Tootfinder

Re-upping this magnificent image from @…:
“egomaniacs standing on each others shoulders wearing a fascist trench coat, and each is trying to be the head” https://mas.to/@FantasticalEconomics/114628527538664417

"Es ist höchste Zeit, dass sich deutsche Wissenschaftsinstitutionen nicht nur mit Solidaritätsbekundungen an die USA wenden, sondern sich auch gegen die wachsende Bedrohung für Wissenschaft und Demokratie in Deutschland positionieren."
"Überpolitisierung im Namen der Depolitisierung ist das Programm, mit dem die Wissenschaft nach rechtsextremer Façon umgeformt wird."
Andreas #FischerLescano

Wer die Wissenschaft schützen will, muss die AfD verbieten
Die Angriffe auf Universitäten in den USA sind ein Warnsignal. Während deutsche Forschungsorganisationen noch Solidaritätsbekundungen formulieren, bläst die AfD zu ihrem eigenen Feldzug gegen die freie Wissenschaft. Zeit zum Handeln. Ein Gastbeitrag von Andreas Fischer-Lescano.

A Standing-Wave Model for the Low-Frequency Dynamics of a Turbulent Separation Bubble
Lukas M. Fuchs, Ben Steinfurth, Jakob G. R. von Saldern, Julien Weiss, Kilian Oberleithner
https://arxiv.org/abs/2505.24723

A Standing-Wave Model for the Low-Frequency Dynamics of a Turbulent Separation Bubble
This study investigates the low-frequency dynamics of a turbulent separation bubble (TSB) forming over a backward-facing ramp, with a focus on very-large-scale coherent structures associated with the so-called 'breathing motion'. Using time-resolved particle image velocimetry (PIV) in both streamwise and spanwise planes, we examine the role of sidewall confinement, an aspect largely overlooked in previous research. Spectral proper orthogonal decomposition (SPOD) of the streamwise velocity field…

This https://arxiv.org/abs/2502.01607 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Formation and evolution of turbulence in convectively unstable internal solitary waves of depression shoaling over gentle slopes in the South China Sea
The shoaling of high-amplitude Internal Solitary Waves (ISWs) of depression in the South China Sea (SCS) is examined through large-scale parallel turbulence-resolving high-accuracy/resolution simulations. A select, near-isobath-normal, bathymetric transect of the gentle SCS continental slope is employed together with stratification and current profiles obtained by in-situ measurements. Three simulations of separate ISWs with initial deep-water amplitudes in the range [136m, 150m] leverage a nov…

This https://arxiv.org/abs/2405.14157 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Contractive representations of odometer semigroup
Given a natural number $n \geq 1$, the odometer semigroup $O_n$, also known as the adding machine or the Baumslag-Solitar monoid with two generators, is a well-known object in group theory. This paper examines the odometer semigroup in relation to representations of bounded linear operators. We focus on noncommutative operators and prove that contractive representations of $O_n$ always admit to nicer representations of $O_n$. We give a complete description of representations of $O_n$ on the Foc…

Bought a couple breadboard power supplies from Canaduino awhile back. Noticed one on a friends bench and after examining it decided I needed one too. Better than the ones with linear chips. If this fails it just stops working does not send whatever source voltage was to your project. Took awhile to get. They used a shipper called Sendle to ship it from Canada to the U.S.
Anyway I looked around and ordered one of these to to send to the niece.

Electronic Education DIY Kit “The broken code lock” (Troubleshooting Project)
A DIY soldering kit with “integrated” design flaws. Understand the working principle, find the mistakes on the PCB and in the schematics, and make it work.

Bought a couple breadboard power supplies from Canaduino awhile back. Noticed one on a friends bench and after examining it decided I needed one too. Better than the ones with linear chips. If this fails it just stops working does not send whatever source voltage was to your project. Took awhile to get. They used a shipper called Sendle to ship it from Canada to the U.S.
Anyway I looked around and ordered one of these to to send to the niece.

Electronic Education DIY Kit “The broken code lock” (Troubleshooting Project)
A DIY soldering kit with “integrated” design flaws. Understand the working principle, find the mistakes on the PCB and in the schematics, and make it work.