cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonlinear quantum optical properties of graphene: the role of chirality and symmetry
Creators: name: Semnani, Behrooz
name: Majedi, Amir Hamed
name: Safavi-Naeini, Safieddin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a semiclassical theory of linear and nonlinear optical response of graphene. The emphasis is placed on the nonlinear optical response of graphene from the standpoint of the underlying chiral symmetry. The Bloch quasiparticles in low energy limit, around the degeneracy points are dominantly chiral. It is shown for the first time that this chiral behavior in conjunction with scale invariance in graphene around the Dirac points results in the strong nonlinear optical response. Explicit expressions for the linear and nonlinear conductivity tensors are derived based on Semiconductor Bloch Equations (SBEs). The linear terms agree with the result of Kubo formulation. The three main additive mechanisms contribute in the nonlinear optical response of graphene: pure intraband, pure interband and the interplay between them. For each contribution, an explicit response function is derived. The Kerr-type nonlinearity of graphene is then studied and it is demonstrated that its Kerr nonlinear coefficient is several orders of magnitude higher than that of many other known semiconductors. In addition, the nonlinear refractive index of graphene can also be tuned and enhanced by applying a gate voltage.
description: 14 pages
Zodiacal exoplanets in time – X. The orbit and atmosphere of the young ‘neptune desert’-dwelling planet K2-100b
Creators: name: Gaidos, E.
name: Kudo, T.
name: Ishizuka, M.
name: Kotani, T.
name: Tamura, M.
name: Hirano, T.
name: Vanderburg, A.
name: Kurokawa, T.
name: Ueda, A.
name: Jacobson, S.
name: Mann, A.W.
name: Berger, T.A.
name: Serizawa, T.
name: Harakawa, H.
name: France, K.
name: Kuzuhara, M.
name: Nishikawa, J.
name: Konishi, M.
name: Hodapp, K.W.
name: Omiya, M.
name: Owens, D.A.
Publisher: name: Oxford University Press
Year: 2020

description: We obtained high-resolution infrared spectroscopy and short-cadence photometry of the 600–800 Myr Praesepe star K2-100 during transits of its 1.67-d planet. This Neptune-size object, discovered by the NASA K2 mission, is an interloper in the ‘desert’ of planets with similar radii on short-period orbits. Our observations can be used to understand its origin and evolution by constraining the orbital eccentricity by transit fitting, measuring the spin-orbit obliquity by the Rossiter–McLaughlin effect, and detecting any extended, escaping the hydrogen–helium envelope with the 10 830 -Å line of neutral helium in the 2s3S triplet state. Transit photometry with 1-min cadence was obtained by the K2 satellite during Campaign 18 and transit spectra were obtained with the IRD spectrograph on the Subaru telescope. While the elevated activity of K2-100 prevented us from detecting the Rossiter–McLaughlin effect, the new photometry combined with revised stellar parameters allowed us to constrain the eccentricity to e < 0.15/0.28 with 90/99 per cent confidence. We modelled atmospheric escape as an isothermal, spherically symmetric Parker wind, with photochemistry driven by ultraviolet radiation, which we estimate by combining the observed spectrum of the active Sun with calibrations from observations of K2-100 and similar young stars in the nearby Hyades cluster. Our non-detection (<5.7 m Å) of a transit-associated He I line limits mass-loss of a solar-composition atmosphere through a T ≤ 10000 K wind to <0.3 M Gyr−1. Either K2-100b is an exceptional desert-dwelling planet, or its mass-loss is occurring at a lower rate over a longer interval, consistent with a core accretion-powered scenario for escape.
The Rationale for using confidence intervals to conduct MET from Null regions: a unified conceptual framework for statistical inference
Creators: name: Smiley, Adam H.
name: Glazier, Jessica J.
name: Shoda, Yuichi
Publisher: name: The Royal Society
Year: 2023
Subjects: Statistics not elsewhere classified

description: Ruling out that there is absolutely no effect or association between variables may be a good first step, but it is rarely the ultimate goal of science. Yet that is the only inference provided by traditional null hypothesis significance testing (NHST), which has been a mainstay of many scientific fields. Reliance on NHST also makes it difficult to define what it means to replicate a finding, and leads to an uncomfortable quandary in which increasing precision in research reduces researchers' ability to perform theory falsification. To solve these problems, in recent years several alternatives to traditional NHST have been proposed. Yet few researchers are familiar with these alternatives because each new test is described using its own terminology and practiced in different fields. We describe a simple, unified framework for conceptualizing all these tests so that it is not necessary to learn them separately. Moreover, the framework allows researchers to conduct any of these tests by asking just one question: is the confidence interval entirely outside the null region(s)? This framework may also help researchers choose the test(s) that best answers their research question when simply ruling out ‘no effect at all’ is not enough.
AGN variability and QPEs: current results and future prospects for Athena
Creators: name: Giustini, Margherita
Publisher: name: Zenodo
Year: 2022

description: Since their discovery, quasi-periodic eruptions (QPEs) have not stopped surprising astronomers. Discovered serendipitously in the nucleus of the galaxy GSN 069 at the end of 2018, QPEs have been observed so far in four other galaxies, some of these active, and all of low-mass and with connections to tidal disruption events (TDEs). QPEs are sudden and intense flares of soft X-rays, lasting about an hour, and repeating quasiperiodically every few hours. They manifest themselves as thermal emission with a temperature kT ∼ 100 − 250 eV, much warmer than the temperature measured in quiescence. The quiescent X-ray spectrum of the QPE host galaxies is super-soft, generally well described by an accretion disk with kT ∼ 40 − 70 eV, and weak or absent hard X-ray power-law emission. With each flare, QPEs carry a 0.3 − 2 keV luminosity of about 1042−1043 erg s−1 . The time scales and the amount of energy emitted imply phenomena associated with super massive black holes (SMBHs), but the physical scenarios capable of interpreting the QPE observations are manifold. Among them, there are accretion flow instabilities, gravitational lensing of binary black holes, magnetic reconnection, and extreme mass ratio inspirals (EMRI). I will briefly recall the story of the discovery of QPEs, to present, then, the latest observational results and their implications for the theoretical interpretations. I will conclude with the expectations that we might have regarding observations during the next decade of these new cosmic phenomena lightning up the X-ray sky.
Reconstruction of Bremsstrahlung $γ$-rays Spectrum in Heavy Ion Reactions with Richardson-Lucy Algorithm
Creators: name: Xu, JunHuai
name: Qin, Yuhao
name: Qin, Zhi
name: Si, Dawei
name: Zhang, Boyuan
name: Wang, Yijie
name: Niu, Qinglin
name: Xu, Chang
name: Xiao, Zhigang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The high momentum tail (HMT) in the momentum distribution of nucleons above the Fermi surface has been regarded as an evidence of short-range correlations (SRCs) in atomic nuclei. It has been showcased recently that the $np$ Bremsstrahlung radiation in heavy ion reactions can be used to extract HMT information. The Richardson-Lucy (RL) algorithm is introduced to the reconstruction of the original Bremsstrahlung $γ$-ray energy spectrum from experimental measurements. By solving the inverse problem of the detector response to the $γ$-rays, the original energy spectrum of the Bremsstrahlung $γ$ in 25 MeV/u $^{86}$Kr + $^{124}$Sn has been reconstructed and compared to the isospin- and momentum-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) simulations. The analysis based on hypothesis test suggests the existence of the HMT of nucleons in nuclei, in accordance with the previous conclusions. With its effectiveness being demonstrated, it is feasible to apply the RL algorithm in future experiments of measuring the Bremsstrahlung $γ$-rays in heavy ion reactions.
Pelatihan Peningkatan Metodologi Mengajar Bagi Anggota AISI Kota Makassar
Creators: name: Hamson, Zulkarnain
name: Nurdin, Nani Harlinda
Publisher: name: figshare
Year: 2019
Subjects: subject: 200202 Asian Cultural Studies
subject: FOS: Other humanities
subject: 200101 Communication Studies
subject: FOS: Media and communications

description: AISI menjadi organisasi instruktur yang terus memperbarui integritas anggotanya
Peer-Review of null regions from Null regions: a unified conceptual framework for statistical inference
Creators: name: Smiley, Adam H.
name: Glazier, Jessica J.
name: Shoda, Yuichi
Publisher: name: The Royal Society
Year: 2023
Subjects: Statistics not elsewhere classified

description: Ruling out that there is absolutely no effect or association between variables may be a good first step, but it is rarely the ultimate goal of science. Yet that is the only inference provided by traditional null hypothesis significance testing (NHST), which has been a mainstay of many scientific fields. Reliance on NHST also makes it difficult to define what it means to replicate a finding, and leads to an uncomfortable quandary in which increasing precision in research reduces researchers' ability to perform theory falsification. To solve these problems, in recent years several alternatives to traditional NHST have been proposed. Yet few researchers are familiar with these alternatives because each new test is described using its own terminology and practiced in different fields. We describe a simple, unified framework for conceptualizing all these tests so that it is not necessary to learn them separately. Moreover, the framework allows researchers to conduct any of these tests by asking just one question: is the confidence interval entirely outside the null region(s)? This framework may also help researchers choose the test(s) that best answers their research question when simply ruling out ‘no effect at all’ is not enough.
Synthesis and Characterisation of Electrochemically-derived Graphene Oxide
Creators: name: PEI YU
Publisher: name: Monash University
Year: 2019
Subjects: subject: 91299 Materials Engineering not elsewhere classified
subject: FOS: Materials engineering
subject: 30301 Chemical Characterisation of Materials
subject: FOS: Chemical sciences

description: This thesis has focused on the investigation of electrochemically-derived graphene oxide (EGO) with a comprehensive study of its synthesis, characterisation of structure, chemistry, and properties. This work presents the development of a new, scalable approach for the synthesis of graphene oxide by electrochemical oxidation method, and the investigation of how aqueous dispersible EGO could be produced with optimized electrochemical conditions. It also seeks to understand the properties of EGO including aqueous dispersibility, microwave reduction ability, stability and ionic sieving properties of EGO-based multilayer membranes compared with chemically-derived graphene oxide (CGO).
Kantowski-Sachs Universes sourced by a Skyrme fluid
Creators: name: Parisi, Luca
name: Radicella, Ninfa
name: Vilasi, Gaetano
Publisher: name: arXiv
Year: 2014
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: The Kantowski-Sachs cosmological model sourced by a Skyrme field and a cosmological constant is considered in the framework of General Relativity. Assuming a constant radial profile function for the hedgehog ansatz, the Skyrme contribution to Einstein equations is shown to be equivalent to an anisotropic fluid. Using dynamical system techniques, a qualitative analysis of the cosmological equations is presented. Physically interesting features of the model such as isotropization, bounce and recollapse are discussed.
description: 9 pages, 7 figures, 3 tables; v2 Sec. II extended, typos corrected. Matches the published version
Synthesis and biological effects of 2'-fluoro-5-ethyl-1-beta-D-arabinofuranosyluracil.
Creators: name: Chou, T C
name: Cheng, Y C
name: Watanabe, K A
name: Fanucchi, M P
name: Fox, J J
name: Kong, X B
name: Takahashi, K
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1987

description: 2'-Fluoro-5-ethyl-1-beta-D-arabinofuranosyluracil (FEAU) was synthesized, and its biological activities were compared with those of 2'-fluoro-5-methyl-1-beta-D-arabinofuranosyluracil (FMAU). Earlier studies indicated that both compounds showed potent anti-herpes simplex virus activity, with a 50% effective dose (ED50) of less than 0.25 microM. In the present study the cell growth inhibitory activity of FEAU (ED50, 200 to 2,060 microM) was found to be about 100-fold less than that of FMAU. With an ED50 ranging from 630 to 3,700 microM, FEAU only weakly inhibited thymidine incorporation into DNA, as compared with FMAU with an ED50 of 9 to 28 microM. Following exposure to [2-14C]FEAU (100 microM), 0.48 pmol/10(6) cells per h was incorporated into the DNA of herpes simplex virus type 1-infected Vero cells, whereas no detectable incorporation was found in uninfected Vero cells or L1210 cells. The Ki of FEAU for thymidine kinase purified from human leukemic cells was greater than 150 microM. For herpes simplex virus type 1- and 2-encoded thymidine kinases, the Kis were 0.6 and 0.74 microM, respectively. Both FEAU and FMAU were relatively nontoxic for mice, with a 50% lethal dose of greater than 800 mg/kg per day (four intraperitoneal doses). However, the lethal dose of FEAU for dogs was 100 mg/kg per day (10 intravenous doses), a dose which is 40- to 80-fold greater than the toxic dose of FMAU. These results suggest that FEAU is a worthy candidate for further development as an antiherpetic agent.
Decoupling elasticity and electrical conductivity of carbon black gels filled with insulating non-Brownian grains
Creators: name: Larsen, Thomas
name: Royer, John R.
name: Laidlaw, Fraser H. J.
name: Poon, Wilson C. K.
name: Larsen, Tom
name: Andreasen, Søren J.
name: Christiansen, Jesper de C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A unique bistable transition has been identified in granular/colloidal gel-composites, resulting from shear-induced phase separation of the gel phase into dense blobs. In energy applications, it is critical to understand how this transition influences electrical performance. Mixing conductive colloids with conductive inclusions, we find the conductivity and elasticity move in concert, both decreasing in the collapsed phase-separated state. Surprisingly, with insulating inclusions these properties can become decoupled, with the conductivity instead increasing despite the collapse of the gel structure.
Flexible and Ultrasoft Inorganic 1D Semiconductor and Heterostructure Systems Based on SnIP
Creators: name: Kumar, Pawan
Publisher: name: figshare
Year: 2019
Subjects: subject: 30601 Catalysis and Mechanisms of Reactions
subject: FOS: Chemical sciences
subject: 30301 Chemical Characterisation of Materials
subject: Inorganic Chemistry
subject: 30604 Electrochemistry
subject: 39999 Chemical Sciences not elsewhere classified

description: Low dimensionality and high flexibility are key demands for flexible electronic semiconductor devices. SnIP, the first atomic‐scale double helical semiconductor combines structural anisotropy and robustness with exceptional electronic properties. The benefit of the double helix, combined with a diverse structure on the nanoscale, ranging from strong covalent bonding to weak van der Waals interactions, and the large structure and property anisotropy offer substantial potential for applications in energy conversion and water splitting. It represents the next logical step in downscaling the inorganic semiconductors from classical 3D systems, via 2D semiconductors like MXenes or transition metal dichalcogenides, to the first downsizeable, polymer‐like atomic‐scale 1D semiconductor SnIP. SnIP shows intriguing mechanical properties featuring a bulk modulus three times lower than any IV, III‐V, or II‐VI semiconductor. In situ bending tests substantiate that pure SnIP fibers can be bent without an effect on their bonding properties. Organic and inorganic hybrids are prepared illustrating that SnIP is a candidate to fabricate flexible 1D composites for energy conversion and water splitting applications. SnIP@C3N4 hybrid forms an unusual soft material core–shell topology with graphenic carbon nitride wrapping around SnIP. A 1D van der Waals heterostructure is formed capable of performing effective water splitting.
title: Visualization of the two-phase flow in the air gap of an optically accessible generic electric motor and its effect on torque
Creators: name: Auernhammer, A.
name: Schary, S.
name: Dreizler, A.
name: Böhm, B.
Publisher: name: Springer
Year: 2025

description: Electric motors with high-power densities are required for the implementation of electromobility. To achieve this, direct liquid cooling methods are increasingly being considered, in which oil is injected into the motor compartment. This results in a two-phase flow that can be used for efficient cooling. However, the oil, which can also penetrate the air gap between the rotor and stator, can also lead to additional losses due to increased friction. Since little is known about the two-phase flow in such systems, especially in the air gap, it is investigated by means of simple optical visualizations and high-speed laser-induced fluorescence imaging as well as torque measurements. The measurements are carried out in the air gap of an optically accessible generic model of a directly cooled electric motor. Speed variations were performed from 100 to 2000 rpm, and three different two-phase flow regimes were observed. At low speeds (Flow Regime 1), the air gap is filled locally with oil in radial direction, in the medium speed range (Flow Regime 2) with foam, while at high speeds (Flow Regime 3) separated films were observed on the rotor and stator. The torque difference between the two-phase and single-phase operation, which quantifies the mechanical losses due to the injected oil, increased continuously due to the oil in the air gap until it reached a maximum in Flow Regime 2 due to foam formation. In Flow Regime 3, the torque difference was negative. This was attributed to the fact that the grooves in the stator were filled with oil, thus reducing the turbulence generation of the air flow.
Anti-human immunodeficiency virus agent 3'-azido-3'-deoxythymidine inhibits replication of Epstein-Barr virus.
Creators: name: Biron, K
name: Zhang, Z X
name: Smith, M C
name: Pagano, J S
name: Lin, J C
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: We show that the anti-human immunodeficiency virus agent, 3'-azido-3'-deoxythymidine (AZT), which suppresses infectivity and cytopathic effects of human immunodeficiency virus, also effectively inhibits Epstein-Barr virus (EBV) DNA replication. However, AZT has no effect on four other human herpesviruses: cytomegalovirus, varicella-zoster virus, and herpes simplex virus types 1 and 2. The combination of acyclovir and AZT, while it is not synergistic, has an additive effect against EBV replication. AZT may prove to be a useful drug for treatment of coinfections with human immunodeficiency virus and EBV.
Jacobi-Lie systems: Fundamentals and low-dimensional classification
Creators: name: Herranz, F. J.
name: de Lucas, J.
name: Sardon, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34A26, 53B50

description: A Lie system is a system of differential equations describing the integral curves of a $t$-dependent vector field taking values in a finite-dimensional real Lie algebra of vector fields, a Vessiot-Guldberg Lie algebra. We define and analyze Lie systems possessing a Vessiot-Guldberg Lie algebra of Hamiltonian vector fields relative to a Jacobi manifold, the hereafter called Jacobi-Lie systems. We classify Jacobi-Lie systems on $\mathbb{R}$ and $\mathbb{R}^2$. Our results shall be illustrated through examples of physical and mathematical interest.
description: 15 pages. Examples, references and comments added. Based on the contribution presented at "The 10th AIMS Conference on Dynamical Systems, Differential Equations and Applications", July 07-11, 2014, Madrid, Spain. To appear in the Proceedings of the 10th AIMS Conference
Comparison of two bromovinyl nucleoside analogs, 1-beta-D-arabinofuranosyl-E-5-(2-bromovinyl)uracil and E-5-(2-bromovinyl)-2'-deoxyuridine, with acyclovir in inhibition of Epstein-Barr virus replication.
Creators: name: Lin, J C
name: Machida, H
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: The effect of 1-beta-D-arabinofuranosyl-E-5-(2-bromovinyl)uracil (BV-araU), a new antiviral drug, on Epstein-Barr virus (EBV) was studied and compared with those of E-5-(2-bromovinyl)-2'-deoxyuridine (BVdU) and acyclovir (ACV). BV-araU effectively inhibited EBV replication both in superinfected Raji cells and in virus producer P3HR-1(LS) cells, as determined by density gradient centrifugation, in situ cytohybridization with an EBV DNA probe, and cRNA-DNA hybridization. The 50% effective doses for viral DNA replication were 0.26, 0.06, and 0.3 microM for BV-araU, BVdU, and ACV, respectively. The relative efficacy on the basis of the in vitro therapeutic index was BVdU (6,500) greater than BV-araU (1,500) greater than ACV (850). Synthesis of EBV-induced polypeptides with molecular weights of 145,000 and 140,000 was inhibited by these drugs. Kinetic analysis of reversibility of inhibition of EBV DNA replication after removal of the drugs indicated that BV-araU, like BVdU, has a more prolonged inhibitory effect than ACV. These results indicate that the 2' OH group in the arabinosyl configuration of BV-araU results in marked reduction in anti-EBV activity while slightly diminishing cytotoxicity.
Untitled Item
Creators: name: Kumar, Pawan
Publisher: name: figshare
Year: 2019
Subjects: subject: 30601 Catalysis and Mechanisms of Reactions
subject: FOS: Chemical sciences
subject: 30301 Chemical Characterisation of Materials
subject: Inorganic Chemistry
subject: 30604 Electrochemistry
subject: 39999 Chemical Sciences not elsewhere classified

description: Low dimensionality and high flexibility are key demands for flexible electronic semiconductor devices. SnIP, the first atomic‐scale double helical semiconductor combines structural anisotropy and robustness with exceptional electronic properties. The benefit of the double helix, combined with a diverse structure on the nanoscale, ranging from strong covalent bonding to weak van der Waals interactions, and the large structure and property anisotropy offer substantial potential for applications in energy conversion and water splitting. It represents the next logical step in downscaling the inorganic semiconductors from classical 3D systems, via 2D semiconductors like MXenes or transition metal dichalcogenides, to the first downsizeable, polymer‐like atomic‐scale 1D semiconductor SnIP. SnIP shows intriguing mechanical properties featuring a bulk modulus three times lower than any IV, III‐V, or II‐VI semiconductor. In situ bending tests substantiate that pure SnIP fibers can be bent without an effect on their bonding properties. Organic and inorganic hybrids are prepared illustrating that SnIP is a candidate to fabricate flexible 1D composites for energy conversion and water splitting applications. SnIP@C3N4 hybrid forms an unusual soft material core–shell topology with graphenic carbon nitride wrapping around SnIP. A 1D van der Waals heterostructure is formed capable of performing effective water splitting.
title: Prototype of an Automatic Registration System for the Remains of Archaeological Sites
Creators: name: Ruiz, José Luis López
name: Alvarado, Lidia Ortega
name: Higueruela, Francisco Ramón Feito
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Geographic visualization archaeology
Geographic information system
Augmented reality
Virtual reality
Image recognition

description: Data acquisition in archaeological excavations is a time consuming task developed on site that must be completed later with the information stored in the database. In this paper, we introduce the work in progress for the automatic data acquisition and record of artifacts on the archaeological site. The shape of the object is recognized automatically and converted to vectorial format. Then, if this contour is recognized as object of interest, the initial shape and specific position is registered and inserted in a spatial database. In this process, some techniques associated to Augmented Reality and boundary detection are used.
description: Spanish Computer Graphics Conference (CEIG)
description: Short Papers
description: 93
description: 96
description: José Luis López Ruiz, Lidia Ortega Alvarado, and Francisco Ramón Feito Higueruela
description: Keywords: Geographic visualization archaeology , Geographic information system, Augmented reality, Virtual reality, Image recognition
Very regular high-frequency pulsation modes in young intermediate-mass stars
Creators: name: Li, Y.
name: Brown, T.M.
name: Chaplin, W.J.
name: Isaacson, H.
name: Huber, D.
name: Reese, D.R.
name: White, T.R.
name: Rabus, M.
name: Hermes, J.J.
name: Sekaran, S.
name: Harbeck, D.R.
name: Murphy, S.J.
name: Tinney, C.G.
name: Holdsworth, D.L.
name: McCully, C.
name: Mann, A.W.
name: Vanderspek, R.K.
name: Stello, D.
name: Jenkins, J.M.
name: Gaidos, E.
name: Ball, W.H.
name: Ireland, M.J.
name: Hey, D.R.
name: Ricker, G.R.
name: Fuller, J.
name: Kjeldsen, H.
name: Antoci, V.
name: Smalley, B.
name: Rains, A.D.
name: Bedding, T.R.
name: Colman, I.L.
name: Howard, A.W.
name: Yu, J.
name: Bergmann, C.
name: Li, G.
name: Li, T.
Publisher: name: Nature Research
Year: 2020

description: Asteroseismology probes the internal structures of stars by using their natural pulsation frequencies1. It relies on identifying sequences of pulsation modes that can be compared with theoretical models, which has been done successfully for many classes of pulsators, including low-mass solar-type stars2, red giants3, high-mass stars4 and white dwarfs5. However, a large group of pulsating stars of intermediate mass—the so-called δ Scuti stars—have rich pulsation spectra for which systematic mode identification has not hitherto been possible6,7. This arises because only a seemingly random subset of possible modes are excited and because rapid rotation tends to spoil regular patterns8–10. Here we report the detection of remarkably regular sequences of high-frequency pulsation modes in 60 intermediate-mass main-sequence stars, which enables definitive mode identification. The space motions of some of these stars indicate that they are members of known associations of young stars, as confirmed by modelling of their pulsation spectra.
Spherical Domain Wall Collapse in a Dust Universe
Creators: name: Tanahashi, Norihiro
name: Yoo, Chul-Moon
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: To clarify observational consequence of bubble nucleations in inflationary era, we analyse dynamics of a spherical domain wall in an expanding universe. We consider a spherical shell of the domain wall with tension $σ$ collapsing in a spherically-symmetric dust universe, which is initially separated into the open Friedmann-Lemaître-Robertson-Walker universe inside the shell and the Einstein-de Sitter universe outside. The domain wall shell collapses due to the tension, and sweeps the dust fluid. The universe after the collapse becomes inhomogeneous and is described by the Lemaître-Tolman-Bondi model. We construct solutions describing this inhomogeneous universe by solving dynamical equations obtained from Israel's junction conditions applied to this system. We find that a black hole forms after the domain wall collapse for any initial condition, and that the black hole mass at the moment of its formation is universally given by $M_{\rm BH}\simeq 17 σ/H_{\rm hc}$, where $H_{\rm hc}$ is the Hubble parameter at the time when the shell radius becomes equal to the Hubble radius. We also find that the dust fluid is distributed as $ρ\propto R^{3/2}$ near the central region after the collapse, where $R$ is the area radius. These features would provide observable signatures of a spherical domain wall generated in the early universe.
description: 26 pages, 9 figures, estimate of black hole mass is corrected
Voters Perception on Gender Equity in Public Elections in Makassar City, Indonesia
Creators: name: Hamson, Zulkarnain
Publisher: name: figshare
Year: 2020
Subjects: subject: 169901 Gender Specific Studies
subject: FOS: Sociology
subject: 160609 Political Theory and Political Philosophy
subject: FOS: Political science

description: Voters Perception on Gender Equity in Public Elections in Makassar City, Indonesia
Examples of reporting the results of the tests described in this article from Null regions: a unified conceptual framework for statistical inference
Creators: name: Smiley, Adam H.
name: Glazier, Jessica J.
name: Shoda, Yuichi
Publisher: name: The Royal Society
Year: 2023
Subjects: Statistics not elsewhere classified

description: Ruling out that there is absolutely no effect or association between variables may be a good first step, but it is rarely the ultimate goal of science. Yet that is the only inference provided by traditional null hypothesis significance testing (NHST), which has been a mainstay of many scientific fields. Reliance on NHST also makes it difficult to define what it means to replicate a finding, and leads to an uncomfortable quandary in which increasing precision in research reduces researchers' ability to perform theory falsification. To solve these problems, in recent years several alternatives to traditional NHST have been proposed. Yet few researchers are familiar with these alternatives because each new test is described using its own terminology and practiced in different fields. We describe a simple, unified framework for conceptualizing all these tests so that it is not necessary to learn them separately. Moreover, the framework allows researchers to conduct any of these tests by asking just one question: is the confidence interval entirely outside the null region(s)? This framework may also help researchers choose the test(s) that best answers their research question when simply ruling out ‘no effect at all’ is not enough.
In vitro assay to demonstrate high-level erythromycin resistance of a clinical isolate of Treponema pallidum.
Creators: name: Stapleton, J T
name: Stamm, L V
name: Bassford, P J
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: We have previously demonstrated that cells of Treponema pallidum freshly extracted from infected rabbit testes can be intrinsically radiolabeled with [35 S]methionine to very high specific activities. In this study we used the inhibition of [35 S]methionine incorporation into trichloroacetic acid-precipitable protein in vitro as an assay to test the susceptibilities of three different pathogenic treponemal strains to various antibiotics. In general, the results correlated very well with the known efficacies of these antibiotics in treating human patients with syphilis. One of the strains tested, however, a clinical isolate of T. pallidum designated street strain 14, was found to exhibit high-level resistance to erythromycin and a closely related macrolide, roxithromycin (RU 965). Street strain 14 was originally isolated from a human patient with active secondary syphilis who failed to respond to erythromycin therapy. Thus, our results indicate that an erythromycin-resistant strain of T. pallidum can be responsible for erythromycin treatment failure. In addition, street strain 14 treponemes were found to be generally less susceptible by this assay to a variety of antibiotics than were treponemes of the T. pallidum Nichols strain. These findings suggest that the outer envelope of street strain 14 treponemes may be generally less permeable to antibiotics than is that of Nichols strain treponemes.
Anti-herpes simplex virus activity of 5-substituted 2-pyrimidinone nucleosides.
Creators: name: Bardos, T J
name: Efange, S M
name: Dutschman, G E
name: Lewandowski, G A
name: Fisher, M H
name: Cheng, Y C
name: Grill, S P
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: Several 5-substituted 2-pyrimidinone 2'-deoxyribonucleoside (PdR) analogs were examined for their anti-herpes simplex virus (HSV) activity in cell culture. The order of potency of their antiviral activities against HSV type 1 (HSV-1) and HSV-2 was iodo PdR approximately ethynyl PdR approximately propynyl PdR. The antiviral action of iodo PdR is dependent on the ability of HSV to induce virus-specified thymidine kinase in infected cells. Several HSV-1 variants with altered thymidine kinase changed their sensitivity to iodo PdR, whereas HSV-1 variants with altered DNA polymerase were as sensitive as the parental virus to iodo PdR. Continuous presence of iodo PdR for more than one virus replication cycle was required for optimal antiviral activity. Iodo PdR (100 microM) had no activity against Epstein-Barr virus DNA replication in P3HR-1 cells. With an oral, an intraperitoneal, or a subcutaneous route of injection, iodo PdR administered twice a day for 2.5 days could prevent the death of mice infected with HSV-2. This in vivo activity is unlikely to be related to the potential conversion of iodo PdR to iododeoxyuridine, since iodo PdR is not a substrate of xanthine oxidase.
Spectrally resolved spatiotemporal features of quantum paths in high-order harmonic generation
Creators: name: He, Lixin
name: Lan, Pengfei
name: Zhang, Qingbin
name: Zhai, Chunyang
name: Wang, Feng
name: Shi, Wenjing
name: Lu, Peixiang
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We experimentally disentangle the contributions of different quantum paths in high-order harmonic generation (HHG) from the spectrally and spatially resolved harmonic spectra. By adjusting the laser intensity and focusing position, we simultaneously observe the spectrum splitting, frequency shift and intensity-dependent modulation of harmonic yields both for the short and long paths. Based on the simulations, we discriminate the physical mechanisms of the intensity-dependent modulation of HHG due to the quantum path interference and macroscopic interference effects. Moreover, it is shown that the atomic dipole phases of different quantum paths are encoded in the frequency shift. In turn, it enables us to retrieve the atomic dipole phases and the temporal chirps of different quantum paths from the measured harmonic spectra. This result gives an informative mapping of spatiotemporal and spectral features of quantum paths in HHG.
description: 10 pages, 10 figures
Repulsive vs. attractive Hubbard model: transport properties and spin-lattice relaxation rate
Creators: name: Zitko, Rok
name: Osolin, Ziga
name: Jeglic, Peter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We contrast the transport properties (dc resistivity, Seebeck coefficient), optical conductivity, spectral functions, dynamical magnetic susceptibility, and the NMR $1/T_1$ spin-lattice relaxation rate of the repulsive and attractive infinite-dimensional Hubbard models in the paramagnetic phase for a generic band filling. The calculations are performed in a wide temperature interval using the dynamical mean-field theory with the numerical renormalization group as the impurity solver. The attractive case exhibits significantly more complex temperature dependences which can be explained by the behavior of the half-filled Hubbard model in external magnetic field with constant magnetization, to which the attractive Hubbard model maps through the partial particle-hole transformation. The resistivity is non-monotonous for strongly attractive case: it peaks significantly above the MIR value at a temperature $T_\mathrm{max}$ where the quasiparticle band disappears. For both signs of $U$ we find particle-hole asymmetry in the self-energy at low energies, but with the opposite kind of excitations having longer lifetime. This leads to a strong suppression of the slope of the Seebeck coefficient in the attractive case, rather than an enhancement as in the repulsive case. The spin-lattice relaxation rate in the strongly attractive case has a non-monotonic temperature dependence, thereby revealing the pairing fluctuations.
description: 19 pages, 20 figures. Final version
Susceptibility of human immunodeficiency virus type 1 replication in vitro to acyclic adenosine analogs and synergy of the analogs with 3'-azido-3'-deoxythymidine.
Creators: name: Smith, M S
name: Brian, E L
name: Pagano, J S
name: De Clercq, E
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1989

description: Certains dérivés acycliques de l'adénosine inhibent la réplication in vitro du virus HIV type 1 et leur combinaison avec la zidovudine produit un effet synergique.
Five measurement bases determine pure quantum states on any dimension
Creators: name: Goyeneche, D.
name: Cañas, G.
name: Etcheverry, S.
name: Gómez, E. S.
name: Xavier, G. B.
name: Lima, G.
name: Delgado, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A long standing problem in quantum mechanics is the minimum number of observables required for the characterisation of unknown pure quantum states. The solution to this problem is specially important for the developing field of high-dimensional quantum information processing. In this work we demonstrate that any pure d-dimensional state is unambiguously reconstructed by measuring 5 observables, that is, via projective measurements onto the states of 5 orthonormal bases. Thus, in our method the total number of different measurement outcomes (5d) scales linearly with d. The state reconstruction is robust against experimental errors and requires simple post-processing, regardless of d. We experimentally demonstrate the feasibility of our scheme through the reconstruction of 8-dimensional quantum states, encoded in the momentum of single photons.
description: Comments are very welcome
A Survey of Large Language Models for Graphs
Creators: name: Ren, Xubin
name: Tang, Jiabin
name: Yin, Dawei
name: Chawla, Nitesh
name: Huang, Chao
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Graphs are an essential data structure utilized to represent relationships in real-world scenarios. Prior research has established that Graph Neural Networks (GNNs) deliver impressive outcomes in graph-centric tasks, such as link prediction and node classification. Despite these advancements, challenges like data sparsity and limited generalization capabilities continue to persist. Recently, Large Language Models (LLMs) have gained attention in natural language processing. They excel in language comprehension and summarization. Integrating LLMs with graph learning techniques has attracted interest as a way to enhance performance in graph learning tasks. In this survey, we conduct an in-depth review of the latest state-of-the-art LLMs applied in graph learning and introduce a novel taxonomy to categorize existing methods based on their framework design. We detail four unique designs: i) GNNs as Prefix, ii) LLMs as Prefix, iii) LLMs-Graphs Integration, and iv) LLMs-Only, highlighting key methodologies within each category. We explore the strengths and limitations of each framework, and emphasize potential avenues for future research, including overcoming current integration challenges between LLMs and graph learning techniques, and venturing into new application areas. This survey aims to serve as a valuable resource for researchers and practitioners eager to leverage large language models in graph learning, and to inspire continued progress in this dynamic field. We consistently maintain the related open-source materials at \url{https://github.com/HKUDS/Awesome-LLM4Graph-Papers}.
description: Published as a KDD'24 survey paper
Numerical sub-gap spectroscopy of double quantum dots coupled to superconductors
Creators: name: Zitko, Rok
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Double quantum dot nanostructures embedded between two superconducting leads or in a superconducting ring have complex excitation spectra inside the gap which reveal the competition between different many-body phenomena. We study the corresponding two-impurity Anderson model using the non-perturbative numerical renormalization group (NRG) technique and identify the characteristic features in the spectral function in various parameter regimes. At half-filling, the system always has a singlet ground state. For large hybridization, we observe an inversion of excited inter-dot triplet and singlet states due to the level-repulsion between two sub-gap singlet states. The Shiba doublet states split in two cases: a) at non-zero superconducting phase difference and b) away from half-filling. The most complex structure of sub-gap states is found when one or both dots are in the valence fluctuation regime. Doublet splitting can lead to a parity-changing quantum phase transition to a doublet ground state in some circumstances. In such cases, we observe very different spectral weights for the transitions to singlet or triplet excited Shiba states: the triplet state is best visible on the valence-fluctuating dot, while the singlets are more pronounced on the half-filled dot.
description: 14 pages, 14 figures. Final version
Inhibition of herpes simplex virus type 2 growth by phosphorothioate oligodeoxynucleotides.
Creators: name: Cheng, Y C
name: Hanes, R N
name: Cohen, J S
name: Vazquez-Padua, M A
name: Gao, W Y
name: Stein, C A
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: Phosphorothioate homo-oligodeoxynucleotides were found to be potent inhibitors of herpes simplex virus type 2 (HSV-2) but less potent for HSV-1 in cell culture studies. Oligomers with longer chain lengths were more active against HSV-2 than those with shorter ones. Of all the compounds examined, the 28-mer phosphorothioate homo-oligodeoxynucleotides were the strongest inhibitors of HSV-2. The degree of inhibition was related to the base moiety on the order of deoxycytidine = thymidine greater than deoxyadenosine. The inhibition of HSV-2 growth by S-dC28 was dose dependent with a 90% inhibitory dose of 1 microM. At 50 microM, S-dC28 inhibited HeLa S3 cell growth by less than 10%. The anti-HSV-2 activity was time and schedule dependent. The oligomer was most inhibitory to viral growth when present during the 1-h viral adsorption period, and this effect could be enhanced by continuous drug exposure after the adsorption period. S-dC28 was also an effective inhibitor of two HSV-2 drug-resistant mutants: a phosphonoformate-resistant mutant that induces an altered DNA polymerase and a 9-(1,3-dihydroxy-2-propoxymethyl)guanine-resistant mutant that does not induce the viral thymidine kinase. In drug combination studies, phosphonoformate was shown to potentiate the action of S-dC28 against HSV-2 growth. In conclusion, because of their potency and selectivity, phosphorothioate homo-oligodeoxynucleotides are a promising new class of anti-HSV agents.
PELATIHAN KEHUMASAN DAN MEDIA BAGI STAF KPU PROVINSI SULAWESI SELATAN
Creators: name: Hamson, Zulkarnain
Publisher: name: figshare
Year: 2019
Subjects: subject: 160205 Police Administration, Procedures and Practice
subject: FOS: Law
subject: 160805 Social Change
subject: FOS: Sociology
subject: 160703 Social Program Evaluation
subject: 160512 Social Policy
subject: FOS: Political science

description: Public Relations, commonly known as a liaison between institutions, institutions and society, related to publications or explanations of performance, abbreviated as (Public Relations). Its position in the institutional structure that houses it, is known in various forms, including, Bureau, Section, Field, Unit, led by an official who is given authority based on a Decree, which outlines the Purpose, Principle and Function (Auth). One of the main functions of Public Relations is making news releases, to be disseminated to the public, related to the performance of the institutions orinstitutions that shape it. For this work function, PR is obliged to build partnerships with the media, both print, electronics and online (Website). Based on consideration ofscientific development of Public Relations, as well as the press or journalism, a training activity was held for the Staff of the General Election Commission (KPU) Office of SouthSulawesi Province, with which it is hoped that a complete understanding of public relations work must be carried out in the face of General Elections (Elections), both thelegislative, executive, and the Direct Election of Regional Heads (Pilkada).
Effect of helium bubbles on the mobility of edge dislocations in copper
Creators: name: Hoang, Minh Tam
name: Mathew, Nithin
name: Blaschke, Daniel N.
name: Fensin, Saryu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Helium bubbles can form in materials upon exposure to irradiation. It is well known that the presence of helium bubbles can cause changes in the mechanical behavior of materials. To improve the lifetime of nuclear components, it is important to understand deformation mechanisms in helium-containing materials. In this work, we investigate the interactions between edge dislocations and helium bubbles in copper using molecular dynamics (MD) simulations. We focus on the effect of helium bubble pressure (equivalently, the helium-to-vacancy ratio) on the obstacle strength of helium bubbles and their interaction with dislocations. Our simulations predict significant differences in the interaction mechanisms as a function of helium bubble pressure. Specifically, bubbles with high internal pressure are found to exhibit weaker obstacle strength as compared to low-pressure bubbles of the same size due to the formation of super-jogs in the dislocation. Activation energies and rate constants extracted from the MD data confirm this transition in mechanism and enable upscaling of these phenomena to higher length-scale models.
description: 9 pages, 10 figures; v2+v3 minor revision