Partial-differential-equations-student-solutions-

组合需要读取的图像文件直接路径和间接路径，读取jpg图像，并计算压缩图像和无压缩图像的均方值和LMSE(Combination needs to read the image files of the direct path and indirect path, to read the jpg image, and calculate the mean square value of compressed images and uncompressed images and LMSE)

空间金字塔理论处理卷积神经网络的特征，具备很好的空间性能(spatial neutral network)

随机改变一个矩阵的行的顺序生成新矩阵 保持数据不变(Randomly changing the rows of a matrix to generate a new matrix)

实现不同噪声情况下qpsk的调制，并得出了星座图。(Implement different noise situation of QPSK modulation and the constellation diagram is obtained. )

单相桥式整流电路simulink仿真模型(Single-phase bridge rectifier circuit simulink simulation model)

ieee most standard and mostly prefered professionals computer science and information tech. trascation paper for project or seminar

介绍了平均电流控制型 PFC Boost 变换器的结构， 分析了其工作原理。 分别采用 Power System 工具箱和考虑电感电流断续工作状态的 C-MEX 文件 S 函数建立了主电路模型，对平均电 流控制型 PFC Boost 变换器进行了仿真。仿真结果表明，与 Power System 工具箱模型相比，基于 C-MEX 文件的 S 函数仿真模型能够准确仿真电流断续工作状态，仿真速度快。设计了电路样机进 行了实验研究，仿真结果与实验结果一致，证明了该方法的正确性。利用该方法可以高效地仿真 研究系统结构和参数变化时性能变化情况，得到的平均电流控制型 PFC Boost 变换器的混沌分岔 图，为更好地理解和设计这种变换器提供了有利的工具。(The structure of average current controlled power factor correction (PFC) Boost converter is introduced, and its working principle is analyzed. The PFC Boost converter is simulated using the model established with Power System toolbox and the C-MEX file S-function model respectively. Simulation results show that the C-MEX file S-function model can simulate the all state of the converter including discontinuous conduction mode with high speed. Experimental results show the correctness of the simulation results and the proposed method. The method is suitable for simulation the performance changing with the variation of system structure or parameters. The bifurcation diagram is derived for PFC Boost converter using this method, which is very useful for better understanding and better design of the converter.)

交错网格声波方程正演模拟，PML吸收边界，比较适合刚刚接触的学者。交错网格有限差分地震波场计算，二维的声波正演，利用空间10阶，时间2阶。(The CalCulation of the SeismiC Wave一 fieldwith Staggered-grid Finite difference Sheme)

在matlab上实现的卡尔曼滤波器仿真实验，代码全部注释过了，有利于学习卡尔曼滤波器的参考学习(Implemented in the Kalman filter matlab simulation code all over the comment, the Kalman filter is conducive to learning refer to learning)

非参贝叶斯字典学习用于图像去噪的matlab代码(BPFA denoising matlab code for the paper nonparametric bayesian dictionary learning for analysis of noisy and incomplete images download http://www.ee.duke/~mzl/Results/BPFAImage/.)