Publications

Displaying 526 - 550 of 1351

Publication	Date
Temporal and spatial variations of the absolute reflectivity of Jupiter and Saturn from 0.38 to 1.7μm with PlanetCam-UPV/EHU Authors: Ricardo Hueso,Jose Félix Rojas,I. Mendikoa,Agustín Sánchez-Lavega,Javier López-Santiago,Santiago Pérez-Hoyos We provide measurements of the absolute reflectivity of Jupiter and Saturn along their central meridians in filters covering a wide range of visible and near-infrared wavelengths (from 0.38 to 1.7 $��$m) that are not often presented in the literature. We also give measurements of the geometric… EDP Sciences	2017-11-01
On Efficiently Solving the Vehicle Routing Problem with Time Windows Using the Bat Algorithm with Random Reinsertion Operators Authors: Javier Del Ser,Javier Del Ser,Pedro Lopez-Garcia,Eneko Osaba,Xin-She Yang,Roberto Carballedo,Iztok Fister An evolutionary and discrete variant of the Bat Algorithm (EDBA) is proposed for solving the Vehicle Routing Problem with Time Windows, or VRPTW. The EDBA developed not only presents an improved movement strategy, but it also combines with diverse heuristic operators to deal with this type of… Springer International Publishing	2017-10-10
Wind Power Production Forecasting Using Ant Colony Optimization and Extreme Learning Machines Authors: Cristina Perfecto,Miren Nekane Bilbao,Maria Carrillo,Javier Del Ser,Javier Del Ser,David Camacho Nowadays the energy generation strategy of almost every nation around the world relies on a strong contribution from renewable energy sources. In certain countries the relevance taken by wind energy is particularly high within its national production share, mainly due to its large-scale wind flow… Springer International Publishing	2017-10-05
Time-domain goal-oriented adaptivity using pseudo-dual error representations Authors: Victor M. Calo,Victor M. Calo,Judit Muñoz-Matute,Elisabete Alberdi,David Pardo,David Pardo,David Pardo Goal-oriented adaptive algorithms produce optimal grids to solve challenging engineering problems. Recently, a novel error representation using (unconventional) pseudo-dual problems for goal-oriented adaptivity in the context of frequency-domain wave-propagation problems has been developed. In this… Elsevier BV	2017-10-01
Detection of non-technical losses in smart meter data based on load curve profiling and time series analysis Authors: Esther Villar-Rodriguez,Javier Del Ser,Javier Del Ser,Sergio Gil-Lopez,Izaskun Oregi,Miren Nekane Bilbao The advent and progressive deployment of the so-called Smart Grid has unleashed a profitable portfolio of new possibilities for an efficient management of the low-voltage distribution network supported by the introduction of information and communication technologies to exploit its digitalization.… Elsevier BV	2017-10-01
Neptune long-lived atmospheric features in 2013–2015 from small (28-cm) to large (10-m) telescopes Authors: L.A. Sromovsky,J. Guarro,J. Sussenbach,Nicholas M. Law,Ricardo Hueso,Agustín Sánchez-Lavega,Christoph Baranec,K. de Kleer,S. Luszcz-Cook,D. Gavel,A. Wesley,Jose Félix Rojas,P. Gorczynski,E. Victor Garcia,S.M. Ammons,Michael H. Wong,Heidi Hammel,I.… Since 2013, observations of Neptune with small telescopes (28-50 cm) have resulted in several detections of long-lived bright atmospheric features that have also been observed by large telescopes such as Keck II or Hubble. The combination of both types of images allows the study of the long-term… Elsevier BV	2017-10-01
The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation Authors: S. Kalkan,Santiago Pérez-Hoyos,Yavuz Güney,B. Gaehrken,Toni Santana-Ros,Victor Ali-Lagoa,Martina Maestripieri,Kosmas Gazeas,J. C. Guirado,Nicolás Morales,E. Meza,W. Beisker,Alvaro Alvarez-Candal,Ricardo Hueso,Afşar Kabaş,J. Lecacheux,Theodor Pribulla,A.… Among the four known transneptunian dwarf planets, Haumea is an exotic, very elongated, and fast rotating body. In contrast to the other dwarf planets, its size, shape, albedo, and density are not well constrained. Here we report results of a multi-chord stellar occultation, observed on 2017… Springer Science and Business Media LLC	2017-10-01
Measuring the class-imbalance extent of multi-class problems Authors: Iñaki Inza,Jose A. Lozano,Jose A. Lozano,Jonathan Ortigosa-Hernández TIN2013-41272P, IT609-13, AP2008-00766 Elsevier BV	2017-10-01
Removing Piston-driven Mechanical Chest Compression Artefacts from the ECG Authors: Unai Irusta,Iraia Isasi,Erik Alonso,Jo Kramer-Johansen,Unai Ayala,Elisabete Aramendi,Trygve Eftestøl Piston-driven mechanical chest compression (CC) devices induce a quasi-periodic artefact in the ECG, making rhythm diagnosis unreliable. Data from 230 out-of-hospital cardiac arrest (OHCA) patients were collected in which CCs were delivered using the piston driven LUCAS-2 device. Underlying rhythms… Computing in Cardiology	2017-09-14
Goal‐oriented adaptivity using unconventional error representations for the multidimensional Helmholtz equation Authors: Ignacio Muga,Serge Prudhomme,David Pardo,David Pardo,David Pardo,Vincent Darrigrand,Vincent Darrigrand,Albert Romkes,Ángel Rodríguez-Rozas,Ángel Rodríguez-Rozas SummaryIn goal‐oriented adaptivity, the error in the quantity of interest is represented using the error functions of the direct and adjoint problems. This error representation is subsequently bounded above by element‐wise error indicators that are used to drive optimal refinements. In this work,… Wiley	2017-09-07
Millimeter-Wave V2V Communications: Distributed Association and Beam Alignment Authors: Cristina Perfecto,Javier Del Ser,Mehdi Bennis Accepted May 24, 2017 by IEEE Journal on Selected Areas of Communication (JSAC) SI on Millimeter Wave Communications for Future Mobile Networks. 14 pages. 6 Figures, 3 Tables Institute of Electrical and Electronics Engineers (IEEE)	2017-09-01
A numerical study on the hydrodynamic impact of device slenderness and array size in wave energy farms in realistic wave climates Authors: Penalba M.,Touzon I.,Lopez-Mendia J.,Nava V. The future of wave energy converters lies in the design and realization of farms comprising of several devices, given the level of actual power flow for the individual devices and because of several operational issues. Therefore, not only the hydrodynamics of individual and isolated devices should… Elsevier BV	2017-09-01
Acute toxicity, bioaccumulation and effects of dietary transfer of silver from brine shrimp exposed to PVP/PEI-coated silver nanoparticles to zebrafish Authors: Alvaro Fanjul,José María Lacave,Nerea Gutierrez,Inmaculada Arostegui,Eider Bilbao,Miren P. Cajaraville,Amaia Orbea,Irantzu Barrio The extensive use and release to the aquatic environment of silver nanoparticles (NPs) could lead to their incorporation into the food web. Brine shrimp larvae of 24h showed low sensitivity to the exposure to PVP/PEI-coated Ag NPs (5nm), with EC50 values at 24h of 19.63mgAgL-1, but they… Elsevier BV	2017-09-01
Layout Optimisation of Wave Energy Converter Arrays Authors: Pau Ruiz,Vincenzo Nava,Mathew Topper,Pablo Minguela,Francesco Ferri,Jens Kofoed This paper proposes an optimisation strategy for the layout design of wave energy converter (WEC) arrays. Optimal layouts are sought so as to maximise the absorbed power given a minimum q-factor, the minimum distance between WECs, and an area of deployment. To guarantee an efficient optimisation, a… MDPI AG	2017-08-24
Preface Authors: Jose A. Lozano,Ke Tang,Xin Yao Springer Science and Business Media LLC	2017-08-19
Teaching stellar interferometry with polymer optical fibers Authors: Joseba Zubia,Agustín Sánchez-Lavega,Ricardo Hueso,María Asunción Illarramendi,Laura Arregui In this manuscript we show the design of a simple experiment that reproduces the operation of the Michelson stellar interferometer by using step-index polymer optical fibers. The emission of stellar sources, single or binary stars, has been simulated by the laser light emerging from the output… SPIE	2017-08-16
Adaptive Splitting Integrators for Enhancing Sampling Efficiency of Modified Hamiltonian Monte Carlo Methods in Molecular Simulation Authors: Elena Akhmatskaya,Mario Fernández-Pendás,Tijana Radivojević,J. M. Sanz-Serna The modified Hamiltonian Monte Carlo (MHMC) methods, i.e., importance sampling methods that use modified Hamiltonians within a Hybrid Monte Carlo (HMC) framework, often outperform in sampling efficiency standard techniques such as molecular dynamics (MD) and HMC. The performance of MHMC may be… American Chemical Society (ACS)	2017-08-02
Stationary waves and slowly moving features in the night upper clouds of Venus Authors: J. Peralta,R. Hueso,A. Sánchez-Lavega,Y. J. Lee,A. García Muñoz,T. Kouyama,H. Sagawa,T. M. Sato,G. Piccioni,S. Tellmann,T. Imamura,T. Satoh 15 pages, 4 figures, 6 supplementary figures Springer Science and Business Media LLC	2017-07-24
Different scenarios for survival analysis of evolutionary algorithms Authors: Jose A. Lozano,Roberto Santana Empirical analysis of evolutionary algorithms (EAs) behavior is usually approached by computing relatively simple descriptive statistics like mean fitness and mean number of evaluations to convergence, or more theoretically sound statistical tests for finding significant differences between… ACM	2017-07-01
1.5D Based Inversion of Logging-While-Drilling Resistivity Measurements in 3D Formations Authors: Pardo, D.,Torres-Verdín, C. Marie Sklodowska-Curie grant agreement No 644602 MTM2013-40824-P MTM2016-76329-R SEV-2013-0323 BERC 2014-2017 EAGE Publications BV	2017-06-12
Fast Simulation of 2.5D LWD Resistivity Tools Authors: Rodríguez-Rozas, A.,Pardo, D.,Torres-Verdín, C. As a first step towards the fast inversion of geophysical data, in this work we focus on the rapid simulations of 2.5D logging-while-drilling (LWD) borehole resistivity measurements. Given a commercial logging instrument configuration, we calibrate the FE method offline with respect to (i) the… EAGE Publications BV	2017-06-12
A novel Fireworks Algorithm with wind inertia dynamics and its application to traffic forecasting Authors: Manuel Velez,Javier Del Ser,Ibai Laña Fireworks Algorithm (FWA) is a recently contributed heuristic optimization method that has shown a promising performance in applications stemming from different domains. Improvements to the original algorithm have been designed and tested in the related literature. Nonetheless, in most of such… IEEE	2017-06-01
A square lattice probability model for optimising the Graph Partitioning Problem Authors: Josu Ceberio,Jose A. Lozano,Alexander Mendiburu Estimation of Distribution Algorithms have proved to be very competitive for solving combinatorial and continuous optimisation problems. However, there are problems for which they have not been extensively developed: we refer to constrained optimisation problems. Existing proposals approach these… IEEE	2017-06-01
A local search method for graph clustering heuristics based on partitional Distribution learning Authors: Itziar Landa-Torres,Javier Del Ser,Diana Manjarres The community structure of complex networks reveals hidden relationships in the organization of their constituent nodes. Indeed, many practical problems stemming from different fields of knowledge such as Biology, Sociology, Chemistry and Computer Science can be modeled as a graph. Therefore, graph… IEEE	2017-06-01
Are we generating instances uniformly at random? Authors: Alexander Mendiburu,Josu Ceberio,Jose A. Lozano In evolutionary computation, it is common practice to use sets of instances as test-beds for evaluating and comparing the performance of new optimisation algorithms. In some cases, real-world instances are available, and, thus, they are used to constitute the experimental benchmark. Unfortunately,… IEEE	2017-06-01