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Listar por autor "Benítez López, Julio"

Mostrando ítems 1-20 de 100

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A decision support system to assure high-performance maintenance service

Aiello, Giuseppe; Benítez López, Julio; Carpitella, Silvia; Certa, Antonella; Enea, Mario; Izquierdo Sebastián, Joaquín; La Cascia, Marco (Emerald, 2021-10-26)

[EN] Purpose This study aims to propose a decision support system (DSS) for maintenance management of a service system, namely, a street cleaning service vehicle. Referring to the information flow management, the blockchain ...
A hybrid multicriteria approach to GPR image mining applied to water supply system maintenance

Carpitella, Silvia; Ocaña-Levario, Silvia Janeth; Benítez López, Julio; Certa, A.; Izquierdo Sebastián, Joaquín (Elsevier, 2018)

[EN] Data processing techniques for Ground Penetrating Radar (GPR) image mining provide essential information to optimize maintenance management of Water Supply Systems (WSSs). These techniques aim to elaborate on radargrams ...
A projective invariant generalization of the de Casteljau algorithm

Benítez López, Julio (Elsevier, 2011-01)

A projective invariant generalization of the de Casteljau algorithm is described by using the cross ratio and an auxiliary line. We describe the implicit form of the section conics obtained by the algorithm proposed in ...
A risk evaluation framework for the best maintenance strategy: the case of a marine salt manufacture firm

Carpitella, Silvia; Mzougui, Ilyas; Benítez López, Julio; Carpitella, Fortunato; Certa, Antonella; Izquierdo Sebastián, Joaquín; La Cascia, Marco (Elsevier, 2021-01)

[EN] This paper intends to contribute with a multi-criteria decision-making (MCDM) framework to support risk evaluation for maintenance activities carried out on critical systems in industry. We propose to first select the ...
A short proof of a matrix decomposition with applications

Benítez López, Julio; Liu, Xiaoji (Elsevier, 2013-02-01)

We give a very short proof of the main result of J. Benitez, A new decomposition for square matrices, Electron. J. Linear Algebra 20 (2010) 207-225. Also, we present some consequences of this result. (C) 2012 Elsevier Inc. ...
A simple formula to find the closest consistent matrix to a reciprocal matrix

Benítez López, Julio; Izquierdo Sebastián, Joaquín; Pérez García, Rafael; Ramos Martínez, Eva (Elsevier, 2014-08-01)

Achieving consistency in pair-wise comparisons between decision elements given by experts or stakeholders is of paramount importance in decision-making based on the AHP methodology. Several alternatives to improve consistency ...
Achieving matrix consistency in AHP through linearization

Benítez López, Julio; Delgado Galván, Xitlali Virginia; Izquierdo Sebastián, Joaquín; Pérez García, Rafael (Elsevier, 2011-09)

Matrices used in the analytic hierarchy process (AHP) compile expert knowledge as pair-wise comparisons among various criteria and alternatives in decision-making problems. Many items are usually considered in the same ...
Additive results for the group inverse in an algebra with applications to block operators

Benítez López, Julio; Liu, Xiaoji; Zhu, Tongping (Taylor & Francis, 2011)

We derive a very short expression for the group inverse of a(1) + ... + a(n) when a(1), ... , a(n) are elements in an algebra having group inverse and satisfying a(i)a(j) = 0 for i < j. We apply this formula in order to ...
AHP y teoría de grafos

Serra Jiménez, Carlos Alberto (Universitat Politècnica de València, 2024-09-09)

[ES] AHP (Analytic Hierarchy Process) es una técnica de decisión multicriterio con una fuerte base matematica. Hay muchos problemas dentro de esta teoría que se pueden plantear y resolver usando la teoría de ...
Ajuste y calibración, con la llegada de nuevos datos, de un modelo epidemiológico simple

Benítez López, Julio; Carpitella, Silvia; Izquierdo Sebastián, Joaquín (Universitat Politècnica de València, 2020-05-26)

Los denominados sistemas dinámicos están presentes en cualquier ámbito evolutivo. Modelos matemáticos adecuados (físicos, sociales, económicos, biológicos, etc.) constituyen un laboratorio `in vitro¿ de tales sistemas, que ...
Alma algebraica en la toma de decisiones

Izquierdo Sebastián, Joaquín; Carpitella, Silvia; Benítez López, Julio (2024-05-08)

Algunos sistemas de toma de decisiones, especialmente con elementos subjetivos, utilizan comparación dos a dos de los elementos involucrados. En general, la comparación dos a dos está prácticamente siempre sujeta a ...
An approach to AHP decision in a dynamic context

Benítez López, Julio; Delgado Galván, Xitlali Virginia; Izquierdo Sebastián, Joaquín; Pérez García, Rafael (Elsevier, 2012-06)

AHP (analytic hierarchy process) is used to construct coherent aggregate results from preference data provided by decision makers. Pairwise comparison, used by AHP, shares a common weakness with other input formats used ...
Aplicación del método de las jerarquías analíticas para la toma de decisiones participativa en la gestión de fugas en redes de abastecimiento de agua

Carrión Sánchez, Laura (Universitat Politècnica de València, 2014-06-06)

[ES] Adoptar un enfoque proactivo en la toma de decisiones es fundamental en las políticas de control de fugas de un abastecimiento de agua urbana. Cada vez es más importante que intervengan todas las partes implicadas. ...
Balancing consistency and expert judgment in AHP

Benítez López, Julio; Delgado Galván, Xitlali Virginia; Gutiérrez-Pérez, Joanna A.; Izquierdo Sebastián, Joaquín (Elsevier, 2011-10)

The various mechanisms that represent the know-how of decision-makers are exposed to a common weakness, namely, a lack of consistency. To overcome this weakness within AHP (analytic hierarchy process), we propose a framework ...
Canonical angles and limits of sequences of EP and co-EP matrices

Benítez López, Julio; Rakocevic, Vladimir (Elsevier, 2012-05-01)

Let A be a square complex matrix. Let P be one of the following properties: (a) A is an EP matrix, (b) the column space of A is complementary to the column space of A, and (c) the orthogonal complement of the column space ...
Centralizer's applications to the (b, c)-inverses in rings

Xu, Sanzhang; Chen, Jianlong; Benítez López, Julio; Wang, Dingguo (Real Academia de Ciencias Exactas, Físicas y Naturales, 2019-07)

[EN] We give several conditions in order that the absorption law for one sided (b,c)-inverses in rings holds. Also, by using centralizers, we obtain the absorption law for the (b,c)-inverse and the reverse order law of the ...
Characterisation of the consistent completion of AHP comparison matrices using graph theory

Benítez López, Julio; Carpitella, Silvia; Certa, A.; Izquierdo Sebastián, Joaquín (John Wiley & Sons, 2019-01)

[EN] Decision-making is frequently affected by uncertainty and/or incomplete information, which turn decision-making into a complex task. It is often the case that some of the actors involved in decision-making are not ...
Characterization of consistent completion of reciprocal comparison matrices

Benítez López, Julio; Carrión, Laura; Izquierdo Sebastián, Joaquín; Pérez García, Rafael (Hindawi Publishing Corporation, 2014-02-25)

Analytic hierarchy process (AHP) is a leading multi-attribute decision-aiding model that is designed to help make better choices when faced with complex decisions involving several dimensions. AHP, which enables qualitative ...
Co-EP Banach algebra elements

Benítez López, Julio; Boasso, E.; Rakocevic, V. (Tusi Mathematical Research Group, 2015)

[EN] In this work, given a unital Banach algebra A and a \in A such that a has a Moore-Penrose inverse a^+, it will be characterized when a^+ a - a a^+ is invertible. A particular subset of this class of objects wil also ...
Consistent Clustering of Elements in Large Pairwise Comparison Matrices

Benítez López, Julio; Carpitella, Silvia; Certa, A.; Ilaya-Ayza, Amilkar Ernesto; Izquierdo Sebastián, Joaquín (Elsevier, 2018)

[EN] In multi-attribute decision making the number of decision elements under consideration may be huge, especially for complex, real-world problems. Typically these elements are clustered and then the clusters organized ...