1,723,618 research outputs found
SPDA: nova NBR 5419 e suas características relevantes
No full textEssa aula apresenta as principais mudanças ocorridas na NBR 5419 e como a mesma é estruturada.https://www.youtube.com/watch?v=DcZAQlc8IZ
The isotropic center of NGC 5419 -- A core in formation?
Get PDFWith its cored surface brightness profile, the elliptical galaxy NGC 5419
appears as a typical high-mass early-type galaxy (ETG). However, the galaxy
hosts two distinct nuclei in its center. We use high-signal MUSE (Multi-Unit
Spectroscopic Explorer) spectral observations and novel triaxial dynamical
orbit models to reveal a surprisingly isotropic central orbit distribution in
NGC 5419. Recent collisionless simulations of merging massive ETGs suggest a
two-phase core formation model, in which the low-density stellar core forms
rapidly by supermassive black holes (SMBHs) sinking into the center due to
dynamical friction. Only afterwards the SMBHs form a hard binary and the black
hole scouring process slowly changes the central orbit distribution from
isotropic to tangential. The observed cored density profile, the double nucleus
and the isotropic center of NGC 5419 together thus point to an intermediate
evolutionary state where the first phase of the core formation has taken place,
yet the scouring process is only beginning. This implies that the double
nucleus is a SMBH binary. Our triaxial dynamical models indicate a total mass
of the two SMBHs in the center of NGC 5419 of MBH = (1.0 +/- 0.08) 10^10 Msol.
Moreover, we find that NGC 5419's complex kinematically distinct core (KDC) can
be explained by a coherent flip of the orbital rotation direction of stars on
tube orbits at ~3kpc distance from the galaxy center together with projection
effects. This is also in agreement with merger simulations hosting SMBHs in the
same mass regime.Comment: Accepted for publication by Ap
Block Card 5419 Douglas Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: 20th Century Commercial Style | 5419 Douglas Road (Toledo, Ohio) | commercial buildings | Cowan Place Addition (Toledo, Ohio) | Greenwood Park area (Toledo, Ohio
[Carolina Clinchfield & Ohio Ry., Engine Drawing Card, Sketch No. 5419]
No full textThis engine drawing card was created for Carolina Clinchfield & Ohio Railway, Class 16 42/68 DD. Section N-16 1/4 DD. Sketch 5419. Copy Spec. [field left blank]
Estudo comparativo da atualização da NBR 5419/2005 para a NBR 5419/2015 e aplicação prática para canteiro de obras em área de mineração
No full textThis paper is based on the current national standard for protection against atmospheric discharges (ABNT NBR 5419:2015), making an analysis of the changes that have occurred since its previous version published in 2005. Finally, it demonstrates a practical application in a construction site located in an area of mining activity. Elaborating an SPDA that meets the current standards, as well as the demands requested for the site and its physical characteristics. Of all the changes that occurred between the two versions of NBR 5419, the one with the greatest impact on the elaboration of an SPDA project is the risk analysis, including new parameters to be considered in order to determine the risks of a hazardous event. In order to make this analysis more practical and less exhaustive regarding the calculations, an Excel spreadsheet will be used as a tool to perform the calculations. This tool considers all the values and parameters as provided by NBR 5419. This way it will be possible to verify if the project is effectively able to protect the structure from a possible lightning discharge. The final chapter of this work contains the SPDA project that was developed and implemented for this construction site.Este trabalho tem como base a atual norma nacional de proteção contra descargas atmosféricas (ABNT NBR 5419:2015), fazendo uma análise das mudanças ocorridas desde sua versão anterior publicada em 2005. De todas as mudanças ocorridas entre as duas versões da NBR 5419 a de maior impacto para elaboração de um projeto de SPDA é a análise de risco, incluindo novos parâmetros a serem considerados para determinar os riscos de um evento perigoso. Com o intuito de tornar esta análise mais prática e pouco exaustiva quanto aos cálculos será usado uma planilha em Excel como ferramenta para realização dos cálculos, esta ferramenta considera todos os valores e parâmetros conforme fornecido pela NBR 5419. Assim será possível verificar se o projeto está efetivamente apto para proteger a estrutura de uma possível descarga atmosférica. Por fim demonstra uma aplicação prática realizado a um canteiro de obras situado em área de atividade de mineração. Elaborando um SPDA que atenda as Normas Vigentes, bem como as demandas solicitadas para o local e as suas características físicas. No capítulo final deste trabalho, encontra-se o projeto do SPDA que foi elaborado e implantado para o referido canteiro de obra
SPDA Externo não isolado: características e a isolação elétrica em conformidade com A NBR 5419/2015
No full textEssa aula apresenta o cálculo da distância de isolação e as algumas características do SPDA não isolado, conforme NBR 5419 parte 3.https://www.youtube.com/watch?v=55-mthCT0E
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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