Examinando por Autor "Gómez A."

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    Cerebral Cortex Atlas of Emotional States Through EEG Processing
    (SPRINGER, 2019-10-14) Gómez A.; Quintero O.L.; Lopez-Celani N.; Villa L.F.; Universidad EAFIT. Escuela de Ciencias; Modelado Matemático
    This paper addresses the cerebral cortex maps construction from EEG signals getting an information simplification method for an emotional state phenomenon description. Bi-dimensional density distribution of main signal features are identified and a comparison to a previous approach is presented. Feature extraction scheme is performed via windowed EEG signals Stationary Wavelet Transform with the Daubechies Family (1–10); nine temporal and spectral descriptors are computed from the decomposed signal. Recursive feature selection method based on training a Random forest classifier using a one-vs-all scheme with the full features space, then a ranking procedure via gini importance, eliminating the bottom features and restarting the entire process over the new subset. Stopping criteria is the maximum accuracy. The main contribution is the analysis of the resulting subset features as a proxy for cerebral cortex maps looking for the cognitive processes understanding from surface signals. Identifying the common location of different emotional states in the central and frontal lobes, allowing to be strong parietal and temporal lobes differentiators for different emotions. © 2020, Springer Nature Switzerland AG.
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    Simple-1: Development stage of the data transmission system for a solid propellant mid-power rocket model
    (IOP PUBLISHING LTD, 2017-01-01) Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
    This paper presents the development stage of a communication module for a solid propellant mid-power rocket model. The communication module was named. Simple-1 and this work considers its design, construction and testing. A rocket model Estes Ventris Series Pro II® was modified to introduce, on the top of the payload, several sensors in a CanSat form factor. The Printed Circuit Board (PCB) was designed and fabricated from Commercial Off The Shelf (COTS) components and assembled in a cylindrical rack structure similar to this small format satellite concept. The sensors data was processed using one Arduino Mini and transmitted using a radio module to a Software Defined Radio (SDR) HackRF based platform on the ground station. The Simple-1 was tested using a drone in successive releases, reaching altitudes from 200 to 300 meters. Different kind of data, in terms of altitude, position, atmospheric pressure and vehicle temperature were successfully measured, making possible the progress to a next stage of launching and analysis. © Published under licence by IOP Publishing Ltd.
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    Simple-1: Development stage of the data transmission system for a solid propellant mid-power rocket model
    (IOP PUBLISHING LTD, 2017-01-01) Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Universidad EAFIT. Departamento de Ciencias; Bioiversidad, Evolución y Conservación
    This paper presents the development stage of a communication module for a solid propellant mid-power rocket model. The communication module was named. Simple-1 and this work considers its design, construction and testing. A rocket model Estes Ventris Series Pro II® was modified to introduce, on the top of the payload, several sensors in a CanSat form factor. The Printed Circuit Board (PCB) was designed and fabricated from Commercial Off The Shelf (COTS) components and assembled in a cylindrical rack structure similar to this small format satellite concept. The sensors data was processed using one Arduino Mini and transmitted using a radio module to a Software Defined Radio (SDR) HackRF based platform on the ground station. The Simple-1 was tested using a drone in successive releases, reaching altitudes from 200 to 300 meters. Different kind of data, in terms of altitude, position, atmospheric pressure and vehicle temperature were successfully measured, making possible the progress to a next stage of launching and analysis. © Published under licence by IOP Publishing Ltd.
  • No hay miniatura disponible
    Ítem
    Simple-1: Development stage of the data transmission system for a solid propellant mid-power rocket model
    (IOP PUBLISHING LTD, 2017-01-01) Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Universidad EAFIT. Departamento de Ciencias; Modelado Matemático
    This paper presents the development stage of a communication module for a solid propellant mid-power rocket model. The communication module was named. Simple-1 and this work considers its design, construction and testing. A rocket model Estes Ventris Series Pro II® was modified to introduce, on the top of the payload, several sensors in a CanSat form factor. The Printed Circuit Board (PCB) was designed and fabricated from Commercial Off The Shelf (COTS) components and assembled in a cylindrical rack structure similar to this small format satellite concept. The sensors data was processed using one Arduino Mini and transmitted using a radio module to a Software Defined Radio (SDR) HackRF based platform on the ground station. The Simple-1 was tested using a drone in successive releases, reaching altitudes from 200 to 300 meters. Different kind of data, in terms of altitude, position, atmospheric pressure and vehicle temperature were successfully measured, making possible the progress to a next stage of launching and analysis. © Published under licence by IOP Publishing Ltd.