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IPS - ESTB - SEG - Artigos científicos

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http://hdl.handle.net/10400.26/3760

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Browsing IPS - ESTB - SEG - Artigos científicos by Author "Almeida, Maria do Céu"

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  • Multi-criteria decision analysis in urban water asset management
    Publication . Carriço, Nelson; Covas, Dídia; Almeida, Maria do Céu
    This paper presents a multi-criteria decision support methodology for selection and prioritization of rehabilitation intervention in urban water infrastructures considering performance, cost and risk and a long-term perspective. This methodology is divided into three main stages: problem identification, structuring and evaluation. Problem structuring, a crucial stage for the outcomes, includes identifying objectives, selecting scenarios within the analysis period, defining problem options and the problematic type. Problem evaluation includes the selection of assessment metrics, selection of the aggregation method, application of the method and sensitivity and robustness analysis and final recommendations. The methodology is applied to a real case study of a water distribution system, being the different stages presented in detail and obtained results discussed.
    2021Journal article Restricted access Show more
  • Rehabilitation of an industrial water main using multicriteria decision analysis
    Publication . Carriço, Nelson; Covas, Dídia; Almeida, Maria do Céu
    This paper demonstrates the application of multicriteria decision analysis (MCDA) method- ology in a real case study aiming to choose the best rehabilitation intervention of an industrial water main. This methodology is composed of three main stages: problem identification, structuring, and evaluation. Problem structuring, a crucial stage for the outcomes, includes identifying objec- tives, selecting scenarios within the analysis period, defining problem alternatives, and defining the problematic type. Problem evaluation includes the selection of assessment metrics, selection of the aggregation method, application of the method, and a sensitivity and robustness analysis. Two scenarios, nine assessment metrics, and seven alternatives are established, and two ranking methods (the additive model and ELECTRE III method) are used to compare the alternatives. The results show that the best solution corresponds to building a new pipe and deactivating the existing one, as it significantly reduces the pipe failure risk and O&M costs, whereas the worst solution is always the status quo case, since it is the only alternative that does not improve the system performance, independently of the ranking method and the analyzed scenario
    2021Journal article Open access Show more