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107 articles
61
Research Article

FIVE SHORT NOTES ON BOUNDED MAPS

SUNDAY OLUYEMI*

This paper contributes five observations on bounded maps: (i) An observation on the definition of a bounded set, (ii) Three characterizations of bounded linear maps that parallel the usual general topology characterizations of continuity, (iii) An analogue of [2, PROPOSITION 3.12.1 p.254][7, Lemma 11.1.1, p.164] for bounded maps, (iv) That the Banach-Steinhaus Closure Theo rem is also true for bou...

Dec, 2015 pp. 87−99
62
Research Article

Estimating Infant and Maternal Mortality in Nigeria using Overdispersion Modelling Methods

C. I. Orabuche*, M. O. Adamu, O. E. Oladokun

In this study, models that provide more satisfactory statistical fit for data and factors that a ect infant and maternal mortality rates in Nigeria are presented. Models that detect and correct overdispersion in data are used to analyze the data provided by the National Bureau of Statistics, Nigeria. Some of the models considered are Poisson, Poisson Normal, Negative Binomial, Quasi-likelihood and...

Jun, 2016 pp. 88-110
63
Research Article

An Operator for Obtaining Nth Order Derivative of a Function Depending on Seven Independent Variables

O. O. Enoch*, F. J. Adeyeye, A. O. Ilesanmi, S. O. Adejuwon

Leibnitz's theorem is used in the product rule to generatea series method for computing the nthorder derivative ofa function that depends on seven Independent variables.The new series method does not require the knowledge ofthe preceding derivative before obtaining the succeedingones. A generalization of the method is also presented.

Jun, 2018 pp. 89-98
64
Research Article

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
65
Research Article

Some Results on a Scalable Congestion Control System

O. O. Solanke*, A. D. Aina, O. B. Alaba, M. A. Usman, T. J. Odule, K-K. A. Abdullah

In this article, a congestion control system with the facility of load balancing is designed to solve congestion problem that may be associated with transmission of data over the internet. This will enable small scale service providers to have an uninterrupted and easy way of transmitting information over the internet, using affordable and scalable system that provides connectivity when other rout...

Apr, 2019 pp. 93−101
66
Research Article

Teachers Teaching Strategies and Students Performance in Senior Secondary Schools Mathematics in Ilorin, Nigeria

Akanmu, M. A.*, Abinde, A. O., Fajemidagba, M. O.

This study investigated teachers teaching strategies and students performance in Mathematics at senior secondary schools. Specifically, the focus of the study was to determine the impact of simulation teaching method in relation to students gender and scoring levels in relation to performance in Mathematics. The sample consisted of 68 Senior School 1 students, comprising 33 males and 35 females, f...

Jun, 2014 pp. 94-104
67
Research Article

Numerical Solution of Two Dimensional Poisson and Laplace Equations

Aliu Tajudeen*, O. M. Bamigbola, and Montaz Ali

The study identifies the use of Finite Element Method with both rectangular and Triangular elements in solving two di mensional problems with Dirichlet boundary condition in a rectangular domain. We use the product functions of linear polynomial basis constructed by (Aliu & Bamigbola, 2014) on the rectangular elements. Attempt was made at con structing the basis functions for Triangular elements. ...

Sep, 2017 pp. 95 −112
68
Research Article

A Class of Implicit Five Step Hybrid Method for Solving First Order Initial Value Problem

L. Idris*, Y. A. Yahaya, U. Mohammed

In this paper, a self-starting five step continuous block hybridformulae (CBHF) with one Off-step point is developed using col-location and interpolation procedures. The CBHF is then used toproduce multiple numerical integrators that are of uniform orderand are assembled in to a single block matrix equation. Theseequations are simultaneously applied to provide the approximatesolution for the ordin...

Jun, 2018 pp. 99-107
69
Research Article

A REVIEW OF THE Pth MOMENT EXPONENTIAL STABILITY AND ALMOST SURE EXPONENTIAL STABILITY OF NON-LINEAR STOCHASTIC DELAY DIFFERENTIAL EQUATIONS WITH CONSTANT TIME LAG.

Augustine Omoghaghare Atonuje*

The paper tries to connect the pth- moment exponential stability and the almost sure exponential stability of non-linear stochastic delay differential equations (SDDEs) with small time lag. It is generally true that the pth- moment exponential stability of SDDEs and the almost sure exponential stability do not imply each other. By applying the Lyapunov function and an idea of generalized moment in...

Aug, 2026 pp. 100−111
70
Research Article

A Truncated Acceptance Sampling Inspection Plans for Finite and Infinite Lot Under Rayleigh Distribution

J. O. Braimah*, d I. W. Edokpa

In this paper, single and double acceptance sampling plans were developed when the product life time follows a Rayleigh Distri bution. The sample size (n) and Average Sample Number (ASN) for single and double sampling plans respectively were developed. The operating characteristic values for the two sampling plans were also obtained. The sampling plans were also obtained for various values of the ...

Apr, 2019 pp. 102−117