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Ara es mostren els items 36-55 de 99

    • 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
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      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 ...

    • Driver drowsiness detection based on respiratory signal analysis 

      Guede Fernández, Federico; Fernández Chimeno, Mireya; Ramos Castro, Juan José; García González, Miguel Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2019-06-24)
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      Drowsy driving is a prevalent and serious public health issue that deserves attention. Recent studies estimate around 20% of car crashes have been caused by drowsy drivers. Nowadays, one of the main goals in the development ...

    • Drowsiness detection by thoracic effort signal analysis in real driving environments 

      Rodriguez Ibáñez, Noelia; García González, Miguel Ángel; Fernández Chimeno, Mireya; Ramos Castro, Juan José (2011)
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      Detection of drowsiness while driving is a leading objective in advanced driver assistance systems. This work presents a new index to assess the alertness state of drivers based on the respiratory ...

    • Drowsiness detection by thoracic effort signal snalysis with professional drivers in real environments 

      Rodriguez Ibañez, Noelia; García González, Miguel Ángel; Ramos Castro, Juan José; Fernández Chimeno, Mireya (2011)
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      Objective : The aim of this work is to develop a new index to assess the alertness state of drivers based on the respiratory dynamics derived f rom an inductive band. Background : Detection of drowsiness while driving ...

    • Estimation of the uncertainty in time domain indices of RR time series 

      García González, Miguel Ángel; Fernández Chimeno, Mireya; Ramos Castro, Juan José (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-03-31)
      Article
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      A method for estimating the uncertainty in time-domain indices of RR time series is described. The method relies on the central limit theorem that states that the distribution of a sample average of independent samples has ...

    • Facial video-based photoplethysmography to detect HRV at rest 

      Moreno Sánchez, Jordi; Ramos Castro, Juan José; Movellan, J; Parrado Romero, Eva; Rodas Font, Gil; Capdevila Ortis, Lluís (2015-06-01)
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      Our aim is to demonstrate the usefulness of photoplethysmography (PPG) for analyzing heart rate variability (HRV) using a standard 5-min test at rest with paced breathing, comparing the results with real RR intervals and ...

    • Forbush decreases and <2 day GCR flux non-recurrent variations studied with LISA pathfinder 

      Armano, M.; Audley, H.; Baird, J.; Benella, S.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Ramos Castro, Juan José (Institute of Physics (IOP), 2019-04-01)
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      Non-recurrent short-term variations of the galactic cosmic-ray (GCR) flux above 70 MeV n-1 were observed between 2016 February 18 and 2017 July 3 on board the European Space Agency LISA Pathfinder (LPF) mission orbiting ...

    • Gold standard generation using electrooculogram signal for drowsiness detection in simulator conditions 

      Rodríguez Ibáñez, Noelia; Meca-Calderón, Pablo; García González, Miguel Ángel; Ramos Castro, Juan José; Fernández Chimeno, Mireya (Springer, 2014-11-02)
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    • Heart rate variability analysis using a seismocardiogram signal 

      Ramos Castro, Juan José; Moreno, J.; Miranda-Vidal, H.; García González, Miguel Ángel; Fernández Chimeno, Mireya; Rodas, G.; Capdevila, L. (IEEE, 2012)
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      Seismocardiography is a simple and non invasive method of recording cardiac activity fro m the movements of the body caused by heart pumping. In this preliminary study we use a smartphone to record this acceleration and ...

    • Help4Mood: testing and achievements of the first wireless sensor network prototype 

      Pérez Díaz de Cerio, David; Ruiz Boqué, Sílvia; Rosell Ferrer, Francisco Javier; Ramos Castro, Juan José; Colomé Castellví, Josep Maria (2012)
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      Help4Mood is a closed loop approach supporting the control, communication and treatment management of patients with Major Depression. The first out of the three main components of the Help4Mood solution is the Personal ...

    • HRV based Health&Sport markers using video from the face 

      Capdevila, Ll.; Moreno, Jordi; Movellan, Javier; Parrado Romero, Eva; Ramos Castro, Juan José (IEEE, 2012)
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      Heart Rate Variability (HRV) is an indicator of health status in the general population and of adaptatio n to stress in athletes. In this paper we compare the performance of two systems to measure HRV: (1) A commerc ...

    • Improvement of the actimetry agreement among sites by proper choice of signal processing stages 

      García González, Miguel Ángel; Giovinazzo, Giuseppe; Gomez Bule, Rafael; Landi, Francesca; Ramos Castro, Juan José; Rosell Ferrer, Francisco Javier (2012)
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      Physical activity (PA) has been identified as a key health indicator and has been assessed in multiple studies as the study of cardiovascular diseases, diabetes mellitus, obesity and psychological conditions. For this ...

    • In-flight Diagnostics in LISA Pathfinder 

      Lobo Gutiérrez, José Alberto; Nofrarías, M.; Ramos Castro, Juan José; Sanjuan, J.; Conchillo, A; Ortega, J.A.; Xirgu, X; Araujo, H.; Boatella, C.; Chmeissani, M.; Grimani, C.; Puigdengoles, C.; Wass, P.; García-Berro Montilla, Enrique; García, S.; Martínez, L.M.; Montero, G. (American Institute of Physics, 2006-12)
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      LISA PathFinder (LPF) will be flown with the objective to test in space key technologies for LISA. However its sensitivity goals are, for good reason, one order of magnitude less than those which LISA will have to meet, ...

    • Interpolation of the magnetic field at the test masses in eLISA 

      Mateos, I.; Díaz Aguiló, Marc; Ramos Castro, Juan José; García-Berro Montilla, Enrique; Lobo, J.A. (2015-08-20)
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      A feasible design for a magnetic diagnostics subsystem for eLISA will be based on that of its precursor mission, LISA Pathfinder. Previous experience indicates that magnetic field estimation at the positions of the test ...

    • LISA pathfinder micronewton cold gas thrusters: in-flight characterization 

      Armano, M.; Audley, H.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Ramos Castro, Juan José (American Physical Society (APS), 2019-06-28)
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      The LISA Pathfinder (LPF) mission has demonstrated the ability to limit and measure the fluctuations in acceleration between two free falling test masses down to sub-femto-g levels. One of the key elements to achieve such ...