Prof. Dr. Mohamed Kayid is a Professor of Statistics at the Department of Statistics and Operations Research at King Saud University. He received a BSc degree (Mathematics, 1991) from Minia University, an M.Sc. degree (Statistics, 1999) from Al-Azhar University, and a Ph.D. degree (Statistics, 2003) from South Valley University. His research interests include reliability theory and predictive maintenance, stochastic orders, and their applications. He has published on these topics in several international journals. He is an elected reviewer for the American Mathematical Society and the Director of the Accreditation and Assessment Unit at King Saud University. He has diverse research interests in applied statistics. Some of the research methods proposed by him and his co-authors have found interesting applications in the context of reliability and engineering. His current research interests can be divided into four broad areas: stochastic aging and its applications, estimation in constrained parametric space, the theory of stochastic orders, ranking and selection problems, and related estimation problems. His work in this area has also attracted attention among engineers and has been mentioned in electrical engineering and computer science journals.