cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
More Indications for Lepton Nonuniversality in $b \to s \ell^+ \ell^-$
Creators: name: Hurth, T.
name: Mahmoudi, F.
name: Santos, D. Martinez
name: Neshatpour, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently the LHCb collaboration has confirmed the evidence for lepton flavour nonuniversality at the $3.1σ$ level via an updated measurement of $R_K$. In this work we analyse this evidence within a model-independent approach. We make projections for future measurements which indicate that LHCb will be in the position to discover lepton nonuniversality with the Run 3 data in a single observable. We analyse other ratios based on our analysis of the present measurements of the ratios $R_{K^{(*)}}$ and analyse if they are able to differentiate between various new physics options within the effective field theory at present or in the near future. We also compare the present deviations in the ratios with NP indications in the angular observables of exclusive $b \to s \ell\ell$ transitions. Finally, we update our global analysis considering all $b \to s \ell\ell$ observables altogether, including a 20-parameter fit in connection of a Wilks' test.
description: 16 pages, 12 tables, 5 figures. v2: comments on LEE and references added
Cytotoxic 4-phenylcoumarins from the flowering buds of Mesua ferrea
Creators: name: Chen, Xiya
name: Liu, Zhiying
name: Zhong, Bi
name: Zhu, Mengjie
name: Yao, Han
name: Chen, Xiaojie
name: Lu, Yongchao
name: Wang, Shuyun
name: Guo, Yaping
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Eleven 4-phenylcoumarins including three new 4-phenylcoumarins, mesuaferols A–C (1–3), together with eight known 4-phenylcoumarins (4–11) have been isolated from the flowering buds of Mesua ferrea. Their structures were elucidated via UV, IR, HR-ESI-MS, and NMR spectral data. Compound 9 showed moderate cytotoxic activity toward MDA-MB-231, MCF-7, HepG2 and HeLa cell lines with IC50 values of 13.68 ± 1.36 μM, 9.27 ± 1.84 μM, 21.06 ± 1.95 μM, and 7.26 ± 1.68 μM, respectively, and other compounds showed weak cytotoxicity.
Two chiral nonet model with massless quarks
Creators: name: Fariborz, Amir H.
name: Jora, Renata
name: Schechter, Joseph
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a detailed study of a linear sigma model containing one chiral nonet transforming under U(1)$_A$ as a quark-antiquark composite and another chiral nonet transforming as a diquark-anti diquark composite (or, equivalently from a symmetry point of view, as a two meson molecule). The model provides an intuitive explanation of a current puzzle in low energy QCD: Recent work has suggested the existence of a lighter than 1 GeV nonet of scalar mesons which behave like four quark composites. On the other hand, the validity of a spontaneously broken chiral symmetric description would suggest that these states be chiral partners of the light pseudoscalar mesons, which are two quark composites. The model solves the problem by starting with the two chiral nonets mentioned and allowing them to mix with each other. The input of physical masses in the SU(3) invariant limit for two scalar octets and an "excited" pion octet results in a mixing pattern wherein the light scalars have a large four quark content while the light pseudoscalars have a large two quark content. One light isosinglet scalar is exceptionally light. In addition, the pion pion scattering is also studied and the current algebra theorem is verified for massless pions which contain some four quark admixture.
description: 22 pages, 8 figures
Catalog of One-side Head-Tail Galaxies in the FIRST Survey
Creators: name: Pan, Tong
name: Yu, Heng
name: van Weeren, Reinout J.
name: Jia, Shumei
name: Li, Chengkui
name: Lyu, Yipeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: One-side head-tail (OHT) galaxies are radio galaxies with a peculiar shape. They usually appear in galaxy clusters, but they have never been cataloged systematically. We design an automatic procedure to search for them in the Faint Images of the Radio Sky at Twenty-Centimeters source catalog and compile a sample with 115 HT candidates. After cross-checking with the Sloan Digital Sky Survey photometric data and catalogs of galaxy clusters, we find that 69 of them are possible OHT galaxies. Most of them are close to the center of galaxy clusters. The lengths of their tails do not correlate with the projection distance to the center of the nearest galaxy clusters, but show weak anticorrelation with the cluster richness, and are inversely proportional to the radial velocity differences between clusters and host galaxies. Our catalog provides a unique sample to study this special type of radio galaxies.
description: 17 pages, 84 figures(69 figures in appendix). Published by ApJS, comments welcome!
INDICADORES DE DESEMPENHO AMBIENTAL: UM ESTUDO BIBLIOMÉTRICO DAS PESQUISAS CIENTIFICAS DA ÁREA DE CIÊNCIAS CONTÁBEIS NO PERÍODO DE 2010 A 2016
Creators: name: FAGUNDES CARNELÓS NUNES, DANIELA
name: MAINGUÉ, EMANUELLI MARIANA
name: CARDOZA GALDAMEZ, EDWIN VLADIMIR
Publisher: name: Revista de Informação Contábil
Year: 2017
Subjects: Indicadores de desempenho; Indicadores ambientais; Contabilidade.

description: O objetivo do estudo foi analisar a produção de pesquisas em anais de congressos e periódicos brasileiros na área de Contabilidade sobre indicadores de desempenho ambiental. O referencial teórico conceitua indicadores de desempenho, evidenciando a importância e uso destes para a tomada de decisão, e fechando com o tema deste trabalho os indicadores de desempenho ambientais, no qual cresceu o interesse nos últimos anos. A metodologia apresenta um estudo bibliométrico, sendo utilizada a pesquisa descritiva, onde na amostra são considerados os periódicos classificados em A1 a B2 e os principais congressos científicos brasileiros na área de Contabilidade. Os principais resultados evidenciaram a predominância de autores do sexo masculino tratando sobre índices de desempenho ambiental na área de ciências contábeis, e verificaram-se oscilações das publicações nos períodos englobados na pesquisa, sendo apurados trabalhos com maior frequência no ano de 2010, na área de ciências contábeis evidenciando índices de desempenho ambientais.
description: Revista de Informação Contábil, v. 10, n. 3 (2016): RIC - Revista de Informação Contábil
The tensor part of the Skyrme energy density functional. I. Spherical nuclei
Creators: name: Lesinski, T.
name: Bender, M.
name: Bennaceur, K.
name: Duguet, T.
name: Meyer, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform a systematic study of the impact of the J^2 tensor term in the Skyrme energy functional on properties of spherical nuclei. In the Skyrme energy functional, the tensor terms originate both from zero-range central and tensor forces. We build a set of 36 parameterizations, which covers a wide range of the parameter space of the isoscalar and isovector tensor term coupling constants, with a fit protocol very similar to that of the successful SLy parameterizations. We analyze the impact of the tensor terms on a large variety of observables in spherical mean-field calculations, such as the spin-orbit splittings and single-particle spectra of doubly-magic nuclei, the evolution of spin-orbit splittings along chains of semi-magic nuclei, mass residuals of spherical nuclei, and known anomalies of charge radii. Our main conclusion is that the currently used central and spin-orbit parts of the Skyrme energy density functional are not flexible enough to allow for the presence of large tensor terms.
description: 38 pages, 36 figures; Minor corrections
The practical knowledge of a fine arts supervisor in educational change : a case study
Creators: name: Irwin, Rita Louise
Publisher: name: University of British Columbia
Year: 2010

description: Few naturalistic studies exist that take an in-depth look at the lifeworlds of consultants and supervisors. This single case study describes and interprets the practical knowledge of an exemplary Fine Arts Supervisor. In this study, the investigator acted as a participant-observer while "shadowing" Ruth Britten (a pseudonym) over a four month period. Data were derived through field research techniques, and were subjected to data analysis and interpretation. Drawing upon a body of literature dealing with the nature of practical knowledge, this study concludes that a supervisor's practical knowledge is different from a teacher's practical knowledge in two important ways. First, curriculum implementation replaces curriculum development in the five commonplaces found in teacher practical knowledge: self, instruction, curriculum development, subject matter, and milieu. Second, the political knowledge context forms a major addition to the five orientations defined by Elbaz regarding teacher practical knowledge: theoretical, social, personal, situational, experiential. A third conclusion underlies the above: Elbaz's conceptual framework for a teacher's practical knowledge proved to be a useful starting point in determining a supervisor's practical knowledge. Practical knowledge is constructed upon rules of practice, practical principles, and images. In this study, these forms revealed the dialectical nature of much of Ruth's practical knowledge. Two constructs or landscapes of imagery became apparent, one being the empowerment and power of teachers, and the other, bureaucratic power and control and educational stability. Analysis of Ruth's style as a supervisor examined further dialectical relationships, as she continuously resolved contraries while implementing fine arts curricula. The findings suggest that among other requirements, supervisors need to develop a unique form of practical knowledge geared to the political context of curriculum implementation. Therefore, School Boards should consider tenure contracts for supervisors rather than limited term contracts, and should promote special training for supervisors in curriculum change strategies rather than assume that master teacher practical knowledge is sufficient.
Goodwill Adquirido em Combinação de Negócios: Uma Análise de Conformidade das Companhias Brasileiras com as Normas Contábeis
Creators: name: Gehlen, Karina Rocha Henriques
name: Leite, Pãmela
name: Martins, Reliane Moreira
name: Alvez Cruz, Cássia Vanessa Olak
Publisher: name: Revista de Informação Contábil
Year: 2017
Subjects: goodwill, combinação de negócios, normas contábeis

description: O objetivo geral do trabalho é verificar se as práticas contábeis das companhias brasileiras de capital aberto estão em conformidade com as normas de contabilidade no que diz respeito à mensuração, reconhecimento e baixa do goodwill adquirido em combinação de negócios no ano de 2013. Para o alcance do objetivo proposto, este estudo baseou-se no índice de disclosure proposto por Nakayama (2012, 2014), no entanto, com adaptações para a análise específica do goodwill. A coleta de dados foi realizada por meio de pesquisa documental das demonstrações contábeis publicadas por Cias brasileiras listadas na BM&FBovespa, para o exercício findo em 31/12/2013. A amostra investigada foi composta por 93 companhias que apresentaram em seus relatórios combinação de negócio envolvendo Goodwill. Constatou-se, pelos resultados, que 56,99% das empresas investigadas fazem uma descrição qualitativa da composição do goodwill, 77,42% das empresas descrevem os motivos da compra vantajosa, 81,72% apresentam o valor justo na data da aquisição. Contudo, a maioria das empresas (79,57%) não reconhecem a perda por desvalorização deste ativo intangível.
description: Revista de Informação Contábil, v. 10, n. 4 (2016): RIC - Revista de Informação Contábil
CONTROLADORIA: Estudo na perspectiva da Teoria dos Stakeholders
Creators: name: De Freitas, Gleicyanna Almeida
name: Rebouças, Lailson Da Silva
name: Rocha, Erika Maia
name: Da Silva, Jandeson Dantas
name: Leite Batista Da Costa, Wênyka Preston
Publisher: name: Revista de Informação Contábil
Year: 2017

description: A controladoria surgiu no início do século XX nos Estados Unidos, motivada pela necessidade de ter controle mais amplo e permanente sob as atividades organizacionais. Beuren e Silva (2010), concluíram em seus estudos que este órgão é visto como suporte de gestão. Este trabalho justifica-se devido a controladoria ser instrumento que contribui na melhoria dos processos de tomadas de decisões empresariais. Possui como problemática: Como uma empresa de grande Porte na cidade de Mossoró-RN utiliza as ferramentas da controladoria no processo de tomada de decisões? Portanto seu objetivo é mostrar a perspectiva da controladoria e seus stakeholders no processo de desempenho e otimização de resultados nos aspectos econômicos, financeiros no departamento de controladoria em uma organização de grande porte. Metodologicamente trata-se de pesquisa descritiva, quanto aos procedimentos enquadra-se como estudo de caso, sobre a abordagem do problema trata-se de um estudo qualitativo. A fonte de captação dos dados deu-se por meio de dois questionários. Um com 19 perguntas fechadas a dois profissionais de controladoria: o controller e seu assistente. E outro, com questões voltadas para os stakeholders da empresa: clientes, funcionários, fornecedor e governo. Conclui-se que a controladoria possui seus instrumentos voltados a melhoria do desenvolvimento das atividades da empresa e tem uma ligação com seus stakeholders de forma que só agrega valores a própria empresa. Planejamento, sistemas de informações, contatos diretos e indiretos contribuem para o ciclo econômico, financeiro da empresa. Palavras – chave: Controladoria. Stakeholder. Sistemas. Gestão Empresarial
description: Revista de Informação Contábil, v. 10, n. 4 (2016): RIC - Revista de Informação Contábil
Χρήση τεχνητής νοημοσύνης για τον έλεγχο της δυναμικής απόκρισης των κατασκευών
Creators: name: Δαδούλης, Γεώργιος Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2025
Subjects: Τεχνητή νοημοσύνη
Δυναμική των κατασκευών
Γέφυρες
Δομική ακεραιότητα
Artificial intelligence
Structural dynamics
Bridges
Structural health monitoring

description: Η εργασία εστιάζει στη δυναμική ανάλυση δοκών με εσωτερικές ρωγμές και ενδόσιμες στηρίξεις, καθώς και στον προσδιορισμό της δομικής υγείας των δοκών κάνοντας χρήση νευρωνικών δικτύων. Οι εξισώσεις κίνησης διαμορφώνονται με τη χρήση του λογισμού των μεταβολών, προσφέροντας μια κομψή προσέγγιση, ιδιαίτερα για την περίπτωση εσωτερικών ρωγμών. Ακολουθεί η εκτίμηση των δυναμικών παραμέτρων του συστήματος, όπως τα ιδιομορφικά μέτρα απόσβεσης και η πειραματική εξαγωγή ιδιομορφών και ιδιοσυχνοτήτων. Στη συνέχεια, το προκύπτον γραμμικό μη αυτόνομο σύστημα επιλύεται αριθμητικά μέσω της μεθόδου των πινάκων με χρονική διακριτοποίηση. Η ανάλυση των μη στάσιμων χρονοσειρών του συστήματος απαιτεί μετασχηματισμούς, όπως ο Short Time Fourier Transform (STFT), οι οποίοι παράγουν σπεκτογράμματα, αποτυπώνοντας την εξέλιξη των συχνοτήτων στο χρόνο. Τα σπεκτογράμματα τροφοδοτούν την εκπαίδευση ενός συνελικτικού νευρωνικού δικτύου (CNN), ικανού να κατηγοριοποιεί και να εντοπίζει χωρικά τις βλάβες. Τέλος, η αξιολόγηση του μοντέλου πραγματοποιείται με πειραματικά δεδομένα από κατάλληλη πειραματική διάταξη.
description: This thesis investigates the dynamic behavior of beams with internal cracks and flexible supports, employing neural networks for structural health assessment. The equations of motion are derived via the calculus of variations, offering a robust framework, particularly for internal cracks. Dynamic parameters, including modal damping ratios and experimentally extracted mode shapes and frequencies, are estimated. The resulting linear non-autonomous system is numerically solved using the matrix method with time discretization. Non-stationary time series analysis employs transformations like the Short-Time Fourier Transform (STFT) to generate spectrograms, which train a convolutional neural network (CNN) for automated damage detection and localization. Finally, the model is validated using experimental data from a dedicated testing setup.
O SIMPLES NACIONAL COMO FORMA DE CRESCIMENTO EMPRESARIAL NO SEGMENTO DE MICROCERVEJARIAS
Creators: name: Pinheiro, Raul Gomes
name: Da Silva, Cauim Baltar Lopes
name: De Oliveira, Raphaelle Paiva
Publisher: name: Revista de Informação Contábil
Year: 2017
Subjects: Simples Nacional. Microcervejarias. Crescimento

description: Esse artigo trata do regime de tributação do Simples no segmento de microcervejarias, com o propósito de demonstrar os benefícios que esse regime de tributação proporcionará aos microcervejeiros. Além de a carga tributária ser menor frente a outros regimes tributários, existe a facilidade de entrega de obrigações acessórias, redução de burocracia e impacto no lucro. Tenta identificar através de pesquisa qualitativa como irá favorecer ao segmento. Diante de tantos impostos, altas cargas tributárias no País, as oportunidades no mercado para diversos segmentos ficam limitadas e apresentam insegurança de crescimento. Os resultados obtidos indicam que o regime simplificado, com impostos menores, favorecerão as microcervejarias com crescimento, oportunidades de mercado e geração de empregos. Mesmo diante de suas regras e limitações ainda é visto para os empresários que se enquadrem no regime de tributação do Simples Nacional como possibilidade de expansão no mercado em que estão inseridos.
description: Revista de Informação Contábil, v. 10, n. 4 (2016): RIC - Revista de Informação Contábil
Spherical Needlets for CMB Data Analysis
Creators: name: Marinucci, D.
name: Pietrobon, D.
name: Balbi, A.
name: Baldi, P.
name: Cabella, P.
name: Kerkyacharian, G.
name: Natoli, P.
name: Picard, D.
name: Vittorio, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss Spherical Needlets and their properties. Needlets are a form of spherical wavelets which do not rely on any kind of tangent plane approximation and enjoy good localization properties in both pixel and harmonic space; moreover needlets coefficients are asymptotically uncorrelated at any fixed angular distance, which makes their use in statistical procedures very promising. In view of these properties, we believe needlets may turn out to be especially useful in the analysis of Cosmic Microwave Background (CMB) data on the incomplete sky, as well as of other cosmological observations. As a final advantage, we stress that the implementation of needlets is computationally very convenient and may rely completely on standard data analysis packages such as HEALPix.
description: 7 pages, 7 figures
Supplementary document for Tunable and controllable multi-channel time comb absorber based on continuous photonic time crystals - 6360671.pdf
Creators: name: Dong, Rui-Yang
name: Di, Zhi
name: Wang, Shuo
name: Zhou, Jia-Hao
name: Zhang, HaiFeng
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: support material
Cosmological Singularities and a Conjectured Gravity/Coset Correspondence
Creators: name: Damour, Thibault
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the recently discovered connection between the Belinsky-Khalatnikov-Lifshitz-like ``chaotic'' structure of generic cosmological singularities in eleven-dimensional supergravity and the ``last'' hyperbolic Kac-Moody algebra E(10). This intriguing connection suggests the existence of a hidden ``correspondence'' between supergravity (or even M-theory) and null geodesic motion on the infinite-dimensional coset space K(E(10)). If true, this gravity/coset correspondence would offer a new view of the (quantum) fate of space (and matter) at cosmological singularities.
description: 12 pages, 1 diagram, contribution to ``String Theory and Fundamental Interactions'' -- in celebration of Gabriele Veneziano's 65th birthday -- eds. M. Gasperini and J. Maharana, Springer-Verlag, Heidelberg, 2007
Logarithmic limit sets of real semi-algebraic sets
Creators: name: Alessandrini, Daniele
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: This paper is about the logarithmic limit sets of real semi-algebraic sets, and, more generally, about the logarithmic limit sets of sets definable in an o-minimal, polynomially bounded structure. We prove that most of the properties of the logarithmic limit sets of complex algebraic sets hold in the real case. This include the polyhedral structure and the relation with the theory of non-archimedean fields, tropical geometry and Maslov dequantization.
description: 35 pages, 15 figures; some examples added, sections 2.3 and 4.1 shortened, some typos corrected
title: Les pratiques enseignantes déclarées comme étant favorables à l’inclusion d’un élève bénéficiant de mesures renforcées de pédagogie spécialisée en classe ordinaire
title: Les pratiques enseignantes déclarées comme étant favorables à l’inclusion d’un élève bénéficiant de mesures renforcées de pédagogie spécialisée en classe ordinaire
titleType: AlternativeTitle
Creators: name: Capt, Lisa
name: Corday, Aurélie
Publisher: name: Unknown
Year: 0
Subjects: subject: Inclusion
subject: intégration
subject: projet 360°
subject: pratiques enseignantes
subject: mesures renforcées de pédagogie spécialisée
subject: opinion des enseignants

description: Dans le contexte actuel de la scolarité suisse et avec la récente mise en place du concept cantonal novateur de pédagogie spécialisée appelé « vison à 360° », l’inclusion est plus que jamais mise en avant dans le canton de Vaud. La mise en œuvre de cette dernière représente un défi pour beaucoup d’enseignants et elle soulève de nombreuses questions chez eux. Ce mémoire professionnel a été effectué en collaboration avec des enseignants ordinaires vaudois ayant déjà accueilli des élèves bénéficiant de mesures renforcées de pédagogie spécialisée dans leur classe. À travers une analyse thématique du récit d’expérience de ces 5 enseignants du cycle 1, cette recherche vise à recenser quelques pratiques enseignantes déclarées comme étant favorables à l’inclusion d’élèves bénéficiant de mesures renforcées de pédagogie spécialisée en classe orinaire. Le deuxième but poursuivi est de recueillir les ressentis de ces enseignants face au dispositif 360° très peu de temps après sa mise en route. Les potentielles difficultés auxquelles les enseignants ont dû se confronter lors de leurs expériences d’inclusion et les conditions qu’ils considèrent indispensables au bon déroulement d’une inclusion scolaire seront mises en avant. L’objectif principal de ce travail est de donner quelques pistes dans la prise en charge d’élèves au bénéfice de mesures renforcées de pédagogie spécialisée et de mettre en lumière les dispositifs que les enseignants interrogés jugent les plus utiles. En ce qui concerne les résultats principaux, il a été mis en évidence que les enseignants sont plutôt favorables à l’inclusion et au projet 360°, mais ceci sous la condition de bénéficier de l’aide et de l’encadrement de professionnels qualifiés. Les enseignants ont mobilisé des pratiques ayant démontré leur pertinence dans la littérature, mais ont surtout privilégié des stratégies liées à la gestion de classe en développant chez les élèves une plus grande tolérance ainsi qu’une attitude positive face à la différence.
Acceleration and localization of matter in a ring trap
Creators: name: Bludov, Yu. V.
name: Konotop, V. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A toroidal trap combined with external time-dependent electric field can be used for implementing different dynamical regimes of matter waves. In particular, we show that dynamical and stochastic acceleration, localization and implementation of the Kapitza pendulum can be originated by means of proper choice of the external force.
1I/'Oumuamua as an N2 ice fragment of an exo-pluto surface. II. Generation of N2 ice fragments and the origin of 'Oumuamua
Creators: name: Desch, Steven J.
name: Jackson, Alan P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The origin of the interstellar object 1I/'Oumuamua, has defied explanation. In a companion paper (Jackson & Desch, 2021), we show that a body of N2 ice with axes 45 m x 44 m x 7.5 m at the time of observation would be consistent with its albedo, non-gravitational acceleration, and lack of observed CO or CO2 or dust. Here we demonstrate that impacts on the surfaces of Pluto-like Kuiper belt objects (KBOs) would have generated and ejected ~10^14 collisional fragments--roughly half of them H2O ice fragments and half of them N2 ice fragments--due to the dynamical instability that depleted the primordial Kuiper belt. We show consistency between these numbers and the frequency with which we would observe interstellar objects like 1I/'Oumuamua, and more comet-like objects like 2I/Borisov, if other stellar systems eject such objects with efficiency like that of the Sun; we infer that differentiated KBOs and dynamical instabilities that eject impact-generated fragments may be near-universal among extrasolar systems. Galactic cosmic rays would erode such fragments over 4.5 Gyr, so that fragments are a small fraction (~0.1%) of long-period Oort comets, but C/2016 R2 may be an example. We estimate 'Oumuamua was ejected about 0.4-0.5 Gyr ago, from a young (~10^8 yr) stellar system, which we speculate was in the Perseus arm. Objects like 'Oumuamua may directly probe the surface compositions of a hitherto-unobserved type of exoplanet: "exo-plutos". 'Oumuamua may be the first sample of an exoplanet brought to us.
description: 29 pages, 1 figure. Companion to Jackson & Desch (2021), "1I/'Oumuamua as an N2 ice fragment of an exo-pluto surface. I. Size and compositional constraints"
title: Zur Maltechnik Hilde Goldschmidts (1897–1980): Untersuchung von 188 Gemälden aus dem Konvolut am Museum Kitzbühel – Sammlung Alfons Walde
Creators: name: Borodkina, Anna
Publisher: name: Academy of Fine Arts Vienna
publisherIdentifier: https://ror.org/029djt864
publisherIdentifierScheme: ROR
Year: 2023

description: Hilde Goldschmidt (1897–1980) war eine expressionistische Grafikerin und Malerin. Ihre lange und produktive Schaffensphase umfasst 62 Jahre aus der Mitte des 20. Jahrhunderts. Ihre Motive sind von ihrer Lebensgeschichte geprägt. Sie porträtiert Freund_Innen, Bekannte, Familienmitglieder und ihre Katzen, sowie Personen, zu denen sie keinen persönlichen Bezug hat. Außerdem malt sie Stillleben und Landschaften auf zahlreichen Studienreisen, während ihrer Exiljahre in England – bedingt durch die Vertreibung aus Österreich durch den Nationalsozialismus aufgrund ihrer jüdischen Herkunft – sowie in ihrer Wahlheimat Kitzbühel.
Insgesamt wurden 188 Gemälde aus ihrem Nachlass untersucht, der sich im Archiv des Museum Kitzbühel – Sammlung Alfons Walde befindet. Dabei wurde das Malmaterial und die Maltechnik analysiert. In der vorliegenden Diplomarbeit werden die Analysen exemplarisch ausführlich beschrieben, statistisch ausgewertet und außerdem im Anhang tabellarisch für jedes einzelne Gemälde aufgeführt. Besondere Aufmerksamkeit wurde der Gruppierung der verschiedenen Malmaterialien und Malschichtphänomene gewidmet, sowie der Charakterisierung und Untersuchung der industriell vorgrundierten textilen Bildträger und der maltechnischen Spezialeffekte. Zur Durchführung der Untersuchungen kamen Fasermikroskopie, mikrochemische Tests und Infrarotspektroskopie (FTIR) zum Einsatz. Zusätzliche Informationen wurden durch Interviews mit Zeitzeug_Innen gewonnen.
description: Hilde Goldschmidt (1897–1980) was an expressionist graphic artist and painter, with a long and productive creative phase spanning 62 years in the mid-20th century. Her subjects were shaped by her life story, portraying friends, acquaintances, family members, and her cats, as well as individuals unrelated to her personal life. She painted still lifes and landscapes during numerous study trips, as well as during her years of exile in England – due to her expulsion from Austria by the National Socialism regime because of her Jewish heritage – and in her chosen home of Kitzbühel.
A total of 188 paintings from her estate, which are housed in the archive of the Museum Kitzbühel – Alfons Walde Collection, were examined for painting materials and techniques. The analyses are described in an exemplary, statistical, and detailed manner, while being listed in tabular form in the appendix for each individual painting. Special attention was given to grouping of the different painting materials and paint layer phenomena, as well as characterizing and examining the industrially primed textile supports and special surface effects in the works. Fiber microscopy, microchemical tests, and FTIR were employed to conduct the investigations, and additional information was obtained through interviews with contemporary witnesses.
Solitons in interacting Dicke models of coupled cavities with two-level systems
Creators: name: Paternostro, M.
name: Agarwal, G. S.
name: Kim, M. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider an array of coupled optical cavities, each containing a multi-atom ensemble. We show that the nonlinearity inherent in the cooperative dynamics of the atoms in each ensemble coupled to the respective cavity field allows for the formation of solitary waves. Such a prediction can be tested in state-of-the-art semiconducting photonic-crystal microcavities with embedded impurities.
description: 4 pages, two figures, RevTeX4
INSTITUCIONALIZAÇÃO DA PRÁTICA DE ELABORAÇÃO DO RELATÓRIO DE GESTÃO: ESTUDO DE CASO DA CONTROLADORIA DA UNIVERSIDADE FEDERAL DE PERNAMBUCO
Creators: name: Paula, Jackeline Martins Da Silva
name: Oliveira, Rezilda Rodrigues
name: Vasconcelos, Gabriela De
name: Pinheiro, Telma Maia
Publisher: name: Revista de Informação Contábil
Year: 2017
Subjects: Controladoria; Teoria Institucional; Relatório de Gestão; Institucionalização de Hábitos e Rotinas.

description: Busca-se identificar como ocorre a institucionalização de hábitos e rotinas da Controladoria da Universidade Federal de Pernambuco (UFPE) no que tange à elaboração de seu Relatório de Gestão. Para tanto, examinou-se a literatura referente aos componentes intrínsecos de um dado processo de institucionalização, principalmente àqueles que dão suporte ao estudo de diferentes atores, práticas, rotinas e peculiaridades típicos desta área de pesquisa contábil. O trabalho de Boff et al. (2008) serviu como referência da abordagem metodológica utilizada, destacando-se as replicações e adaptações consideradas necessárias diante da delimitação, contextualização e especificidades teórico-empíricas deste estudo de caso. Assim, algumas evidências corroboram tal institucionalização ligada ao Relatório de Gestão da UFPE no âmbito da Controladoria, quais sejam: consolidação de hábitos e rotinas por parte de seus integrantes, junto com a consistente eficiência de seu funcionamento, dentre outros aspectos analisados.
description: Revista de Informação Contábil, v. 11, n. 1 (2017)
Stochastic Inflationary Scalar Electrodynamics
Creators: name: Prokopec, T.
name: Tsamis, N. C.
name: Woodard, R. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We stochastically formulate the theory of scalar quantum electrodynamics on a de Sitter background. This reproduces the leading infrared logarithms at each loop order. It also allows one to sum the series of leading infrared logarithms to obtain explicit, nonperturbative results about the late time behavior of the system. One consequence is confirmation of the conjecture by Davis, Dimopoulos, Prokopec and Tornkvist that super-horizon photons acquire mass during inflation. We compute a photon mass-suqared of about 3.2991 H^2. The scalar stays perturbatively light with a mass-squared of about 0.8961 3 e^2 H^2/8pi^2. Interestingly, the induced change in the cosmological constant is negative, of about -0.6551 3 G H^4/pi.
description: 52 pages, 7 figures, uses LaTeX 2epsilon, version 2 corrects eqn (138) and updates the reference list
Photonic Gap Antennas Based on High Index-Contrast Slot-Waveguides
Creators: name: Patri, Ashutosh
name: Cognée, Kévin G.
name: Haeberlé, Louis
name: Menon, Vinod
name: Caloz, Christophe
name: Kéna-Cohen, Stéphane
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optical antennas made of low-loss dielectrics have several advantages over plasmonic antennas, including high radiative quantum efficiency, negligible heating and excellent photostability. However, due to weak spatial confinement, conventional dielectric antennas fail to offer light-matter interaction strengths on par with those of plasmonic antennas. We propose here an all-dielectric antenna configuration that can support strongly confined modes ($V\sim10^{-4}λ_{0}^3$) while maintaining unity antenna quantum efficiency. This configuration consists of a high-index pillar structure with a transverse gap that is filled with a low-index material, where the contrast of indices induces a strong enhancement of the electric field perpendicular to the gap. We provide a detailed explanation of the operation principle of such Photonic Gap Antennas (PGAs) based on the dispersion relation of symmetric and asymmetric horizontal slot-waveguides. To discuss the properties of PGAs, we consider silicon pillars with air or CYTOP as the gap-material. We show by full-wave simulations that PGAs with an emitter embedded in the gap can enhance the spontaneous emission rate by a factor of $\sim$1000 for air gaps and $\sim$400 for CYTOP gaps over a spectral bandwidth of $Δλ\approx300$ nm at $λ=1.25$ \textmu m. Furthermore, the PGAs can be designed to provide unidirectional out-of-plane radiation across a substantial portion of their spectral bandwidth. This is achieved by setting the position of the gap at an optimized off-centered position of the pillar so as to properly break the vertical symmetry of the structure. We also demonstrate that, when acting as receivers, PGAs can lead to a near-field intensity enhancement by a factor of $\sim$3000 for air gaps and $\sim$1200 for CYTOP gaps.
The HELLAS2XMM survey. X. The bolometric output of luminous obscured quasars: The Spitzer perspective
Creators: name: Pozzi, F.
name: Vignali, C.
name: Comastri, A.
name: Pozzetti, L.
name: Mignoli, M.
name: Gruppioni, C.
name: Zamorani, G.
name: Lari, C.
name: Civano, F.
name: Brusa, M.
name: Fiore, F.
name: Maiolino, R.
name: La Franca, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: We aim at estimating the spectral energy distributions (SEDs) and the physical parameters related to the black holes harbored in eight high X-ray-to-optical (F_X/F_R>10) obscured quasars at z>0.9 selected in the 2--10 keV band from the HELLAS2XMM survey. Methods: We use IRAC and MIPS 24 micron observations, along with optical and Ks-band photometry, to obtain the SEDs of the sources. The observed SEDs are modeled using a combination of an elliptical template and torus emission (using the phenomenological templates of Silva et al. 2004) for six sources associated with passive galaxies; for two point-like sources, the empirical SEDs of red quasars are adopted. The bolometric luminosities and the M_BH-L_K relation are used to provide an estimate of the masses and Eddington ratios of the black holes residing in these AGN. Results: All of our sources are detected in the IRAC and MIPS (at 24 micron) bands. The SED modeling described above is in good agreement with the observed near- and mid-infrared data. The derived bolometric luminosities are in the range ~10^45-10^47 erg s^-1, and the median 2--10 keV bolometric correction is ~25, consistent with the widely adopted value derived by Elvis et al. (1994). For the objects with elliptical-like profiles in the K_s band, we derive high stellar masses (0.8-6.2)X10^11 Mo, black hole masses in the range (0.2-2.5)X10^9 Mo, and Eddington ratios L/L_Edd<0.1, suggesting a low-accretion phase.
description: 12 pages, 6 figures, A&A accepted. Typo corrected in the title
O COMPORTAMENTO DOS INDICADORES ECONÔMICO-FINANCEIROS DE UMA EMPRESA BRASILEIRA QUE EMITE ADR’S ANTES E APÓS A ADOÇÃO DA LEI SARBANES-OXLEY
Creators: name: Jales, Jamille Barbosa Silva Da Costa
name: Lucena, Ana Lenita Carlos Paiva
Publisher: name: Revista de Informação Contábil
Year: 2017
Subjects: Lei Sarbanes-Oxley (SOX); American Depositary Receipt (ADR); New York Stock Exchange (NYSE).

description: Comumente abordada em assuntos sobre transparência e ética nas organizações mundiais, a Lei Sarbanes-Oxley é um marco na prevenção de fraudes nas práticas contábeis. Criada no ano de 2002 com o objetivo de proteger e recuperar a confiança dos investidores no mercado de capitais, após sucessivos escândalos de manipulações contábeis nas maiores companhias dos EUA. Nessa perspectiva, o presente estudo objetivou analisar o comportamento dos indicadores econômico-financeiros de uma empresa brasileira que emite ADR’s antes e após a adoção da Lei Sarbanes-Oxley. Para tanto, analisou-se uma empresa listada na Bolsa de Valores de Nova York (NYSE) no período de 1997 a 2016 considerando anos antes e depois da vigência da referida lei. O estudo caracterizou-se por ser uma pesquisa descritiva e quantitativa, cujos procedimentos fundamentaram-se na pesquisa documental e ex-post-facto. Os dados foram coletados do software do Economática® e a técnica estatística utilizada para a análise dos dados foi a análise de variância de fator único, por meio da realização do Teste F e o procedimento Tukey-Kramer. A partir desses testes, observou-se entre os indicadores econômico-financeiros aqueles que apresentaram diferenças significativas nas suas médias, antes e após a aplicação da lei. Diante dos resultados obtidos com a pesquisa, pôde-se concluir que a Lei Sarbanes-Oxley influenciou significativamente o comportamento dos indicadores de estrutura de capital analisados (endividamento geral, composição do endividamento, imobilização do patrimônio líquido e estrutura de capital). Já os demais indicadores estudados, liquidez (liquidez geral, liquidez corrente e liquidez seca) e rentabilidade (retorno sobre o investimento, margem operacional, retorno sobre o patrimônio líquido e alavancagem financeira) apresentaram em seus índices comportamentos discretos, dos quais apenas dois índices de rentabilidade (retorno sobre o investimento e margem operacional) comportaram-se com médias diferentes, resultado proveniente da influência da lei na companhia.
description: Revista de Informação Contábil, v. 11, n. 1 (2017)
Deposition of Atoms on a Quasicrystalline Substrate: Molecular-Dynamics Study in 3 Dimensions
Creators: name: Mungan, Muhittin
name: Weisskopf, Yves
name: Erbudak, Mehmet
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the three-dimensional structure formation when atoms are deposited onto a substrate with a decagonal quasicrystalline order. Molecular-dynamicscalculations show that the adsorbate layer consists of ordered nano-scale domains with orientations determined by the underlying substrate symmetry. Depending on the relative strength of the interactions of adsorbate atoms with each other and with the substrate atoms, different morphologies are observed ranging from layer-by-layer growth to cluster formation. We also find that the film thickness likewise affects the overall structure of the growing film: Depending on the relative strength of the interaction between adsorbate atoms, a structural transition of the configuration of the adsorbate layers closest to the substrate can occur as the number of deposited layers increases.
description: 4 pages, 4 figures
ANÁLISE DO DESEMPENHO ECONÔMICO-FINANCEIRO EM OPERAÇÕES DE FUSÕES E AQUISIÇÕES NO MERCADO BRASILEIRO
Creators: name: Araújo, Júlio Pereira De
name: Silva, Jucyara Gomes Da
name: Carmona, Charles Ulises De Montreuil
Publisher: name: Revista de Informação Contábil
Year: 2017

description: Este artigo teve por objetivo comparar o desempenho econômico-financeiro de empresas brasileiras que passaram pelo processo de fusão ou aquisição em 2013, visando observar se houve melhoria após a realização de tal atividade. A análise se deu por meio de nove índices financeiros dentro dos grupos de liquidez, endividamento, rentabilidade e de sinergia, observando-se os valores em média três anos antes, três anos após e no ano da fusão ou aquisição. Houve o destaque para as empresas do setor de Tecnologia da Informação, haja vista estarem as mesmas na liderança do número de fusões e aquisições (F&A) realizadas no Brasil nos últimos anos. Os resultados mostraram que em apenas quatro dos nove índices observou-se uma melhoria após a fusão ou aquisição na média geral das empresas analisadas. São eles: Liquidez Geral, Quantidade da Dívida, Qualidade da Dívida e Despesas Administrativas e Gerais. Sobre as empresas de TI, as mesmas apresentaram melhoria após a fusão ou aquisição em seis índices (Liquidez Geral, Liquidez Corrente, Quantidade da Dívida, Retorno sobre o Ativo, Retorno sobre o Patrimônio Líquido e Margem Líquida), em relação às empresas dos demais setores, mostrando ser a F&A uma boa estratégia de crescimento para esse ramo.
description: Revista de Informação Contábil, v. 11, n. 1 (2017)
Clinical-immunological characterization and immune tolerance breakdown in paraneoplastic neurological syndromes associated with Hu antibodies
Creators: name: Villagrán García, Macarena
Publisher: name: Zenodo
Year: 2024

description: Supplementary material of the PhD project "Clinical-immunological characterization and immune tolerance breakdown in paraneoplastic neurological syndromes associated with Hu antibodies" by Macarena Villagrán-García. The thesis defence is scheduled for 4th December 2024 in the University Lyon 1, Lyon, France.
LIMITAÇÕES DA EFFECTIVE TAX RATE NA MENSURAÇÃO DO DESEMPENHO DAS COMPANHIAS BRASILEIRAS
Creators: name: Carvalho, Valdemir Galvão De
name: Silva, Carla Caroline Carvalho
name: Amaral, Fernando Roberto Cavalcante Bandeira Do
name: Ferreira, Leonel Carlos Dias
name: Marion, José Carlos
Publisher: name: Revista de Informação Contábil
Year: 2017
Subjects: Planejamento Tributário;Limitações da ETR;Desempenho Financeiro

description: Este estudo analisa as limitações da Effective Tax Rate (ETR) na verificação do desempenho das companhias brasileiras. As demonstrações financeiras trimestrais foram coletadas no I/B/E/S, entre 1999 e 2014, de 651 firmas (excluído as financeiras). A pesquisa é descritiva e empírica com dados em painel não balanceados, o tamanho da amostra varia de acordo com o painel. Os resultados sugerem que as informações tributárias divulgadas são úteis para verificar o desempenho das companhias. A ETR apresentou limitações na mensuração do desempenho das firmas. A Long Cash ETR e a Cash Tax Paid foram estatisticamente significantes para verificar o desempenho contábil mensurado pelo LPA e desempenho econômico mensurado pelo índice preço/lucro. Dentre as proxies, disponíveis para mitigar os problemas da ETR, a que apresentou maior poder de explicação na relação com o desempenho contábil foi Cash Tax Paid e, para a relação com o indicador de mercado, foi Tax Change Component
description: Revista de Informação Contábil, v. 11, n. 1 (2017)
Il Romanzo di Ricerca: l’avvio editoriale di nuova narrativa italiana realistico-surreale nel secondo decennio del terzo millennio
Creators: name: Tonfoni, Graziella
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: L-FIL-LET/13 Filologia della letteratura italiana

description: Valutando una per una, comprendendo, catalogando, le ragioni delle attuali difficoltà gestionali, delle asperità economiche, di questi tempi complicati, osservando le tensioni interne, che si generano nell'ambito di ogni direzione editoriale, accerchiata, inondata da innumerevoli proposte, prevedendo e preventivandone le conseguenze, sulle relative scelte, che ne derivano, l’autrice indica con obiettività, le ragioni per cui molto spesso lei è in disaccordo con le decisioni finali, relative ai criteri di selezione delle opere di narrativa stabile, da pubblicare. Con approccio scientifico, si allontana, per osservare le tendenze e i risvolti, dalla letteratura attuale mainstream, distanziandosi volutamente dalla prosa e dalla critica attualmente in vigore. Effettua scelte precise, in funzione di una leggibilità solida nel tempo, agisce come una sensibile testimone della realtà presente, che prevede la possibilità di un futuro stabile, di intonazione ragionevole, di auto-ironica interpretazione. Presenta la necessità di attivare una letteratura italiana parallela, da lei definita realistico-surreale.
ATIVOS BIOLÓGICOS E PRODUTOS AGRÍCOLAS: UMA ANÁLISE BIBLIOMÉTRICA SOBRE A PRODUÇÃO NACIONAL NO PERÍODO DE 2009 A 2016
Creators: name: Prata, Bruno Chacon
name: Nogueira, Daniel Ramos
Publisher: name: Revista de Informação Contábil
Year: 2017
Subjects: Ativos Biológicos; Bibliometria; CPC 29.

description: O propósito deste trabalho é realizar a análise do perfil e crescimento de artigos publicados sobre o tema ativo biológico no período de 2009 a 2016, usando como base as leis da bibliometria. Foi utilizado uma amostra de 44 artigos entre congressos e periódicos. Os artigos foram encontrados nas bases de dados SPELL e Atena e nos anais dos congressos analisados. Foi feita a análise dos seguintes indicadores: (I) Ano de publicação; (II) Quantidade de autores por artigo; (III) Análise dos autores que mais publicaram; (IV) Análise das Instituições de Ensino Superior; (V) Análise de periódicos e eventos mais produtivos; (VI) Palavras-chave mais utilizadas; (VII) Análise das Referências e análise dos dados comparada ao Padrão Internacional de Lotka. Foram utilizados softwares como auxílio para a análise dos dados, como Microsoft Excel 2016®, Microsoft Word 2016® e Primitive Word Counter®. Os principais resultados foram: no ano 2015 foi observado a maior concentração de artigos publicados; os autores que mais publicaram no período analisado foram Daniel Ramos Nogueira e Ilírio José Rech; o evento que mais deteve artigos foi o Congresso ANPCONT e os periódicos mais produtivo foram Sociedade, Contabilidade e Gestão e Revista Contemporânea de Contabilidade; as palavras mais utilizadas entre as publicações analisadas foram: Ativos Biológicos, Valor justo, Empresas, CPC 29; a Instituição de Ensino Superior que mais concentrou pesquisas publicadas foi a Universidade de São Paulo. Conclui-se nesta pesquisa que os estudos sobre ativos biológicos devem ser aprimorados, indicando desta forma uma necessidade de futuras pesquisas sobre essa área.
description: Revista de Informação Contábil, v. 11, n. 1 (2017)