huffman-algorithm

css效果，鼠标放上去之后图片灰色转彩色(After the mouse on image gray color)

购买matlab学习类书籍中光盘自带matlab实例教程，附有完整代码，希望有需要的朋友可以借鉴。(Buy them in the books matlab disc with matlab instance tutorial, with complete code, hope that a friend in need can draw lessons from.)

本程序展示了小波分解， 重构，小波的高通滤波器，低通滤波器 的程序(This procedure demonstrated the wavelet decomposition, reconstruction, wavelet high-pass filter, low pass filter process)

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.

增量动力分析方法是近年来发展起来的一种用于评价结构抗震性能的动力参数分析方法。(Incremental dynamic analysis method is dynamic parameters analytical method for uating seismic behavior of structures developed in recent years.)

说明：  小波分解 语音降噪 例子 正常运行 matlab(Wavelet decomposition speech denoising example normal operation)

a source code for calculate entropy in matlab

Yaakov Bar-Shalom, X.-Rong Li,Thiagalingam Kirubarajan - Estimation with Applications to Tracking and Navigation - DynaEst toolbox (Yaakov Bar-Shalom, X.-Rong Li,Thiagalingam Kirubarajan- Estimation with Applications to Tracking and Navigation- DynaEst toolbox )

典型的分形程序，实现Sierpinski地毯，雪花，倒三角，dragon等等(A typical fractal procedures to achieve Sierpinski carpet, snow, inverted triangle, dragon, etc.)

三维有限时间差分法计算矩形谐振的例子编程(three-dimensional finite-difference time rectangular resonant examples of Programming)