Listar Artículos de revista DEIM - EIMS Aldizkari artikuluak por fecha de publicación
Mostrando ítems 21-40 de 369
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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 ... -
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)
Artículo / Artikulua
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 ... -
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)
Artículo / Artikulua
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 ... -
Association of intrinsic capacity with respiratory disease mortality
Ramírez Vélez, Robinson; Iriarte-Fernández, María; Santafé Rodrigo, Guzmán ; Malanda Trigueros, Armando ; Beard, John R.; García Hermoso, Antonio; Izquierdo Redín, Mikel (Elsevier, 2023)
Artículo / Artikulua
The World Health Organization (WHO) introduced a framework for healthy aging in 2015 that emphasizes functional ability instead of absence of disease. Healthy ageing is defined as “the process of building and maintaining ... -
Semiorders and continuous Scott–Suppes representations. Debreu’s Open Gap Lemma with a threshold
Estevan Muguerza, Asier (Elsevier, 2023)
Artículo / Artikulua
The problem of finding a utility function for a semiorder has been studied since 1956, when the notion of semiorder was introduced by Luce. But few results on continuity and no result like Debreu’s Open Gap Lemma, but for ... -
Achieving transfer from mathematics learning
Orón, José Víctor; Lizasoain Iriso, María Inmaculada (MDPI, 2023)
Artículo / Artikulua
The question of transfer is a special challenge in mathematics teaching because the wide range and fragmentation of the curricula have in many cases fostered an instrumental understanding, which makes transfer difficult ... -
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)
Artículo / Artikulua
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 ... -
The Southwestern Europe Meteor Network: notable meteors spotted between December 2022 and January 2023
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)
Artículo / Artikulua
We present in this report the analysis of some of the notable meteors registered in the framework of the Southwestern Europe Meteor Network between December 2022 and January 2023. These were recorded from Spain. Their peak ... -
Uniform convergent expansions of the error function in terms of elementary functions
Ferreira González, Chelo; López García, José Luis ; Pérez Sinusía, Ester (Springer, 2023)
Artículo / Artikulua
We derive a new analytic representation of the error function erfz in the form of a convergent series whose terms are exponential and rational functions. The expansion holds uniformly in z in the double sector | arg (±z) ... -
Sparse approximation using new greedy-like bases in superreflexive spaces
Albiac Alesanco, Fernando José ; Ansorena, José L.; Berasategui, Miguel (Instytut Matematyczny, 2023)
Artículo / Artikulua
This paper is devoted to theoretical aspects of optimality of sparse approximation. We undertake a quantitative study of new types of greedy-like bases that have recently arisen in the context of non-linear m-term approximation ... -
Robots for elderly care: review, multi-criteria optimization model and qualitative case study
Sawik, Bartosz; Tobis, Sławomir; Baum, Ewa; Suwalska, Aleksandra; Kropińska, Sylwia; Stachnik, Katarzyna; Pérez-Bernabeu, Elena; Cildoz Esquíroz, Marta ; Agustín Martín, Alba; Wieczorowska-Tobis, Katarzyna. (MDPI, 2023)
Artículo / Artikulua
This paper focuses on three areas: the first is a review of current knowledge about social and service robots for elderly care. The second is an optimization conceptual model aimed at maximizing the efficiency of assigning ... -
A multi-splitting method to solve 2D parabolic reaction-diffusion singularly perturbed systems
Clavero, Carmelo; Jorge Ulecia, Juan Carlos (Elsevier, 2023)
Artículo / Artikulua
In this paper we design and analyze a numerical method to solve a type of reaction-diffusion 2D parabolic singularly perturbed systems. The method combines the central finite difference scheme on an appropriate piecewise ... -
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 ... -
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 ... -
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. ... -
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)
Artículo / Artikulua
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 ... -
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)
Artículo / Artikulua
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) ... -
Quantifying external information in social network analysis: an application to comparative mythology
Fumanal Idocin, Javier ; Cordón García, Óscar; Pereira Dimuro, Graçaliz ; Roldán López de Hierro, Antonio Francisco; Bustince Sola, Humberto (IEEE, 2023)
Artículo / Artikulua
Social network analysis is a popular tool to understand the relationships between interacting agents by studying the structural properties of their connections. However, this kind of analysis can miss some of the domain-specific ...
