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The Schumann resonance frequencies are a set of eigenmodes in the extremely low frequency (ELF) portion of the electromagnetic field spectrum. These frequencies are only present for planetary-like bodies with a substantial ionosphere acting as a perfect electric conductor, thus forming a resonance cavity with the surface. In this example, the Schumann resonance frequencies for the Earth are calculated.

说明：  关于语音信号端点检测的有用文献，主要介绍了关于端点检测的有关技术和方法(Endpoint detection of speech signals useful literature are introduced on the endpoint detection of the techniques and methods)

视觉图像处理研究者必看的有用代码。包括图像预处理，特征提取，算法实现，特征整合等等代码。(Visual image processing researchers must-see useful code. Including image preprocessing, feature extraction, algorithm, feature integration, etc. code.)

crank nicolson heat conduction

说明：  一个遗传算法的函数优化，求函数的最小值，matlab编写的程序(A genetic algorithm for function optimization, seeking the minimization, matlab program written)

this code to enhanc grayscale images

在Matlab的Simulink仿真环境，模拟光伏电池板电流输入控制电压输出(In Matlab Simulink simulation environment, the simulation of photovoltaic panels current input control voltage output)

最优控制工具书，大师级人物解学书经典力作，研究最优控制必备(Optimal control books, school books gurus solution classic masterpiece, essential Optimal Control)

Fuzzy logic algorithm

图像经过二维傅立叶频谱分析后，用此函数可以求取频谱的环向、楔向特征。在图像分析中具有较大用途。(After two-dimensional Fourier spectrum image analysis, this function can be used to strike a spectrum of the ring, to the characteristics of wedge. In the image analysis with a larger purpose.)