Ian Sommerville

critical systems dependability lscits socio-technical software engineering systems engineering it systems computer security ulss requirements security critical infrastructure requirements engineering cybersecurity complexity tutorial process improvement failure safety security engineering reliability scada cni software specification software testing system engineering fault-tolerance education research system engineering scale responsibility modelling recovery systems design virus/worm internet digital learning environment malware redundancy diversity air accident kegworth system engineer cloud computing nasa organizations cooperative work cscw workflow ethnography case study human error systems