# All Questions

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### Arnoldi Decomposition Algorithm

I try to get into GMRES via Arnoldi-Decomposition. For my understanding, I Implemented the Arnoldi-Decomposition in python. ...
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### Truncation error plot with weird issue

I have a function f(x) = sin(x)/x^3 whose first derivative I am trying to estimate using 1st, 2nd and 4th order Finite Difference schemes. I tried to plot the ...
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### Why am I not getting the flat phase when Fourier-transform a Fourier-limited Gaussian pulse?

I have been trying to obtain a spectrum and a spectral phase of a Gaussian pulse using the Fast Fourier Transform provided with numpy library in Python. Here are ...
60 views

### What are the alternatives for ABAQUS in generating an *.inp file from a CAD model

ABAQUS gives a .inp file (in pre-processing stage) where the information with regard to the preprocessed model is defined, information such as geometry, mesh type, number of elements, boundary ...
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### Magnetic Flux Density Calculation From Predefined Current Density Distribution

I have a model where I can solve for the nodal current density values. What I want to do is to alter this nodal current density information by using MATLAB, then pass this new nodal current density ...
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### Problems with first and second complement

What I know 1=negative,0=positive Example 1. 27-13=14 Example 2. -39+92=53 For example 1. 27 to binary is 11011 13 to binary is 1101 So 1101 change to two complement will ...
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### How to calculate derivative of binary cross entropy?

I'am beginner on neural network topics. I wan to learn how to calculate derivative binary cross entropy loss function. For this, I learn derivative and partial derivative. But it's still to complex ...
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### Unsteady diffusion equation with spatial finite elements and Forward Euler in time

I have solved the unsteady diffusion equation using piece-wise linear Finite elements(triangles) for spatial discretisation and Forward Euler for temporal discretisation. I have the following mesh ...
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### Augmented Dickey Fuller (ADF) test statistics GPU formulation

I have followed different sources of information and achieved the following formulation for the ADF $t$ test statistics. I implemented it to run several hundred thousands of ...