cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measurements of the production cross section of a $Z$ boson in association with jets in pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the production cross section of a $Z$ boson in association with jets in proton-proton collisions at $\sqrt{s} = 13$ TeV are presented, using data corresponding to an integrated luminosity of 3.16 fb$^{-1}$ collected by the ATLAS experiment at the CERN Large Hadron Collider in 2015. Inclusive and differential cross sections are measured for events containing a $Z$ boson decaying to electrons or muons and produced in association with up to seven jets with $p_T > 30$ GeV and $|y| <2.5$. Predictions from different Monte Carlo generators based on leading-order and next-to-leading-order matrix elements for up to two additional partons interfaced with parton shower and fixed-order predictions at next-to-leading order and next-to-next-to-leading order are compared with the measured cross sections. Good agreement within the uncertainties is observed for most of the modelled quantities, in particular with the generators which use next-to-leading-order matrix elements and the more recent next-to-next-to-leading-order fixed-order predictions.
description: 47 pages in total, author list starting page 31, 8 figures, 6 tables, published in Eur. Phys. J. C77 (2017) 361. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2016-01/
Gauge-invariant implications of the LHCb measurements on Lepton-Flavour Non-Universality
Creators: name: Celis, Alejandro
name: Fuentes-Martin, Javier
name: Vicente, Avelino
name: Virto, Javier
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the implications of the recent measurements of $R_K$ and $R_{K^*}$ by the LHCb collaboration. We do that by adopting a model-independent approach based on the Standard Model Effective Field Theory (SMEFT), in which the dominant new physics effects are encoded in the coefficients of dimension-six operators respecting the full Standard Model (SM) gauge symmetry. After providing simplified expressions for $R_K$ and $R_{K^\ast}$, we determine the implications of the recent LHCb results for these observables on the coefficients of the SMEFT operators at low and high energies. We also take into account all $b\to s \ell\ell$ data, which combined lead to effective New Physics (NP) scenarios with SM pulls in excess of 5~$σ$. Thus the operators discussed in this paper would be the first dimension-six terms in the SM Lagrangian to be detected experimentally. Indirect constraints on these operators are also discussed. The results of this paper transcend the singularity of the present situation, and set a standard for future analyses in $b\to s$ transitions when the NP is assumed to lie above the electroweak scale.
description: 10 pages, 2 figures, 3 tables. v2: references added, typos corrected, improved discussion in Sec. V, corrected coefficient of C7 in formula for RKstar in the low-bin, new figure with global fit in terms of SMEFT coefficients. Conclusions unchanged. v3: minor addition, shorter version to be published in PRD
Measurements of top-quark pair to $Z$-boson cross-section ratios at $\sqrt s = 13, 8, 7$TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Ratios of top-quark pair to $Z$-boson cross sections measured from proton--proton collisions at the LHC centre-of-mass energies of $\sqrt s=13$TeV, 8TeV, and 7TeV are presented by the ATLAS Collaboration. Single ratios, at a given $\sqrt s$ for the two processes and at different $\sqrt s$ for each process, as well as double ratios of the two processes at different $\sqrt s$, are evaluated. The ratios are constructed using previously published ATLAS measurements of the $t\overline{t}$ and $Z$-boson production cross sections, corrected to a common phase space where required, and a new analysis of $Z \rightarrow \ell^+ \ell^-$ where $\ell=e,μ$ at $\sqrt s=13$TeV performed with data collected in 2015 with an integrated luminosity of $3.2$fb$^{-1}$. Correlations of systematic uncertainties are taken into account when evaluating the uncertainties in the ratios. The correlation model is also used to evaluate the combined cross section of the $Z\rightarrow e^+e^-$ and the $Z\rightarrow μ^+ μ^-$ channels for each $\sqrt s$ value. The results are compared to calculations performed at next-to-next-to-leading-order accuracy using recent sets of parton distribution functions. The data demonstrate significant power to constrain the gluon distribution function for the Bjorken-$x$ values near 0.1 and the light-quark sea for $x<0.02$.
description: 55 pages in total, author list starting page 34, 9 figures, 18 tables, submitted to J. High Energy Phys. All figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2016-02/
title: The Impact of Lean Manufacturing on Sustainability
Creators: name: Schneider, Lukas
Publisher: name: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Year: 2024
Subjects: subject: Sustainability,Lean Manufacturing, Lean Management, Efficiency,Poka-yoka, Lean pyramid of waste

description: This paper discusses how current lean manufacturing techniques relate to reducing the massive carbon footprint of manufacturing companies. It also discusses how lean principles contribute to sustainability in the business world by reducing various types of waste. This study will also look at the challenges that companies face when trying to implement a waste minimising approach.
Screw and Lie Group Theory in Multibody Kinematics -- Motion Representation and Recursive Kinematics of Tree-Topology Systems
Creators: name: Mueller, Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: After three decades of computational multibody system (MBS) dynamics, current research is centered at the development of compact and user friendly yet computationally efficient formulations for the analysis of complex MBS. The key to this is a holistic geometric approach to the kinematics modeling observing that the general motion of rigid bodies as well as the relative motion due to technical joints are screw motions. Moreover, screw theory provides the geometric setting and Lie group theory the analytic foundation for an intuitive and compact MBS modeling. The inherent frame invariance of this modeling approach gives rise to very efficient recursive $O\left( n\right) $ algorithms, for which the so-called 'spatial operator algebra' is one example, and allows for use of readily available geometric data. In this paper three variants for describing the configuration of tree-topology MBS in terms of relative coordinates, i.e. joint variables, are presented: the standard formulation using body-fixed joint frames, a formulation without joint frames, and a formulation without either joint or body-fixed reference frames. This allows for describing the MBS kinematics without introducing joint reference frames and therewith rendering the use of restrictive modeling convention, such as Denavit-Hartenberg parameters, redundant. Four different definitions of twists are recalled and the corresponding recursive expressions are derived. The corresponding Jacobians and their factorization are derived. The aim of this paper is to motivate the use of Lie group modeling and to provide a review of the different formulations for the kinematics of tree-topology MBS in terms of relative (joint) coordinates from the unifying perspective of screw and Lie group theory.
Obliquity evolution of the minor satellites of Pluto and Charon
Creators: name: Quillen, Alice C.
name: Nichols-Fleming, Fiona
name: Chen, Yuan-Yuan
name: Noyelles, Benoit
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: New Horizons mission observations show that the small satellites Styx, Nix, Kerberos and Hydra, of the Pluto-Charon system, have not tidally spun-down to near synchronous spin states and have high obliquities with respect to their orbit about the Pluto-Charon binary (Weaver et al. 2016). We use a damped mass-spring model within an N-body simulation to study spin and obliquity evolution for single spinning non-round bodies in circumbinary orbit. Simulations with tidal dissipation alone do not show strong obliquity variations from tidally induced spin-orbit resonance crossing and this we attribute to the high satellite spin rates and low orbital eccentricities. However, a tidally evolving Styx exhibits intermittent obliquity variations and episodes of tumbling. During a previous epoch where Charon migrated away from Pluto, the minor satellites could have been trapped in orbital mean motion inclination resonances. An outward migrating Charon induces large variations in Nix and Styx's obliquities. The cause is a commensurability between the mean motion resonance frequency and the spin precession rate of the spinning body. As the minor satellites are near mean motion resonances, this mechanism could have lifted the obliquities of all four minor satellites. The high obliquities need not be primordial if the minor satellites were at one time captured into mean motion resonances.
description: Icarus, in press
One Edition – Multiple Interfaces. Dissemination and Preservation of Sustainable Digital Scholarly Editions
Creators: name: Rasmussen, Krista Stinne Greve
name: Baunvig, Katrine Frøkjær
name: Tafdrup, Jon
name: Vad, Kirsten
name: Ravn, Kim Steen
Publisher: name: Zenodo
Year: 2024

description: The paper presents the strategies and ideas we are currently working to implement at Center for Grundtvig Studies, Aarhus University. The center hosts the meso-scaled project Grundtvig’s Works (2009-2029) (www.grundtvigsvaerker.dk), which is the largest humanist project in terms of timeframe and funding on Danish ground so far. It is a critical edition of all works published by the Danish poet, pastor, politician, and romanticist N.F.S. Grundtvig (1783–1872), who is regarded as one of the most (if not the) central figure in the nineteenth-century Danish nation building process, as well as in the construction of a modern Danish Christianity. The project was envisioned by dedicated scholars and initiated by a consortium including members of the Danish parliament around 2008. The vision was a scholarly edited, digital version of Grundtvig’s published writings, that should be available to Danish citizens free of charge. The writings, published within a period of 68 years (1804–1872), amount to 4M word tokens distributed over approximately 37K standard pages.

Managing a project like this impels the scholars to make their research results as widely available as possible. Our idea of a sustainable infrastructure is built around great openness of our data, and a tripartion of labour involved in making, rendering, and storing digital scholarly editions.
Biomarker S100B in plasma a screening tool for mild traumatic brain injury in an emergency department
Creators: name: Hopman, Joëlla H.
name: Santing, Juliette A. L.
name: Foks, Kelly A.
name: Verheul, Rolf J.
name: van der Linden, Christien M.
name: van den Brand, Crispijn L.
name: Jellema, Korné
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: A computerized tomography (CT) scan is an effective test for detecting traumatic intracranial findings after mild traumatic brain injury (mTBI). However, a head CT is costly, and can only be performed in a hospital. To determine if the addition of plasma S100B to clinical guidelines could lead to a more selective scanning strategy without compromising safety. We conducted a single center prospective cohort study at the emergency department. Patients (≥16 years) who received head CT and had a blood draw were included. The primary outcome was the accuracy of plasma S100B to predict the presence of any traumatic intracranial lesion on head CT. We included 495 patients, out of the 74 patients who had traumatic intracranial lesions, 5 patients had a plasma S100B level below the cutoff value of 0.105 ug/L. For the detection of traumatic intracranial injury, S100B had a sensitivity of 0.932 , a specificity of 0.157, a negative predictive value of 0.930, and a positive predictive value of 0.163. Among patients undergoing guideline-based CT scan for mTBI, the use of S100B, would results in a further decrease (14.8%) of CT scans but at a cost of missed injury, without clinical consequence, on CT.
Relaxation dynamics of modulated magnetic phases in skyrmion host GaV4S8: an ac magnetic susceptibility study
Creators: name: Butykai, Ádám
name: Bordács, Sándor
name: Kiss, Lászlo F.
name: Szigeti, Bertalan György
name: Tsurkan, Vladimir
name: Loidl, Alois
name: Kézsmárki, István
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on the slow magnetization dynamics observed upon the magnetic phase transitions of GaV4S8, a multiferroic compound featuring a long-ranged cycloidal magnetic order and a Néel-type skyrmion lattice in a relatively broad temperature range below its Curie temperature. The fundamental difference between GaV4S8 and the chiral helimagnets, wherein the skyrmion phase was first discovered, lies within the polar symmetry of GaV4S8, promoting a cycloidal instead of a helical magnetic order and rendering the magnetic phase diagram essentially different from that in the cubic helimagnets. Our ac magnetic susceptibility study reveals slow relaxation dynamics at the field-driven phase transitions between the cycloidal, skyrmion lattice and field-polarized states. At each phase boundary, the characteristic relaxation times were found to exhibit a strong temperature dependence, starting from the minute range at low temperatures, decreasing to the micro- to millisecond range at higher temperatures.
General Feature Extraction In SAR Target Classification: A Contrastive Learning Approach Across Sensor Types
Creators: name: Muzeau, M.
name: Frontera-Pons, J.
name: Ren, Chengfang
name: Ovarlez, J. -P.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The increased availability of SAR data has raised a growing interest in applying deep learning algorithms. However, the limited availability of labeled data poses a significant challenge for supervised training. This article introduces a new method for classifying SAR data with minimal labeled images. The method is based on a feature extractor Vit trained with contrastive learning. It is trained on a dataset completely different from the one on which classification is made. The effectiveness of the method is assessed through 2D visualization using t-SNE for qualitative evaluation and k-NN classification with a small number of labeled data for quantitative evaluation. Notably, our results outperform a k-NN on data processed with PCA and a ResNet-34 specifically trained for the task, achieving a 95.9% accuracy on the MSTAR dataset with just ten labeled images per class.
title: How Young People Dealt With Online Risks During Covid-19 Lockdown in Austria (Spring 2020)
title: KiDiCoTi National Report
titleType: Subtitle
Creators: name: Trueltzsch-Wijnen, Christine
name: Trültzsch-Wijnen, Sascha
Publisher: name: University of Salzburg
Year: 2022
Subjects: subject: FOS: Media and communications
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: This thematic report is the result of a study carried out in Austria as part of the research pro-ject “Kids’ Digital Lives in COVID-19 Times” (KiDiCoTi) coordinated by the European Commis-sion’s Joint Research Centre (JRC). The focus is on how young people dealt with online risks but also with opportunities during Covid-19 lockdown. The report is based on a quantitative survey of 510 families with children between 10 and 18 years old.
title: Poetik der Politik und Politik der Poetik: Bykow versus Putin
Creators: name: Ganschow, Inna
Publisher: name: Fachinformationsdienst Slavistik
Year: 2016
Subjects: subject: Bykow, Dmitri
subject: Putin, Vladimir Vladimirovič
subject: Lyrik
subject: Satire
subject: Politik
subject: Opposition
subject: Massenmedien
subject: 491.8

description: 2011 sorgte die russische Gegenwartsdichtung unerwartet für Aufsehen. Ein Projekt von Andrei Wassiljew, gestartet beim Sender Doschd, benannt nach Nekrassows „Der Dichter und der Bürger“, wurde schnell populär. Dmitri Bykows satirische Gedichte, vorgetragen von Michail Jefremow, erlangten Erfolg, stießen aber auch auf Probleme wegen kritischer Inhalte gegenüber Staatsführern. Nach Zensur durch TV Rain-Doschd wechselte das Projekt zum Internet-Portal F5 und lief bis März 2012 unter „Graschdanin-Poet“. Bykows Werke, auch in der Zeitschrift Kommersant-Wlast veröffentlicht, sind von literarischem und medienwissenschaftlichem Interesse. Sie reflektieren den Dialog zwischen Opposition und Regime, analysiert durch verbale und non-verbale Kommunikation, und hinterfragen die gegenseitige Wahrnehmung und Beeinflussung.
description: Gedichte schreiben in Zeiten der Umbrüche: Tendenzen der Lyrik seit 1989 in Russland und Deutschland, p. 415
Pure-state photon-pair source with a long coherence time for large-scale quantum information processing
Creators: name: Li, Bo
name: Li, Yu-Huai
name: Cao, Yuan
name: Yin, Juan
name: Peng, Cheng-Zhi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Hong-Ou-Mandel interference between independent photons plays a pivotal role in the large-scale quantum networks involving distant nodes. Photons need to work in a pure state for indistinguishability to reach high-quality interference. Also, they need to have a sufficiently long coherence time to reduce the time synchronization requirements in practical application. In this paper, we discuss a scheme for generating a pure-state photon-pair source with a long coherence time in periodically poled potassium titanyl phosphate (PPKTP) crystals. By selecting the appropriate pump laser and filter, we could simultaneously eliminate the frequency correlation of the parametric photons while achieving a long coherence time. We experimentally developed this pure-state photon-pair source of 780 nm on PPKTP crystals pumped by a 390 nm pulsed laser. The source provided a coherence time of tens of picoseconds, and it showed to have the potential to be applied in long-distance quantum interference. Furthermore, we experimentally demonstrated the Hong-Ou-Mandel (HOM) interference between two photon sources with visibility exceeding the classical limit.
title: Der Umgang von Kindern und Jugendlichen mit Herausforderungen des Internets während des Covid-19 Lockdowns in Österreich (Frühling 2020)
title: KiDiCoTi Nationaler Bericht
titleType: Subtitle
Creators: name: Trueltzsch-Wijnen, Christine
name: Trültzsch-Wijnen, Sascha
Publisher: name: University of Salzburg
Year: 2022
Subjects: subject: FOS: Media and communications
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Dieser themenspezifische Bericht ist das Ergebnis einer Studie, die im Rahmen des For-schungsprojekts „Kids’ Digital Lives in COVID-19 Times“ (KiDiCoTi) durchgeführt und von der Gemeinsamen Forschungsstelle (JRC) der Europäischen Kommission koordiniert wurde. Der Fokus liegt auf dem Umgang mit Chancen und Risiken im Umgang mit digitalen Technologien während des Covid-19 Lockdowns in Österreich. Der Bericht stützt sich auf eine quantitative Befragung von 510 Familien mit Kindern zwischen zehn und 18 Jahren.
title: Das metasprachliche Element im zeitgenössischen poetischen Text
Creators: name: Fatejewa, Natalja
Publisher: name: Fachinformationsdienst Slavistik
Year: 2016
Subjects: subject: Lyrik
subject: Metasprache
subject: 491.8

description: Dieser Beitrag untersucht, wie Dichter ihre Beziehung zu sprachlichen Zeichen definieren, indem sie sowohl als Autoren als auch als Sprachforscher agieren, die mit Sprache experimentieren. Besonders in der Poesie ist die Wechselwirkung zwischen der poetischen und der metasprachlichen Funktion der Sprache zentral. Nach Roman Jakobson konzentriert sich Dichtung auf die Botschaft selbst und auf den sprachlichen Code, wodurch der Text eine selbstreferenzielle Qualität erhält. Diese Analyse beleuchtet die Verschmelzung von poetischer Form und sprachlicher Reflexion im literarischen Schaffen.
description: Gedichte schreiben in Zeiten der Umbrüche: Tendenzen der Lyrik seit 1989 in Russland und Deutschland, p. 207
Non-relativistic geometry of holographic screens
Creators: name: Moosa, Mudassir
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose that the intrinsic geometry of holographic screens should be described by the Newton-Cartan geometry. As a test of this proposal, we show that the evolution equations of the screen can be written in a covariant form in terms of a stress tensor, an energy current, and a momentum one-form. We derive the expressions for the stress tensor, energy density, and momentum one-form using Brown-York action formalism.
description: v2: published version
German soccer stars and the politics of media representation : a case study in ethnicity and celebrity culture
Creators: name: Waas, Sabine
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Soccer
Celebrity culture
Migration
Germany
Media representation

description: This dissertation examines the (self)representation of German soccer players in social media, sports media, popular literature, and fan discourses. It emphasizes the role of ethnicity in the creation of celebrity sports branding and fan–athlete relationship. Ever since West Germany won its first FIFA World Cup in 1954, soccer has allowed for the construction of an “imagined community” in West Germany and then unified Germany. Since the 1960s, soccer culture has been increasingly intertwined with the entertainment sector, resulting in more money through advertising, merchandising and television coverage. The soccer player Franz Beckenbauer capitalized on that, becoming the first German sports celebrity, scoring endorsement deals, attending social events, and writing his autobiography. Other soccer celebrities followed, including German players mit Migrationshintergrund (a term literally meaning “migration background;” it refers to people who did not acquire German citizenship at birth or whose parents did not acquire German citizenship at birth). While there is scholarship on people mit Migrationshintergrund and sports celebrities separately, there are not many studies about soccer celebrities mit Migrationshintergrund. My dissertation analyzes how soccer players like Lukas Podolski, Jérôme Boateng, and Mesut Özil use their Migrationshintergrund to further their celebrity status and thereby their brand(s). I argue that their branding is governed by fan expectations, masculinity norms, entrepreneurialism, and specific models of migration discourses.
Designing strong baselines for ternary neural network quantization through support and mass equalization
Creators: name: Yvinec, Edouard
name: Dapogny, Arnaud
name: Bailly, Kevin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep neural networks (DNNs) offer the highest performance in a wide range of applications in computer vision. These results rely on over-parameterized backbones, which are expensive to run. This computational burden can be dramatically reduced by quantizing (in either data-free (DFQ), post-training (PTQ) or quantization-aware training (QAT) scenarios) floating point values to ternary values (2 bits, with each weight taking value in {-1,0,1}). In this context, we observe that rounding to nearest minimizes the expected error given a uniform distribution and thus does not account for the skewness and kurtosis of the weight distribution, which strongly affects ternary quantization performance. This raises the following question: shall one minimize the highest or average quantization error? To answer this, we design two operators: TQuant and MQuant that correspond to these respective minimization tasks. We show experimentally that our approach allows to significantly improve the performance of ternary quantization through a variety of scenarios in DFQ, PTQ and QAT and give strong insights to pave the way for future research in deep neural network quantization.
Recursive regularization step for high-order lattice Boltzmann methods
Creators: name: Coreixas, Christophe
name: Wissocq, Gauthier
name: Puigt, Guillaume
name: Boussuge, Jean-François
name: Sagaut, Pierre
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A lattice Boltzmann method (LBM) with enhanced stability and accuracy is presented for various Hermite tensor-based lattice structures. The collision operator relies on a regularization step, which is here improved through a recursive computation of non-equilibrium Hermite polynomial coefficients. In addition to the reduced computational cost of this procedure with respect to the standard one, the recursive step allows to considerably enhance the stability and accuracy of the numerical scheme by properly filtering out second (and higher) order non-hydrodynamic contributions in under-resolved conditions. This is first shown in the isothermal case where the simulation of the doubly periodic shear layer is performed with a Reynolds number ranging from $10^4$ to $10^6$, and where a thorough analysis of the case at $Re=3\times 10^4$ is conducted. In the latter, results obtained using both regularization steps are compared against the BGK-LBM for standard (D2Q9) and high-order (D2V17 and D2V37) lattice structures, confirming the tremendous increase of stability range of the proposed approach. Further comparisons on thermal and fully compressible flows, using the general extension of this procedure, are then conducted through the numerical simulation of Sod shock tubes with the D2V37 lattice. They confirm the stability increase induced by the recursive approach as compared with the standard one.
description: Accepted for publication as a Regular Article in Physical Review E
An fully implicit scheme for numerical integration of the relativistic particle equation of motion
Creators: name: Pétri, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Relativistic strongly magnetized plasmas are produced in laboratories thanks to state-of-the-art laser technology but can naturally be found around compact objects such as neutron stars and black holes. Detailed studies of the behaviour of relativistic plasmas require accurate computations able to catch the full spatial and temporal dynamics of the system. Numerical simulations of ultra-relativistic plasmas face severe restrictions due to limitations in the maximum possible Lorentz factors that current algorithm can reproduce to good accuracy. In order to circumvent this flaw and repel the limit to $γ\approx10^9$, we design a new fully implicit scheme to solve the relativistic particle equation of motion in an external electromagnetic field using a three dimensional Cartesian geometry. We show some examples of numerical integrations in constant electromagnetic fields to prove the efficiency of our algorithm. The code is also able to follow the electric drift motion for high Lorentz factors. In the most general case of spatially and temporally varying electromagnetic fields, the code performs extremely well as shown by comparison with exact analytical solutions for the relativistic electrostatic Kepler problem as well as for linearly and circularly polarized plane waves.
description: Submitted to Journal of Plasma Physics Special Issue "The Vlasov equation: from space to laboratory plasmas"
Human Airway Epithelium Controls Pseudomonas aeruginosa Infection via inducible Nitric Oxide Synthase
Creators: name: Grubwieser, Philipp
name: Böck, Nina
name: Erika, Kvalem Soto
name: Hilbe, Richard
name: Moser, Patrizia
name: Seifert, Markus
name: Govrins, Miriam Alisa
name: Posch, Wilfried
name: Sonnweber, Thomas
name: Nairz, Manfred
name: Theurl, Igor
name: Trajanoski, Zlatko
name: Weiss, Günter
Publisher: name: Zenodo
Year: 2024
Subjects: Pseudomonas aeruginosa
nitric oxide synthase (iNOS).
airway epithelial cells

description: This archive contains the data produced after the bioinformatic analysis for the study "Human Airway Epithelium Controls Pseudomonas aeruginosa Infection via inducible Nitric Oxide Synthase". 

In particular, it contains the following files:

salmon.merged.gene_counts.tsv  Raw counts from Salmon v1.10.0  produced as output after running  the nf-core RNA-seq pipeline version 3.10.1.     

hAO_inf_hAO_ctrl_IHWsigFCgenes.xlsx Differentially expressed genes produced using Bioconductor package DESeq2 v1.38.3.
A Computational Study of Yttria-Stabilized Zirconia: II. Cation Diffusion
Creators: name: Dong, Yanhao
name: Qi, Liang
name: Li, Ju
name: Chen, I-Wei
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Cubic yttria-stabilized zirconia is widely used in industrial electrochemical devices. While its fast oxygen ion diffusion is well understood, why cation diffusion is much slower-its activation energy (~5 eV) is 10 times that of anion diffusion-remains a mystery. Indeed, all previous computational studies predicted more than 5 eV is needed for forming a cation defect, and another 5 eV for moving one. In contrast, our ab initio calculations have correctly predicted the experimentally observed cation diffusivity. We found Schottky pairs are the dominant defects that provide cation vacancies, and their local environments and migrating path are dictated by packing preferences. As a cation exchanges position with a neighboring vacancy, it passes by an empty interstitial site and severely displaces two oxygen neighbors with shortened Zr-O distances. This causes a short-range repulsion against the migrating cation and a long-range disturbance of the surrounding, which explains why cation diffusion is relatively difficult. In comparison, cubic zirconia's migrating oxygen only minimally disturbs neighboring Zr, which explains why it is a fast oxygen conductor.
New approach to initializing hydrodynamic fields and mini-jet propagation in quark-gluon fluids
Creators: name: Okai, Michito
name: Kawaguchi, Koji
name: Tachibana, Yasuki
name: Hirano, Tetsufumi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We propose a new approach to initialize the hydrodynamic fields such as energy density distributions and four flow velocity fields in hydrodynamic modeling of high-energy nuclear collisions at the collider energies. Instead of matching the energy-momentum tensor or putting the initial conditions of quark-gluon fluids at a fixed initial time, we utilize a framework of relativistic hydrodynamic equations with source terms to describe the initial stage. Putting the energy and momentum loss rate of the initial partons into the source terms, we obtain hydrodynamic initial conditions dynamically. The resultant initial profile of the quark-gluon fluid looks highly bumpy as seen in the conventional event-by-event initial conditions. In addition, initial random flow velocity fields also are generated as a consequence of momentum deposition from the initial partons. We regard the partons that survive after the dynamical initialization process as the mini-jets and find sizable effects of both mini-jet propagation in the quark-gluon fluids and initial random transverse flow on the final momentum spectra and anisotropic flow observables. We perform event-by-event $(3+1)$-dimensional ideal hydrodynamic simulations with this new framework that enables us to describe the hydrodynamic bulk collectivity, parton energy loss, and interplay among them in a unified manner.
description: 9 pages, 8 figures; v2: published version, title changed
Neutron-transfer induced breakup of the Borromean nucleus $^9$Be
Creators: name: Villanueva, G.
name: Moro, A. M.
name: Casal, J.
name: Lei, Jin
Publisher: name: arXiv
Year: 2025
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We address the problem of evaluating neutron-transfer induced breakup cross sections caused by the Borromean nucleus $^{9}$Be, using the reaction $^{197}$Au($^{9}$Be,$^{8}$Be)$^{198}$Au as a test case. This reaction was recently measured over a wide range of incident energies around the Coulomb barrier. To deal with the high density of $^{198}$Au states that can be potentially populated in this reaction, we employ the Ichimura, Austern, Vicent model, in which the spectrum of physical states for this system is replaced by the solutions of a complex n+$^{197}$Au potential, accounting effectively for the fragmentation of single-particle states into physical states. Furthermore, to account for the unbound nature of the emitted $^{8}$Be system, we employ a three-body model of $^{9}$Be. The calculated stripping cross sections are found to be in good agreement with existing data over a wide range of incident energies. The importance of taking into account the energy spread of the single-particle strength of the outgoing $^{8}$Be and the target-like residual nucleus is discussed.
description: 7 pages, 7 figures
title: MEDIA EDUCATION IN AUSTRIAN FAMILIES DURING THE COVID-19 PANDEMIC
title: KiDiCoTi National Report: Austria
titleType: Subtitle
Creators: name: Trültzsch-Wijnen, Christine
name: Trültzsch-Wijnen, Sascha
Publisher: name: University of Salzburg
Year: 2022
Subjects: subject: FOS: Media and communications
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: This thematic report is the result of a study carried out in Austria as part of the research project “Kids’ Digital Lives in COVID-19 Times” (KiDiCoTi) coordinated by the European Commission’s Joint Research Centre (JRC). The focus is on media education in Austrian families during the first Covid-19 lockdown in spring and early summer 2020. The report is mainly based on a quantitative survey of 510 families with children between 10 and 18 years old. Additional information on younger children come from a qualitative survey of 10 families with children between the ages of 6 and 10.
Iterative Methods for Photoacoustic Tomography in Attenuating Acoustic Media
Creators: name: Haltmeier, Markus
name: Kowar, Richard
name: Nguyen, Linh V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The development of efficient and accurate reconstruction methods is an important aspect of tomographic imaging. In this article, we address this issue for photoacoustic tomography. To this aim, we use models for acoustic wave propagation accounting for frequency dependent attenuation according to a wide class of attenuation laws that may include memory. We formulate the inverse problem of photoacoustic tomography in attenuating medium as an ill-posed operator equation in a Hilbert space framework that is tackled by iterative regularization methods. Our approach comes with a clear convergence analysis. For that purpose we derive explicit expressions for the adjoint problem that can efficiently be implemented. In contrast to time reversal, the employed adjoint wave equation is again damping and, thus has a stable solution. This stability property can be clearly seen in our numerical results. Moreover, the presented numerical results clearly demonstrate the Efficiency and accuracy of the derived iterative reconstruction algorithms in various situations including the limited view case.
description: 24 pages, 7 figures
Quasi-two-body decays $B_{(s)}\to Pρ\to Pππ$ in perturbative QCD approach
Creators: name: Li, Ya
name: Ma, Ai-Jun
name: Xiao, Zhen-Jun
name: Wang, Wen-Fei
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we calculate the $CP$-averaged branching ratios and the direct $CP$-violating asymmetries of the quasi-two-body decays $B_{(s)} \to P (ρ\to) ππ$ by employing the perturbative QCD (PQCD) approach (here $P$ stands for a light pseudoscalar meson $π, K, η$ or $η^{\prime}$). The vector current time-like form factor $F_π$, which contains the final state interactions between the pion pair in the resonant region associated with the $P$-wave states $ρ(770)$ along with the two-pion distribution amplitudes, are employed to describe the interactions between the $ρ$ and the pion pair under the hypothesis of the conserved vector current. We found that (a) the PQCD predictions for the branching ratios and the direct $CP$-violating asymmetries for most considered $B_{(s)} \to P (ρ\to) ππ$ decays agree with currently available data within errors; (b) for ${\cal B}(B \to π^0 ρ^0 \to π^0(π^+ π^-)$, the PQCD prediction is much smaller than the measured one; and (c) for $B^+ \to π^+(ρ^0\to)π^+ π^-$ decay mode, we found a negative $CP$ asymmetry $(-27.5^{+3.0}_{-3.7})\%$, which agrees with other theoretical predictions but different in sign from those as reported by BaBar and LHCb Collaboration.
description: 13 pages, 1 figure
Design, production, burn-in and tests of the hybrid circuits of the Upstream Tracker at the LHCb detector
Creators: name: Citterio, M.
name: Conti, N.
name: De Benedetti, F.
name: Gandini, P.
name: Merli, A.
name: Neri, N.
name: Petruzzo, M.
name: Norella, E. Spadaro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a description of the design process, prototyping and production of the hybrid circuits for the front-end electronics of the Upstream Tracker at LHCb. The multilayer polyamide-based printed circuit boards, or hybrids, are designed to host the front-end ASICs. The ASICs require an optimized power delivery network from 0 to 120MHz, with a maximum of 10^-2 Ohms round-trip resistance, and 100 Ohms differential traces. Hybrids are required to have minimal radiation length, and to withstand the harsh environmental conditions of the data taking through intrinsic radiation hardness characteristics.
A Computational Study of Yttria-Stabilized Zirconia: I. Using Crystal Chemistry to Search for the Ground State on a Glassy Energy Landscape
Creators: name: Dong, Yanhao
name: Qi, Liang
name: Li, Ju
name: Chen, I-Wei
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Yttria-stabilized zirconia (YSZ), a ZrO2-Y2O3 solid solution that contains a large population of oxygen vacancies, is widely used in energy and industrial applications. Past computational studies correctly predicted the anion diffusivity but not the cation diffusivity, which is important for material processing and stability. One of the challenges lies in identifying a plausible configuration akin to the ground state in a glassy landscape. This is unlikely to come from random sampling of even a very large sample space, but the odds are much improved by incorporating packing preferences revealed by a modest sized configurational library established from empirical potential calculations. Ab initio calculations corroborated these preferences, which prove remarkably robust extending to the fifth cation-oxygen shell about 8 Å away. Yet because of frustration there are still rampant violations of packing preferences and charge neutrality in the ground state, and the approach toward it bears a close analogy to glass relaxations. Fast relaxations proceed by fast oxygen movement around cations, while slow relaxations require slow cation diffusion. The latter is necessarily cooperative because of strong coupling imposed by the long-range packing preferences.
title: Enhancing Player Experience in Asymmetric VR Games
Creators: name: McCready, Michael
Publisher: name: University of Kent
Year: 2023

description: Interest in multiplayer games that allow players to connect and play together using different technologies, such as virtual or augmented reality (VR/AR) has increased. Research has shown that in cross-reality gaming experiences (eg. where there are differences in players' abilities, user interface (UI), and methods of interaction) it is possible to achieve an enhanced player experience (PX) through various interdependencies. However, most of the previous work focuses on co-located scenarios, where the space and proximity of the players are local and utilised. In this study, I present an asymmetric VR game prototype called LabXscape. Through the prototype, I researched how asymmetries of interface, methods of interaction, information access, and narrative impact the PX for players using different technologies (eg. VR, mobile, PC). In this asymmetric VR game prototype, players can use different devices. Their interactions, movements, and information infuence and are shared with each other, creating a cross-reality experience. My observations reveal that there are factors that allow non-VR players to have as engaging an experience as VR players, despite using a less immersive device.
The Rytov Approximation in Electron Scattering
Creators: name: Krehl, Jonas
name: Lubk, Axel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this work we introduce the Rytov approximation in the scope of high-energy electron scattering with the motivation of developing better linear models for electron scattering. Such linear models play an important role in tomography and similar reconstruction techniques. Conventional linear models, such as the Phase Grating Approximation, have reached their limits in current and forsee- able applications, most importantly in achieving three-dimensional atomic resolution using electron holographic tomography. The Rytov approximation incorporates propagation effects which are the most pressing limitation of conventional models. While predominately used in the weak-scattering regime of light microscopy we show that the Rytov approximation can give reasonable results in the inherently strong-scattering regime of transmission electron microscopy.
A possible connection between the spin temperature of damped Lyman-alpha absorption systems and star formation history
Creators: name: Curran, S. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a comprehensive analysis of the spin temperature/covering factor degeneracy, T/f, in damped Lyman-alpha absorption systems. By normalising the upper limits and including these via a survival analysis, there is, as previously claimed, an apparent increase in T/f with redshift at z > 1. However, when we account for the geometry effects of an expanding Universe, neglected by the previous studies, this increase in T/f at z > 1 is preceded by a decrease at z < 1. Using high resolution radio images of the background continuum sources, we can transform the T/f degeneracy to T/d^2, where d is the projected linear size of the absorber. Again, there is no overall increase with redshift, although a dip at z ~ 2 persists. Furthermore, we find d^2/T to follow a similar variation with redshift as the star formation rate. This suggests that, although the total hydrogen column density shows little relation to the SFR, the fraction of the cold neutral medium may. Therefore, further efforts to link the neutral gas with the star formation history should also consider the cool component of the gas.
description: Accepted by MNRAS
An empirical and theoretical critique of the Euclidean index
Creators: name: Andersen, Jens Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: The recently proposed Euclidean index offers a novel approach to measure the citation impact of academic authors, in particular as an alternative to the h-index. We test if the index provides new, robust information, not covered by existing bibliometric indicators, discuss the measurement scale and the degree of distinction between analytical units the index offers. We find that the Euclidean index does not outperform existing indicators on these topics and that the main application of the index would be solely for ranking, which is not seen as a recommended practice.
description: Accepted for publication in Journal of Informetrics
Designing Bimetallic Nanoparticle Catalysts via Tailored Surface Segregation
Creators: name: Tang, Yaxin
name: Hou, Mingao
name: He, Qian
name: Luo, Guangfu
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Bimetallic nanoparticles serve as a vital class of catalysts with tunable properties suitable for diverse catalytic reactions, yet a comprehensive understanding of their structural evolution under operational conditions as well as their optimal design principles remains elusive. In this study, we unveil a prevalent surface segregation phenomenon in approximately 100 platinum-group-element-based bimetallic nanoparticles through molecular dynamics simulations and derive a thermodynamic descriptor to predict this behavior. Building on the generality and predictability of surface segregation, we propose leveraging this phenomenon to intentionally enrich the nanoparticle surface with noble-metal atoms, thereby significantly reducing their usage while maintaining high catalytic activity and stability. To validate this strategy, we investigate dozens of platinum-based bimetallic nanoparticles for propane dehydrogenation catalysis using first-principles calculations. Through a systematic examination of the catalytic sites on nanoparticle surfaces, we eventually identify several candidates featuring with stable Pt-enriched surface and superior catalytic activity, confirming the feasibility of this approach.