task1

this is a code about dispersion diagram af a photonic crystal laser diod

说明：  异步电机直接转矩控制系统框图，在matlab/simulink环境下实现了整个系统的仿真运行，学习直接转矩控制的必备资料。(Induction Motor Direct Torque Control system block diagram, in matlab/simulink environment to achieve the whole system simulation run, the direct torque control of essential learning materials.)

这是所有精通MATLAB—综合辅导与指南的资料，已经全部在此了，希望对大家有益。(This is all proficient in MATLAB-comprehensive guide to counseling and information, have all been here, and we hope to benefit.)

MATLAB最小生成树，将权数从小到大排序，按顺序添加，如果形成圈则去掉(MATLAB minimum spanning tree, the weights of small to large order, in order to add, if the ring is removed to form)

program wich simulate a navigation system which used to avoid obstacal and go to the targetp point using potential method

copula时间序列模型在金融领域的应用(copula time series model applied in the financial sector)

这套算法包涵详细的注解 可直接在软件上进行仿真！(The algorithm bear with detailed notes Directly in the software simulation! )

本遗传算法用于目标函数在可行域最优质的寻找情况(The genetic algorithm feasible region for the objective function in the best looking case)

说明：  本文提出了一种基于混沌加密的DCT域二值图像数字水印算法.该算法首先利用混沌序列将含有版权信息的有意义二值图像水印进行加密,然后利用人眼视觉系统(HVS)的特性将原始载体图像进行块分类,最后将不同强度的水印分量嵌入到不同类的图像块DCT中频系数中去.利用混沌序列对水印进行加密,使水印本身具有安全性,对数字作品进行双重保障.通过高斯噪声,椒盐噪声以及JPEG压缩和剪切等攻击试验,表明了该算法具有较好的鲁棒性.(Encryption in DCT domain is proposed. Firstly, the meaningful binary image watermark containing copyright information is encrypted by using chaotic sequence, and then the original image is classified by using the characteristics of human visual system (HVS), Finally, the watermark components with different intensities are embedded into the DCT intermediate frequency coefficients of different types of image blocks. Chaotic sequences are used to encrypt the watermark, so that the watermark itself has security and double protection for digital works. Experiments on Gaussian noise, salt and pepper noise, JPEG compression and clipping show that the algorithm has good robustness)

《MATLAB时尚百例实例》实例84-1()