Examinando por Autor "Zuluaga-Holguín, D."
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Ítem Experts' Agreement Support for Distributed Engineering Knowledge Modelling(Springer Verlag, 2013-01-01) Mejía-Gutiérrez, R.; Cálad-Álvarez, A.; Zuluaga-Holguín, D.Knowledge sharing among partners in collaborative and concurrent engineering processes is becoming more critical for decision-making in Product Design Engineering (PDE). The approach presented in this article proposes a Fuzzy Logic (FL) based semi-automatic support for reaching agreements in the definition of variable's domain under a Constraint Satisfaction Problem (CSP) modelling process. A negotiation model is proposed, including suggestions about preferred domains for a variable that it is used for more than one expert. Competence of the users involved in the negotiation is measured with a set of developed indexes. A Fuzzy Inference System (FIS) is used to calculate user's indexes and suggestions about the domain are made based on the proposed domains and competence index of the experts. The proposal is included in a Multi-Agent System (MAS) for supporting distributed knowledge modelling. © Springer-Verlag Berlin Heidelberg 2013.Ítem A fuzzy negotiation model to assign variable's domain in constraint satisfaction problems: An agent based collaborative engineering modeling case(IOS PRESS, 2012-01-01) Mejía-Gutiérrez, R.; Cálad-Álvarez, A.; Zuluaga-Holguín, D.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)Knowledge sharing among partners from a distributed engineering team is becoming more critical for decision making. The work presented in this article proposes to support users of an agent based application for collaborative product design, during the definition of an engineering problem under a Constraint Satisfaction Problem (CSP) approach. The scope of this work covers the domains definition for variables from the CSP distributed model. A semiautomatic negotiation model is proposed in order to give users suggestions about a preferred domain for a variable that is used for more than one expert. A set of quantitative indexes measure the competence that users have over variables in the model, helping the system in decision making. A fuzzy inference system is used to calculate user's competence index and suggestions are made based on a fuzzy approach in order to achieve trade-offs in collaborative domains definition. © 2012 The authors and IOS Press. All rights reserved.Ítem A systems-engineering approach for virtual/real analysis and validation of an automated greenhouse irrigation system(Springer-Verlag France, 2016-11-01) Carvajal-Arango, R.; Zuluaga-Holguín, D.; Mejía-Gutiérrez, R.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)In the context of multidisciplinary complex systems design, modelling and simulation are key components in decision making. It allow engineers to validate design alternatives at early development stages. Consequently, it is possible to reduce uncertainty on requirements compliance and secure better decisions for downstream stages of product development. This article describes the analysis of a virtual prototype of an automated greenhouse irrigation system. It is modelled and compared with the real system implementation, finding some differences and similarities between both system testing approaches. The intrinsic dependence of experimentation and modelling is also discussed as both, experimental and random data, are important to be used as inputs to validate virtual models.