Exploració per autor "Pérez, Jorge"

Ara es mostren els items 2-8 de 8

    • Compressive strength estimation of sprayed concrete at early ages 

      Galobardes Reyes, Isaac; Domingues de Figueiredo, Antonio; Pialarissi Cavalaro, Sergio Henrique; García Vicente, Tomàs; Rueda, Angel; Pérez, Jorge (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The sprayed concrete complies a construction technique that combines the placement and the compacting of concrete in only one process. This sort of concrete, which is widely used in underground constructions, requires a ...

    • Early age hydration of cement pastes with alkaline and alkali-free accelerators for sprayed concrete 

      Pícolo Salvador, Renan; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Domingues de Figueiredo, Antonio; Pérez, Jorge (2016-05)
      Article
      Accés obert
      The objective of this study is to evaluate the early age hydration mechanisms of accelerated CEM I pastes. Liquid phase analysis, conductimetry, isothermal calorimetry, in situ XRD and SEM were performed on cement pastes ...

    • Hinf current controller for input admittance shaping of VSC-based grid applications 

      Pérez, Jorge; Cóbreces Álvarez, Santiago; Griñó Cubero, Robert; Rodriguez Sanchez, Francisco Javier (2017-04-01)
      Article
      Accés obert
      This paper presents a current controller that shapes, in the frequency domain, the input admittance of voltage-source converters connected to the grid. The controller is obtained by means of a H8 synthesis procedure, which ...

    • Hinf simultaneous admittance and tracking current controller of three-phase active grid front-ends 

      Pérez, Jorge; Cóbreces Álvarez, Santiago; Rodriguez Sanchez, Francisco Javier; Griñó Cubero, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper proposes an H8 current controller that allows power converter input admittance shaping, both in modulus and in phase, in a three phase voltage source converter to grid connection through an L filter. In addition to ...

    • Incremental mapping compilation in an object-to-relational mapping system 

      Bernstein, Philip A.; Jacob, Marie; Pérez, Jorge; Rull Fort, Guillem; Terwilliger, James F. (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In an object-to-relational mapping system (ORM), mapping expressions explain how to expose relational data as objects and how to store objects in tables. If mappings are sufficiently expressive, then it is possible to ...

    • Technoeconomic evaluation of cooperative relaying transmission techniques in OFDM cellular networks 

      Moral, Antolín; Vidal Manzano, José; Pérez, Jorge; Agustín de Dios, Adrián; Marina, Ninoslav; Host-Madsen, Anders (HINDAWI, 2011-02-27)
      Article
      Accés restringit per política de l'editorial
      We evaluate the costs in the deployment of a 4G relay-assisted network in the 2.6GHz band following a technoeconomic methodology that departs fromcell dimensioning based on spectral efficiency and outage capacity requirements. ...

    • Tecnologías para el desarrollo y la educación del ingeniero 

      Cervera, Jaime; Pérez Foguet, Agustí; Mataix, Carlos; Romero, Ana; Pérez Arriaga, José Ignacio; Pérez, Jorge (Real Academia de Ingeniería, 2011-11-01)
      Capítol de llibre
      Accés obert