Results 1 to 10 of about 442,060 (253)
Spectral Method in Epidemic Time Series: Application to COVID-19 Pandemic [PDF]
Biology, 2022 Background: The age of infection plays an important role in assessing an individual’s daily level of contagiousness, quantified by the daily reproduction number.
Jacques Demongeot, Pierre Magal
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The Influence of Bimodal Heterogeneity on Viscous Fingering of a Miscible Interface in Porous Media [PDF]
Journal of Chemical and Petroleum Engineering, 2021 The flow regimes and the dynamics of the front in miscible displacements are controlled by the interactions between the mechanisms of instability involved in such processes.
Mozhdeh Sajjadi
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ESTIMATION OF SEDIMENTARY THICKNESS FOR HYDROCARBON POTENTIAL OVER PART OF ADAMAWA TROUGH, NE NIGERIA USING MAGNETIC METHOD [PDF]
Earth Sciences Pakistan, 2021 This study presents the results of the analysis and interpretation of aeromagnetic data over part of Adamawa trough with the aim of investigating the hydrocarbon potential of the study area.
Ajala S.A +5 more
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Fractal and Fractional, 2021 Herein, we developed and analyzed a new fractal–fractional (FF) operational matrix for orthonormal normalized ultraspherical polynomials. We used this matrix to handle the FF Riccati differential equation with the new generalized Caputo FF derivative ...
Youssri Hassan Youssri
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Applied Sciences, 2021 It is well known that temperature is a factor that significantly influences the accuracy of machine tools. Compensation enables machine errors to be reduced, even for a moderately accurate machine tool.
Vladimir Alexandrovich Koval’ +2 more
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SpecSolve: Spectral Methods for Spectral Measures
, 2022 Self-adjoint operators on infinite-dimensional spaces with continuous spectra are abundant but do not possess a basis of eigenfunctions. Rather, diagonalization is achieved through spectral measures. The SpecSolve package [SIAM Rev., 63(3) (2021), pp. 489--524] computes spectral measures of general (self-adjoint) differential and integral operators by ...
Matthew J. Colbrook, Andrew Horning
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Spectral method on quadrilaterals [PDF]
Mathematics of Computation, 2010 In this paper, we investigate the spectral method on quadrilaterals. We introduce an orthogonal family of functions induced by Legendre polynomials, and establish some results on the corresponding orthogonal approximation. These results play important roles in the spectral method for partial differential equations defined on quadrilaterals. As examples
Ben-yu Guo, Hong-Li Jia
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Computer Sciences & Mathematics Forum, 2023 The three-dimensional problem of the modelling of elastic wave propagation in a multi-layered acoustic metamaterial, a periodic elastic composite with periodic arrays of interface cracks or planar voids of arbitrary shape, is considered.
Mikhail V. Golub +4 more
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An Efficient Spectral Method-based Algorithm for Solving a High-dimensional Chaotic Lorenz System [PDF]
Journal of Applied and Computational Mechanics, 2021 In this paper, we implement the multidomain spectral relaxation method to numerically study high dimensional chaos by considering the nine-dimensional Lorenz system.
Phumlani Dlamini, Simphiwe Simelane
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Fractal and Fractional, 2023 Approximate solutions for a family of nonlinear fractional-order differential equations are introduced in this work. The fractional-order operator of the derivative are provided in the Caputo sense.
Adel Abd Elaziz El-Sayed +2 more
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