cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Universal behavior in a generalized model of contagion
Creators: name: Dodds, P. S.
name: Watts, D. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Models of contagion arise broadly both in the biological and social sciences, with applications ranging from the transmission of infectious diseases to the diffusion of innovations and the spread of cultural fads. In this Letter, we introduce a general model of contagion which, by explicitly incorporating memory of past exposures to, for example, an infectious agent, rumor, or new product, includes the main features of existing contagion models and interpolates between them. We obtain exact solutions for a simple version of the model, finding that under general conditions only three classes of collective dynamics exist, two of which correspond to familiar epidemic threshold and critical mass dynamics, while the third is a distinct intermediate case. We find that for a given length of memory, the class into which a particular system falls is determined by two parameters, each of which ought to be measurable empirically. Our model suggests novel measures for assessing the susceptibility of a population to large contagion events, and also a possible strategy for inhibiting or facilitating them.
description: 5 pages, 2 figures; to appear in Phys. Rev. Lett., 2004
Overtones and Nonlinearities in Binary Black Hole Ringdowns
Creators: name: Giesler, Matthew
name: Ma, Sizheng
name: Mitman, Keefe
name: Oshita, Naritaka
name: Teukolsky, Saul A.
name: Boyle, Michael
name: Deppe, Nils
name: Kidder, Lawrence E.
name: Moxon, Jordan
name: Nelli, Kyle C.
name: Pfeiffer, Harald P.
name: Scheel, Mark A.
name: Throwe, William
name: Vu, Nils L.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using high-accuracy numerical relativity waveforms, we confirm the presence of numerous overtones of the $\ell=2$, $m=2$ quasinormal mode early in the ringdown of binary black hole mergers. We do this by demonstrating the stability of the mode amplitudes at different fit times, ruling out the possibility that a linear superposition of modes unphysically fits a highly nonlinear part of the waveform. We also find a number of previously unidentified subdominant second-order quasinormal modes in the $(2,2)$ mode. Even though these modes are mathematically nonlinear, they nevertheless confirm the validity of perturbation theory as a good approximation for describing much of the ringdown.
description: 17 pages, 14 figures; v2 matches published version
Reciprocity between Moduli and Phases in Time-Dependent Wave-Functions
Creators: name: Englman, R.
name: Yahalom, A.
name: Baer, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For time (t) dependent wave functions we derive rigorous conjugate relations between analytic decompositions (in the complex t-plane) of the phases and of the log moduli. We then show that reciprocity, taking the form of Kramers-Kronig integral relations (but in the time domain), holds between observable phases and moduli in several physically important instances. These include the nearly adiabatic (slowly varying) case, a class of cyclic wave-functions, wave packets and non-cyclic states in an "expanding potential". The results exhibit the interdependence of geometric-phases and related decay probabilities. Several known quantum mechanical theories possess the reciprocity property obtained in the paper.
description: 17 pages, 3 figures
Blockchain software patterns for the design of decentralized applications: A systematic literature review
Creators: name: Six, Nicolas
name: Herbaut, Nicolas
name: Salinesi, Camille
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: A software pattern is a reusable solution to address a commonly occurring problem within a given context when designing software. Using patterns is a common practice for software architects to ensure software quality. Many pattern collections have been proposed for a large number of application domains. However, because of the technology's recentness, there are only a few available collections with a lack of extensive testing in industrial blockchain applications. It is also difficult for software architects to adequately apply blockchain patterns in their applications, as it requires deep knowledge of blockchain technology. Through a systematic literature review, this paper has identified 120 unique blockchain-related patterns and proposes a pattern taxonomy composed of multiple categories, built from the extracted pattern collection. The purpose of this collection is to map, classify, and describe all available patterns across the literature to help readers make adequate decisions regarding blockchain pattern selection. This study also shows potential applications of those patterns and identifies the relationships between blockchain patterns and other non-blockchain software patterns.
A course Literature and mathematics
Creators: name: Durac, Spangle
name: Merker, Claude
name: Neuwirth, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics

description: This article gives an account of a teaching experience carried out from 2008 to 2021 at the university of Franche-Comt{é} as an answer to the ministerial command of proposing cross-disciplinary courses in the curricula. The goal of the experience was to develop simultaneously a discourse on mathematics and a discourse on literature, two independent discourses, but each filled with the gap between one domain and the other and mindful of the flashes of thought that are lightening from one to the other, witnesses of unity in their reasoning. -- Cet article rend compte d'une exp{é}rience d'enseignement men{é}e de 2008 {à} 2012 {à} l'universit{é} de Franche-Comt{é} en r{é}ponse {à} l'injonction minist{é}rielle de proposer des unit{é}s transversales dans les maquettes de dipl{ô}me. Le but de cette exp{é}rience a {é}t{é} de d{é}velopper {à} la fois un discours sur les math{é}matiques et un discours sur la litt{é}rature, deux discours ind{é}pendants, mais chacun rempli de l'{é}cart entre l'un des domaines et l'autre, et attentif aux {é}clairs de la pens{é}e qui jaillissent de l'un vers l'autre, t{é}moignages d'unit{é} dans la d{é}marche intellectuelle.
description: in French
SEPARAÇÃO DOS PODERES E A EVOLUÇÃO DO ENTENDIMENTO DO STF SOBRE O MANDADO DE INJUNÇÃO
Creators: name: VIDAL SERRANO NUNES JUNIOR
name: MARCIO ORTIZ MEINBERG
Publisher: name: figshare
Year: 2020
Subjects: subject: Law
subject: FOS: Law

description: The purpose of this article is to identify how Supremo Tribunal Federal – STF (Brazilian’s Supreme Court) sees the Separation of Powers related to the nature of the Writ of Injunction, a constitutional remedy (relief) to be granted in case of Public Power’s omission in enacting a regulatory norm needed to enable the exercise of constitutional rights and freedoms and the prerogatives inherent in nationality, sovereignty and citizenship. The historical opinion of the STF on this subject is not consensual, and there is at least two major currents in which the ministers-judges have joined: Concretist Theory and Non-Concretist Theory (and its subdivisions). The two major currents differ radically, either about the relationship between the Judiciary and the other Powers, as about the effects of the Writ of Injunction. Besides, the STF’s opinion has evolved historically, not only regards the majority position of the Court around one of the theories, but also as to the development of each of them. After analysing the main STF’s decisions on the subject, we systematize the central characteristics of each of the currents (and how they differ from each other), as well as their foundations and evolution. The methodology is the Legal Dogmatic (according Alexy and Dreier), with focus on the empirical dimension (the analysis of STF’s decisions) and analytical dimension (the establishment of definitions and the systematization the concepts used by the STF’s ministers-judges). In conclusion, we present the central characteristics related to Separation of Powers of each one the theories adopted by the STF.
Improved Models of Stellar Core Collapse and Still no Explosions: What is Missing?
Creators: name: Buras, R.
name: Rampp, M.
name: Janka, H. -Th.
name: Kifonidis, K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Two-dimensional hydrodynamic simulations of stellar core-collapse with and without rotation are presented which for the first time were performed by solving the Boltzmann equation for the neutrino transport including a state-of-the-art description of neutrino interactions. Although convection develops below the neutrinosphere and in the neutrino-heated region behind the supernova shock, the models do not explode. This suggests missing physics, possibly with respect to the nuclear equation of state and weak interactions in the subnuclear regime. However, it might also indicate a fundamental problem of the neutrino-driven explosion mechanism.
description: PRL submitted; 3 eps figures, 1 colored, high-quality available upon request
Anseropoda undetermined
Creators: name: Jangoux, Michel
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Asteroidea
Valvatida
Asterinidae
Anseropoda
Anseropoda undetermined

description: rosacea var. lobis senis Lamarck, 1816, Asterias
(Fig. 34)
Asterias rosacea Lamarck, 1816: 558.
Anseropoda rosacea – Clark 1993: 206.
CURRENT STATUS. — Anseropoda sp.
MATERIAL EXAMINED. — MHNH; Lesueur drawings collection; ref. 74001; Baudin expedition; Péron and Lesueur leg.
REMARK
Lamarck’s variety lobis senis corresponds to a still unidentified six-armed species of Anseropoda Nardo, 1834. Lamarck gave no locality for the species. Lamarck’s material of Asterias rosacea var. lobis senis could not be found in the MNHN.
description: Published as part of Jangoux, Michel, 2021, The asteroid species of Lamarck (Echinodermata: Asteroidea), pp. 213-252 in Zoosystema 43 (13) on page 242, DOI: 10.5252/zoosystema2021v43a13, http://zenodo.org/record/4768141
On threshold amplitudes II: Amplitudes nullification via classical symmetries
Creators: name: Domienik, Joanna
name: Kosinski, Piotr
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Ward identities for amplitudes at the tree level are derived from symmetries of the corresponding classical dynamical systems. The results are applied to some 2 into n amplitudes.
description: 10 pages, no figures
Pairing gaps in atomic gases at the BCS-BEC crossover
Creators: name: Heiselberg, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Strong evidence for pairing and superfluidity has recently been found in atomic Fermi gases at the BCS-BEC crossover both in collective modes and RF excitation energies. It is argued that the scale for the effective pairing gaps measured in RF experiments is set by the lowest quasiparticle in-gap excitation energies. These are calculated at the BCS-BEC crossover from semiclassical solutions to the Bogoliubov-deGennes equations. The strong damping of the radial breathing mode observed in the BCS limit occur when the lowest quasiparticle excitation energies coincide with the radial frequency, which indicates that a coupling between them take place.
description: revised version: including damping, resonance position typo corrected
A new multi-beam apparatus for the study of surface chemistry routes to formation of complex organic molecules in space
Creators: name: Congiu, Emanuele
name: Sow, Abdellahi
name: Nguyen, Thanh
name: Baouche, Saoud
name: Dulieu, François
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A multi-beam ultra-high vacuum apparatus is presented. In this article we describe the design and construction of a new laboratory astrophysics experiment -- VErs de NoUvelles Synthèses (VENUS) -- that recreates the solid-state non-energetic formation conditions of complex organic molecules in dark clouds and circumstellar environments. The novel implementation of four operational differentially-pumped beam lines will be used to determine the feasibility and the rates for the various reactions that contribute to formation of molecules containing more than six atoms. Data are collected by means of Fourier transform infrared spectroscopy and quadrupole mass spectrometry. The gold-coated sample holder reaches temperatures between 7 and 400 K. The apparatus was carefully calibrated and the acquisition system was developed to ensure that experimental parameters are recorded as accurately as possible. A great effort has been made to have the beam lines converge towards the sample. Experiments have been developed to check the beam alignment using reacting systems of neutral species (NH$_3$, H$_2$CO). Preliminary original results were obtained for the NO+H system, which shows that chemistry occurs only in the very first outer layer of the deposited species, that is the chemical layer and the physical layer coincide. This article illustrates the characteristics, performance, and future potential of the new apparatus in view of the forthcoming launch of the James Webb Space Telescope. We show that VENUS will have a major impact through its contributions to surface science and astrochemistry.
description: Promoted as an Editor's Pick by the RSI Editors
MICK: A Meta-Learning Framework for Few-shot Relation Classification with Small Training Data
Creators: name: Geng, Xiaoqing
name: Chen, Xiwen
name: Zhu, Kenny Q.
name: Shen, Libin
name: Zhao, Yinggong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Few-shot relation classification seeks to classify incoming query instances after meeting only few support instances. This ability is gained by training with large amount of in-domain annotated data. In this paper, we tackle an even harder problem by further limiting the amount of data available at training time. We propose a few-shot learning framework for relation classification, which is particularly powerful when the training data is very small. In this framework, models not only strive to classify query instances, but also seek underlying knowledge about the support instances to obtain better instance representations. The framework also includes a method for aggregating cross-domain knowledge into models by open-source task enrichment. Additionally, we construct a brand new dataset: the TinyRel-CM dataset, a few-shot relation classification dataset in health domain with purposely small training data and challenging relation classes. Experimental results demonstrate that our framework brings performance gains for most underlying classification models, outperforms the state-of-the-art results given small training data, and achieves competitive results with sufficiently large training data.
FigS1.pdf from A semi-empirical model of the aerodynamics of manoeuvring insect flight
Creators: name: Walker, Simon M.
name: Taylor, Graham K.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences

description: Blade element modelling provides a quick analytical method for estimating the aerodynamic forces produced during insect flight, but such models have yet to be tested rigorously using kinematic data recorded from free-flying insects. This is largely because of the paucity of detailed free-flight kinematic data, but also because analytical limitations in existing blade element models mean that they cannot incorporate the complex three-dimensional movements of the wings and body that occur during insect flight. Here, we present a blade element model with empirically fitted aerodynamic force coefficients that incorporates the full three-dimensional wing kinematics of manoeuvring Eristalis hoverflies, including torsional deformation of their wings. The two free parameters were fitted to a large free-flight dataset comprising N = 26 541 wingbeats, and the fitted model captured approximately 80% of the variation in the stroke-averaged forces in the sagittal plane. We tested the robustness of the model by subsampling the data, and found little variation in the parameter estimates across subsamples comprising 10% of the flight sequences. The simplicity and generality of the model that we present is such that it can be readily applied to kinematic datasets from other insects, and also used for the study of insect flight dynamics.
Quantum correlations from Brownian diffusion of chaotic level-spacings
Creators: name: Evangelou, S. N.
name: Katsanos, D. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Quantum chaos is linked to Brownian diffusion of the underlying quantum energy level-spacing sequences. The level-spacings viewed as functions of their order execute random walks which imply uncorrelated random increments of the level-spacings while the integrability to chaos transition becomes a change from Poisson to Gauss statistics for the level-spacing increments. This universal nature of quantum chaotic spectral correlations is numerically demonstrated for eigenvalues from random tight binding lattices and for zeros of the Riemann zeta function.
description: 4 pages, revtex file, 4 postscript files
Statistical Analysis and Information Theory of Screened Kratzer-Hellmann Potential Model
Creators: name: Osobonye, Gabriel T.
name: Okorie, Uduakobong S.
name: Amadi, Precious O.
name: Ikot, Akpan N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this research, the radial Schrodinger equation for a newly proposed screened Kratzer-Hellmann potential model was studied via the conventional Nikiforov-Uvarov method. The approximate bound state solution of the Schrodinger equation was obtained using the Greene-Aldrich approximation, in addition to the normalized eigenfunction for the new potential model both analytically and numerically. These results were employed to evaluate the rotational-vibrational partition function and other thermodynamic properties for the screened Kratzer-Hellmann potential. We have discussed the results obtained graphically. Also, the normalized eigenfunction has been used to calculate some information-theoretic measures including Shannon entropy and Fisher information for low lying states in both position and momentum spaces numerically. We observed that the Shannon entropy results agreed with the Bialynicki-Birula and Mycielski inequality, while the Fisher information results obtained agreed with the Stam, Crammer-Rao inequality. From our results, we observed alternating increasing and decreasing localization across the screening parameter in the both eigenstates.
description: 27 pages, 11 figures, 4 tables
Luidia senegalensis
Creators: name: Jangoux, Michel
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Asteroidea
Paxillosida
Luidiidae
Luidia
Luidia senegalensis

description: senegalensis Lamarck, 1816, Asterias
(Fig. 35)
Asterias senegalensis Lamarck, 1816: 567.
Luidia senegalensis – Clark & Downey 1992: 21.
CURRENT STATUS. — Luidia senegalensis (Lamarck, 1816).
MATERIAL EXAMINED. — Senegal • MNHN-IE-2014-160; 2 syntypes; Adanson leg.
DISTRIBUTION. — Florida to south of Brazil.
REMARK
Except for its two syntypes, the species Luidia senegalensis was never reported from African coasts. The type locality could be wrong, as it is the case for several localities given by Adanson (see Madsen 1950: 205) and the syntypes most probably come from the West Indies. In fact, L. senegalensis is a shallow water species from western Atlantic. Note that the MNHN has a third specimen of L. senegalensis, also collected by Adanson. It belonged to the Michelin collection and was presumably not seen by Lamarck.
description: Published as part of Jangoux, Michel, 2021, The asteroid species of Lamarck (Echinodermata: Asteroidea), pp. 213-252 in Zoosystema 43 (13) on page 243, DOI: 10.5252/zoosystema2021v43a13, http://zenodo.org/record/4768141
Temperature-dependent Magnetic Transitions in CoCrPt-Ru-CoCrPt Synthetic Ferrimagnets
Creators: name: Beauchamp, B.
name: Marinero, E. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magnetic orientations and switching fields of a CoCrPt-Ru-CoCrPt synthetic ferrimagnet with perpendicular magnetic anisotropy have been studied in the temperature range from 2 K to 300 K. It was found that two sets of magnetic transitions occur in the CoCrPt-Ru-CoCrPt ferrimagnet across this temperature range. The first set exhibits three magnetic transitions in the 50 K - 370 K range, whereas the second involves only two transitions in the 2 K and 50 K range. The observed magnetic hysteresis curves of the synthetic ferrimagnet are explained using the energy diagram technique framework pioneered by Koplak et al. [1] which accurately describes the competition between interlayer exchange coupling energy, Zeeman energy, and anisotropy energy in the system. In this work we expand the framework to include synthetic ferrimagnets (SFMs) comprising higher perpendicular magnetic anisotropy materials and large (4X) interlayer exchange coupling energies which are promising for the development of ultrafast (ps) magnetic switching free layers in MTJ structures. Furthermore, we apply the analysis to predict SFM magnetic hysteresis curves in a temperature regime that includes temperature extrema that a synthetic ferrimagnet would be expected to reliably operate at, were it to be utilized as a free layer in a memory or sensor spintronic device.
description: 15 pages, 6 figures, 1 table. Changes: Introduction, Materials and Methods, and Results and Discussion sections expanded. Novelty of work emphasized in Abstract, Results and Discussion, and Conclusion. Typos fixed. Phrases and units fixed to be more consistent. Four references added
title: Information biases and behaviour in asset markets
Creators: name: Zhang, Fengting
Publisher: name: University of Reading
Year: 2024

description: This thesis conducts a comprehensive analysis of the behaviour and biases of 
information intermediaries in asset markets, focusing on analysts and media. The first 
empirical chapter examines analysts’ herding behaviours in stock recommendation 
revisions. The findings suggest that foreign analysts typically exhibit a higher herding 
tendency than local analysts. Our analysis further reveals that social connections between 
analysts and markets significantly influence their herding behaviour. The degree of 
herding among analysts varies depending on the market they operate in and the strength 
of their social connections within that market.
The second empirical chapter investigates the home bias of local analysts. The 
results reveal a pronounced home bias towards local firms among local analysts, which 
is stronger in the local market and weakens in nonlocal markets. Familiarity, represented 
by the broker’s entry duration and firms’ media exposure, intensifies this home bias in 
the local market; however, it exerts a lesser effect in nonlocal markets. The study also 
examines how local analysts respond to state-owned enterprises in different economic 
environments.
The third empirical chapter shifts to a macro perspective to examine the impact 
of city-level media political bias on land investors. The results indicate that residential 
and commercial land investors react negatively to media political bias due to increased 
information asymmetry. By contrast, industrial land investors respond positively due to 
potential bribery practices. The study also reveals that, in cities with efficient information 
flows and strong growth, the impact of media bias is reduced. Additionally, it observes 
that state-owned enterprises bid more aggressively for industrial land in cities with higher 
media bias.
Overall, this thesis highlights the impact of the human element on objectivity, 
which potentially leads to the biased dissemination of information. It contributes to the 
existing literature on information intermediaries and finance as well as provides insights 
for market participants and policymakers in the financial market.
Effective photon-photon interaction in a two-dimensional "photon fluid"
Creators: name: Chiao, R. Y.
name: Hansson, T. H.
name: Leinaas, J. M.
name: Viefers, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Condensed Matter (cond-mat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We formulate an effective theory for the atom-mediated photon-photon interactions in a two-dimensional ``photon fluid'' confined in a Fabry-Perot resonator. With the atoms modelled by a collection of anharmonic Lorentz oscillators, the effective interaction is evaluated to second order in the coupling constant (the anharmonicity parameter). The interaction has the form of a renormalized two-dimensional delta-function potential, with the renormalization scale determined by the physical parameters of the system, such as density of atoms and the detuning of the photons relative to the resonance frequency of the atoms. For realistic values of the parameters, the perturbation series has to be resummed, and the effective interaction becomes independent of the ``bare'' strength of the anharmonic term. The resulting expression for the non-linear Kerr susceptibility, is parametrically equal to the one found earlier for a dilute gas of two-level atoms. Using our result for the effective interaction parameter, we derive conditions for the formation of a photon fluid, both for Rydberg atoms in a microwave cavity and for alkali atoms in an optical cavity.
description: 25 pages (revtex4), including 2 figures
On the early evolution of the Galactic Halo
Creators: name: Prantzos, Nikos
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is shown that the low metallicity tail of the stellar metallicity distribution predicted by simple Outflow models for the Milky Way halo depends sensitively on whether Instantaneous Recycling is adopted or relaxed. In both cases, current - and still preliminary - data suggest a ``G-dwarf problem'' for the halo (reminiscent of the local disk). We suggest that the problem can be solved by introducing a (physically motivated) early infall phase. We point out several important implications of such a modification, concerning: the putative Pop. III (super)massive stars, the number of stars expected at very low metallicities, the questions of primary nitrogen and of the dispersion in abundance ratios of halo stars.
description: Astronomy and Astrophysics, accepted for publication (5 pages, 1 fig.)
Supplementary Methods from A semi-empirical model of the aerodynamics of manoeuvring insect flight
Creators: name: Walker, Simon M.
name: Taylor, Graham K.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences

description: Blade element modelling provides a quick analytical method for estimating the aerodynamic forces produced during insect flight, but such models have yet to be tested rigorously using kinematic data recorded from free-flying insects. This is largely because of the paucity of detailed free-flight kinematic data, but also because analytical limitations in existing blade element models mean that they cannot incorporate the complex three-dimensional movements of the wings and body that occur during insect flight. Here, we present a blade element model with empirically fitted aerodynamic force coefficients that incorporates the full three-dimensional wing kinematics of manoeuvring Eristalis hoverflies, including torsional deformation of their wings. The two free parameters were fitted to a large free-flight dataset comprising N = 26 541 wingbeats, and the fitted model captured approximately 80% of the variation in the stroke-averaged forces in the sagittal plane. We tested the robustness of the model by subsampling the data, and found little variation in the parameter estimates across subsamples comprising 10% of the flight sequences. The simplicity and generality of the model that we present is such that it can be readily applied to kinematic datasets from other insects, and also used for the study of insect flight dynamics.
Search for SUSY in the AMSB scenario with the DELPHI detector
Creators: name: The DELPHI Collaboration
name: Abdallah, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The DELPHI experiment at the LEP e+e- collider collected almost 700 pb^-1 at centre-of-mass energies above the Z0 mass pole and up to 208 GeV. Those data were used to search for SUSY in the Anomaly Mediated SUSY Breaking (AMSB) scenario with a flavour independent common sfermion mass parameter. The searches covered several possible signatures experimentally accessible at LEP, with either the neutralino, the sneutrino or the stau being the Lightest Supersymmetric Particle (LSP). They included: the search for nearly mass-degenerate chargino and neutralino, which is a typical feature of AMSB; the search for Standard-Model-like or invisibly decaying Higgs boson; the search for stable staus; the search for cascade decays of SUSY particles resulting in the LSP and a low multiplicity final state containing neutrinos. No evidence of a signal was found, and thus constraints were set in the space of the parameters of the model.
description: 21 pages, 6 figures, Accepted by Eur. Phys. J. C; a version with higher resolution figures 4, 5 and 6 can be found at http://delphiwww.cern.ch/~pubxx/www/delsec/papers/public/paper0305.ps.gz
The Fuzzy Disc
Creators: name: Lizzi, F.
name: Vitale, P.
name: Zampini, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Lattice (hep-lat)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce a finite dimensional matrix model approximation to the algebra of functions on a disc based on noncommutative geometry. The algebra is a subalgebra of the one characterizing the noncommutative plane with a * product and depends on two parameters N and theta. It is composed of functions which decay exponentially outside a disc. In the limit in which the size of the matrices goes to infinity and the noncommutativity parameter goes to zero the disc becomes sharper. We introduce a Laplacian defined on the whole algebra and calculate its eigenvalues. We also calculate the two--points correlation function for a free massless theory (Green's function). In both cases the agreement with the exact result on the disc is very good already for relatively small matrices. This opens up the possibility for the study of field theories on the disc with nonperturbative methods. The model contains edge states, a fact studied in a similar matrix model independently introduced by Balachandran, Gupta and Kurkcuoglu.
description: 17 pages, 8 figures, references added and corrected
Spatial Control of Localized Oscillations in Arrays of Coupled Laser Dimers
Creators: name: Shena, Joniald
name: Kominis, Yannis
name: Bountis, Anastasios
name: Kovanis, Vassilios
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Arrays of coupled semiconductor lasers are systems possessing radically complex dynamics that makes them useful for numerous applications in beam forming and beam shaping. In this work, we investigate the spatial controllability of oscillation amplitudes in an array of coupled photonic dimers, each consisting of two semiconductor lasers driven by differential pumping rates. We consider parameter values for which each dimer's stable phase-locked state has become unstable through a Hopf bifurcation and we show that, by assigning appropriate pumping rate values to each dimer, large-amplitude oscillations coexist with negligibly small amplitude oscillations. The spatial profile? of the amplitude of oscillations across the array can be dynamically controlled by appropriate pumping rate values in each dimer. This feature is shown to be quite robust, even for random detuning between the lasers, and suggests a mechanism for dynamically reconfigurable production of a large diversity of spatial profiles of laser amplitude oscillations.
description: 8 pages, 10 figures
Valvaster striatus
Creators: name: Jangoux, Michel
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Asteroidea
Valvatida
Asteropseidae
Valvaster
Valvaster striatus

description: striata Lamarck, 1816, Asterias
(Fig. 37)
Asterias striata Lamarck, 1816: 564.
Valvaster striatus – Clark 1993: 322.
CURRENT STATUS. — Valvaster striatus (Lamarck, 1816).
MATERIAL EXAMINED. — Mauritius • MNHN-IE-2014-36; holotype; Mathieu leg.; 1812.
description: Published as part of Jangoux, Michel, 2021, The asteroid species of Lamarck (Echinodermata: Asteroidea), pp. 213-252 in Zoosystema 43 (13) on page 245, DOI: 10.5252/zoosystema2021v43a13, http://zenodo.org/record/4768141
Irreducible characters and Clebsch-Gordan series for the exceptional algebra $E_6$: an approach through the quantum Calogero-Sutherland model
Creators: name: Fernandez-Nunez, J.
name: Garcia-Fuertes, W.
name: Perelomov, A. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We re-express the quantum Calogero-Sutherland model for the Lie algebra $E_6$ and the particular value of the coupling constant $κ=1$ by using the fundamental irreducible characters of the algebra as dynamical variables. For that, we need to develop a systematic procedure to obtain all the Clebsch-Gordan series required to perform the change of variables. We describe how the resulting quantum Hamiltonian operator can be used to compute more characters and Clebsch-Gordan series for this exceptional algebra.
description: 22 pages, 1 figure
A bimodal distribution of haze in Pluto's atmosphere
Creators: name: Fan, Siteng
name: Gao, Peter
name: Zhang, Xi
name: Adams, Danica J.
name: Kutsop, Nicholas W.
name: Bierson, Carver J.
name: Liu, Chao
name: Yang, Jiani
name: Young, Leslie A.
name: Cheng, Andrew F.
name: Yung, Yuk L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Pluto, Titan, and Triton make up a unique class of solar system bodies, with icy surfaces and chemically reducing atmospheres rich in organic photochemistry and haze formation. Hazes play important roles in these atmospheres, with physical and chemical processes highly dependent on particle sizes, but the haze size distribution in reducing atmospheres is currently poorly understood. Here we report observational evidence that Pluto's haze particles are bimodally distributed, which successfully reproduces the full phase scattering observations from New Horizons. Combined with previous simulations of Titan's haze, this result suggests that haze particles in reducing atmospheres undergo rapid shape change near pressure levels ~0.5Pa and favors a photochemical rather than a dynamical origin for the formation of Titan's detached haze. It also demonstrates that both oxidizing and reducing atmospheres can produce multi-modal hazes, and encourages reanalysis of observations of hazes on Titan and Triton.
description: Published in Nature Communications, 26 pages, 12 figures
SOSIALISASI ETIKA DAN ASPEK HUKUM PEMANFAATAN MEDIA SOSIAL PADA KALANGAN REMAJA SISWA DI SMK NEGERI 3 PONTIANAK
Creators: name: Agung Prabowo
Publisher: name: figshare
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: Hadirnya media jejaring sosial di dunia maya tentu memberikan banyak dampak positif bagi masyarakat. Namun fenomena ini menjadi lebih kompleks dengan semakin besarnya ketergantungan masyarakat, terutama kaum remaja siswa SMK Negeri 3 Pontianak. Opini-opini begitu mudah disampaikan untuk mempengaruhi publik tanpa memperhatikan norma dan fakta yang ada sehingga menjurus kepada propaganda negatif, tindak pidana perundungan, bahkan pornografi. Maka dari itu, berangkat dari alasan di atas mengantarkan pada logika yang logis bahwa dirasa perlu untuk melakukan kegiatan sosialisasi tentang etika dan aspek hukum bermedia sosial terutama bagi kalangan remaja berupa penyuluhan hukum. Metode yang diambil dalam program pengabdian kepada masyarakat ini adalah dengan kegiatan sosialisasi secara daring. Hasil dari kegiatan ini yaitu: 1) perubahan pengetahuan dan perilaku siswa SMK Negeri 3 Pontianak terkait etika dalam memanfaatkan sosial media; 2) penambahan wawasan siswa SMK Negeri 3 Pontianak tentang aspek hukum sosial media; 3) siswa SMK Negeri 3 Pontianak memperoleh bekal pengalaman tentang pemanfaatan sosial media yang bijak dan berdampak positif.
A convenient and efficient H2SO4-promoted regioselective monobromination of phenol derivatives using N-bromosuccinimide
Creators: name: Wu, Yong-Qi
name: Hai-Jia Lu
name: Zhao, Wen-Ting
name: Zhao, Hong-Yi
name: Zi-Yun Lin
name: Zhang, Dong-Feng
name: Huang, Hai-Hong
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: A convenient, rapid H2SO4-promoted regioselective monobromination reaction with N-bromosuccinimide was developed. The desired para-monobrominated or ortho-monobrominated products of phenol derivatives were obtained in good to excellent yields with high selectivity. Regioselective chlorination and iodination were also achieved in the presence of H2SO4 using N-chlorosuccinimide and N-iodosuccinimide, respectively.
Trapping in quantum chains
Creators: name: Eilbeck, J. C.
name: Palmero, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A quantum breather on a translationally invariant one-dimensional anharmonic lattice is an extended Bloch state with two or more particles in a strongly correlated state. We discuss several effects that break the lattice symmetry and lead to spatial localization of the breather.
description: 7 figures
The angular dependence of magnetization dynamics induced by a GHz range strain pulse
Creators: name: Tojo, Kakeru
name: Nagakubo, Akira
name: Ogi, Hirotsugu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The dynamics of magnetization is important in spintronics, where the coupling between phonon and magnon attracts much attention. In this work, we study the angular dependence of the coupling between longitudinal-wave phonon and magnon. We investigated the magnetization dynamics using the time-resolved magneto-optical Kerr effect, which allows measuring spin-wave resonances and the magnetic echo signal. The frequency, mode number, and amplitude of the spin-wave resonance change with the out-of-plane angle of the external magnetic field. The amplitude of the magnetic echo signal caused by the strain pulse also changes with the angle. We calculate these angular dependences based on the Landau-Lifshitz-Gilbert equation and find that the angles of the external field and magnetic moment are important factors for the phonon-magnon coupling when phonon propagates in the thickness direction under the out-of-plane magnetic field.
O Peer, Where Art Thou? Uncovering Remote Peering Interconnections at IXPs
Creators: name: Nomikos, George
name: Kotronis, Vasileios
name: Sermpezis, Pavlos
name: Gigis, Petros
name: Manassakis, Lefteris
name: Dietzel, Christoph
name: Konstantaras, Stavros
name: Dimitropoulos, Xenofontas
name: Giotsas, Vasileios
Publisher: name: arXiv
Year: 2019
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Internet eXchange Points (IXPs) are Internet hubs that mainly provide the switching infrastructure to interconnect networks and exchange traffic. While the initial goal of IXPs was to bring together networks residing in the same city or country, and thus keep local traffic local, this model is gradually shifting. Many networks connect to IXPs without having physical presence at their switching infrastructure. This practice, called Remote Peering, is changing the Internet topology and economy, and has become the subject of a contentious debate within the network operators' community. However, despite the increasing attention it attracts, the understanding of the characteristics and impact of remote peering is limited. In this work, we introduce and validate a heuristic methodology for discovering remote peers at IXPs. We (i) identify critical remote peering inference challenges, (ii) infer remote peers with high accuracy (>95%) and coverage (93%) per IXP, and (iii) characterize different aspects of the remote peering ecosystem by applying our methodology to 30 large IXPs. We observe that remote peering is a significantly common practice in all the studied IXPs; for the largest IXPs, remote peers account for 40% of their member base. We also show that today, IXP growth is mainly driven by remote peering, which contributes two times more than local peering.
Supermassive Black Hole Binaries as Galactic Blenders
Creators: name: Kandrup, Henry E.
name: Sideris, Ioannis V.
name: Terzic, Balsa
name: Bohn, Courtlandt L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper focuses on the dynamical implications of close supermassive black hole binaries both as an example of resonant phase mixing and as a potential explanation of inversions and other anomalous features observed in the luminosity profiles of some elliptical galaxies. The presence of a binary comprised of black holes executing nearly periodic orbits leads to the possibility of a broad resonant coupling between the black holes and various stars in the galaxy. This can result in efficient chaotic phase mixing and, in many cases, systematic increases in the energies of stars and their consequent transport towards larger radii. Allowing for the presence of a supermassive black hole binary with plausible parameter values near the center of a spherical, or nearly spherical, galaxy characterised initially by a Nuker density profile enables one to reproduce in considerable detail the central surface brightness distributions of such galaxies as NGC 3706.
description: 14 pages plus 15 figures, revised and condensed version to appear in Astrophysical Journal
Evaluation of black carbon mass concentrations using a miniaturized aethalometer: Intercomparison with a continuous soot monitoring system (COSMOS) and a single-particle soot photometer (SP2)
Creators: name: Miyakawa, Takuma
name: Mordovskoi, Petr
name: Yugo Kanaya
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Ground-based observations of black carbon (BC) aerosols were conducted in spring 2017 in Yokosuka City, south of Tokyo, Japan. Equivalent BC (EBC) mass concentrations were measured using a miniaturized, palm-sized filter-photometer (MicroAeth AE51, EBCAE51) and evaluated against those obtained using a continuous soot monitoring system (COSMOS, EBCCOSMOS) and a single-particle soot photometer (SP2, refractory BC, rBCSP2). We propose methods to account for the following key factors affecting AE51 measurements: (1) the non-linearity of light attenuation (ATN) measurements associated with high-particle loading on the filter (i.e., the loading effect); and (2) the positive artifacts in ATN measurements created by non-refractory materials (nonBC) on the filter. To examine these effects, we employed a custom automated system that switches the two sampling lines for the AE51, one of which was heated to 300 °C to minimize the sampling of nonBC. Alternate operation of the heated and unheated modes (for 15 min) enabled the separation of the described effects. Consistent with previous studies, in the heated mode, sensitivity decreased linearly with increases in ATN (−0.44% per ATN) in comparison with the other aethalometers. When the loading effect was corrected for, the EBCAE51 in the unheated mode still showed some bias relative to EBCCOSMOS and rBCSP2. This bias correlated with—and was successfully corrected for using—the mass ratio of nonBC to BC derived from the SP2. This approach can also be applied to fine-mode aerosol (PM2.5) concentrations measured at environmental monitoring networks, thus eliminating the need for additional SP2 data in the data correction.