{"id":"https://openalex.org/A5078062017","orcid":"https://orcid.org/0000-0002-1814-4016","observed_orcids":["https://orcid.org/0000-0002-1814-4016"],"display_name":"Ahmad Cahyadi","raw_author_names":["A Cahyadi","A. Cahyadi","Ahmad Cahyadi","Cahyadi, Ahmad","Cahyadi, Ahmad Zainil"],"full_name":"Ahmad Zainil Cahyadi","works_count":278,"cited_by_count":1142,"summary_stats":{"2yr_mean_citedness":1.1578947368421053,"h_index":16,"i10_index":30},"ids":{"openalex":"https://openalex.org/A5078062017","orcid":"https://orcid.org/0000-0002-1814-4016","observed_orcids":["https://orcid.org/0000-0002-1814-4016"]},"affiliations":[{"institution":{"id":"https://openalex.org/I11855966","ror":"https://ror.org/056bjta22","display_name":"Diponegoro University","country_code":"ID","type":"education","lineage":["https://openalex.org/I11855966"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I165230279","ror":"https://ror.org/03ke6d638","display_name":"Universitas Gadjah Mada","country_code":"ID","type":"education","lineage":["https://openalex.org/I165230279"]},"years":[2026,2025,2024,2023,2022,2021,2020,2019,2018,2017,2015,2014,2013,2012]},{"institution":{"id":"https://openalex.org/I29617571","ror":"https://ror.org/0116zj450","display_name":"University of Indonesia","country_code":"ID","type":"education","lineage":["https://openalex.org/I29617571"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I3131389504","ror":"https://ror.org/03cnmz153","display_name":"Muhammadiyah University of Surakarta","country_code":"ID","type":"education","lineage":["https://openalex.org/I3131389504"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I35427347","ror":"https://ror.org/000pmrk50","display_name":"Islamic University of Indonesia","country_code":"ID","type":"education","lineage":["https://openalex.org/I35427347"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I4210150570","ror":"https://ror.org/03sxt1c89","display_name":"Ministry of Education and Culture","country_code":"ID","type":"government","lineage":["https://openalex.org/I4210150570"]},"years":[2017]}],"last_known_institutions":[{"id":"https://openalex.org/I165230279","ror":"https://ror.org/03ke6d638","display_name":"Universitas Gadjah Mada","country_code":"ID","type":"education","lineage":["https://openalex.org/I165230279"]}],"topics":[{"id":"https://openalex.org/T12083","display_name":"Karst Systems and Hydrogeology","count":145,"subfield":{"id":"https://openalex.org/subfields/1904","display_name":"Earth-Surface Processes"},"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/T12773","display_name":"Water Quality and Resources Studies","count":88,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"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/T10894","display_name":"Groundwater flow and contamination studies","count":46,"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/T11634","display_name":"Water Quality and Pollution Assessment","count":46,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"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/T12543","display_name":"Groundwater and Watershed Analysis","count":40,"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/T12083","display_name":"Karst Systems and Hydrogeology","value":0.0011512,"subfield":{"id":"https://openalex.org/subfields/1904","display_name":"Earth-Surface Processes"},"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/T12543","display_name":"Groundwater and Watershed Analysis","value":0.0004845,"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/T12456","display_name":"Geotourism and Geoheritage Conservation","value":0.0004088,"subfield":{"id":"https://openalex.org/subfields/1907","display_name":"Geology"},"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/T11926","display_name":"Subterranean biodiversity and taxonomy","value":0.0002548,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"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/T12773","display_name":"Water Quality and Resources Studies","value":0.0002023,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"182348080","wikidata":"https://www.wikidata.org/wiki/Q16817","display_name":"Karst","score":0.9861581921577454},{"id":"127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","score":0.8770612478256226},{"id":"76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","score":0.759984016418457},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.7448539137840271},{"id":"205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","score":0.7067660689353943}],"counts_by_year":[{"year":2012,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2013,"works_count":6,"oa_works_count":3,"cited_by_count":0},{"year":2014,"works_count":1,"oa_works_count":0,"cited_by_count":4},{"year":2015,"works_count":6,"oa_works_count":4,"cited_by_count":4},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2017,"works_count":146,"oa_works_count":146,"cited_by_count":112},{"year":2018,"works_count":23,"oa_works_count":22,"cited_by_count":23},{"year":2019,"works_count":23,"oa_works_count":21,"cited_by_count":58},{"year":2020,"works_count":16,"oa_works_count":14,"cited_by_count":82},{"year":2021,"works_count":13,"oa_works_count":10,"cited_by_count":162},{"year":2022,"works_count":9,"oa_works_count":8,"cited_by_count":157},{"year":2023,"works_count":13,"oa_works_count":10,"cited_by_count":168},{"year":2024,"works_count":8,"oa_works_count":6,"cited_by_count":152},{"year":2025,"works_count":6,"oa_works_count":6,"cited_by_count":118},{"year":2026,"works_count":5,"oa_works_count":5,"cited_by_count":100}],"display_name_alternatives":["A Cahyadi","A. Cahyadi","Ahmad Cahyadi","Cahyadi, Ahmad","Cahyadi, Ahmad Zainil"],"block_key":"a cahyadi","works_api_url":"https://api.openalex.org/works?filter=author.id:A5078062017","updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}