Tootfinder

TIL: es gab in #Berlin insbes. bis Ende WW2 ein beachtliches Rohrpostsystem. Ein Rohrpostamt befand sich z.B. am Brandenburger Tor. Laut einem Beitrag in der BZ vom 19.2.1949 brauchte eine Sendung für 12 km bei siebenmaligem Weiterleiten (von Station zu Station) 32 Minuten.
Wiki-Artikel:

DeepFake Doctor: Diagnosing and Treating Audio-Video Fake Detection
Marcel Klemt, Carlotta Segna, Anna Rohrbach
https://arxiv.org/abs/2506.05851 https://…

DeepFake Doctor: Diagnosing and Treating Audio-Video Fake Detection
Generative AI advances rapidly, allowing the creation of very realistic manipulated video and audio. This progress presents a significant security and ethical threat, as malicious users can exploit DeepFake techniques to spread misinformation. Recent DeepFake detection approaches explore the multimodal (audio-video) threat scenario. In particular, there is a lack of reproducibility and critical issues with existing datasets - such as the recently uncovered silence shortcut in the widely used Fa…

Yesterday I had a very nice bike ride from Wenigzell (where I had my "Gesundheitswoche") to Rohrbach an der Lafnitz. A lot of downhill, and only one major ascent (ca 120hm),

Today I cycled 25km (but 750 elevation difference uphill) from Rohrbach to Wenigzell, where I'll spend the next week on a fitness training program focusing on (against?) back pain, mostly paid for by my health insurance.

This https://arxiv.org/abs/2412.12810 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nli…

Traveling Bubbles and Vortex Pairs within Symmetric 2D Quantum Droplets
We disclose a class of stable nonlinear traveling waves moving at specific constant velocities within symmetric two-dimensional quantum droplets. We present a comprehensive analysis of these traveling bubbles and identify three qualitatively distinct regions within the one-parameter family of solutions, classified by velocity: (i) well-separated phase singularities at low velocity, (ii) singularities within the same density dip at intermediate velocity, and (iii) rarefaction pulses without sing…

This https://arxiv.org/abs/2504.16633 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nli…

Unveiling Solitonic Collisions in Mechanical Metamaterials
Interactions between solitary waves have been pivotal to understanding nonlinear phenomena across various disciplines. The dynamics of rarefaction solitary waves holds great potential, yet their fundamental characteristics and interactions remain only partially understood through experimental means in mechanical metamaterials. Previous studies highlighted their existence and proposed applications, such as waveguides, impact mitigation, and energy harvesting. Challenges, including energy dissipa…