{"id":"https://openalex.org/A5035112042","orcid":null,"observed_orcids":[],"display_name":"Yasuhiro Izumikawa","raw_author_names":["Y. Izumikawa","Yasuhiro Izumikawa"],"full_name":"Yasuhiro Izumikawa","works_count":22,"cited_by_count":275,"summary_stats":{"2yr_mean_citedness":6.0,"h_index":6,"i10_index":4},"ids":{"openalex":"https://openalex.org/A5035112042","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I131231118","ror":"https://ror.org/002rw7y37","display_name":"Aoyama Gakuin University","country_code":"JP","type":"education","lineage":["https://openalex.org/I131231118"]},"years":[2025,2023]},{"institution":{"id":"https://openalex.org/I195152964","ror":"https://ror.org/05e8ahe21","display_name":"Miyazaki International College","country_code":"JP","type":"education","lineage":["https://openalex.org/I195152964"]},"years":[2004,2003,2002]},{"institution":{"id":"https://openalex.org/I87099769","ror":"https://ror.org/014phfv49","display_name":"Kobe College","country_code":"JP","type":"education","lineage":["https://openalex.org/I87099769"]},"years":[2008,2006]},{"institution":{"id":"https://openalex.org/I96679780","ror":"https://ror.org/03qvqb743","display_name":"Chuo University","country_code":"JP","type":"education","lineage":["https://openalex.org/I96679780"]},"years":[2020,2018,2014,2013,2010]}],"last_known_institutions":[{"id":"https://openalex.org/I131231118","ror":"https://ror.org/002rw7y37","display_name":"Aoyama Gakuin University","country_code":"JP","type":"education","lineage":["https://openalex.org/I131231118"]}],"topics":[{"id":"https://openalex.org/T10053","display_name":"International Relations and Foreign Policy","count":22,"subfield":{"id":"https://openalex.org/subfields/3320","display_name":"Political Science and International Relations"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13337","display_name":"Korean Peninsula Historical and Political Studies","count":8,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11198","display_name":"Japanese History and Culture","count":7,"subfield":{"id":"https://openalex.org/subfields/3316","display_name":"Cultural Studies"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13993","display_name":"Historical Geopolitical and Social Dynamics","count":6,"subfield":{"id":"https://openalex.org/subfields/3320","display_name":"Political Science and International Relations"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12825","display_name":"Defense, Military, and Policy Studies","count":5,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"topic_share":[{"id":"https://openalex.org/T13007","display_name":"Economic Sanctions and International Relations","value":5.18e-05,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13993","display_name":"Historical Geopolitical and Social Dynamics","value":4.15e-05,"subfield":{"id":"https://openalex.org/subfields/3320","display_name":"Political Science and International Relations"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13337","display_name":"Korean Peninsula Historical and Political Studies","value":2.82e-05,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10053","display_name":"International Relations and Foreign Policy","value":2.11e-05,"subfield":{"id":"https://openalex.org/subfields/3320","display_name":"Political Science and International Relations"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T14349","display_name":"Global Political and Economic Relations","value":2.11e-05,"subfield":{"id":"https://openalex.org/subfields/3320","display_name":"Political Science and International Relations"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"x_concepts":[{"id":"17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","score":0.7702000141143799},{"id":"94625758","wikidata":"https://www.wikidata.org/wiki/Q7163","display_name":"Politics","score":0.6559509038925171},{"id":"162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","score":0.603005051612854},{"id":"138921699","wikidata":"https://www.wikidata.org/wiki/Q47555","display_name":"Political economy","score":0.49552857875823975},{"id":"199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","score":0.35014206171035767}],"counts_by_year":[{"year":2002,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":0,"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":2012,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2013,"works_count":2,"oa_works_count":1,"cited_by_count":6},{"year":2014,"works_count":1,"oa_works_count":0,"cited_by_count":8},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2017,"works_count":1,"oa_works_count":0,"cited_by_count":5},{"year":2018,"works_count":2,"oa_works_count":0,"cited_by_count":14},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2020,"works_count":1,"oa_works_count":0,"cited_by_count":19},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":8},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":17},{"year":2023,"works_count":1,"oa_works_count":1,"cited_by_count":26},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":40},{"year":2025,"works_count":1,"oa_works_count":1,"cited_by_count":55},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":45}],"display_name_alternatives":["Y. Izumikawa","Yasuhiro Izumikawa"],"block_key":"y izumikawa","works_api_url":"https://api.openalex.org/works?filter=author.id:A5035112042","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}