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Articles: Department of Mathematics and Statistics: Recent submissions

Now showing items 21-40 of 85

Evidence-based modeling of combination control on Kenyan youth HIV/AIDS dynamics

Ronoh, Marilyn; Chirove, Faraimunashe; WairimuI, Josephine; Ogana, Wandera (plos one, 2020-11-17)

We formulate a sex-structured deterministic model to study the effects of varying HIV testing rates, condom use rates and ART adherence rates among Adolescent Girls and Young Women (AGYW) and, Adolescent Boys and Young ...
A Mathematical Model of Contact Tracing during the 2014–2016 West African Ebola Outbreak

Ronoh, Marilyn; Burton, Danielle; Lenhart, Suzanne; Edholm, Christina J.; Levy, Benjamin; Washington, Michael L.; Greening, Bradford R. Jr; White, K. A. Jane; Lungu, Edward; Chimbola, Obias; Kgosimore, Moatlhodi; Chirove, Faraimunashe; Machingauta, M. Helen (MDPI, 2021-03-12)

The 2014–2016 West African outbreak of Ebola Virus Disease (EVD) was the largest and most deadly to date. Contact tracing, following up those who may have been infected through contact with an infected individual to ...
Modeling the Effect of HIV/AIDS Stigma on HIV Infection Dynamics in Kenya

Ronoh, Marilyn; Chirove, Faraimunashe; Correia, Hannah E.; Levy, Ben; Abebe, Ash; Kgosimore, Moatlhodi; Chimbola, Obias; Machingauta, M. Hellen (springer, 2021-03-15)

Stigma toward people living with HIV/AIDS (PLWHA) has impeded the response to the disease across the world. Widespread stigma leads to poor adherence of preventative measures while also causing PLWHA to avoid testing and ...
A Deterministic Model Of HIV Transmission Between Two Closed Patches Incorporating The Monod Equation

Ngari, Cyrus, G; Mirgichan, James, K; Karanja, Stephen (IISTE, 2019-11-06)

Among other factors, migration has significantly contributed to the spread of HIV. Recent studies have revealed that new infections occur along major transport corridors and truck-drivers have overall higher prevalence ...
Aperture Maximization with Half-Wavelength Spacing, via a 2-Circle Concentric Array Geometry that is Uniform but Sparse

Kinyili, Musyoka; Kitavi, Dominic Makaa; Ngari, Cyrus Gitonga (Journal of Advances in Mathematics and Computer Science, 2019-05-25)

This paper proposes a new sensor-array geometry (the 2-circle concentric array geometry), that maximizes the array’s spatial aperture mainly for bivariate azimuth-polar resolution of direction-of-arrival estimation ...
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 ...
Implementation of Blockchain Technology in Africa

Jepkoech, Jennifer; Anyembe, Shibwabo.C. (European Centre for Research Training and Development UK, 2019-08)

Africa is currently tackling challenges to technologies and innovation in its suitable development agenda.in the journey to embracing the blockchain technology, ICT plays a very vital role in addressing the challenges. ...
Information Technology In Government Services Delivery: A Case Study Of Huduma Center Kenya

Gakii, Consolata; Mukiri, Victoria F.; Murimi, Maurice (2018-12)

The Huduma Kenya program was developed by the Kenyan government with an aim of using technology to improve the service delivery to the citizens. The Program uses many channels to meet different and varied needs of the ...
TELECOMMUTING MODEL FOR SMALL AND MEDIUM ENTERPRISES (SMES) IN KENYA

Gakii, Consolata; Mwangi, Waweru; Okeyo, George (2016-07)

The aim of this study was to use adaptive structuration theory as a tool to come up with Telecommuting model that can be adopted by SMEs in Kenya. A survey was done to understand the extent of telecommuting and the ...
Effects of Culture Conditions on Growth of Kefir Grains using Milk for Nutrition and Health: An Application of Response Surface Methodoly with Box-behnken Design

Atitwa, Edwine B.; Koske, Joseph K; Muindi, John M. (IISTE, 2018)

This combined process was successfully modeled by response surface methodology method with a Box– Behnken design. In this work, Box-Behnken Design of response surface methodology was used to investigate the effects of ...
The optimum settings of culture conditions for optimum growth of kefir grains for nutrition and health using RSM with BBD

Atitwa, Edwine B.; Koske., Joseph K; Mutiso, John M. (2016)

This thesis provides the process used to optimize the growth of kefir grains for nutrition and health to yield the optimal size of the kefir grain. This combined process was successfully modeled and optimized by response ...
Socio-Economic Determinants of Low Birth Weight in Kenya: An Application of Logistic Regression Model

Atitwa, Edwine B. (Science Publishing Group, 2015-11)

Babies born with Low-birth weight are at increased risk for serious health problems which are accompanied by disabilities and even death. The purpose of this study was to determine socio-economic factors that lead to low ...
Performance Evaluation of Internet of Things Prototype for Preeclampsia Monitoring in Antenatal Care

Musyoka, Faith M. (2020-12)

Globally, Preeclampsia has been an alarming condition, thus creating a major concern in its prevention and monitoring. Software developers have implemented several Internet of Things systems to transform human society ...
Universal Health Coverage

Osoro, Alfred A.; Atitwa, Edwine B.; Moturi, John K. (2020-09)

Universal Health Coverage has attracted global attention as an ideal vehicle that will drive health care services to the individuals, families, and communities globally. Good health systems are capable of serving 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 ...
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 ...
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 ...
Hybrid Cram er-Rao bound of direction finding, using a triad of cardioid sensors that are perpendicularly oriented and spatially collocated

Kitavi, Dominic M.; Wong, Kainam Thomas; Lin, Tsair-Chuan; Wu, Yue Ivan (Acoustical Society of America, 2019-07)

Cardioid microphones/hydrophones are highly directional acoustical sensors, which enjoy easy availability via numerous commercial vendors for professional use. Collocating three such cardioids in orthogonal orientation ...
Socio-Demographic Factors And Knowledge Influencing Associated With ORS Use For Diarrhoea In Children At Miathene Sublocation, Meru County, Kenya

Ngechu, Judith Naita; Okeyo, Hesbon Okello; Ongeso, Abednego; Wanyoike, Peter Kamau; Atitwa, Edwin (2020-05)

Oral rehydration solution is the gold standard treatment option in childhood diarrhoea though there are other practices like use of rice water, water sugar mixtures, continuous breast feeding for under six months ...
A uniform circular array of isotropic sensors that stochastically dislocate in three dimensions—The hybrid Cramer-Rao bound of direction-of-arrival estimation

Wong, Kainam Thomas; Ndiku, Morris Zakayo; Kitavi, Dominic M.; Lin, Tsair-Chuan (Acoustical Society of America, 2019-07)

An array’s constituent sensors could be spatially dislocated from their nominal positions. This paper investigates how such sensor dislocation would degrade a uniform circular array (UCA) of isotropic sensors (like ...

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