{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360306904389925504.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1063/5.0254473"}},{"identifier":{"@type":"URI","@value":"https://pubs.aip.org/aip/pop/article-pdf/doi/10.1063/5.0254473/20440008/032507_1_5.0254473.pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Inference of flow shear from reciprocating plasma potential measurements by means of Gaussian process regression"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Reliable estimation of equilibrium flow shear from reciprocating probe measurements is challenging since the quantity of interest corresponds to the second derivative of the observable plasma potential. In addition, a time series of the plasma potential obtained by plunging a probe is affected by both the probe head position and plasma fluctuations, complicating the estimation of equilibrium components and their errors. We tackle this problem by employing Gaussian process regression that is able to infer even the derivatives of a spatial or temporal profile in the form of a probability distribution function. The proposed inference framework is validated by using synthetic data generated by gyrofluid simulations. While the inference result based on a single plunge is unstable in certain spatial locations, we have obtained reasonable agreement between the inference result and the true flow shear profile by combining data sets taken from several plunges.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380306904389925508","@type":"Researcher","foaf:name":[{"@value":"T. Nishizawa"}],"jpcoar:affiliationName":[{"@value":"Research Institute for Applied Mechanics, Kyushu University 1 , Kasuga 816-8580,"},{"@value":"Research Center for Plasma Turbulence, Kyushu University 2 , Kasuga 816-8580,"}]},{"@id":"https://cir.nii.ac.jp/crid/1380306904389925376","@type":"Researcher","foaf:name":[{"@value":"P. Manz"}],"jpcoar:affiliationName":[{"@value":"Research Center for Plasma Turbulence, Kyushu University 2 , Kasuga 816-8580,"},{"@value":"Universität Greifswald 3 Felix-Hausdorff-Str. 6, 17489 Greifswald,"}]},{"@id":"https://cir.nii.ac.jp/crid/1380306904389925509","@type":"Researcher","foaf:name":[{"@value":"S. Tokuda"}],"jpcoar:affiliationName":[{"@value":"Institute of Mathematics for Industry, Kyushu University, Fukuoka 4 , Fukuoka 816-8580,"},{"@value":"Research Institute for Information Technology, Kyushu University 5 , Kasuga, Fukuoka 816-8580,"},{"@value":"Mathematics for Advanced Materials-OIL, AIST 6 , Sendai, Miyagi 980-8577,"}]},{"@id":"https://cir.nii.ac.jp/crid/1380306904389925506","@type":"Researcher","foaf:name":[{"@value":"G. Grenfell"}],"jpcoar:affiliationName":[{"@value":"Max-Planck-Institut für Plasmaphysik 7 , Boltzmannstr. 2, 85748 Garching,"}]},{"@id":"https://cir.nii.ac.jp/crid/1380306904389925507","@type":"Researcher","foaf:name":[{"@value":"M. Sasaki"}],"jpcoar:affiliationName":[{"@value":"College of Industrial Technology Nihon University 8 , Narashino 275-8575,"}]},{"@id":"https://cir.nii.ac.jp/crid/1380306904389925377","@type":"Researcher","foaf:name":[{"@value":"S. Inagaki"}],"jpcoar:affiliationName":[{"@value":"Institute of Advanced Energy, Kyoto University 9 , Uji, Kyoto 611-0011,"}]},{"@id":"https://cir.nii.ac.jp/crid/1380306904389925505","@type":"Researcher","foaf:name":[{"@value":"Y. Kawachi"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Engineering, Nagoya University 10 , Furo-cho, Chikusa-ku, Nagoya 464-8603,"}]},{"@id":"https://cir.nii.ac.jp/crid/1380306904389925504","@type":"Researcher","foaf:name":[{"@value":"A. Fujisawa"}],"jpcoar:affiliationName":[{"@value":"Research Institute for Applied Mechanics, Kyushu University 1 , Kasuga 816-8580,"},{"@value":"Research Center for Plasma Turbulence, Kyushu University 2 , Kasuga 816-8580,"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"1070664X"},{"@type":"EISSN","@value":"10897674"}],"prism:publicationName":[{"@value":"Physics of Plasmas"}],"dc:publisher":[{"@value":"AIP Publishing"}],"prism:publicationDate":"2025-03-01","prism:volume":"32","prism:number":"3"},"reviewed":"false","url":[{"@id":"https://pubs.aip.org/aip/pop/article-pdf/doi/10.1063/5.0254473/20440008/032507_1_5.0254473.pdf"}],"createdAt":"2025-03-14","modifiedAt":"2025-03-14","project":[{"@id":"https://cir.nii.ac.jp/crid/1040010457596955008","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"22H00120"},{"@type":"JGN","@value":"JP22H00120"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22H00120/"}],"notation":[{"@language":"ja","@value":"トモグラフィーによるトーラスプラズマ乱流場の大域観測とアイソトープ効果の解明"},{"@language":"en","@value":"Global measurements of turbulence field of torus plasma using tomography and clarification of isotope 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