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    • openAccess   Direct retrieval method of the effective permittivity and permeability of bulk semi-infinite metamaterials by variable-angle spectroscopic ellipsometry 

      Flamant, Quentin; Torrent, Daniel; Gómez-Graña, Sergio; Grigorenko, Alexander N.; Kravets, Vasyl G.; Barois, Philippe; Ponsinet, Virginie; Baron, Alexandre OSA Publishing (2019)
      In this work, we present a simple method for the direct retrieval of the effective permittivity and permeability of a bulk semi-infinite metamaterial from variable-angle spectroscopic ellipsometry measurements. Starting ...

    • openAccess   Directional analysis for point patterns on linear networks 

      Moradi, Mehdi; Mateu, Jorge; Comas, Carles Wiley (2020)
      Statistical analysis of point processes often assumes that the underlying process is isotropic in the sense that its distribution is invariant under rotation. For point processes on R2 , some tests based on the K- and ...

    • openAccess   Discovering location based services: A unified approach for heterogeneous indoor localization systems 

      Furfari, Francesco; Crivello, Antonino; Baronti, Paolo; Barsocchi, Paolo; GIROLAMI, MICHELE; Palumbo, Filippo; Quezada Gaibor, Darwin; Mendoza-Silva, Germán Martín; Torres-Sospedra, Joaquín Elsevier B.V. (2021-03-01)
      The technological solutions and communication capabilities offered by the Internet of Things paradigm, in terms of raising availability of wearable devices, the ubiquitous internet connection, and the presence on the ...

    • closedAccess   Discovering places of interest in everyday life from smartphone data 

      Montoliu Colás, Raul; Blom, Jan; Gatica-Perez, Daniel Springer (2013)
      In this paper, a new framework to discover places-of-interest from multimodal mobile phone data is presented. Mobile phones have been used as sensors to obtain location information from users’ real lives. A place-of-interest ...

    • openAccess   Dispersion management in two-photon microscopy by using diffractive optical elements 

      Mendoza-Yero, Omel; Pérez Vizcaíno, Jorge; Mínguez-Vega, Gladys; Martinez Cuenca, Raul; Andrés, Pedro; Lancis, Jesús Optical Society of America (2013)
      We demonstrate efficient generation of wide-field fluorescence signals in two-photon microscopy exploiting diffractive optical elements and short pulses by using a dispersion-compensated beam delivery optics module. ...

    • openAccess   Dissimilarity-Based Linear Models for Corporate Bankruptcy Prediction 

      García, Vicente; Marqués Marzal, Ana Isabel; Sánchez Garreta, Josep Salvador; Ochoa Domínguez, Humberto de Jesús Springer (2019-03)
      Bankruptcy prediction has acquired great relevance for financial institutions due to the complexity of global economies and the growing number of corporate failures, especially since the world financial crisis of 2008. In ...

    • closedAccess   Distance-based beta regression for prediction of mutual funds 

      Melo, Oscar O.; Melo, Carlos E.; Mateu, Jorge Springer (2015-01)
      In the context of regression with a beta-type response variable, we propose a new method that links two methodologies: a distance-based model, and a beta regression with variable dispersion. The proposed model is useful ...

    • openAccess   Do Monetary Incentives Influence Users’ Behavior in Participatory Sensing? 

      Ngo, Manh Khoi; Casteleyn, Sven; Moradi, Mehdi; Pebesma, Edzer MDPI (2018)
      Participatory sensing combines the powerful sensing capabilities of current mobile devices with the mobility and intelligence of human beings, and as such has to potential to collect various types of information at a high ...

    • openAccess   Downstream Services for Rice Crop Monitoring in Europe: From Regional to Local Scale 

      Busetto, Lorenzo; Casteleyn, Sven; Granell, Carlos; Pepe, Monica; Barbieri, Massimo; Campos-Taberner, Manuel; CASA, Raffaele; Collivignarelli, Francesco; Confalonieri, Roberto; Crema, Alberto; García Haro, Francisco Javier; Luca Gatti; Gatti, Luca; Gitas, Ioannis; González-Pérez, Alberto; Grau Muedra, Gonçal Andreu; Guarneri, Tommaso; Holecz, Francesco; Katsantonis, Dimitrios; Minakou, Chara; Miralles, Ignacio; Movedi, Ermes; Nutini, Francesco; Pagani, Valentina; Palombo, Angelo; DI Paola, Francesco; Pascucci, Simone; Pignatti, Stefano; RAMPINI, ANNA; Ranghetti, Luigi; Ricciardelli, Elisabetta; Romano, Filomena; Stavrakoudis, Dimitris; STROPPIANA, DANIELA; VIGGIANO, MARIASSUNTA; BOSCHETTI, MIRCO Institute of Electrical and Electronics Engineers (IEEE) (2017-04)
      The ERMES agromonitoring system for rice cultivations integrates EO data at different resolutions, crop models, and user-provided in situ data in a unified system, which drives two operational downstream services for rice ...

    • openAccess   Dual electro-optic comb spectroscopy using a single pseudo-randomly driven modulator 

      Durán, Vicente; Escobar-Vera, Camilo; Soriano-Amat, Miguel; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario Optica Publishing Group (2022-07-04)
      We present a dual-comb scheme based on a single intensity modulator driven by inexpensive board-level pseudo-random bit sequence generators. The result is a simplified architecture that exhibits a long mutual coherence ...

    • openAccess   Dual-mode optical microscope based on single-pixel imaging 

      Rodríguez Jiménez, Ángel David; Clemente Pesudo, Pedro Javier; Tajahuerce, Enrique; Lancis, Jesús Elsevier (2016-03)
      We demonstrate an inverted microscope that can image specimens in both reflection and transmission modes simultaneously with a single light source. The microscope utilizes a digital micromirror device (DMD) for patterned ...

    • openAccess   Dynamic Control of Interference Effects Between Optical Filaments through Programmable Optical Phase Modulation 

      Borrego Varillas, Rocío; Pérez Vizcaíno, Jorge; Mendoza-Yero, Omel; Vázquez de Aldana, Javier R.; Mínguez-Vega, Gladys; Lancis, Jesús IEEE (2016-06)
      Light beams shaped by programmable megapixel spatial light modulators (SLMs) are key to broadening the applications of photonics. In this paper, we consider the application of a SLM for the generation of two mutually ...

    • openAccess   Dynamic freeform diffractive lens 

      Mendoza-Yero, Omel Optica Publishing Group (2023-03-31)
      In the framework of the scalar theory of diffraction a surface-pixeled convergent lens for arbitrary amplitude and phase modulation along the depth of focus is introduced. This complex diffractive lens is computer-generated ...

    • openAccess   Dynamics of Fractional Vortex Beams at Fraunhofer Diffraction Zone 

      Peters, Eduardo; Funes, Gustavo; Martínez-León, Lluís; Tajahuerce, Enrique MDPI (2022-07-09)
      Fractional vortex beams (FVBs) possess unique topological properties that are manifested in the vortex distribution. However, there are still discrepancies in the value of the vortex strength of FVBs at the far field. In ...

    • openAccess   E-participation adoption models research in the last 17 years: A weight and meta-analytical review 

      Naranjo-Zolotov, Mijail Juanovich; Oliveira, Tiago; Casteleyn, Sven Elsevier (2018-04)
      This article explores the main factors that drive the adoption of e-participation. A weight and meta-analysis was carried out from previous quantitative research studies related to individual e-participation adoption ...

    • openAccess   Easily Solving Dynamic Programming Problems in Haskell by Memoization of Hylomorphisms 

      Llorens, David; Vilar Torres, Juan Miguel Wiley (2020)
      Dynamic Programming is a well known algorithmic technique that solves problems by a combination of dividing a problem into subproblems and using memoization to avoid an exponential growth of the costs. We show how to ...

    • openAccess   Edge modes for flexural waves in quasi-periodic linear arrays of scatterers 

      Martí-Sabaté, Marc; Torrent, Daniel American Institute of Physics (2021-08-13)
      We present a multiple scattering analysis of robust interface states for flexural waves in thin elastic plates. We show that finite clusters of linear arrays of scatterers built on a quasi-periodic arrangement support ...

    • openAccess   Educación para el Desarrollo en los Programas Universitarios para Mayores (PUM) en España 

      Martínez Martínez, Miguel Ángel; Caballer Miedes, Antonio Universidad Loyola Andalucía (2019)
      En las últimas décadas, los Programas Universitarios para Mayores (PUM) han experimentado un importante desarrollo y crecimiento en España como respuesta a los cambios socio–demográficos acaecidos en nuestro país, en ...

    • openAccess   Educational Videogame to Learn the Periodic Table: Design Rationale and Lessons Learned 

      Traver, V. Javier; Leiva, Luis A.; Martí-Centelles, Vicente; RUBIO-MAGNIETO, JENIFER American Chemical Society (2021-06-08)
      The periodic table allows students to easily understand the chemical elements and predict the behavior of theoretical yet undiscovered new elements. Many memorization techniques have been used for learning the periodic ...

    • closedAccess   Effect of a cyberbullying prevention program integrated in the primary education curriculum 

      Flores Buils, Raquel; Caballer Miedes, Antonio; Romero Oliver, Mercedes Elsevier (2020)
      Most cases of cyberbullying occur in secondary education, which is the stage where many cyberbullying programs are focused. This situation has given rise to the design, implementation and evaluation of a cyberbullying ...