Zobrazeno 1 - 10 of 16 pro vyhledávání: '"H. I. Ahmed"'
1
Akademický článek
Effects of steel fibers and carbon nanotubes on the flexural behavior of hybrid GFRP/steel reinforced concrete beams
Autor: Amany Salman, Ahmed Hassan, H. I. Ahmed
Publikováno v: Beni-Suef University Journal of Basic and Applied Sciences, Vol 13, Iss 1, Pp 1-18 (2024)
Abstract Background Glass fiber-reinforced polymer (GFRP) bars offer a superior alternative to steel bars in concrete reinforcement but are associated with wider cracks and higher deformation rates. This study introduces a novel approach by combining
Externí odkaz: https://doaj.org/article/41ed38c6c96a42f695d15a896a47315e
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2
Akademický článek
Stochastic modeling of a mosquito-borne disease
Autor: Peter J. Witbooi, Gbenga J. Abiodun, Garth J. van Schalkwyk, Ibrahim H. I. Ahmed
Publikováno v: Advances in Difference Equations, Vol 2020, Iss 1, Pp 1-15 (2020)
Abstract We present and analyze a stochastic differential equation (SDE) model for the population dynamics of a mosquito-borne infectious disease. We prove the solutions to be almost surely positive and global. We introduce a numerical invariant R ${
Externí odkaz: https://doaj.org/article/9d517339d7fe434391dac3071376a4aa
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6
Stochastic modeling of a mosquito-borne disease
Autor: Gbenga J. Abiodun, Ibrahim H. I. Ahmed, Peter J. Witbooi, Garth J. van Schalkwyk
Publikováno v: Advances in Difference Equations, Vol 2020, Iss 1, Pp 1-15 (2020)
We present and analyze a stochastic differential equation (SDE) model for the population dynamics of a mosquito-borne infectious disease. We prove the solutions to be almost surely positive and global. We introduce a numerical invariant ${\mathcal{R}
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7baad7bf16688645311b6d9c227db695
http://link.springer.com/article/10.1186/s13662-020-02803-w
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7
A population model for the 2017/18 listeriosis outbreak in South Africa
Autor: Charlene W.J. Africa, Ibrahim H. I. Ahmed, Alan Christoffels, Peter J. Witbooi
Publikováno v: PLoS ONE, Vol 15, Iss 3, p e0229901 (2020)
PLoS ONE
We introduce a compartmental model of ordinary differential equations for the population dynamics of listeriosis, and we derive a model for analysing a listeriosis outbreak. The model explicitly accommodates neonatal infections. Similarly as is commo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe1e662b44ee2c43e858a6b0e090ba1c
https://doaj.org/article/bdd6e4f491ab4828a07da7fd4310d83a
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8
A stochastic population model of cholera disease
Autor: Marshall B. Ongansie, Peter J. Witbooi, Kazeem Oare Okosun, Ibrahim H. I. Ahmed, Grant E. Muller
Publikováno v: Discrete & Continuous Dynamical Systems - S. 15:441
A cholera population model with stochastic transmission and stochasticity on the environmental reservoir of the cholera bacteria is presented. It is shown that solutions are well-behaved. In comparison with the underlying deterministic model, the sto
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39714d4518c95bd3e107275b014537da
https://doi.org/10.3934/dcdss.2021116
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9
Akademický článek
Modeling the Dynamics of an Epidemic under Vaccination in Two Interacting Populations
Autor: Ibrahim H. I. Ahmed, Peter J. Witbooi, Kailash Patidar
Publikováno v: Journal of Applied Mathematics, Vol 2012 (2012)
We present a model for an SIR epidemic in a population consisting of two components—locals and migrants. We identify three equilibrium points and we analyse the stability of the disease free equilibrium. Then we apply optimal control theory to find
Externí odkaz: https://doaj.org/article/8f815d315af147ce9fbac94d875089b7
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10
Prediction of human-Bacillus anthracis protein–protein interactions using multi-layer neural network
Autor: Ibrahim H. I. Ahmed, Alan Christoffels, Peter J. Witbooi
Publikováno v: Bioinformatics
Motivation Triplet amino acids have successfully been included in feature selection to predict human-HPV protein-protein interactions (PPI). The utility of supervised learning methods is curtailed due to experimental data not being available in suffi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a26f646920aa592f7c6ce7f74770b9da
https://doi.org/10.1093/bioinformatics/bty504
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