Zobrazeno 1 - 10
of 2 610
pro vyhledávání: '"M, Sheikh"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-27 (2024)
Abstract We reconsider formulating D dimensional gauge theories, with the focus on the case of gravity theories, in spacetimes with boundaries. We extend covariant phase space formalism to the cases in which boundaries are allowed to fluctuate. We an
Externí odkaz:
https://doaj.org/article/980bf6c444b442ab865b35e4270886ac
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-36 (2024)
Abstract We study 4 dimensional (4d) gravitational waves (GWs) with compact wavefronts, generalizing Robinson-Trautman (RT) solutions in Einstein gravity with an arbitrary cosmological constant. We construct the most general solution of the GWs in th
Externí odkaz:
https://doaj.org/article/afc78119448f4ac99dc3abec53012b10
Autor:
Sameer Badri Al-Mhanna, Alexios Batrakoulis, Abdulrahman M. Sheikh, Abdulaziz A. Aldayel, Abdulwali Sabo, Mahaneem Mohamed, Hafeez Abiola Afolabi, Abdirizak Yusuf Ahmed, Sahra Isse Mohamed, Mehmet Gülü, Wan Syaheedah Wan Ghazali
Publikováno v:
AIMS Public Health, Vol 11, Iss 2, Pp 459-476 (2024)
Background Due to the worldwide reach of the COVID-19 pandemic, authorities across the globe deemed it essential to enforce exceptional containment measures. Maintaining physical activity (PA) during this time was only feasible through engaging in ac
Externí odkaz:
https://doaj.org/article/48fcfc8eae35444b8fde70eb76e27b49
Publikováno v:
Modern Electronic Materials, Vol 10, Iss 1, Pp 37-49 (2024)
This paper presents the characterisation of the three distinct materials considered to be used as a resistance-type strained-based sensor on a wearable device. Other performance parameters besides the usual linearity, sensitivity, working range, and
Externí odkaz:
https://doaj.org/article/2f071a178188436bae4a771578dd82d2
Autor:
Khalid H. Alharbi, Jagadeesh Babu Kamili, Anveshkumar Nella, Rabah W. Aldhaheri, Muntasir M. Sheikh
Publikováno v:
Elektronika ir Elektrotechnika, Vol 30, Iss 2, Pp 38-45 (2024)
This work deals with the design and development of a conformal series-fed antenna structure operating at the 60 GHz frequency. The proposed antenna operates from 57 GHz to 62 GHz with good return loss and radiation characteristics for 6G and beyond a
Externí odkaz:
https://doaj.org/article/d611a0952ba74aa293538ed15ee9e476
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 3, Pp 1-14 (2024)
Abstract Within the Friedmann–Lemaître–Robertson–Walker (FLRW) framework, the Hubble constant $$H_0$$ H 0 is an integration constant. Thus, consistency of the model demands observational constancy of $$H_0$$ H 0 . We demonstrate redshift evolu
Externí odkaz:
https://doaj.org/article/eb32e53d14414d398c6614e650fec847
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-36 (2024)
Abstract We study pure D dimensional Einstein gravity in spacetimes with a generic null boundary. We focus on the symplectic form of the solution phase space which comprises a 2D dimensional boundary part and a 2(D(D − 3)/2 + 1) dimensional bulk pa
Externí odkaz:
https://doaj.org/article/8fdd9de4ce234235817aed6dd81c84c5
Autor:
Joonhyuk Lee, Seetharam C. Chadalavada, Anish Ghodadra, Arafat Ali, Elsa M. Arribas, Leonid Chepelev, Ciprian N. Ionita, Prashanth Ravi, Justin R. Ryan, Lumarie Santiago, Nicole Wake, Adnan M. Sheikh, Frank J. Rybicki, David H. Ballard
Publikováno v:
3D Printing in Medicine, Vol 9, Iss 1, Pp 1-7 (2023)
Abstract Background Medical three-dimensional (3D) printing has demonstrated utility and value in anatomic models for vascular conditions. A writing group composed of the Radiological Society of North America (RSNA) Special Interest Group on 3D Print
Externí odkaz:
https://doaj.org/article/a5cc4a1bdd7c409eb0edc9f054bef0e6
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 9, Pp 1-6 (2023)
Abstract We show that the Friedmann–Lemaître–Robertson–Walker (FLRW) framework has an instability towards the growth of fluid flow anisotropies, even if the Universe is accelerating. This flow (tilt) instability in the matter sector is invisib
Externí odkaz:
https://doaj.org/article/862c628328bf4629ac8420ffdca6fce8
Publikováno v:
Universe, Vol 10, Iss 8, p 305 (2024)
ΛCDM tensions are by definition model-dependent; one sees anomalies through the prism of ΛCDM. Thus, progress towards tension resolution necessitates checking the consistency of the ΛCDM model to localise missing physics either in redshift or scal
Externí odkaz:
https://doaj.org/article/ef2b0fdb8f62471d8d52203bf42031da