ring-current-magnetic-point-charge

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

利用matlab写成的窄带噪声发生，处理信号的时频分析，窗函数法设计一个数字带通FIR滤波器。( Using matlab written narrowband noise occurs, When processing a signal frequency analysis, A window function design FIR digital band-pass filter.)

采用最新的canny算子实现了边界拟合程序给定图形后可以直接使用(use of the latest canny operator realization of the border fitting procedures to be determined after the graphics used directly)

刘金坤教授《先进PID控制MATLAB仿真》中，灰色PID控制部分MATLAB源程序(Professor Liu Jinkun "Advanced PID Controls the MATLAB Simulation", gray PID control section MATLAB source program)

研究光子晶体的系统有参考价值的源程序，对科研有帮助,F90。(PC important)

LDPC编码调制系统，QPSK编码调制方式，研究生毕业论文源代码(LDPC coded modulation system, QPSK modulation coding, graduate thesis source code)

VEHICULAR DELAY TOLERANT NETWORKS-SURVEY

说明：  用于计算高斯核函数，可以放在别的函数内使用，方便快捷(Used to calculate Gaussian kernel function, can be used in other functions, convenient and fast)

十进制转化为二进制 m代码 很精简的一个代码，十六位二进制转化都十分迅速(Decimal into binary m code very concise code, very fast 16-bit binary conversion)

利用改进的蚁群算法，寻找最优路径，优化了算法运行时间(The use of improved ant colony algorithm to find the optimal path optimization algorithm running time)