cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An open-source robust machine learning platform for real-time detection and classification of 2D material flakes
Creators: name: Uslu, Jan-Lucas
name: Ouaj, Taoufiq
name: Tebbe, David
name: Nekrasov, Alexey
name: Bertram, Jo Henri
name: Schütte, Marc
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Beschoten, Bernd
name: Waldecker, Lutz
name: Stampfer, Christoph
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The most widely used method for obtaining high-quality two-dimensional materials is through mechanical exfoliation of bulk crystals. Manual identification of suitable flakes from the resulting random distribution of crystal thicknesses and sizes on a substrate is a time-consuming, tedious task. Here, we present a platform for fully automated scanning, detection, and classification of two-dimensional materials, the source code of which we make openly available. Our platform is designed to be accurate, reliable, fast, and versatile in integrating new materials, making it suitable for everyday laboratory work. The implementation allows fully automated scanning and analysis of wafers with an average inference time of 100 ms for images of 2.3 Mpixels. The developed detection algorithm is based on a combination of the flakes' optical contrast toward the substrate and their geometric shape. We demonstrate that it is able to detect the majority of exfoliated flakes of various materials, with an average recall (AR50) between 67% and 89%. We also show that the algorithm can be trained with as few as five flakes of a given material, which we demonstrate for the examples of few-layer graphene, WSe$_2$, MoSe$_2$, CrI$_3$, 1T-TaS$_2$ and hexagonal BN. Our platform has been tested over a two-year period, during which more than $10^6$ images of multiple different materials were acquired by over 30 individual researchers.
Modelo de avaliação das compras públicas como instrumento de desenvolvimento local
Creators: name: Jankovski, Bruno Sampaio
Publisher: name: Zenodo
Year: 2025

description: Este relatório apresenta os resultados da aplicação de um Modelo de Avaliação das Compras Públicas como Instrumento de Desenvolvimento Local nos 399 municípios do estado do Paraná, destacando os fatores mais significativos para o desempenho municipal, representado pelo Índice IPARDES de Desempenho Municipal (IPDM). O modelo foi desenvolvido com base na ferramenta estatística de regressão linear múltipla pelo método stepwise, utilizando dados de fontes confiáveis, como o Observatório de Compras Públicas (SEBRAE), IBGE e o IPARDES. As variáveis analisadas incluem gastos totais e locais per capita, percentual de gastos com fornecedores locais, renda, ocupação, indicadores educacionais e de saúde. A análise revelou que o gasto total per capita e o percentual de gastos locais têm impacto positivo no IPDM, enquanto a mortalidade infantil apresentou correlação negativa. Os resultados evidenciaram padrões importantes, como a relevância das compras públicas para o fortalecimento da economia local e regional, bem como a melhoria dos indicadores sociais. Também foi destacada a necessidade de políticas públicas mais estratégicas e integradas para ampliar os impactos positivos das contratações públicas no desenvolvimento municipal. Este estudo oferece recomendações para aprimorar o uso das compras públicas como ferramenta de desenvolvimento, considerando a realidade dos municípios paranaenses. As conclusões podem servir de referência para gestores públicos e pesquisadores interessados em explorar estratégias de desenvolvimento local baseadas em políticas de contratações públicas.
Tidal streams in the Galactic halo: Evidence for the Sagittarius northern stream or traces of a new nearby dwarf galaxy
Creators: name: Martinez-Delgado, David
name: Aparicio, Antonio
name: Flechoso, Maria Angeles Gomez
name: Carrera, Ricardo
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Standard cosmology predicts that dwarfs were the first galaxies to be formed in the Universe and that many of them merge afterwards to form bigger galaxies such as the Milky Way. This process would have left behind traces such as tidal debris or star streams in the outer halo. We report here the detection of a very low density stellar system at 50+/- 10 kpc from the Galactic center that could be related to the merger process. It could form part of the Sagittarius northern stream or, alternatively, could be the trace of a hitherto unknown dwarf galaxy. The dwarf galaxy in Sagittarius, the closest satellite of the Milky Way, is currently being tidally disrupted and is a ``living'' test for galaxy formation theories. The system found here is 60 deg away from the center of the Sagittarius galaxy. If it is really associated with this galaxy, it would confirm predictions of dynamical interaction models indicating that tidal debris from Sagittarius could extend along a stream completely enveloping the Milky Way in a polar orbit.
description: 14 pages, 3 figures, acepted for publication in Astrophysical Journal Letters
title: ADCO, Cartulaire du prieuré Notre-Dame de Bonvaux, dépendant du Val-des-Ecoliers (XVe siècle), Dijon, Cart. 228 (27 H), 68 folios, 109 actes (1211-1356), f. 0066
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire du prieuré Notre-Dame de Bonvaux, dépendant du Val-des-Ecoliers (XVe siècle), Dijon, Archives départementales de la Côte-d'Or, Cart. 228 (27 H), 68 folios, 109 actes (1211-1356). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire du prieuré Notre-Dame de Bonvaux, dépendant du Val-des-Ecoliers (XVe siècle), Dijon, Archives départementales de la Côte-d'Or, Cart. 228 (27 H), 68 folios, 109 actes (1211-1356), f. 0066, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb15250518p
description: Provenance: http://www.idref.fr/02643413X/id
description: Provenance: https://www.geonames.org/6453767
description: Provenance: Dijon
description: Provenance: http://www.wikidata.org/entity/Q7003
Large Interstellar Polarisation Survey II. UV/optical study of cloud-to-cloud variations of dust in the diffuse ISM
Creators: name: Siebenmorgen, R.
name: Voshchinnikov, N. V.
name: Bagnulo, S.
name: Cox, N. L. J.
name: Cami, J.
name: Peest, C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is well known that the dust properties of the diffuse interstellar medium exhibit variations towards different sight-lines on a large scale. We have investigated the variability of the dust characteristics on a small scale, and from cloud-to-cloud. We use low-resolution spectro-polarimetric data obtained in the context of the Large Interstellar Polarisation Survey (LIPS) towards 59 sight-lines in the Southern Hemisphere, and we fit these data using a dust model composed of silicate and carbon particles with sizes from the molecular to the sub-micrometre domain. Large (> 6 nm) silicates of prolate shape account for the observed polarisation. For 32 sight-lines we complement our data set with UVES archive high-resolution spectra, which enable us to establish the presence of single-cloud or multiple-clouds towards individual sight-lines. We find that the majority of these 35 sight-lines intersect two or more clouds, while eight of them are dominated by a single absorbing cloud. We confirm several correlations between extinction and parameters of the Serkowski law with dust parameters, but we also find previously undetected correlations between these parameters that are valid only in single-cloud sight-lines. We find that interstellar polarisation from multiple-clouds is smaller than from single-cloud sight-lines, showing that the presence of a second or more clouds depolarises the incoming radiation. We find large variations of the dust characteristics from cloud-to-cloud. However, when we average a sufficiently large number of clouds in single-cloud or multiple-cloud sight-lines, we always retrieve similar mean dust parameters. The typical dust abundances of the single-cloud cases are [C]/[H] = 92 ppm and [Si]/[H] = 20 ppm.
description: A&A accepted
Estimating melting curves for Cu and Al from simulations at a single state point
Creators: name: Friedeheim, Laura
name: Hummel, Felix
name: Dyre, Jeppe C.
name: Bailey, Nicholas P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Determining the melting curves of materials up to high pressures has long been a challenge experimentally and theoretically. A large class of materials, including most metals, has been shown to exhibit hidden scale invariance, an approximate scale invariance of the potential-energy landscape that is not obvious from the Hamiltonian. For these materials the isomorph theory allows the identification of curves in the phase diagram along which structural and dynamical properties are invariant to a good approximation when expressed in appropriately scaled form. These curves, the isomorphs, can also be used as the basis for constructing accurate melting curves from simulations at a single state point [U. R. Pedersen et al., Nat. Comm. 7, 12386 (2016)]. In this work we apply this method to the metals Cu simulated using the effective medium theory and Al simulated using density functional theory (DFT). For Cu the method works very well and is validated using two-phase melting point simulations. For Al there are likewise good isomorphs, and the method generates the melting curve accurately as compared to previous experimental and DFT results. In support of a recent suggestion of Hong and van de Walle [Phys. Rev. B 100, 140102 (2019)], we finally suggest that the tendency for the density-scaling exponent $γ$ to decrease with increasing density in metals implies that metals in general will undergo re-entrant melting, i.e., have a maximum of melting temperature as a function of pressure.
The structure of the invariant charge in massive theories with one coupling
Creators: name: Kraus, Elisabeth
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Invariance under finite renormalization group (RG) transformations is used to structure the invariant charge in models with one coupling in the 4 lowest orders of perturbation theory. In every order there starts a RG-invariant, which is uniquely continued to higher orders. Whereas in massless models the RG-invariants are power series in logarithms, there is no such requirement in a massive model. Only, when one applies the Callan-Symanzik (CS) equation of the respective theories, the high-energy behavior of the RG-invariants is restricted. In models, where the CS-equation has the same form as the RG-equation, the massless limit is reached smoothly, i.e. the beta-functions are constants in the asymptotic limit and the RG-functions starting the new invariant tend to logarithms. On the other hand in the spontaneously broken models with fermions the CS-equation contains a beta-function of a physical mass. As a consequence the beta-functions depend on the normalization point also in the asymptotic region and a mass independent limit does not exist anymore.
description: 35 pages (1 figure available upon request), Plain TeX, BUTP 93-26 (1 more macro included)
Three planets around HD 27894. A close-in pair with a 2:1 period ratio and an eccentric Jovian planet at 5.4 AU
Creators: name: Trifonov, T.
name: Kürster, M.
name: Zechmeister, M.
name: Zakhozhay, O. V.
name: Reffert, S.
name: Lee, M. H.
name: Rodler, F.
name: Vogt, S. S.
name: Brems, S. S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Aims. Our new program with HARPS aims to detect mean motion resonant planetary systems around stars which were previously reported to have a single bona fide planet, often based only on sparse radial velocity data. Methods. Archival and new HARPS radial velocities for the K2V star HD 27894 were combined and fitted with a three-planet self-consistent dynamical model. The best-fit orbit was tested for long-term stability. Results. We find clear evidence that HD 27894 is hosting at least three massive planets. In addition to the already known Jovian planet with a period $P_{\rm b}$ $\approx$ 18 days we discover a Saturn-mass planet with $P_{\rm c}$ $\approx$ 36 days, likely in a 2:1 mean motion resonance with the first planet, and a cold massive planet ($\approx$ 5.3 $M_{\mathrm{Jup}}$) with a period $P_{\rm d}$ $\approx$ 5170 days on a moderately eccentric orbit ($e_{\rm d}$ = 0.39). Conclusions. HD 27894 is hosting a massive, eccentric giant planet orbiting around a tightly packed inner pair of massive planets likely involved in an asymmetric 2:1 mean motion resonance. HD 27894 may be an important milestone for probing planetary formation and evolution scenarios.
description: 4 pages, 2 tables, 3 figures. Accepted for publication in A&A Letters to the Editor
Multi-k magnetic structures in USb_{0.9}Te_{0.1} and UAs_{0.8}Se_{0.2} observed via resonant x-ray scattering at the U M4 edge
Creators: name: Detlefs, B.
name: Wilkins, S. B.
name: Javorský, P.
name: Blackburn, E.
name: Lander, G. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Experiments with resonant photons at the U M4 edge have been performed on a sample of USb_{0.9}Te_{0.1}, which has an incommensurate magnetic structure with k = 0.596(2) reciprocal lattice units. The reflections of the form , as observed previously in a commensurate k = 1/2 system [N. Bernhoeft et al., Phys. Rev. B 69 174415 (2004)] are observed, removing any doubt that these occur because of multiple scattering or high-order contamination of the incident photon beam. They are clearly connected with the presence of a 3k configuration. Measurements of the reflections from the sample UAs_{0.8}Se_{0.2} in a magnetic field show that the transition at T* ~ 50 K is between a low-temperature 2k and high-temperature 3k state and that this transition is sensitive to an applied magnetic field. These experiments stress the need for quantitative theory to explain the intensities of these reflections.
description: submitted to Phys. Rev. B
¿Otra entrevista de trabajo? ¿Otra?
Creators: name: Alba, Jorge
Publisher: name: figshare
Year: 2018
Subjects: subject: 150301 Business Information Management (incl. Records, Knowledge and Information Management, and Intelligence)
subject: FOS: Economics and business
subject: 150302 Business Information Systems
subject: 150399 Business and Management not elsewhere classified
subject: 150303 Corporate Governance and Stakeholder Engagement
subject: 150305 Human Resources Management
subject: 150105 Management Accounting
subject: 150310 Organisation and Management Theory
subject: 150311 Organisational Behaviour
subject: 150312 Organisational Planning and Management
subject: 150313 Quality Management
subject: 150314 Small Business Management

description: Existen muchas formas de selección de personal, pero ineludiblemente la mas repetida es la entrevista de trabajo. Es necesario estar preparado para ella. Mucha gente se encuentra en la tesitura de ir a una entrevista de trabajo, pero cuando ha pasado mucho tiempo desde la última en muchos casos se hace necesario revisar el enfoque con el que se debe afrontar la misma.
Developing de Broglie Wave
Creators: name: Zheng-Johansson, J X
name: Johansson, P-I
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The electromagnetic component waves, comprising together with their generating oscillatory massless charge a material particle, will be Doppler shifted when the charge hence particle is in motion, with a velocity $v$, as a mere mechanical consequence of the source motion. We illustrate here that two such component waves generated in opposite directions and propagating at speed $c$ between walls in a one-dimensional box, superpose into a traveling beat wave of wavelength ${\mitΛ}_d$$=(\frac{v}{c}){\mitΛ}$ and phase velocity $c^2/v+v$ which resembles directly L. de Broglie's hypothetic phase wave. This phase wave in terms of transporting the particle mass at the speed $v$ and angular frequency ${\mitΩ}_d=2πv /{\mitΛ}_d$, with ${\mitΛ}_d$ and ${\mitΩ}_d$ obeying the de Broglie relations, represents a de Broglie wave. The standing-wave function of the de Broglie (phase) wave and its variables for particle dynamics in small geometries are equivalent to the eigen-state solutions to Schrödinger equation of an identical system.
description: 9 pages, 3 figures
Lettre de Philippe Laurent de Joubert à Jean-François Séguier, 1779-12-17
Creators: name: de Joubert, Philippe Laurent
name: De Joubert, Philippe Laurent
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021

description: [transcription] A Montpellier ce vendredi 17 décembre 1779.

[Joubert]

J'ai l'honneur, Monsieur, de vous faire mes remerciements de la caisse que Monsieur Roustan m'a remis de votre part. c'est toujours de nouvelles obligations que je vous ai. Acceptez ma vraie reconnaissance de l'amitié que vous me témoignez et qui m'est bien précieuse.

Je ne sais si je vous ai transmis la réponse de M. l'archevêque de Narbonne au sujet du compte que votre excessive exactitude vous a engagé à m'adresser pour le lui présenter. Il en a été presque blessé. Il est jaloux que vous ne doutiez pas de son entière et pleine confiance en vous. Je ne sais encore s'il sera possible d'obtenir ce dont vous avez besoin pour achever. Je n'ai [fol. 117 v] pas négligé d'en parler. Je n'ai pas reçu de reste et je ne négligerai pas d'en rappeler le souvenir.

J'ai l'honneur de vous renouveler l'espoir pour que vous me traitiez avec l'amitié que vous voulez bien m'accorder en supprimant un cérémonial qui m'afflige. Acceptez, je vous prie, le tendre et inviolable attachement avec lequel je serai toujours mon très cher Monsieur,

Votre très humble et très obéissant serviteur

Joubert
description: [note autre main] [Joubert]
description: [personnes citées] Arthur-Richard Dillon, Jean-Baptiste Roustan
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 248_27, fol. 117
description: Source: ark:/12148/btv1b10015539v
The relation between cosmological redshift and scale factor for photons
Creators: name: Tian, Shuxun
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The cosmological constant problem has become one of the most important ones in modern cosmology. In this paper, we try to construct a model that can avoid the cosmological constant problem and have the potential to explain the apparent late-time accelerating expansion of the universe in both luminosity distance and angular diameter distance measurement channels. In our model, the core is to modify the relation between cosmological redshift and scale factor for photons. We point out three ways to test our hypothesis: the supernova time dilation; the gravitational waves and its electromagnetic counterparts emitted by the binary neutron star systems; and the Sandage--Loeb effect. All of this method is feasible now or in the near future.
description: 5 pages, ApJ in press
SE-PQA: Personalized Community Question Answering
Creators: name: Kasela, Pranav
name: Braga, Marco
name: Pasi, Gabriella
name: Perego, Raffaele
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Personalization in Information Retrieval is a topic studied for a long time. Nevertheless, there is still a lack of high-quality, real-world datasets to conduct large-scale experiments and evaluate models for personalized search. This paper contributes to filling this gap by introducing SE-PQA (StackExchange - Personalized Question Answering), a new curated resource to design and evaluate personalized models related to the task of community Question Answering (cQA). The contributed dataset includes more than 1 million queries and 2 million answers, annotated with a rich set of features modeling the social interactions among the users of a popular cQA platform. We describe the characteristics of SE-PQA and detail the features associated with questions and answers. We also provide reproducible baseline methods for the cQA task based on the resource, including deep learning models and personalization approaches. The results of the preliminary experiments conducted show the appropriateness of SE-PQA to train effective cQA models; they also show that personalization remarkably improves the effectiveness of all the methods tested. Furthermore, we show the benefits in terms of robustness and generalization of combining data from multiple communities for personalization purposes.
A Theoretical Model for the $M_{\rm bh}-σ$ Relation for Supermassive Black Holes in Galaxies
Creators: name: Adams, Fred C.
name: Graff, David S.
name: Richstone, Douglas O.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct a model for the formation of black holes within galactic bulges. The initial state is a slowly rotating isothermal sphere, characterized by effective transport speed $\aeff$ and rotation rate $Ω$. The black hole mass is determined when the centrifugal radius of the collapse flow exceeds the capture radius of the central black hole. This model reproduces the observed correlation between black hole masses and galactic velocity dispersions, $\mbh \approx 10^8 M_\odot (σ/200 \kms)^4$, where $σ= \sqrt{2} \aeff$. This model also predicts the ratio $\mrat$ of black hole mass to host mass: $\mrat$ $\approx$ 0.004 $(σ/200 \kms)$.
description: 9 pages, 2 figures, submitted to Astrophysical Journal Letters
Halo Pressure Profile through the Skew Cross-Power Spectrum of Sunyaev-Zel'dovich Effect and CMB Lensing in $\textit{Planck}$
Creators: name: Timmons, Nicholas
name: Cooray, Asantha
name: Feng, Chang
name: Keating, Brian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We measure the Cosmic Microwave Background (CMB) skewness power spectrum in $\textit{Planck}$, using frequency maps of the HFI instrument and the Sunyaev-Zel'dovich (SZ) component map. The two-to-one skewness power spectrum measures the cross-correlation between CMB lensing and the thermal SZ effect. We also directly measure the same cross-correlation using $\textit{Planck}$ CMB lensing map and the SZ map and compare it to the cross-correlation derived from the skewness power spectrum. We model fit the SZ power spectrum and CMB lensing-SZ cross power spectrum via the skewness power spectrum to constrain the gas pressure profile of dark matter halos. The gas pressure profile is compared to existing measurements in the literature including a direct estimate based on the stacking of SZ clusters in $\textit{Planck}$.
description: 6 pages, 4 figures, ApJL submitted
Figure S1 from Natural hybridization between divergent lineages in a selfing hermaphroditic fish
Creators: name: Tatarenkov, Andrey
name: Earley, Ryan L.
name: D. Scott Taylor
name: Davis, William P.
name: Avise, John C.
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60301 Animal Systematics and Taxonomy
subject: 60310 Plant Systematics and Taxonomy

description: Known geographic distribution of three phylogeographic lineages of selfing Kryptolebias in Western Atlantic: Northern (K. marmoratus), Central, and Southern (K. hermaphroditus) clades. Only localities of samples that were confirmed genetically are shown (after Tatarenkov et al. 2017; Guimarães-Costa et al. 2017). a) Overall distribution in Western Atlantic; b) Populations studied in Florida and Bahamas; c) Sampled sites on San Salvador Island, collectively referred to as SSN. One newly studied site from San Salvador Island, Oyster Lake (OY), harbored fish belonging to two phylogeographic lineages as well as a hybrid.
Eliminating Dark Energy from the Friedmann Equations: A Temporal Approach
Creators: name: Lynch, Colin
Publisher: name: Zenodo
Year: 2025
Subjects: Time, Physics, Cosmology, Temporal Sciences, Gravity, Hubble Constant, Dark Energy, Cosmic Expansion

description: The standard model of cosmology relies on the cosmological constant Lambda (dark energy) to explain the universe’s accelerating expansion, but its necessity remains an open question. This work proposes a temporal reinterpretation of the Friedmann equations, showing that cosmic acceleration can be explained through time evolution rather than an external force. By redefining gravity as a time-dependent quantity, I derive modified Friedmann equations that eliminate the need for Lambda. This approach suggests that dark energy is not a distinct physical entity but an artifact of misinterpreting time’s role in cosmic expansion, offering a new framework for understanding cosmic evolution.
Quantum random walks on a beam splitter array
Creators: name: Delgado, Mario Ivan Estrada
name: Garcia, Zurika Iveth Blanco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81R99

description: The general matrix representation of a beam splitter array is presented. Each beam splitter has a transmission/reflection coefficient that determines the behavior of these individual devices and, in consequence, the whole system response. The general matrix representation of each beam splitter is given as rotations of a $2n-{th}$ dimensional space. With these operators, the matrix that describes the entire array and, consequently, the final probability distribution of an input photon state can be calculated.
Efficient electron open boundaries for simulating electrochemical cells
Creators: name: Zauchner, Mario G.
name: Horsfield, Andrew P.
name: Todorov, Tchavdar N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Non-equilibrium electrochemistry raises new challenges for atomistic simulation: we need to perform molecular dynamics for the nuclear degrees of freedom with an explicit description of the electrons, which in turn must be free to enter and leave the computational cell. Here we present a limiting form for electron open boundaries that applies when the magnitude of the electric current is determined by the drift and diffusion of ions in solution, and which is sufficiently computationally efficient to be used with molecular dynamics. We demonstrate its capabilities by way of tight binding simulations of a parallel plate capacitor with and without a dimer situated in the space between the plates.
Comparison of far-from-equilibrium work relations
Creators: name: Jarzynski, Christopher
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Recent theoretical predictions and experimental measurements have demonstrated that equilibrium free energy differences can be obtained from exponential averages of nonequilibrium work values. These results are similar in structure, but not equivalent, to predictions derived nearly three decades ago by Bochkov and Kuzovlev, which are also formulated in terms of exponential averages but do not involve free energy differences. In the present paper the relationship between these two sets of results is elucidated, then illustrated with an undergraduate-level solvable model. The analysis also serves to clarify the physical interpretation of different definitions of work that have been used in the context of thermodynamic systems driven away from equilibrium.
description: 12 pages, includes 3 figures
Sean Carleton’s Lessons in Legitimacy: Colonialism, Capitalism, and the Rise of State Schooling in British Columbia
Creators: name: Perry, Adele
name: Ellis, Catherine
name: Alexander, Kristine
name: Stirling, Bridget
name: Carleton, Sean
Publisher: name: BC Studies: The British Columbian Quarterly
Year: 2024

description: This forum brings together a group of Canadian scholars to discuss Sean Carleton’s Lessons in Legitimacy: Colonialism, Capitalism, and the Rise of State Schooling in British Columbia (Vancouver: UBC Press, 2022)
description: BC Studies: The British Columbian Quarterly, No. 222: Summer 2024
Thermal Corrections to Rényi Entropy in BMS Field Theory
Creators: name: Zhong, Yuan
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the study of three-dimensional flat holography, the BMS field theory manifests the infinite-dimensional BMS$_3$ symmetry, a powerful tool in elucidating numerous universal phenomena. This paper explores a certain low-temperature limit of the BMS field theory. The primary focus lies in the calculation of the thermal correction to the Rényi entropy of the single interval on the cylinder from the replica trick and the uniformizing map. As a double check, an alternative method calculating the entanglement entropy is introduced, with the entanglement first law and the modular Hamiltonian.
description: 18 pages
Thermal noise and oscillations of photon distribution for squeezed and correlated light
Creators: name: Dodonov, V. V.
name: Man'ko, O. V.
name: Man'ko, V. I.
name: Rosa, L.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The oscillations of photon distribution function for squeezed and correlated light are shown to decrease when the temperature increases.The influence of the squeezing parameter and photon quadrature correlation coefficient on the photon distribution oscillations at nonzero temperatures is studied. The connection of deformation of Planck distribution formula with oscillations of distribution for squeezed and correlated light is discussed.
description: Latex,7 pages INFN-Na-IV-93/31,DSF-T-93/31
Stellar parameters and H$α$ line profile variability of Be stars in the BeSOS survey
Creators: name: Arcos, C.
name: Kanaan, S.
name: Chávez, J.
name: Vanzi, L.
name: Araya, I.
name: Curé, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Be phenomenon is present in about 20$\%$ of the B-type stars. Be stars show variability on a broad range of timescales, which in most cases is related to the presence of a circumstellar disk of variable size and structure. For this reason a time resolved survey is highly desirable in order to understand the mechanisms of disk formation which are still poorly understood. In addition, a complete observational sample would improve the statistical significance of the study of the stellar and disk parameters. The "Be Stars Observation Survey" (BeSOS) is a survey containing reduced spectra obtained using the echelle spectrograph PUCHEROS with a spectral resolution of 17000 in the range of 4260-7300 $\textÅ$. BeSOS's main objective is to offer consistent spectroscopic and time resolved data obtained with one instrument. The user can download or plot the data and get the stellar parameters directly from the website. We also provide a star-by-star analysis based on photometric, spectroscopic and interferometric data as well as general information about the whole BeSOS sample. Recently, BeSOS led to the discovery of a new Be star HD 42167 and facilitated study of the V/R variation of HD 35165 and HD 120324, the steady disk of HD 110335 and the Be shell status of HD 127972. Optical spectra used in this work, as well as the derived stellar parameters are available online in \url{http://besos.ifa.uv.cl}.
description: 16 pages, 13 Figures and 4 tables
Measurement induced transitions in non-Markovian free fermion ladders
Creators: name: Tsitsishvili, Mikheil
name: Poletti, Dario
name: Dalmonte, Marcello
name: Chiriacò, Giuliano
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently there has been an intense effort to understand measurement induced transitions, but we still lack a good understanding of non-Markovian effects on these phenomena. To that end, we consider two coupled chains of free fermions, one acting as the system of interest, and one as a bath. The bath chain is subject to Markovian measurements, resulting in an effective non-Markovian dissipative dynamics acting on the system chain which is still amenable to numerical studies in terms of quantum trajectories. Within this setting, we study the entanglement within the system chain, and use it to characterize the phase diagram depending on the ladder hopping parameters and on the measurement probability. For the case of pure state evolution, the system is in an area law phase when the internal hopping of the bath chain is small, while a non-area law phase appears when the dynamics of the bath is fast. The non-area law exhibits a logarithmic scaling of the entropy compatible with a conformal phase, but also displays linear corrections for the finite system sizes we can study. For the case of mixed state evolution, we instead observe regions with both area, and non-area scaling of the entanglement negativity. We quantify the non-Markovianity of the system chain dynamics and find that for the regimes of parameters we study, a stronger non-Markovianity is associated to a larger entanglement within the system.
Strategic Impact of IT in Green Marketing and Demand Forecasting- A Study
Creators: name: Nemani Sowjanya, Chelluru Srinivas Uday Abhijit
Publisher: name: Zenodo
Year: 2025

description: Green marketing is defined as the marketing practices that are in tune with sustainable consumerbehavior. This paper studies the various impacts of integration of IT in green marketing at all levels ofmarketing chain. It also focuses on the role of IT in forecasting demand of the products and efficiency ofmanagement decisions regarding production and marketing of the sustainable products. The paper tries toestablish the techniques of European marketing in the promotion of organic foods is applicable to allagricultural products and by introduction of IT in green marketing, we can expect transparency andefficiency in the system.
Sexing and kinship analysis from Attacked ravens flexibly adjust signalling behaviour according to audience composition
Creators: name: Szipl, Georgine
name: Ringler, Eva
name: Bugnyar, Thomas
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Methods explaining the analysis of blood samples to obtain information on sex and relatedness in ravens
ISO continuum observations of quasars at z=1-4 I.Spectral energy distributions of quasars from the UV to far-infrared
Creators: name: Oyabu, S.
name: Kawara, K.
name: Tsuzuki, Y.
name: Sofue, Y.
name: Sato, Y.
name: Okuda, H.
name: Taniguchi, Y.
name: Shibai, H.
name: Gabriel, C.
name: Hasegawa, T.
name: Nishihara, E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Eight luminous quasars with $ -30 < M_B < -27$ at z = 1.4 - 3.7 have been observed in the mid- and far-infrared using ISO. All the quasars have been detected in the mid-infrared bands of ISOCAM, while no far-infrared detections have been made with ISOPHOT. Supplementing ISO observations with photometry in the optical and near-infrared made from the ground mostly within 17 months after the ISO observations, SEDs (Spectral Energy Distributions) from the UV to far-infrared have been obtained. SEDs (Spectral Energy Distributions) from the UV to far-infrared have been obtained while supplementing ISO observations with photometry in the optical and near-infrared made from the ground within 17 months. The SEDs are compared with the MED (Mean spectral Energy Distributions) of low-redshift quasars with $-27 < M_B < -22$. It is shown that our far-infrared observations were limited by confusion noise due to crowded sources.
description: 9 pages, 3 figures: accepted for publication in Astronomy and Astrophysics
Common continuum polarization properties: a possible link between proto-planetary nebulae and Type Ia Supernovae progenitors
Creators: name: Cikota, Aleksandar
name: Patat, Ferdinando
name: Cikota, Stefan
name: Spyromilio, Jason
name: Rau, Gioia
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The lines-of-sight to highly reddened SNe Ia show peculiar continuum polarization curves, growing toward blue wavelengths and peaking at $λ_{max} \lesssim 0.4 μm$, like no other sight line to any normal Galactic star. We examined continuum polarization measurements of a sample of asymptotic giant branch (AGB) and post-AGB stars from the literature, finding that some PPNe have polarization curves similar to those observed along SNe Ia sight lines. Those polarization curves are produced by scattering on circumstellar dust. We discuss the similarity and the possibility that at least some SNe Ia might explode during the post-AGB phase of their binary companion. Furthermore, we speculate that the peculiar SNe Ia polarization curves might provide observational support to the core-degenerate progenitor model.
description: 6 pages, 2 figures. Accepted for publication in MNRAS
Energetic cost of microswimmer navigation: the role of body shape
Creators: name: Piro, Lorenzo
name: Vilfan, Andrej
name: Golestanian, Ramin
name: Mahault, Benoît
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We study the energetic efficiency of navigating microswimmers by explicitly taking into account the geometry of their body. We show that, as their shape transitions from prolate to oblate, non-steering microswimmers rotated by flow gradients naturally follow increasingly time-optimal trajectories. At the same time, they also require larger dissipation to swim. The coupling between body geometry and hydrodynamics thus leads to a generic trade-off between the energetic costs associated with propulsion and navigation, which is accompanied by the selection of a finite optimal aspect ratio. We derive from optimal control theory the steering policy ensuring overall minimum energy dissipation, and characterize how navigation performances vary with the swimmer shape. Our results highlight the important role of the swimmer geometry in realistic navigation problems.
title: Flurnamen als willkommener „Beifang“: ein Bürgerforschungsprojekt und sein praktischer Nutzen für die Heimatpflege
Creators: name: Schwämmlein, Thomas
Publisher: name: Friedrich-Schiller-Universität
Year: 2025
Subjects: subject: Flurnamenforschung
subject: Citizen Science
subject: Heimatpflege
subject: 430

description: 25 Jahre Flurnamenforschung in Thüringen
title: ADCO, Ordre cistercien : comptes (1403-1423) (11 H 1161), f. 00145
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Ordre cistercien : comptes (1403-1423), Archives départementales de la Côte-d'Or, (11 H 1161). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien : comptes (1403-1423), Archives départementales de la Côte-d'Or, (11 H 1161), f. 00145, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
Temporal correlation detection using computational phase-change memory
Creators: name: Sebastian, Abu
name: Tuma, Tomas
name: Papandreou, Nikolaos
name: Gallo, Manuel Le
name: Kull, Lukas
name: Parnell, Thomas
name: Eleftheriou, Evangelos
Publisher: name: arXiv
Year: 2017
Subjects: subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: For decades, conventional computers based on the von Neumann architecture have performed computation by repeatedly transferring data between their processing and their memory units, which are physically separated. As computation becomes increasingly data-centric and as the scalability limits in terms of performance and power are being reached, alternative computing paradigms are searched for in which computation and storage are collocated. A fascinating new approach is that of computational memory where the physics of nanoscale memory devices are used to perform certain computational tasks within the memory unit in a non-von Neumann manner. Here we present a large-scale experimental demonstration using one million phase-change memory devices organized to perform a high-level computational primitive by exploiting the crystallization dynamics. Also presented is an application of such a computational memory to process real-world data-sets. The results show that this co-existence of computation and storage at the nanometer scale could be the enabler for new, ultra-dense, low power, and massively parallel computing systems.
Clustering Analysis of Periodic Point Vortices with the $L$ Function
Creators: name: Umeki, Makoto
Publisher: name: arXiv
Year: 2006
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A motion of point vortices with periodic boundary conditions is studied by using Weierstrass zeta functions. Scattering and recoupling of a vortex pair by a third vortex becomes remarkable when the vortex density is large. Clustering of vortices with various initial conditions is quantitated by the $L$ function used in point process theory in spatial ecology. It is shown that clustering persists if it is initially clustered like an infinite row or a checkered pattern.
description: 4 pages, 12 figures, to appear in JPSJ
Nilpotent action on the KdV variables and 2-dimensional Drinfeld-Sokolov reduction
Creators: name: Enriquez, B.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We note that a version ``with spectral parameter'' of the Drinfeld-Sokolov reduction gives a natural mapping from the KdV phase space to the group of loops with values in $\widehat N_{+}/A, \widehat N_{+}$~: affine nilpotent and $A$ principal commutative (or anisotropic Cartan) subgroup~; this mapping is connected to the conserved densities of the hierarchy. We compute the Feigin-Frenkel action of $\widehat n_{+}$ (defined in terms of screening operators) on the conserved densities, in the $sl_2$ case.
The Post-Periapse Evolution of Galactic Center Source G1: The second case of a resolved tidal interaction with a supermassive black hole
Creators: name: Witzel, Gunther
name: Sitarski, Breann. N.
name: Ghez, Andrea M.
name: Morris, Mark R.
name: Hees, Aurelien
name: Do, Tuan
name: Lu, Jessica R.
name: Naoz, Smadar
name: Boehle, Anna
name: Martinez, Greg
name: Chappell, Samantha
name: Schödel, Rainer
name: Meyer, Leo
name: Yelda, Sylvana
name: Becklin, Ereic E.
name: Matthews, Keith
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present new Adaptive Optics (AO) imaging and spectroscopic measurements of Galactic Center source G1 from W. M. Keck Observatory. Our goal is to understand its nature and relationship to G2, which is the first example of a spatially-resolved object interacting with the supermassive black hole (SMBH). Both objects have been monitored with AO for the past decade (2003 - 2014) and are comparatively close to the black hole ($a_{\rm{min}} \sim$200-300 AU) on very eccentric orbits ($e_{\rm{G1}}\sim$0.99; $e_{\rm{G2}}\sim$0.96). While G2 has been tracked before and during periapse passage ($T_{0} \sim$ 2014.2), G1 has been followed since soon after emerging from periapse ($T_{0} \sim$ 2001.3). Our observations of G1 double the previously reported observational time baseline, which improves its orbital parameter determinations. G1's orbital trajectory appears to be in the same plane as that of G2, but with a significantly different argument of periapse ($Δω$ = 21$\pm$4 degrees). This suggests that G1 is an independent object and not part of a gas stream containing G2 as has been proposed. Furthermore, we show for the first time that: (1) G1 is extended in the epochs closest to periapse along the direction of orbital motion and (2) G1 becomes significantly smaller over time, (450 AU in 2004 to less than 170 AU in 2009). Based on these observations, G1 appears to be the second example of an object tidally interacting with a SMBH. G1's existence 14 years after periapse, along with its compactness in epochs further from the time of periapse, suggest that this source is stellar in nature.
description: submitted to ApJ
An analytic approach for the study of pulsar spindown
Creators: name: Chishtie, F.
name: Valluri, S. R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we develop an analytic approach to study pulsar spindown. We use the monopolar spindown model by Alvarez and Carramiñana (2004), which assumes an inverse linear law of magnetic field decay of the pulsar, to extract an all-order formula for the spindown parameters which are expressed in terms of modified Bessel functions. We further extend the analytic model to incorporate the quadrupole term that accounts for the emission of gravitational radiation, and obtain expressions for the period $P$ and frequency $f$ in terms of transcendental equations. We derive the period of the pulsar evolution as an approximate first order solution in the small parameter present in the full solution. We find that the first three spindown parameters of the Crab, PSR B1509-58, PSR B0540-69 and Vela pulsars are within their known bounds providing a consistency check on our approach. After the four detections of gravitational waves from binary black hole coalescence and a binary neutron merger 170814, which was a novel joint gravitational and electromagnetic detection, a detection of gravitational waves from pulsars will be the next landmark in the field of multi-messenger gravitational wave astronomy.