Examinando por Autor "Torres, G."

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  • Miniatura
    Ítem
    Estructura Factorial y Confiabilidad del Cuestionario de Satisfacción Académica en Estudiantes de Medicina Chilenos
    (AIDEP, 2015) Inzunza, B.; Ortiz, L.; Pérez, C.; Villalobos, C.; Torres, G.; McColl Calvo, P.; Meyer Kother, A.; Matus Betancourt, O.; Bastías Vega, N.; Bustamante Durán, C.
    El presente estudio analiza la estructura factorial y confiabilidad del cuestionario de satisfacción académica (CSA) en una muestra de 563 estudiantes de medicina, entre 19 y 29 años (media de 20,42); provenientes de cuatro universidades chilenas. Una vez finalizada la traducción al castellano se exploró la validez de contenido de los ítems mediante un juicio de expertos. La estructura factorial del cuestionario se analizó a través de un análisis factorial exploratorio empleando el método Análisis de Ejes Principales (AEP). Los resultados preliminares de la fiabilidad y validez del instrumento han mostrado que la estructura de un factor es viable y adecuada de acuerdo a los requisitos psicométricos establecidos, aunque se recomiendan futuros estudios que evalúen su validez y confiabilidad en otros programas de pregrado.
  • Miniatura
    Ítem
    The TESS Input Catalog and Candidate Target List
    (Institute of Physics Publishing, 2018-09) Stassun, K.G.; Oelkers, R.J.; Pepper, J.; Paegert, M.; Lee, N.D.; Torres, G.; Latham, D.W.; Charpinet, S.; Dressing, C.D.; Huber, D.; Kane, S.R.; Lépine, S.; Mann, A.; Muirhead, P.S.; Rojas-Ayala, B.; Silvotti, R.; Fleming, S.W.; Levine, A.; Plavchan, P.
    The Transiting Exoplanet Survey Satellite (TESS) will be conducting a nearly all-sky photometric survey over two years, with a core mission goal to discover small transiting exoplanets orbiting nearby bright stars. It will obtain 30 minute cadence observations of all objects in the TESS fields of view, along with two-minute cadence observations of 200,000-400,000 selected stars. The choice of which stars to observe at the two-minute cadence is driven by the need to detect small transiting planets, which leads to the selection of primarily bright, cool dwarfs. We describe the catalogs assembled and the algorithms used to populate the TESS Input Catalog (TIC), including plans to update the TIC with the incorporation of the Gaia second data release in the near future. We also describe a ranking system for prioritizing stars according to the smallest transiting planet detectable, and assemble a Candidate Target List (CTL) using that ranking. We discuss additional factors that affect the ability to photometrically detect and dynamically confirm small planets, and we note additional stellar populations of interest that may be added to the final target list. The TIC is available on the STScI MAST server, and an enhanced CTL is available through the Filtergraph data visualization portal system at the URL http://filtergraph.com/tess_ctl © 2018. The American Astronomical Society. All rights reserved.