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57,805 Research products, page 1 of 5,781

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  • 2012-2021
  • Doctoral thesis
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  • HAL - Université de Lille
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  • Publication . Doctoral thesis . 2013
    French
    Authors: 
    Sambou, Diomba;
    Publisher: HAL CCSD
    Country: France

    In this thesis we are interested to the study of spectral accumulation phenomena of some opeators coming from quantum physics, namely Schrödinger, Paul and Dirac operators. Typically, these operators appear in the modeling of some physical problems in the form of evolut...

  • French
    Authors: 
    Leblond, Timothée;
    Publisher: HAL CCSD
    Country: France

    In this manuscript, we present a shape optimization method based on CAD parameters such as lengths, angles, etc. We rely on gradient-based optimization techniques. The sensitivity of the objective function, with respect to the mesh nodes position, is provided by an adjo...

  • English
    Authors: 
    Jamil, Imad;
    Publisher: HAL CCSD
    Country: France

    Despite their remarkable success, the first widely spread versions of the Institute of Electrical and Electronics Engineers (IEEE) 802.11 Wireless Local Area Network (WLAN) standard, IEEE 802. 11 a/b/g, featured low spectral efficiencies that are becoming insufficient t...

  • French
    Authors: 
    Archelus, Anderson;
    Publisher: HAL CCSD
    Country: France

    IgA nephropathy is the most frequent glomerulonephritis worldwide. It features mesangial immunoglobulin (Ig)A deposits and proteinuria, hematuria and glomerular histological lesions. In 25% patients, it evolves, within 20 years, towards the end stage renal disease. Micr...

  • Publication . Doctoral thesis . 2020
    Open Access English
    Authors: 
    Sakho, M. (Momar);
    Publisher: HAL CCSD
    Country: France

    Hyperstreams are collections of streams with references. The hope is that structured data on a hyperstream can be monitored with lower latency than when communicated on a stream, since data on hyperstreams may be received in parallel rather than in a purely sequential m...

  • English
    Authors: 
    Halladjian, Sarkis;
    Publisher: HAL CCSD
    Country: France

    The human genome consists mainly of DNA, a macromolecule consisting of a long linear sequence of bases, tightly packed to fit in the relatively small nucleus. The packing gives rise to multiple hierarchical organizational levels. Recent research has shown that, along wi...

  • French
    Authors: 
    Ravel, Sylvain;
    Publisher: HAL CCSD
    Country: France

    This thesis is devoted to the unmixing issue in hyperspectral images, especiallyin presence of small sized objects. Hyperspectral images contains an importantamount of both spectral and spatial information. Each pixel of the image canbe assimilated to the reflection spe...

  • French
    Authors: 
    Samsel, Mathilde;
    Publisher: HAL CCSD
    Country: France

    Environmental changes of exceptional magnitude and intensity occurred during the Late Pleistocene and the Early Holocene in Western Europe. These- some eight millennia- have been divided into chronocultural periods based on typotechnological lithic industries, correspon...

  • French
    Authors: 
    Rouinsard, Alexandre;
    Publisher: HAL CCSD
    Country: France

    The micropropagation of variegated cultivars (several colors on the same leaf) can generate off-type plants to the original phenotype, particularly in the case of monocotyledonous plants. However, because of their highly ornamental character, these cultivars have a stro...

  • French
    Authors: 
    Torres-Rondon, Laura,;
    Publisher: HAL CCSD
    Country: France

    The main objective in this investigation is to construct a representative 3D numerical groundwater flow model of a local superficial aquifer in the Medium Camargue plain to simulate the actual hydrogeological and salt behavior. The 3D model will be used, in a second tim...