cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
DAHRS: Divergence-Aware Hallucination-Remediated SRL Projection
Creators: name: Youm, Sangpil
name: Mather, Brodie
name: Jayaweera, Chathuri
name: Prada, Juliana
name: Dorr, Bonnie
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Semantic role labeling (SRL) enriches many downstream applications, e.g., machine translation, question answering, summarization, and stance/belief detection. However, building multilingual SRL models is challenging due to the scarcity of semantically annotated corpora for multiple languages. Moreover, state-of-the-art SRL projection (XSRL) based on large language models (LLMs) yields output that is riddled with spurious role labels. Remediation of such hallucinations is not straightforward due to the lack of explainability of LLMs. We show that hallucinated role labels are related to naturally occurring divergence types that interfere with initial alignments. We implement Divergence-Aware Hallucination-Remediated SRL projection (DAHRS), leveraging linguistically-informed alignment remediation followed by greedy First-Come First-Assign (FCFA) SRL projection. DAHRS improves the accuracy of SRL projection without additional transformer-based machinery, beating XSRL in both human and automatic comparisons, and advancing beyond headwords to accommodate phrase-level SRL projection (e.g., EN-FR, EN-ES). Using CoNLL-2009 as our ground truth, we achieve a higher word-level F1 over XSRL: 87.6% vs. 77.3% (EN-FR) and 89.0% vs. 82.7% (EN-ES). Human phrase-level assessments yield 89.1% (EN-FR) and 91.0% (EN-ES). We also define a divergence metric to adapt our approach to other language pairs (e.g., English-Tagalog).
description: 15 pages, 6 figures, Accepted to The 29th International Conference on Natural Language & Information Systems (NLDB 2024)
Die Hölzernen Schreibtafeln Im Imperium Romanum - Ein Inventar
Creators: name: Hartmann, Benjamin
Publisher: name: Zenodo
Year: 2015
Subjects: literacy
classical studies
antiquity
roman history
epigraphy
papyrology
writing material
tabula cerata
tilia
wood
communication
ancient history
history

description: An inventory of finds of wooden writing tablets in the Roman Empire. (in German)

Holztafeln fanden in der römischen Antike weite Verbreitung als Schriftträger. Nichtsdestotrotz sind materielle Überreste von solchen Schreibtafeln bis heute vergleichsweise rar. Dies ist vor allem auf die prekären Überlieferungskonditionen von Holz zurückzuführen. Insbesondere in Mittel- und Westeuropa sowie in Britannien fanden und finden sich bei archäologischen Ausgrabungen in Gebieten mit Feuchtbodenerhaltung dennoch vermehrt hölzerne Schreibtafeln. Das vorliegende kommentierte Inventar der Fundorte von hölzernen Schreibtafeln fasst diese Funde in einer Übersicht zusammen. Aus 63 unterschiedlichen Fundstellen sind zusammen über 2500 Wachstafeln (tabulae ceratae) überliefert. Neun Orte haben zusammen ferner über 1100 der dünneren leaf tablets (tiliae) hervorgebracht. Diese materielle Hinterlassenschaft gibt Einblicke in die vielgestaltigen Ausformungen antiker Schriftlichkeit. Die vielfach auf diesen Schreibtafeln erhaltenen Texte bilden zudem einen unschätzbar wertvollen Fundus zu unterschiedlichsten Aspekten der Geschichte der römischen Antike.
Migration and deformation of a droplet enclosing an active particle
Creators: name: Kawakami, Sho
name: Vlahovska, Petia M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The encapsulation of active particles, such as bacteria or active colloids, inside a droplet gives rise to nontrivial shape dynamics and droplet motility. To understand this behavior, we derive an asymptotic solution for the fluid flow about a deformable droplet containing an active particle, modeled as a Stokes-flow singularity, in the case of small shape distortions. Offsetting of the active particle from the center of the drop breaks symmetry and leads to excitation of large number of shape modes as well as particle and drop displacement. Flows due to common singularity representations of active particles, such as Stokeslets, rotlets, and stresslets, are computed and compared to results for non-deformable droplets enclosing active particles. The effect of interfacial properties is also investigated. Surfactants adsorbed at the droplet interface immobilize the interface and arrest the droplet motion. Our results highlight strategies to steer the flows of active particles and create autonomously navigating containers.
Connivencia, Indiferencia O Resistencia: Viejas Opciones Del Trabajo Profesional Psicológico Ante Nuevas Formas De Opresión Y Explotación
Creators: name: Pavón-Cuéllar, David
Publisher: name: Zenodo
Year: 2016
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Psicología
subject: Capitalismo
subject: Psicología Social
subject: Explotación
subject: Opresión

description: La encrucijada política del psicólogo en la sociedad actual.
Additional file 5 of Graph construction method impacts variation representation and analyses in a bovine super-pangenome
Creators: name: Leonard, Alexander S.
name: Crysnanto, Danang
name: Mapel, Xena M.
name: Bhati, Meenu
name: Pausch, Hubert
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Additional file 5: Table S4. Impact of parameter settings on graph alignment. GraphAligner alignments using relaxed (-x dbg -C 100000 --max-trace-count 5 --seeds-minimizer-ignore-frequent 0.001 --precise-clipping 0.9) or strict (-x vg) alignment parameters. The edit rate and query coverage are taken from a single 500 Kb window in chromosome 12 of the Brown Swiss assembly (start at 60867381), chosen for its complexity and subsequent poor relaxed alignment. CPU time is given in seconds and Memory is peak RAM usage in GB. Strict alignment quickly requires more resources for pggb and becomes prohibitive for cactus for whole chromosome alignment.
EPN906154 Supplemental Material - Supplemental material for Bridging the gap between geographic concept and the data we have: The case of labor markets in the USA
Creators: name: Fowler, Christopher S
name: Jensen, Leif
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: Geography
subject: 120599 Urban and Regional Planning not elsewhere classified
subject: FOS: Social and economic geography

description: Supplemental material, EPN906154 Supplemental Material for Bridging the gap between geographic concept and the data we have: The case of labor markets in the USA by Christopher S Fowler and Leif Jensen in Environment and Planning A: Economy and Space
title: Investigating the role of institutional pressures in the formation of an emerging institutional field: case of the fintech industry in Ghana
Creators: name: Baba, Melissa Selley Akosua
Publisher: name: University of Reading
Year: 2029

description: Fintech companies have become significant players in the financial services industry
through the release of innovative and disruptive technologies. They enjoy increasing success
locally and globally by delivering new forms of financial products and services. Despite the
commercial, economic, and social success of fintech companies, there are few studies of
fintech as a field. This has led to calls for a new type of research focus where fintech is studied
as an emerging institutional field.
This research tested the hypothesis that fintech companies have evolved from disparate
organisations into an institutional field which is separate from the traditional financial services
institutional field. I conducted an empirical interpretive qualitative case study in Ghana with
41 participants from 14 fintech companies, regulators, and associations. Employing
institutional theory, I addressed the role of institutional pressures in transitioning
heterogeneous fintech companies into a homogenous institutional field. Then I highlighted
how the emerging fintech field is becoming embedded in society through the processes of
deinstitutionalisation and institutionalisation.
The findings explicate how coercive, mimetic, and normative pressures on fintech
actors, and the wider financial services field contributed to the evolution of the fintech field.
The findings link the responses of fintech companies to the creation of structure, identity, and
values for the fintech field. Finally, the findings demonstrate how fintech companies use
technology mediated practices to embed the field into social life.
Investigating shocking events in the Ethereum stablecoin ecosystem through temporal multilayer graph structure
Creators: name: Ba, Cheick Tidiane
name: Clegg, Richard G.
name: Steer, Ben A.
name: Zignani, Matteo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: In the dynamic landscape of the Web, we are witnessing the emergence of the Web3 paradigm, which dictates that platforms should rely on blockchain technology and cryptocurrencies to sustain themselves and their profitability. Cryptocurrencies are characterised by high market volatility and susceptibility to substantial crashes, issues that require temporal analysis methodologies able to tackle the high temporal resolution, heterogeneity and scale of blockchain data. While existing research attempts to analyse crash events, fundamental questions persist regarding the optimal time scale for analysis, differentiation between long-term and short-term trends, and the identification and characterisation of shock events within these decentralised systems. This paper addresses these issues by examining cryptocurrencies traded on the Ethereum blockchain, with a spotlight on the crash of the stablecoin TerraUSD and the currency LUNA designed to stabilise it. Utilising complex network analysis and a multi-layer temporal graph allows the study of the correlations between the layers representing the currencies and system evolution across diverse time scales. The investigation sheds light on the strong interconnections among stablecoins pre-crash and the significant post-crash transformations. We identify anomalous signals before, during, and after the collapse, emphasising their impact on graph structure metrics and user movement across layers. This paper pioneers temporal, cross-chain graph analysis to explore a cryptocurrency collapse. It emphasises the importance of temporal analysis for studies on web-derived data and how graph-based analysis can enhance traditional econometric results. Overall, this research carries implications beyond its field, for example for regulatory agencies aiming to safeguard users from shocks and monitor investment risks for citizens and clients.
description: To appear Transactions on Web
LUP908932 Supplemental Material - Supplemental material for Evolving phenotype of systemic lupus erythematosus in Caucasians: low incidence of lupus nephritis, high burden of neuropsychiatric disease and increased rates of late-onset lupus in the ‘Attikon’ cohort
Creators: name: D Nikolopoulos
name: M Kostopoulou
name: A Pieta
name: T Karageorgas
name: D Tseronis
name: K Chavatza
name: S Flouda
name: P Rapsomaniki
name: A Banos
name: E Kremasmenou
name: V Tzavara
name: P Katsimbri
name: A Fanouriakis
name: D T Boumpas
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: 111702 Aged Health Care
subject: FOS: Health sciences

description: Supplemental material, LUP908932 Supplemental Material for Evolving phenotype of systemic lupus erythematosus in Caucasians: low incidence of lupus nephritis, high burden of neuropsychiatric disease and increased rates of late-onset lupus in the ‘Attikon’ cohort by D Nikolopoulos, M Kostopoulou, A Pieta, T Karageorgas, D Tseronis, K Chavatza, S Flouda, P Rapsomaniki, A Banos, E Kremasmenou, V Tzavara, P Katsimbri, A Fanouriakis and D T Boumpas in Lupus
Additional file 2 of Graph construction method impacts variation representation and analyses in a bovine super-pangenome
Creators: name: Leonard, Alexander S.
name: Crysnanto, Danang
name: Mapel, Xena M.
name: Bhati, Meenu
name: Pausch, Hubert
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Additional file 2: Table S1. Compute resources for pangenome deconstruction. Cumulative CPU hours and maximum memory needed for vg deconstruct and the number of variants recovered for the three pangenomes.
Strictly outer actions of locally compact groups: beyond the full factor case
Creators: name: Morando, Basile
Publisher: name: arXiv
Year: 2024
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We show that, given a continuous action $α$ of a locally compact group $G$ on a factor $M$, the relative commutant $M'\cap(M\rtimes_α G)$ is contained in $M\rtimes_α H$ where $H$ is the subgroup of elements acting without spectral gap. As a corollary, we answer a question of Marrakchi and Vaes by showing that if $M$ is semifinite and $α_g$ is not approximately inner for all $g\neq 1$, then $M'\cap (M\rtimes_α G)=\mathbb{C}$.
description: 13 pages
DS_10.1177_0363546520904402 – Supplemental material for Treatment of Pectoralis Major Tendon Tears: A Systematic Review and Meta-analysis of Repair Timing and Fixation Methods
Creators: name: Bodendorfer, Blake M.
name: Wang, David X.
name: McCormick, Brian P.
name: Looney, Austin M.
name: Conroy, Christine M.
name: Fryar, Caroline M.
name: Kotler, Joshua A.
name: Ferris, William J.
name: Postma, William F.
name: Chang, Edward S.
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: 110314 Orthopaedics
subject: FOS: Clinical medicine
subject: 110604 Sports Medicine
subject: FOS: Health sciences
subject: 110323 Surgery

description: Supplemental material, DS_10.1177_0363546520904402 for Treatment of Pectoralis Major Tendon Tears: A Systematic Review and Meta-analysis of Repair Timing and Fixation Methods by Blake M. Bodendorfer, David X. Wang, Brian P. McCormick, Austin M. Looney, Christine M. Conroy, Caroline M. Fryar, Joshua A. Kotler, William J. Ferris, William F. Postma and Edward S. Chang in The American Journal of Sports Medicine
Additional file 3 of Graph construction method impacts variation representation and analyses in a bovine super-pangenome
Creators: name: Leonard, Alexander S.
name: Crysnanto, Danang
name: Mapel, Xena M.
name: Bhati, Meenu
name: Pausch, Hubert
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Additional file 3: Table S2. Assessment of structural variant representation with orthogonal data. Orthogonal optical mapping (OM) and ONT data from relevant breeds/species to assess SV overlap with three pangenomes. Optical mapping generates fewer SV calls, and so only the total number of overlapping SVs are shown. ONT reads generated a comparable number of SVs to the pangenomes, and we can directly calculate an F-score. The Nellore samples are unrelated to the NEL haplotype used in this work, while the remaining data are from the same individual used to generate the assembly.
Supplemental Material, SM_Study_Materials - Community Violence and Prosociality: Experiencing and Committing Violence Predicts Norm-Enforcing Punishment but Not Cooperation
Creators: name: Littman, Rebecca
name: Estrada, Suzanne
name: Stagnaro, Michael Nick
name: Yarrow Dunham
name: Rand, David
name: Baskin-Sommers, Arielle
Publisher: name: SAGE Journals
Year: 2019
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Supplemental Material, SM_Study_Materials for Community Violence and Prosociality: Experiencing and Committing Violence Predicts Norm-Enforcing Punishment but Not Cooperation by Rebecca Littman, Suzanne Estrada, Michael Nick Stagnaro, Yarrow Dunham, David Rand and Arielle Baskin-Sommers in Social Psychological and Personality Science
Fluctuating magnetism and Pomeranchuk effect in multilayer graphene
Creators: name: Holleis, Ludwig
name: Xie, Tian
name: Xu, Siyuan
name: Zhou, Haoxin
name: Patterson, Caitlin L.
name: Panigrahi, Archisman
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Levitov, Leonid S.
name: Jin, Chenhao
name: Berg, Erez
name: Young, Andrea F.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetism typically arises from the effect of exchange interactions on highly localized fermionic wave functions in f- and d-atomic orbitals. In rhombohedral multilayer graphene (RMG), in contrast, magnetism-manifesting as spontaneous polarization into one or more spin and valley flavors[1-7]-originates from itinerant electrons near a Van Hove singularity. Here, we show experimentally that the electronic entropy in this system shows signatures typically associated with disordered local magnetic moments, unexpected for electrons in a fully itinerant metal. Specifically, we find a contribution $Δ$ S $\approx$ 1k$_B$/charge carrier that onsets at the Curie temperature and survives over one order of magnitude in temperature. First order phase transitions show an isospin `Pomeranchuk effect' in which the fluctuating moment phase is entropically favored over the nearby symmetric Fermi liquid[8, 9]. Our results imply that despite the itinerant nature of the electron wave functions, the spin- and valley polarization of individual electrons are decoupled, a phenomenon typically associated with localized moments, as happens, for example, in solid 3He[10]. Transport measurements, surprisingly, show a finite temperature resistance minimum within the fluctuating moment regime, which we attribute to the interplay of fluctuating magnetic moments and electron phonon scattering. Our results highlight the universality of soft isospin modes to two-dimensional flat band systems.
Keypoint Promptable Re-Identification
Creators: name: Somers, Vladimir
name: De Vleeschouwer, Christophe
name: Alahi, Alexandre
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Occluded Person Re-Identification (ReID) is a metric learning task that involves matching occluded individuals based on their appearance. While many studies have tackled occlusions caused by objects, multi-person occlusions remain less explored. In this work, we identify and address a critical challenge overlooked by previous occluded ReID methods: the Multi-Person Ambiguity (MPA) arising when multiple individuals are visible in the same bounding box, making it impossible to determine the intended ReID target among the candidates. Inspired by recent work on prompting in vision, we introduce Keypoint Promptable ReID (KPR), a novel formulation of the ReID problem that explicitly complements the input bounding box with a set of semantic keypoints indicating the intended target. Since promptable re-identification is an unexplored paradigm, existing ReID datasets lack the pixel-level annotations necessary for prompting. To bridge this gap and foster further research on this topic, we introduce Occluded-PoseTrack ReID, a novel ReID dataset with keypoints labels, that features strong inter-person occlusions. Furthermore, we release custom keypoint labels for four popular ReID benchmarks. Experiments on person retrieval, but also on pose tracking, demonstrate that our method systematically surpasses previous state-of-the-art approaches on various occluded scenarios. Our code, dataset and annotations are available at https://github.com/VlSomers/keypoint_promptable_reidentification.
Additional file 9 of A genetic tool to express long fungal biosynthetic genes
Creators: name: Kirchgaessner, Leo
name: Wurlitzer, Jacob M.
name: Seibold, Paula S.
name: Rakhmanov, Malik
name: Gressler, Markus
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 9: Figure S5. Southern Blot analysis for determination of the fwnA deletion and lpaA overexpression in A. niger strains tLK04. A. Schematic representation of the genomic fwnA locus in the strain tLK01 (ATNT∆akuB) and the ∆fwnA::lpaA overexpression strain tLK04 with its respective SacII restriction sites. B. Southern Blot analysis of the A. niger parental strain tLK01 and five ∆fwnA::lpaA overexpression strains tLK04. Genomic DNA was digested with SacII. A digoxigenin-labeled probe was generated with oMG504/oMG505 to hybridize with the fwnA downstream sequence and signals were detected with CDPstar (Roche Diagnostics). Strains used for subsequent metabolic analysis are highlighted in green.
Quantum Point Charges Interacting with Quasi-classical Electromagnetic Fields
Creators: name: Breteaux, S.
name: Correggi, M.
name: Falconi, M.
name: Faupin, J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study effective models describing systems of quantum particles interacting with quantized (electromagnetic) fields in the quasi-classical regime, i.e., when the field's state shows a large average number of excitations. Once the field's degrees of freedom are traced out on factorized states, the reduced dynamics of the particles' system is described by an effective Schrödinger operator keeping track of the field's state. We prove that, under suitable assumptions on the latter, such effective models are well-posed even if the particles are point-like, that is no ultraviolet cut-off is imposed on the interaction with quantum fields.
description: 24 pages
High-efficiency broadband achromatic metalens in the visible
Creators: name: Hou, Liang
name: Zhou, Hongyuan
name: Zhang, Dandan
name: Lu, Ganqing
name: Zhang, Dejiang
name: Liu, Tingting
name: Xiao, Shuyuan
name: Yu, Tianbao
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The metalenses have been extensively studied for their compact and flexible characteristics in focusing and imaging applications. However, it remains a significant challenge to design a broadband achromatic metalens that maintains high efficiency under arbitrary polarization incidence. In this work, we design a broadband achromatic metalens that achieves polarization-independent, high-efficiency focusing by effectively utilizing both co-polarization and cross-polarization components of the transmitted light. Using a minimalist anisotropic nanofin library, we optimize the phase distribution of the metalens at each designed wavelength with the particle swarm algorithm. Numerical simulations demonstrate a stable focal length with a deviation of less than 4$\%$ and an average focusing efficiency of 80.5$\%$ in the visible wavelength range of 450 to 650 nm. Moreover, we design a multi-wavelength off-axis bi-focal metalens to demonstrate the flexible control of output light phase and dispersion achieved by this method. The generality of this design enables its implementation in various metasurface devices, accelerating applications in broadband imaging and virtual/augmented reality.
Domain-Wall Ferroelectric Polarons in a two-dimensional Rotor Lattice Model
Creators: name: Kluibenschedl, Florian
name: Koutentakis, Georgios M.
name: Alhyder, Ragheed
name: Lemeshko, Mikhail
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate the formation of ferroelectric domain-wall polarons in a minimal two-dimensional lattice model of electrons interacting with rotating dipoles. Along the domain-wall, the rotors polarize in opposite directions, causing the electron to localize along a particular lattice direction. The rotor-electron coupling is identified as the origin of a structural instability in the crystal that leads to the domain-wall formation via a symmetry-breaking process. Our results provide the first theoretical description of ferroelectric polarons, as discussed in the context of soft semiconductors.
description: 6 pages, 4 figures
Local Order Controls the Onset of Oscillations in the Nonreciprocal Ising Model
Creators: name: Blom, Kristian
name: Thiele, Uwe
name: Godec, Aljaž
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Probability (math.PR)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We elucidate the generic bifurcation behavior of local and global order in the nonreciprocal Ising model evolving under Glauber dynamics. We show that a critical magnitude of nearest-neighbor correlations within the respective lattices controls the emergence of coherent oscillations of global order as a result of frustration. Local order is maintained during these oscillations, implying nontrivial spatiotemporal correlations. Long-lived states emerge in the strong-interaction regime. The residence time in either of these states eventually diverges, giving rise to ordered non-equilibrium trapped states and a loss of ergodic behavior via a saddle-node-infinite-period bifurcation. Our work provides a comprehensive microscopic understanding of the nonreciprocal Ising model beyond the mean-field approximation.
Four-Point Functions with a Twist
Creators: name: Bargheer, Till
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2017
Subjects: supersymmetry: 4
operator: local
gauge field theory: Yang-Mills
n-point function: 4
operator product expansion
correlation function
space-time dependence
magnon
twist
excited state
translation
R symmetry

description: We study the OPE of correlation functions of local operators in planar $N = 4$ super Yang-Mills theory. The considered operators have an explicit spacetime dependence that is defined by twisting the translation generators with certain R-symmetry generators. We restrict to operators that carry a small number of excitations above the twisted BMN vacuum. The OPE limit of the four-point correlator is dominated by internal states with few magnons on top of the vacuum. The twisting directly couples all spacetime dependence of the correlator to these magnons. We analyze the OPE in detail, and single out the extremal states that have to cancel all double-trace contributions.
Mrs. Lamb and her Daughter, Carol Lamb
Creators: name: Edwardes, Dave
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Women
Girls
Children & adults
Children
Mothers & children
Families
Dresses

description: This photograph shows Mrs. Lamb seated on the right and her Daughter, Carol Lamb, standing of the left, both in matching outfits.
Ritzinschriften Auf Sattelbeschlägen Von Asciburgium
Creators: name: Hartmann, Benjamin
Publisher: name: Zenodo
Year: 2012
Subjects: epigraphy
latin
classical studies
history
roman history
roman military
graffiti
inscription
saddle
military equipment
saddle horn

description: Graffiti on Roman saddle horns from Asciburgium. (in German)
Optimizing Variational Physics-Informed Neural Networks Using Least Squares
Creators: name: Uriarte, Carlos
name: Bastidas, Manuela
name: Pardo, David
name: Taylor, Jamie M.
name: Rojas, Sergio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Variational Physics-Informed Neural Networks often suffer from poor convergence when using stochastic gradient-descent-based optimizers. By introducing a Least Squares solver for the weights of the last layer of the neural network, we improve the convergence of the loss during training in most practical scenarios. This work analyzes the computational cost of the resulting hybrid Least-Squares/Gradient-Descent optimizer and explains how to implement it efficiently. In particular, we show that a traditional implementation based on backward-mode automatic differentiation leads to a prohibitively expensive algorithm. To remedy this, we propose using either forward-mode automatic differentiation or an ultraweak-type scheme that avoids the differentiation of trial functions in the discrete weak formulation. The proposed alternatives are up to one hundred times faster than the traditional one, recovering a computational cost-per-iteration similar to that of a conventional gradient-descent-based optimizer alone. To support our analysis, we derive computational estimates and conduct numerical experiments in one- and two-dimensional problems.
description: Published work
ALTa Ciencia Abierta: Resultados Abiertos
Creators: name: Xhardez, Verónica
name: Burin, Débora Inés
name: Míguez, María Paz
name: Formoso, Jesica
name: Buede, Julián
Publisher: name: Zenodo
Year: 2024
Subjects: Ciencia Abierta
Open Science

description: Presentación para el encuentro 5 de ALTa Ciencia Abierta, las cohortes de formación para extender los principios de la Ciencia Abierta en América Latina y más allá.
Supplemental Material, DS_10.1177_0022243719827963 - Harmful Effects of Mental Imagery and Customer Orientation During New Product Screening
Creators: name: DeRosia, Eric D.
name: S., Ryan
Publisher: name: SAGE Journals
Year: 2019
Subjects: subject: 150402 Hospitality Management
subject: FOS: Economics and business

description: Supplemental Material, DS_10.1177_0022243719827963 for Harmful Effects of Mental Imagery and Customer Orientation During New Product Screening by Eric D. DeRosia and Ryan S. Elder in Journal of Marketing Research
Discriminating among cosmological models by data-driven methods
Creators: name: Vilardi, Simone
name: Capozziello, Salvatore
name: Brescia, Massimo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explores the Pantheon+SH0ES dataset to identify patterns that can discriminate between different cosmological models. We focus on determining whether the behaviour of dark energy is consistent with the standard $Λ$CDM model or suggests novel cosmological features. The central goal is to evaluate the robustness of the $Λ$CDM model compared with other dark energy models, and to investigate whether there are deviations that might indicate new cosmological insights. The study takes into account a data-driven approach, using both traditional statistical methods and machine learning techniques. Initially, we evaluate six different dark energy models using traditional statistical methods like Markov Chain Monte Carlo (MCMC), Static and Dynamic Nested Sampling to infer the cosmological parameters. Subsequently, we adopt a machine learning approach, developing a regression model to compute the distance modulus of each supernova, expanding the feature set to 74 statistical features. Traditional statistical analysis confirms that the $Λ$CDM model is robust, yielding expected parameter values. Other models show deviations, with the Generalised and Modified Chaplygin Gas models performing poorly. In the machine learning analysis, feature selection techniques, particularly Boruta, significantly improve model performance. In particular, models initially considered weak (Generalised/Modified Chaplygin Gas) show significant improvement after feature selection. The study demonstrates the effectiveness of a data-driven approach to cosmological model evaluation. The $Λ$CDM model remains robust, while machine learning techniques, in particular feature selection, reveal potential improvements in alternative models which could be relevant for new observational campaigns like the recent DESI survey.
description: 23 pages, 20 figures, accepted for publication in Astronomyy & Astrophysics
A new quantization scheme of black holes in effective loop quantum gravity
Creators: name: Gan, Wen-Cong
name: Wang, Anzhong
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Loop quantum cosmology has achieved great successes, in which the polymerization plays a crucial role. In particular, the phase-space-variable dependent polymerization turns out to be the unique one that leads to consistent quantization of the homogeneous and isotropic universe. However, when applying the same scheme to the quantization of black holes, it meets resistances, when the Kantowski-Sachs (KS) gauge is adopted. In this paper, we continue to study the quantum effects of the polymerization near the location that a classical black hole horizon used to be, from the point of view of effective loop quantum gravity in the KS gauge. In particular, we find a phase-space-variable dependent polymerization scheme that leads to negligible quantum effects near the location of the classical black hole horizon, but significantly alters the spacetime structure near the origin, so that the classical singularity is finally replaced by a finite and regular transition surface. The final geodesically-complete spacetime consists of the regular transition surface that connects a black hole in one side and an anti-trapped region in the other side. In the anti-trapped region, no white hole horizons are found and the spacetime is extended to infinity, at which the geometric radius of the two-spheres becomes infinitely large.
description: revtex4-2, 17 figures, and no tables; v2: typos corrected
A New Spin on Material Properties: Local Magnetic Structure in Functional and Quantum Materials
Creators: name: Frandsen, Benjamin A.
name: Fischer, Henry E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The past few decades have made clear that the properties and performances of emerging functional and quantum materials can depend strongly on their local atomic and/or magnetic structure, particularly when details of the local structure deviate from the long-range structure averaged over space and time. Traditional methods of structural refinement (e.g. Rietveld) are typically sensitive only to the average structure, creating a need for more advanced structural probes suitable for extracting information about structural correlations on short length- and time-scales. In this Perspective, we describe the importance of local magnetic structure in several classes of emerging materials and present the magnetic pair distribution function (mPDF) technique as a powerful tool for studying short-range magnetism from neutron total-scattering data. We then provide a selection of examples of mPDF analysis applied to magnetic materials of recent technological and fundamental interest, including the antiferromagnetic semiconductor MnTe, geometrically frustrated magnets, and iron-oxide magnetic nanoparticles. The rapid development of mPDF analysis since its formalization a decade ago puts this technique in a strong position for making continued impact in the study of local magnetism in emerging materials.
Key-avoidance for alternating sign matrices
Creators: name: Bouvel, Mathilde
name: Smith, Rebecca
name: Striker, Jessica
Publisher: name: arXiv
Year: 2024
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A05, 05A19

description: We initiate a systematic study of key-avoidance on alternating sign matrices (ASMs) defined via pattern-avoidance on an associated permutation called the \emph{key} of an ASM. We enumerate alternating sign matrices whose key avoids a given set of permutation patterns in several instances. We show that ASMs whose key avoids $231$ are permutations, thus any known enumeration for a set of permutation patterns including $231$ extends to ASMs. We furthermore enumerate by the Catalan numbers ASMs whose key avoids both $312$ and $321$. We also show ASMs whose key avoids $312$ are in bijection with the gapless monotone triangles of [Ayyer, Cori, Gouyou-Beauchamps 2011]. Thus key-avoidance generalizes the notion of $312$-avoidance studied there. Finally, we enumerate ASMs with a given key avoiding $312$ and $321$ using a connection to Schubert polynomials, thereby deriving an interesting Catalan identity.
description: 28 pages
Strang splitting structure-preserving high-order compact difference schemes for nonlinear convection diffusion equations
Creators: name: Kuang, Baolin
name: Xie, Shusen
name: Fu, Hongfei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M06, 65M15, 35K55

description: In this paper, we present a class of high-order and efficient compact difference schemes for nonlinear convection diffusion equations, which can preserve both bounds and mass. For the one-dimensional problem, we first introduce a high-order compact Strang splitting scheme (denoted as HOC-Splitting), which is fourth-order accurate in space and second-order accurate in time. Then, by incorporating the Lagrange multiplier approach with the HOC-Splitting scheme, we construct two additional bound-preserving or/and mass-conservative HOC-Splitting schemes that do not require excessive computational cost and can automatically ensure the uniform bounds of the numerical solution. These schemes combined with an alternating direction implicit (ADI) method are generalized to the two-dimensional problem, which further enhance the computational efficiency for large-scale modeling and simulation. Besides, we present an optimal-order error estimate for the bound-preserving ADI scheme in the discrete $L_2$ norm. Finally, ample numerical examples are presented to verify the theoretical results and demonstrate the accuracy, efficiency, and effectiveness in preserving bounds or/and mass of the proposed schemes.
description: 32 pages, 6 tables, 35 figures
Auxillary_materials_Dec_2019_ – Supplemental material for Post-conflict reconstruction in the Middle East and North Africa region: A bidirectional parametric urban design approach
Creators: name: Steinø, Nicolai
name: Dabaieh, Marwa
name: Bih, Karima Ben
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: 91299 Materials Engineering not elsewhere classified
subject: FOS: Materials engineering

description: Supplemental material, Auxillary_materials_Dec_2019_ for Post-conflict reconstruction in the Middle East and North Africa region: A bidirectional parametric urban design approach by Nicolai Steinø, Marwa Dabaieh and Karima Ben Bih in International Journal of Architectural Computing
Layerwise Recurrent Router for Mixture-of-Experts
Creators: name: Qiu, Zihan
name: Huang, Zeyu
name: Cheng, Shuang
name: Zhou, Yizhi
name: Wang, Zili
name: Titov, Ivan
name: Fu, Jie
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The scaling of large language models (LLMs) has revolutionized their capabilities in various tasks, yet this growth must be matched with efficient computational strategies. The Mixture-of-Experts (MoE) architecture stands out for its ability to scale model size without significantly increasing training costs. Despite their advantages, current MoE models often display parameter inefficiency. For instance, a pre-trained MoE-based LLM with 52 billion parameters might perform comparably to a standard model with 6.7 billion parameters. Being a crucial part of MoE, current routers in different layers independently assign tokens without leveraging historical routing information, potentially leading to suboptimal token-expert combinations and the parameter inefficiency problem. To alleviate this issue, we introduce the Layerwise Recurrent Router for Mixture-of-Experts (RMoE). RMoE leverages a Gated Recurrent Unit (GRU) to establish dependencies between routing decisions across consecutive layers. Such layerwise recurrence can be efficiently parallelly computed for input tokens and introduces negotiable costs. Our extensive empirical evaluations demonstrate that RMoE-based language models consistently outperform a spectrum of baseline models. Furthermore, RMoE integrates a novel computation stage orthogonal to existing methods, allowing seamless compatibility with other MoE architectures. Our analyses attribute RMoE's gains to its effective cross-layer information sharing, which also improves expert selection and diversity. Our code is at https://github.com/qiuzh20/RMoE .
Interplay between evanescent scattering modes and finite dispersion in superconducting junctions
Creators: name: Kruti, Daniel
name: Riwar, Roman-Pascal
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconducting junctions are essential building blocks for quantum hardware, and their fundamental behaviour remains a highly active research field. The behaviour of generic junctions is conveniently described by Beenakker's determinant formula, linking the subgap energy spectrum to the scattering matrix characterising the junction. In particular, the gap closing between bound and continuum states in short junctions follows from unitarity of the scattering matrix, and thus, from probability conservation. In this work, we critically reassess two assumptions: that scattering in short junctions is approximately energy-independent and dominated by planar channels. We argue that strongly energy-dependant scattering follows from finite dispersion of the conductor electrons even when they spend little time within the scattering region, and show that evanescent modes play a central role when cross-channel scattering is important. By generalising Beenakker's equation and performing a mapping to an effective Hamiltonian, we show that the gap closing is linked to a chiral symmetry. While finite energy dependence in the scattering breaks the chiral symmetry, we show two distinct mechanisms preserving the gap closing, each connected to new types of constraints on energy-dependant scattering matrices beyond unitarity. If the dispersive mode is planar, the gap closing is still preserved through a time-dependant probability conservation analysis of the scattering process. If the dispersive channel is evanescent, we derive a constraint which, notably, cannot follow from probability conservation. We thus demonstrate that Andreev physics reveal a much wider variety of properties of normal-metal scattering than commonly expected. We expect that our findings will have an impact on the dissipative behaviour of driven junctions, and offer a new perspective on fundamental properties of scattering matrices.
EPB908294 Supplemental Material7 - Supplemental material for Capability-wise walkability evaluation as an indicator of urban peripherality
Creators: name: Blečić, Ivan
name: Cecchini, Arnaldo
name: Congiu, Tanja
name: Fancello, Giovanna
name: Talu, Valentina
name: Trunfio, Giuseppe A
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: Geography
subject: 120599 Urban and Regional Planning not elsewhere classified
subject: FOS: Social and economic geography

description: Supplemental material, EPB908294 Supplemental Material7 for Capability-wise walkability evaluation as an indicator of urban peripherality by Ivan Blečić, Arnaldo Cecchini, Tanja Congiu, Giovanna Fancello, Valentina Talu and Giuseppe A Trunfio in EPB: Urban Analytics and City Science
Imaginary Hamiltonian variational ansatz for combinatorial optimization problems
Creators: name: Wang, Xiaoyang
name: Chai, Yahui
name: Feng, Xu
name: Guo, Yibin
name: Jansen, Karl
name: Tüysüz, Cenk
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Obtaining exact solutions to combinatorial optimization problems using classical computing is computationally expensive. The current tenet in the field is that quantum computers can address these problems more efficiently. While promising algorithms require fault-tolerant quantum hardware, variational algorithms have emerged as viable candidates for near-term devices. The success of these algorithms hinges on multiple factors, with the design of the ansatz having the utmost importance. It is known that popular approaches such as quantum approximate optimization algorithm (QAOA) and quantum annealing suffer from adiabatic bottlenecks, that lead to either larger circuit depth or evolution time. On the other hand, the evolution time of imaginary time evolution is bounded by the inverse energy gap of the Hamiltonian, which is constant for most non-critical physical systems. In this work, we propose imaginary Hamiltonian variational ansatz ($i$HVA) inspired by quantum imaginary time evolution to solve the MaxCut problem. We introduce a tree arrangement of the parametrized quantum gates, enabling the exact solution of arbitrary tree graphs using the one-round $i$HVA. For randomly generated $D$-regular graphs, we numerically demonstrate that the $i$HVA solves the MaxCut problem with a small constant number of rounds and sublinear depth, outperforming QAOA, which requires rounds increasing with the graph size. Furthermore, our ansatz solves MaxCut exactly for graphs with up to 24 nodes and $D \leq 5$, whereas only approximate solutions can be derived by the classical near-optimal Goemans-Williamson algorithm. We validate our simulated results with hardware demonstrations on a graph with 67 nodes.
description: 24 pages, 17 figures
The Proportion of Irreducible p-adic Polynomials
Creators: name: Rajagopal, Isaac
Publisher: name: arXiv
Year: 2024
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We attempt to quantify the exact proportion of monic $p$-adic polynomials of degree $n$ which are irreducible. We find an exact answer to this when $n$ is prime and $p \neq n$, and also when $n = 4$ and $p \neq 2$. Our answers are rational functions in $p$. This relates to previous work done to find exact proportions of $p$-adic polynomials of degree $n$ which have $k$ roots.
description: 24 pages
Supplemental Material, Supplementary_Table_1_EXEr_related_differential_methylation_density_regions - Methylome Variation Predicts Exemestane Resistance in Advanced ER+ Breast Cancer
Creators: name: Xiao-Ran Liu
name: Ru-Yan Zhang
name: Gong, Hao
name: Rugo, Hope S.
name: Chen, Ling-Bo
name: Fu, Yuan
name: Che, Jian-Wei
name: Tie, Jian
name: Shao, Bin
name: Wan, Feng-Ling
name: Wei-Yao Kong
name: Song, Guo-Hong
name: Jiang, Han-Fang
name: Xu, Guo-Bing
name: Li, Hui-Ping
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: 111299 Oncology and Carcinogenesis not elsewhere classified
subject: FOS: Clinical medicine
subject: 110320 Radiology and Organ Imaging
subject: Biochemistry

description: Supplemental Material, Supplementary_Table_1_EXEr_related_differential_methylation_density_regions for Methylome Variation Predicts Exemestane Resistance in Advanced ER+ Breast Cancer by Xiao-ran Liu, Ru-yan Zhang, Hao Gong, Hope S. Rugo, Ling-bo Chen, Yuan Fu, Jian-wei Che, Jian Tie, Bin Shao, Feng-ling Wan, Wei-yao Kong, Guo-hong Song, Han-fang Jiang, Guo-bing Xu and Hui-ping Li in Technology in Cancer Research & Treatment