Euler's method…

FDM解常微分方程 问题描述 \[\frac{d^2\phi}{dx^2}=S_{\phi} \tag{1} \] 这是二阶常微分方程(second-order Ordinary Differential Equation, ODE),考虑最简单的情况即\(S=0\),积分后可得\(\phi=c_1x+c_2\),有两个待定系数,因此要求解该方程必须提供两个边界条件(因为方程中不包含时间项,因此无初始条件),例如 \[\phi(x_L)=\phi_L \quad \phi(x_R)=\phi_R…

Over the last seven years more than 200 quantitative finance articles have been written by members of the QuantStart team, prominent quant finance academics, researchers and industry professionals. 在过去七年中,QuantStart一共发表了200多篇量化金融文章,这些文章的作者包括QS团队成员.优秀…

作者:i_dovelemon 日期:2020-04-25 主题:Perlin Noise, Curl Noise, Finite Difference Method 引言 最近在研究流体效果相关的模拟.经过一番调查,发现很多的算法都基于一定的物理原理进行模拟,计算量相对来说都比较高昂.最终寻找到一个基于噪音实现的,可在视觉上模拟流体效果的方法:Curl Noise.题图就是通过 Curl Noise 模拟的流体向量场控制的百万粒子的效果. 背景知识 在讲解什么是 Curl Noise 之前,我们…

http://blogs.mathworks.com/loren/2007/03/01/creating-sparse-finite-element-matrices-in-matlab/ Loren on the Art of MATLAB March 1st, 2007 Creating Sparse Finite-Element Matrices in MATLAB I'm pleased to introduce Tim Davis as this week's guest blogge…

The author has a course on web: http://brickisland.net/DDGSpring2016/ It has more reading assignments and sliders which are good for you to understand ddg. ------------------------------------------------------------- DISCRETE DIFFERENTIAL GEOMETRY :…

-------------------------------------------------------------- Chapter 1: Introduction to Discrete Differential Geometry: The Geometry of Plane Curves . A better approximation than the tangent is the circle of curvature. . If the curve is sufficientl…

Computer Graphics Research Software Helping you avoid re-inventing the wheel since 2009! Last updated December 5, 2012.Try searching this page for keywords like 'segmentation' or 'PLY'.If you would like to contribute links, please e-mail them to rms@…

链接 There are several resources. But it depends on what you actually want to learn...Let me explain: First of all, There are many Numerical Modeling Techniques in Electromagnetic, and people are always confused about which one to choose. But if you ar…

Research Code A rational methodology for lossy compression - REWIC is a software-based implementation of a a rational system for progressive transmission which, in absence of a priori knowledge about regions of interest, choose at any truncation time…