Publications

Displaying 376 - 400 of 1227

Publication	Date
Atomistic Insight into Ion Transport and Conductivity in Ga/Al-Substituted Li₇La₃Zr₂O₁₂ Solid Electrolytes Authors: Anna Llordes,Fabián A. García Daza,Javier Carrasco,Mauricio R. Bonilla,Elena Akhmatskaya,Elena Akhmatskaya ENE2016-81020-R (MINECO) American Chemical Society (ACS)	2018-12-12
Seasonal Deposition and Lifting of Dust on Mars as Observed by the Curiosity Rover Authors: Á. Vicente-Retortillo,G. M. Martínez,N. Renno,C. E. Newman,I. Ordonez-Etxeberria,M. T. Lemmon,M. I. Richardson,R. Hueso,A. Sánchez-Lavega AbstractIn situ measurements by the Curiosity rover provide a unique opportunity for studying the effects of dust on assets placed at the surface of Mars. Here we use in situ measurements of solar UV radiation to quantify the seasonal and interannual variability of dust accumulation on the sensor… Springer Science and Business Media LLC	2018-12-04
Device-Free People Counting in IoT Environments: New Insights, Results, and Open Challenges Authors: Iker Sobron,Javier Del Ser,Inaki Eizmendi,Manuel Velez In the last years multiple Internet of Things (IoT) solutions have been developed to detect, track, count, and identify human activity from people that do not carry any device nor participate actively in the detection process. When WiFi radio receivers are employed as sensors for device-free human… Institute of Electrical and Electronics Engineers (IEEE)	2018-12-01
Evolving Spiking Neural Networks for online learning over drifting data streams Authors: Jesus L. Lobo,Ibai Laña,Javier Del Ser,Miren Nekane Bilbao,Nikola Kasabov Nowadays huge volumes of data are produced in the form of fast streams, which are further affected by non-stationary phenomena. The resulting lack of stationarity in the distribution of the produced data calls for efficient and scalable algorithms for online analysis capable of adapting to such… Elsevier BV	2018-12-01
A beta‐binomial mixed‐effects model approach for analysing longitudinal discrete and bounded outcomes Authors: Josu Najera-Zuloaga,Dae-Jin Lee,Inmaculada Arostegui,Inmaculada Arostegui AbstractPatient‐reported outcomes (PROs) are currently being increasingly used as primary outcome measures in observational and experimental studies since they inform clinicians and researchers about the health‐status of patients and generate data to facilitate improved care. PROs usually appear as… Wiley	2018-11-27
Let nature decide its nature: On the design of collaborative hyperheuristics for decentralized ephemeral environments Authors: Aritz Pérez Martínez,Javier Del Ser,Javier Del Ser,Eneko Osaba,Miren Nekane Bilbao The research community has traditionally aimed at the derivation and development of metaheuristic solvers, suited to deal with problems of very diverse characteristics. Unfortunately, it is often the case that new metaheuristic techniques are presented and assessed in a reduced set of cases, mostly… Elsevier BV	2018-11-01
A novel technique to assess the quality of ventilation during pre-hospital cardiopulmonary resuscitation Authors: Yuanzheng Lu,Elisabete Aramendi,Elisabete Aramendi,Pamela Owens,Mary P. Chang,Andoni Elola,Ahamed H. Idris,Unai Irusta Devices that measure ventilation in the pre-hospital setting are deficient especially during early cardiopulmonary resuscitation (CPR) before placement of an advanced airway. Consequently, evidence is limited regarding the role of ventilation during early CPR and its effect on outcomes.To develop… Elsevier BV	2018-11-01
Multi-stage splitting integrators for sampling with modified Hamiltonian Monte Carlo methods Authors: Elena Akhmatskaya,Elena Akhmatskaya,Mario Fernández-Pendás,Jesús María Sanz-Serna,Tijana Radivojevic Modified Hamiltonian Monte Carlo (MHMC) methods combine the ideas behind two popular sampling approaches: Hamiltonian Monte Carlo (HMC) and importance sampling. As in the HMC case, the bulk of the computational cost of MHMC algorithms lies in the numerical integration of a Hamiltonian system of… Elsevier BV	2018-11-01
Multi-Objective Optimization of Bike Routes for Last-Mile Package Delivery with Drop-Offs Authors: Osaba, Eneko,Del Ser, Javier,Nebro, Antonio J.,Laña, Ibai,Bilbao, Miren Nekane,Sanchez-Medina, Javier J. This paper focuses on modeling and solving a last-mile package delivery routing problem with third-party drop-off points. The study is applicable to small or medium-sized delivery companies, which use bikes for performing the routes in an influence area bounded to a city. This routing setup has… IEEE	2018-11-01
A review on distance based time series classification Authors: Amaia Abanda,Amaia Abanda,Usue Mori,Jose A. Lozano,Jose A. Lozano Time series classification is an increasing research topic due to the vast amount of time series data that are being created over a wide variety of fields. The particularity of the data makes it a challenging task and different approaches have been taken, including the distance based approach. 1-NN… Springer Science and Business Media LLC	2018-11-01
NAUTILUS-DTU10 MW Floating Offshore Wind Turbine at Gulf of Maine: Public numerical models of an actively ballasted semisubmersible Authors: Galván, J,Sánchez-Lara, M J,Mendikoa, I,Pérez-Morán, G,Nava, V,Rodríguez-Arias, R This study presents two numerical multiphysics models of the NAUTILUS-10 floating support structure mounting the DTU10 MW Reference Wind Turbine at Gulf of Maine site, and analyses its dynamics. With the site conditions and the FAST model of the onshore turbine as the starting point, the floating… IOP Publishing	2018-10-01
A discrete water cycle algorithm for solving the symmetric and asymmetric traveling salesman problem Authors: Miren Nekane Bilbao,Javier Del Ser,Javier Del Ser,David Camacho,Ali Sadollah,Ali Sadollah,Eneko Osaba The water cycle algorithm (WCA) is a nature-inspired meta-heuristic recently contributed to the community in 2012, which finds its motivation in the natural surface runoff phase in water cycle process and on how streams and rivers flow into the sea. This method has been so far successfully applied… Elsevier BV	2018-10-01
Early Classification of Time Series by Simultaneously Optimizing the Accuracy and Earliness Authors: Usue Mori,Alexander Mendiburu,Sanjoy Dasgupta,Jose A. Lozano The problem of early classification of time series appears naturally in contexts where the data, of temporal nature, are collected over time, and early class predictions are interesting or even required. The objective is to classify the incoming sequence as soon as possible, while maintaining… Institute of Electrical and Electronics Engineers (IEEE)	2018-10-01
Asymptotic models for the electric potential across a highly conductive casing Authors: Victor Péron,Victor Péron,Aralar Erdozain,David Pardo,David Pardo,David Pardo International audience; We analyze a configuration that involves a steel-cased borehole, where the casing that covers the borehole is considered as a highly conductive thin layer. We develop an asymptotic method for deriving reduced problems capable of efficiently dealing with the numerical… Elsevier BV	2018-10-01
Spacecraft trajectory optimization: A review of models, objectives, approaches and solutions Authors: Josu Ceberio,Jose A. Lozano,Jose A. Lozano,Abolfazl Shirazi This article is a survey paper on solving spacecraft trajectory optimization problems. The solving process is decomposed into four key steps of mathematical modeling of the problem, defining the objective functions, development of an approach and obtaining the solution of the problem. Several… Elsevier BV	2018-10-01
The Rich Dynamics of Jupiter’s Great Red Spot from JunoCam: Juno Images Authors: Agustín Sánchez-Lavega,Scott Bolton,Ricardo Hueso,G. S. Orton,John H. Rogers,Fachreddin Tabataba-Vakili,Candice Hansen,Tom Momary,Gerald Eichstädt Abstract We have used high-resolution images obtained with JunoCam onboard the Juno spacecraft during its close flyby of Jupiter on 2017 July 11, to study the dynamics of the Great Red Spot (GRS) at the upper cloud level. We have measured the horizontal velocity and vorticity fields… American Astronomical Society	2018-09-18
ECG-based pulse detection during cardiac arrest using random forest classifier Authors: Andoni Elola,Unai Irusta,Erik Alonso,Elisabete Aramendi,Mohamud Daya,Javier Del Ser,Javier Del Ser Sudden cardiac arrest is one of the leading causes of death in the industrialized world. Pulse detection is essential for the recognition of the arrest and the recognition of return of spontaneous circulation during therapy, and it is therefore crucial for the survival of the patient. This paper… Springer Science and Business Media LLC	2018-09-13
Small impacts on the giant planet Jupiter Authors: R. Hueso,M. Delcroix,A. Sánchez-Lavega,S. Pedranghelu,G. Kernbauer,J. McKeon,A. Fleckstein,A. Wesley,J. M. Gómez-Forrellad,J. F. Rojas,J. Juaristi Context. Video observations of Jupiter obtained by amateur astronomers over the past 8 years have shown five flashes of light with durations of 1–2 s, each observed by at least two observers that were geographically separated. The first three of these events occurred on 3 June 2010, 20 August 2010… EDP Sciences	2018-09-01
On intermediate-scale open-sea experiments on floating offshore structures: Feasibility and application on a spar support for offshore wind turbines Authors: Carlo Ruzzo,Vincenzo Fiamma,Maurizio Collu,Giuseppe Failla,Vincenzo Nava,Felice Arena Abstract Experimental investigation of floating structures represents the most direct way for achieving their dynamic identification and it is particularly valuable for relatively new concepts, such as floating supports for offshore wind turbines, in order to fully understand their dynamic… Elsevier BV	2018-09-01
No time at the end of the tunnel Authors: Dmitri Sokolovski,Dmitri Sokolovski,Elena Akhmatskaya,Elena Akhmatskaya AbstractModern atto-second experiments seek to provide an insight into a long standing question: “how much time does a tunnelling particle spend in the barrier?” Traditionally, quantum theory relates this duration to the delay with which the particle emerges from the barrier. The link between these… Springer Science and Business Media LLC	2018-08-21
CCR-CARESS score for predicting operative mortality in patients with colorectal cancer Authors: M Baré,L Mora,N Torà,M J Gil,I Barrio,P Collera,D Suárez,M Redondo,A Escobar,N Fernández de Larrea,J M Quintana,M Redondo,F Rivas,E Briones,E Campano,A I Sotelo,F Medina,A Del Rey,M M Morales,S Gómez,M Baré,M Pont,N Torà,M J Alcántara,L Mora,M José Gil,M… Abstract Background The aim of this study was to assess factors associated with outcomes after surgery for colorectal cancer and to design and internally validate a simple score for predicting perioperative mortality… Oxford University Press (OUP)	2018-08-13
Fuzzy and Sample Entropies as Predictors of Patient Survival Using Short Ventricular Fibrillation Recordings during out of Hospital Cardiac Arrest Authors: Beatriz Chicote,Unai Irusta,Elisabete Aramendi,Raúl Alcaraz,José Joaquín Rieta,Iraia Isasi,Daniel Alonso,María del Mar Baqueriza,Karlos Ibarguren Optimal defibrillation timing guided by ventricular fibrillation (VF) waveform analysis would contribute to improved survival of out-of-hospital cardiac arrest (OHCA) patients by minimizing myocardial damage caused by futile defibrillation shocks and minimizing interruptions to cardiopulmonary… MDPI AG	2018-08-09
A New, Long-lived, Jupiter Mesoscale Wave Observed at Visible Wavelengths Authors: Amy A. Simon,Ricardo Hueso,Peio Iñurrigarro,Agustín Sánchez-Lavega,Raúl Morales-Juberías,Richard Cosentino,Leigh N. Fletcher,Michael H. Wong,Andrew I. Hsu,Imke de Pater,Glenn S. Orton,François Colas,Marc Delcroix,Damian Peach,Josep-María Gómez-Forrellad Abstract Small-scale waves were observed along the boundary between Jupiter’s North Equatorial Belt (NEB) and North Tropical Zone, ∼16.°5 N planetographic latitude in Hubble Space Telescope data in 2012 and throughout 2015–2018, observable at all wavelengths from the UV to the near-… American Astronomical Society	2018-08-01
Ladle Furnace Slag Characterization Through Hyperspectral Reflectance Regression Model for Secondary Metallurgy Process Optimization Authors: Artzai Picon,Asier Vicente,Sergio Rodriguez-Vaamonde,Jorge Armentia,Jose Antonio Arteche,Inaki Macaya In steelmaking process, close control of slag evolution is as important as control of steel composition. However, there are no industrially consolidated techniques that allow in-situ analysis of the slag chemical composition, as in the case of steel with OES-spectrometers. In this work, a method to… Institute of Electrical and Electronics Engineers (IEEE)	2018-08-01
Estimating attraction basin sizes of combinatorial optimization problems Authors: Anne Elorza,Leticia Hernando,Alexander Mendiburu,Jose A. Lozano [EN]Given a particular instance of a combinatorial optimization problem, the knowledge about the attraction basin sizes can help to analyze the difficulty encountered by local search algorithms while solving it. As calculating these sizes exhaustively is computationally intractable, we focus on… Springer Science and Business Media LLC	2018-07-20