Institut de Recherche de l’École navale (IRENAV): Recent submissions

Now showing items 127-133 of 271

    • On signal denoising by EMD in the frequency domain 
      Communication avec acte
      BAY-AHMED, Hadj-Ahmed; KOMATY, Ali; DARE-EMZIVAT, Delphine; ccBOUDRAA, Abdel-Ouahab (2015)
      In this work a new denoising scheme based on the empirical mode decomposition associated with a frequency analysis is introduced. Compared to classical approaches where the extracted modes are thresholded in time domain, ...
    • Exploring Geographical Crowd’s Emotions with Twitter 
      Article dans une revue avec comité de lecture
      WAKAMIYA, Shoko; BELOUAER, Lamia; ccBROSSET, David; KAWAI, Yukiko; ccCLARAMUNT, Christophe; SUMIYA, Kazutoshi (2015)
      The research introduced in this paper develops a semantic model whose objective is to analyze the geographical and emotion-based distribution of tweets at a large country scale. The approach extracts and categorizes tweets ...
    • Computational and experimental investigation of flow over a transient pitching hydrofoil 
      Article dans une revue avec comité de lecture
      DUCOIN, Antoine; ccASTOLFI, Jacques Andre; DENISET, François; SIGRIST, Jean-François (Elsevier, 2009)
      The present study is developed within the framework of marine structure design operating in transient regimes. It deals with an experimental and numerical investigation of the time–space distribution of the wall-pressure ...
    • Island Power Management using a Marine Current Turbine Farm and an Ocean Compressed Air Energy Storage System 
      Communication avec acte
      SHENG, Lei; ZHOU, Zhibin; CHARPENTIER, Jean-Frederic; BENBOUZID, Mohamed (EWTEC, 2015)
      Due to the high predictability and the high energy density, marine tidal resource has become an area of increasing interest with various academic and industrial projects around the world. In fact, several Marine Current ...
    • Estimation des paramètres d'un processus Symétrique Alpha Stable (S-alpha-Stable) à partir de ses modes empiriques 
      Communication avec acte
      KOMATY, Ali; ccBOUDRAA, Abdel-Ouahab; DARE-EMZIVAT, Delphine (2015)
      Dans ce travail nous nous intéressons au problème d’estimation des paramètres d’un processus alpha stable symétrique à partir de ses modes empiriques extraits par la décomposition modale empirique multivariée (MEMD). Nous ...
    • Effect of bubble’s arrangement on the viscous torque in bubbly Taylor- Couette flow 
      Article dans une revue avec comité de lecture
      NDONGO FOKOUA, Georges; GABILLET, Céline; AUBERT, Adrien; COLIN, Catherine (American Institute of Physics, 2015)
      An experimental investigation of the interactions between bubbles, coherent motion and viscous drag in a Taylor-Couette flow with the outer cylinder at rest is presented. The cylinder radii ratio η is 0.91. Bubbles are ...
    • Inductances and back-emf harmonics influence on the Torque/Speed characteristic of five-phase SPM machine 
      Communication avec acte
      ccSCUILLER, Franck; ccSEMAIL, Eric (IEEE, 2014)
      In this paper, the study of torque/speed characteristic for five-phase Surface-mounted Permanent Magnet (SPM) machine is carried out. With considering several hypothesis (linear magnetic modelling, only first and third ...