cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chemical evolution history of MaNGA galaxies
Creators: name: Camps-Fariña, Artemi
name: Sánchez, Sebastián F.
name: Mejía-Narváez, Alfredo
name: Lacerda, Eduardo A. D.
name: Carigi, Leticia
name: Bruzual, Gustavo
name: Alvarez-Hurtado, Paola
name: Drory, Niv
name: Lane, Richard R.
name: Boardman, Nicholas Fraser
name: Blanc, Guillermo A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We show the results of a study using the spectral synthesis technique study for the full MaNGA sample showing their Chemical Enrichment History (ChEH) as well as the evolution of the stellar mass-metallicity relation (MZR) over cosmic time. We find that the more massive galaxies became enriched first and the lower mass galaxies did so later, producing a change in the MZR which becomes shallower in time. Separating the sample into morphology and star-forming status bins some particularly interesting results appear: The mass dependency of the MZR becomes less relevant for later morphological types, to the extent that it inverts for Sd/Irr galaxies, suggesting that morphology is at least as important a factor as mass in chemical evolution. The MZR for the full sample shows a flattening at the high-mass end and another at the low-mass range, but the former only appears for retired galaxies while the latter only appears for star-forming galaxies. We also find that the average metallicity gradient is currently negative for all mass bins but for low mass galaxies it was inverted at some point in the past, before which all galaxies had a positive gradient. We also compare how diverse the ChEHs are in the different bins considered as well as what primarily drives the diversity: How much galaxies become enriched or how quickly they do so.
description: Currently in review at ApJ
Protection of quantum evolutions under parity-time symmetric non-Hermitian Hamiltonians by dynamical decoupling
Creators: name: Bian, Ji
name: Wang, Kunxu
name: Lu, Pengfei
name: Rao, Xinxin
name: Wu, Hao
name: Lao, Qifeng
name: Liu, Teng
name: Liu, Yang
name: Zhu, Feng
name: Luo, Le
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Parity-time (PT) symmetric non-Hermitian Hamiltonians bring about many novel features and interesting applications such as quantum gates faster than those in Hermitian systems, and topological state transfer. The performance of evolutions under $\mathcal{PT}$-symmetric Hamiltonians is degraded by the inevitable noise and errors due to system-environment interaction and experimental imperfections. In contrast to Hermitian Hamiltonians, the fluctuations in dissipative beams that are utilized to generate non-Hermitian contributions in the PT-symmetric Hamiltonians cause additional errors. Here we achieve the protection of PT-symmetric Hamiltonians against noise acting along the qubit's quantization axis by combining quantum evolutions with dynamical decoupling sequences. We demonstrate the performance of our method by numerical simulations. Realistic noise sources and parameters are chosen including: constant detuning error, time-varying detuning noise and dissipative-beam noise. The fidelities of the protected evolutions are well above the unprotected ones under all the above situations. Our work paves the way for further studies and applications of non-Hermitian $\mathcal{PT}$-symmetric physics in noisy quantum systems.
Entanglement quantification from collective measurements processed by machine learning
Creators: name: Roik, Jan
name: Bartkiewicz, Karol
name: Černoch, Antonín
name: Lemr, Karel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate how to reduce the number of measurement configurations needed for sufficiently precise entanglement quantification. Instead of analytical formulae, we employ artificial neural networks to predict the amount of entanglement in a quantum state based on results of collective measurements (simultaneous measurements on multiple instances of the investigated state). This approach allows us to explore the precision of entanglement quantification as a function of measurement configurations. For the purpose of our research, we consider general two-qubit states and their negativity as entanglement quantifier. We outline the benefits of this approach in future quantum communication networks.
description: 8 pages, 6 figures
Additional file 8 of Early migration of stemless and stemmed humeral components after total shoulder arthroplasty for osteoarthritis—study protocol for a randomized controlled trial
Creators: name: Nyring, Marc Randall Kristensen
name: Olsen, Bo S.
name: Yilmaz, Müjgan
name: Petersen, Michael M.
name: Flivik, Gunnar
name: Rasmussen, Jeppe V.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 8. Justification for criteria left as N/A.
Topological data analysis of truncated contagion maps
Creators: name: Klimm, Florian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Topology (math.AT)
subject: Machine Learning (cs.LG)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Genomics (q-bio.GN)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The investigation of dynamical processes on networks has been one focus for the study of contagion processes. It has been demonstrated that contagions can be used to obtain information about the embedding of nodes in a Euclidean space. Specifically, one can use the activation times of threshold contagions to construct contagion maps as a manifold-learning approach. One drawback of contagion maps is their high computational cost. Here, we demonstrate that a truncation of the threshold contagions may considerably speed up the construction of contagion maps. Finally, we show that contagion maps may be used to find an insightful low-dimensional embedding for single-cell RNA-sequencing data in the form of cell-similarity networks and so reveal biological manifolds. Overall, our work makes the use of contagion maps as manifold-learning approaches on empirical network data more viable.
description: The following article has been accepted by Chaos: An Interdisciplinary Journal of Nonlinear Science
A second order upper bound on the ground state energy of a Bose gas beyond the Gross-Pitaevskii regime
Creators: name: Basti, Giulia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider a system of $N$ bosons in a unitary box in the grand-canonical setting interacting through a potential with scattering length scaling as $N^{-1+κ},$ $κ\in (0,2/3).$ This regimes interpolate between the Gross-Pitaevskii regime ($κ=0$) and the thermodynamic limit ($κ=2/3$). In Forum Math. Sigma 9 (2021), e74, as an intermediate step to prove an upper bound in agreement with the Lee-Huang-Yang formula in the thermodynamic limit, it is obtained a second order upper bound on the ground state energy for $κ<5/9.$ In this paper, thanks to a more careful analysis of the error terms, we extend the above mentioned result to $κ<7/12$.
description: Contribution to the Proceedings of ICMP 2021
Interplay of magnetism and superconductivity in 2D extended Hubbard model
Creators: name: Gilmutdinov, V. F.
name: Timirgazin, M. A.
name: Arzhnikov, A. K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The interplay between magnetic and superconducting states on a square lattice is studied using the extended Hubbard model, which takes into account the attraction of electrons located at nearest neighbor sites. Ferro-, antiferro-, and spiral magnetic states with all possible sets of spiral wave vectors, as well as singlet superconducting states with s-wave and d-wave pairing order parameters, are considered. Formation of a state with the intermediate s+id-symmetry and phase separation between different phases are allowed. The results of the Hartree-Fock and slave boson approximations are compared in order to study the role of correlation effects. Both macroscopic phase separation and microscopic coexistence of the superconducting and magnetic phases are found under certain model parameters.
description: 11 pages, 6 figures
Axion electrodynamics and magnetohydrodynamics
Creators: name: Hwang, Jai-chan
name: Noh, Hyerim
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We formulate axion-electrodynamics and magnetohydrodynamics (MHD) in the cosmological context assuming weak gravity. The two formulations are made for a general scalar field with general $f(ϕ)$-coupling, and an axion as a massive scalar field with $ϕ^2$-coupling, with the helical electromagnetic field. The $α$-dynamo term appears naturally from the helical coupling in the MHD formulation. In the presence of the electromagnetic coupling, however, the Schrödinger and hydrodynamic formulations of the coherently oscillating axion are {\it not} available for the conventional $ϕ$ coupling; instead, $ϕ^2$ coupling allows successful formulations preserving the dark matter nature of the axion to nonlinear order. In the MHD formulation, direct couplings between the scalar and electromagnetic fields appear only for non-ideal MHD. We study gravitational and magnetic instabilities of the scalar field and axion MHDs.
description: 7 pages, no figure
Interaktives E-Book «Flitzi flitzt und Hila hoppelt». Entwicklung eines interaktiven E-Books zur Sensibilisierung und Aufklärung der Redeflussstörung Poltern bei Kindern im Alter von vier bis sechs Jahren
Creators: name: Baer, Judith
name: Landert, Céline
Publisher: name: Interkantonale Hochschule für Heilpädagogik
Year: 2024
Subjects: Logopädie
Bachelorarbeit
Poltern
interaktives E-Book
Kindergarten

description: Zurzeit existiert kein Bilderbuch zum Thema Poltern, jedoch zahlreiche Geschichten zur Stotterthematik. Dies hat eine Sichtung bestehender Bilderbücher ergeben. Diese Bachelorarbeit soll diese fachliche Lücke schliessen. Das Ziel der vorliegenden Bachelorarbeit ist die Entwicklung und Evaluation des theoriegeleiteten interaktiven E-Books «Flitzi flitzt und Hila hoppelt» für vier- bis sechsjährige Kinder zur Sensibilisierung und Aufklärung des Störungsbildes Poltern. Das interaktive E-Book richtet sich an Kinder und deren Bezugspersonen. Es kann den logopädischen Fachpersonen als Therapieeinstieg dienen, soll aber hauptsächlich den Bezugspersonen zur fachlichen Information und als Ratgeber dienen.Die Autor*innen untersuchten kategoriengeleitet vergleichbare Bücher, um die Frage zu klären, wie ein didaktisch sinnvolles, störungsspezifisches, sensibilisierendes und aufklärendes Bilderbuch aufgebaut ist. Diese Resultate dienten als Basis für die Produktentwicklung des interaktiven E-Books. Durch eine Literaturrecherche und eine Nutzwertanalyse entstand ein theoriegeleitetes, fachlich repräsentatives interaktives Produkt. Das E-Book ist mit vielen farbigen Bildern illustriert und enthält einige interaktive spielerische Aktivitäten. Diese sollen die Motivation unterstützen und die Wahrnehmung sowie die Konzentration der Kindergartenkinder anregen.Die interaktiven Anteile sowie das E-Book wurden durch eine Mixed-Methods-Befragung in Form eines Onlinefragebogens evaluiert. Fünf Spezialist*innen im Bereich Redeflussstörung prüften das Produkt auf die fachliche Repräsentation, den Sensibilisierungs- und Aufklärungsauftrag, die altersspezifische Verständlichkeit sowie die Benutzerfreundlichkeit. Die Umfrageresultate wurden in einem Massnahmenplan festgehalten und priorisiert.Die Autor*innen kamen zum Ergebnis, dass ein Interesse an dem störungsspezifischen interaktiven E-Book «Flitzi flitzt und Hila hoppelt» besteht. Vier von fünf der befragten spezialisierten Fachpersonen im Redeflussbereich würden das Produkt unter anderem wegen der Geschichte, den liebevollen Illustrationen und dem Sensibilisierungs- und Aufklärungscharakter im Rahmen einer Poltertherapie mit Kindern im Alter von vier bis sechs Jahren verwenden.
Separating the output ports of a Bragg interferometer via velocity selective transport
Creators: name: Piccon, Raphaël
name: Sarkar, Sumit
name: Merlet, Sébastien
name: Santos, Franck Pereira dos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on the study of a detection scheme based on a Bloch separator in two-photon Bragg interferometers. We increase the spatial separation between the two output ports of the interferometer by selectively imparting 30 Bloch oscillations to one of them before their detection via time of flight. This method allows increasing the duration of the interferometer by reducing the time for discriminating the ports of the interferometer at detection. We study in detail the impact of this separator on the performance of a dual gravity sensor, and in particular on its measurement sensitivities to gravity acceleration and gravity gradients.
Secure and Authorized Client-to-Client Communication for LwM2M
Creators: name: Lanzieri, Leandro
name: Kietzmann, Peter
name: Schmidt, Thomas C.
name: Wählisch, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Constrained devices on the Internet of Things (IoT) continuously produce and consume data. LwM2M manages millions of these devices in a server-centric architecture, which challenges edge networks with expensive uplinks and time-sensitive use cases. In this paper, we contribute two LwM2M extensions to enable client-to-client (C2C) communication: (i) an authorization mechanism for clients, and (ii) an extended management interface to allow secure C2C access to resources. We analyse the security properties of the proposed extensions and show that they are compliant with LwM2M security requirements. Our performance evaluation on off-the-shelf IoT hardware shows that C2C communication outperforms server-centric deployments. First, LwM2M deployments with edge C2C communication yield a ~90% faster notification delivery and ~8x greater throughput compared to common server-centric scenarios, while keeping a small memory overhead of ~8%. Second, in server-centric communication, the delivery rate degrades when resource update intervals drop below 100 ms.
Self-consistent equation for torsion arising as a consequence of the Dirac sea quantum fluctuations in external classical electromagnetic and gravitational fields
Creators: name: Vergeles, S. N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The quantum fluctuations of the Dirac field in external classical gravitational and electromagnetic fields are studied. A self-consistent equation for torsion is calculated, which is obtained using one-loop fermion diagrams.
description: 7 pages
Optimal multilevel adaptive FEM for the Argyris element
Creators: name: Gräßle, Benedikt
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N12, 65N30, 65Y20

description: The main drawback for the application of the conforming Argyris FEM is the labourious implementation on the one hand and the low convergence rates on the other. If no appropriate adaptive meshes are utilised, only the convergence rate caused by corner singularities [Blum and Rannacher, 1980], far below the approximation order for smooth functions, can be achieved. The fine approximation with the Argyris FEM produces high-dimensional linear systems and for a long time an optimal preconditioned scheme was not available for unstructured grids. This paper presents numerical benchmarks to confirm that the adaptive multilevel solver for the hierarchical Argyris FEM from [Carstensen and Hu, 2021] is in fact highly efficient and of linear time complexity. Moreover, the very first display of optimal convergence rates in practically relevant benchmarks with corner singularities and general boundary conditions leads to the rehabilitation of the Argyris finite element from the computational perspective.
Gemeinsamkeiten und Unterschiede zwischen sprachspezifischen Förderansätzen für Kinder im Autismusspektrum und Therapieansätzen für Kinder mit Sprachentwicklungsstörungen
Creators: name: Pfistner, Uta
Publisher: name: Interkantonale Hochschule für Heilpädagogik
Year: 2024
Subjects: Logopädie
Bachelorarbeit
Autismusspektrum
Sprachentwicklungsstörung
Therapie

description: Seit Jahren steigt die Zahl der Autismusdiagnosen, das bemerken auch Logopäd:innen an der integrativen Volksschule. Ihre Möglichkeiten, sich breites und tiefes Wissen über die autistische Kommunikation und Sprachentwicklung anzueignen, sind jedoch begrenzt. Zwar können sie bei der Arbeit mit einem autistischen Kind auf ihr Wissen über die Therapie von Sprachentwicklungsstörungen zurückgreifen, mehr Sicherheit im Handeln gewinnen sie aber, wenn sie bewährte Praktiken der sprachspezifischen Förderung bei Autismus kennen und auf Besonderheiten vorbereitet sind.In dieser Arbeit werden einige Gemeinsamkeiten und Unterschiede zwischen ausgewählten Ansätzen zur sprachspezifischen Förderung von Kindern im Autismusspektrum und zur Therapie von Kindern mit Sprachentwicklungsstörungen vorgestellt und daraus Gelingensfaktoren für Interventionen mit vier- bis achtjährigen Kindern im Autismusspektrum abgeleitet. Grundlage ist ein Vergleich von Original- und Sekundärliteratur zu insgesamt acht Ansätzen, die nach selbst definierten Kriterien analysiert wurde. Die Analyse zeigt, dass Gemeinsamkeiten und Unterschiede auf ähnliche beziehungsweise unterschiedliche theoretische Grundlagen zurückgeführt werden können. Unter den Gemeinsamkeiten sind mehrere über alle Ansätze hinweg erkennbar. Sie gründen auf einem Konsens über professionelles sprachtherapeutisches Handeln und bilden damit die Basis für die Gelingensfaktoren. Unterschiede zwischen den beiden Gruppen von Ansätzen ergeben sich aus der Rücksicht auf autistische Besonderheiten bei den Ansätzen zur sprachspezifischen Förderung von Kindern im Autismusspektrum. Allerdings teilen nicht alle Autor:innen innerhalb einer Ansatzgruppe immer die gleichen Ansichten. Unterschiede bestehen auch nicht zwingend zwischen den Ansatzgruppen, sondern können auf bestimmte Positionen von Autor:innen zurückzuführen sein, wobei sich in manchen Fällen ähnliche Positionen in beiden Ansatzgruppen finden lassen. Solche Unterschiede fordern von Logopäd:innen im Alltag Entscheidungen. Dass es für Interventionen mit autistischen Kindern unterschiedliche, jeweils gut begründbare Herangehensweisen gibt, zeigt sich auch in den Kommentaren von vier erfahrenen Fachpersonen, denen Zwischenergebnisse dieser Arbeit vorgestellt wurden. Einige ihrer Aussagen runden die abschliessend formulierten Gelingensfaktoren ab. Aus dem kritischen Blick auf die Methodik ergeben sich mehrere Gedanken für weiterführende Untersuchungen.
Annex C Information Sheet 1.01 Growing Plants In Isolation Or Under Exclusion Conditions
Creators: name: European Food Safety Authority Panel On Plant Health
Publisher: name: Zenodo
Year: 2018
Subjects: subject: Pest control
subject: Pest management
subject: Quarantine
subject: Effectiveness
subject: http://id.agrisemantics.org/gacs/C587

description: Annex C Information sheet 1.01

Growing plants in isolation or under exclusion conditions

This information sheet is part of Annex C (Standardised checklist of risk reduction options) supporting document to the draft Guidance of the EFSA Plant Health Panel on quantitative pest risk assessment under public consultation (http://www.efsa.europa.eu/en/consultations/call/180212-0)

Description of possible exclusion conditions that could be implemented to isolate the crop from pests and if applicable relevant vectors. E.g. a dedicated structure such as glass or plastic greenhouses.
description: contact email: ALPHA@efsa.europa.eu
Unterwegs mit Parkinson – eine bewegungsorientierte Übungsbox für die Logopädie – Inwiefern bewährt sich diese in der therapeutischen Praxis?
Creators: name: Gallati, Afra
name: Graffmann, Payapa
name: Todesco, Yvonne
Publisher: name: Interkantonale Hochschule für Heilpädagogik
Year: 2024
Subjects: Logopädie
Bachelorarbeit
Parkinson
Therapie
bewegungsorientierte Übungen

description: Morbus Parkinson wird in unserer Gesellschaft je länger, je relevanter, da immer mehr Menschen davon betroffen sind und sich die Krankheit in mindestens 75 Prozent der Fälle auch auf das Sprechen auswirkt. Mit der vorliegenden Bachelorarbeit wurde eine Übungsbox für die Praxis entworfen mit dem Ziel, die Betroffenen beim Erhalt oder bei der Verbesserung der Körperfunktionen und -strukturen auf Ebene der Sprech- und Stimmfunktion gemäss ICF zu unterstützen. Mit für die Patient*innen alltagsrelevanten und motivierenden Übungen für die Therapie und Eigentherapie wurden bei der Entwicklung zudem die Aktivität und die Teilhabe berücksichtigt. Die Fragestellung der Arbeit war: «Unterwegs mit Parkinson – eine bewegungsorientierte Übungsbox für die Logopädie – Inwiefern bewährt sich diese in der therapeutischen Praxis?». Um diese Frage zu beantworten, wurde zuerst eine Übungssammlung für Betroffene entworfen und auf Basis eines Leitfadeninterviews qualitativ ausgewertet. Mit den daraus gewonnenen Erkenntnissen wurde der Prototyp der Übungsbox entwickelt. Diese wurden von sieben Logopäd*innen im klinischen Bereich mit je einer Patientin/einem Patienten in der Praxis getestet und evaluiert. Die qualitative und quantitative Evaluation der schriftlichen Befragung hat gezeigt, dass sich insbesondere die beübten Funktionskreise Artikulation und Phonation sowie die Mimik nach dreiwöchiger Übungsphase verbessert haben. So ergab sich nach Einschätzung der Patient*innen durch die Testpersonen in diesen Bereichen eine Verbesserung von 67 Prozent nach Einsatz der Übungsbox. Auch in Bereichen, die nicht gezielt beübt wurden, z. B. Tonusregulation und Haltung, konnten gemäss den Logopäd*innen Verbesserungen festgestellt werden. Mehr als die Hälfte der Proband*innen beurteilte den Einsatz von Hilfsmitteln in die Übungen als hilfreich. Zudem bewerteten zwei von sieben Logopäd*innen den Einbezug von Bewegung als sehr positiv. Allerdings erwies sich bei Patient*innen mit ausgeprägter Symptomatik, wie starken motorischen Beeinträchtigungen, eine bewegungsgestützte Umsetzung der Übungen als schwierig. Zusammenfassend hat sich die Übungsbox in der Praxis bewährt und kann als kompaktes und wirksames Übungsmaterial für Parkinson-Patient*innen in der Therapie und im Alltag eingesetzt werden.
A universal feature of charged entanglement entropy
Creators: name: Bueno, Pablo
name: Cano, Pablo A.
name: Murcia, Ángel
name: Sánchez, Alberto Rivadulla
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Rényi entropies, $S_n$, admit a natural generalization in the presence of global symmetries. These "charged Rényi entropies" are functions of the chemical potential $μ$ conjugate to the charge contained in the entangling region and reduce to the usual notions as $μ\rightarrow 0$. For $n=1$, this provides a notion of charged entanglement entropy. In this letter we prove that for a general $d (\geq 3)$-dimensional CFT, the leading correction to the uncharged entanglement entropy across a spherical entangling surface is quadratic in the chemical potential, positive definite, and universally controlled (up to fixed $d$-dependent constants) by the coefficients $C_J$ and $a_2$. These fully characterize, for a given theory, the current correlators $\langle JJ\rangle $ and $\langle TJJ \rangle$, as well as the energy flux measured at infinity produced by the insertion of the current operator. Our result is motivated by analytic holographic calculations for a special class of higher-curvature gravities coupled to a $(d-2)$-form in general dimensions as well as for free-fields in $d=4$. A proof for general theories and dimensions follows from previously known universal identities involving the magnetic response of twist operators introduced in arXiv:1310.4180 and basic thermodynamic relations.
description: 5+8 pages
Geometric Assumptions in Hydrodynamic Modeling of Coronal and Flaring Loops
Creators: name: Reep, Jeffrey W.
name: Ugarte-Urra, Ignacio
name: Warren, Harry P.
name: Barnes, Will T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In coronal loop modeling, it is commonly assumed that the loops are semi-circular with a uniform cross-sectional area. However, observed loops are rarely semi-circular, and extrapolations of the magnetic field show that the field strength decreases with height, implying that the cross-sectional area expands with height. We examine these two assumptions directly to understand how they affect the hydrodynamic and radiative response of short, hot loops to strong, impulsive electron beam heating events. Both the magnitude and rate of area expansion impact the dynamics directly, and an expanding cross-section significantly lengthens the time for a loop to cool and drain, increases upflow durations, and suppresses sound waves. The standard $T \sim n^{2}$ relation for radiative cooling does not hold with expanding loops, which cool with relatively little draining. An increase in the eccentricity of loops, on the other hand, only increases the draining timescale, and is a minor effect in general. Spectral line intensities are also strongly impacted by the variation in the cross-sectional area since they depend on both the volume of the emitting region as well as the density and ionization state. With a larger expansion, the density is reduced, so the lines at all heights are relatively reduced in intensity and, because of the increase of cooling times, the hottest lines remain bright for significantly longer. Area expansion is critical to accurate modeling of the hydrodynamics and radiation, and observations are needed to constrain the magnitude, rate, and location of the expansion or lack thereof.
description: Accepted to ApJ
Remarks about weighted energy integrals over Minkowski spectral functions from Euclidean lattice data
Creators: name: DeGrand, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I make some simple observations about the calculation of weighted averages over energy of Minkowski space spectral densities from weighted averages over time of Euclidean space correlation functions, measured in latice simulations. The correlator of two vector currents is used as an example, where it appears that a determination of a weighted average of the spectral function near the rho pole at the five per cent level is possible from lattice simulations.
description: 10 pages, 6 figures
Dynamical phase transitions in the photodriven charge-ordered Dirac-electron system
Creators: name: Tanaka, Yasuhiro
name: Mochizuki, Masahito
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Photoinduced phase transitions and charge dynamics in the interacting Dirac-electron system with a charge-ordered ground state are theoretically studied by taking an organic salt $α$-(BEDT-TTF)$_2$I$_3$. By analysing the extended Hubbard model for this compound using a combined method of numerical simulations based on the time-dependent Schrödinger equation and the Floquet theory, we observe successive dynamical phase transitions from the charge-ordered insulator to a gapless Dirac semimetal and, eventually, to a Chern insulator phase under irradiation with circularly polarized light. These phase transitions occur as a consequence of two major effects of circularly polarized light, i.e., closing of the charge gap through melting the charge order and opening of the topological gap by breaking the time reversal symmetry at the Dirac points. We demonstrate that these photoinduced phenomena are governed by charge dynamics of driven correlated Dirac electrons.
description: 6 pages, 4 figures
Modelling of saturated external MHD instabilities in tokamaks: a comparison of 3D free boundary equilibria and nonlinear stability calculations
Creators: name: Ramasamy, Rohan
name: Ramirez, Guillermo Bustos
name: Hoelzl, Matthias
name: Graves, Jonathan
name: López, Guillermo Suárez
name: Lackner, Karl
name: Günter, Sibylle
name: team, the JOREK
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: 3D free boundary equilibrium computations have recently been used to model external kinks and edge harmonic oscillations (EHOs), comparing with linear MHD stability codes, and nonlinear analytic theory [Kleiner et al, PPCF 61 084005 (2019)]. In this study, results of the VMEC equilibrium code are compared further with nonlinear reduced MHD simulations, using the JOREK code. The purpose of this investigation is to understand the extent to which the modelling approaches agree, and identify the important physical effects which can modify the dynamics. For the simulated external kink, which is dominated by a single toroidal harmonic, good agreement is found when a large Lundquist number is used in the JOREK simulation, such that resistive effects are sub-dominant. Modelling EHOs where multiple toroidal harmonics are linearly unstable, the saturated perturbation observed can differ in the dominant toroidal harmonic. On the ideal timescale, a n=2 EHO is observed in JOREK, while the saturated perturbation predicted by VMEC is a n=1 mode. Extending simulations into timescales where resistive effects can play a role, similar n=1 perturbations can be found. The coupling of different linearly unstable toroidal harmonics in the JOREK simulation broadens the magnetic energy spectrum and ergodises the plasma edge region, resulting in a more localised pressure perturbation. These effects are not observed in VMEC, because closed magnetic flux surfaces are enforced. Despite the sensitivity of JOREK results on the assumed resistivity, saturated states can be found using both approaches that are in reasonable agreement, even for this more advanced case.
description: Submitted to Physics of Plasmas, with revisions from review process included
Quantitative analysis of amino acid excretion by Methanothermobacter marburgensis under N2-fixing conditions: data 1
Creators: name: Reischl, Barbara
name: Rittmann, Simon Karl-Maria Rasso
Year: 2023
Subjects: subject: Biotreibstoffe
subject: Biofuels
subject: ÖFOS 2012 -- TECHNISCHE WISSENSCHAFTEN (2) -- Industrielle Biotechnologie (209) -- Industrielle Biotechnologie (2090) -- Biotreibstoffe (209003)
subject: ÖFOS 2012 -- TECHNICAL SCIENCES (2) -- Industrial Biotechnology (209) -- Industrial Biotechnology (2090) -- Biofuels (209003)
subject: Mikrobiologie
subject: Microbiology
subject: FOS: Biological sciences
subject: ÖFOS 2012 -- NATURWISSENSCHAFTEN (1) -- Biologie (106) -- Biologie (1060) -- Mikrobiologie (106022)
subject: ÖFOS 2012 -- NATURAL SCIENCES (1) -- Biology (106) -- Biology (1060) -- Microbiology (106022)
subject: Fermentation
subject: ÖFOS 2012 -- TECHNISCHE WISSENSCHAFTEN (2) -- Industrielle Biotechnologie (209) -- Industrielle Biotechnologie (2090) -- Fermentation (209005)
subject: ÖFOS 2012 -- TECHNICAL SCIENCES (2) -- Industrial Biotechnology (209) -- Industrial Biotechnology (2090) -- Fermentation (209005)
subject: Industrielle Biotechnologie
subject: Industrial biotechnology
subject: FOS: Industrial biotechnology
subject: ÖFOS 2012 -- TECHNISCHE WISSENSCHAFTEN (2) -- Industrielle Biotechnologie (209) -- Industrielle Biotechnologie (2090) -- Industrielle Biotechnologie (209006)
subject: ÖFOS 2012 -- TECHNICAL SCIENCES (2) -- Industrial Biotechnology (209) -- Industrial Biotechnology (2090) -- Industrial biotechnology (209006)
subject: Archaea
subject: Biotechnology
subject: Methanogens

description: Data to: Quantitative analysis of amino acid excretion by Methanothermobacter marburgensis under N2-fixing conditions
Sensitivity kernels for transmission fiber optics
Creators: name: Fichtner, Andreas
name: Bogris, Adonis
name: Bowden, Daniel
name: Lentas, Konstantinos
name: Melis, Nicos
name: Nikas, Thomas
name: Simos, Christos
name: abd, Iraklis Simos
name: Smolinski, Krystyna
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Fiber-optic sensing technologies based on transmission offer an alternative to scattering-based Distributed Acoustic Sensing (DAS). Being able to interrogate fibers that are thousands of kilometers long, opens opportunities for seismological studies of remote regions, including ocean basins. However, by averaging deformation along the fiber, transmission systems only produce integrated and not distributed measurements. Here we develop a formalism to calculate sensitivity kernels with respect to (Earth) structure, using optical phase delay measurements. With this, we demonstrate that transmission-based sensing can effectively provide distributed measurements when the phase delay time series is dissected into different windows. The extent to which a potentially useful sensitivity coverage can be achieved, depends on the fiber geometry, and specifically on its local curvature. This work establishes a theoretical foundation for both tomographic inversions and experimental design, using transmission-based optical sensing.
description: 5 pages, 4 figures
Cellular automata that generate symmetrical patterns give singular functions
Creators: name: Kawaharada, Akane
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 26A30, 28A80, 37B15, 68Q80

description: In this paper, we mainly study linear one-dimensional and two-dimensional elementary cellular automata that generate symmetrical spatio-temporal patterns. For spatio-temporal patterns of cellular automata from the single site seed, we normalize the number of nonzero states of the patterns, take the limits, and give one-variable functions for the limit sets. We can obtain a one-variable function for each limit set and show that the resulting functions are singular functions, which are non-constant, are continuous everywhere, and have a zero derivative almost everywhere. We show that for Rule 90, a one-dimensional elementary cellular automaton (CA), and a two-dimensional elementary CA, the resulting functions are Salem's singular functions. We also discuss two nonlinear elementary CAs, Rule 22, and Rule 126. Although their spatio-temporal patterns are different from that of Rule 90, their resulting functions from the number of nonzero states equal the function of Rule 90.
description: 26 pages, 16 figures
Hydrodynamic signatures in thermal transport in devices based on 2D materials: an ab initio study
Creators: name: Raya-Moreno, Martí
name: Carrete, Jesús
name: Cartoixà, Xavier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the features arising from hydrodynamic effects in graphene and phosphorene devices with finite heat sources, using ab initio calculations to go beyond Callaway's model and inform a full linearized scattering operator, and solving the phonon Boltzmann transport equation through energy-based deviational Monte Carlo methods. We explain the mechanisms that create those hydrodynamic features, showing that boundary scattering and the relation of sample dimensions to the nonlocal length are the determinant factors, regardless of the relative importance of normal versus resistive scattering. From this point of view, the nonlocal length reflects the ability of scattering to randomize the heat flux, and we show that approximations made on the scattering operator may have, through the value of nonlocal length, qualitative consequences on the signatures of hydrodynamic behavior.
description: 16 pages, 19 figures
title: Ambivaland: cultural ambivalence in Newfoundland
Creators: name: Rangsch, Rona
Publisher: name: Memorial University of Newfoundland
publisherIdentifier: https://ror.org/04haebc03
publisherIdentifierScheme: ROR
Year: 2024

description: This project revalues the often underrated concept of ambivalence as a distinct concept pregnant with creative potentialities and applies it to settler Newfoundland culture as a research lens. In the process, our understanding and image of the place are enriched by reinterpreting a collection of charged contexts, which have hitherto been considered little related, as belonging to a pervasive and potentially creative web of cultural ambivalence. Contexts studied include the European colonization of the island, the precariousness in Newfoundland outports, the Smallwood era's sociopolitical tangle, clashes between resource exploitation and love of the land, settler Newfoundlanders' non-singular colonial identity, and the place's puzzling quality as both centre and periphery. In terms of research questions, the project asks what a meaningful and productive understanding of ambivalence looks like and how it can be used to develop a richer understanding of settler Newfoundland.1
Methodologically, the research is based on discourse analysis with a focus on problematization, abductive reasoning, transversality, and speculation. These approaches share the capacity to open alternative trajectories of reasoning through the radical questioning or active ignoring of existing explanatory systems. This tenor is imperative for a project that attempts to reshuffle both the conceptual and interpretive packs by using an undervalued concept (ambivalence) to re-map a jagged terrain (an array of tensions in settler Newfoundland).
Conceptual key findings include the unambiguity of ambivalence and its overlap with creativity. Within the Newfoundland case study, the lens of cultural ambivalence challenges supposedly demarcated spheres of agency and power in both colonial and postcolonial spheres and exposes Newfoundlanders' enhanced capacity for creativity. Moreover, it allows me to debunk a number of persistent myths and to provide others with actual content. Finally, by assembling a variety of contexts not studied in this constellation before under the umbrella of cultural ambivalence, I am able to identify correlations that have previously gone unnoticed or underappreciated. The resulting web of ambivalence provides a rhizomatic explanatory grid that establishes a creative facet of the place and exposes new leverage points for addressing cultural tensions. This recommends cultural ambivalence as a potent prism for borderlands with complex colonial histories more generally.
1Please note that, with the local settler society and culture as my object of study, my focus is on the island part of the province of Newfoundland and Labrador, where the large majority of the settler population resides.
Distance-based approach to quantum coherence and nonclassicality
Creators: name: Ares, Laura
name: Luis, Alfredo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a coherence-based approach to nonclassical behavior by means of distance measures. We develop a quantitative relation between coherence and nonclassicality quantifiers, which establish the nonclassicality as the maximum quantum-coherence achievable. We compute the coherence of several representative examples and discuss whether the theory may be extended to reference observables with continuous spectra.
title:  La construction nationale syrienne face aux dynamiques identitaires et communautaires
Creators: name: Taha, Zakaria
Publisher: name: Roma TrE-Press
Year: 2016

description: Il movimento di contestazione siriano  lanciato nel marzo 2011 ha dato una visibilità alle comunità etniche e confessionali (kurdi, turcomanni, assiri, cristiani...) che a lungo erano rimasti dissimulati in una Siria, sotto il regime del Baath dal 1963, considerata come uno Stato forte, e al riparo dalle divisioni comunitarie. In un contesto di guerra civile, e in un Vicino Oriente  fragilizzato dal settarismo, le dinamiche identitarie costituiscono una sfida per lo Stato siriano e rappresentano una minaccia per la sua integrità territoriale e la sua unità nazionale. Se queste dinamiche identitarie marcano la crisi strutturale dello Stato e della sua legittimità, sollevano anche la questione della costruzione nazionale siriana. Si tratta di leggere l’attuale crisi dello Stato attraverso e alla luce delle poste in gioco  regionali e internazionali (confessionalizzazione dei conflitti, crisi economica, tensioni sunniti/sciiti, arabi/curdi, maggioranza/minoranza...).
description: Vers un nouveau Moyen-Orient? États arabes en crise entre logiques de division et sociétés civiles
Additional file 11 of Analysis of transcriptomic differences between NK603 maize and near-isogenic varieties using RNA sequencing and RT-qPCR
Creators: name: Ali, Sina-Elisabeth Ben
name: Draxler, Agnes
name: Poelzl, Diana
name: Agapito-Tenfen, Sarah
name: Hochegger, Rupert
name: Haslberger, Alexander G.
name: Brandes, Christian
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 11. KEGG-KOBAS annotation.
Particles on Demand for flows with strong discontinuities
Creators: name: Kallikounis, N. G.
name: Dorschner, B.
name: Karlin, I. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Particles on Demand formulation of kinetic theory [B. Dorschner, F. Bösch and I. V. Karlin, {\it Phys. Rev. Lett.} {\bf 121}, 130602 (2018)] is used to simulate a variety of compressible flows with strong discontinuities in density, pressure and velocity. Two modifications are applied to the original formulation of the Particles on Demand method. First, a regularization by Grad's projection of particles populations is combined with the reference frame transformations in order to enhance stability and accuracy. Second, a finite-volume scheme is implemented which allows tight control of mass, momentum and energy conservation. The proposed model is validated with an array of challenging one- and two-dimensional benchmarks of compressible flows, including hypersonic and near-vacuum situations, Richtmyer-Meshkov instability, double Mach reflection and astrophysical jet. Excellent performance of the modified Particles on Demand method is demonstrated beyond the limitations of other lattice Boltzmann-like approaches to compressible flows.
Formation of Dust Rings and Gaps in Non-ideal MHD Disks Through Meridional Gas Flows
Creators: name: Hu, Xiao
name: Li, Zhi-Yun
name: Zhu, Zhaohuan
name: Yang, Chao-Chin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Rings and gaps are commonly observed in the dust continuum emission of young stellar disks. Previous studies have shown that substructures naturally develop in the weakly ionized gas of magnetized, non-ideal MHD disks. The gas rings are expected to trap large mm/cm-sized grains through pressure gradient-induced radial dust-gas drift. Using 2D (axisymmetric) MHD simulations that include ambipolar diffusion and dust grains of three representative sizes (1~mm, 3.3~mm, and 1~cm), we show that the grains indeed tend to drift radially relative to the gas towards the centers of the gas rings, at speeds much higher than in a smooth disk because of steeper pressure gradients. However, their spatial distribution is primarily controlled by meridional gas motions, which are typically much faster than the dust-gas drift. In particular, the grains that have settled near the midplane are carried rapidly inwards by a fast accretion stream to the inner edges of the gas rings, where they are lifted up by the gas flows diverted away from the midplane by a strong poloidal magnetic field. The flow pattern in our simulation provides an attractive explanation for the meridional flows recently inferred in HD 163296 and other disks, including both "collapsing" regions where the gas near the disk surface converges towards the midplane and a disk wind. Our study highlights the prevalence of the potentially observable meridional flows associated with the gas substructure formation in non-ideal MHD disks and their crucial role in generating rings and gaps in dust.
description: 18 pages, 15 figures, accepted by MNRAS
Additional file 1 of A Bayesian natural cubic B-spline varying coefficient method for non-ignorable dropout
Creators: name: Moore, Camille M.
name: MaWhinney, Samantha
name: Carlson, Nichole E.
name: Kreidler, Sarah
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 1 Supplementary Material.
Combining Deep Learning with Physics Based Features in Explosion-Earthquake Discrimination
Creators: name: Kong, Qingkai
name: Wang, Ruijia
name: Walter, William R.
name: Pyle, Moira
name: Koper, Keith
name: Schmandt, Brandon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geophysics (physics.geo-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This paper combines the power of deep-learning with the generalizability of physics-based features, to present an advanced method for seismic discrimination between earthquakes and explosions. The proposed method contains two branches: a deep learning branch operating directly on seismic waveforms or spectrograms, and a second branch operating on physics-based parametric features. These features are high-frequency P/S amplitude ratios and the difference between local magnitude (ML) and coda duration magnitude (MC). The combination achieves better generalization performance when applied to new regions than models that are developed solely with deep learning. We also examined which parts of the waveform data dominate deep learning decisions (i.e., via Grad-CAM). Such visualization provides a window into the black-box nature of the machine-learning models and offers new insight into how the deep learning derived models use data to make the decisions.