Modelling critical infrastructure systems

This paper examines the basis of what constitutes a system/s and discusses the commonalities in relation to critical infrastructure system. It focuses on identifying, and discussing system characteristics, complexity, inter-relationships, dynamics and the importance of modelling as applied to critical infrastructure systems. It then considers four differing system-modelling styles with the view to assess and discuss their potential to model critical infrastructure systems, ahead of selecting the most promising and suitable for adoption to critical infrastructure system modelling