{"id":"https://openalex.org/A5086922249","orcid":null,"observed_orcids":[],"display_name":"Seiichi Takeda","raw_author_names":["S. Takeda","SEIICHI TAKEDA","Seiichi TAKEDA","Seiichi Takeda","Takeda, Seiichi"],"full_name":"Seiichi Takeda","works_count":57,"cited_by_count":132,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":5,"i10_index":4},"ids":{"openalex":"https://openalex.org/A5086922249","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I4210130911","ror":"https://ror.org/04e1a9m96","display_name":"Japan Weather Association (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210130911"]},"years":[2023]},{"institution":{"id":"https://openalex.org/I4405255641","ror":"https://ror.org/0387g1t09","display_name":"Japan Institute of Navigation","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4405255641"]},"years":[1997,1995,1994,1993,1992,1991,1990]},{"institution":{"id":"https://openalex.org/I48840829","ror":"https://ror.org/048nxq511","display_name":"Tokyo University of Marine Science and Technology","country_code":"JP","type":"education","lineage":["https://openalex.org/I48840829"]},"years":[2013,2011,2006,2005,2004,2003,2002,2001,1999,1991]},{"institution":{"id":"https://openalex.org/I65143321","ror":"https://ror.org/02exqgm79","display_name":"Hitachi (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I65143321"]},"years":[1978,1976,1975,1974,1973,1972]}],"last_known_institutions":[{"id":"https://openalex.org/I4210130911","ror":"https://ror.org/04e1a9m96","display_name":"Japan Weather Association (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210130911"]}],"topics":[{"id":"https://openalex.org/T11604","display_name":"Ship Hydrodynamics and Maneuverability","count":18,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10597","display_name":"Nuclear reactor physics and engineering","count":14,"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/T11061","display_name":"Ocean Waves and Remote Sensing","count":11,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11622","display_name":"Maritime Navigation and Safety","count":11,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12560","display_name":"Nuclear Engineering Thermal-Hydraulics","count":8,"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"}}],"topic_share":[{"id":"https://openalex.org/T11604","display_name":"Ship Hydrodynamics and Maneuverability","value":9.8e-05,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12126","display_name":"Maritime Transport Emissions and Efficiency","value":6.85e-05,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11622","display_name":"Maritime Navigation and Safety","value":6.53e-05,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14412","display_name":"Marine and Coastal Research","value":6.42e-05,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11061","display_name":"Ocean Waves and Remote Sensing","value":5.91e-05,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.6397832632064819},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.6086305975914001},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.5775807499885559},{"id":"86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","score":0.5153200030326843},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.49265557527542114}],"counts_by_year":[{"year":1972,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1973,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1974,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1975,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1976,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1978,"works_count":5,"oa_works_count":5,"cited_by_count":0},{"year":1982,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1987,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1989,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1991,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1992,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1993,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":1994,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1999,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":6,"oa_works_count":2,"cited_by_count":0},{"year":2006,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2008,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2013,"works_count":1,"oa_works_count":0,"cited_by_count":1},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":13},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":8},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2020,"works_count":1,"oa_works_count":0,"cited_by_count":3},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":9},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2023,"works_count":1,"oa_works_count":1,"cited_by_count":7},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":3}],"display_name_alternatives":["S. Takeda","SEIICHI TAKEDA","Seiichi TAKEDA","Seiichi Takeda","Takeda, Seiichi"],"block_key":"s takeda","works_api_url":"https://api.openalex.org/works?filter=author.id:A5086922249","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5086922249","updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}