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24,484 research outcomes, page 1 of 2,449
  • other research product . Annotation . Article . 2021
    Open Access
    Authors:
    Jean Carneiro; Diego Kasuo Nakata da Silva; LESLYE ESTEFANIA CASTRO ERAS; Nadson Welkson Pereira de Souza; André Felipe Souza Cruz; Emanoel Costa;

    Abstract The present work describes the use of a simulation model based on asymptotic methods (ray tracing) on the propagation of ultra-wideband radio signals in a densely-arborized urban channel. The model was previously validated and adjusted using data obtained from ...

  • other research product . Annotation . Article . 2021
    Open Access
    Authors:
    Ricardo de Araujo Elias; Carlos Alexandre Corrêa Wengerkievicz; Guilherme Hosoda Souza Reis; Nelson Sadowski; Nelson Jhoe Batistela; Joao Pedro Bastos;

    Abstract This paper addresses the influence of the primary and secondary resistances on the behavior of minor hysteresis loops when the electromagnetic device is fed by three-level PWM (pulse width modulation) voltage. To study the device transferring energy to a load, ...

  • other research product . Annotation . Article . 2021
    Open Access
    Authors:
    Alfredo Gomes Neto; Jefferson Silva; Ianes Barbosa Grécia Coutinho; Diego Fernandes; Laryssa Duarte; Amanda Gomes;

    Abstract A reconfigurable frequency selective surface, FSS, associating cross dipoles and matryoshka geometries is described in this paper. The proposed reconfigurable FSS uses as active element PIN diodes. With the associated geometries, three resonant frequencies are ...

  • other research product . Annotation . Article . 2021
    Open Access
    Authors:
    André Luiz Paganotti; RODNEY SALDANHA; Lisboa, A. C.; Marcio Matias Afonso; Marcilio Melo; Marco Aurélio de Oliveira Schroeder;

    Abstract In this paper, a new methodology is applied to optimize the geometry of conductors of overhead transmission lines (TL) with high precision and low computational cost. This methodology is based on the sensitivity analysis of the electrical charge of the transmis...

  • other research product . Annotation . Article . 2021
    Open Access
    Authors:
    Filomena Barbosa Rodrigues Mendes; Fredy Maglorio Sobrado Suárez; Nelson Jhoe Batistela; Jean Vianei Leite; Nelson Sadowski; Joao Pedro Bastos;

    Abstract In this work we propose a new method to separate iron losses by removing low frequency tests and reducing the number of experiments. The article deals with methodologies that use numerical methods to find the mathematical model coefficients of magnetic loss sep...

  • other research product . Annotation . 2021
    Open Access Spanish; Castilian
    Authors:
    Ríos Carratalá, Juan Antonio;
    Persistent Identifiers

    Análisis del sumario 1232 depositado en el Archivo General e Histórico de Defensa que condujo a la pena de muerte y el fusilamiento del periodista Augusto Vivero Rodríguez.

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  • other research product . Annotation . 2021
    Open Access Spanish; Castilian
    Authors:
    Ríos Carratalá, Juan Antonio;
    Persistent Identifiers

    Análisis del sumario 3828 depositado en el Archivo General e Histórico de Defensa, que se instruye a partir de una denuncia de Pablo Feal Sánchez por la incautación del local y los bienes de la Editorial Católica el 22 de julio de 1936.

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  • other research product . Annotation . 2021
    Open Access Spanish; Castilian
    Authors:
    Ríos Carratalá, Juan Antonio;
    Persistent Identifiers

    Análisis del sumario 27678 depositado en el Archivo General e Histórico de Defensa, donde se recoge la petición de indulto presentada en 1948 por el periodista y comediógrafo Eduardo Haro Delage, padre del también periodista Eduardo Haro Tecglen.

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  • other research product . Annotation . 2021
    Open Access lnl
    Authors:
    Althabégoïty, Galla;
    Publisher: Laboratoire Ligérien de Linguistique
  • other research product . Annotation . 2021
    Open Access Spanish; Castilian
    Authors:
    Ríos Carratalá, Juan Antonio;
    Persistent Identifiers

    Análisis del consejo de guerra sumarísimo de urgencia n.º 49328 seguido contra el periodista comunista Manuel Navarro Ballesteros, que fue fusilado el 1 de mayo de 1940 a consecuencia de la condena a muerte dictada en dicho proceso judicial.

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24,484 research outcomes, page 1 of 2,449