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将声音文件在时间轴上分割成几段，分别将段的秩序及某些段内的秩序颠倒，从而实现了对声音文件的加密。首先，先读取一个声音信号，对信号做1024点FFT变换，取完点之后，分成四个向量，四个向量组成一个矩阵，再对每一个向量进行转置，再重新整合，从而就实现了回密的过程。(Sound files on the timeline will be divided into paragraphs, each paragraph of the order and reversed the order of some paragraphs to realize the encryption of sound files. First, the first reading of a voice signal, the signal was 1024 points FFT transform, check after the completion point, divided into four vectors, the four vectors form a matrix, then for each vector transpose, re-integration, which will achieve a return to close the process.)

系统参数变化，用集合卡尔曼滤波器估计其变化(System parameters used to estimate the changes in the ensemble Kalman filter)

dipole antenna radiation graphics: 2D cuts, the other as a cut in phi would be expected to be an isotropic behavior (circle) with changing radios. THE 3D I have not managed to get the animation

基于有限元基础编写的方形流道内不可压稳态流动。(Based on the the square flow passage prepared on the basis of the finite element incompressible steady-state flow.)

运用matlab,实现16QAM调制与解调，串并转换，信道建立（瑞利多径信道），星座映射，是毕业设计之必备资料(Use matlab, realize 16QAM modulation and demodulation, SERDES, channel establishment (Rayleigh multi-path channel), constellation mapping, is a graduate of the necessary design information)

函数优化，随机输入一个函数，优化产生最优值。(Function optimization, random input a function, optimization produces optimal value.)

a document for learning a bout neral network

模型参考自适应程序。用于无速度传感器，做矢量控制(matlab)

说明：  MATLAB编程，国外高校电子信息类优秀教材，英文影印版(MATLAB programming, outstanding foreign university electronic information materials, photocopying English version)

Minkowski香肠线 迭代分形图 Matlab(Minkowski sausage line iteration fractal images)