Browsing Department of Mathematics and Physics by Title
Now showing items 1-20 of 34
-
Alternative Multipole Expansion of the Electron Correlati on Term
(arXiv.org, 2017)An alternative multipole expansion of the correlation term is derived. Modified spherical Bessel type functions which simplify as a summation of multiple ord ers of basic trigonometric functions are generated from this ... -
The application of logistic regression in modeling of survival chances of HIV-positive patients under highly active antiretroviral therapy (HAART): A Case of Nyakach District, Kenya
(Basic Research Journal, 2014)In Kenya the number of persons requiring antiretroviral Therapy (ART) in 2012 was over 90,000 while globally more than 1.4 million were under ART in the year 2012. Though ART treatment has decreased mortality of HIV associated ... -
APPLICATION OF RCBD IN DETERMINING DEVIATION OF PRICES OF BASKET COMMODITIES IN SUPERMARKETS IN MOMBASA COUNTY
(Mathematical Theory and Modeling, 2018)This study reveals the significant deviation, correlation and statistical significance and variance on the prices of the commodities charged by the four supermarkets in Mombasa County. A statistical model, Randomized ... -
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 $n{\in}{\mathbb{Z}}^+$ ... -
COMPUTING FUZZY SUBGROUPS OF SOME SPECIAL CYCLIC GROUPS
(Communications of the Korean Mathematical Society, 2019)In this paper, we discuss the number of distinct fuzzy subgroups of the group Zpn × Zqm × Zr, m = 1, 2, 3 where p, q, r are distinct primes for any n ∈ Z + using the criss-cut method that was proposed by Murali and Makamba ... -
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 ... -
A little more on ideals associated with sublocales
(Categories and General Algebraic Structures with Applications, 2024-01)As usual, let RL denote the ring of real-valued continuous functions on a completely regular frame L. Let βL and λL denote the StoneCech compactification of ˇ L and the Lindel¨of coreflection of L, respectively. There is ... -
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: ...