cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigation of structural and magneto-transport properties of PdTe2 single crystals
Creators: name: Kumar, Yogesh
name: Sharma, Prince
name: Sharma, M. M.
name: Awana, V. P. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The growth and structural analysis of topological semimetal (TSM) PdTe2 were carried out in this study. The self-flux method was employed to grow the single crystals which were structurally characterized by XRD, SEM and EDAX, while the vibrational modes were observed by Raman spectroscopy. Further, the transport properties of the grown crystal are also investigated, which show the presence of the weak anti-localization effect. The low field (1Tesla) magnetoconductivity is studied by Hikami-Larkin-Nagaoka (HLN) model, and the physical parameters are extracted. Further, a quadratic term and a linear term in applied field were added in HLN model, which are accounted for quantum and classical contributions in conduction mechanism. The modified HLN model was used to study magneto-conductivity in entire field range and at temperature from 2-100 K. This study not only confirmed the growth of single crystal PdTe2, but also verified the presence of topological surface states (TSS) through the HLN analysis of magneto-transport measurements.
description: 16 Pages Text + Figs: Accepted Appl. Phys. A
Cytokine Gene Polymorphisms and Length of Gestation
Creators: name: Sorokin, Yoram
name: Rouse, Dwight J.
name: Thorp, John
name: Anderson, Garland D.
name: Iams, Jay D.
name: Ramin, Susan M.
name: Dinsmoor, Mara
name: Mercer, Brian M.
name: Thom, Elizabeth
name: Varner, Michael W.
name: Zheng, S. Lilly
name: Klebanoff, Mark A.
name: Harper, Margaret
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To estimate whether there is an association between length of gestation and gene polymorphisms that effect transcription of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), or interleukin-1β (IL-1β).
Failed Labor Induction Toward an Objective Diagnosis
Creators: name: Grobman, William A.
name: Thorp, John M.
name: Sciscione, Anthony
name: Bloom, Steven L.
name: Malone, Fergal D.
name: Iams, Jay D.
name: Spong, Catherine Y.
name: Carpenter, Marshall W.
name: Rouse, Dwight J.
name: Varner, Michael W.
name: Sorokin, Yoram
name: Weiner, Steven J.
name: Harper, Margaret
name: Caritis, Steve N.
name: Mercer, Brian M.
name: Anderson, Garland D.
name: Ramin, Susan M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To evaluate maternal and perinatal outcomes in women undergoing labor induction with an unfavorable cervix according to duration of oxytocin administration in the latent phase of labor after ruptured membranes.
Chandrasekhar-mass white dwarfs are the progenitors of a small fraction of Type Ia supernovae according to nucleosythesis constraints
Creators: name: Bravo, Eduardo
name: Piersanti, Luciano
name: Blondin, Stéphane
name: Domínguez, Inma
name: Straniero, Oscar
name: Cristallo, Sergio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The precise progenitor system of type Ia supernovae (SNe Ia), whether it is a white dwarf (WD) close to the Chandrasekhar limit or substantially less massive, has been a matter of debate for decades. Recent research by our group on the accretion and simmering phases preceding the explosion of a massive WD has shown that the central density at thermal runaway lies in the range $(3.6-6.3)\times10^9$ g cm$^{-3}$ for reasonable choices of accretion rate onto the WD and progenitor metallicity. In this work, we have computed one-dimensional simulations of the explosion of such WDs, with special emphasis on the chemical composition of the ejecta, which in all cases is extremely rich in neutronized isotopes of chromium ($^{54}$Cr) and titanium ($^{50}$Ti). We show that, in order to reconcile such a nucleosynthesis with the isotopic abundances of the Solar System, Chandrasekhar-mass white dwarfs can account for at most 26 per cent of normal-luminosity SNe Ia, or at most 20 per cent of all SNe Ia.
description: 5 pages, 1 table, 3 figures; Letter accepted by MNRAS
An Improved Constraint-Tightening Approach for Stochastic MPC
Creators: name: Lorenzen, Matthias
name: Allgöwer, Frank
name: Dabbene, Fabrizio
name: Tempo, Roberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The problem of achieving a good trade-off in Stochastic Model Predictive Control between the competing goals of improving the average performance and reducing conservativeness, while still guaranteeing recursive feasibility and low computational complexity, is addressed. We propose a novel, less restrictive scheme which is based on considering stability and recursive feasibility separately. Through an explicit first step constraint we guarantee recursive feasibility. In particular we guarantee the existence of a feasible input trajectory at each time instant, but we only require that the input sequence computed at time $k$ remains feasible at time $k+1$ for most disturbances but not necessarily for all, which suffices for stability. To overcome the computational complexity of probabilistic constraints, we propose an offline constraint-tightening procedure, which can be efficiently solved via a sampling approach to the desired accuracy. The online computational complexity of the resulting Model Predictive Control (MPC) algorithm is similar to that of a nominal MPC with terminal region. A numerical example, which provides a comparison with classical, recursively feasible Stochastic MPC and Robust MPC, shows the efficacy of the proposed approach.
description: Paper has been submitted to ACC 2015
What drives decayless kink oscillations in active region coronal loops on the Sun?
Creators: name: Mandal, Sudip
name: Chitta, Lakshmi P.
name: Antolin, Patrick
name: Peter, Hardi
name: Solanki, Sami K.
name: Auchère, Frédéric
name: Berghmans, David
name: Zhukov, Andrei N.
name: Teriaca, Luca
name: Cuadrado, Regina A.
name: Schühle, Udo
name: Parenti, Susanna
name: Buchlin, Éric
name: Harra, Louise
name: Verbeeck, Cis
name: Kraaikamp, Emil
name: Long, David M.
name: Rodriguez, Luciano
name: Pelouze, Gabriel
name: Schwanitz, Conrad
name: Barczynski, Krzysztof
name: Smith, Phil J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study here the phenomena of decayless kink oscillations in a system of active region (AR) coronal loops. Using high resolution observations from two different instruments, namely the Extreme Ultraviolet Imager (EUI) on board Solar Orbiter and the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory, we follow these AR loops for an hour each on three consecutive days. Our results show significantly more resolved decayless waves in the higher-resolution EUI data compared with the AIA data. Furthermore, the same system of loops exhibits many of these decayless oscillations on Day-2, while on Day-3, we detect very few oscillations and on Day-1, we find none at all. Analysis of photospheric magnetic field data reveals that at most times, these loops were rooted in sunspots, where supergranular flows are generally absent. This suggests that supergranular flows, which are often invoked as drivers of decayless waves, are not necessarily driving such oscillations in our observations. Similarly, our findings also cast doubt on other possible drivers of these waves, such as a transient driver or mode conversion of longitudinal waves near the loop footpoints. In conclusion, through our analysis we find that none of the commonly suspected sources proposed to drive decayless oscillations in active region loops seems to be operating in this event and hence, the search for that elusive wave driver needs to continue.
description: Accepted for publication in A&A Letters. Event movies can be downloaded from https://drive.google.com/drive/folders/1IFH17oBwJuz2U5zR4Ds_Y4oU5ZQCaVbR?usp=sharing
Fish Consumption, Erythrocyte Fatty Acids, and Preterm Birth
Creators: name: Caritis, Steve N.
name: Lai, Yinglei
name: Ramin, Susan M.
name: Iams, Jay D.
name: Varner, Michael W.
name: Klebanoff, Mark A.
name: Sorokin, Yoram
name: Harper, Margaret
name: Peaceman, Alan M.
name: Sciscione, Anthony
name: Carpenter, Marshall W.
name: Anderson, Garland D.
name: Mercer, Brian M.
name: Rouse, Dwight J.
name: Wapner, Ronald J.
name: Thorp, John
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To estimate the association between fish consumption and erythrocyte omega-3 long chain polyunsaturated fatty acids and preterm birth in a high-risk cohort.
Minimal model of an active solid deviates from equilibrium mechanics
Creators: name: Sandoval, Mario
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, the mechanical response oF an one-dimensional active solid -- defined as a network of active stochastic particles interacting by nonlinear hard springs -- subject to an external deformation force, is numerically studied and rationalized with a minimal model. It is found that an active solid made of linear springs and subject to an external stress, presents an average deformation which is independent of the system's activity. However, when the active solid is made of nonlinear hard springs, the solid's average deformation decreases with respect to a passive system under the same conditions, and as a function of activity and rotational noise in the system. The latter result may shed light on new ways to creating an active metamaterial, which could tune its stiffness by moving either its activity or rotational noise.
Motion of Spinning Particles around Black Holes
Creators: name: Ladino, Jose Miguel
name: del Valle, Carlos Andrés
name: Larrañaga, Eduard
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The motion of spinning particles around compact objects, for example a rotating stellar object moving around a supermassive black hole, is described by differential equations that are, in general, non-integrable. In this work, we present a computational code that integrates the equations of motion of a spinning particle moving in the equatorial plane of a spherically symmetric spacetime and gives a visual representation of its trajectory. This code is open source, freely available and modular, so that users may extend its application not only to the Schwarzschild metric, but also to other backgrounds.
description: 14 pages, 2 figures
System description: Isabelle/jEdit in 2014
Creators: name: Wenzel, Makarius
Publisher: name: arXiv
Year: 2014
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This is an updated system description for Isabelle/jEdit, according to the official release Isabelle2014 (August 2014). The following new PIDE concepts are explained: asynchronous print functions and document overlays, syntactic and semantic completion, editor navigation, management of auxiliary files within the document-model.
description: In Proceedings UITP 2014, arXiv:1410.7850
The relation between the Mass Accretion Rate and the Disk Mass in Class I Protostars
Creators: name: Fiorellino, Eleonora
name: Tychoniec, Lukasz
name: Manara, Carlo F.
name: Rosotti, Giovanni
name: Antoniucci, Simone
name: de Miera, Fernando Cruz-Saenz
name: Kospal, Agnes
name: Nisini, Brunella
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The evidence of a relation between the mass accretion rate and the disk mass is established for young, Class II pre-main sequence stars. This observational result opened an avenue to test theoretical models and constrain the initial conditions of the disk formation, fundamental in the understanding of the emergence of planetary systems. However, it is becoming clear that the planet formation starts even before the Class II stage, in disks around Class 0 and I protostars. We show for the first time evidence for a correlation between the mass accretion rate and the disk mass for a large sample of Class I young stars located in nearby (< 500 pc) star-forming regions. We fit our sample, finding that the Class I objects relation has a slope flatter than Class II stars, and have higher mass accretion rates and disk masses. The results are put in context of the disk evolution models.
Gestational Glucose Tolerance and Maternal Metabolic Profile at 3 Years Postpartum
Creators: name: Rich-Edwards, Janet
name: Seely, Ellen W.
name: Kleinman, Ken
name: Stuebe, Alison M.
name: Rifas-Shiman, Sheryl
name: Mantzoros, Christos
name: Gillman, Matthew W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To estimate the independent effect of gestational impaired glucose tolerance, defined as a single abnormal oral glucose tolerance test (OGTT) value, on metabolic dysfunction at 3 years postpartum.
Increasing Maternal Body Mass Index and Characteristics of the Second Stage of Labor
Creators: name: Rouse, Dwight J.
name: Sciscione, Anthony
name: Sorokin, Yoram
name: Bloom, Steven L.
name: Ramin, Susan M.
name: Robinson, Barrett K.
name: Mercer, Brian M.
name: Spong, Catherine Y.
name: Thorp, John M.
name: Malone, Fergal D.
name: Harper, Margaret
name: Mapp, Delicia C.
name: Ehrenberg, Hugh
name: Varner, Michael W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To evaluate the length of the second stage of labor in relation to increasing maternal prepregnancy BMI among nulliparous parturients, and to determine whether route of delivery differs among obese, overweight, and normal weight women reaching the second stage.
Influenza-Like Illness in Hospitalized Pregnant and Postpartum Women During the 2009–2010 H1N1 Pandemic
Creators: name: Varner, Michael W.
name: Louis, Judette M.
name: Prasad, Mona
name: Anderson, Brenna
name: Sorokin, Yoram
name: Tita, Alan T. N.
name: Sheffield, Jeanne
name: Blackwell, Sean C.
name: Van Dorsten, J. Peter
name: Rice, Madeline Murguia
name: Saade, George
name: Tolosa, Jorge E.
name: Thorp, John M.
name: Peaceman, Alan M.
name: Wapner, Ronald J.
name: Naresh, Amber
name: Spong, Catherine Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To estimate characteristics and outcomes of pregnant and immediately postpartum women hospitalized with influenza-like illness during the 2009–2010 influenza pandemic, and the factors associated with more severe illness.
Quasi-monolithic heterodyne laser interferometer for inertial sensing
Creators: name: Zhang, Yanqi
name: Guzman, Felipe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a compact heterodyne laser interferometer developed for high-sensitivity displacement sensing applications. This interferometer consists of customized prisms and waveplates assembled as a quasi-monolithic unit to realize a miniaturized system. The interferometer design adopts a common-mode rejection scheme to provide a high rejection ratio to common environmental noise. Experimental tests in vacuum show a displacement sensitivity level of 11 pm/rtHz at 100mHz, and as low as 0.6pm/rtHz above 1Hz. The prototype unit has a size of 20mm X 20mm X 10mm and weighs 4.5 grams, which allows subsequent integration into compact systems.
Obstetrician–Gynecologistsʼ Objections to and Willingness to Help Patients Obtain an Abortion
Creators: name: Harris, Lisa H.
name: Cooper, Alexandra
name: Lyerly, Anne Drapkin
name: Curlin, Farr A.
name: Rasinski, Kenneth A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To describe obstetrician–gynecologists’ (ob-gyns) views and willingness to help women seeking abortion in a variety of clinical scenarios.
Floquet edge states in a harmonically driven integer quantum Hall system
Creators: name: Zhou, Zhenyu
name: Satija, Indubala I.
name: Zhao, Erhai
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent theoretical work on time-periodically kicked Hofstadter model found robust counter-propagating edge modes. It remains unclear how ubiquitously such anomalous modes can appear, and what dictates their robustness against disorder. Here we shed further light on the nature of these modes by analyzing a simple type of periodic driving where the hopping along one spatial direction is modulated sinusoidally with time while the hopping along the other spatial direction is kept constant. We obtain the phase diagram for the quasienergy spectrum at flux 1/3 as the driving frequency $ω$ and the hopping anisotropy are varied. A series of topologically distinct phases with counter-propagating edge modes appear due to the harmonic driving, similar to the case of a periodically kicked system studied earlier. We analyze the time dependence of the pair of Floquet edge states localized at the same edge, and compare their Fourier components in the frequency domain. In the limit of small modulation, one of the Floquet edge mode within the pair can be viewed as the edge mode originally living in the other energy gap shifted in quasienergy by $\hbar ω$, i.e., by absorption or emission of a "photon" of frequency $ω$. Our result suggests that counter-propagating Floquet edge modes are generic features of periodically driven integer quantum Hall systems, and not tied to any particular driving protocol. It also suggests that the Floquet edge modes would remain robust to any static perturbations that do not destroy the chiral edge modes of static quantum Hall states.
description: 9 pages, 9 figures
The Relationship Between Maternal Glycemia and Perinatal Outcome
Creators: name: Peaceman, Alan M.
name: Varner, Michael W.
name: Caritis, Steve N.
name: Casey, Brian
name: Harper, Margaret
name: Ramin, Susan M.
name: Thorp, John M.
name: Rouse, Dwight J.
name: Saade, George
name: Carpenter, Marshall W.
name: Sorokin, Yoram
name: Catalano, Patrick
name: Tolosa, Jorge E.
name: Mele, Lisa
name: Anderson, Garland D.
name: Wapner, Ronald J.
name: Landon, Mark B.
name: Spong, Catherine Y.
name: Sciscione, Anthony
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To examine the relationship between varying degrees of maternal hyperglycemia and pregnancy outcomes.
Keyword Decisions in Sponsored Search Advertising: A Literature Review and Research Agenda
Creators: name: Yang, Yanwu
name: Li, Huiran
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.2.6
subject: 68Txx

description: In sponsored search advertising (SSA), keywords serve as the basic unit of business model, linking three stakeholders: consumers, advertisers and search engines. This paper presents an overarching framework for keyword decisions that highlights the touchpoints in search advertising management, including four levels of keyword decisions, i.e., domain-specific keyword pool generation, keyword targeting, keyword assignment and grouping, and keyword adjustment. Using this framework, we review the state-of-the-art research literature on keyword decisions with respect to techniques, input features and evaluation metrics. Finally, we discuss evolving issues and identify potential gaps that exist in the literature and outline novel research perspectives for future exploration.
description: 88 pages, 3 figures, 15 tables
Totally disconnected locally compact groups with a linear open subgroup
Creators: name: Caprace, Pierre-Emmanuel
name: Stulemeijer, Thierry
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 22D05, 20G25

description: We describe the global structure of totally disconnected locally compact groups having a linear open compact subgroup. Among the applications, we show that if a non-discrete, compactly generated, topologically simple, totally disconnected locally compact group is locally linear, then it is a simple algebraic group over a local field.
Multiverse Predictions for Habitability: Planetary Characteristics
Creators: name: Sandora, McCullen
name: Airapetian, Vladimir
name: Barnes, Luke
name: Lewis, Geraint F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent detections of potentially habitable exoplanets around sunlike stars demand increased exploration of the physical conditions that can sustain life, by whatever methods available. Insight into these conditions can be gained by considering the multiverse hypothesis; in a multiverse setting, the probability of living in our universe depends on assumptions made about the factors affecting habitability. Various proposed habitability criteria can be systematically considered to rate each on the basis of their compatibility with the multiverse, generating predictions which can both guide expectations for life's occurrence and test the multiverse hypothesis. Here, we evaluate several aspects of planetary habitability, and show that the multiverse does indeed induce strong preferences among them. We find that the notion that a large moon is necessary for habitability is untenable in the multiverse scenario, as in the majority of parameter space, moons are not necessary to maintain stable obliquity. Further, we consider various proposed mechanisms for water delivery to the early Earth, including delivery from asteroids, both during giant planet formation and a grand tack, delivery from comets, and oxidation of a primary atmosphere by a magma ocean. We find that, depending on assumptions for how habitability depends on water content, some of these proposed mechanisms are disfavored in the multiverse scenario by Bayes factors of up to several hundred.
description: 26 pages, 3 figures
The SAMI -- Fornax Dwarfs Survey II: The Stellar Mass Fundamental Plane and the Dark Matter fraction of Dwarf Galaxies
Creators: name: Eftekhari, F. Sara
name: Peletier, Reynier F.
name: Scott, Nicholas
name: Mieske, Steffen
name: Bland-Hawthorn, Joss
name: Bryant, Julia J.
name: Cantiello, Michele
name: Croom, Scott M.
name: Drinkwater, Michael J.
name: Falcon-Barroso, Jesus
name: Hilker, Michael
name: Iodice, Enrichetta
name: Napolitano, Nicola R.
name: Spavone, Marilena
name: Valentijn, Edwin A.
name: van de Ven, Glenn
name: Venhola, Aku
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore the kinematic scaling relations of 38 dwarf galaxies in the Fornax Cluster using observations from the SAMI integral field spectrograph. We focus on the Fundamental Plane (FP), defined by the physical properties of the objects (scale length, surface brightness and velocity dispersion) and the Stellar Mass (Fundamental) Plane, where surface brightness is replaced by stellar mass, and investigate their dynamical-to-stellar-mass ratio. We confirm earlier results that the Fornax dEs are significantly offset above the FP defined by massive, hot stellar systems. For the Stellar Mass (Fundamental) Plane, which shows much lower scatter, we find that young and old dwarf galaxies lie at about the same distance from the plane, all with comparable scatter. We introduce the perpendicular deviation of dwarf galaxies from the Stellar Mass Plane defined by giant early-types as a robust estimate of their DM fraction, and find that the faintest dwarfs are systematically offset above the plane, implying that they have a higher dark matter fraction. This result is confirmed when estimating the dynamical mass of our dEs using a virial mass estimator, tracing the onset of dark matter domination in low mass stellar systems. We find that the position of our galaxies on the Stellar Mass FP agrees with the galaxies in the Local Group. This seems to imply that the processes determining the position of dwarf galaxies on the FP depend on the environment in the same way, whether the galaxy is situated in the Local Group or in the Fornax Cluster.
description: 23 pages, 14 figures, accepted for publication in MNRAS
Timing of Elective Repeat Cesarean Delivery at Term and Maternal Perioperative Outcomes
Creators: name: Lai, Yinglei
name: Peaceman, Alan M.
name: Thorp, John M.
name: Mercer, Brian M.
name: OʼSullivan, Mary J.
name: Spong, Catherine Y.
name: Landon, Mark B.
name: Sibai, Baha M.
name: Caritis, Steve N.
name: Meis, Paul J.
name: Wapner, Ronald J.
name: Leveno, Kenneth J.
name: Sorokin, Yoram
name: Tita, Alan T. N.
name: Varner, Michael W.
name: Ramin, Susan M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Elective repeat cesarean delivery at 37 or 38 weeks compared to 39 completed weeks’ gestation is associated with adverse neonatal outcomes. We assessed whether delivery prior to 39 weeks is justifiable on the basis of decreased adverse maternal outcomes.
Impact of the orbital current order on the superconducting properties of the kagome superconductors
Creators: name: Jiang, Hong-Min
name: Liu, Ming-Xun
name: Yu, Shun-Li
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by recent experimental evidences signalling the chiral charge order in the vanadium-based kagome superconductors, we theoretically investigate the impact of the chiral flux charge order over the experimental outcomes for the normal and the SC properties. It is revealed that the spectral weight on the Fermi surface (FS) is partially gaped by the chiral flux charge order with the reservation of the spectral weight on the $M$ points and the midpoint between the two adjacent $M$ points, resulting in the momentum-dependent energy gap being consistent with the recent experimental observations. More importantly, by considering the influence of the chiral flux charge order, we find that a conventional fully gapped SC pairing state evolves into a nodal gap feature for the spectral weight due to the spectral gap modulations on the FS. As a result, the U-shaped density of states (DOS) deforms to the V-shaped one along with the residual DOS near the Fermi energy. These results bear some resemblance to the experimental observations, and may serve as a promising proposal to mediate the divergent or seemingly contradictory experimental outcomes about the SC pairing symmetry.
Association of Polymorphisms in Neuroprotection and Oxidative Stress Genes and Neurodevelopmental Outcomes After Preterm Birth
Creators: name: Ramin, Susan M.
name: Mercer, Brian M.
name: Lai, Yinglei
name: Clark, Erin A. S.
name: Thorp, John M.
name: Carpenter, Marshall
name: Rouse, Dwight J.
name: Costantine, Maged M.
name: Caritis, Steve N.
name: Malone, Fergal D.
name: Peaceman, Alan M.
name: Spong, Catherine Y.
name: Sorokin, Yoram
name: Miodovnik, Menachem
name: OʼSullivan, Mary J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: To estimate the associations between neuronal homeostasis, neuroprotection, and oxidative stress candidate gene polymorphisms and neurodevelopmental disability.
Towards a multi-tracer timeline of star formation in the LMC -- II. The formation and destruction of molecular clouds
Creators: name: Ward, Jacob L.
name: Kruijssen, J. M. Diederik
name: Chevance, Mélanie
name: Kim, Jaeyeon
name: Longmore, Steven N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The time-scales associated with various stages of the star formation process represent major unknowns in our understanding of galactic evolution, as well as of star and planet formation. This is the second paper in a series aiming to establish a multi-tracer time-line of star formation in the Large Magellanic Cloud (LMC), focusing on the lifecycle of molecular clouds. We use a statistical method to determine a molecular cloud lifetime in the LMC of $t_{\text{CO}}=11.8^{+2.7}_{-2.2}$ Myr. This short time-scale is similar to the cloud dynamical time, and suggests that molecular clouds in the LMC are largely decoupled from the effects of galactic dynamics and have lifetimes set by internal processes. This provides a clear contrast to atomic clouds in the LMC, of which the lifetimes are correlated with galactic dynamical time-scales. We additionally derive the time-scale for which molecular clouds and HII regions co-exist as $t_{\text{fb}}=1.2^{+0.3}_{-0.2}$ Myr, implying an average feedback front expansion velocity of 12 km s$^{-1}$, consistent with expansion velocities of HII regions in the LMC observed directly using optical spectroscopy. Taken together, these results imply that the molecular cloud lifecycle in the LMC proceeds rapidly and is regulated by internal dynamics and stellar feedback. We conclude by discussing our measurements in the context of previous work in the literature, which reported considerably longer lifetimes for molecular clouds in the LMC, and find that these previous findings resulted from a subjective choice in timeline calibration that is avoided by our statistical methodology.
description: 18 pages (including appendices), 10 figures, 2 tables; MNRAS in press (accepted August 15, 2022). Figures 3, 4, 5, and 7 show the main results of the paper
Dimer-monomer Model on the Towers of Hanoi Graphs
Creators: name: Chen, Hanlin
name: Wu, Renfang
name: Huang, Guihua
name: Deng, Hanyuan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The number of dimer-monomers (matchings) of a graph $G$ is an important graph parameter in statistical physics. Following recent research, we study the asymptotic behavior of the number of dimer-monomers $m(G)$ on the Towers of Hanoi graphs and another variation of the Sierpiński graphs which is similar to the Towers of Hanoi graphs, and derive the recursion relations for the numbers of dimer-monomers. Upper and lower bounds for the entropy per site, defined as $μ_{G}=\lim_{v(G)\rightarrow\infty}\frac{\ln m(G)}{v(G)}$, where $v(G)$ is the number of vertices in a graph $G$, on these Sierpiński graphs are derived in terms of the numbers at a certain stage. As the difference between these bounds converges quickly to zero as the calculated stage increases, the numerical value of the entropy can be evaluated with more than a hundred significant figures accuracy.
The influence of host star activity evolution on the population of super-Earths and mini-Neptunes
Creators: name: Ketzer, Laura
name: Poppenhaeger, Katja
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The detected exoplanet population displays a dearth of planets with sizes of about two Earth radii, the so-called radius gap. This is interpreted as an evolutionary effect driven by a variety of possible atmospheric mass loss processes of exoplanets. For mass loss driven by an exoplanet's irradiation by stellar X-ray and extreme-UV photons, the time evolution of the stellar magnetic activity is important. It is known from observations of open stellar clusters that stars of the same age and mass do not all follow the same time evolution of activity-induced X-ray and extreme-UV luminosities. Here we explore how a realistic spread of different stellar activity tracks influences the mass loss and radius evolution of a simulated population of small exoplanets and the observable properties of the radius gap. Our results show qualitatively that different saturation time scales, i.e. the young age at which stellar high-energy emission starts to decline, and different activity decay tracks over moderate stellar ages can cause changes in the population density of planets in the gap, as well as in the observable width of the gap. We also find that while the first 100 million years of mass loss are highly important to shape the radius gap, significant evolution of the gap properties is expected to take place for at least the first 500-600 million years, i.e. the age of the Hyades cluster. Observations of exoplanet populations with defined ages will be able to shed more light on the radius gap evolution.
description: 26 pages. Accepted for publication in MNRAS
Better Predict the Dynamic of Geometry of In-Pit Stockpiles Using Geospatial Data and Polygon Models
Creators: name: Balamurali, Mehala.
name: Seiler, Konstantin M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Modelling stockpile is a key factor of a project economic and operation in mining, because not all the mined ores are not able to mill for many reasons. Further, the financial value of the ore in the stockpile needs to be reflected on the balance sheet. Therefore, automatically tracking the frontiers of the stockpile facilitates the mine scheduling engineers to calculate the tonnage of the ore remaining in the stockpile. This paper suggests how the dynamic of stockpile shape changes caused by dumping and reclaiming operations can be inferred using polygon models. The presented work also demonstrates how the geometry of stockpiles can be inferred in the absence of reclaimed bucket information, in which case the reclaim polygons are established using the diggers GPS positional data at the time of truck loading. This work further compares two polygon models for creating 2D shapes.
Effect of Antenatal Corticosteroids on Respiratory Morbidity in Singletons After Late-Preterm Birth
Creators: name: Mercer, Brian M.
name: Spong, Catherine Y.
name: Landon, Mark B.
name: Rouse, Dwight J.
name: Meis, Paul J.
name: Gyamfi-Bannerman, Cynthia
name: Ramin, Susan M.
name: OʼSullivan, Mary J.
name: Peaceman, Alan M.
name: Sibai, Baha M.
name: Wapner, Ronald J.
name: Gilbert, Sharon
name: Thorp, John M.
name: Varner, Michael W.
name: Sorokin, Yoram
name: Carpenter, Marshall
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: To evaluate whether neonates born to women who had previously received antenatal corticosteroids and then delivered a late-preterm birth neonate had less respiratory morbidity compared with those unexposed to antenatal corticosteroids.
Effect of Vaginal Lubricants on Natural Fertility
Creators: name: Herring, Amy H.
name: Steiner, Anne Z.
name: Long, D. Leann
name: Tanner, Catherine
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Over-the-counter vaginal lubricants have been shown to negatively affect in vitro sperm motility. The objective of this study was to estimate the effect of vaginal lubricant use during procreative intercourse on natural fertility.
Orbital-driven nematicity in FeSe
Creators: name: Baek, S. -H.
name: Efremov, D. V.
name: Ok, J. M.
name: Kim, J. S.
name: Brink, Jeroen van den
name: Büchner, B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A very fundamental and unconventional characteristic of superconductivity in iron-based materials is that it occurs in the vicinity of {\it two} other instabilities. Apart from a tendency towards magnetic order, these Fe-based systems have a propensity for nematic ordering: a lowering of the rotational symmetry while time-reversal invariance is preserved. Setting the stage for superconductivity, it is heavily debated whether the nematic symmetry breaking is driven by lattice, orbital or spin degrees of freedom. Here we report a very clear splitting of NMR resonance lines in FeSe at $T_{nem}$ = 91K, far above superconducting $T_c$ of 9.3 K. The splitting occurs for magnetic fields perpendicular to the Fe-planes and has the temperature dependence of a Landau-type order-parameter. Spin-lattice relaxation rates are not affected at $T_{nem}$, which unequivocally establishes orbital degrees of freedom as driving the nematic order. We demonstrate that superconductivity competes with the emerging nematicity.
description: 4 figures; supplementary material is included; Final version, Nature Materials, advance online publication, 10 Nov 2014
Constructing differential equations using only a scalar time-series about continuous time chaotic dynamics
Creators: name: Tsutsumi, Natsuki
name: Nakai, Kengo
name: Saiki, Yoshitaka
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We propose a simple method of constructing a system of differential equations of chaotic behavior based on the regression only from a scalar observable time-series data. The estimated system enables us to reconstruct invariant sets and statistical properties as well as to infer short time-series. Our successful modeling relies on the introduction of a set of Gaussian radial basis functions to capture local structure. The proposed method is used to construct a system of ordinary differential equations whose orbit reconstructs a time-series of a variable of the well-known Lorenz system as a simple but typical example. A system for a macroscopic fluid variable is also constructed.
description: 8 pages, 15 figures
$μ$-diff: an open-source Matlab toolbox for computing multiple scattering problems by disks
Creators: name: Thierry, Bertrand
name: Antoine, Xavier
name: Chniti, Chokri
name: Alzubaidi, Hasan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences
subject: 35J05, 78A45, 78A48, 76Q05, 65M70, 31A10

description: The aim of this paper is to describe a Matlab toolbox, called $μ$-diff, for modeling and numerically solving two-dimensional complex multiple scattering by a large collection of circular cylinders. The approximation methods in $μ$-diff are based on the Fourier series expansions of the four basic integral operators arising in scattering theory. Based on these expressions, an efficient spectrally accurate finite-dimensional solution of multiple scattering problems can be simply obtained for complex media even when many scatterers are considered as well as large frequencies. The solution of the global linear system to solve can use either direct solvers or preconditioned iterative Krylov subspace solvers for block Toeplitz matrices. Based on this approach, this paper explains how the code is built and organized. Some complete numerical examples of applications (direct and inverse scattering) are provided to show that $μ$-diff is a flexible, efficient and robust toolbox for solving some complex multiple scattering problems.
description: 27 pages, 15 figures, associated code available online at http://mu-diff.math.cnrs.fr
Forced Eccentricity in Circumbinary Discs
Creators: name: Lubow, Stephen H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We analyze the eccentric response of a low mass coplanar circumbinary disc to secular tidal forcing by a Keplerian eccentric orbit central binary. The disc acquires a forced eccentricity whose magnitude depends on the properties of the binary and disc. The largest eccentricities occur when there is a global apsidal resonance in the disc. The driving frequency by the binary is its apsidal frequency that is equal to zero. A global resonance occurs when the disc properties permit the existence of a zero apsidal frequency free eccentric mode. Resonances occur for different free eccentric modes that differ in the number of radial nodes. For a disc not at resonance, the eccentricity distribution has somewhat similar form to the eccentricity distributions in discs at resonance that have the closest matching disc aspect ratios. For higher disc aspect ratios, the forced eccentricity distribution in a 2D disc is similar to that of the fundamental free mode. The forced eccentricity distribution in a 3D disc is similar to that of higher order free modes, not the fundamental mode, unless the disc is very cool. For parameters close to resonance, large phase shifts occur between the disc and binary eccentricities that are locked in phase. Forced eccentricity may play an important role in the evolution of circumbinary discs and their central binaries.
description: 8 pages, 7 figures, accepted for publication in MNRAS
SU(2) Lattice Gauge Theory- Local Dynamics on Non-intersecting Electric flux Loops
Creators: name: Anishetty, Ramesh
name: Raychowdhury, Indrakshi
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We use Schwinger Bosons as prepotentials for lattice gauge theory to define local linking oper- ators and calculate their action on linking states for 2 + 1 dimensional SU(2) lattice gauge theory. We develop a diagrammatic technique and associate a set of (lattice Feynman) rules to compute the entire loop dynamics diagrammatically. The physical loop space is shown to contain only non- intersecting loop configurations after solving the Mandelstam constraint. The smallest plaquette loops are contained in the physical loop space and other configurations are generated by the action of a set of fusion operators on this basic loop states enabling one to charaterize any arbitrary loop by the basic plaquette together with the fusion variables. Consequently, the full Kogut-Susskind Hamiltonian and the dynamics of all possible non-intersecting physical loops are formulated in terms of these fusion variables.
description: Appendix added in new version, Accepted for publication in Phys. Rev D. (37 pages, 20 figures)
Impact of subsurface convective flows on the formation of sunspot magnetic field and energy build-up
Creators: name: Kaneko, Takafumi
name: Hotta, Hideyuki
name: Toriumi, Shin
name: Kusano, Kanya
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Strong solar flares occur in $δ$-spots characterized by the opposite-polarity magnetic fluxes in a single penumbra. Sunspot formation via flux emergence from the convection zone to the photosphere can be strongly affected by convective turbulent flows. It has not yet been shown how crucial convective flows are for the formation of $δ$-spots. The aim of this study is to reveal the impact of convective flows in the convection zone on the formation and evolution of sunspot magnetic fields. We simulated the emergence and transport of magnetic flux tubes in the convection zone using radiative magnetohydrodynamics code R2D2. We carried out 93 simulations by allocating the twisted flux tubes to different positions in the convection zone. As a result, both $δ$-type and $β$-type magnetic distributions were reproduced only by the differences in the convective flows surrounding the flux tubes. The $δ$-spots were formed by the collision of positive and negative magnetic fluxes on the photosphere. The unipolar and bipolar rotations of the $δ$-spots were driven by magnetic twist and writhe, transporting magnetic helicity from the convection zone to the corona. We detected a strong correlation between the distribution of the nonpotential magnetic field in the photosphere and the position of the downflow plume in the convection zone. The correlation could be detected $20$-$30$ h before the flux emergence. The results suggest that high free energy regions in the photosphere can be predicted even before the magnetic flux appears in the photosphere by detecting the downflow profile in the convection zone.
description: 13 pages, 21 figures, accepted for publication in MNRAS
Excessive Early Gestational Weight Gain and Risk of Gestational Diabetes Mellitus in Nulliparous Women
Creators: name: Myatt, Leslie
name: Carreno, Carlos A.
name: Spong, Catherine Y.
name: Varner, Michael W.
name: Sorokin, Yoram
name: Carpenter, Marshall W.
name: Clifton, Rebecca G.
name: Mercer, Brian M.
name: Tolosa, Jorge E.
name: Hauth, John C.
name: Thorp, John M.
name: Roberts, James M.
name: Sciscione, Anthony
name: Ramin, Susan M.
name: Peaceman, Alan M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: To estimate whether there is an association between excessive early gestational weight gain and the development of gestational diabetes mellitus (GDM) and excessive fetal growth.
The ground-based H, K, and L-band absolute emission spectra of HD 209458b
Creators: name: Zellem, Robert T.
name: Griffith, Caitlin A.
name: Deroo, Pieter
name: Swain, Mark R.
name: Waldmann, Ingo P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Here we explore the capabilities of NASA's 3.0 meter Infrared Telescope Facility (IRTF) and SpeX spectrometer and the 5.08 meter Hale telescope with the TripleSpec spectrometer with near-infrared H, K, and L-band measurements of HD 209458b's secondary eclipse. Our IRTF/SpeX data are the first absolute L-band spectroscopic emission measurements of any exoplanet other than the hot Jupiter HD 189733b. Previous measurements of HD 189733b's L-band indicate bright emission hypothesized to result from non-LTE CH$_{4}$ $ν_{3}$ fluorescence. We do not detect a similar bright 3.3 $μ$m feature to ~3$σ$, suggesting that fluorescence does not need to be invoked to explain HD 209458b's L-band measurements. The validity of our observation and reduction techniques, which decrease the flux variance by up to 2.8 orders of magnitude, is reinforced by 1$σ$ agreement with existent $Hubble$/NICMOS and $Spitzer$/IRAC1 observations which overlap the H, K, and L-bands, suggesting that both IRTF/SpeX and Palomar/TripleSpec can measure an exoplanet's emission with high precision.
description: 10 pages, 12 figures, 4 tables, accepted to ApJ, Table 4 is published in its entirety in the electronic edition of ApJ