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用matlab来实现密码登陆窗口代码，一个程序(code enter)

Matrix techniques for modelling ultrasonic waves in multilayered media。This paper presents a review of the main developments of the matrix techniques, and their use in response and modal models, with emphasis on ultrasonics applications(Matrix techniques for modelling ultrasonic waves in multilayered media)

About sift algorithm

MATLAB编程经典教程，中文译本，简单易懂(MATLAB programming classic handbook, Chinese translation, easy to understand)

在通信中的仿真，很有用，涉及到通信技术中关键技术的仿真(In communication simulation, very useful, related to communication technologies in key technology simulation)

实现通信原理上的PCM（脉冲编码调制）调制与解调等 功能(MATLAB PCM)

基于UP、UPF、CRPF的WSN目标跟踪算法，然后对 其基于CRPF的目标跟踪过程进行描述。(Based on the characteristics of low cost,low power,small size,high redundancy and multi-function,it is more convenient,more reliable and more effective for WSN to apply to target tracking than traditional system.)

光栅模式传输 运用耦合模理论，有公式推导，直接明了，可以更改参数(Optical fiber grating transmission function simulation and may, according to the need of reality, change all kinds of parameters )

差值问题中的拉格朗日插值的MATLAB源程序(Issue of the margin of the Lagrange interpolation of the MATLAB source code)

image an ECG(.csv) with Zeroline-Filter