Volume 29, Issue 2 (September)

1

Research Article DOI: 10.67897/njma.2019.c9lcx57e

Global Solvability of Navier-Stokes Equations with Temperature in Infinite Channel

Peter Anthony^*, D. Hyuk Isaac, S. Magaji Abubakar, M. Gyuk Philibus

This paper determines the global, in time, solvability ofNavier-Stokes equation coupled with temperature in a Poincare-like unbounded domain. Existence, uniqueness and furtherregularity of solutions were obtained for the full Bousinesqsystem in uniformly local spaces. We have used themaximum principle for temperature to establish the cardinalproperties of this illusive phenomena of turbulence.

Dec, 2019 pp. 1-17 24 views 18 downloads

2

Research Article DOI: 10.67897/njma.2019.cnwssf0q

Variational Iteration Method for Solving Higher-order Integro-dierential Equations

M. O. Olayiwola^*, M. O. Ogunniran

In this paper, a numerical method for the solution ofIntegro-differential equations is discussed. The variationaliteration method (VIM), which is a modified general Lagrange multiplier method is employed to solve differenttypes of integro-differential equations. The results revealedthat the VIM is very effective, simple and is of high accuracy for solving higher-order integro-differential equation...

Dec, 2019 pp. 18-23 5 views 5 downloads

3

Research Article DOI: 10.67897/njma.2019.aoxif6o6

New Generalizations of Hardy-type Inequalities on Time Scales

E. E. Aribike^*, Kamilu RAUF

This paper consists of new generalizations of Hardy-type.integral inequalities and its reversed form on time scales byusing modified Jensen's inequality via convexity. Furthermore,multidimensional Hardy-type inequalities with weightFunctions on time scales are also investigated and proved.

Dec, 2019 pp. 24-35 3 views 4 downloads

4

Research Article DOI: 10.67897/njma.2019.m42hcrae

A family of harmonic univalent functions denied by a linear multiplier fractional operator

Y. O. Afolabi^*, Olubunmi A. Fadipe-Joseph, Catherine N. Ejieji, Olanike R. Oluwaseyi

In this paper, we use a generalized linear multiplier fractionaldifferential operator to define a new family of harmonic univalentfunctions in the unit disk. Also, we obtain the coecient conditions,convolution condition and convex combination for the class.

Dec, 2019 pp. 36-47 5 views 4 downloads

5

Research Article DOI: 10.67897/njma.2019.uv8ct7po

On the Performance Assessment of Mean Methods in Estimating Process Capability for Skewed Distributions

J. O. Braimah^*, S. O. Elakhe, N. Edike

This study compares the performances of Gini Mean, Clementsand Box-Cox transformation methods for estimating processcapability Indices when the distribution of the process data is(skewed) non-normal. The use of process performance index(PPI) is implored for process capability analysis (PCA) usingWeibull distribution. Data was simulated using R software witha decision interval (target point) of 1.0...

Dec, 2019 pp. 48-69 6 views 5 downloads

6

Research Article DOI: 10.67897/njma.2019.non1bmd6

Enumeration of Partial Contraction Transformation Semi-groups

Sulaiman A. Akinwunmi^*, Samuel O. Makanjuola

Let M = {1, 2 . . . n} on a partial transformation α, dom (α) : |αx − αy| whenever x, y ∈ dom(α) and |x − y|, then the semi-group CP T(M) of all contraction partial transformation of M is denoted by CP T n. In this article, we derive the formula for some of the (sequences) values of CP T n and obtained that |P Cn| = Pn k=0  n−2 q−3  , |P ODn| =  n−(p−1) n−p  and |αS| = 2n − 1 = 3n + 3.

Dec, 2019 pp. 70-77 6 views 5 downloads

7

Research Article DOI: 10.67897/njma.2019.i5rkole1

Linear Programing Formulations for Optimum Students Transportation Need in a University with two Campuses

N. Nyor^*, P. O. Evans, S. Audu, S. Henry

This work aimed at optimizing student's transportation needand that of the transport agencies at Federal University ofTechnology Minna, Nigeria, which operates two campuses.Simplex method was used as a method of solution by makinguse of Linear Program Solver (LiPS) Software. The resultsfrom the Linear Programing formulations showed percentageincrements of 10%, 6%, 17%, and 3% students for the resp...

Dec, 2019 pp. 78-90 3 views 4 downloads

8

Research Article DOI: 10.67897/njma.2019.6s53us9j

An Investigation of the Effects of Diffusion on a Competition Model

J. N. Ndam^*, E. O. Tuoyo

We present a reaction-diffusion competition model, to describethe spatial spread of two competing species. Standard analysisof the model using the travelling wave procedure was employedto determine the existence of travelling wave solutions andthe stability of the equilibrium points. The result shows thatthe zero equilibrium point is stable, contrary to that of adiffusion-free competition model. T...

Dec, 2019 pp. 91-103 3 views 4 downloads

9

Research Article DOI: 10.67897/njma.2019.arbbhn6f

Optimal Control Analysis of an SIRS Epidemic Model with the Asymptotic Transmission

E. A. Bakare^*, O. Olubosede, E. B. Are

In this paper, we developed and analysed a SIRS(Susceptible-Infected-Recovered-Susceptible) epidemic model that capturesthe asymptotic transmission in the presence of two controlinterventions (vaccination and treatment). Non-linear deter-ministic system of di erential equations was used to capturethe asymptotic transmission of the SIRS epidemic model andthe basic reproduction number, R0, with the ...

Dec, 2019 pp. 104-128 5 views 6 downloads

10

Research Article DOI: 10.67897/njma.2019.no5jcf0j

Comparison between Taylor Series and Picard Method of Successive Approximation in Solving First Order Ordinary Differential Equation

S. A. Onitilo^*, D. O. Daniel

In this paper, Taylor series method and Picard's method of suc-cessive approximation is being compared with their exact solutionof first order ordinary di erential equation. For numerical anal-ysis of the methods, four examples are considered. The resultsobtained are compared with their corresponding exact solutions.The results confirmed the e ective and ease of using Picard'smethod of successive ...

Dec, 2019 pp. 129-146 3 views 4 downloads

11

Research Article DOI: 10.67897/njma.2019.rv8yr82w

On the Logistic Regression of Prevalence of Malaria Fever with Complications

P. E. Omaku^*, S. I. Jerome

Logistic regression is used to evaluate the e ect of Malariacomplicated by Typhoid, Hypertension and HIV on covariatesAge and sex. Three sets of models were fitted with regards tothe complications. Results indicate that the e ect of sex for allcomplications were not significant, when Malaria is complicatedwith Typhoid; age was significant for patients who are less than19 years and above 50 years o...

Dec, 2019 pp. 147-155 6 views 4 downloads