| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | sid.inpe.br/marciana/2004/01.19.11.33 |
| Last Update | 2004:04.01.03.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/marciana/2004/01.19.11.33.26 |
| Metadata Last Update | 2018:06.05.01.20.50 (UTC) administrator |
| Secondary Key | INPE-10542-PRE/6014 |
| ISBN/ISSN | ISBN 85-288-0040-7 |
| Citation Key | ChiwiacowskyCampPretStep:2003:PaAp |
| Title | Identifying initial condition in heat conduction transfer by a genetic algorithm: a parallel approach  |
| Year | 2003 |
| Access Date | 2024, May 17 |
| Secondary Type | PRE CI |
| Number of Files | 1 |
| Size | 185 KiB |
| 2. Context | |
| Author | 1 Chiwiacowsky, L. D. 2 Campos Velho, Haroldo Fraga de 3 Preto, Airam Jônatas 4 Stephany, Stephan |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JHC3 3 8JMKD3MGP5W/3C9JGGE 4 8JMKD3MGP5W/3C9JJ9D |
| Group | 1 LAC-INPE-MCT-BR |
| Conference Name | Iberian Latin-American Congress on Computational Methods in Engineering, 24 (CILAMCE). |
| Conference Location | Ouro Preto |
| Date | 29 - 31 Oct. 2003 |
| Book Title | Proceedings |
| History (UTC) | 2018-06-05 01:20:50 :: administrator -> marciana :: 2003 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | parallel genetic algorithms inverse problems heat conduction |
| Abstract | A parallel implementation of a genetic algorithm is proposed to solve the one-dimensional inverse heat conduction problem of determining the initial temperature distribution from the transient temperature noisy profile at a given time, considering insulated boundary conditions. Genetic algorithms are efficient search methods based on natural and genetic selection of population being inherently parallel [1]. This ill-posed problem requires the use of a regularization technique [2]. The solution is given by the candidate function which minimizes the functional given by the square differences between the experimental and simulated temperatures at a given time, plus the regularization term weighted by a regularization parameter. Therefore, this inverse problem is formulated as an optimization problem, which is solved by a parallel implementation of a specifically developed genetic algorithm method. This proposed method is based on individuals with genotypes formed by a set of real numbers [3]. The parallel code was generated using calls to the message passing communication library MPI (Message Passing Interface) [4]. Usually, parallel genetic algorithms work with sub-populations (demes) which are placed on each processor and it was used the migration policy given by the island model [5], In such model, individuals are free to migrate to any other processor, subjected to specific rules. The inversions were accomplished for two different population sizes (336 and 1008), being the individuals equally distributed among the processors. Number of processors was 2 to 16, and processing times show efficiencies between 0.9 and 1.14 for the 1008 individuals and between 0.83 and 0.89 for 336 individuals. |
| Area | COMP |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAC > Identifying initial condition... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/sid.inpe.br/marciana/2004/01.19.11.33 |
| zipped data URL | http://urlib.net/zip/sid.inpe.br/marciana/2004/01.19.11.33 |
| Language | en |
| Target File | cil261-37.pdf |
| User Group | administrator |
| Visibility | shown |
| Copy Holder | SID/SCD |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ESGTTP |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.49.40 7 sid.inpe.br/mtc-m21/2012/07.13.14.39.30 5 |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | affiliation archivingpolicy archivist callnumber copyright creatorhistory descriptionlevel dissemination documentstage doi e-mailaddress edition editor electronicmailaddress format identifier isbn issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url versiontype volume |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |