Publications

Displaying 701 - 725 of 1227

Publication	Date
Can thoracic impedance monitor the depth of chest compressions during out-of-hospital cardiopulmonary resuscitation? Authors: Jesus Ruiz,Elisabete Aramendi,Erik Alonso,Mohamud Daya,James K. Russell,Digna M. González-Otero,Sofía Ruiz de Gauna,Unai Ayala To analyze the relationship between the depth of the chest compressions and the fluctuation caused in the thoracic impedance (TI) signal in out-of-hospital cardiac arrest (OHCA). The ultimate goal was to evaluate whether it is possible to identify compressions with inadequate depth using… Elsevier BV	2014-05-01
Predictive score for mortality in patients with COPD exacerbations attending hospital emergency departments Authors: Quintana, José María,Esteban, Cristóbal,Unzurrunzaga, Anette,García Gutiérrez, Susana,González, Nerea,Barrio, Irantzu,Arostegui, Inmaculada,Lafuente, Iratxe,Baré, Marisa,Fernández de Larrea-Baz, Nerea,Vidal, Silvia,Estirado Vera, Cristina,Gea Guiral,… Limited information is available about predictors of short-term outcomes in patients with exacerbation of chronic obstructive pulmonary disease (eCOPD) attending an emergency department (ED). Such information could help stratify these patients and guide medical decision-making. The aim of this… Springer Science and Business Media LLC	2014-04-23
A Distance-Based Ranking Model Estimation of Distribution Algorithm for the Flowshop Scheduling Problem Authors: Alexander Mendiburu,Josu Ceberio,Ekhine Irurozki,Jose A. Lozano The aim of this paper is two-fold. First, we introduce a novel general estimation of distribution algorithm to deal with permutation-based optimization problems. The algorithm is based on the use of a probabilistic model for permutations called the generalized Mallows model. In order to prove the… Institute of Electrical and Electronics Engineers (IEEE)	2014-04-01
The long‐term steady motion of Saturn's hexagon and the stability of its enclosed jet stream under seasonal changes Authors: Sánchez-Lavega, A.,del Río-Gaztelurrutia, T.,Hueso, R.,Pérez-Hoyos, S.,García-Melendo, E.,Antuñano, A.,Mendikoa, I.,Rojas, J. F.,Lillo, J.,Barrado-Navascués, D.,Gomez-Forrellad, J. M.,Go, C.,Peach, D.,Barry, T.,Milika, D. P.,Nicholas, P.,Wesley, A.,Team… AbstractWe investigate the long‐term motion of Saturn's north pole hexagon and the structure of its associated eastward jet, using Cassini imaging science system and ground‐based images from 2008 to 2014. We show that both are persistent features that have survived the long polar night, the jet… American Geophysical Union (AGU)	2014-03-07
Random Walks for Knowledge-Based Word Sense Disambiguation Authors: Eneko Agirre,Aitor Soroa,Oier Lopez de Lacalle Word Sense Disambiguation (WSD) systems automatically choose the intended meaning of a word in context. In this article we present a WSD algorithm based on random walks over large Lexical Knowledge Bases (LKB). We show that our algorithm performs better than other graph-based methods when run on a… MIT Press - Journals	2014-03-01
A novel multi-objective algorithm for the optimal placement of wind turbines with cost and yield production criteria Authors: Itziar Landa-Torres,Sergio Gil-Lopez,Valentin Sanchez,Diana Manjarres,Javier Del Ser,Nicolaz Guidon,Naima Vande Walle During the last years wind energy has experimented a significant growth in comparison with other types of renewable energy sources. Accordingly, the number of wind farms has increased sharply to become one of the most developed worldwide infrastructures. Unfortunately, the high number of… IEEE	2014-03-01
3D hp-adaptive finite element simulations of bend, step, and magic-T electromagnetic waveguide structures Authors: Sergio Llorente-Romano,David Pardo,David Pardo,Ignacio Gomez-Revuelto,Luis E. Garcia-Castillo Metallic rectangular waveguides are often the preferred choice on telecommunication systems and medical equipment working on the upper microwave and millimeter wave frequency bands due to the simplicity of its geometry, low losses, and the capacity to handle high powers. Waveguide translational… Elsevier BV	2014-03-01
On the fatigue behavior of support structures for offshore wind turbines Authors: Felice Arena,Giuseppe Failla,A. Santini,Natale Alati,Vincenzo Nava It is believed that offshore wind farms may satisfy an increasing portion of the energy demand in the next years. This paper presents a comparative study of the fatigue performances of tripod and jacket steel support structures for offshore wind turbines in waters of intermediate depth (20-50 m). A… Techno-Press	2014-02-25
A fast implementation of the first fit contiguous partitioning strategy for cubic topologies Authors: Jose A. Lozano,Jose Miguel-Alonso,Jose Antonio Pascual SUMMARYIn this paper, we propose and evaluate improved first fit (IFF), a fast implementation of the first fit contiguous partitioning strategy. It has been devised to accelerate the process of finding contiguous partitions in space‐shared parallel computers in which the nodes are arranged forming… Wiley	2014-02-12
Influence of changes in physical activity on frequency of hospitalization in chronic obstructive pulmonary disease Authors: Susana Aizpiri,José M. Quintana,Inmaculada Arostegui,Myriam Aburto,Luis V. Basualdo,Alberto Capelastegui,Javier Moraza,Cristóbal Esteban AbstractBackground and objectiveTo evaluate whether changes in regular physical activity (PA) in patients with chronic obstructive pulmonary disease (COPD) affect the rate of hospitalizations for COPD exacerbation (eCOPD).MethodsFive hundred forty‐three ambulatory clinic patients being treated for… Wiley	2014-02-02
Assisting in search heuristics selection through multidimensional supervised classification: A case study on software testing Authors: Alexander Mendiburu,Jose A. Lozano,Iñaki Inza,Ramón Sagarna A fundamental question in the field of approximation algorithms, for a given problem instance, is the selection of the best (or a suitable) algorithm with regard to some performance criteria. A practical strategy for facing this problem is the application of machine learning techniques. However,… Elsevier BV	2014-02-01
Relativistic Hardy Inequalities in Magnetic Fields Authors: Nicola Visciglia,Luca Fanelli,Luis Vega,Luis Vega We deal with Dirac operators with external homogeneous magnetic fields. Hardy-type inequalities related to these operators are investigated: for a suitable class of transversal magnetic fields, we prove a Hardy inequality with the same best constant as in the free case. This leaves naturally open… Springer Science and Business Media LLC	2014-01-22
Iterative Probabilistic Tree Search for the Minimum Common String Partition Problem Authors: Christian Blum,Jose A. Lozano,Pedro Pinacho Davidson,Pedro Pinacho Davidson The minimum common string partition problem is an NP-hard combinatorial optimization problem with applications in computational biology. In this work we propose an iterative probabilistic tree search algorithm for tackling this problem. By means of an extensive experimental evaluation we show the… Springer International Publishing	2014-01-01
Rhythm Analysis during Cardiopulmonary Resuscitation: Past, Present, and Future Authors: Ruiz de Gauna, Sofia,Irusta, Unai,Ruiz, Jesus,Ayala, Unai,Aramendi, Elisabete,Eftestøl, Trygve Survival from out-of-hospital cardiac arrest depends largely on two factors: early cardiopulmonary resuscitation (CPR) and early defibrillation. CPR must be interrupted for a reliable automated rhythm analysis because chest compressions induce artifacts in the ECG. Unfortunately, interrupting CPR… Hindawi Limited	2014-01-01
Learning Maximum Weighted (k+1)-Order Decomposable Graphs by Integer Linear Programming Authors: Aritz Pérez,Jose A. Lozano,Christian Blum,Christian Blum This work is focused on learning maximum weighted graphs subject to three structural constraints: (1) the graph is decomposable, (2) it has a maximum clique size of k + 1, and (3) it is coarser than a given maximum k-order decomposable graph. After proving that the problem is NP-hard we give a… Springer International Publishing	2014-01-01
A Novel Harmony Search Algorithm for One-Year-Ahead Energy Demand Estimation Using Macroeconomic Variables Authors: Javier Del Ser,Jose A. Portilla-Figueras,Sancho Salcedo-Sanz,Miren Nekane Bilbao,Jesús Muñoz-Bulnes In this paper we tackle a problem of one-year ahead energy demand estimation from macroeconomic variables. A modified Harmony Search (HS) algorithm is proposed to this end, as one of the novelties of the paper. The modifications on the proposed HS include a hybrid encoding, with a binary part to… Springer International Publishing	2014-01-01
On Interlinking Linked Data Sources by Using Ontology Matching Techniques and the Map-Reduce Framework Authors: Ana I. Torre-Bastida,Javier Del Ser,David Camacho,Esther Villar-Rodriguez,Marta González-Rodríguez Interlinking different data sources has become a crucial task due to the explosion of diverse, heterogeneous information repositories in the so-called Web of Data. In this paper an approach to extract relationships between entities existing in huge Linked Data sources is presented. Our approach… Springer International Publishing	2014-01-01
Gene–Gene Interactions Detection Using a Two-stage Model Authors: Jae Hoon Sul,Jose A. Lozano,Eleazar Eskin,Zhanyong Wang,Sagi Snir Genome-wide association studies (GWAS) have discovered numerous loci involved in genetic traits. Virtually all studies have reported associations between individual single nucleotide polymorphisms (SNPs) and traits. However, it is likely that complex traits are influenced by interaction of multiple… Mary Ann Liebert Inc	2014-01-01
Optimization of Application Placement Towards a Greener Cloud Infrastructure Authors: Jose Antonio Pascual,Tania Lorido-Botran,Jose A. Lozano,Jose Miguel-Alonso Cloud infrastructures are designed to simultaneously service many, diverse applications that consist of collections of Virtual Machines (VMs). The policy used to map applications onto physical servers (placement policy) has important effects in terms of application performance and resource… Springer Berlin Heidelberg	2014-01-01
Implementing Recommendations in the PATHS System Authors: Mark M. Hall,Eneko Agirre,Arantxa Otegi,Paul Clough In this paper we describe the design and implementation of non-personalized recommendations in the PATHS system. This system allows users to explore items from Europeana in new ways. Recommendations of the type “people who viewed this item also viewed this item” are powered by pairs of viewed items… Springer International Publishing	2014-01-01
Automatically Adapted Perfectly Matched Layers for Problems with High Contrast Materials Properties Authors: Alvarez-Aramberri, J.,Pardo, D.,Barucq, H. Abstract For the simulation of wave propagation problems, it is necessary to truncate the computational domain. Perfectly Matched Layers are often employed for that purpose, especially in high contrast layered materials where absorbing boundary conditions are difficult to design. In here, we… Elsevier BV	2014-01-01
UBC entity recognition and disambiguation at ERD 2014 Authors: Ander Barrena,Eneko Agirre,Aitor Soroa This paper describes the system developed at the University of the Basque Country (UBC) for the Entity Recognition and Disambiguation Challenge (ERD 2014). We developed a single system for both long and short tracks. We implemented a very basic mention detection component and complement it with a… ACM Press	2014-01-01
Computer Software for Understanding Resonances and Resonance-Related Phenomena in Chemical Reactions Authors: Dmitri Sokolovski,Dmitri Sokolovski,Elena Akhmatskaya,Elena Akhmatskaya In numerical modelling of chemical reactions one calculates the scattering matrix for the required values of energy and angular momentum. Having done so, one still faces the non-trivial task of extracting detailed information about the reaction mechanism. We discuss the methods and numerical tools… Springer International Publishing	2014-01-01
Customized Selection in Estimation of Distribution Algorithms Authors: Jose A. Lozano,Alexander Mendiburu,Roberto Santana Selection plays an important role in estimation of distribution algorithms. It determines the solutions that will be modeled to represent the promising areas of the search space. There is a strong relationship between the strength of selection and the type and number of dependencies that are… Springer International Publishing	2014-01-01
High latitude gravity waves at the Venus cloud tops as observed by the Venus Monitoring Camera on board Venus Express Authors: Arianna Piccialli,Arianna Piccialli,Agustín Sánchez-Lavega,Håkan Svedhem,Wojciech J. Markiewicz,O. S. Shalygina,Dmitrij V. Titov,Javier Peralta International audience; High resolution images of Venus Northern hemisphere obtained with the Venus Monitoring Camera (VMC/VEx) allow studying small-scale dynamical phenomena at the cloud tops (∼62-70 km altitude) including features like wave trains. A systematic visual search of these waves was… Elsevier BV	2014-01-01