Arturo Ortiz Tapia

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Questions related from Arturo Ortiz Tapia

How to properly calculate statistics with data (time series) repeated in the same time stamp?

We have made almost 400 laser experiments where the measurements are done through a photocell, registering voltage variations corresponding to variations in the intensity of the laser beam. When...

03 October 2023 7,568 2 View

Is it possible to solve the 1-D, homogeneous heat equation, with BC that depend both on time and space?

Suppose one has a 1-D, homogeneous heat equation rm*Cp*T_t = -lm*T_xx (with rm being the density of the material, Cp is the heat capacity coefficient; lm is the thermal conductivity of the...

30 June 2020 5,562 29 View

What are the proper Boundary Conditions for the rubber-sheet model to mimic a relativistic embedding diagram?

From some time I have wanted to make an embedding diagram (the partial representation of the space-time curvature under the influence of a gravitational well), and I quote from...

28 June 2013 8,632 0 View

How to implement a recursive function (in time) in COMSOL?

I have a multiphysics problem, where I have a coupled, PDEs, and and one of them needs the viscosity to be updated. The updating formula uses both the concentration of a substance (from the...

21 May 2013 6,721 2 View

Can the Wronskian determine if something is an eigensystem?

Suppose we have a set of functions with their coefficients. The coefficients can be decomposed into two parts, one of them is unknown, and one is known to be a power of a fixed number; the other...

13 December 2012 4,452 2 View