Scientific rationale for Saturn׳s in situ exploration
Authors: Ravit Helled,Ricardo Hueso,Alexis Bouquet,Aymeric Spiga,Kathrin Altwegg,Philippe Rousselot,Mohamad Ali-Dib,Thierry Fouchet,David H. Atkinson,David H. Atkinson,Pgj Irwin,D Lebleu,Matthew M. Hedman,K. Reh,Amy Simon,Sushil K. Atreya,Tristan Guillot,S.…
Remote sensing observations meet some limitations when used to study the bulk atmospheric composition of the giant planets of our solar system. A remarkable example of the superiority of in situ probe measurements is illustrated by the exploration of Jupiter, where key measurements such as the…
Elsevier BV
The science case for an orbital mission to Uranus: Exploring the origins and evolution of ice giant planets
Authors: Eberhard Grün,Eberhard Grün,Renaud Sallantin,Glyn Collinson,Kevin H. Baines,Kevin H. Baines,Don Banfield,J. L. MacArthur,George Hospodarsky,Jonathan J. Fortney,John F. Cooper,O. Karatekin,Roberto Peron,Gabriel Tobie,Julie Castillo-Rogez,Andrew Smith,…
Giant planets helped to shape the conditions we see in the Solar System today and they account for more than 99% of the mass of the Sun's planetary system. They can be subdivided into the Ice Giants (Uranus and Neptune) and the Gas Giants (Jupiter and Saturn), which differ from each other in a…
Elsevier BV
Locality-aware policies to improve job scheduling on 3D tori
Authors: Jose Miguel-Alonso,Jose A. Lozano,Jose Antonio Pascual
This paper studies the influence that contiguous job placement has on the performance of schedulers for large-scale computing systems. In contrast with non-contiguous strategies, contiguous partitioning enables the exploitation of communication locality in applications, and also reduces inter-…
Springer Science and Business Media LLC
Constant pressure hybrid Monte Carlo simulations in GROMACS
Authors: Elena Akhmatskaya,Elena Akhmatskaya,Bruno Escribano,Mario Fernández-Pendás,Tijana Radivojevic
Adaptation and implementation of the Generalized Shadow Hybrid Monte Carlo (GSHMC) method for molecular simulation at constant pressure in the NPT ensemble are discussed. The resulting method, termed NPT-GSHMC, combines Andersen barostat with GSHMC to enable molecular simulations in the environment…
Springer Science and Business Media LLC
Vortex filament equation for a regular polygon
Authors: Luis Vega,Luis Vega,Francisco de la Hoz
In this paper, we study the evolution of the vortex filament equation (VFE), $$\mathbf X_t = \mathbf X_s \wedge \mathbf X_{ss},$$ with $\mathbf X(s, 0)$ being a regular planar polygon. Using algebraic techniques, supported by full numerical simulations, we give strong evidence that $\mathbf X(s, t…
IOP Publishing
A Coral Reefs Optimization algorithm for optimal mobile network deployment with electromagnetic pollution control criterion
Authors: Jose A. Portilla-Figueras,Sancho Salcedo-Sanz,J. Del Ser,P. Garcia-Diaz,Sergio Gil-Lopez
Graphical abstractDisplay Omitted HighlightsA Mobile Network Deployment Problem is tackled using the CRO.The Coral Reefs Optimization is based on corals and corals reefs biology.A full description of the new algorithm is carried out.Experimental comparison with alternative soft-computing algorithms…
Elsevier BV
Beyond ventricular fibrillation analysis: Comprehensive waveform analysis for all cardiac rhythms occurring during resuscitation
Authors: Trygve Eftestøl,Jo Kramer-Johansen,Eirik Skogvoll,Elisabete Aramendi,Trond Nordseth,Erik Alonso,Erik Alonso
To propose a method which analyses the electrocardiogram (ECG) waveform of any cardiac rhythm occurring during resuscitation and computes the probability of that rhythm converting into another with better prognosis (Pdes).Rhythm transitions occurring spontaneously or due to defibrillation were…
Elsevier BV
A random-key encoded harmony search approach for energy-efficient production scheduling with shared resources
Authors: Garcia-Santiago, C.A.,Del Ser, Javier,Upton, C.,Quilligan, F.,Gil-Lopez, S.,Salcedo-Sanz, Sancho
When seeking near-optimal solutions for complex scheduling problems, meta-heuristics demonstrate good performance with affordable computational effort. This has resulted in a gravitation towards these approaches when researching industrial use-cases such as energy-efficient production planning.…
Informa UK Limited
Shell interactions for Dirac operators
Authors: Albert Mas,Naiara Arrizabalaga,Luis Vega
The self-adjointness of $H+V$ is studied, where $H=-i��\cdot\nabla +m��$ is the free Dirac operator in $\R^3$ and $V$ is a measure-valued potential. The potentials $V$ under consideration are given by singular measures with respect to the Lebesgue measure, with special attention to surface measures…
Elsevier BV
Improving search over Electronic Health Records using UMLS-based query expansion through random walks
Authors: Aitor Soroa,Arantxa Otegi,Eneko Agirre,David Martinez
Most of the information in Electronic Health Records (EHRs) is represented in free textual form. Practitioners searching EHRs need to phrase their queries carefully, as the record might use synonyms or other related words. In this paper we show that an automatic query expansion method based on the…
Elsevier BV
Towards a Greener Cloud Infrastructure Management using Optimized Placement Policies
Authors: Jose A. Lozano,Jose Miguel-Alonso,Tania Lorido-Botran,Jose Antonio Pascual
Cloud infrastructures are designed to simultaneously service many, diverse applications that consist of collections of Virtual Machines (VMs). The placement policy used to map applications onto physical servers has important effects in terms of application performance and resource efficiency. We…
Springer Science and Business Media LLC
Using knowledge-based relatedness for information retrieval
Authors: Arantxa Otegi,Olatz Ansa,Xabier Arregi,Eneko Agirre
Traditional information retrieval (IR) systems use keywords to index and retrieve documents. The limitations of keywords were recognized since the early days, specially when different but closely related words are used in the query and the relevant document. Query expansion techniques like pseudo-…
Springer Science and Business Media LLC
Impact of Competitive Processes on Controlled Radical Polymerization
Authors: Simone Rusconi,Dmitri Sokolovski,Dmitri Sokolovski,Elena Akhmatskaya,José M. Asua,Nicholas Ballard,José C. de la Cal
The kinetics of radical polymerization have been systematically studied for nearly a century and in general are well understood. However, in light of recent developments in controlled radical polymerization many kinetic anomalies have arisen. These unexpected results have been largely considered…
American Chemical Society (ACS)
Fast Simulation of Through-casing Resistivity Measurements Using Semi-analytical Asymptotic Models. Part 1: Accuracy Study
Authors: Aralar Erdozain,Aralar Erdozain,V. Péron,David Pardo,David Pardo
When trying to obtain a better characterization of the Earth's subsurface, it is common to use borehole through-casing resistivity measurements. It is also common for the wells to be surrounded by a metal casing to protect the well and avoid possible collapses. The presence of this metal case…
EAGE Publications BV
Cytotoxicity of TiO2nanoparticles to mussel hemocytes and gill cellsin vitro: Influence of synthesis method, crystalline structure, size and additive
Authors: Miren P. Cajaraville,Miriam Oron,Paul Reip,Deborah Berhanu,Kieren T. Howard,Inmaculada Arostegui,Eugenia Valsami-Jones,Alberto Katsumiti
Increasing the production and applications of TiO2 nanoparticles (NPs) has led to grow concerns about the consequences for the environment. In this study, we investigated the effects of a set of TiO2 NPs on the viability of mussel hemocytes and gill cells using neutral red and thiazolyl tetrazolium…
Informa UK Limited
A novel range-free localization algorithm to turn connectivity traces and motion data into localization information
Authors: José Luis Ortega Martín,Sergio Gil-Lopez,Ignacio Olabarrieta,Javier Del Ser,José María Cabero
Abstract This paper presents a novel range-free localization algorithm that has been originally designed to help in the characterization of human behavior by turning connectivity traces of mobile nodes into localization information. It is based on an error function that uses connectivity between…
Elsevier BV
Personalised PageRank for making recommendations in digital cultural heritage collections
Authors: Paul Clough,Eneko Agirre,Arantxa Otegi
In this paper we describe the use of Personalised PageRank (PPR) to generate recommendations from a large collection of cultural heritage items. Various methods for computing item-to-item similarities are investigated, together with representing the collection as a network over which random walks…
IEEE
A secondary field based Fourier finite element method for the simulation of 3D marine CSEM measurements
Authors: David Pardo,Shaaban A. Bakr
This work describes an extension of a Fourier finite element method used for the simulation of three-dimensional (3D) marine controlled source electromagnetic (CSEM) measurements using a secondary field based formulation. The key point here is that the primary field employs a semi-analytical…
Society of Exploration Geophysicists
Instrumental methods for professional and amateur collaborations in planetary astronomy
Authors: A. Wesley,Fanny Meyer,T. Böhm,Santiago Pérez-Hoyos,Alain Klotz,L. Buzzi,S. Foglia,David Baratoux,M. Delcroix,Alice Decock,C. Rinner,W. Beisker,Georg Fischer,N. Esseiva,D. Herald,Thomas Widemann,A. Delsanti,H. B. Hammel,Brigitte Zanda,Vincent Boudon,M.…
Amateur contributions to professional publications have increased exponentially over the last decades in the field of Planetary Astronomy. Here we review the different domains of the field in which collaborations between professional and amateur astronomers are effective and regularly lead to…
Springer Science and Business Media LLC
A hybrid method for inversion of 3D DC resistivity logging measurements
Authors: Smołka, Maciej,Gajda-Zagórska, Ewa,Schaefer, Robert,Paszyński, Maciej,Pardo, David
This paper focuses on the application of hp hierarchic genetic strategy (hp-HGS) for solution of a challenging problem, the inversion of 3D direct current (DC) resistivity logging measurements. The problem under consideration has been formulated as the global optimization one, for which the…
Springer Science and Business Media LLC
A review of travel time estimation and forecasting for Advanced Traveller Information Systems
Authors: Mori, U.,Mendiburu, A.,Alvarez, Maite,Lozano, J.A.
Due to the increase in vehicle transit and congestion in road networks, providing information about the state of the traffic to commuters has become a critical issue for Advanced Traveller Information Systems. These systems should assist users in making pre-trip and en-route decisions and, for this…
Informa UK Limited
Evaluating hierarchical organisation structures for exploring digital libraries
Authors: Hall, Mark M.,Fernando, Samuel,Clough, Paul D.,Soroa, Aitor,Agirre, Eneko,Stevenson, Mark
Search boxes providing simple keyword-based search are insufficient when users have complex information needs or are unfamiliar with a collection, for example in large digital libraries. Browsing hierarchies can support these richer interactions, but many collections do not have a suitable…
Springer Science and Business Media LLC