Results 171 to 180 of about 1,434,735 (258)

Breaking Barriers in High‐Order Spectral Methods: The Intrinsic Matrix Approach

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 5, 15 March 2026.
ABSTRACT This paper introduces a unified framework in Hilbert spaces for applying high‐order differential operators in bounded domains using Chebyshev, Legendre, and Fourier spectral methods. By exploiting the banded structure of differentiation matrices and embedding boundary conditions directly into the operator through a scaling law relating ...
Osvaldo Guimarães, José R. C. Piqueira
wiley   +1 more source

Beta-blockers for Hypertension: To Be or Not to Be a First-line Drug? [PDF]

open access: yesArq Bras Cardiol
Barreto-Filho JAS   +3 more
europepmc   +1 more source

Developing strategies and quality control in the Ageing and Brain Working Study in ELSA-Brasil. [PDF]

open access: yesRev Saude Publica
Quidim AVL   +16 more
europepmc   +1 more source

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