{"id":"https://openalex.org/A5113625363","orcid":null,"observed_orcids":[],"display_name":"Umpei Yamamoto","raw_author_names":["U. Yamamoto","Umpei Yamamoto","YAMAMOTO, UMPEI"],"full_name":"YAMAMOTO, UMPEI","works_count":17,"cited_by_count":524,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":8,"i10_index":7},"ids":{"openalex":"https://openalex.org/A5113625363","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I135598925","ror":"https://ror.org/00p4k0j84","display_name":"Kyushu University","country_code":"JP","type":"education","lineage":["https://openalex.org/I135598925"]},"years":[2020,2017]},{"institution":{"id":"https://openalex.org/I4210097767","ror":"https://ror.org/00ex2fc97","display_name":"Kyushu University Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I135598925","https://openalex.org/I4210097767"]},"years":[2020,2019,2017,2016]},{"institution":{"id":"https://openalex.org/I4210116584","ror":"https://ror.org/01pnpvk61","display_name":"Kyushu Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210116584","https://openalex.org/I4210132540"]},"years":[2011,2007]},{"institution":{"id":"https://openalex.org/I43777268","ror":"https://ror.org/058h74p94","display_name":"Nagasaki University","country_code":"JP","type":"education","lineage":["https://openalex.org/I43777268"]},"years":[2003]}],"last_known_institutions":[{"id":"https://openalex.org/I135598925","ror":"https://ror.org/00p4k0j84","display_name":"Kyushu University","country_code":"JP","type":"education","lineage":["https://openalex.org/I135598925"]},{"id":"https://openalex.org/I4210097767","ror":"https://ror.org/00ex2fc97","display_name":"Kyushu University Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I135598925","https://openalex.org/I4210097767"]}],"topics":[{"id":"https://openalex.org/T10234","display_name":"Obstructive Sleep Apnea Research","count":10,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10316","display_name":"Sleep and related disorders","count":7,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10852","display_name":"Temporomandibular Joint Disorders","count":4,"subfield":{"id":"https://openalex.org/subfields/3504","display_name":"Oral Surgery"},"field":{"id":"https://openalex.org/fields/35","display_name":"Dentistry"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10372","display_name":"Cardiac Imaging and Diagnostics","count":3,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10172","display_name":"Cardiac Valve Diseases and Treatments","count":2,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10234","display_name":"Obstructive Sleep Apnea Research","value":4.61e-05,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12833","display_name":"Bartonella species infections research","value":2.47e-05,"subfield":{"id":"https://openalex.org/subfields/2725","display_name":"Infectious Diseases"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10316","display_name":"Sleep and related disorders","value":2.12e-05,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10852","display_name":"Temporomandibular Joint Disorders","value":1.98e-05,"subfield":{"id":"https://openalex.org/subfields/3504","display_name":"Oral Surgery"},"field":{"id":"https://openalex.org/fields/35","display_name":"Dentistry"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T13381","display_name":"Heart rate and cardiovascular health","value":1.24e-05,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9757158160209656},{"id":"164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","score":0.8078798055648804},{"id":"2778198053","wikidata":"https://www.wikidata.org/wiki/Q181754","display_name":"Heart failure","score":0.7897845506668091},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.7845892906188965},{"id":"2776006263","wikidata":"https://www.wikidata.org/wiki/Q16606552","display_name":"Obstructive sleep apnea","score":0.763964056968689}],"counts_by_year":[{"year":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2007,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":1,"oa_works_count":1,"cited_by_count":33},{"year":2013,"works_count":1,"oa_works_count":1,"cited_by_count":23},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":25},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":35},{"year":2016,"works_count":2,"oa_works_count":1,"cited_by_count":22},{"year":2017,"works_count":1,"oa_works_count":0,"cited_by_count":36},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2019,"works_count":2,"oa_works_count":1,"cited_by_count":33},{"year":2020,"works_count":2,"oa_works_count":0,"cited_by_count":39},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":19},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":25},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":21}],"display_name_alternatives":["U. Yamamoto","Umpei Yamamoto","YAMAMOTO, UMPEI"],"block_key":"u yamamoto","works_api_url":"https://api.openalex.org/works?filter=author.id:A5113625363","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}