African Journal of
Mathematics and Computer Science Research

  • Abbreviation: Afr. J. Math. Comput. Sci. Res.
  • Language: English
  • ISSN: 2006-9731
  • DOI: 10.5897/AJMCSR
  • Start Year: 2008
  • Published Articles: 257

Table of Content: July 2011; 4(7)

July 2011

MHD Heat transfer aspects between two parallel conducting porous walls in a rotating system, with Hall currents

  An analysis is presented for heat transfer in fully developed viscous incompressible hydromagnetic flow of an ionized gas bounded by two parallel porous walls under the action of uniform transverse magnetic field, when rotated with an angular velocity about an axis perpendicular to the walls, by taking Hall effect into account. The governing equations of motion and heat transfer expressing the physical...

Author(s): T. Linga Raju and P. S. R. Murty

July 2011

Mixed type symmetric and self duality for multiobjective variational problems with support functions

  In this paper, a pair of mixed type symmetric dual multiobjective variational problems containing support functions is formulated. This mixed formulation unifies two existing pairs Wolfe and Mond-Weir type symmetric dual multiobjective variational problems containing support functions. For this pair of mixed type nondifferentiable multiobjective variational problems, various duality theorems are established...

Author(s): Iqbal Husain and Rumana G. Mattoo

July 2011

A Branch and Bound approach to a state government capital budgeting

  The capital budgeting problem is a multi-constraint Knapsack problem. Hence this paper provides a solution to a capital budgeting problem of Akwa Ibom State, Nigeria using a Branch and Bound approach. The capital projects are summarized in four broad groups: The Economic sector (X1), The Social Service sector (X2), The Environmental/Regional Development sector (X3), and...

Author(s): N. P. Akpan, E. H. Etuk and I. D. Essi

July 2011

4th-Step implicit formula for solution of initial value problems of second order ordinary differential equations

  This paper proposes a direct method of solution for second order initial value problems of ordinary differential equations. Its derivation adopts Taylor series expansion techniques and Dahlquist stability test model. It was revealed from the results obtained that the method is consistent, convergent and zero-stable. Numerical examples are solved to ensure accuracy of the method on both linear and non-linear...