SIMC 2019

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A Stochastic hierarchical system steady-state availability model
(Strathmore University, 2019) Musiga, Lydia
Stochastic models are adept at modeling the dependability attributes of critical systems. The dependability attributes include availability, reliability, safety, integrity, maintainability, survivability, performance and confidentiality. This paper presents a novel method of computing the steady-state availability of a system using the closed form approach. Continuous Time Markov Chain models are instrumental in deriving the steadystate availability balance equations of the system modules from which the closed form solutions are obtained. Imperfect coverage and switch-over are incorporated into the Continuous Time Markov Chain models where applicable.