{"id":"https://openalex.org/W2000240115","doi":"https://doi.org/10.1080/18811248.2002.9715167","title":"Numerical Study on Observed Decay Ratio of Coupled Neutronic-Thermal Hydraulic Instability in Ringhals Unit 1 under Random Noise Excitation","display_name":"Numerical Study on Observed Decay Ratio of Coupled Neutronic-Thermal Hydraulic Instability in Ringhals Unit 1 under Random Noise Excitation","publication_year":2002,"publication_date":"2002-01-01","ids":{"openalex":"https://openalex.org/W2000240115","doi":"https://doi.org/10.1080/18811248.2002.9715167","mag":"2000240115"},"language":"en","primary_location":{"id":"doi:10.1080/18811248.2002.9715167","doi":"https://doi.org/10.1080/18811248.2002.9715167","is_oa":true,"landing_page_url":"https://doi.org/10.1080/18811248.2002.9715167","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/18811248.2002.9715167?needAccess=true","source":{"id":"https://openalex.org/S140210197","display_name":"Journal of Nuclear Science and Technology","issn_l":"0022-3131","issn":["0022-3131","1881-1248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Nuclear Science and Technology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.tandfonline.com/doi/pdf/10.1080/18811248.2002.9715167?needAccess=true","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5085607210","display_name":"Akitoshi Hotta","orcid":"https://orcid.org/0000-0001-9817-9202","observed_orcids":["https://orcid.org/0000-0001-9817-9202"]},"institutions":[{"id":"https://openalex.org/I119530710","display_name":"TEPCO (Japan)","ror":"https://ror.org/01sgzrz83","country_code":"JP","type":"company","lineage":["https://openalex.org/I119530710"]},{"id":"https://openalex.org/I4405264582","display_name":"Tepco SYSTEMS Corporation (Japan)","ror":"https://ror.org/02bkv2b25","country_code":"JP","type":"company","lineage":["https://openalex.org/I4405264582"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akitoshi HOTTA","raw_affiliation_strings":["In-Core Fuel Management Department, TEPCO Systems Corporation, Shinbashi, Minato-ku, Tokyo, 105-0004"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"In-Core Fuel Management Department, TEPCO Systems Corporation, Shinbashi, Minato-ku, Tokyo, 105-0004","institution_ids":["https://openalex.org/I119530710","https://openalex.org/I4405264582"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5073581451","display_name":"Hisashi Ninokata","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I114531698","display_name":"Tokyo Institute of Technology","ror":"https://ror.org/0112mx960","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698","https://openalex.org/I4400009020"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hisashi NINOKATA","raw_affiliation_strings":["Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550","institution_ids":["https://openalex.org/I114531698"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":4.7931,"has_fulltext":true,"cited_by_count":15,"citation_normalized_percentile":{"value":0.93339768,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":87,"max":95},"biblio":{"volume":"39","issue":"2","first_page":"138","last_page":"149"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12560","display_name":"Nuclear Engineering Thermal-Hydraulics","score":0.6718999743461609,"subfield":{"id":"https://openalex.org/subfields/2104","display_name":"Nuclear Energy and Engineering"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12560","display_name":"Nuclear Engineering Thermal-Hydraulics","score":0.6718999743461609,"subfield":{"id":"https://openalex.org/subfields/2104","display_name":"Nuclear Energy and Engineering"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10597","display_name":"Nuclear reactor physics and engineering","score":0.32010000944137573,"subfield":{"id":"https://openalex.org/subfields/2104","display_name":"Nuclear Energy and Engineering"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11242","display_name":"Nuclear Materials and Properties","score":0.0007999999797903001,"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/decay-ratio","display_name":"decay ratio","score":0.7639999985694885},{"id":"https://openalex.org/keywords/random-noise-excitation","display_name":"random noise excitation","score":0.878000020980835},{"id":"https://openalex.org/keywords/core-stability","display_name":"core stability","score":0.4790000021457672},{"id":"https://openalex.org/keywords/stability-monitoring","display_name":"stability monitoring","score":0.5519999861717224},{"id":"https://openalex.org/keywords/fundamental-mode","display_name":"fundamental mode","score":0.5879999995231628},{"id":"https://openalex.org/keywords/response-analysis","display_name":"response analysis","score":0.32899999618530273}],"concepts":[{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.6360149383544922},{"id":"https://openalex.org/C180205008","wikidata":"https://www.wikidata.org/wiki/Q159190","display_name":"Amplitude","level":2,"score":0.512923002243042},{"id":"https://openalex.org/C112633086","wikidata":"https://www.wikidata.org/wiki/Q381287","display_name":"White noise","level":2,"score":0.5054755210876465},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.4789074659347534},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.46730777621269226},{"id":"https://openalex.org/C207821765","wikidata":"https://www.wikidata.org/wiki/Q405372","display_name":"Instability","level":2,"score":0.461657851934433},{"id":"https://openalex.org/C30475298","wikidata":"https://www.wikidata.org/wiki/Q909554","display_name":"Computational physics","level":1,"score":0.34769219160079956},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.31271183490753174},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.12855470180511475},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.12648063898086548},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.10649791359901428},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1080/18811248.2002.9715167","doi":"https://doi.org/10.1080/18811248.2002.9715167","is_oa":true,"landing_page_url":"https://doi.org/10.1080/18811248.2002.9715167","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/18811248.2002.9715167?needAccess=true","source":{"id":"https://openalex.org/S140210197","display_name":"Journal of Nuclear Science and Technology","issn_l":"0022-3131","issn":["0022-3131","1881-1248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Nuclear Science and Technology","raw_type":"journal-article"},{"id":"doi:10.3327/jnst.39.138","doi":"https://doi.org/10.3327/jnst.39.138","is_oa":true,"landing_page_url":"https://doi.org/10.3327/jnst.39.138","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/18811248.2002.9715167?download=true","source":{"id":"https://openalex.org/S140210197","display_name":"Journal of Nuclear Science and Technology","issn_l":"0022-3131","issn":["0022-3131","1881-1248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Nuclear Science and Technology","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1080/18811248.2002.9715167","doi":"https://doi.org/10.1080/18811248.2002.9715167","is_oa":true,"landing_page_url":"https://doi.org/10.1080/18811248.2002.9715167","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/18811248.2002.9715167?needAccess=true","source":{"id":"https://openalex.org/S140210197","display_name":"Journal of Nuclear Science and Technology","issn_l":"0022-3131","issn":["0022-3131","1881-1248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Nuclear Science and Technology","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320313220","display_name":"Kindai University","ror":"https://ror.org/05kt9ap64"},{"id":"https://openalex.org/F4320321012","display_name":"Technische Universiteit Delft","ror":"https://ror.org/02e2c7k09"},{"id":"https://openalex.org/F4320321523","display_name":"Chalmers Tekniska H\u00f6gskola","ror":"https://ror.org/040wg7k59"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2000240115.pdf","grobid_xml":"https://content.openalex.org/works/W2000240115.grobid-xml"},"referenced_works_count":18,"referenced_works":["https://openalex.org/W43360841","https://openalex.org/W95521550","https://openalex.org/W144737796","https://openalex.org/W202880244","https://openalex.org/W1496923911","https://openalex.org/W1540723801","https://openalex.org/W1595914421","https://openalex.org/W1969356368","https://openalex.org/W2004239313","https://openalex.org/W2021896664","https://openalex.org/W2043545122","https://openalex.org/W2044548488","https://openalex.org/W2056633062","https://openalex.org/W2071557078","https://openalex.org/W2090104063","https://openalex.org/W2241556975","https://openalex.org/W2332062255","https://openalex.org/W2622162431"],"related_works":["https://openalex.org/W2073501963","https://openalex.org/W144737796","https://openalex.org/W2743172735","https://openalex.org/W3157967451","https://openalex.org/W1595914421","https://openalex.org/W2056633062","https://openalex.org/W2074331935","https://openalex.org/W206220228","https://openalex.org/W1603957995","https://openalex.org/W2005778248"],"abstract_inverted_index":{"The":[0,69],"core":[1],"stability":[2,70],"in":[3,22,188,196],"the":[4,11,45,58,78,88,97,116,119,127,133,143,156,163,173,190],"Ringhals":[5],"Unit":[6],"1":[7],"was":[8,55,73,94,147,177],"estimated":[9],"under":[10,142],"numerical":[12,65,183],"random":[13,80],"noise":[14,20,26,82,184],"that":[15,96,149,179],"simulates":[16],"indefinable":[17],"two-phase":[18],"flow":[19],"sources":[21],"actual":[23,197],"cores.":[24],"This":[25],"model":[27],"is":[28,152,186],"expressed":[29],"as":[30,122],"a":[31,51,64,112,139,169],"product":[32],"of":[33,159,172,182],"band":[34],"white":[35],"amplitude":[36],"and":[37,84],"arbitrary":[38],"shape":[39],"functions.":[40],"In":[41],"evaluating":[42],"decay":[43,100,129],"ratios,":[44],"conventional":[46],"free-decaying":[47],"method":[48,61],"based":[49,62,102,131],"on":[50,63,103,132],"clean":[52],"modal":[53,135],"disturbance":[54,83],"replaced":[56],"with":[57,168],"response":[59,136],"analysis":[60,185],"moderator":[66,89,160],"density":[67,90,161],"noise.":[68],"monitoring":[71,191],"procedure":[72],"reproduced":[74],"numerically":[75],"by":[76,85,108,124,155],"giving":[77],"spatially":[79],"shaped":[81],"linearly":[86],"varying":[87],"reactivity":[91],"multiplier.":[92],"It":[93,146,176],"confirmed":[95],"observed":[98],"regional":[99,128],"ratio":[101,130],"differential":[104],"LPRM":[105],"signals":[106],"proposed":[107],"Hagen":[109],"sometimes":[110],"shows":[111],"discontinuous":[113],"jump":[114],"from":[115],"stable":[117],"to":[118],"unstable":[120],"region":[121],"predicted":[123],"Pazsit.":[125],"Nevertheless,":[126],"extracted":[134],"will":[137],"show":[138],"continuous":[140],"change":[141],"same":[144],"condition.":[145],"clarified":[148],"this":[150,180],"jumping":[151],"mainly":[153],"induced":[154],"local":[157],"fluctuation":[158],"at":[162],"frequency":[164],"range":[165,171],"which":[166],"overlaps":[167],"predominance":[170],"fundamental":[174],"mode.":[175],"demonstrated":[178],"kind":[181],"useful":[187],"verifying":[189],"algorithm":[192],"before":[193],"applying":[194],"it":[195],"plants.":[198]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}