Exploració per autor "Ramos Castro, Juan José"
Ara es mostren els items 45-64 de 99
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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
Accés obertA 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)
Article
Accés restringit per política de l'editorialOur 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)
Article
Accés obertNon-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)
Capítol de llibre
Accés restringit per política de l'editorial -
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)
Comunicació de congrés
Accés restringit per política de l'editorialSeismocardiography 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)
Text en actes de congrés
Accés restringit per política de l'editorialHelp4Mood 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)
Text en actes de congrés
Accés restringit per política de l'editorialHeart 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)
Text en actes de congrés
Accés restringit per política de l'editorialPhysical 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)
Text en actes de congrés
Accés obertLISA 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)
Article
Accés obertA 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)
Article
Accés obertThe 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 ... -
LISA pathfinder performance confirmed in an open-loop configuration: results from the free-fall actuation mode
Armano, M.; Audley, H.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Ramos Castro, Juan José (American Institute of Physics (AIP), 2019-09-11)
Article
Accés obertWe report on the results of the LISA Pathfinder (LPF) free-fall mode experiment, in which the control force needed to compensate the quasistatic differential force acting on two test masses is applied intermittently as a ... -
LISA Pathfinder platform stability and drag-free performance
Armano, M.; Audley, H.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Ramos Castro, Juan José (American Physical Society (APS), 2019-04-15)
Article
Accés obertThe science operations of the LISA Pathfinder mission have demonstrated the feasibility of sub-femto-g free fall of macroscopic test masses necessary to build a gravitational wave observatory in space such as LISA. While ... -
Low-frequency noise characterization of a magnetic field monitoring system using an anisotropic magnetoresistance
Mateos, Ignacio; Ramos Castro, Juan José; Lobo, J.A. (2015-11-01)
Article
Accés obertA detailed study about magnetic sensing techniques based on anisotropic magnetoresistive sensors shows that the technology is suitable for low-frequency space applications like the eLISA mission. Low noise magnetic ... -
Measuring the galactic cosmic ray flux with the LISA Pathfinder radiation monitor
Armano, M.; Audley, H.; Baird, J.; Ramos Castro, Juan José (2018-01-31)
Article
Accés obertTest mass charging caused by cosmic rays will be a significant source of acceleration noise for space-based gravitational wave detectors like LISA. Operating between December 2015 and July 2017, the technology demonstration ... -
MEMS miniaturized low-noise magnetic field sensor for the observation of sub-millihertz magnetic fluctuations in space exploration
Manyosa i Vilardell, Xavier; Roma Dollase, David; Arqué, M.; Bonastre Majoral, Biel; Jiménez Serres, Vicente; Ramos Castro, Juan José; Pons Nin, Joan; Martín Hernández, Víctor; Salvans Tort, Josep; Gómez, Susan F.; Domínguez Pumar, Manuel (Elsevier, 2024-05-15)
Article
Accés obertThe objective of this paper is to show that, using magnetic field modulation with a MEMS resonator, it is possible to reduce the noise floor of a commercial Tunneling Magnetic Resistance by one order of magnitude, in the ... -
Micrometeoroid events in LISA Pathfinder
Thorpe, J. I.; Slutsky, J.; Baker, John G.; Ramos Castro, Juan José (Institute of Physics (IOP), 2019-09-20)
Article
Accés obertThe zodiacal dust complex, a population of dust and small particles that pervades the solar system, provides important insight into the formation and dynamics of planets, comets, asteroids, and other bodies. We present a ... -
Mixing design, management and engineering students in challenge-based projects
Hassi, Lotta; Ramos Castro, Juan José; Leveratto, Luciana; Juhani Kurikka, Joona; Charosky Larrieu-Let, Guido; Utriainen, Tuuli Maria; Bragós Bardia, Ramon; Nordberg, Markus (2016)
Comunicació de congrés
Accés restringit per política de l'editorialThe aim of this work is to describe and discuss the benefits and limitations that have been detected along two iterations of a learning experience that has been carried out by three institutions located in Barcelona: ... -
Monitoring drivers' ventilation using an electrical bioimpedance systems: tests in a controlled enviornment
Macías Macías, Raúl; García González, Miguel Ángel; Ramos Castro, Juan José; Bragós Bardia, Ramon; Fernández Chimeno, Mireya (Springer Berlin Heidelberg, 2014-11-02)
Capítol de llibre
Accés restringit per política de l'editorialAs improving road safety is one of the first aims in the automotive world, several new techniques and methods are being researched in recent years. Some of them consist of monitoring the driver behavior to detect ... -
New indices for quantification of the power spectrum of heart rate variability time series without the need of any frequency band definition
Ramos Castro, Juan José; Padullés, M.; Marina, M.; Bescós, R.; Iglesias, X.; Rodriguez, F. A.; García González, Miguel Ángel; Fernández Chimeno, Mireya; Ferrer, J.; Escorihuela, R.M.; Parrado Romero, Eva; Capdevila, L.; Benitez, A.; Angulo, R. (IOP PUBLISHING LTD, 2011-06-07)
Article
Accés restringit per política de l'editorialThis paper presents a new family of indices for the frequency domain analysis of heart rate variability time series that do not need any frequency band definition. After proper detrending of the time series, a cumulated ...