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Wyszukujesz frazę "stability number" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Stability of Micropolar Fluid in a Porous Medium Provoked by Heat Function and Radiation
Autorzy:
Nwabuzor, P. O.
Ngiangia, A. T.
Chukwuocha, E. O.
Powiązania:
https://bibliotekanauki.pl/articles/1076558.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Electroconductivity
Heat Function
Micropolar Fluid
Rayleigh
Stability
Wave Number
Opis:
The stability of micropolar fluid flow in a channel under the influence of heat function, magnetic field and radiation was investigated. Using the similarity solution and non-dimensionalizing, the governing partial differential equations (PDEs) where transformed to a set of non-linear differential equations (ODEs). We therefore perturbed the system and determined the stability of the system. Wolfram 9 software (Mathematica) was used to analyze the various stability effect of the material parameters on the fluid flow. The graphical results reflects the expected physical behavior of the flow configuration under consideration. The study reveals that the Prandtl (Pr), wave (a), Radiation (R) and heat function parameters at a certain critical value of the wave number hastens the onset of stability. While the Electroconductivity (σ), Magnetic field (M), Micropolar (K) and Microrotational (λ) parameters delays the onset of stability. The result are in agreement with the works of other literature sited.
Źródło:
World Scientific News; 2019, 115; 174-192
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bifurcation and Stability Analysis of the Dynamics of Gonorrhea Disease in the Population
Autorzy:
Adediipo, Adeola D.
Akanni, John O.
Shangodare, Olasunkanmi M.
Powiązania:
https://bibliotekanauki.pl/articles/1030149.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Basic Reproduction Number
Bifurcation analysis
Gonorrhea disease
Lyapunov function
Sensitivity analysis
Stability Analysis
Opis:
The model was governed by a system of ordinary differential equations; the population into susceptible individuals (S), Exposed individuals (E), infected individuals (I) and Recovered individuals (Q). Theory of positivity and boundedness was used to investigate the well-posedness of the model. Equilibrium solutions were investigated analytically. The basic reproduction number (R0) were calculated using the next generation operator method. Bifurcation analysis and global stability of the model were carried out using centre manifold theory and Lyapunov functions respectively. The effects of parameters such as efficacy of Condom (κ), Effective Contact Rate (β), Compliance of Condom (θ), Progression Rate (ρ) and Treatment Rate (α) on R0 were explored through sensitivity analysis. The possibility of mitigating the spread of gonorrhea in the population has been studied. It can be concluded that parameters representing efficacy of Condom, Effective Contact Rate, Compliance of Condom, Progression Rate and Treatment Rate are significant in reducing the burden of gonorrhea disease in the population.
Źródło:
World Scientific News; 2020, 143; 139-154
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical Modeling of Control Strategies for Visceral leishmaniasis
Autorzy:
Onyekwelu, Onuorah Martins
Baker, Nasasira
Powiązania:
https://bibliotekanauki.pl/articles/1839477.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Stability
equilibrium
parameterization
endemic
basic reproductive number
simulation
visceral Leishmaniasis
Visceral leishmaniasis
kala-azar
Cutaneous leishmanisis
Opis:
In this paper, a deterministic mathematical model for the transmission dynamics of Visceral leishmaniasis (VL) was formulated and analyzed. The basic reproductive number R0 was obtained using the next generation matrix method. The model which was parameterized using the 2011 cases of Visceral Leishmaniasis in South Sudan, was used to assess two control measures. Numerical simulation reveals that the exposed population is reduced by high detection rate, and low biting rate of sandflies. Further, our model simulation gave the values of the contact rate of susceptible human, α1 and the detection rate of new cases, σ at which the basic reproductive number is less than one, (R0 < 1), equal to one (R0 = 1) and greater than one (R0 > 1).
Źródło:
World News of Natural Sciences; 2021, 37; 102-116
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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