Publications

Displaying 651 - 675 of 1307

Publication	Date
Assessment of the Performance of Imputation Techniques in Observational Studies with Two Measurements Authors: Urko Aguirre,Jose MarÃa Quintana,Inmaculada Arostegui,CristÃ³bal Esteban In observational studies with two measurements when the measured outcome pertains to a health related quality of life (HRQoL) variable, one motivation of the research may be to determine the potential predictors of the mean change of the outcome of interest. It is very common in such studies for… Lifescience Global	2015-08-19
Dandelion-Encoded Harmony Search Heuristics for Opportunistic Traffic Offloading in Synthetically Modeled Mobile Networks Authors: Perfecto, Cristina,Bilbao, Miren Nekane,Del Ser, Javier,Ferro, Armando,Salcedo-Sanz, Sancho The high data volumes being managed by and transferred through mobile networks in the last few years are the main rationale for the upsurge of research aimed at finding efficient technical means to offload exceeding traffic to alternative communication infrastructures with higher transmission… Springer Berlin Heidelberg	2015-08-09
A Harmony Search Approach for the Selective Pick-Up and Delivery Problem with Delayed Drop-Off Authors: Del Ser, Javier,Bilbao, Miren Nekane,Perfecto, Cristina,Salcedo-Sanz, Sancho In the last years freight transportation has undergone a sharp increase in the scales of its underlying processes and protocols mainly due to the ever-growing community of users and the increasing number of on-line shopping stores. Furthermore, when dealing with the last stage of the shipping chain… Springer Berlin Heidelberg	2015-08-09
Six years of Venus winds at the upper cloud level from UV, visible and near infrared observations from VIRTIS on Venus Express Authors: Agustín Sánchez-Lavega,I. Garate-Lopez,Javier Peralta,T. V. Bandos,Ricardo Hueso 38 pages, 16 figures 2 tables, 1 appendix Elsevier BV	2015-08-01
Semi-analytical response of acoustic logging measurements in frequency domain Authors: Muga, Ignacio,Pardo, David,Matuszyk, Paweł J.,Torres-Verdín, Carlos This work proposes a semi-analytical method for simulation of the acoustic response of multipole eccentered sources in a fluid-filled borehole. Assuming a geometry that is invariant with respect to the azimuthal and vertical directions, the solution in frequency domain is expressed in terms of a… Elsevier BV	2015-08-01
Direct solvers performance on h-adapted grids Authors: Paszynski, M.,Pardo, D.,Calo, Victor We analyse the performance of direct solvers when applied to a system of linear equations arising from an $h$-adapted, $C^0$ finite element space. Theoretical estimates are derived for typical $h$-refinement patterns arising as a result of a point, edge, or face singularity as well as boundary… Elsevier BV	2015-08-01
Non-Markovian models of the growth of a polymer chain Authors: Elena Akhmatskaya,Elena Akhmatskaya,Simone Rusconi,José M. Asua,Dmitri Sokolovski,Dmitri Sokolovski Using simple exactly solvable models, we show that event-dependent time delays may lead to significant non-Poisson effects in the statistics of polymer chain growth. The results are confirmed by stochastic simulation of various growth scenarios. Our interest in mathematical aspects of non-Markovian… The Royal Society	2015-08-01
The Total Cost of Water-Related Disasters Authors: BALBI, Stefano,GIUPPONI, Carlo,Olshewski, R.,MOJTAHED, Vahid Abstract Water-related disasters have caused increasing losses in recent years. Efficient risk reduction policies require accurate assessment approaches, with careful consideration of costs, beyond material damages, which are commonly used in practice. Faced with possible risk… Walter de Gruyter GmbH	2015-08-01
Effect of various dietary regimens on oral challenge with Mycobacterium avium subsp. paratuberculosis in a rabbit model Authors: Maider Mateo-Abad,Joseba M. Garrido,Rakel Arrazuria,Ramón A. Juste,Inmaculada Arostegui,Inmaculada Arostegui,Elena Molina,Natalia Elguezabal Rabbits are susceptible to infection by Mycobacterium avium subspecies paratuberculosis (MAP) in both wildlife and experimental conditions. Under the hypotheses that nutrient balance might influence the establishment of infection, we designed an experiment where MAP intestinal colonization was… Elsevier BV	2015-08-01
An integrated approach of flood risk assessment in the eastern part of Dhaka City Authors: Gain, A.,Mojtahed, V.,Biscaro, C.,Balbi, S.,Giupponi, C. The flood risk is a function of the flood hazard, the exposed values, and their vulnerability. In addition to extreme hydrological events, different anthropogenic activities such as extensive urbanization and land use play an important role in producing catastrophic floods. Considerations of both… Springer Science and Business Media LLC	2015-07-25
Kernels of Mallows Models for Solving Permutation-based Problems Authors: Josu Ceberio,Alexander Mendiburu,Jose A. Lozano Recently, distance-based exponential probability models, such as Mallows and Generalized Mallows, have demonstrated their validity in the context of estimation of distribution algorithms (EDAs) for solving permutation problems. However, despite their successful performance, these models are… ACM	2015-07-11
High-accuracy adaptive modeling of the energy distribution of a meniscus-shaped cell culture in a Petri dish Authors: Ignacio Gomez-Revuelto,David Pardo,David Pardo,David Pardo,Luis E. Garcia-Castillo Cylindrical Petri dishes embedded in a rectangular waveguide and exposed to a polarized electromagnetic wave are often used to grow cell cultures. To guarantee the success of these cultures, it is necessary to enforce that the specific absorption rate distribution is sufficiently high and uniform… Elsevier BV	2015-07-01
One-year-ahead energy demand estimation from macroeconomic variables using computational intelligence algorithms Authors: Salcedo-Sanz, Sancho,Muñoz-Bulnes, J.,Portilla-Figueras, Jose Antonio,Del Ser, Javier Abstract This paper elaborates on a problem of one-year ahead estimation of energy demand based on macroeconomic variables. To this end, two different Computational Intelligence approaches are herein evaluated: (1) a modified Harmony Search (HS) optimization algorithm with an exponential… Elsevier BV	2015-07-01
Dealing with the evaluation of supervised classification algorithms Authors: Jose A. Lozano,Iñaki Inza,Guzmán Santafé Performance assessment of a learning method related to its prediction ability on independent data is extremely important in supervised classification. This process provides the information to evaluate the quality of a classification model and to choose the most appropriate technique to solve the… Springer Science and Business Media LLC	2015-06-30
Mechanisms of Toxicity of Ag Nanoparticles in Comparison to Bulk and Ionic Ag on Mussel Hemocytes and Gill Cells Authors: Katsumiti Kodo Filho, Alberto,Gilliland, Douglas,Arostegui Madariaga, Inmaculada,Cajaraville Bereciartua, Miren Pilare Silver nanoparticles (Ag NPs) are increasingly used in many products and are expected to end up in the aquatic environment. Mussels have been proposed as marine model species to evaluate NP toxicity in vitro. The objective of this work was to assess the mechanisms of toxicity of Ag NPs on mussel… Public Library of Science (PLoS)	2015-06-10
Multi-view classification of psychiatric conditions based on saccades Authors: Roberto Santana,Alexander Mendiburu,Jose A. Lozano Graphical abstractDisplay Omitted HighlightsUsing saccadic information to classify different psychiatric conditions.Classifiers could be used to reduce the possible diagnoses for a given patient.Simple descriptors are extracted from the saccades.Fictitious saccades help to improve the… Elsevier BV	2015-06-01
Cytotoxicity of Au, ZnO and SiO₂ NPs using in vitro assays with mussel hemocytes and gill cells: Relevance of size, shape and additives. Authors: Alberto, Katsumiti,Inmaculada, Arostegui,Miriam, Oron,Douglas, Gilliland,Eugenia, Valsami-Jones,Miren P, Cajaraville Metal-bearing nanoparticles (NPs) possess unique physico-chemical characteristics that make them useful for an increasing number of industrial products and applications, but could also confer them a higher toxicity due to their higher reactivity compared to bulk forms of the same materials. There… Journal: Nanotoxicology	2015-05-13
Cytotoxicity of Au, ZnO and SiO₂NPs usingin vitroassays with mussel hemocytes and gill cells: Relevance of size, shape and additives Authors: Inmaculada Arostegui,Douglas Gilliland,Miriam Oron,Miren P. Cajaraville,Eugenia Valsami-Jones,Alberto Katsumiti AbstractMetal-bearing nanoparticles (NPs) possess unique physico-chemical characteristics that make them useful for an increasing number of industrial products and applications, but could also confer them a higher toxicity due to their higher reactivity compared to bulk forms of the same materials… Informa UK Limited	2015-05-12
Why are these similar? Investigating item similarity types in a large digital library Authors: German Rigau,Mark Stevenson,Aitor Gonzalez-Agirre,Eneko Agirre,Nikolaos Aletras We introduce a new problem, identifying the type of relation that holds between a pair of similar items in a digital library. Being able to provide a reason why items are similar has applications in recommendation, personalization, and search. We investigate the problem within the context of… Wiley	2015-05-05
Goal-oriented adaptivity using unconventional error representations for the 1D Helmholtz equation Authors: Darrigrand, Vincent,Pardo, David,Muga, Ignacio In this work, the error of a given output functional is represented using bilinear forms that are different from those given by the adjoint problem. These representations can be employed to design novel h, p, and hp energy-norm and goal-oriented adaptive algorithms. Numerical results in 1D show… Elsevier BV	2015-05-01
Mixtures of Generalized Mallows models for solving the quadratic assignment problem Authors: Josu Ceberio,Alexander Mendiburu,Roberto Santana,Jose A. Lozano Recently, distance-based exponential probability models have demonstrated their validity in the context of estimation of distribution algorithms when solving permutationbased combinatorial optimisation problems. However, despite their successful performance, some of these models are unimodal, and,… IEEE	2015-05-01
An Artificial Bioindicator System for Network Intrusion Detection Authors: Christian Blum,Pedro Pinacho Davidson,Jose A. Lozano An artificial bioindicator system is developed in order to solve a network intrusion detection problem. The system, inspired by an ecological approach to biological immune systems, evolves a population of agents that learn to survive in their environment. An adaptation process allows the… MIT Press - Journals	2015-05-01
Mathematical programming strategies for solving the minimum common string partition problem Authors: Christian Blum,Christian Blum,Pedro Pinacho Davidson,Pedro Pinacho Davidson,Jose A. Lozano The minimum common string partition problem is an NP-hard combinatorial optimization problem with applications in computational biology. In this work we propose the first integer linear programming model for solving this problem. Moreover, on the basis of the integer linear programming model we… Elsevier BV	2015-05-01
The Use of Pulse Oximetry to Determine Hypoxemia in Acute Exacerbations of COPD Authors: Susana, Garcia-Gutierrez,Anette, Unzurrunzaga,Inmaculada, Arostegui,Jose María, Quintana,Esther, Pulido,Maria Soledad, Gallardo,Cristóbal, Esteban,Jose M, Quintana There is little evidence that the guideline-recommended oxygen saturation of 92% is the best cut-off point for detecting hypoxemia in COPD exacerbations.To detect and validate pulse oximetry oxygen saturation cut-off values likely to detect hypoxemia in patients with aeCOPD, to explore the… Informa UK Limited	2015-03-16
A review of distances for the Mallows and Generalized Mallows estimation of distribution algorithms Authors: Josu Ceberio,Ekhine Irurozki,Alexander Mendiburu,Jose A. Lozano The Mallows (MM) and the Generalized Mallows (GMM) probability models have demonstrated their validity in the framework of Estimation of distribution algorithms (EDAs) for solving permutation-based combinatorial optimisation problems. Recent works, however, have suggested that the performance of… Springer Science and Business Media LLC	2015-03-06