Listar Dpto. Ingeniería Matemática e Informática - Matematika eta Informatika Ingeniaritza Saila por título
Mostrando ítems 21-40 de 82
-
Convergent and asymptotic expansions of the Pearcey integral
López García, José Luis
; Pagola Martínez, Pedro Jesús (Elsevier, 2015)
Artículo / Artikulua 
We consider the Pearcey integral P(x; y) for large values of |x|, x, y ∈ C. We can find in the literature several convergent or asymptotic expansions in terms of elementary and special functions, with different levels ... -
Convergent and asymptotic methods for second-order difference equations with a large parameter
Ferreira González, Chelo; López García, José Luis ; Pérez Sinusía, Ester (Springer, 2018)
Artículo / Artikulua
We consider the second-order linear difference equation y(n+2)−2ay(n+1)−Λ2y(n)=g(n)y(n)+f(n)y(n+1) , where Λ is a large complex parameter, a≥0 and g and f are sequences of complex numbers. Two methods are proposed to find ... -
Convergent asymptotic expansions of Charlier, Laguerre and Jacobi polynomials
López García, José Luis ; Temme, Nico M. (Cambridge University Press, 2004)
Artículo / Artikulua
Convergent expansions are derived for three types of orthogonal polynomials: Charlier, Laguerre and Jacobi. The expansions have asymptotic properties for large values of the degree. The expansions are given in terms of ... -
Convergent expansions of the Bessel functions in terms of elementary functions
López García, José Luis ; Pagola Martínez, Pedro Jesús (Springer US, 2018)
Artículo / Artikulua
We consider the Bessel functions Jν (z) and Yν (z) for ν > −1/2 and z ≥ 0. We derive a convergent expansion of Jν (z) in terms of the derivatives of (sin z)/z, and a convergent expansion of Yν (z) in terms of derivatives ... -
Convergent expansions of the incomplete gamma functions in terms of elementary functions
Bujanda Cirauqui, Blanca ; López García, José Luis ; Pagola Martínez, Pedro Jesús (World Scientific Publishing, 2017)
Artículo / Artikulua
We consider the incomplete gamma function γ(a,z) for Ra>0 and z∈C. We derive several convergent expansions of z−aγ(a,z) in terms of exponentials and rational functions of z that hold uniformly in z with Rz bounded from ... -
Decoupling mixed finite elements on hierarchical triangular grids for parabolic problems
Arrarás Ventura, Andrés ; Portero Egea, Laura (Elsevier, 2018)
Artículo / Artikulua
In this paper, we propose a numerical method for the solution of time-dependent flow problems in mixed form. Such problems can be efficiently approximated on hierarchical grids, obtained from an unstructured coarse ... -
Design and performance analysis of wireless body area networks in complex indoor e-Health hospital environments for patient remote monitoring
Aguirre Gallego, Erik ; López Iturri, Peio ; Azpilicueta Fernández de las Heras, Leyre ; Rivarés Garasa, Carmen; Astrain Escola, José Javier ; Villadangos Alonso, Jesús ; Falcone Lanas, Francisco Javier (SAGE, 2016)
Artículo / Artikulua
In this article, the design and performance analysis of wireless body area network–based systems for the transmission of medical information readable in an android-based application deployed within complex indoor e-Health ... -
Designing and implementing digital educational tools for children and youth with special needs using natural interfaces
Bossavit, Benoît (2016)
Tesis doctoral / Doktoretza tesia
Esta tesis se centra en el potencial pedagógico de Interfaces Naturales de Usuario (NUIs) y su aplicación en distintos ámbitos educativos. Las NUIs son interacciones remotas basadas en movimientos gestuales del cuerpo y ... -
Dynamics of axially symmetric perturbed Hamiltonians in 1:1:1 resonance
Carrasco, Dante; Palacián Subiela, Jesús Francisco ; Vidal Díaz, Claudio; Vidarte, Jhon; Yanguas Sayas, Patricia (Springer, 2018)
Artículo / Artikulua
We study the dynamics of a family of perturbed three-degree-of-freedom Hamiltonian systems which are in 1:1:1 resonance. The perturbation consists of axially symmetric cubic and quartic arbitrary polynomials. Our analysis ... -
An easy to deploy street light control system based on wireless communication and LED technology
Elejoste Larrucea, Pilar; Angulo Martínez, Ignacio; Perallos Ruiz, Asier; Chertudi Ozamiz, Aitor; García Zuazola, Ignacio Julio; Moreno, Asier; Azpilicueta Fernández de las Heras, Leyre ; Astrain Escola, José Javier ; Falcone Lanas, Francisco Javier ; Villadangos Alonso, Jesús (MDPI, 2013)
Contribución a congreso / Biltzarrerako ekarpena
This paper presents an intelligent streetlight management system based on LED lamps, designed to facilitate its deployment in existing facilities. The proposed approach, which is based on wireless communication technologies, ... -
Educational games to enhance museum visits for schools
Bossavit, Benoît ; Pina Calafi, Alfredo ; Sánchez Gil, Isabel ; Urtasun, Aitziber (National Taiwan Normal University, 2018)
Artículo / Artikulua
Museums usually look for new educational tools to enhance their exhibition. The Oteiza's museum in Navarre (Spain) especially gives importance to the dissemination of Jorge Oteiza's work to children at schools. Consequently, ... -
An efficient numerical method for singularly perturbed time dependent parabolic 2D convection-diffusion systems
Clavero, Carmelo; Jorge Ulecia, Juan Carlos (Elsevier, 2018)
Artículo / Artikulua
In this paper we deal with solving efficiently 2D linear parabolic singularly perturbed systems of convection–diffusion type. We analyze only the case of a system of two equations where both of them feature the same diffusion ... -
Embedded pairs of fractional step Runge-Kutta methods and improved domain decomposition techniques for parabolic problems
Portero Egea, Laura ; Jorge Ulecia, Juan Carlos (Springer, 2007)
Contribución a congreso / Biltzarrerako ekarpena
In this paper we design and apply new embedded pairs of Frac- tional Step Runge-Kutta methods to the e±cient solution of multidimensional parabolic problems. These time integrators are combined with a suitable split- ting ... -
Evaluation of deployment challenges of wireless sensor networks at signalized intersections
Azpilicueta Fernández de las Heras, Leyre ; López Iturri, Peio ; Aguirre Gallego, Erik ; Martínez Carrasco, Carlos; Astrain Escola, José Javier ; Villadangos Alonso, Jesús ; Falcone Lanas, Francisco Javier (MDPI, 2016)
Artículo / Artikulua
With the growing demand of Intelligent Transportation Systems (ITS) for safer and more efficient transportation, research on and development of such vehicular communication systems have increased considerably in the last ... -
Eventual consistency: origin and support
Muñoz Escoí, Francesc D.; García Escrivá, José Ramón; Sendra Roig, Juan Salvador; Bernabéu Aubán, José M.; González de Mendívil Moreno, José Ramón (Slovak Academy of Sciences, Institute of Informatics, 2018)
Artículo / Artikulua
Eventual consistency is demanded nowadays in geo-replicated services that need to be highly scalable and available. According to the CAP constraints, when network partitions may arise, a distributed service should choose ... -
An extension of the multiple Erdélyi-Kober operator and representations of the generalized hypergeometric functions
Karp, D. B.; López García, José Luis (De Gruyter, 2018)
Artículo / Artikulua
In this paper we investigate the extension of the multiple Erd elyi-Kober fractional integral operator of Kiryakova to arbitrary complex values of parameters by the way of regularization. The regularization involves ... -
Formulas for the amplitude of the van der Pol limit cycle through the homotopy analysis method
López García, José Luis ; Abbasbandy, S.; López Ruiz, R. (Hindawi / Wiley, 2009)
Artículo / Artikulua
The limit cycle of the van der Pol oscillator, x¨+ε(x2−1)x˙+x=0, is studied in the plane (x,x˙) by applying the homotopy analysis method. A recursive set of formulas that approximate the amplitude and form of this limit ... -
From start to finish: teenagers on the autism spectrum developing their own collaborative game
Bossavit, Benoît ; Parsons, Sarah (Emerald, 2017)
Artículo / Artikulua
Purpose: The purpose of this paper is to investigate how teenagers on the autism spectrum respond to their involvement in the creation of a collaborative game, meeting the curriculum requirements in programming at secondary ... -
A fully discrete Calderón calculus for the two-dimensional elastic wave equation
Domínguez Baguena, Víctor ; Sánchez Vizuet, Tonatiuh; Sayas, Francisco Javier (Elsevier, 2015)
Artículo / Artikulua
In this paper we present a full discretization of the layer potentials and boundary integral operators for the elastic wave equation on a parametrizable smooth closed curve in the plane. The method can be understood as a ... -
Generalization of Zernike polynomials for regular portions of circles and ellipses
Navarro, Rafael; López García, José Luis ; Díaz, José A.; Pérez Sinusía, Ester (Optical Society of America, 2014)
Artículo / Artikulua
Zernike polynomials are commonly used to represent the wavefront phase on circular optical apertures, since they form a complete and orthonormal basis on the unit circle. Here, we present a generalization of this Zernike ...
