原图象加上水印-dct1_recover

在matlab中演奏卡农，很有趣的一个程序，可以学习怎样用matlab控制计算机发出有规律的声音(play Canon on Matlab)

solves the diffusion equations

Keogh的SAX聚集近似算法，首先采用PAA分段，然后正态化序列，在对应表上查询符号表示，这是一个很经典的时间序列表示方法(Keogh' s SAX gathered approximation algorithm, the first use PAA segment, then normal sequence, query on the corresponding symbol table indicates, this is a classic representation of the time series)

关于脉冲信号的matlab程序。包括单边衰减指数信号，正弦信号，抽样信号，矩形脉冲信号等。(matlab program about pulse signal.)

这是一个用MATLAB编程得到的白噪声程序，主要的作用就是用于学习(White noise generator program, complete procedures for system identification or signal processing)

Simple Math games foe blinds peoples

基于动态规划算法的蛋白质序列比对 Needleman-Wunsch Smith-Waterman(protein sequence alignment Needleman-Wunsch Smith-Waterman)

本文围绕以可再生能源发电装置和蓄电池储能为主体的微网系统展开研究， 介绍了微网系统半实物仿真平台的设计思路和实现方法，并对微源的控制策略以 及微网系统的并离网切换特性进行研究(This dissertation focuses on microgrid with only renewable resources and battery inverters，points out mentality of designing and implementation method of the microgrid power hardware-in—the-loop simulation(PHILS)platform，and researches on microsources control strategies and microgrid grid—connected and islanding switching method)

粒子群算法(pso)标准测试函数验证程序。在一个m文件中包括了目前文献中用于验证的7个标准测试函数(Ackley等)、三维动态显示，粒子过分集中时打散等功能。旨在为学习和研究者pso算法的同仁提供一个功能较为完备、简单易懂的标准版本，对于初学者可以通过此程序快速的实现入门，以便将更多的精力投入到深层次的研究中去！同时愿与所有致力于此的朋友共同探讨pso算法的改进与应用方面(如多目标、动态系统等)的经验。(验。-PSO algorithm (PSO) standard test function verification process. M in a document, including the current literature is used to validate the seven standard test function (Ackley), 3D dynamic display, and the over-concentration of particles scatters when the function. Designed for researchers to study and colleagues at the PSO algorithm to provide a more complete functional and easily understood standard version, for beginners through this program to achieve rapid entry. in order to be more energy into depth study! While willing to work with all the friends here to discuss PSO algorithm improvements and applications (such as multi-target, Dynamic systems, etc.) experience.)

Calculate the Mean Square Error (MSE) and the Peak Signal to Noise Ratio (PSNR) for different JPEG compression ratios.