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Paper Abstract and Keywords
Presentation 2025-03-14 14:00
Optimal Operation Policies for a System with Random Variable of Operational Period
Satoshi Mizutani, Toshio Nakagawa (AIT) R2024-44
Abstract (in Japanese) (See Japanese page) 
(in English) This paper considers some system with operating period with random variable and stopping period
with a constant interval, and it consists of one unit. We consider some optimization problems of duration time of the stopping period. The system operates its primary jobs in operating period,
and might fail in the period. It is repaired in stopping period and the repair time is given as random variable. It might be delayed to start again the next operating period when its failure is not repaired within the stopping period. We propose some models for such a system. (i) Cost minimization model:
We consider loss cost of its failure and repairment, and discuss optimal duration time of the stopping period which minimizes the expected loss cost. (ii) Profit maximization model: The system has some income besides its loss cost, and the profit is a difference between the income and the loss cost.
For each models, we treat the cases that operating period has a constant period and the duration time has a probability distribution. We discuss analytically the optimal duration time of the stopping period which minimizes the expected loss cost and maximizes the expected profit.
Keyword (in Japanese) (See Japanese page) 
(in English) Replacement Problem / Operating Period with Random Variable / Stopping Period / Cost Minimization / Profit Maximization / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 435, R2024-44, pp. 12-16, March 2025.
Paper # R2024-44 
Date of Issue 2025-03-07 (R) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF R2024-44

Conference Information
Committee R  
Conference Date 2025-03-14 - 2025-03-14 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Reliability of Electromechanical Devices, Reliability of Computer System, Reliability General 
Paper Information
Registration To R 
Conference Code 2025-03-R 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Optimal Operation Policies for a System with Random Variable of Operational Period 
Sub Title (in English)  
Keyword(1) Replacement Problem  
Keyword(2) Operating Period with Random Variable  
Keyword(3) Stopping Period  
Keyword(4) Cost Minimization  
Keyword(5) Profit Maximization  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Satoshi Mizutani  
1st Author's Affiliation Aichi Institute of Technology (AIT)
2nd Author's Name Toshio Nakagawa  
2nd Author's Affiliation Aichi Institute of Technology (AIT)
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Speaker Author-1 
Date Time 2025-03-14 14:00:00 
Presentation Time 25 minutes 
Registration for R 
Paper # R2024-44 
Volume (vol) vol.124 
Number (no) no.435 
Page pp.12-16 
#Pages 5 
Date of Issue 2025-03-07 (R) 

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