cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Nature of Nearby Counterparts to Intermediate Redshift Luminous Compact Blue Galaxies II. CO Observations
Creators: name: Garland, C. A.
name: Williams, J. P.
name: Pisano, D. J.
name: Guzman, R.
name: Castander, F. J.
name: Brinkmann, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a single-dish beam-matched survey of the three lowest rotational transitions of CO in a sample of 20 local (D < 70 Mpc) Luminous Compact Blue Galaxies (LCBGs). These ~L*, blue, high surface brightness, starbursting galaxies were selected with the same criteria used to define LCBGs at higher redshifts. Our detection rate was 70%, with those galaxies having Lblue<7e9 Lsun no detected. We find the H2 masses of local LCBGs range from 6.6e6 to 2.7e9 Msun, assuming a Galactic CO-to-H2 conversion factor. Combining these results with our earlier HI survey of the same sample, we find that the ratio of molecular to atomic gas mass is low, typically 5-10%. Using a Large Velocity Gradient model, we find that the average gas conditions of the entire ISM in local LCBGs are similar to those found in the centers of star forming regions in our Galaxy, and nuclear regions of other galaxies. Star formation rates, determined from IRAS fluxes, are a few solar masses per year, much higher per unit dynamical mass than normal spirals. If this rate remains constant, the molecular hydrogen depletion time scales are short, 10-200 Myr.
description: accepted for publication in the ApJ (vol 625)
Topological turbulence in spin-orbit-coupled driven-dissipative quantum fluids of light generates high angular momentum states
Creators: name: Koniakhin, S. V.
name: Malpuech, G.
name: Solnyshkov, D. D.
name: Nalitov, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate the formation of a high angular momentum turbulent state in an exciton-polariton quantum fluid with TE-TM Spin-Orbit Coupling (SOC). The transfer of particles from quasi-resonantly cw pumped \spl component to \sm component is accompanied with the generation of a turbulent gas of quantum vortices by inhomogeneities. We show that this system is unstable with respect to the formation of bogolons at a finite wave vector, controlled by the laser detuning. In a finite-size cavity, the domains with this wave vector form a ring-like structure along the border of a cavity, with a gas of mostly same-sign vortices in the center. The total angular momentum is imposed by the sign of TE-TM SOC, the wave vector of instability, and the cavity size. This effect can be detected experimentally via local dispersion measurements or by interference. The proposed configuration thus allows simultaneous experimental studies of quantum turbulence and high-angular momentum states in continuously-pumped exciton-polariton condensates.
description: 9 pages, 5 figures
Denzler, Georg, Grasmück, Ernst Ludwig: Geschichtlichkeit und Glaube
Creators: name: Nickel, Edgar
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 41 Nr. 2 (1992): Ökumenische Rundschau, Band 41, Heft 2
Fomin-Zelevinsky mutation and tilting modules over Calabi-Yau algebras
Creators: name: Iyama, Osamu
name: Reiten, Idun
Publisher: name: arXiv
Year: 2006
Subjects: subject: Representation Theory (math.RT)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: We say that an algebra $Λ$ over a commutative noetherian ring $R$ is Calabi-Yau of dimension $d$ ($d$-CY) if the shift functor $[d]$ gives a Serre functor on the bounded derived category of the finite length $Λ$-modules. We show that when $R$ is $d$-dimensional local Gorenstein the $d$-CY algebras are exactly the symmetric $R$-orders of global dimension $d$. We give a complete description of all tilting modules of projective dimension at most one for 2-CY algebras, and show that they are in bijection with elements of affine Weyl groups, preserving various natural partial orders. We show that there is a close connection between tilting theory for 3-CY algebras and the Fomin-Zelevinsky mutation of quivers (or matrices). We prove a conjecture of Van den Bergh on derived equivalence of non-commutative crepant resolutions.
description: 53 pages. To appear in Amer. J. Math. In 3rd version, abstract, 8.13 and 8.18 are added, and 2.3 is fixed
Additional file 5 of Optimizing Cost-Effective gene expression phenotyping approaches in cattle using 3′ mRNA sequencing
Creators: name: Mohamed, Ruwaa I.
name: Ault-Seay, Taylor B.
name: Moisá, Sonia J.
name: Beever, Jonathan E.
name: Ríus, Agustín G.
name: Rowan, Troy N.
Publisher: name: figshare
Year: 2025
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 5
Chemical abundances in six nearby star-forming regions: implications for galactic evolution and planet searches around very young stars
Creators: name: Santos, N. C.
name: Melo, C.
name: James, D. J.
name: Gameiro, J. F.
name: Bouvier, J.
name: Gomes, J. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we present a study of chemical abundances in six star-forming regions. Stellar parameters and metallicities are derived using high-resolution, high S/N spectra of weak-line T-Tauri stars in each region. The results show that nearby star-forming regions have a very small abundance dispersion (only 0.033dex in [Fe/H]). The average metallicity found is slightly below that of the Sun, although compatible with solar once the errors are taken into account. The derived abundances for Si and Ni show that the observed stars have the abundances typical of Galactic thin disk stars of the same metallicity. The impact of these observations is briefly discussed in the context of the Galactic chemical evolution, local inter-stellar medium abundances, and in the origin of metal-rich stars in the solar neighbourhood (namely, stars more likely to harbour planets). The implication for future planet-search programmes around very young, nearby stars is also discussed.
description: 10 pages, 5 figures, accepted for publication in A&A
TARBIYA JARAYONIDA INTELLEKTUAL–KREATIV QOBILIYATLARNI RIVOJLANTIRISHNING MAZMUNIY XUSUSIYATLARI
Creators: name: Novshadbekova Dilnura Zafarbek qizi
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya: Ushbu maqolada tarbiya jarayonida kreativ va intellektual fikrlash ko’nikmalarini shakllantirish mazmuni va uslublari bo‘yicha ma’lumotlar keltirilgan. Xalqaro baholash  dasturida intellectual-kreativ  fikrlashni baholash yo‘nalishi  haqida  asosiy tushunchalar, baholashda e’tibor qaratiladigan muhim jihatlar va baholash yondashuvlari keltirib o‘tilgan.
Dirac quasinormal frequencies of Reissner-Nordström black hole in Anti-de Sitter spacetime
Creators: name: Jing, Jiliang
name: Pan, Qiyuan
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The quasinormal modes (QNMs) of Dirac field perturbations of a Reissner-Nordström black hole in an asymptotically Anti-de Sitter spacetime are investigated. We find that both the real and imaginary parts of the fundamental quasinormal frequencies for large black holes are the linear functions of the Hawking temperature, and the slope of the lines for the real parts decreases while that for the magnitude of the imaginary parts increases as the black hole charge increases. According to the Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence, the fact shows that different charge presents different time scale in three-dimensional CFT. Another interesting result is that the quasinormal frequencies become evenly spaced for high overtone number, and in the spacing expressions the real part decreases while the magnitude of the imaginary part increases as the charge increases. We also study the relation between quasinormal frequencies and angular quantum number and find that the real part increases while the magnitude of the imaginary part decreases as the angular quantum number increases.
description: 16 pages, 4 figures
Divergent natural selection and müllerian mimicry in polymorphic heliconius cydno (Lepidoptera: Nymphalidae)
Creators: name: Kapan, Durrell D.
Publisher: name: University of British Columbia
Year: 2009

description: Natural selection favours bright colours or bold patterns that advertise unpalatability. In a noxious polymorphic species frequency-dependent selection should lead to fixation of the common morph, because rare morphs suffer relatively higher attack rates by naive predators. This generally leads to warning colouration that is monomorphic within species and shared between species (Müllerian mimicry). However, several unpalatable species of Heliconius butterflies (Lepidoptera: Nymphalidae) exhibit polymorphic warning colouration within a population. One possible explanation is that divergent selection may favour different colour-pattern morphs of a single unpalatable species if each matches a different warningly coloured unpalatable Miillerian mimic species (comodels). In this thesis I explore this hypothesis by investigating the genetic basis and fitness consequences of polymorphism for warning-colour pattern within a single species of Heliconius butterfly, H. cydno. In Western Ecuador, H. cydno is polymorphic for colour (yellow versus white), pattern (triangle versus band), and hind-wing band-width. I find that H. cydno's colour-pattern polymorphism has a simple Mendelian genetic basis. Two alleles at a single locus with complete dominance determine colour differences (white alleles dominate over yellow). Pattern differences are slightly more complex: a single locus with three alleles (and complete dominance) or two epistatic diallelic loci can account for the variation. Relative hind-wing band-width may have a polygenic basis. Using the multi-site transplant experiment, I find that divergent selection favours transferred colour-morphs of H. cydno (yellow or white) that resemble their putative Müllerian comodels (H. eleuchia or H. sapho respectively). This provides unique experimental evidence for the benefit of Müllerian mimicry. Divergent selection generated by the two comodels may promote maintenance of the colour-pattern polymorphism in H. cydno. In support of this hypothesis, I found the frequency of yellow H. cydno correlates with the density of their respective comodels (yellow H. eleuchia or white H. sapho) at different locales. H. cydno is also polymorphic for colour and pattern where it occurs in the local absence of comodels. Polymorphism at these sites indicates that gene-flow, reduced selection, or both helps maintain colour-pattern diversity when comodels are absent. My research suggests that Müllerian mimicry can develop between a single species and more than one comodel taxon. In Western Ecuador, two Heliconius species appear to generate divergent selection favouring polymorphism in a third species H. cydno.
Spectral signatures of modulated d-wave superconducting phases
Creators: name: Baruch, Shirit
name: Orgad, Dror
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We calculate within a mean-field theory the spectral signatures of various striped d-wave superconducting phases. We consider both in-phase and anti-phase modulations of the superconducting order across a stripe boundary, and the effects of coexisting inhomogeneous orders, including spin stripes, charge stripes, and modulated d-density-wave. We find that the anti-phase modulated d-wave superconductor exhibits zero-energy spectral weight, primarily along extended arcs in momentum space. Concomitantly, a Fermi surface appears and typically includes both open segments and closed pockets. When weak homogeneous superconductivity is also present the Fermi surface collapses onto nodal points. Among them are the nodal points of the homogeneous d-wave superconductor, but others typically exist at positions which depend on the details of the modulation and the band structure. Upon increasing the amplitude of the constant component these additional points move towards the edges of the reduced Brillouin zone where they eventually disappear. The above signatures are also manifested in the density of states of the clean, and the disordered system. While the presence of coexisting orders changes some details of the spectral function, we find that the evolution of the Fermi-surface and the distribution of the low-energy spectral weight are largely unaffected by them.
description: Published version. We added an appendix including the detailed Hamiltonians, and made other minor changes
Data-mining of dislocation microstructures: concepts for coarse-graining of internal energies
Creators: name: Song, Hengxu
name: Gunkelmann, Nina
name: Po, Giacomo
name: Sandfeld, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Continuum models of dislocation plasticity require constitutive closure assumptions, e.g., by relating details of the dislocation microstructure to energy densities. Currently, there is no systematic way for deriving or extracting such information from reference simulations, such as discrete dislocation dynamics or molecular dynamics. Here, a novel data-mining approach is proposed through which energy density data from systems of discrete dislocations can be extracted. Our approach relies on a systematic and controlled coarse-graining process and thereby is consistent with the length scale of interest. For data-mining, a range of different dislocation microstructures that were generated from 2D and 3D discrete dislocation dynamics simulations, are used. The analyses of the data sets result in energy density formulations as function of various dislocation density fields. The proposed approach solves the long-standing problem of voxel-size dependent energy calculation during coarse graining of dislocation microstructures. Thus, it is crucial for any continuum dislocation dynamics simulation.
Understanding the magnetic activity of red giants
Creators: name: , Gaulme
name: Spada
name: Jackiewicz
Publisher: name: Zenodo
Year: 2021

description: According to dynamo theory, stars with convective envelopes efficiently generate surface magnetic fields (which manifest as magnetic activity: starspots, faculae, flares) when their rotation period is shorter than their convective turnover time. Most red giants (RG), having undergone significant spin down while expanding, have slow rotation and no spots. However, Gaulme et al. (2020) showed that out of a sample of 4500 RGs observed by the NASA Kepler space telescope, about 8% display spots. They also detected solar-like oscillations in 99.3% of the sample, and determined the evolutionary stage (hydrogen-shell or helium-core burning) of 76% of them. From complementary high-resolution spectroscopic observations of 85 targets, the active RGs can be categorized as: 1) RGs in close binary systems spun up by tidal forces; 2) solar-mass RGs that gained angular momentum by engulfing stellar or substellar companions; 3) intermediate-mass RGs that were fast rotators in the late main sequence before entering the red giant phase.
description: There is a haiku (1mi presentation for the Coolstars meeting) and a poster
Unsupervised Feature Learning for Event Data: Direct vs Inverse Problem Formulation
Creators: name: Kostadinov, Dimche
name: Scaramuzza, Davide
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Event-based cameras record an asynchronous stream of per-pixel brightness changes. As such, they have numerous advantages over the standard frame-based cameras, including high temporal resolution, high dynamic range, and no motion blur. Due to the asynchronous nature, efficient learning of compact representation for event data is challenging. While it remains not explored the extent to which the spatial and temporal event "information" is useful for pattern recognition tasks. In this paper, we focus on single-layer architectures. We analyze the performance of two general problem formulations: the direct and the inverse, for unsupervised feature learning from local event data (local volumes of events described in space-time). We identify and show the main advantages of each approach. Theoretically, we analyze guarantees for an optimal solution, possibility for asynchronous, parallel parameter update, and the computational complexity. We present numerical experiments for object recognition. We evaluate the solution under the direct and the inverse problem and give a comparison with the state-of-the-art methods. Our empirical results highlight the advantages of both approaches for representation learning from event data. We show improvements of up to 9 % in the recognition accuracy compared to the state-of-the-art methods from the same class of methods.
Observational characteristics of dense cores with deeply embedded young protostars
Creators: name: Stamatellos, D.
name: Whitworth, A. P.
name: Goodwin, S. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Class 0 objects, which are thought to be the youngest protostars, are identified in terms of NIR or radio emission and/or the presence of molecular outflows. We present combined hydrodynamic and radiative transfer simulations of the collapse of a star-forming molecular core, which suggest two criteria for identifying dense cores with deeply embedded very young protostars that may not be observable in the NIR or radio with current telescopes. We find that cores with protostars are relatively warm (T>15K) with their SEDs peaking at wavelengths <170 micron, and they tend to appear circular.
description: Accepted in the 'Astronomical Notes' for the special issue with the proceedings of the "Ultra low-mass star formation and evolution" workshop
pyUPMASK: an improved unsupervised clustering algorithm
Creators: name: Pera, M. S.
name: Perren, G. I.
name: Moitinho, A.
name: Navone, H. D.
name: Vazquez, R. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims. We present pyUPMASK, an unsupervised clustering method for stellar clusters that builds upon the original UPMASK package. Its general approach makes it plausible to be applied to analyses that deal with binary classes of any kind, as long as the fundamental hypotheses are met. The code is written entirely in Python and is made available through a public repository. Methods.The core of the algorithm follows the method developed in UPMASK but introducing several key enhancements. These enhancements not only make pyUPMASK more general, they also improve its performance considerably. Results. We thoroughly tested the performance of pyUPMASK on 600 synthetic clusters, affected by varying degrees of contamination by field stars. To assess the performance we employed six different statistical metrics that measure the accuracy of probabilistic classification. Conclusions. Our results show that pyUPMASK is better performant than UPMASK for every statistical performance metric, while still managing to be many times faster.
Analysis of the Scalability of a Deep-Learning Network for Steganography "Into the Wild"
Creators: name: Ruiz, Hugo
name: Chaumont, Marc
name: Yedroudj, Mehdi
name: Amara, Ahmed Oulad
name: Comby, Frédéric
name: Subsol, Gérard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Since the emergence of deep learning and its adoption in steganalysis fields, most of the reference articles kept using small to medium size CNN, and learn them on relatively small databases. Therefore, benchmarks and comparisons between different deep learning-based steganalysis algorithms, more precisely CNNs, are thus made on small to medium databases. This is performed without knowing: 1. if the ranking, with a criterion such as accuracy, is always the same when the database is larger, 2. if the efficiency of CNNs will collapse or not if the training database is a multiple of magnitude larger, 3. the minimum size required for a database or a CNN, in order to obtain a better result than a random guesser. In this paper, after a solid discussion related to the observed behaviour of CNNs as a function of their sizes and the database size, we confirm that the error's power-law also stands in steganalysis, and this in a border case, i.e. with a medium-size network, on a big, constrained and very diverse database.
description: Proceeding of the 25th International Conference on Pattern Recognition, ICPR'2021, Worshop on MultiMedia FORensics in the WILD, MMForWILD'2021, Lecture Notes in Computer Science, LNCS, Springer, Virtual Conference due to Covid (formerly Milan, Italy), January 10-15, 2021, 14 pages, https://iplab.dmi.unict.it/mmforwild/. Also look at the associated video (youtube)
Beschluss der STIKO zur 15. Aktualisierung der COVID-19-Impfempfehlung
Creators: name: Ständige Impfkommission (STIKO)
Publisher: name: Robert Koch-Institut
Year: 2021
Subjects: subject: STIKO
subject: Indikationsimpfempfehlung
subject: COVID-19
subject: Kinder
subject: mRNA-Impfstoff
subject: 610 Medizin und Gesundheit

description: Die STIKO empfiehlt in der 15. Aktualisierung der COVID-19-Impfempfehluing Kindern im Alter von 5 – 11 Jahren mit Vorer¬krankungen aufgrund des erhöhten Risikos für einen schweren COVID-19-Verlauf eine Grundimmunisierung mit 2 Impfstoffdosen des mRNA-Impfstoffs Comirnaty in altersge¬mäß zugelassener Formulierung. Zusätzlich wird die Impfung 5 – 11-Jährigen empfohlen, in deren Umfeld sich Personen mit hohem Risiko für einen schweren COVID-19-Verlauf befinden, die selbst nicht geimpft werden können oder bei denen der begründete Verdacht besteht, dass die Impfung nicht zu einem ausreichenden Schutz führt. Die COVID-19-Impfung kann auch bei 5 – 11-Jährigen ohne Vorerkrankungen bei individuellem Wunsch von Kindern und Eltern bzw. Sorgeberechtigten nach ärztlicher Aufklärung erfolgen.
Spatial Resolution Enhancement of Oversampled Images Using Regression Decomposition and Synthesis
Creators: name: Chen, Hsien-Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: A new statistical model designed for regression analysis with a sparse design matrix is proposed. This new model utilizes the positions of the limited non-zero elements in the design matrix to decompose the regression model into sub-regression models. Statistical inferences are further made on the values of these limited non-zero elements to provide a reference for synthesizing these sub-regression models. With this concept of the regression decomposition and synthesis, the information on the structure of the design matrix can be incorporated into the regression analysis to provide a more reliable estimation. The proposed model is then applied to resolve the spatial resolution enhancement problem for spatially oversampled images. To systematically evaluate the performance of the proposed model in enhancing the spatial resolution, the proposed approach is applied to the oversampled images that are reproduced via random field simulations. These application results based on different generated scenarios then conclude the effectiveness and the feasibility of the proposed approach in enhancing the spatial resolution of spatially oversampled images.
Termination of (many) 4-dimensional log flips
Creators: name: Alexeev, Valery
name: Hacon, Christopher
name: Kawamata, Yujiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E30

description: We prove that any sequence of 4-dimensional log flips that begins with a klt pair (X,D) such that -(K+D) is numerically equivalent to an effective divisor, terminates. This implies termination of flips that begin with a log Fano pair and termination of flips in a relative birational setting. We also prove termination of directed flips with big K+D. As a consequence, we prove existence of minimal models of 4-dimensional dlt pairs of general type, existence of 5-dimensional log flips, and rationality of Kodaira energy in dimension 4.
description: 13 pages; a minor change in the proof of Thm.4.3
Macroscopic Einstein-Podolsky-Rosen pairs in superconducting circuits
Creators: name: Wei, L. F.
name: Liu, Yu-xi
name: Storcz, Markus J.
name: Nori, Franco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose an efficient approach to prepare Einstein-Podolsky-Rosen (EPR) pairs in currently existing Josephson nanocircuits with capacitive couplings. In these fixed coupling circuits, two-qubit logic gates could be easily implemented while, strictly speaking, single-qubit gates cannot be easily realized. For a known two-qubit state, conditional single-qubit operation could still be designed to evolve only the selected qubit and keep the other qubit unchanged; the rotation of the selected qubit depends on the state of the other one. These conditional single-qubit operations allow to deterministically generate the well-known Einstein-Podolsky-Rosen pairs, represented by EPR-Bell (or Bell) states. Quantum-state tomography is further proposed to experimentally confirm the generation of these states. The decays of the prepared EPR pairs are analyzed using numerical simulations. Possible application of the generated EPR pairs to test Bell's Inequality is also discussed.
description: small changes in text
Mr Morlanes, how can Nobel Prize laser technology make machines precise to within a nanometre on production lines?
Creators: name: Morlanes, Tomás
name: Barnstedt, Corinna
Publisher: name: Zenodo
Year: 2019
Subjects: linear and angular position encoders
precision
nanostructuring

description: Tomás Morlanes is an optical technology manager at Fagor Automation in Spain. His job is to ensure that the automated systems developed, like linear encoders, measure movements correctly. Within the EU-funded project Laser4Surf he aims to improve the precision of linear encoders with the help of ultra-short pulse laser technology.
description: https://www.laser4surf.eu/mr-morlanes-how-can-nobel-prize-laser-technology-make-machines-precise-to-within-a-nanometre-on-production-lines/
Production of Heavy Elements During the Explosion of a Low-Mass Neutron Star in a Close Binary
Creators: name: Panov, I. V.
name: Yudin, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The nucleosynthesis of heavy elements in the scenario for the evolution of a close binary of neutron stars differing greatly in mass is considered. In contrast to the scenario for the merger of two neutron stars of comparable masses considered repeatedly in the literature, the evolution of such a binary at the final stage consists in a rapid mass transfer to the more massive star and an explosive disruption of the low-mass component. We provide the details of the explosion and calculate the abundances of the heavy elements produced in this process for various initial conditions.
description: 17 pages, 6 figs, 1 table
Waveform-Selective Mantle Cloaks for Intelligent Antennas
Creators: name: Vellucci, Stefano
name: Monti, Alessio
name: Barbuto, Mirko
name: Toscano, Alessandro
name: Bilotti, Filiberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We present the design of an innovative wire antenna able to automatically hide or reveal its presence depending on the waveform of the received/transmitted signal. This unconventional behavior is achieved through the use of a novel waveform-selective cloaking metasurface exploiting a meander-like unit cell loaded with a lumped-element circuit capable to engineer the scattering of the antenna depending on the waveform of the impinging signal. Due to the time-domain response of the lumped-element circuit, the antenna is able switching its scattering behavior when interacts with either a pulsed wave (PW) or a continuous wave (CW) signal. The proposed configuration paves the way to a new generation of cloaking devices for intelligent antenna systems, extending the concept of antenna as a device capable to sense the external environment and change its electromagnetic behavior accordingly.
Semantic elicitation: Bare noun interpretation
Creators: name: Kipkoech, Linus
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: sgc

description: One .mp4 file and one .pdf file. Elicitation of epistemic indefinites in various contexts. Elicitation of singular count nouns and their various interpretations (e.g. generic, existential, definite).
Swift observations of GRB050712
Creators: name: De Pasquale, M.
name: Grupe, D.
name: Poole, T. S.
name: Breeveld, A. A.
name: Zane, S.
name: Rosen, S. R.
name: Page, M. J.
name: Mason, K. O.
name: Burrows, D. N.
name: Krimm., H. A.
name: Gehrels, N.
name: Nousek, J. A.
name: Roming, P. W. A.
name: Kobayashi, S.
name: Zhang, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of X-ray and optical observations of GRB050712 performed by Swift. The X-ray lightcurve of this burst exhibits episodes of flares in the first 1000s, the same epoch at which the UVOT detected an optical counterpart. A shallow X-ray decay, with a decay slope of -0.73, followed and lasted ~70ks. This behaviour can be explained in terms of activity of GRB 'inner engine', with the possibility of that the last flare is caused by the interaction of the ejecta with the surrounding medium. We also find interesting spectral parameters for the X-ray emission. In particular, data suggest the presence of an intrinsic absorption in the first 1000s, which can be explained if circumbust medium clouds lie along the line of sight.
description: 13 pages, 5 figures. Accepted for publication by MNRAS
The one-sided kissing number in four dimensions
Creators: name: Musin, Oleg R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let H be a closed half-space of n-dimensional Euclidean space. Suppose S is a unit sphere in H that touches the supporting hyperplane of H. The one-sided kissing number B(n) is the maximal number of unit nonoverlapping spheres in H that can touch S. Clearly, B(2)=4. It was proved that B(3)=9. Recently, K. Bezdek proved that B(4)=18 or 19, and conjectured that B(4)=18. We present a proof of this conjecture.
Forbidden gap argument for phase transitions proved by means of chessboard estimates
Creators: name: Biskup, Marek
name: Kotecky, Roman
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82B20; 82B26

description: Chessboard estimates are one of the standard tools for proving phase coexistence in spin systems of physical interest. In this note we show that the method not only produces a point in the phase diagram where more than one Gibbs states coexist, but that it can also be used to rule out the existence of shift-ergodic states that differ significantly from those proved to exist. For models depending on a parameter (say, the temperature), this shows that the values of the conjugate thermodynamic quantity (the energy) inside the "transitional gap" are forbidden in all shift-ergodic Gibbs states. We point out several models where our result provides useful additional information concerning the set of possible thermodynamic equilibria.
description: 26 pages
Level Density in the Complex Scaling Method
Creators: name: Suzuki, Ryusuke
name: Myo, Takayuki
name: Kato, Kiyoshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is shown that the continuum level density (CLD) at unbound energies can be calculated with the complex scaling method (CSM), in which the energy spectra of bound states, resonances and continuum states are obtained in terms of $L^2$ basis functions. In this method, the extended completeness relation is applied to the calculation of the Green functions, and the continuum-state part is approximately expressed in terms of discretized complex scaled continuum solutions. The obtained result is compared with the CLD calculated exactly from the scattering phase shift. The discretization in the CSM is shown to give a very good description of continuum states. We discuss how the scattering phase shifts can inversely be calculated from the discretized CLD using a basis function technique in the CSM.
description: 14 pages, 9 figures, To be published in Progress of Theoretical Physics
Self-assembly in rod/coil block copolymers: Degenerate behavior under nonconfinement
Creators: name: Han, X. -G.
name: Liang, N.
name: Zhang, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The self-assembly of block copolymers containing rigid blocks have received abiding attention due to its rich phase behavior and potential for use in a variety of applications. In this work, under asymmetric interactions between rod/coil components, the self-assembly of coil/coil/rod ABC triblock copolymers is studied using self-consistent field of lattice model. In addition to micelles, centrosymmetric lamellae (CSLM), lamellae, perforated lamellae, strips and gyroids, non-centrosymmetric (NCSLM) lamellae and wavy morphologies are observed as stable phases. The phase diagram of interaction between rod and coil components versus the rod fraction is constructed given a fixed interaction between coil components. For intermediate rod fraction, degenerate behavior is observed. NCSLM and CSLM are degenerate structures. It is found that the entropy of chain conformation plays an important role for this rich behavior. A mechanism of the degenerate behavior is proposed in coil/rod block copolymers under noncofinement. This study provides some new insights into the degenerate behavior of block compolymers, which can offer a theoretical reference for related experiments.
description: 9 pages, 4 figures
On the Torque Reversals of Accreting Neutron Stars
Creators: name: Ertan, Unal
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have extended the analytical model proposed earlier to estimate the inner disk radius of accreting neutron stars in the strong-propeller (SP) phase, and the conditions for the transitions between the strong and weak propeller (WP) phases (Ertan 2017, 2018) to the WP (accretion with spin-down) and the spin-up (SU) phases, and the torque reversals during the WP/SU transitions. The model can account for some basic observed properties of these systems that are not expected in conventional models: (1) accretion on to the star at low X-ray luminosities and the transitions to the SP phase (no accretion) at critical accretion rates much lower than the rate required for the spin-up/spin-down transition, (2) ongoing accretion throughout a large range of accretion rates while the source is spinning down (WP phase), and (3) transitions between the spin-up and spin-down phases with comparable torque magnitudes, without substantial changes in the mass-flow rate. Our results indicate that the magnitudes of the torques on either side of the torque reversal have a ratio similar for different systems independently of their spin periods, magnetic dipole moments and accretion rates during the transitions. Estimated torque reversal properties in our model are in agreement with the observed torque reversals of 4U 1626--67.
description: 9 pages, 15 figures, accepted for publication in MNRAS
Temporal Evolution of Prompt GRB Polarization
Creators: name: Gill, Ramandeep
name: Granot, Jonathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The dominant radiation mechanism that produces the prompt emission in gamma-ray bursts (GRBs) remains a major open question. Spectral information alone has proven insufficient in elucidating its nature. Time-resolved linear polarization has the potential to distinguish between popular emission mechanisms, e.g., synchrotron radiation from electrons with a power-law energy distribution or inverse Compton scattering of soft seed thermal photons, which can yield the typical GRB spectrum but produce different levels of polarization. Furthermore, it can be used to learn about the outflow's composition (i.e. whether it is kinetic-energy-dominated or Poynting-flux-dominated) and angular structure. For synchrotron emission it is a powerful probe of the magnetic field geometry. Here we consider synchrotron emission from a thin ultrarelativistic outflow, with bulk Lorentz factor $Γ(R)=Γ_0(R/R_0)^{-m/2}\gg1$, that radiates a Band-function spectrum in a single (multiple) pulse(s) over a range of radii, $R_0\leq R\leq R_0+ΔR$. Pulse profiles and polarization evolution at a given energy are presented for a coasting ($m=0$) and accelerating ($m=-2/3$) thin spherical shell and for an off-axis top-hat jet with sharp as well as smooth edges in emissivity. Four different magnetic field configurations are considered, such as a locally ordered field coherent over angular scales $θ_B\gtrsim1/Γ$, a tangled field ($B_\perp$) in the plane transverse to the radial direction, an ordered field ($B_\parallel$) aligned in the radial direction, and a globally ordered toroidal field ($B_{\rm tor}$). All field configurations produce distinct polarization evolution with single (for $B_\perp$ and $B_\parallel$) and double (for $B_{\rm tor}$) $90^\circ$ changes in the polarization position angle.
description: 20 pages, 11 figures; added two more panels to Fig. 6 and main points of paper to the summary section; Accepted to MNRAS
Additional file 1 of The integration of quality improvement and implementation science methods and frameworks in healthcare: a systematic review
Creators: name: Bierbaum, Mia
name: Best, Stephanie
name: Williams, Sharon
name: Fehlberg, Zoe
name: Hillier, Susan
name: Ellis, Louise A.
name: Goodrich, Angie
name: Padbury, Robert
name: Hibbert, Peter
Publisher: name: figshare
Year: 2025
Subjects: Space Science
Medicine
Biological Sciences not elsewhere classified
Cancer
Science Policy

description: Supplementary Material 1. PRISMA 2020 checklist.
A Comprehensive Survey on Word Representation Models: From Classical to State-Of-The-Art Word Representation Language Models
Creators: name: Naseem, Usman
name: Razzak, Imran
name: Khan, Shah Khalid
name: Prasad, Mukesh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Word representation has always been an important research area in the history of natural language processing (NLP). Understanding such complex text data is imperative, given that it is rich in information and can be used widely across various applications. In this survey, we explore different word representation models and its power of expression, from the classical to modern-day state-of-the-art word representation language models (LMS). We describe a variety of text representation methods, and model designs have blossomed in the context of NLP, including SOTA LMs. These models can transform large volumes of text into effective vector representations capturing the same semantic information. Further, such representations can be utilized by various machine learning (ML) algorithms for a variety of NLP related tasks. In the end, this survey briefly discusses the commonly used ML and DL based classifiers, evaluation metrics and the applications of these word embeddings in different NLP tasks.
Two-fluid simulations of Rayleigh-Taylor instability in a magnetized solar prominence thread II. Effects of collisionality
Creators: name: Braileanu, B. Popescu
name: Lukin, V. S.
name: Khomenko, E.
name: de Vicente, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this work, we explore the dynamical impacts and observable signatures of two-fluid effects in the parameter regimes when ion-neutral collisions do not fully couple the neutral and charged fluids. The purpose of this study is to deepen our understanding of the RTI and the effects of the partial ionization on the development of RTI using non-linear two-fluid numerical simulations. Our two-fluid model takes into account neutral viscosity, thermal conductivity, and collisional interaction between neutrals and charges: ionization/recombination, energy and momentum transfer, and frictional heating. In this paper II, the sensitivity of the RTI dynamics to collisional effects for different magnetic field configurations supporting the prominence thread is explored. This is done by artificially varying, or eliminating, effects of both elastic and inelastic collisions by modifying the model equations. We find that ionization and recombination reactions between ionized and neutral fluids, if in equilibrium prior to the onset of the instability, do not substantially impact the development of the primary RTI. However, such reactions can impact development of secondary structures during mixing of the cold prominence and hotter surrounding coronal material. We find that collisionality within and between ionized and neutral particle populations play an important role in both linear and non-linear development of RTI, with ion-neutral collision frequency as the primary determining factor in development or damping of small scale structures. We also observe that degree and signatures of flow decoupling between ion and neutral fluids can depend both on the inter-particle collisionality and the magnetic field configuration of the prominence thread.
Exchange and correlation effects on the plasmon dispersions and the Coulomb drag in low-density electron bilayers
Creators: name: Badalyan, S. M.
name: Kim, C. S.
name: Vignale, G.
name: Senatore, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effect of exchange and correlation (xc) on the plasmon spectrum and the Coulomb drag between spatially separated low-density two-dimensional electron layers. We adopt a new approach, which employs dynamic xc kernels in the calculation of the bi-layer plasmon spectra and of the plasmon-mediated drag, and static many-body local field factors in the calculation of the particle-hole contribution to the drag. The spectrum of bi-layer plasmons and the drag resistivity are calculated in a broad range of temperatures taking into account both intra- and inter-layer correlation effects. We observe that both plasmon modes are strongly affected by xc corrections. After the inclusion of the complex dynamic xc kernels, a decrease of the electron density induces shifts of the plasmon branches in opposite directions. And this is in stark contrast to the tendency obtained within the RPA that both optical and acoustical plasmons move away from the boundary of the particle-hole continuum with a decrease in the electron density. We find that the introduction of xc corrections results in a significant enhancement of the transresistivity and qualitative changes in its temperature dependence. In particular, the large high-temperature plasmon peak that is present in the random phase approximation is found to disappear when the xc corrections are included. Our numerical results at low temperatures are in good agreement with the results of recent experiments by M. Kellogg {\it et al.}, Solid State Commun. \textbf{123}, 515 (2002).
description: 28 pages, 15 figures
Anchored Critical Percolation Clusters and 2-D Electrostatics
Creators: name: Kleban, P.
name: Simmons, J. J. H.
name: Ziff, R. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider the densities of clusters, at the percolation point of a two-dimensional system, which are anchored in various ways to an edge. These quantities are calculated by use of conformal field theory and computer simulations. We find that they are given by simple functions of the potentials of 2-D electrostatic dipoles, and that a kind of superposition {\it cum} factorization applies. Our results broaden this connection, already known from previous studies, and we present evidence that it is more generally valid. An exact result similar to the Kirkwood superposition approximation emerges.
description: 4 pages, 1 (color) figure. More numerics, minor corrections, references added
A Program for Integrating Math and Physics Internet-Based Teaching Tools into Large University Physics Courses
Creators: name: Toback, David
name: Mershin, Andreas
name: Novikova, Irina
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Significant obstacles prevent large, university-level, introductory physics courses from effectively teaching problem-solving skills. We describe our program for integrating three internet-based "teaching-while-quizzing" tools to address two of these barriers: students' poor math skills and instructors' insufficient grading recourses. We outline our system of math remediation, homework and after-homework quizzes, and mini-practice exams, and demonstrate how it can be incorporated into courses with modest instructor effort.
description: This is shortened and updated version of our earlier submission physics/0408034