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About this paper
Amro M. Farid
Amro M. Farid developed a methodology for assessing the resilience of convergent systems-of-systems, integrating Hetero-Functional Graph Theory (HFGT) with Model-Based Systems Engineering (MBSE) via SysML. The approach introduces formal quantitative measures for actual and latent engineering resilience, demonstrating on an Energy-Water Nexus system that functional roles, not just structural centrality, dictate system criticality and that latent resilience better reveals vulnerabilities by quantifying the loss of up to 100% of delivery paths for complex services.
Key insights
- Criticality in hetero-functional systems is primarily determined by a resource's functional role and its position within operand flows, not by traditional structural centrality metrics like eigenvalue centrality.
- Latent Engineering Resilience (LER) provides a more nuanced and sensitive indicator of system vulnerability and 'structural health' than Actual Engineering Resilience (AER), which can mask significant path losses.
- HFGT offers a robust 'middle ground' for resilience analysis, combining structural abstraction with functional specificity to analyze complex, composite services delivered by systems-of-systems.
Summary by alphaXiv.
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