cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ion-induced secondary electron emission from metal surfaces
Creators: name: Pamperin, M.
name: Bronold, F. X.
name: Fehske, H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Using a helium ion hitting various metal surfaces as a model system, we describe a general quantum-kinetic approach for calculating ion-induced secondary electron emission spectra at impact energies where the emission is driven by the internal potential energy of the ion. It is based on an effective model of the Anderson-Newns-type for the subset of electronic states of the ion-surface system most strongly affected by the collision. Central to our approach is a pseudo-particle representation for the electronic configurations of the projectile which enables us, by combining it with two additional auxiliary bosons, to describe in a single Hamiltonian emission channels involving electronic configurations with different internal potential energies. It is thus possible to treat Auger neutralization of the ion on an equal footing with Auger de-excitation of temporarily formed radicals and/or negative ions. From the Dyson equations for the projectile propagators and an approximate evaluation of the self-energies, rate equations are obtained for the probabilities with which the projectile configurations occur and an electron is emitted in the course of the collision. Encouraging numerical results, especially for the helium-tungsten system, indicate the potential of the approach.
description: Substantially revised version including now additional charge-transfer channels which make the emission scenario proposed in the first version less likely. It is thus no longer emphasized. Comparision with experiments is now rather favorable. 23 pages, 11 figures
Probing Dynamical Gravity with the Polarization of Continuous Gravitational Waves
Creators: name: Isi, Maximiliano
name: Pitkin, Matthew
name: Weinstein, Alan J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The direct detection of gravitational waves provides the opportunity to measure fundamental aspects of gravity which have never been directly probed before, including the polarization of gravitational waves. In the context of searches for continuous waves from known pulsars, we present novel methods to detect signals of any polarization content, measure the modes present and place upper-limits on the amplitude of non-tensorial components. This will allow us to obtain new model-independent, dynamical constraints on deviations from general relativity. We test this framework on multiple potential sources using simulated data from three advanced-era detectors at design sensitivity. We find that signals of any polarization will become detectable and distinguishable for characteristic strains $h\gtrsim 3\times10^{-27} \sqrt{1~{\rm yr}/T}$, for an observation time $T$. We also find that our ability to detect non-tensorial components depends only on the power present in those modes, irrespective of the strength of the tensorial strain.
description: 27 pages, 23 figures
Hydrodynamic signatures of stationary Marangoni-driven surfactant transport
Creators: name: Mandre, S.
name: Akella, V. S.
name: Singh, D. K.
name: Singh, R. S.
name: Bandi, M. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We experimentally study steady Marangoni-driven surfactant transport on the interface of a deep water layer. Using hydrodynamic measurements, and without using any knowledge of the surfactant physico-chemical properties, we show that sodium dodecyl sulphate and Tergitol 15-S-9 introduced in low concentrations result in a flow driven by adsorbed surfactant. At higher surfactant concentration, the flow is dominated by the dissolved surfactant. Using Camphoric acid, whose properties are {\it a priori} unknown, we demonstrate this method's efficacy by showing its spreading is adsorption dominated.
Tropical Newton-Puiseux polynomials
Creators: name: Grigoriev, Dima
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14T05 14M25

description: We introduce tropical Newton-Puiseux polynomials admitting rational exponents. A resolution of a tropical hypersurface is defined by means of a tropical Newton-Puiseux polynomial. A polynomial complexity algorithm for resolubility of a tropical curve is designed. The complexity of resolubility of tropical prevarieties of arbitrary codimensions is studied. Tropical Newton-Puiseux rational functions are introduced, and we prove that any tropical polynomial has a resolution in tropical Newton-Puiseux rational functions (this can be treated as a tropical analog of the algebraic closedness of the field of Newton-Puiseux series).
description: Conference Computer Algebra in Scientific Computing, Lille. 2018, Lect. Notes Comput. Sci. vol. 11077
Progenitor Model of SN 1987A Based on the Slow Merger Scenario
Creators: name: Urushibata, T.
name: Takahashi, K.
name: Umeda, H.
name: Yoshida, T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Even after elaborate investigations for 30 years, we still do not know well how the progenitor of SN 1987A has evolved. To explain unusual red-to-blue evolution, previous studies suggest that in a red giant stage either the increase of surface He abundance or the envelope mass was necessary. It is usually supposed that the He enhancement is caused by the rotational mixing, and the mass increase is by a binary merger. Thus, we have investigated these scenarios thoroughly. The obtained findings are that rotating single star models do not satisfy all the observational constraints and that the enhancement of envelope mass alone does not explain observations. Here, we consider a slow merger scenario in which both the He abundance and the envelope mass enhancements are expected to occur. We indeed show that most observational constraints such as the red-to-blue evolution, lifetime, total mass, position in the HR diagram at collapse, and the chemical anomalies are well reproduced by the merger model of 14 and 9 M$_{\odot}$ stars. We also discuss the effects of the added envelope spin in the merger scenarios.
description: 2 figures and 1 table. Accepted for publication in MNRAS LETTER
Fidelity of quantum strategies with applications to cryptography
Creators: name: Gutoski, Gus
name: Rosmanis, Ansis
name: Sikora, Jamie
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a definition of the fidelity function for multi-round quantum strategies, which we call the strategy fidelity, that is a generalization of the fidelity function for quantum states. We provide many properties of the strategy fidelity including a Fuchs-van de Graaf relationship with the strategy norm. We also provide a general monotinicity result for both the strategy fidelity and strategy norm under the actions of strategy-to-strategy linear maps. We illustrate an operational interpretation of the strategy fidelity in the spirit of Uhlmann's Theorem and discuss its application to the security analysis of quantum protocols for interactive cryptographic tasks such as bit-commitment and oblivious string transfer. Our analysis is general in the sense that the actions of the protocol need not be fully specified, which is in stark contrast to most other security proofs. Lastly, we provide a semidefinite programming formulation of the strategy fidelity.
description: v2. Accepted version
On multifractals: a non-linear study of actigraphy data
Creators: name: França, Lucas Gabriel Souza
name: Montoya, Pedro
name: Miranda, José Garcia Vivas
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Quantitative Methods (q-bio.QM)
subject: Methodology (stat.ME)
subject: FOS: Physical sciences
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: This work aimed, to determine the characteristics of activity series from fractal geometry concepts application, in addition to evaluate the possibility of identifying individuals with fibromyalgia. Activity level data were collected from 27 healthy subjects and 27 fibromyalgia patients, with the use of clock-like devices equipped with accelerometers, for about four weeks, all day long. The activity series were evaluated through fractal and multifractal methods. Hurst exponent analysis exhibited values according to other studies ($H>0.5$) for both groups ($H=0.98\pm0.04$ for healthy subjects and $H=0.97\pm0.03$ for fibromyalgia patients), however, it is not possible to distinguish between the two groups by such analysis. Activity time series also exhibited a multifractal pattern. A paired analysis of the spectra indices for the sleep and awake states revealed differences between healthy subjects and fibromyalgia patients. The individuals feature differences between awake and sleep states, having statistically significant differences for $α_{q-} - α_{0}$ in healthy subjects ($p = 0.014$) and $D_{0}$ for patients with fibromyalgia ($p = 0.013$). The approach has proven to be an option on the characterisation of such kind of signals and was able to differ between both healthy and fibromyalgia groups. This outcome suggests changes in the physiologic mechanisms of movement control.
description: Preprint accepted for publication at Physica A: Statistical Mechanics and its Applications
Cosmic Ray Diffusion Coefficients Throughout The Inner Heliosphere From Global Solar Wind Simulation
Creators: name: Chhiber, Rohit
name: Subedi, Prachanda
name: Usmanov, Arcadi V.
name: Matthaeus, William H.
name: Ruffolo, David
name: Goldstein, Melvyn L.
name: Parashar, Tulasi N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We use a three-dimensional magnetohydrodynamic simulation of the solar wind to calculate cosmic ray diffusion coefficients throughout the inner heliosphere ($2~R_\odot - 3$ AU). The simulation resolves large-scale solar wind flow, which is coupled to small-scale fluctuations through a turbulence model. Simulation results specify background solar wind fields and turbulence parameters, which are used to compute diffusion coefficients and study their behavior in the inner heliosphere. The parallel mean free path is evaluated using quasi-linear theory, while the perpendicular mean free path is determined by non-linear guiding center theory with the random ballistic interpretation. Several runs examine varying turbulent energy and different solar source dipole tilts. We find that for most of the inner heliosphere, the radial mean free path (mfp) is dominated by diffusion parallel to the mean magnetic field; the parallel mfp remains at least an order of magnitude larger than the perpendicular mfp, except in the heliospheric current sheet, where the perpendicular mfp may be a few times larger than the parallel mfp; in the ecliptic region, the perpendicular mfp may influence the radial mfp at heliocentric distances larger than 1.5 AU; our estimations of the parallel mfp in the ecliptic region at 1 AU agree well with the Palmer "consensus" range of $0.08 - 0.3$ AU; solar activity increases perpendicular diffusion and reduces parallel diffusion; the parallel mfp varies with rigidity $(P)$ as $P^{.33}$, and the perpendicular mfp is weakly dependent on $P$; the mfps are weakly influenced by the choice of long wavelength power spectra.
Phenomenological constraints on $A_N$ in $p^\uparrow p\to π\, X$ from Lorentz invariance relations
Creators: name: Gamberg, Leonard
name: Kang, Zhong-Bo
name: Pitonyak, Daniel
name: Prokudin, Alexei
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a new analysis of $A_N$ in $p^\uparrow p\to π\, X$ within the collinear twist-3 factorization formalism. We incorporate recently derived Lorentz invariance relations into our calculation and focus on input from the kinematical twist-3 functions, which are weighted integrals of transverse momentum dependent (TMD) functions. In particular, we use the latest extractions of the Sivers and Collins functions with TMD evolution to compute certain terms in $A_N$. Consequently, we are able to constrain the remaining contributions from the lesser known dynamical twist-3 correlators.
description: 12 pages, 4 figures, Matches published version in PLB
On the Books: Jim Crow and Algorithms of Resistance, a Collections as Data Case Study
Creators: name: Rodriguez, Rolando
name: Henley, Amanda
name: Wilson, Morgan
name: Jacobs, Hannah
name: Bruckner, Lorin
name: Nunez, Brianna
name: Jansen, Matthew
Publisher: name: Association for Computing Machinery (ACM)
Year: 2023

description:
On the Books: Jim Crow and Algorithms of Resistance is a collections as data and machine learning project from the University Libraries at the University of North Carolina at Chapel Hill. This project has created a plain text corpus of North Carolina legal volumes (1866–1967) and used machine learning to identify likely Jim Crow laws. The project has been well received and is now being expanded to two additional states, while assessing the use of On the Books products in research and instruction. State partners at the University of South Carolina and the University of Virginia are adapting the On the Books methodology to create corpora for their own states. Three teaching fellows created learning modules that use products from On the Books and taught the modules to college-level courses. Research fellows are making use of the products on research projects of their own design. This article will provide background for the On the Books project and will assess its use for multiple purposes: as a workflow to be reproduced by others, as content for use in teaching and learning, and as a resource for researchers. To demonstrate the utility of On the Books as a research tool, the article is co-authored by one of the research fellows. The project “Mental Health, Disability, and Jim Crow Laws in North Carolina, 1866–1967,” makes use of the legal corpus as a primary source for researching the intersections of information, mental health, nutrition, and shifts from agricultural to industrial economics in the history of North Carolina. By assessing the experiences of those making use of On the Books products, this article contributes to the understanding of best practices for those interested in creating and supporting collections as data so they may be used successfully for reproducibility, research, and teaching.
A qualitative quantum rate model for hydrogen transfer in soybean lipoxygenase
Creators: name: Jevtic, S.
name: Anders, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The hydrogen transfer reaction catalysed by soybean lipoxygenase (SLO) has been the focus of intense study following observations of a high kinetic isotope effect (KIE). Today high KIEs are generally thought to indicate departure from classical rate theory and are seen as a strong signature of tunnelling of the transferring particle, hydrogen or one of its isotopes, through the reaction energy barrier. In this paper we build a qualitative quantum rate model with few free parameters that describes the dynamics of the transferring particle when it is exposed to energetic potentials exerted by the donor and the acceptor. The enzyme's impact on the dynamics is modelled by an additional energetic term, an oscillatory contribution known as "gating". By varying two key parameters, the gating frequency and the mean donor-acceptor separation, the model is able to reproduce well the KIE data for SLO wild-type and a variety of SLO mutants over the experimentally accessible temperature range. While SLO-specific constants have been considered here, it is possible to adapt these for other enzymes.
description: 10 pages, 5 figures
CO2 condensation is a serious limit to the deglaciation of Earth-like planets
Creators: name: Turbet, Martin
name: Forget, Francois
name: Leconte, Jeremy
name: Charnay, Benjamin
name: Tobie, Gabriel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: It is widely believed that the carbonate-silicate cycle is the main agent to trigger deglaciations by CO$_2$ greenhouse warming on Earth and on Earth-like planets when they get in frozen state. Here we use a 3D Global Climate Model to simulate the ability of frozen planets to escape from glaciation by accumulating enough gaseous CO$_2$. We find that Earth-like planets orbiting a Sun-like star may never be able to escape from glaciation if their orbital distance is greater than $\sim$ 1.27 AU (Flux $
description: 45 pages, 7 figures, accepted for publication in EPSL
Fiandrino S., Devalle A., Cantino V. “Corporate governance and financial performance for engaging socially and environmentally responsible practices”, 2019
Creators: name: Fiandrino, Simona
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2023
Subjects: Accounting and Business Adm.

description: Simona Fiandrino presenta il percorso di ricerca del Prof. Valter Cantino nell’ambito di ricerca legato all’analisi della relazione impresa-ambiente e della responsabilità d’impresa in ottica di mitigazione del rischio. Dopo aver inquadrato il percorso di ricerca, con l’obiettivo di identificare la relazione impresa-ambiente e l’influenza della comunità sull’economicità dell’impresa e sugli assetti di gestione e di organizzazione, si illustra il paper “Corporate governance and financial performance for engaging socially and environmentally responsible practices”, pubblicato su Social Responsibility Journal, di cui il Prof. Cantino è coautore insieme al Prof. Devalle e alla Dott.ssa Fiandrino.
Supplementary document for Fibre-optic based Exploration of Lung Cancer Autofluorescence using Spectral Fluorescence Lifetime - 6819445.pdf
Creators: name: Adams, Alex
name: Kufcsak, Andras
name: Lochenie, Charles
name: Khadem, Mohsen
name: Akram, Ahsan
name: Dhaliwal, Kevin
name: Seth, Sohan
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Supplement material
Shared e-scooter rider safety behaviour and injury outcomes: a review of studies in the United States
Creators: name: Cherry, Christopher R.
name: Brown, Charles T.
name: Harmon, Katherine J.
name: Shah, Nitesh R.
name: Sanders, Rebecca L.
name: Bryson, Meg
name: Sexton, Emma G. P.
Publisher: name: Taylor & Francis
Year: 2023

description:
Electric scooters (e-scooters) have proliferated throughout North American cities in the past five years, with about 60 million shared e-scooter trips taken in 2021. That growth has resulted in safety and injury prevention challenges, and much of the regulatory approach has been to limit e-scooter use through technological or behavioural interventions. The past few years have yielded a patchwork of regulations based on a diversity of published safety and injury studies, including work on injury burden (e.g. hospitalisation studies), direct observation, rider surveys, or traffic crash (e.g. police-reported crash) analysis. This review draws from disparate studies to develop systematic policy conclusions related primarily to rider safety behaviour and associated injury outcomes, particularly severe injuries. This work focuses on perceived safety, demographics of scooter riders, injury trends of riders, temporal and spatial correlates of shared e-scooter rider injuries and contributing factors like roadway design, impairment, and helmets. While this review focuses on studies that occurred in the United States, some findings transfer elsewhere. The sum of the literature points to the importance of enhanced and maintained infrastructure to improve rider behaviour, predictability, and perceived safety, and increases in driver and e-scooter user education and enforcement to reduce violations and impairment.
Cantino V., Giacosa E., Cortese D. “A sustainable perspective in wine production for common-good management. The case of Fontanafredda biological ‘reserve’”, 2019
Creators: name: Cortese, Damiano
name: Giacosa, Elisa
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2023
Subjects: Accounting and Business Adm.

description: Damiano Cortese ed Elisa Giacosa presentano l’articolo “A sustainable perspective in wine production for common-good management The case of Fontanafredda biological ‘reserve’”, pubblicato dagli autori e da Valter Cantino nel 2019 sulla rivista British Food Journal.
Measuring cosmic shear and birefringence using resolved radio sources
Creators: name: Whittaker, Lee
name: Battye, Richard A.
name: Brown, Michael L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We develop a new method of extracting simultaneous measurements of weak lensing shear and a local rotation of the plane of polarization using observations of resolved radio sources. We show that the direction of polarization is statistically linked with that of the gradient of the total intensity field, and this provides the basis of our method. Using a number of sources spread over the sky, this method allows constraints to be placed on cosmic shear and birefringence, and it can be applied to any resolved radio sources for which such a correlation exists. Assuming that the rotation and shear are constant across the source, we use this relationship to construct a quadratic estimator and investigate its properties using simulated observations. We develop a calibration scheme using simulations based on the observed images to mitigate a bias which occurs in the presence of measurement errors and an astrophysical scatter on the polarization. The method is applied directly to archival data of radio galaxies where we measure a mean rotation signal of $\left=-2.03^{\circ}\pm0.75^{\circ}$ and an average shear compatible with zero using 30 reliable sources. This level of constraint on an overall rotation is comparable with current leading constraints from CMB experiments and is expected to increase by at least an order of magnitude with future high precision radio surveys, such as those performed by the SKA. We also measure the shear and rotation two-point correlation functions and estimate the number of sources required to detect shear and rotation correlations in future surveys.
description: 19 pages, 11 figures, 3 tables. Accepted by MNRAS
Why material slow light does not improve cavity-enhanced atom detection
Creators: name: Megyeri, B.
name: Lampis, A.
name: Harvie, G.
name: Culver, R.
name: Goldwin, J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the prospects for enhancing absorption and scattering of light from a weakly coupled atom in a high-finesse optical cavity by adding a medium with large, positive group index of refraction. The slow-light effect is known to narrow the cavity transmission spectrum and increase the photon lifetime, but the quality factor of the cavity may not be increased in a metrologically useful sense. Specifically, detection of the weakly coupled atom through either cavity ringdown measurements or the Purcell effect fails to improve with the addition of material slow light. A single-atom model of the dispersive medium helps elucidate why this is the case.
description: 11 pages, 4 figures; QuTiP python file included. This version: changed title and added several references; results are unchanged. Accepted for open access publication in a special issue of Journal of Modern Optics in memory of Prof Danny Segal. Publisher's version available at http://dx.doi.org/10.1080/09500340.2017.1384512
Evolution of reproductive isolation in a long-term evolution experiment with Drosophila melanogaster: 30 years of divergent life history selection
Creators: name: Robinson, Chloe E.
name: Thyagarajan, Harshavardhan
name: Chippindale, Adam K.
Publisher: name: Zenodo
Year: 2023
Subjects: reproductive isolation
Sexual conflict
Life History Evolution
Drosophila
premating isolation

description: We ask if three decades and over 1,500 generations of divergent life history selection on age at reproduction has resulted in the evolution of reproductive isolation (RI) between laboratory populations of Drosophila melanogaster. We tested for premating, postmating-prezygotic and postzygotic reproductive isolation between 3 replicate population pairs. Large evolved differences in body size between selection treatments suggested the potential for prezygotic barriers driven by sexual selection or physical incompatibilities between the sexes. Although a simple prediction would be preference for larger size, creating directional isolation, our results from individual mate choice trials indicate that populations from both selection treatments show a marked bias towards homotypic mate choice; indicative of prezygotic RI driven by sexual selection or sexual conflict. Hybridization between the focal populations resulted in the production of viable adult flies with intermediate size and developmental traits. We observed a suggestive but statistically non-significant trend of fitness decline in the F2 generation of hybrids, but no significant evidence suggesting the evolution of postmating-prezygotic or postzygotic RI. Our findings are in accord with extant literature that posits that premating RI evolves before postmating forms of RI.
description: All data files are CSVs.Funding provided by: Natural Sciences and Engineering Research Council of Canada
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000038
Award Number:
description: Data collection methods described in detail in MS. Briefly, observations of mating preferences of 3 population pairs; egg hatchability, larval to pupal and pupal to adult viabilities, body size, development time, and reproductive fitness of the parental lines, F1 crosses and F2 selfed flies were made.
title: Externe Konfliktberatung - Interview mit Lis De Pina, Leiterin des Service de la médiation scolaire in Luxemburg
Creators: name: Schilt, Michèle
Publisher: name: Universität Trier
Year: 2023
Subjects: subject: Luxemburg
valueUri: http://d-nb.info/gnd/4036728-9
subject: Schule
valueUri: http://d-nb.info/gnd/4053474-1
subject: Mediator
valueUri: http://d-nb.info/gnd/7637557-2

description: In Luxemburg helfen externe Schulmediator*innen bei schulischen Konflikten. Die Anlaufstelle unterstützt bei drohenden Schulabbrüchen und Konflikten, die bei der Inklusion und Integration von Schüler*innen mit besonderem Förderbedarf oder mit Migrationshintergrund entstehen. Michèle Schilt sprach mit der Leiterin der Servicestelle, Lis De Pina, über die Arbeit der Schulmediation.
Initial-boundary value problems associated with the Ablowitz-Ladik system
Creators: name: Xia, Baoqiang
name: Fokas, A. S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We employ the Ablowitz-Ladik system as an illustrative example in order to demonstrate how to analyze initial-boundary value problems for integrable nonlinear differential-difference equations via the unified transform (Fokas method). In particular, we express the solutions of the integrable discrete nonlinear Schrödinger and integrable discrete modified Korteweg-de Vries equations in terms of the solutions of appropriate matrix Riemann-Hilbert problems. We also discuss in detail, for both the above discrete integrable equations, the associated global relations and the process of eliminating of the unknown boundary values.
description: arXiv admin note: text overlap with arXiv:1703.01689
Joanna Wieczorek-Orlikowska (rec.): „Teoria Polityki” 2017, nr 1
Creators: name: Wieczorek-Orlikowska, Joanna
Publisher: name: Świat Idei i Polityki
Year: 2022

description: Świat Idei i Polityki, Tom 16 (2017): Świat Idei i Polityki
Uno Special Issue di Impresa Progetto in ricordo di Valter Cantino
Creators: name: Ferrando, Pier Maria
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2023

description: Questo Special Issue di Impresa Progetto - curato dal Direttore della Rivista Pier Maria Ferrando e da Alain Devalle in veste di guest editor - è stato realizzato in ricordo di Valter Cantino, ad un anno dalla sua prematura scomparsa, in collaborazione tra Impresa Progetto ed i suoi Colleghi dell’Università di Torino.

Lo Special si apre con due Editoriali: nel primo di Pier Maria Ferrando si spiegano i motivi dell’iniziativa e se ne illustrano i contenuti mentre nel secondo di Alain Devalle viene delineato il profilo umano e professionale di Valter. Seguono i ricordi di Stefano Marasca, Presidente della Società Italiana dei Docenti di Ragioneria ed Economia Aziendale - SIDREA, e di Luigi Puddu, Maura Campra e Fabrizio Bava, che ne hanno incrociato il percorso il primo come referente accademico, la seconda come “storica” compagna di viaggio ed il terzo come allievo. Vengono infine presentati sette contributi di Valter, scelti tra quelli più rappresentativi del senso del suo lavoro, illustrati e commentati da Paolo Biancone e Silvana Secinaro, Umberto Bocchino, Francesca Culasso e Donatella Busso, Fabrizio Bava, Massimo Pollifroni, Simona Fiandrino, Damiano Cortese e Elisa Giacosa. In calce al primo Editoriale è presentata una Bibliografia dei suoi scritti, curata da Silvia Barraco, Serena Divenuto, Fabrizio Guidicini e Sandra Migliore della Biblioteca di Economia e Management - Università di Torino.
Marcin Wałdoch (rec.): Marcin Grabowski, Rywalizacja czy integracja? Procesy i organizacje integracyjne w regionie Azji i Pacyfiku na przełomie XX i XXI wieku, Księgarnia Akademicka, Kraków 2015, ss. 321.
Creators: name: Wałdoch, Marcin
Publisher: name: Świat Idei i Polityki
Year: 2022

description: Świat Idei i Polityki, Tom 16 (2017): Świat Idei i Polityki
From minimal Lagrangian to J-minimal submanifolds: persistence and uniqueness
Creators: name: Lotay, Jason D.
name: Pacini, Tommaso
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Given a minimal Lagrangian submanifold L in a negative Kaehler--Einstein manifold M, we show that any small Kaehler--Einstein perturbation of M induces a deformation of L which is minimal Lagrangian with respect to the new structure. This provides a new source of examples of minimal Lagrangians. More generally, the same is true for the larger class of totally real J-minimal submanifolds in Kaehler manifolds with negative definite Ricci curvature.
description: Final version, 22 pages; to appear in a special volume in memory of Paolo de Bartolomeis, Boll. UMI
Bayesian modelling of lung function data from multiple-breath washout tests
Creators: name: Mahar, Robert K.
name: Carlin, John B.
name: Ranganathan, Sarath
name: Ponsonby, Anne-Louise
name: Vuillermin, Peter
name: Vukcevic, Damjan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Paediatric respiratory researchers have widely adopted the multiple-breath washout (MBW) test because it allows assessment of lung function in unsedated infants and is well suited to longitudinal studies of lung development and disease. However, a substantial proportion of MBW tests in infants fail current acceptability criteria. We hypothesised that a model-based approach to analysing the data, in place of traditional simple empirical summaries, would enable more efficient use of these tests. We therefore developed a novel statistical model for infant MBW data and applied it to 1,197 tests from 432 individuals from a large birth cohort study. We focus on Bayesian estimation of the lung clearance index (LCI), the most commonly used summary of lung function from MBW tests. Our results show that the model provides an excellent fit to the data and shed further light on statistical properties of the standard empirical approach. Furthermore, the modelling approach enables LCI to be estimated using tests with different degrees of completeness, something not possible with the standard approach. Our model therefore allows previously unused data to be used rather than discarded, as well as routine use of shorter tests without significant loss of precision. Beyond our specific application, our work illustrates a number of important aspects of Bayesian modelling in practice, such as the importance of hierarchical specifications to account for repeated measurements and the value of model checking via posterior predictive distributions.
First-principles molecular transport calculation for the benzenedithiolate molecule
Creators: name: Rumetshofer, M.
name: Dorn, G.
name: Boeri, L.
name: Arrigoni, E.
name: von der Linden, W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A first-principles approach based on Density Functional Theory and Non-Equilibrium Green's functions is used to study the molecular transport system consisting of benzenedithiolate connected with monoatomic gold and platinum electrodes. Using symmetry arguments we explain why the conductance mechanism is different for gold and platinum electrodes. We present the charge stability diagram for the benzenedithiolate connected with monoatomic platinum electrodes including many-body effects in terms of an extended Hubbard Hamiltonian and discuss how the electrodes and the many-body effects influence the transport properties of the system.
Stochastic electrodynamics simulations for collective atom response in optical cavities
Creators: name: Lee, Mark D.
name: Jenkins, Stewart D.
name: Bronstein, Yael
name: Ruostekoski, Janne
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the collective optical response of an atomic ensemble confined within a single-mode optical cavity by stochastic electrodynamics simulations that include the effects of atomic position correlations, internal level structure, and spatial variations in cavity coupling strength and atom density. In the limit of low light intensity the simulations exactly reproduce the full quantum field-theoretical description for cold stationary atoms and at higher light intensities we introduce semiclassical approximations to atomic saturation that we compare with the exact solution in the case of two atoms. We find that collective subradiant modes of the atoms, with very narrow linewidths, can be coupled to the cavity field by spatial variation of the atomic transition frequency and resolved at low intensities, and show that they can be specifically driven by tailored transverse pumping beams. We show that the cavity optical response, in particular both the subradiant mode profile and the resonance shift of the cavity mode, can be used as a diagnostic tool for the position correlations of the atoms and hence the atomic quantum many-body phase. The quantum effects are found to be most prominent close to the narrow subradiant mode resonances at high light intensities. Although an optical cavity can generally strongly enhance quantum fluctuations via light confinement, we show that the semiclassical approximation to the stochastic electrodynamics model provides at least a qualitative agreement with the exact optical response outside the subradiant mode resonances even in the presence of significant saturation of the atoms.
Holonomy representation of quasi-projective leaves of codimension one foliations
Creators: name: Claudon, Benoît
name: Loray, Frank
name: Pereira, Jorge
name: Touzet, Frédéric
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We prove that a representation of the fundamental group of a quasi-projective manifold into the group of formal diffeomorphisms of one variable either is virtually abelian or, after taking the quotient by its center, factors through an orbicurve.
description: 8 pages; comments are welcome. v2: precisions added
The adjoint group of a Coxeter quandle
Creators: name: Akita, Toshiyuki
Publisher: name: arXiv
Year: 2017
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We give explicit descriptions of the adjoint group of the Coxeter quandle $Q_W$ associated with an arbitrary Coxeter group $W$. The adjoint group of $Q_W$ turns out to be an intermediate group between $W$ and the corresponding Artin group $A_W$, and fits into a central extension of $W$ by a finitely generated free abelian group. We construct $2$-cocycles of $W$ corresponding to the central extension. In addition, we prove that the commutator subgroup of the adjoint group of $Q_W$ is isomorphic to the commutator subgroup of $W$. Finally, the root system $Φ_W$ associated with a Coxeter group $W$ turns out to be a rack. We prove that the adjoint group of $Φ_W$ is isomorphic to the adjoint group of $Q_W$.
description: [v2] minor changes [v3] Section 6 (Root Systems) added. To appear in Kyoto Journal of Mathematics
Absolutely separating quantum maps and channels
Creators: name: Filippov, Sergey N.
name: Magadov, Kamil Yu.
name: Jivulescu, Maria Anastasia
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Absolutely separable states $\varrho$ remain separable under arbitrary unitary transformations $U \varrho U^†$. By example of a three qubit system we show that in multipartite scenario neither full separability implies bipartite absolute separability nor the reverse statement holds. The main goal of the paper is to analyze quantum maps resulting in absolutely separable output states. Such absolutely separating maps affect the states in a way, when no Hamiltonian dynamics can make them entangled afterwards. We study general properties of absolutely separating maps and channels with respect to bipartitions and multipartitions and show that absolutely separating maps are not necessarily entanglement breaking. We examine stability of absolutely separating maps under tensor product and show that $Φ^{\otimes N}$ is absolutely separating for any $N$ if and only if $Φ$ is the tracing map. Particular results are obtained for families of local unital multiqubit channels, global generalized Pauli channels, and combination of identity, transposition, and tracing maps acting on states of arbitrary dimension. We also study the interplay between local and global noise components in absolutely separating bipartite depolarizing maps and discuss the input states with high resistance to absolute separability.
description: 28 pages, 7 figures
Hausdorff operators on holomorphic Hardy spaces and applications
Creators: name: Hung, Ha Duy
name: Ky, Luong Dang
name: Quang, Thai Thuan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 47B38, 42B30, 46E15

description: The aim of this paper is to characterize the nonnegative functions $φ$ defined on $(0,\infty)$ for which the Hausdorff operator $$\mathscr H_φf(z)= \int_0^\infty f\left(\frac{z}{t}\right)\frac{φ(t)}{t}dt$$ is bounded on the Hardy spaces of the upper half-plane $\mathcal H_a^p(\mathbb C_+)$, $p\in[1,\infty]$. The corresponding operator norms and their applications are also given.
description: Proc. Roy. Soc. Edinburgh Sect. A (to appear)
The Diffuse Radiation Field at High Galactic Latitudes
Creators: name: Akshaya, M. S.
name: Murthy, Jayant
name: Ravichandran, S.
name: Henry, R. C.
name: Overduin, James
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have used GALEX observations of the North and South Galactic poles to study the diffuse ultraviolet background at locations where the Galactic light is expected to be at a minimum. We find offsets of 230 -- 290 photon units in the FUV (1531 Å) and 480 -- 580 photon units in the NUV (2361 Å). Of this, approximately 120 photon units can be ascribed to dust scattered light and another 110 (190 in the NUV) photon units to extragalactic radiation. The remaining radiation is, as yet, unidentified and amounts to $120 -- 180$ photon units in the FUV and $300 -- 400$ photon units in the NUV. We find that molecular hydrogen fluorescence contributes to the FUV when the 100 $μ$m surface brightness is greater than 1.08 MJy sr$^{-1}$.
description: 11 pages and 13 figures
Anarchy with Hierarchy: A Probabilistic Appraisal
Creators: name: Babu, K. S.
name: Khanov, Alexander
name: Saad, Shaikh
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The masses of the charged fermion and the mixing angles among quarks are observed to be strongly hierarchical, while analogous parameters in the neutrino sector appear to be structure-less or anarchical. We develop a class of unified models based on SU(5) symmetry that explains these differing features probabilistically. With the aid of three input parameters that are hierarchical, and with the assumption that all the Yukawa couplings are uncorrelated random variables described by Gaussian distributions, we show by Monte Carlo simulations that the observed features of the entire fermion spectrum can be nicely reproduced. We extend our analysis to an SU(5)-based flavor U(1) model making use of the Froggatt-Nielsen mechanism where the order one Yukawa couplings are modeled as random variables, which also shows good agreement with observations.
description: 46 pages, 16 figures; Reference list has been updated
Community targets for JWST's early release science program: evaluation of WASP-63b
Creators: name: Kilpatrick, Brian M.
name: Cubillos, Patricio E.
name: Stevenson, Kevin B.
name: Lewis, Nikole K.
name: Wakeford, Hannah
name: Macdonald, Ryan J.
name: Madhusudhan, Nikku
name: Blecic, Jasmina
name: Bruno, Giovanni
name: Burrows, Adam
name: Deming, Drake
name: Heng, Kevin
name: Line, Michael R.
name: Morley, Caroline V.
name: Parmentier, Vivien
name: Tucker, Gregory S.
name: Valenti, Jeff A.
name: Waldmann, Ingo P.
name: Bean, Jacob L.
name: Beichman, Charles
name: Fraine, Jonathan
name: Krick, J. E.
name: Lothringer, Joshua D.
name: Mandell, Avi M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present observations of WASP-63b by the Hubble Space Telescope (HST) as part of "A Preparatory Program to Identify the Single Best Transiting Exoplanet for JWST Early Release Science". WASP-63b is one of the community targets under consideration for the James Webb Space Telescope (JWST) Early Release Science (ERS) program. We present a spectrum derived from a single observation by HST Wide Field Camera 3 in the near infrared. We engaged groups across the transiting exoplanet community to participate in the analysis of the data and present results from each. There is general agreement amongst all results that we find an H2O absorption feature with 3.5-4.0 sigma significance. However, the feature is muted in comparison to a clear atmosphere at solar composition. Although the detection of the water feature is robust, the reasons for the muting of this feature are ambiguous due to a degeneracy between clouds and composition. The data does not yield robust detections of any molecular species other than H2O. The group was motivated to perform an additional set of retrieval exercises to investigate an apparent bump in the spectrum at ~ 1.55 um. We explore possible disequilibrium chemistry and find this feature is consistent with super-solar HCN abundance but it is questionable if the required mixing ratio of HCN is chemically and physically plausible. The ultimate goal of this study is to vet WASP-63b as a potential community target to best demonstrate the capabilities and systematics of JWST instruments for transiting exoplanet science. In the case of WASP-63b, the presence of a detectable water feature indicates that WASP-63b remains a plausible target for ERS observations.
description: repaired broken citations
Black holes as bubbles of AdS
Creators: name: Danielsson, U. H.
name: Dibitetto, G.
name: Giri, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we propose that bubbles of AdS within Minkowski spacetime, stabilized at a finite radius by stiff matter and an electromagnetic gas, can be an alternative endpoint of gravitational collapse. The bubbles are horizonless with a size up to 12.5% larger than their Schwarzschild radius depending on their charge. We argue that they are stable against small perturbations, and have thermodynamical properties similar to those of real black holes. We provide a realization of the bubbles within string theory that relies on a specific brane intersection giving rise to a shell carrying dissolved charges from lower dimensional D-branes as well as a gas of open strings. We also note that our construction provides a new way of understanding the entropy of Reissner-Nordström black holes in the extremal limit.
description: References and a few comments added. Published version
Spin-polarized current in non-collinear antiferromagnets
Creators: name: Zelezny, Jakub
name: Zhang, Yang
name: Felser, Claudia
name: Yan, Binghai
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Noncollinear antiferromagnets, such as Mn$_3$Sn and Mn$_3$Ir, were recently shown to be analogous to ferromagnets in that they have a large anomalous Hall effect. Here we show that these materials are similar to ferromagnets in another aspect: the charge current in these materials is spin-polarized. In addition, we show that the same mechanism that leads to the spin-polarized current also leads to a transverse spin current, which has a distinct symmetry and origin from the conventional spin Hall effect. We illustrate the existence of the spin-polarized current and the transverse spin current by performing \emph{ab initio} microscopic calculations and by analyzing the symmetry. We discuss possible applications of these novel spin currents, such as an antiferromagnetic metallic or tunneling junction.
description: 6 pages, 3 figures