Journal of Applied Mathematics
Volume 2012 (2012), Article ID 348384, 17 pages
Research Article

Numerical Oscillations Analysis for Nonlinear Delay Differential Equations in Physiological Control Systems

School of Applied Mathematics, Guangdong University of Technology, Guangzhou 510006, China

Received 29 August 2012; Accepted 8 December 2012

Academic Editor: Mehmet Sezer

Copyright © 2012 Qi Wang and Jiechang Wen. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper deals with the oscillations of numerical solutions for the nonlinear delay differential equations in physiological control systems. The exponential -method is applied to and it is shown that the exponential -method has the same order of convergence as that of the classical -method. Several conditions under which the numerical solutions oscillate are derived. Moreover, it is proven that every nonoscillatory numerical solution tends to positive equilibrium of the continuous system. Finally, the main results are illustrated with numerical examples.