Tootfinder

Tuning Shear Rheology through Active Dopants
Amir Shee, Ritwik Bandyopadhyay, Haicen Yue
https://arxiv.org/abs/2506.05262 https://arx…

Tuning Shear Rheology through Active Dopants
We numerically investigate the shear rheology of mixtures of active and passive Brownian particles, with varying fractions of active components. We find that even a small fraction of active dopants triggers fluidization with comparable efficiency to fully active systems. A combined parameter, active energy, given by dopant fraction multiplied by propulsion speed squared controls the shear rheology and glass transition of the active-passive mixtures. These results together provide a quantitative…

Face to face with solar telescopes, meteorites and exoplanets: For the 6th Night of Science on June 21st 2025 in Göttingen, the MPI for Solar System Research is offering a full program of hands-on activities, lectures, guided tours, and unique exhibits.
Infos by MPS: https://www.mps.mpg.de/night-of-science-20

Accelerated Ostwald ripening by chemical activity
Benjamin Sorkin, Ned S. Wingreen
https://arxiv.org/abs/2506.04493 https://arxiv.org…

Accelerated Ostwald ripening by chemical activity
Phase separation of biomolecular condensates is ubiquitous in living cells, promoting colocalization of enzymes and their substrates as well as achieving membrane-free compartmentalization. Energy-consuming processes are routinely used to regulate biocondensate growth by opposing the thermodynamic tendency toward coarsening. At the same time, cells often use energy to instead accelerate thermodynamic processes. Here, we theoretically explore the possibility of utilizing chemical reactions to ac…

GARG-AML against Smurfing: A Scalable and Interpretable Graph-Based Framework for Anti-Money Laundering
Bruno Deprez, Bart Baesens, Tim Verdonck, Wouter Verbeke
https://arxiv.org/abs/2506.04292

GARG-AML against Smurfing: A Scalable and Interpretable Graph-Based Framework for Anti-Money Laundering
Money laundering poses a significant challenge as it is estimated to account for 2%-5% of the global GDP. This has compelled regulators to impose stringent controls on financial institutions. One prominent laundering method for evading these controls, called smurfing, involves breaking up large transactions into smaller amounts. Given the complexity of smurfing schemes, which involve multiple transactions distributed among diverse parties, network analytics has become an important anti-money la…

High-energy dynamics of QCD: Theoretical and phenomenological results
Gabriele Gatto
https://arxiv.org/abs/2506.03222 https://arxiv.o…

High-energy dynamics of QCD: Theoretical and phenomenological results
This work investigates the behavior of hadronic matter in the high-energy Regge-Gribov (semi-hard) regime of Quantum Chromodynamics (QCD), accessible through current and future colliders such as the LHC, EIC, and FCC. Central to the analysis is the Balitsky-Fadin-Kuraev-Lipatov (BFKL) formalism, with detailed treatment of the BFKL equation in both leading and next-to-leading logarithmic approximations. A major focus is placed on the computation of real next-to-leading order (NLO) corrections to…

This https://arxiv.org/abs/2505.24492 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

Object Centric Concept Bottlenecks
Developing high-performing, yet interpretable models remains a critical challenge in modern AI. Concept-based models (CBMs) attempt to address this by extracting human-understandable concepts from a global encoding (e.g., image encoding) and then applying a linear classifier on the resulting concept activations, enabling transparent decision-making. However, their reliance on holistic image encodings limits their expressiveness in object-centric real-world settings and thus hinders their abilit…

#NewPaper out: Anne Reichmuth , Kühn I, Schmidt A, Doktor D (2025) Forested Natura 2000 sites under climate change: effects of tree species distribution shifts. Web Ecology 25: 59–89.
We have modelled and analysed the effect of possible tree species distribution shift in Norway spruce (Picea abies), European beech (Fagus sylvatica), and two oak species (Quercus petraea and Quercus robur), considered jointly on forested Natura 2000 sites, an EU-wide conservation area network. The modelling procedure was performed using 3 to 4 bio-climatic variables derived from 26 variables of the EURO-CORDEX Coupled Model Intercomparison Project Phase 5 (CMIP5) climate simulations for the Representative Concentration Pathways (RCPs) 2.6, 4.5, and 8.5 until 2098. Our results reveal a severe decline in Picea within Natura 2000 sites in central Europe and lower elevations and confirm a strong shift towards higher elevations and latitudes. This amounts to an 18 % absolute mean change (−18 % mean loss, 15 % mean gain). Quercus sp. reveal similar results, with 23 % absolute mean change (−23 % loss, 24 % gain) at Natura 2000 sites, whereas Fagus remains stable throughout the model results with 8 % absolute mean change (−7 % loss, 9 % gain). As ecosystems of any type are highly dynamic, climate change can lead to additional severe pressure on statically defined conservation goals and associated management activities.
#biodiversity #ecology #ClimateChange #conservation

Und dann die S3 Buckets. Wir haben ja kürzlich den Storage von pnpde.social auf S3 umgestellt. Unbedarft wie ich in dem Thema noch bin, habe ich die Buckets dafür mit aktivem Object Lock erstellt. Das klang harmlos, aktiviert aber Versionierung und verhindert Löschen von Objekten. Das Resultat sind unendlich wachsende Buckets. Für unsere Zwecke ist das Unfug. Ich bin also jetzt dabei, die alten Buckets in neue ohne Object Lock zu überführen - was ein ziemlich aufwendiges Gedöns ist 😬

This https://arxiv.org/abs/2411.13630 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

Competitive binding of Activator-Repressor in Stochastic Gene Expression
Regulation of gene expression is the consequence of interactions between the promoter of the gene and the transcription factors (TFs). In this paper, we explore the features of a genetic network where the TFs (activators and repressors) bind the promoter in a competitive way. We develop an analytical theory that offers detailed reaction kinetics of the competitive activator-repressor system which could be the powerful tools for extensive study and analysis of the genetic circuit in future resea…

Attention Is Not Always the Answer: Optimizing Voice Activity Detection with Simple Feature Fusion
Kumud Tripathi, Chowdam Venkata Kumar, Pankaj Wasnik
https://arxiv.org/abs/2506.01365

Attention Is Not Always the Answer: Optimizing Voice Activity Detection with Simple Feature Fusion
Voice Activity Detection (VAD) plays a key role in speech processing, often utilizing hand-crafted or neural features. This study examines the effectiveness of Mel-Frequency Cepstral Coefficients (MFCCs) and pre-trained model (PTM) features, including wav2vec 2.0, HuBERT, WavLM, UniSpeech, MMS, and Whisper. We propose FusionVAD, a unified framework that combines both feature types using three fusion strategies: concatenation, addition, and cross-attention (CA). Experimental results reveal that …