In response to the challenges related to integrate human considerations within complex interactive systems, the Human-System Integration (HSI) initiative has been proposed. Nevertheless, the HSI approach is difficult to fit efficiently into the system engineering processes because of the lack of shared methodologies, modeling semantics and tools. This paper focuses on the needs for a new methodology and an adapted formalism to improve the collaboration between the system engineers and HSI practitioners. It concludes with the presentation of our methodology based on the Model-Based System Engineering (MBSE) and the SysML modelling language.
This paper describes an experiment about the relevance of using Cognitive Work Analysis (CWA) to improve the system definition process. CWA is a method for analyzing complex sociotechnical systems from a cognitive point of view. We submitted a set of exercises involving some specification tasks to a group of professional system engineers, some were asked to build on CWA data, while others to rely on some classical method results (Hierarchical Task Analysis). Beyond the results obtained from this specific experiment, this paper aims at demonstrating that controlled experiments are not only possible but also relevant in system engineering field.
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