Zobrazeno 1 - 10
of 25
pro vyhledávání: '"A. H. A. Alfedeel"'
Autor:
Abdelbaki Choucha, Djamel Ouchenane, Safa M. Mirgani, Eltigan I. Hassan, A. H. A. Alfedeel, Khaled Zennir
Publikováno v:
Mathematics, Vol 12, Iss 6, p 857 (2024)
In this work, we consider the one-dimensional thermoelastic Bresse system by addressing the aspects of nonlinear damping and distributed delay term acting on the first and the second equations. We prove a stability result without the common assumptio
Externí odkaz:
https://doaj.org/article/e89c09108a1a439bb165d159d3d98b15
Publikováno v:
Axioms, Vol 12, Iss 9, p 833 (2023)
In the present paper, a transmission problem of the Timoshenko beam in the presence of distributed delay is considered. Under appropriate assumptions, we prove the well-posedness by using the semi-group theory. Furthermore, we study the asymptotic be
Externí odkaz:
https://doaj.org/article/72e40e33a6804d3391ea38ad37cb2b00
Publikováno v:
Frontiers in Physics, Vol 10 (2022)
The dynamics of the scalar field and particle in a conformal frame are considered. The conformal Klein-Gordon equation describing the scalar field is transformed into the quantum Telegraph equation in Minkowski space-time. The conformal factor acts l
Externí odkaz:
https://doaj.org/article/9bd0a3f8e0034127a7906c04f8b849ce
Autor:
Değer Sofuoğlu, Rishi Kumar Tiwari, Amare Abebe, Alnadhief H. A. Alfedeel, Eltegani I. Hassan
Publikováno v:
Physics; Volume 4; Issue 4; Pages: 1348-1358
A non-minimally coupled cosmological scenario is considered in the context of f(R,T)=f1(R)+f2(R)f3(T) gravity (with R being the Ricci scalar and T the trace of the energy-momentum tensor) in the background of the flat Friedmann–Robertson–Walker (
Autor:
S. G. Georgiev, A. Boukarou, K. Bouhali, Kh. Zennir, H. M. Elkhair, E. I. Hassan, A. H. A. Alfedeel, A. M. Alarfaj
Publikováno v:
Symmetry; Volume 15; Issue 6; Pages: 1159
In this article, we investigate the generalized Kawahara–KdV system. A new topological approach is applied to prove the existence of at least one classical solution and at least two non-negative classical solutions. The arguments are based upon rec
Autor:
Alnadhief H. A. Alfedeel
Publikováno v:
Universe; Volume 9; Issue 6; Pages: 255
Using an open thermodynamic systems theory, the effect of particle creation on the evolution and dynamics of the standard cosmological FLRW model in a higher-dimensional spacetime with functionally dependent cosmological and gravitational constants
Autor:
Amare Abebe, Alnadhief H. A. Alfedeel, Değer Sofuoğlu, Eltegani I. Hassan, Rishi Kumar Tiwari
Publikováno v:
Universe
Volume 9
Issue 2
Pages: 61
Volume 9
Issue 2
Pages: 61
As a follow-up of a recent article in which we investigated the cosmological background expansion history of the universe in Bianchi type-V cosmological models with bulk viscous fluid and evolving cosmological Λ and Newtonian G parameters, we study
Autor:
Alnadhief H. A. Alfedeel, Amare Abebe
Publikováno v:
Open Astronomy. 31:198-204
In this work, cosmological solutions based on the time-dependent cosmological ( Λ \Lambda ) and Newtonian ( G G ) running “constants” in the Bianchi type-I spacetime are investigated vis-à-vis known cosmological data. The observationally known
Autor:
Rishi Kumar Tiwari, Alnadhief H. A. Alfedeel, Değer Sofuoğlu, Amare Abebe, Eltegani I. Hassan, B. K. Shukla
Publikováno v:
Frontiers in Astronomy and Space Sciences. 9
In this paper, we investigate Bianchi type − V cosmological models with bulk viscous fluid and time varying cosmological Λ and Newtonian G parameters. The Einstein’s field equations have been transformed into a coupling non-linear, first-order d
Autor:
Mohamed Karek, Sadok Otmani, Keltoum Bouhali, Khaled Zennir, Hatim M. Elkhair, Eltegani I. Hassan, Alnadhief H. A. Alfedeel, Almonther Alarfaj
Publikováno v:
Axioms; Volume 12; Issue 5; Pages: 444
This article is devoted to a study of the question of existence (in time) of weak solutions and the derivation of qualitative properties of such solutions for the nonlinear viscoelastic wave equation with variable exponents and minor damping terms. B