数学实验——使用MATLAB 胡良剑主编

计算等径双圆筒透镜的场分布，并画出等位线分布图(Calculation of Electron Physics )

麻省理工大学k.j.bathe 教授开发的adina代码,欢迎大家下载,(adina sources by k.j.bathe MIT please download)

提出基于高速公路收费站进出口数据推算OD矩阵的一般方法。在缺乏初始OD矩阵的条件下,结合指数平滑法和无约束重力模型思想,通过VB编程反复迭代进行初始OD矩阵推算 利用组合模型预测高速公路各收费站出入口流量,通过弗雷特法进行OD分布推算。以沪宁高速公路为例证实此方法具有较高的精度。(Proposed highway toll station-based import and export data projections general OD matrix method. Lack of initial OD matrix conditions, combined with the exponential smoothing and unconstrained gravity model of thinking, through the VB Programming iterative initial OD Matrix Estimation flow of the use of a combination of model predictions highway toll station entrances and exits through Fratar Method for OD distribution projections. Shanghai-Nanjing Expressway, for example to confirm that this method has higher accuracy.)

说明：  基于CORDIC算法计算反正切函数。输入横坐标纵坐标及迭代次数，输出角度及弧度值；附CORDIC英文文档说明(atan function based in CORDIC algorithm)

一个由C语言写成的矩阵运算程序源代码，共初学者参考。(A C language source code matrix calculation, a total of reference for beginners.)

常用的matlab代码，非线性方程组求解，基本可以满足大学和研究生常用代码(Common Mathematical Codes)

半参数回归模型在测绘领域中的应用，先利用多期数据构建半参数回归模型，然后再预报未来多期数据(Semiparametric regression model applied in the field of surveying and mapping, the first use of multi-phase data to construct semi-parametric regression model, and then predict the future multi-phase data)

说明：  分段三次Hermite插值法 样条插值 切比雪夫最佳一致逼近 Legendre、 Laguerre、Hermite多项式主函数 牛顿 插值(Piecewise cubic Hermite interpolation)

说明：  灰色预测模型，对未来数据进行预测，同时还有误差检测(GM(1,1),Grey prediction model, which can forecast future data and detect errors at the same time)

说明：  abaqus vumat 子程序入门 UMAT FOR ABAQUS/STANDARD INCORPORATING ELASTIC BEHAVIOUR FOR PLANE STRAIN AND AXI-SYMMETRIC ELEMENTS.(introduction to abaqus vumat subroutine)