Tootfinder

Robustness of analogue Hawking radiation in cavities with moving boundaries
Alberto Garc\'ia Mart\'in-Caro, Javier Olmedo, Jose M. S\'anchez Vel\'azquez
https://arxiv.org/abs/2507.13894

Robustness of analogue Hawking radiation in cavities with moving boundaries
In this work we explore the limitations and robustness of thermal radiation in dynamical Casimir systems serving as analogs for Hawking radiation. Through detailed numerical analysis, we characterize particle production spectra in cavities with moving boundaries under various configurations, including expanding, collapsing, and rigidly accelerating scenarios. We find that thermal signatures emerge in specific expanding cavity configurations but are highly dependent on frequency bands and accele…

Predicting Perceptual Boundaries in Auditory Streaming using Delay Differential Equations
Asim Alawfi, Farzaneh Darki, Jan Sieber
https://arxiv.org/abs/2507.14157

Predicting Perceptual Boundaries in Auditory Streaming using Delay Differential Equations
Auditory streaming enables the brain to organize sequences of sounds into perceptually distinct sources, such as following a conversation in a noisy environment. A typical experiment for investigating perceptual boundaries and bistability is to present a subject with a stream containing two alternating tone stimuli. We investigate a model for the processing of such a stream consisting of two identical neural populations of excitatory and inhibitory neurons. The populations are coupled via delay…

A fourth order sharp immersed method for the incompressible Navier-Stokes equations with stationary and moving boundaries and interfaces
Xinjie Ji, Changxiao Nigel Shen, Wim M. van Rees
https://arxiv.org/abs/2508.15083

A fourth order sharp immersed method for the incompressible Navier-Stokes equations with stationary and moving boundaries and interfaces
We propose a fourth order Navier-Stokes solver based on the immersed interface method (IIM), for flow problems with stationary and one-way coupled moving boundaries and interfaces. Our algorithm employs a Runge-Kutta-based projection method that maintains high-order temporal accuracy in both velocity and pressure for steady and unsteady velocity boundary conditions. Fourth order spatial accuracy is achieved through a novel fifth order IIM discretization scheme for the advection term, as well as…

Hundreds of employees at the National Aeronautics and Space Administration (NASA)
have signed an open letter,
directed to Department of Transportation (DOT) Secretary Sean Duffy,
criticizing proposed cuts to the agency
and condemning recent policies that could potentially harm the U.S.
The letter, titled
“The Voyager Declaration”
in honor of two spacecraft that were launched by NASA in the 1970s
(that continue to zoom beyond the boundaries of t…

Hundreds of NASA Employees Write Open Letter Blasting Trump Over “Rapid and Wasteful Changes” to Agency
Trump’s cuts will “leave the American people without the unique public good that NASA provides,” NASA workers wrote.

Butterfly Effects in Toolchains: A Comprehensive Analysis of Failed Parameter Filling in LLM Tool-Agent Systems
Qian Xiong, Yuekai Huang, Ziyou Jiang, Zhiyuan Chang, Yujia Zheng, Tianhao Li, Mingyang Li
https://arxiv.org/abs/2507.15296

Butterfly Effects in Toolchains: A Comprehensive Analysis of Failed Parameter Filling in LLM Tool-Agent Systems
The emergence of the tool agent paradigm has broadened the capability boundaries of the Large Language Model (LLM), enabling it to complete more complex tasks. However, the effectiveness of this paradigm is limited due to the issue of parameter failure during its execution. To explore this phenomenon and propose corresponding suggestions, we first construct a parameter failure taxonomy in this paper. We derive five failure categories from the invocation chain of a mainstream tool agent. Then, w…

Deep Skin Lesion Segmentation with Transformer-CNN Fusion: Toward Intelligent Skin Cancer Analysis
Xin Wang, Xiaopei Zhang, Xingang Wang
https://arxiv.org/abs/2508.14509 https:/…

Deep Skin Lesion Segmentation with Transformer-CNN Fusion: Toward Intelligent Skin Cancer Analysis
This paper proposes a high-precision semantic segmentation method based on an improved TransUNet architecture to address the challenges of complex lesion structures, blurred boundaries, and significant scale variations in skin lesion images. The method integrates a transformer module into the traditional encoder-decoder framework to model global semantic information, while retaining a convolutional branch to preserve local texture and edge features. This enhances the model's ability to perceive…

Critical Importance of Grain Boundaries to the Conductivity of Polycrystalline Molecular Crystals
Shujit Chandra Paul, William A. Goddard III, Michael J. Zdilla, Prabhat Prakash, Stephanie L. Wunder
https://arxiv.org/abs/2508.12172

Critical Importance of Grain Boundaries to the Conductivity of Polycrystalline Molecular Crystals
Soft-solid molecular crystals consist of crystalline grains and fluid grain boundaries (GB) that enhance the grain binding and transport of Li+ ions between the grains. The total ionic conductivity consists of ion migration in both the grains and GBs. To unravel these contributions in adiponitrile (Adpn)-LiPF6 molecular crystals, the GB volume fraction was varied by changing the size of the crystals and the adiponitrile/LiPF6 molar ratio. Molecular dynamic (MD) simulations indicate that ion mot…

A reflection principle for nonintersecting paths and lozenge tilings with free boundaries
Seok Hyun Byun
https://arxiv.org/abs/2508.12135 https://arxiv.org…

A reflection principle for nonintersecting paths and lozenge tilings with free boundaries
Okada and Stembridge's Pfaffian formula for the enumeration of families of nonintersecting paths with fixed starting points and unfixed ending points has been widely used to resolve many challenging problems in enumerative combinatorics. In this paper, we present a new formula that complements Okada and Stembridge's Pfaffian formula. The proof is based on a formula for the square of the sum of maximum minors of matrices obtained from Okada's formula. The combinatorial interpretation of the new …

CXL-GPU: Pushing GPU Memory Boundaries with the Integration of CXL Technologies
Donghyun Gouk, Seungkwan Kang, Seungjun Lee, Jiseon Kim, Kyungkuk Nam, Eojin Ryu, Sangwon Lee, Dongpyung Kim, Junhyeok Jang, Hanyeoreum Bae, Myoungsoo Jung
https://arxiv.org/abs/2506.15601

CXL-GPU: Pushing GPU Memory Boundaries with the Integration of CXL Technologies
This work introduces a GPU storage expansion solution utilizing CXL, featuring a novel GPU system design with multiple CXL root ports for integrating diverse storage media (DRAMs and/or SSDs). We developed and siliconized a custom CXL controller integrated at the hardware RTL level, achieving two-digit nanosecond roundtrip latency, the first in the field. This study also includes speculative read and deterministic store mechanisms to efficiently manage read and write operations to hide the endp…

On combination theorems and Bowditch boundaries of relatively hyperbolic TDLC groups
Swarnali Datta, Arunava Mandal, Ravi Tomar
https://arxiv.org/abs/2508.13038 https://

On combination theorems and Bowditch boundaries of relatively hyperbolic TDLC groups
Based on the work of Farb, Bowditch, and Groves-Manning on discrete relatively hyperbolic groups, we introduce an approach to relative hyperbolicity for totally disconnected locally compact (TDLC) groups. For compactly generated TDLC groups, we prove that this notion is equivalent to the one introduced by Arora-Pedroza. Let $G=A\ast_C B$ or $G=A\ast_C$ where $A$ and $B$ are relatively hyperbolic TDLC groups and $C$ is compact. We prove that $G$ is a relatively hyperbolic TDLC group and give a c…

Defect Interactions Through Periodic Boundaries in Two-Dimensional $p$-atics
Cody D. Schimming
https://arxiv.org/abs/2507.12597 https://

Defect Interactions Through Periodic Boundaries in Two-Dimensional $p$-atics
Periodic boundary conditions are a common tool used to emulate effectively infinite domains. However, two-dimensional periodic domains are topologically distinct from the infinite plane, eliciting the question: How do periodic boundaries affect systems with topological properties themselves? In this work, I derive an analytical expression for the orientation fields of two-dimensional $p$-atic liquid crystals, systems with $p$-fold rotational symmetry, with topological defects in a flat domain s…

Bridging Boundaries: How to Foster Effective Research Collaborations Across Affiliations in the Field of Trust and Safety
Amanda Menking, Mona Elswah, David J. Gr\"uning, Lasse H. Hansen, Irene Huang, Julia Kamin, Catrine Normann
https://arxiv.org/abs/2507.13008

Bridging Boundaries: How to Foster Effective Research Collaborations Across Affiliations in the Field of Trust and Safety
As the field of Trust and Safety in digital spaces continues to grow, it has become increasingly necessary - but also increasingly complex - to collaborate on research across the academic, industry, governmental and non-governmental sectors. This paper examines how cross-affiliation research partnerships can be structured to overcome misaligned incentives, timelines and constraints while delivering on the unique strengths of each stakeholder. Drawing on our own experience of cross-sector collab…

Exploring the Interplay Between Quantum Entanglement and Decoherence
Samuel Marquez Gonzalez
https://arxiv.org/abs/2508.14790 https://arxiv.org/pdf/2508.14…

Exploring the Interplay Between Quantum Entanglement and Decoherence
Quantum entanglement manifests as a distinctive correlation between particles that transcends classical boundaries when their quantum states cannot be described independently. On the other hand, as quantum systems interact with their surroundings, decoherence emerges, leading to the gradual decay of quantum coherence and entanglement. In the case of entanglement, this is known as entanglement sudden death (ESD). Decoherence mechanisms are examined, focusing on how various environmental factors,…

Trustworthy Tree-based Machine Learning by $MoS_2$ Flash-based Analog CAM with Inherent Soft Boundaries
Bo Wen, Guoyun Gao, Zhicheng Xu, Ruibin Mao, Xiaojuan Qi, X. Sharon Hu, Xunzhao Yin, Can Li
https://arxiv.org/abs/2507.12384

Trustworthy Tree-based Machine Learning by $MoS_2$ Flash-based Analog CAM with Inherent Soft Boundaries
The rapid advancement of artificial intelligence has raised concerns regarding its trustworthiness, especially in terms of interpretability and robustness. Tree-based models like Random Forest and XGBoost excel in interpretability and accuracy for tabular data, but scaling them remains computationally expensive due to poor data locality and high data dependence. Previous efforts to accelerate these models with analog content addressable memory (CAM) have struggled, due to the fact that the diff…

Replaced article(s) found for q-fin.PR. https://arxiv.org/list/q-fin.PR/new
[1/1]:
- Floating exercise boundaries for American options in time-inhomogeneous models
Andrey Itkin, Yerkin Kitapbayev

Critical fluctuations of last passage percolation with thick boundaries
Elnur Emrah, Patrik L. Ferrari, Min Liu
https://arxiv.org/abs/2508.12734 https://ar…

Critical fluctuations of last passage percolation with thick boundaries
We consider the exponential last passage percolation (LPP) with thick two-sided boundary that consists of a few inhomogeneous columns and rows. Ben Arous and Corwin previously studied the limit fluctuations in this model except in a critical regime, for which they predicted that the limit distribution exists and depends only on the most dominant columns and rows. In this article, we prove their conjecture and identify the limit distribution explicitly in terms of a Fredholm determinant of a $2 …

The effects of no-slip boundaries and external force torque on two-dimensional turbulence in a square domain
Alisa Shikanian, Vladimir Parfenyev
https://arxiv.org/abs/2508.13590

The effects of no-slip boundaries and external force torque on two-dimensional turbulence in a square domain
We study two-dimensional turbulence in a square no-slip domain without bottom drag using direct numerical simulations. The dynamics are shown to depend strongly on the torque $M$ of the external forcing. When $M$ is relatively large, a long-lived coherent vortex forms at the domain center, establishing a persistent angular momentum. At lower torques, the angular momentum undergoes random sign reversals due to spontaneous switching of the central vortex circulation, though it predominantly align…

Estimates for viscosity solutions of fully nonlinear equations near smooth boundaries
Niklas L. P. Lundstr\"om, Marcus Olofsson, Jesper Singh
https://arxiv.org/abs/2506.12477

Estimates for viscosity solutions of fully nonlinear equations near smooth boundaries
We reduce the problem of proving decay estimates for viscosity solutions of fully nonlinear PDEs to proving analogous estimates for solutions of one-dimensional ordinary differential inequalities. Our machinery allow the ellipticity to vanish near the boundary and permits general, possibly unbounded, lower-order terms. A key consequence is the derivation of boundary Harnack inequalities for a broad class of fully nonlinear, nonhomogeneous equations near $C^{1,1}$-boundaries. In combination wi…

Analyzing Information Sharing and Coordination in Multi-Agent Planning
Tianyue Ou, Saujas Vaduguru, Daniel Fried
https://arxiv.org/abs/2508.12981 https://a…

Analyzing Information Sharing and Coordination in Multi-Agent Planning
Multi-agent systems (MASs) have pushed the boundaries of large language model (LLM) agents in domains such as web research and software engineering. However, long-horizon, multi-constraint planning tasks involve conditioning on detailed information and satisfying complex interdependent constraints, which can pose a challenge for these systems. In this study, we construct an LLM-based MAS for a travel planning task which is representative of these challenges. We evaluate the impact of a notebook…

Methodological considerations for semialgebraic hypothesis testing with incomplete U-statistics
David Barnhill, Marina Garrote-L\'opez, Elizabeth Gross, Max Hill, Bryson Kagy, John A. Rhodes, Joy Z. Zhang
https://arxiv.org/abs/2507.13531

Methodological considerations for semialgebraic hypothesis testing with incomplete U-statistics
Recently, Sturma, Drton, and Leung proposed a general-purpose stochastic method for hypothesis testing in models defined by polynomial equality and inequality constraints. Notably, the method remains theoretically valid even near irregular points, such as singularities and boundaries, where traditional testing approaches often break down. In this paper, we evaluate its practical performance on a collection of biologically motivated models from phylogenetics. While the method performs remarkably…

SEDEG:Sequential Enhancement of Decoder and Encoder's Generality for Class Incremental Learning with Small Memory
Hongyang Chen, Shaoling Pu, Lingyu Zheng, Zhongwu Sun
https://arxiv.org/abs/2508.12932

SEDEG:Sequential Enhancement of Decoder and Encoder's Generality for Class Incremental Learning with Small Memory
In incremental learning, enhancing the generality of knowledge is crucial for adapting to dynamic data inputs. It can develop generalized representations or more balanced decision boundaries, preventing the degradation of long-term knowledge over time and thus mitigating catastrophic forgetting. Some emerging incremental learning methods adopt an encoder-decoder architecture and have achieved promising results. In the encoder-decoder achitecture, improving the generalization capabilities of bot…

Replaced article(s) found for cs.AI. https://arxiv.org/list/cs.AI/new
[2/5]:
- Advancing oncology with federated learning: transcending boundaries in breast, lung, and prostate...
Anshu Ankolekar, et al.

State & Geopolitical Censorship on Twitter (X): Detection & Impact Analysis of Withheld Content
Yusuf M\"ucahit \c{C}etinkaya, Tu\u{g}rulcan Elmas
https://arxiv.org/abs/2508.13375

State & Geopolitical Censorship on Twitter (X): Detection & Impact Analysis of Withheld Content
State and geopolitical censorship on Twitter, now X, has been turning into a routine, raising concerns about the boundaries between criminal content and freedom of speech. One such censorship practice, withholding content in a particular state has renewed attention due to Elon Musk's apparent willingness to comply with state demands. In this study, we present the first quantitative analysis of the impact of state censorship by withholding on social media using a dataset in which two prominent p…

A Voxel-Wise Uncertainty-Guided Framework for Glioma Segmentation Using Spherical Projection-Based U-Net and Localized Refinement in Multi-Parametric MRI
Zhenyu Yang, Chen Yang, Rihui Zhang, Minbin Chen, Chunhao Wang, Fang-Fang Yin
https://arxiv.org/abs/2507.15622

A Voxel-Wise Uncertainty-Guided Framework for Glioma Segmentation Using Spherical Projection-Based U-Net and Localized Refinement in Multi-Parametric MRI
Purpose: Accurate segmentation of glioma subregions in multi-parametric MRI (MP-MRI) is essential for diagnosis and treatment planning but remains challenging due to tumor heterogeneity and ambiguous boundaries. This study proposes an uncertainty-guided hybrid framework integrating spherical projection-based 2D modeling with targeted 3D refinement to enhance segmentation accuracy and interpretability. Methods: Using the BraTS2020 dataset (369 patients, four-modality MP-MRI), three 2D U-Nets wer…

Moebius: The Artist Who Pushed the Boundaries of Our Imagination | TheCollector https://www.thecollector.com/moebius-artist-pushed-boundaries-our-imagination/

Moebius: The Artist Who Pushed the Boundaries of Our Imagination | TheCollector
The world of comic books, nowadays greatly respected for its artistic and narrative values, owes so much to the artistry, the imagination, and the uniqueness of Moebius.

we gotta figure out what the boundaries of identity politics are. how would the usa look now if in 2016 there was just one prominent football watching, beer drinking, country music listening, southern straight white guy running for one of the branches with the same positions as zohran mamdani

Visual metrics on boundaries of hyperbolic spaces
Emily Stark
https://arxiv.org/abs/2506.10108 https://arxiv.org/pdf/2506.10108

Visual metrics on boundaries of hyperbolic spaces
This is an expository article on visual metrics on boundaries of hyperbolic metric spaces. We discuss the construction of visual metrics, quasisymmetries and their invariants, Hausdorff and conformal dimension, and constructions and applications of Gromov's round trees. There is a focus on providing examples throughout. These notes are based on the material of a minicourse given by the author at the 2024 Riverside Workshop in Geometric Group Theory.

Bureaucracy's Boundaries -- Breaking down the legal issues surrounding the White House's terminations ... (Anne Joseph O'Connell/Lawfare)
https://www.lawfaremedia.org/article/bureaucracy-s-boundaries
http://www.memeorandum.com/250605/p119#a250605p119

I got a commission to render a map of the municipality of Macabebe (and Masantol) in the province of Pampanga, #Philippines 🇵🇭. So here’s a preview of the said map.
Almost all of the data is from #OpenStreetMap.
(Commissions are open if you want maps and like how I create maps. 😉)

Pushing the Boundaries of Immersion and Storytelling: A Technical Review of Unreal Engine
Oleksandra Sobchyshak, Santiago Berrezueta-Guzman, Stefan Wagner
https://arxiv.org/abs/2507.08142

Pushing the Boundaries of Immersion and Storytelling: A Technical Review of Unreal Engine
Unreal Engine is a platform that has influenced immersive storytelling and virtual reality (VR) through its advanced features and diverse applications. This paper provides an in-depth technical review of Unreal Engine. It analyzes its key innovations in creating hyper-realistic environments and emotionally engaging narratives, with significant applications in gaming, virtual production, education, cultural preservation, and healthcare. The findings of this article highlight Unreal Engine's tran…

Deep Research: A Survey of Autonomous Research Agents
Wenlin Zhang, Xiaopeng Li, Yingyi Zhang, Pengyue Jia, Yichao Wang, Huifeng Guo, Yong Liu, Xiangyu Zhao
https://arxiv.org/abs/2508.12752

Deep Research: A Survey of Autonomous Research Agents
The rapid advancement of large language models (LLMs) has driven the development of agentic systems capable of autonomously performing complex tasks. Despite their impressive capabilities, LLMs remain constrained by their internal knowledge boundaries. To overcome these limitations, the paradigm of deep research has been proposed, wherein agents actively engage in planning, retrieval, and synthesis to generate comprehensive and faithful analytical reports grounded in web-based evidence. In this…

I installed #iOS26 on my personal phone for the first time (dev beta3) and hoooly moly the UI design is as bad as everyone has been saying—and worse. Frustrations in the first day: functional content viewports noticeably smaller on my Mini display; lower info density everywhere; buttons over photos completely illegible; diffraction effects incredibly distracting; low/no-contrast UI boundaries with…

Construction of an isometric immersion of a bounded, planar region from a framed curve
Brian Seguin, Eliot Fried
https://arxiv.org/abs/2508.11840 https://a…

Construction of an isometric immersion of a bounded, planar region from a framed curve
We develop a framework for characterizing isometric immersions of simply connected, bounded, planar regions with piecewise smooth boundaries into three-dimensional space. Each immersion is associated with a framed curve along the boundary of the image surface, comprised by a parametrized curve and a unit normal vector. We identify a set of compatibility and regularity conditions on this framed curve that ensure the existence of a $C^1$ isometric immersion that is $C^2$ almost everywhere and pos…

Atomic-scale insights on grain boundary segregation in a cathode battery material
Inger-Emma Nylund, Elise R. Eilertsen, Constantinos A. Hatzoglou, Kaja Eggen Aune, Ruben Bj{\o}rge, Antonius T. J. van Helvoort, Ann Mari Svensson, Paraskevas Kontis
https://arxiv.org/abs/2506.13940

Atomic-scale insights on grain boundary segregation in a cathode battery material
The grain boundary segregation of the Co-free pristine spinel LiNi0.5Mn1.5O4 cathode material has been studied by transmission electron microscopy and atom probe tomography. The segregation of Mn and the depletion of Ni at grain boundaries was observed by electron energy loss spectroscopy. These observations were also confirmed by atom probe tomography at other grain boundaries, which also revealed segregation of O and depletion of Li at grain boundaries. In addition, both methods revealed the …

🇺🇦 #NowPlaying on KEXP's #VarietyMix
Kaitlyn Aurelia Smith:
🎵 Unbraiding Boundless Energy Within Boundaries
#KaitlynAureliaSmith
https://kaitlynaureliasmith.bandcamp.com/track/unbraiding-boundless-energy-within-boundaries
https://open.spotify.com/track/4TV3fpMUu9GD8HUwI1r5UN

@… The chunks are rounded down and up, because the file boundaries don’t line up perfectly with cell boundaries. I make them as big as possible so they will often take up a whole cell when they actually only fill part of it.
I’d like to make this clearer, visually, but I haven’t had time yet.

From Intention to Execution: Probing the Generalization Boundaries of Vision-Language-Action Models
Irving Fang, Juexiao Zhang, Shengbang Tong, Chen Feng
https://arxiv.org/abs/2506.09930

From Intention to Execution: Probing the Generalization Boundaries of Vision-Language-Action Models
One promise that Vision-Language-Action (VLA) models hold over traditional imitation learning for robotics is to leverage the broad generalization capabilities of large Vision-Language Models (VLMs) to produce versatile, "generalist" robot policies. However, current evaluations of VLAs remain insufficient. Traditional imitation learning benchmarks are unsuitable due to the lack of language instructions. Emerging benchmarks for VLAs that incorporate language often come with limited evaluation ta…

Optimal regularity up to the boundary for Plateau-quasi-minimizers
Eve Machefert
https://arxiv.org/abs/2507.13189 https://arxiv.org/p…

Optimal regularity up to the boundary for Plateau-quasi-minimizers
We study the regularity of quasi-minimal sets (in the sense of David and Semmes) with a boundary condition, which can be interpreted as quasi-minimizers of Plateau's problem in co-dimension one. For these Plateau-quasi-minimizers, we establish the optimal regularity, which is a characterization by bi-John domains with Ahlfors regular boundaries. This requires to investigate the Ahlfors regularity and also the uniform rectifiability of those sets, up to the boundary.

Piano: A Multi-Constraint Pin Assignment-Aware Floorplanner
Zhexuan Xu, Kexin Zhou, Jie Wang, Zijie Geng, Siyuan Xu, Shixiong Kai, Mingxuan Yuan, Feng Wu
https://arxiv.org/abs/2508.13161

Piano: A Multi-Constraint Pin Assignment-Aware Floorplanner
Floorplanning is a critical step in VLSI physical design, increasingly complicated by modern constraints such as fixed-outline requirements, whitespace removal, and the presence of pre-placed modules. In addition, the assignment of pins on module boundaries significantly impacts the performance of subsequent stages, including detailed placement and routing. However, traditional floorplanners often overlook pin assignment with modern constraints during the floorplanning stage. In this work, we i…

Oh yeah, my copy of the Psygnosis book is being shipped ✌️
#psygnosis

Today's cup of flat white #coffee. The latte art clearly still needs more practice, but the coffee is already better than what my frother and mokka pot delivered before.
#FlatWhite

Edge-state competition in a 2D topological insulator-semiconductor heterostructure
Wei Li, Pier Philipsen, Thomas Brumme, Thomas Heine
https://arxiv.org/abs/2508.12841 https://

Edge-state competition in a 2D topological insulator-semiconductor heterostructure
Quantum spin Hall edge transport in two-dimensional transition-metal dichalcogenides depends on whether their one-dimensional edge channels are preserved under realistic substrates and device boundaries. Here we implement spin-orbit coupling in DFTB and GFN-xTB within the Amsterdam Modeling Suite, and apply it to 1T$'$/2H WSe$_2$ heterostructures. Edge-projected spectra reveal robust edge states in 1T$'$ ribbons; and these states remain robust against a laterally infinite 2H substrate, which on…

CFP - Australian Association for Jewish Studies Annual Conference - 8-9 February 2026
https://ift.tt/doPB9I3
University of Alaska - Fairbanks - Alaska & Polar Regions Area Studies Bibliographer & Curator of…
via Input 4 RELCFP

🚀 𝘀𝗽𝗮𝗻𝗶𝘀𝗵𝗼𝗱𝗱𝗮𝘁𝗮 0.2.0 is here. As before, you are getting nicely formatted Open Mobility Big Data released by the Spanish Ministry of Transport and Sustainable Mobility (MITMS) in a reproducible way. #rstats #opendata

Get Spanish Origin-Destination Data
Gain seamless access to origin-destination (OD) data from the Spanish Ministry of Transport, hosted at . This package simplifies the management of these large datasets by providing tools to download zone boundaries, handle associated origin-destination data, and process it efficiently with the duckdb database interface. Local caching minimizes repeated downloads, streamlining wo…

Disa: Accurate Learning-based Static Disassembly with Attentions
Peicheng Wang, Monika Santra, Mingyu Liu, Cong Sun, Dongrui Zeng, Gang Tan
https://arxiv.org/abs/2507.07246

Disa: Accurate Learning-based Static Disassembly with Attentions
For reverse engineering related security domains, such as vulnerability detection, malware analysis, and binary hardening, disassembly is crucial yet challenging. The fundamental challenge of disassembly is to identify instruction and function boundaries. Classic approaches rely on file-format assumptions and architecture-specific heuristics to guess the boundaries, resulting in incomplete and incorrect disassembly, especially when the binary is obfuscated. Recent advancements of disassembly ha…

Reduced-Order Time Splitting for Navier-Stokes with Open Boundaries
Mejdi Aza\"iez, Tom\'as Chac\'on Rebollo, Carlos N\'u\~nez Fern\'andez, Samuele Rubino
https://arxiv.org/abs/2506.10763

Reduced-Order Time Splitting for Navier-Stokes with Open Boundaries
In this work, we propose a Proper Orthogonal Decomposition-Reduced Order Model (POD-ROM) applied to time-splitting schemes for solving the Navier-Stokes equations with open boundary conditions. In this method, we combine three strategies to reduce the computing time to solve NSE: time splitting, reduction of the computational domain through non-standard treatment of open boundary conditions and reduced order modelling. To make the work self-contained, we first present the formulation of the tim…

Switchbacks near Boundaries of Small-scale Magnetic Flux Ropes in the Young Solar Wind from Parker Solar Probe Observations
Kyung-Eun Choi, Oleksiy V. Agapitov, Dae-Young Lee, Forrest Mozer, Jia Huang, Lucas Colomban, Jaye L. Verniero, Nour Raouafi
https://arxiv.org/abs/2506.08278

Switchbacks near Boundaries of Small-scale Magnetic Flux Ropes in the Young Solar Wind from Parker Solar Probe Observations
The Parker Solar Probe (PSP) mission has revealed frequent occurrences of switchbacks (SBs) and small-scale magnetic flux ropes (SMFRs) as prominent structures within the solar wind. These mesoscale features are observed across all heliocentric distances, with heightened activity in the young solar wind, such as successive SMFRs, blobs, and SBs using PSP in situ observations. One study, in particular, focuses on SMFRs observed during the intervals of PSP co-rotating with the Sun, which suggests…

SonicRadiation: A Hybrid Numerical Solution for Sound Radiation without Ghost Cells
Xutong Jin, Guoping Wang, Sheng Li
https://arxiv.org/abs/2508.08775 https://

SonicRadiation: A Hybrid Numerical Solution for Sound Radiation without Ghost Cells
Interactive synthesis of physical sound effects is crucial in digital media production. Sound radiation simulation, a key component of physically based sound synthesis, has posed challenges in the context of complex object boundaries. Previous methods, such as ghost cell-based finite-difference time-domain (FDTD) wave solver, have struggled to address these challenges, leading to large errors and failures in complex boundaries because of the limitation of ghost cells. We present SonicRadiation,…

Engineering teams often get stuck striving for perfection, not out of laziness, but due to an insatiable desire to improve. Join Tim Schmolka next week at Berlin Buzzwords to discover how teams can overcome perfectionism. He will discuss the significance of setting clear boundaries, balancing quality with timely delivery, and focusing on what truly matters.
Learn more:

The Perfection Trap
Many engineering teams face a common struggle: the desire to deliver perfect solutions can delay projects and limit business impact. This session explores how the familiar Parkinson’s Law is often misunderstood in engineering contexts. Instead of laziness, it’s excessive craftsmanship and relentless perfectionism that extend timelines. Through real-world examples and practical insights, you’ll learn about the “perfection pressure spectrum,” which helps diagnose whether your team is st…

The Baby Universe is Fine and the CFT Knows It: On Holography for Closed Universes
Stefano Antonini, Pratik Rath, Martin Sasieta, Brian Swingle, Alejandro Vilar L\'opez
https://arxiv.org/abs/2507.10649

The Baby Universe is Fine and the CFT Knows It: On Holography for Closed Universes
Big bang/big crunch closed universes can be realized in AdS/CFT, even though they lack asymptotically AdS boundaries. With enough bulk entanglement, the bulk Hilbert space of a closed universe can be holographically encoded in the CFT. We clarify the relation of this encoding to observer-clone proposals and refute recent arguments about the breakdown of semiclassical physics in such spaces. In the limit of no bulk entanglement, the holographic encoding breaks down. The oft-cited one-dimensional…

Geometric Theory of Ising Machines
Andrew G. Moore, Zachary Richey, Isaac K. Martin
https://arxiv.org/abs/2507.12626 https://arxiv.or…

Geometric Theory of Ising Machines
We contribute to the mathematical theory of the design of low temperature Ising machines, a type of experimental probabilistic computing device implementing the Ising model. Encoding the output of a function in the ground state of a physical system allows efficient and distributed computation, but the design of the energy function is a difficult puzzle. We introduce a diagrammatic device that allows us to visualize the decision boundaries for Ising circuits. It is then used to prove two results…

On Shilov boundaries, Rees valuations and integral extensions
Dimitri Dine
https://arxiv.org/abs/2507.07091 https://arxiv.org/pdf/250…

On Shilov boundaries, Rees valuations and integral extensions
We explore an analogy between, on one hand, the notions of integral closure of ideals and Rees valuations in commutative algebra and, on the other hand, the notions of spectral seminorm and Shilov boundary in nonarchimedean geometry. For any Tate ring $\mathcal{A}$ with a Noetherian ring of definition $\mathcal{A}_{0}$ and pseudo-uniformizer $\varpi\in\mathcal{A}_{0}$, we prove that the Shilov boundary for $\mathcal{A}$ naturally coincides with the set of Rees valuation rings of the principal i…

Invariant measures on the transversal hull of cone semigroups and some applications
Danilo Polo Ojito, Emil Prodan, Tom Stoiber
https://arxiv.org/abs/2507.06757

Invariant measures on the transversal hull of cone semigroups and some applications
Let $\LL_{\bf v}\subset \Z^D$ be a suitable cone semigroup and $\A_{\bf v}$ its reduced semigroup $C^*$-algebra. In this paper, we compute the $\LL_{\bf v}$-invariant measures in the transversal hull of the semigroup $\LL_{\bf v}$ that exhibit regularity in the boundaries of $\LL_{\bf v}.$ These measures enable the construction of a trace per-unit hypersurface for observables in $\A_{\bf v}$ supported near the boundaries of $\LL_{\bf v}$, leading to the construction of appropriate Chern cocycle…

The real question is why is a fucking sociopath allowed to teach a class at a university? Oh, it’s Stanford. As you were. https://mastodon.social/@RuthMalan/113022749498944409

Three-dimensional SPH modeling of brittle fracture under hydrodynamic loading
Vishabjeet Singh, Chong Peng, Md Rushdie Ibne Islam
https://arxiv.org/abs/2507.10553

Three-dimensional SPH modeling of brittle fracture under hydrodynamic loading
A three-dimensional SPH computational framework is presented for modeling fluid-structure interactions with structural deformation and failure. We combine weakly compressible SPH with a pseudo-spring-based SPH solver to capture the fluid flow and deformable structures. A unified modeling approach captures the solid boundaries and fluid-structure interfaces without penalty-based contact force. The $δ$-SPH technique improves the pressure calculations in the fluid phase, while structural damage i…

The DKU System for Multi-Speaker Automatic Speech Recognition in MLC-SLM Challenge
Yuke Lin, Ming Cheng, Ze Li, Ming Li
https://arxiv.org/abs/2507.09499 ht…

The DKU System for Multi-Speaker Automatic Speech Recognition in MLC-SLM Challenge
We present the DKU system for Task 2 of the MLC-SLM Challenge, which aims to perform multi-speaker automatic speech recognition directly from raw audio without Oracle speaker labels or time boundaries. Our approach builds upon a diarization-aware framework integrating speaker embeddings and temporal utterance boundaries into a Qwen2.5-based large language model (LLM). Then, we enhance the system's multilingual performance by fine-tuning language-specific adapters and LoRA modules within the LLM…

"If any of the work, that any of us do, contributes to the stretching of culture, the stretching of boundaries of empathy that’s expected of an audience… that’s the holy grail."
-Riz Ahmed
#acting #coaching

Stochastic Boundaries in Spatial General Equilibrium: A Diffusion-Based Approach to Causal Inference with Spillover Effects
Tatsuru Kikuchi
https://arxiv.org/abs/2508.06594 http…

Stochastic Boundaries in Spatial General Equilibrium: A Diffusion-Based Approach to Causal Inference with Spillover Effects
This paper introduces a novel framework for causal inference in spatial economics that explicitly models the stochastic transition from partial to general equilibrium effects. We develop a Denoising Diffusion Probabilistic Model (DDPM) integrated with boundary detection methods from stochastic process theory to identify when and how treatment effects propagate beyond local markets. Our approach treats the evolution of spatial spillovers as a Lévy process with jump-diffusion dynamics, where the…

Poisson-type problems with transmission conditions at boundaries of infinite metric trees
Maryna Kachanovska, Kiyan Naderi, Konstantin Pankrashkin
https://arxiv.org/abs/2506.11218

Poisson-type problems with transmission conditions at boundaries of infinite metric trees
The paper introduces a Poisson-type problem on a mixed-dimensional structure combining a Euclidean domain and a lower-dimensional self-similar component touching a compact surface (interface). The lower-dimensional piece is a so-called infinite metric tree (one-dimensional branching structure), and the key ingredient of the study is a rigorous definition of the gluing conditions between the two components. These constructions are based on the recent concept of embedded trace maps and some abstr…

Fortune told staff that former editor Nick Lichtenberg was returning to "test ways to use AI to deliver breaking news faster" via a Fortune Intelligence section (Semafor)
https://www.semafor.com/article/07/06/2025/fortune-and-axios-warm-to-ai

Fortune and Axios warm to AI
Media companies are continuing to push the boundaries of how they’re using AI.

The use of open boundaries in stochastic hydrodynamic models of nucleation
James F. Lutsko
https://arxiv.org/abs/2508.05528 https://arxiv.org/pdf/2508.0552…

The use of open boundaries in stochastic hydrodynamic models of nucleation
Stochastic hydrodynamics is a central tool in the study of first order phase transitions at a fundamental level. Combined with sophisticated free energy models, e.g. as developed in classical Density Functional Theory, complex processes such as crystallization can be modeled and information such as free energy barriers, nucleation pathways and the unstable eigenvector and eigenvalues determined. The latter are particularly interesting as they play key roles in defining the natural (unbiased) or…

Strong "Satan's Boundaries Unchained" incoming... 🤩
#ThrashMetal

Quantum stress-energy at timelike boundaries: testing a new beyond-$\Lambda$CDM parameter with cosmological data
Oliver H. E. Philcox, Eva Silverstein, Gonzalo Torroba
https://arxiv.org/abs/2507.00115

Quantum stress-energy at timelike boundaries: testing a new beyond-$Λ$CDM parameter with cosmological data
We analyze the basic cosmological effects of a population of timelike boundaries -- a form of nontrivial spacetime topology -- containing a boundary layer of quantum stress energy. This accumulation of vacuum fluctuations of quantum fields can be consistently negative and UV sensitive, providing an additional source of cosmic energy density strong enough to compete with matter and dark energy. For boundary conditions enabling a solution with fixed comoving boundary size, this effect contributes…

A Conceptual Framework for Requirements Engineering of Pretrained-Model-Enabled Systems
Dongming Jin, Zhi Jin, Linyu Li, Xiaohong Chen
https://arxiv.org/abs/2507.13095

A Conceptual Framework for Requirements Engineering of Pretrained-Model-Enabled Systems
Recent advances in large pretrained models have led to their widespread integration as core components in modern software systems. The trend is expected to continue in the foreseeable future. Unlike traditional software systems governed by deterministic logic, systems powered by pretrained models exhibit distinctive and emergent characteristics, such as ambiguous capability boundaries, context-dependent behavior, and continuous evolution. These properties fundamentally challenge long-standing a…

Bicriteria Polygon Aggregation with Arbitrary Shapes
Lotte Blank, David Eppstein, Jan-Henrik Haunert, Herman Haverkort, Benedikt Kolbe, Philip Mayer, Petra Mutzel, Alexander Naumann, Jonas Sauer
https://arxiv.org/abs/2507.11212

Bicriteria Polygon Aggregation with Arbitrary Shapes
We study the problem of aggregating polygons by covering them with disjoint representative regions, thereby inducing a clustering of the polygons. Our objective is to minimize a weighted sum of the total area and the total perimeter of the regions. This problem has applications in cartographic map generalization and urban analytics. Here, the polygons represent building footprints and the clusters may represent urban areas. Previous approaches forced the boundaries of the regions to come from a…

MS-UMamba: An Improved Vision Mamba Unet for Fetal Abdominal Medical Image Segmentation
Caixu Xu, Junming Wei, Huizhen Chen, Pengchen Liang, Bocheng Liang, Ying Tan, Xintong Wei
https://arxiv.org/abs/2506.12441

MS-UMamba: An Improved Vision Mamba Unet for Fetal Abdominal Medical Image Segmentation
Recently, Mamba-based methods have become popular in medical image segmentation due to their lightweight design and long-range dependency modeling capabilities. However, current segmentation methods frequently encounter challenges in fetal ultrasound images, such as enclosed anatomical structures, blurred boundaries, and small anatomical structures. To address the need for balancing local feature extraction and global context modeling, we propose MS-UMamba, a novel hybrid convolutional-mamba mo…

From Variability To Accuracy: Conditional Bernoulli Diffusion Models with Consensus-Driven Correction for Thin Structure Segmentation
Jinseo An, Min Jin Lee, Kyu Won Shim, Helen Hong
https://arxiv.org/abs/2507.12985

From Variability To Accuracy: Conditional Bernoulli Diffusion Models with Consensus-Driven Correction for Thin Structure Segmentation
Accurate segmentation of orbital bones in facial computed tomography (CT) images is essential for the creation of customized implants for reconstruction of defected orbital bones, particularly challenging due to the ambiguous boundaries and thin structures such as the orbital medial wall and orbital floor. In these ambiguous regions, existing segmentation approaches often output disconnected or under-segmented results. We propose a novel framework that corrects segmentation results by leveragin…

Regular Rotating Black Hole: Probing the boundaries of the Radiative Signatures and Jet Power
Subhadip Sau, John W. Moffat
https://arxiv.org/abs/2508.03473 https://

Regular Rotating Black Hole: Probing the boundaries of the Radiative Signatures and Jet Power
We perform a detailed observational analysis of several galactic X-ray binaries, focusing on the interplay between black hole spin, jet power, and radiative efficiency within the context of Blandford-Znajek-powered jets. Using updated measurements from continuum fitting and Fe-line methods, we constrain the spin parameter a and the deviation parameter $β$ for five key black hole systems: H1743-322, XTE J1550-564, GRS 1124-683, GRO J1655-40, and GRS 1915+105. For each system, we compare the all…

exhibit A / exhibit B
am i delirious or does this PHY just... not comply with the RMII spec??

I think this is a good call!
”The presence of Expert Generalists crossing the competency boundaries can also increase knowledge transfer between competency groups, increasing everyone's sympathy for related domains. This mechanism also encourages specialists to explore the Expert Generalist skill for themselves.”
https://

Expert Generalists
Being an Expert Generalist should be treated as a first-class skill, one that can be assessed and taught.

Fabrication of microstructured devices of the unconventional superconductor CeCoIn5 for investigations of isolated grain boundaries
Sanu Mishra, Sean M. Thomas, Rod Mccabe, Eric D. Bauer, Filip Ronning
https://arxiv.org/abs/2507.22238

Fabrication of microstructured devices of the unconventional superconductor CeCoIn5 for investigations of isolated grain boundaries
Grain boundaries are critical for determining the functionality of polycrystalline materials. Here we present on the structural $\&$ transport properties of grain boundaries in the unconventional superconductor CeCoIn$_5$. We provide a detailed recipe for the fabrication of isolated grain boundary devices from of as-grown polycrystalline samples of CeCoIn$_5$. Electron backscattered diffraction imaging of polycrystalline CeCoIn$_5$ samples reveals an abundance of $90^\circ$ misorientation grain…

Enter, Exit, Page Fault, Leak: Testing Isolation Boundaries for Microarchitectural Leaks
Oleksii Oleksenko, Flavien Solt, C\'edric Fournet, Jana Hofmann, Boris K\"opf, Stavros Volos
https://arxiv.org/abs/2507.06039

Enter, Exit, Page Fault, Leak: Testing Isolation Boundaries for Microarchitectural Leaks
CPUs provide isolation mechanisms like virtualization and privilege levels to protect software. Yet these focus on architectural isolation while typically overlooking microarchitectural side channels, exemplified by Meltdown and Foreshadow. Software must therefore supplement architectural defenses with ad-hoc microarchitectural patches, which are constantly evolving as new attacks emerge and defenses are proposed. Such reactive approach makes ensuring complete isolation a daunting task, and lea…

Reliable high-accuracy error mitigation for utility-scale quantum circuits
Dorit Aharonov, Ori Alberton, Itai Arad, Yosi Atia, Eyal Bairey, Matan Ben Dov, Asaf Berkovitch, Zvika Brakerski, Itsik Cohen, Eran Fuchs, Omri Golan, Or Golan, Barak D. Gur, Ilya Gurwich, Avieli Haber, Rotem Haber, Dorri Halbertal, Yaron Itkin, Barak A. Katzir, Oded Kenneth, Shlomi Kotler, Roei Levi, Eyal Leviatan, Yotam Y. Lifshitz, Adi Ludmer, Shlomi Matityahu, Ron Aharon Melcer, Adiel Meyer, Omrie Ovdat, Avi…

Reliable high-accuracy error mitigation for utility-scale quantum circuits
Error mitigation is essential for unlocking the full potential of quantum algorithms and accelerating the timeline toward quantum advantage. As quantum hardware progresses to push the boundaries of classical simulation, efficient and robust error mitigation methods are becoming increasingly important for producing accurate and reliable outputs. We introduce QESEM, a reliable, high-accuracy, characterization-based software implementing efficient, unbiased quasi-probabilistic error mitigation. We…

Stability of lattice Boltzmann schemes for initial boundary value problems in raw formulation
Thomas Bellotti (EM2C)
https://arxiv.org/abs/2507.13108 https…

Stability of lattice Boltzmann schemes for initial boundary value problems in raw formulation
We study the stability of one-dimensional linear scalar lattice Boltzmann schemes for hyperbolic equations with respect to boundary data. Our approach is based on the original raw algorithm on several unknowns, thereby avoiding the need for a transformation into an equivalent scalar formulation-a challenging process in presence of boundaries. To address different behaviors exhibited by the numerical scheme, we introduce appropriate notions of strong stability. They account for the potential abs…

Finslerian lightconvex boundaries: applications to causal simplicity and the space of cone geodesics $\mathcal{N}$
J\'onatan Herrera, Miguel S\'anchez
https://arxiv.org/abs/2506.09032

Finslerian lightconvex boundaries: applications to causal simplicity and the space of cone geodesics $\mathcal{N}$
Our outcome is structured in the following sequence: (1) a general result for indefinite Finslerian manifolds with boundary $(M,L)$ showing the equivalence between local and infinitesimal (time, light or space) convexities for the boundary $\partial M$, (2) for any cone structure $(M,\mathcal{C})$ which is globally hyperbolic with timelike boundary, the equivalence among: (a) the boundary $\partial M$ is lightconvex, (b) the interior $\mathring{M}$ is causally simple and (c) the space of the co…

An eco-friendly universal strategy via ribavirin to achieve highly efficient and stable perovskite solar cells
Xianhu Wu, Gaojie Xia, Guanglei Cui, Jieyu Bi, Nian Liu, Jiaxin Jiang, Jilong Sun, Luyang Liu, Ping Li, Ning Lu, Zewen Zuo, Min Gu
https://arxiv.org/abs/2507.10557

An eco-friendly universal strategy via ribavirin to achieve highly efficient and stable perovskite solar cells
The grain boundaries of perovskite films prepared by the solution method are highly disordered, with a large number of defects existing at the grain boundaries. These defect sites promote the decomposition of perovskite. Here, we use ribavirin obtained through bacillus subtilis fermentation to regulate the crystal growth of perovskite, inducing changes in the work function and energy level structure of perovskite, which significantly reduces the defect density. Based on density functional theor…

Evaluation of Analytical Turbulence Closures for Quasi-Geostrophic Ocean Flows with Coastal Boundaries
Anantha Narayanan Suresh Babu, Akhil Sadam, Pierre F. J. Lermusiaux
https://arxiv.org/abs/2508.06678

Evaluation of Analytical Turbulence Closures for Quasi-Geostrophic Ocean Flows with Coastal Boundaries
Numerical turbulence simulations typically involve parameterizations such as Large Eddy Simulations (LES). Applications to geophysical flows, especially ocean flows, are further complicated by the presence of complex topography and interior landforms such as coastlines, islands, and capes. In this work, we extend pseudo-spectral quasi-geostrophic (QG) numerical schemes and GPU-based solvers to simulate flows with coastal boundaries using the Brinkman volume penalization approach. We incorporate…

Efficient Image-to-Image Schr\"odinger Bridge for CT Field of View Extension
Zhenhao Li, Long Yang, Xiaojie Yin, Haijun Yu, Jiazhou Wang, Hongbin Han, Weigang Hu, Yixing Huang
https://arxiv.org/abs/2508.11211

Efficient Image-to-Image Schrödinger Bridge for CT Field of View Extension
Computed tomography (CT) is a cornerstone imaging modality for non-invasive, high-resolution visualization of internal anatomical structures. However, when the scanned object exceeds the scanner's field of view (FOV), projection data are truncated, resulting in incomplete reconstructions and pronounced artifacts near FOV boundaries. Conventional reconstruction algorithms struggle to recover accurate anatomy from such data, limiting clinical reliability. Deep learning approaches have been explor…

Super LiDAR Reflectance for Robotic Perception
Wei Gao, Jie Zhang, Mingle Zhao, Zhiyuan Zhang, Shu Kong, Maani Ghaffari, Dezhen Song, Cheng-Zhong Xu, Hui Kong
https://arxiv.org/abs/2508.10398

Super LiDAR Reflectance for Robotic Perception
Conventionally, human intuition often defines vision as a modality of passive optical sensing, while active optical sensing is typically regarded as measuring rather than the default modality of vision. However, the situation now changes: sensor technologies and data-driven paradigms empower active optical sensing to redefine the boundaries of vision, ushering in a new era of active vision. Light Detection and Ranging (LiDAR) sensors capture reflectance from object surfaces, which remains invar…

Texas House Speaker Dustin Burrows sent a communication to House reps that payroll direct deposits are suspended until a quorum is reached.
The Democrats who fled the state did so specifically to prevent a quorum from being reached in order to block MAGA Republicans from advancing their plan to gerrymander new congressional district boundaries

Surface Waves at Switchback Boundaries in the Young Solar Wind from Parker Solar Probe Observations
Kyung-Eun Choi, Oleksiy V. Agapitov, Nina Bizien, Thierry Dudok De Wit, Lucas Colomban
https://arxiv.org/abs/2507.01252

Surface Waves at Switchback Boundaries in the Young Solar Wind from Parker Solar Probe Observations
Switchbacks (SBs) are localized magnetic field deflections in the solar wind, marked by abrupt changes in the magnetic field direction relative to the ambient solar wind. Observations onboard Parker Solar Probe (PSP) at heliocentric distances below 50 Solar Radii (Rs) showed that within SBs, perturbations in the magnetic field (ΔB) and the bulk solar wind velocity (ΔV) align, i.e., ΔB~ΔV, producing enhanced radial velocity spikes. In this study, we examine the characteristics of SB boundari…

CFP - Australian Association for Jewish Studies Annual Conference - 8-9 February 2026
https://ift.tt/sv9tIJm
University of Alaska - Fairbanks - Alaska & Polar Regions Area Studies Bibliographer & Curator of…
via Input 4 RELCFP

"If any of the work, that any of us do, contributes to the stretching of culture, the stretching of boundaries of empathy that’s expected of an audience… that’s the holy grail."
-Riz Ahmed
#acting #coaching

Causal Negative Sampling via Diffusion Model for Out-of-Distribution Recommendation
Chu Zhao, Eneng Yang, Yizhou Dang, Jianzhe Zhao, Guibing Guo, Xingwei Wang
https://arxiv.org/abs/2508.07243

Causal Negative Sampling via Diffusion Model for Out-of-Distribution Recommendation
Heuristic negative sampling enhances recommendation performance by selecting negative samples of varying hardness levels from predefined candidate pools to guide the model toward learning more accurate decision boundaries. However, our empirical and theoretical analyses reveal that unobserved environmental confounders (e.g., exposure or popularity biases) in candidate pools may cause heuristic sampling methods to introduce false hard negatives (FHNS). These misleading samples can encourage the …

Large-scale distributed synchronization systems, using a cancel-on-completion redundancy mechanism
Alexander Stolyar
https://arxiv.org/abs/2507.11779 https…

Large-scale distributed synchronization systems, using a cancel-on-completion redundancy mechanism
We consider a class of multi-agent distributed synchronization systems, which are modeled as $n$ particles moving on the real line. This class generalizes the model of a multi-server queueing system, considered in [15], employing so-called cancel-on-completion (c.o.c.) redundancy mechanism, but is motivated by other applications as well. The model in [15] is a particle system, regulated at the left boundary point. The more general model of this paper is such that we allow regulation boundaries …

ICT Within Limits Is Bound To Be Old-Fashioned By Design
Olivier Michel, Emilie Frenkiel
https://arxiv.org/abs/2508.08311 https://arxiv.org/pdf/2508.08311

ICT Within Limits Is Bound To Be Old-Fashioned By Design
Crossing multiple planetary boundaries places us in a zone of uncertainty that is characterized by considerable fluctuations in climatic events. The situation is exacerbated by the relentless use of resources and energy required to develop digital infrastructures that have become pervasive and ubiquitous. We are bound to these infrastructures, dead technologies and negative commons, just as much as they bind us. Although their growth threatens the necessary reduction of our impact, we have a re…

Very high-order accurate finite volume scheme for the streamfunction-vorticity formulation of incompressible fluid flows with polygonal meshes on arbitrary curved boundaries
Ricardo Costa (Institute for Polymers and Composites, University of Minho, Azur\'em Campus, 4804-058 Guimar\~aes, Portugal, Department of Polymer Engineering, University of Minho, Azur\'em Campus, 4804-058 Guimar\~aes, Portugal), St\'ephane Clain (Centre of Mathematics, University of Coimbra, 3000-143 C…

Very high-order accurate finite volume scheme for the streamfunction-vorticity formulation of incompressible fluid flows with polygonal meshes on arbitrary curved boundaries
Conventional mathematical models for simulating incompressible fluid flow problems are based on the Navier-Stokes equations expressed in terms of pressure and velocity. In this context, pressure-velocity coupling is a key issue, and countless numerical techniques and methods have been developed over the decades to solve these equations efficiently and accurately. In two dimensions, an alternative approach is to rewrite the Navier-Stokes equations regarding two scalar quantities: the streamfunct…

Extremal curves in single-trace $T\bar{T}$-holography
Soumangsu Chakraborty, Madhur Mehta, Gela Patashuri
https://arxiv.org/abs/2508.09990 https://arxiv.or…

Extremal curves in single-trace $T\bar{T}$-holography
In this paper, we continue the study of single-trace $T\bar{T}$-holography where the boundary field theory can be realized as a CFT$_2$ deformed by a single-trace irrelevant operator of dimension $(2,2)$ and dual spacetime geometry is $AdS_3$ smoothly glued to flat spacetime with a linear dilaton near the boundary. In this non-AdS holographic framework, we propose that the length of real extremal curves connecting the two boundaries of an eternal black hole at fixed boundary time captures the t…

A Systematization of Security Vulnerabilities in Computer Use Agents
Daniel Jones, Giorgio Severi, Martin Pouliot, Gary Lopez, Joris de Gruyter, Santiago Zanella-Beguelin, Justin Song, Blake Bullwinkel, Pamela Cortez, Amanda Minnich
https://arxiv.org/abs/2507.05445

A Systematization of Security Vulnerabilities in Computer Use Agents
Computer Use Agents (CUAs), autonomous systems that interact with software interfaces via browsers or virtual machines, are rapidly being deployed in consumer and enterprise environments. These agents introduce novel attack surfaces and trust boundaries that are not captured by traditional threat models. Despite their growing capabilities, the security boundaries of CUAs remain poorly understood. In this paper, we conduct a systematic threat analysis and testing of real-world CUAs under adversa…

An optimal class of domains permitting inner boundaries in a divergence theorem for rough integrands
Thomas Ruf
https://arxiv.org/abs/2506.09978 https://…

An optimal class of domains permitting inner boundaries in a divergence theorem for rough integrands
The divergence theorem on an open domain $U \subset \mathbb{R}^m$ of finite measure is investigated for the rough class $\mathcal{DM}_\infty(U)$ of bounded vector fields $u \, \colon \, U \to \mathbb{R}^m$ with a finite Radon measure divergence. Let $\mathcal{DB}(U)$ denote the closure of $\mathcal{DM}_\infty(U)$ in the Lebesgue space $L_\infty(U)$. Equivalent conditions are proved for the domain $U$ to admit the divergence theorem \begin{equation} \exists ! \ell \in \mathcal{DB}'(U) \, \colon …

It is the fight Trump had been dreaming about,
a showdown with a top political rival in a deep blue state over an issue core to his political agenda.
In bypassing the authority of Gov. Gavin Newsom of California, a Democrat,
to call in the National Guard to quell protests in the Los Angeles area over his administration’s efforts to deport more migrants,
Trump is now pushing the boundaries of presidential authority and stoking criticism that he is inflaming the situation…

Trump Jumps at the Chance for a Confrontation in California Over Immigration
The situation has all the elements that the president seeks: a showdown with a top political rival in a deep blue state over an issue core to his agenda.

Versatile SPH Open Boundary Conditions for Multiphase Flows in Extreme Condition
Zi-Yang Zhan, Zhen Chen
https://arxiv.org/abs/2506.14500 https://

Versatile SPH Open Boundary Conditions for Multiphase Flows in Extreme Condition
Although the Smoothed Particle Hydrodynamics (SPH) method has been demonstrated as a promising numerical solver for multiphase flow problems due to its Lagrangian nature, its application to complex channel flow may encounter additional issues such as the open boundary condition and numerical instability in the extreme flow state. The present work aims to establish a general SPH algorithm for accurate and stable simulation of complex multiphase flows in configurations with open boundaries. The g…

Faceting transition in aluminum as a grain boundary phase transition
Yoonji Choi, Tobias Brink
https://arxiv.org/abs/2506.13550 https://

Faceting transition in aluminum as a grain boundary phase transition
Grain boundaries facet due to anisotropic grain boundary energies: While the faceted boundary has a larger area than the corresponding straight boundary, a significantly lower energy of the facets compared to a straight segment can drive the faceting. This picture is complicated by faceting/defaceting transitions where the free energy difference between the two states depends on the temperature. Here, we use atomistic computer simulations to show how such a transition in a $Σ3$ $[11\overline{1…

From Hard Refusals to Safe-Completions: Toward Output-Centric Safety Training
Yuan Yuan, Tina Sriskandarajah, Anna-Luisa Brakman, Alec Helyar, Alex Beutel, Andrea Vallone, Saachi Jain
https://arxiv.org/abs/2508.09224

From Hard Refusals to Safe-Completions: Toward Output-Centric Safety Training
Large Language Models used in ChatGPT have traditionally been trained to learn a refusal boundary: depending on the user's intent, the model is taught to either fully comply or outright refuse. While this is a strong mitigation for explicitly malicious prompts, focusing safety training on refusals can lead to brittleness for prompts with obscured user intent. Binary refusal boundaries are especially ill-suited for dual-use cases (such as biology or cybersecurity), where a user request can be an…

Boundary-induced Phases in the Dissipative Dicke Lattice Model
Peng-Fei Wei, Yilun Xu, Fengxiao Sun, Qiongyi He, Peter Rabl, Zhihai Wang
https://arxiv.org/abs/2508.10296 https:/…

Boundary-induced Phases in the Dissipative Dicke Lattice Model
The superradiant phase transition in the dissipative Dicke lattice model, driven by on-site collective atom-photon interactions and inter-site photon hopping, is a cornerstone of nonequilibrium quantum many-body physics. However, little is still known about the influence of boundaries in experimental achievable systems of finite size. Here we investigate the dissipative superradiant phase transition in the Dicke lattice model with a small number of sites and reveal a striking sensitivity of thi…

Asymptotic behavior of complete conformal metric near singular boundary
Weiming Shen, Yue Wang
https://arxiv.org/abs/2506.04591 https://

Asymptotic behavior of complete conformal metric near singular boundary
The boundary behavior of the singular Yamabe problem has been extensively studied near sufficiently smooth boundaries, while less is known about the asymptotic behavior of solutions near singular boundaries. In this paper, we study the asymptotic behaviors of solutions to the singular Yamabe problem with negative constant scalar curvature near singular boundaries and derive the optimal estimates for the background metric which is not necessarily conformally flat. In particular, we prove that th…

A features-embedded-learning immersed boundary model for large-eddy simulation of turbulent flows with complex boundaries
Zhideng Zhou, Fengshun Zhang, Xiaolei Yang
https://arxiv.org/abs/2506.21985

A features-embedded-learning immersed boundary model for large-eddy simulation of turbulent flows with complex boundaries
The hybrid wall-modeled large-eddy simulation (WMLES) and immersed boundary (IB) method offers significant flexibility for simulating high Reynolds number flows involving complex boundaries. However, the approximate boundary conditions (e.g., the wall shear stress boundary condition) developed for body-fitted grids in the literature are not directly applicable to IB methods. In this work, we propose a features-embedded-learning-IB (FEL-IB) wall model to approximate IB boundaries in the hybrid W…

Quenching of excitons at grain boundaries in C60 thin films
Rysa Greenwood, Bradley G. Guislain, MengXing Na, Alexandra B. Tully, Sergey Zhdanovich, Jerry Icban Dadap, Sydney K. Y. Dufresne, Vanessa King, Jiabin Yu, Giorgio Levy, Arthur K. Mills, Matteo Michiardi, Andrea Damascelli, Sarah A. Burke, David J. Jones
https://arxiv.o…

Quenching of excitons at grain boundaries in C60 thin films
Exciton lifetimes play a critical role in the performance of organic optoelectronic devices. In this work, we investigate how the presence of multiple rotational domains, and therefore grain boundaries, impacts exciton dynamics in thin films of C60/Au(111) using time and angle-resolved photoemission spectroscopy (TR-ARPES). We find that films with multiple rotational domains exhibit shorter exciton lifetimes and evidence of exciton-exciton annihilation, even when one domain predominates. Scanni…

Solid-State Dewetting of Polycrystalline Thin Films: a Phase Field Approach
Paul Hoffrogge, Nils Becker, Daniel Schneider, Britta Nestler, Axel Voigt, Marco Salvalaglio
https://arxiv.org/abs/2507.10811

Solid-State Dewetting of Polycrystalline Thin Films: a Phase Field Approach
Solid-state dewetting (SSD) is the process by which thin solid films break up and retract on a substrate, resulting in the formation of nanostructures and islands. While SSD in single-crystalline films is generally understood as a surface-energy-driven process mediated by surface diffusion, polycrystalline films feature additional complexity due to the presence of grain boundaries. Theoretical investigations and simulation frameworks have mainly focused on single-crystalline SSD. In this work, …