example03_09

说明：  二次型准牛顿BFGS 公式,用于计算非线性函数(second type quasi-Newton BFGS formula used to calculate the nonlinear function)

基于扩展卡尔曼滤波单站观测距离的目标跟踪程序，可以直接运行(Extended Kalman Filter single station observation distance of target tracking program can be run directly)

周期信号的合成、分解与Gibbs现象.ppt

使用一篇论文提供的方程组和参数——分形仿射变换方法转换过来的MATLAB程序，画一片蕨叶。输入是起始坐标x0,y0和迭代次数——一般在几万次，十万次比较清晰。(Plotting the leaf with equations and parameters given by an essay. This method is fractal theory. The input is the location of starting points x0,y0 and the iteration times(100,000 times can produce a clear picture.))

说明：  双音频按键识别 背景： 打电话拨号时，每次按键会发出不同的声音，这些声音实际上是由一些固定频率的正弦信号合成的。因为每个按键声音包含两个不同频率的正弦信号，因此也被称为“双音频”信号，简记为DTMF。这相当于是对不同键位用‘音频’进行了编码，如同计算机领域中用数字0和1对处理对象（包括键盘）进行编码。(Two-tone buttons identify Background: When you call dial, each key emits different sounds, which is actually made up of some fixed frequency sinusoidal signal synthesis. Because the sound of each key contains two sinusoidal signals of different frequencies, it is also known as &quot two-tone&quot signal, abbreviated as DTMF. This is equivalent to different keys using the ' audio' encoded, as the computer industry with the numbers 0 and 1 pair of processing object (including the keyboard) to be encoded.)

这是中国数学建模中编程交流上神经网络内容，里面提供了很多神经网络的例子(This is the mathematical modeling of neural networks on the content of the exchange program, which provides many examples of neural network)

说明：  短时傅里叶分析，时频分析等，m文件集合，tftb(Short time Fourier analysis, time-frequency analysis)

Zooming no.1 method based on gonzalez book.

Encryption algorithms are becoming more necessary to ensure data is securely transmitted over insecure communication channels. FOX is a recently developed algorithm and its structure is based on the already proven IDEA (International Data Encryption Algorithm) cipher. FOX is a symmetric (private key) block cipher. Its top-level structure uses the Lai-Massey scheme and the round functions used in the scheme are substitution permutation networks (SPN). Its flexibility lies in the fact that it can be efficiently implemented in hardware and software. We report some of the first results of implementing the cipher on an FPGA

最优潮流计算，matlab版，希望对电力系统仿真的同志有用！(OPF, Matlab version, and I hope to the power system simulation comrades useful!)