{"id":"https://openalex.org/A5041980554","orcid":null,"observed_orcids":[],"display_name":"Heinz Ahrens","raw_author_names":["Ahrens, H.","Ahrens, Heinz","H. D. Ahrens","H.D. Ahrens","Heinz Ahrens"],"full_name":"Ahrens, Heinz","works_count":44,"cited_by_count":233,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":5,"i10_index":4},"ids":{"openalex":"https://openalex.org/A5041980554","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I62916508","ror":"https://ror.org/02kkvpp62","display_name":"Technical University of Munich","country_code":"DE","type":"education","lineage":["https://openalex.org/I62916508"]},"years":[1981]},{"institution":{"id":"https://openalex.org/I68956291","ror":"https://ror.org/05gqaka33","display_name":"Martin Luther University Halle-Wittenberg","country_code":"DE","type":"education","lineage":["https://openalex.org/I68956291"]},"years":[2021,2019,2018,2009,2006]}],"last_known_institutions":[{"id":"https://openalex.org/I68956291","ror":"https://ror.org/05gqaka33","display_name":"Martin Luther University Halle-Wittenberg","country_code":"DE","type":"education","lineage":["https://openalex.org/I68956291"]}],"topics":[{"id":"https://openalex.org/T11805","display_name":"Agricultural economics and policies","count":26,"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/T12033","display_name":"Agricultural Economics and Policy","count":21,"subfield":{"id":"https://openalex.org/subfields/1100","display_name":"General Agricultural and Biological Sciences"},"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/T13378","display_name":"Agricultural Development and Policies","count":11,"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/T12896","display_name":"Sustainable Agricultural Systems Analysis","count":6,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop 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/T13141","display_name":"Statistical Methods and Applications","count":5,"subfield":{"id":"https://openalex.org/subfields/2613","display_name":"Statistics and Probability"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T12033","display_name":"Agricultural Economics and Policy","value":0.0001125,"subfield":{"id":"https://openalex.org/subfields/1100","display_name":"General Agricultural and Biological Sciences"},"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/T13378","display_name":"Agricultural Development and Policies","value":8.3e-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/T13961","display_name":"Socioeconomics of Resources and Conservation","value":4.46e-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/T12896","display_name":"Sustainable Agricultural Systems Analysis","value":4.18e-05,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop 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/T13826","display_name":"Bangladesh Politics, Society, and Development","value":3.45e-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":0.6914716958999634},{"id":"118518473","wikidata":"https://www.wikidata.org/wiki/Q11451","display_name":"Agriculture","score":0.6838909387588501},{"id":"162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","score":0.5931370854377747},{"id":"205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","score":0.5459737181663513},{"id":"166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","score":0.19227129220962524}],"counts_by_year":[{"year":1965,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1967,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1968,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1974,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1976,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1978,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1980,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1984,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1987,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1990,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":4,"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":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2006,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2007,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2009,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":8},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2017,"works_count":4,"oa_works_count":4,"cited_by_count":3},{"year":2018,"works_count":4,"oa_works_count":3,"cited_by_count":3},{"year":2019,"works_count":1,"oa_works_count":0,"cited_by_count":2},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2021,"works_count":4,"oa_works_count":0,"cited_by_count":6},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":1}],"display_name_alternatives":["Ahrens, H.","Ahrens, Heinz","H. D. Ahrens","H.D. Ahrens","Heinz Ahrens"],"block_key":"h ahrens","works_api_url":"https://api.openalex.org/works?filter=author.id:A5041980554","awards_count":0,"updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}
