cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Consistency, efficiency and robustness of conditional disparity methods
Creators: name: Hooker, Giles
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: This paper considers extensions of minimum-disparity estimators to the problem of estimating parameters in a regression model that is conditionally specified; that is where a parametric model describes the distribution of a response $y$ conditional on covariates $x$ but does not specify the distribution of $x$. We define these estimators by estimating a non-parametric conditional density estimates and minimizing a disparity between this estimate and the parametric model averaged over values of $x$. The consistency and asymptotic normality of such estimators is demonstrated for a broad class of models in which response and covariate vectors can take both discrete and continuous values and incorportates a wide set of choices for kernel-based conditional density estimation. It also establishes the robustness of these estimators for a broad class of disparities. As has been observed in Tamura and Boos (J. Amer. Statist. Assoc. 81 (1986) 223--229), minimum disparity estimators incorporating kernel density estimates of more than one dimension can result in an asymptotic bias that is larger that $n^{-1/2}$ and we characterize a similar bias in our results and show that in specialized cases it can be eliminated by appropriately centering the kernel density estimate. We also demonstrate empirically that bootstrap methods can be employed to reduce this bias and to provide robust confidence intervals. In order to demonstrate these results, we establish a set of $L_1$-consistency results for kernel-based estimates of centered conditional densities.
description: Published at http://dx.doi.org/10.3150/14-BEJ678 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
VP13-01 Voltage-controlled magnetic anisotropy gradient-driven skyrmion-based half-adder and full-adder
Creators: Sarwath Sara
Chandrasekhar Murapaka
Arabinda Haldar
Publisher: name: IEEE
Year: 2025

Spintronic devices have revolutionized the way we process or store information compared to dissipative charge-based electronics [1]. Among various spin-based technologies, skyrmions – topologically protected nano-size spin textures have emerged as the most promising alternative for future data processing [2]. We have proposed and demonstrated a skyrmion-based novel nanomagnetic device that executes Half-Adder and Full-Adder logic operations by driving the skyrmions through voltage-controlled magnetic anisotropy gradient (VCMA). VCMA is a more desirable method of driving the skyrmions as it avoids Joule heating to a greater extent, suppressing skyrmion and device instability issues. The proposed method of moving the skyrmions is energy efficient as it consumes much less energy than the skyrmion motion driven by electric currents[3]. This research presents a robust and scalable design for skyrmion-based logic devices, paving the way for advanced, energy-efficient data processing technologies.References: 1 S. A. Wolf, D. D. Awschalom, and R. A. Buhrman, Science 294(5546):1488-95 (2001). 2 Fert, A., Reyren, N. & Cros, V. Nat Rev Mater 2, 17031 (2017) 3 W. Kang, Y. Ran, and W. Zhao, IEEE Trans Nanotechnol,16, 387–395(2017). .
Spintronic devices have revolutionized the way we process or store information compared to dissipative charge-based electronics [1]. Among various spin-based technologies, skyrmions – topologically protected nano-size spin textures have emerged as the most promising alternative for future data processing [2]. We have proposed and demonstrated a skyrmion-based novel nanomagnetic device that executes Half-Adder and Full-Adder logic operations by driving the skyrmions through voltage-controlled magnetic anisotropy gradient (VCMA). VCMA is a more desirable method of driving the skyrmions as it avoids Joule heating to a greater extent, suppressing skyrmion and device instability issues. The proposed method of moving the skyrmions is energy efficient as it consumes much less energy than the skyrmion motion driven by electric currents[3]. This research presents a robust and scalable design for skyrmion-based logic devices, paving the way for advanced, energy-efficient data processing technologies.References: 1 S. A. Wolf, D. D. Awschalom, and R. A. Buhrman, Science 294(5546):1488-95 (2001). 2 Fert, A., Reyren, N. & Cros, V. Nat Rev Mater 2, 17031 (2017) 3 W. Kang, Y. Ran, and W. Zhao, IEEE Trans Nanotechnol,16, 387–395(2017). .
High-resolution spectroscopic analysis of four new chemically peculiar stars
Creators: name: Roriz, M. P.
name: Pereira, C. B.
name: Junqueira, S.
name: Lugaro, M.
name: Drake, N. A.
name: Sneden, C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present detailed chemical compositions of four stars on the first-ascent red giant branch that are classified as chemically peculiar, but lack comprehensive analyses at high spectral resolution. For BD+03°2688, HE 0457-1805, HE 1255-2324, and HE 2207-1746, we derived metallicities [Fe/H] $=-1.21$, $-0.19$, $-0.31$, and $-0.55$, respectively, indicating a range in Galactic population membership. In addition to atmospheric parameters, we extracted elemental abundances for 28 elements, including the evolutionary-sensitive CNO group and $^{12}$C/$^{13}$C ratios. Novel results are also presented for the heavy elements tungsten and thallium. All four stars have very large enhancements of neutron-capture elements, with high [La/Eu] ratios indicating enrichments from the slow neutron capture ($s$-process). To interpret these abundances, all indicative of [$s$/Fe] $> 1.0$, we compared our results with data from literature, as well as with predictions from the Monash and FRUITY $s$-process nucleosynthesis models. BD+03°2688, HE 1255-2324, and HE 2207-1746 show C/O $>1$, while HE 0457-1805 has C/O $<1$. Since HE 0457-1805 and HE 1255-2324 are binary stars, their peculiarities are attributable to mass transfer. We identified HE 0457-1805 as a new barium giant star, and HE 1255-2324 as a new CH star, in fact a higher metallicity analogue CEMP-$r/s$ star; the single object reported in literature so far with similar characteristics is the barium star HD 100503 ([Fe/H] $= -0.72$). A systematic monitoring is needed to confirm the binary nature of BD+03°2688 and HE 2207-1746, which are probably CH stars.
description: 33 pages, 24 figures, accepted for publication in MNRAS
title: Magnus Wintergerst: Franconofurd, Band 1: Die Befunde der karolingisch-ottonischen Pfalz aus den Frankfurter Altstadtgrabungen 1953–1993 (Schriften des Archäologischen Museums Frankfurt 22/1). Frankfurt 2007
Creators: name: Wemhoff, Matthias
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Magnus Wintergerst: Franconofurd, Band 1: Die Befunde der karolingisch-ottonischen Pfalz aus den Frankfurter Altstadtgrabungen 1953–1993 (Schriften des Archäologischen Museums Frankfurt 22/1). Frankfurt 2007. 177 S. ISBN 978-3-88270-501-0
XGAPS: a sub-arcsecond cross-match of Galactic Plane Surveys
Creators: name: Scaringi, S.
name: Monguio, M.
name: Knigge, C.
name: Fratta, M.
name: Gaensicke, B.
name: Groot, P. J.
name: Rebassa-Mansergas, A.
name: Toloza, O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a sub-arcsecond cross-match of Gaia Data Release 3 (DR3) against the INT Galactic Plane Surveys (IGAPS) and the United Kingdom Infrared Deep Sky Survey (UKIDSS). The resulting cross-match of Galactic Plane Surveys (XGAPS) provides additional precise photometry ($U_{RGO}$, $g$, $r$, $i$, H$α$, $J$, $H$ and $K$) to the Gaia photometry. In building the catalogue, proper motions given in Gaia DR3 are wound back to match the epochs of the IGAPS constituent surveys (INT Photometric \ha Survey of the Northern Galactic Plane, IPHAS, and the UV-Excess Survey of the northern Galactic plane, UVEX) and UKIDSS, ensuring high proper motion objects are appropriately cross-matched. The catalogue contains 33,987,180 sources. The requirement of $>3σ$ parallax detection for every included source means that distances out to 1--1.5 kpc are well covered. In producing XGAPS we have also trained a Random Forest classifier to discern targets with problematic astrometric solutions. Selection cuts based on the classifier results can be used to clean colour-magnitude and colour-colour diagrams in a controlled and justified manner, as well as producing subsets of astrometrically reliable targets. We provide XGAPS as a 111 column table. Uses of the catalogue include the selection of Galactic targets for multi-object spectroscopic surveys as well as identification of specific Galactic populations.
description: Accepted for publication in MNRAS. 9 pages, 7 figures. Appendix with column description included. The full XGAPS catalogue will be available on VizieR, and is temporarily hosted on https://www.astro.dur.ac.uk/~simo/FINAL_XGAPS.fits
Symmetric Birkhoff sums in infinite ergodic theory
Creators: name: Aaronson, Jon.
name: Kosloff, Zemer
name: Weiss, Benjamin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We show that the absolutely normalized, symmetric Birkhoff sums of positive integrable functions in infinite, ergodic systems never converge pointwise even though they may be almost surely bounded away from zero and infinity.
The Jain-Monrad criterion for rough paths and applications to random Fourier series and non-Markovian Hörmander theory
Creators: name: Friz, Peter K.
name: Gess, Benjamin
name: Gulisashvili, Archil
name: Riedel, Sebastian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We discuss stochastic calculus for large classes of Gaussian processes, based on rough path analysis. Our key condition is a covariance measure structure combined with a classical criterion due to Jain and Monrad [Ann. Probab. 11 (1983) 46-57]. This condition is verified in many examples, even in absence of explicit expressions for the covariance or Volterra kernels. Of special interest are random Fourier series, with covariance given as Fourier series itself, and we formulate conditions directly in terms of the Fourier coefficients. We also establish convergence and rates of convergence in rough path metrics of approximations to such random Fourier series. An application to SPDE is given. Our criterion also leads to an embedding result for Cameron-Martin paths and complementary Young regularity (CYR) of the Cameron-Martin space and Gaussian sample paths. CYR is known to imply Malliavin regularity and also Itô-like probabilistic estimates for stochastic integrals (resp., stochastic differential equations) despite their (rough) pathwise construction. At last, we give an application in the context of non-Markovian Hörmander theory.
description: Published at http://dx.doi.org/10.1214/14-AOP986 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Coherent Dissociation of Relativistic N-12 Nuclei
Creators: name: Kattabekov, R. R.
name: Mamatkulov, K. Z.
name: Alikulov, S. S.
name: Artemenkov, D. A.
name: Bekmirzaev, R. N.
name: Bradnova, V.
name: Zarubin, P. I.
name: Zarubina, I. G.
name: Kondratieva, N. V.
name: Kornegrutsa, N. K.
name: Krivenkov, D. O.
name: Malakhov, A. I.
name: Olimov, K.
name: Peresadko, N. G.
name: Polukhina, N. G.
name: Rukoyatkin, P. A.
name: Rusakova, V. V.
name: Stanoeva, R.
name: Kharlamov, S. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The dissociation of relativistic $^{12}$N nuclei having a momentum of 2 GeV/c per nucleon and undergoing the most peripheral interactions in a track emulsion is studied. The picture of charged topology of product ensembles of relativistic fragments and special features of their angular distributions are presented.
description: ISSN 1063-7788, Pleiades Publishing, Ltd., 2013. 5 pages, 4 figures
Spin structure and dynamics of the topological semimetal Co$_{3}$Sn$_{2-x}$In$_{x}$S$_{2}$
Creators: name: Neubauer, Kelly J.
name: Ye, Feng
name: Shi, Yue
name: Malinowski, Paul
name: Gao, Bin
name: Taddei, Keith M.
name: Bourges, Philippe
name: Ivanov, Alexandre
name: Chu, Jiun-Haw
name: Dai, Pengcheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The anomalous Hall effect (AHE), typically observed in ferromagnetic (FM) metals with broken time-reversal symmetry, depends on electronic and magnetic properties. In Co$_{3}$Sn$_{2-x}$In$_{x}$S$_{2}$, a giant AHE has been attributed to Berry curvature associated with the FM Weyl semimetal phase, yet recent studies report complicated magnetism. We use neutron scattering to determine the spin dynamics and structures as a function of $x$ and provide a microscopic understanding of the AHE and magnetism interplay. Spin gap and stiffness indicate a contribution from Weyl fermions consistent with the AHE. The magnetic structure evolves from $c$-axis ferromagnetism at $x$ = 0 to a canted antiferromagnetic (AFM) structure with reduced $c$-axis moment and in-plane AFM order at $x$ = 0.12 and further reduced $c$-axis FM moment at $x$ = 0.3. Since noncollinear spins can induce non-zero Berry curvature in real space acting as a fictitious magnetic field, our results revealed another AHE contribution, establishing the impact of magnetism on transport.
Salvatore Biasco sul capitalismo contemporaneo e l’economia politica
Creators: name: Sau, Lino
Publisher: name: Moneta e Credito
Year: 2023

description: In questo lavoro si cerca di mostrare la prospettiva critica di Biasco sul capitalismo contemporaneo, evidenziando la rilevanza e l’attualità del suo pensiero sia per l’analisi teorica che per la politica economica. Biasco ha infatti saputo coniugare la teoria con la pratica della politica economica. Il suo metodo ‘pragmatico’, oltre ad essere del tutto originale e per molti versi innovativo, consente di riconsiderare il dibattito tra l’approccio mainstream e quello keynesiano, nella convinzione, propria di Biasco, che quest’ultimo possa essere ancora molto fecondo per interpretare le dinamiche e l’evoluzione del sistema economico contemporaneo. L’approccio keynesiano rielaborato da Biasco riesce a spiegare e interpretare fenomeni endogeni al capitalismo quali l’instabilità finanziaria e le crisi, che il mainstream concepisce, al più, come eventi esogeni e imprevedibili.
description: Moneta e Credito, V. 76 N. 303 (2023): Settembre
Witnessing the star-formation quenching in $L_{*}$ ellipticals
Creators: name: Dhiwar, Suraj
name: Saha, Kanak
name: Dekel, Avishai
name: Paswan, Abhishek
name: Pandey, Divya
name: Cortesi, Arianna
name: Pandge, Mahadev
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the evolution of $L_{*}$ elliptical galaxies in the color-magnitude diagram in terms of their star-formation history and environment, in an attempt to learn about their quenching process. We have visually extracted 1109 $L_{*}$ galaxies from a sample of 36500 galaxies that were spectroscopically selected from Stripe82 of the Sloan Digital Sky Survey. From this sample we have selected 51 ellipticals based on their surface-brightness profile being well-fitted by a single S$\acute{e}$rsic profile with S$\acute{e}$rsic indices $3
description: Accepted for publication in MNRAS
Literature Review of Naturally-Occurring Petroleum Hydrocarbons in Oil Sands Mining Reclamation Practice
Creators: Paragon Soil and Environmental Consulting Inc.
Publisher: name: University of Alberta Library
Year: 2018

Paragon Soil and Environmental Consulting Inc. (Paragon) was contracted to complete a literature review of naturally-occurring petroleum hydrocarbons (NPHCs) in oil sands mining reclamation practice for the Canadian Oil Sands Innovation Alliance (COSIA) Joint Industry Project (JIP) partners Syncrude Canada Ltd. (Syncrude), Imperial Oil Resources Ltd. (Imperial), and Canadian Natural Resources Ltd. (CNRL). The main objective of the COSIA JIP on PHCs in oil sands mining reclamation practice (the Project) is to provide capping thickness and cover design guidance to industry members. (As cited in introduction.)
Study of the resonance contributions in the $Ξ_{b}^{-} \rightarrow pK^{-}K^{-}$ decay
Creators: name: Wang, Zhong-Yu
name: Luo, Si-Qiang
name: Sun, Zhi-Feng
name: Xiao, C. W.
name: Liu, Xiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decay process $Ξ_{b}^{-} \rightarrow pK^{-}K^{-}$ is studied with the final state interaction approach by considering the contributions from the $S$-wave meson-baryon interactions, and also the intermediate state $Λ(1520)$ in the $D$-wave. The low-lying resonances $Λ(1405)$ and $Λ(1670)$ have significant contributions, which are both dynamically generated from the $S$-wave final state interactions with isospin $I=0$. Furthermore, the $Λ(1520)$ state also has important contributions from $D$-wave. With these resonances contributions, the experimental data of the lower $pK^{-}$ invariant mass distributions are well described. We also discuss the contribution of another resonance in the $S$-wave with isospoin $I=1$, which cannot be ignored. Moreover, some of the branching fractions obtained for the corresponding decay channels are consistent with the experimental measurements.
description: 18 pages, 6 figures, 3 tables, published in Phys. Rev. D
Alpha-stable random walk has massive thorns
Creators: name: Bendikov, Alexander
name: Cygan, Wojciech
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G50, 31B15

description: We introduce and study a class of random walks defined on the integer lattice $ \mathbb{Z} ^d$ -- a discrete space and time counterpart of the symmetric $α$-stable process in $\mathbb{R} ^d$. When $0< α<2$ any coordinate axis in $\mathbb{Z} ^d$, $d\geq 3$, is a non-massive set whereas any cone is massive. We provide a necessary and sufficient condition for the thorn to be a massive set.
description: 26 pages, 2 figures
Skyrmion magnetic structure of an ordered FePt monolayer deposited on Pt(111)
Creators: name: Polesya, S.
name: Mankovsky, S.
name: Bornemann, S.
name: Ködderitzsch, D.
name: Minár, J.
name: Ebert, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The effect of the Dzyaloshinsky-Moriya interaction on the magnetic structure of an ordered FePt monolayer deposited on Pt (111) surface has been investigated. In the ground state, the pronounced anisotropic geometry of the FePt layer with alternating Fe and Pt chains gives rise to a helimagnetic structure with a strong difference in the helicity period along the chains and perpendicular to them. In the presence of an external magnetic field, the region of stable Skyrmion magnetic structures in the $B-T$ phase diagram has been demonstrated via Monte Carlo simulations using the parameters obtained within first-principles electronic structure calculations. The present study demonstrates clearly that the ratio of the exchange coupling parameters J/D for a deposited magnetic film - being of central importance for the formation of Skyrmions - can be manipulated by growing an overlayer of 2-dimensional (2D) compounds with the atoms carrying spontaneous magnetic moments separated by the atoms of non-magnetic elements.
title: Manfred Gläser (Hrsg.): Die Befestigungen (Lübecker Kolloquium zur Stadtarchäologie im Hanseraum 7). Lübeck 2010
Creators: name: Wagener, Olaf
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Manfred Gläser (Hrsg.): Die Befestigungen (Lübecker Kolloquium zur Stadtarchäologie im Hanseraum 7). Lübeck: Schmidt-
Römhild 2010. 918 Seiten, zahlreiche SW-Abbildungen, ISBN 978-3-7950-1298-4
title: Angelika Speckmann: Ländlicher Hausbau in Westfalen vom 6./7. Jahrhundert bis zum 12./13. Jahrhundert (Bodenaltertümer Westfalens 49). Mainz 2010
Creators: name: Herrmann, Volker
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Angelika Speckmann: Ländlicher Hausbau in Westfalen vom 6./7. Jahrhundert bis zum 12./13. Jahrhundert (Bodenaltertümer Westfalens 49). Mainz: Philipp von Zabern 2010. 183 Seiten, 62 SW-Abbildungen, 122 Seiten Katalog, 77 SW-Tafeln, 1 Klapptafel mit Chronologieübersicht, ISBN 978-3-8053-4257-5
Predicting nonlinear dynamics of optical solitons in optical fiber via the SCPINN
Creators: name: Fang, Yin
name: Bo, Wen-Bo
name: Wang, Ru-Ru
name: Wang, Yue-Yue
name: Dai, Chao-Qing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The strongly-constrained physics-informed neural network (SCPINN) is proposed by adding the information of compound derivative embedded into the soft-constraint of physics-informed neural network(PINN). It is used to predict nonlinear dynamics and the formation process of bright and dark picosecond optical solitons, and femtosecond soliton molecule in the single-mode fiber, and reveal the variation of physical quantities including the energy, amplitude, spectrum and phase of pulses during the soliton transmission. The adaptive weight is introduced to accelerate the convergence of loss function in this new neural network. Compared with the PINN, the accuracy of SCPINN in predicting soliton dynamics is improved by 5-11 times. Therefore, the SCPINN is a forward-looking method to study the modeling and analysis of soliton dynamics in the fiber.
Shattering and growth of cold clouds in galaxy clusters: the role of radiative cooling, magnetic fields and thermal conduction
Creators: name: Jennings, Fred
name: Beckmann, Ricarda
name: Sijacki, Debora
name: Dubois, Yohan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In galaxy clusters, the hot intracluster medium (ICM) can develop a striking multi-phase structure around the brightest cluster galaxy. Much work has been done on understanding the origin of this central nebula, but less work has studied its eventual fate after the originally filamentary structure is broken into individual cold clumps. In this paper we perform a suite of 30 (magneto-)hydrodynamical simulations of kpc-scale cold clouds with typical parameters as found by galaxy cluster simulations, to understand whether clouds are mixed back into the hot ICM or can persist. We investigate the effects of radiative cooling, small-scale heating, magnetic fields, and (anisotropic) thermal conduction on the long-term evolution of clouds. We find that filament fragments cool on timescales shorter than the crushing timescale, fall out of pressure equilibrium with the hot medium, and shatter, forming smaller clumplets. These act as nucleation sites for further condensation, and mixing via Kelvin-Helmholtz instability, causing cold gas mass to double within 75 Myr. Cloud growth depends on density, as well as on local heating processes, which determine whether clouds undergo ablation- or shattering-driven evolution. Magnetic fields slow down but don't prevent cloud growth, with the evolution of both cold and warm phase sensitive to the field topology. Counter-intuitively, anisotropic thermal conduction increases the cold gas growth rate compared to non-conductive clouds, leading to larger amounts of warm phase as well. We conclude that dense clumps on scales of $500$ pc or more cannot be ignored when studying the long-term cooling flow evolution of galaxy clusters.
description: 21 pages, 26 figures, Accepted for Publication in MNRAS
Layer-switching cost and optimality in information spreading on multiplex networks
Creators: name: Min, Byungjoon
name: Gwak, Sang-Hwan
name: Lee, Nanoom
name: Goh, K. -I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study a model of information spreading on multiplex networks, in which agents interact through multiple interaction channels (layers), say online vs.\ offline communication layers, subject to layer-switching cost for transmissions across different interaction layers. The model is characterized by the layer-wise path-dependent transmissibility over a contact, that is dynamically determined dependently on both incoming and outgoing transmission layers. We formulate an analytical framework to deal with such path-dependent transmissibility and demonstrate the nontrivial interplay between the multiplexity and spreading dynamics, including optimality. It is shown that the epidemic threshold and prevalence respond to the layer-switching cost non-monotonically and that the optimal conditions can change in abrupt non-analytic ways, depending also on the densities of network layers and the type of seed infections. Our results elucidate the essential role of multiplexity that its explicit consideration should be crucial for realistic modeling and prediction of spreading phenomena on multiplex social networks in an era of ever-diversifying social interaction layers.
description: 15 pages, 7 figures
From Galactic Chemical Evolution to Cosmic Supernova Rates Synchronized with Core-Collapse Supernovae Limited to the Narrow Progenitor Mass Range
Creators: name: Tsujimoto, Takuji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive ($\geq$8 $M_\odot$) stars perish via one of two fates: core-collapse supernovae (CCSNe), which release synthesized heavy elements, or failed supernovae, thereby forming black holes. In the conventional Galactic chemical evolution (GCE) scheme, a substantial portion of massive stars, e.g., all stars in the mass range of 8-100 $M_{\odot},$ are assumed to enrich the Galaxy with their nucleosynthetic products. However, this hypothesis conflicts with the observations, namely, few CCSNe whose progenitor stars are more massive than $\sim$18 $M_{\odot}.$ Here, we show that the chemical characteristics shaped by local thin disk stars are compatible with the predictions by enrichment via CCSNe limited to less massive progenitors in the new paradigm of Galactic dynamics that allows stars to migrate from the inner disk. This renewed GCE model predicts that the bursting star formation events$-$which are considered to take place in the Galactic bulge as well as in the thick disk$-$generate more numerous low-mass CCSNe than those expected from the locally determined canonical initial mass function. This finding suggests a high rate of CCSNe in early-type galaxies, which reflects a unique cosmic history of the CCSN rate. With considerable contributions from these galaxies to the cosmic star formation rates in the early Universe, we predict a more steeply increasing slope of the CCSN rate with increasing redshift than that in proportion to cosmic star formation. This predicted redshift evolution agrees well with the measured rates for 0 $\lesssim$ z $\lesssim$ 0.8; however, its predicted CCSN rate for higher-$z$ calls for more precise data from future surveys.
description: 7 pages including 4 figures, accepted for publication in MNRAS
title: Gregor K. Stasch/Frank Verse (Hrsg.): König Konrad I. Herrschaft und Alltag. Begleitband zur Ausstellung 911 – Königswahl zwischen Karolingern und Ottonen (Kataloge Vonderau-Museum Fulda 28). Fulda 2011.
Creators: name: Lammers, Lammers
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Gregor K. Stasch/Frank Verse (Hrsg.): König Konrad I. Herrschaft und Alltag. Begleitband zur Ausstellung 911 – Königswahl zwischen Karolingern und Ottonen (Kataloge Vonderau-Museum Fulda 28). Fulda: Imhof 2011. 240 Seiten mit 218 SW- und Farbabbildungen, ISBN 978-3-86568-700-5
Comment on Comparison of Holocene temperature reconstructions based on GISP2 multiple-gas-isotope measurements by Doring and Leuenberger (2022)
Creators: name: Kobashi, Takuro
name: Nakaegawa, Tosiyuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Doring and Lueneberger (Doring and Leuenberger, 2022) conducted an important work on Greenland temperature reconstruction from occluded air in an ice core for the Holocene by comparing various reconstructed temperatures. From their analyses, they conclude that their d15N temperature reconstruction (d15N method) is the best method among the compared methods, and Kobashi et al. temperature reconstruction with d15Nexcess (Kobashi et al., 2017) should not be used for climate interpretation because d40Ar and d15Nexcess data are not accurate enough. However, they failed to recognize important issues to reach their conclusions. Therefore, we comment on those points to make it clear that their conclusions are erroneous.
Brane Inflation and Moduli Stabilization on Twisted Tori
Creators: name: Gur-Ari, Guy
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider supergravity compactifications on 6-dimensional twisted tori, which are 5-torus fibrations of the circle. The motion of branes on such manifolds can lead to power-law potentials at low energy, that may be useful for inflation. We classify the possible low energy potentials one can obtain by wrapping branes on different cycles of the fibre. Turning to the problem of moduli stabilization in such models, we prove a no-go result for solutions with parametrically small cosmological constant, under certain assumptions for the orientifolds and D-branes. We also consider the role of discrete Wilson lines in moduli stabilization on general closed manifolds, and show that gauge invariance restricts their contributions to the effective potential. We derive the allowed discrete Wilson lines in massive Type IIA supergravity on twisted tori. We conclude with a detailed example, computing the effective potentials in a class of models involving a twisted torus and an orientifold 6-plane.
description: 31+20 pages. v2: added references. v3: JHEP version
title: Pia Heberer: Das Kloster Hornbach in der Pfalz. Baugeschichte und Sakraltopographie (Forschungen zur pfälzischen Archäologie 3). Speyer 2010
Creators: name: Lobbedey, Uwe
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Pia Heberer: Das Kloster Hornbach in der Pfalz. Baugeschichte und Sakraltopographie (Forschungen zur pfälzischen Archäologie 3). Speyer 2010. 357 Seiten, ISBN 978-3-936113-02-0
Chandra Fails to Detect X-ray Emission from Type Ia SN 2018fhw/ASASSN-18tb
Creators: name: Dwarkadas, Vikram V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on Chandra X-ray observations of ASASSN-18tb/SN 2018fhw, a low luminosity Type Ia supernova that showed a H line in its optical spectrum. No X-ray emission was detected at the location of the SN. Upper limits to the luminosity of up to 3 $\times 10^{39}$ erg s$^{-1}$ are calculated, depending on the assumed spectral model, temperature and column density. These are compared to two Type Ia-CSM SNe, SN 2005gj and SN 2002ic, that have been observed with Chandra in the past. The upper limits are lower than the X-ray luminosity found for the Type Ia-CSM SN 2012ca, the only Type Ia SN to have been detected in X-rays. Consideration of various scenarios for the H$α$ line suggests that the density of the surrounding medium at the time of H$α$ line detection could have been as high as 10$^8$ cm$^{-3}$, but must have decreased below 5 $\times\, 10^6$ cm$^{-3}$ at the time of X-ray observation. Continual X-ray observations of SNe which show a H line in their spectrum are necessary in order to establish Type Ia SNe as an X-ray emitting class.
description: 9 pages, 1 figure, 3 tables. Accepted to MNRAS
A Short Proof that the Extension Complexity of the Correlation Polytope Grows Exponentially
Creators: name: Kaibel, Volker
name: Weltge, Stefan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 52Bxx, 90C57, 94Axx

description: We establish that the extension complexity of the nXn correlation polytope is at least 1.5^n by a short proof that is self-contained except for using the fact that every face of a polyhedron is the intersection of all facets it is contained in. The main innovative aspect of the proof is a simple combinatorial argument showing that the rectangle covering number of the unique-disjointness matrix is at least 1.5^n, and thus the nondeterministic communication complexity of the unique-disjointness predicate is at least .58n. We thereby slightly improve on the previously best known lower bounds 1.24^n and .31n, respectively.
description: 4 pages; the journal version contains a mistake in the definition of the set R_G in Lemma 2, which is fixed here
Optical and X-ray studies of Be/X-ray binary 1A 0535+262 during its 2020 giant outburst
Creators: name: Chhotaray, Birendra
name: Jaisawal, Gaurava K.
name: Kumari, Neeraj
name: Naik, Sachindra
name: Kumar, Vipin
name: Jana, Arghajit
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report results obtained from the optical and X-ray studies of the Be/X-ray binary 1A 0535+262/HD 245770 during the 2020 October giant X-ray outburst, using the 1.2 m telescope at Mount Abu Infrared observatory and AstroSat, respectively. The peak flux of the outburst was recorded to be around 11 Crab in the 15-50 keV range, the highest ever observed from the pulsar. We performed optical observations in the 6000-7200 angstroms band before, during, and after the outburst to investigate the evolution of the circumstellar disc of the Be star between 2020 February and 2022 February. Our optical spectra exhibit prominent emission lines at 6563 angstroms (H I), 6678 angstroms (He I), and 7065 angstroms (He I). We found a significantly variable Halpha line in the spectra. The single-peaked line profile appeared asymmetric with broad red- & blue-wings in the data before and during the outburst. The post-outburst observations, however, resulted in a double-peaked profile with asymmetry in the blue-wing. Our observations before the outburst confirmed a larger Be disc that decreased in size as the outburst progressed. Furthermore, the observed variabilities in the Halpha line profile and parameters suggest the presence of a highly misaligned, precessing, and warped Be disc. AstroSat observation of the pulsar detected pulsations at around 103.55 s in the light curve up to 110 keV. We found strongly energy-dependent pulse profiles with increasing contribution of the pulsing component in hard X-rays. The broadband spectral fitting in the 0.7-90.0 keV range confirmed the presence of the known cyclotron resonance scattering feature at around 46.3 keV.
description: 18 pages, 13 figures, This paper has been accepted for publication in MNRAS
A note on linearized stability of Schwarzschild thin-shell wormholes with variable equations of state
Creators: name: Varela, Victor
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss how the assumption of variable equation of state (EoS) allows the elimination of the instability at equilibrium throat radius $a_0=3M$ featured by previous Schwarzschild thin-shell wormhole models. Unobstructed stability regions are found for three choices of variable EoS. Two of these EoS entail linear stability at every equilibrium radius. Particularly, the thin-shell remains stable as $a_0$ approaches the Schwarzschild radius $2M$. A perturbative analysis of the wormhole equation of motion is carried out in the case of variable Chaplygin EoS. The squared proper angular frequency $ω_0^2$ of small throat oscillations is linked with the second derivative of the thin-shell potential. In various situations $ω_0^2$ remains positive and bounded in the limit $a_0\rightarrow 2M$.
description: Fifth version. 15 pages. Almost completely rewritten. Extended analysis. New references
On the recursive construction of indecomposable quiver representations
Creators: name: Weist, Thorsten
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16G20

description: For a fixed root of a quiver, it is a very hard problem to construct all or even only one indecomposable representation with this root as dimension vector. We investigate two methods which can be used for this purpose. In both cases we get an embedding of the category of representations of a new quiver into the category of representations of the original one which increases dimension vectors. Thus it can be used to construct indecomposable representations of the original quiver recursively. Actually, it turns out that there is a huge class of representations which can be constructed using these methods.
description: 20 pages, final version
Infra-solvmanifolds of $\Sol_1^4$-geometry
Creators: name: Lee, Kyung-Bai
name: Thuong, Scott
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: The purpose of this paper is to classify all compact manifolds modeled on the 4-dimensional solvable Lie group $Sol_1^4$. The maximal compact subgroup of $Isom(Sol_1^4)$ is $D_4=\mathbb Z_4\rtimes\mathbb Z_2$. We shall exhibit an infra-solvmanifold with $Sol_1^4$-geometry whose holonomy is $D_4$. This implies that all possible holonomy groups do occur; $\{1\}$, $\mathbb Z_2$ (5 families), $\mathbb Z_4$, $\mathbb Z_2\times\mathbb Z_2$ (5 families),and $\mathbb Z_4\rtimes\mathbb Z_2$ (2 families). This includes the classification of 3-dimensional infra-$Sol$ manifolds.
On $q$-Analogs of Some Families of Multiple Harmonic Sum and Multiple Zeta Star Value Identities
Creators: name: Pilehrood, Khodabakhsh Hessami
name: Pilehrood, Tatiana Hessami
name: Zhao, Jianqiang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M32

description: In recent years, there has been intensive research on the ${\mathbb Q}$-linear relations between multiple zeta (star) values. In this paper, we prove many families of identities involving the $q$-analog of these values, from which we can always recover the corresponding classical identities by taking $q\to 1$. The main result of the paper is the duality relations between multiple zeta star values and Euler sums and their $q$-analogs, which are generalizations of the Two-one formula and some multiple harmonic sum identities and their $q$-analogs proved by the authors recently. Such duality relations lead to a proof of the conjecture by Ihara et al. that the Hoffman $\star$-elements $ζ^{\star}(s_1,\dots,s_r)$ with $s_i\in\{2,3\}$ span the vector space generated by multiple zeta values over ${\mathbb Q}$.
description: The abstract and references are updated. Two new theorems, Theorem 1.4, Theorem 5.4, and Corollary 1.6 are added
Mental state language use and theory of mind development throughout childhood: A cross-sectional study of children from ages 3 to 12
Creators: name: Sarin Akpulat
name: Richardson, Hilary
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Developmental Psychology
subject: Social and Behavioral Sciences
subject: language
subject: theory of mind
subject: development

description: Theory of mind (ToM) is the ability to reason about the mental states of others, such as their desires, beliefs, intentions, and emotions. Children’s use of mental state language is an important window into ToM development, a correlation between children's mental state language use and ToM development has been documented (Bartsch & Wellman, 1995; Lecce, 2009). Our goal is to first test whether there is a correlation between the frequency of mental state utterances and ToM development, controlling for age and language, in a large sample with a wide age range of children who completed the same ToM task. We will also test if the strength of the correlation between mental state language use and ToM development varies by age. Our second goal is to examine a novel measure, number of distinct mental state words used, as a plausible alternative or complementary measure of children’s ToM development. To address these goals, we will conduct opportunistic analyses on an existing dataset of 3–12-year-old children who completed a 20-min ToM story booklet task, which includes 27 2-alternative forced choice (AFC) and 26 free-response explanation questions. This context may be particularly useful for measuring children's mental state language— it is naturalistic in that single items are not repeated but structured in that items prompt children to produce mental state words.
Birational Mori fiber structures of Q-Fano 3-fold weighted complete intersections, II
Creators: name: Okada, Takuzo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E08, 14J30, 14J45

description: In this paper we study 14 families among 85 families of anticanonically embedded Q-Fano threefolds weighted complete intersections of codimension 2 and show that every quasismooth member is birationally birigid, that is, it is birational to another Q-Fano threefold but not birational to any other Mori fiber space.
description: 53 pages. To appear in J. Reine Angew. Math
Photometric redshift estimation of galaxies in the DESI Legacy Imaging Surveys
Creators: name: Li, Changhua
name: Zhang, Yanxia
name: Cui, Chenzhou
name: Fan, Dongwei
name: Zhao, Yongheng
name: Wu, Xue-Bing
name: Zhang, Jing-Yi
name: Tao, Yihan
name: Han, Jun
name: Xu, Yunfei
name: Li, Shanshan
name: Mi, Linying
name: He, Boliang
name: Kang, Zihan
name: Wang, Youfen
name: Yang, Hanxi
name: Yang, Sisi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The accurate estimation of photometric redshifts plays a crucial role in accomplishing science objectives of the large survey projects. The template-fitting and machine learning are the two main types of methods applied currently. Based on the training set obtained by cross-correlating the DESI Legacy Imaging Surveys DR9 galaxy catalogue and SDSS DR16 galaxy catalogue, the two kinds of methods are used and optimized, such as EAZY for template-fitting approach and CATBOOST for machine learning. Then the created models are tested by the cross-matched samples of the DESI Legacy Imaging SurveysDR9 galaxy catalogue with LAMOST DR7, GAMA DR3 and WiggleZ galaxy catalogues. Moreover three machine learning methods (CATBOOST, Multi-Layer Perceptron and Random Forest) are compared, CATBOOST shows its superiority for our case. By feature selection and optimization of model parameters, CATBOOST can obtain higher accuracy with optical and infrared photometric information, the best performance ($MSE=0.0032$, $σ_{NMAD}=0.0156$ and $O=0.88$ per cent) with $g \le 24.0$, $r \le 23.4$ and $z \le 22.5$ is achieved. But EAZY can provide more accurate photometric redshift estimation for high redshift galaxies, especially beyond the redhisft range of training sample. Finally, we finish the redshift estimation of all DESI DR9 galaxies with CATBOOST and EAZY, which will contribute to the further study of galaxies and their properties.
description: Accepted for publication in MNRAS. 14 pages, 9 figures, 11 tables
Deep Drilling in the Time Domain with DECam: Survey Characterization
Creators: name: Graham, Melissa L.
name: Knop, Robert A.
name: Kennedy, Thomas
name: Nugent, Peter E.
name: Bellm, Eric
name: Catelan, Márcio
name: Patel, Avi
name: Smotherman, Hayden
name: Soraisam, Monika
name: Stetzler, Steven
name: Aldoroty, Lauren N.
name: Awbrey, Autumn
name: Baeza-Villagra, Karina
name: Bernardinelli, Pedro H.
name: Bianco, Federica
name: Brout, Dillon
name: Clarke, Riley
name: Clarkson, William I.
name: Collett, Thomas
name: Davenport, James R. A.
name: Fu, Shenming
name: Gizis, John E.
name: Heinze, Ari
name: Hu, Lei
name: Jha, Saurabh W.
name: Jurić, Mario
name: Kalmbach, J. Bryce
name: Kim, Alex
name: Lee, Chien-Hsiu
name: Lidman, Chris
name: Magee, Mark
name: Martínez-Vázquez, Clara E.
name: Matheson, Thomas
name: Narayan, Gautham
name: Palmese, Antonella
name: Phillips, Christopher A.
name: Rabus, Markus
name: Rest, Armin
name: Rodríguez-Segovia, Nicolás
name: Street, Rachel
name: Vivas, A. Katherina
name: Wang, Lifan
name: Wolf, Nicholas
name: Yang, Jiawen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: This paper presents a new optical imaging survey of four deep drilling fields (DDFs), two Galactic and two extragalactic, with the Dark Energy Camera (DECam) on the 4 meter Blanco telescope at the Cerro Tololo Inter-American Observatory (CTIO). During the first year of observations in 2021, $>$4000 images covering 21 square degrees (7 DECam pointings), with $\sim$40 epochs (nights) per field and 5 to 6 images per night per filter in $g$, $r$, $i$, and/or $z$, have become publicly available (the proprietary period for this program is waived). We describe the real-time difference-image pipeline and how alerts are distributed to brokers via the same distribution system as the Zwicky Transient Facility (ZTF). In this paper, we focus on the two extragalactic deep fields (COSMOS and ELAIS-S1), characterizing the detected sources and demonstrating that the survey design is effective for probing the discovery space of faint and fast variable and transient sources. We describe and make publicly available 4413 calibrated light curves based on difference-image detection photometry of transients and variables in the extragalactic fields. We also present preliminary scientific analysis regarding Solar System small bodies, stellar flares and variables, Galactic anomaly detection, fast-rising transients and variables, supernovae, and active galactic nuclei.
description: 22 pages, 17 figures, 2 tables. Accepted to MNRAS