Visualitzant Institute of New Imaging Technologies (INIT) per títol

Ara mostrant els elements 797-816 d 862

    • openAccess   Time Expansion in Distributed Optical Fiber Sensing 

      Fernández Ruiz, María del Rosario; Soriano-Amat, Miguel; Durán, Vicente; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel Institute of Electrical and Electronics Engineers (2023-05-01)
      Distributed optical fiber sensing (DOFS) technology has recently experienced an impressive growth in various fields including security, structural monitoring and seismology, among others. This expansion has been accompanied ...

    • openAccess   Time-expanded phase-sensitive optical time-domain reflectometry 

      Soriano-Amat, Miguel; Martins, Hugo; Durán, Vicente; Costa, Luís; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario Light: Science & Applications (2021-03-09)
      Phase-sensitive optical time-domain reflectometry (ΦOTDR) is a well-established technique that provides spatio-temporal measurements of an environmental variable in real time. This unique capability is being leveraged in ...

    • openAccess   Time-expanded φOTDR using low-frequency electronics 

      Soriano-Amat, Miguel; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario; Durán, Vicente Optica Publishing Group (2023-01)
      Time expanded phase-sensitive optical time-domain reflectometry (TE-φOTDR) is a recently reported technique for distributed optical fiber sensing based on the interference of two mutually coherent optical frequency combs. ...

    • openAccess   Time-Resolved Sentinel-3 Vegetation Indices Via Inter-Sensor 3-D Convolutional Regression Networks 

      Fernandez-Beltran, Ruben; Ibáñez Fernández, Damián; kang, jian; Pla, Filiberto Institute of Electrical and Electronics Engineers (2021-09-03)
      Sentinel missions provide widespread opportunities of exploiting inter-sensor synergies to improve the operational monitoring of terrestrial photosynthetic activity and canopy structural variations using vegetation indices ...

    • openAccess   Topological States in Twisted Pillared Phononic Plates 

      Jin, Yabin; Wang, Wan; Wen, Zhihui; Torrent, Daniel; Djafari Rouhani, Bahram Elsevier (2020-09-20)
      In recent years, the advances in topological insulator in the fields of condensed matter have been extended to classical wave systems such as acoustic and elastic waves. However, the quantitative robustness study of ...

    • openAccess   Topological vortex mode for flexural waves in pillared plates 

      Wen, Zhihui; Iglesias Martínez, Julio Andrés; Jin, Yabin; Li, Yan; Djafari Rouhani, Bahram; Torrent, Daniel; Raynaud, Jean-louis; Khelif, Abdelkrim Elsevier (2023)
      Localized topological modes with high robustness to various perturbations are receiving increasing attention. Recently, zero-order topological vortex modes have been designed in phononic structures, in analogy with ...

    • openAccess   Toward Expanding the Optical Response of Ag2CrO4 and Bi2O3 by Their Laser-Mediated Heterojunction 

      Torres-Mendieta, Rafael; Teixeira, Mayara Mondego; Mínguez-Vega, Gladys; de Souza, Daniele; Galvão Gobato, Yara; Assis, Marcelo de; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Andres, Juan; Cernik, Miroslav; Longo, Elson American Chemical Society (2020-11-18)
      The formation of heterojunctions between semiconductors with distinct properties usually expands their capabilities. In this context, many methodologies have been employed in pursuing efficient and fruitful heterojunctions. ...

    • closedAccess   Towards Accelerated Localization Performance Across Indoor Positioning Datasets 

      Klus, Lucie; Quezada Gaibor, Darwin; Torres-Sospedra, Joaquín; Lohan, Elena Simona; Granell, Carlos; Nurmi, Jari IEEE (2022)
      The localization speed and accuracy in the indoor scenario can greatly impact the Quality of Experience of the user. While many individual machine learning models can achieve comparable positioning performance, their ...

    • openAccess   Towards Gender Equality in Education and Career in the Earth Observation and GI Sector 

      Riedler, Barbara; Stephenne, Nathalie; Aguilar Moreno, Estefanía; Jagaille, Marie; Monfort Muriach, Aida; Fiore, Grazia; Antoniou, Natassa Copernicus GmbH (2021)
      Gender inequality is omnipresent in our society and in the field of education and training, the gender gap is especially evident in STEM (Science, Technology, Engineering and Mathematics) disciplines. While different studies ...

    • openAccess   Towards social paradigms for mobile context-aware computing in smart cities 

      Kamberov, Rustam; Santos, Vitor; Granell, Carlos AISTI (Associaçao Ibérica de Sistemas e Tecnologias de Informaçao) (2016)
      Mobile context-aware computing is an essential component of the smart cities infrastructure. Attempts were made to develop a model that can effectively represent a system in device to support context-aware behavior. ...

    • openAccess   Towards the scale-up of the formation of nanoparticles on α -Ag 2 WO 4 with bactericidal properties by femtosecond laser irradiation 

      Assis, Marcelo de; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Oliveira, Regiane; Leite, Edson R.; Foggi, Camila Cristina; Vergani, Carlos; Longo, Elson; Andres, Juan Nature Publishing Group (2018)
      In recent years, complex nanocomposites formed by Ag nanoparticles coupled to an α-Ag2WO4 semiconductor network have emerged as promising bactericides, where the semiconductor attracts bacterial agents and Ag nanoparticles ...

    • openAccess   Towards Ubiquitous Indoor Positioning: Comparing Systems across Heterogeneous Datasets 

      Torres-Sospedra, Joaquín; Silva, Ivo; Klus, Lucie; Quezada Gaibor, Darwin; Crivello, Antonino; Barsocchi, Paolo; Pendão, Cristiano; Lohan, Elena Simona; Nurmi, Jari; Moreira, Adriano IEEE (2021-11-29)
      The evaluation of Indoor Positioning Systems (IPSs) mostly relies on local deployments in the researchers’ or partners’ facilities. The complexity of preparing comprehensive experiments, collecting data, and considering ...

    • openAccess   Towns Conquer : A Gamified application to collect geographical names (vernacular names/toponyms) 

      Castellote, Jesús; Huerta, Joaquin; Pescador, Javier; Brown, Michael AGILE (2013)
      The traditional model for geospatial crowd sourcing asks the public to use their free time collecting geospatial data for no obvious reward. This model has shown to work very well on projects such as Open ...

    • openAccess   TrackInFactory: A Tight Coupling Particle Filter for Industrial Vehicle Tracking in Indoor Environments 

      Silva, Ivo; Pendão, Cristiano; Torres-Sospedra, Joaquín; Moreira, A Institute of Electrical and Electronics Engineers (2021-07-06)
      Localization and tracking of industrial vehicles have a key role in increasing productivity and improving the logistics processes of factories. Due to the demanding requirements of industrial vehicle tracking and navigation, ...

    • openAccess   Training Engineers in the Use of Constraints to Create Quality 2D Pro les for 3D Models 

      Plumed, Raquel; González-Lluch, Carmen; Otey, Jeffrey; Pérez-Belis, Victoria CAD Solutions (2021)
      Historically, different strategies utilized in engineering and technical graphics reflect growing concern about improvement in CAD instruction and the introduction of product quality data in curricular activities. Our ...

    • openAccess   Transfer Deep Learning for Remote Sensing Datasets: A Comparison Study 

      Hernandez-Sequeira, Itza; Fernandez-Beltran, Ruben; Pla, Filiberto IEEE (2022-07-17)
      Remote sensing is also benefiting from the quick development of deep learning algorithms for image analysis and classification tasks. In this paper, we evaluate the classification performance of a well-known Convolutional ...

    • openAccess   Transfer Learning for Convolutional Indoor Positioning Systems 

      Klus, Roman; Klus, Lucie; Talvitie, Jukka; Pihlajasalo, Jaakko; Torres-Sospedra, Joaquín; Valkama, Mikko IEEE (2021-11-29)
      Fingerprinting is a widely used technique in indoor positioning, mainly due to its simplicity. Usually, this technique is used with the deterministic k - Nearest Neighbors (k-NN) algorithm. Utilizing a neural network model ...

    • closedAccess   Trivariate non‐Gaussian copulas to analyze the spatial behavior of rat sightings 

      Ayyad, Carlos; Mateu, Jorge; Omidi, Mohammad; Tamayo Uria, Ibon; Mohammadzadeh, Mohsen Wiley (2018)
      The brown rat lives with man in a wide variety of environmental contexts and adversely affects public health by transmission of diseases, bites, and allergies. Understanding behavioral and spatial correlation aspects of ...

    • openAccess   Tsallis entropy for geometry simplification 

      Castelló Boscá, Pascual; González, Carlos; Sbert Casasayas, Mateu; Feixas, Miguel; Chover, Miguel MDPI Publishing (2011-09-29)
      This paper presents a study and a comparison of the use of different information-theoretic measures for polygonal mesh simplification. Generalized measures from Information Theory such as Havrda–Charva ́t–Tsallis entropy ...

    • openAccess   TUJI1 Dataset: Multi-device dataset for indoor localization with high measurement density 

      Klus, Lucie; Klus, Roman; Lohan, Elena Simona; Nurmi, Jari; Granell, Carlos; Valkama, Mikko; Talvitie, Jukka; Casteleyn, Sven; Torres-Sospedra, Joaquín Elsevier (2024-03-22)
      Positioning in indoor scenarios using signals of opportunity is an effective solution enabling accurate and reliable performance in Global Navigation Satellite System (GNSS)-obscured scenarios. Despite the availability of ...