Riemann-problems

用python写的牛顿迭代法和牛顿插值法，数值分析的实验(Newton iteration method and Newton interpolation method written in Python, numerical analysis experiment.)

说明：  FFT正变换和逆变换，了解FFT变换的实质(FFT transform and inverse transform is to understand the substance of FFT transform)

Fortran算法集徐士良版，数值模拟，矩阵运算、线性方程求解、非线性方程求解、插值、数值积分(Fortran algorithm set Xu tillian version, numerical simulation, calculation of matrix, linear equations, nonlinear equations, interpolation, numerical integration)

给定求解区间，用最小二乘法给出函数的零点，并给出迭代次数(Given the solution interval, the zeros of the function are given by the least square method, and the number of iterations is given.)

MATLAB Simulink Simulation Platform for Photonic Transmission Systems

改进的极限学习机算法，具有更好的预测性能和稳定性(Improved limit learning machine algorithm)

晶体相场计算原子密度场分布和缺陷形成,基本程序，用于科学计算。基于Fortran 6.5编写，在其他应用程序中可能需要略微修改(Phase-field crystal modeling of atomic density field distribution)

四犬相逐问题的计算机模拟 mathematica程序源代码 (Four dogs with the problem by computer simulation source code mathematica)

说明：  一维黎曼问题，一维问题，即激波管问题，是一个典型的一维可压缩无黏气体动力学问题，并有 解析解。对它采用二阶精度两步差分格式进行数值求解。(Riemann problem, One dimensional problem, the shock tube problem, is a typical one-dimensional compressible non viscous gas dynamic problem with analytic solutions. It is solved numerically by two order two step difference scheme.)

基于最小二乘估计的圆心拟合，可计算出圆心坐标及半径(Estimates based on least squares fitting of the center of a circle, calculate the center coordinates and radius)