firstderivative

This something that people never understand , SAMA PERSIS BUAT AMBIL PROGRAM

BPSK的AWGN分析归一化，对初学者会有所帮助(BPSK Analysis of the AWGN normalized, it would be helpful for beginners)

强大的响度计算工具包。可以计算稳态的响度和瞬态的响度。并且可以将响度表示在时域上。(Loudness calculated powerful toolkit. Can calculate the loudness of steady state and transient loudness. Loudness and can be expressed in the time domain.)

说明：  基于matlab,对图片嵌入水印而不被人感知(Based on matlab, embedded watermark on the image and not be perceived)

经典的论文 关于艾滋病诊断问题的 全国数学建模竞赛 (Classic paper on the diagnosis of AIDS National Mathematical Contest in Modeling)

用matalb进行ofdm的仿真，这个程序可以运行，简单明了(matalb used for the ofdm simulation, the process can run simple and clear)

粒子群算法Rastrgrin实现寻优，利用一具体案例得出寻优结果(Particle swarm optimization algorithm Rastrgrin realized using a specific case optimization results obtained)

基础且有用的的matlab技巧及其源代码文件(matlab source file)

comsol 案例，值得拥有，微纳光力案例(Comsol case, worth having)

说明：  此代码是2个自由度的bouc-wen模型代码，如有漏洞，敬请指出(This code is a Bouc-Wen model code with 2 degrees of freedom. If there is a loophole, please point out)