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Program for Image Halftoning by Floyd Method: The input gray image will be converted into halftone image of same size using Floyd s Error Diffusion Method.

modulation techniques used in comminication

Calc standard error of the mean or non-parametric confidence intervals for samples of a time series

说明：  通过经验模态分解emd波形分割，将脉冲波形分为多个部分，基于EMD的时频分析方法既适合于非线性、非平稳信号的分析(By empirical modal decomposition emd waveform segmentation, the pulse waveform is divided into several parts, and the time frequency analysis method based on EMD is suitable for nonlinear and non-smooth signal analysis)

直流电机的空载特性仿真程序，可以求电机的额定电动势(motor machine)

计算一个一位序列的极值（极大与极小） 并标注他们的位置 作图示意 并讨论在序列起始与终点的极值近似(Calculate a sequence of extremal (maximum and minimum) and marked their position plotted schematically and discussed in sequence starting with the end of the extreme value approximation)

indexing image and search by name

Cholesky分解，以某个具体的矩阵进行的分解，便于求解线性方程组(Cholesky decomposition)

最优化 最速下降法 黄金分割法 DFP 乘子法(Optimization Steepest descent method)

this source code is face recognition