Results 11 to 20 of about 479,061 (253)
Spectral methods in the presence of discontinuities [PDF]
Journal of Computational Physics, 2019 20 pages, 18 ...
Joanna Piotrowska +2 more
openaire +3 more sources
Synthesis of 3-phenyl-4-styryl and 3-phenyl-4-hydroxy coumarins [PDF]
مجلة التربية والعلم, 2008 In this paper the synthesis of substituted 3-phenyl-4-styryl and 3-phenyl-4-hydroxy coumarins is reported. The substituted benzaldehydes were treated with 2-hydroxy acetophenone to give the corresponding chalcone, the hydroxy chalcone then reacted with ...
Shaima Ismaeel
doaj +1 more source
Mathematics, 2022 In this paper, we study numerically the effect of rotation within a sample of water in a cylindrical container subject to rotation which is heated with a constant temperature at the bottom and lateral wall. We analyze the temporal behavior of temperature
María Cruz Navarro +2 more
doaj +1 more source
Directed network Laplacians and random graph models
Royal Society Open Science, 2021 We consider spectral methods that uncover hidden structures in directed networks. We establish and exploit connections between node reordering via (a) minimizing an objective function and (b) maximizing the likelihood of a random graph model. We focus on
Xue Gong +2 more
doaj +1 more source
A Sparse Spectral Method on Triangles [PDF]
SIAM Journal on Scientific Computing, 2019 In this paper, we demonstrate that many of the computational tools for univariate orthogonal polynomials have analogues for a family of bivariate orthogonal polynomials on the triangle, including Clenshaw's algorithm and sparse differentiation operators.
Sheehan Olver +2 more
openaire +4 more sources
Knowledge Transfer Between Artificial Intelligence Systems
Frontiers in Neurorobotics, 2018 We consider the fundamental question: how a legacy “student” Artificial Intelligent (AI) system could learn from a legacy “teacher” AI system or a human expert without re-training and, most importantly, without requiring significant computational ...
Ivan Y. Tyukin +6 more
doaj +1 more source
A Chebyshev-Gauss collocation method for the numerical solution of ordinary differential equations [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2017 This paper presents a Chebyshev-Gauss collocation method to determine an approximate solution to the initial value problems of ordinary differential equations.
Kanyakorn Cheuprasert, Nairat Kanyamee
doaj +1 more source
On the Compressive Spectral Method
Multiscale Modeling & Simulation, 2014 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alan Mackey +2 more
openaire +3 more sources
A SPECTRAL METHOD FOR DECONVOLVING A DENSITY [PDF]
Econometric Theory, 2010 We propose a new estimator for the density of a random variable observed with an additive measurement error. This estimator is based on the spectral decomposition of the convolution operator, which is compact for an appropriate choice of reference spaces.
Carrasco, Marine, Florens, Jean-Pierre
openaire +2 more sources
Energies, 2022 Long electromagnetic transients occur in electrical systems because of switching and impulse actions As a result, the simulation time of such processes can be long, which is undesirable.
Sergii Tykhovod, Ihor Orlovskyi
doaj +1 more source