Listar Artículos de revista DEIM - EIMS Aldizkari artikuluak por fecha de publicación
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The uniform asymptotic method "saddle point near an end point" revisited
López García, José Luis
; Pagola Martínez, Pedro Jesús ; Palacios Herrero, Pablo (Elsevier, 2024)
We continue the program initiated in [López & all, 2009–2011] to simplify asymptotic methods for integrals: in this paper we revise the uniform method ‘‘saddle point near an end point’’. We obtain a more systematic version ... -
VTOL UAV digital twin for take-off, hovering and landing in different wind conditions
Aláez Gómez, Daniel; Olaz Moratinos, Xabier; Prieto Míguez, Manuel; Villadangos Alonso, Jesús ; Astrain Escola, José Javier (Elsevier, 2023)
Artículo / Artikulua
With UAVs becoming increasingly popular in the industry, vertical take-off and landing (VTOL) convertiplanes are emerging as a compromise between the advantages of planes and multicopters. Due to their large wing surface ... -
Asymptotic approximation of a highly oscillatory integral with application to the canonical catastrophe integrals
Ferreira González, Chelo; López García, José Luis ; Pérez Sinusía, Ester (Wiley, 2023)
Artículo / Artikulua
We consider the highly oscillatory integral 𝐹(𝑤) ∶= ∫ ∞ −∞ 𝑒𝑖𝑤(𝑡𝐾+2+𝑒𝑖𝜃𝑡𝑝) 𝑔(𝑡)𝑑𝑡 for large positive values of 𝑤, −𝜋 < 𝜃 ≤ 𝜋, 𝐾 and 𝑝 positive integers with 1 ≤ 𝑝 ≤ 𝐾, and 𝑔(𝑡) an entire function. ... -
Systematic review of aggregation functions applied to image edge detection
Amorim, Miqueias; Pereira Dimuro, Graçaliz ; Borges, Eduardo N.; Dalmazo, Bruno L.; Marco Detchart, Cedric ; Lucca, Giancarlo; Bustince Sola, Humberto (MDPI, 2023)
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Edge detection is a crucial process in numerous stages of computer vision. This field of study has recently gained momentum due to its importance in various applications. The uncertainty, among other characteristics of ... -
Acuity-based rotational patient-to-physician assignment in an emergency department using electronic health records in triage
Cildoz Esquíroz, Marta ; Ibarra Bolt, Amaya; Mallor Giménez, Fermín (SAGE, 2023)
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Emergency department (ED) operational metrics generated by a new acuity-based rotational patient-to-physician assignment (ARPA) algorithm are compared with those obtained with a simple rotational patient assignment (SRPA) ... -
Hierarchical spatio-temporal change-point detection
Moradi, Mohammad Mehdi ; Cronie, Ottmar; Pérez Goya, Unai ; Mateu, Jorge (Taylor and Francis Group, 2023)
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Detecting change-points in multivariate settings is usually carried out by analyzing all marginals either independently, via univariate methods, or jointly, through multivariate approaches. The former discards any inherent ... -
A multistate model and its standalone tool to predict hospital and ICU occupancy by patients with COVID-19
Lafuente, Miguel; López, Francisco Javier; Mateo, Pedro; Cebrián, Ana Carmen; Asín, Jesús; Moler Cuiral, José Antonio ; Borque-Fernando, Ángel; Esteban, Luis Mariano; Pérez-Palomares, Ana; Sanz, Gerardo (Elsevier, 2023)
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Objective: This study aims to build a multistate model and describe a predictive tool for estimating the daily number of intensive care unit (ICU) and hospital beds occupied by patients with coronavirus 2019 disease ... -
Valorization of agri-food waste through the extraction of bioactive molecules. Prediction of their sunscreen action
Martínez Inda, Blanca; Esparza Catalán, Irene ; Moler Cuiral, José Antonio ; Jiménez Moreno, Nerea ; Ancín Azpilicueta, Carmen (Elsevier, 2023)
Artículo / Artikulua
The aim of this work was to identify the phenolic composition of 18 different vegetable residues and to determine the relationship between their phenolic compounds, antioxidant capacity and sun protection factor. For ... -
Las funciones docentes: su enseñanza y aprendizaje en los grados en maestro
Belletich Ruiz, Olga ; Rodríguez Wilhelmi, Miguel (GKA Ediciones, 2023)
Artículo / Artikulua
La experiencia docente universitaria en los Grados en Maestro demuestra que existen obstáculos didácticos para la enseñanza y aprendizaje de las competencias asociadas a las funciones y prácticas docentes requeridas en la ... -
Space mission risk, sustainability and supply chain: review, multi-objective optimization model and practical approach
(MDPI, 2023) Artículo / Artikulua
This paper investigates the convergence of risk, sustainability, and supply chain in space missions, including a review of fundamental concepts, the introduction of a multi-objective conceptual optimization model, and ... -
Analysis of bright bolides recorded between October and November 2022 by the Southwestern Europe Meteor Network
Madiedo, J. M.; Ortiz, J. L.; Izquierdo, J.; Santos-Sanz, P.; Aceituno, J.; Guindos, E. de; Yanguas Sayas, Patricia ; Palacián Subiela, Jesús Francisco ; San Segundo, A.; Ávila, D.; Tosar, B.; Gómez-Hernández, A.; Gómez-Martínez, Juan; García, Antonio; Aimee, A. I. (MeteorNews, 2023)
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We present in this work the analysis of some of the bright fireballs spotted in the framework of the Southwestern Europe Meteor Network (SWEMN) between October and November 2022. They have been observed from the Iberian ... -
High-dimensional order-free multivariate spatial disease mapping
Vicente Fuenzalida, Gonzalo; Adin Urtasun, Aritz ; Goicoa Mangado, Tomás; Ugarte Martínez, María Dolores (Springer, 2023)
Artículo / Artikulua
Despite the amount of research on disease mapping in recent years, the use of multivariate models for areal spatial data remains limited due to difficulties in implementation and computational burden. These problems are ... -
Measures of embedding for interval-valued fuzzy sets
Bouchet, Agustina; Sesma Sara, Mikel ; Ochoa Lezaun, Gustavo ; Bustince Sola, Humberto ; Montes, Susana; Díaz, Irene (Elsevier, 2023)
Artículo / Artikulua
Interval-valued fuzzy sets are a generalization of classical fuzzy sets where the membership values are intervals. The epistemic interpretation of interval-valued fuzzy sets assumes that there is one real-valued membership ... -
The ideal of Lesieur-Croisot elements of Jordan pairs
Montaner, Fernando; Paniello Alastruey, Irene (Taylor and Francis Group, 2023)
Artículo / Artikulua
We study the sets of elements of Jordan pairs whose local Jordan algebras are Lesieur-Croisot algebras, that is, classical orders in nondegenerate Jordan algebras with finite capacity. It is then proved that, if the Jordan ... -
Association of intrinsic capacity with incidence and mortality of cardiovascular disease: prospective study in UK Biobank
Ramírez Vélez, Robinson; Iriarte-Fernández, María; Santafé Rodrigo, Guzmán ; Malanda Trigueros, Armando ; Beard, John R.; García Hermoso, Antonio; Izquierdo Redín, Mikel (Wiley, 2023)
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Background: The World Health Organization proposed the concept of intrinsic capacity (IC; the composite of all the physical and mental capacities of the individual) as central for healthy ageing. However, little research ... -
Quadcopter neural controller for take-off and landing in windy environments
Olaz Moratinos, Xabier; Aláez Gómez, Daniel; Prieto Míguez, Manuel; Villadangos Alonso, Jesús ; Astrain Escola, José Javier (Elsevier, 2023)
Artículo / Artikulua
This paper proposes the design of a quadcopter neural controller based on Reinforcement Learning (RL) for controlling the complete maneuvers of landing and take-off, even in variable windy conditions. To facilitate RL ... -
On the notion of fuzzy dispersion measure and its application to triangular fuzzy numbers
Roldán López de Hierro, Antonio Francisco; Bustince Sola, Humberto ; Rueda, María del Mar; Roldán, Concepción; Miguel Turullols, Laura de ; Guerra, Carlos (Elsevier, 2023)
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In this paper, based on the analysis of the most widely used dispersion measure in the real context (namely, the variance), we introduce the notion of fuzzy dispersion measure associated to a finite set of data given by ... -
Generalizing max pooling via (a, b)-grouping functions for convolutional neural networks
Rodríguez Martínez, Iosu ; Asmus, Tiago ; Pereira Dimuro, Graçaliz ; Herrera, Francisco; Takáč, Zdenko; Bustince Sola, Humberto (Elsevier, 2023)
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Due to their high adaptability to varied settings and effective optimization algorithm, Convolutional Neural Networks (CNNs) have set the state-of-the-art on image processing jobs for the previous decade. CNNs work in a ... -
An enhanced approach to virtually increase quasi-stationarity regions within geometric channel models for vehicular communications
Rodríguez Corbo, Fidel Alejandro; Celaya Echarri, Mikel ; Shubair, Raed M.; Falcone Lanas, Francisco Javier ; Azpilicueta Fernández de las Heras, Leyre (IEEE, 2023)
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Vehicular communication channels are intrinsically non-stationary, as they present high mobility and abundant dynamic scatterers. Quasi-stationary regions can assess the degree of non-stationarity within a determined ... -
Novel multivariate methods to track frequency shifts of neural oscillations in EEG/MEG recordings
Vidaurre, Carmen ; Gurunandan, Kshipra; Jamshidi Idaji, Mina; Nolte, Guido; Gómez Fernández, Marisol ; Villringer, Arno; Müller, Klaus Robert; Nikulin, Vadim V. (Elsevier, 2023)
Artículo / Artikulua
Instantaneous and peak frequency changes in neural oscillations have been linked to many perceptual, motor, and cognitive processes. Yet, the majority of such studies have been performed in sensor space and only occasionally ...
