@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix org: <http://www.w3.org/ns/org#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.nasa.gov/dataset/48bd2b3f-db1e-4ac4-bde9-4b7f83def081> a dcat:Dataset ;
    dct:description """Prognostics technologies determine the health state of a system and predict its remaining useful life. With this information, operators are able to make maintenance-related decisions, thus effectively streamlining operational and mission level activities. Experimentation on testbeds representative of\r
critical systems is very useful for the maturation of prognostics technology; precise emulation of actual fault conditions on such a testbed further validates these technologies. In this paper we\r
present the development of a pneumatic valve testbed, initial experimental results and progress towards the maturation and validation of component-level prognostic methods in the context\r
of cryogenic refueling operations. The pneumatic valve testbed allows for the injection of time-varying leaks with specified damage progression profiles in order to emulate common valve faults. The pneumatic valve testbed also contains a battery used to power some pneumatic components, enabling the study of the effects of battery degradation on the operation of the valves.""" ;
    dct:identifier "DASHLINK_948" ;
    dct:issued "2016-02-23"^^xsd:date ;
    dct:modified "2020-01-29"^^xsd:date ;
    dct:publisher <https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> ;
    dct:title "A Testbed for Implementing Prognostic Methodologies on Cryogenic Propellant Loading Systems" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Chetan Kulkarni" ;
            vcard:hasEmail <mailto:chetan.s.kulkarni@nasa.gov> ] ;
    dcat:distribution <https://data.nasa.gov/dataset/48bd2b3f-db1e-4ac4-bde9-4b7f83def081/resource/55df0fad-f870-4646-8c4e-49fbacc107fe> ;
    dcat:keyword "ames",
        "dashlink",
        "nasa" .

<https://data.nasa.gov/dataset/48bd2b3f-db1e-4ac4-bde9-4b7f83def081/resource/55df0fad-f870-4646-8c4e-49fbacc107fe> a dcat:Distribution ;
    dct:description "KulkarniEtAl-ValveTestbed-Autotestcon2014" ;
    dct:format "PDF" ;
    dct:identifier "55df0fad-f870-4646-8c4e-49fbacc107fe" ;
    dct:issued "2025-03-31T21:05:37.734055"^^xsd:dateTime ;
    dct:modified "2025-03-31T21:05:37.713579"^^xsd:dateTime ;
    dct:title "KulkarniEtAl-ValveTestbed-Autotestcon2014.pdf" ;
    dcat:accessURL <https://c3.nasa.gov/dashlink/static/media/publication/KulkarniEtAl-ValveTestbed-Autotestcon2014.pdf> ;
    dcat:mediaType "application/pdf" .

<https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> a org:Organization ;
    skos:prefLabel "NASA" ;
    foaf:name "NASA" .