[EN] We study the class of (p,q)-regular operators between quasi-Banach lattices. In particular, a representation of this class as the dual of a certain tensor norm for Banach lattices is given. We also provide some ...
Vergara, Marina; Rezaei, Ahmadreza; Schramm, Georg; Rodríguez-Álvarez, María José; Benlloch Baviera, Jose María; Nuyts, Johan(Institute of Electrical and Electronics Engineers, 2021-09)
[EN] Several research groups are studying organ-dedicated limited angle positron emission tomography (PET) systems to optimize performance-cost ratio, sensitivity, access to the patient, and/or flexibility. Often open ...
Vergara, Marina; Rezaei, Ahmadreza; Rodríguez-Álvarez, Maria Jose; Benlloch Baviera, Jose María; Nuyts, Johan(KU Leuven, 2021-07-23)
[EN] Recently, a wide interest on organ-dedicated PET systems
has been shown. Some of those systems present geometries that produce an incomplete sampling of the tomographic data due to limited
angular coverage and/or ...
This paper presents some aspects of the time propagation of underground water leakage in controlled laboratory conditions using a drilled polyvinyl chloride (PVC) pipe and interpreting ground penetrating radar (GPR) images. ...
Berenguer Pérez, Marco Antonio(Universitat Politècnica de València, 2020-05-04)
[ES] Este proyecto consiste en el diseño de un longboard impreso en 3D eléctrico o un patín largo cuyo objetivo principal es ser manejable a altas velocidades, ya que se utiliza para freeriding skate y no es capaz de otros ...
[EN] This study aims to implement and evaluate a methodological proposal using the hologram as a teaching medium for the learning of concepts related to areas and volumes of geometrical bodies. The study has been carried ...
Bernal-González, L.; Conejero, J. Alberto; Murillo Arcila, Marina; SEOANE SEPÚLVEDA, JUAN BENIGNO(Elsevier, 2019-10-15)
[EN] In this paper, the notion of [S]-lineability (originally coined by Vladimir I. Gurariy) is introduced and developed in a general abstract setting. This new notion is, then, applied to specific situations, as for ...
Marco, Francisco J.; Martínez Uso, María José; López, Jose A.(Cambridge University Press, 2018-03-07)
[EN] One of the important challenges that Gaia imposes on the Astrometric Catalogs, is a careful study in everything affected by parallax. A particularly important case is the necessary linkage Gaia - HCRF - ICRF2, which ...
Jornet-Sanz, Marc; Corberán-Vallet, Ana; Santonja, F.; Villanueva Micó, Rafael Jacinto(Institut d'Estadística de Catalunya (Idescat), 2017-06)
[EN] Our objective in this paper is to model the dynamics of respiratory syncytial virus in the region of Valencia (Spain) and analyse the effect of vaccination strategies from a health-economic point of view. Compartmental ...
Cascales, B.; Guirao Sánchez, Antonio José; Kadets, V.(Elsevier, 2013-06-20)
This paper is devoted to showing that Asplund operators with range in a uniform Banach algebra have
the Bishop¿Phelps¿Bollobas property, i.e., they are approximated by norm attaining Asplund operators
at the same time ...
[EN] The simplified spherical harmonics equations are a useful approximation to the stationary neutron transport equation. The eigenvalue problem associated with them is a challenging problem from the computational point ...
Corberán, A.; Plana, I.; Sanchís Llopis, José María(John Wiley & Sons, 2007-07)
[EN] In this paper, we present an exact algorithm for the Windy General Routing Problem. This problem generalizes many important Arc Routing Problems and also has some interesting real-life applications. The Branch & Cut ...
Corberán, Angel; Plana, Isaac; Rodríguez-Chía, Antonio Manuel; Sanchís Llopis, José María(Springer-Verlag, 2013-10)
[EN] The Maximum Benefit Chinese Postman Problem (MBCPP) is an NP-hard problem that considers several benefits associated with each edge, one for each time the edge is traversed with a service. The objective is to find a ...
Archetti, C.; Corberán, A.; Plana, I.; Sanchís Llopis, José María; Speranza, M.G.(Elsevier, 2016)
[EN] In arc routing problems, customers are located on arcs, and routes of minimum cost have to be identified.
In the Orienteering Arc Routing Problem (OARP),in addition to a set of regular customers that have to be
serviced, ...
Ávila, T.; Corberán, A.; Plana, I.; Sanchís Llopis, José María(Elsevier, 2016-03-16)
[EN] In this paper we study the profitable windy rural postman problem. This is an arc routing problem with profits defined on a windy graph in which there is a profit associated with some of the edges of the graph, ...
Benavent Lopez, Enrique; Corberán, Angel; Desaulniers, Guy; Lessard, François; Plana, Isaac; Sanchís Llopis, José María(John Wiley & Sons, 2014)
[EN] The min-max k -vehicles windy rural postman problem consists of minimizing the maximal distance traveled by a vehicle to find a set of balanced routes that jointly
service all the required edges in a windy graph. ...
Given a square matrix A, a Brauer's theorem [Brauer A., Limits for the characteristic roots of a matrix. IV. Applications to stochastic matrices, Duke Math. J., 1952, 19(1), 75-91] shows how to modify one single eigenvalue ...
Alegre Gil, Maria Carmen; Marín Molina, Josefa(Babes-Bolyai University, 2018-02-01)
[EN] In this paper we give a quasi-metric version of Caristi's fixed point theorem by using mw-distances. Our theorem generalizes a recent result obtained by Karapinar and Romaguera in [7]
[EN] In this study, our aim is to explore the dynamics of COVID-19 or 2019-nCOV in Argentina considering the parameter values based on the real data of this virus from March 03, 2020 to March 29, 2021 which is a data range ...
[EN] We obtain a characterization of Hausdorff left K-complete quasi-metric spaces by means of alpha-psi-contractive mappings, from which we deduce the somewhat surprising fact that one the main fixed point theorems of ...