Journal of Quality in Maintenance Engineering: Volume 4 Issue 4

An optimal software release problem under cost rate criterion: artificial neural network approach

Yasuhide Shinohara, Yasuhiko Nishio, Tadashi Dohi, Shunji Osaki

The determination of the release schedule for a new software product is the most important issue for designing and controlling a software development process. In fact, the optimal…

Minimal repair policies for an economic manufacturing process

T. Dohi, N. Kaio, S. Osaki

This paper deals with economic manufacturing quantity (EMQ) models with stochastic machine breakdown and repairs. Under two minimal repair policies to maintain a production…

Reliability analysis of microprocessor systems with watchdog processors

Mitsuhiro Imaizumi, Kazumi Yasui, Toshio Nakagawa

A large number of microprocessors (μPs) have been widely used in many practical fields and the demand for improvement of their reliabilities have recently increased. Watchdog…

Operational software availability measurement with two kinds of restoration actions

Koichi Tokuno, Shigeru Yamada

This paper develops a plausible software availability model for operational use. In particular, we consider two kinds of restoration scenarios; one involves the debugging activity…

A new modified discrete preventive maintenance policy and its application to hard disk management

Hiroaki Sandoh, Hiroyuki Hirakoshi, Toshio Nakagawa

This study proposes a new modified discrete preventive maintenance policy where failures of a system can be detected only by inspections and be fixed by minimal repairs. The…

Evaluation measures of archive copies for file recovery mechanism

Sayori Nakagawa, Naohiro Ishii, Satoshi Fukumoto

This paper derives three evaluation measures of file recovery with n archive copies: when a failure is detected uniformly during (0, T),the mean recovery overhead, the overhead…

An optimal maintenance policy for a server with decreasing arrival rate and non‐cancelable customer

Junji Koyanagi, Hajime Kawai

This paper considers a maintenance problem for a queueing system. The arrival rate decreases as the server state becomes worse. The system can be recovered by maintenance, though…