Listar Artículos de revista DEIM - EIMS Aldizkari artikuluak por título

A splitting uniformly convergent method for one-dimensional parabolic singularly perturbed convection-diffusion systems

Clavero, Carmelo; Jorge Ulecia, Juan Carlos

(Elsevier, 2023) Artículo / Artikulua

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 ...

Stability of phenolic compounds in grape stem extracts

Esparza Catalán, Irene

; Cimminelli, María José

; Moler Cuiral, José Antonio

; Jiménez Moreno, Nerea

; Ancín Azpilicueta, Carmen

(MDPI, 2020) Artículo / Artikulua

Grape stem is rich in phenolic compounds, especially stilbenes. These antioxidants can be degraded during the storage of grape stem extracts for long periods of time. The aim of this work was to analyze the stability of ...

Steering the synthesis of Fe3O4 nanoparticles under sonication by using a fractional factorial design

Echeverría Morrás, Jesús

; Moriones Jiménez, Paula

; Garrido Segovia, Julián José

; Ugarte Martínez, María Dolores

; Cervera Gabalda, Laura María

; Garayo Urabayen, Eneko

; Gómez Polo, Cristina

; Pérez de Landazábal Berganzo, José Ignacio

(Elsevier, 2021) Artículo / Artikulua

Superparamagnetic iron oxide nanoparticles (MNPs) have the potential to act as heat sources in magnetic hyperthermia. The key parameter for this application is the specific absorption rate (SAR), which must be as large as ...

Strengthened ordered directionally monotone functions. Links between the different notions of monotonicity

Sesma Sara, Mikel

; Lafuente López, Julio

; Roldán López de Hierro, Antonio Francisco; Mesiar, Radko; Bustince Sola, Humberto

(Elsevier, 2019) Artículo / Artikulua

In this work, we propose a new notion of monotonicity: strengthened ordered directional monotonicity. This generalization of monotonicity is based on directional monotonicity and ordered directional monotonicity, two recent ...

Strong negations and restricted equivalence functions revisited: an analytical and topological approach

Bustince Sola, Humberto

; Campión Arrastia, María Jesús

; Miguel Turullols, Laura de

; Induráin Eraso, Esteban

(Elsevier, 2021) Artículo / Artikulua

Throughout this paper, our main idea is to analyze the concepts of a strong negation and a restricted equivalence function, that appear in a natural way when dealing with theory and applications of fuzzy sets and fuzzy ...

Strong stability preserving properties of composition Runge-Kutta schemes

Higueras Sanz, Inmaculada

; Roldán Marrodán, Teodoro

(Springer, 2019) Artículo / Artikulua

In this paper Strong Stability Preserving (SSP) properties of Runge Kutta methods obtained by com- posing k different schemes with different step sizes are studied. The SSP coefficient of the composition method is obtained ...

Structure of the Lipschitz free p-spaces Fp(Zd) and Fp(Rd) for 0 < p ≤ 1

Albiac Alesanco, Fernando José

; Ansorena, José L.; Cúth, Marek; Doucha, Michal (Springer, 2021) Artículo / Artikulua

Our aim in this article is to contribute to the theory of Lipschitz free p-spaces for 0 < p ≤ 1 over the Euclidean spaces Rd and Zd. To that end, on one hand we show that Fp(Rd) admits a Schauder basis for every p ∈ 2 (0, ...

A study on the suitability of different pooling operators for convolutional neural networks in the prediction of COVID-19 through chest x-ray image analysis

Rodríguez Martínez, Iosu

; Ursúa Medrano, Pablo; Fernández Fernández, Francisco Javier

; Takáč, Zdenko; Bustince Sola, Humberto

(Elsevier, 2024) Artículo / Artikulua

The 2019 coronavirus disease outbreak, caused by the severe acute respiratory syndrome type-2 virus (SARS-CoV-2), was declared a pandemic in March 2020. Since its emergence to the present day, this disease has brought ...

Submultiplicative norms in CC(K) spaces with applications to uniform algebras

Albiac Alesanco, Fernando José

; Blasco, Óscar; Briem, E. (Springer, 2024) Artículo / Artikulua

Certain algebra norms on the algebra of functions on a two-point set are defined and used to construct a new family of parametric algebra norms on the space CC(K) of continuous complex-valued functions on a compact Hausdorff ...

Sugeno integral generalization applied to improve adaptive image binarization

Bardozzo, Francesco; Osa Hernández, Borja de la

; Horanská, Lubomíra; Fumanal Idocin, Javier

; Priscoli, Mattia delli; Troiano, Luigi; Tagliaferri, Roberto; Fernández Fernández, Francisco Javier

; Bustince Sola, Humberto

(Elsevier, 2021) Artículo / Artikulua

Classic adaptive binarization methodologies threshold pixels intensity with respect to adjacent pixels exploiting integral images. In turn, integral images are generally computed optimally by using the summed-area-table ...

A survey on the mathematical foundations of axiomatic entropy: representability and orderings

Campión Arrastia, María Jesús

; Gómez Polo, Cristina

; Induráin Eraso, Esteban

; Raventós Pujol, Armajac

(MDPI, 2018) Artículo / Artikulua

Different abstract versions of entropy, encountered in science, are interpreted in the light of numerical representations of several ordered structures, as total-preorders, interval-orders and semiorders. Intransitivities, ...

The sustainability dimensions in intelligent urban transportation: a paradigm for smart cities

Reyes-Rubiano, Lorena Silvana

; Serrano Hernández, Adrián

; Montoya Torres, Jairo R.; Faulín Fajardo, Javier

(MDPI, 2021) Artículo / Artikulua

The transportation sector has traditionally been considered essential for commercial activities, although nowadays, it presents clear negative impacts on the environment and can reduce social welfare. Thus, advanced ...

The swallowtail integral in the highly oscillatory region II

Ferreira González, Chelo

; López García, José Luis

; Pérez Sinusía, Ester

(Kent State UniversityJohann Radon Institute (RICAM), 2020) Artículo / Artikulua

We analyze the asymptotic behavior of the swallowtail integral R ∞ −∞ e i(t 5+xt3+yt2+zt)dt for large values of |y| and bounded values of |x| and |z|. We use the simpli ed saddle point method introduced in [López et al., ...

The swallowtail integral in the highly oscillatory region III

Ferreira González, Chelo

; López García, José Luis

; Pérez Sinusía, Ester

(Taylor & Francis, 2021) Artículo / Artikulua

We consider the swallowtail integral Ψ(x,y,z):=∫∞−∞ei(t5+xt3+yt2+zt)dt for large values of |z| and bounded values of |x| and |y|. The integrand of the swallowtail integral oscillates wildly in this region and the asymptotic ...

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) Artículo / Artikulua

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 ...

T-overlap t-migrative functions: a generalization of migrativity in t-overlap functions

Zapata, Hugo; Bustince Sola, Humberto

; Pereira Dimuro, Graçaliz

(Universidad Distrital Francisco José de Caldas (Colombia), 2020) Artículo / Artikulua

Este artículo introduce una generalización de funciones migrativas por extensión de la condición de la operación producto aplicada en las variables. Más específicamente, en lugar de exigir multiplicar la variable x por un ...

Tailoring the structural and magnetic properties of Co-Zn nanosized ferrites for hyperthermia applications

Gómez Polo, Cristina

; Recarte Callado, Vicente

; Cervera Gabalda, Laura María

; Beato López, Juan Jesús

; López García, Javier

; Rodríguez Velamazán, José Alberto; Ugarte Martínez, María Dolores

; Mendonça, E. C.; Duque, J. G. S. (Elsevier, 2018) Artículo / Artikulua

A comparative study of the magnetic properties (magnetic moment, magnetocrystalline anisotropy) and hyperthermia response in Co-Zn spinel nanoparticles is presented. The CoxZn1-xFe2O4 nanoparticles (x = 1, 0.5, 0.4, 0.3, ...

Teacher degree students attitudes towards STEM activities in two spanish universities

Lasa Oyarbide, Aitzol

; Iribas, Haritz; Belletich Ruiz, Olga

; Rodríguez Wilhelmi, Miguel (Universidade do Porto, 2022) Artículo / Artikulua

The attempt to train undergraduate primary school teachers in STEM skills faces an evident handicap, since students enrolling Teacher Degrees usually have humanistic secondary school backgrounds. Attitudes towards STEM on ...

Temperature and water availability during maturation affect the cytokinins and auxins profile of radiata pine somatic embryos

Moncaleán, Paloma; García Mendiguren, Olatz; Novák, Ondrej; Strnad,Miroslav; Goicoa Mangado, Tomás

; Ugarte Martínez, María Dolores

; Montalbán, Itziar A. (Frontiers Media, 2018) Artículo / Artikulua

Somatic embryogenesis (SE) provides us a potent biotechnological tool to manipulate the physical and chemical conditions (water availability) along the process and to study their effect in the final success in terms of ...

Three categories of set-valued generalisations from fuzzy sets to interval-valued and Atanassov intuitionistic fuzzy sets

Couso, Inés; Bustince Sola, Humberto

(IEEE, 2018) Artículo / Artikulua

Many different notions included in the fuzzy set literature can be expressed in terms of functionals defined over collections of tuples of fuzzy sets. During the last decades, different authors have independently generalised ...