Recent Submissions

  • The uniform asymptotic method "saddle point near an end point" revisited 

    López García, José Luis Upna Orcid; Pagola Martínez, Pedro Jesús Upna; Palacios Herrero, Pablo Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
    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 ...
  • A simplified spatial+ approach to mitigate spatial confounding in multivariate spatial areal models 

    Urdangarin Iztueta, Arantxa; Goicoa Mangado, Tomás; Kneib, Thomas; Ugarte Martínez, María Dolores Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
    Spatial areal models encounter the well-known and challenging problem of spatial confounding. This issue makes it arduous to distinguish between the impacts of observed covariates and spatial random effects. Despite previous ...
  • Admissible OWA operators for fuzzy numbers 

    García-Zamora, Diego; Cruz, Anderson; Neres, Fernando; Santiago, Regivan; Roldán López de Hierro, Antonio Francisco; Paiva, Rui; Dimuro, Graçaliz P.; Martínez López, Luis; Bedregal, Benjamin Upna Orcid; Bustince Sola, Humberto Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
    Ordered Weighted Averaging (OWA) operators are some of the most widely used aggregation functions in classic literature, but their application to fuzzy numbers has been limited due to the complexity of defining a total ...
  • Supervised penalty-based aggregation applied to motor-imagery based brain-computer-interface 

    Fumanal Idocin, Javier Upna Orcid; Vidaurre, Carmen Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid; Gómez Fernández, Marisol Upna Orcid; Andreu-Perez, J.; Prasad, M.; Bustince Sola, Humberto Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
    In this paper we propose a new version of penalty-based aggregation functions, the Multi Cost Aggregation choosing functions (MCAs), in which the function to minimize is constructed using a convex combination of two relaxed ...
  • Microfluidic platform using focused ultrasound passing through hydrophobic meshes with jump availability 

    Koroyasu, Yusuke; Nguyen, Thanh-Vinh; Sasaguri, Shun; Marzo Pérez, Asier Upna Orcid; Ezcurdia Aguirre, Íñigo Fermín Upna Orcid; Nagata, Yuuya; Yamamoto, Tatsuya; Nomura, Nobuhiko; Hoshi, Takayuki; Ochiai, Yoichi; Fushimi, Tatsuki (Oxford University Press, 2023)   Artículo / Artikulua  OpenAccess
    Applications in chemistry, biology, medicine, and engineering require the large-scale manipulation of a wide range of chemicals, samples, and specimens. To achieve maximum efficiency, parallel control of microlitre droplets ...
  • Decomposition of fuzzy relations: an application to the definition, construction and analysis of fuzzy preferences 

    Campión Arrastia, María Jesús Upna Orcid; Induráin Eraso, Esteban Upna Orcid; Raventós Pujol, Armajac Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
    In this article, we go deeper into the study of some types of decompositions defined by triangular norms and conorms. We work in the spirit of the classical Arrovian models in the fuzzy setting and their possible extensions. ...
  • Tailored prevention of functional decline through a multicomponent exercise program in hospitalized oncogeriatric patients: study protocol for a randomized clinical trial 

    Martínez Velilla, Nicolás; Arrazubi, Virginia; Zambom Ferraresi, Fabíola Upna Orcid; Morilla Ruiz, Idoia; López Sáez de Asteasu, Mikel; Ramírez Vélez, Robinson; Zambom Ferraresi, Fabrício Upna Orcid; Casa Marín, Antón de la; Ollo Martínez, Iranzu; Gorospe-García, Itziar; Gurruchaga Sotés, Ibon; Galbete Jiménez, Arkaitz Upna Orcid; Cedeño Veloz, Bernardo Abel; Martín-Nevado, L.; Izquierdo Redín, Mikel; Vera García, Ruth (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
    BACKGROUND: Cancer mostly affects older adults, causing a wide variety of diagnostic and therapeutic dilemmas. One of the most important moments in cancer patients is the hospitalization period, in which older patients ...
  • Vegetable waste extracts as enhancers of baculovirus infections 

    Martínez Inda, Blanca Upna; Simón de Goñi, Oihane Upna Orcid; Jiménez Moreno, Nerea Upna Orcid; Esparza Catalán, Irene Upna; Moler Cuiral, José Antonio Upna Orcid; Caballero Murillo, Primitivo Upna Orcid; Ancín Azpilicueta, Carmen Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
    Vegetable waste extracts (VWE) contain a great variety of antioxidants such as polyphenols, which have shown to potentiate baculovirus infections, making them ingredients for pest control ingredients. In the present study, ...
  • A scalable approach for short-term disease forecasting in high spatial resolution areal data 

    Orozco Acosta, Erick; Riebler, Andrea; Adin Urtasun, Aritz Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid (Wiley-VCH, 2023)   Artículo / Artikulua  OpenAccess
    Short-term disease forecasting at specific discrete spatial resolutions has become a high-impact decision-support tool in health planning. However, when the number of areas is very large obtaining predictions can be ...
  • Price of Anarchy with multiple information sources under competition 

    Miguelez García, Fernando; Ayesta, Urtzi; Doncel, Josu (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
    We characterize the Price of Anarchy (PoA) in a single channel under the presence of K competing sources. As performance metric we consider the Age of Information, which measures the freshness of information in a remote ...
  • Construction methods of fuzzy implications on bounded posets 

    Wang, Mei; Zhang, Xiaohong; Bustince Sola, Humberto Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid (Elsevier, 2024)   Artículo / Artikulua
    The fuzzy implication on bounded lattices was introduced by Palmeira et al., and the method of extending fuzzy implications on bounded lattices by using retraction was provided. However, we find that the extension of fuzzy ...
  • A criterion and incremental design construction for simultaneous kriging predictions 

    Waldl, Helmut; Müller, Werner G.; Trandafir, Paula Camelia Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
    In this paper, we further investigate the problem of selecting a set of design points for universal kriging, which is a widely used technique for spatial data analysis. Our goal is to select the design points in order to ...
  • Multivalued and non-symmetric operators for sequential information processing 

    Ferrero Jaurrieta, Mikel (2024)   Tesis doctoral / Doktoretza tesia
    Las estructuras de datos multivaluadas son un tipo de organización de datos que permiten representar información compuesta por varios atributos, variables, dimensiones o coordenadas. Para su funcionamiento básico se dotan ...
  • Comment on 'Effects of Vivifrail multicomponent intervention on functional capacity' by Casas-Herrero et al.-The authors reply. 

    Sánchez Sánchez, Juan Luis Upna; Izquierdo Redín, Mikel; López Saez de Asteasu, Mikel; Antón Rodrigo, Iván; Galbete Jiménez, Arkaitz Upna Orcid; Álvarez Bustos, Alejandro; Casas Herrero, Álvaro Upna (Wiley, 2024)   Artículo / Artikulua  OpenAccess
    In this response letter, we would like to clarify some aspects related to the methodology and inferences derived from our work entitled 'Effects of Vivifrail multicomponent intervention on functional capacity', which was ...
  • Enhancing the quality of amplitude patterns using time-multiplexed virtual acoustic fields 

    Elizondo Martínez, Sonia; Ezcurdia Aguirre, Íñigo Fermín Upna Orcid; Goñi Carnicero, Jaime Upna; Galar Idoate, Mikel Upna Orcid; Marzo Pérez, Asier Upna Orcid (American Institute of Physics, 2023)   Artículo / Artikulua  OpenAccess
    Ultrasonic fields can push and levitate particles, heat up materials, induce contactless tactile stimuli, or affect the blood-brain barrier. Current phased-arrays can create dynamic amplitude patterns, but their quality ...
  • Nonlinear trapping stiffness of mid-air single-axis acoustic levitators 

    Fushimi, Tatsuki; Hill, Thomas L.; Marzo Pérez, Asier Upna Orcid; Drinkwater, Bruce W. (American Institute of Physics, 2018)   Artículo / Artikulua  OpenAccess
    We describe and experimentally explore a nonlinear stiffness model of the trapping of a solid particle in a single-axis acoustic levitator. In contrast to the commonly employed linear stiffness assumption, our nonlinear ...
  • Detecting change-points in the time series of surfaces occupied by pre-defined NDVI categories in continental Spain from 1981 to 2015 

    Militino, Ana F. Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Pérez Goya, Unai Upna Orcid (Springer, 2018)   Capítulo de libro / Liburuen kapitulua  OpenAccess
    The free access to satellite images since more than 40 years ago has provoked a rapid increase of multitemporal derived information of remote sensing data that should be summarized and analyzed for future inferences. ...
  • Flexible Bayesian P-splines for smoothing age-specific spatio-temporal mortality patterns 

    Goicoa Mangado, Tomás; Adin Urtasun, Aritz Upna Orcid; Etxeberria Andueza, Jaione Upna Orcid; Militino, Ana F. Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid (SAGE, 2019)   Artículo / Artikulua  OpenAccess
    In this paper age-space-time models based on one and two-dimensional P-splines with B-spline bases are proposed for smoothing mortality rates, where both xed relative scale and scale invariant two-dimensional penalties ...
  • Machine learning procedures for daily interpolation of rainfall in Navarre (Spain) 

    Militino, Ana F. Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid; Pérez Goya, Unai Upna Orcid (Springer, 2023)   Capítulo de libro / Liburuen kapitulua
    Kriging is by far the most well known and widely used statistical method for interpolating data in spatial random fields. The main reason is that it provides the best linear unbiased predictor and it is an exact interpolator ...
  • Scalable Bayesian modeling for smoothing disease mapping risks in large spatial data sets using INLA 

    Orozco Acosta, Erick Upna Orcid; Adin Urtasun, Aritz Upna Orcid; Ugarte Martínez, María Dolores Upna Orcid (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
    Several methods have been proposed in the spatial statistics literature to analyse big data sets in continuous domains. However, new methods for analysing high-dimensional areal data are still scarce. Here, we propose a ...

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El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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