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string-data-encryption
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.
- 2012-06-24 02:58:53下载
- 积分:1
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P2_1-s2.0-S0031320310003675-main
Off-line signature verification based on grey level information
using texture features
- 2014-11-26 18:02:06下载
- 积分:1
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matlabwenjian
我们将五个连续时间信号转换成离散时间信号(we change five continuous signals into discrete signal.
)
- 2012-02-14 09:41:10下载
- 积分:1
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work
采用Jakes模型对一个简单的移动通信信道进行仿真。(Jakes model with a simple simulated mobile communication channel.
)
- 2010-10-25 20:22:03下载
- 积分:1
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zhuchengfen
利用matlab软件进行主成分分析,并做成图形用户界面(Using matlab software for principal component analysis, and made the graphical user interface)
- 2012-05-23 15:23:26下载
- 积分:1
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RA+网络编码
网络编码利用ra加网络编码awgn信道 调制利用cpm调制可以快速运行方便理解(Network coding uses RA plus network coding AWGN channel modulation and CPM modulation to run quickly and understand easily)
- 2020-06-23 08:00:01下载
- 积分:1
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NewIntelligentController
一种新型的智能控制器,分为定值控制和伺服控制两种情况,通过与PID控制的比较可以发现此新型智能控制器的优点。(A new type of intelligent controllers, will be divided into control and servo control value both cases, by comparison with the PID control can be found in this new type of intelligent controller advantages.)
- 2009-04-12 19:25:38下载
- 积分:1
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wudianchazhi
有限插分法求取泊松方程,非常经典啊,欢迎下载(Finite Difference Method to strike a Poisson equation, very classic ah, welcome to download)
- 2011-09-12 00:36:55下载
- 积分:1
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PCA
Matlab code - PCA face recognition
- 2011-10-04 21:40:57下载
- 积分:1
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肌电功率谱、积分肌电、RMS、MPF和MF
肌电功率谱,积分肌电等;不含预处理过程。(sEMG power spectrum, integral EMG and so on; no pretreatment process.)
- 2020-06-17 15:42:36下载
- 积分:1