Zobrazeno 1 - 10
of 62
pro vyhledávání: '"N. A. Saeed"'
Autor:
N. A. Saeed, Galal M. Moatimid, Fawzy M. Elsabaa, Yomna Y. Ellabban, S. K. Elagan, Mohamed S. Mohamed
Publikováno v:
IEEE Access, Vol 9, Pp 74836-74854 (2021)
In this work, a nonlinear integral resonant controller is utilized for the first time to suppress the principal parametric excitation of a nonlinear dynamical system. The whole system is modeled as a second-order nonlinear differential equation (i.e.
Externí odkaz:
https://doaj.org/article/e857645ebed1478f8c1edbc903d7058b
Autor:
N. A. Saeed, Emad Mahrous Awwad, Ali Maarouf, Hassan M. H. Farh, Fahd A. Alturki, Jan Awrejcewicz
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
This article aims to explore the oscillatory characteristics of a controlled asymmetric rotor system when subjected to rub and impact forces between the rotor and stator. Four electromagnetic poles are used to control the whirling motion of the rotor
Externí odkaz:
https://doaj.org/article/ebee621cc2234c959928b0e9396471dd
Publikováno v:
Symmetry, Vol 13, Iss 2, p 255 (2021)
The nonlinear vibration control of a nonlinear dynamical system modeled as the well-known Duffing oscillators is investigated within this article. The conventional Positive Position Feedback (PPF) controller is proposed to mitigate the considered sys
Externí odkaz:
https://doaj.org/article/0316f719ac0f431bace912517df87f84
Akademický článek
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Akademický článek
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Autor:
Ernesto Solís-Moya, Carolina Sansaloni, K. A. Laghari, Peter Wenzl, Lourdes Ledesma-Ramírez, Mandeep Randhawa, Mehboob Ali Sial, Satyavir Singh, Himanshi Chaudhary, Ashwani K. Basandrai, Mian Abdur Rehman Arif, Sridhar Bhavani, Daisy Basandrai, Juan Burgueño, Abdulqader Jighly, Navtej Singh Bains, Achala Sharma, Velu Govindan, Neftali Pardo, G. P. Singh, Sukhwinder Singh, Reem Joukhadar, S P Singh, Deepmala Sehgal, N. A. Saeed, Sajid Shokat, Muhammad Imtiaz, Prashant Vikram, Virinder Singh Sohu
Publikováno v:
Nature Food. 2:819-827
The effective utilization of natural variation has become essential in addressing the challenges that climate change and population growth pose to global food security. Currently adopted protracted approaches to introgress exotic alleles into elite c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f90a800c8f8dd4cfc83cf0110058ab69
https://doi.org/10.1038/s43016-021-00380-z
https://doi.org/10.1038/s43016-021-00380-z
Autor:
L. Baker, Buddhini Samaraweera, R. Stonham, Emanuela Pelosi, L. Orchard, Kordo Saeed, N. Ahmad-Saeed, Adhyana I K Mahanama, Eleri Wilson-Davies, Chantelle Monck, A. Dushianthan, S. Friar
Publikováno v:
Infez Med
Real-Time polymerase chain reaction (qPCR) is the gold standard diagnostic method for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Cycle threshold (Ct) is defined as the number of heating and cooling cycles required during
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cfecea2ae91fb91f4177cc94529d966
https://doi.org/10.53854/liim-2903-9
https://doi.org/10.53854/liim-2903-9
Autor:
N. A. Saeed, Olatunji Mumini Omisore, Ronglinag Chen, Talaat Abdelhamid, T. Muthuramalingam, Md. Mahbub Alam, Ammar H. Elsheikh
Publikováno v:
Mathematics and Computers in Simulation. 187:134-154
This paper studies the reconstruction of the spatial-dependent-heat transfer coefficient γ ( x ) and- heat flux q ( x ) , using the Levenberg–Marquardt (L–M) connected with the surrogate functional method and the modified conjugate gradient meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22776ef69ce39f4ba34a16ce7492a047
https://doi.org/10.1016/j.matcom.2021.02.011
https://doi.org/10.1016/j.matcom.2021.02.011
Autor:
Jan Awrejcewicz, Emad Mahrous Awwad, Ali Maarouf, N. A. Saeed, Hassan M. H. Farh, Fahd A. Alturki
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
This article aims to explore the oscillatory characteristics of a controlled asymmetric rotor system when subjected to rub and impact forces between the rotor and stator. Four electromagnetic poles are used to control the whirling motion of the rotor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::394313e5165ebcd053f8afe4a9a5f8d2
https://doi.org/10.1155/2021/1800022
https://doi.org/10.1155/2021/1800022
Publikováno v:
Applied Mathematical Modelling. 93:792-810
This article aimed to investigate the dynamical behaviours of a controlled asymmetric rotating shaft system when the rub-impact forces between the rotor and stator occur. A nonlinear position-velocity controller is proposed to control the system's la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60d851ab634f4ff2f2e47b0a628a8c76
https://doi.org/10.1016/j.apm.2021.01.008
https://doi.org/10.1016/j.apm.2021.01.008