Laplace

fast matrix multiplication

《精通Matlab数字图像处理与识别》（张铮等）书本代码(" Mastering Matlab digital image processing and recognition" (Zhang Zheng, etc.) code books)

calculate to define the relation between a reference object and another object in the image using the superior value , according to the dilation of the reference object using mathematical morphology

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)

模块化多电平仿真分析,可用于电力系统分析计算，高压直流仿真分析，毕业论文必备模型。(Modular multi-level simulation analysis, can be used for power system analysis and calculation, high voltage DC simulation analysis, the essential model of graduation thesis.)

是一种用于含有隐变量（hidden variable）的概率参数模型的最大似然估计或极大后验概率估计的matlab算法。 (EM MATLAB)

说明：  小波变换滤波的matlab程序的实现用于图像的背景抑制(Wavelet filter for image matlab program to achieve the background suppression)

12可视化大肠杆菌亚细胞结构使用稀疏反褶积空间光干涉tomography.pdf(12Visualizing Escherichia coli sub-cellular structure using sparse deconvolution spatial light interference tomography.pdf)

说明：  matlab 中的ＢＰ神经网络　处理信号　欢迎下载(matlab ＢＰ)

该程序是在flac下运行的，没找到flac，所以用matlab表示了，供岩土力学研究方向学习(The program is run under flac, did not find flac, so use matlab shows for rock mechanics research study)