Tootfinder

#特に意味をなさない猫の計測

Structural Optimal Jacobian Accumulation and Minimum Edge Count are NP-Complete Under Vertex Elimination
Matthias Bentert, Alex Crane, P{\aa}l Gr{\o}n{\aa}s Drange, Yosuke Mizutani, Blair D. Sullivan
https://arxiv.org/abs/2506.17521

Structural Optimal Jacobian Accumulation and Minimum Edge Count are NP-Complete Under Vertex Elimination
We study graph-theoretic formulations of two fundamental problems in algorithmic differentiation. The first (Structural Optimal Jacobian Accumulation) is that of computing a Jacobian while minimizing multiplications. The second (Minimum Edge Count) is to find a minimum-size computational graph. For both problems, we consider the vertex elimination operation. Our main contribution is to show that both problems are NP-complete, thus resolving longstanding open questions. In contrast to prior work…

AaŠaargh.
https://functional.cafe/@loke/114724782345547751

Detection of pure warm-hot #IntergalacticMedium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy: https://www.aanda.org/articles/aa/full_html/2025/06/aa54944-25/aa54944-25.html -> Astronomers have discovered a huge filament of hot gas bridging four galaxy clusters: https://www.esa.int/Science_Exploration/Space_Science/XMM-Newton/The_models_were_right_astronomers_find_missing_matter - at 10 times as massive as our galaxy, the thread could contain some of the Universe’s ‘missing’ matter, addressing a decades-long mystery.

fly_larva: Drosophila larva brain (2023)
A complete synaptic map of the brain connectome of the larva of the fruit fly Drosophila melanogaster. Nodes are neurons, and edges are synaptic connections, traced individually from brain image sections using three-dimensional electron microscopy–based reconstruction. Node metadata include the neuron hempisphere, hemispherical homologue, cell type, annotations, and inferred cluster. Edge metadata include the type of interaction (`'aa'`,…

Chelation of the mercury ions by polyethyleneimine: Atomistic molecular dynamics study
Halyna Butovych, Jaroslav Ilnytskyi, Erkki Lahderanta, Taras Patsahan
https://arxiv.org/abs/2506.18835

Chelation of the mercury ions by polyethyleneimine: Atomistic molecular dynamics study
Contamination of water by heavy metal ions represents a significant environmental concern. Among various remediation methods, chelation has proven to be an effective technique in water treatment processes. This study investigates the chelating properties of linear polyethyleneimine (PEI) and its complexation with divalent mercury ions (Hg2+) in aqueous solution. Atomistic molecular dynamics (MD) simulations were carried out using the OPLS/AA force field to examine the microscopic structure of P…

Influence of Interlayer Stacking on Optical Behavior in WSe$_{2}$/MoS$_{2}$ van der Waals Heterostructures
Widad Louafi, Karim Rezouali, Daniele Varsano, Maurizia Palummo, Maurits W. Haverkort, Samir Lounis
https://arxiv.org/abs/2506.18607

Influence of Interlayer Stacking on Optical Behavior in WSe$_{2}$/MoS$_{2}$ van der Waals Heterostructures
We investigate the impact of crystal alignment on excitonic behavior in WSe$_{2}$/MoS$_{2}$ van der Waals heterostructures by comparing eclipsed (AA) and staggered (AB) stacking configurations. Our first-principles and symmetry-based analysis reveal that interlayer stacking symmetry plays a central role in determining the nature of electron-hole pairs. We uncover a rich variety of excitonic states, including spatially confined two-dimensional (2D) excitons, delocalized three-dimensional (3D) ex…

Replaced article(s) found for physics.data-an. https://arxiv.org/list/physics.data-an/new
[1/1]:
- Tunable correlation retention: A statistical method for generating synthetic data
Nicklas J\"averg{\aa}rd, Rainey Lyons, Adrian Muntean, Jonas Forsman
…

Deep learning inference with the #EventHorizonTelescope I. Calibration improvements and a comprehensive synthetic data library / II. The ZINGULARITY framework for Bayesian artificial neural networks / III. ZINGULARITY results from the 2017 observations and predictions for future array expansions: https://www.aanda.org/articles/aa/full_html/2025/06/aa53784-25/aa53784-25.html / https://www.aanda.org/articles/aa/full_html/2025/06/aa53785-25/aa53785-25.html / https://www.aanda.org/articles/aa/full_html/2025/06/aa53786-25/aa53786-25.html -> Self-learning neural network cracks iconic black holes: https://www.astronomie.nl/nieuws/en/self-learning-neural-network-cracks-iconic-black-holes-4528

from my link log —
aa-56: an astronomical ephemeris calculator program.
http://www.moshier.net/aadoc.html
saved 2024-05-28 https://

This is the first time I’ve heard of a web #accessibility lawsuit *demanding* an overlay:
https://www.linkedin.com/feed/update/urn:li:activity:734050244680636…

Talked with a site owner this afternoon who has received a subpoena for a website accessibility suit. | Bet Hannon
Talked with a site owner this afternoon who has received a subpoena for a website accessibility suit. Typical serial plaintiff, with dozens of cookie-cutter suits. What isn't typical however, is that the plaintiff's attorney wants to make only putting an overlay widget on the site the only requirement to settle. I've never heard of that before. Almost always the requirement is that the site conform to WCAG 2.1 AA within 12-24 months. Has anyone seen this happening with a defendant before? I t…

AMLgentex: Mobilizing Data-Driven Research to Combat Money Laundering
Johan \"Ostman, Edvin Callisen, Anton Chen, Kristiina Ausmees, Emanuel G{\aa}rdh, Jovan Zamac, Jolanta Goldsteine, Hugo Wefer, Simon Whelan, Markus Reimeg{\aa}rd
https://arxiv.org/abs/2506.13989

AMLgentex: Mobilizing Data-Driven Research to Combat Money Laundering
Money laundering enables organized crime by allowing illicit funds to enter the legitimate economy. Although trillions of dollars are laundered each year, only a small fraction is ever uncovered. This stems from a range of factors, including deliberate evasion by launderers, the rarity of confirmed cases, and the limited visibility each financial institution has into the global transaction network. While several synthetic datasets are available, they fail to model the structural and behavioral …

Goodness, does this mean we can expect a strongly-worded letter next? https://mastodon.social/@EndIsraeliApartheid/114675920702558762

From Flat to Feeling: A Feasibility and Impact Study on Dynamic Facial Emotions in AI-Generated Avatars
Pegah Salehi, Sajad Amouei Sheshkal, Vajira Thambawita, P{\aa}l Halvorsen
https://arxiv.org/abs/2506.13477

From Flat to Feeling: A Feasibility and Impact Study on Dynamic Facial Emotions in AI-Generated Avatars
Dynamic facial emotion is essential for believable AI-generated avatars; however, most systems remain visually inert, limiting their utility in high-stakes simulations such as virtual training for investigative interviews with abused children. We introduce and evaluate a real-time architecture fusing Unreal Engine 5 MetaHuman rendering with NVIDIA Omniverse Audio2Face to translate vocal prosody into high-fidelity facial expressions on photorealistic child avatars. We implemented a distributed t…

ستدرك يوما ما أن الحقيقة كانت الشيء الوحيد الذي لم تعرفه. تحية عربية برائحة القهوة. نحن حضارة العلم والعلماء وسنبقى كذلك. الجيل الجديد، بإرادة الحرية والتمرد، كفيل بتغيير الصورة النمطية المحدودة التي تفرضها السلطة والهيمنة.
الفوضى إلى الأبد
#الحرية_والتمرد

Orbits of very distant #asteroid satellites: https://www.aanda.org/articles/aa/full_html/2025/06/aa51124-24/aa51124-24.html -> "The very wide binary asteroid (VWBA) population is a small subset of the population of known binary and multiple asteroids made of systems with very widely orbiting satellites and long orbital periods, on the order of tens to hundreds of days. The origin of these systems is debatable, and most members of this population are poorly characterized."

Electronic properties of multilayered Lieb, transition, and Kagome lattices
T. F. O. Lara, E. B. Barros, W. P. Lima, J. P. G. Nascimento, J. Milton Pereira Jr., T. A. S. Pereira, D. R. da Costa
https://arxiv.org/abs/2506.15023

Electronic properties of multilayered Lieb, transition, and Kagome lattices
Based on the interconvertibility feature shared between monolayer Lieb and Kagome lattices, which allows mapping transition lattice's stages between these two limits ($π/2 \leqθ\leq 2π/3$), in this work we extend the recently proposed one-control ($θ$) parameter tight-binding model for the case of a multilayer Lieb-Kagome system, by considering the two most-common stacks: AA and AB (Bernal). We systematically study the band transformations between the two lattices by adjusting the interlaye…

Yeah, his AA show was great. I miss a lot of those old shows. And Maron's show was on late. A real proto version of WTF.
Cool you had mutual friends with him.
I'll miss the show so much. Really nothing else like it imho.

これ読むといいんじゃないかな。うえのさんの。
--
二つのクリスマス. ——何かを「待ちのぞむ」ということ | by ueno | Medium
https://oryzivora.page/二つのクリスマス-750d0b08d274?gi=705df5f6d027

Stara istuttaa 85 000 kesäkukkaa – Stadin kesäkukkien suunnittelija vaihtuu yli 30 vuoden jälkeen https://www.hel.fi/fi/uutiset/stara-istuttaa-85-000-kesakukkaa-stadin-kesakukkien-suunnittelija-vaihtuu-yli-30-…

Stara istuttaa 85 000 kesäkukkaa – Stadin kesäkukkien suunnittelija vaihtuu yli 30 vuoden jälkeen
Helsingin kesä on jälleen täynnä kukkaloistoa. Helsingin kaupungin rakentamispalveluliikelaitos Stara on kasvattanut Kaupunginpuutarhalla 155 000 kausikasvia, joista 94 000 on kesäkukkia. Kaupunkikuvasta tutuiksi tulleita erilaisia suuria kukka-astioita on noin 900, ja ne sijoitetaan ympäri Helsinkiä. Kaiken kaikkiaan Helsingissä kesäkukkia istutetaan yli 180 kohteeseen. Stara vastaa 85 000 kesäkukan istuttamisesta. Istutuksia tehdään Staran hoitamille alueille kukkaryhmiin ja -asti…

🔊 #NowPlaying on #BBCRadio3:
#WordsAndMusic
- Bradford
From Arthur Butterworth's Path Across the Moors to the 'mean streets' in AA Dhand's Virdee crime novels; famous concerts at St George's Hall to the play Rita, Sue and Bob Too.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002czvg

PyGemini: Unified Software Development towards Maritime Autonomy Systems
Kjetil Vasstein, Christian Le, Simon Lerv{\aa}g Breivik, Trygve Maukon Myhr, Annette Stahl, Edmund F{\o}rland Brekke
https://arxiv.org/abs/2506.06262

PyGemini: Unified Software Development towards Maritime Autonomy Systems
Ensuring the safety and certifiability of autonomous surface vessels (ASVs) requires robust decision-making systems, supported by extensive simulation, testing, and validation across a broad range of scenarios. However, the current landscape of maritime autonomy development is fragmented -- relying on disparate tools for communication, simulation, monitoring, and system integration -- which hampers interdisciplinary collaboration and inhibits the creation of compelling assurance cases, demanded…

Large-scale LH2 pipeline infrastructure concept for airports
H. A. Krog, Y. Jooss, H. Fyhn, P. Neks{\aa}, I. Hjorth
https://arxiv.org/abs/2506.09410 https:…

Large-scale LH2 pipeline infrastructure concept for airports
Infrastructure and processes for handling of liquid hydrogen (LH2) is needed to enable large-scale decarbonization of aviation with hydrogen aircraft. At large airports, pipeline and hydrant systems will be important for a mature hydrogen-powered air travel market. As the vaporization of LH2 is a challenge in fuel handling, the pipeline infrastructure must be designed and operated such that the fuel is subcooled. Through modelling and simulation of aircraft tanks refuelling by a pipeline infras…

Dark matter spiral arms in Milky Way-like halos: #DarkMatter trailing galaxy arms: https://arstechnica.com/science/2025/06/simulations-find-ghostly-whirls-of-dark-matter-trailing-galaxy-arms/

Time-dependent Gaussian basis sets for many-body systems using Rothe's method: A mean-field study
Simon Elias Schrader, H{\aa}kon Emil Kristiansen, Thomas Bondo Pedersen, Simen Kvaal
https://arxiv.org/abs/2506.10701

Time-dependent Gaussian basis sets for many-body systems using Rothe's method: A mean-field study
A challenge in modeling time-dependent strong-field processes such as high-harmonic generation for many-body systems, is how to effectively represent the electronic continuum. We apply Rothe's method to the time-dependent Hartree-Fock (TDHF) and density functional theory (TDDFT) equations of motion for the orbitals, which reformulates them as an optimization problem. We show that thawed, complex-valued Gaussian basis sets can be propagated efficiently for these orbital-based approaches, removin…

Pressure-Driven Metallicity in {\AA}ngstr\"om-Thickness 2D Bismuth and Layer-Selective Ohmic Contact to MoS2
Shuhua Wang, Shibo Fang, Qiang Li, Yunliang Yue, Zongmeng Yang, Xiaotian Sun, Jing Lu, Chit Siong Lau, L. K. Ang, Lain-Jong Li, Yee Sin Ang
https://arxiv.org/abs/2506.05133

Pressure-Driven Metallicity in Ångström-Thickness 2D Bismuth and Layer-Selective Ohmic Contact to MoS2
Recent fabrication of two-dimensional (2D) metallic bismuth (Bi) via van der Waals (vdW) squeezing method opens a new avenue to ultrascaling metallic materials into the ångström-thickness regime [Nature 639, 354 (2025)]. However, freestanding 2D Bi is typically known to exhibit a semiconducting phase [Nature 617, 67 (2023), Phys. Rev. Lett. 131, 236801 (2023)], which contradicts with the experimentally observed metallicity in vdW-squeezed 2D Bi. Here we show that such discrepancy originates f…

An Array Decomposition Method for Finite Arrays with Electrically Connected Elements for fast Toeplitz Solvers
Lucas {\AA}kerstedt, Harald Hultin, B. L. G. Jonsson
https://arxiv.org/abs/2506.04710

An Array Decomposition Method for Finite Arrays with Electrically Connected Elements for fast Toeplitz Solvers
A large part of the geometry of array antennas is often partially defined by finite translational symmetries. Applying the method of moments (MoM) with the RWG-like element on an appropriately structured mesh to these arrays results in an impedance matrix where the main part exhibits a multilevel block Toeplitz structure. This article introduces a memory-efficient construction method that effectively represents and reuses impedance calculations. The proposed method, applicable to electrically c…

Abundance Effects from Protoplanetary Disk Outflows
{\AA}ke Nordlund
https://arxiv.org/abs/2506.04199 https://arxiv.org/pdf/2506.0419…

Abundance Effects from Protoplanetary Disk Outflows
Systematic abundance differences that depend on the condensation temperatures of elements have been observed, in particular for stars similar to the Sun; solar twins and solar analogs. Similar differences have also recently been shown to exist between solar abundances and abundances of refractory elements in primitive chondrites. Numerous mechanisms have been proposed to account for these effects, including also differences observed in binary systems. Rather than relying on specific mechanisms,…

Integrating Expert Knowledge and Recursive Bayesian Inference: A Framework for Spatial and Spatio-Temporal Data Challenges
Mario Figueira, David Conesa, Antonio L\'opez-Qu\'ilez, H{\aa}vard Rue
https://arxiv.org/abs/2506.00221

Integrating Expert Knowledge and Recursive Bayesian Inference: A Framework for Spatial and Spatio-Temporal Data Challenges
Expert elicitation is a critical approach for addressing data scarcity across various disciplines. But moreover, it can also complement big data analytics by mitigating the limitations of observational data, such as incompleteness and reliability issues, thereby enhancing model estimates through the integration of disparate or conflicting data sources. The paper also outlines various strategies for integrating prior information within the Integrated Nested Laplace Approximation method and propo…

Charting circumstellar chemistry of carbon-rich asymptotic giant branch stars. II. Abundances and spatial distributions of CS
R. Unnikrishnan, M. Andriantsaralaza, E. De Beck, L. -{\AA}. Nyman, H. Olofsson, W. H. T. Vlemmings, M. Maercker, M. Van de Sande, T. Danilovich, T. J. Millar, S. B. Charnley, M. G. Rawlings
https://arxiv…

Charting circumstellar chemistry of carbon-rich asymptotic giant branch stars. II. Abundances and spatial distributions of CS
The circumstellar envelopes (CSEs) of asymptotic giant branch (AGB) stars harbour a rich variety of molecules and are sites of complex chemistry. Our current understanding of the circumstellar chemical processes of carbon-rich AGB stars is predominantly based on observations of a single star, IRC+10216, often regarded as an archetypical carbon star. We aim to estimate stellar and circumstellar properties for five carbon stars, and constrain their circumstellar CS abundances. This study compares…

This https://arxiv.org/abs/2505.17212 has been replaced.
initial toot: https://mastoxiv.page/@a…

Engineering Altermagnetism via Layer Shifts and Spin Order in Bilayer MnPS$_3$
We investigate how stacking configuration and magnetic ordering determine the magnetic phases of bilayer MnPS$_3$, using density-functional theory and spin-Laue symmetry analysis. While monolayer MnPS$_3$ is a collinear antiferromagnet with no spin splitting, our calculations show that the bilayer can host either Type II (AFM) or Type III (altermagnetic) phases depending sensitively on stacking and spin alignment. We focus on two representative stackings: AA, where the top layer sits directly a…

Geometric Shape Modelling and Volume Estimation of Dry Bulk Cargo Piles using a Single Image
Debanshu Ratha, Madhu Koirala, P{\aa}l Gunnar Ellingsen
https://arxiv.org/abs/2505.17896

Geometric Shape Modelling and Volume Estimation of Dry Bulk Cargo Piles using a Single Image
Volume estimation of onshore cargo piles is of economic importance for shipping and mining companies as well as public authorities for real-time planning of logistics, business intelligence, transport services by land or sea and governmental oversight. In remote sensing literature, the volume of pile is estimated by relying on the illumination property of object to construct the geometric shape from a single image, alternatively, stereographic imaging for construction of a digital elevation mod…

Exactly solvable spin liquids in Kitaev bilayers and moir\'e superlattices
Ivan Dutta, Anamitra Mukherjee, Onur Erten, Kush Saha
https://arxiv.org/abs/2506.04181

Exactly solvable spin liquids in Kitaev bilayers and moiré superlattices
Building on the recent advancements on moiré superlattices, we propose an exactly solvable model with Kitaev-type interactions on a bilayer honeycomb lattice for both AA stacking and moiré superlattices. Employing Monte Carlo simulations and variational analysis, we uncover a rich variety of phases where the intra and interlayer $\mathbb{Z}_2$ fluxes (visons) are arranged in a periodic fashion in the ground state, tuned by interlayer coupling and out-of-plane external magnetic field. We furth…