Dr. Danijela Tuljak-Suban is an Assistant Professor of Operational Research at the Faculty of Maritime Studies and Transport of the University of Ljubljana, Slovenia. She holds a doctorate in Maritime and Transport Science from the Faculty of Maritime Studies and Transport and an M.Sc. in Mathematics from the Faculty of Mathematics and Physics, University of Ljubljana. Dr. Tuljak-Suban lectures on subjects related to Mathematics, Statistics, Operation Research and Applied Mathematics in the field of maritime transport. Her research is mainly focused on the applications of operational research and fuzzy reasoning regarding vehicle routing problems (VRP) in maritime transport, especially in the hub and spoke systems, optimisation of inventory models, application of multi criteria decision making in logistics and the application of game theory in transportation. She has many references in fields relating to her research interests.