Tootfinder

🇺🇦 #NowPlaying on BBCRadio3's #ClassicalLive
Trad., Tom Poster, Elena Urioste, Savitri Grier, Rosalind Ventris, Laura van der Heijden, Benjamin Britten, Allan Clayton & Kaleidoscope Chamber Collective:
🎵 Three folksongs (Sally in our Alley; There's None to Soothe; The Crocodile)

On K-stability of one-nodal prime Fano threefolds of genus $12$
Elena Denisova, Anne-Sophie Kaloghiros
https://arxiv.org/abs/2506.17649 https://

On K-stability of one-nodal prime Fano threefolds of genus $12$
We show that general one-nodal prime Fano threefolds of genus $12$ are K-polystable.

The California Report on Frontier AI Policy
Rishi Bommasani, Scott R. Singer, Ruth E. Appel, Sarah Cen, A. Feder Cooper, Elena Cryst, Lindsey A. Gailmard, Ian Klaus, Meredith M. Lee, Inioluwa Deborah Raji, Anka Reuel, Drew Spence, Alexander Wan, Angelina Wang, Daniel Zhang, Daniel E. Ho, Percy Liang, Dawn Song, Joseph E. Gonzalez, Jonathan Zittrain, Jennifer Tour Chayes, Mariano-Florentino Cuellar, Li Fei-Fei

The California Report on Frontier AI Policy
The innovations emerging at the frontier of artificial intelligence (AI) are poised to create historic opportunities for humanity but also raise complex policy challenges. Continued progress in frontier AI carries the potential for profound advances in scientific discovery, economic productivity, and broader social well-being. As the epicenter of global AI innovation, California has a unique opportunity to continue supporting developments in frontier AI while addressing substantial risks that c…

AI-Generated Song Detection via Lyrics Transcripts
Markus Frohmann, Elena V. Epure, Gabriel Meseguer-Brocal, Markus Schedl, Romain Hennequin
https://arxiv.org/abs/2506.18488

AI-Generated Song Detection via Lyrics Transcripts
The recent rise in capabilities of AI-based music generation tools has created an upheaval in the music industry, necessitating the creation of accurate methods to detect such AI-generated content. This can be done using audio-based detectors; however, it has been shown that they struggle to generalize to unseen generators or when the audio is perturbed. Furthermore, recent work used accurate and cleanly formatted lyrics sourced from a lyrics provider database to detect AI-generated music. Howe…

Cosmic-ray and Interstellar Gas Properties in the Solar Neighborhood Revealed by Diffuse Gamma Rays
Tsunefumi Mizuno, Katsuhiro Hayashi, Hinako Ochi, Igor V. Moskalenko, Elena Orlando, Andrew W. Strong
https://arxiv.org/abs/2506.16252

Cosmic-ray and Interstellar Gas Properties in the Solar Neighborhood Revealed by Diffuse Gamma Rays
To investigate the interstellar medium (ISM) and Galactic cosmic rays (CRs) in the solar neighborhood, we analyzed $γ$-ray data by Fermi Large Area Telescope (LAT) for five nearby molecular cloud regions. Our data includes the MBM/Pegasus region (MBM~53, 54, 55 clouds and Pegasus loop), R CrA region (R Coronae Australis clouds), Chamaeleon region (Chamaeleon clouds), Cep/Pol region (Cepheus and Polaris flare), and Orion region (Orion clouds). The ISM templates are constructed by a component de…

Feasibility study of a mission to Sedna -- Nuclear propulsion and advanced solar sailing concepts
Elena Ancona, Roman Ya. Kezerashvili, Savino Longo
https://arxiv.org/abs/2506.17732

Feasibility study of a mission to Sedna -- Nuclear propulsion and advanced solar sailing concepts
Exploring the outer reaches of the Solar System presents significant propulsion and mission design challenges. This study assesses the feasibility of a mission to Sedna using two advanced propulsion concepts: the Direct Fusion Drive (DFD) rocket engine, based on D-$^{3}$He thermonuclear fusion, and a solar sail utilizing thermal desorption of its coating for propulsion. Both are evaluated for a one-way Earth-to-Sedna mission; however, due to the different performances the DFD would enable orbit…

Honored to be mentioned in the credits 🙇‍♂️ https://aseachange.com/@elena/statuses/01JXCDST00FXKN9KCAQJ1QCMRJ

How the spin-phase variability of cyclotron lines shapes the pulsed fraction spectra: insights from 4U 1538-52
Dimitrios K. Maniadakis, Ekaterina Sokolova-Lapa, Antonino D'A\`i, Elena Ambrosi, Carlo Ferrigno, Giancarlo Cusumano, Alessio Anitra, Luciano Burderi, Melania Del Santo, Tiziana Di Salvo, Felix F\"urst, Rosario Iaria, Valentina La Parola, Christian Malacaria, Peter Kretschmar, Fabio Pintore, Ciro Pinto, Guillermo Andres Rodriguez Castillo

How the spin-phase variability of cyclotron lines shapes the pulsed fraction spectra: insights from 4U 1538-52
We study the energy-dependent pulse profile of 4U 1538-52 and its phase-dependent spectral variability, with emphasis on the behavior around the cyclotron resonant scattering feature at around 21 keV. We analyze all available NuSTAR observations of 4U 1538-52. We decompose energy-resolved pulse profiles into Fourier harmonics to study their energy dependence. Specifically, we compute pulsed fraction spectra, cross-correlation and lag spectra, identifying discontinuities and linking them to feat…

Italian filmmaker @_elena and her friends have made an OUTSTANDING short film, which explains why people should quit the fascist social networks and join us in the fediverse.
Watch, and share the link everywhere
https://www.youtube.com/watch?v=YRJHIJy5Nno

Typical #Mastodon (Fediverse?) moment:

• a supportive video on the #Fediverse is referenced in a post. In this case the video is on YouTube...
• one person in the comments saying that the video should really be on PeerTube instead
• @…

👉 Ihr könnt euch noch für die nächste Veranstaltung der Reihe "Social-Media-Daten: Show & Tell - Rechtsextremismus- und Demokratieforschung (3)" anmelden!
📅 Das Event findet diesen Freitag, 20.06., 14 Uhr statt und wird gestaltet von Prof. Dr. Julia Bee (Bochum), Dr. Elena Pilipets (Siegen) und Stephen Albrecht.
➡️ Registrierungslink:

High-Entropy Skutterudites as Thermoelectrics: Synthesizability and Band Convergence via the Cocktail Effect
Jose J. Plata, Antonio Morales-Altarejos, Elena R. Remesal, Victor Posligua, Antonio M. M\'arquez
https://arxiv.org/abs/2506.15324

High-Entropy Skutterudites as Thermoelectrics: Synthesizability and Band Convergence via the Cocktail Effect
High entropy materials offer a promising avenue for thermoelectric materials discovery, design, and optimization. However, the large chemical spaces that need to be explored hamper their development. In this work, a large family of high-entropy skutterudites is explored as promising thermoelectric materials. Their synthesizability is screened and rationalized using the disordered enthalpy-entropy descriptor through high-throughput density functional theory calculations. In the case of high-entr…

Segregation and cooperation in active colloidal binary mixtures
Laura Alvarez, Elena Ses\'e-Sansa, Demian Levis, Ignacio Pagonabarraga, Lucio Isa
https://arxiv.org/abs/2506.15188

Segregation and cooperation in active colloidal binary mixtures
The complex interactions underlying collective motion in biological systems give rise to emergent behaviours such as flocking, sorting, and cooperative transport. These dynamics often involve species with different motilities coordinating movement to optimize navigation and survival. Synthetic analogues based on active colloids offer a controlled platform to explore such behaviours, yet most experimental realizations remain limited to monodisperse systems or mixtures of passive and active parti…

DNC boots David Hogg and another vice chair from their roles (Elena Schneider/Politico)
https://www.politico.com/news/2025/06/11/hogg-vote-new-election-dnc-00401673
http://www.memeorandum.com/250611/p147#a250611p147

LLMs on support of privacy and security of mobile apps: state of the art and research directions
Tran Thanh Lam Nguyen, Barbara Carminati, Elena Ferrari
https://arxiv.org/abs/2506.11679

LLMs on support of privacy and security of mobile apps: state of the art and research directions
Modern life has witnessed the explosion of mobile devices. However, besides the valuable features that bring convenience to end users, security and privacy risks still threaten users of mobile apps. The increasing sophistication of these threats in recent years has underscored the need for more advanced and efficient detection approaches. In this chapter, we explore the application of Large Language Models (LLMs) to identify security risks and privacy violations and mitigate them for the mobile…

The Mineralogical Connection Between M- and K-type Asteroids as Indicated by Polarimetry
Joseph R. Masiero, Yuna G. Kwon, Elena Selmi, Manaswi Kondapally
https://arxiv.org/abs/2506.14210

The Mineralogical Connection Between M- and K-type Asteroids as Indicated by Polarimetry
Polarimetry has the capacity to provide a unique probe of the surface properties of asteroids. Trends in polarization behavior as a function of wavelength trace asteroid regolith mineral properties that are difficult to probe without measurements in situ or on returned samples. We present recent results from our ongoing survey of near-infrared polarimetric properties of asteroids. Our data reveal a mineralogical link between asteroids in the broader M- and K- spectral classes. In particular, M-…

🇺🇦 #NowPlaying on BBCRadio3's #EssentialClassics
Samuel Coleridge-Taylor, Elena Urioste, Chineke! Orchestra & Kevin John Edusei:
🎵 Romance, Op 39
#SamuelColeridgeTaylor #ElenaUrioste #Chineke!Orchestra #KevinJohnEdusei

The spectrum of the Burnside Tambara functor
Maxine Elena Calle, David Chan, David Mehrle, J. D. Quigley, Ben Spitz, Danika Van Niel
https://arxiv.org/abs/2506.10727

The spectrum of the Burnside Tambara functor
We compute the spectrum of prime ideals in the Burnside Tambara functor over an arbitrary finite group.

The bump-on-tail instability excited by energetic electrons in helicon plasma
Shi-Jie Zhang, Dong Jing, Lei Chang, Kai-Jun Fu, Chao Wang, Zi-Chen Kan, Ye Tao, Jing-Jing Ma, Ji-Kai Sun, Ding-Zhou Li, Ilya Zadiriev, Elena Kralkina, Shin-Jae You
https://arxiv.org/abs/2506.13321

The bump-on-tail instability excited by energetic electrons in helicon plasma
This work explores for the first time bump-on-tail (BOT) instability excited by energetic electrons in helicon plasma. The Berk-Breizman model that developed for the wave-particle interaction and resulted instability in magnetic fusion is used. Details of the BOT instability are computed referring to typical helicon discharge conditions. Parameter studies are also conducted to reveal the effects of collisionality and energetic drive, to account for high-pressure and high-power senarios respecti…

Impact of embedded $^{163}$Ho on the performance of the transition-edge sensor microcalorimeters of the HOLMES experiment
Douglas Bennett, Matteo Borghesi, Pietro Campana, Rodolfo Carobene, Giancarlo Ceruti, Matteo De Gerone, Marco Faverzani, Lorenzo Ferrari Barusso, Elena Ferri, Joseph Fowler, Sara Gamba, Flavio Gatti, Andrea Giachero, Marco Gobbo, Danilo Labranca, Roberto Moretti, Angelo Nucciotti, Luca Origo, Stefano Ragazzi, Dan Schmidt, Daniel Swetz, Joel Ullom

Impact of embedded $^{163}$Ho on the performance of the transition-edge sensor microcalorimeters of the HOLMES experiment
We present a detailed investigation of the performance of transition-edge sensor (TES) microcalorimeters with $^{163}$Ho atoms embedded by ion implantation, as part of the HOLMES experiment aimed at neutrino mass determination. The inclusion of $^{163}$Ho atoms introduces an excess heat capacity due to a pronounced Schottky anomaly, which can affect the detector's energy resolution, signal height, and response time. We fabricated TES arrays with varying levels of $^{163}$Ho activity and charact…

Who's in? Household-targeted Government Policies and the Role of Financial Literacy in Market Participation
Maria Elena Filippin
https://arxiv.org/abs/2506.12575

Who's in? Household-targeted Government Policies and the Role of Financial Literacy in Market Participation
This paper examines how household-targeted government policies influence financial market participation conditional on financial literacy, focusing on potential Central Bank Digital Currency (CBDC) adoption. Due to the lack of empirical CBDC data, I use the introduction of retail Treasury bonds in Italy as a proxy to investigate how financial literacy affects households' likelihood to engage with the new instrument. Using the Bank of Italy's Survey on Household Income and Wealth, I explore how …

Movie Facts and Fibs (MF$^2$): A Benchmark for Long Movie Understanding
Emmanouil Zaranis, Ant\'onio Farinhas, Saul Santos, Beatriz Canaverde, Miguel Moura Ramos, Aditya K Surikuchi, Andr\'e Viveiros, Baohao Liao, Elena Bueno-Benito, Nithin Sivakumaran, Pavlo Vasylenko, Shoubin Yu, Sonal Sannigrahi, Wafaa Mohammed, Ben Peters, Danae S\'anchez Villegas, Elias Stengel-Eskin, Giuseppe Attanasio, Jaehong Yoon, Stella Frank, Alessandro Suglia, Chrysoula Zerva, Desmond Elliott, M…

Movie Facts and Fibs (MF$^2$): A Benchmark for Long Movie Understanding
Despite recent progress in vision-language models (VLMs), holistic understanding of long-form video content remains a significant challenge, partly due to limitations in current benchmarks. Many focus on peripheral, ``needle-in-a-haystack'' details, encouraging context-insensitive retrieval over deep comprehension. Others rely on large-scale, semi-automatically generated questions (often produced by language models themselves) that are easier for models to answer but fail to reflect genuine und…

From this year on, ESWC will be under the umbrella of SWSA, the Semantic Web Science Association, to secure financial sustainability for the upcoming years after its previous supporting organisation STI was dissolved in 2023. Basics about the transition are given by Elena Simperl, president of SWSA.
https://swsa.semanticweb.org/

AstroSat/UVIT Study of NGC 663: first detection of Be sdOB systems in a young star cluster
Sneha Nedhath, Sharmila Rani, Annapurni Subramaniam, Elena Pancino
https://arxiv.org/abs/2506.08126

AstroSat/UVIT Study of NGC 663: first detection of Be+sdOB systems in a young star cluster
Context. Be stars are rapidly rotating stars surrounded by a disc; however, the origin of these remains unclear. Mass and angular momentum transfer in close binaries account for the rapid rotation of a major fraction of Be stars, supported by the previous detection of low-mass stripped companions to them. The stripped companions can be helium burning subdwarf OB-type stars (sdOBs), and white dwarfs (WDs). Aims. The main objective of this study is to characterise the identified Be stars in the y…

Correcting for Position Bias in Learning to Rank: A Control Function Approach
Md Aminul Islam, Kathryn Vasilaky, Elena Zheleva
https://arxiv.org/abs/2506.06989

Correcting for Position Bias in Learning to Rank: A Control Function Approach
Implicit feedback data, such as user clicks, is commonly used in learning-to-rank (LTR) systems because it is easy to collect and it often reflects user preferences. However, this data is prone to various biases, and training an LTR system directly on biased data can result in suboptimal ranking performance. One of the most prominent and well-studied biases in implicit feedback data is position bias, which occurs because users are more likely to interact with higher-ranked documents regardless …

Secular Attrition of Classical Bulges by Stellar Bars
Rachel Lee McClure, Tobias G\'eron, Elena D'Onghia, Angus Beane, Aaryan Thusoo, Kathryne J. Daniel, Carrie Filion, Scott Lucchini
https://arxiv.org/abs/2506.09150

Secular Attrition of Classical Bulges by Stellar Bars
Classical bulges and stellar bars are common features in disk galaxies and serve as key tracers of galactic evolution. Angular momentum exchange at bar resonances drives secular morphological changes throughout the disk, including bar slowing and lengthening, and affects the structure of accompanying bulges. In this study, using a suite of N-body simulations, we quantify the secular reconfiguration of classical bulges through resonant trapping by evolving stellar bars. We use orbital frequency …

Primitive quantales
Amartya Goswami, Elena Caviglia, Luca Mesiti
https://arxiv.org/abs/2506.08124 https://arxiv.org/pdf/2506.08124

Primitive quantales
We generalize Jacobson's notion of primitive ring to the setting of quantales. We show that every primitive ring gives rise to a primitive quantale of ideals. We then prove a density theorem for strongly primitive quantales. Furthermore, we show that primitive quantales are prime and commutative strongly primitive quantales are field quantales.

Fine-Grained Spatially Varying Material Selection in Images
Julia Guerrero-Viu, Michael Fischer, Iliyan Georgiev, Elena Garces, Diego Gutierrez, Belen Masia, Valentin Deschaintre
https://arxiv.org/abs/2506.09023

Fine-Grained Spatially Varying Material Selection in Images
Selection is the first step in many image editing processes, enabling faster and simpler modifications of all pixels sharing a common modality. In this work, we present a method for material selection in images, robust to lighting and reflectance variations, which can be used for downstream editing tasks. We rely on vision transformer (ViT) models and leverage their features for selection, proposing a multi-resolution processing strategy that yields finer and more stable selection results than …

Private Memorization Editing: Turning Memorization into a Defense to Strengthen Data Privacy in Large Language Models
Elena Sofia Ruzzetti, Giancarlo A. Xompero, Davide Venditti, Fabio Massimo Zanzotto
https://arxiv.org/abs/2506.10024

Private Memorization Editing: Turning Memorization into a Defense to Strengthen Data Privacy in Large Language Models
Large Language Models (LLMs) memorize, and thus, among huge amounts of uncontrolled data, may memorize Personally Identifiable Information (PII), which should not be stored and, consequently, not leaked. In this paper, we introduce Private Memorization Editing (PME), an approach for preventing private data leakage that turns an apparent limitation, that is, the LLMs' memorization ability, into a powerful privacy defense strategy. While attacks against LLMs have been performed exploiting previou…

A Grammatical Calculus for the Ramanujan Polynomials
William Y. C. Chen, Amy M. Fu, Elena L. Wang
https://arxiv.org/abs/2506.01649 https://

A Grammatical Calculus for the Ramanujan Polynomials
As remarked by Berndt, no combinatorial perspective seems to be alluded in the original definition of the Ramanujan polynomials. On a different scene, a recursive algorithm to generate rooted trees has been devised independently by Shor and Dumont-Ramamonjisoa. Zeng discovered the connection between the Ramanujan polynomials and the enumeration of rooted trees by number of improper edges. We present a proper labeling scheme for rooted trees by employing an extra label. H…

A causal evaluation of Bogota's cable car illustrates the transformative potential of mobile phone data for policy analysis
Elena Lutz, Sam Heroy, David Kaufmann, Neave O'Clery
https://arxiv.org/abs/2506.09311

A causal evaluation of Bogota's cable car illustrates the transformative potential of mobile phone data for policy analysis
Transport infrastructure is vital to the functioning of cities. However, assessing the impact of transport policies on urban mobility and behaviour is often costly and time-consuming, particularly in low-data environments. We demonstrate how GPS location data derived from smartphones, available at high spatial granularity and in near real time, can be used to conduct causal impact evaluation, capturing broad mobility and interaction patterns beyond the scope of traditional sources such as surve…

Conservation Laws and Boundedness for Linearised Einstein--Maxwell Equations on the Reissner--Nordstr\"om Black Hole
Marios A. Apetroaie, Sam C. Collingbourne, Elena Giorgi
https://arxiv.org/abs/2506.04812

Conservation Laws and Boundedness for Linearised Einstein--Maxwell Equations on the Reissner--Nordström Black Hole
We study the linearised Einstein--Maxwell equations on the Reissner--Nordström spacetime and derive the canonical energy conservation law in double null gauge. In the spirit of the work of Holzegel and the second author, we avoid any use of the hyperbolic nature of the Teukolsky equations and rely solely on the conservation law to establish control of energy fluxes for the gauge-invariant Teukolsky variables, previously identified by the third author, along all outgoing null hypersurfaces, for…

Diffusive Spreading Across Dynamic Mitochondrial Network Architectures
Keaton B. Holt, Lizzy Teryoshin, Elena F. Koslover
https://arxiv.org/abs/2506.05643 …

Diffusive Spreading Across Dynamic Mitochondrial Network Architectures
Networks of physical units can vary from a stationary set of spatially-embedded links to a collection of mobile agents that undergo transient social interactions. In living cells, mitochondria form architectures that span across these regimes, transitioning between fragmented, partly connected, and highly fused structures depending on cell type and state. Diffusive transport of biomolecular components through these networks helps to homogenize the mitochondrial population. Here we address the c…

Homogenization of non-symmetric convolution type operators
Andrey Piatnitski, Vladimir Sloushch, Tatiana Suslina, Elena Zhizhina
https://arxiv.org/abs/2506.07176

Homogenization of non-symmetric convolution type operators
The paper studies homogenization problem for a bounded in $L_2(\mathbb R^d)$ convolution type operator ${\mathbb A}_\eps$, $\eps >0$, of the form $$ ({\mathbb A}_\eps u) (\x) = \eps^{-d-2} \int_{\R^d} a((\x-\y)/\eps) μ(\x/\eps, \y/\eps) \left( u(\x) - u(\y) \right)\,d\y. $$ It is assumed that $a(\x)$ is a non-negative function from $L_1(\R^d)$, and $μ(\x,\y)$ is a periodic in $\x$ and $\y$ function such that $0< μ_- \leqslant μ(\x,\y) \leqslant μ_+< \infty$. No symmetry assumption on $a(\c…

Dems are quietly forming a think tank to help them win again (Elena Schneider/Politico)
https://www.politico.com/news/2025/06/03/dems-are-quietly-forming-a-think-tank-to-help-them-win-again-00381601
http://www.memeorandum.com/250603/p38#a250603p38

Enhanced zeta potentials caused by surface ion mobilities
Evgeny S. Asmolov, Elena F. Silkina, Olga I. Vinogradova
https://arxiv.org/abs/2506.02915 https:/…

Enhanced zeta potentials caused by surface ion mobilities
The electro-hydrodynamics near conducting walls is revisited. Attention is focused on the impact of an explicit diffuse Stern layer, which permittivity and viscosity differ from the bulk values, on the velocity of an electro-osmotic plug flow. To solve this problem we propose an approach of mapping the flow in the Stern layer to the surface dividing the Stern and diffuse layer, where an effective electro-hydrodynamic slip boundary condition is imposed. The latter implies that an effective surfa…

Traveling waves for a two-phase Stefan problem with radiation
Elena Dematt\`e, Juan J. L. Vel\'azquez
https://arxiv.org/abs/2506.01821 https://

Traveling waves for a two-phase Stefan problem with radiation
In this paper we study the existence of traveling wave solutions for a free-boundary problem modeling the phase transition of a material where the heat is transported by both conduction and radiation. Specifically, we consider a one-dimensional two-phase Stefan problem with an additional non-local non-linear integral term describing the situation in which the heat is transferred in the solid phase also by radiation, while the liquid phase is completely transparent, not interacting with radiatio…

On general and complete multidimensional Riemann solvers for nonlinear systems of hyperbolic conservation laws
Elena Gaburro, Mario Ricchiuto, Michael Dumbser
https://arxiv.org/abs/2506.00207

On general and complete multidimensional Riemann solvers for nonlinear systems of hyperbolic conservation laws
In this work, we introduce a framework to design multidimensional Riemann solvers for nonlinear systems of hyperbolic conservation laws on general unstructured polygonal Voronoi-like tessellations. In this framework we propose two simple but complete solvers. The first method is a direct extension of the Osher-Solomon Riemann solver to multiple space dimensions. Here, the multidimensional numerical dissipation is obtained by integrating the absolute value of the flux Jacobians over a dual trian…

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist-Planar Oriented Liquid Crystal Fresnel Lens
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky
https://arxiv.org/abs/2506.02632

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist-Planar Oriented Liquid Crystal Fresnel Lens
Optical vortices (OVs) have emerged as a revolutionary concept in modern photonics, offering a unique method of manipulating light beyond conventional Gaussian beams. Despite their vast potential, phase topology stability remains unaddressed, limiting their widespread adoption and performance in real-world environments. Here, we reveal the missing link to assessing the stability of optical vortices using an electrically tunable twist-planar liquid crystal (LC) Fresnel lens. The proposed LC-base…

Spatial and temporal evolutions of blue-core helicon discharge driven by planar antenna with concentric rings
Chao Wang, Lei Chang, Ling-Feng Lu, Shunjiro Shinohara, Zhi-De Zeng, Ilya Zadiriev, Elena Kralkina, Zhi Li, Shi-Jie Zhang, Zi-Chen Kan, Ye Tao, Ding-Zhou Li
https://arxiv.org/abs/2506.10493…

Spatial and temporal evolutions of blue-core helicon discharge driven by planar antenna with concentric rings
The spatial and temporal evolutions of blue-core helicon discharge driven by a planar antenna with four concentric rings are explored on the Linear Experimental Advanced Device (LEAD). The discharge experiences distinct density jumps from E mode to H mode, W mode, and blue-core mode, when RF input power increases. This is similar to previous observations using other typical helicon antennas; however, this special antenna could drive modes of even higher levels for which the blue-core plasma col…

Why M-dwarf flares have limited impact on sub-Neptunes' atmospheric evaporation
Andrea Caldiroli, Francesco Haardt, Elena Gallo, George King, Juliette Becker, Federico Biassoni, Riccardo Spinelli
https://arxiv.org/abs/2506.08014

Why M-dwarf flares have limited impact on sub-Neptunes' atmospheric evaporation
M-type stars are prime targets for exoplanet searches within their habitable zones (HZs). M-type stars also exhibit significant magnetic flaring activity, especially during the first billion years, which can potentially accelerate the evaporation of the hydrogen-helium envelopes of close-in planets. We use the time-dependent photo-ionization hydrodynamics code ATES to investigate the impact of flares on atmospheric escape, focusing on a sub-Neptune-sized planet orbiting an early M-type star at …

The ${}^9$Be photodisintegration cross section within Cluster Effective Field Theory
Ylenia Capitani, Elena Filandri, Chen Ji, Winfried Leidemann, Giuseppina Orlandini
https://arxiv.org/abs/2506.05040

The ${}^9$Be photodisintegration cross section within Cluster Effective Field Theory
A low-energy calculation of ${}^9$Be photodisintegration cross section is presented within an $ααn$ cluster approach. The $αn$ and $αα$ contact interactions are derived from cluster effective field theory. The two-body potentials defined in momentum space are regularized by a Gaussian cutoff. The associated low-energy constants are found by comparing the calculated low-energy T-matrix with its effective range expansion. A three-body state-dependent potential is also introduced in the model…

X-ray linear polarization prediction in Black-Hole binaries and Active Galactic Nuclei and its measurements by IXPE
Lev Titarchuk, Paolo Soffitta, Elena Seifina, Fabio Muleri, Romana Mikusincova
https://arxiv.org/abs/2506.09571

X-ray linear polarization prediction in Black-Hole binaries and Active Galactic Nuclei and its measurements by IXPE
We present a theoretical framework for the formation of X-ray linear polarization in black hole (BH) source. The X-ray linear polarization originates from up-scatterings of initially soft photons within a hot, optically thick Compton cloud (CC) characterized by a flat geometry. The IXPE observations of several BHs X-ray binaries and of one Seyfert-1 galaxy confirm our theoretical prediction regarding values of the linear polarization P. The goal of this paper is to demonstrate that the main phy…

Complexity reduction of physical models: an equation-free approach by means of scaling
Simone Rusconi, Christina Schenk, Razvan Ceuca, Arghir Zarnescu, Elena Akhmatskaya
https://arxiv.org/abs/2506.05029

Complexity reduction of physical models: an equation-free approach by means of scaling
The description of complex physical phenomena often involves sophisticated models that rely on a large number of parameters, with many dimensions and scales. One practical way to simplify that kind of models is to discard some of the parameters, or terms of underlying equations, thus giving rise to reduced models. Here, we propose a general approach to obtaining such reduced models. The method is independent of the model in use, i.e., equation-free, depends only on the interplay between the sca…

Cubic BeB$_2$: A metastable $p$-type conductive material from first principles
Xiao Zhang, Shashi Mishra, Elena R. Margine, Emmanouil Kioupakis
https://arxiv.org/abs/2506.00769

Cubic BeB$_2$: A metastable $p$-type conductive material from first principles
Boron forms a wide variety of compounds with alkaline earth elements due to its unique bonding characteristics. Among these, binary compounds of Be and B display particularly rich structural diversity, attributed to the small atomic size of Be. Cubic BeB$_2$ is a particularly interesting phase, where Be donates electrons to stabilize a diamond-like boron network under high pressure. In this work, we employ \textit{ab initio} methods to conduct a detailed investigation of cubic BeB$_2$ and its f…

Comparing methods for handling missing data in electronic health records for dynamic risk prediction of central-line associated bloodstream infection
Shan Gao, Elena Albu, Pieter Stijnen, Frank Rademakers, Veerle Cossey, Yves Debaveye, Christel Janssens, Ben Van Calster, Laure Wynants
https://arxiv.org/abs/2506.06707

Comparing methods for handling missing data in electronic health records for dynamic risk prediction of central-line associated bloodstream infection
Electronic health records (EHR) often contain varying levels of missing data. This study compared different imputation strategies to identify the most suitable approach for predicting central line-associated bloodstream infection (CLABSI) in the presence of competing risks using EHR data. We analyzed 30862 catheter episodes at University Hospitals Leuven (2012-2013) to predict 7-day CLABSI risk using a landmark cause-specific supermodel, accounting for competing risks of hospital discharge and …

Well-posedness for a two-phase Stefan problem with radiation
Elena Dematt\`e, Juan J. L. Vel\'azquez
https://arxiv.org/abs/2505.24602 https://

Well-posedness for a two-phase Stefan problem with radiation
In this paper we consider a free boundary problem for the melting of ice where we assume that the heat is transported by conduction in both the liquid and the solid part of the material and also by radiation in the solid. Specifically, we study a one-dimensional two-phase Stefan-like problem which contains a non-local integral operator in the equation describing the temperature distribution of the solid. We will prove the local well-posedness of this free boundary problem combining the Banach f…

Effect of chromatic dispersion on image size and lattice plane curvature measurements with Rocking Curve Imaging
Elena Ferrari, Claudio Ferrari, Jos\`e Baruchel, Thu Ni Tran Caliste, Stefano Basso, Akanshu Chauhan, Bianca Salmaso, Davide Sisana, Daniele Spiga
https://arxiv.org/abs/2506.03787…

Effect of chromatic dispersion on image size and lattice plane curvature measurements with Rocking Curve Imaging
ADP crystals of large dimensions (80x80x20 mm3), to be used as a X-ray beam expanders in the BEaTriX facility at INAF-OABrera, have been characterised at BM05 beamline at ESRF synchrotron with the main purpose to determine lattice plane curvature with a unprecedent accuracy, as the BEaTriX setup requires a radius of curvature larger than 22 km. In this beamline, the monochromator is made by 2 Si(111) parallel crystals in the non-dispersive configuration. Due to the difference in the Bragg angle…

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Marianna Martines, Ilona Domnich, BBC Concert Orchestra & Jane Glover:
🎵 Two arias from 'Sant'Elena al Calvario'
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Many Will Enter, Few Will Win: Cost and Sensitivity of Exploratory Dynamics
Elena F Koslover, Milo M Lin, Rob Phillips
https://arxiv.org/abs/2506.00775 htt…

Many Will Enter, Few Will Win: Cost and Sensitivity of Exploratory Dynamics
A variety of biomolecular systems rely on exploratory dynamics to reach target locations or states within a cell. Without a mechanism to remotely sense and direct motion towards a target, the system must sample over many paths, often including resetting transitions back to the origin. We explore how exploratory dynamics can confer an important functional benefit: the ability to respond to small changes in parameters with large shifts in the steady-state behavior. However, such enhanced sensitiv…

Joint Data Hiding and Partial Encryption of Compressive Sensed Streams
Cristina-Elena Popa, Cristian Damian, Daniela Coltuc
https://arxiv.org/abs/2505.23357

Joint Data Hiding and Partial Encryption of Compressive Sensed Streams
The paper proposes a method to secure the Compressive Sensing (CS) streams. It consists in protecting part of the measurements by a secret key and inserting the code into the rest. The secret key is generated via a cryptographically secure pseudo-random number generator (CSPRNG) and XORed with the measurements to be inserted. For insertion, we use a reversible data hiding (RDH) scheme, which is a prediction error expansion algorithm, modified to match the statistics of CS measurements. The reco…

Adaptive tuning of Hamiltonian Monte Carlo methods
Elena Akhmatskaya, Lorenzo Nagar, Jose Antonio Carrillo, Leonardo Gavira Balmacz, Hristo Inouzhe, Mart\'in Parga Pazos, Mar\'ia Xos\'e Rodr\'iguez \'Alvarez
https://arxiv.org/abs/2506.04082

Adaptive tuning of Hamiltonian Monte Carlo methods
With the recently increased interest in probabilistic models, the efficiency of an underlying sampler becomes a crucial consideration. A Hamiltonian Monte Carlo (HMC) sampler is one popular option for models of this kind. Performance of HMC, however, strongly relies on a choice of parameters associated with an integration method for Hamiltonian equations, which up to date remains mainly heuristic or introduce time complexity. We propose a novel computationally inexpensive and flexible approach …

Climate impacts and monetary costs of healthy diets worldwide
Yan Bai, Elena M. Martinez, Mizuki Yamanaka, Marko Rissanen, Anna Herforth, William A. Masters
https://arxiv.org/abs/2505.24457

Climate impacts and monetary costs of healthy diets worldwide
About 2.8 billion people worldwide cannot afford the least expensive foods required for a healthy diet. Since 2020, the Cost and Affordability of a Healthy Diet (CoAHD) has been published for all countries by FAO and the World Bank and is widely used to guide social protection, agricultural, and public health and nutrition policies. Here, we measure how healthy diets could be obtained with the lowest possible greenhouse gas (GHG) emissions, in ways that could further inform food choice and poli…

Homogenization of parabolic problems for non-local convolution type operators under non-diffusive scaling of coefficients
Andrey Piatnitski, Elena Zhizhina
https://arxiv.org/abs/2506.00872

Homogenization of parabolic problems for non-local convolution type operators under non-diffusive scaling of coefficients
We study homogenization problem for non-autonomous parabolic equations of the form $\partial_t u=L(t)u$ with an integral convolution type operator $L(t)$ that has a non-symmetric jump kernel which is periodic in spatial variables and in time. It is assumed that the space-time scaling of the environment is not diffusive. We show that asymptotically the spatial and temporal evolutions of the solutions are getting decoupled, and the homogenization result holds in a moving frame.

Impact of triangularity on edge transport and divertor detachment: a SOLPS-ITER study of TCV L-mode plasmas
Fabio Mombelli, Andrea Mastrogirolamo, Elena Tonello, Olivier F\'evrier, Garance Durr-Legoupil-Nicoud, Massimo Carpita, Fabio Subba, Matteo Passoni, the TCV team, the EUROfusion Tokamak Exploitation Team
https://arxiv.…

Impact of triangularity on edge transport and divertor detachment: a SOLPS-ITER study of TCV L-mode plasmas
Negative triangularity (NT) magnetic configurations have recently gained attention as a promising route to achieve H-mode-like confinement without edge-localized modes (ELMs) and without a power threshold for access. While both core and edge confinement properties of NT have been extensively documented, consistently lower divertor target cooling and increased difficulty in achieving a detached regime have been observed. This work presents a comparative SOLPS-ITER modeling study of two Ohmic L-m…

Gone with the Wind: JWST-MIRI Unveils a Strong Outflow from the Quiescent Stellar-Mass Black Hole A0620-00
Zihao Zuo, Gabriele Cugno, Joseph Michail, Elena Gallo, David M. Russell, Richard M. Plotkin, Fan Zou, M. Cristina Baglio, Piergiorgio Casella, Fraser J. Cowie, Rob Fender, Poshak Gandhi, Sera Markoff, Federico Vincentelli, Fraser Lewis, Jon M. Miller, James C. A. Miller-Jones, Alexandra Veledina

Gone with the Wind: JWST-MIRI Unveils a Strong Outflow from the Quiescent Stellar-Mass Black Hole A0620-00
We present new observations of the black hole X-ray binary A0620-00 using the Mid-Infrared Instrument on the James Webb Space Telescope, during a state where the X-ray luminosity is 9 orders of magnitude below Eddington, and coordinated with radio, near-infrared and optical observations. The goal is to understand the nature of the excess mid-infrared (MIR) emission originally detected by Spitzer red-ward of 8 $μ$m. The stellar-subtracted MIR spectrum is well-modeled by a power law with a spect…

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Elena Kats‐Chernin, Jane Sheldon, Tasmanian Symphony Orchestra & Ola Rudner:
🎵 Eliza's Aria (Wild Swans)
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Samuel Coleridge-Taylor, Elena Urioste, Chineke! Orchestra & Kevin John Edusei:
🎵 Romance, Op 39
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Wolfgang Amadeus Mozart, Elena Urioste & Tom Poster:
🎵 Violin Sonata No 22 in A major, K 305 (2nd mvt, 'Theme and Variations')
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Elena Kats‐Chernin, Jane Sheldon, Tasmanian Symphony Orchestra & Ola Rudner:
🎵 Good Fairy (Wild Swans)
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🇺🇦 #NowPlaying on BBCRadio3's #EssentialClassics
Julie Cooper, Elena Urioste, Anna Lapwood & Chapel Choir of Pembroke College, Cambridge:
🎵 Firedove
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Lili Boulanger, Elena Urioste & Tom Poster:
🎵 Introduction and cortege
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Antonín Dvořšk, Elena Urioste & Zhang Zuo:
🎵 4 Romantic pieces Op.75
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