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193 articles
71
Research Article DOI: 10.67897/njma.2017.i0lakgkh

Steady Flow of a Third Grade Fluid in a Porous Half-Space using Adomian Decomposition Method

M. A. Usman*, O. R. Hassan, O. M. Ibiyemi

This study investigates the steady flow of a third grade fluid in a porous half space medium. The problem is a non-linear, two-point boundary value problem on semi-infinite material. The analytical solution of the problem was obtained using Adomian Decom position Method (ADM) which is proved to be highly accurate and efficient as the series solution converges very fast. The series solution of ADM ...

Sep, 2017 pp. 61−82 12 views 4 downloads
72
Research Article DOI: 10.67897/njma.2015.lg48mssh

THE COUNTERPART OF A RESULT OF WEBB FOR THE BOUNDED DUAL Eb

SUNDAY OLUYEMI*

Denote by E, E+ andEb the continuous dual, the sequential dual and the bounded dual, respectively, of the lcs(E,τ). Well-known is that, [1, 22.2, p.87][2. Proposition 2.5.7, p.107], f ∈ E ⇐⇒ kerf is closed. John Webb added that, [5, Proposition 1.9., p.345], f ∈ E+ ⇐⇒ kerf is sequentially closed. I, hereby, add that f ∈ Eb ⇐⇒ kerf is locally closed. The result substantially improves             [4...

Dec, 2015 pp. 62−66 11 views 4 downloads
73
Research Article DOI: 10.67897/njma.2026.7uel8ksq

Monitoring CSM in Northern Nigeria: A Logistic and OLS Regression Approach

S. O. Elakhe, Rofiyat Patience Braimah, d I. W. Edokpa, J. O. Braimah*

Cerebrospinal meningitis (CSM) remains a major public health challenge in sub-Saharan Africa. This study analyzed records of 390 suspected CSM patients (2020–2023) from Aminu Kano Teaching Hospital, Nigeria, using sex, age, and month as explanatory variables. Logistic regression and ordinary least square (OLS) models were fitted to identify epidemic patterns. Findings reveal that children under fi...

Jun, 2026 pp. 63-80 18 views 6 downloads
74
Research Article DOI: 10.67897/njma.2021.2r7wuwhf

On the Convergence and Consistence of Rational Integrator for the Solution of Ordinary Differential Equation

O. A. Elakhe*, A. O. Isere

This research work is concerned with the determination of solution to different classes of problems in Ordinary Differ ential Equations (ODEs). We derived an A0-Stable rational integrators for the solution of ordinary differential equations. We establish the convergence, consistency and the stability of our scheme in the interpolants of order m = 3, through the rational integrator. The stability a...

Jul, 2021 pp. 64−76 10 views 4 downloads
75
Research Article DOI: 10.67897/njma.2019.utydc390

Homotopy Perturbation with Laplace Transforms Method for Solving Singular Initial Value Problems

M. O. Olayiwola*, A. Adegoke

In this paper, the Homotopy Perturbation Method with Laplace Transform (LT-HPM) is employed in solving the Lane-Emden type of differential equations. Application is on linear and nonlinear Lane-Emden singular initial value problems. Com parison with exact solution shows considerable acceleration in convergence. The method is effective and easy to im plement. The results are also presented in tabul...

Apr, 2019 pp. 65−76 21 views 9 downloads
76
Research Article DOI: 10.67897/njma.2016.oocdqbk2

Combinatorial Properties of Order-Preserving and Order-Decreasing Semigroup of Partial Injective Contraction Mapping

B. M. Ahmed*, Samuel O. Makanjuola

Let CIn be the semigroup of partial injective contraction mappings. The focus of this paper is to provide some properties subsemigroups of CIn which are semigroup of order reserving partial injective contraction mapping (OCIn) and semigroup of order decreasing partial injective contraction mapping (DCIn). The results on this work are combinatorial properties of subsemigroups of CIn which are both ...

Jun, 2016 pp. 65-79 5 views 4 downloads
77
Research Article DOI: 10.67897/njma.2015.nf7bz5ec

A Seventh-order Block Integrator for Solving Stiff Systems

B. I. Akinnukawe*, S. A. Okunuga

In this paper, an L0- stable Second Derivative Block Integrator of uniform order seven is proposed for the numerical integration of stiff systems, including large stiff systems resulting from semi discretization of Parabolic differential equations. The conven tional 3-step second derivative backward differentiation formula is obtained from a continuous scheme while the additional methods are obtai...

Dec, 2015 pp. 67−78 14 views 13 downloads
78
Research Article DOI: 10.67897/njma.2022.ebv3gty7

Some Properties of a Certain Class of Analytic Functions Defined by a Convolution Operator

Aminat O. Ajiboye*, Kunle Oladeji Babalola

In this work, we study some properties of subclass B α n+1(β) of the class of analytic functions defined by a convolution operator. In fact, this class generalizes the class of Yamaguchi functions. Thereafter, some geometric properties such as inclusion, Fekete-Szeg¨o functional and upper bounds for some Hankel determinants are presented. Indeed, results from some of our corollaries and remarks sh...

Jun, 2022 pp. 68-79 11 views 3 downloads
79
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
80
Research Article DOI: 10.67897/njma.2018.krnud43e

On the Numerical Solution of Linear and Non-linear Fredholm Integral Equations

M. O. Olayiwola*, P. Ozoh, M. A. Usman, A. W. Gbolagade

In this research article, solutions of linear and nonlinearFredholm Integral Equations of the second kind were obtainedthrough the Variational Iteration Method (VIM).The accuracy rate acquired from the comparison of theobtained results with the exact solution uncovers thatthe method is efficient and computationally effective.

Jun, 2018 pp. 70-77 3 views 4 downloads