Interdependent Response of Networked Systems

Modelling Dependencies Between Critical Infrastructures

“…2 Taxonomy of dependency and failure adapted by [1,8] graph), while dependencies are inferred assuming some sort of relationship existing among nodes belonging to different networks [19,20,21]. Topology-based or structural approaches generally identify discrete states for each component (node or link) and usually with two states: failed and normal, i.e., each node is either fully working or completely out-of-work.…”

“…Today, the structural vulnerability is one of the most applied tools (see for example [20,[44][45][46][47][48] and the references therein). It is not clear if this is due to the intrinsic importance of such types of relations, or because it is the only approach for which it is feasible to acquire the needed data.…”

“…This introduces several degrees of freedom into the model that may lead to erroneous conclusions. In [20] the authors consider the coupling of networks able to reproduce the real structure of a small-scale water and gas networks. They introduce a simple rule to establish interdependencies among networked elements based upon geographical proximity.…”

Static and dynamic resource allocation models for recovery of interdependent systems: application to the Deepwater Horizon oil spill

“…A variety of models (see Pederson et al 2006;Medal et al 2011) have been proposed to understand and analyze the linkages among critical infrastructure systems. Network models can quantify the vulnerability, resilience, and interdependence of infrastructure systems (Dueñas-Osorio et al 2007;Johansson and Hassel 2010). System dynamics models attempt to capture the interdependence between infrastructure and humans who rely on infrastructure during a disruption (Conrad et al 2006).…”

Empirical Data and Regression Analysis for Estimation of Infrastructure Resilience with Application to Electric Power Outages

“…Several schema have been proposed for modeling interdependent industry and infrastructure sectors, including system dynamics models (Min et al 2007), agent-based models (Bagheri and Ghorbani 2007), and network models (Dueñas-Osorio et al 2007). Our risk-based interdependency modeling approach, whose methodological background is provided in this section, is an extension of the economic input-output model (Leontief 1936).…”