffraction order.)

基于神经网络的matlab模型，解决ＳＩＲ模型问题。(Matlab code for SIR model, based on BP)

其中包含了一些不同条件下的粒子群算法，希望对大家有所帮助。(Which contains a number of particle swarm algorithm under different conditions, we want to help.)

随即共振的simulink仿真，可以实现共振，可以调节参数。(simulink)

基于matlab/simulink的二阶弹簧—阻尼系统的PID控制器设计及参数整定 超调<20 调节时间<2s(Design of Tuning PID Controller Based on matlab/simulink for deductive spring-damper system)