Zobrazeno 1 - 10
of 55
pro vyhledávání: '"I. K. Youssef"'
Autor:
I. K. Youssef, M. H. M. Hassan
Publikováno v:
Applied Sciences, Vol 12, Iss 24, p 12639 (2022)
A local performance of the SIR model on actual data is introduced. A good approximation of the SIR model parameters in Saudi Arabia during a period of 275 days (the first of April 2020 to the end of December 2020) is determined. The parameters are es
Externí odkaz:
https://doaj.org/article/80f04c40dc544b24854fa87c1b48170b
Publikováno v:
International Journal of Advances in Applied Mathematics and Mechanics, Vol 2, Iss 3, Pp 78-86 (2015)
Externí odkaz:
https://doaj.org/article/b37ab765b02c4189acf55f67cccccda7
Autor:
Meligy, Sh. A.1 shaban.mahmoud@feng.bu.edu.eg, Youssef, I. K.2,3 kaoud22@sci.asu.edu.eg
Publikováno v:
International Journal of Mathematics & Computer Science. 2022, Vol. 17 Issue 3, p1193-1199. 7p.
Publikováno v:
Soft Computing. 23:9647-9655
Reduction in storage and number of operations are considered through avoiding the representation of zeros in storage as well as in the calculations. The importance of this approach has its effect in large problems that appear in numerical treatments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92ea880a16524a9a0021ffe0fc50959c
https://doi.org/10.1007/s00500-018-3529-7
https://doi.org/10.1007/s00500-018-3529-7
Autor:
M. H. El Dewaik, I. K. Youssef
Publikováno v:
Applied Mathematics and Nonlinear Sciences. 2:271-284
The algebraic structure of the linear system appears in solving fractional order Poisson’s equation by Haar wavelet collocation approach is considered. The fractional derivative is described in the Caputo sense. Comparison with the classical intege
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbbf83eea79a55105d91a49c94a6fa24
https://doi.org/10.21042/amns.2017.1.00023
https://doi.org/10.21042/amns.2017.1.00023
Publikováno v:
Journal of Computational and Applied Mathematics. 384:113157
In this paper, we study and present a spectral numerical technique for solving a general class of multi-order fractional pantograph equations with varying coefficients and systems of pantograph equations. In this study, the spectral Galerkin approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1b0054e1356dfff45cf7d89984bc26b
https://doi.org/10.1016/j.cam.2020.113157
https://doi.org/10.1016/j.cam.2020.113157
Publikováno v:
International Journal of Applied and Computational Mathematics. 3:333-345
In this paper, a spectral scheme based on shifted second kind Chebyshev wavelets collocation method (S2CWCM) is introduced and used for solving systems of integro-differential equations. The main idea for obtaining spectral numerical solutions of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b11af8fb2dc92a1071dc5ffa463bac2
https://doi.org/10.1007/s40819-016-0157-8
https://doi.org/10.1007/s40819-016-0157-8
Autor:
I. K. Youssef, Adel Rashed A. Ali
Publikováno v:
Journal of Physics: Conference Series. 1591:012085
The Caputo definition of fractional derivatives introduces solution to the difficulties appears in the numerical treatment of differential equations due its consistency in differentiating constant functions. In the same time the memory and hereditary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f533f836f735e924c52b8cc941ebabe
https://doi.org/10.1088/1742-6596/1591/1/012085
https://doi.org/10.1088/1742-6596/1591/1/012085
Autor:
Azza A. Taha, I. K. Youssef
Publikováno v:
Applied Mathematics and Computation. 219:4601-4613
New forms of the modified successive overrelaxation (MSOR); MKSOR, MKSOR1 and MKSOR2 are introduced. These forms depend on the updated successive overrelaxation method (KSOR) and the combination of the SOR and the KSOR methods. We present analysis of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c441ae432c467a7504de1705d1ace25f
https://doi.org/10.1016/j.amc.2012.10.071
https://doi.org/10.1016/j.amc.2012.10.071
Autor:
A. I. Alzaki, I. K. Youssef
Publikováno v:
Journal of Mathematics and Statistics. 8:461-470
We consider the problem of minimizing the e2-norm of the KSOR operator when solving a linear systems of the form AX = b where, A = I +B (TJ = -B, is the Jacobi iteration matrix), B is skew symmetric matrix. Based on the eigenvalue functional relation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ce36a14a77e6afd6516a2f872cfb523
https://doi.org/10.3844/jmssp.2012.461.470
https://doi.org/10.3844/jmssp.2012.461.470