{"id":"https://openalex.org/A5012812940","orcid":null,"observed_orcids":[],"display_name":"Katsuo Hasegawa","raw_author_names":["Hasegawa, Katsuo","KATSUO HASEGAWA","Katsuo Hasegawa","\u52dd\u7537 \u9577\u8c37\u5ddd"],"full_name":"Hasegawa, Katsuo","works_count":51,"cited_by_count":9,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":2,"i10_index":0},"ids":{"openalex":"https://openalex.org/A5012812940","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I4210117686","ror":"https://ror.org/02gmwvg31","display_name":"Japan Fisheries Research and Education Agency","country_code":"JP","type":"government","lineage":["https://openalex.org/I4210117686"]},"years":[2016]},{"institution":{"id":"https://openalex.org/I4405285150","ror":"https://ror.org/04vv3cn72","display_name":"Fisheries Agency","country_code":"JP","type":"government","lineage":["https://openalex.org/I4405285150"]},"years":[1999,1997,1996]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10117","display_name":"Advanced Combustion Engine Technologies","count":20,"subfield":{"id":"https://openalex.org/subfields/1507","display_name":"Fluid Flow and Transfer Processes"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13990","display_name":"Engine and Fuel Emissions","count":18,"subfield":{"id":"https://openalex.org/subfields/2203","display_name":"Automotive 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/T10507","display_name":"Biodiesel Production and Applications","count":15,"subfield":{"id":"https://openalex.org/subfields/2103","display_name":"Fuel Technology"},"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/T10230","display_name":"Marine and fisheries research","count":10,"subfield":{"id":"https://openalex.org/subfields/1104","display_name":"Aquatic Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12126","display_name":"Maritime Transport Emissions and Efficiency","count":10,"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"}}],"topic_share":[{"id":"https://openalex.org/T12126","display_name":"Maritime Transport Emissions and Efficiency","value":0.0001375,"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/T10507","display_name":"Biodiesel Production and Applications","value":0.0001001,"subfield":{"id":"https://openalex.org/subfields/2103","display_name":"Fuel Technology"},"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/T13691","display_name":"Energy, Environment, Agriculture Analysis","value":8.71e-05,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"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/T13990","display_name":"Engine and Fuel Emissions","value":7.89e-05,"subfield":{"id":"https://openalex.org/subfields/2203","display_name":"Automotive 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/T13858","display_name":"Technical Engine Diagnostics and Monitoring","value":6.94e-05,"subfield":{"id":"https://openalex.org/subfields/2203","display_name":"Automotive Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"138171918","wikidata":"https://www.wikidata.org/wiki/Q38423","display_name":"Diesel fuel","score":0.8008533716201782},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.7121617794036865},{"id":"2780804531","wikidata":"https://www.wikidata.org/wiki/Q174174","display_name":"Diesel engine","score":0.6772972941398621},{"id":"171146098","wikidata":"https://www.wikidata.org/wiki/Q124192","display_name":"Automotive engineering","score":0.6656292080879211},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.5019000172615051}],"counts_by_year":[{"year":1988,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1990,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1991,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1992,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1996,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1999,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2000,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2002,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2006,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2008,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2010,"works_count":3,"oa_works_count":3,"cited_by_count":0},{"year":2011,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2012,"works_count":2,"oa_works_count":2,"cited_by_count":1},{"year":2014,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2015,"works_count":1,"oa_works_count":1,"cited_by_count":1},{"year":2016,"works_count":2,"oa_works_count":2,"cited_by_count":1},{"year":2018,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2020,"works_count":2,"oa_works_count":1,"cited_by_count":1},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2023,"works_count":1,"oa_works_count":1,"cited_by_count":0}],"display_name_alternatives":["Hasegawa, Katsuo","KATSUO HASEGAWA","Katsuo Hasegawa","\u52dd\u7537 \u9577\u8c37\u5ddd"],"block_key":"k hasegawa","works_api_url":"https://api.openalex.org/works?filter=author.id:A5012812940","awards_count":0,"updated_date":"2026-11-06T12:48:51","created_date":"2016-06-24T00:00:00"}