Výsledky vyhledávání - "Alexandru Bobe"

Moore–Gibson–Thompson thermoelasticity in the context of double porous materials

Publikováno v: Continuum Mechanics and Thermodynamics. 33:2243-2252

The present study approaches the theory of Moore–Gibson–Thompson thermoelasticity in the context of the materials with double porosity structure. The main results of the present study are based on a reciprocity theorem for the thermoelastic mater

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14ac0180b8229a81a493135bb511253f
https://doi.org/10.1007/s00161-021-01025-z

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Weak solution of longitudinal waves in carbon nanotubes

Autor: Adrian Eracle Nicolescu, Alexandru Bobe

Publikováno v: Continuum Mechanics and Thermodynamics. 33:2065-2073

This paper studies weak solutions of the axial oscillations of the carbon nanotube modeled as an elastic nanobeam surrounded by an elastic medium. The model used combines Eringen’s theory of non-local elasticity and the equations of axial oscillati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d5dad71bfb3c35488528cadae0e1e60
https://doi.org/10.1007/s00161-021-01001-7

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Weaker hypotheses for the general projection algorithm with corrections

Autor: Alexandru Bobe, Aurelian Nicola, Constantin Popa

Publikováno v: Analele Universitatii "Ovidius" Constanta - Seria Matematica. 23:9-16

In an earlier paper [J. of Appl. Math. and Informatics, 29(3-4)(2011), 697-712] we proposed a general projection-type algorithm with corrections and proved its convergence under a set of special assumptions. In this paper we prove convergence of this

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d8609327709c92f812b22e9fd1d1b7c
https://doi.org/10.1515/auom-2015-0043

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On the non-generic Tzitzeica-Johnson's Configuration

Autor: Serban Barcanescu, Alexandru Bobe, Wladimir G. Boskoff

Publikováno v: Analele Universitatii "Ovidius" Constanta - Seria Matematica. 20:21-26

Working in the context of Hilbert's axiomatic system, we prove that the Tzitzeica-Johnson configuration has sense in neutral geometry. The elements of a Tzitzeica-Johnson configuration allow us to analyse the Euclidean or the non-Euclidean character

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c89a3fc622cfda1ae9638fca8226144f
https://doi.org/10.2478/v10309-012-0036-1

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Tzitzeica-Type centro-affine invariants in Minkowski spaces

Autor: Wladimir G. Boskoff, Alexandru Bobe, Marian G. Ciuca

Publikováno v: Analele Universitatii "Ovidius" Constanta - Seria Matematica. 20:27-34

In this article we introduce three centro-affine invariant functions in Minkowski spaces. Tzitzeica curves and Tzitzeica surfaces may be defined in this new context. Our main results allow us to understand the connections between Tzitzeica curves and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac7fdf0e93de9aa01e7704c65f3567f1
https://doi.org/10.2478/v10309-012-0037-0

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Gheorghe Ţiţeica and the origins of affine differential geometry

Autor: Alfonso F. Agnew, Wladimir G. Boskoff, Alexandru Bobe, Bogdan D. Suceavă

Publikováno v: Historia Mathematica. 36:161-170

We describe the historical and ideological context that brought to the fore the study of a centro-affine invariant that subsequently received much attention. The invariant was introduced by Ţiţeica in 1907, and this discovery has been viewed by man

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80e940bc6a32edffd66e23178945245f
https://doi.org/10.1016/j.hm.2008.09.001

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