cccccccc

说明：  对离散数据运用最小二乘法进行椭圆拟合，运行过了觉得还不错就上传了。(Discrete data on the use of least squares method for ellipse fitting, run over a feel good on the uploaded.)

本实验将使用MATLAB 7.0软件分别对20钢的离子渗碳和气体渗碳过程进行模拟，渗碳时间分别为1h、2h、8h、20h，渗碳温度分别为1203K、1223K、1273K、1323K。对20钢的其中一面进行一维气体渗碳，设该扩散系数和界面传递系数均与渗碳浓度无关，对渗碳厚度、渗碳速度、渗碳量和渗碳时间、渗碳温度的关系进行模拟。(In this study, using MATLAB 7.0 software 20 steel ion carburizing and gas carburizing process simulation, carburizing time were 1H, 2H, 8h, 20h, carburizing temperature of 1203K, 1223K, 1273K, 1323K. 20 steel one side of a one-dimensional gas carburizing, set the diffusion coefficient and interface transfer coefficient has nothing to do with the concentration of carburizing, the relationship of the thickness of the carburizing, carburizing speed, carburizing and carburizing time, carburizing temperature simulation.)

接收机qpsk解调的Matlab仿真程序(QPSK demodulation receiver Matlab simulation program)

MATLAB和JAVA的混合编程研究与实现(MATLAB and JAVA programming of the Research and Implementation of Hybrid)

计算DWT小波变换的JND值（恰可察觉性失真），用于图像水印的实现。以及DCT的水印实现(Calculate the DWT wavelet transform value of JND (Just Noticeable Distortion) for the image watermark. As well as the watermark of the DCT)

File to calculate dimension of patch antenna

本文件包括了蒙特卡洛所以常用的模拟方法，是初学者比较好的学习教材~(The document includes the Monte Carlo simulation methods commonly used so it is good learning materials for beginners ~)

南极三维坐标转换算法,三维平面坐标系到极方位等角坐标系(3d coordinate system transform of antarctic)

资料为matlab PLL_ADC_DDS建模资料，值得参考。。。(nformation for matlab PLL_ADC_DDS modeling data, worthy of reference.....)

Uncoded System performance in BSC channel.