Zobrazeno 1 - 10
of 46
pro vyhledávání: '"El Mostafa Kalmoun"'
Publikováno v:
Mathematics, Vol 12, Iss 11, p 1630 (2024)
In the original paper [...]
Externí odkaz:
https://doaj.org/article/54022d49cb2a4399b47c2ab2d89e0bd2
Autor:
Mohammadmehdi Roshani, Giang T.T. Phan, Peshawa Jammal Muhammad Ali, Gholam Hossein Roshani, Robert Hanus, Trung Duong, Enrico Corniani, Ehsan Nazemi, El Mostafa Kalmoun
Publikováno v:
Alexandria Engineering Journal, Vol 60, Iss 1, Pp 1955-1966 (2021)
The main objective of the present research is to combine the effect of scale thickness on the flow pattern and characteristics of two-phase flow that is used in oil industry. In this regard, an intelligent nondestructive technique based on combinatio
Externí odkaz:
https://doaj.org/article/8f7546ccaacb4353b500ab83f94c0b34
Autor:
El Mostafa Kalmoun, Fatimah Allami
Publikováno v:
AIMS Mathematics, Vol 6, Iss 3, Pp 2764-2777 (2021)
We study a unified form of Tikhonov regularization for ill-posed problems with a general data similarity term. We discuss sufficient conditions on this generalized Tikhonov functional that guarantee existence and stability of solutions. Furthermore,
Externí odkaz:
https://doaj.org/article/97ce2ad0fd3243db841d883ccaf98079
Publikováno v:
Croatian Operational Research Review, Vol 11, Iss 1, Pp 1-10 (2020)
We are interested in local quasi efficient solutions for nonsmooth vector optimization problems under new generalized approximate invexity assumptions. We formulate necessary and sufficient optimality conditions based on Stampacchia and Minty types o
Externí odkaz:
https://doaj.org/article/631cf246e26f4107a651de78f2e0dda4
Publikováno v:
Mathematics, Vol 10, Iss 22, p 4341 (2022)
We take up a nonsmooth multiobjective optimization problem with tangentially convex objective and constraint functions. In employing a suitable constraint qualification, we formulate both necessary and sufficient optimality conditions for (local) qua
Externí odkaz:
https://doaj.org/article/d063da8776aa491a827a00a7d3b2999e
Publikováno v:
Mathematics, Vol 10, Iss 4, p 612 (2022)
The main required organ of the biological system is the Central Nervous System (CNS), which can influence the other basic organs in the human body. The basic elements of this important organ are neurons, synapses, and glias (such as astrocytes, which
Externí odkaz:
https://doaj.org/article/ad8ff0deee054f869803450b09063a95
Autor:
Mohammed Alamoudi, Mohammad Amir Sattari, Mohammed Balubaid, Ehsan Eftekhari-Zadeh, Ehsan Nazemi, Osman Taylan, El Mostafa Kalmoun
Publikováno v:
Symmetry, Vol 13, Iss 7, p 1198 (2021)
Scale deposits can reduce equipment efficiency in the oil and petrochemical industry. The gamma attenuation technique can be used as a non-invasive effective tool for detecting scale deposits in petroleum pipelines. The goal of this study is to propo
Externí odkaz:
https://doaj.org/article/09d82b16a0bc4119b56d99872e63a17f
Publikováno v:
Mathematics, Vol 9, Iss 13, p 1460 (2021)
To the best knowledge of the authors, in former studies in the field of measuring volume fraction of gas, oil, and water components in a three-phase flow using gamma radiation technique, the existence of a scale layer has not been considered. The for
Externí odkaz:
https://doaj.org/article/5cb1ae088f9246b39f43f7a2bb4ad353
Autor:
Gholam Hossein Roshani, Peshawa Jammal Muhammad Ali, Shivan Mohammed, Robert Hanus, Lokman Abdulkareem, Adnan Alhathal Alanezi, Ehsan Nazemi, Ehsan Eftekhari-Zadeh, El Mostafa Kalmoun
Publikováno v:
Symmetry, Vol 13, Iss 4, p 613 (2021)
In this paper, the feasibility of using an X-ray tube instead of radioisotope sources for measuring volume fractions of gas, oil, and water in two typical flow regimes of three-phase flows, namely, annular and stratified, is evaluated. This study’s
Externí odkaz:
https://doaj.org/article/40a06619e31347d1aebeb9cb62a8b7c0
Publikováno v:
Symmetry, Vol 12, Iss 7, p 1175 (2020)
We study the motion of a single point vortex in simply- and multiply-connected polygonal domains. In the case of multiply-connected domains, the polygonal obstacles can be viewed as the cross-sections of 3D polygonal cylinders. First, we utilize conf
Externí odkaz:
https://doaj.org/article/e7e69eb6288f4f11a2c6f34d46ad61b1