Now showing items 1-18 of 18

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      A Featureless Approach to 3D Polyhedral Building Modeling from Aerial Images 

      Hammoudi, Karim; Dornaika, Fadi (MDPI, 2011)
      This paper presents a model-based approach for reconstructing 3D polyhedral building models from aerial images. The proposed approach exploits some geometric and photometric properties resulting from the perspective ...
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      A Novel Micro- and Nano-Scale Positioning Sensor Based on Radio Frequency Resonant Cavities 

      Asua Uriarte, Estibaliz; Echevarría Ecenarro, Víctor; García Arribas, Alfredo; Feutchwanger Morales, Jorge; Portilla Rubín, Joaquín; Lucas, Julio (MDPI, 2014-06)
      In many micro- and nano-scale technological applications high sensitivity displacement sensors are needed, especially in ultraprecision metrology and manufacturing. In this work a new way of sensing displacement based on ...
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      A Self-Referencing Intensity Based Polymer Optical Fiber Sensor for Liquid Detection 

      Sánchez Montero, David; Vázquez, Carmen; Möllers, Ingo; Arrue Aramburu, Juan Antonio; Jäger, Dieter (MDPI, 2009-08)
      A novel self-referencing fiber optic intensity sensor based on bending losses of a partially polished polymer optical fiber (POF) coupler is presented. The coupling ratio (K) depends on the external liquid in which the ...
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      A Temperature Sensor Based on a Polymer Optical Fiber Macro-Bend 

      Tapetado Moraleda, Alberto; Vázquez García, Carmen; Zubia Zaballa, Joseba Andoni; Arrue Aramburu, Juan Antonio (MDPI, 2013-10)
      The design and development of a plastic optical fiber (POF) macrobend temperature sensor is presented. The sensor has a linear response versus temperature at a fixed bend radius, with a sensitivity of 1.92.10(-3) (degrees ...
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      An Embedded Stress Sensor for Concrete SHM Based on Amorphous Ferromagnetic Microwires 

      Olivera, Jesús; González, Margarita; Fuente, José Vicente; Varga, Rastislav; Zhukov Egorova, Arkady Pavlovich; Anaya, José Javier (MDPI, 2014-11)
      A new smart concrete aggregate design as a candidate for applications in structural health monitoring (SHM) of critical elements in civil infrastructure is proposed. The cement-based stress/strain sensor was developed by ...
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      An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig 

      García Esteban-Barcina, Iker; Beloki Perurena, Josu; Zubia Zaballa, Joseba Andoni; Aldabaldetreku Etxeberria, Gotzon; Illarramendi Leturia, María Asunción; Jiménez Hernández, Felipe (MDPI, 2013-06)
      When it comes to measuring blade-tip clearance or blade-tip timing in turbines, reflective intensity-modulated optical fiber sensors overcome several traditional limitations of capacitive, inductive or discharging probe ...
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      Classifier Subset Selection for the Stacked Generalization Method Applied to Emotion Recognition in Speech 

      Álvarez, Aitor; Sierra Araujo, Basilio; Arruti Illarramendi, Andoni; López Gil, Juan Miguel; Garay Vitoria, Néstor (MDPI, 2016-01)
      In this paper, a new supervised classification paradigm, called classifier subset selection for stacked generalization (CSS stacking), is presented to deal with speech emotion recognition. The new approach consists of an ...
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      Dealing with the Effects of Sensor Displacement in Wearable Activity Recognition 

      Baños, Oresti; Mate, Toth Attila; Damas, Miguel; Pomares, Héctor; Rojas, Ignacio (MDPI, 2014-06)
      Most wearable activity recognition systems assume a predefined sensor deployment that remains unchanged during runtime. However, this assumption does not reflect real-life conditions. During the normal use of such systems, ...
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      Design and Development of a Low-Cost Optical Current Sensor 

      Zubia Zaballa, Joseba Andoni; Casado, Luciano; Aldabaldetreku Etxeberria, Gotzon; Montero, Alfonso; Zubia, Eneko; Durana Apaolaza, Gaizka (MDPI, 2013-10)
      In this paper we demonstrate the design of a low-cost optical current sensor. The sensor principle is the Faraday rotation of a light beam through a magneto-optical material, SF2, when a magnetic field is present. The ...
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      Design of a Sensor Based on Plastic Optical Fibre (POF) to Measure Fluid Flow and Turbidity 

      Aiestaran Matxinandiarena, Pedro María; Arrue Aramburu, Juan Antonio; Zubia Zaballa, Joseba Andoni (MDPI, 2009-05)
      Although many optical fibre applications are based on their capacity to transmit optical signals with low losses, it can also be desirable for the optical fibre to be strongly affected by a certain physical parameter in ...
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      Fiber Bragg Gratings, IT Techniques and Strain Gauge Validation for Strain Calculation on Aged Metal Specimens 

      Montero, Ander; Sáez de Ocáriz, Idurre; López, Ion; Venegas, Pablo; Gómez, Javier; Zubia Zaballa, Joseba Andoni (MDPI, 2011-01)
      This paper studies the feasibility of calculating strains in aged F114 steel specimens with Fiber Bragg Grating (FBG) sensors and infrared thermography (IT) techniques. Two specimens have been conditioned under extreme ...
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      FTT-MA: A Flexible Time-Triggered Middleware Architecture for Time Sensitive, Resource-Aware AmI Systems 

      Noguero, Adrian; Calvo Gordillo, Isidro; Pérez González, Federico; Almeida, Luis (MDPI, 2013-05)
      There is an increasing number of Ambient Intelligence (AmI) systems that are time-sensitive and resource-aware. From healthcare to building and even home/office automation, it is now common to find systems combining ...
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      Hole-Phonon Relaxation and Photocatalytic Properties of Titanium Dioxide and Zinc Oxide: First-Principles Approach 

      Zhukov, V. P.; Tyuterev, V. G.; Tchoulkov Savkin, Evgueni Vladimirovich; Echenique Landiribar, Pedro Miguel (Hindawi Publishing, 2014)
      First-principles calculations for the temporal characteristics of hole-phonon relaxation in the valence band of titanium dioxide and zinc oxide have been performed. A first-principles method for the calculations of the ...
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      On the Selection of Non-Invasive Methods Based on Speech Analysis Oriented to Automatic Alzheimer Disease Diagnosis 

      López de Ipiña Peña, Miren Karmele; Alonso, Jesús Bernardino; Travieso, Carlos Manuel; Sole-Casals, Jordi; Eguiraun Martínez, Harkaitz; Faúndez Zanuy, Marcos; Ezeiza Ramos, Aitzol; Barroso Moreno, Nora; Ecay Torres, Miriam; Martínez-Lage Alvarez, Pablo; Martínez de Lizarduy Sturtze, Unai (MDPI, 2013-05)
      The work presented here is part of a larger study to identify novel technologies and biomarkers for early Alzheimer disease (AD) detection and it focuses on evaluating the suitability of a new approach for early AD diagnosis ...
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      Proof of Concept of Impact Detection in Composites Using Fiber Bragg Grating Arrays 

      Gómez, Javier; Jorge, Iagoba; Durana Apaolaza, Gaizka; Arrue Aramburu, Juan Antonio; Zubia Zaballa, Joseba Andoni; Aranguren Aramendia, Gerardo; Montero, Ander; López, Ion (MDPI, 2013-09)
      Impact detection in aeronautical structures allows predicting their future reliability and performance. An impact can produce microscopic fissures that could evolve into fractures or even the total collapse of the structure, ...
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      RESTful Discovery and Eventing for Service Provisioning in Assisted Living Environments 

      Parra, Jorge; Hossain, M. Anwar; Uribarren, Aitor; Jacob Taquet, Eduardo Juan (MDPI, 2014-05)
      Service provisioning in assisted living environments faces distinct challenges due to the heterogeneity of networks, access technology, and sensing/actuation devices in such an environment. Existing solutions, such as ...
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      Thin Magnetically Soft Wires for Magnetic Microsensors 

      Zhukova Zhukova, Valentina; Ipatov, Mihail; Zhukov Egorova, Arkady Pavlovich (MDPI, 2009-11)
      Recent advances in technology involving magnetic materials require development of novel advanced magnetic materials with improved magnetic and magneto-transport properties and with reduced dimensionality. Therefore magnetic ...
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      Virtual Sensors for On-line Wheel Wear and Part Roughness Measurement in the Grinding Process 

      Arriandiaga Laresgoiti, Ander; Portillo Pérez, Eva; Sánchez Galíndez, José Antonio; Cabanes Axpe, Itziar; Pombo Rodilla, Iñigo (MDPI, 2014-05)
      Grinding is an advanced machining process for the manufacturing of valuable complex and accurate parts for high added value sectors such as aerospace, wind generation, etc. Due to the extremely severe conditions inside ...