CA-and-the-sand-pile-model

substitution cipher is the method of encoding in which unit of plain text are replaced by cipher text. Monoalphabetic cipher uses a fixed message over entire message.A monoalphabetic cipher uses fixed substitution over the entire message.The monoalphabetic substitution takes a letter of an alphabet and substitutes it with another letter, this way a ciphertext is generated. The way of converting is fixed. A character of the plaintext will be replaced by the same ciphertext character, during the entire ciphertext. There is no additional key. The only way of security is to keep the substitution-table secret. A popular example for the monoalphabetic substitution is the caesar cipher.

详细的介绍了VC和matlab之间的编程接口，让你的VC里面轻松的调用Matlab的函数，我觉得很好，强烈推荐给大家(Detail between the VC and matlab programming interface, allows you to easily inside the VC call Matlab function, I feel very good, strongly recommended to everybody)

这是我用matlab编写的一个解不定方程的程序，已经测试通过。该程序使用了比较多的技巧，对于matlab的爱好者可能有所帮助(I used Matlab to prepare a solution of indeterminate equations procedures have the test. The procedure used a lot more skills, Matlab lovers might be helpful)

pso codes for the OPTIMIZATION of the grid 44 buses in IEEE system

用IGBT元器件进行的三相全控整流桥的仿真电路(Components used for the three-phase IGBT full bridge controlled rectifier circuit simulation)

all batteries used in traction chain in elevtric vehicl

说明：  matlab实验 用给定的多项式，y=x3-6x2+5x-3，产生一组数据(xi,yi，i=1,2,…,n),再在yi上添加随机干扰(可用rand产生(0,1)均匀分布随机数,或用rands产生N(0,1)分布随机数)，然后用xi和添加了随机干扰的yi作的3次多项式拟合，与原系数比较。 如果作2或4次多项式拟合，结果如何？ (matlab experiment with a given polynomial, y = x3-6x2+5 x-3, generated a set of data (xi, yi, i = 1,2, ..., n), then add random noise in yi (available rand generation (0,1) uniformly distributed random number, or rands generated N (0,1) random numbers), then xi and yi to add a random disturbance polynomial fitting for the three times, compared with the original coefficient . If 2 or 4 times for polynomial fitting, the result?)

帮助了解matlab各种显示函数的用法，方面图像的分析(display function)

本程序是自己写的，经过验证的，瑞利衰落信道下的BPSK信号仿真(This program is written in their own, after verification, simulation of BPSK signals in Rayleigh fading channels)

matlab实现的RGB空间转换到HSI空间，以供参考(matlab realize RGB space conversion to HSI space for reference)