In this paper, we consider two kinds of sequential checkpoint placement problems with
infinite/finite time horizon. For these problems, we apply approximation methods based on …

This paper examines comprehensive evaluation of aperiodic time-based checkpointing and
rejuvenation schemes maximizing the steady-state system availability in an operational …

Dr. Shunji Osaki is an internationally recognized researcher in the field of system reliability
engineering spanning over four decades. In 2001–2011, he worked in Nanzan University …

In software reliability engineering, software-rejuvenation and-checkpointing techniques are
widely used for enhancing system reliability and strengthening data protection. In this paper …

In this paper we consider two kinds of sequential checkpoint placement problems with
infinite/finite time horizon. For these problems, we apply the approximation methods based …

In this article we summarize some aperiodic checkpoint placement algorithms for a software
system over infinite and finite operation time horizons, and compare them in terms of …

Checkpoints are the most crucial component of the failure recovery function, established to
set the starting point of recovery operations and to limit their quantity. In this study, we …

In this paper we consider operational software system with two failure modes and develop a
stochastic model to quantify steady-state system availability. Three kinds of …

Wearable Cognitive Assistance (WCA) applications present a challenge to benchmark and
characterize due to their human-in-the-loop nature. Employing user testing to optimize …

In this paper we consider aperiodic checkpoint placement problems with equality constraints
over an infinite time horizon and develop both exact and approximate algorithms to …