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Now showing items 11-20 of 113
A numerical study on longitudinal vibration for fixed free bar using finite difference method and discretization technique
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
This paper aims to determine the variation of the axial displacement in a fixed bar using Finite Difference Method (FDM). The mathematical modeling is derived based on the wave equation and solved by analytically using ...
Portfolio optimization with linear programming approach
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
Variance has been commonly used as risk measure in portfolio optimization since the introduction of mean-variance model by Markowitz. However, the mean-variance model is a quadratic programming model. It takes longer time ...
Convective boundary layer flow of a nanofluid
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
Research has shown that nanofluids which are engineered
colloids composed of a base fluid and nanoparticles have
higher thermal conductivity and possess enhanced heat
transfer coefficients compared to the base fluids. ...
QR decomposition via givens rotations
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
Different forms of Givens rotations have been proposed and available in the publishing industry. In this paper we derive via Pythagoras and Taylor series expansion to establish a noble ideal on the derivation of Givens ...
On derivation of fifth order 2-point Block Backward Differentiation Formula for solving first-order ODEs
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
This method computed the approximate solution at 2-point concurrently with equidistant block. A code is develop and been compared with the classical Backward Differentiation Formula (BDF) method. The numerical results are ...
Lagrangian dual function solved with surrogate subgradient method: An analysis of step size rules
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
Lagrangian relaxation dual function is a technique commonly used to optimize non-convex problems. The difficulty in obtaining a solution method for the dual function is normally due to the function’s non-differentiable ...
A numerical solution of impact between viscoelastic slug of standard linear solid model and elastic rod
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
The study is about impact of a short viscoelastic rod (or slug) on a stationary semi-infinite elastic rod. The viscoelastic materials are modeled as standard linear solid which involve three material parameters and the ...
Key-dependent MDS matrices
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
The linear optimal diffusion primitives, i.e. MDS matrices, are widely used in block ciphers. In this paper we studied some properties of MDS matrices over finite filed; particularly we proved that MDS matrix does not ...
Comparisons of Newton-Cotes quadrature schemes with Half-Sweep SOR method for second kind linear Fredholm integral equations
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
In this paper, we investigate the applications of two different schemes of Newton-Cotes quadrature method that is repeated trapezoidal (RT) and repeated Simpson’s 31 (RS1) schemes via Half-Sweep Successive Over-Relaxation ...
Soliton solutions of KdV equation
(Universiti Malaysia Perlis (UniMAP), 2010-06-02)
One of the most popular soliton equations is the Korteweg de Vries (KdV) equation which is usually used to model shallow water waves. The general forms of this equation is given by 06=++xxxxtuuuu where u(x,t) describes the ...