cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The impact of pre-supernova feedback and its dependence on environment
Creators: name: Mcleod, Anna F.
name: Ali, Ahmad A.
name: Chevance, Mélanie
name: Della Bruna, Lorenza
name: Schruba, Andreas
name: Stevance, Heloise F.
name: Adamo, Angela
name: Kruijssen, J. M. Diederik
name: Longmore, Steven N.
name: Weisz, Daniel R.
name: Zeidler, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Integral field units enable resolved studies of a large number of star-forming regions across entire nearby galaxies, providing insight on the conversion of gas into stars and the feedback from the emerging stellar populations over unprecedented dynamic ranges in terms of spatial scale, star-forming region properties, and environments. We use the VLT/MUSE legacy data set covering the central $35$ arcmin$^{2}$ (${\sim}12$ kpc$^{2}$) of the nearby galaxy NGC 300 to quantify the effect of stellar feedback as a function of the local galactic environment. We extract spectra from emission line regions identified within dendrograms, combine emission line ratios and line widths to distinguish between HII regions, planetary nebulae, and supernova remnants, and compute their ionised gas properties, gas-phase oxygen abundances, and feedback-related pressure terms. For the HII regions, we find that the direct radiation pressure ($P_\mathrm{dir}$) and the pressure of the ionised gas ($P_{HII}$) weakly increase towards larger galactocentric radii, i.e. along the galaxy's (negative) abundance and (positive) extinction gradients. While the increase of $P_{HII}$ with galactocentric radius is likely due to higher photon fluxes from lower-metallicity stellar populations, we find that the increase of $P_\mathrm{dir}$ is likely driven by the combination of higher photon fluxes and enhanced dust content at larger galactocentric radii. In light of the above, we investigate the effect of increased pre-supernova feedback at larger galactocentric distances (lower metallicities and increased dust mass surface density) on the ISM, finding that supernovae at lower metallicities expand into lower-density environments, thereby enhancing the impact of supernova feedback.
description: Accepted for publication in MNRAS
Rabi model beyond the rotating wave approximation: generation of photons from vacuum through decoherence
Creators: name: Werlang, T.
name: Dodonov, A. V.
name: Duzzioni, E. I.
name: Villas-Boas, C. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We study numerically the dynamics of the Rabi Hamiltonian, describing the interaction of a single cavity mode and a two-level atom without the rotating wave approximation, subjected to damping and dephasing reservoirs included via usual Lindblad superoperators in the master equation. We show that the combination of the antirotating term and the atomic dephasing leads to linear asymptotic photons generation from vacuum. We reveal the origins of the phenomenon and estimate its importance in realistic situations.
description: 7 pages, 5 figures
High-Tc Superconductivity in some Heavy Rare-earth Iron-arsenide REFeAsO1-delta(RE = Ho, Y, Dy and Tb) Compounds
Creators: name: Yang, Jie
name: Shen, Xiao-Li
name: Lu, Wei
name: Yi, Wei
name: Li, Zheng-Cai
name: Ren, Zhi-An
name: Che, Guang-Can
name: Dong, Xiao-Li
name: Sun, Li-Ling
name: Zhou, Fang
name: Zhao, Zhong-Xian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: New iron-arsenide superconductors of REFeAsO1-delta (RE = Ho, Y, Dy and Tb) were successfully synthesized by a high pressure synthesizing method with a special rapid quenching process, with the onset superconducting critical temperatures at 50.3 K, 46.5 K, 52.2K and 48.5 K for RE = Ho, Y, Dy and Tb respectively.
Spreadsheet Components For All
Creators: name: Paine, Jocelyn
Publisher: name: arXiv
Year: 2008
Subjects: subject: Software Engineering (cs.SE)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: We have prototyped a "spreadsheet component repository" Web site, from which users can copy "components" into their own Excel or Google spreadsheets. Components are collections of cells containing formulae: in real life, they would do useful calculations that many practitioners find hard to program, and would be rigorously tested and documented. Crucially, the user can tell the repository which cells in their spreadsheet to use for a componen's inputs and outputs. The repository will then reshape the component to fit. A single component can therefore be used in many different sizes and shapes of spreadsheet. We hope to set up a spreadsheet equivalent of the high-quality numerical subroutine libraries that revolutionised scientific computing, but where instead of subroutines, the library contains such components.
description: 19 Pages
Mungbean residue effects on the growth parameters of a succeeding mungbean crop
Creators: name: Bantilan, Roberto T.
Publisher: name: University of British Columbia
Year: 2010

description: Investigations of mungbean (vigna radiata (L.)Wilczek) residues, which have been found to have adverse effects and cause substantial yield reduction on subsequent mungbean crops grown in rapid rotation, were undertaken to determine the source of phytotoxin and study its effects on growth parameters. There was no effect on plants grown in pots of steam-sterilized soil that had received leachates from actively growing mungbean plants in sand culture, or in pots that had received leachates of roots and leaves decomposing in sand. Effects from residues of previous mungbean crops were demonstrated when succeeding mungbean crops were grown such that their roots were in direct physical contact with the residue. Plants grown in soil in which root-leaf residue mix had been incubated for one week prior to seeding were about 50% of control in total dry weight at any sampling date. Total dry weight was further reduced to about 40% when incubation time was increased to three weeks. Separate experiments with root and leaf residues showed that leaf residues were about 12.3% more toxic than root residues on a proportionate residue weight basis. The combination of leaf and root residues did not show additive effects. Incorporation of the residues into the soil prevented normal seedling development. Plants growing from residue-treated soil had more assimilates allocated to the leaves during the vegetative stage compared to those from residue-free soil. During this stage net assimilation rate, relative growth rate, relative leaf area growth rate, and leaf area ratio became considerably greater than for controls. Although, relative leaf area growth rate was increased, which may have been due to more assimilates being allocated to the leaves, the greater magnitude of the increase in relative growth rate over that of the relative leaf area growth rate may account for the increase in the value of net assimilation rate. This would be possible if there was a reduction in respiratory losses, caused by the release of a respiratory inhibitor from the residues.
Deflated and restarted symmetric Lanczos methods for eigenvalues and linear equations with multiple right-hand sides
Creators: name: Abdel-Rehim, Abdou M.
name: Morgan, Ronald B.
name: Nicely, Dywayne A.
name: Wilcox, Walter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A deflated restarted Lanczos algorithm is given for both solving symmetric linear equations and computing eigenvalues and eigenvectors. The restarting limits the storage so that finding eigenvectors is practical. Meanwhile, the deflating from the presence of the eigenvectors allows the linear equations to generally have good convergence in spite of the restarting. Some reorthogonalization is necessary to control roundoff error, and several approaches are discussed. The eigenvectors generated while solving the linear equations can be used to help solve systems with multiple right-hand sides. Experiments are given with large matrices from quantum chromodynamics that have many right-hand sides.
description: 20 pages, 13 figures
Medium-mass nuclei from chiral nucleon-nucleon interactions
Creators: name: Hagen, G.
name: Papenbrock, T.
name: Dean, D. J.
name: Hjorth-Jensen, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute the binding energies, radii, and densities for selected medium-mass nuclei within coupled-cluster theory and employ the "bare" chiral nucleon-nucleon interaction at order N3LO. We find rather well-converged results in model spaces consisting of 15 oscillator shells, and the doubly magic nuclei 40Ca, 48Ca, and the exotic 48Ni are underbound by about 1 MeV per nucleon within the CCSD approximation. The binding-energy difference between the mirror nuclei 48Ca and 48Ni is close to theoretical mass table evaluations. Our computation of the one-body density matrices and the corresponding natural orbitals and occupation numbers provides a first step to a microscopic foundation of the nuclear shell model.
description: 5 pages, 5 figures
A Primer on Spreadsheet Analytics
Creators: name: Grossman, Thomas A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Software Engineering (cs.SE)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper provides guidance to an analyst who wants to extract insight from a spreadsheet model. It discusses the terminology of spreadsheet analytics, how to prepare a spreadsheet model for analysis, and a hierarchy of analytical techniques. These techniques include sensitivity analysis, tornado charts,and backsolving (or goal-seeking). This paper presents native-Excel approaches for automating these techniques, and discusses add-ins that are even more efficient. Spreadsheet optimization and spreadsheet Monte Carlo simulation are briefly discussed. The paper concludes by calling for empirical research, and describing desired features spreadsheet sensitivity analysis and spreadsheet optimization add-ins.
description: 12 Pages, 8 Colour Figures
title: Rapport annuel
title: Rapport annuel
titleType: AlternativeTitle
Creators: name: Université De Lausanne (UNIL)
Publisher: name: Université de Lausanne
Year: 0

description: A cause de la pandémie COVID-19, les rapports annuels des années 2019 et 2020 sont publiés uniquement sous la forme de page internet sur le site de l'UNIL.
Spreadsheet End-User Behaviour Analysis
Creators: name: Bishop, Brian
name: McDaid, Kevin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Software Engineering (cs.SE)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: To aid the development of spreadsheet debugging tools, a knowledge of end-users natural behaviour within the Excel environment would be advantageous. This paper details the design and application of a novel data acquisition tool, which can be used for the unobtrusive recording of end-users mouse, keyboard and Excel specific actions during the debugging of Excel spreadsheets. A debugging experiment was conducted using this data acquisition tool, and based on analysis of end-users performance and behaviour data, the authors developed a "spreadsheet cell coverage feedback" debugging tool. Results from the debugging experiment are presented in terms of enduser debugging performance and behaviour, and the outcomes of an evaluation experiment with the debugging tool are detailed.
description: 12 Pages, 13 Figures
Reconstruction of the Transmission Coefficient for Steplike Finite-Gap Backgrounds
Creators: name: Egorova, Iryna
name: Teschl, Gerald
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 30E20, 30F30, 34L25, 47B36

description: We consider scattering theory for one-dimensional Jacobi operators with respect to steplike quasi-periodic finite-gap backgrounds and show how the transmission coefficient can be reconstructed from minimal scattering data. This generalizes the Poisson-Jensen formula for the classical constant background case.
description: 9 pages
Canadian Gallup Omnibus Poll November 1994
Creators: name: Inc., The Canadian Gallup Poll
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Federal election/party(4); Jean Chretien job performance(1); Lucien Bouchard(1); Preston Manning(1); economic conditions(2); deficit(8); confidence in federal government(2); National Hockey League(2); police(2).
Shell revealed in SN 1979C
Creators: name: Bartel, N.
name: Bietenholz, M. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: VLBI observations at 5 GHz have revealed that supernova 1979C, in the galaxy M100 in the Virgo cluster, has shell structure. The shell is approximately circular with the 50% contour deviating from a circle by an rms of no more than 8% of the radius. The brightness distribution along the ridge may vary. The position of the center of the shell is at R.A.=12h 22m 58.66758s and decl.=15^o 47' 51.9695" (J2000), with a standard error of 0.8 mas in each of the coordinates. No isolated central component is visible above a flux density limit of ~0.15 mJy which corresponds to an upper limit of ~15 times the corresponding spectral luminosity of the Crab Nebula. The radio lightcurve is clearly falling again and the radio spectrum is now flatter than at earlier times. SN 1979C is only the fourth, and oldest (optically identified) supernova of which a detailed image could be obtained.
description: 6 pages, 3 figures, accepted for publication in ApJ
The Grape Industry: A Selected List of References on the Economic Aspects of the Industry in the United States, 1920-1931
Creators: name: Hitz, Vajen E.
name: Hitz, Vajen E.
Publisher: name: Unknown
Year: 1932
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Excerpts from the Preface: This bibliography includes references to publications dealing with the economic aspects of the grape industry in the United States since January, 1920. The references cover not only grapes, but raisins, currant grapes, and a few grape products. Foreign publications have been omitted except some which deal with foreign markets for American products. The references are to publications in the library of the United States Department of Agriculture and to a few publications in the Library of Congress. The call numbers used in the library of the United States Department of Agriculture have been given in most cases. The reports, proceedings, and transactions, from 1920 to date, of the horticultural societies of the principal grape-growing States were examined for important references to the economic aspects of the industry. No effort was made to search the statutes of each State for laws affecting the grape industry, but when such references were found they were included. The Agricultural Census for 1925 only has been included, as the publication of the returns from the 1930 Census had not been completed when this bibliography was compiled.
Towards Node Liability in Federated Learning: Computational Cost and Network Overhead
Creators: name: Malandrino, Francesco
name: Chiasserini, Carla Fabiana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Many machine learning (ML) techniques suffer from the drawback that their output (e.g., a classification decision) is not clearly and intuitively connected to their input (e.g., an image). To cope with this issue, several explainable ML techniques have been proposed to, e.g., identify which pixels of an input image had the strongest influence on its classification. However, in distributed scenarios, it is often more important to connect decisions with the information used for the model training and the nodes supplying such information. To this end, in this paper we focus on federated learning and present a new methodology, named node liability in federated learning (NL-FL), which permits to identify the source of the training information that most contributed to a given decision. After discussing NL-FL's cost in terms of extra computation, storage, and network latency, we demonstrate its usefulness in an edge-based scenario. We find that NL-FL is able to swiftly identify misbehaving nodes and to exclude them from the training process, thereby improving learning accuracy.
Polarimetric Sensitivity of Light-Absorbing Carbonaceous Aerosols Over Ocean: A Theoretical Assessment
Creators: name: Zhang, Chenchong
name: Heinson, William R.
name: Garay, Michael J.
name: Kalashnikova, Olga
name: Chakrabarty, Rajan K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Visible-light-absorbing carbonaceous aerosols within the boundary layer affect the radiance and polarization states of the radiation at the top of the atmosphere. Remote sensing from suborbital and satellite-based platforms utilizes these radiance and polarization signals to retrieve the key properties of these aerosols. Recent retrieval algorithms have shown a progressive trend toward including multi-angular and multi-spectral polarimetric measurements to produce better retrieval accuracy in comparison to those using measurements based on a single viewing angle. Here, we perform a theoretical investigation of the top of atmosphere (TOA) radiance-related reflectance factor (bidirectional reflectance factor (BRF)) and the two types of polarimetry-related factors (polarized bidirectional reflectance factor (pBRF) and the degree of linear polarization (DoLP)) for different types of atmospheric light-absorbing carbonaceous aerosols as a function of particle size distribution. We selected three polarimetric bands corresponding to those utilized by NASA Airborne Multiangle SpectroPolarimetric Imager (AirMSPI) -- near-UV (470 nm), visible (660 nm), and near-infrared (865 nm) -- for our simulations which were performed over ocean surface using the successive order of scattering (SOS) algorithm coupled to a Lorenz-Mie aerosol optics model. The analysis of particle phase matrix elements indicates a close relationship between the angular dependencies of DoLP and associated phase matrix components at the shortest polarimetric band (470 nm). Using Jacobian analysis, we find that the radiance- and polarimetry-related reflectance factors of weakly light-absorbing aerosols, such as brown carbon, are more sensitive to changes in particle size and imaginary refractive index in comparison with those of black carbon, which is strongly light-absorbing.
description: Includes main text and supplementary material
Simulation of traffic flow at a signalised intersection
Creators: name: Foulaadvand, M. Ebrahim
name: Belbaasi, Sommayeh
Publisher: name: arXiv
Year: 2008
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We have developed a Nagel-Schreckenberg cellular automata model for describing of vehicular traffic flow at a single intersection. A set of traffic lights operating either in fixed-time or traffic adaptive scheme controls the traffic flow. Closed boundary condition is applied to the streets each of which conduct a uni-directional flow. Extensive Monte Carlo simulations are carried out to find the model characteristics. In particular, we investigate the dependence of the flows on the signalisation parameters.
description: 7 pages, 11 eps figures, Revtex
title: Les infos de l'eSSPace
title: Les infos de l'eSSPace
titleType: AlternativeTitle
Creators: name: Université De Lausanne (UNIL)
Publisher: name: Faculté des sciences sociales et politiques
Year: 2016

description: Après le N° 8, la revue parait uniquement au format numérique sur le site internet de l'UNIL.
A critical analysis of the thesis of the symmetry between explanation and prediction : including a case study of evolutionary theory
Creators: name: Lee, Robert Wai-Chung
Publisher: name: University of British Columbia
Year: 2010

description: One very significant characteristic of Hempel's covering-law models of scientific explanation, that is, the deductive-nomological model and the inductive-statistical model, is the supposed symmetry between explanation and prediction. In brief, the symmetry thesis asserts that explanation and prediction have the same logical structure; in other words, if an explanation of an. event had been taken account of in time, then it could have served as a basis for predicting the event in question, and vice versa. The present thesis is a critical analysis of the validity of this purported symmetry between explanation and prediction. The substance of the thesis begins with a defence against some common misconceptions of the symmetry thesis, for example, the idea that the symmetry concerns statements but not arguments. Specifically, Grunbaum's interpretation of the symmetry thesis as pertaining to the logical inferability rather than the epistemological symmetry between explanation and prediction is examined. The first sub-thesis of the symmetry thesis, namely that "Every adequate explanation is a potential prediction," is then analyzed. Purported counterexamples such as evolutionary theory and the paresis case are critically examined and consequently dismissed. Since there are conflicting views regarding the nature of explanation and prediction in evolutionary theory, a case study of the theory is also presented. Next, the second sub-thesis of the symmetry thesis, namely that "Every adequate prediction is a potential explanation," is discussed. In particular, the barometer case is discharged as a counterexample to the second sub-thesis when the explanatory power of indicator laws is properly understood. Finally, Salmon's current causal-relevance model of explanation, which claims to be an alternative to Hempel's inductive-statistical model, is critically analyzed. A modified inductive-statistical model of explanation is also proposed. This modified model retains the nomological ingredient of Hempel's original inductive-statistical model, but it is immune to criticisms raised against the latter. In conclusion, I maintain that there is indeed a symmetry between explanation and prediction. But since deductive-nomological explanation and prediction are essentially different from inductive-statistical explanation and prediction, the form the symmetry takes between deductive-nomological explanation and prediction differs from the form it exhibits between inductive-statistical explanation and prediction.
Towards a Cross-Domain Software Safety Assurance Process for Embedded Systems
Creators: name: Zeller, Marc
name: Hoefig, Kai
name: Rothfelder, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In this work, we outline a cross-domain assurance process for safety-relevant software in embedded systems. This process aims to be applied in various different application domains and in conjunction with any development methodology. With this approach we plan to reduce the growing effort for safety assessment in embedded systems by reusing safety analysis techniques and tools for the product development in different domains.
Role of Parallel Solenoidal Electric Field on Energy Conversion in 2.5D Decaying Turbulence with a Guide Magnetic Field
Creators: name: Pongkitiwanichakul, Peera
name: Ruffolo, David
name: Guo, Fan
name: Du, Senbei
name: Suetrong, Piyawat
name: Yannawa, Chutima
name: Makwana, Kirit
name: Malakit, Kittipat
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We perform 2.5D particle-in-cell simulations of decaying turbulence in the presence of a guide (out-of-plane) background magnetic field. The fluctuating magnetic field initially consists of Fourier modes at low wavenumbers (long wavelengths). With time, the electromagnetic energy is converted to plasma kinetic energy (bulk flow+thermal energy) at the rate per unit volume of ${\pp J}\cdot{\pp E}$ for current density ${\pp J}$ and electric field ${\pp E}$. Such decaying turbulence is well known to evolve toward a state with strongly intermittent plasma current. Here we decompose the electric field into components that are irrotational, ${\pp E}_{\rm ir}$, and solenoidal (divergence-free), ${\pp E}_{\rm so}$. ${\pp E}_{\rm ir}$ is associated with charge separation, and ${\pp J}\cdot{\pp E}_{\rm ir}$ is a rate of energy transfer between ions and electrons with little net change in plasma kinetic energy. Therefore, the net rate of conversion of electromagnetic energy to plasma kinetic energy is strongly dominated by ${\pp J}\cdot{\pp E}_{\rm so}$, and for a strong guide magnetic field, this mainly involves the component ${\pp E}_{\rm so,\parallel}$ parallel to the total magnetic field ${\pp B}$. We examine various indicators of the spatial distribution of the energy transfer rate {\bf J$_\parallel\cdot$E$_{so,\parallel}$}, which relates to magnetic reconnection, the best of which are 1) the ratio of the out-of-plane electric field to the in-plane magnetic field, 2) the out-of-plane component of the non-ideal electric field, and 3) the magnitude of the estimate of current helicity.
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Parida, Laxmi
name: Ukkonen, Esko
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 113, 18th International Workshop on Algorithms in Bioinformatics (WABI 2018), pages 0:i-0:xvi
Relative Ages of Nine Inner Milky Way Globular Clusters from Proper Motion Cleaned Color-Magnitude Diagrams
Creators: name: Cohen, Roger E.
name: Bellini, Andrea
name: Casagrande, Luca
name: Brown, Thomas M.
name: Correnti, Matteo
name: Kalirai, Jason S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Our picture of the age-metallicity relation for Milky Way globular clusters (MWGCs) is still highly incomplete, and the majority of MWGCs lack self-consistent age measurements. Here, we exploit deep, homogenous multi-epoch Hubble Space Telescope (HST) imaging of nine MWGCs located towards the inner Milky Way to measure their relative ages, in most cases for the first time. Our relative age measurements are designed to be directly comparable to the large set of MWGC ages presented by VandenBerg et al. (2013, V13), using identical filters, evolutionary models, and bolometric corrections, extended to the higher extinction values relevant to our target clusters. Adopting the V13 MWGC age scale, our relative age measurements imply that our target clusters are consistently very old, with a mean age of 12.9$\pm$0.4 Gyr, with the exception of the young metal-rich MWGC NGC 6342. We perform two tests to validate the precision of our methodology, and discuss the implications of our target cluster loci in the MWGC age-metallicity plane. In addition, we use our fully self-consistent bolometric corrections to assess the systematic impact of variations in the total-to-selective extinction ratio $R_{V}$ on relative age measurements.
description: AJ Accepted. 15 pages, 5 figures, 3 tables
Fast and Scalable Optimal Transport for Brain Tractograms
Creators: name: Feydy, Jean
name: Roussillon, Pierre
name: Trouvé, Alain
name: Gori, Pietro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We present a new multiscale algorithm for solving regularized Optimal Transport problems on the GPU, with a linear memory footprint. Relying on Sinkhorn divergences which are convex, smooth and positive definite loss functions, this method enables the computation of transport plans between millions of points in a matter of minutes. We show the effectiveness of this approach on brain tractograms modeled either as bundles of fibers or as track density maps. We use the resulting smooth assignments to perform label transfer for atlas-based segmentation of fiber tractograms. The parameters -- blur and reach -- of our method are meaningful, defining the minimum and maximum distance at which two fibers are compared with each other. They can be set according to anatomical knowledge. Furthermore, we also propose to estimate a probabilistic atlas of a population of track density maps as a Wasserstein barycenter. Our CUDA implementation is endowed with a user-friendly PyTorch interface, freely available on the PyPi repository (pip install geomloss) and at www.kernel-operations.io/geomloss.
description: MICCAI 2019
Data Management and Data Literacy
Creators: name: Kostadinov, Ivaylo
name: Tschink, Daniel
name: Linares Gómez, Jimena
Publisher: name: Zenodo
Year: 2025
Subjects: Research Data Management
Biodiversity Data
NFDI4BiodiversityiDivSeasonalSchool2024

description: This lecture was part of the NFDI4Biodiversity & iDiv Seasonal School on Data Management in Biodiversity and Environmental Science introduces key principles of data management and data literacy, emphasizing best practices for organizing, storing, and handling data according to FAIR principles. You will explore various data types in biodiversity and environmental science and learn how to align your research data management (RDM) strategies with funding requirements and institutional policies.

The NFDI4Biodiversity & iDiv Seasonal School on Data Management in Biodiversity and Environmental Science was a collaboration between the German Centre for Integrative Biodiversity Research (iDiv) and the NFDI4Biodiversity consortium. This course offered cutting-edge skills and knowledge essential for handling scientific data throughout its life cycle. The intensive five-day program combined direct knowledge transfer with practical lessons to introduce participants to fundamental and advanced tools in research data management (RDM), tailored to enhance their future careers.
The effect of feeding management during the growing and laying periods on productivity and the characteristics of adipose tissue of the broiler breeders
Creators: name: Chu, Stanley Soon-Wai
Publisher: name: University of British Columbia
Year: 2010

description: The present experiment was undertaken to study the egg production and abdominal fat accumulation of broiler breeder female chickens which had been subjected to different feeding management procedures. Broiler breeder female chicks (1022) were divided into two populations. One population was fed between 8 and 10 a.m. using conventional feeders. The other population was fed twice daily the same amount of feed as the feeder-fed population but given feed broadcast on the litter between 8 a.m. and 10 p.m. and between 3:30 p.m. and 4:30 p.m. Physical activity and the extension of feeding time of the floor-fed population were therefore greater than was the case with the feeder-fed population. The floor-fed brids were lighter in weight under ad libitum feeding from 2 to 4 weeks of age. Thereafter the floor-fed birds were heavier under quantitative feed restriction. At 18 weeks of age each population was divided into four groups, heaviest, upper medium, lower medium and lightest, based on body weight. The birds of the lighter groups subsequently grew faster than those of the heavier groups and by 47 weeks of age the weights were not significantly different. The amount and proportion (% of body weight) of abdominal fat in the floor-fed pullets at 26-27 weeks of age were higher than in the feeder-fed pullets. Abdominal fat increased with increased body weight in those groups of pullets which gained up to 1200 g in body weight after the division at 18 weeks of age, but decreased in proportion to body weight in those groups of pullets which gained in excess of 1200 g. The data suggested that the more vital parts of the body, such as the muscle and skeletal tissues, developed at a faster rate than the abdominal fat pad in the lightest group of pullets. Floor feeding did not affect the age at which the pullets reached sexual maturity. Egg production, calculated on hen-day basis, was similar in all groups. When egg production was calculated on a hen-housed basis, however, the feeder-fed pullets showed a higher rate of egg production than did the floor-fed pullets. Furthermore, the birds of the heavier groups within both feeding systems had a higher rate of production than did the birds in the lighter groups. Floor-fed pullets laid significantly larger eggs than feeder-fed pullets. Egg weight was not significantly different among the four weight-groups of pullets in each feeding system. Birds fed on the litter had lower mortality during the brooding period but thereafter had a higher mortality than did the birds fed from feeders. The major cause of death was gizzard impaction with litter material. Mortality was the highest in the lightest groups on both feeding systems during the laying period.
Link invariants, the chromatic polynomial and the Potts model
Creators: name: Fendley, Paul
name: Krushkal, Vyacheslav
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the connections between link invariants, the chromatic polynomial, geometric representations of models of statistical mechanics, and their common underlying algebraic structure. We establish a relation between several algebras and their associated combinatorial and topological quantities. In particular, we define the chromatic algebra, whose Markov trace is the chromatic polynomial χ_Q of an associated graph, and we give applications of this new algebraic approach to the combinatorial properties of the chromatic polynomial. In statistical mechanics, this algebra occurs in the low temperature expansion of the Q-state Potts model. We establish a relationship between the chromatic algebra and the SO(3) Birman-Murakami-Wenzl algebra, which is an algebra-level analogue of the correspondence between the SO(3) Kauffman polynomial and the chromatic polynomial.
description: 25 pages. v2: section on level-rank duality moved to arXiv:0711.0016 v3: references updated
Molecules with ALMA at Planet-forming Scales (MAPS) VIII: CO Gap in AS 209--Gas Depletion or Chemical Processing?
Creators: name: Alarcón, Felipe
name: Bosman, Arthur
name: Bergin, Edwin
name: Zhang, Ke
name: Teague, Richard
name: Bae, Jaehan
name: Aikawa, Yuri
name: Andrews, Sean M.
name: Booth, Alice
name: Calahan, Jenny
name: Cataldi, Gianni
name: Czekala, Ian
name: Huang, Jane
name: Ilee, John D.
name: Law, Charles J.
name: Gal, Romane Le
name: Liu, Yao
name: Long, Feng
name: Loomis, Ryan A.
name: Ménard, François
name: Öberg, Karin
name: Schwarz, Kamber R.
name: Hoff, Merel L. R. Van't
name: Walsh, Catherine
name: Wilner, David J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Emission substructures in gas and dust are common in protoplanetary disks. Such substructures can be linked to planet formation or planets themselves. We explore the observed gas substructures in AS 209 using thermochemical modeling with RAC2D and high-spatial resolution data from the Molecules with ALMA at Planet-forming Scales(MAPS) program. The observations of C$^{18}$O J=2-1 emission exhibit a strong depression at 88 au overlapping with the positions of multiple gaps in millimeter dust continuum emission. We find that the observed CO column density is consistent with either gas surface-density perturbations or chemical processing, while C$_2$H column density traces changes in the C/O ratio rather than the H$_2$ gas surface density. However, the presence of a massive planet (> 0.2 M$_{Jup}$) would be required to account for this level of gas depression, which conflicts with constraints set by the dust emission and the pressure profile measured by gas kinematics. Based on our models, we infer that a local decrease of CO abundance is required to explain the observed structure in CO, dominating over a possible gap-carving planet present and its effect on the H$_2$ surface density. This paper is part of the MAPS special issue of the Astrophysical Journal Supplement Series.
description: 21 pages, 18 figures
Magnetic Braking and Protostellar Disk Formation: Ambipolar Diffusion
Creators: name: Mellon, Richard R.
name: Li, Zhi-Yun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is established that the formation of rotationally supported disks during the main accretion phase of star formation is suppressed by a moderately strong magnetic field in the ideal MHD limit. Non-ideal MHD effects are expected to weaken the magnetic braking, perhaps allowing the disk to reappear. We concentrate on one such effect, ambipolar diffusion, which enables the field lines to slip relative to the bulk neutral matter. We find that the slippage does not sufficiently weaken the braking to allow rotationally supported disks to form for realistic levels of cloud magnetization and cosmic ray ionization rate; in some cases, the magnetic braking is even enhanced. Only in dense cores with both exceptionally weak fields and unreasonably low ionization rate do such disks start to form in our simulations. We conclude that additional processes, such as Ohmic dissipation or Hall effect, are needed to enable disk formation. Alternatively, the disk may form at late times when the massive envelope that anchors the magnetic brake is dissipated, perhaps by a protostellar wind.
description: 16 pages, 4 figures
Locally Adaptive Structure and Texture Similarity for Image Quality Assessment
Creators: name: Ding, Keyan
name: Liu, Yi
name: Zou, Xueyi
name: Wang, Shiqi
name: Ma, Kede
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The latest advances in full-reference image quality assessment (IQA) involve unifying structure and texture similarity based on deep representations. The resulting Deep Image Structure and Texture Similarity (DISTS) metric, however, makes rather global quality measurements, ignoring the fact that natural photographic images are locally structured and textured across space and scale. In this paper, we describe a locally adaptive structure and texture similarity index for full-reference IQA, which we term A-DISTS. Specifically, we rely on a single statistical feature, namely the dispersion index, to localize texture regions at different scales. The estimated probability (of one patch being texture) is in turn used to adaptively pool local structure and texture measurements. The resulting A-DISTS is adapted to local image content, and is free of expensive human perceptual scores for supervised training. We demonstrate the advantages of A-DISTS in terms of correlation with human data on ten IQA databases and optimization of single image super-resolution methods.
Magnetic field-induced transition in a quantum magnet described by the Quantum Dimer Model
Creators: name: Ralko, A.
name: Becca, F.
name: Poilblanc, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The effect of a magnetic field on a gapped quantum magnet is described within the framework of the Quantum Dimer Model. A minimal model describing the proliferation of itinerant spinons above a critical field is proposed and investigated by Lanczos exact diagonalizations and quantum Monte Carlo simulations. For both square and triangular lattices, it is shown that spinons are fully polarized and Bose-condense. This offers a novel scenario of a Quantum Critical Point in the dimer-liquid phase (triangular lattice) characterized by the continuous appearance of a spinon superfluid density, contrasting with the usual triplet condensation picture. The possible role of other spinon kinetic terms neglected in the model are discussed.
Giant magnetoresistance and topological Hall effect in the EuGa4 antiferromagnet
Creators: name: Zhang, H.
name: Zhu, X. Y.
name: Xu, Y.
name: Gawryluk, D. J.
name: Xie, W.
name: Ju, S. L.
name: Shi, M.
name: Shiroka, T.
name: Zhan, Q. F.
name: Pomjakushina, E.
name: Shang, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on systematic temperature- and magnetic field-dependent studies of the EuGa$_4$ binary compound, which crystallizes in a centrosymmetric tetragonal BaAl$_4$-type structure with space group $I4/mmm$. The electronic properties of EuGa$_4$ single crystals, with an antiferromagnetic (AFM) transition at $T_\mathrm{N} \sim 16.4$ K, were characterized via electrical resistivity and magnetization measurements. A giant nonsaturating magnetoresistance was observed at low temperatures, reaching $\sim 7 \times 10^4$ % at 2 K in a magnetic field of 9 T. In the AFM state, EuGa$_4$ undergoes a series of metamagnetic transitions in an applied magnetic field, clearly manifested in its field-dependent electrical resistivity. Below $T_\mathrm{N}$, in the $\sim$4-7 T field range, we observe also a clear hump-like anomaly in the Hall resistivity which is part of the anomalous Hall resistivity. We attribute such a hump-like feature to the topological Hall effect, usually occurring in noncentrosymmetric materials known to host topological spin textures (as e.g., magnetic skyrmions). Therefore, the family of materials with a tetragonal BaAl$_4$-type structure, to which EuGa$_4$ and EuAl$_4$ belong, seems to comprise suitable candidates on which one can study the interplay among correlated-electron phenomena (such as charge-density wave or exotic magnetism) with topological spin textures and topologically nontrivial bands.
description: 15 pages, 6 figures; to be appeared on JPCM
Lepton flavor violating Higgs decays and unparticle physics
Creators: name: Iltan, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We predict the branching ratios of the lepton flavor violating Higgs decays H^0->e^{\pm} μ^{\pm}, H^0-> e^{\pm} τ^{\pm} and H^0->μ^{\pm} τ^{\pm} in the case that the lepton flavor violation is carried by the scalar unparticle mediation. We observe that their branching ratios are strongly sensitive to the unparticle scaling dimension and they can reach to the values of the order of $10^{-4}$, for the heavy lepton flavor case and for the small values of the scaling dimension.
description: 12 pages, 7 Figures, 1 Tables
The twisted Floer homology of torus bundles
Creators: name: Ai, Yinghua
name: Peters, Thomas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Given a torus bundle $Y$ over the circle and a cohomology class $[ω]\in H^2(Y;\mathbb{Z})$ which evaluates nontrivially on the fiber, we compute the Heegaard Floer homology of $Y$ with twisted coefficients in the universal Novikov ring.
description: 12 pages, 1 figure
The queerest click: a lesson in linguistic marginalia by Drag Queens
Creators: name: Pratchett, Lee J.
Publisher: name: Zenodo
Year: 2021
Subjects: sociophonetics
gender
sexuality
interjections
tongue pop
queer

description: In linguistics as in popular culture, “the periphery” is making its way to the centre stage. The internationally acclaimed RuPaul’s Drag Race (RPDR) has been widely applauded for its contribution to the mainstream visibility of Drag (and LGBT+) subculture over the last decade. In linguistics, certain sounds and words that were long considered marginal and eccentric are also enjoying a heyday (see e.g., Ameka 2020). Clicks are speech sounds that are used phonemically in only a handful of (endangered) languages but occur frequently, perhaps even universally, as paralinguistic expressions. Interjections are words that have long been neglected by language studies: once deemed “non-words”, linguists now see interjections as a core part of language systems. In this presentation, I shall show what we can learn about clicks, about interjections, and what the Queens mean when they tongue pop. Part of the fabulously camp, performative language use of Drag Queens on RPDR, the click interjection known as a “tongue pop” is a small performance in itself: a complex medley of phonetics, gesture, and language to encode a (socio)pragmatically marked and contextually bound expression. In this presentation, I provide a first linguistic analysis of the tongue pop, from its phonetic form to its discourse-pragmatic and sociopragmatic function in the language of Drag Queens (literally) and the international LGBT+ community. I will also discuss what click genesis in Queer English means for certain theories about these phonemic clicks in African languages and language evolution. More generally, this talk serves as an important reminder of the contribution of non-standard language varieties, including genderlects, to the study of spoken language.
description: NB. Updated version (Version 3) includes some edits and acknowledgements.
Controlling End User Computing Applications - a case study
Creators: name: Chambers, Jamie
name: Hamill, John
Publisher: name: arXiv
Year: 2008
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: We report the results of a project to control the use of end user computing tools for business critical applications in a banking environment. Several workstreams were employed in order to bring about a cultural change within the bank towards the use of spreadsheets and other end-user tools, covering policy development, awareness and skills training, inventory monitoring, user licensing, key risk metrics and mitigation approaches. The outcomes of these activities are discussed, and conclusions are drawn as to the need for appropriate organisational models to guide the use of these tools.
description: 9 Pages