Tootfinder

Since St George was born in Turkey, died in Palestine and never set foot on Britain I find all of his flags going up around the UK a bit strange but am fine with it really. A nice international symbol of unity with all the other countries with him as their patron saint (Aragon, Catalonia, Georgia, Lithuania, Palestine, Portugal, Germany, Greece, Moscow, Istanbul, Genoa and Venice).
My worry is that in a year there will be really tatty flags everywhere, filling the air with microplastic…

Optimal smoothing parameter in Eilers-Wittaker smoother
Roberto Bernal-Arencibia, Karel Garcia Medina, Ernesto Estevez-Rams, Beatriz Aragon-Fernandez
https://arxiv.org/abs/2510.01798

Optimal smoothing parameter in Eilers-Wittaker smoother
The Eilers-Whittaker method for data smoothing effectiveness depends on the choice of the regularisation parameter, and automatic selection is a necessity for large datasets. Common methods, such as leave-one-out cross-validation, can perform poorly when serially correlated noise is present. We propose a novel procedure for selecting the control parameter based on the spectral entropy of the residuals. We define an S-curve from the Euclidean distance between points in a plot of the spectral ent…

A semi-analytical approach to characterize high-frequency three-dimensional wave propagation through clamp-on flowmeters
Sabiju Valiya Valappil, Alejandro M. Aragon, Johannes F. L. Goosen
https://arxiv.org/abs/2509.00020

A semi-analytical approach to characterize high-frequency three-dimensional wave propagation through clamp-on flowmeters
Wave propagation analysis at high frequencies is essential for applications involving ultrasound waves, such as clamp-on ultrasonic flowmeters. However, it is extremely challenging to perform a 3D transient analysis of a clamp-on flowmeter using standard tools such as finite element analysis (FEA) due to the enormous associated computational cost. In this study, we separate the clamp-on flowmeter into different domains and analyze them separately. Wave propagation in the fluid domain is analyze…

Crosslisted article(s) found for math.NA. https://arxiv.org/list/math.NA/new
[1/1]:
- A semi-analytical approach to characterize high-frequency three-dimensional wave propagation thro...
Sabiju Valiya Valappil, Alejandro M. Aragon, Johannes F. L. Goosen

Crosslisted article(s) found for physics.app-ph. https://arxiv.org/list/physics.app-ph/new
[1/1]:
- Optimal smoothing parameter in Eilers-Wittaker smoother
Roberto Bernal-Arencibia, Karel Garcia Medina, Ernesto Estevez-Rams, Beatriz Aragon-Fernandez