RPDepartment of Mathematics
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Car Antifreeze and Coolant: Comparing Water and Ethylene Glycol as Nano Fluid Base Fluid
(Sretech Journal of publication, 2018)Most internal combustion engines are fluid cooled using liquid coolants mostly water and ethylene glycol, whose heat transfer capabilities are limited. An alternative for improving their thermophysical properties is the ... 
RatioCumProduct Estimator using Multiple Auxiliary Attributes in Single Phase Sampling
(Scientific Research Publishing, 201406)In this paper, we have proposed a class of ratiocumproduct estimator for estimating population mean of study variable for single phase sampling using multiauxiliary attributes. The expressions for mean square error ... 
Hydromagnetic Mixed Convection Flow of Nanofluid with Slip, Viscous Dissipation and Joule Heating Past an Inclined Plate
(American Scientific Publishers, 2017)A numerical analysis is performed on the combined effects of Joule heating and viscous dissipation on a steady twodimensional flow of an electrically conducting waterbased nanofluid containing three different nanoparticles: ... 
Modelling and Optimal Control of Typhoid Fever Disease with CostEffective Strategies
(Hindawi Publishing Corporation, 2017)We propose and analyze a compartmental nonlinear deterministic mathematical model for the typhoid fever outbreak and optimal control strategies in a community with varying population.The model is studied qualitatively ... 
Adomian Decomposition Method On Nonlinear Singular Cauchy Problem of EulerPoisson Darbuox equation
(Islamic Azad University, Rasht Branch, 2010)In this paper, we apply Picard’s Iteration Method followed by Adomian Decomposition Method to solve a nonlinear Singular Cauchy Problem of Euler Poisson Darboux Equation. The solution of the problem is much simplified ... 
Double stratification effects on heat and mass transfer in unsteady MHD nanofluid flow over a flat surface
(SpringerOpen, 2017)The focus of this work is to theoretically investigate the problem of double stratification on heat and mass transfer in an unsteady hydromagnetic boundary layer flow of a nanofluid over a flat surface. The model employed ... 
Modelling childhood disease outbreak in a community with inflow of susceptible and vaccinated newborn
(Research India Publications, 2016)This paper investigates the transmission dynamics of a Childhood disease outbreak in a community with direct inflow of susceptible and vaccinated newborn. Qualitative analysis of the SEIR nonlinear model is performed ... 
Ethylene glycol (EG)‑based nanofluids as a coolant for automotive radiator
(BioMed Central Ltd, 2016)In this paper, the cooling capabilities of an ethylene glycol (EG)based nanofluid containing three different types of nanoparticles: copper oxide (CuO), aluminium oxide (Al2O3), and titanium dioxide (TiO2) are investigated. ... 
Limitations in the convectional isbn10 code.
(201202)The International Standard Book Number system (ISBN10) which was in operation until 2007 uniquely identified every book published internationally but was later replaced with the ISBN13. The code was had the ability to ... 
Preparedness of Mathematics Teachers in Transforming the Teaching and Learning of Secondary School Mathematics, a Case of Tigania East District, Kenya
(International Journal of Humanities and Social Science, 201504)This study aimed at investigating the current level of mathematics’ teacher preparedness in using technology for teaching. Teacher preparedness was measured in terms of use of available ICT resources and relevant teacher ... 
Teachers’ perspectives towards use of technology, the case of GeoGebra in teaching Mathematics in Kenya
(Scientific Research Journal (SCIRJ), 201509)This study looks at GeoGebra as a type of technology and assesses teachers’ perspective towards training and use of GeoGebra as a tool to enhance learning of mathematics. This paper is reporting the findings of a larger ... 
The Implications of HIV treatment on the HIVmalaria coinfection dynamics: a modeling perspective
(BioMed Central, 2015)Most hosts harbor multiple pathogens at the same time in disease epidemiology. Multiple pathogens have the potential for interaction resulting in negative impacts on host fitness or alterations in pathogen transmission ... 
On the spectrum
(Cambridge University Press, 1990) 
On the convexity of stampfli's numerical range
(Cambridge University Press, 1996)This paper investigates a certain type of numerical range introduced by Stampfli. In particular, we investigate the convexity of this set of elements of operators on Hilbert spaces and its relationship to the algebra ... 
Ratiocumproduct estimator using multiple auxiliary attributes in twophase sampling
(Scientific Research Publishing, 2014)In this paper, we have proposed three classes of ratiocumproduct estimators for estimating population mean of study variable for twophase sampling using multiauxiliary attributes for full information, partial information ...

Car Antifreeze and Coolant: Comparing Water and Ethylene Glycol as Nano Fluid Base Fluid
(Sretech Journal of publication, 2018)Most internal combustion engines are fluid cooled using liquid coolants mostly water and ethylene glycol, whose heat transfer capabilities are limited. An alternative for improving their thermophysical properties is the ... 
RatioCumProduct Estimator using Multiple Auxiliary Attributes in Single Phase Sampling
(Scientific Research Publishing, 201406)In this paper, we have proposed a class of ratiocumproduct estimator for estimating population mean of study variable for single phase sampling using multiauxiliary attributes. The expressions for mean square error ... 
Hydromagnetic Mixed Convection Flow of Nanofluid with Slip, Viscous Dissipation and Joule Heating Past an Inclined Plate
(American Scientific Publishers, 2017)A numerical analysis is performed on the combined effects of Joule heating and viscous dissipation on a steady twodimensional flow of an electrically conducting waterbased nanofluid containing three different nanoparticles: ... 
Modelling and Optimal Control of Typhoid Fever Disease with CostEffective Strategies
(Hindawi Publishing Corporation, 2017)We propose and analyze a compartmental nonlinear deterministic mathematical model for the typhoid fever outbreak and optimal control strategies in a community with varying population.The model is studied qualitatively ... 
Adomian Decomposition Method On Nonlinear Singular Cauchy Problem of EulerPoisson Darbuox equation
(Islamic Azad University, Rasht Branch, 2010)In this paper, we apply Picard’s Iteration Method followed by Adomian Decomposition Method to solve a nonlinear Singular Cauchy Problem of Euler Poisson Darboux Equation. The solution of the problem is much simplified ... 
Double stratification effects on heat and mass transfer in unsteady MHD nanofluid flow over a flat surface
(SpringerOpen, 2017)The focus of this work is to theoretically investigate the problem of double stratification on heat and mass transfer in an unsteady hydromagnetic boundary layer flow of a nanofluid over a flat surface. The model employed ... 
Modelling childhood disease outbreak in a community with inflow of susceptible and vaccinated newborn
(Research India Publications, 2016)This paper investigates the transmission dynamics of a Childhood disease outbreak in a community with direct inflow of susceptible and vaccinated newborn. Qualitative analysis of the SEIR nonlinear model is performed ... 
Ethylene glycol (EG)‑based nanofluids as a coolant for automotive radiator
(BioMed Central Ltd, 2016)In this paper, the cooling capabilities of an ethylene glycol (EG)based nanofluid containing three different types of nanoparticles: copper oxide (CuO), aluminium oxide (Al2O3), and titanium dioxide (TiO2) are investigated. ... 
Limitations in the convectional isbn10 code.
(201202)The International Standard Book Number system (ISBN10) which was in operation until 2007 uniquely identified every book published internationally but was later replaced with the ISBN13. The code was had the ability to ... 
Preparedness of Mathematics Teachers in Transforming the Teaching and Learning of Secondary School Mathematics, a Case of Tigania East District, Kenya
(International Journal of Humanities and Social Science, 201504)This study aimed at investigating the current level of mathematics’ teacher preparedness in using technology for teaching. Teacher preparedness was measured in terms of use of available ICT resources and relevant teacher ... 
Teachers’ perspectives towards use of technology, the case of GeoGebra in teaching Mathematics in Kenya
(Scientific Research Journal (SCIRJ), 201509)This study looks at GeoGebra as a type of technology and assesses teachers’ perspective towards training and use of GeoGebra as a tool to enhance learning of mathematics. This paper is reporting the findings of a larger ... 
The Implications of HIV treatment on the HIVmalaria coinfection dynamics: a modeling perspective
(BioMed Central, 2015)Most hosts harbor multiple pathogens at the same time in disease epidemiology. Multiple pathogens have the potential for interaction resulting in negative impacts on host fitness or alterations in pathogen transmission ... 
On the spectrum
(Cambridge University Press, 1990) 
On the convexity of stampfli's numerical range
(Cambridge University Press, 1996)This paper investigates a certain type of numerical range introduced by Stampfli. In particular, we investigate the convexity of this set of elements of operators on Hilbert spaces and its relationship to the algebra ... 
Ratiocumproduct estimator using multiple auxiliary attributes in twophase sampling
(Scientific Research Publishing, 2014)In this paper, we have proposed three classes of ratiocumproduct estimators for estimating population mean of study variable for twophase sampling using multiauxiliary attributes for full information, partial information ... 
Mixture Regression Estimators Using MultiAuxiliary Variables and Attributes in TwoPhase Sampling
(Scientific Research Publishing, 2014)In this paper, we have developed estimators of finite population mean using Mixture Regression estimators using multiauxiliary variables and attributes in twophase sampling and investigated its finite sample properties ... 
Modelling Internally Displaced Persons’ (IDPs) Time to Resuming their Ancestral Homes after IDPs’ Camps in Northern Uganda Using Parametric Methods
(IJSR, 2014)In this paper the time that the Internally Displaced Persons (IDPs) took to return from IDPs Camps to their ancestral homes in Northern Uganda was modeled using parametric methods. A retrospective dataset was collected ... 
The Use of Mesh Generation Function for the Solution of Natural Convection Problems
(Faculty of Science Kenyatta University, 2005)A mesh generation procedure for the solution of coupled, nonlinear, partial differential equation is described. The essence of the procedure is the use of a grid generating function, which results in a strong refinement ... 
The Method of Variable False Tranelents for the Solution of Coupled Elliptic Equations
(Faculty of Science Kenyatta University, 2005)A method for the numerical solution of coupled, nonlinear elliptic, partial differential equation is described. The essential feature of the formulation is the use of different false transient factors in different flow ... 
Nonparametric regression method for estimating the error variance in unistage sampling
(Faculty of Science Kenyatta University, 2000)Nonparametric regression provides computationally intensive estimation of unknown finite population quantities. Such estimation can be more robust than inference tied to model based inference. A nonparametric procedure ...