{"id":"https://openalex.org/A5110134414","orcid":null,"observed_orcids":[],"display_name":"RS Ladd","raw_author_names":["RS Ladd"],"full_name":"RS Ladd","works_count":6,"cited_by_count":1637,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":5,"i10_index":5},"ids":{"openalex":"https://openalex.org/A5110134414","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I327656168","ror":"https://ror.org/01x994m09","display_name":"American Society For Testing and Materials","country_code":"US","type":"other","lineage":["https://openalex.org/I327656168"]},"years":[1978]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T11375","display_name":"Geotechnical Engineering and Soil Stabilization","count":6,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T10233","display_name":"Geotechnical Engineering and Soil Mechanics","count":5,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T13236","display_name":"Geotechnical and construction materials studies","count":3,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T10716","display_name":"Soil and Unsaturated Flow","count":1,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T11952","display_name":"Landfill Environmental Impact Studies","count":1,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Waste Management and Disposal"},"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/T11375","display_name":"Geotechnical Engineering and Soil Stabilization","value":1.66e-05,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T10233","display_name":"Geotechnical Engineering and Soil Mechanics","value":1.09e-05,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T13236","display_name":"Geotechnical and construction materials studies","value":8e-06,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T11952","display_name":"Landfill Environmental Impact Studies","value":7.8e-06,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Waste Management and Disposal"},"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/T12293","display_name":"Dam Engineering and Safety","value":6.7e-06,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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":"187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","score":0.7118794322013855},{"id":"127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","score":0.5354213118553162},{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.417843222618103},{"id":"159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","score":0.2443753480911255},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.13238570094108582}],"counts_by_year":[{"year":1978,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2009,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":40},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":40},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":44},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":43},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":53},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":58},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":90},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":83},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":132},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":111},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":125},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":108},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":160},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":140},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":116}],"display_name_alternatives":["RS Ladd"],"block_key":"r ladd","works_api_url":"https://api.openalex.org/works?filter=author.id:A5110134414","updated_date":"2026-11-03T12:34:24","created_date":"2016-06-24T00:00:00"}