cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Delays in dwarf novae: VW Hyi, the tidal instability and enhanced mass transfer models
Creators: name: Schreiber, Matthias R.
name: Hameury, Jean-Marie
name: Lasota, Jean-Pierre
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the multi-wavelength predictions of the two models proposed for SU UMa stars, i.e the enhanced mass transfer (EMT) and the tidal thermal instability (TTI) models. We focus on the systematic differences of the suggested scenarios before discussing the model predictions together with the observations of the best-studied SU UMa system, VW Hyi. We find that assuming the standard form of the viscosity parameter alpha, both models predict only outbursts being triggered at the inner edge of the accretion disc. In the TTI model the superoutbursts are triggered when the outer radius of the disc reaches a certain value, i.e. the 3:1 resonance radius. In contrast, the EMT scenario predicts superoutbursts when the disc mass exceeds a critical value. This causes the EMT model to be much more sensitive to mass transfer variations than the TTI model. In both models we find the predicted UV and EUV delays in agreement with the observations of VW Hyi for alpha_hot/alpha_cold<=4. In addition both models can generate precursor outbursts which are more pronounced at short wavelengths, in agreement with observations. Variations found in the observed light curve of single systems (e.g. VW Hyi) as well as the difference between ordinary SU UMa stars and ER UMa systems are a natural outcome of the EMT model while the TTI model fails to explain them.
description: 17 pages, 10 figures, A&A accepted
title: Du désir à l’audace, entre superlatif et excessif : le mot audace en français
Creators: name: Ruppli, Mireille
Publisher: name: Savoirs en prisme
Year: 2019

description: Notre étude lexicale et sémantique du substantif audace montre, du latin au français, comment ce terme a connu une oscillation axiologique régulière entre les acceptions positive et négative (en bref, du courage à la témérité), favorisée par la labilité qui existe, indéniablement, entre le degré superlatif et l’expression de l’excessif.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur
Central velocity dispersion catalog of LAMOST-DR7 galaxies
Creators: name: Napolitano, Nicola R.
name: D'Ago, Giuseppe
name: Tortora, Crescenzo
name: Zhao, Gang
name: Luo, A-Li
name: Tang, Baitian
name: Zhang, Wei
name: Zhang, Yong
name: Li, Rui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is a major facility to carry out spectroscopic surveys for cosmology and galaxy evolution studies. The seventh data release of the LAMOST ExtraGAlactic Survey (LEGAS) is currently available and including redshifts of 193\,361 galaxies. These sources are spread over $\sim 11\,500$ deg$^2$ of the sky, largely overlapping with other imaging (SDSS, HSC) and spectroscopic (BOSS) surveys. The estimated depth of the galaxy sample, $r\sim17.8$, the high signal-to-noise ratio, and the spectral resolution $R=1800$, make the LAMOST spectra suitable for galaxy velocity dispersion measurements, which are invaluable to study the structure and formation of galaxies and to determine their central dark matter (DM) content. We present the first estimates of central velocity dispersion of $\sim86\,000$ galaxies in LAMOST footprint. We have used a wrap-up procedure to perform the spectral fitting using \textsc{pPXF}, and derive velocity dispersion measurements. Statistical errors are also assessed by comparing LAMOST velocity dispersion estimates with the ones of SDSS and BOSS over a common sample of $\sim51\,000$ galaxies. The two datasets show a good agreement, within the statistical errors, in particular when velocity dispersion values are corrected to 1 effective radius aperture. We also present a preliminary Mass-$σ$ relation and find consistency with previous analyses based on local galaxy samples. These first results suggest that LAMOST spectra are suitable for galaxy velocity dispersion measurements to complement the available catalogs of galaxy internal kinematics in the northern hemisphere. We plan to expand this analysis to next LAMOST data releases.
description: 19 pages, 15 figures
Exponentially Improved Dispersive Qubit Readout with Squeezed Light
Creators: name: Qin, Wei
name: Miranowicz, Adam
name: Nori, Franco
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It has been a long-standing goal to improve dispersive qubit readout with squeezed light. However, injected external squeezing (IES) {\it cannot} enable a practically interesting increase in the signal-to-noise ratio (SNR), and simultaneously, the increase of the SNR due to the use of intracavity squeezing (ICS) is even {\it negligible}. Here, we {\it counterintuitively} demonstrate that using IES and ICS together can lead to an {\it exponential} improvement of the SNR for any measurement time, corresponding to a measurement error reduced typically by many orders of magnitude. More remarkably, we find that in a short-time measurement, the SNR is even improved exponentially with {\it twice} the squeezing parameter. As a result, we predict a fast and high-fidelity readout. This work offers a promising path toward exploring squeezed light for dispersive qubit readout, with immediate applications in quantum error correction and fault-tolerant quantum computation.
description: 7 pages + 4 figures, 16 pages + 6 figures
GASDUINO-Wireless Air Quality Monitoring System Using Internet of Things
Creators: name: Karar, M. E.
name: Al-Masaad, A. M.
name: Reyad, O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The Health Effects Institute (HEI) reported recently that the deaths from the negative health effects of the air pollution in the Middle East Region is about 500,000 people. Therefore, this paper presents a new design and development of portable system; called GASDUINO that allows the user to measure the quality of air using the Internet of Things (IoT). The main components of developed GASDUINO system are the Arduino microcontroller board, Gas sensor (MQ-135), Android user interface (UI) connected with all things via Remote XY Arduino cloud. The developed system can alarm the users about the dangerous levels of the air quality index (AQI) or the particle per million (PPM) levels in the range of 0 to above 200 PPM. The developed GASDUINO system is considered as an essential environmental module in the development and sustainability of future smart cities.
description: 5 pages, 4 figures, 1 table
title: « Oh, the audacity ! » : vocabulaire de l’audace dans l’anglais d’hier et d’aujourd’hui
Creators: name: Louviot, Élise
Publisher: name: Savoirs en prisme
Year: 2019

description: Cet article présente les différents termes employés en anglais pour exprimer le concept d’audace. Il compare brièvement les emplois de « audacity » et « boldness » en anglais contemporain avant d’examiner les termes utilisés en vieil- et moyen-anglais.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur
Large and robust mechanical squeezing of optomechanical systems in a highly unresolved sideband regime via Duffing nonlinearity and intracavity squeezed light
Creators: name: Zhang, Jian-Song
name: Chen, Ai-Xi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme to generate strong and robust mechanical squeezing in an optomechanical system in the highly unresolved sideband (HURSB) regime with the help of the Duffing nonlinearity and intracavity squeezed light. The system is formed by a standard optomechanical system with the Duffing nonlinearity (mechanical nonlinearity) and a second-order nonlinear medium (optical nonlinearity). In the resolved sideband regime, the second-order nonlinear medium may play a destructive role in the generation of mechanical squeezing. However, it can significantly increase the mechanical squeezing (larger than 3dB) in the HURSB regime. Finally, we show the mechanical squeezing is robust against thermal fluctuations of the mechanical resonator. The generation of large and robust mechanical squeezing in the HURSB regime is a combined effect of the mechanical and optical nonlinearities.
description: 12 pages, 7 figures
Unconditional quantum magic advantage in shallow circuit computation
Creators: name: Zhang, Xingjian
name: Pan, Zhaokai
name: Liu, Guoding
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum theory promises computational speed-ups over classical approaches. The celebrated Gottesman-Knill Theorem implies that the full power of quantum computation resides in the specific resource of "magic" states -- the secret sauce to establish universal quantum computation. However, it is still questionable whether magic indeed brings the believed quantum advantage, ridding unproven complexity assumptions or black-box oracles. In this work, we demonstrate the first unconditional magic advantage: a separation between the power of generic constant-depth or shallow quantum circuits and magic-free counterparts. For this purpose, we link the shallow circuit computation with the strongest form of quantum nonlocality -- quantum pseudo-telepathy, where distant non-communicating observers generate perfectly synchronous statistics. We prove quantum magic is indispensable for such correlated statistics in a specific nonlocal game inspired by the linear binary constraint system. Then, we translate generating quantum pseudo-telepathy into computational tasks, where magic is necessary for a shallow circuit to meet the target. As a by-product, we provide an efficient algorithm to solve a general linear binary constraint system over the Pauli group, in contrast to the broad undecidability in constraint systems. We anticipate our results will enlighten the final establishment of the unconditional advantage of universal quantum computation.
description: 35 pages, 7 figures, 3 tables. In version 1, there was a bug in the analysis of the lower bound on the Clifford circuit depth; this version provides alternative constructions that bypass the issue
Quantum stress tensor at the Cauchy horizon of Reissner-Nordström-deSitter spacetime
Creators: name: Hollands, Stefan
name: Klein, Christiane
name: Zahn, Jochen
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The strong cosmic censorship conjecture proposes that starting from generic initial data on some Cauchy surface, the solutions of the Einstein equation should not be extendable across the boundary of the domain of dependence of that surface. For the case of the Reissner-Nordström-de Sitter spacetime this means that any perturbation should blow up sufficiently badly when approaching this boundary, called the Cauchy horizon. However, recent results indicate that for highly charged black holes classical scalar perturbations allow for a violation of strong cosmic censorship. In a recent paper arXiv:1912.06047, two of us have argued that quantum effects will restore censorship for generic values of the black hole parameters. But, due to practical limitations, the precise form of the divergence was only calculated for a small number of parameters. Here we perform a thorough parameter scan using an alternative, more efficient semi-analytic method. Our analysis confirms arXiv:1912.06047 in the sense that the quantum stress tensor is found to diverge badly generically. However, the sign of the divergence can be changed by changing the mass of the field or the spacetime parameters, leading to a drastically different type of singularity on the Cauchy horizon.
description: Correction to eq. 28; version as published in Phys.Rev.D
Spitzer and Hubble Constraints on the Physical Properties of the z~7 Galaxy Strongly Lensed by Abell 2218
Creators: name: Egami, E.
name: Kneib, J. -P.
name: Rieke, G. H.
name: Ellis, R. S.
name: Richard, J.
name: Rigby, J.
name: Papovich, C.
name: Stark, D.
name: Santos, M. R.
name: Huang, J. -S.
name: Dole, H.
name: Floc'h, E. Le
name: Perez-Gonzalez, P. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of a z~7 galaxy strongly lensed by the massive galaxy cluster Abell 2218 (z=0.175) at 3.6 and 4.5 um using the Spitzer Observatory and at 1.1 um using the Hubble Space Telescope. The new data indicate a refined photometric redshift in the range of 6.6-6.8 depending on the presence of Ly-alpha emission. The spectral energy distribution is consistent with having a significant Balmer break, suggesting that the galaxy is in the poststarburst stage with an age of at least ~50 Myr and quite possibly a few hundred Myr. This suggests the possibility that a mature stellar population is already in place at such a high redshift. Compared with typical Lyman break galaxies at z~3-4, the stellar mass is an order of magnitude smaller (~10^{9} Msun), but the specific star formation rate (star formation rate/M_{star}) is similarly large (> 10^{-9} yr^{-1}), indicating equally vigorous star-forming activity.
description: 11 pages, 2 figures, 2 tables; Accepted for publication in ApJL
AJAE Appendix: Homogeneity and Supply
Creators: name: LaFrance, Jeffrey T.
name: Pope, Rulon D.
name: LaFrance, Jeffrey T.
name: Pope, Rulon D.
Publisher: name: Unknown
Year: 2008
Subjects: Demand and Price Analysis

description: The material contained herein is supplementary to the Article named in the title and published in the American Journal of Agricultural Economics, forthcoming.
description: Downloads prior to moving to this URL on 12/08/08: 2008_05 15 2008_06 15 2008_07 11 2008_08 10 2008_09 12 2008_10 7
The structure and interpretation of cosmology: Part II - The concept of creation in inflation and quantum cosmology
Creators: name: McCabe, Gordon
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The purpose of the paper, of which this is part II, is to review, clarify, and critically analyse modern mathematical cosmology. The emphasis is upon mathematical objects and structures, rather than numerical computations. Part II provides a critical analysis of inflationary cosmology and quantum cosmology, with particular attention to the claims made that these theories can explain the creation of the universe.
Additional file 1 of Computational analysis of microarray data of Arabidopsis thaliana challenged with Alternaria brassicicola for identification of key genes in Brassica
Creators: name: Pathak, Rajesh Kumar
name: Baunthiyal, Mamta
name: Pandey, Dinesh
name: Kumar, Anil
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 1. Supplementary Tables
title: L’ audace : du manque d’égards (anaideia) à la transcendance du crime
Creators: name: Wersinger Taylor, Anne Gabrièle
Publisher: name: Savoirs en prisme
Year: 2019

description: À partir d’un examen des aspects qu’elle prend chez quelques auteurs anciens, grecs et latins, il s’agit de faire l’analyse de l’audace (tolma, audacia), dans ses rapports avec le crime. L’audace est caractérisée par deux schèmes : le premier, de caractère éthico-politique, est une invalidité morale, le manque d’égards (anaideia), l’arrogance insultante (hubris) qui possède un support psycho-physiologique, le thumos, mot intraduisible dont l’équivalent pourrait être notre mot « cœur ». Le second paradigme relève des métaphysiques héritées des cosmo-théogonies mystériques, où l’audace est à la fois divinisée et assimilée à une figure du mal donnant lieu à une « archive » au sens de Foucault, illustrée par la légende de l’empereur romain Néron, dont la fascination opère encore aujourd’hui.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur
De la prise de conscience au passage à l’acte ou de la nature politique des études sur les femmes en Chine contemporaine
Creators: name: Poux, Chantal
Publisher: name: University of British Columbia
Year: 2009

description: Does the field of Women's Studies in China provide a space/time for a dissident political point of view, way of thinking/being/living? To answer this question we have looked at the nature of the discourse, its authors, its public, its goals and means. The All China Women's Federation and Women's Studies within the academic circle have provided the ground for our investigation. A critical analysis has been done through a qualitative review of documents in English, written mainly by Chinese authors. The findings of our research have shown us that, indeed, Women's Studies in China provide a space/time for a dissident political point of view that we can term "feminism". However, the existence of this feminist space and voice is curtailed by the non-democratic political regime of China, making it, so far, a difficult but very promising balancing act. In fact, Women's Studies are at the root of the democratisation of China.
AJAE Appendix: Agro-Manufactured Export Prices, Wages and Unemployment
Creators: name: Porto, Guido G.
name: Porto, Guido G.
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness

description: The material contained herin is supplementary to the Article named in the supplementary to the Article named in the title and published in the American Journal of Agricultural Economics, forthcoming.
description: Downloads prior to moving to this URL on 12/8/08: 2008_05 18 2008_06 18 2008_07 10 2008_08 11 2008_09 13 2008_10 12
Modeling strict age-targeted mitigation strategies for COVID-19
Creators: name: Chikina, Maria
name: Pegden, Wesley
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We use a simple SIR-like epidemic model which integrates known age-contact patterns for the United States to model the effect of age-targeted mitigation strategies for a COVID-19-like epidemic. We find that, among strategies which end with population immunity, strict age-targeted mitigation strategies have the potential to greatly reduce mortalities and ICU utilization for natural parameter choices.
description: 16 pages, 16 figures, 1 table
Accelerated observers and gravitational radiation
Creators: name: Maluf, Jose Wadih
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We evaluate the energy-momentum of the gravitational field of a Schwarzschild black hole of mass M in the frame of a moving observer that asymptotically undergoes a Lorentz boost. The analysis is carried out in the framework of the teleparallel equivalent of general relativity (TEGR). We find that the total expression for the energy-momentum of the gravitational field is similar to the usual relativistic expression for the energy-momentum four-vector of a particle of inertial mass M under a Lorentz boost in flat space-time. Moreover we conclude that if the observer accelerates with respect to the black hole he will experience gravitational energy radiation, in similarity to the expected radiation of an accelerated charged particle in electrodynamics. We show that the increase of the mass of the black hole by the usual factor gamma as observed in the moving frame, which is a typical feature of special relativity if the black hole is considered asymptotically as a body of mass M, is due to gravitational radiation.
description: 12 pages, Latex file, no figures. Version to appear in Gravitation and Cosmology
Photon measurements in forward rapidity in heavy-ion collisions
Creators: name: Viyogi, Yogendra Pathak
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Contribution of a preshower photon multiplicity detector to the physics of ultra-relativistic nuclear collisions is reviewed and future possibilities at RHIC and LHC are discussed
description: 12 pages and 11 figures, Invited talk given at 5th International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPAQGP 2005), Salt Lake City, Kolkata, India, 8-12 Feb 2005
title: L’ audace dans l’anthropologie humaniste espagnole
Creators: name: Mestre Zaragozá, Marina
Publisher: name: Savoirs en prisme
Year: 2019

description: Dans la pensée anthropologique du XVIe siècle espagnol qui, dans son mouvement de construction de l’individualité cherche à lier les passions (ou la façon dont l’homme réagit au monde) avec le tempérament de chaque individu (ingenio), l’audace semble jouer un rôle particulièrement significatif. Vivès ne semble pourtant pas lui accorder une place particulièrement prépondérante dans son De anima et vita, où nul chapitre ne lui est spécifiquement consacré et où elle n’est abordée qu’en tant que synonyme du courage et traitée dans le cadre des chapitre consacrés à l’amour et à la crainte. Cependant, en veillant à asseoir cette passion comme une passion chaude et permettant à l’homme de s’élever contre un mal ou de parvenir à s’assurer un bien difficile Vivès annonce l’un des plus brillants acquis de l’Examen de ingenios para las ciencias de Huarte de San Juan. Car en effet, c’est bien l’audace qui caractérise les ingenios imaginatifs et caprins de Huarte, ceux-là même qui sont capables, par la fougue de la chaleur qui anime leur tempérament, de s’élever au-dessus de la nature commune des hommes, inventant de nouvelles sciences, de nouveaux savoirs et ouvrant ainsi de nouvelles voies et des horizons nouveaux à une humanité dont l’accomplissement collectif dépend désormais de ces individualités extraordinaires et par nature audacieuses.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur
Time- and angle-resolved photoemission spectroscopy with wavelength-tunable pump and extreme ultraviolet probe enabled by twin synchronized amplifiers
Creators: name: Suzuki, Takeshi
name: Zhong, Yigui
name: Liu, Kecheng
name: Kanai, Teruto
name: Itatani, Jiro
name: Okazaki, Kozo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We describe a setup for time- and angle-resolved photoemission spectroscopy with wavelength-tunable excitation and extreme ultraviolet probe. It is enabled by using the 10 kHz twin Ti:sapphire amplifiers seeded by the common Ti:sapphire oscillator. The typical probe energy is 21.7 eV, and the wavelength of the pump excitation is tuned between 2400 and 1200 nm by using the optical parametric amplifier. The total energy resolution of 133 meV is achieved, and the time resolution is dependent on the wavelength for the pump, typically better than 100 fs. This system enables the pump energy to be matched with a specific interband transition and to probe a wider energy-momentum space. We present the results for the prototypical materials of highly oriented pyrolytic graphite and Bi2Se3 to show the performance of our system.
title: Mise en scène et évaluation de l’audace dans l’Iliade (Patrocle, Thersite, Hélène) : le rôle des variations formulaires
Creators: name: Perceau, Sylvie
Publisher: name: Savoirs en prisme
Year: 2019

description: Si l’audace se manifeste dans l’écart à la norme, comment pourrait-elle acquérir une légitimité dans l’épopée homérique où les dieux régissent tous les comportements humains et où la tradition formulaire en fige l’expression ? Elle semble vouée à n’être perçue que comme hubris condamnable dont Patrocle offre un exemple éclairant : combattant à la place d’Achille, au chant XVI de l’Iliade, il se lance contre les Troyens en outrepassant les limites fermement posées par Achille et imposées par les dieux, audace aussitôt punie par Apollon et clairement blâmée par le poète. Pourtant, c’est paradoxalement la tradition formulaire avec son apparente rigidité qui offre au poète les moyens poétiques de valoriser certaines formes d’audace dont il exhibe la valeur positive d’émancipation face aux normes contraignantes ou à l’injustice : c’est grâce à un subtil jeu d’écarts et de variations dans les formules que le poète oriente la réception et le jugement des auditeurs lorsqu’il met en scène l’audace verbale de certains personnages, tel Thersite dont le discours quoique déplacé permet de réfléchir sur certaines hiérarchies figées, ou surtout Hélène qui, refusant de se laisser enfermer dans un rôle traditionnel, le conteste en en détournant l’expression formulaire.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur
Quantum Erasure: Quantum Interference Revisited
Creators: name: Walborn, Stephen P.
name: Cunha, Marcelo O. Terra
name: Pádua, Sebastião
name: Monken, Carlos H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent experiments in quantum optics have shed light on the foundations of quantum physics. Quantum erasers - modified quantum interference experiments - show that quantum entanglement is responsible for the complementarity principle.
description: 8 pages. Original unedited and unillustrated version of article in American Scientist magazine
Soft displaced leptons at the LHC
Creators: name: Blekman, Freya
name: Desai, Nishita
name: Filimonova, Anastasiia
name: Sahasransu, Abanti Ranadhir
name: Westhoff, Susanne
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Soft displaced leptons are representative collider signatures of compressed dark sectors with feeble couplings to the standard model. Prime targets are dark matter scenarios where co-scattering or co-annihilation sets the relic abundance upon freeze-out. At the LHC, searches for soft displaced leptons are challenged by a large background from hadron or tau lepton decays. In this article, we present an analysis tailored for displaced leptons with a low transverse momentum threshold at 20 GeV. Using a neural network, we perform a comprehensive analysis of the event kinematics, including a study of the expected detection efficiencies and backgrounds at small momenta. Our results show that weak-scale particles decaying into soft leptons with decay lengths between 1mm and 1m can be probed with LHC Run 2 data. This motivates the need for dedicated triggers that maximize the sensitivity to displaced soft leptons.
description: 25 pages, 9 figures, 5 tables
Non-Hermitian Boundary in a Surface Selective Reconstructed Magnetic Weyl Semimetal
Creators: name: Li, Cong
name: Wang, Yang
name: Zhang, Jianfeng
name: Liu, Hongxiong
name: Chen, Wanyu
name: Liu, Guowei
name: Deng, Hanbin
name: Polley, Craig
name: Thiagarajan, Balasubramanian
name: Kim, Timur
name: Yin, Jiaxin
name: Shi, Youguo
name: Xiang, Tao
name: Tjernberg, Oscar
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Non-Hermitian physics, studying systems described by non-Hermitian Hamiltonians, reveals unique phenomena not present in Hermitian systems. Unlike Hermitian systems, non-Hermitian systems have complex eigenvalues, making their effects less directly observable. Recently, significant efforts have been devoted to incorporating the non-Hermitian effects into condensed matter physics. However, progress has been hindered by the absence of a viable experimental approach. Here, the discovery of surface-selectively spontaneous reconstructed Weyl semimetal NdAlSi provides a feasible experimental platform for studying non-Hermitian physics. Utilizing angle-resolved photoemission spectroscopy measurements, surface-projected density functional theory calculations, and scanning tunneling microscopy measurements, we demonstrate that surface reconstruction in NdAlSi alters surface Fermi arc connectivity and generates new isolated non-topological surface Fermi arcs. In the presence of a magnetic field, the surface-selective spontaneous reconstructed Weyl semimetal NdAlSi can be viewed as a Hermitian bulk--non-Hermitian boundary system. The isolated non-topological surface Fermi arcs on the reconstructed surface act as a loss mechanism and open boundary condition for the topological electrons and bulk states, serving as non-Hermitian boundary states. This discovery provides a good experimental platform for exploring new physical phenomena and potential applications based on boundary non-Hermitian effects, extending beyond purely mathematical concepts.
description: 21 pages, 4 figures
Nonlocal radiative coupling in non monotonic stellar winds
Creators: name: Feldmeier, A.
name: Nikutta, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: There is strong observational evidence of shocks and clumping in radiation-driven stellar winds from hot, luminous stars. The resulting non monotonic velocity law allows for radiative coupling between distant locations, which is so far not accounted for in hydrodynamic wind simulations. In the present paper, we determine the Sobolev source function and radiative line force in the presence of radiative coupling in spherically symmetric flows, extending the geometry-free formalism of Rybicki and Hummer (1978) to the case of three-point coupling, which can result from, e.g., corotating interaction regions, wind shocks, or mass overloading. For a simple model of an overloaded wind, we find that, surprisingly, the flow decelerates at all radii above a certain height when nonlocal radiative coupling is accounted for. We discuss whether radiation-driven winds might in general not be able to re-accelerate after a non monotonicity has occurred in the velocity law.
description: accepted by A&A, 8 pages, 4 figures
title: Enquête sur le « tout oser / tout endurer » de Sappho (fr. 31 LP)
Creators: name: Nicolle, Antoine
Publisher: name: Savoirs en prisme
Year: 2019

description: Cet article propose une réflexion sur le concept sapphique de tolma (audace) à partir du vers tronqué qui termine le fragment 31 : « mais il faut tout oser / mais on peut tout oser / tout endurer (alla pan tolmaton) […] », selon les diverses traductions et interprétations existantes, rapidement passées en revue. Nous refusons l’entente résignée de la leçon *tout endurer ainsi que celle, héroïque et romantique, du *tout oser entendu comme appel à la transgression d’une situation sociale donnée. La mise en perspective de ce poème avec ses conditions de composition et avec l’ensemble de la pensée et de Sappho oblige, selon nous, à dégager une entente positive de l’audace comme principe éthique et pédagogique – une audace à la fois sans transgression et sans compromission.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur
Profile cut-off phenomenon for the ergodic Feller root process
Creators: name: Barrera, Gerardo
name: Esquivel, Liliana
Publisher: name: arXiv
Year: 2024
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H10, 37A25, 60B10, 34D10

description: The present manuscript is devoted to the study of the convergence to equilibrium as the noise intensity $\varepsilon>0$ tends to zero for ergodic random systems out of equilibrium of the type \begin{align*} \mathrm{d} X^{\varepsilon}_t(x) = (\mathfrak{b}-\mathfrak{a} X^{\varepsilon}_t(x))\mathrm{d} t+\varepsilon \sqrt{X^{\varepsilon}_t(x)}\mathrm{d} B_t, \quad X^{\varepsilon}_0(x) = x, \quad t\geqslant 0, \end{align*} where $x\geqslant 0$, $\mathfrak{a}>0$ and $\mathfrak{b}>0$ are constants, and $(B_t)_{t \geqslant 0}$ is a one dimensional standard Brownian motion. More precisely, we show the strongest notion of asymptotic profile cut-off phenomenon in the total variation distance and in the renormalized Wasserstein distance when $\varepsilon$ tends to zero with explicit cut-off time, explicit time window, and explicit profile function. In addition, asymptotics of the so-called mixing times are given explicitly.
description: 38 pages. Typos corrected. Affiliations updated
Dynamics of bound soliton states in regularized dispersive equations
Creators: name: Bogdan, M. M.
name: Charkina, O. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The nonstationary dynamics of topological solitons (dislocations, domain walls, fluxons) and their bound states in one-dimensional systems with high dispersion are investigated. Dynamical features of a moving kink emitting radiation and breathers are studied analytically. Conditions of the breather excitation and its dynamical properties are specified. Processes of soliton complex formation are studied analytically and numerically in relation to the strength of the dispersion, soliton velocity, and distance between solitons. It is shown that moving bound soliton complexes with internal structure can be stabilized by an external force in a dissipative medium then their velocities depend in a step-like manner on a driving strength.
description: 14 pages, 8 figures
Precision farming technology, adoption decisions and productivity of vegetables in resource-poor environments
Creators: name: Maheswari, R.
name: Ashok, K.R.
name: Prahadeeswaran, M.
name: Maheswari, R.
name: Ashok, K.R.
name: Prahadeeswaran, M.
Publisher: name: Unknown
Year: 2008
Subjects: Crop Production/Industries

description: ‘Precision Farming’ or ‘Precision Agriculture’ aims at increasing productivity, decreasing production costs and minimizing the environmental impact of farming. In this context, the present study has been undertaken to understand the impact of precision farming on resource-poor regions and underprivileged farmers. Specifically, the study has looked into productivity, income, employment, and adoption behaviour of technology in agriculture. The study, conducted in the Dharmapuri district, has collected data on precision and non-precision farmings through the interview schedule during the year 2007. Sources of the productivity difference between the precision and conventional farmings have been identified by decomposing the productivity change. Financial impact of adoption has been studied through a two-stage econometric model. The first stage of the model consists of an adoption decision model that describes the factors which influence the likelihood of adopting precision farming. Results of first stage have provided input for the second stage of the model, which has been used to estimate the impact of precision farming on farm financial performance. The study has revealed that adoption of precision farming has led to 80 per cent increase in yield in tomato and 34 per cent in brinjal production. Increase in gross margin has been found as 165 and 67 per cent, respectively in tomato and brinjal farming. The contribution of technology for higher yield in precision farming has been 33.71 per cent and 20.48 per cent, respectively in tomato and brinjal production. The elasticity of 0.39 for the adoption in tomato and 0.28 in brinjal has indicated that as the probability of adoption increases by 10 per cent, net return increases by 39 per cent and 28 per cent in tomato and brinjal cultivation. Lack of finance and credit facilities have been identified as the major constrains in nonadoption of precision farming. The study has suggested that providing of subsidies for water-soluble fertilizers and pump-sets will increase adoption of precision farming.
Caribboecetes Just 1983
Creators: name: Sir, Sally J.
name: White, Kristine N.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ischyroceridae
Caribboecetes

description: GenusCaribboecetesJust, 1983
Diagnosis.
Body subcylindrical. Rostrum pointed. Gnathopods 1 and 2 simple. Coxae 3 and 4 distal margins dentate, setose. Pereopods 5–7 lacking accessory tooth. Urosomite 3 fused to telson. Uropod 1 biramous, inner ramus shorter than outer ramus. Uropod 2 absent. Uropod 3 rami absent.
description: Published as part of Sir, Sally J. & White, Kristine N., 2025, Caribbean Amphipoda (Crustacea) of Panama. Part IV: parvorder Caprellidira, pp. 151-205 in ZooKeys 1234 on pages 151-205, DOI: 10.3897/zookeys.1234.145826
title: Conjuguer révolution, avant-garde et audace. Le cas de Franz Seiwert
Creators: name: Simoniello, Anastasia
Publisher: name: Savoirs en prisme
Year: 2019

description: Alors que l’on décrit traditionnellement l’audace comme une disposition des cœurs braves ou un élan des âmes téméraires, cette qualité pourrait être issue d’une autre source. C’est du moins ce que nous autorise à penser la production théorique et plastique de l’artiste anarcho-communiste Franz Wilhelm Seiwert qui a cherché, à travers elle, à nourrir l’esprit révolutionnaire de l’entre-deux-guerres. Étudier cet artiste nous permettra donc de définir et même de redéfinir les contours de l’audace, tout en déterminant ce qu’elle peut apporter à l’édification d’un nouvel ordre social. Ce faisant, nous découvrirons un propos et une œuvre méconnus, qui sont pourtant à maints égards emblématiques des grandes luttes menées par les avant-gardes contemporaines dont le mot d’ordre était justement l’audace.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur
Stability and Critical Phenomena of Black Holes and Black Rings
Creators: name: Arcioni, Giovanni
name: Lozano-Tellechea, Ernesto
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revisit the general topic of thermodynamical stability and critical phenomena in black hole physics, analyzing in detail the phase diagram of the five dimensional rotating black hole and the black rings discovered by Emparan and Reall. First we address the issue of microcanonical stability of these spacetimes and its relation to thermodynamics by using the so-called Poincare (or "turning point") method, which we review in detail. We are able to prove that one of the black ring branches is always locally unstable, showing that there is a change of stability at the point where the two black ring branches meet. Next we study divergence of fluctuations, the geometry of the thermodynamic state space (Ruppeiner geometry) and compute the appropriate critical exponents and verify the scaling laws familiar from RG theory in statistical mechanics. We find that, at extremality, the behaviour of the system is formally very similar to a second order phase transition.
description: 46 pages, 10 figures. v2: Minor modifications and clarifying remarks added. Appendix added. References added
Analysis of marketing of fish fingerlings and environmental awareness level of fisherman in Dakshin Dinajpur District of West Bengal
Creators: name: Roy, Tuhin Narayan
name: Roy, Tuhin Narayan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Marketing
subject: FOS: Economics and business

description: The existing marketing status of fish fingerlings has been analysed with a special reference to environmental concerns and awareness of the fishermen. The constraints have been identified and suggestions have been made for the development of marketing of fishery on the basis of primary data collected from Dakshin Dinajpur district of West Bengal in 2006. Small and marginal farmers dominate the fishery and about 10 per cent of fish farmers earn their major livelihood from fishing. Three to four middlemen have been noted in the existing four marketing channels. Insignificant price variation among the channels has been confirmed by low value (7.25 per cent) of co-efficient of variation (CV). The fisherman’s share to consumer price has been found to be 62.80 per cent which is higher than any other agricultural crop. The average elasticity of demand has been found to be one (approx.). Infrastructural facilities are lacking. However, judging from the modest profits of middlemen and their reasonable marketing margins, fish market appears to be competitive and relatively efficient in the study area. The pollutants in aquatic environment are diverse and complex in nature. The main sources of pollution are pesticides and leaching of dissolved chemical fertilizers, sewage and waste disposal, retting of fibre-crops, processing wastes, etc. It has been found that degree of consciousness about the environmental-related consequences on fish production and marketing is highly limited. Market survey has shown that production of small local catch fishes has a declining trend. The study has found that over-fishing and lack of production culture are the main reasons for this decline. The study has suggested that a collective effort should be initiated for eco-friendly and sustainable fish conservation, production and marketing with the existing resources, socio-economic and environmental constraints, which, in turn, will upgrade the economic status and quality of lives of the fishers in the district.
Inelastic light scattering by electronic excitations in artificial atoms
Creators: name: Delgado, Alain
name: Gonzalez, Augusto
name: Lockwood, D. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the paper, we present theoretical calculations of the cross section for inelastic light scattering by electronic excitations in a quantum dot charged with 42 electrons. The many-electron states involved in the computations are obtained in the framework of the Random Phase Approximation. The evaluation of energy-weighted sum rules allowed us to distinguish among single-particle (SPEs), collective charge (CDEs) and collective spin (SDEs) electronic excitations. Raman spectra in polarized and depolarized geometries are computed for a range of incident laser energies. The below-band-gap excitation regime reveals advantages for the identification of individual excited states contributing to the Raman spectra. The computed polarization ratios for Raman intensities show the breakdown of selection rules in the presence of a magnetic field. A new jump rule of Raman intensities at the band gap may help identifying the nature (charge or spin) of electronic excitations. Under extreme resonance (laser energy very close to the band gap), Raman spectra are dominated by SPEs. For incident laser energies 40 -- 50 meV above band gap, a correct desciption of Raman spectra is shown to require the proper account of energy widths of intermediate states.
description: 11 pages, in spanish, submitted to Revista Cubana de Fisica, corrected version
Systematic Analysis of Flow Distributions
Creators: name: Mehrabpour, Hadi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The information of the event-by-event fluctuations is extracted from flow harmonic distributions and cumulants, which can be done experimentally. In this work, we employ the standard method of Gram-Charlier series with the normal kernel to find such distribution, which is the generalization of recently introduced flow distributions for the studies of the event-by-event fluctuations. Also, we introduce a new set of cumulants $j_n\{2k\}$ which have more information about the fluctuations compared with other known cumulants. The experimental data imply that not only all of the information about the event-by-event fluctuations of collision zone properties and different stages of the heavy-ion process are not encoded in the radial flow distribution $p(v_n)$, but also the observables describing harmonic flows can generally be given by the joint distribution $\mathcal{P}(v_1,v_2,...)$. In such a way, we first introduce a set of joint cumulants $\mathcal{K}_{nm}$, and then we find the flow joint distribution using these joint cumulants. Finally, we show that the Symmetric Cumulants $SC(2,3)$ and $SC(2,4)$ obtained from ALICE data are explained by the combinations $\mathcal{K}_{22}+\frac{1}{2}\mathcal{K}_{04}-\mathcal{K}_{31}$ and $\mathcal{K}_{22}+4\mathcal{K}_{11}^2$.
description: 12 pages, 6 figures
The influence of Structural Dynamics in Two-Dimensional Hybrid Organic-Inorganic Perovskites on their Photoluminescence Efficiency -- Neutron scattering analysis
Creators: name: Rajeev, Haritha Sindhu
name: Hu, Xiao
name: Chen, Wei-Liang
name: Zhang, Depei
name: Chen, Tianran
name: Kofu, Maiko
name: Kajimoto, Ryoichi
name: Nakamura, Mitsutaka
name: Chen, Alexander Z.
name: Johnson, Grayson C.
name: Yoon, Mina
name: Chang, Yu-Ming
name: Dickie, Diane A.
name: Choi, Joshua J.
name: Lee, Seung-Hun
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional hybrid organic-inorganic perovskites (HOIPs) have emerged as promising materials for light-emitting diode applications. In this study, by using time-of-flight neutron spectroscopy we identified and quantitatively separated the lattice vibrational and molecular rotational dynamics of two perovskites, butylammonium lead iodide (BA)$_{2}$PbI$_{4}$ and phenethyl-ammonium lead iodide (PEA)$_{2}$PbI$_{4}$. By examining the corresponding temperature dependence, we found that the lattice vibrations, as evidenced by neutron spectra, are consistent with the lattice dynamics obtained from Raman scattering. We revealed that the rotational dynamics of organic molecules in these materials tend to suppress their photoluminescence quantum yield (PLQY) while the vibrational dynamics did not show predominant correlations with the same. Additionally, we observed photoluminescence emission peak splitting for both systems, which becomes prominent above certain critical temperatures where the suppression of PLQY begins. This study suggests that the rotational motions of polarized molecules may lead to a reduction in exciton binding energy or the breaking of degeneracy in exciton binding energy levels, enhancing non-radiative recombination rates, and consequently reducing photoluminescence yield. These findings offer a deeper understanding of fundamental interactions in 2D HOIPs and could guide the design of more efficient light-emitting materials for advanced technological applications.
title: La audacia y ruptura del colectivo trans en el París de comienzos del siglo XX
Creators: name: Ramos Frendo, Eva María
Publisher: name: Savoirs en prisme
Year: 2019

description: L’objectif poursuivi dans ce travail est d’exposer, au moyen de deux exemples concrets (Gerda Wegener et Violette Morris), qui coïncident dans l’espace et dans le temps (le Paris des premières décennies du XXe siècle), complétés grâce à une vision plus synthétique concernant d’autres artistes, comment furent perçus par la société ces hommes et ces femmes qui ont eu l’audace de revendiquer un genre qui n’avait rien à voir avec celui de leur naissance auquel ils s’identifiaient. Ces actes supposaient une rupture avec la conception de l’époque à propos du genre, binaire et immuable, et une transgression des idées reçues et des usages acceptés, des situations de risque et d’énormes obstacles, mais ouvraient également la voie et garantissaient le succès de cas futurs. Pour ce faire, nous analyserons les images générées (peintures, dessins animés et photographies) ainsi que les textes contemporains publiés qui contiennent une vision critique, parfois impitoyable, de ces transformations.
description: Savoirs en prisme, No. 11 (2019): L'audace : vertu, valeur