Results 21 to 30 of about 62,224 (137)

Finito: A Faster, Permutable Incremental Gradient Method for Big Data Problems [PDF]

, 2014
Recent advances in optimization theory have shown that smooth strongly convex finite sums can be minimized faster than by treating them as a black box "batch" problem.
Caetano, Tibério S., Defazio, Aaron J., Domke, Justin   +2 more
core   +3 more sources

On the binarity of the classical Cepheid X Sgr from interferometric observations

, 2012
Optical-infrared interferometry can provide direct geometrical measurements of the radii of Cepheids and/or reveal unknown binary companions of these stars.
Antoniucci, S., Bono, G., Causi, G. Li, Giannini, T., Lorenzetti, D., Nisini, B., Pedicelli, S.   +6 more
core   +1 more source

Solução de um Problema de Transporte de Contaminante em Corpos Hídricos Utilizando o Método dos Volumes Finitos

Revista Cereus, 2021
As water is one of the fundamental resources for the quality of life and existence of future generations, environmental preservation becomes the duty of every human being. However, the existence of some type of pollution in most rivers in Brazil is noteworthy and, faced with situations like this worldwide, the United Nations itself emphasizes the ...
Anna Luisa Soares Castro Coimbra, Wagner Rambaldi Telles, Fábio Freitas Ferreira, Jader Lugon Junior   +3 more
openaire   +2 more sources

Universal restrictions to the conversion of heat into work derived from the analysis of the Nernst theorem as a uniform limit

, 2003
We revisit the relationship between the Nernst theorem and the Kelvin-Planck statement of the second law. We propose that the exchange of entropy uniformly vanishes as the temperature goes to zero. The analysis of this assumption shows that is equivalent
, Alfredo Rey de Luna, Baierlein R, Balian R, Belgiorno F, Carathéodory C, Clausius R, Epstein P, Huang K, Jones D S, Jos Mar a Mart n-Olalla, Kestin J, Kestin J (ed), Landau L, Landsberg P, Landsberg P, Landsberg P, Liboff R, Mafé S, Nernst W, Nernst W, Oppenheim I, Planck M, Rose-Innes C, Thomson W, Wu J, Yan Z, Zemansky M   +27 more
core   +1 more source

What causes the large extensions of red-supergiant atmospheres? Comparisons of interferometric observations with 1-D hydrostatic, 3-D convection, and 1-D pulsating model atmospheres

, 2015
We present the atmospheric structure and the fundamental parameters of three red supergiants, increasing the sample of RSGs observed by near-infrared spectro-interferometry.
Abellan, F. J., Arroyo-Torres, B., Chiavassa, A., Freytag, B., Hauschildt, P. H., Marcaide, J. M., Scholz, M., Wittkowski, M., Wood, P. R.   +8 more
core   +1 more source

Equação de Riccati na descrição do movimento de um veículo por meio de uma propulsão hidráulica

CQD Revista Eletrônica Paulista de Matemática, 2017
Nesse artigo é analisado o movimento retilíneo de um veículo adquirido pela ação de um jato de água propelido por uma catapulta hidráulica em um tempo finito onde o parâmetro é a velocidade do jato.
Jorge Corrêa de Araújo, Rosa García Márquez   +1 more
doaj  

NaturWall©: facciate in legno multifunzionali per la riqualificazione del patrimonio edilizio / NaturWall©:multifunctional wood façade in existent building refurbishment [PDF]

, 2012
Naturwall© is a research conducted by Politecnico of Turin (DAD) (under supervision of Prof.G.Callegari) and a local PMI support (Natural House, Castellamonte), promoted by Giovanni Goria Foundation "Master dei Talenti" programme.
Spinelli, Antonio
core  

VLTI/AMBER spectro-interferometry of the late-type supergiants V766 Cen (=HR 5171 A), sigma Oph, BM Sco, and HD 206859

, 2016
We add four warmer late-type supergiants to our previous spectro-interferometric studies of red giants and supergiants. V766 Cen (=HR 5171 A) is found to be a high-luminosity log(L/L_sun)=5.8+-0.4 source of Teff 4290+-760 K and radius 1490+-540 Rsun ...
Abellan, F. J., Arroyo-Torres, B., Chiavassa, A., Guirado, J. C., Marcaide, J. M., Wittkowski, M.   +5 more
core   +1 more source

Desarrollo de un simulador de flujo de fluidos usando el método volúmenes finitos basado en elementos para mallas no estructuradas Computational simulation of fluid flow by using element based finite volume method on unstructured grids

Revista Técnica de la Facultad de Ingeniería, 2008
En este trabajo, se presentan los resultados obtenidos luego del desarrollo de un simulador de problemas de flujo de fluidos en régimen laminar, estado estable, usando el método de volúmenes finitos basado en elementos, para dominios bidimensionales ...
Carlos D Araujo, José A Rincón, Gilberto I Materano, Alejandro A Colman   +3 more
doaj  

Efecto del modelo de combustión en la predicción del campo de temperatura y presión de una cámara anular The effect of the combustion model on the prediction of temperature and pressure fields in an anular combustor

Revista Técnica de la Facultad de Ingeniería, 2008
Esta investigación tiene como objetivo comparar los campos de temperatura y presión predichos por los modelos: equilibrio químico adiabático y tasa finita generalizada, en una cámara de combustión anular de una turbina a gas de eje partido.
Gilberto Materano, Carlos Araujo, Numa Márquez, Alejandro Colman   +3 more
doaj