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Soutenance de thèse de Milad POURSOLTAN - 3 avril 2023

Milad POURSOLTAN soutiendra sa thèse, le 3 avril à 10h30, dans l'Amphi JP. DOM du Laboratoire IMS sur le sujet :"Methodological and operational framework for learning, validation and improvement of Cyber-Physical and Human Systems based on modelling and simulation".

Until the middle of the 20th century, it was assumed that technology should be considered independently and humans (with mental and social conditions) should follow the given technical structures. In the second half of the 20th century, the intertwining of social and technological systems led to the birth of a new ecosystem called the "socio-technic." The socio-technical approach developed the idea that humans and technology should be considered as a unified system. The revolution of Cyber-Physical Systems in the 21st century and their growing interactions with humans reinforced the need for the socio-technical approach. So, it gave rise to the new concept of intelligent systems, the so-called Cyber-Physical and Human systems (CPHS). The study, design, and development of such systems are complex and require immense effort. Modelling and simulation (M&S) are recognized as practical and effective tools to help decision-makers, designers, and developers. Despite the advantages of M&S for CPHS, there are significant challenges for modellers. Because they commonly are not acquainted with the nature of merging socio-technical environments and do not know what to model and how. The present thesis involves drawing appropriately from several disciplines to take advantage and integrate the theories and methods from engineering, computer, human, and social science to pave the way for modellers. Starting with an extensive analysis of the concepts, terminology, and application areas of CPHS, this thesis proposes a three-layer framework including a Purpose-Centric Layer, a Behaviour-Centric Layer, and an Execution-Centric Layer to assist modellers in understanding, modelling, and developing executable models of CPHS. In the Purpose-Centric Layer, we propose a Generic Purpose-Centric model based on activity theory to study CPHS as a socio-technical system and make an initial conceptual model. In the Behaviour-Centric Layer, we propose a Generic Behaviour-Centric Model to bridge the CPHS conceptual model with a specification of its corresponding simulation model, using an extended form of the Belief-Desire-Intention architecture and the High-Level Language for Systems Specification formalism. In the Execution-Centric Layer, we propose a Generic Execution-Centric Model which implements the CPHS simulation model in relation to its experimental frame. The framework is showcased with an intelligent manufacturing system. This work is not intended for one specific application domain of CPHS and can be used for extensive CPHS applications from health, manufacturing, and transport systems to emergency systems.

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