Youssef Raffoul holds the rank of Professor and is the Graduate Program Director in the Department of Mathematics at the University of Dayton. He joined the faculty in 1999. Dr. Raffoul obtained a B.S. and M.S. from the University of Dayton in mathematics in 1987 and 1989. After receiving his Ph.D. in mathematics from Southern Illinois University at Carbondale in 1996, he joined the faculty of the Mathematics Department at Tougaloo College in Mississippi, where he became the department chair for two years until he came to Dayton. Prof. Raffoul has published extensively in the area of functional differential and difference equations and has won several awards for his research, most recently, the Career in Science Award from the Lebanese Government. In 2018, Prof. Raffoul published Qualitative Theory of Volterra Difference Equations, a comprehensive study of the theory and applications of Volterra difference equations.
"""It is written by an author who is active exactly in the field of differential equations…. The book also has an application oriented part, as resulting from the presentation of several models taken from epidemics, electrical engineering, Lotka-Volterra population models. And last but not least, each chapter of the book is endowed with exercises; moreover, Student Resources are pointed out. Summarizing, a book worth to be studied."" --zbMATH Open"