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    • openAccess   Multimodal Probabilistic Latent Semantic Analysis for Sentinel-1 and Sentinel-2 Image Fusion 

      Fernandez-Beltran, Ruben; Haut, Juan M.; Paoletti, Mercedes Eugenia; Plaza, Javier; Plaza, Antonio; Pla, Filiberto IEEE (2018-09)
      Probabilistic topic models have recently shown a great potential in the remote sensing image fusion field, which is particularly helpful in land-cover categorization tasks. This letter first studies the application of ...

    • openAccess   Multimodal Sensor Data Integration for Indoor Positioning in Ambient-Assisted Living Environments 

      Sansano-Sansano, Emilio; Belmonte-Fernández, Óscar; Montoliu Colás, Raul; Gascó Compte, Arturo; Caballer Miedes, Antonio Hindawi (2020)
      A reliable Indoor Positioning System (IPS) is a crucial part of the Ambient-Assisted Living (AAL) concept. The use of Wi-Fi fingerprinting techniques to determine the location of the user, based on the Received Signal ...

    • openAccess   Multiple scattering theory of non-Hermitian sonic second-order topological insulators 

      Rosendo López, María; Zhang, Zhiwang; Torrent, Daniel; Christensen, Johan (2019-10-25)
      Topological phases of sound enable unconventional confinement of acoustic energy at the corners in higher-order topological insulators. These unique states which go beyond the conventional bulk-boundary correspondence have ...

    • openAccess   Multispectral integral imaging acquisition and processing using a monochrome camera and a liquid crystal tunable filter 

      Latorre Carmona, Pedro; Sánchez Ortiga, Emilio; Xiao, Xiao; Pla, Filiberto; Martínez Corral, Manuel; Navarro, Héctor; Saavedra, Genaro; Javidi, Bahram Optical Society of America (2012)
      This paper presents an acquisition system and a procedure to capture 3D scenes in different spectral bands. The acquisition system is formed by a monochrome camera, and a Liquid Crystal Tunable Filter (LCTF) that allows ...

    • openAccess   Multitemporal Mosaicing for Sentinel-3/FLEX Derived Level-2 Product Composites 

      Ibáñez Fernández, Damián; Fernandez-Beltran, Ruben; Martínez Sotoca, José; Mollineda, Ramón A.; Moreno, Jose; Pla, Filiberto Institute of Electrical and Electronics Engineers (2020-09-24)
      The increasing availability of remote sensing data raises important challenges in terms of operational data provision and spatial coverage for conducting global studies and analyses. In this regard, existing multitemporal ...

    • closedAccess   Multivariate functional random fields: prediction and optimal sampling 

      Bohorquez Castañeda, Martha Patricia; Giraldo, Ramón; Mateu, Jorge Springer Verlag (2017)
      This paper develops spatial prediction of a functional variable at unsampled sites, using functional covariates, that is, we present a functional cokriging method. We show that through the representation of each function ...

    • closedAccess   Multivariate Kalman filtering for spatio-temporal processes 

      Ferreira, Guillermo; Mateu, Jorge; Porcu, Emilio Springer (2022)
      An increasing interest in models for multivariate spatio-temporal processes has been noted in the last years. Some of these models are very flexible and can capture both marginal and cross spatial associations amongst the ...

    • closedAccess   Multivariate product-shot-noise Cox point process models 

      Jalilian, Abdollah; Guan, Yongtao; Mateu, Jorge; Waagepetersen, Rasmus Wiley (2015)
      We introduce a new multivariate product-shot-noise Cox process which is useful for modeling multi-species spatial point patterns with clustering intra-specific interactions and neutral, negative, or positive inter-specific ...

    • openAccess   Nearest neighbour distance matching Leave-One-Out Cross-Validation for map validation 

      Milà, Carles; Mateu, Jorge; Pebesma, Edzer; Meyer, Hanna John Wiley & Sons Ltd on behalf of British Ecological Society (2022-03-28)
      1. Several spatial and non-spatial Cross-Validation (CV) methods have been used to perform map validation when additional sampling for validation purposes is not possible, yet it is unclear in which situations one CV ...

    • openAccess   New classes of spectral densities for lattice processes and random fields built from simple univariate margins 

      Porcu, Emilio; Mateu, Jorge; Gregori, Pablo; Ostoja-Starzewski, Martin Springer-Verlag (2012-05)
      Quasi arithmetic and Archimedean functionals are used to build new classes of spectral densities for processes defined on any d-dimensional lattice Zd and random fields defined on the d-dimensional Euclidean space Rd , ...

    • openAccess   New Trends in Using Augmented Reality Apps for Smart City Contexts 

      Ramos, Jose Francisco; Trilles, Sergio; Torres-Sospedra, Joaquín; Perales, Francisco J. MDPI (2018-12)
      The idea of virtuality is not new, as research on visualization and simulation dates back to the early use of ink and paper sketches for alternative design comparisons. As technology has advanced so the way of visualizing ...

    • openAccess   Noise-Tolerant Deep Neighborhood Embedding for Remotely Sensed Images With Label Noise 

      kang, jian; Fernandez-Beltran, Ruben; Kang, Xudong; Ni, Jingen; Plaza, Antonio IEEE (2021-02-02)
      Recently, many deep learning-based methods have been developed for solving remote sensing (RS) scene classification or retrieval tasks. Most of the adopted loss functions for training these models require accurate annotations. ...

    • openAccess   Non-linear spatial modeling of rat sightings in relation to urban multi-source foci 

      Ayyad, Carlos; Mateu, Jorge; Tamayo Uria, Ibon Elsevier (2018-06)
      The brown rat has been living with humans in a wide variety of environmental contexts; it adversely affects public health by transmission of pathogens that can cause human diseases and allergies. Understanding behavioral ...

    • closedAccess   Non-locality of the Willis coupling in fluid laminates 

      Malléjac, Matthieu; Cavalieri, Théo; Romero-García, Vicent; Merkel, Aurélien; Torrent, Daniel; Christensen, Johan; Li, Jensen; Groby, Jean-Philippe Elsevier B.V. (2022-02-04)
      The closed form expressions of the effective properties in periodic fluid laminates are derived thanks to the Padé approximation of the transfer matrix. A second-order Taylor expansion of the transfer matrix elements ...

    • openAccess   Nonlinear Optics to Glucose Sensing: Multifunctional Nitrogen and Boron Doped Carbon Dots with Solid-State Fluorescence in Nanoporous Silica Films 

      Kiprop Kipnusu, Wycliffe; Doñate-Buendía, Carlos; Fernández-Alonso, Mercedes; Lancis, Jesús; Mínguez-Vega, Gladys Wiley (2020)
      Multifunctional triple color photoluminescent (PL) nitrogen–boron doped carbon quantum dots (CQDs) with high quantum yield (QY) of 58% are fabricated by one step femtosecond pulsed laser irradiation of a single precursor ...

    • openAccess   Nonparametric testing of the dependence structure among points-marks-covariates in spatial point patterns 

      Mateu, Jorge; Mrkvicka, Tomas; Dvořák, Jiří; González, Jonatan A. John Wiley & Sons (2022-05-16)
      We investigate testing of the hypothesis of independence between a covariate and the marks in amarked point process. It would be rather straightforward if the (unmarked) point process wereindependent of the covariate and ...

    • closedAccess   Nonparametric tilted density function estimation: A cross-validation criterion 

      Doosti, Hassan; Hall, Peter; Mateu, Jorge Elsevier (2018-12)
      In this paper, we propose a tilted estimator for nonparametric estimation of a density function. We use a cross-validation criterion to choose both the bandwidth and the tilted estimator parameters. We demonstrate theoretically ...

    • openAccess   Nonreciprocal and even Willis couplings in periodic thermoacoustic amplifiers 

      Olivier, Côme; Poignand, Gaëlle; Malléjac, Matthieu; Romero-García, Vicent; PENELET, guillaume; Merkel, Aurélien; Torrent, Daniel; Li, Jensen; Christensen, Johan; Groby, Jean-Philippe American Physical Society (2021-11-10)
      hermoacoustic amplifiers are analyzed in the framework of nonreciprocal Willis coupling. The closed form expressions of the effective properties are derived, showing that an applied temperature gradient causes the appearance ...

    • openAccess   Nonreciprocal Thermal Material by Spatiotemporal Modulation 

      Torrent, Daniel; Poncelet, Olivier; Batsale, Jean-Chirstophe American Physical Society (2018)
      The thermal properties of a material with a spatiotemporal modulation, in the form of a traveling wave, in both the thermal conductivity and the specific heat capacity are studied. It is found that these materials behave ...

    • closedAccess   Normalized global alignment for protein sequences 

      Peris Ripollés, Guillermo; Marzal Varó, Andrés Elsevier (2011)
      Global alignment is used to compare proteins in different fields, for example in phylogenetic research. In order to reduce the length and composition dependence of global alignment scores, Z-score is computed with a ...