Zobrazeno 1 - 10
of 262
pro vyhledávání: '"WOJCIECH SUMELKA"'
Autor:
Junjie Zhu, Feroz Khan, Sami Ullah Khan, Wojciech Sumelka, Farman U. Khan, Salman A. AlQahtani
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract This study presents a computational investigation of a stochastic Zika virus along with optimal control model using the Legendre spectral collocation method (LSCM). By accumulation of stochasticity into the model through the proposed stochas
Externí odkaz:
https://doaj.org/article/3bf128f24d43449fa5511d40e171f656
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract In recent years, there has been a growing interest in incorporating fractional calculus into stochastic delay systems due to its ability to model complex phenomena with uncertainties and memory effects. The fractional stochastic delay differ
Externí odkaz:
https://doaj.org/article/ef5a675be4584516b5c1dff569bea666
Autor:
Muhammad Atif Sarwar, Muhammad Noor-ul-Amin, Imad Khan, Emad A. A. Ismail, Wojciech Sumelka, Muhammad Nabi
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023)
Abstract In recent times, there has been a growing focus among researchers on memory-based control charts. The Exponentially Weighted Moving Average (EWMA) and Cumulative Sum (CUSUM) charts and the adaptive control charting approaches got the attenti
Externí odkaz:
https://doaj.org/article/aefa0592bf7f44d2aba47878db0c1f24
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-16 (2023)
Abstract Control charts, including exponentially moving average (EWMA) , are valuable for efficiently detecting small to moderate shifts. This study introduces a Bayesian EWMA control chart that employs ranked set sampling (RSS) with known prior info
Externí odkaz:
https://doaj.org/article/30c9df96f4604cedba74e4b03e314582
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-14 (2023)
Abstract The memory-type control charts, such as cumulative sum (CUSUM) and exponentially weighted moving average control chart, are more desirable for detecting a small or moderate shift in the production process of a location parameter. In this art
Externí odkaz:
https://doaj.org/article/fb90a385026248c69062fa683c8f6685
Publikováno v:
Applied Sciences, Vol 14, Iss 7, p 3010 (2024)
In this study, the behavior of double-walled carbon nanotubes (DWCNTs) used as mass sensors is explored under various boundary conditions; particular attention is paid to the crucial topic of resonant nanomechanical mass sensors. In the presented app
Externí odkaz:
https://doaj.org/article/24b8c4439cf247cb8b90384f45a3722d
Publikováno v:
Alexandria Engineering Journal, Vol 61, Iss 7, Pp 5083-5095 (2022)
The coronavirus infectious disease (COVID-19) is a novel respiratory disease reported in 2019 in China. The infection is very destructive to human lives and caused millions of deaths. Various approaches have been made recently to understand the compl
Externí odkaz:
https://doaj.org/article/6ce1cb0f32c14ec7b529861c74a82508
Autor:
Piotr W. Sielicki, Mark G. Stewart, Tomasz Gajewski, Michał Malendowski, Piotr Peksa, Hasan Al-Rifaie, Robert Studziński, Wojciech Sumelka
Publikováno v:
Defence Technology, Vol 17, Iss 6, Pp 1852-1863 (2021)
Person-borne improvised explosive devices (PBIEDs) are often used in terrorist attacks in Western countries. This study aims to predict the trajectories of PBIED fragments and the subsequent safety risks for people exposed to this hazard. An explosiv
Externí odkaz:
https://doaj.org/article/c467bc3f526641699459aaef14cd773e
Publikováno v:
Symmetry, Vol 15, Iss 9, p 1753 (2023)
This paper proposes an approximation algorithm based on the Legendre and Chebyshev artificial neural network to explore the approximate solution of fractional Lienard and Duffing equations with a Caputo fractional derivative. These equations show the
Externí odkaz:
https://doaj.org/article/2af5447bd7964f62946fd8e5ef743a2c
Publikováno v:
Symmetry, Vol 15, Iss 8, p 1614 (2023)
This article explores matter collineations (MCs) of static plane-symmetric spacetimes, considering the stress–energy tensor in its contravariant and mixed forms. We solve the MC equations in two cases: when the energy–momentum tensor is nondegene
Externí odkaz:
https://doaj.org/article/012a7128cf954125bc5988de76c9d271