Resilience metrics: a conceptual thought in risk management contexts ; Métricas de resiliência: uma reflexão conceptual no contexto da gestão do risco

The application of the concept of resilience in the field of crisis and risk management is relatively recent but its development has been very relevant. The term resilience has been applied to different areas over the years, and the word resilience can be considered as partially polysemic. From the mechanics of materials, psychology and ecology, in the 21st century resilience has come to accompany the term sustainability and to characterize a management characteristic and the ability to rehabilitate natural systems and installations. Resilience management is a complementary process interconnected with that of risk management and involves several social and technical dimensions.As techniques have evolved, particularly with the application of new analysis and decision support technologies, the phrases attributed to Lord Kelvin (1824-1907) "what cannot be measured cannot be improved" or "what is real can always be measurable” may be one philosophical justification for the interest in characterization and quantitative analysis, among other practical reasons. Indeed, the concepts of risk and resilience can be approached by different methodologies, but there is a great practical interest in the quantification of these concepts. Thus arise the theme of conceptualization and the metric of resilience. The bibliography contains references to different ways to define and quantify engineering resilience, involving its multiple dimensions.The text is based on a literature analysis of the subject and a subsequent personal reflection, with a view to presenting simplified methods of resilience metrics as well as a critical analysis of the advantages in the quantification of resilience, and also its limitations. ; A aplicação do conceito de resiliência no domínio da gestão de crises e do risco é relativamente recente mas tem tido um desenvolvimento muito relevante. O termo resiliência tem sido aplicado ao longo do tempo a diferentes áreas e a palavra resiliência pode ser considerada como parcialmente polissémica. Desde a ...