Results 21 to 30 of about 269,206 (174)
A CONSTRUÇÃO DE UM INSTITUTO DE PESQUISAS MATEMÁTICAS NOS TRÓPICOS – O IMPA
Revista Brasileira de História da Matemática, 2020 Descreve a criação do Instituto de Matemática Pura e Aplicada (IMPA), atualmente denominado Associação Instituto Nacional de Matemática Pura e Aplicada, no Rio de Janeiro, em 1952, como primeiro Instituto dedicado exclusivamente à pesquisa matemática no ...
Circe Mary Silva da Silva
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CFD simulation of a hyperloop capsule inside a closed environment
Results in Engineering, 2021 One of the most restrictive conditions in ground transportation is traveling through a tunnel at high speed. In those conditions waves are propagated, increasing the pressure upstream the object, and so, the drag compared to the open flow case.
Federico Lluesma-Rodríguez +2 more
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Continuous and localized Riesz bases for spaces defined by Muckenhoupt weights [PDF]
, 2015 Let w be an A∞-Muckenhoupt weight in R. Let L2(wdx) denote the space of square integrable real functions with the measure w(x)dx and the weighted scalar product f, g w = R f g wdx.
Aimar, Hugo Alejandro +1 more
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The Manhattan product of digraphs
Electronic Journal of Graph Theory and Applications, 2013 We study the main properties of a new product of bipartite digraphs which we call Manhattan product. This product allows us to understand the subjacent product in the Manhattan street networks and can be used to built other networks with similar good ...
Francesc Comellas +2 more
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Electronic Journal of Qualitative Theory of Differential Equations, 2020 We study the size of the global attractor for a delay differential equation with unimodal feedback. We are interested in extending and complementing a dichotomy result by Liz and Röst, which assumed that the Schwarzian derivative of the nonlinear ...
Daniel Franco +3 more
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Modelagem matemática aplicada a cinética de secagem das cascas de pitomba (Talisia esculenta)
, 2020 O presente trabalho tem como objetivo determinar a composicao centesimal da casca da pitomba, realizar a sua cinetica de secagem em tres diferentes temperaturas de ar de secagem, ajustar modelos matematicos aos dados experimentais e avaliar efeito da ...
Newton Carlos Santos +9 more
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Rocket plume URANS simulation using OpenFOAM
Results in Engineering, 2019 A key aspect in the launch environment of a space vehicle is the generation and propagation of noise, due to its effect in the payload. Obtaining experimental measures is an extremely difficult, so CFD techniques appear as a useful tool to estimate both ...
Mara S. Escarti-Guillem +2 more
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Mathematical Analysis and Numerical Simulation in Magnetic Recording
Mathematical Modelling and Analysis, 2014 The head-tape interaction in magnetic recording is described in the literature by a coupled system of partial differential equations. In this paper we study the limit case of the system which reduces the problem to a second order nonlocal equation on a ...
Ana Isabel Munoz, Jose Ignacio Tello
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The sharp maximal function approach to $L^{p}$ estimates for operators structured on H\"{o}rmander's vector fields [PDF]
, 2015 We consider a nonvariational degenerate elliptic operator structured on a system of left invariant, 1-homogeneous, H\"ormander's vector fields on a Carnot group in $R^{n}$, where the matrix of coefficients is symmetric, uniformly positive on a bounded ...
Bramanti, Marco, Toschi, Marisa
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, 2020 El estudio consiste en modelar una red de distribución de agua potable de la provincia de Coclé, a través de la teoría de grafos, suponiendo un modelo estático o de flujo permanente.
M. Muñoz +2 more
semanticscholar +1 more source