@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

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    dct:description """
              We are concerned with fast methods for the numerical implementation of the direct and inverse scattering problems for a perfectly conducting obstacle. The scattering problem is usually reduced to a single uniquely solvable modified combined-field integral equation (M-CFIE). For the numerical solution of the M-CFIE we propose a new high-order spectral algorithm by transporting this equation on the unit sphere via the Piola transform. The inverse problem is formulated as a nonlinear least squares problem for which the iteratively regularized Gauss-Newton method is applied to recover an approximate solution. Numerical experiments are presented in the special case of star-shaped obstacles.
            """ ;
    dct:identifier "hal-00780379" ;
    dct:issued "2026-05-14T23:11:39.443614"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-14T23:11:39.443619"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Fast spectral methods for the shape identification problem of a perfectly conducting obstacle" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00780379v1/resource/1d457632-679f-4c02-b8fc-6d694be70e85> ;
    dcat:keyword "boundary-integral-equation",
        "frechet-derivative",
        "infoeu-reposemanticspreprint",
        "mathmath-namathematics-mathnumerical-analysis-mathna",
        "maxwell-equations",
        "perfectly-conducting-interface",
        "preprints-working-papers-",
        "regularized-newton-method",
        "spectral-method" ;
    dcat:landingPage <https://hal.science/hal-00780379> .

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    dct:format "HTML" ;
    dct:issued "2026-05-14T23:11:39.446289"^^xsd:dateTime ;
    dct:modified "2026-05-14T23:11:39.414629"^^xsd:dateTime ;
    dct:title "Fast spectral methods for the shape identification problem of a perfectly conducting obstacle" ;
    dcat:accessURL <https://hal.science/hal-00780379> .

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    foaf:name "test_moissonnage_selune" .

<https://hal.science/hal-00780379> a foaf:Document .