Tootfinder

Non-linear estimators for the observation and stabilisation of falling liquid films
Oscar Holroyd, Radu Cimpeanu, Susana N. Gomes
https://arxiv.org/abs/2506.16987

Non-linear estimators for the observation and stabilisation of falling liquid films
Falling liquid films are complex physical processes modelled by infinite-dimensional dynamical systems. The interfacial behaviour is characterised by the Reynolds number, a nondimensional parameter, and above a critical value the uniform film becomes unstable and travelling waves occur. By injecting and removing fluid from the base at discrete locations, we aim to stabilise otherwise unstable flat interfaces, with the additional limitation that observations of the state are restricted to finite…

Yesterday managed to see at least a half dozen bands for #Kenmore Porchfest (#Buffalo). I only remembered to take one pic (at this RAtM cover band, Anger Is a Gift). They did a great job and the hosts had a cooler of water for everyone.
Kudos to everyone involved in the day.

Ricky Pearsall, 49ers motivated by Brock Purdy's new contract entering 2025 season https://www.nfl.com/news/ricky-pearsall-49ers-motivated-by-brock-purdy-s-new-contract-entering-2025-season

Binary Neutron Star Mergers as Potential Sources for Ultra-High-Energy Cosmic Rays and High-Energy Neutrinos
Gang Guo, Yong-Zhong Qian, Meng-Ru Wu
https://arxiv.org/abs/2506.17581

Binary Neutron Star Mergers as Potential Sources for Ultra-High-Energy Cosmic Rays and High-Energy Neutrinos
Recent studies suggest that the most energetic cosmic rays, exceeding 100 EeV, may primarily consist of $r$-process nuclei. This highlights binary neutron star mergers and collapsars as promising sources of ultra-high-energy cosmic rays (UHECRs). Building on these insights, we examine the conditions that facilitate the efficient production of UHE $r$-process nuclei during the prompt radiation (PR), extended emission (EE), and plateau emission phases of short gamma-ray bursts (sGRBs) following n…

IMEX-RB: a self-adaptive IMEX time integration scheme exploiting the RB method
Micol Bassanini, Simone Deparis, Francesco Sala, Riccardo Tenderini
https://arxiv.org/abs/2506.16470

IMEX-RB: a self-adaptive IMEX time integration scheme exploiting the RB method
In this work, we introduce a self-adaptive implicit-explicit (IMEX) time integration scheme, named IMEX-RB, for the numerical integration of systems of ordinary differential equations (ODEs), arising from spatial discretizations of partial differential equations (PDEs) by finite difference methods. Leveraging the Reduced Basis (RB) method, at each timestep we project the high-fidelity problem onto a suitable low-dimensional subspace and integrate its dynamics implicitly. Following the IMEX para…

On using AI for EEG-based BCI applications: problems, current challenges and future trends
Thomas Barbera, Jacopo Burger, Alessandro D'Amelio, Simone Zini, Simone Bianco, Raffaella Lanzarotti, Paolo Napoletano, Giuseppe Boccignone, Jose Luis Contreras-Vidal
https://arxiv.org/abs/2506.16168

On using AI for EEG-based BCI applications: problems, current challenges and future trends
Imagine unlocking the power of the mind to communicate, create, and even interact with the world around us. Recent breakthroughs in Artificial Intelligence (AI), especially in how machines "see" and "understand" language, are now fueling exciting progress in decoding brain signals from scalp electroencephalography (EEG). Prima facie, this opens the door to revolutionary brain-computer interfaces (BCIs) designed for real life, moving beyond traditional uses to envision Brain-to-Speech, Brain-to-…

🚀 Kubernetes Meetup in Nuremberg! 🇩🇪
Join us on June 2nd for an evening of tech talks, networking, and community fun at the next CNCF Meetup!
🎤 Speakers:
🔹 Sarah Julia Kriesch – Docker vs Podman and the Universe
🔹 Philip Laine – Spegel: A Stateless OCI Registry Mirror
📍 Location: Coworking-Space Nürnberg
🕕 18:00: Doors open for networking
🕡 18:30: Talks begin
🔗 Sign up here:

A class of high-beta, large-aspect-ratio quasiaxisymmetric Palumbo-like configurations
Andrew Brown, Wrick Sengupta, Nikita Nikulsin, Amitava Bhattacharjee
https://arxiv.org/abs/2506.17528

A class of high-beta, large-aspect-ratio quasiaxisymmetric Palumbo-like configurations
The space of high-beta, approximately quasiaxisymmetric, large-aspect-ratio stellarator configurations is explored using an inverse coordinate approach and a quadratic polynomial ansatz for the flux function, following the method of Palumbo, extended by Hernandes and Clemente. This approach yields a system of nonlinear ODEs that, when solved, give equilibria exhibiting positive or negative triangularity, cusps, and (in an extreme limit) current singularities. It is shown that a cubic ansatz may…

Mixed phases in a Fermi--Hubbard model describing altermagnetism
E. Langmann, J. Lenells
https://arxiv.org/abs/2506.16503 https://arx…

Mixed phases in a Fermi--Hubbard model describing altermagnetism
We study an extension of the 2D Fermi--Hubbard model, which was recently introduced in [Das et al., Phys. Rev. Lett. 132, 263402 (2024)] and shown to describe altermagnetism that can be studied in cold atom systems. Using an updated Hartree--Fock method that can detect instabilities towards phase separation, we show that the model is in a mixed phase in large parts of the parameter regime at half-filling. We argue that the occurrence of a mixed phase is an indication of exotic physics which, in…

Orlando Brown expects more from 'special' Bengals offense after Ja'Marr Chase, Tee Higgins deals https://www.nfl.com/news/orlando-brown-expecting-more-from-special-bengals-offense-following-ja-…