 John Krogstie is the Norwegian representative for IFIP TC8 and was Chair (2010–2015) of IFIP WG 8.1 on information systems design and evaluation.Krogstie's research interests include information systems, conceptual modeling, mobile information systems, eGovernment and enterprise modelling.The SEQUAL framework is a reference model for evaluating the quality of models, the semiotic quality framework (SEQUAL) developed by John Krogstie.