cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Evolution of the Collection of State Tax Revenue in Portugal with the Introduction of e-Invoicing
Creators: name: Santos, Ricardo
name: Baía, Amândio Pereira
name: Natário, Maria Manuela Santos
Publisher: name: International Journal of Business Innovation
Year: 2024

description: The digital revolution has taken place in several areas and has been transversal in the Portuguese economy. Concerning the accounting area, it promoted the creation of new tools for processing information, increasing production capacity, automating processes for filling in tax returns and improving the information provided. The Tax Authority (AT) computerized its services, created new tax obligations, and automated the revenue collection process. Regarding tax obligations, the former highlighted the e-invoice system and a tax obligation for monthly communication of the turnover of economic agents with commercial activity. This obligation generated greater AT control over the effective delivery of Value Added Tax (VAT) by economic agents. The study of VAT is important because it is the (indirect) tax that has the greatest weight in the State's annual tax revenue. In light of the above, by interconnecting the digital evolution of the AT accounting sector and the evolution of the effective collection of tax revenue, this study aims to determine the advantages of the digital evolution and whether it provided an increase in tax revenue collected by the State. Thus, considering the advantages digital evolution has brought to the accounting area in general and the Tax Authority in particular, in this study we analysed the effect that the tax transformation had on VAT revenue, between the years 2012 and 2021. From the analysis conducted, we can conclude the State revenue from this tax increased. In general, the digital revolution has enabled accounting professionals with computer skills, and AT has changed its way of working with taxpayers.
description: International Journal of Business Innovation, Volume 3 Issue 1 (2024)
Atmospheric neutrino oscillations in three-flavor neutrinos
Creators: name: Teshima, T.
name: Sakai, T.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyzed the atmospheric neutrino experiments of SuperKamiokande including zenith angle dependence's using the three-flavor neutrino framework with the hierarchy m^2_1 \approx m^2_2<
description: 21 pages, LaTeX
Dr. KID: Direct Remeshing and K-set Isometric Decomposition for Scalable Physicalization of Organic Shapes
Creators: name: Khan, Dawar
name: Bohak, Ciril
name: Viola, Ivan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Graphics (cs.GR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Dr. KID is an algorithm that uses isometric decomposition for the physicalization of potato-shaped organic models in a puzzle fashion. The algorithm begins with creating a simple, regular triangular surface mesh of organic shapes, followed by iterative k-means clustering and remeshing. For clustering, we need similarity between triangles (segments) which is defined as a distance function. The distance function maps each triangle's shape to a single point in the virtual 3D space. Thus, the distance between the triangles indicates their degree of dissimilarity. K-means clustering uses this distance and sorts of segments into k classes. After this, remeshing is applied to minimize the distance between triangles within the same cluster by making their shapes identical. Clustering and remeshing are repeated until the distance between triangles in the same cluster reaches an acceptable threshold. We adopt a curvature-aware strategy to determine the surface thickness and finalize puzzle pieces for 3D printing. Identical hinges and holes are created for assembling the puzzle components. For smoother outcomes, we use triangle subdivision along with curvature-aware clustering, generating curved triangular patches for 3D printing. Our algorithm was evaluated using various models, and the 3D-printed results were analyzed. Findings indicate that our algorithm performs reliably on target organic shapes with minimal loss of input geometry.
title: ADCO, Cartulaire de Cîteaux pour les possessions de Dijon et du Dijonnais (XVe siècle), Cart. 175 (11 H 479), 115 folios, f. 0053
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2017
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire de Cîteaux pour les possessions de Dijon et du Dijonnais (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 175 (11 H 479), 115 folios, f. 0053, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions de Dijon et du Dijonnais (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 175 (11 H 479), 115 folios, f. 0053, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Trend Scouting (NFDI4Earth Deliverable D1.2.1 and D1.2.2)
Creators: name: Busch, Steffen
name: Feng, Yu
name: Sester, Monika
Publisher: name: Zenodo
Year: 2024
Subjects: NFDI
NFDI4Earth
NFDI4Earth Incubator
NFDI4Earth Deliverable
NFDI4Earth Task Area 1
NFDI4Earth 2Participate
Knowledge Graph
Hierarchical Data Format
Inter Planetary File System
Transformers

description: This document collects trends in digitization in the geosciences, including but not limitedto automatic metadata extraction and annotation, semantic mapping and harmonization,machine learning, data fusion, visualization and interaction.The objective of this collection is to steer the exploration of new potentially relevant buildingblocks to be included in NFDI4Earth and related NFDI consortia.This is a living document with annual deliverables and it combines the deliverables D1.2.1 andD1.2.2. It is an initial structure, which can easily be adapted in the future, if the consortiumdecides for another structure for the documentation.
description: This work has been funded by the German Research Foundation (DFG) through the project NFDI4Earth (DFG project no. 460036893, https://www.nfdi4earth.de/) within the German National Research Data Infrastructure (NFDI, https://www.nfdi.de/).
Directly from $H$-flux to the family of three nonlocal $R$-flux theories
Creators: name: Nikolić, B.
name: Obrić, D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article we consider T-dualization of the 3D closed bosonic string in the weakly curved background - constant metric and Kalb-Ramond field with one non-zero component, $B_{xy}=Hz$, where field strength $H$ is infinitesimal. We use standard and generalized Buscher T-dualization procedure and make T-dualization starting from coordinate $z$, via $y$ and finally along $x$ coordinate. All three theories are {\it nonlocal}, because variable $ΔV$, defined as line integral, appears as an argument of background fields. After the first T-dualization we obtain commutative and associative theory, while after we T-dualize along $y$, we get, $κ$-Minkowski-like, noncommutative and associative theory. At the end of this T-dualization chain we come to the theory which is both noncommutative and nonassociative. The form of the final T-dual action does not depend on the order of T-dualization while noncommutativity and nonassociativity relations could be obtained from those in the $x\to y\to z$ case by replacing $H\to - H$.
description: Section 4 (quantum aspect of the problem) is added, some other explanations, clarifications and comments added
Child mental health and maternal depression history in Pakistan
Creators: name: Rajan, D.G
name: Sikander, S
name: Rahman, A
name: O’Donnell, K
name: Bhalotra, S
name: Bangash, O
name: Franz, L
name: Ganga, N
name: Maselko, J
Publisher: name: Dr. Dietrich Steinkopff Verlag GmbH and Co. KG
Year: 2016

description: Purpose: We address the significant gaps in knowledge of prevalence and correlates of child mental health (CMH) problems outside of high income countries. We describe the prevalence of CMH problems and their correlates with a focus on the association with maternal depression in a sample of seven-year-old children in rural Pakistan. Methods: This study was nested in a long-term follow-up of a perinatal depression intervention together with a reference group of non-depressed women, yielding a population representative sample. The Total Difficulties (TD) and component scores of the Strength and Difficulties Questionnaire (SDQ) were used to measure emotional and behavioral difficulties. Results: The mean SDQ TD score was 10.6 (standard deviation = 8.3), with 12.5 % of children categorized as “abnormal” using standard cutoffs. Boys had a roughly 1 point higher (worse) SDQ TD score than girls (p value = 0.04). Children of mothers who were depressed prenatally as well as currently had SDQ TD scores 2.87 points higher than children whose mothers were not depressed at either time point (p value < 0.01). This association was stronger for boys. There was no evidence of elevated SDQ TD score among children whose mothers were depressed only prenatally or only currently. Some deviations from this pattern were observed with specific components of the SDQ. Conclusions: In this low resource, South Asian setting, we found evidence of elevated levels of emotional and behavioral problems, highlighting the need for effective interventions. Given the strong association of CMH with maternal depression, any intervention efforts should give strong consideration to maternal mental health.
A new experimental approach to probe QCD axion dark matter in the mass range above 40$μ$eV
Creators: name: The MADMAX Collaboration
name: Brun, P.
name: Caldwell, A.
name: Chevalier, L.
name: Dvali, G.
name: Freire, P.
name: Garutti, E.
name: Heyminck, S.
name: Jochum, J.
name: Knirck, S.
name: Kramer, M.
name: Krieger, C.
name: Lasserre, T.
name: Lee, C.
name: Li, X.
name: Lindner, A.
name: Majorovits, B.
name: Martens, S.
name: Matysek, M.
name: Millar, A.
name: Raffelt, G.
name: Redondo, J.
name: Reimann, O.
name: Ringwald, A.
name: Saikawa, K.
name: Schaffran, J.
name: Schmidt, A.
name: Schütte-Engel, J.
name: Steffen, F.
name: Strandhagen, C.
name: Wieching, G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The axion emerges in extensions of the Standard Model that explain the absence of CP violation in the strong interactions. Simultaneously, it can provide naturally the cold dark matter in our universe. Several searches for axions and axion-like particles (ALPs) have constrained the corresponding parameter space over the last decades but no unambiguous hints of their existence have been found. The axion mass range below 1 meV remains highly attractive and a well motivated region for dark matter axions. In this White Paper we present a description of a new experiment based on the concept of a dielectric haloscope for the direct search of dark matter axions in the mass range of 40 to 400 $μ$eV. This MAgnetized Disk and Mirror Axion eXperiment (MADMAX) will consist of several parallel dielectric disks, which are placed in a strong magnetic field and with adjustable separations. This setting is expected to allow for an observable emission of axion induced electromagnetic waves at a frequency between 10 to 100 GHz corresponding to the axion mass.
Combination of Sonogashira coupling and 5-endo-dig cyclization for the synthesis of 2,6-disubstituted-5-azaindoles
Creators: name: Balfour, Michael N.
name: Zukerman-Schpector, Julio
name: Rodriguez, Maria José Dávila
name: Reis, Joel Savi
name: Esteves, Carlos Henrique A.
name: Stefani, Hélio A.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology

description: The synthesis of a library of 2,6-disubstituted-azaindoles relying on Sonogashira cross-coupling and intramolecular cyclization is described. Eleven examples of 6-alkynyl derivatives and three examples of 3-bromo-5-azaindoles are reported. One of the 3-bromo-5-azaindoles was also further functionalized with two different aryl trifluoroborate salts via Suzuki-Miyaura coupling reaction.
ZigzagNetVis: Suggesting temporal resolutions for graph visualization using zigzag persistence
Creators: name: Tinarrage, Raphaël
name: Ponciano, Jean R.
name: Linhares, Claudio D. G.
name: Traina, Agma J. M.
name: Poco, Jorge
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences
subject: 68U05, 55N31

description: Temporal graphs are commonly used to represent complex systems and track the evolution of their constituents over time. Visualizing these graphs is crucial as it allows one to quickly identify anomalies, trends, patterns, and other properties that facilitate better decision-making. In this context, selecting an appropriate temporal resolution is essential for constructing and visually analyzing the layout. The choice of resolution is particularly important, especially when dealing with temporally sparse graphs. In such cases, changing the temporal resolution by grouping events (i.e., edges) from consecutive timestamps -- a technique known as timeslicing -- can aid in the analysis and reveal patterns that might not be discernible otherwise. However, selecting an appropriate temporal resolution is a challenging task. In this paper, we propose ZigzagNetVis, a methodology that suggests temporal resolutions potentially relevant for analyzing a given graph, i.e., resolutions that lead to substantial topological changes in the graph structure. ZigzagNetVis achieves this by leveraging zigzag persistent homology, a well-established technique from Topological Data Analysis (TDA). To improve visual graph analysis, ZigzagNetVis incorporates the colored barcode, a novel timeline-based visualization inspired by persistence barcodes commonly used in TDA. We also contribute with a web-based system prototype that implements suggestion methodology and visualization tools. Finally, we demonstrate the usefulness and effectiveness of ZigzagNetVis through a usage scenario, a user study with 27 participants, and a detailed quantitative evaluation.
description: This document contains the main article and supplementary material, similar to published version. For associated code and software, see https://github.com/raphaeltinarrage/ZigzagNetVis
Correlation between maternal and infant cortisol varies by breastfeeding status
Creators: name: Maselko, J
name: Stroo, M
name: Mayhew, M
name: Hoyo, C
name: Neelon, S.E.B.
Publisher: name: Elsevier Ltd
Year: 2015

description: Objective: The objective of this study was to examine associations of mother and infant salivary cortisol, measured three times over the course of a day, and assess whether these varied by breastfeeding status. Methods: We conducted a cross-sectional study of 54 mothers and their infants aged 4-11 months. Mothers collected their own saliva and that of their infants upon awakening, 30. min after waking and at bedtime. Breastfeeding status was reported by mothers and cortisol level was measured in saliva in μg/dl using standard techniques. We used generalized linear models to evaluate relationships between maternal and infant cortisol levels, and assessed whether the relationship differed by breastfeeding status: formula only compared to partial and full breastfeeding, adjusting for infant sex, race, age, maternal education, and family income. Results: Thirty-four infants received formula only and 20 were either partially or fully breastfed. Breastfeeding was associated with higher household income, higher maternal education, and white race. Cortisol levels were higher among breastfed infants at all three time points. After adjustment, maternal cortisol levels were related with infant cortisol at bedtime only (regression estimate 0.06; 95% CI: 0.10, 1.1; p= 0.02). The adjusted association between bedtime maternal and infant cortisol was stronger among breastfeeding dyads than among formula-feeding dyads (regression estimate 1.0; 95% CI: 0.1, 2.0; p= 0.04 vs. 0.6; CI: -0.1, 1.3; p= 0.10). In addition, we assessed the influence of maternal education and household income in our adjusted model; income strengthened the observed association, whereas maternal education did not change the estimate. Conclusions: Breastfeeding mothers and infants had significant correlations for cortisol at bedtime, while formula-feeding dyads did not. These data suggest that several factors may contribute to cortisol synchrony observed in mother/infant dyads, including the transfer of cortisol in human milk, physical interaction such as skin-to-skin contact, and shared environment. In addition, our findings support household income as a possible contributor.
title: A World Across its Surface: The Story of the Fiddle
Creators: name: Hale, Julie L.
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2000

description: This nonfiction narrative traces the fiddle from its European origins to its American incarnation as a folk instrument, blending history with the personal stories of fiddle makers and players. The centerpiece around which a varied cast of luthiers and musicians shifts, the instrument itself is the main character of the narrative.

As the work unfolds, various facets of the fiddle's identity are explored, revealing a riddle of instrument—a creation whose beauty confounds, and whose anatomy contradicts physics and geometry, science and sense. More than anything else, perhaps, this narrative, in the end, is an attempt at penetrating the mystery of an elusive instrument.
Non-singular pre-big bang scenarios from all-order $α'$ corrections
Creators: name: Gasperini, M.
name: Veneziano, G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We reformulate in Hamiltonian language the recent proposal by Hohm and Zwiebach of an action yielding the most general $O(d,d)$-symmetric string cosmology equations, at tree-level in the string-loop expansion, but to all orders in the $α'$ expansion. This allows us to give a simple characterization of a large class of non-singular, non-perturbative, pre-big bang scenarios smoothly interpolating between a low-energy initial accelerated (string frame) expansion and a phase of final (string and Einstein frame) decelerated expansion. Interestingly, these solutions must necessarily include, just around the bounce, a very short phase of (string-frame) contraction.
description: 18 pages, 10 figures. Final version published in JHEP 07 (2023) 144. Available at https://link.springer.com/article/10.1007/JHEP07(2023)144
Local density of states around a magnetic impurity in high-Tc superconductors based on the t-J model
Creators: name: Tsuchiura, Hiroki
name: Tanaka, Yukio
name: Ogata, Masao
name: Kashiwaya, Satoshi
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The local density of states (LDOS) around a magnetic impurity in high-Tc superconductors is studied using the two-dimensional t-J model with a realistic band structure. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. In sharp contrast with the nonmagnetic impurity case, the LDOS near the magnetic impurity shows two resonance peaks reflecting the presence of spin-dependent resonance states. It is also shown that these resonance states are approximately localized around the impurity. The present results have an large implication on the scanning tunneling spectroscopy observation of Bi_{2}Sr_{2}Ca(Cu_{1-x}Ni[Zn]_{x})_{2}O_{8+delta}.
description: 4 pages, 3 figures, to appear in Phys. Rev. Lett
Field dynamics inference for local and causal interactions
Creators: name: Frank, Philipp
name: Leike, Reimar
name: Enßlin, Torsten A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Methodology (stat.ME)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Inference of fields defined in space and time from observational data is a core discipline in many scientific areas. This work approaches the problem in a Bayesian framework. The proposed method is based on statistically homogeneous random fields defined in space and time and demonstrates how to reconstruct the field together with its prior correlation structure from data. The prior model of the correlation structure is described in a non-parametric fashion and solely builds on fundamental physical assumptions such as space-time homogeneity, locality, and causality. These assumptions are sufficient to successfully infer the field and its prior correlation structure from noisy and incomplete data of a single realization of the process as demonstrated via multiple numerical examples.
description: NIFTy5 release paper, 25 pages, 11 figures, code is part of NIFTy5 release at https://gitlab.mpcdf.mpg.de/ift/nifty
Combined KM3NeT/ARCA and ANTARES searches for point-like neutrino emission
Creators: name: Sanguineti, Matteo
Publisher: name: Zenodo
Year: 2024
Subjects: Neutrino Telescopes
Cosmic Neutrino
KM3NeT
ANTARES
Point-like Sources

description: Parallel Talk presented at the XX International Workshop on Neutrino Telescopes - Venice 23-27 October 2023 

 

Abstract:

Neutrino telescopes are the instruments for the detec6on of high energy cosmic neutrinos. The ANTARES detector operatedoffshore Toulon (France) for 16 years un6l 2022, while KM3NeT-ARCA infrastructure is under construc6on in Southern Italy. The ANTARES telescope was composed of 12 strings, each equipped with 75 op6cal modules. Each op6cal module contained one 10” photomul6plier tube to detect the faint light produced by neutrinos interac6ng in the surrounding water. Similarly, the KM3NeT-ARCA detector will count 230 strings of 18 op6cal modules, each containing 31 3” photomul6pliers. In recent years, there has been a growing interest in studying poten6al sources of neutrinos, as these sources can provide valuable informa6on about the most extreme phenomena in the Universe. This contribu6on will showcase the analysis of the combined data sample from ANTARES and the first two years of KM3NeT-ARCA to detect high energy cosmic neutrinos from point-like sources.
Critical Behavior and Duality in Dimensionally Reduced Planar Chern-Simons Superconductors
Creators: name: Xing, Yi-Hui
name: Zhuang, Lin
name: Marino, E. C.
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Tha quantum electrodynamics of particles constrained to move on a plane is not a fully dimensionally reduced theory because the gauge fields through which they interact live in higher dimensions. By constraining the gauge field to the surface of the bulk, we obtain a fully reduced planar Abelian Chern-Simons Higgs model that can describe the vortex dynamics and second-order superconducting-normal phase transitions in planar Chern-Simons superconductors. Dual analyses performed before and after dimensional reduction yield the same Lagrangian for describing the vortex dynamics, indicating the self-consistency of our reduced theory. Compared to ordinary (2+1)-dimensional electrodynamics, we obtain anomalous fermion statistical vortices, consistent with results considering boundary effects. An additional electric charge constraint and different Chern-Simons parameter constraints are also found, which may help define a self-dual conformal field theory. Our renormalization group analysis shows that the quantized critical exponent depends on the Chern-Simons parameter. Quench disorder can bring more stable fixed points with different dynamical critical exponents. If we dimensionally reduce to a curved surface, our theory can also be extended to curved spacetimes, where geometric flow will be introduced and compete with vortex flow.
description: 17 pages, 8 figures
Gravitational waves from inspiralling compact binaries: Parameter estimation using second-post-Newtonian waveforms
Creators: name: Poisson, Eric
name: Will, Clifford M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The parameters of inspiralling compact binaries can be estimated using matched filtering of gravitational-waveform templates against the output of laser-interferometric gravitational-wave detectors. Using a recently calculated formula, accurate to second post-Newtonian (2PN) order [order $(v/c)^4$, where $v$ is the orbital velocity], for the frequency sweep ($dF/dt$) induced by gravitational radiation damping, we study the statistical errors in the determination of such source parameters as the ``chirp mass'' $\cal M$, reduced mass $μ$, and spin parameters $β$ and $σ$ (related to spin-orbit and spin-spin effects, respectively). We find that previous results using template phasing accurate to 1.5PN order actually underestimated the errors in $\cal M$, $μ$, and $β$. For two inspiralling neutron stars, the measurement errors increase by less than 16 percent.
description: 14 pages, ReVTeX
Dynamics of domain walls motion driven by spin-orbit torque in antiferromagnets
Creators: name: Sanchez-Tejerina, Luis
name: Puliafito, Vito
name: Amiri, Pedram Khalili
name: Carpentieri, Mario
name: Finocchio, Giovanni
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Ultrafast dynamics of antiferromagnetic materials is an appealing feature for novel spintronic devices. Several experiments have shown that both, the static states and the dynamical behavior of the antiferromagnetic order, are strictly related to stabilization of domains and domain wall (DW) motion. Hence for a quantitative understanding of statics and dynamics of multidomain states in antiferromagnetic materials a full micromagnetic framework is necessary. Here, we use this model to study the antiferromagnetic DW motion driven by the spin-orbit torque. The main result is the derivation of analytical expressions for the DW width and velocity that exhibit a very good agreement with the numerical simulations in a wide range of parameters. We also find that a mechanism limiting the maximum applicable current in an antiferromagnetic racetrack memory is the continuous nucleation of the domains from the edge, which is qualitatively different from what is observed in ferromagnetic racetracks.
Globular clusters as a probe for Weyl Conformal Gravity
Creators: name: Islam, Tousif
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Eventual flattening of velocity dispersion profiles of some galactic globular clusters in the Milky Way cannot be explained in the framework of Newtonian gravity and hence in general theory of relativity in the weak field limit, without resorting to the occurrence of tidal effects. We explore the possibility of explaining such deviation from expected Keplerian fall-off in dispersion profiles within the context of Weyl conformal gravity. We choose a set of 20 globular clusters for which recent kinematic measurements are available. We model the globular clusters with approximate Hernquist mass profiles and choose a constant mass-to-light ratio throughout the cluster as the only free parameter in the model. Our analysis finds reasonable Weyl gravity fits to the observed dispersion profiles, exhibiting both Keplerian decline and eventual flattening, with acceptable mass-to-light ratios. We further recover a Tully-Fisher like scaling relation in globular clusters through Weyl gravity.
description: 11 pages, 8 figures, Accepted for publication in MNRAS, to appear in the given DOI
Triplanar Model for the Gap and Penetration Depth in YBCO
Creators: name: O'Donovan, C.
name: Carbotte, J. P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: YBaCuO_7 is a trilayer material with a unit cell consisting of a CuO_2 bilayer with a CuO plane of chains in between. Starting with a model of isolated planes coupled through a transverse matrix element, we consider the possibility of intra as well as interplane pairing within a nearly antiferromagnetic Fermi liquid model. Solutions of a set of three coupled BCS equations for the gap exhibit orthorhombic symmetry with s- as well as d-wave contributions. The temperature dependence and a-b in plane anisotropy of the resulting penetration depth is discussed and compared with experiment.
description: To appear in Physical Review B1 01Mar97; 12 pages with 10 figures; RevTeX+epsf
How should my chatbot interact? A survey on human-chatbot interaction design
Creators: name: Chaves, Ana Paula
name: Gerosa, Marco Aurelio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Chatbots' growing popularity has brought new challenges to HCI, having changed the patterns of human interactions with computers. The increasing need to approximate conversational interaction styles raises expectations for chatbots to present social behaviors that are habitual in human-human communication. In this survey, we argue that chatbots should be enriched with social characteristics that cohere with users' expectations, ultimately avoiding frustration and dissatisfaction. We bring together the literature on disembodied, text-based chatbots to derive a conceptual model of social characteristics for chatbots. We analyzed 56 papers from various domains to understand how social characteristics can benefit human-chatbot interactions and identify the challenges and strategies to designing them. Additionally, we discussed how characteristics may influence one another. Our results provide relevant opportunities to both researchers and designers to advance human-chatbot interactions.
Fast rotational intensive grazing - Pastoreio intensivo de rotação rápida
Creators: name: Catalan, María
name: Palomo, Gonzalo
name: Moreno, Gerardo
Publisher: name: Zenodo
Year: 2017
Subjects: holistic management
free-range
pasture pressure
cork tree stands
pasture
sheep
gestão holistica
criação ao ar livre
encabeçamento
montado
pastagens
gado ovino

description: Tradução de leaflet do projeto AGFORWARD - O aumento na procura de carne resulta simultaneamente do aumento da população humana e do consumo de carne por pessoa. Agricultores e cientistas têm tentado reduzir os impactos ambientais adversos do gado através do aumento da eficiência da produção e da redução da sua contribuição para o consumo humano. A redução das áreas destinadas a alimentação de gado, que competem com a produção de culturas para alimentação humana direta, é uma das abordagens para reduzir estes impactos ambientais negativos e reforçar a segurança alimentar futura. As pastagens mediterrâneas, tais como as dehesas e montados, enfrentam desafios consideráveis. O pastoreio contínuo ocasiona variações sazonais acentuadas da produção herbácea e dificuldades de fornecimento de forragem suficiente ao longo do ano. Assim, a dependência de fontes externas de alimento compromete a rentabilidade de muitas explorações. O desenvolvimento de sistemas de pastoreio melhor adaptados é essencial para uma maior resiliência das dehesas e montados.
Perceptions of successful ageing in Sri Lankan older people: A qualitative study
Creators: name: Rajapakse, H
name: Ranabahu, S
name: Perera, B
name: Maselko, J
name: Ostbye, T
name: Watt, M
Publisher: name: Hong Kong Academy of Medicine Press
Year: 2015

description: Background. This study explores the opinions and views of Sri Lankan older people about successful ageing. Methods. 30 females and 28 males aged 63 to 85 (median, 69) years recruited from 4 locations in a southern district in Sri Lanka participated in 8 focus groups (4 in rural and 4 in urban). Each focus group contained a single sex of participants so as to enable women to express their views freely. Discussions were audio recorded and transcribed. Transcripts were independently reviewed by the researchers and recurring themes were identified and coded using a content analysis approach. Analytic memos were prepared to elaborate on the themes and identify exemplary quotes. Results. Four major themes related to successful ageing were identified: (1) being physically active and healthy, (2) being free from burdens and responsibilities, (3) having fulfilling family relationships, and (4) pursuing spiritual development. In addition, a living environment conducive to physical activity and charitable work, and living with children were identified as facilitators of successful ageing. Economic hardship, having unsettled and vulnerable children, disrespect by the community, limited access to health care, and negative attitudes of health service providers towards older people were identified as important barriers to successful ageing. Conclusions. Strategies that can improve the quality of life of Sri Lankan older people include increased community awareness of population ageing and expectations of older people, a strengthened primary health care system that caters to their needs, and development of support systems for home-based care.
Weak representability of actions of non-associative algebras
Creators: name: Brox, Jose
name: García-Martínez, Xabier
name: Mancini, Manuel
name: Van der Linden, Tim
name: Vienne, Corentin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Category Theory (math.CT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 08A35, 08C05, 16B50, 16W25, 17A32, 17A36, 18C05, 18E13

description: We study the categorical-algebraic condition that internal actions are weakly representable (WRA) in the context of varieties of (non-associative) algebras over a field.
 Our first aim is to give a complete characterization of action accessible, operadic quadratic varieties of non-associative algebras which satisfy an identity of degree two and to study the representability of actions for them. Here we prove that the varieties of two-step nilpotent (anti-)commutative algebras and that of commutative associative algebras are weakly action representable, and we explain that the condition (WRA) is closely connected to the existence of a so-called amalgam.
 Our second aim is to work towards the construction, still within the context of algebras over a field, of a weakly representing object $E(X)$ for the actions on (or split extensions of) an object $X$. We actually obtain a partial algebra $E(X)$, which we call external weak actor of $X$, together with a monomorphism of functors ${\operatorname{SplExt}(-,X) \rightarrowtail \operatorname{Hom}(U(-),E(X))}$, which we study in detail in the case of quadratic varieties. Furthermore, the relations between the construction of the universal strict general actor $\operatorname{USGA}(X)$ and that of $E(X)$ are described in detail. We end with some open questions.
description: Final version, accepted for publication
Implementation Augmented Reality Technology on the Eruption of Mountain Merapi as an Educational Media for Natural Disaster Knowledge at the Merapi Volcano Museum in Yogyakarta
Creators: name: Jayadianti, Herlina
name: Suyanto, Budi Mr.
name: Nugroho, Arif Rianto Budi
Publisher: name: Zenodo
Year: 2024

description: This material has been presented on 3rd International Conference on Advanced Research in Engineering and Technology 2024 October 23 - 24, 2024.
A data-driven iteratively regularized Landweber iteration
Creators: name: Aspri, Andrea
name: Banert, Sebastian
name: Öktem, Ozan
name: Scherzer, Otmar
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65J20 (65J10, 65J15, 65J22)

description: We derive and analyse a new variant of the iteratively regularized Landweber iteration, for solving linear and nonlinear ill-posed inverse problems. The method takes into account training data, which are used to estimate the interior of a black box, which is used to define the iteration process. We prove convergence and stability for the scheme in infinite dimensional Hilbert spaces. These theoretical results are complemented by several numerical experiments for solving linear inverse problems for the Radon transform and a nonlinear inverse problem for Schlieren tomography.
Contribution of generative leisure activities to cognitive function in elderly Sri Lankan adults
Creators: name: Sebranek, M
name: Mun, M.H
name: Østbye, T
name: Maselko, J
name: Ahs, J
name: Perera, B
Publisher: name: Blackwell Publishing Inc.
Year: 2014

description: Objectives To examine the unique contribution of generative leisure activities, defined as activities motivated by a concern for others and a need to contribute something to the next generation. Design Cross-sectional survey. Setting Peri-urban and rural area in southern Sri Lanka. Participants Community-dwelling adults aged 60 and older (N = 252). Measurements The main predictors were leisure activities, grouped into generative, social, or solitary. The main outcome was cognitive function, assessed using the Montreal Cognitive Assessment (MoCA) and the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE). Results More-frequent engagement in generative leisure activities was associated with higher levels of cognitive function, independent of the effect of other social and solitary leisure activities. In a fully adjusted model combining all three leisure activities, generative activities independently predicted cognitive function as measured using the MoCA (β = 0.47, 95% confidence interval (CI) = 0.11-0.83) and the IQCODE (β = -0.81, 95% CI = -1.54 to -0.09). In this combined model, solitary activities were also independently associated with slower cognitive decline using the MoCA (β = 0.40, 95% CI = 0.16-0.64) but not the IQCODE (β = -0.38, 95% CI = -0.88-0.12); the association with social activities did not reach statistical significance with either measure. These associations did not differ meaningfully according to sex. Conclusion Generative leisure activities are a promising area for the development of interventions aimed at reducing cognitive decline in elderly adults.
QBDT, a new boosting decision tree method with systematic uncertainties into training for High Energy Physics
Creators: name: Xia, Li-Gang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A new boosting decision tree (BDT) method, QBDT, is proposed for the classification problem in the field of high energy physics (HEP). In many HEP researches, great efforts are made to increase the signal significance with the presence of huge background and various systematical uncertainties. Why not develop a BDT method targeting the significance directly? Indeed, the significance plays a central role in this new method. It is used to split a node in building a tree and to be also the weight contributing to the BDT score. As the systematical uncertainties can be easily included in the significance calculation, this method is able to learn about reducing the effect of the systematical uncertainties via training. Taking the search of the rare radiative Higgs decay in proton-proton collisions $pp \to h + X \to γτ^+τ^-+X$ as example, QBDT and the popular Gradient BDT (GradBDT) method are compared. QBDT is found to reduce the correlation between the signal strength and systematical uncertainty sources and thus to give a better significance. The contribution to the signal strength uncertainty from the systematical uncertainty sources using the new method is 50-85~\% of that using the GradBDT method.
description: 29 pages, accepted for publication in NIMA, algorithm available at https://github.com/xialigang/QBDT
T>0 properties of the infinitely repulsive Hubbard model for arbitrary number of holes
Creators: name: Gurin, Peter
name: Gulacsi, Zsolt
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Based on representations of the symmetric group $S_N$, explicit and exact Schrödinger equation is derived for $U=\infty$ Hubbard model in any dimensions with arbitrary number of holes, which clearly shows that during the movement of holes the spin background of electrons plays an important role. Starting from it, at T=0 we have analyzed the behaviour of the system depending on the dimensionality and number of holes. Based on the presented formalism thermodynamic quantities have also been expressed using a loop summation technique in which the partition function is given in terms of characters of $S_N$. In case of the studied finite systems, the loop summation have been taken into account exactly up to the 14-th order in reciprocal temperature and the results were corrected in higher order based on Monte Carlo simulations. The obtained results suggest that the presented formalism increase the efficiency of the Monte Carlo simulations as well, because the spin part contribution of the background is automatically taken into account by the characters of $S_N$.
description: 26 pages, 1 embedded ps figure; Phil. Mag. B (in press)
Tensor stable moduli stacks and refined representations of quivers
Creators: name: Abdelgadir, Tarig
name: Chan, Daniel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper, we look at the problem of modular realisations of derived equivalences, and more generally, the problem of recovering a Deligne-Mumford stack $\mathbb{X}$ and a bundle $\mathcal{T}$ on it, via some moduli problem (on $\mathbb{X}$ or $A = \operatorname{End}_{\mathbb{X}} \mathcal{T}$). The key issue is, how does one incorporate some of the monoidal structure of $\operatorname{Coh}(\mathbb{X})$ into the moduli problem. To this end, we introduce a new moduli stack, the tensor stable moduli stack which generalises the notion of the Serre-stable moduli stack. We then show how it can be used both for stack recovery and the modular realisation problem for derived equivalences. We also study the moduli of refined representations and how it addresses these problems. Finally, we relate the two approaches when $\mathcal{T}$ is a tilting bundle which is a direct sum of line bundles.
description: 27 pages, comments are welcome
Correlates of handgrip strength and activities of daily living in elderly Sri Lankans
Creators: name: Maselko, J
name: Østbye, T
name: Malhotra, R
name: Perera, B
name: Ukegbu, U
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Sri Lanka is one of the most rapidly aging countries in Asia. As life expectancy continues to increase, projected to reach 71.1 and 80.8 years for men and women respectively by 2016, it is important to better understand which factors impact the health of its elderly. Handgrip strength (HGS) and Activities of Daily Living (ADL) are measures of physical strength and functional capability that are correlated with overall health in the elderly. Gender, age, education, psychological distress, cognitive function, self-rated health (SRH), and comorbidities have frequently been associated with HGS and ADL in Western populations. However, it is unclear whether these associations are present in Sri Lanka’s elderly, especially since ethnic differences have been found in previous studies and no studies have assessed these associations in this population. Therefore, we aim to determine the extent to which characteristics found to be significant predictors of HGS and ADL in other populations are also important correlates among elderly Sri Lankans.
On Arithmetical Structures on Complete Graphs
Creators: name: Harris, Zachary
name: Louwsma, Joel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11D68 (Primary) 05C50, 11A41 (Secondary)

description: An arithmetical structure on the complete graph $K_n$ with $n$ vertices is given by a collection of $n$ positive integers with no common factor each of which divides their sum. We show that, for all positive integers $c$ less than a certain bound depending on $n$, there is an arithmetical structure on $K_n$ with largest value $c$. We also show that, if each prime factor of $c$ is greater than $(n+1)^2/4$, there is no arithmetical structure on $K_n$ with largest value $c$. We apply these results to study which prime numbers can occur as the largest value of an arithmetical structure on $K_n$.
description: 10 pages; v3: minor corrections