cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vertical shear instability in two-moment radiation-hydrodynamical simulations of irradiated protoplanetary disks II. Secondary instabilities and stability regions
Creators: name: Fuksman, Julio David Melon
name: Flock, Mario
name: Klahr, Hubert
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The vertical shear instability (VSI) is a hydrodynamical instability likely to produce turbulence in the dead zones of protoplanetary disks. Various aspects of this instability remain to be understood, including the disk regions where it can operate and the physical phenomena leading to its saturation. In this work, we studied the growth and evolution of secondary instabilities parasitic to the VSI, examining their relation with its saturation in axisymmetric radiation-hydrodynamical simulations of protoplanetary disks. We also constructed stability maps for our disk models, considering temperature stratifications enforced by stellar irradiation and radiative cooling and incorporating the effects of dust-gas collisions and molecular line emission. We found that the flow pattern produced by the interplay of the axisymmetric VSI modes and the baroclinic torque forms bands of nearly uniform specific angular momentum. In the high-shear regions in between these bands, the Kelvin-Helmholtz instability (KHI) is triggered. The significant transfer of kinetic energy to small-scale eddies produced by the KHI and possibly even the baroclinic acceleration of eddies limit the maximum energy of the VSI modes, likely leading to the saturation of the VSI. A third instability mechanism, consisting of an amplification of eddies by baroclinic torques, forms meridional vortices with Mach numbers up to $\sim 0.4$. Our stability analysis suggests that protoplanetary disks can be VSI-unstable in surface layers up to tens of au for reasonably high gas emissivities, even in regions where the midplane is stable. This picture is consistent with current observations of disks showing thin midplane millimeter-sized dust layers while appearing vertically extended in optical and near-infrared wavelengths.
description: Accepted for publication in Astronomy & Astrophysics
Sima clypeata Emery (Pachysima)
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Hexapoda
Hymenoptera
Formicidae
Sima
Sima clypeata

description: S. clypeata Emery.
- Cape-Town, Matjesfontein.
J'ai decrit cette espece sur la femelle seulement. L'ouvriere a la meme structure de l'epistome et du pedicule. Le metanotum offre, en arriere de la suture, une forte impression transversale.
description: Published as part of Emery, C., 1895, Voyage de M. E. Simon dans l'Afrique australe (janvier-avril 1893). 3 e mémoire. Formicides., pp. 15-56 in Annales de la Société Entomologique de France 64 on page 10
On the Ionisation of Warm Opaque Interstellar Clouds and the Intercloud Medium
Creators: name: Sciama, D. W.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we use a number of observations to construct an integrated picture of the ionisation in the interiors of quiescent warm opaque interstellar clouds and in the intercloud medium (ICM) outside dense HII regions and hot dilute bubbles. Our main conclusion is that within $\sim$ 1kpc of the sun the ionisation rate of hydrogen per unit volume in both the interiors of such clouds and in the ICM is independent of the local density of neutral hydrogen, and varies with position by less than $\sim$ 20 per cent. These conclusions strongly favour the decaying neutrino hypothesis for the ionisation of the interstellar medium in these regions. Our analysis is based on a variety of observations, of which the most remarkable is the discovery by Spitzer and Fitzpatrick (1993) that, in the four slowly moving clouds along the line of sight to the halo star HD93521, the column densities of both SII and CII$^*$, which individually range over a factor $\sim$4, are proportional to the column density of HI to within $\sim$20 per cent. This proportionality is used to show that the free electrons exciting the CII to CII$^*$ are located mainly in the interiors of the clouds, rather than in their skins, despite the large opacity of the clouds to Lyman continuum radiation. The same conclusion also follows more unambiguously from the low value of the H$α$ flux in this direction which was found by Reynolds (1996) in unpublished observations. These results are then used, in conjunction with observations of three pulsar parallaxes and dispersion measures, and with data on HeI, NII and OI line emissions, to constrain the ionisation of H, He, N and O and the flux of Lyman continuum photons from O stars in the ICM.
description: 16 pages, no figures, Latex file
Topologically cloaked magnetic colloidal transport
Creators: name: Rossi, Anna M. E. B.
name: Märker, Thomas
name: Stuhlmüller, Nico C. X.
name: Kuświk, Piotr
name: Stobiecki, Feliks
name: Urbaniak, Maciej
name: Akhundzada, Sapida
name: Vereijken, Arne J.
name: Ehresmann, Arno
name: Heras, Daniel de las
name: Fischer, Thomas M.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Cloaking is a method of making obstacles undetectable. Here we cloak unit cells of a magnetic pattern squeezed into an otherwise periodic pattern from a magnetically driven colloidal flow. We apply a time-periodic external magnetic field loop to an ensemble of paramagnetic colloidal particles on the deformed periodic magnetic pattern. There exist topological loops where the particles avoid to trespass the cloaked regions by robustly traveling around the cloak. Afterwards the ensemble of particles continues with a motion identical to the motion as if the distorted region were nonexistent and the ensemble would have trespassed the undeformed region. We construct the cloak by continuously squeezing new conformally mapped unit cells between those of the originally undeformed and periodic pattern. We find a cloaking/decloaking transition as a function of the size and shape of the newly squeezed-in region. A cloak is scalable to arbitrary size if the biholomorphic map from the undistorted periodic lattice to the region outside the cloak locally rotates by less than an angle of forty five degrees. The work generalizes cloaking from waves toward particles.
Influence of magnetic disorders on Quantum Anomalous Hall Effect in Magnetic Topological Insulator Films beyond the two-dimensional limit
Creators: name: Yanxia, Xing
name: Tai, Cheung King
name: Fuming, Xu
name: Qing-feng, Sun
name: Jian, Wang
name: Yugui, Yao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantum anomalous Hall effect (QAHE) has been experimentally realized in magnetic topological insulator (MTI) thin films fabricated on magnetically doped (Bi,Sb)2Te3. In a MTI thin film with the magnetic easy axis along the normal direction (z-direction), orientations of magnetic dopants are randomly distributed around the magnetic easy axis, acting as magnetic disorders. With the aid of the non-equilibrium Green's function and Landauer-Buttiker formalism, we numerically study the influence of magnetic disorders on QAHE in a MTI thin film modeled by a three-dimensional tight-binding Hamiltonian. It is found that, due to the existence of gapless side surface states, QAHE is protected even in the presence of magnetic disorders as long as the z-component of magnetic moment of all magnetic dopants are positive. More importantly, such magnetic disorders also suppress the dissipation of the chiral edge states and enhance the quality of QAHE in MTI films. In addition, the effect of magnetic disorders depends very much on the film thickness, and the optimal influence is achieved at certain thickness. These findings are new features for QAHE in three-dimensional systems, not present in two-dimensional systems.
description: NJP,20,043011,10.1088/1367-2630/aab4e8
Soft-breaking correction to hard supersymmetric relations: QCD correction to squark decay
Creators: name: Hikasa, Ken-ichi
name: Nakamura, Yumi
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Supersymmetric relations between dimensionless couplings receive finite correction at one-loop when supersymmetry is broken softly. We calculate the $O(α_s)$ correction to the squark decay width to a quark and an electroweak gaugino, which is found to be nonvanishing. Logarithmic correction appears when the gluino is heavy.
description: 12 pages plus 5 figures, macros included
METHOD FOR CONDUCTING A COMBINED ANALYSIS OF GRID ENVIRONMENT’S FTA AND GWA THROUGH SESSION BASED MAPPING OF TRACE VARIABLES
Creators: name: Ramandeep Singh
Publisher: name: figshare
Year: 2018
Subjects: subject: 90601 Circuits and Systems
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: Computer Engineering
subject: 91204 Elemental Semiconductors
subject: FOS: Materials engineering

description: Grid computing environment due to its scale and heterogeneous nature is more vulnerable to faults. To store and analyze fault and workload information, FTA Fault Trace Archive and GWA Grid Workload Archive are used. Previously researchers have analyzed FTA and GWA as separate research problems but in this research paper we have proposed a method for conducting a combined analysis of FTA and GWA based on session based mapping of trace file variables. This is the first attempt to conduct a combined analysis of these two trace files. Along with the step by step process of combining trace files we have also included do’s and don’ts while conducting this analysis .Through this combined analysis we have established a correlation based relationship among number of node failures, number of failed jobs, failureduration and number of nodes. We have found that these variables are positively correlated with different correlation coefficients.
Monomorium albopilosum Emery, 1895, n. sp.
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Monomorium
Monomorium albopilosum

description: Monomorium albopilosum, n. sp.
- [[worker]]. Elongata, fusco-picea, mandibulis et articulationibus ferrugineis, pilis longis, subtilibus, albidis hirta, capite thoraceque confertissime punctatis, opacis, pedunculo subtilius punctata, subnitido, abdomine reliquo nitido, caerulescente, extrema basi punctato, capite elongato, clypeo emarginato, antennis gracilibus, scapo marginem occipitis superante, thoracis sutura meso-metanotali leviter impressa, pedunculi nodis subaequalibus, pedibus nitidis, pilosis. - Long. 3 - 3 1 / 2 mill.
- Bloemfontein, Kimberley, Makapan; Leribe (Weitzecker).
Appartient au groupe de M. Salomonis; distinct de tous par sa taille elancee, sa tete allongee et surtout par les poils longs et blanchatres qui herissent tout son corps, y compris les scapes et les pattes.
description: Published as part of Emery, C., 1895, Voyage de M. E. Simon dans l'Afrique australe (janvier-avril 1893). 3 e mémoire. Formicides., pp. 15-56 in Annales de la Société Entomologique de France 64 on page 10
Current-induced near-field radiative energy, linear-momentum, and angular-momentum transfer
Creators: name: Zhu, Huimin
name: Tang, Gaomin
name: Zhang, Lei
name: Chen, Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper, we study the near-field radiative energy, linear-momentum, and angular-momentum transfer from a current-biased graphene to nanoparticles. The electric current through the graphene sheet induces nonequilibrium fluctuations, causing energy and momentum transfer even in the absence of a temperature difference. The inherent spin-momentum locking of graphene surface plasmons leads to an in-plane torque perpendicular to the direction of the electric current. In the presence of a temperature difference, the energy transfer is greatly enhanced while the lateral force and torque remain within the same order. Our work explores the potential of utilizing current-biased graphene to manipulate nanoparticles.
description: 7 pages, 4 figures
Monomorium minutum subsp. hottentota Emery, 1895, n. subsp.
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Monomorium
Monomorium minutum
M. minutum mayr, sous-Esp. hottentota

description: M. minutum Mayr, sous-esp. hottentota, n. subsp.
J'etablis cotte nouvelle sous-espece sur deux femelles de Cape Town. Elle est tres voisine de M. imerinense Forel, dont elle differe par le metanotum a profil est plus anguleux a cause de ses aretes laterales plus marquees et surtout par le pedicule plus fort, dont le 1 er segment est aussi plus longuement petiole, les n oe uds plus robustes, le 2 e plus large devant que derriere, et par consequent fortement retreci en arriere. Les proportions de la tete et du corselet, la sculpture et les poils a peu pres comme chez M. imerinense.
description: Published as part of Emery, C., 1895, Voyage de M. E. Simon dans l'Afrique australe (janvier-avril 1893). 3 e mémoire. Formicides., pp. 15-56 in Annales de la Société Entomologique de France 64 on page 12
On the Hagedorn Transition and Collective Dynamics of D0-branes
Creators: name: Chaudhuri, S.
name: Minic, D.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Banks, Fischler, Klebanov and Susskind have proposed a model for black hole thermodynamics based on the principle that the entropy is of order the number of particles at the phase transition point in a Boltzmann gas of D0-branes. We show that the deviations from Boltzmann scaling found in $d<6$ noncompact spatial dimensions have a simple explanation in the analysis of self-gravitating random walks due to Horowitz and Polchinski. In the special case of $d=4$ we find evidence for the onset of a phase transition in the Boltzmann gas analogous to the well-known Hagedorn transition in a gas of free strings. Our result relies on an estimate of the asymptotic density of states in a dilute gas of D0-branes.
description: 11 pages, plain TeX, minor comment and references added, version to appear in Phys. Lett. B
Omnidirectional Bipedal Walking with Direct Fused Angle Feedback Mechanisms
Creators: name: Allgeuer, Philipp
name: Behnke, Sven
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: An omnidirectional closed-loop gait based on the direct feedback of orientation deviation estimates is presented in this paper. At the core of the gait is an open-loop central pattern generator. The orientation feedback is derived from a 3D nonlinear attitude estimator, and split into the relevant angular deviations in the sagittal and lateral planes using the concept of fused angles. These angular deviations from expected are used by a number of independent feedback mechanisms, including one that controls timing, to perform stabilising corrective actions. The tuning of the feedback mechanisms is discussed, including an LQR-based approach for tuning the transient sagittal response. The actuator control scheme and robot pose representations in use are also addressed. Experimental results on an igus Humanoid Open Platform demonstrate the core concept of this paper, that if the sensor management and feedback chains are carefully constructed, comparatively simple model-free and robot-agnostic feedback mechanisms can successfully stabilise a generic bipedal gait.
description: International Conference on Humanoid Robots (Humanoids), Canc\'un, Mexico, 2016
title: A Change Laboratory
title: A collective approach to addressing issues in laptop-mediated English language classrooms
titleType: Subtitle
Creators: name: Miles, Rob
Publisher: name: Lancaster University
Year: 2021
Subjects: Change Laboratory
activity theory
ELT
TEL
English language teaching
Technology Enhanced Learning (TEL)
collaboration
laptops
insider research
contradictions

description: This thesis describes a Change Laboratory (Engeström et al., 1996; Virkkunen & Newnham, 2013) intervention carried out by a group of English Language Teaching (ELT) professionals with the aim of improving teaching and learning in laptop-mediated English language classrooms. The research was carried out in the English preparatory course at a federal institution in the United Arab Emirates (UAE). Following the methodology of the Change Laboratory, the project first identifies a number of historical and current contradictions, manifesting as dilemmas, conflicts, critical conflicts and double binds, which may be causing unintended outcomes of attrition and failure among students on the preparatory English course. Using the principles of expansive learning, the participants, a group of eight English language teachers, propose, model and examine a number of solutions to the contradictions identified. These solutions are presented as a proposed future model of the activity system. The results are specific for the English preparatory course, but the solutions proposed provide a model for effective device usage, increased student collaboration and sound pedagogical practice that could be applicable in other university teaching environments where one-to-one devices are deployed. Rather than proposing a state-of-the-art solution focusing on hypothetical possibilities, the Change Laboratory has focused on the state-of-the-actual, and proposed a new model of teaching that is effective in this context and could provide a starting point at least in other contexts where technology is being used to enhance learning. This project contributes to knowledge using Change Laboratory methodology and in particular the insider Change Laboratory, activity theory, ELT and technology enhanced learning (TEL) in face-to-face teaching environments. Opportunities for future research are also identified.
Differences in the Cooling Behavior of Strange Quark Matter Stars and Neutron Stars
Creators: name: Schaab, Christoph
name: Hermann, Bernd
name: Weber, Fridolin
name: Weigel, Manfred K.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The general statement that hypothetical strange (quark matter) stars cool more rapidly than neutron stars is investigated in greater detail. It is found that the direct Urca process could be forbidden not only in neutron stars but also in strange stars. In this case, strange stars are slowly cooling, and their surface temperatures are more or less indistinguishable from those of slowly cooling neutron stars. Furthermore the case of enhanced cooling is reinvestigated. It shows that strange stars cool significantly more rapidly than neutron stars within the first $\sim 30$ years after birth. This feature could become particularly interesting if continued observation of SN 1987A would reveal the temperature of the possibly existing pulsar at its center.
description: 9 pages, LaTeX (aas-style file), 2 ps-figures. To be published in ApJ Letters
Collective Strong Coupling Modifies Aggregation and Solvation
Creators: name: Castagnola, Matteo
name: Haugland, Tor S.
name: Ronca, Enrico
name: Koch, Henrik
name: Schäfer, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Intermolecular interactions are pivotal for aggregation, solvation, and crystallization. We demonstrate that the collective strong coupling of several molecules to a single optical mode results in notable changes in the molecular excitations around an impurity, e.g., in the first aggregation or solvation shell. A competition between short-range Coulombic and long-range photonic correlation inverts the local transition density in a polaritonic state, suggesting notable changes in the polarizability of the solvation shell. Our results provide an alternative perspective on recent work in polaritonic chemistry and pave the way for the rigorous treatment of cooperative effects in aggregation, solvation, and crystallization.
Neutrino-photon Scattering in a Magnetic Field
Creators: name: Dicus, Duane A.
name: Repko, Wayne W.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Previous calculations of photon-neutrino scattering in a constant background magnetic field are extended and corrected.
description: Corrections to the labeling of the entries in Table 1
A Globular Cluster Luminosity Function Distance to NGC 4993 Hosting a Binary Neutron Star Merger GW170817/GRB 170817A
Creators: name: Lee, Myung Gyoon
name: Kang, Jisu
name: Im, Myungshin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: NGC 4993 hosts a binary neutron star merger emitting gravitational waves and electromagnetic waves, GW170817/GRB 170817A. The distance to this galaxy is not well established. We select the globular cluster candidates from the Hubble Space Telescope/ACS F606W images of NGC 4993 in the archive, using the structural parameters of the detected sources. The radial number density distribution of these candidates shows a significant central concentration around the galaxy center at the galactocentric distance $r<50''$, showing that they are mostly the members of NGC 4993. Also the luminosity function of these candidates is fit well by a Gaussian function. Therefore the selected candidates at $r<50''$ are mostly considered to be globular clusters in NGC 4993. We derive an extinction-corrected turnover Vega magnitude in the luminosity function of the globular clusters at $20''
description: Accepted for publication in ApJL, 7 pages, 5 figures
Major effects on blood-retina barrier passage by minor alterations in design of polybutylcyanoacrylate nanoparticles
Creators: name: You, Qing
name: Hopf, Talea
name: Hintz, Werner
name: Rannabauer, Stefan
name: Voigt, Nadine
name: B. Van Wachem
name: Henrich-Noack, Petra
name: Sabel, Bernhard A.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Hematology

description: Because the blood-brain barrier (BBB) is an obstacle for drug-delivery, carrier systems such as polybutylcyanoacrylate (PBCA) nanoparticles (NPs) have been studied. Yet, little is known of how physiochemical features such as size, surfactants and surface charge influence BBB passage in vivo. We now used a rat model of in vivo imaging of the retina - which is brain tissue and can reflect the situation at the BBB - to study how size and surface charge determine NPs’ ability to cross the blood-retina barrier (BRB). Interestingly, for poloxamer 188-modified, DEAE-dextran-stabilised, fluorescent PBCA NPs, decreasing the average zeta-size from 272 nm to 172 nm by centrifugation reduced the BRB passage of the NPs substantially. Varying the zeta potential within the narrow range of 0–15 mV by adding different amounts of stabiliser revealed that 0 mV and 15 mV were less desirable than 5 mV which facilitated the BRB passage. Moreover, whether the fluorescent marker was adsorbed or incorporated also influenced the transport into the retina tissue. Thus, minor changes in design of nano-carriers can alter physicochemical parameters such as size or zeta potential, thus substantially influencing NPs’ biological distribution in vivo, possibly by interactions with blood constituents and peripheral organs.
Global martingale solutions for a stochastic population cross-diffusion system
Creators: name: Dhariwal, Gaurav
name: Jüngel, Ansgar
name: Zamponi, Nicola
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H15, 35R60, 60J10, 92D25

description: The existence of global nonnegative martingale solutions to a stochastic cross-diffusion system for an arbitrary but finite number of interacting population species is shown. The random influence of the environment is modeled by a multiplicative noise term. The diffusion matrix is generally neither symmetric nor positive definite, but it possesses a quadratic entropy structure. This structure allows us to work in a Hilbert space framework and to apply a stochastic Galerkin method. The existence proof is based on energy-type estimates, the tightness criterion of Brzeźniak and co-workers, and Jakubowski's generalization of the Skorokhod theorem. The nonnegativity is proved by an extension of Stampacchia's truncation method due to Chekroun, Park, and Temam.
Ocymyrmex barbiger Emery
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Ocymyrmex
Ocymyrmex barbiger

description: Ocymyrmex barbiger Emery.
- Cape Town..
description: Published as part of Emery, C., 1895, Voyage de M. E. Simon dans l'Afrique australe (janvier-avril 1893). 3 e mémoire. Formicides., pp. 15-56 in Annales de la Société Entomologique de France 64 on page 12
Nonadiabatic transitions during a passage near a critical point
Creators: name: Sinitsyn, Nikolai A.
name: Sadhasivam, Vijay Ganesh
name: Suzuki, Fumika
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The passage through a critical point of a many-body quantum system leads to abundant nonadiabatic excitations. Here, we explore a regime, in which the critical point is not crossed although the system is passing slowly very close to it. We show that the leading exponent for the excitation probability then can be obtained by standard arguments of the Dykhne formula but the exponential prefactor is no longer simple, and behaves as a power law on the characteristic transition rate. We derive this prefactor for the nonlinear Landau-Zener (nLZ) model by adjusting the Dykhne's approach. Then, we introduce an exactly solvable model of the transition near a critical point in the Stark ladder. We derive the number of the excitations for it without approximations, and find qualitatively similar results for the excitation scaling.
description: 10 pages, 5 figures
Hund's coupling stabilized superconductivity in the presence of spin-orbit interactions
Creators: name: Cheung, Alfred K. C.
name: Agterberg, D. F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The intraorbital repulsive Hubbard interaction cannot lead to attractive superconducting pairing states, except through the Kohn-Luttinger mechanism. This situation may change when we include additional local interactions such as the interorbital repulsion $U^\prime$ and Hund's interactions $J$. Adding these local interactions, we study the nature of the superconducting pairs in systems with tetragonal crystal symmetry including the $d_{xz}$ and $d_{yz}$ orbitals, and in octahedral systems including all three of $d_{xz}$, $d_{yz}$, and $d_{xy}$ orbitals. In the tetragonal case, spin-orbit interactions can stabilize attractive pairing channels containing spin triplet, orbital singlet character. Depending on the form of spin-orbit coupling, pairing channels belonging to degenerate, non-trivial irreducible representations may be stabilized. In the octahedral case, the pairing interactions of superconducting channels are found to depend critically on the number of bands crossing the Fermi energy.
description: 9 pages
$SU(2,R)_q $ Symmetries of Non-Abelian Toda Theories
Creators: name: Gomes, J. F.
name: Sotkov, G. M.
name: Zimerman, A. H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The classical and quantum algebras of a class of conformal NA-Toda models are studied. It is shown that the $SL(2,R)_q$ Poisson brackets algebra generated by certain chiral and antichiral charges of the nonlocal currents and the global U(1) charge appears as an algebra of the symmetries of these models.
description: 13 pages, no figures, latex file
Anti-reflection coating with mullite and Duroid for large-diameter cryogenic sapphire and alumina optics
Creators: name: Sakaguri, Kana
name: Hasegawa, Masaya
name: Sakurai, Yuki
name: Sugiyama, Junna
name: Farias, Nicole
name: Hill, Charles
name: Johnson, Bradley R.
name: Konishi, Kuniaki
name: Kusaka, Akito
name: Lee, Adrian T.
name: Matsumura, Tomotake
name: Wollack, Edward J.
name: Yumoto, Junji
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We developed a broadband two-layer anti-reflection (AR) coating for use on a sapphire half-wave plate (HWP) and an alumina infrared (IR) filter for the cosmic microwave background (CMB) polarimetry. Measuring the faint CMB B-mode signals requires maximizing the number of photons reaching the detectors and minimizing spurious polarization due to reflection with an off-axis incident angle. Sapphire and alumina have high refractive indices of 3.1 and are highly reflective without an AR coating. This paper presents the design, fabrication, quality control, and measured performance of an AR coating using thermally-sprayed mullite and Duroid 5880LZ. This technology enables large optical elements with diameters of 600 mm. We also present a newly developed thermography-based nondestructive quality control technique, which is key to assuring good adhesion and preventing delamination when thermal cycling. We demonstrate the average reflectance of about 2.6% (0.9%) for two observing bands centered at 90/150 (220/280) GHz. At room temperature, the average transmittance of a 105 mm square test sample at 220/280 GHz is 83%, and it will increase to 90% at 100 K, attributed to reduced absorption losses. Therefore, our developed layering technique has proved effective for 220/280 GHz applications, particularly in addressing dielectric loss concerns. This AR coating technology has been deployed in the cryogenic HWP and IR filters of the Simons Array and the Simons observatory experiments and applies to future experiments such as CMB-S4.
title: Évaluation 2 projet PALOMED L’appartenance locale en Méditerranée. Relations sociales, droits, revendications 2015
Creators: name: LabexMed
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019

description: Évaluation du projet PALOMED L’appartenance locale en Méditerranée. Relations sociales, droits, revendications, réalisée en 2015.
Projet de recherche porté par Isabelle Grangaud (IREMAM UMR 7310), dans le cadre du programme APRIMED, initié par le LabexMed.
Measurement of the gluon PDF at small x with neutrino telescopes
Creators: name: Gelmini, Graciela
name: Gondolo, Paolo
name: Varieschi, Gabriele
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the possibility that neutrino telescopes may provide an experimental determination of the slope lambda of the gluon distribution in the proton at momentum fractions x smaller than the accelerator reach. The method is based on a linear relation between lambda and the spectral index (slope) of the down-going atmospheric muon flux above 100 TeV, for which there is no background. Considering the uncertainties in the charm production cross section and in the cosmic ray composition, we estimate the error on the measurement of lambda through this method, excluding the experimental error of the telescopes, to be ~ +/- 0.2
description: 16 pages with 16 figures - new version, comments added, same results and figures
Ocymyrmex weitzeckeri
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Ocymyrmex
Ocymyrmex weitzeckeri

description: O Weitzeckeri Emery.
- Vrijburg, Makapan, Kimberley.
J'attribue a cette espece deux males de Hamman's-Kraal, qui different de celui d' O. barbiger par sa tete plus large que longue, les yeux tres grands, occupant plus de la moitie des cotes de la tete et le 3 e segment de l'abdomen (1 er apres le pedicule), plus allonge et distinctement resserre en forme de col en avant, comme chez l'ouvriere.
description: Published as part of Emery, C., 1895, Voyage de M. E. Simon dans l'Afrique australe (janvier-avril 1893). 3 e mémoire. Formicides., pp. 15-56 in Annales de la Société Entomologique de France 64 on page 12
Split spin-squeezed Bose-Einstein Condensates
Creators: name: Jing, Yumang
name: Fadel, Matteo
name: Ivannikov, Valentin
name: Byrnes, Tim
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate and model the behaviour of split spin-squeezed Bose-Einstein condensates (BECs) system. In such a system, a spin-polarized BEC is first squeezed using a $ (S^z)^2 $ interaction, then are split into two separate clouds. After the split, we consider that the particle number in each cloud collapses to a fixed number. We show that this procedure is equivalent to applying an interaction corresponding to squeezing each cloud individually plus an entangling operation. We analyse the system's entanglement properties and show that it can be detected using correlation-based entanglement criteria. The nature of the states are illustrated by Wigner functions and have the form of a correlated squeezed state. The conditional Wigner function shows high degrees of non-classicality for dimensionless squeezing times beyond $ 1/\sqrt{N} $, where $N$ is the number of particles per BEC.
description: 11 pages, 7 figures
Does Journaling Encourage Healthier Choices? Analyzing Healthy Eating Behaviors of Food Journalers
Creators: name: Achananuparp, Palakorn
name: Lim, Ee-Peng
name: Abhishek, Vibhanshu
Publisher: name: arXiv
Year: 2018
Subjects: subject: Social and Information Networks (cs.SI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Past research has shown the benefits of food journaling in promoting mindful eating and healthier food choices. However, the links between journaling and healthy eating have not been thoroughly examined. Beyond caloric restriction, do journalers consistently and sufficiently consume healthful diets? How different are their eating habits compared to those of average consumers who tend to be less conscious about health? In this study, we analyze the healthy eating behaviors of active food journalers using data from MyFitnessPal. Surprisingly, our findings show that food journalers do not eat as healthily as they should despite their proclivity to health eating and their food choices resemble those of the general populace. Furthermore, we find that the journaling duration is only a marginal determinant of healthy eating outcomes and sociodemographic factors, such as gender and regions of residence, are much more predictive of healthy food choices.
description: Published at Digital Health 2018
Solvent-assisted excited state proton transfer and photoacidity of 2-hydroxypyridine. A nonadiabatic dynamics study
Creators: name: Hilal, Rifaat
name: Saadullah G. Aziz
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Plant Biology

description: Reactions involving proton transfer, especially those taking place in excited states (ESPT), received considerable attention. These reactions underlie many biological and biochemical processes that are vital to life. DNA mutations excited state funnelling and transport phenomena are just examples. Among many molecules undergoing this type of photoreactions, phenols show a unique property, the so-called photoacidity. In the present communication, solvent (methanol and ammonia) assisted excited state proton transfer and photo acidity of 2-hydroxypyridine (2HP) are investigated at the DFT M06-2X / def2pvv level of theory. Excited states of 2HP and its complexes with methanol and ammonia were examined at two levels. First, sampling a Wigner distribution of 300 points, the photoabsorption spectra were simulated within the nuclear ensemble approximation. Second, simulation of the dynamics of the excited states with the surface hopping method. Several separate spectral windows with three hundred trajectories each, were considered. Lifetime of excited states and photochemical channels observed were discussed.
Synthetic images aid the recognition of human-made art forgeries
Creators: name: Ostmeyer, Johann
name: Schaerf, Ludovica
name: Buividovich, Pavel
name: Charles, Tessa
name: Postma, Eric
name: Popovici, Carina
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Previous research has shown that Artificial Intelligence is capable of distinguishing between authentic paintings by a given artist and human-made forgeries with remarkable accuracy, provided sufficient training. However, with the limited amount of existing known forgeries, augmentation methods for forgery detection are highly desirable. In this work, we examine the potential of incorporating synthetic artworks into training datasets to enhance the performance of forgery detection. Our investigation focuses on paintings by Vincent van Gogh, for which we release the first dataset specialized for forgery detection. To reinforce our results, we conduct the same analyses on the artists Amedeo Modigliani and Raphael. We train a classifier to distinguish original artworks from forgeries. For this, we use human-made forgeries and imitations in the style of well-known artists and augment our training sets with images in a similar style generated by Stable Diffusion and StyleGAN. We find that the additional synthetic forgeries consistently improve the detection of human-made forgeries. In addition, we find that, in line with previous research, the inclusion of synthetic forgeries in the training also enables the detection of AI-generated forgeries, especially if created using a similar generator.
description: 15 + 10 pages, 4 + 5 figures, 4 + 10 tables; van Gogh dataset available, DOI: https://doi.org/10.5281/zenodo.10276928
Eat & Tell: A Randomized Trial of Random-Loss Incentive to Increase Dietary Self-Tracking Compliance
Creators: name: Achananuparp, Palakorn
name: Lim, Ee-Peng
name: Abhishek, Vibhanshu
name: Yun, Tianjiao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: A growing body of evidence has shown that incorporating behavioral economics principles into the design of financial incentive programs helps improve their cost-effectiveness, promote individuals' short-term engagement, and increase compliance in health behavior interventions. Yet, their effects on long-term engagement have not been fully examined. In study designs where repeated administration of incentives is required to ensure the regularity of behaviors, the effectiveness of subsequent incentives may decrease as a result of the law of diminishing marginal utility. In this paper, we introduce random-loss incentive -- a new financial incentive based on loss aversion and unpredictability principles -- to address the problem of individuals' growing insensitivity to repeated interventions over time. We evaluate the new incentive design by conducting a randomized controlled trial to measure the influences of random losses on participants' dietary self-tracking and self-reporting compliance using a mobile web application called Eat & Tell. The results show that random losses are significantly more effective than fixed losses in encouraging long-term engagement.
description: Published at Digital Health 2018
A Theory of Chaordic Economics: How Artificial Intelligence and Blockchain Transform Businesses, Economies and Societies
Creators: name: Treiblmaier, Horst
Publisher: name: arXiv
Year: 2025
Subjects: subject: Theoretical Economics (econ.TH)
subject: FOS: Economics and business

description: Dee Hock, the founder of Visa, coined the term 'chaordic' to describe simultaneously chaotic and ordered systems. Based on his reasoning, we introduce the Theory of Chaordic Economics to explain how economic systems are transformed by two disruptive technologies: namely Artificial Intelligence and Blockchain. Artificial intelligence can generate novel output through algorithmic yet rather unpredictable processes. Blockchain creates deterministic results without central authorities and relies on elaborated protocols that prescribe how consensus can be reached within a network of peers. The amalgamation of chaos and order produces chaordic economic systems and can yield hitherto unthinkable economic structures.
description: 19 pages, 1 figure, 4 tables
The Gravitationally-Lensed Radio Source MG0751+2716
Creators: name: Lehar, J.
name: Burke, B. F.
name: Conner, S. R.
name: Falco, E. E.
name: Fletcher, A. B.
name: Irwin, M.
name: McMahon, R. G.
name: Muxlow, T. W. B.
name: Schechter, P. L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a new gravitationally lensed radio source. Radio maps of MG0751+2716 show four lensed images, which, at higher resolution, are resolved into long arcs of emission. A group of galaxies is present in optical images, including the principal lensing galaxy, with a much brighter galaxy just a few arcseconds away. We have measured the redshift of this brighter galaxy. No optical counterpart to the background source has been detected. Lens models that can readily reproduce the lensed image positions all require a substantial shear component. However, neither the very elongated lens nor the bright nearby galaxy are correctly positioned to explain the shear. Lens models which associate the mass with the light of galaxies in the group can produce an acceptable fit, but only with an extreme mass-to-light ratio in one of the minor group members.
description: 1 Latex aaspp4 manuscript, 17 pages with 5 postscript figures. Submitted to AJ 1997.02.19; accepted 1997.04.15 . Mostly stylistic changes since the first submission, with a few minor changes in content and the tables
Pheidologeton perpusillum Emery, 1895, n. sp.
Creators: name: Emery, C.
Publisher: name: Zenodo
Year: 1895
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Pheidologeton
Pheidologeton perpusillum

description: Pheidologeton perpusillum, n. sp.
- (Pl. 2, flg. 8 - 11). - [[worker]] major. Flavo-testacea, capite rubescente, nitida, laevissima, punctis piligeris conspersa, mesopleuris metapleurisque crebre punctatis, opacis. Caput elongatum, subparallelum, postice late emarginatum et crista seu cannula transversa,. mcdio interrupta ante marginen, occipitalem instructum, genis atque frontis luteribus striatis, laminis frontalibus brevibus, clypeo subplano, antice late emarginato, oculis minutissimis, mandibulis disperse punctatis, nitidis, basi extus striatis, 5 - dentatis, antennarum brevium scapo capitis dimidiam longitudinem vix superante. Thorax sutura meso-metanotali profunde impressa, pro-mesonotali obsoleta, promesonoti disco convexo, scutiformi, antice obtuse marginalo, postice angustata, metanoto utrinque cum dente acuto. Abdomen pedunculi segmento 1 ° nodo parvo, squamiformi, 2 ° majore, transverse ovato, utrinque subangulato. - Long. 2 - 2 1 / 2 mill.
[[worker]] minor. Flavo-testacea, capite elongato, lateribus modice arcuatis, occipitis margine concavo, acuto, promesonoto antice marginalo, angulis lateralibus acutis, metanoto ulrinqiie dente trigono, petiolo abdominis angusta, noda 2 ° precedente vix latiore, segmenta sequente antice truncato. Sculptum ut in [[worker]] majore. - Long. 1 1 / 2 mill.
Deux grandes ouvrieres de Pretoria, une petite de Kimberley. Ces exemplaires provenant de differentes localites, je ne suis pas absolument certain de leur identite specifique.
Par la petitesse de ses yeux et la forme de la tete do la grande ouvriere, cette Fourmi rappelle d'une maniere frappante Aeromyrma nossindambo Forel, de Madagascar; neanmoins, je crois devoir la placer, du moins provisoirement, dans le genre Pheidologeton, a cause des ses antennes de 11 articles, a massue de 2. Peut-etre faudra-t-il reunir plus tard les deux genres, ou bien placer la nouvelle espece dans le genre Aeromyrma. C'est une question a decider lorsque l'on connaitra les formes ailees. Les ligures me dispenseront d'une plus longue description.
description: Published as part of Emery, C., 1895, Voyage de M. E. Simon dans l'Afrique australe (janvier-avril 1893). 3 e mémoire. Formicides., pp. 15-56 in Annales de la Société Entomologique de France 64 on pages 12-13