• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • Tagged with
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Contribui??o ao desenvolvimento de ontologias para processos petroqu?micos : estudo de caso em uma planta DEA

Diniz, Anthony Andrey Ramalho 03 September 2010 (has links)
Made available in DSpace on 2014-12-17T14:08:41Z (GMT). No. of bitstreams: 1 AnthonyARD_DISSERT.pdf: 2982432 bytes, checksum: 71a6d988a19819a67932642761ac3dda (MD5) Previous issue date: 2010-09-03 / In the last decades, the oil, gas and petrochemical industries have registered a series of huge accidents. Influenced by this context, companies have felt the necessity of engaging themselves in processes to protect the external environment, which can be understood as an ecological concern. In the particular case of the nuclear industry, sustainable education and training, which depend too much on the quality and applicability of the knowledge base, have been considered key points on the safely application of this energy source. As a consequence, this research was motivated by the use of the ontology concept as a tool to improve the knowledge management in a refinery, through the representation of a fuel gas sweetening plant, mixing many pieces of information associated with its normal operation mode. In terms of methodology, this research can be classified as an applied and descriptive research, where many pieces of information were analysed, classified and interpreted to create the ontology of a real plant. The DEA plant modeling was performed according to its process flow diagram, piping and instrumentation diagrams, descriptive documents of its normal operation mode, and the list of all the alarms associated to the instruments, which were complemented by a non-structured interview with a specialist in that plant operation. The ontology was verified by comparing its descriptive diagrams with the original plant documents and discussing with other members of the researchers group. All the concepts applied in this research can be expanded to represent other plants in the same refinery or even in other kind of industry. An ontology can be considered a knowledge base that, because of its formal representation nature, can be applied as one of the elements to develop tools to navigate through the plant, simulate its behavior, diagnose faults, among other possibilities / Nas ?ltimas d?cadas, o segmento de ?leo & g?s e petroqu?mica tem registrado uma s?rie de grandes acidentes. Influenciadas por esse contexto, as empresas tem sentido a necessidade de se engajar em processos de prote??o do ambiente externo, que se traduz na preocupa??o ecol?gica. No caso particular da ind?stria nuclear mundial, a educa??o sustent?vel e o treinamento, que dependem muito da qualidade e utilidade da base de conhecimento, t?m sido considerados pontos chave para utiliza??o desse tipo de energia com seguran?a. Dessa forma, a motiva??o dessa pesquisa foi aplicar o conceito de ontologia como ferramenta para melhorar a gest?o do conhecimento em uma refinaria, atrav?s da representa??o de uma planta de ado?amento de g?s combust?vel, condensando os v?rios tipos informa??es associados com o seu modo de opera??o normal. Em termos de metodologia, este estudo pode ser classificado como uma pesquisa aplicada e descritiva, em que foram analisadas, classificadas e interpretadas informa??es que possibilitaram criar a ontologia descritiva de uma planta real. A modelagem da planta DEA foi realizada de acordo com os fluxogramas de processo, fluxogramas de tubula??o e instrumenta??o, documentos descritivos de seu modo de opera??o e a rela??o de alarmes associados, que foram complementadas com uma entrevista n?o estruturada de um especialista em seu modo de opera??o. A valida??o aconteceu atrav?s da compara??o de grafos montados a partir da ontologia com a documenta??o original e debatidos com o grupo de trabalho. Os conceitos utilizados nesta pesquisa podem ser expandidos para representar outras plantas da pr?pria refinaria ou mesmo de outras ind?strias. A ontologia pode ser considerada uma base de conhecimento, que devido ao seu car?ter formal, pode ser aplicada como um dos elementos no desenvolvimento de ferramentas de navega??o da planta, simula??o de comportamento, diagn?stico de falhas, dentre outras possibilidades

Page generated in 0.0127 seconds