DS1643

Algorithms for the extraction of the extrema of a signal

Logging message in matlab

matlab图像处理实例详解——数字图像的运算(matlab image processing example explanation- digital image computing)

实现支持向量回归，能够实现小样本的回归预测分析(Regression analysis to realise the prediction base on small sample)

利用粒子滤波算法实现预测，算法可直接运行(particle filter prediction)

pid控制模型的matlab源程序，极佳的学习资料，适合学习(the material for the pid control study)

wimax matlab 程序，可以解决wimax仿真与测试的问题(wimax matlab program)

PSO ALGORITHM for PSO optimization in matlab

Data Encryption by Matrix Multiplication We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.

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