dijkstra

emd用MATLAB编程，用幻灯片演示，很形象直观(emd MATLAB programming, using slide shows, a very visual image)

matlab用户图形界面用法的一个小例子。用到了文本框、滚动条等控件，对刚开始学习matlab有一定的帮助。(matlab graphical user interface uses a small example. Used in the text boxes, scroll bars, and other controls, just started learning matlab have some help.)

this function is used for resizing the cropped images got the process of character extraction for the first step of build a ANN. This is useful because it can resize a lot of images in one folder.

基于MATLAB利用Particle-in-cell模型,对梯形管内壁等离子体离子注入过程,进行了二维数值模拟.计算结果表明在中心电极附近出现了“阳极鞘层”,该鞘层内部不存在离子,而且在鞘层边缘离子密度最高.在上下管壁上的离子注入剂量呈现“m”形分布.通过对注入过程中等离子体密度分布和不同时间段管壁不同位置离子注入剂量的跟踪,发现“阳极鞘层”扩展行为是导致“m”形分布的原因.由于梯形管形状的不对称性,“阳极鞘层”的边缘向梯形长底方向扩展较快.在注入初始时刻离子注入的能量很低,随着时间延长离子能量逐渐升高,这是由离子初始位置决定的.可见梯形管自身形状决定了鞘层形状和最终的离子注入能量和剂量分布.(Based on MATLAB use Particle-in-cell model, the trapezoidal pipe wall plasma ion implantation process, the numerical simulation of two-dimensional calculation results show that in the vicinity of the center electrode to a "anode sheath," which does not exist inside the plasma sheath, and the highest in the sheath edge ion density ion implantation dose showing the upper and lower walls of the "m"-shaped distribution through the process of injecting the plasma density distribution and the wall at different locations in different time periods ion implantation dose tracking, found that "anode sheath "extension behavior is leading to" m "-shaped distribution of the reasons due to the asymmetry of the trapezoidal shape of the tube," Edge anode sheath "extension to the end of a long trapezoid direction quickly in the initial moment of implantation energy ion implantation is low ion energy with time gradually increased, which is determined by the initial position of the ion. visible trapezoida)

stegenogrpahy in matlab based on dwt

PID控制是工业工程中经常应用的方法，也比较成熟，本例中给出了伺服PID控制的私募林肯仿真(PID control is often applied in industrial engineering, is more mature, in this case gives the servo PID control of the private Lincoln simulation)

this ias uase in anay appacation

均匀完全弹性介质中声波传播的正演模拟,采用标准交错网格算法，SPML作为吸收边界(the propagation simulation of acoustic wave in uniform and purely elastic medium. we use SPML as the boundary conditions.)

unit commitment problem

分数阶傅里叶变换(Fractional Fourier Transform, FrFT)，实现线性调频(LFM)信号的参数估计(调频斜率和初始频率)。由粗到细搜索分数阶傅里叶变换的阶数。需要到网上自行下载一个工具函数frft.m.(It is about estimationg the frequency modulation rate and initial frequency of linear frequency modulation (LFM) signal using the fractional Fourier transform (FrFT).It need a function frft.m which could be found in the internet.)