I am Professor at the University of Macedonia (UoM, http://www.uom.gr), Thessaloniki, Greece.I am the Director of SMILE (Smart & Mobile Interactive Learning Environments, http://smile.uom.gr) lab and CONTA (COmputer Networks and Telematics Applications, http://conta.uom.gr) group at UoM. I have a M.Sc. and a Ph.D. degree in Computer Engineering, University of Southern California, Los Angeles (https://viterbischool.usc.edu/).My research interests include open, mobile, adaptive, personalised, collaborative learning & assessment; user experience & acceptance of smart IoT systems & services; routing in wireless & mobile networks; Internet & social media marketing.I have published two (2) books, more than one hundred (100+) peer-reviewed journal papers, one hundred fifty (150+) peer-reviewed conference papers and twenty (20+) peer-reviewed chapter books. I have received over 7,000 citations, h-index = 43, i10-index = 126, (October 2021): https://scholar.google.com/citations?user=1AAOD6YAAAAJ&hl=enI teach courses (postgraduate, undergraduate and continuing education) on Educational Technology, Digital Marketing, E-Commerce & E- Entrepreneurship, Human-Computer Interaction, Computer & Networking Technologies, Information Systems Applications in Economy & Business, etc.I have been the Director (2008-14) and the deputy Director (2000-2006) of the Interdepartmental Programme of Postgraduate Studies in Information Systems at UoM (http://mis.uom.gr).I have received dozens of research awards (e.g. Best Conference paper) and fellowships (e.g. Greek State Scholarships Foundation -IΚΥ, Fulbright). I have been Visiting Professor at the University Pompeu Fabra (2015), Open University of Catalonia (2014), University of Southern California (1998), Technical University of Denmark (1997), University of Helsinki (1997) and Helsinki University of Technology (1997).I have been Keynote Speaker at five (5) international conferences, in the program committee of dozens international conferences and in the editorial board of dozens international journals. I have been principal and/or scientific investigator in more than 10 projects and have participated in more than 30 projects. Finally, I have been evaluator of dozens project proposals (European, Greek), journal papers, conference papers, Ph.D. theses, M.Sc. theses, professors’ promotions etc.