Publications

Displaying 476 - 500 of 1351

Publication	Date
Fast 2.5D finite element simulations of borehole resistivity measurements Authors: Carlos Torres-Verdín,Ángel Rodríguez-Rozas,David Pardo,David Pardo,David Pardo We develop a rapid 2.5-dimensional (2.5D) finite element method for simulation of borehole resistivity measurements in transversely isotropic (TI) media. The method combines arbitrary high-order $H^1$ - and $H$ (curl)-conforming spatial discretizations. It solves problems where material properties… Springer Science and Business Media LLC	2018-05-24
Haze and cloud structure of Saturn's North Pole and Hexagon Wave from Cassini/ISS imaging Authors: J.F. Sanz-Requena,S. Pérez-Hoyos,A. Sánchez-Lavega,A. Antuñano,Patrick G.J. Irwin Abstract In this paper we present a study of the vertical haze and cloud structure in the upper two bars of Saturn's Northern Polar atmosphere using the Imaging Science Subsystem (ISS) instrument onboard the Cassini spacecraft. We focus on the characterization of latitudes from 53° to 90° N. The… Elsevier BV	2018-05-01
On the imputation of missing data for road traffic forecasting: New insights and novel techniques Authors: Ignacio Olabarrieta,Javier Del Ser,Javier Del Ser,Manuel Velez,Ibai Laña Abstract Vehicle flow forecasting is of crucial importance for the management of road traffic in complex urban networks, as well as a useful input for route planning algorithms. In general traffic predictive models rely on data gathered by different types of sensors placed on roads, which… Elsevier BV	2018-05-01
QUANTUM COMPUTING: SIX KEY FACTORS TO UNDERSTAND THE FUTURE OF COMPUTATION Authors: Javier Del Ser Lorente,Esther Villar Rodriguez,Eneko Osaba Icedo The future of computing has been seen since its inception with the focus on the two objectives: more data and less energy. Continued advances in computer technology have allowed, since the 1960s, a steady and dizzying reduction in the size of transistors, which has translated into a faster process… UK Zhende Publishing Limited Company	2018-05-01
Finite element simulations of logging-while-drilling and extra-deep azimuthal resistivity measurements using non-fitting grids Authors: Théophile Chaumont-Frelet,David Pardo,David Pardo,David Pardo,Ángel Rodríguez-Rozas We propose a discretization technique using non-fitting grids to simulate magnetic field-based resistivity logging measurements. Non-fitting grids are convenient because they are simpler to generate and handle than fitting grids when the geometry is complex. On the other side, fitting grids have… Springer Science and Business Media LLC	2018-04-27
Revealing the Mechanism of Sodium Diffusion in Na_xFePO₄ Using an Improved Force Field Authors: Ariel Lozano,Bruno Escribano,Mauricio R. Bonilla,Javier Carrasco,Elena Akhmatskaya,Elena Akhmatskaya MTM2013-46553-C3-1-P ENE2016-81020-R SGI/IZO-SGIker UPV/EHU i2BASQUE academic network Barcelona Supercomputer Center American Chemical Society (ACS)	2018-04-02
Evaluation of chest compression artefact removal based on rhythm assessments made by clinicians Authors: Alonso, Erik,Aramendi, Elisabete,Irusta, Unai,Daya, Mohamud,Corcuera, Carlos,Lu, Yuanzheng,Idris, Ahamed H. To evaluate the performance of a state-of-the-art cardiopulmonary resuscitation (CPR) artefact suppression method by assessing to what extent the filtered electrocardiogram (ECG) can be correctly diagnosed by emergency medicine doctors.A total of 819 ECG segments were used. Each segment contained… Elsevier BV	2018-04-01
Cytotoxicity and cellular mechanisms of toxicity of CuO NPs in mussel cells in vitro and comparative sensitivity with human cells Authors: Katsumiti, A,Thorley, AJ,Arostegui, I,Reip, P,Valsami-Jones, E,Tetley, TD,Cajaraville, MP There is a need to assess human and ecosystem health effects of copper oxide nanoparticles (CuO NPs), extensively used in many industrial products. Here, we aimed to determine the cytotoxicity and cellular mechanisms involved in the toxicity of CuO NPs in mussel cells (hemocytes and gill cells) in… Elsevier BV	2018-04-01
The weighted independent domination problem: Integer linear programming models and metaheuristic approaches Authors: Christian Blum,Pedro Pinacho Davidson,Pedro Pinacho Davidson,Jose A. Lozano,Jose A. Lozano This work deals with the so-called weighted independent domination problem, which is an NP-hard combinatorial optimization problem in graphs. In contrast to previous work, this paper considers the problem from a non-theoretical perspective. The first contribution consists in the development of… Elsevier BV	2018-03-01
Combining statistical techniques to predict postsurgical risk of 1-year mortality for patients with colon cancer Authors: Arostegui, Inmaculada,Gonzalez, Nerea,Fernández-de-Larrea, Nerea,Lázaro-Aramburu, Santiago,Baré, Marisa,Redondo, Maximino,Sarasqueta, Cristina,Garcia-Gutierrez, Susana,Quintana, José M,REDISSEC CARESS-CCR Group Colorectal cancer is one of the most frequently diagnosed malignancies and a common cause of cancer-related mortality. The aim of this study was to develop and validate a clinical predictive model for 1-year mortality among patients with colon cancer who survive for at least 30 days after surgery.… Informa UK Limited	2018-03-01
A New Dark Vortex on Neptune Authors: Michael H. Wong,Joshua Tollefson,Andrew I. Hsu,Imke de Pater,Amy A. Simon,Ricardo Hueso,Agustín Sánchez-Lavega,Lawrence Sromovsky,Patrick Fry,Statia Luszcz-Cook,Heidi Hammel,Marc Delcroix,Katherine de Kleer,Glenn S. Orton,Christoph Baranec Abstract An outburst of cloud activity on Neptune in 2015 led to speculation about whether the clouds were convective in nature, a wave phenomenon, or bright companions to an unseen dark vortex (similar to the Great Dark Spot studied in detail by Voyager 2). The Hubble Space… American Astronomical Society	2018-02-15
An efficient evolutionary algorithm for the orienteering problem Authors: Gorka Kobeaga,Gorka Kobeaga,Jose A. Lozano,Jose A. Lozano,María Merino MTM2015-65317-P, TIN2016-78365-R, IT-609-13, IT-928-16, UFI BETS 2011 Elsevier BV	2018-02-01
A heuristic approach to the multicriteria design of IaaS cloud infrastructures for Big Data applications Authors: Javier Del Ser,Javier Del Ser,Maria Arostegi,Ana I. Torre-Bastida,Miren Nekane Bilbao AbstractThe rapid growth of new computing paradigms such as Cloud Computing and Big Data has unleashed great opportunities for companies to shift their business model towards a fully digital strategy. A major obstacle in this matter is the requirement of highly specialized ICT infrastructures that… Wiley	2018-01-12
Solving the Open-Path Asymmetric Green Traveling Salesman Problem in a Realistic Urban Environment Authors: Iztok Fister,Eneko Osaba,Javier Del Ser,Javier Del Ser,Akemi Gálvez,Akemi Gálvez,Andrés Iglesias,Andrés Iglesias,Miren Nekane Bilbao In this paper, a driving route planning system for multi-point routes is designed and developed. The routing problem has modeled as an Open-Path and Asymmetric Green Traveling Salesman Problem (OAG-TSP). The main objective of the proposed OAG-TSP is to find a route between a fixed origin and… Springer International Publishing	2018-01-01
Cost-efficient deployment of multi-hop wireless networks over disaster areas using multi-objective meta-heuristics Authors: Javier Del Ser,Javier Del Ser,Miren Nekane Bilbao,Sancho Salcedo-Sanz,Cristina Perfecto,Jose A. Portilla-Figueras Nowadays there is a global concern with the growing frequency and magnitude of natural disasters, many of them associated with climate change at a global scale. When tackled during a stringent economic era, the allocation of resources to efficiently deal with such disaster situations (e.g.,… Elsevier BV	2018-01-01
Differential Evolution for Association Rule Mining Using Categorical and Numerical Attributes Authors: Javier Del Ser,Javier Del Ser,Andrés Iglesias,Andrés Iglesias,Eneko Osaba,Akemi Gálvez,Akemi Gálvez,Iztok Fister Association rule mining is a method for identification of dependence rules between features in a transaction database. In the past years, researchers applied the method using features consisting of categorical attributes. Rarely, numerical attributes were used in these studies. In this paper, we… Springer International Publishing	2018-01-01
Bat Algorithm Swarm Robotics Approach for Dual Non-cooperative Search with Self-centered Mode Authors: Suárez, Patricia,Gálvez, Akemi,Fister, Iztok,Fister, Iztok,Osaba, Eneko,Del Ser, Javier,Iglesias, Andrés This paper presents a swarm robotics approach for dual non-cooperative search, where two robotic swarms are deployed within a map with the goal to find their own target point, placed at an unknown location of the map. We consider the self-centered mode, in which each swarm tries to solve its own… Springer International Publishing	2018-01-01
Positioning and Digital Maps Authors: Rafael Toledo-Moreo,José M. Armingol,Miguel Clavijo,Arturo de la Escalera,Javier del Ser,Felipe Jiménez,Basam Musleh,José E. Naranjo,Ignacio (Iñaki) Olabarrieta,Javier Sánchez-Cubillo A reliable positioning system is essential for the development of intelligent vehicles. This chapter provides an overview of different technologies and techniques that are crucial to understand modern positioning systems onboard road vehicles. It is written for the purpose of serving as a guide to… Elsevier BV	2018-01-01
Community Detection in Weighted Directed Networks Using Nature-Inspired Heuristics Authors: Osaba, Eneko,Del Ser, Javier,Camacho, David,Galvez, Akemi,Iglesias, Andres,Fister, Iztok,Fister, Iztok Finding groups from a set of interconnected nodes is a recurrent paradigm in a variety of practical problems that can be modeled as a graph, as those emerging from Social Networks. However, finding an optimal partition of a graph is a computationally complex task, calling for the development of… Springer International Publishing	2018-01-01
On the Design and Tuning of Machine Learning Models for Language Toxicity Classification in Online Platforms Authors: William Miller,Javier Del Ser,Javier Del Ser,Maciej Rybinski,José F. Aldana-Montes,Miren Nekane Bilbao One of the most concerning drawbacks derived from the lack of supervision in online platforms is their exploitation by misbehaving users to deliver offending (toxic) messages while remaining unknown themselves. Given the huge volumes of data handled by these platforms, the detection of toxicity in… Springer International Publishing	2018-01-01
A Bio-inspired Approach for Collaborative Exploration with Mobile Battery Recharging in Swarm Robotics Authors: Javier Sánchez-Cubillo,Akemi Gálvez,Akemi Gálvez,Maria Carrillo,Miren Nekane Bilbao,Javier Del Ser,Javier Del Ser,Eneko Osaba,Andrés Iglesias,Andrés Iglesias,Ian Gallardo Swarm Robotics are widely conceived as the development of new computationally efficient tools and techniques aimed at easing and enhancing the coordination of multiple robots towards collaboratively accomplishing a certain mission or task. Among the different criteria under which the performance of… Springer International Publishing	2018-01-01
Extending the Speed-Constrained Multi-objective PSO (SMPSO) with Reference Point Based Preference Articulation Authors: Antonio J. Nebro,Carlos A. Coello Coello,Javier Del Ser,Javier Del Ser,Juan J. Durillo,José García-Nieto,Antonio Benítez-Hidalgo,José F. Aldana-Montes,Cristóbal Barba-González The Speed-constrained Multi-objective PSO (SMPSO) is an approach featuring an external bounded archive to store non-dominated solutions found during the search and out of which leaders that guide the particles are chosen. Here, we introduce SMPSO/RP, an extension of SMPSO based on the idea of… Springer International Publishing	2018-01-01
Automatic Fitting of Feature Points for Border Detection of Skin Lesions in Medical Images with Bat Algorithm Authors: Eneko Osaba,Javier Del Ser,Javier Del Ser,Andrés Iglesias,Andrés Iglesias,Akemi Gálvez,Akemi Gálvez,Iztok Fister This paper addresses the problem of automatic fitting of feature points for border detection of skin lesions. This problem is an important task in segmentation of dermoscopy images for semi-automatic early diagnosis of melanoma and other skin lesions. Given a set of feature points selected by a… Springer International Publishing	2018-01-01
Simulation of floating platforms for marine energy generation Authors: Moragues Ginard M.,Degirmenci N. C.,Castanon Quiroz D.,Leoni M.,Jansson J.,Nava V.,Krishnasamy E.,Hoffman J. The goal of this work is to study the dynamics of floating platforms that are designed for marine energy generation. This work is done in collaboration with Tecnalia R&I, a company settled in the Basque Country which designs this kind of platforms. To our purpose we present a method for the… International Conference on Computational Fluid Dynamics 2018	2018-01-01
Task Classification Using Topological Graph Features for Functional M/EEG Brain Connectomics Authors: Miren Nekane Bilbao,Eneko Osaba,Javier Del Ser,Javier Del Ser In the last few years the research community has striven to achieve a thorough understanding of the brain activity when the subject under analysis undertakes both mechanical tasks and purely mental exercises. One of the most avant-garde approaches in this regard is the discovery of connectivity… Springer International Publishing	2018-01-01