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本程序可以显示常见激光模式分布图，如TE00，TE01,TE10,TE22等，有助于对激光横模的理解！(This program is to help students to understand to the laser mode )

说明：  分两层取两个不同速度的绕射扫描叠加偏移方法(migration code based on diffraction stack)

空间面板，直接和间接效应，LM检验,包括例子，代码等等。(The demo contains files to estimate all spatial econometric models based on an exact calculation of the Jacobian term in the log_likelihood function. Supporting files to print the results, to calculate (robust) LM-test statistics and to calculate direct and indirect effects are also included.)

基于GSF方法的潮流计算，MATLAB程序，故障预算，case30(GSF method based on flow calculation, MATLAB programs, fault the budget, case30)

说明：  Matlab 是套應用於科學與工程領 域中數 值計算、分析與模擬的應用軟體，結合了 數 值分析、矩陣運算及繪圖等功能，功能強大、操作介面簡易 。在大學線性代數 及微積分課程中均可應用 Matlab 來 輔助學習。(Matlab 是??)

image segmentation using wavelet

The effects of multipath include constructive and destructive interference, and phase shifting of the signal. This causes Rayleigh fading, named after Lord Rayleigh. The standard statistical model of this gives a distribution known as the Rayleigh distribution. Rayleigh fading with a strong line of sight content is said to have a Rician distribution, or to be Rician fading.

Tranformasi wavelet merupakan perbaikan dari transformasi Fourier. Transformasi Fourier hanya dapat menangkap informasi apakahsuatu sinyal memiliki frekuensi tertentu ataukah tidak, tapi tidak dapat menangkap dimana frekuensi itu terjadi. Jika Transformasi Fourier hanya memberikan informasi tentang frekuensisuatu sinyal, maka transformasi wavelet memberikan informasi tentang kombinasi skala dan frekuensi

说明：  该程序通过模仿生物的遗传特点，解决全局最优解的问题(The program solves the problem of global optimal solution by imitating the genetic characteristics of organisms)

OFDM Channel schemes