cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Spectroscopic Survey of Field Red Horizontal-Branch Stars
Creators: name: Afşar, Melike
name: Bozkurt, Zeynep
name: Topcu, Gamze Böcek
name: Casetti-Dinescu, Dana~I.
name: Sneden, Christopher
name: Şehitoğlu, Gizem
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A metallicity, chemical composition, and kinematic survey has been conducted for a sample of 340 candidate field red horizontal branch stars. High resolution, high signal-to-noise spectra were gathered with the McDonald Observatory 2.7m Tull and the Hobby-Eberly Telescope echelle spectrographs, and were used to determine effective temperatures, surface gravities, microturbulent velocities, [Fe/H] metallicities, and abundance ratios [X/Fe] for seven $α$ and Fe-group species. The derived temperatures and gravities confirm that at least half of the candidates are true RHB stars, with (average) parameters Teff$\sim$5000 K, log g$\sim$2.5. From the $α$ abundances alone the thin and thick Galactic populations are apparent in our sample. Space motions for 90% of the program stars were computed from Hipparcos and Gaia parallaxes and proper motions. Correlations between chemical compositions and Galactic kinematics clearly indicate the existence of both thin and thick disk RHB stars.
description: accepted for publication in AJ
Discovery of X-ray pulsations in the Be/X-ray binary IGR J06074+2205
Creators: name: Reig, P.
name: Zezas, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: IGR J06074+2205 is a poorly studied X-ray source with a Be star companion. It has been proposed to belong to the group of Be/X-ray binaries. In Be/X-ray binaries, accretion onto the neutron star occurs via the transfer of material from the Be star's circumstellar disk. Thus, in the absence of the disk, no X-ray should be detected. The main goal of this work is to study the quiescent X-ray emission of IGR J06074+2205 during a disk-loss episode. We show that at the time of the XMM-Newton observation the decretion disk around the Be star had vanished. Still, accretion appears as the source of energy that powers the high-energy radiation in IGR J06074+2205. We report the discovery of X-ray pulsations with a pulse period of 373.2 s and a pulse fraction of ~50%. The $0.4-12$ keV spectrum is well described by an absorbed power law and blackbody components with the best fitting parameters: $N_{\rm H}=(6.2\pm0.5) \times 10^{21}$ cm$^{-2}$, $kT_{\rm bb}=1.16\pm0.03$ keV, and $Γ=1.5\pm0.1$ The absorbed X-ray luminosity is $L_{\rm X}=1.4 \times 10^{34}$ erg s$^{-1}$ assuming a distance of 4.5 kpc. The detection of X-ray pulsations confirms the nature of IGR J06074+2205 as a Be/X-ray binary. We discuss various scenarios to explain the quiescent X-ray emission of this pulsar. We rule out cooling of the neutron star surface and magnetospheric emission and conclude that accretion is the most likely scenario. The origin of the accreted material remains an open question.
description: accepted for publication in A&A
Electromagnetic Pion Form Factor and Neutral Pion Decay Width
Creators: name: Roberts, Craig D.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The electromagnetic pion form factor, $F_π(q^2)$, is calculated for spacelike-$q^2$ in impulse approximation using a confining quark propagator, $S$, and a dressed quark-photon vertex, $Γ_μ$, obtained from realistic, nonperturbative Dyson-Schwinger equation studies. Good agreement with the available data is obtained for $F_π(q^2)$ and other pion observables, including the decay $π^0 \rightarrow γ\,γ$. This calculation suggests that soft, nonperturbative contributions dominate $F_π(q^2)$ at presently accessible~$q^2$.
description: 25 pages, LaTeX, elsart.sty, 5 figures, To appear in Nucl. Phys. A
Manifestly Covariant Worldline Actions from Coadjoint Orbits. Part I: Generalities and Vectorial Descriptions
Creators: name: Basile, Thomas
name: Joung, Euihun
name: Oh, TaeHwan
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive manifestly covariant actions of spinning particles starting from coadjoint orbits of isometry groups, by using Hamiltonian reductions. We show that the defining conditions of a classical Lie group can be treated as Hamiltonian constraints which generate the coadjoint orbits of another, dual, Lie group. In case of (inhomogeneous) orthogonal groups, the dual groups are (centrally-extended inhomogeneous) symplectic groups. This defines a symplectic dual pair correspondence between the coadjoint orbits of the isometry group and those of the dual Lie group, whose quantum version is the reductive dual pair correspondence à la Howe. We show explicitly how various particle species arise from the classification of coadjoint orbits of Poincaré and (A)dS symmetry. In the Poincaré case, we recover the data of the Wigner classification, which includes continuous spin particles, (spinning) tachyons and null particles with vanishing momenta, besides the usual massive and massless spinning particles. In (A)dS case, our classification results are not only consistent with the pattern of the corresponding unitary irreducible representations observed in the literature, but also contain novel information. In dS, we find the presence of partially massless spinning particles, but continuous spin particles, spinning tachyons and null particles are absent. The AdS case shows the largest diversity of particle species. It has all particles species of Poincaré symmetry except for the null particle, but allows in addition various exotic entities such as one parameter extension of continuous particles and conformal particles living on the boundary of AdS. Notably, we also find a large class of particles living in "bitemporal" AdS space, including ones where mass and spin play an interchanged role. We also discuss the relative inclusion structure of the corresponding orbits.
description: 89 pages. A few references are added. Other minor revisions are made
Nuclear Bar, Star Formation and Gas Fueling in the Active Galaxy NGC 4303
Creators: name: Colina, L.
name: Wada, K.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A combination of Hubble Space Telescope (HST) WFPC2 and NICMOS images are used to investigate the gas/dust and stellar structure inside the central 300 pc of the nearby active galaxy NGC 4303. The NICMOS H-band (F160W) image reveals a bright core and a nuclear elongated bar-like structure of 250 pc in diameter. The bar is centered on the bright core, and its major axis is oriented in proyection along the spin axis of the nuclear gaseous rotating disk recently detected (Colina & Arribas 1999). The V-H (F606W - F160W) image reveals a complex gas/dust distribution with a two-arm spiral structure of about 225 pc in radius. The southwestern arm is traced by young star-forming knots while the northeastern arm is detected by the presence of dust lanes. These spirals do not have a smooth structure but rather they are made of smaller flocculent spirals or filament-like structures. The magnitudes and colors of the star-forming knots are typical of clusters of young stars with masses of 0.5 to 1 x $10^5 M_{solar}, and ages of 5 to 25 million years. The overall structure of the nuclear spirals as well as the size, number and masses of the star-forming knots are explained in the context of a massive gaseous nuclear disk subject to self-gravitational instabilities and to the gravitational field created by the nuclear bar. According to the model, the gaseous disk has a mass of about 5 x 10^7 M_{solar} inside a radius of 400 pc, the bar has a radius of 150 pc and a pattern speed of about 0.5 Myr^{-1}, and the average mass accretion rate into the core (R < 8 pc) is about 0.01 M_{solar}$ yr^{-1} for about 80 Myr.
description: ApJ, in press (February 1, 2000)
Hervé Latapie, auteur, activiste gay, Blog Mediapart
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Pièce jointe : "Nouveau millénaire, Défis libertaires : sexe, pouvoir et la politique de l'identité", entretien de Michel Foucault avec B. Gallagher et A. Wilson, Toronto, juin 1982 publié dans The Advocate, no 400, 7 août 1984, pp. 26-30 et 58.
description: 1 fichier (22 pages). Autres destinataires : Caroline Petit, Richard Cross, Éric Caumes
description: created: start=2019-05-13;end=2019-06-04
Effects of speed-control measures on the safety of unsignalized midblock street crossings in China
Creators: name: Wang, Chao
name: Ye, Zhirui
name: Wang, Xinyi
name: Li, Wenting
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Space Science
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Plant Biology

description: Objective: The primary objective of this study was to evaluate the effects of different speed-control measures on the safety of unsignalized midblock street crossings. Methods: In China, it is quite difficult to obtain traffic crash and conflict data for pedestrians using such crossings, mainly due to the lack of traffic data management and organizational issues. In light of this, the proposed method did not rely on such data, but considered vehicle speed, which is a leading contributing factor of pedestrian safety at mid blocks. To evaluate the speed reduction effects at different locations, the research team utilized the following methods in this study: (1) testing speed differences—on the basis of the collected data, statistical analysis is conducted to test the speed differences between upstream and crosswalk, upstream and downstream, and downstream and crosswalk; and (2) mean distribution deviation—this value is calculated by taking the difference in cumulative speed distributions for the two different samples just mentioned. In order to better understand the variation of speed reduction effects at different distances from speed-control facilities, data were collected from six types of speed-control measures with a visual range of 60 m. Results: The results showed that speed humps, transverse rumble strips, and speed bumps were effective in reducing vehicle speeds. Among them speed humps performed the best, with reductions of 21.1% and 20.0% from upstream location (25.01 km/h) and downstream location (24.66 km/h) to pedestrian crosswalk (19.73 km/h), respectively. By contrast, the speed reduction effects were minimal for stop and yield signs, flashing yellow lights, and crossings without treatment. Conclusions: Consequently, in order to reduce vehicle speeds and improve pedestrian safety at mid blocks, several speed-control measures such as speed humps, speed bumps, and transverse rumble strips are recommended to be deployed in the vicinity of pedestrian crosswalks.
MDS, Hermitian Almost MDS, and Gilbert-Varshamov Quantum Codes from Generalized Monomial-Cartesian Codes
Creators: name: Barbero-Lucas, Beatriz
name: Hernando, Fernando
name: Martín-Cruz, Helena
name: McGuire, Gary
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We construct new stabilizer quantum error-correcting codes from generalized monomial-Cartesian codes. Our construction uses an explicitly defined twist vector, and we present formulas for the minimum distance and dimension. Generalized monomial-Cartesian codes arise from polynomials in $m$ variables. When $m=1$ our codes are MDS, and when $m=2$ and our lower bound for the minimum distance is $3$ the codes are at least Hermitian Almost MDS. For an infinite family of parameters when $m=2$ we prove that our codes beat the Gilbert-Varshamov bound. We also present many examples of our codes that are better than any known code in the literature.
Shortest paths search method based on the projective description of unweighted mixed graphs
Creators: name: Melent'ev, V. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.2.2; F.1.3
subject: 52B05

description: The method is based on the preliminary transformation of the traditionally used matrices or adjacency lists in the graph theory into refined projections free from redundant information, and their subsequent use in constructing shortest paths. Unlike adjacency matrices and lists based on enumerating binary adjacency relations, the refined projection is based on enumerating more complex relations: simple paths from a given graph vertex that are shortest. The preliminary acquisition of such projections reduces the algorithmic complexity of applications using them and improves their volumetric and real-time characteristics to linear ones for a pair of vertices. The class of graphs considered is extended to mixed graphs.
description: 7 pages, in Russian language, 1 figures, 2 table
Testing the Vacuum Oscillation and the MSW Solutions of the Solar Neutrino Problem
Creators: name: Krastev, P. I.
name: Petcov, S. T.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Solar model independent tests of the vacuum oscillation and MSW solutions of the solar neutrino problem are considered. Detailed predictions for time (seasonal) variations of the signals in the future solar neutrino detectors (SNO, Super Kamiokande, BOREXINO, HELLAZ), if solar neutrinos take part in vacuum oscillations, are given. Results on the distortions of the spectra of boron neutrinos, and of electrons from the neutrino-electron scattering induced by boron neutrinos, in the cases of vacuum oscillations or MSW transitions are presented for a large number of values of the relevant parameters. The possibilities to distinguish between the vacuum oscillation, the MSW adiabatic, and the MSW nonadiabatic transitions (solutions) in the future solar neutrino experiments are discussed.
description: 26 p + 7 figures (available upon request from krastev@physics.unc.edu), SISSA 41/94/EP and IFP-295-UNC
A New Look At Carbon Abundances In Planetary Nebulae. IV. Implications For Stellar Nucleosynthesis
Creators: name: Henry, R. B. C.
name: Kwitter, K. B.
name: Bates, J. A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper is the fourth and final report on a project designed to study carbon abundances in a sample of planetary nebulae representing a broad range in progenitor mass and metallicity. We present newly acquired optical spectrophotometric data for three Galactic planetary nebulae IC 418, NGC 2392, and NGC 3242 and combine them with UV data from the IUE Final Archive for identical positions in each nebula to determine accurate abundances of He, C, N, O, and Ne at one or more locations in each object. We then collect abundances of these elements for the entire sample and compare them with theoretical predictions of planetary nebula abundances from a grid of intermediate mass star models. We find some consistency between observations and theory, lending modest support to our current understanding of nucleosynthesis in stars below 8 M_o in birth mass. Overall, we believe that observed abundances agree with theoretical predictions to well within an order of magnitude but probably not better than within a factor of 2 or 3. But even this level of consistency between observation and theory enhances the validity of published intermediate-mass stellar yields of carbon and nitrogen in the study of the abundance evolution of these elements.
description: 41 pages, 11 figures. Accepted for publication in the Astrophysical Journal
Bulk and surface characterization of In$_2$O$_3$(001) single crystals
Creators: name: Hagleitner, Daniel R.
name: Jacobson, Peter
name: Blomberg, Sara
name: Schulte, Karina
name: Lundgren, Edvin
name: Kubicek, Markus
name: Fleig, Jürgen
name: Kubel, Frank
name: Puls, Christoph
name: Limbeck, Andreas
name: Hutter, Herbert
name: Boatner, Lynn A.
name: Schmid, Michael
name: Diebold, Ulrike
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A comprehensive bulk and surface investigation of high-quality In$_2$O$_3$(001) single crystals is reported. The transparent-yellow, cube-shaped single crystals were grown using the flux method. Inductively coupled plasma mass spectrometry (ICP-MS) reveals small residues of Pb, Mg, and Pt in the crystals. Four-point-probe measurements show a resistivity of 2.0 $\pm$ 0.5 $\times$ 10$^5$ Ω cm, which translates into a carrier concentration of $\approx$10$^{12}$ cm$^{-3}$. The results from x-ray diffraction (XRD) measurements revise the lattice constant to 10.1150(5) Å from the previously accepted value of 10.117 Å. Scanning tunneling microscopy (STM) images of a reduced (sputtered/annealed) and oxidized (exposure to atomic oxygen at 300 °C) surface show a step height of 5 Å, which indicates a preference for one type of surface termination. The surfaces stay flat without any evidence for macroscopic faceting under any of these preparation conditions. A combination of low-energy ion scattering (LEIS) and atomically resolved STM indicates an indium-terminated surface with small islands of 2.5 Å height under reducing conditions, with a surface structure corresponding to a strongly distorted indium lattice. Scanning tunneling spectroscopy (STS) reveals a pronounced surface state at the Fermi level ($E_F$). Photoelectron spectroscopy (PES) shows additional, deep-lying band gap states, which can be removed by exposure of the surface to atomic oxygen. Oxidation also results in a shoulder at the O 1s core level at a higher binding energy, possibly indicative of a surface peroxide species. A downward band bending of 0.4 eV is observed for the reduced surface, while the band bending of the oxidized surface is of the order of 0.1 eV or less.
Paltothyrens tarsatus Fab.
Creators: name: Forel, A.
Publisher: name: Zenodo
Year: 1894
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Paltothyrens
Paltothyrens tarsatus

description: Paltothyrens tarsatus Fab.
Delagoa (Dr. Liengme).
description: Published as part of Forel, A., 1894, Abessinische und andere afrikanische Ameisen, gesammelt von Herrn Ingenieur Alfred Ilg, von Herrn Dr. Liengme, von Herrn Pfarrer Missionar P. Berthoud, Herrn Dr. Arth. Müller, etc., pp. 64-100 in Mitteilungen der Schweizerischen Entomologischen Gesellschaft 9 on page 74, DOI: 10.5281/zenodo.14259
Hubble Space Telescope Observations of the Associated Absorption Systems in Q0122+0338
Creators: name: Papovich, Casey
name: Norman, Colin A.
name: Bowen, David V.
name: Heckman, Tim
name: Savaglio, Sandra
name: Koekemoer, Anton M.
name: Blades, J. Chris
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied a spectrum of Q0122+0338 (z = 1.202) obtained by the FOS on board HST. We present the analysis of three associated absorption systems at z = 1.207, 1.199 and 1.166. The most complex of these at z = 1.207 shows strong absorption from the highly ionized transitions of Lyman alpha, Lyman beta, N V, O VI, Si III, Si IV, and possibly P V. We derive minimal ionic column densities and compare them with those predicted from numerical photoionization models. We find that conditions in the absorbing gas are consistent with an absorber with metallicity twice solar and a total absorbing column density of N(H) = 2*10^19 cm^2. The kinematics of the absorption lines in the z = 1.207 system suggest that a correlation exists between the relative velocity and the creation ionization potential energy for each transition. This is evidence that a complex, multi-component absorber exists. Althought the location of the absorber is uncertain, we consider the origin of this absorption system using the available data and discuss how the high-ionization, and high-metallicity indicate that the absorber may be intrinsic to Q0122+0338.
description: 16 pages, 5 figures, uses emulateapj.sty, accepted for publication in ApJ
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Cart. 188 (11 H 73), f. 0076r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0076r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0076r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
High-order above-threshold photoemission from nanotips controlled with two-color laser fields
Creators: name: Seiffert, Lennart
name: Paschen, Timo
name: Hommelhoff, Peter
name: Fennel, Thomas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the process of phase-controlled high-order above-threshold photoemission from sharp metallic nanotips under bichromatic laser fields. Experimental photoelectron spectra resulting from two-color excitation with a moderately intense near-infrared fundamental field (1560 nm) and its weak second harmonic show a strong sensitivity on the relative phase and clear indications for a plateau-like structure that is attributed to elastic backscattering. To explore the relevant control mechanisms, characteristic features, and particular signatures from near-field inhomogeneity, we performed systematic quantum simulations employing a one-dimensional nanotip model. Besides rich phase-dependent structures in the simulated above-threshold ionization (ATI) photoelectron spectra we find ponderomotive shifts as well as substantial modifications of the rescattering cutoff as function of the decay length of the near-field. To explore the quantum or classical nature of the observed features and to discriminate the two-color effects stemming from electron propagation and from the ionization rate we compare the quantum results to classical trajectory simulations. We show that signatures from direct electrons as well as the modulations in the plateau region mainly stem from control of the ionization probability, while the modulation in the cutoff region can only be explained by the impact of the two-color field on the electron trajectory. Despite the complexity of the phase-dependent features that render two-color strong-field photoemission from nanotips intriguing for sub-cycle strong-field control, our findings support that the recollision features in the cutoff region provide a robust and reliable method to calibrate the relative two-color phase.
Unifiable Supersymmetric Left-Right Model with E_6 Particle Content
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new supersymmetric gauge model is proposed with particle content chosen only from the 27 and 27* representations of E_6. The gauge symmetry SU(3) X SU(2)_L X SU(2)_R X U(1) is realized at the TeV energy scale and the gauge couplings converge to a single value at around 10^{16} GeV. A discrete Z_4 X Z_2 symmetry leads to a generalized definition of lepton number and ensures the absence of tree-level flavor-changing neutral-current interactions at the electroweak energy scale.
description: 12 pages (1 figure not included), UCRHEP-T129 (July 1994)
Dynamics of a Dark Matter Field with a Quartic Self-Interaction Potential
Creators: name: Peebles, P. J. E.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It may prove useful in cosmology to understand the behavior of the energy distribution in a scalar field that interacts only with gravity and with itself by a pure quartic potential, because if such a field existed it would be gravitationally produced, as a squeezed state, during inflation. It is known that the mean energy density in such a field after inflation varies with the expansion of the universe in the same way as radiation. I show that if the field initially is close to homogeneous, with small energy density contrast delta rho /rho and coherence length L, the energy density fluctuations behave like acoustic oscillations in an ideal relativistic fluid for a time on the order of L/|delta rho /rho|. This ends with the appearance of features that resemble shock waves, but interact in a close to elastic way that reversibly disturbs the energy distribution.
description: 7 pages, 5 figures, submitted to Phys Rev D
Van der Corput's difference theorem for amenable groups and the left regular representation
Creators: name: Farhangi, Sohail
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: Representation Theory (math.RT)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 22D40, 37A30, 22D10, 37A46, 37A25

description: We establish a connection between two variants of van der Corput's Difference Theorem (vdCDT) for countably infinite amenable groups $G$ and the ergodic hierarchy of mixing properties of a unitary representation $U$ of $G$. In particular, we show that one variant of vdCDT corresponds to subrepresentations of the left regular representation, and another variant of vdCDT corresponds to the absence of finite dimensional subrepresentations. We then obtain applications for measure preserving actions of countably infinite abelian groups.
description: 26 pages. This third edition is the journal edition. More referee comments have been incorporated, and the generality has been reduced from locally compact second countable amenable groups to countably infinite amenable groups
Intergroup Sensitivity Across Cultures: Understanding the Group Processes That Divide Us
Creators: name: Thürmer, J. Lukas
name: Reichert, Jakob
name: Wagner, Manuela A.
name: McCrea, Sean M.
Publisher: name: PsychArchives
Year: 2023
Subjects: subject: intercultural differences
subject: intergroup sensitivity effect
subject: collectivism
subject: honor culture
subject: individualism
subject: 150

description: Worldwide, we witness increased societal, hostile divides between (sub-)groups. The Intergroup Sensitivity Effect (ISE) is a process underlying group member’s defensive, even hostile, rejection of outgroup criticism. It is linked to violation of conversational norms and defending one’s social identity. Cultural dimensions (collectivism, individualism, and honor) moderate responses to reputational threats and maintaining one’s social identity, factors influencing ISE processes. Unfortunately, a systematic cultural comparison of the ISE is currently missing.
Slope of the Isgur-Wise Function from a QSSR Constraint on the $ΥB\bar{B}$ Couplings
Creators: name: Caprini, Irinel
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive optimal upper and lower bounds on the slope of the Isgur-Wise function at the zero recoil point in terms of the sum of the $ΥB\bar{B}$ couplings, estimated recently from a $QCD$ Spectral Sum Rule ($QSSR$). The problem is solved by means of a duality theorem in functional optimization. Optimal correlations between the slope and the convexity parameters of the Isgur-Wise function with the same input are also obtained.
description: pages 12, report #IFA-FT-399, August 1994
Heralding entangled optical photons from a microwave quantum processor
Creators: name: Haug, Trond Hjerpekjøn
name: Kockum, Anton Frisk
name: Van Laer, Raphaël
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Exploiting the strengths of different quantum hardware components may enhance the capabilities of emerging quantum processors. Here, we propose and analyze a quantum architecture that leverages the non-local connectivity of optics, along with the exquisite quantum control offered by superconducting microwave circuits, to produce entangled optical resource states. Contrary to previous proposals on optically distributing entanglement between superconducting microwave processors, we use squeezing between microwaves and optics to produce microwave-optical Bell pairs in a dual-rail encoding from a single microwave quantum processor. Moreover, the microwave quantum processor allows us to deterministically entangle microwave-optical Bell pairs into larger cluster states, from which entangled optical photons can be extracted through microwave measurements. Our scheme paves the way for small microwave quantum processors to create heralded entangled optical resource states for optical quantum computation, communication, and sensing using imperfect microwave-optics transducers. We expect that improved isolation of the superconducting processor from stray optical fields will allow the scheme to be demonstrated using currently available hardware.
description: 16 pages (+11 pages in supplement) 7 Figures (+4 in supplement)
Mutually Unbiased Coarse-Grained Measurements of Two or More Phase-Space Variables
Creators: name: Paul, E. C.
name: Walborn, S. P.
name: Tasca, D. S.
name: Rudnicki, Lukasz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Mutual unbiasedness of the eigenstates of phase-space operators-such as position and momentum, or their standard coarse grained versions-exists only in the limiting case of infinite squeezing. In [Phys. Rev. Lett. 120, 040403 (2018)] it was shown that mutual unbiasedness can be recovered for periodic coarse grainings of these two operators. Here we investigate mutual unbiasedness of coarse-grained measurements for more than two phase-space variables. We show that mutual unbiasedness can be recovered between periodic coarse graining of any two non-parallel phase-space operators. We illustrate these results through optics experiments using the fractional Fourier transform to prepare and measure mutually unbiased phase-space variables. The differences between two and three mutually unbiased measurements is discussed. Our results contribute to bridging the gap between continuous and discrete quantum mechanics and could be useful in quantum information protocols.
Two new eremophilane Sesquiterpenoides from Ligularia dictyoneura
Creators: name: Wang, Wenjing
name: Zhan, Rui
name: Chen, Yegao
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biochemistry
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer

description: Two new eremophilane sesquiterpenoides, 6α,9α-dihydroxyeremophilenolide (1), and 1β,10β-dihydroxyeremophilenolide (2), along with ten known eremophilane sesquiterpenoides (3–12) were isolated from the aerial parts of Ligularia dictyoneura (Franch.) Hand.-Mazz. Their structures were elucidated by means of extensive spectroscopic analysis. Compounds 3–6 were assessed for their cytotoxicity against five human cancer cell lines (HL-60, SMMC-7721, A-549, MCF-7 and SW-480), and the result showed that they had no activity.
Hard X-ray emission from elliptical galaxies and its contribution to the X-ray background
Creators: name: Di Matteo, Tiziana
name: Allen, Steven W.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the implications of the discovery of hard, power-law X-ray sources in the spectra of nearby elliptical galaxies for the origin of the X-ray background. The spectra of these sources are consistent with models of thermal bremsstrahlung emission from low radiative efficiency accretion flows around central supermassive black holes and are unique in that they approximately match that of the hard XRB. If such sources, with luminosities consistent with those observed in nearby ellipticals, are present in most early-type galaxies, then their integrated emission may contribute significantly to the XRB. These sources may also contribute to the hard source counts detected in deep X-ray surveys.
description: emulateapj.sty, to appear in ApJ Letters
Hybrid mean field and real space model for vacancy diffusion-mediated annealing of radiation defects
Creators: name: Rovelli, I.
name: Dudarev, S. L.
name: Sutton, A. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In a fusion or advanced fission reactor, high energy neutrons induce the formation of extended defect clusters in structural component materials, degrading their properties over time. Such damage can be partially recovered via a thermal annealing treatment. Therefore, for the design and operation of fusion and advanced fission nuclear energy systems it is critical to estimate and predict the annealing timescales for arbitrary configurations of defect clusters. In our earlier paper [I. Rovelli, S. L. Dudarev, and A. P. Sutton, J. Mech. Phys. Solids 103, 121 (2017)] we extended the Green function formulation by Gu, Xiang et al. [Y. Gu, Y. Xiang, S. S. Quek, and D. J. Srolovitz, J. Mech. Phys. Solids 83, 319 (2015)] for the climb of curved dislocations, to include the evaporation and growth of cavities and vacancy clusters, and take into account the effect of free surfaces. In this work, we further develop this model to include the effect of radiation defects that are below the experimental detection limit, via a mean field approach coupled with an explicit treatment of the evolution of discrete defect clusters distributed in real space. We show that randomly distributed small defects screen diffusive interactions between larger discrete clusters. The evolution of the coupled system is modelled self-consistently. We also simulate the evolution of defects in an infinite laterally extended thin film, using the Ewald summation of screened Yukawa-type diffusive propagators.
Azimuthal Angle Decorrelation in Large-rapidity Dijet Production at the Tevatron
Creators: name: Del Duca, Vittorio
name: Schmidt, Carl R.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk we examine the azimuthal angle decorrelation in dijet production at large rapidity intervals at the Tevatron as a possible signature of the BFKL evolution.
description: 10 pages (including 1 tar-compressed uuencoded figure), DESY 94-128, SCIPP 94/20
Comprehensive analysis of circRNAs and lncRNAs involvement in the development of skeletal muscle in myostatin-deficient rabbits
Creators: name: Li, Ling
name: Zhang, Ting
name: Farhab, Muhammad
name: Xia, Xiao-Xiao
name: Reza, Abu Musa Md Talimur
name: Kyaw, Paing Oo
name: Chen, Fenglei
name: Ismail, Esraa Aly Sayed
name: Xue, Gang
name: Zhong, Ping
name: Cheng, Yong
name: Yuan, Yu-Guo
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Myostatin (MSTN) protein, lncRNAs, and circRNAs regulate skeletal muscle growth and development. This work aims to compare the expression patterns of circRNAs and lncRNAs in the gluteus maximus tissue of wild-type (WT) and MSTN gene knockout (KO) rabbits. Within the gluteus maximus tissue of three WT and four MSTN KO rabbits, we analyzed the expression profiles of circRNAs and lncRNAs. After identifying the differently expressed RNAs, the biological pathways implicated were ascertained by performing enrichment analysis using the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO). We identified differences in the expression of 251 circRNAs (79 upregulated and 172 downregulated), 176 lncRNAs (53 upregulated and 123 downregulated), and 1178 mRNAs (408 upregulated and 770 downregulated) between WT and MSTN KO rabbits. Target genes were significantly enriched in pathways associated with protein synthesis and catabolism, such as oxidative phosphorylation, ubiquitin-mediated proteolysis, the FoxO signaling pathway, and the pentose phosphate pathway, as identified through GO and KEGG enrichment analyses. The constructed network indicates that a class of circRNAs and lncRNAs is engaged in MSTN-mediated regulation of skeletal muscle development. These findings provide valuable insights for innovative therapeutic, diagnostic, and preventive approaches to muscle disorders.
Peculiar Velocities and the Mean Density Parameter
Creators: name: Padilla, Nelson
name: Lambas, Diego G.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the peculiar velocity field inferred from the Mark III spirals using a new method of analysis. We estimate optimal values of Tully-Fisher scatter and zero-point offset, and we derive the 3-dimensional rms peculiar velocity ($σ_v$) of the galaxies in the samples analysed. We check our statistical analysis using mock catalogs derived from numerical simulations of CDM models considering measurement uncertainties and sampling variations. Our best determination for the observations is $σ_v= (660\pm50) km/s$. We use the linear theory relation between $σ_v$, the density parameter $Ω$, and the galaxy correlation function $ξ(r)$ to infer the quantity $β=Ω^{0.6}/b = 0.60^{+0.13}_{-0.11}$ where $b$ is the linear bias parameter of optical galaxies and the uncertainties correspond to bootstrap resampling and an estimated cosmic variance added in quadrature. Our findings are consistent with the results of cluster abundances and redshift space distortion of the two-point correlation function. These statistical measurements suggest a low value of the density parameter $Ω\sim 0.4$ if optical galaxies are not strongly biased tracers of mass.
description: Accepted for publication in MNRAS. 8 pages latex (mn.sty), including 7 figures
supplementary material from A rapid microwave synthesis of green-emissive carbon dots with solid-state fluorescence and pH-sensitive properties
Creators: name: Yu, Tingting
name: Wang, Haijiao
name: Guo, Chongzheng
name: Zhai, Yanli
name: Yang, Jianzhou
name: Yuan, Jianhui
Publisher: name: The Royal Society
Year: 2018

description: The emerging carbon quantum dots (CQDs) have been attracting significant attention for their prominent fluorescence, excellent stability and outstanding biocompatibility. Here, we report a facile one-step synthesis of highly fluorescent CQDs by using phthalic acid and triethylenediamine hexahydrate as precursors through a simply microwave-assisted method. The reaction time only need 60 s which is less time-consumed than most previous reports. The phthalic acid with a benzene ring can improve the photoluminescence properties of CQDs as it can provide a foreign sp2 conjugating units, and then finally result in long-wavelength emission. The synthesized CQDs were fully characterized by transmission electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Besides, the impacts of different freed ratio on physical and chemical properties of CQDs were investigated in detail. The prepared CQDs exhibited strong green fluorescence with a broad maximum emission wavelength. The quantum yields of the CQDs can reach 16.1% in aqueous solution and they were successfully used in cell imaging with good biocompatibility. Moreover, in solid state, the CQDs with the feed ratio of 1 : 0.5 showed a strong green–yellow fluorescence which may have great potential to fabricate optoelectronic devices device. Furthermore, the prepared CQDs also showed highly pH sensitivity and can act as a fluorescence nanosensor for pH sensing.
WWF Factsheet: Ecological Status of Alor MPA
Creators: name: M. Provost
name: Estradivari Estradivari
name: G.N. Ahmadia
Publisher: name: figshare
Year: 2018
Subjects: subject: 50202 Conservation and Biodiversity
subject: FOS: Biological sciences
subject: Marine Biology

description: Situated within the Coral Triangle’s Sunda Banda Seascape – one of the most diverse marine ecosystems in the world, this 400,000 hectare MPA is home to hundreds of ecologically important fish and coral species and is an important area that contributes significantly to livelihoods and food security both locally and at the national level. Marine protected areas are a widely used management tool throughout the world, so it is necessary to understand how and when MPAs benefit biodiversity and fisheries. As a first step, to determine ecological baselines in this area, a team made up of World Wide Fund for Nature, Wildlife Conservation Society, and the local and national government staff conducted surveys in March 2014, recording both fish sightings and the composition of benthic communities at 26 representative sites inside the Alor MPA. The March expedition gave us a starting point to answer: what is the current ecological status of fish and benthic communities within and surrounding this MPA? At each site, the percent of hard coral, soft coral, and rubble were record-ed along multiple transects. Fish abundance and biomass were also rec-orded along multiple transects for species of key herbivore and carnivore fish families. The findings from this expedition will be used in future evaluations of the Alor MPA in an effort to gauge the impact on increasing fish abundance and biodiversity, and improving ecosystem resilience.
The Ionized Gas Kinematics of the LMC-Type Galaxy NGC 1427A in the Fornax Cluster
Creators: name: Chaname, J.
name: Infante, L.
name: Reisenegger, A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: NGC 1427A is a LMC-like irregular galaxy in the Fornax cluster with an extended pattern of strong star formation around one of its edges, which is probably due to some kind of interaction with the cluster environment. We present H-alpha velocities within NGC 1427A, obtained through long-slit spectroscopy at seven different positions, chosen to fall on the brightest HII regions of the galaxy. Due to its location very near the center of the cluster this object is an excellent candidate to study the effects that the cluster environment has on gas-rich galaxies embedded in it. The rotation of NGC 1427A is modeled in two different ways. The global ionized gas kinematics is reasonably well described by solid-body rotation, although on small scales it shows a chaotic behaviour. In this simple model, the collision with a smaller member of the cluster as being responsible for the peculiar morphology of NGC 1427A is very unlikely, since the only candidate intruder falls smoothly into the general velocity pattern of the main galaxy. In a more elaborate model, for which we obtain a better solution, this object does not lie in the same plane of NGC 1427A, in which case we identify it as a satellite bound to the galaxy. These results are discussed in the context of a normal irregular versus one interacting with some external agent. Based on several arguments and quantitative estimates, we argue that the passage through the hot intracluster gas of the Fornax cluster is a very likely scenario to explain the morphological properties of NGC 1427A.
description: 31 pages, LaTeX2e, uses aas2pp4.sty and psfig.sty, including 7 Postscript figures; accepted for publication in ApJ, Vol. 530, February 2000
Tetramorium simillimum subsp. delagoense Forel, 1894, n. st.
Creators: name: Forel, A.
Publisher: name: Zenodo
Year: 1894
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Tetramorium
Tetramorium simillimum
Tetramorium simillimum nyl. r. delagoense

description: Tetramorium simillimum Nyl. R. delagoense, n. st.
[[worker]]. Lg. 2,2 — 2,5 mm. Wie simillimum i. sp., aber die Stirnleisten gerade, schwach divergirend (nicht hinten geschweift. und sich wieder etwas einander naehernd). Augen naeher den vorderen als den hinteren Ecken des Kopfes. Thorax etwas laenger und schmaeler; Metanotum mit zwei kaum zahnartigen Laengsbeulchen. Erstes Stielchenglied mit einem weniger dicken Knoten, der vorne scharf gestutzt und oberhalb der Stutzflaeche am hoechsten ist, von da ab convex nach hinten abfallend. Beide Knoten glaenzend und mit sehr seichter Sculptur; Abdomen glatt. Die Fuehlerkeule kuerzer als der Rest der Geissei (gut ebensolang bei simillimum i. sp.). Sculptur und Behaarung wie bei simillimum i. sp.; ebenso die Groesse des Kopfes relativ zum Koerper, aber etwas schlanker; Beine etwas staerker. Gelblich; Thorax und Kopf roethlichgelb (der Hinterleib somit heller).
[[queen]]. Lg. 3 — 3,4 mm. Kopf viel laenger als breit (kaum bei simillimum i. sp.). Thorax laenger und weniger hoch, hinten mit zwei breiten, stumpfen, dreieckigen Zaehnen. Erster Knoten viel duenner als beim simillimum i. sp. [[queen]], fast schuppenfoermig, duenner als beim [[worker]]. Basalflaeche des Metanotums mindestens so lang wie die abschuessige. Metasternalzaehne etwas laenger als die oberen. Sculptur, Behaarung und Farbe des [[worker]]; Fluegel fast wasserhell, mit sehr blassen Rippen und Randmal. Thorax schmaeler als der Kopf.
[[male]]. Lg. 2,9 mm. Schmutzig braeunlichgelb. Metanotum mit zwei schwachen Beulen; Basalflaeche viel laenger als die abschuessige. Kopf und Metanotum punktirt-genetzt, mehr schimmernd. Abdomen, Mesonotum und Stielchen glaenzend und ziemlich glatt. Fuehler zehngliedrig, mit langem zweiten Geisseiglied. Sonst wie das [[queen]].
Delagoa (Dr. Liengme). Von capense Mayr, durch die viel geringere Groesse, den schmaeleren Kopf, die fehlenden Dornen und die groebere Sculptur von Kopf und Thorax unterschieden.
Ist vielleicht eine eigene Art.
description: Published as part of Forel, A., 1894, Abessinische und andere afrikanische Ameisen, gesammelt von Herrn Ingenieur Alfred Ilg, von Herrn Dr. Liengme, von Herrn Pfarrer Missionar P. Berthoud, Herrn Dr. Arth. Müller, etc., pp. 64-100 in Mitteilungen der Schweizerischen Entomologischen Gesellschaft 9 on pages 80-81, DOI: 10.5281/zenodo.14259