fangzhen

一维水质模型，本程序研究一维河流的污染物扩散，短时间持续排放BOD的浓度变化规律 本程序采用中心隐式差分求解 问题t=0到t=1h偶然排放BOD 使河水断面L0=10mg/L河流平均速度5km/h 纵向弥散系数D=2km2/h BOD衰减系数k1=0.015h-1 解BOD浓度 L(x，t)(One-dimensional water quality model, the procedure of one-dimensional dispersion of pollutants in the river, a short continuous changes of the concentration of BOD emissions of the program implicit difference method with central issues t = 0 t = 1h accidental emissions to the BOD to the river section L0 = 10mg/L average speed of the river 5km/h vertical diffusion coefficient D = 2km2/h BOD decay coefficient k1 = 0.015h-1 Solution for BOD concentration L (x, t))

混沌粒子群CPSO，内附混沌粒子群的相关理论和改进的论文(Chaotic particle swarm CPSO, the related theory of chaotic particle swarm and the improved thesis)

说明：  用matlab的simulink实现buck_boost变换器仿真，并用PI控制器控制输出。(Implementation of buck with Simulink of MATLAB_ The boost converter is simulated and the output is controlled by PI controller.)

计算心理声学的一些参数，比如响度，sharpness，粗糙度等等。(Psychoacoustic calculation of some parameters, such as loudness, sharpness, roughness and so on.)

二维方位角/仰角的music算法DOA估计程序(2D azimuth/elevation to the music algorithm DOA estimation procedures)

像素相关性计算函数，该指标对于衡量一个加密后的图像安全性能(Pixel correlation calculation function, the safety performance indicators for measuring an image after encryption)

读取IGS文件（观测文件*.*o 广播星历*.*n；精密星历*.sp3；修正电离层对流层）。均是matlab函数形式，可直接用于GPS matlab数据处理(reading IGS files (oberservation file*.*o navigation files*.*n precise orbit*.sp3) correct errors of Ionosphere delay and Tropsphere delay)

基于连续hopfield网络的TSP问题解决方法(Based on continuous hopfield networks TSP problem solving)

MIMO OFDM matlab仿真,用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述,对信号进行频谱分析及滤波。( MIMO OFDM matlab simulation, Monte Carlo simulation method of calculating the American option price and basic description, The signal spectral analysis and filtering.)

简单的实例，介绍了基本的用法，适合有一定基础的学者，可以巩固自己的知识(Simple example, describes the basic usage, there is some basis for scholars, can consolidate their knowledge)