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写一个对文本文件加密的程序和一个解密的程序。密码规则是：对于小写字母，a换成x，b换成y，c换成z，d换成a，e换成b，...；对于大写字母，A换成X，B换成Y，C换成Z，D换成A，E换成B，...；其他字符不变。

超级简单，用z变换的方法编写的求离散数据相关的算法。

MS-Clustering is designed to rapidly cluster large MS/MS datasets. The program merges similar spectra (having similar m/z values ?within a given tolerance), and creates a single consensus spectrum as a representative. The input formats accepted are: dta, mgf, mzXML. The output format is mgf.

三轴加速度传感器读数据，计算x,y,z,三个倾角度数，可以测速度。

fft.c--This computes an in-place complex-to-complex FFT x and y are the real and imaginary arrays of 2^m points. dir = 1 gives forward transform dir = -1 gives reverse transform

This computes an in-place complex-to-complex FFT x and y are the real and imaginary arrays of 2^m points. dir = 1 gives forward transform dir = -1 gives reverse transform

The tca package is a Matlab program that implements the tree-dependent component analysis (TCA) algorithms that extends the independent component analysis (ICA), where instead of looking for a linear transform that makes the data components independent, we are looking for components that can be bes ...

用MATLAB实现数字信号处理的程序，包括FIR、IIR设计，以及Z变换、FFT变换

1D FDTD simulation between free space and dielectric medium with absorbing boundary conditions,calculating the fourier transform of electric field

是《MATLAB数字信号处理与应用》一书的源代码,该书由李正周编著 清华大学出版社出版 2008年5月 本书主要介绍基于MATLAB R2006a的信号分析与处理的原理和应用。全书共分为7章：第1章对MATLAB R2006a的特点与MATALB的基本使用进行了介绍，第2章～第7章分别讲述了MATLAB中信号处理工具、MATLAB离散时间系统与Z变换、数字滤波 ...