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Time spent below a random threshold by a Poisson driven sequence of observations

Published online by Cambridge University Press:  14 July 2016

S. N. U. A. Kirmani*
Affiliation:
University of Northern Iowa
Jacek Wesołowski*
Affiliation:
Politechnika Warszawska
*
Postal address: Department of Mathematics, University of Northern Iowa, Cedar Falls, IA 50614-0506, USA
∗∗Postal address: Wydział Matematyki i Nauk Informacyjnych, Politechnika Warszawska, Warszawa 00-661, Poland. Email address: wesolo@mini.pw.edu.pl

Abstract

The mean and the variance of the time S(t) spent by a system below a random threshold until t are obtained when the system level is modelled by the current value of a sequence of independent and identically distributed random variables appearing at the epochs of a nonhomogeneous Poisson process. In the case of the homogeneous Poisson process, the asymptotic distribution of S(t)/t as t → ∞ is derived.

Type
Short Communications
Copyright
Copyright © Applied Probability Trust 2003 

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