Browsing Articles: Department of Mathematics and Statistics by Author "Ngari, Cyrus G."
Now showing items 1-17 of 17
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Analytical model for childhood pneumonia, a case study of Kenya
Ngari, Cyrus G.; Pokhariyal, G. P.; Koske, J. K. (Science Domain International, 2016)Pneumonia is an infection of the lungs that is caused by bacteria, viruses, fungi, or parasites. For a long time to the best of our knowledge there have not been reliable mathematical model for childhood pneumonia in ... -
Cramer-Rao Bound of Direction Finding Using a Uniform Hexagonal Array
Ndiritu, Grace Wakarima; Kitavi, Dominic M.; Ngari, Cyrus G. (2019-06)Direction-of-arrival (DOA) estimation is a key area of sensor array processing which is encountered in many important engineering applications. Although various studies have focused on the uniform hexagonal array for ... -
Cramer-Rao Bound of Direction Finding Using Uniform Arc Arrays
Nyokabi, Veronicah; Kitavi, Dominic M.; Ngari, Cyrus G. (2019)Direction-of-Arrival estimation accuracy using arc array geometry is considered in this paper. There is a scanty use of Uniform Arc Array (UAA) in conjunction with Cram er-Rao bound (CRB) for Direction-of-Arrival estimation. ... -
Estimated numerical results for the deterministic model of the under five years pneumonia in Kenya
Ngari, Cyrus G.; Pokhariyal, G. P.; Koske, J. K. (2016)In this paper the numerical results are estimated for childhood pneumonia deterministic model, using Kenyan data. The estimates of data and parameters from Kenya Health information system, ministry of Health of Kenya and ... -
A model for childhood Pneumonia Dynamics
Ngari, Cyrus G.; Malonza, David M.; Muthuri, Grace G. (Asian online journals, 2014)This paper presents a deterministic model for pneumonia transmission and uses the model to assess the potential impact of therapy. The model is based on the Susceptible-Infected-Treatment-Susceptible compartmental structure ... -
Modeling Influence Tribal Coalitions in Kenya Presidential Politics: A Case Study of Kikuyu-Kalenjin versus Luo-Kamba
Ngari, Cyrus G. (Science Domain International, 2016-04)A deterministic model was developed to describe the two dominant tribal coalition based voting bloc (A and B) and other tribes (C). The first order nonlinear ordinary differential equations were deduced using predator-prey ... -
Modeling Kenya Domestic Radicalization like A Disease Incorporating Rehabilitation Centers
Ngari, Cyrus G. (Academic Research Publishing Group, 2016)The study presents a deterministic model for radicalization process in Kenya and use the model to assess impact of rehabilitation centers to radicalization burden. The possibility of other drivers of radicalization to ... -
Modeling Scramble for other tribes votes by the three main tribal voting blocs in Kenya Presidential elections
Ngari, Cyrus G. (2016)A deterministic model was formulated to describe the tribal based voting blocs in Kenya presidential politics using four compartmental classes: Kikuyu (K), Luo (L), AKalenjin (A) and other tribes (T). The first order ... -
Modelling Vaccination and Treatment of Childhood Pneumonia and Their Implications
Ngari, Cyrus G. (Science Domain International, 2018-07)This paper presents a deterministic model for pneumonia transmission and uses the model to assess the potential impact of the vaccination, treatment and efficacy of vaccination drugs in lowering the public health impact ... -
Multinomial Logistic Modelling of Socio-Economic Factors Influencing Spending Behavior of University Students
Akelo, Jacqueline Gogo; Mbunzi, Stephen M.; Ngari, Cyrus G. (2019-06)This study aims at determining the use of Multinomial Logistic Regression (MLR) model which is one of the important methods for categorical data analysis. This model particularly deals with one nominal or ordinal response ... -
Numerical simulation of the deterministic model of the under-five year’s pneumonia in Kenya
Ngari, Cyrus G.; Pokhariyal, G. P.; Koske, J. K. (2016)In this paper the numerical simulation of the childhood pneumonia deterministic model are determined. The estimated parameters and the under-five year’s population data for year 2013 was used to simulate the developed ... -
Parameterization and Forecasting of Childhood Pneumonia Model Using Least Square Approximation, Lagrange Polynomial and Monte Carlo Simulation
Ngari, Cyrus G.; Kitavi, Dominic M. (2020-09)espite a study by [1] proposing a simple model of under five years pneumonia, doubt lingers regarding its reliability, sufficiency and validity. The research question is whether the model is valid for use or not? The ... -
Parameters and States Estimates of COVID-19 Model Using Lagrange Polynomial, Least Square Approximation and Kenya Quarantine Data
Ngari, Cyrus G.; Muthuri, Grace G.; Mirgichan, James K. (2020-10-09)Aims/ Objectives: To develop a compartment based mathematical model, fit daily quarantine data from Ministry of Health of Kenya, estimate individuals in latency and infected in general community and predict dynamics of ... -
A Simple model for the ethnic, sub ethnic, clan and religion based politics in Kenya presidential elections
Ngari, Cyrus G. (2016)A simple deterministic model with Kenya specific attributes was developed to describe the ethnic based voting blocs. Four compartmental classes: Agikuyu (A), Luo (L), Kalenjin (K) and the Rest (R) were formulated, and first ... -
Simulation of a Deterministic Model of HIV Transmission between Two Closed Patches
Mirgichan, James Khobocha; Ngari, Cyrus G.; Karanja, Stephen (2020-09)Numerical simulation of a deterministic model of HIV transmission between major cities in Kenya is carried out. The model considered two closed patches connected by the commuter movements of truck drivers being the ... -
A Theoretical Model of Corruption Using Modified Lotka Volterra Model A Perspective of Interactions between Staff and Students
Kawira, Mercy; Ngari, Cyrus G.; Karanja, Stephen (2020-09)Corruption is the misuse of power or resources for private gain. This undermines economic development, political stability, and government legitimacy, the society fabric, allocation of resources to sectors crucial for ... -
Tuberculosis model, a case study of tigania west, Kenya
Muthuri, Grace G.; Malonza, David; Ngari, Cyrus G. (2016)Tuberculosis (TB) is a bacterial disease caused by mycobacterium tuberculosis. Many mathematical models for TB have been developed but not specifically for Kenya. This study develops a deterministic model based on ...