Abstract: In this paper we discuss about the steady-state availability of systems with times to outages and recoveries that are generally distributed. Also we provide the steady-state availability for a system subject to unplanned outages, for which times-to-outages are exponentially distributed and planned outages for which times-to outages have bounded distributions. This concept is applied to ACTH and Cortisol Responses due to Stress in Healthy Adults with Significant Childhood Maltreatment. For this we consider, a group of people with childhood maltreatment like Emotional Neglect, Sexual Abuse, Physical Abuse etc., Results shows that, subjects with childhood maltreatment have greater availability of Cortisol and ACTH levels.
Keywords: Cortisol, ACTH, stress, system availability