计算力学编程,有限元

背景：在需求工程中，将有许多不同的股权持有人。经常要求

计算弹性模量的小程序，学力学的同学用得上-calculate the elastic modulus of small programs, students learn mechanics useful

灰色模型预测是在数据不呈现一定规律下可以采取的一种建模和预测方法，其预测数据与原始数据存在一定的规律相似性,下面程序是灰色模型GM(1,1)程序二次拟合和等维新陈代谢改进预测程序, 程序能够运行出正确的结果，希望对各位有帮助。

点到线段距离，在进行画图时，在选择线时有重要作用，-Point to a line distance

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简单的讲，所谓拟合是指已知某函数的若干离散函数值{f1,f2,…,fn}，通过调整该函数中若干待定系数f(λ1, λ2,…,λ3), 使得该函数与已知点集的差别(最小二乘意义)最小。如果待定函数是线性，就叫线性拟合或者线性回归(主要在统计中)，否则叫作非线性拟合或者非线性回归。表达式也可以是分段函数，这种情况下叫作样条拟合。-Simply speaking, the so-called fitting refers to a function known to a number of discrete function values (f1, f2, ..., fn), by adjusting the number of undetermined coefficient function f (λ1, λ2, ..., λ3), makes the function and known points of difference (least squares significance) the smallest. To be determined if the function is linear, is called linear regression or linear regression (mainly in the statistics), otherwise known as non-linear fitting, or nonlinear regression. Expressions can also be a sub-function, this case is called spline fitting.

递归转递推的一个例子，用c++实现。-pushed the recursive transmitting an example, using c achieve.

这是基于CTMF改进的快速中值滤波算法，在该算法上进行了优化和改进成C++版本，在PC上可以达到实时的速度，对于去噪，消噪方面有着非常显著的效果。

二次指数平滑预测法和三次指数平滑预测法是普遍的预测方法,应用很广,本代码还包含其平滑系数的确定-quadratic exponential smoothing prediction and three exponential smoothing prediction is a common forecasting methods, a wide application, the code also includes its smooth determine the coefficient

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