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Träfflista för sökning "WFRF:(Acevedo Suárez J. A.) "

Sökning: WFRF:(Acevedo Suárez J. A.)

  • Resultat 1-10 av 13
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1.
  • Bernal, Ximena E., et al. (författare)
  • Empowering Latina scientists
  • 2019
  • Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 363:6429, s. 825-826
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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2.
  • Castro-González, A., et al. (författare)
  • The K2-OjOS Project*New and revisited planets and candidates in K2 campaigns 5, 16, & 18
  • 2022
  • Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 509:1, s. 1075-1095
  • Tidskriftsartikel (refereegranskat)abstract
    • We present the first results of K2-OjOS, a collaborative project between professional and amateur astronomers primarily aimed to detect, characterize, and validate new extrasolar planets. For this work, 10 amateur astronomers looked for planetary signals by visually inspecting the 20 427 light curves of K2 campaign 18 (C18). They found 42 planet candidates, of which 18 are new detections and 24 had been detected in the overlapping C5 by previous works. We used archival photometric and spectroscopic observations, as well as new high-spatial resolution images in order to carry out a complete analysis of the candidates found, including a homogeneous characterization of the host stars, transit modelling, search for transit timing variations and statistical validation. As a result, we report four new planets (K2-355 b, K2-356 b, K2-357 b, and K2-358 b) and 14 planet candidates. Besides, we refine the transit ephemeris of the previously published planets and candidates by modelling C5, C16 (when available) and C18 photometric data jointly, largely improving the period and mid-transit time precision. Regarding individual systems, we highlight the new planet K2-356 b and candidate EPIC 211537087.02 being near a 2:1 period commensurability, the detection of significant TTVs in the bright star K2-184 (V = 10.35), the location of K2-103 b inside the habitable zone according to optimistic models, the detection of a new single transit in the known system K2-274, and the disposition reassignment of K2-120 b, which we consider as a planet candidate as the origin of the signal cannot be ascertained.
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  • Lopes-Martínez, I., et al. (författare)
  • Problemas de codificación de productos que afectan la gestión deinventarios: Caso de estudio en empresas cubanas [Problems of code of products that affect the inventory management: Cuban companies case study]
  • 2014
  • Ingår i: Dyna. - : Universidad Nacional de Colombia. - 0012-7353 .- 2346-2183. ; 81:187, s. 64-72
  • Tidskriftsartikel (refereegranskat)abstract
    • Numerous code systems and classification of products and services exist globally, being tendency the standardization of them in the supply chains to achieve higher integration. The correct use of these systems is considered essential in the effectiveness in the inventory management, given its direct relationship with the registration of the primary information and tracing of the products. However, the scientific literature and the academic programs concentrate mostly on the Auto-ID technologies more than in the code structure and the consequences of an incorrect use of the code. The present article reflects the main deficiencies possible to detect in the systems of code of products, using a sample of companies in Cuba. The consequences of these deficiencies are discussed and it is also included a proposal of organization of the code for the Cuban companies. © The author; licensee Universidad Nacional de Colombia.
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