cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Localization and melting of interfaces in the two-dimensional quantum Ising model
Creators: name: Balducci, Federico
name: Gambassi, Andrea
name: Lerose, Alessio
name: Scardicchio, Antonello
name: Vanoni, Carlo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the non-equilibrium evolution of coexisting ferromagnetic domains in the two-dimensional quantum Ising model -- a setup relevant in several contexts, from quantum nucleation dynamics and false-vacuum decay scenarios to recent experiments with Rydberg-atom arrays. We demonstrate that the quantum-fluctuating interface delimiting a large bubble can be studied as an effective one-dimensional system through a "holographic" mapping. For the considered model, the emergent interface excitations map to an integrable chain of fermionic particles. We discuss how this integrability is broken by geometric features of the bubbles and by corrections in inverse powers of the ferromagnetic coupling, and provide a lower bound to the timescale after which the bubble is ultimately expected to melt. Remarkably, we demonstrate that a symmetry-breaking longitudinal field gives rise to a robust ergodicity breaking in two dimensions, a phenomenon underpinned by Stark many-body localization of the emergent fermionic excitations of the interface.
description: 7+1 pages, 4 figures
Adhesion energy of single wall carbon nanotube loops on various substrates
Creators: name: Li, Tianjun
name: AYARI, Anthony
name: Bellon, Ludovic
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The physics of adhesion of one-dimensional nano structures such as nanotubes, nano wires, and biopolymers on different material substrates is of great interest for the study of biological adhesion and the development of nano electronics and nano mechanics. In this paper, we present force spectroscopy experiments of a single wall carbon nanotube loop using our home-made interferometric atomic force microscope. Characteristic force plateaux during the peeling process allows us to access to quantitative values of the adhesion energy per unit length on various substrates: graphite, mica, platinum, gold and silicon. By combining a time-frequency analysis of the deflexion of the cantilever, we access to the dynamic stiffness of the contact, providing more information on the nanotube configurations and its intrinsic mechanical properties.
Anthropological views of St. Cyril of Turov in The context of The Christian doctrine of man
Creators: name: Vdovina O. Ya
Publisher: name: Палеоросия. Древняя Русь во времени, в личностях, в идеях
Year: 2016
Subjects: ДРЕВНЯЯ РУСЬ
КИРИЛЛ ТУРОВСКИЙ
БОГОСЛОВИЕ
АСКЕТИКА
АНТРОПОЛОГИЯ
MEDIEVAL RUSSIA
CYRIL OF TUROV
THEOLOGY
ASCETICISM
ANTHROPOLOGY

description: Though the homiletic and political efforts of the Bishop of Turov have already been studied, his theological views, unfortunately, have not yet been subjected to detailed study. The author attempts to map out and fill this lacuna. This article presents the final chapters of this work, which have now been edited and made ready for publication in this issue. The first two sections of this work were published in the first and fourth issues of the Almanac Drevnyaya Rusʹ vo Vremeni, Lichnostyakh, v Ideyakh.
Turbulence Driving by Interstellar Pickup Ions in the Outer Solar Wind
Creators: name: Isenberg, Philip A.
name: Vasquez, Bernard J.
name: Smith, Charles W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We revisit the question of how the unstable scattering of interstellar pickup ions (PUIs) may drive turbulence in the outer solar wind, and why the energy released into fluctuations by this scattering appears to be significantly less than the standard bispherical prediction. We suggest that energization of the newly picked-up ions by the ambient turbulence during the scattering process can result in a more spherical distribution of PUIs, and reduce the generated fluctuation energy to a level consistent with the observations of turbulent intensities and core solar wind heating. This scenario implies the operation of a self-regulation mechanism that maintains the observed conditions of turbulence and heating in the PUI-dominated solar wind.
description: To be published in The Astrophysical Journal
The Magellanic Stream and Debris Clouds
Creators: name: For, B. -Q.
name: Staveley-Smith, L.
name: Matthews, D.
name: McClure-Griffiths, N. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the discrete clouds and filaments in the Magellanic Stream using a new high-resolution survey of neutral hydrogen (\HI) conducted with H75 array of the Australia Telescope Compact Array, complemented by single-dish data from the Parkes Galactic All-Sky Survey (GASS). From the individual and combined datasets, we have compiled a catalog of 251 clouds and list their basic parameters, including a morphological description useful for identifying cloud interactions. We find an unexpectedly large number of head-tail clouds in the region. The implication for the formation mechanism and evolution is discussed. The filaments appear to originate entirely from the Small Magellanic Cloud and extend into the northern end of the Magellanic Bridge.
description: Manuscript format, 40 pages, 17 figures, 2 tables. Accepted for publication in ApJ
Catalog of magnetic white dwarfs with hydrogen dominated atmospheres
Creators: name: Amorim, L. L.
name: Kepler, S. O.
name: Külebi, Baybars
name: Jordan, S.
name: Romero, A. D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: White dwarfs are excellent research laboratories as they reach temperatures, pressures, and magnetic fields that are unattainable on Earth. To better understand how these three physical parameters interact with each other and with other stellar features, we determined the magnetic field strength for a total of 804 hydrogen-rich white dwarfs of which 287 are not in the literature. We fitted the spectra observed with the Sloan Digital Sky Survey using atmospheric models that consider the Zeeman effect due to the magnetic field at each point in the stellar disk. Comparing magnetic and non-magnetic WDs, the literature already shows that the magnetic ones have on average higher mass than the non-magnetic. In addition to that, magnetic fields are more common in cooler WDs than in hotter WDs. In consonance, we found that those with higher magnetic field strengths tend to have higher masses, and lower temperatures, for which models indicate the crystallization process has already started. This reinforces the hypothesis that the field is being generated and/or amplified in the cooling process of the white dwarf. Our sample constitutes the largest number of white dwarfs with determined magnetic fields to date.
description: Accepted in ApJ on 27th December 2022
Targeting Hospitalized Patients for Early Discharge Planning Intervention
Creators: name: Bowles, Kathryn H
name: Knafl, George J
name: Holland, Diane E
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: The purpose of the study was to describe the ability of an evidence-based discharge planning decision support tool to identify and prioritize patients appropriate for early discharge planning intervention. Specifically we aimed to determine whether patients with a high Early Screen for Discharge Planning (ESDP) score report more problems and continuing care needs in the first few weeks after discharge than patients with low ESDP scores.
Photometric study of the pulsating, eclipsing binary OO Dra
Creators: name: Zhang, X. B.
name: Deng, L. C.
name: Tian, J. F.
name: Wang, K.
name: Sun, J. J.
name: Liu, Q. L.
name: Xin, H. Q.
name: Zhou, Q.
name: Yan, Z. Z.
name: Luo, Z. Q.
name: Luo, C. Q.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a comprehensive photometric study of the pulsating, eclipsing binary OO Dra. Simultaneous B- and V-band photometry of the star was carried out on 14 nights. Revised orbital period and a new ephemeris were derived from the data. The first photometric solution of the binary system and the physical parameters of the component stars are determined. It reveals that OO Dra could be a detached system with the less-massive secondary component nearly filling in its Roche lobe. By subtracting the eclipsing light changes from the data, we obtained the intrinsic pulsating light curves of the hotter and massive primary component. Frequency analysis of the residuals light yields two confident pulsation modes in both B- and V-band data with the dominant frequency detected at 41.865 c/d. A brief discussion concerning the evolutionary status and the pulsation nature of the binary system is finally given.
description: 19 Pages, 4 figures
Discovery of a magnetic Dirac system with large intrinsic non-linear Hall effect
Creators: name: Mazzola, Federico
name: Ghosh, Barun
name: Fujii, Jun
name: Acharya, Gokul
name: Mondal, Debashis
name: Rossi, Giorgio
name: Bansil, Arun
name: Farias, Daniel
name: Hu, Jin
name: Agarwal, Amit
name: Politano, Antonio
name: Vobornik, Ivana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic materials exhibiting topological Dirac fermions are attracting significant attention for their promising technological potential in spintronics. In these systems, the combined effect of the spin-orbit coupling and magnetic order enables the realization of novel topological phases with exotic transport properties, including the anomalous Hall effect and magneto-chiral phenomena. Herein, we report experimental signature of topological Dirac antiferromagnetism in TaCoTe2 via angle-resolved photoelectron spectroscopy (ARPES) and first-principles density functional theory (DFT) calculations. In particular, we find the existence of spin-orbit coupling-induced gaps at the Fermi level, consistent with the manifestation of a large intrinsic non-linear Hall conductivity. Remarkably, we find that the latter is extremely sensitive to the orientation of the Néel vector, suggesting TaCoTe2 a suitable candidate for the realization of non-volatile spintronic devices with an unprecedented level of intrinsic tunability.
title: Charakterystyka porządku prawnego administracji – źródła prawa administracyjnego (pkt a–d)
Creators: name: Lisowski, Piotr
Publisher: name: E-Wydawnictwo. Prawnicza i Ekonomiczna Biblioteka Cyfrowa. Wydział Prawa, Administracji i Ekonomii Uniwersytetu Wrocławskiego
Year: 2020

description: Problematyka źródeł prawa administracyjnego należy do niepomijalnej sfery rozważań nauki prawa administracyjnego, istotnie determinując sytuacje prawne administrowanych oraz organizację i funkcjonowanie administracji publicznej. Nawiązanie do ustaleń czynionych w tej materii przez prof. dr. Tadeusza Bigę uzmysławia progres, jaki dokonał się w skali, zasięgu i szczegółowości normatywizacji tej problematyki, sprzyjając zarazem eksponowaniu stopnia skomplikowania uwarunkowań, konstrukcji i relacji towarzyszących konstruowaniu i funkcjonowaniu współczesnych źródeł prawa administracyjnego. Nie ulega też wątpliwości, że można mówić o predylekcjach wrocławskiej szkoły administratywistycznej do podejmowania badań i analiz dotyczących sfery źródeł prawa administracyjnego.
Probing neutron-skin thickness with free spectator neutrons in ultracentral high-energy isobaric collisions
Creators: name: Liu, Lu-Meng
name: Zhang, Chun-Jian
name: Zhou, Jia
name: Xu, Jun
name: Jia, Jiangyong
name: Peng, Guang-Xiong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We show that the yield ratio of free spectator neutrons produced in high-energy $^{96}$Zr+$^{96}$Zr to $^{96}$Ru+$^{96}$Ru collisions is a clean probe of the neutron-skin thickness of colliding nuclei and the slope parameter $L$ of the symmetry energy. The idea is demonstrated based on the proton and neutron density distributions via a state-of-the-art Skyrme-Hartree-Fock-Bogolyubov calculation. Among spectator nucleons given by the Glauber model, free spectator neutrons include those from direct production that survive from clusterization as well as those from deexcitation of heavy clusters described by the popular GEMINI model. More free neutrons are produced in collisions of $^{96}$Zr nucleus due to its larger neutron skin, compared to those produced in collisions of $^{96}$Ru nucleus with a smaller neutron skin. The difference of the free spectator neutron yield is further increased with the increasing difference of the neutron-skin thickness between $^{96}$Zr and $^{96}$Ru with a larger $L$ value, and the increase in ultracentral collisions is particularly insensitive to model details and experimental uncertainties. Since the production of free spectator neutrons is not affected by the complicated dynamics in the mid-rapidity region, the ratio of their multiplicities in ultracentral isobaric collisions is a robust observable for constraining the neutron skin and $L$ value.
description: 6 pages, 4 figures
Complex oxide growth using simultaneous in situ RHEED and x-ray reflectivity: When is one layer complete?
Creators: name: Sullivan, M. C.
name: Ward, M. J.
name: Gutierrez-Llorente, Araceli
name: Adler, Eli R.
name: Joress, H.
name: Woll, A.
name: Brock, J. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: During layer-by-layer homoepitaxial growth, both the Reflection High-Energy Electron Diffraction (RHEED) intensity and the x-ray reflection intensity will oscillate, and each complete oscillation indicates the addition of one monolayer of material. However, it is well documented, but not well understood, that the phase of the RHEED oscillations is not constant and thus the maxima in the RHEED intensity oscillations do not necessarily occur at the completion of a layer. We demonstrate this using simultaneous in situ x-ray reflectivity and RHEED during layer-by-layer growth of SrTiO$_3$. We show that we can control the RHEED oscillation phase by changing the pre-growth substrate annealing conditions, changing the RHEED oscillation phase by nearly 180$^\circ$. In addition, during growth via pulsed laser deposition, the exponential relaxation times between each laser pulse can be used to determine when a layer is complete, independent of the phase of the RHEED oscillation.
description: 6 pages, 3 figures
Five-Year Data and Prognostic Factor Analysis of Oxaliplatin and Irinotecan Combinations for Advanced Colorectal Cancer: N9741
Creators: name: Sanoff, Hanna K.
name: Campbell, Megan E.
name: Morton, Roscoe F.
name: Goldberg, Richard M.
name: Sargent, Daniel J.
name: Findlay, Brian P.
name: Pitot, Henry C.
name: Williamson, Stephen K.
name: Fuchs, Charles S.
name: Ramanathan, Ramesh K.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: In this report, we update survival (OS) and time-to-progression (TTP) data for the Intergroup trial N9741 after a median 5 years of follow-up by using risk-stratified and prognostic factor analyses to determine if treatment outcomes differ in specific patient subgroups.
Investigating time variability of X-ray absorption in Swift GRBs
Creators: name: Valan, Vlasta
name: Larsson, Josefin
name: Ahlgren, Björn
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The existence of excess absorption in the X-ray spectra of GRBs is well known, but the primary location of the absorbing material is still uncertain. To gain more knowledge about this, we have performed a time-resolved analysis of the X-ray spectra of 199 GRBs observed by the \textit{Swift} X-ray telescope, searching for evidence of a decreasing column density ($N_{\mathrm{H,intr}}$) that would indicate that the GRBs are ionizing matter in their surroundings. We structured the analysis as Bayesian inference and used an absorbed power-law as our baseline model. We also explored alternative spectral models in cases where decreasing absorption was inferred. The analysis reveals seven GRBs that show signs of a decrease in $N_{\mathrm{H,intr}}$, but we note that alternative models for the spectral evolution cannot be ruled out. We conclude that the excess absorption in the vast majority of GRBs must originate on large scales of the host galaxies and/or in the intergalactic medium. Our results also imply that an evolving column density is unlikely to affect the spectral analysis of the early X-ray spectra of GRBs. In line with this, we show that estimating the total $N_{\mathrm{H,intr}}$ from early {\it Swift} data in Window Timing mode reveals the same increasing trend with redshift as previous results based on data taken at later times, but with tighter constraints.
description: Accepted for publication in ApJ
BiofilmQuant: A Computer-Assisted Tool for Dental Biofilm Quantification
Creators: name: Mansoor, Awais
name: Patsekin, Valery
name: Scherl, Dale
name: Robinson, J. Paul
name: Rajwa, Bartlomiej
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Dental biofilm is the deposition of microbial material over a tooth substratum. Several methods have recently been reported in the literature for biofilm quantification; however, at best they provide a barely automated solution requiring significant input needed from the human expert. On the contrary, state-of-the-art automatic biofilm methods fail to make their way into clinical practice because of the lack of effective mechanism to incorporate human input to handle praxis or misclassified regions. Manual delineation, the current gold standard, is time consuming and subject to expert bias. In this paper, we introduce a new semi-automated software tool, BiofilmQuant, for dental biofilm quantification in quantitative light-induced fluorescence (QLF) images. The software uses a robust statistical modeling approach to automatically segment the QLF image into three classes (background, biofilm, and tooth substratum) based on the training data. This initial segmentation has shown a high degree of consistency and precision on more than 200 test QLF dental scans. Further, the proposed software provides the clinicians full control to fix any misclassified areas using a single click. In addition, BiofilmQuant also provides a complete solution for the longitudinal quantitative analysis of biofilm of the full set of teeth, providing greater ease of usability.
description: 4 pages, 4 figures, 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2014)
Phonetic Corpus of Estonian Spontaneous Speech v1.3
Creators: name: Lippus, Pärtel
name: Aare, Kätlin
name: Malmi, Anton
name: Tuisk, Tuuli
name: Teras, Pire
Publisher: name: Institute of Estonian and General Linguistics, University of Tartu
Year: 2023
Subjects: speech corpus
phonetic annotation
time aligned annotation
multimodal speech
dialogues
voice quality
morphological analysis
Estonian language

description: The Phonetic Corpus of Estonian Spontaneous Speech consists of recordings that have been annotated on different linguistic tiers including words and segments and their boundaries in the speech signal. The corpus mainly contains dialogues. The corpus can be used for studying different phonetic and linguistic research questions and for training various language technological applications (e.g. speech recognition, dialogue systems). In addition to the detailed phonetic segmentation the corpus has word-level annotation uses standard orthography so the corpus can be used with most NLP tools built for written language. The corpus includes: - Studio quality sound recordings, separate channels for each speaker; Spontaneous conversation between 2-3 speakers, approximately 30 minutes for each recording; - Manual transcription of words and phonemes; - 207 individual speakers in the age range of 20–85 years; - A total of 135 hours of speech recordings; - Word & phoneme level annotation of 106 hours / one milion word level intervals.
A uvbyCaHbeta CCD Analysis of the Open Cluster Standard, M67,and its Relation to NGC 752
Creators: name: Twarog, Bruce A.
name: Anthony-Twarog, Barbara J.
name: Deliyannis, Constantine P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Precision CCD uvbyCaHbeta photometry is presented of the old cluster, M67, covering one square degree with typical internal precision at the 0.005-0.020 mag level to V~17. The photometry is calibrated using standards over a wide range in luminosity and temperature from NGC 752 and zeroed to the standard system via published photoelectric observations. Relative to NGC 752, differential offsets in reddening and metallicity are derived using astrometric members, supplemented by radial-velocity information. From single-star members, offsets in the sense (M67 - NGC 752) are Delta E(b-y) = -0.005 +/-0.001 (sem) mag from 327 F/G dwarfs and Delta [Fe/H] = 0.062 +/- 0.006 (sem) dex from the combined m1 and hk indices of 249 F dwarfs, leading to E(b-y) = 0.021 +/- 0.004 (sem), and [Fe/H] = +0.030 +/- 0.016 (sem) for M67, assuming [Fe/H]{Hyades} = +0.12. With probable binaries eliminated using c1,(b-y) indices, 83 members with relative parallax errors < 0.02 generate (m-M)_0 = 8.220 +/- 0.005 (sem) for NGC 752 and an isochronal age of 1.45 +/- 0.05 Gyr. Using the same parallax restriction for 312 stars, M67 has (m-M) = 9.77 +/- 0.02 (sem), leading to an age tied solely to the luminosity of the subgiant branch of 3.70 +/- 0.03 Gyr. The turnoff color spread implies +/- 0.1 Gyr, but the turnoff morphology defines a younger age/higher mass for the stars, consistent with recent binary analysis and broad-band photometry indicating possible missing physics in the isochrones. Anomalous stars positioned blueward of the turnoff are discussed.
description: 36 pages, 8 figures. Accepted for Astronomical Journal
A Study of Stellar Spins in 15 Open Clusters
Creators: name: Healy, Brian F.
name: McCullough, P. R.
name: Schlaufman, Kevin C.
name: Kovacs, Geza
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze spectroscopic and photometric data to determine the projected inclinations of stars in 11 open clusters, placing constraints on the spin-axis distributions of six clusters. We combine these results with four additional clusters studied by Healy & McCullough (2020) and Healy et al. (2021) to perform an ensemble analysis of their spins. We find that eight out of ten constrained clusters (80%) have spin-axis orientations consistent with isotropy, and we establish a lower limit of four out of ten (40%) isotropic clusters at 75% confidence, assuming no correlation of spins between clusters. We also identify two clusters whose spin-axis distributions can be better described by a model consisting of an aligned fraction of stars combined with an isotropic distribution. However, the inclination values of these stars may be influenced by systematic error, and the small number of stars modeled as aligned in these two clusters precludes the interpretation that their stellar subsets are physically aligned. Overall, no cluster displays an unambiguous signature of spin alignment, and 97% of the stars in our sample are consistent with isotropic orientations in their respective clusters. Our results offer support for the dominance of turbulence over ordered rotation in clumps and do not suggest alignment of rotation axes and magnetic fields in protostars.
description: 35 pages, 15 figures, accepted for publication in ApJ
Multicenter, Phase II Trial of Sunitinib in Previously Treated, Advanced Non–Small-Cell Lung Cancer
Creators: name: Sanchez, Jose M.
name: Pallares, Cinta
name: Tye, Lesley
name: Selaru, Paulina
name: Govindan, Ramaswamy
name: Belani, Chandra P.
name: Rosell, Rafael
name: Scagliotti, Giorgio V.
name: Novello, Silvia
name: Chao, Richard C.
name: Atkins, James N.
name: Brahmer, Julie R.
name: Gillenwater, Heidi H.
name: Socinski, Mark A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Aberrant vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF) signaling have been shown to play a role in non–small-cell lung cancer (NSCLC) pathogenesis and are associated with decreased survival. We evaluated the clinical activity and tolerability of sunitinib malate (SU11248), an oral, multitargeted tyrosine kinase inhibitor that blocks the activity of receptors for VEGF and PDGF, as well as related tyrosine kinases in patients with previously treated, advanced NSCLC.
Clustering in laboratory and numerical turbulent swirling flows
Creators: name: Angriman, Sofía
name: Ferran, Amélie
name: Zapata, Florencia
name: Cobelli, Pablo J.
name: Obligado, Martin
name: Mininni, Pablo D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study the three-dimensional clustering of velocity stagnation points, of nulls of the vorticity and of the Lagrangian acceleration, and of inertial particles in turbulent flows at fixed Reynolds numbers, but under different large-scale flow geometries. To this end, we combine direct numerical simulations of homogeneous and isotropic turbulence and of the Taylor-Green flow, with particle tracking velocimetry in a von Kármán experiment. While flows have different topologies (as nulls cluster differently), particles behave similarly in all cases, indicating that Taylor-scale neutrally buoyant particles cluster as inertial particles.
Asymptotics for Time-Varying Vector MA(∞) Processes
Creators: name: Yan, Yayi
name: Gao, Jiti
name: Peng, Bin
Publisher: name: Monash University
Year: 2022
Subjects: Econometric and statistical methods
Econometrics not elsewhere classified

description: Moving average infinity (MA(∞)) processes play an important role in modeling time series data. While a strand of literature on time series analysis emphasizes the importance of modeling smooth changes over time and therefore is shifting its focus from parametric models to nonparametric ones, MA(∞) processes with constant parameters are often part of the fundamental data generating mechanism. Along this line of research, an intuitive question is how to allow the underlying data generating mechanism evolves over time. To better capture the dynamics, this paper considers a new class of time-varying vector moving average infinity (VMA(∞)) processes. Accordingly, we establish some new asymptotic properties, including the law of large numbers, the uniform convergence, the central limit theory, the bootstrap consistency, and the long-run covariance matrix estimation for the class of time-varying VMA(∞) processes. Finally, we demonstrate the empirical relevance and usefulness of the newly proposed model and estimation theory through extensive simulated and real data studies.
Hybridization effects and bond-disproportionation in the bismuth perovskites
Creators: name: Foyevtsova, Kateryna
name: Khazraie, Arash
name: Elfimov, Ilya
name: Sawatzky, George A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a microscopic description of the bond-disproportionated insulating state in the bismuth perovskites $X$BiO$_3$ ($X$=Ba, Sr) that recognizes the bismuth-oxygen hybridization as a dominant energy scale. It is demonstrated using electronic structure methods that the breathing distortion is accompanied by spatial condensation of hole pairs into local, molecular-like orbitals of the $A_{1g}$ symmetry composed of O-$2p_σ$ and Bi-$6s$ atomic orbitals of collapsed BiO$_6$ octahedra. Primary importance of oxygen $p$-states is thus revealed, in contrast to a popular picture of a purely ionic Bi$^{3+}$/Bi$^{5+}$ charge-disproportionation. Octahedra tilting is shown to enhance the breathing instability by means of a non-uniform band-narrowing. We argue that formation of localized states upon breathing distortion is, to a large extent, a property of the oxygen sublattice and expect similar hybridization effects in other perovskites involving formally high oxidation state cations.
description: 5 pages, 4 figures
Cosmological tests of the osculating Barthel-Kropina dark energy model
Creators: name: Bouali, Amine
name: Chaudhary, Himanshu
name: Hama, Rattanasak
name: Harko, Tiberiu
name: Sabau, Sorin V.
name: Martín, Marco San
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We further investigate the dark energy model based on the Finsler geometry inspired osculating Barthel-Kropina cosmology. The Barthel-Kropina cosmological approach is based on the introduction of a Barthel connection in an osculating Finsler geometry, with the connection having the property that it is the Levi-Civita connection of a Riemannian metric. From the generalized Friedmann equations of the Barthel-Kropina model, obtained by assuming that the background Riemannian metric is of the Friedmann-Lemaitre-Robertson-Walker type, an effective geometric dark energy component can be generated, with the effective, geometric type pressure, satisfying a linear barotropic type equation of state. The cosmological tests, and comparisons with observational data of this dark energy model are considered in detail. To constrain the Barthel-Kropina model parameters, and the parameter of the equation of state, we use 57 Hubble data points, and the Pantheon Supernovae Type Ia data sample. The st statistical analysis is performed by using Markov Chain Monte Carlo (MCMC) simulations. A detailed comparison with the standard $Λ$CDM model is also performed, with the Akaike information criterion (AIC), and the Bayesian information criterion (BIC) used as the two model selection tools. The statefinder diagnostics consisting of jerk and snap parameters, and the $Om(z)$ diagnostics are also considered for the comparative study of the Barthel-Kropina and $Λ$CDM cosmologies. Our results indicate that the Barthel-Kropina dark energy model gives a good description of the observational data, and thus it can be considered a viable alternative of the $Λ$CDM model.
description: 23 pages, 16 figures, accepted for publication in EPJC
Variations of the harmonic components of the X-ray Pulse Profile of PSR B1509-58
Creators: name: Pradhan, Pragati
name: Paul, Biswajit
name: Raichur, Harsha
name: Paul, B. C
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We used the Fourier decomposition technique to investigate the stability of the X-ray pulse profile of a young pulsar PSR B1509-58 by studying the relative amplitudes and the phase differences of its harmonic components with respect to the fundamental using data from the Rossi X-Ray Timing Explorer. Like most young rotation powered pulsars, PSR B1509-58 has a high spin down rate. It also has less timing noise allowing accurate measurement of higher order frequency derivatives which in turn helps in study of the physics of pulsar spin down. Detailed investigation of pulse profiles over the years will help us establish any possible connection between the timing characteristics and the high energy emission characteristics for this pulsar. Further, the study of pulse profiles of short period X-ray pulsars can also be useful for using them as means of interplanetary navigation system. The X-ray pulse profile of this source has been analysed for 15 $ \rm years $ (1996-2011). The long term average amplitudes of the first, second and third harmonics (and their standard deviation for individual measurements) compared to the fundamental are 36.9 % (1.7 %), 13.4 % (1.9 %) and 9.4 % (1.8 %) respectively. Similarly, the phases of the three harmonics (and standard deviations) with respect to the fundamental are 0.36 (0.06), 1.5 (0.2), 2.5 (0.3) $\rm radian $ respectively. We do not find any significant variation of the harmonic components of the pulse profile in comparison to the fundamental.
description: 10 pages, 7 figures
Semi-Analytical Computation of Acoustic Scattering by Spheroids and Disks
Creators: name: Adelman, Ross
name: Gumerov, Nail A.
name: Duraiswami, Ramani
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Software (cs.MS)
subject: Sound (cs.SD)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Analytical solutions to acoustic scattering problems involving nonspherical shapes, such as spheroids and disks, have long been known and have many applications. However, these solutions require special functions that are not easily computable. For this reason, their asymptotic forms are typically used since they are more readily available. We explore these solutions and provide computational software for calculating their nonasymptotic forms, which are accurate over a wide range of frequencies and distances. This software, which runs in MATLAB, computes the solutions to acoustic scattering problems involving spheroids and disks by semi-analytical means, and is freely available from our webpage.
Phase II Trial of Lapatinib for Brain Metastases in Patients With Human Epidermal Growth Factor Receptor 2–Positive Breast Cancer
Creators: name: Bullitt, Elizabeth
name: Crawford, Ann
name: Van den Abbeele, Annick D.
name: Gelman, Rebecca
name: Come, Steven E.
name: Li, Xiaochun
name: Younger, Jerry
name: Hochberg, Fred
name: Henson, John W.
name: Harris, Gordon J.
name: Burstein, Harold J.
name: Winer, Eric P.
name: Liu, Minetta C.
name: Carey, Lisa A.
name: Lin, Nancy U.
name: Kasparian, Elizabeth
name: Ewend, Matthew
name: Kirsch, David G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: One third of women with advanced human epidermal growth factor receptor 2 (HER-2)–positive breast cancer develop brain metastases; a subset progress in the CNS despite standard approaches. Medical therapies for refractory brain metastases are neither well-studied nor established. We evaluated the safety and efficacy of lapatinib, an oral inhibitor of epidermal growth factor receptor (EGFR) and HER-2, in patients with HER-2–positive brain metastases.
Edge magnetization and local density of states in chiral nanoribbons
Creators: name: Carvalho, A. R.
name: Warnes, J. H.
name: Lewenkopf, C. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the edge magnetization and the local density of states of chiral graphene nanoribbons using a π-orbital Hubbard model in the mean-field approximation. We show that the inclusion of a realistic next-nearest hopping term in the tight-binding Hamiltonian changes the graphene nanoribbons band structure significantly and affects its magnetic properties. We study the behavior of the edge magnetization upon departing from half filling as a function of the nanoribbon chirality and width. We find that the edge magnetization depends very weakly in the nanoribbon width, regardless of chirality as long as the ribbon is sufficiently wide. We compare our results to recent scanning tunneling microscopy experiments reporting signatures of magnetic ordering in chiral nanoribbons and provide an interpretation for the observed peaks in the local density of states, that does not depend on the antiferromagnetic interedge interaction.
description: 9 pages, 11 figures
Optical transitions, exciton radiative decay, and valley coherence in lead chalcogenide quantum dots
Creators: name: Goupalov, S. V.
name: Ivchenko, E. L.
name: Nestoklon, M. O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose the concept of valley coherence and superradiance in the reciprocal space and show that it leads to an $N$-fold decrease of the bright exciton radiative lifetime in quantum dots (QDs) of an $N$-valley semiconductor. Next we explain why, despite this, the exciton radiative lifetimes in PbX (X = S, Se, Te) QDs, measured from the photoluminescence decay, are in the microsecond range. We also address peculiarities of the light-matter interaction in nanostructures made of narrow-gap materials with strong inter-band coupling.
description: 13 pages, 4 figures
Rigorous Simulation-based Testing for Autonomous Driving Systems–Targeting the Achilles’ Heel of Four Open Autopilots
Creators: name: anonymous, anoymous
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 400703
subject: Autonomous vehicle systems

description: Code and supplementary materials of Rigorous Simulation-based Testing for Autonomous Driving Systems–Targeting the Achilles’ Heel of Four Open Autopilots for review
Phase III Trial of Trimodality Therapy With Cisplatin, Fluorouracil, Radiotherapy, and Surgery Compared With Surgery Alone for Esophageal Cancer: CALGB 9781
Creators: name: Hollis, Donna
name: Sugarbaker, David
name: Goldberg, Richard
name: Tepper, Joel
name: Willett, Christopher
name: Mayer, Robert
name: Reed, Carolyn E.
name: Kiel, Krystyna
name: Krasna, Mark J.
name: Niedzwiecki, Donna
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: The primary treatment modality for patients with carcinoma of the esophagus or gastroesophageal junction has been surgery, although primary radiation therapy with concurrent chemotherapy produces similar results. As both have curative potential, there has been great interest in the use of trimodality therapy. To this end, we compared survival, response, and patterns of failure of trimodality therapy to esophagectomy alone in patients with nonmetastatic esophageal cancer.
X-point and divertor filament dynamics from Gas Puff Imaging on TCV
Creators: name: Wüthrich, Curdin
name: Theiler, Christian
name: Offeddu, Nicola
name: Galassi, Davide
name: de Oliveira, Diego Sales
name: Duval, Basil
name: Février, Olivier
name: Golfinopoulos, Theodore
name: Han, Woonghee
name: Marmar, Earl
name: Terry, Jim
name: Tsui, Cedric
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A new Gas Puff Imaging (GPI) diagnostic has been installed on the TCV tokamak, providing two-dimensional insights into Scrape-Off-Layer (SOL) turbulence dynamics above, at and below the magnetic X-point. A detailed study in L-mode, attached, lower single-null discharges shows that statistical properties have little poloidal variations, while vast differences are present in the 2D behaviour of intermittent filaments. Strongly elongated filaments, just above the X-point and in the divertor far-SOL, show a good consistency in shape and dynamics with field-line tracing from filaments at the outboard midplane, highlighting their connection. In the near-SOL of the outer divertor leg, shortlived, high frequency and more circular (diameter $\sim$15 sound Larmour radii) filaments are observed. These divertor-localised filaments appear born radially at the position of maximum density and display a radially outward motion with velocity $\approx$400\,m/s that is comparable to radial velocities of upstream-connected filaments. Conversely, in these discharges ($B\times\nabla B$ pointing away from the divertor), these divertor filaments' poloidal velocities differ strongly from those of upstream-connected filaments. The importance of divertor-localised filaments upon radial transport and profile broadening is explored using filament statistics and in-situ kinetic profile measurements along the divertor leg. This provides evidence that these filaments contribute significantly to electron density profile broadening in the divertor.
description: This is the version of the article before peer review or editing, as submitted by an author to IOPScience Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. 15 pages, 15 figures
Two Extreme Young Objects in Barnard 1-b
Creators: name: Hirano, Naomi
name: Liu, Fang-Chun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Two submm/mm sources in the Barnard 1b (B1-b) core, B1-bN and B1-bS, have been studied in dust continuum, H13CO+ J=1-0, CO J=2-1, 13CO J=2-1, and C18O J=2-1. The spectral energy distributions of these sources from the mid-IR to 7 mm are characterized by very cold temperatures of T_dust < 20 K and low bolometric luminosities of 0.15-0.31 L_sun. The internal luminosities of B1-bN and B1-bS are estimated to be <0.01-0.03 L_sun and ~0.1-0.2 L_sun, respectively. Millimeter interferometric observations have shown that these sources have already formed central compact objects of ~100 AU sizes. Both B1-bN and B1-bS are driving the CO outflows with low characteristic velocities of ~2-4 km/s. The fractional abundance of H13CO+ at the positions of B1-bN and B1-bS is lower than the canonical value by a factor of 4-8. This implies that significant fraction of CO is depleted onto dust grains in dense gas surrounding these sources. The observed physical and chemical properties suggest that B1-bN and B1-bS are in the earlier evolutionary stage than most of the known Class 0 protostars. Especially, the properties of B1-bN agree with those of the first hydrostatic core predicted by the MHD simulations. The CO outflow was also detected in the mid-IR source located at ~15" from B1-bS. Since the dust continuum emission was not detected in this source, the circumstellar material surrounding this source is less than 0.01 M_sun. It is likely that the envelope of this source was dissipated by the outflow from the protostar that is located to the southwest of B1-b.
description: 47 pages, 14 figures, 7 tables; accepted for publication in ApJ
Interactive Effects Panel Data Models with General Factors and Regressors
Creators: name: Peng, Bin
name: Su, Liangjun
name: Westerlund, Joakim
name: Yang, Yanrong
Publisher: name: Monash University
Year: 2022
Subjects: Econometric and statistical methods
Econometrics not elsewhere classified

description: This paper considers a model with general regressors and unobservable factors. An estimator based on iterated principal components is proposed, which is shown to be not only asymptotically normal and oracle efficient, but under certain conditions also free of the otherwise so common asymptotic incidental parameters bias. Interestingly, the conditions required to achieve unbiasedness become weaker the stronger the trends in the factors, and if the trending is strong enough unbiasedness comes at no cost at all. In particular, the approach does not require any knowledge of how many factors there are, or whether they are deterministic or stochastic. The order of integration of the factors is also treated as unknown, as is the order of integration of the regressors, which means that there is no need to pre-test for unit roots, or to decide on which deterministic terms to include in the model.
Numerical simulations of impulsively generated Alfvén waves in solar magnetic arcades
Creators: name: Chmielewski, P.
name: Murawski, K.
name: Musielak, Z. E.
name: Srivastava, A. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform numerical simulations of impulsively generated Alfvén waves in an isolated solar arcade, which is gravitationally stratified and magnetically confined. We study numerically the propagation of Alfvén waves along such magnetic structure that extends from the lower chromosphere, where the waves are generated, to the solar corona, and analyze influence of the arcade size and width of the initial pulses on the wave propagation and reflection. Our model of the solar atmosphere is constructed by adopting the temperature distribution based on the semi-empirical VAL-C model and specifying the curved magnetic field lines that constitute the asymmetric magnetic arcade. The propagation and reflection of Alfvén waves in this arcade is described by 2.5D magnetohydrodynamic equations that are numerically solved by the FLASH code. Our numerical simulations reveal that the Alfvén wave amplitude decreases as a result of a partial reflection of Alfvén waves in the solar transition region, and that the waves which are not reflected leak through the transition region and reach the solar corona. We also find the decrement of the attenuation time of Alfvén waves for wider initial pulses. Moreover, our results show that the propagation of Alfvén waves in the arcade is affected by spatial dependence of the Alfvén speed, which leads to phase-mixing that is stronger for more curved and larger magnetic arcades. We discuss processes that affect the Alfvén wave propagation in an asymmetric solar arcade and conclude that besides phase-mixing in the magnetic field configuration, plasma properties of the arcade and size of the initial pulse as well as structure of the solar transition region all play a vital role in the Alfvén wave propagation.
description: 16 pages; In Press ApJ
Characterization of irradiated RD53A pixel modules with passive CMOS sensors
Creators: name: Jofrehei, A.
name: Backhaus, M.
name: Baertschi, P.
name: Canelli, F.
name: Glessgen, F.
name: Jin, W.
name: Kilminster, B.
name: Macchiolo, A.
name: Reimers, A.
name: Ristic, B.
name: Wallny, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We are investigating the feasibility of using CMOS foundries to fabricate silicon detectors, both for pixels and for large-area strip sensors. The availability of multi-layer routing will provide the freedom to optimize the sensor geometry and the performance, with biasing structures in poly-silicon layers and MIM-capacitors allowing for AC coupling. A prototyping production of strip test-structures and RD53A compatible pixel sensors was recently completed at LFoundry in a 150$\,$nm CMOS process. This paper will focus on the characterization of irradiated and non-irradiated pixel modules, composed by a CMOS passive sensor interconnected to a RD53A chip. The sensors are designed with a pixel cell of $25\times100\,μ\mathrm{m}^2$ in case of DC coupled devices and $50\times50\,μ\mathrm{m}^2$ for the AC coupled ones. Their performance in terms of charge collection, position resolution, and hit efficiency was studied with measurements performed in the laboratory and with beam tests. The RD53A modules with LFoundry silicon sensors were irradiated to fluences up to $1.0\times10^{16}\,\frac{\mathrm{n}_\mathrm{eq}}{\mathrm{cm}^2}$.