cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Composite fermion wave functions as conformal field theory correlators
Creators: name: Hansson, Hans
name: Chang, Chia-Chen
name: Jain, Jainendra
name: Viefers, Susanne
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: It is known that a subset of fractional quantum Hall wave functions has been expressed as conformal field theory (CFT) correlators, notably the Laughlin wave function at filling factor $ν=1/m$ ($m$ odd) and its quasiholes, and the Pfaffian wave function at $ν=1/2$ and its quasiholes. We develop a general scheme for constructing composite-fermion (CF) wave functions from conformal field theory. Quasiparticles at $ν=1/m$ are created by inserting anyonic vertex operators, $P_{\frac{1}{m}}(z)$, that replace a subset of the electron operators in the correlator. The one-quasiparticle wave function is identical to the corresponding CF wave function, and the two-quasiparticle wave function has correct fractional charge and statistics and is numerically almost identical to the corresponding CF wave function. We further show how to exactly represent the CF wavefunctions in the Jain series $ν= s/(2sp+1)$ as the CFT correlators of a new type of fermionic vertex operators, $V_{p,n}(z)$, constructed from $n$ free compactified bosons; these operators provide the CFT representation of composite fermions carrying $2p$ flux quanta in the $n^{\rm th}$ CF Landau level. We also construct the corresponding quasiparticle- and quasihole operators and argue that they have the expected fractional charge and statistics. For filling fractions 2/5 and 3/7 we show that the chiral CFTs that describe the bulk wave functions are identical to those given by Wen's general classification of quantum Hall states in terms of $K$-matrices and $l$- and $t$-vectors, and we propose that to be generally true. Our results suggest a general procedure for constructing quasiparticle wave functions for other fractional Hall states, as well as for constructing ground states at filling fractions not contained in the principal Jain series.
description: 26 pages, 3 figures
Strong CP problem and axion dark matter with small instantons
Creators: name: Kitano, Ryuichiro
name: Yin, Wen
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The axion mass receives a large correction from small instantons if the QCD gets strongly coupled at high energies. We discuss the size of the new CP violating phases caused by the fact that the small instantons are sensitive to the UV physics. We also discuss the effects of the mass correction on the axion abundance of the Universe. Taking the small-instanton contributions into account, we propose a natural scenario of axion dark matter where the axion decay constant is as large as $10^{15\text{-}16}$GeV. The scenario works in the high-scale inflation models.
description: 32pages, 8figures
First-order framework and domain-wall/brane-cosmology correspondence
Creators: name: Bazeia, D.
name: Brito, F. A.
name: Costa, F. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We address the possibility of finding domain wall solutions from cosmological solutions in brane cosmology. We find first-order equations for corresponding cosmology/domain wall solutions induced on 3-branes. The quadratic term of energy density in the induced Friedmann equation plays a non-standard role and we discuss the way the standard cosmological and domain wall models are recovered as the brane tension becomes large and show how they can be described by four-dimensional supergravity action in such a limit. Finally, we show that gravity on the 3-brane is locally localized as one moves away from the two-dimensional domain walls living on the brane.
description: Revtex4, 10 pages, 7 figures; version to appear in PLB
EVIDÊNCIAS EMPÍRICAS SOBRE O USO DA CONTABILIDADE DE CUSTOS EM MICRO E PEQUENAS EMPRESAS: UMA ABORDAGEM MULTIVARIADA
Creators: name: Cunha Callado, Aldo Leonardo
name: Callado, Antônio André Cunha
name: Holanda, Fernanda Marques De Almeida
Publisher: name: Revista de Informação Contábil
Year: 2008
Subjects: Gestão de Custos; Processo Decisório; Abordagem multivariada.

description: O objetivo deste trabalho consiste em identificar a estrutura e padrões de relações existentes entre as principais variáveis relativas ao uso da contabilidade de custos nas micro e pequenas organizações industriais localizadas na cidade de João Pessoa através da aplicação da análise de agrupamento e análise fatorial sobre as principais variáveis relacionadas à gestão de custos. A amostra é composta por 22 organizações industriais obtidas aleatoriamente por meio do cadastro da FIEP-PB. Para a identificação da estrutura natural de relações entre as diversas variáveis, esta pesquisa considerou os procedimentos de análise de agrupamentos e análise fatorial. Os cálculos foram efetuados a partir do aplicativo STATISTICA, tanto para a análise de agrupamentos, quanto para a análise fatorial. Os resultados obtidos através da análise de agrupamento e da análise fatorial apresentaram semelhanças significativas sobre a representação analítica da estrutura de interação entre as variáveis estudadas. Pode-se destacar que o perfil do profissional responsável pelo registro e análise dos custos apresentou comportamento distinto das demais, ressaltando uma certa influência sobre a forma de cálculo dos custos. Palavras-chave: Gestão de Custos; Processo Decisório; Abordagem multivariada. Abstract: The objective of this article consists in identify both structure and Standard relations between among the main aspects related to cost accounting in micro and small industrial organizations located in João Pessoa. The sample is composed by twenty-two industrial organizations chosen randomly through FIEP-PB files. To identify the structure of relations between the variables investigated in this research, it was considered a sequence of operational procedures through the use of cluster analysis and factorial analysis. The statistical calculations of cluster and factorial analysis were performed by the use of STATISTICA. The results obtained from both methods presented significant matches over the representation of the structure of relations considering the variables investigated. It may be pointed out that the profile of the person in charge of the registration an analysis of costs information was far from the others, highlighting some influence over costs calculations. Key-words: Costs Management; Decision Process; Multivariate Analysis.
description: Revista de Informação Contábil, v. 2, n. 2 (2008): RIC - Revista de Informação Contábil
CONTRIBUIÇÕES ESTRATÉGICAS DO PLANEJAMENTO NA GESTÃO MUNICIPAL: ESTUDO DE CASO EM UM MUNICÍPIO DE SANTA CATARINA.
Creators: name: Fidelis, Jussara
name: Rezende, Denis Alcides
Publisher: name: Revista de Informação Contábil
Year: 2008
Subjects: Planejamento Municipal; Gestão; Estratégias; Administração Municipal.

description: O planejamento municipal deve envolver a sociedade para propor e posteriormente estabelecer o futuro dos municípios. Além disso, possibilita o consenso entre os gestores municipais e a sociedade realmente comprometida com seu desenvolvimento. A participação dos munícipes deve ser permanente e a sociedade pode analisar todas as práticas municipais e solicitar renovadas ações para seu o desenvolvimento. O objetivo desse estudo é registrar as contribuições do planejamento na gestão municipal em um município catarinense. A metodologia da pesquisa utilizada foi o estudo de caso e os resultados auferidos foram positivos dos quais podem surgir novas estratégias e ações efetivas para o auxílio na gestão municipal. Como conclusão, foi possível registrar que o planejamento municipal direciona os meios para alcançar os objetivos traçados e, além disso, pode estabelecer mecanismos de atuação conjunta entre munícipes e gestores municipais para facilitar a transparência nas informações, no planejamento e na gestão municipal. Palavras-chave: Planejamento Municipal; Gestão; Estratégias; Administração Municipal.
description: Revista de Informação Contábil, v. 2, n. 2 (2008): RIC - Revista de Informação Contábil
Plano de Ação para Implementação das Melhores Práticas de Enfermagem no Manejo da Dor
Creators: name: Fontes, Bárbara
name: de Moraes, Érica Brandão
Publisher: name: Zenodo
Year: 2024
Subjects: management tool
implementation science
nurse care
pain management

description: Plano de ação criado para implementar um plano de melhorias das melhores práticas de enfermagem no manejo da dor do paciente cirúrgico ortopédico, contendo as estratégias  a serem implementadas. Para elaborar o plano de ação foi utilizada a ferramenta de gestão 5W2H e foi definido definindo qual atividade precisa ser feita, como, quando, por quê, por quem, onde e a qual custo e com matriz de priorização chamada GUT  (Gravidade x Urgência x Tendência)foi aplicada, com a finalidade de priorização dos itens do plano de ação.
Quasinormal modes and shadows of a new family of Ayón-Beato-Garc\'ıa black holes
Creators: name: Cai, Xin-Chang
name: Miao, Yan-Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain a type of Ayón-Beato-Garc\'ıa (ABG) related black hole solutions with five parameters: the mass $m$, the charge $q$, and three dimensionless parameters $α$, $β$ and $γ$ associated with nonlinear electrodynamics. We find that this type of black holes is regular under the conditions: $αγ\geqslant 6$, $βγ\geqslant 8$, and $γ>0$. Here we focus on the saturated case: $α={6}/γ$ and $β={8}/{γ}$, such that only three parameters $m$, $q$ and $γ$ remain, which leads to a new family of ABG black holes. For such a family of black holes, we investigate the influence of the charge $q$ and the parameter $γ$ on the horizon radius and the Hawking temperature. In addition, we calculate the quasinormal mode frequencies of massless scalar field perturbations by using the sixth-order WKB approximation method and the unstable circular null geodesic method in the eikonal limit. We also compute the shadow radius for the new family of ABG black holes and use the shadow data of the $M87^{*}$ black hole detected by the Event Horizon Telescope to provide an upper limit on the charge $q$ of the new black holes. Using the shadow data of the $M87^{*}$ black hole, we find that the upper limit of the charge $q$ increases rapidly at first and then slowly but does not exceed the mass of the $M87^{*}$ black hole at last when the parameter $γ$ is increasing and going to infinity, and that the data restrict the frequency range of the fundamental mode with $l=1$ to $1.4\times 10^{-6}Hz\sim 1.9\times 10^{-6} Hz$.
description: v1: 20 pages, 9 figures; v2: 24 pages, 11 figures, 2 tables, final version to appear in Physical Review D
ASSOCIAÇÃO ENTRE BETA CONTÁBIL E BETA DE MERCADO: ANÁLISE NO MERCADO FINANCEIRO BRASILEIRO
Creators: name: Teixeira, Sarah Chinarelli
name: Valle, Mauricio Ribeiro Do
Publisher: name: Revista de Informação Contábil
Year: 2009
Subjects: risco; beta de mercado; beta contábil; correlação; associação.

description: O propósito desse estudo foi verificar a existência de associação (correlação Spearman e Pearson) entre betas calculados a partir de dados de mercado (cotações e dividendos) e betas baseados em dados contábeis. Os resultados indicaram que há correlação significativa entre os betas, dependendo da especificação das variáveis contábeis. Adicionalmente, os resultados revelaram que o beta contábil obtido do lucro líquido apresentou a associação mais expressiva com o beta de mercado, o que é positivo por ser uma das informações mais amplamente divulgadas pelas empresas; a variável menos correlacionada foi o lucro por ação. No que concerne o ajuste da alavancagem e obtenção do beta de mercado "desalavancado”, introduzido nesse trabalho, houve correlação positiva entre o beta de mercado “desalavancado” e o beta contábil calculado a partir do lucro operacional. Outro fator importante foram os resultados das correlações obtidas de variáveis em suas diferenças nominais (primeiras diferenças) que apresentaram, em geral, coeficientes maiores, corroborando resultados de trabalhos anteriores, como o de Ball e Brown (1969).
description: Revista de Informação Contábil, v. 2, n. 3 (2008): RIC/UFPE - Revista de Informação Contábil
ENSINO DA DISCIPLINA CONTABILIDADE INTERNACIONAL: UM ESTUDO COMPARATIVO NAS IES CAPIXABAS E POTIGUARES
Creators: name: Oliveira, Ridalvo Medeiros Alves De
name: Gomes, Carlos Jean
name: Carvalho, Daniele Da Rocha
Publisher: name: Revista de Informação Contábil
Year: 2009
Subjects: Contabilidade internacional; Ensino de contabilidade; Harmonização

description: A nova realidade do sistema econômico global e das relações internacionais no mundo dos negócios é um assunto que tem despertado, pela sua relevância, discussões nos mais diversos níveis acadêmicos. Dependentes da vivacidade dos mercados, as nações têm nas organizações empresariais a força que move suas economias e faz circular riquezas capazes de alimentar o sistema, capitalista por natureza. Dessa maneira, a “quebra das fronteiras” trouxe uma realidade jamais vista. Recursos são alocados, resultando em investimentos em países que apresentam melhores oportunidades de ganho, com perspectivas mais promissoras de sucesso. Nesse sentido uma correta análise da saúde financeira, operacional das entidades pode ser o elo entre o sucesso e o fracasso da opção de investimento. Para tanto, faz-se necessário que a linguagem utilizada para interpretar essas distintas situações seja compreensível por quem investe, independentemente do destino dos recursos. Especialistas têm considerado a Contabilidade como sendo a mais adequada linguagem na interpretação dos negócios. Entretanto, a forte regionalização das práticas contábeis, resultado, principalmente, das intervenções governamentais e das diferenças culturais, tem obstaculizado essa leitura harmônica de relatórios e índices financeiros. Na busca por essa tão desejada harmonização contábil ao nível internacional, um primeiro passo pode ser a uniformização conceitual ao nível acadêmico. Sendo assim, o presente trabalho tem como principal objetivo obter informações sobre a realidade do ensino da Contabilidade Internacional, contextualizando-a em nível de graduação, evidenciando sua atual estrutura e a possível colaboração para a harmonização internacional. Para tanto, a pesquisa buscou a opinião e as declarações de professores, coordenadores e chefe de departamentos das instituições de ensino superior potiguares e capixabas, procurando identificar, através da análise dos dados coletados, o nível de percepção do corpo docente e a provável colaboração para a citada convergência internacional.
description: Revista de Informação Contábil, v. 2, n. 3 (2008): RIC/UFPE - Revista de Informação Contábil
Aurora: A Generalised Retrieval Framework for Exoplanetary Transmission Spectra
Creators: name: Welbanks, Luis
name: Madhusudhan, Nikku
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Atmospheric retrievals of exoplanetary transmission spectra provide important constraints on various properties such as chemical abundances, cloud/haze properties, and characteristic temperatures, at the day-night atmospheric terminator. To date, most spectra have been observed for giant exoplanets due to which retrievals typically assume H-rich atmospheres. However, recent observations of mini-Neptunes/super-Earths, and the promise of upcoming facilities including JWST, call for a new generation of retrievals that can address a wide range of atmospheric compositions and related complexities. Here we report Aurora, a next-generation atmospheric retrieval framework that builds upon state-of-the-art architectures and incorporates the following key advancements: a) a generalised compositional retrieval allowing for H-rich and H-poor atmospheres, b) a generalised prescription for inhomogeneous clouds/hazes, c) multiple Bayesian inference algorithms for high-dimensional retrievals, d) modular considerations for refraction, forward scattering, and Mie-scattering, and e) noise modeling functionalities. We demonstrate Aurora on current and/or synthetic observations of hot Jupiter HD209458b, mini-Neptune K218b, and rocky exoplanet TRAPPIST1d. Using current HD209458b spectra, we demonstrate the robustness of our framework and cloud/haze prescription against assumptions of H-rich/H-poor atmospheres, improving on previous treatments. Using real and synthetic spectra of K218b, we demonstrate the agnostic approach to confidently constrain its bulk atmospheric composition and obtain precise abundance estimates. For TRAPPIST1d, 10 JWST NIRSpec transits can enable identification of the main atmospheric component for cloud-free CO$_2$-rich and N$_2$-rich atmospheres, and abundance constraints on trace gases including initial indications of O$_3$ if present at enhanced levels ($\sim$10-100x Earth levels).
description: Accepted for publication in ApJ
Midgap states and charge inhomogeneities in corrugated graphene
Creators: name: Guinea, F.
name: Katsnelson, M. I.
name: Vozmediano, M. A. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the changes induced by the effective gauge field due to ripples on the low energy electronic structure of graphene. We show that zero energy Landau levels will form, associated to the smooth deformation of the graphene layer, when the height corrugation, $h$, and the length of the ripple, $l$, are such that $h^2 / (l a) \gtrsim 1$, where $a$ is the lattice constant. The existence of localized levels gives rise to a large compressibility at zero energy, and to the enhancement of instabilities arising from electron-electron interactions including electronic phase separation. The combined effect of the ripples and an external magnetic field breaks the valley symmetry of graphene leading to the possibility of valley selection.
On the potential of transit surveys in star clusters: Impact of correlated noise and radial velocity follow-up
Creators: name: Aigrain, Suzanne
name: Pont, Frederic
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an extension of the formalism recently proposed by Pepper & Gaudi to evaluate the yield of transit surveys in homogeneous stellar systems, incorporating the impact of correlated noise on transit time-scales on the detectability of transits, and simultaneously incorporating the magnitude limits imposed by the need for radial velocity follow-up of transit candidates. New expressions are derived for the different contributions to the noise budget on transit time-scales and the least-squares detection statistic for box-shaped transits, and their behaviour as a function of stellar mass is re-examined. Correlated noise that is constant with apparent stellar magnitude implies a steep decrease in detection probability at the high mass end which, when considered jointly with the radial velocity requirements, can severely limit the potential of otherwise promising surveys in star clusters. However, we find that small-aperture, wide field surveys may detect hot Neptunes whose radial velocity signal can be measured with present-day instrumentation in very nearby (<100 pc) clusters.
description: 14 pages, 2 figures, accepted for publication in MNRAS
Multiprocessor-compatible inverse kinematics and path planning for robots
Creators: name: Poon, Joseph Kin-Shing
Publisher: name: University of British Columbia
Year: 2010

description: Novel algorithms in robot inverse kinematics and path planning are proposed. Emphasis is placed on real-time execution speed with multiprocessors and adaptability to unpredictable environments. The inverse kinematics algorithm is an iterative solution which is applicable to many classes of industrial robots, and is stable at and around singularities. The method is based on a simple functional analysis of each link of a manipulator and projecting vectors on the coordinate frame of each joint. Heuristic rules are used to control a mobile manipulator base and to guide the manipulator in the case of non-convergence caused by joint limits. The path planning algorithm uses a potential surface in a quantized configuration space. Paths are guaranteed to be collision-free for all parts of the robot. Local minimum regions on the potential surface are filled on demand by extending the obstacles. Arbitrarily shaped obstacles in 3-dimensions can be handled. Using a hierarchical collision detection technique, high execution speed can be maintained even with many complex shaped obstacles in the workspace. The path planning method can theoretically be applied to any manipulator with any degrees of freedom. The implementation of the inverse kinematics and path planning algorithms in a parallel hierarchical multiprocessor computer structure designed for the control of robots is proposed and investigated. Communication among the processors is by point-to-point message passing via asynchronous serial links with message buffers. Computer simulations are used to demonstrate the appropriateness and feasibility of this computer structure for robot control.
MPEC 2024-T41 : 2023 TF1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Ethnoeconomics and Native Amazonian Livelihood: culture and economy among the Nɨpóde-Uitoto of the Middle Caquetá Basin in Colombia
Creators: name: Griffiths, Thomas F. W.
Publisher: name: University of Oxford
Year: 1998

description: This thesis explores the cultural logic shaping native livelihoods in one part of Northwest Amazonia using an ethnographic study of the Nɨpóde-Uitoto people who live in the land corridor along the middle

reaches of the Caquetá river in lowland Colombia. The study applies a culturalist perspective which seeks to understand the Native Amazonian economy from their own point of view. Ethnographic material on Uitoto subsistence, ritual and commercial activities are presented to demonstrate that Uitoto mental representations of the cosmos direct their material processes of livelihood.

The thesis shows that swidden cultivation forms the core of the indigenous economy, and that the Nɨpóde-Uitoto embrace their gardening livelihood as a moral and religious way of life. By examining

a series of formal oral texts about horticulture and garden crops, the discussion reveals that the Uitoto hold a dualistic cosmology in which life is seen as an ceaseless struggle in which garden work seeks to maintain cordial relations with parental divinities and related garden plant spirits who sustain and protect humanity from negative forces in the cosmos. In the same way, regular labour effort in narcotics processing, and the production of garden surpluses for ceremonial exchange, are geared towards strengthening the support of divinities and ancestors who guarantee continued social reproduction.

Uitoto models of livelihood feature a pervasive reciprocal logic of mutual nurture, care and helping between humans, and between humans and spiritual beings. Alongside the key cultural logic of reciprocity, Uitoto theories of work and well-being focus on cyclical bodily processes. The primacy of a bodily idiom reveals cultural models of a “corporeal economy” and a “healing economy”, which may find correlates in Amerindian models of livelihood and social reproduction throughout the ethnographic region. Examination of native perspectives on commerce shows that the Uitoto construct a dualistic model of their mixed livelihood which they use to organise their work strategies in the short and long-term. As well as a secure source of food, native people value subsistence gardening as a specific practice which expresses their Amerindian personhood: for the Uitoto, livelihood practice is an essential part of ethnic identity.
Relativistic treatment in D-dimensions to a spin-zero particle with noncentral equal scalar and vector ring-shaped Kratzer potential
Creators: name: Ikhdair, Sameer M.
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Klein-Gordon equation in D-dimensions for a recently proposed Kratzer potential plus ring-shaped potential is solved analytically by means of the conventional Nikiforov-Uvarov method. The exact energy bound-states and the corresponding wave functions of the Klein-Gordon are obtained in the presence of the noncentral equal scalar and vector potentials. The results obtained in this work are more general and can be reduced to the standard forms in three-dimensions given by other works.
description: 20 pages
title: Gradient‐based eigenvalue optimization for electromagnetic cavities with built‐in mode matching
Creators: name: Ziegler, Anna
name: Hahn, Robert
name: Isensee, Victoria
name: Nguyen, Anh Duc
name: Schöps, Sebastian
Publisher: name: John Wiley & Sons
Year: 2025

description: Shape optimization with respect to eigenvalues of a cavity plays an important role in the design of new resonators or in the optimization of existing ones. This paper proposes a gradient‐based optimization scheme, which is enhanced with closed‐form shape derivatives of the system matrices. Based on these, accurate derivatives of eigenvalues, eigenmodes, and the cost function can be computed with respect to the geometry, which significantly reduces the computational effort of the optimizer. The work is demonstrated by applying it to the 9‐cell TESLA cavity, for which the design parameters of the computational model are considered as optimization variables to match the design criteria for devices in realistic use cases. Since eigenvalues may cross during the shape optimization of a cavity, a new algorithm based on an eigenvalue matching procedure is proposed, to ensure the optimization of the desired mode in order to also enable successful matching along large shape variations.
A ERRATICIDADE DAS CONTAS CIRCULANTES FINANCEIRAS: UMA RESPOSTA A QUESTÕES SOBRE O MODELO FLEURIET
Creators: name: Starke Junior, Paulo Cesar
name: Freitag, Viviane Da Costa
name: Cherobim, Ana Paula Mussi Szabo
Publisher: name: Revista de Informação Contábil
Year: 2009
Subjects: finanças; capital de giro; contas erráticas; análise dinâmica; modelo fleuriet

description: Nas últimas décadas houve grande desenvolvimento da teoria financeira e, especialmente no Brasil, é destaque o Modelo de Michel Fleuriet que, a partir das contas contábeis de curto prazo – denominadas circulantes, desenvolve e promove a análise dinâmica do capital de giro das empresas. Recentemente, trabalhos foram publicados questionando a validade de uma das afirmações do modelo: a erraticidade dos grupos do capital circulante chamados financeiros. O objetivo deste artigo é testar a hipótese de que as contas contábeis circulantes financeiras são erráticas em relação às operações das empresas brasileiras, especificamente as de médio e grande porte. A partir de uma amostra de 276 empresas listadas na BOVESPA, dentre as quais 151 indústrias, e demonstrações contábeis referentes ao período de 1994 a 2004, este trabalho conclui que o Ativo Circulante Financeiro e o Passivo Circulante Financeiro são erráticos em relação às atividades da empresa, que o Passivo Circulante Operacional apresenta linearidade com a Receita Líquida Operacional e que o Ativo Circulante Operacional é fortemente correlacionado com esta mesma proxy das atividades empresariais.
description: Revista de Informação Contábil, v. 2, n. 3 (2008): RIC/UFPE - Revista de Informação Contábil
Geometric Approach to Analytic Marginalisation of the Likelihood Ratio for Continuous Gravitational Wave Searches
Creators: name: Wette, Karl
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The likelihood ratio for a continuous gravitational wave signal is viewed geometrically as a function of the orientation of two vectors; one representing the optimal signal-to-noise ratio, the other representing the maximised likelihood ratio or $\mathcal{F}$-statistic. Analytic marginalisation over the angle between the vectors yields a marginalised likelihood ratio which is a function of the $\mathcal{F}$-statistic. Further analytic marginalisation over the optimal signal-to-noise ratio is explored using different choices of prior. Monte-Carlo simulations show that the marginalised likelihood ratios have identical detection power to the $\mathcal{F}$-statistic. This approach demonstrates a route to viewing the $\mathcal{F}$-statistic in a Bayesian context, while retaining the advantages of its efficient computation.
description: 15 pages, 7 figures; accepted for publication in Universe special issue "Continuous Gravitational Waves"
When the Peas Jump around the Pod: How Stellar Clustering Affects the Observed Correlations between Planet Properties in Multi-Planet Systems
Creators: name: Chevance, Mélanie
name: Kruijssen, J. M. Diederik
name: Longmore, Steven N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent studies have shown that the radii and masses of adjacent planets within a planetary system are correlated. It is unknown how this 'peas-in-a-pod' phenomenon originates, whether it is in place at birth or requires evolution, and whether it (initially) applies only to neighboring planets or to all planets within a system. Here we address these questions by making use of the recent discovery that planetary system architectures strongly depend on ambient stellar clustering. Based on Gaia's second data release, we divide the sample of planetary systems hosting multiple planets into those residing in stellar position-velocity phase space overdensities and the field, representing samples with elevated and low degrees of external perturbation, respectively. We demonstrate that the peas-in-a-pod phenomenon manifests itself in both samples, suggesting that the uniformity of planetary properties within a system is not restricted to direct neighbors and likely already exists at birth. The radius uniformity is significantly elevated in overdensities, suggesting that it can be enhanced by evolutionary effects that either have a similar impact on the entire planetary system or favour the retention of similar planets. The mass uniformity may exhibit a similar, but weaker dependence. Finally, we find ordering in both samples, with the planet radius and mass increasing outwards. Despite its prevalence, the ordering is somewhat weaker in overdensities, suggesting that it may be disrupted by external perturbations arising from stellar clustering. We conclude that a comprehensive understanding of the 'peas-in-a-pod' phenomenon requires linking planet formation and evolution to the large-scale stellar and galactic environment.
description: 11 pages, 3 figures, 1 table; Accepted to ApJ Letters
Blending in Gravitational Microlensing Experiments: Source Confusion And Related Systematics
Creators: name: Smith, Martin C.
name: Wozniak, Przemyslaw
name: Mao, Shude
name: Sumi, Takahiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gravitational microlensing surveys target very dense stellar fields in the local group. As a consequence the microlensed source stars are often blended with nearby unresolved stars. The presence of `blending' is a cause of major uncertainty when determining the lensing properties of events towards the Galactic centre. After demonstrating empirical cases of blending we utilize Monte Carlo simulations to probe the effects of blending. We generate artificial microlensing events using an HST luminosity function convolved to typical ground-based seeing, adopting a range of values for the stellar density and seeing. We find that a significant fraction of bright events are blended, contrary to the oft-quoted assumption that bright events should be free from blending. We probe the effect that this erroneous assumption has on both the observed event timescale distribution and the optical depth, using realistic detection criteria relevent to the different surveys. Importantly, under this assumption the latter quantity appears to be reasonably unaffected across our adopted values for seeing and density. The timescale distribution is however biased towards smaller values, even for the least dense fields. The dominant source of blending is from lensing of faint source stars, rather than lensing of bright source stars blended with nearby fainter stars. We also explore other issues, such as the centroid motion of blended events and the phenomena of `negative' blending. Furthermore, we breifly note that blending can affect the determination of the centre of the red clump giant region from an observed luminosity function. This has implications for a variety of studies, e.g. mapping extinction towards the bulge and attempts to constrain the parameters of the Galactic bar through red clump giant number counts. (Abridged)
description: 18 pages, 10 figures. MNRAS (in press)
Additional file 1 of Kinetic changes in virology, specific antibody response and imaging during the clinical course of COVID-19: a descriptive study
Creators: name: Wang, Qiu-jing
name: Yao, Yan-zhen
name: Song, Jun-shuai
name: Wang, Qiao
name: Xu, Li-yun
name: Bao, Zhou-jun
name: Mao, Dai-wen
name: Zhou, Ji-hang
name: Zhang, Zhe-en
name: Wang, Yan
name: Li, Yi-wei
name: Wang, He-ping
name: Li, Lue
name: Pan, Hai-yan
name: Zhang, Guo-qiang
name: Li, Shi-bo
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology
subject: Computational Biology

description: Additional file 1: Supplementary Figure 1. The study design and data collection flow chart.
RESTRIÇÕES DE FINANCIAMENTO E POLÍTICA DE GESTÃO DE CAIXA NAS EMPRESAS DA BOVESPA
Creators: name: Iquiapaza, Robert Aldo
name: Amaral, Hudson Fernandes
Publisher: name: Revista de Informação Contábil
Year: 2009
Subjects: subject: Política financeira; Restrição financeira; Gestão de caixa; Fluxo de caixa; Empresas de capital aberto.
subject: 336

description: As restrições financeiras afetam o comportamento das empresas, especialmente na administração financeira do caixa para não deixar passar bons investimentos. O objetivo da pesquisa foi identificar qual a proporção e as características das empresas que têm uma política ativa de gestão do caixa. Para tanto, utilizou-se a técnica de regressão de dados em painel com informações financeiras relacionadas ao fluxo de caixa de 159 empresas no período 1996 a 2005. Somente 28 (17.6%) empresas da amostra de estudo apresentaram um comportamento consistente com o modelo de restrição financeira e gestão ativa de fluxo de caixa. Estas empresas têm um coeficiente de sensibilidade da retenção de caixa ao fluxo de caixa positivo e estatisticamente significativo. Estas empresas com restrição financeira em média geram um fluxo de caixa menor como percentual do ativo, realizam menores investimentos, têm piores indicadores de liquidez e de endividamento e têm um menor porte.
description: Revista de Informação Contábil, v. 2, n. 3 (2008): RIC/UFPE - Revista de Informação Contábil
The Ostrogradsky instability can be overcome by quantum physics
Creators: name: Donoghue, John F
name: Menezes, Gabriel
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In theories with higher time derivatives, the Hamiltonian analysis of Ostrogradsky predicts an instability. However, this Hamiltonian treatment does not correspond the way that these theories are treated in quantum field theory, and the instability may be avoided in at least some cases. We present a very simple model which illustrates these features.
description: 11 pages, 2 figures Some references and comments added
CONTRIBUIÇÕES DOS SISTEMAS DE INFORMAÇÕES INTEGRADOS PARA A CONTABILIDADE
Creators: name: Toigo, Leandro Augusto
name: Nascimento, Auster Moreira
Publisher: name: Revista de Informação Contábil
Year: 2009
Subjects: subject: Contabilidade; Funções da contabilidade; sistemas de informações integrados; sistemas de informações parcialmente integrados
subject: 6 Ciências Aplicadas

description: O presente estudo teve por objetivo evidenciar quais são as funções da contabilidade mais afetadas, com a maior de integração dos sistemas de informações. Para isso, foi realizada uma pesquisa de campo junto às empresas industriais de médio e grande porte do estado do Rio Grande do Sul. A amostra foi constituída por 85 empresas, sendo 41 com sistemas de informações totalmente integrados e 44 com sistemas de informações parcialmente integrados. O método utilizado foi uma Survey. Os dados foram coletados por meio de questionário respondido pelos seus contadores. Foram abordados aspectos referentes aos estágios de integração dos sistemas, como confiabilidade e tempestividade na geração da informação pela contabilidade, geração de relatórios e fluxo de informações, caracterizando as funções da contabilidade mais afetadas em cada estágio de integração das informações. Concluiu-se que os sistemas de informações totalmente integrados oferecem maiores benefícios do que os sistemas parcialmente integrados, ou seja, nesses casos a contabilidade executa funções de maior relevância para a gestão da empresa, oferecendo maior apoio informacional e de análise para a tomada de decisão.
description: Revista de Informação Contábil, v. 2, n. 3 (2008): RIC/UFPE - Revista de Informação Contábil
Strukturwandel im Vergleich. Konferenzbericht der Tagung: "Strukturwandel im regionalgesellschaftlichen Vergleich" an der Universität Charles-de-Gaulle/Lille III., November 2003
Creators: name: Eck, Jean-François
name: Friedemann, Peter
name: Goch, Stefan
name: Lauschke, Karl
name: Piquet, Nathalie
Publisher: name: Moving the Social
Year: 2015

description: This is the contribution "Strukturwandel im Vergleich. Konferenzbericht der Tagung: "Strukturwandel im regionalgesellschaftlichen Vergleich" an der Universität Charles-de-Gaulle/Lille III., November 2003" of MTS 31 (2004).
description: Moving the Social, Vol 31 (2004): Forschungen und Forschungsberichte
Interferometric-Spectroscopy With Quantum-Light; Revealing Out-of-Time-Ordering Correlators
Creators: name: Asban, Shahaf
name: Dorfman, Konstantin E.
name: Mukamel, Shaul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We survey the inclusion of interferometric elements in nonlinear spectroscopy performed with quantum light. Controlled interference of electromagnetic fields coupled to matter can induce constructive or destructive contributions of microscopic coupling sequences (histories) of matter. Since quantum fields do not commute, quantum light signals are sensitive to the order of light-matter coupling sequence. Matter correlation functions are thus imprinted by different field factors, which depend on that order. We identify the associated quantum information obtained by controlling the weights of different contributing pathways, and offer several experimental schemes for recovering it. Nonlinear quantum response functions include out-of-time-ordering matter correlators (OTOC) which reveal how perturbations spread throughout a quantum system (information scrambling). Their effect becomes most notable when using ultrafast pulse sequences with respect to the path difference induced by the interferometer. OTOC appear in quantum-informatics studies in other fields, including black holes, high energy, and condensed matter physics.
description: Supplementary material included
Arbeiterbewegung in der Schweiz
Creators: name: Brändle, Fabian
Publisher: name: Moving the Social
Year: 2014

description: Louis Specker: "Links aufmarschieren". Aus der Frühgeschichte der Ostschweizer Arbeiterbewegung, Zürich 2010.
description: Moving the Social, Vol 44 (2010): Forschungen und Forschungsberichte
Presence of dust with a UV bump in massive, star-forming galaxies at 1 < z < 2.5
Creators: name: Noll, S.
name: Pierini, D.
name: Pannella, M.
name: Savaglio, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Fundamental properties of the extinction curve, like the slope in the rest-frame ultraviolet (UV) and the presence/absence of a broad absorption excess centred at 2175 A (the UV bump), are investigated for a sample of 108 massive, star-forming galaxies at 1 < z < 2.5, selected from the FDF Spectroscopic Survey, the K20 survey, and the GDDS. These characteristics are constrained from a parametric description of the UV spectral energy distribution (SED) of a galaxy, as enforced by combined stellar population and radiative transfer models for different geometries, dust/stars configurations and dust properties. In at least one third of the sample, there is a robust evidence for extinction curves with at least a moderate UV bump. The presence of the carriers of the UV bump is more evident in galaxies with UV SEDs suffering from heavy reddening. We interpret these results as follows. The sample objects possess different mixtures of dust grains and molecules producing extinction curves in between the average ones of the Small and Large Magellanic Cloud, where the UV bump is absent or modest, respectively. Most of the dust embeds the UV-emitting stellar populations or is distributed out of the galaxy mid-plane. Alternatively, even dust with a pronounced UV bump, as for the average Milky-Way extinction curve, can be present and distributed in the galaxy mid-plane. In this case, variations of the continuum scattering albedo with wavelength or an age-dependent extinction are not sufficient to explain the previous trend with reddening. Hence, additional extraplanar dust has to be invoked. The data suggest that the carriers of the UV bump are associated with intermediate-age stellar populations, while they survive in the harshest UV-radiation fields owing to dust self-shielding. [abridged]
description: 19 pages, 15 figures, accepted for publication in A&A
Neutron-Capture Elements in the Double-Enhanced Star HE 1305-0007: a New s- and r-Process Paradigm
Creators: name: Cui, Wen-Yuan
name: Cui, D. N.
name: Du, Y. S.
name: Zhang, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The star HE 1305-0007 is a metal-poor double-enhanced star with metallicity [Fe/H] $=-2.0$, which is just at the upper limit of the metallicity for the observed double-enhanced stars. Using a parametric model, we find that almost all s-elements were made in a single neutron exposure. This star should be a member of a post-common-envelope binary. After the s-process material has experienced only one neutron exposure in the nucleosynthesis region and is dredged-up to its envelope, the AGB evolution is terminated by the onset of common-envelope evolution. Based on the high radial-velocity of HE 1305-0007, we speculate that the star could be a runaway star from a binary system, in which the AIC event has occurred and produced the r-process elements.
description: 4 pages, 3 figures, paper accepted for publication in Chinese Physics letters
Future tests of parton distributions
Creators: name: Cruz-Martinez, Juan
name: Forte, Stefano
name: Nocera, Emanuele R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss a test of the generalization power of the methodology used in the determination of parton distribution functions (PDFs). The "future test" checks whether the uncertainty on PDFs, in regions in which they are not constrained by current data, are compatible with future data. The test is performed by using the current optimized methodology for PDF determination, but with a limited dataset, as available in the past, and by checking whether results are compatible within uncertainty with the result found using a current more extensive dataset. We use the future test to assess the generalization power of the NNPDF4.0 unpolarized PDF and the NNPDFpol1.1 polarized PDF methodology. Specifically, we investigate whether the former would predict the rise of the unpolarized proton structure function $F_2$ at small $x$ using only pre HERA data, and whether the latter would predict the so-called "proton spin crisis" using only pre-EMC data.
description: 29 pages, 7 figures. Prepared for the 60th anniversary of the Cracow School of Theoretical Physics, to be published in the proceedings
Die Arbeitersportbewegung in der Schweiz 1874–1947
Creators: name: Brändle, Fabian
Publisher: name: Moving the Social
Year: 2014

description: Dominique Marcel Fankhauser: Die Arbeitersportbewegung in der Schweiz 1874-1947. Beiträge und Kontroversen zur Sozialen Frage im Sport, Wien 2010.
description: Moving the Social, Vol 44 (2010): Forschungen und Forschungsberichte
Symmetrised Characterisation of Noisy Quantum Processes
Creators: name: Emerson, Joseph
name: Silva, Marcus
name: Moussa, Osama
name: Ryan, Colm
name: Laforest, Martin
name: Baugh, Jonathan
name: Cory, David G.
name: Laflamme, Raymond
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A major goal of developing high-precision control of many-body quantum systems is to realise their potential as quantum computers. Probably the most significant obstacle in this direction is the problem of "decoherence": the extreme fragility of quantum systems to environmental noise and other control limitations. The theory of fault-tolerant quantum error correction has shown that quantum computation is possible even in the presence of decoherence provided that the noise affecting the quantum system satisfies certain well-defined theoretical conditions. However, existing methods for noise characterisation have become intractable already for the systems that are controlled in today's labs. In this paper we introduce a technique based on symmetrisation that enables direct experimental characterisation of key properties of the decoherence affecting a multi-body quantum system. Our method reduces the number of experiments required by existing methods from exponential to polynomial in the number of subsystems. We demonstrate the application of this technique to the optimisation of control over nuclear spins in the solid state.
description: About 12 pages, 5 figures