Dr Vadim Zverovich is an Associate Professor of Mathematics and the Head of the Mathematics and Statistics Research Group at the University of the West of England (UWE) in Bristol. An accomplished researcher, he is also a Fellow of the UK Operational Research Society, and was previously a Fellow of the prestigious Alexander von Humboldt Foundation in Germany. In 2016, he was awarded Higher Education Academy fellowship status, and the Faculty of Environment and Technology of the UWE named him its researcher of the year in 2017. His research interests include graph theory and its applications, networks, probabilistic methods, combinatorial optimisation and emergency responses. With 30 years of research experience, he has published many research articles and two books on the above subjects, and established an internationally recognized academic track record in the mathematical sciences covering both theoretical and applied aspects. Dr Pavel Skums is an Associate Professor and the Director for Graduate Studies at Computer Science Department of the Georgia State University. He is a recipient of the prestigious National Science Foundation CAREER award, GSU Dean's of College of Arts and Sciences Early Career Award and US Centers for Disease Control and Prevention Charles C. Shepard Science Award. His research concentrates on graph and network theories and their applications in genomics, epidemiology and immunology. He has published more than 60 papers and book chapters, and has been a guest editor of more than 20 special issues of leading journals.