Now showing items 1-20 of 283

    • Valorization of agri-food waste through the extraction of bioactive molecules. Prediction of their sunscreen action 

      Martínez Inda, Blanca Upna; Esparza Catalán, Irene Upna; Moler Cuiral, José Antonio Upna Orcid; Jiménez Moreno, Nerea Upna Orcid; Ancín Azpilicueta, Carmen Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      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 ...
    • 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 Upna Orcid; Palacián Subiela, Jesús Francisco Upna Orcid; San Segundo, A.; Ávila, D.; Tosar, B.; Gómez-Hernández, A.; Gómez-Martínez, Juan; García, Antonio; Aimee, A. I. (MeteorNews, 2023)   Artículo / Artikulua  OpenAccess
      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 Upna Orcid; Palacián Subiela, Jesús Francisco Upna Orcid; San Segundo, A.; Ávila, D.; Tosar, B.; Gómez-Hernández, A.; Gómez-Martínez, Juan; García, Antonio; Aimee, A. I. (MeteorNews, 2023)   Artículo / Artikulua  OpenAccess
      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 ...
    • A multi-splitting method to solve 2D parabolic reaction-diffusion singularly perturbed systems 

      Clavero, Carmelo; Jorge Ulecia, Juan Carlos Upna Orcid (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 ...
    • Achieving transfer from mathematics learning 

      Orón, José Víctor; Lizasoain Iriso, María Inmaculada Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      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 ...
    • 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 Upna Orcid; Astrain Escola, José Javier Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      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 ...
    • Quasi-metrics for possibility results: intergenerational preferences and continuity 

      Estevan Muguerza, Asier Upna Orcid; Maura, Roberto; Valero, Óscar (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      In this paper, we provide the counterparts of a few celebrated impossibility theorems for continuous social intergenerational preferences according to P. Diamond, L.G. Svensson and T. Sakai. In particular, we give a topology ...
    • Designing experiments for estimating an appropriate outlet size for a silo type problem 

      López Fidalgo, Jesús; May, Caterina; Moler Cuiral, José Antonio Upna Orcid (Institute of Mathematical Statistics, 2023)   Artículo / Artikulua  OpenAccess
      Jam formation is a problem that may occur when granular material is discharged by gravity from a silo. The estimation of the minimum outlet size, which guarantees that the time to the next jamming event is long enough, can ...
    • Cohort Profile: CArdiovascular Risk in patients with DIAbetes in NAvarra (CARDIANA cohort) 

      Tamayo Rodríguez, Ibai; Librero, Julián; Galbete Jiménez, Arkaitz Upna Orcid; Cambra Contin, Koldo; Enguita Germán, Mónica; Forga, Lluís; Goñi, María José; Lecea, Óscar; Gorricho, Javier; Olazarán Santesteban, Álvaro; Arnedo Ajona, Laura Upna Orcid; Moreno Iribas, C.; Lafita, Javier; Ibáñez Beroiz, Berta (BMJ, 2023)   Artículo / Artikulua  OpenAccess
      Purpose The CArdiovascular Risk in patients with DIAbetes in Navarra (CARDIANA cohort) cohort was established to assess the effects of sociodemographic and clinical variables on the risk of cardiovascular events ...
    • Projections of lung cancer incidence by 2035 in 40 countries worldwide: population-based study 

      Luo, Ganfeng; Zhang, Yanting; Etxeberria Andueza, Jaione Upna Orcid; Arnold, Melina; Cai, Xiuyu; Hao, Yuantao; Zou, Huachun (JMIR Public Health and Surveillance, 2023)   Artículo / Artikulua  OpenAccess
      Background: The global burden of lung cancer (LC) is increasing. Quantitative projections of the future LC burden in different world regions could help optimize the allocation of resources and provide a benchmark for ...
    • Bidemocratic bases and their connections with other greedy-type bases 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, José L.; Berasategui, Miguel; Berná, Pablo M.; Lassalle, Silvia (Springer, 2023)   Artículo / Artikulua  OpenAccess
      In nonlinear greedy approximation theory, bidemocratic bases have traditionally played the role of dualizing democratic, greedy, quasi-greedy, or almost greedy bases. In this article we shift the viewpoint and study them ...
    • On fuzzy implications derived from general overlap functions and their relation to other classes 

      Pinheiro, Jocivania; Santos, Helida; Pereira Dimuro, Graçaliz; Bedregal, Benjamin Upna Orcid; Santiago, Regivan; Fernández Fernández, Francisco Javier Upna Orcid; Bustince Sola, Humberto Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      There are distinct techniques to generate fuzzy implication functions. Despite most of them using the combination of associative aggregators and fuzzy negations, other connectives such as (general) overlap/grouping ...
    • From restricted equivalence functions on Ln to similarity measures between fuzzy multisets 

      Ferrero Jaurrieta, Mikel; Takác, Zdenko; Rodríguez Martínez, Iosu Upna Orcid; Marco Detchart, Cedric; Bernardini, Ángela; Fernández Fernández, Francisco Javier Upna Orcid; López Molina, Carlos Upna Orcid; Bustince Sola, Humberto Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      Restricted equivalence functions are well-known functions to compare two numbers in the interval between 0 and 1. Despite the numerous works studying the properties of restricted equivalence functions and their multiple ...
    • Solving vehicle routing problems under uncertainty and in dynamic scenarios: from simheuristics to agile optimization 

      Ammouriova, Majsa; Herrera, Erika M.; Neroni, Mattia; Juan, Ángel A.; Faulín Fajardo, Javier Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      Many real-life applications of the vehicle routing problem (VRP) occur in scenarios subject to uncertainty or dynamic conditions. Thus, for instance, traveling times or customers demands mightMany real-life applications ...
    • A splitting uniformly convergent method for one-dimensional parabolic singularly perturbed convection-diffusion systems 

      Clavero, Carmelo; Jorge Ulecia, Juan Carlos Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      In this paper we deal with solving robustly and efficiently one-dimensional linear parabolic singularly perturbed systems of convection-diffusion type, where the diffusion parameters can be different at each equation and ...
    • A convergent and asymptotic Laplace method for integrals 

      López García, José Luis Upna Orcid; Pagola Martínez, Pedro Jesús Upna; Palacios Herrero, Pablo Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      Watson’s lemma and Laplace’s method provide asymptotic expansions of Laplace integrals F (z) := ∫ ∞ 0 e −zf (t) g(t)dt for large values of the parameter z. They are useful tools in the asymptotic approximation of ...
    • Using publish/subscribe for message routing in mobile environments 

      Amozarrain Pérez, Ugaitz; Larrea, Mikel (Springer, 2023)   Artículo / Artikulua  OpenAccess
      Publish/subscribe is a mature communication paradigm to route and deliver events from publishers to interested subscribers. Initially conceived for large scale systems, e.g., the Internet, it has been used more recently ...
    • Solving the stochastic team orienteering problem: comparing simheuristics with the sample average approximation method 

      Panadero, Javier; Juan, Ángel A.; Ghorbani, Elnaz; Faulín Fajardo, Javier Upna Orcid; Pagès-Bernaus, Adela (Wiley, 2023)   Artículo / Artikulua  OpenAccess
      The team orienteering problem (TOP) is anNP-hardoptimization problem with an increasing number of po-tential applications in smart cities, humanitarian logistics, wildfire surveillance, etc. In the TOP, a fixed fleetof ...
    • An ontology-based system to avoid UAS flight conflicts and collisions in dense traffic scenarios 

      Martín Lammerding, David; Astrain Escola, José Javier Upna Orcid; Córdoba Izaguirre, Alberto; Villadangos Alonso, Jesús Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      New Unmanned Aerial Systems (UAS) applications will increase air traffic densities in metropolitan regions. Collision avoidance systems (CAS) are a key component in integrating a high number of UAS into the airspace in a ...
    • Big problems in spatio-temporal disease mapping: methods and software 

      Orozco Acosta, Erick Upna Orcid; Adin Urtasun, Aritz Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      Background and objective: Fitting spatio-temporal models for areal data is crucial in many fields such as cancer epidemiology. However, when data sets are very large, many issues arise. The main objective of this paper is ...