• closedAccess   Kriging with external drift for functional data for air quality monitoring 

      Ignaccolo, Rosaria; Mateu, Jorge; Giraldo, Ramón Springer Verlag (2014-07)
      Functional data featured by a spatial dependence structure occur in many environmental sciences when curves are observed, for example, along time or along depth. Recently, some methods allowing for the prediction of a curve ...
    • openAccess   Laser and electron beam-induced formation of Ag/Cr structures on Ag2CrO4 

      Lemos, Pablo; Silva, G. S.; Roca, R. A.; Assis, Marcelo de; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Cordoncillo, Eloisa; Andres, Juan; Longo, Elson Royal Society of Chemistry (2019)
      The interactions of silver chromate (Ag2CrO4) with a femtosecond (fs) laser and electron beam irradiations were investigated. For the first time, the growth and coalescence of metallic Ag nanoparticles (NPs) on an Ag2CrO4 ...
    • closedAccess   Laser-induced formation of bismuth nanoparticles 

      Assis, Marcelo de; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Gouveia, Amanda; Leite, Edson; Andres, Juan; Longo, Elson Royal Society of Chemistry (2018)
      In the current communication, the synthesis of metallic Bi nanoparticles with coexisting crystallographic structures (rhombohedral, monoclinic, and cubic) obtained via direct femtosecond laser irradiation of NaBiO3 is ...
    • openAccess   Laser/Electron Irradiation on Indium Phosphide (InP) Semiconductor: Promising Pathways to In Situ Formation of Indium Nanoparticles 

      Assis, Marcelo de; Guerra Macedo, Nadia; Machado, Thales Rafael; Ferrer, Mateus M.; Gouveia, Amanda; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Leite, Edson R.; Sambrano, Julio; Andres, Juan; Longo, Elson Wiley (2018)
      In the current study, whether femtosecond laser and electron beam irradiation of indium phosphide (InP) are “green,” fast, and effective methods to produce metallic In nanoparticles is probed. High-resolution transmission ...
    • openAccess   Latent topic-based super-resolution for remote sensing 

      Fernandez-Beltran, Ruben; Latorre Carmona, Pedro; Pla, Filiberto Taylor & Francis (2017)
      This letter presents a novel single-image Super-Resolution (SR) approach based on latent topics specially designed to remote sensing imagery. The proposed approach pursues to super-resolve topics uncovered from ...
    • openAccess   Latent Topics-based Relevance Feedback for Video Retrieval 

      Fernandez-Beltran, Ruben; Pla, Filiberto Elsevier (2015)
      This paper presents a novel Content-Based Video Retrieval approach in order to cope with the semantic gap challenge by means of latent topics. Firstly, a supervised topic model is proposed to transform the classical retrieval ...
    • openAccess   Learning First Aid with a Video Game 

      Rebollo Santamaría, Cristina; Gasch, Cristina; Remolar, Inmaculada; Delgado Gomis, Daniel MDPI (2021-12-02)
      Any citizen can be involved in a situation that requires basic first aid knowledge. For this reason, it is important to be trained in this kind of activity. Serious games have been presented as a good option to integrate ...
    • openAccess   Learning History Using Virtual and Augmented Reality 

      Remolar, Inmaculada; Rebollo Santamaría, Cristina; Fernández Moyano, Jon Andoni MDPI (2021-11-08)
      Master lectures of history are usually quite boring for the students, and to keep their attention requires a great effort from teachers. Virtual and Augmented Reality have a clear potential in education and can solve this ...
    • openAccess   Un lenguaje para la especificación de la lógica de juegos 

      Marin-Lora, Carlos; Chover, Miguel; Martínez Sotoca, José CEUR Workshop Proceedings (CEUR-WS.org) (2020)
      The development of video games is a complex task due to the large amount of knowledge it requires in terms of design and programming. In particular, the specification of the behavior of the elements of a game is one ...
    • openAccess   Leveraging Container Technologies in a GIScience Project: A Perspective from Open Reproducible Research 

      Benito, Pedro J; Trilles, Sergio; Navarro-Carrión, José T. MDPI (2020-02-20)
      Scientific reproducibility is essential for the advancement of science. It allows the results of previous studies to be reproduced, validates their conclusions and develops new contributions based on previous research. ...
    • openAccess   Leveraging electronic healthcare record standards and semantic web technologies for the identification of patient cohorts 

      Fernández-Breis, Jesualdo Tomás; Maldonado, Jose Alberto; Marcos, Mar; Legaz-García, María del Carmen; Moner, David; Torres-Sospedra, Joaquín; Esteban-Gil, Ángel; Martínez-Salvador, Begoña; Robles, Montserrat American Medical Informatics Association (2013)
      Background The secondary use of electronic healthcare records (EHRs) often requires the identification of patient cohorts. In this context, an important problem is the heterogeneity of clinical data sources, which can be ...
    • closedAccess   Lightweight Hybrid CNN-ELM Model for Multi-building and Multi-floor Classification 

      Quezada Gaibor, Darwin; Torres-Sospedra, Joaquín; Nurmi, Jari; Koucheryavy, Yevgeni; Huerta, Joaquin IEEE (2022)
      Machine learning models have become an essential tool in current indoor positioning solutions, given their high capabilities to extract meaningful information from the environment. Convolutional neural networks (CNNs) ...
    • openAccess   Lightweight Wi-Fi Fingerprinting with a Novel RSS Clustering Algorithm 

      Quezada Gaibor, Darwin; Torres-Sospedra, Joaquín; Nurmi, Jari; Koucheryavy, Yevgeni; Huerta, Joaquin IEEE (2021-11-29)
      Nowadays, several indoor positioning solutions sup-port Wi-Fi and use this technology to estimate the user position. It is characterized by its low cost, availability in indoor and outdoor environments, and a wide variety ...
    • openAccess   Local inhomogeneous second-order characteristics for spatio-temporal point processes occurring on linear networks 

      D'ANGELO, Nicoletta; adelfio, giada; Mateu, Jorge Springer (2022)
      Point processes on linear networks are increasingly being considered to analyse events occurring on particular network-based structures. In this paper, we extend Local Indicators of Spatio-Temporal Association (LISTA) ...
    • openAccess   Local-level Analysis of Positioning Errors in Wi-Fi Fingerprinting 

      Mendoza-Silva, Germán Martín; Torres-Sospedra, Joaquín; Huerta, Joaquin IEEE (2021-04-25)
      Nowadays, Location Based Services run over a net of heterogeneous devices (mainly smartphones) with different location capabilities thanks to, for instance, signals of opportunity as Wi-Fi. In contrast to professional ...
    • closedAccess   Locations Selection for Periodic Radio Map Update in WiFi Fingerprinting 

      Mendoza-Silva, Germán Martín; Torres-Sospedra, Joaquín; Huerta, Joaquin Springer (2018)
      The construction and update of a radio map are usually referred as the main drawbacks of WiFi fingerprinting, a very popular method in indoor localization research. For radio map update, some studies suggest taking new ...
    • openAccess   Long-Term Analyses of the Rate of Perceived Exertion as an Indicator of Intensity in Women’s Basketball during a Relegation Play-off 

      Batalla Gavaldà, Abraham; Beltran-Garrido, Jose Vicente; Garrosa Martín, Gerson; Cecília-Gallego, Pau; Montoliu Colás, Raul; Corbi, Francisco MDPI (2022-11)
      Knowledge of internal load is essential to understand the effect of training and competition on athletes. The aim of this study was to analyse the validity of the rate of perceived exertion (RPE) scale as an indicator of ...
    • openAccess   Long-Term WiFi Fingerprinting Dataset for Research on Robust Indoor Positioning 

      Mendoza-Silva, Germán Martín; Richter, Philipp; Torres-Sospedra, Joaquín; Lohan, Elena Simona; Huerta, Joaquin MDPI (2018-01-16)
      WiFi fingerprinting, one of the most popular methods employed in indoor positioning, currently faces two major problems: lack of robustness to short and long time signal changes and difficult reproducibility of new methods ...
    • openAccess   Looking for “in-between” Places 

      Portela, Manuel; Acedo Sánchez, Albert; Granell, Carlos Media Theory (2018)
      This article develops the concept of “in-between” places in relation to the study of language, perceptions and memorieswithin the broader mediation of cartography. We held an empirical qualitative studyin the city of ...
    • closedAccess   Loss compensation in time-dependent elastic metamaterials 

      Torrent, Daniel; Parnell, William J.; Norris, Andrew N. American Physical Society (2018)
      Materials with properties that are modulated in time are known to display wave phenomena showing energy increasing with time, with the rate mediated by the modulation. Until now there has been no accounting for ...