cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Miscellaneous content and 'aakóoy sanyuuxáv
Creators: name: Hartt, Josepha
name: Halpern, Abraham M.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: yum

description: 2 WAV files. Miscellaneous content on Side A (February 12), continuation from preceding. For associated notebook, see Margaret Langdon Papers (Bancroft Library), carton 11, folder 2. Digitization by The Audio Archive (Burlingame, California).
Lower bounds on entanglement measures from incomplete information
Creators: name: Gühne, O.
name: Reimpell, M.
name: Werner, R. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: How can we quantify the entanglement in a quantum state, if only the expectation value of a single observable is given? This question is of great interest for the analysis of entanglement in experiments, since in many multiparticle experiments the state is not completely known. We present several results concerning this problem by considering the estimation of entanglement measures via Legendre transforms. First, we present a simple algorithm for the estimation of the concurrence and extensions thereof. Second, we derive an analytical approach to estimate the geometric measure of entanglement, if the diagonal elements of the quantum state in a certain basis are known. Finally, we compare our bounds with exact values and other estimation methods for entanglement measures.
description: 9 pages, 4 figures, v2: final version
title: Antioxidants REDOX Medecine, Vol 16, No 1 (2015): Issue title
title: Issue title
titleType: AlternativeTitle
Creators: name: Antioxidants REDOX Medecine
Publisher: name: Antioxidants REDOX Medecine
Year: 2015

description: Targeting microbiota-mitochondria inter-talk: Microbiota control mitochondria metabolism...10
Online cultural backlash? sexism and political user-generated content
Creators: name: Inguanzo, Isabel
name: Zhang, Bingbing
name: de Zúñiga, Homero Gil
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Prior research highlights substantial beneficial effects of political user-generated content (UGC) in society, such as diversifying political viewpoints, mobilizing the electorate, and fostering citizens’ civic engagement. However, important user asymmetries exist when creating political content. Gender, age, media uses, and skills gaps have been identified as key variables predicting UGC. This study addressed the political UGC gender gap from a political perspective. We build on previous theory about feminist media studies, political polarization, and cultural backlash theory to disentangle whether hostile sexism predicts UGC creation. Drawing on online survey data from four well-established democracies, we find that those individuals holding hostile sexist views are more likely to generate political content online. Further implications for democracy and the role of women in the digital sphere are discussed.
Neutrino masses and CDM in a non-supersymmetric model
Creators: name: Kubo, Jisuke
name: Suematsu, Daijiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a model for neutrino mass generation based on both the tree-level seesaw mechanism with a single right-handed neutrino and one-loop radiative effects in a non-supersymmetric framework. The generated mass matrix is composed of two parts which have the same texture and produce neutrino mass eigenvalues and mixing suitable for the explanation of neutrino oscillations. The model has a good CDM candidate which contributes to the radiative neutrino mass generation. The stability of the CDM candidate is ensured by $Z_2$ which is the residual symmetry of a spontaneously broken U(1)$^\prime$. We discuss the values of $U_{e3}$ and also estimate the masses of the relevant fields to realize an appropriate abundance of the CDM.
description: 13 pages, 2 figures, published version
H$_2$ mass-velocity relationship from 3D numerical simulations of jet-driven molecular outflows
Creators: name: Cerqueira, Adriano
name: Lefloch, Bertrand
name: Esquivel, Alejandro
name: Rivera-Ortiz, Pedro
name: Codella, Claudio
name: Ceccarelli, Cecilia
name: Podio, Linda
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Previous numerical studies have shown that in protostellar outflows, the mass-velocity distribution $m(v)$ can be well described by a broken power law $\propto v^{- γ}$. On the other hand, recent observations of a sample of outflows show that the CO intensity-velocity distribution, closely related to $m(v)$, follows an exponential law $\propto \exp(-v/v_0)$. In the present work, we revisit the physical origin of the mass-velocity relationship $m(v)$ in jet-driven protostellar outflows. We investigate the respective contributions of the different regions of the outflow, from the swept-up ambient gas to the jet. We performed 3D numerical simulations of a protostellar jet propagating into a molecular cloud using the hydrodynamical code Yguazu-a. The code takes into account atomic and ionic species and was modified to include the H$_2$ gas. We find that by excluding the jet contribution, $m(v)$ is satisfyingly fitted with a single exponential law, with $v_0$ well in the range of observational values. The jet contribution results in additional components in the mass-velocity relationship. This empirical mass-velocity relationship is found to be valid locally in the outflow. The exponent $v_0$ is almost constant in time and for a given level of mixing between the ambient medium and the jet material. In general, $v_0$ displays only a weak spatial dependence. A simple modeling of the L1157 outflow successfully reproduces the various components of the observed CO intensity-velocity relationship. Our simulations indicate that these components trace the outflow cavity of swept-up gas and the material entrained along the jet, respectively. The CO intensity-velocity exponential law is naturally explained by the jet-driven outflow model. The entrained material plays an important role in shaping the mass-velocity profile.
description: 15 pages, 11 figures. Accepted for publication in A&A. The abstract has been abridged due to the limitations on arXiv. The title has been corrected
Magnetism in Disordered Graphene and Irradiated Graphite
Creators: name: Yazyev, Oleg V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnetic properties of disordered graphene and irradiated graphite are systematically studied using a combination of mean-field Hubbard model and first-principles calculations. By considering large-scale disordered models of graphene, I conclude that only single-atom defects can induce ferromagnetism in graphene-based materials. The preserved stacking order of graphene layers is shown to be another necessary condition for achieving a finite net magnetic moment of irradiated graphite. Ab initio calculations of hydrogen binding and diffusion and of interstitial-vacancy recombination further confirm the crucial role of stacking order in $π$-electron ferromagnetism of proton-bombarded graphite.
description: 4 pages, 3 figures
Miscellaneous content
Creators: name: Hartt, Josepha
name: Halpern, Abraham M.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: yum

description: 2 WAV files. For associated notebook, see Margaret Langdon Papers (Bancroft Library), carton 11, folder 2. Digitization by The Audio Archive (Burlingame, California).
Controlled electron transmission by lead chalcogenide barrier potential
Creators: name: Pfeffer, P.
name: Zawadzki, W.
name: Dybko, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Transmission of electrons across a rectangular barrier of IV-VI semiconductor compounds is considered. Conduction electrons arrive at the barrier and are reflected or transmitted through it depending on the relative values of the barrier potential $V_b$ and the electron energy $E$. The theory, in close analogy to the Dirac four component spinors, accounts for the boundary conditions on both sides of the barrier. The calculated transmission coefficient $T_C$ is an oscillatory function of the barrier voltage varying between zero (for full electron reflection) and unity (for full electron transmission). Character of electron wave functions outside and inside the barrier is studied. There exists a total current conservation, i. e. the sum of transmitted and reflected currents is equal to the incoming current. The transmission $T_C$ is studied for various barrier widths and incoming electron energies. Finally, the transmission coefficient $T_C$ is studied as a function of $V_b$ for decreasing energy gaps $E_g$ of different Pb$_{1-x}$Sn$_x$Se compounds in the range of 150 meV $\geq E_g \geq$ 2 meV. It is indicated that for very small gap values the behaviour of $T_C$ closely resembles that of the chiral electron tunneling by a barrier in monolayer graphene. For $E_g$ =0 (Pb$_{0.81}$Sn$_{0.19}$Se) the coefficient $T_C$ reaches the value of 1 independently of $V_b$.
description: 6 pages, 5 figures
POST-EARTHQUAKE ASSESSMENT OF DAMAGED NON-DUCTILE BUILDINGS: DETAILED EVALUATION FOR RATIONAL REPARABILITY DECISIONS
Creators: name: Gaetani D'Aragona, Marco
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Non-ductile reinforced concrete frame structures represent a large portion of the existing building stock all over the world; the lacking of important reinforcement details on such constructions render them vulnerable and a significant source of hazard to life in future earthquakes as well as a of economic losses during moderate to severe seismic ground motions. Ideally, effective risk mitigation may be obtained with structural retrofit or by building demolition and replacement. However, economic and social constraints impair abrupt application of those solutions, requiring the study of alternative policies to encourage owners of more vulnerable structures to undertake risk assessment and mitigation. One important aspect in debate on risk mitigation is the treatment of buildings damaged by earthquakes and their possible reparability; different solutions may be adopted in order to make cities safer and more resilient to earthquakes. Building reparability strongly depends on the expected future performance of damaged building and the required repair costs. After earthquakes, the exhaustive assessment of the costs requires detailed on site surveys to establish the damage level, amount of needed interventions to restore the building in all its structural and nonstructural components and the computation of related costs. On the other hand, analytical prediction of damage level due to earthquakes could help significantly to forecast expected costs; also, applying performance-based earthquake engineering methods can contribute significantly to this scope and further allow the sound evaluation of safety variation due to damage, in addition to costs. The main objective of this research is to explore and test different methods and tools for the assessment of buildings reparability taking into account both the expected safety variation and costs. In particular, two main level of analyses for the assessment of damaged buildings are explored, namely detailed analysis based on non-linear time-histories, that is finalized to accurate estimation of expected safety variation for mainshocks corresponding to increasing return period and related repair costs, and pushover based ones, that allows simplified, practice oriented, assessment of variation of the residual capacity and performance loss due to assigned earthquakes.
Effect of hydraulic retention time on landfill leachate and gas characteristics
Creators: name: Munasinghe, Ranjani
Publisher: name: University of British Columbia
Year: 2009

description: Previous field studies carried out in order to characterize leachate in Vancouver, B.C. landfills show an effect of water input patterns on leachate characteristics. With high rainfall into the landfills, high volatile fatty acid (VFA) concentrations appear in leachate. It is postulated that with high rainfall there is a reduction in hydraulic retention time (HRT) which results in a reduction in the conversion of VFA to CH4 and CC>2- Coincidence of peak infiltration rates with high dissolved organic carbon concentrations greatly increases the pollutant loadings to the treatment plants. The objective of the study was to investigate the effects of HRT on landfill leachate and gas characteristics. HRTs from 3 to 200 days were assigned to eighteen lab scale lysimeters during four experimental phases in which the HRT was changed by changing the infiltration rates through the lysimeters. A relationship was established between HRT and infiltration rate in refuse columns and tested using tracer studies. [Additional abstract]
The Evolution of Central Stars of Planetary Nebulae
Creators: name: Herwig, Falk
name: Freytag, Bernd
name: Werner, Klaus
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The evolution of central stars of planetary nebulae can proceed in several distinct ways, either leading to H-deficiency or to H-normal surface composition. Several new simulations of the evolution channels that lead to H-deficiency are now available, mainly the born-again scenarios that are triggered by a He-shell flash during the hot pre-white dwarf evolution phase. A realistic AGB progenitor evolution is important for correct HRD tracks, that allow mass determinations. New hydrodynamic simulations of He-shell flash convection including cases with H-ingestion are now performed, and allow a determination of the convective extra-mixing efficiency. This has direct consequences for the intershell abundance distribution of AGB stars that can be observed in the H-deficient CSPN.
description: 8 pages, 4 figures, invited talk IAU Symp 234 Planetary Nebulae
Letter from J.E. McAllister to James Goldie, October 11, 1908
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to James Goldie, addressed to Rainbow Ranche (Okanagan Centre, B.C.), from J.E. McAllister, from Greenwood, B.C., dated October 11, 1908. In the letter, he discusses both Bear Park Ranche and Rainbow propositions. He hopes to meet with James Goldie before he decides to "quit Rainbow.
On the Relation between Kappa Distribution Functions and the Plasma Beta Parameter in the Earth Magnetosphere: THEMIS observations
Creators: name: Eyelade, Adetayo V.
name: Stepanova, Marina
name: Espinoza, Cristobal M.
name: Moya, Pablo S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The Earth's magnetosphere represents a natural plasma laboratory that allows us to study the behavior of particle distribution functions in the absence of Coulomb collisions, typically described by the Kappa distributions. We have investigated the properties of these functions for ions and electrons in different magnetospheric regions, thereby making it possible to reveal the $κ$-parameters for a wide range of plasma beta ($β$) values (from $10^{-3}$ to $10^{2}$). This was done using simultaneous ion and electron measurements from the five Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft spanning the years 2008 to 2018. It was found that for a fixed plasma $β$, the $κ$-index and core energy ($E_c$) of the distribution can be modeled by the power-law $κ=AE_c^γ$ for both species, and the relation between $β$, $κ$, and $E_c$ is much more complex than earlier reported: both $A$ and $γ$ exhibit systematic dependencies with $β$. Our results indicate that $β\sim 0.1-0.3$ is a range where the plasma is more dynamic since it is influenced by both the magnetic field and temperature fluctuations, which suggests that the transition between magnetically dominated plasmas to kinetically dominated plasmas occurs at these values of $β$. For $β> 1 $, both $A$ and $γ$ take nearly constant values, a feature that is especially notable for the electrons and might be related to their demagnetization. The relation between $β$, $κ$, and $E_c$ that we present is an important result that can be used by theoretical models in the future.
description: 20 pages, 13 figures, to be published in Astrophysical Journal Supplement Series
COREnect Deliverable 4.1 Initial report on community building and outreach strategy
Creators: name: AUSTRALO
Publisher: name: Zenodo
Year: 2021
Subjects: European Core Technologies for future connectivity systems and components

description: This document, COREnect Deliverable 4.1, “Initial report on community building and outreach strategy”, describes the initial strategy for stakeholder engagement and community building as well as the communication and dissemination plan of the project. It also includes some preliminary ideas for the impact and exploitation of the expected results. This document covers initial results from Tasks 4.1 “Stakeholder engagement and community building” and 4.2 “Outreach, dissemination, and exploitation”.It covers the activities performed during the first 6 months of the project, i.e., from 1st July 2020 to 31st December 2020. Although COREnect formally started on 1st July, most of the activities addressed in this deliverable actually kicked off in September 2020. This, along with the COVID-19 context, led the project to adapt the 1st COREnect workshop and the co-located expert meeting. Indeed: •The whole EFECS 2020 conference, including the 1st COREnect workshop, were organised as online events. •The initial plan forecasted a start of the project in September 2020, and the EFECS workshop was then envisioned as the opportunity to hold the first meeting between experts of the 3 Expert Groups. Upon request of the European Commission, the project started on July 1st, 2020. Due to the summer vacation period, Expert Groups became operational in September, and they already started to get together – in remote mode – before EFECS.
Tests of Lorentz symmetry using antihydrogen
Creators: name: Russell, Neil
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Signals of CPT and Lorentz violation are possible in the context of spectroscopy using hydrogen and antihydrogen. We apply the Standard-Model Extension, a broad framework for Lorentz breaking in physics, to various transitions in the hydrogen and antihydrogen spectra. The results show an unsuppressed effect in the transition between the upper two hyperfine sublevels of the ground state of these systems. We also discuss related tests in Penning traps, and recent work on Lorentz violation in curved spacetime.
description: 11pp, invited talk at PQE 37 Conference, Snowbird, Utah, USA, 2-6 Jan 2007
Two strong-lensing clusters confront universal dark-matter profiles
Creators: name: Saha, P.
name: Read, J. I.
name: Williams, L. L. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the galaxy clusters SSDS J1004+411 and ACO 1689, a large number of multiply-imaged background objects have recently been observed. We use these data to map the projected mass distribution in the inner regions of these clusters. The source redshifts span a large range, which eliminates the degeneracies that plague nearly all lensing work. As a result the mass maps are very well-constrained, despite very weak prior assumptions. ACO 1689 lenses so many objects that we can afford to map it twice using disjoint sets of images, thus verifying our internal error estimates. We then deproject the mass maps (pretending for this purpose that they are spherical) and obtain inner profiles consistent with rho propto r^{-1} and indistinguishable from recent cold dark matter simulations. Assuming that baryons make only a small difference to the profile outside sim 10 kpc, these results support the prediction of a universal inner profile for dark matter structures, independent of any parametrization of that profile.
description: To appear in ApJL
Nonlinear Inflaton Fragmentation after Preheating
Creators: name: Felder, Gary N.
name: Kofman, Lev
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the nonlinear dynamics of inflaton fragmentation during and after preheating in the simplest model of chaotic inflation. While the earlier regime of parametric resonant particle production and the later turbulent regime of interacting fields evolving towards equilibrium are well identified and understood, the short intermediate stage of violent nonlinear dynamics remains less explored. Lattice simulations of fully nonlinear preheating dynamics show specific features of this intermediate stage: occupation numbers of the scalar particles are peaked, scalar fields become significantly non-gaussian and the field dynamics become chaotic and irreversible. Visualization of the field dynamics in configuration space reveals that nonlinear interactions generate non-gaussian inflaton inhomogeneities with very fast growing amplitudes. The peaks of the inflaton inhomogeneities coincide with the peaks of the scalar field(s) produced by parametric resonance. When the inflaton peaks reach their maxima, they stop growing and begin to expand. The subsequent dynamics is determined by expansion and superposition of the scalar waves originating from the peaks. Multiple wave superposition results in phase mixing and turbulent wave dynamics. Thus, the short intermediate stage is defined by the formation, expansion and collision of bubble-like field inhomogeneities associated with the peaks of the original gaussian field. This process is qualitatively similar to the bubble-like inflaton fragmentation that occurs during tachyonic preheating after hybrid or new inflation.
description: 9 pages, 6 figs
Midlife Crises in Dwarf Galaxies in the NGC 5353/4 Group
Creators: name: Tully, R. Brent
name: Trentham, Neil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This third paper in a series about the dwarf galaxy populations in groups within the Local Supercluster concerns the intermediate mass (2.1 x 10^13 solar) NGC 5353/4 Group with a core dominated by S0 systems and a periphery of mostly spiral systems. Dwarf galaxies are strongly concentrated toward the core. The mass to light ratio M/L_R=105 in solar units is a factor 3 lower than for the two groups studied earlier in the series. The properties of the group suggest it is much less dynamically evolved than those two groups of early type galaxies. By comparison, the NGC 5353/4 Group lacks superluminous systems but has a large fraction of intermediate luminosity galaxies; or equivalently, a luminosity function with a flatter faint end slope. The luminosity function for the NGC 5353/4 Group should steepen as the intermediate luminosity galaxies merge. Evidence for the ongoing collapse of the group is provided by the unusually large incidence of star formation activity in small galaxies with early morphological types. The pattern in the distribution of galaxies with activity suggests a succession of infall events. Residual gas in dwarfs that enter the group is used up in sputtering events. The resolution of midlife crises is exhaustion.
description: Accepted for publication in Astronomical Journal, tentatively April 2008. 34 pages, 24 figures, 3 tables
Insta(nt)famous? Visual self-presentation and the use of masculine and feminine issues by female politicians on Instagram
Creators: name: Brands, Charlotte
name: Kruikemeier, Sanne
name: Trilling, Damian
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: This study examines how female politicians are using Instagram to present themselves to the electorate and how this affects audience engagement. A manual content analysis was conducted to explore how female politicians, compared to male politicians (N = 40), use Instagram in terms of visual self-presentation, the use of masculine and feminine issues, and how this may lead to increased engagement (i.e., likes and comments). In total, N = 762 posts were manually analyzed. The study shows that female politicians receive more likes when they are visible in a picture compared to male politicians. It also reveals that male and female politicians both refer more to feminine issues than to masculine issues, although the use of feminine issues resulted in less likes. We find that some issues lead to more discussion amongst Instagram users, and that this differs between male and female politicians. The study sheds light on how politicians use Instagram and offers insights into how (female) politicians can use the platform to their advantage.
Extinction Columns and Intrinsic X-ray Spectra of the Anomalous X-ray Pulsars
Creators: name: Durant, Martin
name: van Kerkwijk, Marten H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The X-ray spectra of Anomalous X-ray Pulsars have long been fit by smooth, empirical models such as the sum of a black-body plus a power law. These reproduce the ~0.5 to 10 keV range well, but fail at lower and higher energies, grossly over-predicting the optical and under-predicting the hard X-ray emission. A poorly constrained source of uncertainty in determining the true, intrinsic spectra, in particular at lower energies, is the amount of interstellar extinction. In previous studies, extinction column densities with small statistical errors were derived as part of the fits of the spectra to simple continuum models. Different choices of model, however, each produced statistically acceptable fits, but a wide range of columns. Here, we attempt to measure the interstellar extinction in a model-independent way, using individual absorption edges of the elements O, Fe, Ne, Mg and Si in X-ray grating spectra taken with XMM-Newton. We find that our inferred equivalent hydrogen column density NH for 4U 0142+61 is a factor of 1.4 lower than the typically quoted value from black-body plus power-law fits, and is now consistent with estimates based on the dust scattering halo and visual extinction. For three other sources, we find column densities consistent with earlier estimates. We use our measurements to recover the intrinsic spectra of the AXPs empirically, without making assumptions on what the intrinsic spectral shapes ought to be. We find that the power-law components that dominate at higher energies do not extend below the thermal peak.
description: 24 pages, 4 figures. Accepted for publication in ApJ
Modeling Study of the Dip/Hump Feature in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ Tunneling Spectroscopy
Creators: name: Romano, P.
name: Ozyuzer, L.
name: Yusof, Z.
name: Kurter, C.
name: Zasadzinski, J. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The tunneling spectra of high temperature superconductors on Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ (Bi-2212) reproducibly show a high bias structure in the form of a dip-hump at voltages higher than the gap voltage. Of central concern is whether this feature originates from the normal state background or is intrinsic to the superconducting mechanism. We address this issue by generating a set of model conductance curves - a ''normal state'' conductance that takes into account effects such as the band structure and a possible pseudogap, and a pure superconducting state conductance. When combined, the result shows that the dip-hump feature present in the experimental conductance curves cannot be naively attributed to a normal state effect. In particular, strong dip features found in superconductor-insulator-superconductor data on optimally-doped Bi-2212, including negative dI/dV, cannot be a consequence of an extrinsic pseudogap. However, such features can easily arise from states-conserving deviations in the superconducting density of states, e.g., from strong-coupling effects.
description: 4 pages, 4 figures
Characterising through Erasing: A Theoretical Framework for Representing Documents Inspired by Quantum Theory
Creators: name: Huertas-Rosero, Álvaro Francisco
name: Azzopardi, Leif
name: van Rijsbergen, C. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Retrieval (cs.IR)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: H.3.1

description: The problem of representing text documents within an Information Retrieval system is formulated as an analogy to the problem of representing the quantum states of a physical system. Lexical measurements of text are proposed as a way of representing documents which are akin to physical measurements on quantum states. Consequently, the representation of the text is only known after measurements have been made, and because the process of measuring may destroy parts of the text, the document is characterised through erasure. The mathematical foundations of such a quantum representation of text are provided in this position paper as a starting point for indexing and retrieval within a ``quantum like'' Information Retrieval system.
description: 4 pages, 3 figures, Quantum Interaction Symposium 2008
Early spectral evolution of classical novae: consistent evidence for multiple distinct outflows
Creators: name: Aydi, E.
name: Chomiuk, L.
name: Izzo, L.
name: Harvey, E. J.
name: Leahy-McGregor, J.
name: Strader, J.
name: Buckley, D. A. H.
name: Sokolovsky, K. V.
name: Kawash, A.
name: Kochanek, C. S.
name: Linford, J. D.
name: Metzger, B. D.
name: Mukai, K.
name: Orio, M.
name: Shappee, B. J.
name: Shishkovsky, L.
name: Steinberg, E.
name: Swihart, S. J.
name: Sokoloski, J. L.
name: Walter, F. M.
name: Woudt, P. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The physical mechanism driving mass ejection during a nova eruption is still poorly understood. Possibilities include ejection in a single ballistic event, a common envelope interaction, a continuous wind, or some combination of these processes. Here we present a study of 12 Galactic novae, for which we have pre-maximum high-resolution spectroscopy. All 12 novae show the same spectral evolution. Before optical peak, they show a slow P Cygni component. After peak a fast component quickly arises, while the slow absorption remains superimposed on top of it, implying the presence of at least two physically distinct flows. For novae with high-cadence monitoring, a third, intermediate-velocity component is also observed. These observations are consistent with a scenario where the slow component is associated with the initial ejection of the accreted material and the fast component with a radiation-driven wind from the white dwarf. When these flows interact, the slow flow is swept up by the fast flow, producing the intermediate component. These colliding flows may produce the gamma-ray emission observed in some novae. Our spectra also show that the transient heavy element absorption lines seen in some novae have the same velocity structure and evolution as the other lines in the spectrum, implying an association with the nova ejecta rather than a pre-existing circumbinary reservoir of gas or material ablated from the secondary. While this basic scenario appears to qualitatively reproduce multi-wavelength observations of classical novae, substantial theoretical and observational work is still needed to untangle the rich diversity of nova properties.
description: 39 pages, 35 figures, submitted to ApJ
Grids of stellar models with rotation: V. Models from 1.7 to 120 Msun at zero metallicity
Creators: name: Murphy, Laura J.
name: Groh, Jose H.
name: Ekstrom, Sylvia
name: Meynet, Georges
name: Pezzotti, Camila
name: Georgy, Cyril
name: Choplin, Arthur
name: Eggenberger, Patrick
name: Farrell, Eoin
name: Haemmerle, Lionel
name: Hirschi, Raphael
name: Maeder, Andre
name: Martinet, Sebastien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Understanding the nature of the first stars is key to understanding the early universe. With new facilities such as JWST we may soon have the first observations of the earliest stellar populations, but to understand these observations we require detailed theoretical models. Here we compute a grid of stellar evolution models using the Geneva code with the aim to improve our understanding of the evolution of zero-metallicity stars, with particular interest in how rotation affects surface properties, interior structure, and metal enrichment. We produce a range of models of initial masses (Mini) from 1.7 Msun to 120 Msun, focusing on massive models of 9 Msun < Mini < 120 Msun. Our grid includes models with and without rotation, with rotating models having an initial velocity of 40% of the critical velocity. We find that rotation strongly impacts the evolution of the first stars, mainly through increased core size and stronger H-burning shells during core He-burning. Without radiative mass loss, angular momentum builds at the surface in rotating models, thus models of initial masses Mini > 60 Msun reach critical rotation on the main sequence and experience mass loss. We find that rotational mixing strongly affects metal enrichment, but does not always increase metal production as we see at higher metallicities. This is because rotation leads to an earlier CNO boost to the H shell during He-burning, which may hinder metal enrichment depending on initial mass and rotational velocity. Electronic tables of this new grid of Population III models are publicly available.
description: 20 pages, 15 figures. Accepted for publication in MNRAS
Additional file 1 of Medical student experiences of equality, diversity, and inclusion: content analysis of student feedback using Bronfenbrenner’s ecological systems theory
Creators: name: Nolan, Helen Anne
name: Owen, Katherine
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1.
Exclusive B-> M ν\barν (M= π, K, ρ, K^*) Decays and Leptophobic Z^\prime Model
Creators: name: Jeon, Jong Hun
name: Kim, C. S.
name: Lee, Jake
name: Yu, Chaehyun
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the exclusive flavor changing neutral current processes B -> M ν\barν (M= π, K, ρ, K^*) in the leptophobic Z^\prime model, in which the charged leptons do not couple to the extra Z^\prime boson. We find that these exclusive modes are very effective to constrain the leptophobic Z^\prime model. In the leptophobic Z^\prime model, additional right-handed neutrinos are introduced and they can contribute to the missing energy signal in B -> M + E_missing decays. Through the explicit calculations, we obtain quite stringent bounds on the model parameters, |U_{sb}^{Z^\prime}| \leq 0.29 and |U_{db}^{Z^\prime}| \leq 0.61, from the already existing experimental data. We also briefly discuss an interesting subject of massive right-handed neutrinos, which might be connected with the dark matter problem.
description: 17 pages, 3 figures, minor corrections, version to appear in PLB
Unified Quality Assessment of In-the-Wild Videos with Mixed Datasets Training
Creators: name: Li, Dingquan
name: Jiang, Tingting
name: Jiang, Ming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Video quality assessment (VQA) is an important problem in computer vision. The videos in computer vision applications are usually captured in the wild. We focus on automatically assessing the quality of in-the-wild videos, which is a challenging problem due to the absence of reference videos, the complexity of distortions, and the diversity of video contents. Moreover, the video contents and distortions among existing datasets are quite different, which leads to poor performance of data-driven methods in the cross-dataset evaluation setting. To improve the performance of quality assessment models, we borrow intuitions from human perception, specifically, content dependency and temporal-memory effects of human visual system. To face the cross-dataset evaluation challenge, we explore a mixed datasets training strategy for training a single VQA model with multiple datasets. The proposed unified framework explicitly includes three stages: relative quality assessor, nonlinear mapping, and dataset-specific perceptual scale alignment, to jointly predict relative quality, perceptual quality, and subjective quality. Experiments are conducted on four publicly available datasets for VQA in the wild, i.e., LIVE-VQC, LIVE-Qualcomm, KoNViD-1k, and CVD2014. The experimental results verify the effectiveness of the mixed datasets training strategy and prove the superior performance of the unified model in comparison with the state-of-the-art models. For reproducible research, we make the PyTorch implementation of our method available at https://github.com/lidq92/MDTVSFA.
description: 20 pages, 12 figures, 7 tables, accepted by IJCV. This is the version provided to IJCV office
COREnect Deliverable 3.1 Report on the activities of expert groups
Creators: name: AUSTRALO
Publisher: name: Zenodo
Year: 2021
Subjects: European Core Technologies for future connectivity systems and components

description: D3.1 1st Report on the Activities of Expert Groups7. This project has received funding from the European Union’s Horizon 2020re-search and innovation program under grant agreement No 956830.1IntroductionCOREnect (European Core Technologies for future connectivity systems and components) is a 2-year Coordination and Support Action project selected by the European Commission in the frame of the Horizon 2020 Research & Innovation programme, starting from 1st July 2020]. Within 2 years of its duration, the COREnect will bring together the most prominent European industrial and academia players as well as industry associations in the network, microelectronics, and verticals domains to jointly develop a high-level strategic roadmap of core subsystem and component technologies for supporting future connectivity. The goal is to establish sustainable European technology sovereignty in 5th Generation (5G) and beyond, promote innovation and business opportunities, e.g., for small and medium-sized enterprises (SMEs), pave the way for one or more future European champions in this area, and lay a solid foundation for the long-term success of both industries. COREnect End-to-end System View and Scopes of Three Expert GroupsBased on the initially identified COREnect end-to-end system view together with value chain consideration as shown in Figure 1, COREnect organizes three Expert Groups (EGs) within work package (WP) 3 to address industry roadmaps in three strategic focus areas •Expert Group #1 Computing/Storage Core Technologies for Future network •Expert Group #2 Communications/Sensing Core Technologies for Future network •Expert Group #3 Peripheral Core Technologies for Future network each of which consists of •internal experts from COREnect technical partners (Bosch, Ericsson, III-V Lab/Nokia, TUD, Infineon, NXP, ST, IMEC, CEA) •external experts identified by COREnect technical partners and community leaders (5G IA, AE-NEAS and AUSTRALO) as representing European research excellence on the topics. The participation of all internal and external experts in COREnect is set on a voluntary basis without any payment. Potential refunding of traveling costs to attend Face-to-Face expert group meetings is foreseen if such meetings take place.
การละเมิดลิขสิทธิ์สินค้าประเภทโสตทัศนวัสดุในเขตเศรษฐกิจชายแดนกรณีศึกษาเขตพื้นที่ชายแดน อำเภอแม่สาย จังหวัดเชียงรายประเทศไทยและจังหวัดท่าขี้เหล็ก ประเทศพม่า
Creators: name: สว่าง กันศรีเวียง
Publisher: name: มหาวิทยาลัยราชภัฏเชียงราย
Year: 2555

description: 1, 6, วารสารการวิจัยกาสะลองคำ มหาวิทยาลัยราชภัฏเชียงราย
การวิเคราะห์อภิมานประสิทธิภาพของรูปแบบการสอนที่ส่งผลต่อการคิดวิเคราะห์ของผู้เรียน
Creators: name: สายสวลี วิทยาภัค
Publisher: name: มหาวิทยาลัยราชภัฏเชียงราย
Year: 2555

description: 1, 6, วารสารการวิจัยกาสะลองคำ มหาวิทยาลัยราชภัฏเชียงราย
การศึกษาปัญหาการวางแผนกลยุทธ์สถานศึกษาขั้นพื้นฐาน สังกัดสำนักงานเขตพื้นที่การศึกษาตราด
Creators: name: วรรณา สุภาพุฒ
Publisher: name: มหาวิทยาลัยราชภัฏเชียงราย
Year: 2555

description: 1, 6, วารสารการวิจัยกาสะลองคำ มหาวิทยาลัยราชภัฏเชียงราย
Boundary Harnack inequality and a priori estimates of singular solutions of quasilinear elliptic equations
Creators: name: Bidaut-Veron, Marie-Francoise
name: Borghol, Rouba
name: Veron, Laurent
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J60

description: We extend some classical results dealing with boundary Harnack inequatilities to a class of quasilinear elliptic equations and derive some new estimates for solutions of such equations with an isolated singularity on the boundary of a domain.
description: 17 pages
On the complexity of proper holomorphic mappings between balls
Creators: name: D'Angelo, John P
name: Lebl, Jiri
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32H35

description: We make several new contributions to the study of proper holomorphic mappings between balls. Our results include a degree estimate for rational proper maps, a new gap phenomenon for convex families of arbitrary proper maps, and an interesting result about inverse images.
description: 19 pages, plain tex; improved exposition, added corollary to Theorem 1, strengthened Theorem 4
Dynamics and Structures of Nanoparticles in Polymer Melts
Creators: name: Salzano De Luna, Martina
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: The possibility of combining the physical properties of different components to obtain materials with new structural or functional features is what really makes polymer nanocomposites attractive. Actually, to fully exploit the potential of such a class of materials, the morphological and structural implications stemming from the nanometric sizes of the filler have to be taken into account. In the present dissertation, the physical mechanisms governing the nanoparticle dynamics and connectivity in polymer melts are investigated from a fundamental point of view. For such a purpose, the linear viscoelastic response of polymer nanocomposites has been deeply studied and morphological analyses have been used as support.
As thermodynamically out-of-equilibrium materials, if provided by sufficient energy, polymer nanocomposites evolve to achieve equilibrium. In this process, the nanoparticles rearrange themselves in the melt and typically aggregate, dictating the ultimate microstructure of the material from which its macroscopic performances depend. In the first part of the study, the key role of the mobility of nanoparticles on their dynamics of assembly has been highlighted. The investigation then focuses on the rheological implications of the superstructures formed by the nanoparticles when they are free to rearrange in the host polymer medium. A simple two-phase model, recently proposed in the literature, has been used for such a purpose. First, the ability of the model in recognizing the elasticity of filler networks too weak to be identified by conventional viscoelastic analyses has been demonstrated. More importantly, the generalization of the model has been proposed and validated, proving that it is able to describe the linear viscoelasticity of polymer nanocomposites differing among them both in the nature of the nanoparticles and in the affinity between the polymer and filler phases. A further test of the robustness of the approach is given by verifying the possibility of satisfactorily describing the viscoelastic response of other complex fluids, such as nanocomposites based on biphasic polymer matrices. In the end, the gained fundamental knowledge has been exploited for practical purposes. The study is targeted to the investigation of the effect of material- and process-related factors on the filler state of dispersion in the final polymer nanocomposite.
COREnect Deliverable 2.1 Initial vision and requirement report
Creators: name: AUSTRALO
Publisher: name: Zenodo
Year: 2021
Subjects: European Core Technologies for future connectivity systems and components

description: This document summarizes the initial common vision of the COREnect consortium, as of December 2020. It provides an analysis of Europe’s current position in both the telecommunications and microelectronics industry, as well as the impact that EU research has had in those sectors in recent years.
Spectroscopy of the brightest optical counterparts of X-ray sources in the direction of M~31 and M~33
Creators: name: Hatzidimitriou, D.
name: Pietsch, W.
name: Misanovic, Z.
name: Reig, P.
name: Haberl, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent surveys of the Local Group spiral Galaxies M31 and M33 with XMM-Newton yielded a large number of X-ray sources. As part of the effort to identify and classify the objects responsible for this X-ray emission, we have obtained optical spectra of the brightest optical counterparts of the identified X-ray sources, using the 1.3m Skinakas Telescope. Most of these objects are foreground star candidates. The purpose of the present study is to confirm this identification and to explore the compatibility between the optical spectral classification and the observed X-ray properties of the sources. We have obtained optical spectra for the 14 brightest optical counterparts of X-ray sources identified by XMM-Newton in the direction of M31 and for 21 optical counterparts in the direction of M33, using the 1.3m Skinakas telescope in Crete, Greece. All of the M31 sources and all but one of the M33 sources were confirmed to be foreground stars, of spectral types between A and M. One of the stars is a late M dwarf with H-alpha emission, a flare star, also displaying strong X-ray variability. One of the M~33 sources (lying within the D25 ellipse) corresponds to a previously known background galaxy, LEDA 5899.
description: 9 pages, 12 figures, accepted in A&A