RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITS

In this paper it is performed, based on dynamic models, a comparative analysis of the reliability of two types of networks: serial-parallel and parallel-serial networks when the numbers of subnets and units in each subnet are predefined, constant numbers, but also when the lifetimes of the units are...

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Main Authors: ANDRIEVSCHI-BAGRIN, Veronica, LEAHU, Alexei
Format: Article
Language:English
Published: Technical University of Moldova 2022-12-01
Series:Journal of Engineering Science (Chişinău)
Subjects:
Online Access:https://jes.utm.md/wp-content/uploads/sites/20/2023/01/JES-4-2022_17-26.pdf
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author ANDRIEVSCHI-BAGRIN, Veronica
LEAHU, Alexei
author_facet ANDRIEVSCHI-BAGRIN, Veronica
LEAHU, Alexei
author_sort ANDRIEVSCHI-BAGRIN, Veronica
collection DOAJ
description In this paper it is performed, based on dynamic models, a comparative analysis of the reliability of two types of networks: serial-parallel and parallel-serial networks when the numbers of subnets and units in each subnet are predefined, constant numbers, but also when the lifetimes of the units are independent random variables. The equations for calculating the reliability of the related networks have been deduced. These functions are deduced for the dynamic model which is less studied and it is prooved to be relevant to the static model too. All equations are demonstrated and graphically illustrated in some examples. A few examples are analyzed graphically for different values of the number of units in the subnet and the number of subnets. This paper contains four different network topology models which are also analyzed by equations and graphically. The mathematical model described and the deduced equations will serve as a basis for the subsequent analysis of the dynamic networks of various topologies and various types of random variables that describe the lifetimes of the units of the analyzed system.
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spelling doaj.art-437d68c1e790497f9b51dd31ab97625a2023-11-01T14:46:01ZengTechnical University of MoldovaJournal of Engineering Science (Chişinău)2587-34742587-34822022-12-01XXIX41726https://doi.org/10.52326/jes.utm.2022.29(4).02RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITSANDRIEVSCHI-BAGRIN, Veronica0https://orcid.org/0000-0001-8364-9873LEAHU, Alexei1https://orcid.org/0000-0002-1670-0111Technical University of Moldova, 168 Stefan cel Mare Blvd., Chisinau, Republic of MoldovaTechnical University of Moldova, 168 Stefan cel Mare Blvd., Chisinau, Republic of MoldovaIn this paper it is performed, based on dynamic models, a comparative analysis of the reliability of two types of networks: serial-parallel and parallel-serial networks when the numbers of subnets and units in each subnet are predefined, constant numbers, but also when the lifetimes of the units are independent random variables. The equations for calculating the reliability of the related networks have been deduced. These functions are deduced for the dynamic model which is less studied and it is prooved to be relevant to the static model too. All equations are demonstrated and graphically illustrated in some examples. A few examples are analyzed graphically for different values of the number of units in the subnet and the number of subnets. This paper contains four different network topology models which are also analyzed by equations and graphically. The mathematical model described and the deduced equations will serve as a basis for the subsequent analysis of the dynamic networks of various topologies and various types of random variables that describe the lifetimes of the units of the analyzed system.https://jes.utm.md/wp-content/uploads/sites/20/2023/01/JES-4-2022_17-26.pdfcumulative distribution functiondistributionsglobal maximumlifetimesurvival functions
spellingShingle ANDRIEVSCHI-BAGRIN, Veronica
LEAHU, Alexei
RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITS
Journal of Engineering Science (Chişinău)
cumulative distribution function
distributions
global maximum
lifetime
survival functions
title RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITS
title_full RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITS
title_fullStr RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITS
title_full_unstemmed RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITS
title_short RELIABILITY OF SERIAL-PARALLEL NETWORKS VS RELIABILITY OF PARALLELSERIAL NETWORKS WITH CONSTANT NUMBERS OF SUB-NETWORKS AND UNITS
title_sort reliability of serial parallel networks vs reliability of parallelserial networks with constant numbers of sub networks and units
topic cumulative distribution function
distributions
global maximum
lifetime
survival functions
url https://jes.utm.md/wp-content/uploads/sites/20/2023/01/JES-4-2022_17-26.pdf
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