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
Mooring system monitoring of offshore renewable energy floating platforms
Authors: Touzon I.,Garcia-Corcuera A.,Nava V.,Rodriguez R.,de Miguel B.
An appropriate schedule of the operations for the maintenance (both long and short term) of offshore renewable energy devices can be a crucial key factor for assessing the economic viability of marine energy projects. Moreover, floating devices suffer from a higher uncertainty in the determination…
CRC Press/Balkema
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
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
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)
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
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
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, to date, there are no industrially consolidated techniques that allow us fast and in-situ analysis of the chemical composition of the slag, as in the case of steel with optical…
Institute of Electrical and Electronics Engineers (IEEE)
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
Big Data for transportation and mobility: recent advances, trends and challenges
Authors: Miren Nekane Bilbao,Javier Del Ser,Javier Del Ser,Sergio Campos-Cordobés,Ana I. Torre-Bastida,Maitena Ilardia,Ibai Laña
Big Data is an emerging paradigm and has currently become a strong attractor of global interest, specially within the transportation industry. The combination of disruptive technologies and new concepts such as the Smart City upgrades the transport data life cycle. In this context, Big Data is…
Institution of Engineering and Technology (IET)
Hill-Climbing Algorithm: Let's Go for a Walk Before Finding the Optimum
Authors: Alexander Mendiburu,Jose A. Lozano,Leticia Hernando
Local search algorithms are one of the most developed metaheuristics to solve combinatorial optimisation problems. Particularly, hill-climbing algorithms are simple but effective techniques that have been extensively used to deal with this kind of problems. These algorithms draw paths through the…
IEEE
A strategy for self-adjointness of Dirac operators: Applications to the MIT bag model and $\delta$-shell interactions
Authors: Thomas Ourmières-Bonafos,Luis Vega
We develop an approach to prove self-adjointness of Dirac operators with boundary or transmission conditions at a $\mathcal{C}^2$-compact surface without boundary. To do so we are lead to study the layer potential induced by the Dirac system as well as to define traces in a weak sense for functions…
Universitat Autonoma de Barcelona
DRED: An evolutionary diversity generation method for concept drift adaptation in online learning environments
Authors: Javier Del Ser,Javier Del Ser,Jesus L. Lobo,Miren Nekane Bilbao,Sancho Salcedo-Sanz,Cristina Perfecto
Abstract Nowadays fast-arriving information flows lay the basis of many data mining applications. Such data streams are usually affected by non-stationary events that eventually change their distribution (concept drift), causing that predictive models trained over these data become obsolete and…
Elsevier BV
A Numerical 1.5D Method for the Rapid Simulation of Geophysical Resistivity Measurements
Authors: Mostafa Shahriari,Sergio Rojas,David Pardo,Angel Rodríguez-Rozas,Shaaban A. Bakr,Victor M. Calo,Ignacio Muga
In some geological formations, borehole resistivity measurements can be simulated using a sequence of 1D models. By considering a 1D layered media, we can reduce the dimensionality of the problem from 3D to 1.5D via a Hankel transform. The resulting formulation is often solved via a semi-analytic…
MDPI AG
Mooring System Design Approach: A Case Study for MARMOK-A Floating OWC Wave Energy Converter
Authors: Touzon I.,De Miguel B.,Nava V.,Petuya V.,Mendikoa I.,Boscolo F.
This paper presents a methodology and a flowchart of steps to take for a, consistent and rapidly convergent design of catenary mooring systems. It is subsequently applied for a floating Oscillating Water Column WEC MARMOK-A developed by Oceantec Energías Marinas, in order to fulfill the technical…
American Society of Mechanical Engineers
Optimal design of Microgrid’s network topology and location of the distributed renewable energy resources using the Harmony Search algorithm
Authors: R. Mallol-Poyato,Carlos Camacho-Gómez,Sancho Salcedo-Sanz,Javier Del Ser,Javier Del Ser,Silvia Jiménez-Fernández
In this paper, we tackle the joint optimization of the network topology and the optimal location of distributed renewable energy resources in a Microgrid (MG). The MG network topology optimization problem is focused on obtaining network deployments with minimal cost, whereas the location of…
Springer Science and Business Media LLC
Two datasets of defect reports labeled by a crowd of annotators of unknown reliability
Authors: Jerónimo Hernández-González,Jose A. Lozano,Jose A. Lozano,Rachel Harrison,Daniel Rodriguez,Iñaki Inza
Classifying software defects according to any defined taxonomy is not straightforward. In order to be used for automatizing the classification of software defects, two sets of defect reports were collected from public issue tracking systems from two different real domains. Due to the lack of a…
Elsevier BV
Refined Isogeometric Analysis for a preconditioned conjugate gradient solver
Authors: Lisandro Dalcin,Lisandro Dalcin,Victor M. Calo,Victor M. Calo,Victor M. Calo,Daniel Garcia,David Pardo,David Pardo,David Pardo
Starting from a highly continuous Isogeometric Analysis (IGA) discretization, refined Isogeometric Analysis (rIGA) introduces $C^0$ hyperplanes that act as separators for the direct LU factorization solver. As a result, the total computational cost required to solve the corresponding system of…
Elsevier BV
Scientific rationale for Uranus and Neptune in situ explorations
Authors: Ricardo Hueso,Fabien Borget,B. Brugger,Louis Le Sergeant d'Hendecourt,Jean-Baptiste Renard,David H. Atkinson,Athena Coustenis,Sébastien Charnoz,Julianne I. Moses,Thomas Ronnet,Michel Dobrijevic,Agustín Sánchez-Lavega,T. Encrenaz,O. Mousis,E.…
The ice giants Uranus and Neptune are the least understood class of planets in our solar system but the most frequently observed type of exoplanets. Presumed to have a small rocky core, a deep interior comprising ~70% heavy elements surrounded by a more dilute outer envelope of H2 and He, Uranus…
Elsevier BV
