Publications

Displaying 1101 - 1125 of 1351

Publication	Date
A pediatric shock advice algorithm based on the regularity of the detected beats Authors: Unai Irusta,Jesus Ruiz,S. Ruiz de Gauna,Elisabete Aramendi Automated external defibrillators (AED) detect fatal ventricular arrhythmias: ventricular fibrillation (VF) and ventricular tachycardia (VT). We have developed an algorithm based on the regularity of the detected beats to accurately discriminate VF from nonshockable rhythms in pediatric patients.… IEEE	2008-09-01
On the equipartition of energy for the critical NLW Authors: VEGA L,VISCIGLIA, NICOLA AbstractWe study some qualitative properties of global solutions to the following focusing and defocusing critical NLW:□u+λu\|u\|2∗−2=0,λ∈R,u(0)=f∈H˙1(Rn),∂tu(0)=g∈L2(Rn) on R×Rn for n⩾3, where 2∗≡2nn−2. We will consider the global solutions of the defocusing NLW whose existence and scattering… Elsevier BV	2008-08-01
Fourier series expansion in a non-orthogonal system of coordinates for the simulation of 3D alternating current borehole resistivity measurements Authors: Carlos Torres-Verdín,Victor M. Calo,Maciej Paszyński,Myung Jin Nam,David Pardo Abstract We describe a method to simulate 3D resistivity borehole measurements acquired with alternating current (AC) logging instruments. It combines the use of a Fourier series expansion in a non-orthogonal system of coordinates with an existing 2D goal-oriented higher-order self-adaptive hp-… Elsevier BV	2008-08-01
Scaling-sharp dispersive estimates for the Korteweg–de Vries group Authors: Côte, Raphaël,Vega, Luis We prove weighted estimates on the linear KdV group, which are scaling sharp. This kind of estimates are in the spirit of that used to prove small data scattering for the generalized KdV equations. Cellule MathDoc/Centre Mersenne	2008-08-01
Protein Folding in Simplified Models With Estimation of Distribution Algorithms Authors: Santana, Roberto,Larrañaga Múgica, Pedro María,Lozano, Jose Antonio Simplified lattice models have played an important role in protein structure prediction and protein folding problems. These models can be useful for an initial approximation of the protein structure, and for the investigation of the dynamics that govern the protein folding process. Estimation of… Institute of Electrical and Electronics Engineers (IEEE)	2008-08-01
On the Dirac delta as initial condition for nonlinear Schrödinger equations Authors: Banica, Valeria,Vega, Luis In this article we will study the initial value problem for some Schrödinger equations with Dirac-like initial data and therefore with infinite L^{2} mass, obtaining positive results for subcritical nonlinearities. In the critical… European Mathematical Society - EMS - Publishing House GmbH	2008-08-01
Prevalence of Knee and Hip Osteoarthritis and the Appropriateness of Joint Replacement in an Older Population Authors: J. Ignacio Goenaga,José M. Quintana,Iratxe Lafuente,Inmaculada Arostegui,Antonio Escobar,Jesús Azkarate Relatively little is known about the prevalence of knee and hip osteoarthritis in the general population.To estimate the prevalence of knee and hip osteoarthritis and the appropriateness of joint replacement in a general population of older individuals, the validated Knee and Hip OsteoArthritis… American Medical Association (AMA)	2008-07-28
Vertical structure of Jupiter's troposphere from nonlinear simulations of long-lived vortices Authors: Agustín Sánchez-Lavega,Jon Legarreta Abstract Numerical simulations of jovian vortices at tropical and temperate latitudes, under different atmospheric conditions, have been performed using the EPIC code [Dowling, T.E., Fisher, A.S., Gierasch, P.J., Harrington, J., LeBeau, R.P., Santori, C.M., 1998. Icarus 132, 221–238] to simulate… Elsevier BV	2008-07-01
A multi-objective approach to the Channel Assignment Problem Authors: Jayrani Cheeneebash,Jose A. Lozano,Harry Coomar Shumsher Rughooputh With the rapid growth of mobile communications, solving the channel assignment problem has now become a new challenge in research. In this paper, we present the channel assignment problem (CAP) from a multi-objective approach. From this new idea, the communication system can be easily managed in… IEEE	2008-06-01
Morphology and dynamics of Venus oxygen airglow from Venus Express/Visible and Infrared Thermal Imaging Spectrometer observations Authors: Hueso, R.,Sánchez-Lavega, Agustín,Piccioni, Giuseppe,Drossart, Pierre,Gérard, Jean-Claude,Khatuntsev, Igor V.,Zasova, Ludmilla,Migliorini, Alessandra Images obtained by the Visible and Infrared Thermal Imaging Spectrometer (VIRTIS)‐M channel instrument onboard Venus Express have been used to retrieve maps and apparent motions of the O2 (1Δ) infrared nightglow on Venus at 1.27 μm. The nightglow distribution is highly inhomogeneous with the… American Geophysical Union (AGU)	2008-05-01
GSHMC: An efficient method for molecular simulation Authors: Elena Akhmatskaya,Sebastian Reich The hybrid Monte Carlo (HMC) method is a popular and rigorous method for sampling from a canonical ensemble. The HMC method is based on classical molecular dynamics simulations combined with a Metropolis acceptance criterion and a momentum resampling step. While the HMC method completely resamples… Elsevier BV	2008-05-01
Characterization of mesoscale gravity waves in the upper and lower clouds of Venus from VEX‐VIRTIS images Authors: Peralta, Javier,Hueso, R.,Sánchez-Lavega, Agustín,Piccioni, Giuseppe,Lanciano, O.,Drossart, Pierre Images obtained from the Visible and InfraRed Thermal Imaging Spectrometer (VIRTIS)‐M instrument onboard Venus Express present visible trains of alternating bands of cloud brightness in two different layers: at the upper cloud tops (∼66 km altitude) observed in the dayside hemisphere using… American Geophysical Union (AGU)	2008-05-01
Improved Sampling for Simulations of Interfacial Membrane Proteins: Application of Generalized Shadow Hybrid Monte Carlo to a Peptide Toxin/Bilayer System Authors: Wee, C,Sansom, MS,Reich, S,Akhmatskaya, E The computational costs associated with performing molecular dynamics (MD) simulations are still somewhat prohibitive and therefore limit the time and length scales that can be currently achieved. One approach to overcoming the limited size and duration of a simulation is to reduce the amount of… American Chemical Society (ACS)	2008-04-16
The Effect of Surface Tension on the Moore Singularity of Vortex Sheet Dynamics Authors: F. de la Hoz,Marco A. Fontelos,Luis Vega We investigate the regularization of Moore’s singularities by surface tension in the evolution of vortex sheets and its dependence on the Weber number (which is inversely proportional to surface tension coefficient). The curvature of the vortex sheet, instead of blowing up at finite time t0, grows… Springer Science and Business Media LLC	2008-04-01
On linearization of Morison force given by high three-dimensional sea wave groups Authors: Arena F.,Nava V. Abstract In-line loading on slender marine structures may be computed by means of the Morison equation, which includes the inertia term (depending on wave acceleration) and the drag term (depending on square velocity). In the presence of random sea waves (either two- or three-dimensional waves),… Elsevier BV	2008-04-01
Fourier series expansion in a non-orthogonal system of coordinates for the simulation of 3D-DC borehole resistivity measurements Authors: Myung Jin Nam,Carlos Torres-Verdín,David Pardo,Victor M. Calo Abstract We describe a new method to simulate 3D borehole resistivity measurements at zero frequency (DC). The method combines the use of a Fourier series expansion in a non-orthogonal system of coordinates with an existing 2D goal-oriented higher-order self-adaptive hp -finite element algorithm… Elsevier BV	2008-04-01
Inference of Population Structure Using Genetic Markers and a Bayesian Model Averaging Approach for Clustering Authors: Santafé, Guzmán,Lozano, Jose Antonio,Larrañaga Múgica, Pedro María The analysis of the structure of populations on the basis of genetic data is essential in population genetics. It is used, for instance, to study the evolution of species or to correct for population stratification in association studies. These genetic data, normally based on DNA polymorphisms, may… Mary Ann Liebert Inc	2008-03-01
Jupiter's polar clouds and waves from Cassini and HST images: 1993–2006 Authors: Agustín Sánchez-Lavega,Ricardo Hueso,N. Barrado-Izagirre,Santiago Pérez-Hoyos Abstract For a variety of reasons, Jupiter's polar areas are probably the less observed regions of the planet. To study the dynamics and cloud vertical structure in the polar regions of the planet (latitudes 50° to 80° in both hemispheres) we have used images of Jupiter obtained from the… Elsevier BV	2008-03-01
Asymptotic Lower Bounds for a Class of Schrödinger Equations Authors: VEGA L,VISCIGLIA, NICOLA 24 pages. to appear on Comm. Math. Phys Springer Science and Business Media LLC	2008-02-22
A Preliminary Study on the Robustness and Generalization of Role Sets for Semantic Role Labeling Authors: Beñat Zapirain,Eneko Agirre,Lluís Màrquez Most Semantic Role Labeling (SRL) systems rely on available annotated corpora, being PropBank the most widely used corpus so far. Propbank role set is based on theory-neutral numbered arguments, which are linked to fine grained verb-dependant semantic roles through the verb framesets. Recently,… Springer Berlin Heidelberg	2008-02-09
A method to remove CPR artefacts from human ECG using only the recorded ECG Authors: Elisabete Aramendi,Sofía Ruiz de Gauna,Jo Kramer-Johansen,Trygve Eftestøl,Unai Irusta,Jesus Ruiz To show the possibility of using cardiopulmonary resuscitation (CPR) artefact suppression methods that do not need additional reference signals to model CPR artefacts.A CPR suppression method based on a Kalman filter was designed. The artefact was modelled using the fundamental frequency of the… Elsevier BV	2008-02-01
Improved dual frequency multiple access relay scheme for spatially correlated sources Authors: Pedro M. Crespo,Jose Angel Esteban,Javier Del Ser,Babak Hossein Khalaj We consider the non-cooperative multiple access relay channel, where N users transmit their information to a common receiver with the assistance of a shared relay. For N = 2 independent sources and dual-frequency operation (i.e. two separate frequency channels are available for transmission), it… IEEE	2008-02-01
Bounds for the maximal function associated to periodic solutions of one-dimensional dispersive equations Authors: Luis Vega,A. Moyua We give bounds on sup t \|u(x, t)\| for solutions u of dispersive equations on the one-dimensional torus. They are obtained from some improvements on bilinear types of estimate. Wiley	2008-02-01
Erratum: Depth of a strong jovian jet from a planetary-scale disturbance driven by storms Authors: G. S. Orton,Santiago Pérez-Hoyos,M. Valimberti,P. Yanamandra-Fisher,Ricardo Hueso,M. H. Wong,M. Salway,Noemi Pinilla-Alonso,Zac Pujic,Joseph L. Hora,F. Carvalho,J. Joels,Leigh Fletcher,A. Sánchez-Lavega,Enrique Garcia-Melendo,I. de Pater,J. Kemerer,D.… Springer Science and Business Media LLC	2008-02-01
Depth of a strong jovian jet from a planetary-scale disturbance driven by storms Authors: Sánchez-Lavega, A,Orton, G,Hueso, R,García-Melendo, E,Pérez-Hoyos, S,Simon-Miller, A,Rojas, J,Gómez, J,Yanamandra-Fisher, P,Fletcher, L,Joels, J,Kemerer, J,Hora, J,Karkoschka, E,de Pater, I,Wong, M,Marcus, P,Pinilla-Alonso, N,Carvalho, F,Go, C,Parker, D,… The atmospheres of the gas giant planets (Jupiter and Saturn) contain jets that dominate the circulation at visible levels. The power source for these jets (solar radiation, internal heat, or both) and their vertical structure below the upper cloud are major open questions in the atmospheric… Springer Science and Business Media LLC	2008-01-24