Cantó Colomina, Rafael; Peláez, María J.; Urbano Salvador, Ana María(Elsevier, 2015-02)
[EN] Let A be a rank deficient square matrix. We characterize the unique full rank Cholesky factorization LL^T of A where the factor L is a lower echelon matrix with positive leading entries. We compute an extended ...
Let A = (a(ij)) is an element of R-nxm be a totally nonpositive matrix with rank(A) = r <= min{n, m} and a(11) = 0. In this paper we obtain a characterization in terms of the full rank factorization in quasi-LDU form, that ...
KALDENHOFF, Martin(Editorial Universitat Politècnica de València, 2009-11-25)
This article describes some experiences with flow funnel in large concrete silos with a large discharge eccentricity. Some in-situ measurements were made (full-size experiments) and the results are described here. As a ...
[EN] This paper deals with the explicit determination of the first probability density function of the solution stochastic process to random autonomous first-order linear systems of difference equations under very general ...
García Meca, Carlos; Ortuño Molinero, Rubén; Martí Sendra, Javier; Martínez Abietar, Alejandro José(IOP Publishing: Open Access Journals, 2014-02-21)
We present a method that enables the implementation of full three-dimensional (3D) transformation media with minimized anisotropy. It is based on a special kind of shape-preserving mapping and a subsequent optimization ...
[EN] We propose a stable full-duplex transmission of millimeter-wave signals over a hybrid single-mode fiber (SMF) and free-space optics (FSO) link for the fifth-generation (5G) radio access networks to accelerate the ...
Ferrando-Rocher, Miguel; Herranz Herruzo, José Ignacio; Valero-Nogueira, Alejandro; Bernardo Clemente, Bernardo(Institute of Electrical and Electronics Engineers, 2019-07)
[EN] This letter presents an 8 x 8 dual-band shared-aperture array antenna operating in K-(19.5-21.5 GHz) and Ka-band (29-31 GHz) using gap waveguide technology. Radiating elements consist of circular apertures located on ...
San Blas Oltra, Ángel Antonio; Pérez Soler, Francisco Javier; Gil Raga, Jordi; Mira Pérez, Fermín Elías; Boria Esbert, Vicente Enrique; Gimeno Martinez, Benito(2011)
The efficient design of broadband turnstile junctions compensated with piled-up cylindrical metallic posts is discussed in this contribution. Very high relative bandwidths can be obtained, while maintaining the diameter ...
Gil Raga, Jordi(Universitat Politècnica de València, 2010-03-29)
Desde los primeros estudios desarrollados por S.B. Cohn a finales de los años 60, los resonadores dieléctricos, con factor de calidad elevado, han sido utilizados para el diseño de filtros paso-banda de microondas. A partir ...
Penaranda-Foix, Felipe L.; Janezic, Michael D.; Catalá Civera, José Manuel; Canós Marín, Antoni Josep(Institute of Electrical and Electronics Engineers (IEEE), 2012-09)
In this paper, a full-wave method for the electromagnetic analysis of dielectric-loaded cylindrical and coaxial waveguides and cavities is developed. For this purpose, a new four-port ring network is proposed, and the ...
Coves Soler, Angela; Marini, Stephan; Gimeno Martinez, Benito; Boria Esbert, Vicente Enrique(Institute of Electrical and Electronics Engineers (IEEE), 2012-06)
A novel full-wave method for the modal characterization of dielectric electromagnetic band-gap structures under oblique plane wave excitation is presented, showing the dielectric lattice periodicity in both the longitudinal ...
Carceller Candau, Carlos(Universitat Politècnica de València, 2016-05-16)
[EN] Modern communications systems impose stringent requirements on the equipment that operates at microwave frequency, especially in the case of wireless communications. The design of passive components for these applications ...
Marqués-Villarroya, David; Canós Marín, Antoni Josep; Penaranda-Foix, Felipe L.; García-Baños, Beatriz; Catalá Civera, José Manuel(Institute of Electrical and Electronics Engineers, 2018)
[EN] A novel dielectrometer to measure the complex permittivity of high-loss liquids is presented. The geometry consists of a reentrant cavity with insertion holes, where the holder filled with liquid can be introduced ...
Latorre, Marcos; Montáns, Francisco Javier(Elsevier, 2016-01-15)
[EN] In this paper we present a novel formulation for phenomenological anisotropic finite visco-hyperelasticity. The formulation is based on a multiplicative decomposition of the equilibrated deformation gradient into ...
[EN] Quadrantanopia caused by inadvertent severing of Meyer's Loop of the optic radiation is a well-recognised complication of temporal lobectomy for conditions such as epilepsy. Dissection studies indicate that the anterior ...
Barbero-García, Inés; Lerma, José Luis; Mora Navarro, Joaquin Gaspar(Elsevier, 2020-08)
[EN] Image-based and range-based solutions can be used for the acquisition of valuable data in medicine. However, most of these methods are not valid for non-static patients. Cranial deformation is a problem with high ...
Nowadays, radiotherapy is one of the key techniques for localized cancer treatment. Accurate identification of target volume (TV) and organs at risk (OAR) is a crucial step to therapy success. Spinal cord is one of the ...
[EN] Nondestructive testing of metallic objects that may contain embedded defects of different sizes is an important application in many industrial branches for quality control. Most of these techniques allow defect detection ...
Roger Varea, Sandra; Ramiro Sánchez, Carla; González Salvador, Alberto; Almenar Terré, Vicenç; Vidal Maciá, Antonio Manuel(Institute of Electrical and Electronics Engineers (IEEE), 2012-10)
Multicore and graphic processing units (GPUs) can be combined to efficiently implement signal-processing algorithms for communication systems, due to their parallel processing capabilities. This paper proposes a fully ...