This work proposes the development of a sociometric sensor capable of detecting proximity, movement and verbal interaction between people. The sensor will allow measuring the level of existing ...interrelations between the collaborators of an organization, in order to determine and to measure the organizational climate. The way to evaluate the current organizational climate is subjective, through surveys that are not accurate and that make the results are not adequate. The sensors developed until now focus on proximity or movement, but not on the 3 proposed variables: movement, proximity and speech. The proposed portable device consists of a proximity detector using RSSI (Received Signal Strength Indicator) based on the NodeMCU WIFI ESP 8266 module. It also has a motion detector that uses an accelerometer and finally a voice detection algorithm, acquired via microphone, aimed at determining verbal interaction between people. The validation of the equipment was done by measuring the 3 variables in a sample of 50 people. The results show a percentage of proximity detection of 90% up to a distance of 3 meters between individuals, a percentage of success of 92.5% in the detection of posture and physical activity and a percentage of success of 87.5% in the detection of verbal interaction between people.
La presente investigación muestra los modelos que permiten predecir la geometría del cordón de soldadura a tope de aceros inoxidables dúplex tipo 2205. Para obtener dichos modelos se empleó una ...metodología que permite utilizar los parámetros operacionales más importantes de la soldadura, como son: la intensidad de corriente (I), el voltaje (E), la velocidad de pasada (v) y calor aportado (HI). Se realizaron diferentes combinaciones de dichos parámetros para realizar la soldadura por arco sumergido (SAW). A cada muestra se le realizó la medición de la geometría del cordón a través de un barrido de 360° con 38 mediciones para obtener los modelos, los cuales luego fueron validados a través de gráficas de control. Se pudo observar que al aumentar la intensidad de corriente y el calor aportado, aumenta la geometría del cordón, es decir, la penetración, el ancho y la altura, mientras que lo inverso ocurre cuando se incrementa la velocidad de pasada
The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to large uncertainties in the properties of planetary cores. ...Exoplanets that have undergone rare evolutionary processes provide a route to understanding planetary interiors. Planets found in and near the typically barren hot-Neptune 'desert' (a region in mass-radius space that contains few planets) have proved to be particularly valuable in this regard. These planets include HD149026b, which is thought to have an unusually massive core, and recent discoveries such as LTT9779b and NGTS-4b, on which photoevaporation has removed a substantial part of their outer atmospheres. Here we report observations of the planet TOI-849b, which has a radius smaller than Neptune's but an anomalously large mass of \(39.1^{+2.7}_{-2.6}\) Earth masses and a density of \(5.2^{+0.7}_{-0.8}\) grams per cubic centimetre, similar to Earth's. Interior structure models suggest that any gaseous envelope of pure hydrogen and helium consists of no more than \(3.9^{+0.8}_{-0.9}\) per cent of the total planetary mass. The planet could have been a gas giant before undergoing extreme mass loss via thermal self-disruption or giant planet collisions, or it could have avoided substantial gas accretion, perhaps through gap opening or late formation. Although photoevaporation rates cannot account for the mass loss required to reduce a Jupiter-like gas giant, they can remove a small (a few Earth masses) hydrogen and helium envelope on timescales of several billion years, implying that any remaining atmosphere on TOI-849b is likely to be enriched by water or other volatiles from the planetary interior. We conclude that TOI-849b is the remnant core of a giant planet.
The K2 mission has recently begun to discover new and diverse planetary systems. In December 2014 Campaign 1 data from the mission was released, providing high-precision photometry for ~22000 objects ...over an 80 day timespan. We searched these data with the aim of detecting further important new objects. Our search through two separate pipelines led to the independent discovery of K2-19b \& c, a two-planet system of Neptune sized objects (4.2 and 7.2 \(R_\oplus\)), orbiting a K dwarf extremely close to the 3:2 mean motion resonance. The two planets each show transits, sometimes simultaneously due to their proximity to resonance and alignment of conjunctions. We obtain further ground based photometry of the larger planet with the NITES telescope, demonstrating the presence of large transit timing variations (TTVs), and use the observed TTVs to place mass constraints on the transiting objects under the hypothesis that the objects are near but not in resonance. We then statistically validate the planets through the \texttt{PASTIS} tool, independently of the TTV analysis.
La presente investigación muestra dos modelos empíricos que permiten predecir la geometría del cordón de soldadura a tope de un acero inoxidable dúplex tipo 2205. Para obtener dichos modelos se ...empleó una metodología que permite utilizar los parámetros operacionales más importantes de la soldadura, como son: la intensidad de corriente (I), el voltaje (E), la velocidad de pasada (v) y calor aportado (HI). Se realizaron diferentes combinaciones de dichos parámetros para realizar la soldadura por arco sumergido (SAW). A cada muestra se le realizó la medición de la geometría del cordón a través de un barrido de 360° con 38 mediciones para obtener los modelos, los cuales luego fueron validados a través de gráficas de control. Se pudo observar que al aumentar la intensidad de corriente y el calor aportado, aumenta la geometría del cordón, es decir, la penetración, el ancho y la altura, mientras que lo inverso ocurre cuando se incrementa la velocidad de pasada.
La presente investigación muestra dos modelos empíricos que permiten predecir la geometría del cordón de soldadura a tope
de un acero inoxidable dúplex tipo 2205. Para obtener dichos modelos se ...empleó una metodología que permite utilizar los parámetros
operacionales más importantes de la soldadura, como son: la intensidad de corriente (I), el voltaje (E), la velocidad de pasada (v) y calor
aportado (HI). Se realizaron diferentes combinaciones de dichos parámetros para realizar la soldadura por arco sumergido (SAW). A cada
muestra se le realizó la medición de la geometría del cordón a través de un barrido de 360° con 38 mediciones para obtener los modelos,
los cuales luego fueron validados a través de gráficas de control. Se pudo observar que al aumentar la intensidad de corriente y el calor
aportado, aumenta la geometría del cordón, es decir, la penetración, el ancho y la altura, mientras que lo inverso ocurre cuando se incrementa
la velocidad de pasada.
Peer Reviewed
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