cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Can heavy neutrinos dominate neutrinoless double beta decay?
Creators: name: Lopez-Pavon, J.
name: Pascoli, S.
name: Wong, Chan-fai
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study whether a dominant contribution to neutrinoless double beta decay coming from extra heavy degrees of freedom, introduced to generate the light neutrino masses, can dominate over the light neutrino contribution. It has been shown that this may occur at tree-level if the light neutrino contribution partially cancels out. Here we focus on this case, specifically in the context of type-I seesaw models paying special attention to the one-loop corrections to light neutrino masses, their contribution to the process and correlation with the heavy sector. We perform a general analysis without restricting the study to any particular region of the parameter space, although interesting limits associated with inverse and extended seesawlike models are discussed in more detail. It turns out that the heavy neutrinos can dominate the process only in those limits. For the inverse seesaw limit, we find a very constrained allowed region of the parameter space, with heavy neutrino masses around 5 GeV. The extended seesaw case allows for a larger region, but in general, a hierarchical spectrum of heavy neutrinos with masses above and below $\sim100$ MeV is required.
description: 28 pages, 4 figures, accepted for publication in Phys. Rev. D
Squeezed coherent states for noncommutative spaces with minimal length uncertainty relations
Creators: name: Dey, Sanjib
name: Fring, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide an explicit construction for Gazeau-Klauder coherent states related to non-Hermitian Hamiltonians with discrete bounded below and nondegenerate eigenspectrum. The underlying spacetime structure is taken to be of a noncommutative type with associated uncertainty relations implying minimal lengths. The uncertainty relations for the constructed states are shown to be saturated in a Hermitian as well as a non-Hermitian setting for a perturbed harmonic oscillator. The computed value of the Mandel parameter dictates that the coherent wavepackets are assembled according to sub-Poissonian statistics. Fractional revival times, indicating the superposition of classical-like sub-wave packets are clearly identified.
description: 14 pages, 2 figures
Stringent and Robust Constraints on the Dark Matter Annihilation Cross Section From the Region of the Galactic Center
Creators: name: Hooper, Dan
name: Kelso, Chris
name: Queiroz, Farinaldo S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For any realistic halo profile, the Galactic Center is predicted to be the brightest source of gamma-rays from dark matter annihilations. Due in large part to uncertainties associated with the dark matter distribution and astrophysical backgrounds, however, the most commonly applied constraints on the dark matter annihilation cross section have been derived from other regions, such as dwarf spheroidal galaxies. In this article, we study Fermi Gamma-Ray Space Telescope data from the direction of the inner Galaxy and derive stringent upper limits on the dark matter's annihilation cross section. Even for the very conservative case of a dark matter distribution with a significant (~kpc) constant-density core, normalized to the minimum density needed to accommodate rotation curve and microlensing measurements, we find that the Galactic Center constraint is approximately as stringent as those derived from dwarf galaxies (which were derived under the assumption of an NFW distribution). For NFW or Einasto profiles (again, normalized to the minimum allowed density), the Galactic Center constraints are typically stronger than those from dwarfs.
description: 20 pages, 14 figures
Degradação de Serviço em Redes Ópticas Elásticas
Creators: name: Alex Silva, Santos
Publisher: name: Zenodo
Year: 2023

description: As Redes Ópticas Elásticas são caracterizadas por oferecer canais de comunicação que podem variar de acordo com a necessidade de largura de banda das requisições, fazendo melhor uso dos recursos espectrais. No entanto, elas ainda são vulneráveis à escassez de recursos ópticos devido à situações de congestionamento ou desastres. Esta escassez pode ser provocada por aumento repentino de tráfego, desastres naturais ou mesmo ataques de destruição em massa. Neste cenário, novas abordagem precisam ser desenvolvidas para lidar com a escassez de recursos. Uma das estratégias propostas é a degradação de serviço que visa reduzir a quantidade de largura de banda oferecida para cada requisição. Portanto, esta pesquisa tem por objetivo propor e avaliar novas técnicas para lidar com a falta de recursos em Redes Ópticas Elásticas.
Quantitative test of the time dependent Gintzburg-Landau equation for sheared granular flow in two dimension
Creators: name: Saitoh, Kuniyasu
name: Hayakawa, Hisao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We examine the validity of the time-dependent Ginzburg-Landau equation of granular fluids for a plane shear flow under the Lees-Edwards boundary condition derived from a weakly nonlinear analysis through the comparison with the result of discrete element method. We verify quantitative agreements in the time evolutions of the area fraction and the velocity fields, and also find qualitative agreement in the granular temperature.
description: 10 pages, 4 figures. This paper is one of contributed papers to the proceedings of IUTAM symposium on "MOBILE PARTICULATE SYSTEMS: Kinematics, Rheology and Complex Phenomena" held at Bangalore in January 23-27, 2012
Humiliation: Protocol for a scoping review on its conceptualisations, antecedents, psychological effects, and areas for further research
Creators: name: Rea, Sandy
Publisher: name: figshare
Year: 2023
Subjects: Learning, motivation and emotion

description: CONCEPTUALISATIONS, ANTECEDENTS, AND EFFECTS OF HUMILIATION 2
 Abstract
 Introduction: Humiliation, defined variously in the literature, is a ubiquitous human
 experience evoked to explain myriad misfortunes, such as rape, murder, and terrorism. As an
 emotion, studies associate it with depression, anxiety, psychosis, and even suicide. However,
 despite this evidence base, no scoping review has focused on humiliation to date. Aim: This
 scoping review aims to map the literature on the conceptualisations of humiliation, explore its
 antecedents and effects, and identify areas for further research. Method: A scoping review
 protocol following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses
 extension for Scoping Reviews (PRISMA-ScR) and the Joanna Briggs manual for evidence
 synthesis is put forward. CINAHL, EMBASE, EMCARE, MEDLINE and PsycINFO will be
 searched with a pre-determined search strategy for qualitative, quantitative, and mixed methods
 peer-reviewed empirical papers and theses/dissertations. Abstracts and titles will be screened,
 followed by a full-text screening to identify relevant studies.
Cosmological parameter estimation: impact of CMB aberration
Creators: name: Catena, Riccardo
name: Notari, Alessio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The peculiar motion of an observer with respect to the CMB rest frame induces an apparent deflection of the observed CMB photons, {\it i.e.} aberration, and a shift in their frequency, {\it i.e.} Doppler effect. Both effects distort the temperature multipoles $a_{\ell m}$'s via a mixing matrix at {\it any} $\ell$. The common lore when performing a CMB based cosmological parameter estimation is to consider that Doppler affects only the $l=1$ multipole, and neglect any other corrections. In this paper we check the validity of this assumption in parameter estimation for a Planck-like angular resolution, both for a full-sky ideal experiment and also when sky cuts are included to model CMB foreground contaminations with a sky fraction similar to the Planck satellite. Assuming a simple fiducial cosmological model with five parameters, we simulated CMB temperature maps of the sky and added aberration and Doppler effects to the maps. We then analyzed with a MCMC in a Bayesian framework the maps with and without aberration and Doppler effects in order to assess the ability of reconstructing the parameters of the fiducial model. Although the correction on the power spectrum ${C_\ell}$ is larger than the cosmic variance at $\ell>1000$ and potentially important, we find that the bias on the parameters is negligible for Planck.
description: 17 pages, 4 figures. Corrected a numerical error, main conclusion modified
Moduli dark matter and the search for its decay line using Suzaku X-ray telescope
Creators: name: Kusenko, Alexander
name: Loewenstein, Michael
name: Yanagida, Tsutomu T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Light scalar fields called moduli arise from a variety of different models involving supersymmetry and/or string theory; thus their existence is a generic prediction of leading theories for physics beyond the standard model. They also present a formidable, long-standing problem for cosmology. We argue that an anthropic solution to the moduli problem exists in the case of small moduli masses, and that it automatically leads to dark matter in the form of moduli. The recent discovery of the 125 GeV Higgs boson implies a lower bound on the moduli mass of about a keV. This form of dark matter is consistent with the observed properties of structure formation, and it is amenable to detection with the help of X-ray telescopes. We present the results of a search for such dark matter particles using spectra extracted from the first deep X-ray observations of the Draco and Ursa Minor dwarf spheroidal galaxies, which are dark matter dominated systems with extreme mass-to-light ratios and low intrinsic backgrounds. No emission line is positively detected, and we set new constraints on the relevant new physics.
description: 8 pages, 5 figures, revtex
Em Direção à Avaliação da Sustentabilidade de Ecossistemas de Software
Creators: name: Vieira Toledo, Jenifer
Publisher: name: Zenodo
Year: 2023

description: A pesquisa sobre avaliação da sustentabilidade de SECOs pode ter pontos em comum com a pesquisa sobre avaliação da saúde de ecossistemas de software que envolve aspectos técnicos, sociais e de negócio. A tese de Doutorado (AMORIM, 2022) trata da avaliação da saúde baseada em práticas arquiteturais usadas pelo SECOs, sendo proposto um framework para Avaliação da Saúde para Ecosistemas de Software/Arquitetura de Software (HEVAL/SA). Pretendemos investigar a viabilidade de utilizar práticas sociais para avaliação da sustentabilidade de SECOs, com possível mapeamento e extensão do framework HEVAL/SA.
Rumo a sustentabilidade do software de pesquisa
Creators: name: Brito, Moara
name: von Flach, Christina
Publisher: name: Zenodo
Year: 2023

description: Ainda não existe uma definição acordada de sustentabilidade de software ou de como ela pode ser alcançada. No entanto, em engenharia de software, a sustentabilidade é frequentemente definida como a capacidade de resistir e de preservar a função de um sistema por um longo período de tempo. Esta definição aponta principalmente para a sustentabilidade técnica ao longo do tempo. Nesse contexto, devido ao uso crescente de software de pesquisa (entende-se como softwares que são desenvolvidos em universidades e laboratórios de pesquisa como parte ou para apoiar suas pesquisas), a comunidade científica recentemente tem discutido sobre sua sustentabilidade, e capacidade de apoiar a reprodução de estudos dos pesquisadores. Nesse contexto, acreditando que ainda há oportunidades de contribuir com a melhoria da sustentabilidade do software de pesquisa, foi realizada uma pesquisa exploratória e snowballing em busca de lacunas de pesquisa.
Disordered weak and strong topological insulators
Creators: name: Kobayashi, Koji
name: Ohtsuki, Tomi
name: Imura, Ken-Ichiro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A global phase diagram of disordered weak and strong topological insulators is established numerically. As expected, the location of the phase boundaries is renormalized by disorder, a feature recognized in the study of the so-called topological Anderson insulator. Here, we report unexpected quantization, i.e., robustness against disorder of the conductance peaks on these phase boundaries. Another highlight of the work is on the emergence of two subregions in the weak topological insulator phase under disorder. According to the size dependence of the conductance, the surface states are either robust or "defeated" in the two subregions. The nature of the two distinct types of behavior is further revealed by studying the Lyapunov exponents.
description: 5 pages, 4 figures, published version
Maturity Level of Software Systems to Comply with the General Data Protection Law (LGPD)
Creators: name: Soares, Cleberton Carvalho
Publisher: name: Zenodo
Year: 2023

description: The General Data Protection Law (LGPD) establishes guidelines for processing personal data with a strong emphasis on ethical considerations. Compliance with the LGPD is mandatory in software systems and non-compliance brings significant consequences. Accurately interpreting the text of the law for system specifications is a challenging task to be carried out from scratch, and the lack of knowledge in LGPD makes it challenging to achieve symmetry that enables business continuity. Our research addresses aspects of developing software systems in compliance with the LGPD, aiming to provide a valuable resource for professionals and researchers in the area and expand the body of knowledge with less legal content in Brazilian law, which is recent.
L. Douzou, avec la collaboration de B. Gavand et A.-C. Janier-Malnoury, Voler les Juifs. Lyon, 1940–1944, préface de J.-M. Chanon, 2002
Creators: name: Jungius, Martin
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 3 (2004)
Understanding the Dynamical State of Globular Clusters: Core-Collapsed vs Non Core-Collapsed
Creators: name: Chatterjee, Sourav
name: Umbreit, Stefan
name: Fregeau, John M.
name: Rasio, Frederic A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the dynamical evolution of globular clusters using our Hénon-type Monte Carlo code for stellar dynamics including all relevant physics such as two-body relaxation, single and binary stellar evolution, Galactic tidal stripping, and strong interactions such as physical collisions and binary mediated scattering. We compute a large database of several hundred models starting from broad ranges of initial conditions guided by observations of young and massive star clusters. We show that these initial conditions very naturally lead to present day clusters with properties including the central density, core radius, half-light radius, half-mass relaxation time, and cluster mass, that match well with those of the old Galactic globular clusters. In particular, we can naturally reproduce the bimodal distribution in observed core radii separating the "core-collapsed" vs the "non core-collapsed" clusters. We see that the core-collapsed clusters are those that have reached or are about to reach the equilibrium "binary burning" phase. The non core-collapsed clusters are still undergoing gravo-thermal contraction.
description: 42 pages, 12 figures, 1 table, submitted to MNRAS
Técnicas antifraude para o reconhecimento facial em ambientes não controlados
Creators: name: Jesus, Leone
Publisher: name: Zenodo
Year: 2023

description: A precisão de métodos automáticos de reconhecimento facial alcançou resultados satisfatórios em conjuntos de imagens que há alguns anos são considerados desafiadores. Nos anos mais recentes, tem até mesmo superado o desempenho humano nessa tarefa. Contudo, existem estratégias de fraude que facilmente burlam muitos desses sistemas de reconhecimento facial, em especial os baseados em textura. Apesar de existirem diversos trabalhos de antifraude em imagens de textura na literatura, seus experimentos e resultados não representam o desafio para aplicações do mundo real de forma convincente. Isso ocorre pela falta de variabilidade nos conjuntos de imagens disponíveis publicamente para o desenvolvimento de métodos de antifraude. O objetivo desse trabalho é desenvolver um método de antifraude utilizando imagens de textura de faces em ambientes menos controlados, de forma a alcançar resultados similares aos de reconhecimento facial em cenários mais realistas. Nossa atual proposta para criar um descritor genérico é adaptar um modelo baseado em meta-learning como um classificador de apenas uma classe, com o objetivo de aprender o que são faces reais. Assim, tal descritor pode aprender a distinguir faces reais de faces falsas e posteriormente passar por um processo de refinamento. Tal refinamento, seria baseado em imagens utilizadas em bases de reconhecimento facial, que são menos controladas e mais abundantes que bases para antifraude.
Distorting General Relativity: Gravity's Rainbow and f(R) theories at work
Creators: name: Garattini, Remo
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the Zero Point Energy in a spherically symmetric background combining the high energy distortion of Gravity's Rainbow with the modification induced by a f(R) theory. Here f(R) is a generic analytic function of the Ricci curvature scalar R in 4D and in 3D. The explicit calculation is performed for a Schwarzschild metric. Due to the spherically symmetric property of the Schwarzschild metric we can compare the effects of the modification induced by a f(R) theory in 4D and in 3D. We find that the final effect of the combined theory is to have finite quantities that shift the Zero Point Energy. In this context we setup a Sturm-Liouville problem with the cosmological constant considered as the associated eigenvalue. The eigenvalue equation is a reformulation of the Wheeler-DeWitt equation which is analyzed by means of a variational approach based on gaussian trial functionals. With the help of a canonical decomposition, we find that the relevant contribution to one loop is given by the graviton quantum fluctuations around the given background. A final discussion on the connection of our result with the observed cosmological constant is also reported.
description: RevTeX 4, 19 Pages. To be published in JCAP. References addes
Measurement of B(B-->X_s γ), the B-->X_s γ photon energy spectrum, and the direct CP asymmetry in B-->X_{s+d} γ decays
Creators: name: The BABAR Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The photon spectrum in B --> X_s γ decay, where X_s is any strange hadronic state, is studied using a data sample of (382.8\pm 4.2) \times 10^6 e^+ e^- --> Υ(4S) --> BBbar events collected by the BABAR experiment at the PEP-II collider. The spectrum is used to measure the branching fraction B(B --> X_s γ) = (3.21 \pm 0.15 \pm 0.29 \pm 0.08)\times 10^{-4} and the first, second, and third moments = 2.267 \pm 0.019 \pm 0.032 \pm 0.003 GeV,, )^2> = 0.0484 \pm 0.0053 \pm 0.0077 \pm 0.0005 GeV^2, and )^3> = -0.0048 \pm 0.0011 \pm 0.0011 \pm 0.0004 GeV^3, for the range E_γ> 1.8 GeV, where E_γ is the photon energy in the B-meson rest frame. Results are also presented for narrower E_γ ranges. In addition, the direct CP asymmetry A_{CP}(B --> X_{s+d} γ) is measured to be 0.057 \pm 0.063. The spectrum itself is also unfolded to the B-meson rest frame; that is the frame in which theoretical predictions for its shape are made.
description: 37 pages, 19 postscript figures, submitted to Phys. Rev. D. No analysis or results have changed from previous version. Some changes to improve clarity based on interactions with Phys. Rev. D referees, including one new Figure (Fig. 13), and some minor wording/punctuation/spelling mistakes fixed
Nonlocal correlations in a proximity-coupled normal metal
Creators: name: Noh, Taewan
name: Davis, Sam
name: Chandrasekhar, Venkat
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report evidence of large, nonlocal correlations between two spatially separated normal metals in superconductor/normal-metal (SN) heterostructures, which manifest themselves a nonlocal voltage generated in response to a driving current. Unlike prior experiments in SN heterostructures, the nonlocal correlations are mediated not by a superconductor, but by a proximity-coupled normal metal. The nonlocal correlations extend over relatively long length scales in comparison to the superconduncting case. At very low temperatures, we find a reduction in the nonlocal voltage for small applied currents that cannot be explained by the quasiclassical theory of superconductivity. We believe is a signature of new long-range quantum correlations in the system.
description: (paper) 8 pages, 5 figures
BD Covid-19
Creators: name: Hernandez-Bustamante, Enrique A.
name: Acuña Chávez, Luis Miguel
name: Aguilar Villlanueva, Giamfranco Anthony
Publisher: name: figshare
Year: 2021
Subjects: subject: 110202 Haematology
subject: FOS: Clinical medicine
subject: 110310 Intensive Care

description: Scdfgñskfdljgsfdkg
Der Verlauf der spätantiken Langmauer in der Vulkaneifel: Ein Vergleich historischer Kartierungen mit aktuellen Laserscandaten
Creators: name: Heimerl, Ferdinand
name: Lang, Timo
name: Schmitz, Sascha David
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 48 (2016): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Serviços de Saúde Avançados: Conectividade e Segurança em Sistemas de Vida Assistida
Creators: name: Viriato Ribeiro, Adriana
name: Nascimento Sampaio, Leobino
Publisher: name: Zenodo
Year: 2023

description: O ambiente de vida assistida é um serviço avançado de saúde que inclui aplicações em espaços inteligentes e o monitoramento da saúde de indivíduos, independente de sua localização. O desenvolvimento dessas aplicações segue diferentes tecnologias, como a Internet das Coisas, protocolos de comunicação de curto e longo alcance, middlewares, computação em nuvem e inteligência artificial. A heterogeneidade dos componentes que fazem parte dessas arquiteturas e dos próprios protocolos de comunicação utilizados geram desafios para alcançar os requisitos de rede e segurança das aplicações. Assim, um dos produtos da minha tese é identificar requisitos de comunicação e segurança nesses cenários e os principais desafios para endereçá-los.
Implications of QCD radiative corrections on high-pT Higgs searches
Creators: name: Banfi, Andrea
name: Cancino, Julián
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the effect of next-to-leading order (NLO) QCD corrections to the Higgsstrahlung process, where the Higgs boson decays to bottom quarks, using a partonic-level fully differential code. First we evaluate the impact of initial- and final-state gluon radiation on the reconstruction of a mass peak with the fat-jet analysis in the boosted regime at the LHC with sqrt(s) = 14 TeV as proposed in Butterworth et al. (2008) [1]. Finally we study the current CMS search strategy for this channel and compare it to the fat-jet procedure at the LHC with sqrt(s) = 8 TeV. Both show that final-state QCD radiation has a sizable effect and should be taken properly into account.
description: 16 pages, 5 figures, version accepted for publication
Im Dialog mit wichtigen Zeitströmungen
Creators: name: Der Bauhaus-Universität, Medieninformation
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2019

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 24 Nr. 1 (2018): AKMB-news
Método de concept drift para aprendizado online com redes neurais na Fog Computing
Creators: name: Brenno de Mello Alencar
Publisher: name: Zenodo
Year: 2023

description: A Internet of Things tem produzido infraestruturas e aplicações que geram grande volume de dados. Esses dados são geralmente fluxos de dados que têm a característica de serem contínuos e infinitos, e também apresentam a particularidade de modificar o seu comportamento ao longo do tempo. Embora a Cloud Computing forneça à infraestrutura IoT o tratamento adequado sob aspectos relacionados à escalabilidade e centralização dos recursos, a distância entre os dispositivos e a nuvem pode impor limitações para atingir baixa latência no tráfego de dados. Visando manter a escalabilidade, obter baixa latência e diminuir o tráfego de dados entre os dispositivos IoT e a Nuvem, a Fog Computing foi proposta. Apesar da Fog Computing estabelecer a disponibilização dos recursos na borda da rede, as tecnologias e técnicas utilizadas atualmente para processamento e análise de dados IoT podem não ser suficientes para suportar os fluxos contínuos e ilimitados de dados que as plataformas e aplicações IoT produzem. Dessa forma, este trabalho apresenta uma abordagem para processamento e análise de fluxos de dados da Internet das Coisas em tempo real na Fog. Essa abordagem tem como objetivo principal reduzir a quantidade de dados transmitidos na infraestrutura de rede, o que permite, como consequência, realizar uma modelagem de dados online, detectando mudanças no comportamento do fluxo de dados e redução do uso da Internet.
Localization for a random walk in slowly decreasing random potential
Creators: name: Gallesco, Christophe
name: Popov, Serguei
name: Schütz, Gunter M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10, 60K37

description: We consider a continuous time random walk $X$ in random environment on $\Z^+$ such that its potential can be approximated by the function $V: \R^+\to \R$ given by $V(x)=\sig W(x) -\frac{b}{1-\alf}x^{1-\alf}$ where $\sig W$ a Brownian motion with diffusion coefficient $\sig>0$ and parameters $b$, $\alf$ are such that $b>0$ and $0
description: 14pages, 7 figures
Distribution of entanglement in large-scale quantum networks
Creators: name: Perseguers, S.
name: Lapeyre, G. J.
name: Cavalcanti, D.
name: Lewenstein, M.
name: Acín, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The concentration and distribution of quantum entanglement is an essential ingredient in emerging quantum information technologies. Much theoretical and experimental effort has been expended in understanding how to distribute entanglement in one-dimensional networks. However, as experimental techniques in quantum communication develop, protocols for multi-dimensional systems become essential. Here, we focus on recent theoretical developments in protocols for distributing entanglement in regular and complex networks, with particular attention to percolation theory and network-based error correction.
description: 60 pages, 24 figures; updated references; clarified text; typographical corrections
Classification of Dental Conditions using Textual Reports supported by Large Language Models, and Semi-Supervised and Self-Supervised Learning
Creators: name: Silva, Bernardo
Publisher: name: Zenodo
Year: 2023

description: Screening dental panoramic radiographs offers versatile diagnostic opportunities yet also presents significant complexity. Consequently, these radiographs have attracted extensive research interest. Most of these studies utilize Deep Learning within a supervised framework for their experimental design. Nevertheless, the scarcity of labeled data presents a substantial challenge for training the highly parametrized neural networks typically employed in such research. We propose a framework to classify many dental conditions of panoramic radiographs exploring semi-supervised learning and self-supervised learning. As a semi-supervised learning technique, our experiments used the an instance segmentation neural network to detect the teeth of the unlabeled radiographs. We employed the Masked Autoencoders (MAE) strategy as a self-supervised technique on large-version Vision Transformers (ViTs) to leverage their outcomes and improve the efficiency of the trained networks. Finally, we finetuned the ViTs and measure the performance using the Matthew Correlation Coefficient (MCC), a robust statistic for binary classifications.
Real-space renormalization-group approach to the random transverse-field Ising model in finite dimensions
Creators: name: Miyazaki, Ryoji
name: Nishimori, Hidetoshi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The transverse-field Ising models with random exchange interactions in finite dimensions are investigated by means of a real-space renormalization-group method. The scheme yields the exact values of the critical point and critical exponent nu in one dimension and some previous results in the case of random ferromagnetic interactions are reproduced in two and three dimensions. We apply the scheme to spin glasses in transverse fields in two and three dimensions, which have not been analyzed very extensively. The phase diagrams and the critical exponent nu are obtained and evidence for the existence of an infinite-randomness fixed point in these models is found.
description: 12 pages, 15 figures, minor revision in version 2
Induced scalarization in boson stars and scalar gravitational radiation
Creators: name: Ruiz, Milton
name: Degollado, Juan Carlos
name: Alcubierre, Miguel
name: Nunez, Dario
name: Salgado, Marcelo
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The dynamical evolution of boson stars in scalar-tensor theories of gravity is considered in the physical (Jordan) frame. We focus on the study of spontaneous and induced scalarization, for which we take as initial data configurations on the well-known S-branch of a single boson star in general relativity. We show that during the scalarization process a strong emission of scalar radiation occurs. The new stable configurations (S-branch) of a single boson star within a particular scalar-tensor theory are also presented.
description: 18 pages, 11 figures. Minor changes to match the published version
Ludwig Wamser, Mauenheim und Bargen
Creators: name: Arnold, Bettina
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Ludwig Wamser, Mauenheim und Bargen. Zwei Grabhügelfelder der Hallstatt- und Frühlatènezeit aus dem nördlichen Hegau. Compiled by Andrea Bräuning, with contributions by Wolfgang Löhlein, Corina Knipper, Marcus Stecher, Elisabeth Stephan and Joachim Wahl. Forschungen und Berichte zur Vor- und Frühgeschichte in Baden-Württemberg volume 2. Dr. Ludwig Reichert, Wiesbaden 2016. € 59.00. ISBN 978-3954902163. 500 pages with 58 plates, some in colour, 7 maps
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
A new approach to simulating collisionless dark matter fluids
Creators: name: Hahn, Oliver
name: Abel, Tom
name: Kaehler, Ralf
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recently, we have shown how current cosmological N-body codes already follow the fine grained phase-space information of the dark matter fluid. Using a tetrahedral tesselation of the three-dimensional manifold that describes perfectly cold fluids in six-dimensional phase space, the phase-space distribution function can be followed throughout the simulation. This allows one to project the distribution function into configuration space to obtain highly accurate densities, velocities, and velocity dispersions. Here, we exploit this technique to show first steps on how to devise an improved particle-mesh technique. At its heart, the new method thus relies on a piecewise linear approximation of the phase space distribution function rather than the usual particle discretisation. We use pseudo-particles that approximate the masses of the tetrahedral cells up to quadrupolar order as the locations for cloud-in-cell (CIC) deposit instead of the particle locations themselves as in standard CIC deposit. We demonstrate that this modification already gives much improved stability and more accurate dynamics of the collisionless dark matter fluid at high force and low mass resolution. We demonstrate the validity and advantages of this method with various test problems as well as hot/warm-dark matter simulations which have been known to exhibit artificial fragmentation. This completely unphysical behaviour is much reduced in the new approach. The current limitations of our approach are discussed in detail and future improvements are outlined.
description: 23 pages, 20 figures; minor changes; matches version accepted for publication in MNRAS
A CONCEPTUAL FRAMEWORK FOR THE DESIGN OF VIRTUAL LEARNING ENVIRONMENTS
Creators: name: Lima, Mayka
name: Pitangueira, Rita
name: David, José Maria
Publisher: name: Zenodo
Year: 2023

description: Several digital technological resources (DTRs) are adapted to use learning strategies for VLEs found in the literature, such as collaborative learning. Learning strategies have been modified to adapt traditional procedures and techniques to the technological tools. It is necessary to support the features of instructional design that look at design issues in the difficulties and challenges of teachers in adapting teaching practices. Using a conceptual framework can help in the composition of the instructional design. So is it possible to design a conceptual framework that supports the functionalities of the learning environment for education professionals to design the lessons according to their instructional design? A conceptual framework for the instructional design of learning theory strategies in VLEs is proposed. A survey and interviews will define the methodologies and DTRs used by educational professionals. The expected results will be triangulated and analyzed for the design of the conceptual framework. Thus, the conceptual framework proposed in this work aims to identify and present the conceptual definitions that involve the field of requirements engineering and their relationships. Within this framework, an organizational model of the concepts for learning strategies is proposed, where all information is validated through the consensus opinion of several experts in the field.
Universal Fractional Map and Cascade of Bifurcations Type Attractors
Creators: name: Edelman, Mark
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences
subject: 34A08

description: We modified the way in which the Universal Map is obtained in the regular dynamics to derive the Universal $α$-Family of Maps depending on a single parameter $α> 0$ which is the order of the fractional derivative in the nonlinear fractional differential equation describing a system experiencing periodic kicks. We consider two particular $α$-families corresponding to the Standard and Logistic Maps. For fractional $α<2$ in the area of parameter values of the transition through the period doubling cascade of bifurcations from regular to chaotic motion in regular dynamics corresponding fractional systems demonstrate a new type of attractors - cascade of bifurcations type trajectories.
description: 10 pages 8 figures
Value-Based Approach to Support  Technical Debt Management in  Software Development
Creators: name: Bittencourt, João Pedro
name: Maciel, Rita Suzana
Publisher: name: Zenodo
Year: 2023
Subjects: theory
VBSE
Technical debt

description: The concept of technical debt (TD) refers to the problems faced during the software development process, where the process tasks are not performed properly. Both industry and academia have given significant attention to TD research throughout the software development lifecycle. However, we still know little about the motivation surrounding the actions that make stakeholders contract or pay a debt. Value-based software engineering is a research area that emphasizes value thinking in software-related decisions, so we can optimize decision-making at all levels to meet or reconcile the explicit objectives of the stakeholders involved. This work aims to present an approach that focuses on the value propositions that the main stakeholders of a software development process use during the selection and fix of technical debts. From the elaborated theory, We want to propose a approach to support TD management and evaluate it through case studies with academia and industry.
MPEC 2023-F104 : 2023 EG3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 EG3

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.
On the determinant representations of Gaudin models' scalar products and form factors
Creators: name: Faribault, Alexandre
name: Schuricht, Dirk
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose alternative determinant representations of certain form factors and scalar products of states in rational Gaudin models realized in terms of compact spins. We use alternative pseudo-vacuums to write overlaps in terms of partition functions with domain wall boundary conditions. Contrarily to Slavnovs determinant formulas, this construction does not require that any of the involved states be solutions to the Bethe equations; a fact that could prove useful in certain non-equilibrium problems. Moreover, by using an atypical determinant representation of the partition functions, we propose expressions for the local spin raising and lowering operators form factors which only depend on the eigenvalues of the conserved charges. These eigenvalues define eigenstates via solutions of a system of quadratic equations instead of the usual Bethe equations. Consequently, the current work allows important simplifications to numerical procedures addressing decoherence in Gaudin models.
description: 15 pages, 0 figures, Published version
Michel Provost, Carte Archeologique de la Gaule 45.
Creators: name: Heimberg, Ursula
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Michel Provost, Carte Archeologique de la Gaule 45. Le Loiret. Edition Académie des Inscriptions et Belles-Lettres, Paris 1988. 249 Seiten, 47 Abbildungen.
description: Bonner Jahrbücher, Bd. 189.1989: Bonner Jahrbücher
Explorando características de redes de dados nomeados para oferecer serviços na borda das redes para aplicações distribuídas por meio de redes veiculares
Creators: name: Araujo, Guilherme
name: Sampaio, Leobino
Publisher: name: Zenodo
Year: 2023

description: Em redes veiculares (VANETs) há vários sistemas de transporte que se apoiam em diferentes modelos dependentes do IP para comunicação entre veículos. Entretanto, muitas abordagens não são seguras e adequadas para o contexto, utilizando-se de tecnologias específicas, arquiteturas de rede ou modelos de comunicação limitados. Além disso, muitas aplicações acabam tendo que lidar com questões complexas de serviços não ofertados pela rede.
Anomalous angular dependence of the upper critical induction of orthorhombic ferromagnetic superconductors with completely broken p-wave symmetry
Creators: name: Lörscher, Christopher
name: Zhang, Jingchuan
name: Gu, Qiang
name: Klemm, Richard A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We employ the Klemm-Clem transformations to map the equations of motion for the Green functions of a clean superconductor with a general ellipsoidal Fermi surface (FS) characterized by the effective masses $m_1, m_2$, and $m_3$ in the presence of an arbitrarily directed magnetic induction ${\bm B}=B(\sinθ\cosϕ,\sinθ\sinϕ,\cosθ)$ onto those of a spherical FS. We then obtain the transformed gap equation for a transformed pairing interaction $\tilde{V}(\hat{\tilde{\bm k}},\hat{\tilde{\bm k}}')$ appropriate for any orbital order parameter symmetry. We use these results to calculate the upper critical induction $B_{c2}(θ,ϕ)$ for an orthorhombic ferromagnetic superconductor with transition temperatures $T_{\rm Curie}>T_c$. We assume the FS is split by strong spin-orbit coupling, with a single parallel-spin ($\uparrow\uparrow$) pairing interaction of the \textit{p}-wave polar state form locked onto the $\hat{\bm e}_3$ crystal axis normal to the spontaneous magnetization ${\bm M}_0\perp\hat{\bm e}_3$ due to the ferromagnetism. The orbital harmonic oscillator eigenvalues are modified according to $B\rightarrow Bα$, where $α(θ,ϕ)=\sqrt{m_3/m}\sqrt{\cos^2θ+γ^{-2}(ϕ)\sin^2θ}$, $γ^2(ϕ)=m_3/(m_1\cos^2ϕ+m_2\sin^2ϕ)$ and $m=(m_1m_2m_3)^{1/3}$. At fixed $ϕ$, the order parameter anisotropy causes $B_{c2}$ to exhibit a novel $θ$-dependence, which for $γ^2(ϕ)>3$ becomes a double peak at $0^{\circ}
description: 12 pages 5 figures, accepted for publication in Phys. Rev. B
Optimal Weighting in Galaxy Surveys: Application to Redshift-Space Distortions
Creators: name: Hamaus, Nico
name: Seljak, Uroš
name: Desjacques, Vincent
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using multiple tracers of large-scale structure allows to evade the limitations imposed by sampling variance for some parameters of interest in cosmology. We demonstrate the optimal way of carrying out a multitracer analysis in a galaxy redshift survey by considering the principal components of the shot noise matrix from two-point clustering statistics. We show how to construct two tracers that maximize the benefits of sampling variance and shot noise cancellation using optimal weights. On the basis of high-resolution N-body simulations of dark matter halos we apply this technique to the analysis of redshift-space distortions and demonstrate how constraints on the growth rate of structure formation can be substantially improved. The primary limitation are nonlinear effects, which cause significant biases in the method already at scales of k<0.1h/Mpc, suggesting the need to develop nonlinear models of redshift-space distortions in order to extract the maximum information from future redshift surveys. Nonetheless we find gains of a factor of a few in constraints on the growth rate achievable when merely the linear regime of a galaxy survey like EUCLID is considered.
description: v1: 16 pages, 8 figures, 1 table. Submitted to PRD v2: Matched PRD published version
A pseudo-differential calculus on graded Lie groups
Creators: name: Fischer, Veronique
name: Ruzhansky, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: Analysis of PDEs (math.AP)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 35S05, 43A80

description: In this paper, we present first results of our investigation regarding symbolic pseudo-differential calculi on nilpotent Lie groups. On any graded Lie group, we define classes of symbols using difference operators. The operators are obtained from these symbols via the natural quantisation given by the representation theory. They form an algebra of operators which shares many properties with the usual Hormander calculus.
description: conference Aalto University, Helsinki, June 2012
Imitating Chemical Motors with Optimal Information Motors
Creators: name: Horowitz, Jordan M.
name: Sagawa, Takahiro
name: Parrondo, Juan M. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: To induce transport, detailed balance must be broken. A common mechanism is to bias the dynamics with a thermodynamic fuel, such as chemical energy. An intriguing, alternative strategy is for a Maxwell demon to effect the bias using feedback. We demonstrate that these two different mechanisms lead to distinct thermodynamics by contrasting a chemical motor and information motor with identical dynamics. To clarify this difference, we study both models within one unified framework, highlighting the role of the interaction between the demon and the motor. This analysis elucidates the manner in which information is incorporated into a physical system.
description: 5 pages, 3 figures, new conclusion, added supplemental material
Twisted N=1, d=4 supergravity and its symmetries
Creators: name: Baulieu, Laurent
name: Bellon, Marc
name: Reys, Valentin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We display the construction of a twisted superalgebra for the N=1 Euclidian supergravity on 4-manifolds with an almost complex structure. It acts on a representation of twisted supersymmetry made of forms with odd and even statistics and it is covariant under a SU(2)\subset SO(4) Lorentz invariance of the manifold's tangent-space. It contains 4 twisted supersymmetry generators, one nilpotent scalar, one vector and one pseudo-scalar. The superalgebra closes on the twisted fields of supergravity in its new minimal set of auxiliary fields. Its couplings to the twisted Wess and Zumino and vector multiplets are also determined.
description: Added references and corrected misprints
A Hasse Principle for Periodic Points
Creators: name: Towsley, Adam
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $F$ be a global field, let $\vp \in \Fx$ be a rational map of degree at least 2, and let $\a \in F$. We say that $\a $ is periodic if $\vpn (\a) = \a$ for some $n \geq 1$. A Hasse principle is the idea, or hope, that a phenomenon which happens everywhere locally should happen globally as well. The principle is well known to be true in some situations and false in others. We show that a Hasse principle holds for periodic points, and further show that it is sufficient to know that $\a$ is periodic on residue fields for every prime in a set of natural density density 1 to know that $\a$ is periodic in $F$.
description: 15 pages, no figures