matlab_and_com_programming

％ 本程序实现2维TM波FDTD仿真 ％ 此程序用PML设置吸收边界条件 ％ FDTD_2D_kongqi_PML ％ 仅喊有Ez,Hx,Hy分量( Of the procedures to achieve 2-D TM wave FDTD simulation this program set up with PML absorbing boundary condition FDTD_2D_kongqi_PML have only shout Ez, Hx, Hy component)

MATLAB遗传算法工具箱之一-gatbx (MATLAB Genetic Algorithm Toolbox)

根据设定的m,n的值，可以产生不同的衍射散斑图。(In accordance with the set m, the value of n, can produce different diffraction speckle pattern.)

一个bp的逼近算法(an approximation algorithm bp)

说明：  实现多愊图像的隐藏，对于隐藏算法有很好的学习(Multi melancholy images of hidden, hiding algorithm for learning good)

cientific method refers to a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.[1] To be termed scientific, a method of inquiry must be based on gathering observable, empirical and measurable evidence subject to specific principles of reasoning.[2] The Oxford English Dictionary says that scientific method is: "a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses."[3] Although procedures vary from one field of inquiry to another, identifiable features distinguish scientific inquiry from other methods of obtaining knowledge. Scientific researchers propose hypotheses as explanations of phenomena, and design experimental studies to test these hypotheses. These steps must be repeatable

绘制序列及其傅里叶变换的幅值图，并求逆变换。一个matlab程序。(Draw sequences and Fourier amplitude figure, and pray for inverter change. A matlab application. )

Contrast Enhancement Utilities (Image Equalization)

设计切比雪夫I型低通滤波器，本文件主要应用冲击响应不变法设计，为课堂上老师留的作业(Design Chebyshev type I low-pass filter impulse response of the main application of this document the same method designed for classroom teachers to stay on the job)

十四单元的matlab程序，有少许改动。(14 unit matlab procedures, there are little changes.)