Enviaments recents

  • Unsupervised feature extraction of anterior chamber OCT images for ordering and classification 

    Amil Marletti, Pablo; González, Laura; Arrondo Murillo, Elena; Salinas Almela, Cecilia; Güell, José Luis; Masoller Alonso, Cristina; Parlitz, Ulrich (Nature, 2019-02-04)
    Article
    Accés obert
    We propose an image processing method for ordering anterior chamber optical coherence tomography (OCT) images in a fully unsupervised manner. The method consists of three steps: Firstly we preprocess the images (filtering ...
  • Laser Ultrasound Inspection Based on Wavelet Transform and Data Clustering for Defect Estimation in Metallic Samples 

    Mohamed Selim, Hossameldin; Delgado Prieto, Miquel; Trull Silvestre, José Francisco; Romeral Martínez, José Luis; Cojocaru, Crina (Multidisciplinary Digital Publishing Institute (MDPI), 2019-01-30)
    Article
    Accés obert
    Laser-generated ultrasound is a modern non-destructive testing technique. It has been investigated over recent years as an alternative to classical ultrasonic methods, mainly in industrial maintenance and quality control ...
  • Impact of lag information on network inference 

    Rubido, Nicolás; Masoller Alonso, Cristina (Springer, 2018-11-01)
    Article
    Accés restringit per política de l'editorial
    Extracting useful information from data is a fundamental challenge across disciplines as diverse as climate, neuroscience, genetics, and ecology. In the era of “big data,” data is ubiquitous, but appropriate methods are ...
  • Random delays and the synchronization of chaotic maps 

    Masoller Alonso, Cristina; Marti, Arturo C (American Institute of Physics (AIP), 2005-04)
    Article
    Accés restringit per política de l'editorial
    We investigate the dynamics of an array of chaotic logistic maps coupled with random delay times. We report that for adequate coupling strength the array is able to synchronize, in spite of the random delays. Specifically, ...
  • Directional invisibility by genetic optimization 

    Bor, Emre; Babayigit, Ceren; Kurt, H.; Staliunas, Kestutis; Turduev, M. (2018-11-26)
    Article
    Accés obert
    In this Letter, the design of a directional optical cloaking by a genetic algorithm is proposed and realized experimentally. A three-dimensional finite-difference time-domain method is combined with the genetic optimization ...
  • Asymmetric light transmission effect based on an evolutionary optimized semi-Dirac cone dispersion photonic structure 

    Bor, Emre; Turduev, Mirbek; Yasa, Utku Görkem; Kurt, Hamza; Staliunas, Kestutis (American Physical Society (APS), 2018-12-10)
    Article
    Accés obert
    In this paper, we present the numerical and experimental demonstration of asymmetric light transmission by a compact photonic crystal (PC) structure, which sustains semi-Dirac cone dispersion. The semi-Dirac point is ...
  • Estimation of the motion-induced horizontal-wind-speed standard deviation in an offshore doppler lidar 

    Gutiérrez Antuñano, Miguel Ángel; Tiana Alsina, Jordi; Salcedo, A.; Rocadenbosch Burillo, Francisco (Multidisciplinary Digital Publishing Institute (MDPI), 2018-12-14)
    Article
    Accés obert
    This work presents a new methodology to estimate the motion-induced standard deviation and related turbulence intensity on the retrieved horizontal wind speed by means of the velocity-azimuth-display algorithm applied to ...
  • Near surface geophysical analysis of the Navamuño depression (Sierra de Béjar, Iberian Central System): geometry, sedimentary infill and genetic implications of tectonic and glacial footprint 

    Carrasco González, Rosa M.; Turu Michels, Valentí; Pedraza Gilsanz, Javier de; Herrero Simon, Ramon (2018-08-15)
    Article
    Accés restringit per política de l'editorial
    The geometric and genetic characterization of the Navamuño depression peatland system (Iberian Central System) is presented here using results from a geophysical survey. This depression is a ~30¿ha pseudo-endorheic flat ...
  • Nonlinear oscillatory mixing in the generalized Landau scenario 

    Herrero Simon, Ramon; Farjas Silva, Jordi; Pi Vila, Francesc; Orriols Tubella, Gaspar (American Institute of Physics (AIP), 2018-05-31)
    Article
    Accés obert
    We present a set of phase-space portraits illustrating the extraordinary oscillatory possibilities of the dynamical systems through the so-called generalized Landau scenario. In its simplest form the scenario develops in ...
  • Harmonic generation from metal-oxide and metal-metal boundaries 

    Escalora, M.; Vincenti, M. A.; de Ceglia, Domenico; Akozbek, Neset; Bloemer, M. J.; De Angelis, C.; Haus, J.W.; Vilaseca Alavedra, Ramon; Trull Silvestre, José Francisco; Cojocaru, Crina (American Physical Society (APS), 2018-08-20)
    Article
    Accés obert
    We explore the outcomes of detailed microscopic models by calculating second- and third-harmonic generation from thin-film surfaces with discontinuous free-electron densities. These circumstances can occur in structures ...
  • Controllable coherent backscattering of light in disordered media filled with liquid crystal 

    Trull Silvestre, José Francisco; Cuevas, Marc; Salud Puig, Josep; Cojocaru, Crina; López Pérez, David Orencio (2018-05-09)
    Article
    Accés restringit per política de l'editorial
    We have investigated multiple scattering of light in a disordered system based on liquid crystals for a temperature-controllable random laser. Coherent backscattering measurements at several temperatures have been well ...
  • Gain through losses in nonlinear optics 

    Perego, A.M.; Turitsyn, S.K.; Staliunas, Kestutis (2018-08-01)
    Article
    Accés obert
    Instabilities of uniform states are ubiquitous processes occurring in a variety of spatially extended nonlinear systems. These instabilities are at the heart of symmetry breaking, condensate dynamics, self-organisation, ...

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