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Paper Abstract and Keywords
Presentation 2008-06-19 15:30
A study of distribution of time to repair for telecommunication networks
Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) IN2008-12
Abstract (in Japanese) (See Japanese page) 
(in English) From the viewpoint of keeping the level of reliability in telecommunication networks, the reliability management in operation phase has been more important than that in design phase. Typical measures for the reliability management are failure rate, unavailability, and maintainability. Failure rate and unavailability are usually used as evaluation criteria for network reliability. However, there are some problems in evaluating the maintainability because it depends on the various factors such as skill levels of maintainers, operation planning, and so on. In this paper, we focus on maintainability and analyze the characteristic of distribution of time to repair. Moreover, the relationship between maintainability and actual maintenance actions is also shown.
Keyword (in Japanese) (See Japanese page) 
(in English) reliability / maintainability / mean time to repair / kernel density / logarithmic normal distribution / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 92, IN2008-12, pp. 17-22, June 2008.
Paper # IN2008-12 
Date of Issue 2008-06-12 (IN) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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)
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Conference Information
Committee IN  
Conference Date 2008-06-19 - 2008-06-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network Control, QoS, Routing, Multicast, etc. 
Paper Information
Registration To IN 
Conference Code 2008-06-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of distribution of time to repair for telecommunication networks 
Sub Title (in English)  
Keyword(1) reliability  
Keyword(2) maintainability  
Keyword(3) mean time to repair  
Keyword(4) kernel density  
Keyword(5) logarithmic normal distribution  
1st Author's Name Hiroyuki Funakoshi  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Tatsuya Matsukawa  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Date Time 2008-06-19 15:30:00 
Presentation Time 25 
Registration for IN 
Paper # IEICE-IN2008-12 
Volume (vol) IEICE-108 
Number (no) no.92 
Page pp.17-22 
#Pages IEICE-6 
Date of Issue IEICE-IN-2008-06-12 

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