Ara es mostren els items 22-41 de 98

    • Camera-based method for respiratory rhythm extraction from a lateral perspective 

      Mateu Mateus, Marc; Guede Fernández, Federico; García González, Miguel Ángel; Ramos Castro, Juan José; Fernández Chimeno, Mireya (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-25)
      Article
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      This work proposes a new method based on computer vision algorithms to measure the respiratory rhythm of a subject from a lateral perspective. The proposed algorithm consists on tracking the motion of the intercostal and ...
    • Capacitive sensing of test mass motion with nanometer precision over millimeter-wide sensing gaps for space-borne gravitational reference sensors 

      Audley, H.; Auger, G.; Baird, J.; Binetruy, P.; Caleno, M.; Cesarini, A.; Diepholz, I; Dixon, G; Dolesi, R; Ferraioli, L.; Heinzel, G; Hollington, D.; Karnesis, N.; Martín-Porqueras, F.; Fernandez Sopuerta, Carlos; Texier, D.; Vitale, S.; Wanner, G; Ward, Harold; Ramos Castro, Juan José (2017-09-26)
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      We report on the performance of the capacitive gap-sensing system of the Gravitational Reference Sensor on board the LISA Pathfinder spacecraft. From in-flight measurements, the system has demonstrated a performance, down ...
    • Challenge based education: an approach to innovation through multidisciplinary teams of students using Design Thinking 

      Charosky Larrieu-Let, Guido; Leveratto, Luciana; Hassi, Lotta; Papageorgiou, K.; Ramos Castro, Juan José; Bragós Bardia, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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      This work aims to describe and discuss the benefits and learning outcomes detected along four iterations of a learning experience carried out by three institutions: ESADE Business School, IED Istituto Europeo di Design and ...
    • Changes in heart rate variability (HRV) in field hockey players during the 2006 World Cup 

      Rodas Font, Gil; Yanguas Leyes, Javier; Pedret, Carles; Ramos Castro, Juan José; Capdevila, L. (2011-07)
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      The aim of this study is to determine the changes in heart rate variability (HRV) in field hockey players during the course of a world championship. The Spanish national team took part in the study by making daily records ...
    • Changes in heart rate variability indexes due to drowsiness in professional drivers measured in a real environment 

      García González, Miguel Ángel; Fernández Chimeno, Mireya; Ramos Castro, Juan José (Computing in Cardiology, 2012)
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      The study aims to assess the changes in Heart Rate Variability (HRV) indexes in healthy subjects whi le driving in a real environment in order to detect drowsiness. The ECG of ten professional drivers was acquired ...
    • Characteristics and energy dependence of recurrent galactic cosmic-ray flux depressions and of a forbush decrease with LISA Pathfinder 

      Armano, M.; Audley, H.; Baird, J.; Bassan, M.; Benella, S.; Lobo, J.A.; Ramos Castro, Juan José (2018-02-16)
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      Accés obert
      Galactic cosmic-ray (GCR) energy spectra observed in the inner heliosphere are modulated by the solar activity, the solar polarity and structures of solar and interplanetary origin. A high counting rate particle detector ...
    • Characterization and verification of the Rita payload hyperspectral imager in Alainsat-1, as part of the 2nd IEEE GRSS student grand challenge 

      Contreras Benito, Luis Juan; Gonga i Siles, Amadeu; Crisan, Ieremia; Pérez Portero, Adrián; Garcia Morilla, Alejandro; Gràcia i Solà, Guillem; Ramos Castro, Juan José; Jallad, Abdul-Halim; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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      The Remote sensing and Interference detector with radiome-Try and vegetation Analysis (RITA Payload) [1] is a development of the UPC NanoSat Lab, aimed at Earth Observation (EO). It is one of the winners of the Second IEEE ...
    • Charge-induced force noise on free-falling test masses: results from LISA pathfinder 

      Armano, M.; Audley, H.; Auger, G.; Baird, J.; Binetruy, P.; Ramos Castro, Juan José (2017-04-26)
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      Accés obert
      We report on electrostatic measurements made on board the European Space Agency mission LISA Pathfinder. Detailed measurements of the charge-induced electrostatic forces exerted on free-falling test masses (TMs) inside the ...
    • Charging of free-falling test masses in orbit due to cosmic rays: results from LISA Pathfinder 

      Armano, M.; Audley, H.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Castelli, Eleonora; Cavalleri, A.; Cesarini, A.; Cruise, M.; Danzmann, K.; De Deus Silvia, Marcus; Diepholz, I; Dixon, G.; Dolesi, R; Ramos Castro, Juan José (American Physical Society, 2023-03-22)
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      Accés obert
      A comprehensive summary of the measurements made to characterize test-mass charging due to the space environment during the LISA Pathfinder mission is presented. Measurements of the residual charge of the test mass after ...
    • Comparison of omega wave system and polar S810i to detect R-R intervals at rest 

      Parrado Romero, Eva; García González, Miguel Ángel; Ramos Castro, Juan José; Cervantes Blasquez, Julio Cesar; Rodas Font, Gil; Capdevila Ortis, Lluís (2010)
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      Accés restringit per política de l'editorial
      The present study was performed to compare R-R interval data and heart rate variability indices obtained from the Polar S810i and the Omega Wave Sport System for a total of 96 adults in a supine position. Data were ...
    • Comparison of video-based methods for respiration rhythm measurement 

      Mateu Mateus, Marc; Guede Fernández, Federico; Ferrer Mileo, Víctor; García González, Miguel Ángel; Ramos Castro, Juan José; Fernández Chimeno, Mireya (2019-05-01)
      Article
      Accés obert
      The aim of this work is to characterize the di erences in the respiratory rhythm obtained through three video based methods by comparing the obtained respiratory signals with the one obtained with the gold standard method ...
    • Constraints on LISA pathfinder's self-gravity: design requirements, estimates and testing procedures 

      Armano, M.; Audley, H.; Auger, G.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Brandt, N.; Bursi, A.; Caleno, M.; Cavalleri, A.; Cesarini, A.; Cruise, M.; Danzmann, K.; Ramos Castro, Juan José (2016-11-08)
      Article
      Accés obert
      LISA Pathfinder satellite was launched on 3 December 2015 toward the Sun–Earth first Lagrangian point (L1) where the LISA Technology Package (LTP), which is the main science payload, will be tested. LTP achieves measurements ...
    • Contactless electrical bioimpedance system for monitoring ventilation. A biodevice for vehicle environment 

      Macías Macías, Raúl; García González, Miguel Ángel; Ramos Castro, Juan José; Bragós Bardia, Ramon; Fernández Chimeno, Mireya (SciTePress, 2013)
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      Nowadays, automotive companies are focused in improving road traffic safety. For that, not only the vehicle performance is improved but also the driver behavior is monitored. This could be done in many ways. One of them ...
    • Cubesat-based demonstrator for optical Earth observation 

      Jové Casulleras, Roger; Camps Carmona, Adriano José; Ramos Castro, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2012)
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      This paper introduces UPCSat-1 , the first project of the Universitat Politècnica de Catalunya to build and launch a pico-satellite. Its main scope is to develop, construct, assembly, test and launch into a Low Earth ...
    • Description of the Rita payload aboard AlainSat-1, A 3U educational Cubesat 

      Gonga Siles, Amadeu; Pérez Portero, Adrián; Fernandez Capon, Lara Pilar; Garcia Morilla, Alejandro; Gràcia i Solà, Guillem; Contreras Benito, Luis Juan; Ramos Castro, Juan José; Camps Carmona, Adriano José; Jallad, Abdul-Halim (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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      The Remote sensing and Interference detector with radiome-Try and vegetation Analysis (RITA) payload was selected in 2019 the 2nd GRSS Student Grand Challenge to fly onboard AlainSat-1, a 3U CubeSat developed at the National ...
    • Design of the magnetic diagnostics unit onboard LISA Pathfinder 

      Díaz Aguiló, Marc; Mateos, Ignacio; Ramos Castro, Juan José; Lobo, J.A.; García-Berro Montilla, Enrique (2013-04)
      Article
      Accés obert
      LISA (Laser Interferometer Space Antenna) is a joint mission of ESA and NASA which aims to be the first space-borne gravitational wave observatory. Due to the high complexity and technological challenges that LISA will ...
    • Design, implementation, and testing of a microwave radiometer for RITA, a 1U payload on board of the AlainSat-1 

      Gonga Siles, Amadeu; Pérez Portero, Adrián; Badia Ballús, Marc; Fernández García-Escudero, Luis; Ramos Castro, Juan José; Jallad, Abdul-Halim; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2022)
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      In 2019, the IEEE 2nd GRSS Student Grand Challenge selected the Remote sensing and Interference detector with radiomeTry and vegetation Analysis (RITA) payload to fly on board of AlainSat-1, a 3U CubeSat from the United ...
    • Development of a system to test somnolence detectors with drowsy drivers 

      Lopez De la O, Jaime; Rodriguez Ibañez, Noelia; Nombela, Mario; Barrios, Jose Manuel; García González, Miguel Ángel; Ramos Castro, Juan José; Fernández Chimeno, Mireya (2012)
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    • Differences in QRS locations due to ECG lead: relationship with breathing 

      García González, Miguel Ángel; Argelagós Palou, Ariadna; Fernández Chimeno, Mireya; Ramos Castro, Juan José (2013)
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      Results of heart rate variability analysis depend on the accuracy of the RR time series that is measured only in one lead of the ECG. RR time series can subtly change from lead to lead. We have obtained the ECG of 21 healthy ...
    • Do ventricular repolarization interval ratios depend on heart rate and should they be rate-corrected? 

      Alvarado Serrano, Carlos; Ramos Castro, Juan José; Pallàs-Areny, Ramon (Institute of Electrical and Electronics Engineers, 2003-09)
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      QT interval decreases with increasing heart rate (HR), hence to define normal values of QT interval for different heart rates requires the application of a QT interval rate correction formula. However, the influence of HR ...