Home // PESARO 2025, The Fifteenth International Conference on Performance, Safety and Robustness in Complex Systems and Applications // View article
Authors:
Odd Ivar Haugen
Keywords: emergent properties; cesm metamodel; multi-level/multi-model safety analysis; safety; system complexity; systems approach
Abstract:
Society increasingly relies on complex systems whose behaviour is determined, not by the properties of each part, but by the interaction between them. The behaviour of such systems is emergent. Modelling emergent system behaviour requires a systems approach that incorporates the necessary concepts that are capable of determining such behaviour. The CESM metamodel (Composition, Environment, Structure, Mechanisms) is a model of system models. A set of system models needs to address the elements of CESM at different levels of abstraction to be able to model the behaviour of a complex system. Modern ships contain numerous sophisticated equipment, often accompanied by a local safety system to protect their integrity. These control systems are then connected into a larger integrated system in order to achieve the ship’s objective or mission. The integrated system becomes, what is commonly known as, a system of systems which can be termed a complex system. Examples of such complex systems are the ship’s dynamic positioning system and the power management system. Three ship accidents are provided as examples of how system complexity may contribute to accidents. Then, the three accidents are discussed in terms of how the Multi-Level/Multi-Model Safety Analysis might catch scenarios such as those leading to the accidents described.
Pages: 1 to 8
Copyright: Copyright (c) IARIA, 2025
Publication date: May 18, 2025
Published in: conference
ISSN: 2308-3700
ISBN: 978-1-68558-280-7
Location: Nice, France
Dates: from May 18, 2025 to May 22, 2025