Towards QVA – Quantitative Vulnerability Assessment: a generic practical model

Gheorghe, Adrian V.; Vamanu, Dan V.

doi:10.1080/1366987042000192219

Cited by 21 publications

(9 citation statements)

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“…One such concept is illustrated in Fig. 12, which leverages qualitative vulnerability assessment (QVA) tools and decision support systems (DSS) (Gheorghe and Vamanu 2004). Numerous tangible and intangible variables would be used to determine target and critical loads and ultimately the vulnerability of orbits and their visual representations.…”

Section: Conclusion and The Path Aheadmentioning

confidence: 99%

The Space Infrastructure Vulnerability Cadastre: Orbital Debris Critical Loads

Gheorghe

Yuchnovicz

2015

Int J Disaster Risk Sci

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Orbital debris from over 50 years of human activity in space are threatening the operations of existing and future satellites and the sustainability of high-value satellite orbits. This technical memorandum calls for the development of a cadastre that depicts the vulnerability of critical satellite orbits to accumulating orbital debris. A space infrastructure vulnerability cadastre could serve as a governance tool for use by developers and operators of critical space infrastructures to better communicate the current and future vulnerability of high-value orbits to the accumulation of orbital debris. These high-value orbits are susceptible to ''loss'' for decades or centuries if generation of orbital debris continues unabated. The concept of environmental critical loads is applied to heavily used orbits as a way to indicate acceptable debris density for satellite operations, and when debris density / risk thresholds approach unacceptable levels that reduce the probability of sustaining spacecraft operations in those orbits.

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Section: Conclusion and The Path Aheadmentioning

confidence: 99%

The Space Infrastructure Vulnerability Cadastre: Orbital Debris Critical Loads

Gheorghe

Yuchnovicz

2015

Int J Disaster Risk Sci

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“…The openness of a system to lose its design functions or the degree to which a system, subsystem, or component is in situations where it is exposed to those specific hazards that would be harmful or damaging to the system (Dowdney et al 1995;Turner et al 2003;Adger 2006;Gheorghe and Vamanu 2004).…”

Section: Vulnerabilitymentioning

confidence: 99%

Antifragility analysis and measurement framework for systems of systems

Johnson

Gheorghe

2013

Int J Disaster Risk Sci

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The twenty-first century is defined by the social and technical hazards we face. A hazardous situation is a condition, or event, that threatens the well-being of people, organizations, societies, environments, and property. The most extreme of the hazards are considered X-Events and are an exogenous source of extreme stress to a system. X-Events can also be the unintended outputs of a system with both positive (serendipitous) and negative (catastrophic) consequences. Systems can vary in their ability to withstand these stress events. This ability exists on a continuum of fragility that ranges from fragile (degrading with stress), to robust (unchanged by stress), to antifragile (improving with stress). The state of the art does not include a method for analyzing or measuring fragility. Given that "what we measure we will improve," the absence of a measurement approach limits the effectiveness of governance in making our systems less fragile and more robust if not antifragile. The authors present an antifragile system simulation model, and propose a framework for analyzing and measuring antifragility based on system of systems concepts. The framework reduces a multidimensional concept of fragility into a two-dimensional continuous interval scale.

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“…Gheorghe, Vamanu, 2004) that one possible macroscopic model for a system vulnerability metrics may be built on the following assumptions: Gheorghe, Vamanu, 2004) that one possible macroscopic model for a system vulnerability metrics may be built on the following assumptions:…”

Section: The Face Of Thingsmentioning

confidence: 99%

Energy Security

2011

NATO Science for Peace and Security Series C: Environmental Security

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Towards QVA – Quantitative Vulnerability Assessment: a generic practical model

Cited by 21 publications

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The Space Infrastructure Vulnerability Cadastre: Orbital Debris Critical Loads

The Space Infrastructure Vulnerability Cadastre: Orbital Debris Critical Loads

Antifragility analysis and measurement framework for systems of systems

Energy Security

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