chepai

用NRTL模型，求解萘在一种离子液体中的活度系数。 求解非线性方程、非线性拟合都可以实现。 稍微对比了一下，发现还是拟合的结果好些。 Matlab源程序及结果在附件里(with NRTL model for naphthalene in an ionic liquid in the activity coefficient. Solve nonlinear equations, nonlinear fitting can be achieved. Contrast slightly for a moment and found that the fitting or better results. Matlab source and the results of the annex)

基于 matlab 用主元分析对半导体数据进行处理，进行相似度的匹配(Matlab using principal component analysis based on semiconductor data processing, the similarity matching)

car number plate recognition system in matlab

小波包频带能量分解在断路器机械状态监测中的应用(xiaobobao energy fenjie zhaungtaijiance)

hessian point detector 是SURF算法中所采用的基于Hessian矩阵进行的特征点检测方法，检测得到椭圆区域。(feature detector)

Pegasis wsn routing u can download IT

说明：  最近看到有人提问怎样用FFT实现频谱分析，我认为能够进行到频谱分析的人，对于系统研究的深度基本上已经相当不错了。本人今天做了一个例程，发给大家参考一下。 历程主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。(The question was asked recently to see the realization of how to use FFT spectral analysis, I think that spectral analysis can be carried out to those who study the depth of the system basically is already quite good. Today I made a routine, distributed to Members for reference. The main contents of the course (signal_analyzer.rar) are as follows: test1.txt the first time as t, 0.001s for the step the second as the system input signal the third as a system output signal. signal_analyzer.m first test1.txt data read into workspace, and then proceed to FFT, analysis of the two signal frequency, output amplitude for input attenuation (db), the output of the input phase difference.)

利用FDTD算法，计算fopen环境下的雷达散射截面积。(Use FDTD algorithm to calculate fopen environment RCS.)

说明：  智能微电网粒子群优化算法,微源：光伏、风机、发电机、储能等((Smart Microgrid GA, micro sources: photovoltaic, wind turbines, generators, energy storage, etc.))

三相正弦脉宽调制，可以自由设定调制比，脉冲数，可以观察波形(Three-phase sinusoidal pulse width modulation, can freely set the modulation ratio, pulse a few, you can observe the waveform)