mixture_of_gaussians

将声音文件在时间轴上分割成几段，分别将段的秩序及某些段内的秩序颠倒，从而实现了对声音文件的加密。首先，先读取一个声音信号，对信号做1024点FFT变换，取完点之后，分成四个向量，四个向量组成一个矩阵，再对每一个向量进行转置，再重新整合，从而就实现了回密的过程。(Sound files on the timeline will be divided into paragraphs, each paragraph of the order and reversed the order of some paragraphs to realize the encryption of sound files. First, the first reading of a voice signal, the signal was 1024 points FFT transform, check after the completion point, divided into four vectors, the four vectors form a matrix, then for each vector transpose, re-integration, which will achieve a return to close the process.)

素数的判定，miller-rabin，sol-str,leman,fermat等。都可以运行，下完自后自己稍微改改就可以用。(Primes judgment, miller-rabin, sol-str, leman, fermat so on. Can run is finished after their own little changed since it can be used.)

Solution manual for chapter one Hayt book of electromanetism.

汽车制动防抱死系统参数标定程序，用于分析汽车动力学特性，需要与carsim汽车仿真软件进行联合仿真，否则车辆模块出现badlink。(Automotive anti-lock braking system parameter calibration procedures for the analysis of vehicle dynamics, need with carsim automotive simulation software co-simulation, vehicle module badlink.)

说明：  电力系统节点导纳矩阵的形成，自己编写的供大家参考，谢谢(Power system nodal admittance matrix of the form, I have written for your reference, thank you)

说明：  利用matlab进行sift特征匹配，有需要的可以下载利用相关函数(Using MATLAB to match SIFT features, we can download and use correlation functions)

基于MATLAB的时域采样以及频谱分析，对初学者很有用(MATLAB-based time domain sampling and spectral analysis, is useful for beginners)

同步发电机 两相对地短路仿真（无阻尼情况）(Synchronous generator two relatively short-circuited (no damping))

2D傅立叶变换，上课的小作业，包含报告和源码(2D Fourier transform, the small school assignments, reports and source code that contains)

：在有限区域内分布的稀疏不均的、具有一定分布结构的海量数据集的高效、高精度聚 类问题是一个尚未完全圆满解决的难题。针对Affinity Propagation 聚类算法(AP)的不足之处， 提出了两个改进型的聚类算法(n limited areas of uneven distribution of sparse, has certain distribution structure of the mass datasets of high efficiency, high precision together Problem is a perfectly solved problem has not yet completely. For Affinity Propagation clustering algorithm (AP) of the deficiencies, Put forward the two improved version of the clustering algorithm)