MATLAB2

matlab最新的时频工具箱，更新时间2008.2.15，请将其加压后放于toolbox中，并在matlab中将其添加到搜索路径中使用。(the latest time-frequency matlab toolbox, updated 2008.2.15, please put in after the pressure in the toolbox, and will add it to the matlab search path to use.)

计算变分问题的一种新的方法，收敛快速且数值稳定(Variational calculation of the problem, a new method of fast convergence and numerical stability)

matlab数值计算书籍，喜欢的话可以买正版书籍(matlab numerical books like it you can buy legal copies of books)

matlab30个案例算法之一，对学习有很大帮助(the one of matlab30 case algorithm learning)

用于船舶电力推进系统电磁兼容性评估的程序(Ship electric propulsion system for electromagnetic compatibility assessment procedures)

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.

自己写的Floyd,没有理解Folyd的同学可以拿去参考一下啦!!!!(Wrote it myself Floyd, do not understand Folyd students can refer to you instead!!!!)

换能器散射回波信号声强预测，可自拟发射和接收换能器的类型及指向性，海底散射强度，得到不同条件下的散射回波信号声强(Transducer scattering echo sound intensity forecasts can be self-transmitting and receiving transducers of the type and point to the seabed scattering intensity, obtained under different conditions of scattering echo signal sound intensity)

this is about pattern recognition.

说明：  NN neural network for face recognition supervised feed forward back propagation neural network