PM

非圆形离散元程序，通过采用非圆形颗粒实现康转动性能(Non-circular discrete element program, through the use of non-spherical particles achieve Kang rotation capability)

最小二乘法拟合形如f(x)=(a+bx)/(1+cx)的函数（9.2.2(1))，并解决人口预测问题(9.2.2(2))(Least squares fit of the form f (x) = (a+bx)/(1+cx) function (9.2.2 (1)), and to solve the population prediction problem (9.2.2 (2)))

二维泊松方程的定解问题：用5点菱形异步迭代格式求解泊松方程，h=5/4 ,误差s=1e-6 (Differential method for Poisson equation)

说明：  经过个人修改的matlab科学计算程序，供初学者使用(MATLAB scientific computing and visualization simulation literature amended program can achieve numerical conversion between)

说明：  本程序基于matlab进行了声波在固体中的仿真模拟。(This procedure carried out based on sound waves in matlab in the simulation of solid.)

mimo系统中在高信噪比下，一个发射天线，两个接收天线的性能仿真。(mimo systems at high signal to noise ratio, a transmitting antenna, two receive antenna performance simulation.)

可以对高温状态下的混凝土材料进行准确的塑型模型构建(It can be used to construct accurate plastic model of concrete under high temperature)

适合运用fortran语言学习的人使用，对矩量法的公式进行了详细说明，有助于加深对矩量法的理解(Suitable for the use of FORTRAN language learning people use, the formula of the method of moments are described in detail, help to deepen the understanding of the method of moments)

T矩阵方法的FORTRAN环境下的程序，希望对大家有帮助！(T matrix method program FORTRAN environment, we want to help!)

说明：  借助python3计算偏微分方程组，并作出相应图形，代码简单易懂，方便修改(Calculate partial differential equations)