I am Dr. Inthira Chaiya, an Associate Professor in the Department of Mathematics, Faculty of Science, Mahasarakham University, Thailand. I received my Ph.D. in Mathematics with a specialization in Mathematical Modeling and Dynamical Systems. My research focuses on mathematical modeling of biological and epidemiological systems, nonlinear differential equations, and computational methods for complex systems. I have published extensively in international peer-reviewed journals on epidemic modeling, impulsive differential equations, and population dynamics, with particular emphasis on COVID-19 transmission dynamics and ecological modeling. I actively serve as a reviewer for several international journals and have contributed to interdisciplinary research projects linking mathematics with public health and environmental sciences. My academic contributions have been recognized through invited talks, research grants, and editorial roles in special issues.