Volume 23 (2014)

1

Research Article

JUST-IN-TIME SCHEDULING PROBLEMS ON IDENTICAL PARALLEL MACHINES

M. O. Adamu^*, Abass O.

Problems involving Just-In-Time (JIT) scheduling provide an interesting and difficult challenge, which is addressed critically within this paper. This study considers the scheduling of parallelidentical machines to maximize the (weighted) number of on-time jobs. This problem is known to be NP-complete. Three problems were dealt with in this paper. Two greedy heuristics with time complexity O(n log...

Jun, 2014 pp. 77-95

2

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

3

Research Article

A NOTE ON A CHARACTERIZATION OF LOCAL NULL SEQUENCE

SUNDAY OLUYEMI^*

We replace an arbitrary sequence of positive real numbers by a sequence of positive integers in a characterization of local null sequence, and consequently procure an example of a separated locally convex space in which convergence is Mackey.

Jun, 2014 pp. 105-109

4

Research Article

Crank-Nicolson Galerkin Error Estimates for Linear Stochastic Wave Equation driven by Space-Time White Noise

Ignatius N. NJOSEH^*

We considered the linear stochastic wave equation driven by space-time white noise. The Galerkin finite element method was used to derive the approximate solution. For the time discretization, we applied the Crank-Nicolson finite di erence approximation scheme and the error estimates were proved both in the L2 and maximum norms.

Jun, 2014 pp. 39-48

5

Research Article

DERIVATION AND ANALYSIS OF BLOCK IMPLICIT HYBRID BACKWARD DIFFERENTIATION FORMULAE FOR STIFF PROBLEMS

MUHAMMAD, R.^*, Y. A. Yahaya, L. Idris

The Hybrid Backward Differentiation Formula (HBDF) for the case k = 3 was reformulated into continuous form using the idea of multistep collocation. The continuous form wasevaluated at some grid and of grid points, which gave rise to discrete schemes employed as block methods for direct solution of the first-order ordinary differential equation y0 = f(x; y). Therequirement of a starting value and ...

Jun, 2014 pp. 49-57

6

Research Article

CONSUMER PREFERENCES FOR MOBILE PHONES AMONGST STUDENTS IN AKOKA AREA OF LAGOS STATE

M. O. Adamu^*, Ijezie O.A.

Over the years after the invention of mobile phones, people are still purchasing and using mobile phones today. However, different people prefer different attributes of mobile phones.The main purpose of this study was to identify the factors that influence consumer preferences on mobile phone purchase. The specific attributes examined in this study were brand, price, colour, quality and warranty. ...

Jun, 2014 pp. 58-69

7

Research Article

BIOINFORMATICS: THE RELATIONSHIP BETWEEN INFORMATION TECHNOLOGY AND THE SCIENCE OF GENETIC ENGINEERING

Usman-Hamza F. E^*

This study takes a look at the relationship between information technology and the science of genetic engineering. It explains how bioinformatics originated, explaining the variousfields involved. This study briefly explains how information technology has helped solve complex biological problems by introducing learning conditional transducer algorithm whichprovides a framework for understanding DN...

Jun, 2014 pp. 70-76

8

Research Article

ON SPECIAL CASES OF OPIAL'S AND HARDY'S INEQUALITIES

Anthonio Y. O^*, K. Rauf, Michael Oyelami Ajisope, Wahab Olalekan Taofeek

In this paper, we establish the relationship between Opial-type and Hardy-type integral inequalities which extend Anthonio and Rauf Opial-type inequalities for convex function.

Jun, 2014 pp. 14-19

9

Research Article

Error Estimates of the Fully Discrete Solution of Linearized Stochastic Cahn-Hilliard Equation

Ignatius N. NJOSEH^*, H. I. OJARIKRE

We studied the finite element analysis of the linearized Stochastic Cahn-Hilliard equation. The Galerkin finite element method was used to discretize the given equation. Based on the finiteelements, the completely discrete approximation scheme was formulated by applying the backward Euler difference approximation in time. The completely discrete solution was interpreted.in terms of analytic semigr...

Jun, 2014 pp. 20-29

10

Research Article

A Two Step Lo- Stable Second Derivative Hybrid Block Method for Solution of Still Initial Value Problems

OLUSHEYE AKINFENWA^*, ALI AHMED, OSUNKAYODE KABIR

We present a two step Lo-stable second derivative hybrid block method of order eight for the direct solution of still Initial Value Problems (IVPs). The main method and additionalmethods are obtained from the same continuous scheme derived using interpolation and collocation technique to form the block method. The stability properties of the block methodis discussed via a single matrix equation. T...

Jun, 2014 pp. 30-38

11

Research Article

CONSTRUCTION OF POLYNOMIAL BASIS AND ITS APPLICATION TO ORDINARY DIFFERENTIAL EQUATIONS

Aliu, T.^*, O. M. Bamigbola

The study identifies the versatility of basis functions in expansionary method by constructing basis functions of finite order, which satisfy some smoothness and differentiability conditions. Effort was intensified towards solving empirical problems via the finite element method.

Jun, 2014 pp. 1-13