Academic Profile

Dr. Ardak Kashkynbayev is a member of IEEE. He obtained his Ph.D. degree in Mathematics from Middle East Technical University, Turkey. Currently, he is an Associate Professor at the Department of Mathematics, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan. His research interest includes discontinuous dynamical systems, control theory, neural networks, mathematical biology, and mathematical medicine.

Editorial Roles

No Editorial Roles

This user currently does not serve as an editor for any ICCK journals.

ICCK Publications

Total Publications: 1
Open Access | Research Article | 27 February 2026
Sigmoid-function Based Fixed-time Stability of Delayed Nonlinear Dynamic Systems
by
Guodong Zhang
,
Ardak Kashkynbayev
,
Dimitrios K. Gerontitis
,
Kuo-Shou Chiu
Journal of Nonlinear Dynamics and Applications | Volume 2, Issue 1: 13-19, 2026 | DOI: 10.62762/JNDA.2026.431637
Abstract
This paper investigates fixed-time stability of delayed nonlinear dynamic systems. At first, by designing an inequality with sigmoid-function, a new kind of fixed-time stability lemma is constructed. Then, as an application, the new proposed lemma is applied to discuss fixed-time stabilization(FT) for a kind of delayed neural networks. At last, simulations are also given to show the effectiveness of the derived results. More >
Graphical Abstract
Sigmoid-function Based Fixed-time Stability of Delayed Nonlinear Dynamic Systems