Browsing Department of Mathematics and Physics by Title
Now showing items 4-23 of 31
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CdxZn1-xS/Pbs Thin film solar cell
(Global Advanced Research Journal of Engineering, Technology and Innovation, 2014)In this work, n-type CdxZn1-xS and p-type Pbs layers were optimized through chemical solution technique for solar cells. CdxZn1-xS was grown at 82°C while Pbs layers were grown at room temperature utilizing aqueous conditions. ... -
Classifying fuzzy subgroups of the abelian group Zp1× Zp2×···× Zpn for distinct primes p1, p2,···, pn
(2017)In this paper, we classify the fuzzy subgroups of the group G= Zp1× Zp2×···× Zpn where p1, p2,···, pn are distinct primes and n∈ Z+. We develop an algorithm for counting the distinct fuzzy subgroups of the group G using ... -
COMPUTING FUZZY SUBGROUPS OF SOME SPECIAL CYCLIC GROUPS
(Korean Mathematical Society, 2019)In this paper, we discuss the number of distinct fuzzy subgroups of the group ${\mathbb{Z}}_{p^n}{\times}{\mathbb{Z}}_{q^m}{\times}{\mathbb{Z}}_r$, m = 1, 2, 3 where p, q, r are distinct primes for any $n{\in}{\mathbb{Z}}^+$ ... -
Convergence of the Laplace and the alternative multipole expansion approximation series for the Coulomb potential
(2023-06-20)Multipole expansion is a powerful technique used in many-body physics to solve dynamical problems involving correlated interactions between constituent particles. The Laplace multipole expansion series of the Coulomb ... -
Effects of Fluid and Reservoir Characteristics on Dimensionless Pressure and Derivative of a Horizontal Well in a Bounded Oil Reservoir with Simultaneous SingleEdge and Bottom Water Drive
(2020-10)This study investigates the effects of fluid, wellbore and reservoir characteristics on dimensionless pressure and dimensionless pressure derivatives at late time flow of a horizontal well in a bounded oil reservoir ... -
Evaluation of Sea-Water Intrusion in Coastal Aquifers Using both Numerical Methods and Causal Research: A Case Study of Mombasa, Kenya
(Scientific Research Publishing, 2021-07-02)This research carried out in Mombasa Island links research done in 2020 on the effects of sea-water intrusion and the current state. The aquifer in Mombasa Island is semi-confined and consists of limestone and coral rock. ... -
The Impact of HIV/AIDS Treatment and Counseling on the Prevalence of Tuberculosis and Malaria Co Infections
(International Journal of Mathematical Analysis, 2023)HIV/AIDS remains one of the leading causes of death in the world with its effects most devastating in Sub Saharan Africa due to its dual infection with opportunistic infections especially malaria and tuberculosis. An ... -
Mathematical description of a bounded oil reservoir with a horizontal well
(Afr. J. Pur e Appl. Sci, 2021-01-29)Horizontal wells are more productive compared to vertical wells if their performance is optimized. For a completely bounded oil reservoir, immediately the well is put into production, the boundaries of the oil reservoir ... -
A Mathematical Model for Pressure Distribution in a Bounded Oil Reservoir Subject to Single-Edged and Bottom Constant Pressure
(IOSR Journal of Mathematics, 2020-07)Well test analysis of a horizontal well is complex and difficult to interpret. Most horizontal well mathematical models assume that horizontal wells are perfectly horizontal and are parallel to the top and bottom ... -
Modeling Damping for a Loaded Spring in an Acoustic Liquid Media
(Engineering International, 2016)Free vibrating motion can take place in an acoustic media. This motion can be steady hence have constant periodic variations or unsteady and thus experience light damping or heavy damping. We give a modeled analysis of ... -
Modeling of Petroleum Prices in Kenya Using Autoregressive Integrated Moving Average and Vector Autoregressive Models
(2021)The demand for crude oil and petroleum products in Kenya has been increasing very fast over the past twenty years. This is mainly because this particular commodity is used in many sectors of the country’s economy. ... -
Modelling Turbulence Using the Staggered Grid and Simplec Method
(International Journal of Innovative Science and Research Technology, 2020-05)In a natural convection, local density differences and a resulting pressure gradient accelerate the fluid. In this paper a numerical study of a turbulent, natural convection problem is performed with an incompressible ... -
Multipole expansion of integral powers of cosine theta
(2020-11)Legendre polynomials form the basis for multipole expansion of spatially varying functions. The technique allows for decomposition of the function into two separate parts with one depending on the radial coordinates only ... -
Near-exact non-relativistic ionization energies for many-electron atoms
(The Royal Society, 2022-03-23)Electron–electron interactions and correlations form the basis of difficulties encountered in the theoretical solution of problems dealing with multi-electron systems. Accurate treatment of the electron–electron problem ... -
THE NUMBER OF DISTINCT FUZZY SUBGROUPS OF THE GROUP r p q Z n × Z m × Z FOR DISTINCT PRIMES p, q, r AND m, n ∈ Z+
(2022)The equivalence relation ‘~’ defined by Murali and Makamba is used to find the number of the distinct fuzzy subgroups of the group r , p q Z n × Z m × Z where p, q, r are distinct primes with m and n as Received: ... -
A NUMERICAL STUDY OF TURBULENT NATURAL CONVECTION IN A RECTANGULAR ENCLOSURE USING A TWO-EQUATION TURBULENCE MODEL
(Asian Journal of Mathematics and Computer Research, 2017)Turbulent natural convection has been studied both numerically and theoretically. This work numerically studies turbulent natural convection in a rectangular enclosure with varying aspect ratios of 0.5, 1 and 2. The vertical ... -
ON THE CYCLE INDICES OF FROBENIOUS GROUPS
(2010)There are several very useful formulas, which give the cycle indices of the binary operation of the sum, product, composition and power group of M and H in terms of cycle indices of M and H. One very useful binary operation ... -
Parameter-free Separable Lowest-order Non-relativistic Hamiltonian for Helium Atom
(arXiv preprint arXiv, 2018-04-25)Electron-electron correlation forms the basis of difficulties encountered in many-body physics. Accurate treatment of the correlation problem is likely to unravel some nice physical properties of matter embedded in the ... -
Partitioning of the Electron Correlation Energy
(arXiv preprint arXiv, 2017-08-14)Electron-electron correlation forms the basis of difficulties encountered in many-body problems. Accurate treatment of the correlation problem is likely to unravel some nice physical properties of matter embedded in this ... -
Partitioning of the Electron-Electron Interaction
(New Horizons in Mathematical Physics, 2020-06)Electron-electron correlation forms the basis of difficulties encountered in many-body problems. Accurate treatment of the correlation problem is likely to unravel some nice physical properties of matter embedded in this ...