{"id":"https://openalex.org/W4281260013","doi":"https://doi.org/10.1109/jbhi.2022.3176432","title":"Estimation of Step Length With Wearable Thigh Sensor Using an Unscented Kalman Filter","display_name":"Estimation of Step Length With Wearable Thigh Sensor Using an Unscented Kalman Filter","publication_year":2022,"publication_date":"2022-05-20","ids":{"openalex":"https://openalex.org/W4281260013","doi":"https://doi.org/10.1109/jbhi.2022.3176432","pmid":"https://pubmed.ncbi.nlm.nih.gov/35594223"},"language":"en","primary_location":{"id":"doi:10.1109/jbhi.2022.3176432","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jbhi.2022.3176432","pdf_url":null,"source":{"id":"https://openalex.org/S2495854775","display_name":"IEEE Journal of Biomedical and Health Informatics","issn_l":"2168-2194","issn":["2168-2194","2168-2208"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Biomedical and Health Informatics","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5019039846","display_name":"Sanjay Chandrasekaran","orcid":"https://orcid.org/0000-0003-4031-3362"},"institutions":[{"id":"https://openalex.org/I122964287","display_name":"National Institute of Technology Tiruchirappalli","ror":"https://ror.org/047x65e68","country_code":"IN","type":"education","lineage":["https://openalex.org/I122964287"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Sanjay Chandrasekaran","raw_affiliation_strings":["Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, Tiruchirappalli, India"],"raw_orcid":"https://orcid.org/0000-0003-4031-3362","affiliations":[{"raw_affiliation_string":"Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, Tiruchirappalli, India","institution_ids":["https://openalex.org/I122964287"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110431379","display_name":"Markus L\u00fcken","orcid":null},"institutions":[{"id":"https://openalex.org/I887968799","display_name":"RWTH Aachen University","ror":"https://ror.org/04xfq0f34","country_code":"DE","type":"education","lineage":["https://openalex.org/I887968799"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Markus Luken","raw_affiliation_strings":["Department of Medical Information Technology, RWTH Aachen University, Aachen, Germany"],"raw_orcid":"https://orcid.org/0000-0002-2487-0962","affiliations":[{"raw_affiliation_string":"Department of Medical Information Technology, RWTH Aachen University, Aachen, Germany","institution_ids":["https://openalex.org/I887968799"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060021065","display_name":"Steffen Leonhardt","orcid":"https://orcid.org/0000-0002-6898-6887"},"institutions":[{"id":"https://openalex.org/I887968799","display_name":"RWTH Aachen University","ror":"https://ror.org/04xfq0f34","country_code":"DE","type":"education","lineage":["https://openalex.org/I887968799"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Steffen Leonhardt","raw_affiliation_strings":["Department of Medical Information Technology, RWTH Aachen University, Aachen, Germany"],"raw_orcid":"https://orcid.org/0000-0002-6898-6887","affiliations":[{"raw_affiliation_string":"Department of Medical Information Technology, RWTH Aachen University, Aachen, Germany","institution_ids":["https://openalex.org/I887968799"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5107988875","display_name":"Uma Gandhi","orcid":"https://orcid.org/0000-0003-0626-6304"},"institutions":[{"id":"https://openalex.org/I122964287","display_name":"National Institute of Technology Tiruchirappalli","ror":"https://ror.org/047x65e68","country_code":"IN","type":"education","lineage":["https://openalex.org/I122964287"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Uma Gandhi","raw_affiliation_strings":["Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, Tiruchirappalli, India"],"raw_orcid":"https://orcid.org/0000-0003-0626-6304","affiliations":[{"raw_affiliation_string":"Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, Tiruchirappalli, India","institution_ids":["https://openalex.org/I122964287"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002484401","display_name":"Thea Laurentius","orcid":"https://orcid.org/0000-0003-1335-2550"},"institutions":[{"id":"https://openalex.org/I4210120689","display_name":"Universit\u00e4tsklinikum Aachen","ror":"https://ror.org/02gm5zw39","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210120689"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Thea Laurentius","raw_affiliation_strings":["Chair for Geriatrics, University Hospital Aachen, Aachen, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chair for Geriatrics, University Hospital Aachen, Aachen, Germany","institution_ids":["https://openalex.org/I4210120689"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109389801","display_name":"Cornelius Bollheimer","orcid":null},"institutions":[{"id":"https://openalex.org/I4210120689","display_name":"Universit\u00e4tsklinikum Aachen","ror":"https://ror.org/02gm5zw39","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210120689"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Cornelius Bollheimer","raw_affiliation_strings":["Chair for Geriatrics, University Hospital Aachen, Aachen, Germany"],"raw_orcid":"https://orcid.org/0000-0003-3927-1716","affiliations":[{"raw_affiliation_string":"Chair for Geriatrics, University Hospital Aachen, Aachen, Germany","institution_ids":["https://openalex.org/I4210120689"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5063709217","display_name":"Chuong Ngo","orcid":"https://orcid.org/0000-0002-3961-2173"},"institutions":[{"id":"https://openalex.org/I4210120689","display_name":"Universit\u00e4tsklinikum Aachen","ror":"https://ror.org/02gm5zw39","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210120689"]},{"id":"https://openalex.org/I887968799","display_name":"RWTH Aachen University","ror":"https://ror.org/04xfq0f34","country_code":"DE","type":"education","lineage":["https://openalex.org/I887968799"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Chuong Ngo","raw_affiliation_strings":["Department of Medical Information Technology, RWTH Aachen University, Aachen, Germany","Chair for Geriatrics, University Hospital Aachen, Aachen, Germany"],"raw_orcid":"https://orcid.org/0000-0002-3961-2173","affiliations":[{"raw_affiliation_string":"Department of Medical Information Technology, RWTH Aachen University, Aachen, Germany","institution_ids":["https://openalex.org/I887968799"]},{"raw_affiliation_string":"Chair for Geriatrics, University Hospital Aachen, Aachen, Germany","institution_ids":["https://openalex.org/I4210120689"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.5234,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.83324318,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":"26","issue":"8","first_page":"3779","last_page":"3790"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10114","display_name":"Balance, Gait, and Falls Prevention","score":0.9983000159263611,"subfield":{"id":"https://openalex.org/subfields/3612","display_name":"Physical Therapy, Sports Therapy and Rehabilitation"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10114","display_name":"Balance, Gait, and Falls Prevention","score":0.9983000159263611,"subfield":{"id":"https://openalex.org/subfields/3612","display_name":"Physical Therapy, Sports Therapy and Rehabilitation"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9952999949455261,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.9878000020980835,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/kalman-filter","display_name":"Kalman filter","score":0.843681275844574},{"id":"https://openalex.org/keywords/covariance-intersection","display_name":"Covariance intersection","score":0.7526575922966003},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6550451517105103},{"id":"https://openalex.org/keywords/covariance","display_name":"Covariance","score":0.5902663469314575},{"id":"https://openalex.org/keywords/inertial-measurement-unit","display_name":"Inertial measurement unit","score":0.5522230267524719},{"id":"https://openalex.org/keywords/extended-kalman-filter","display_name":"Extended Kalman filter","score":0.5471873879432678},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5304122567176819},{"id":"https://openalex.org/keywords/covariance-matrix","display_name":"Covariance matrix","score":0.5042296648025513},{"id":"https://openalex.org/keywords/invariant-extended-kalman-filter","display_name":"Invariant extended Kalman filter","score":0.502547025680542},{"id":"https://openalex.org/keywords/gyroscope","display_name":"Gyroscope","score":0.4893335700035095},{"id":"https://openalex.org/keywords/fast-kalman-filter","display_name":"Fast Kalman filter","score":0.47529780864715576},{"id":"https://openalex.org/keywords/unscented-transform","display_name":"Unscented transform","score":0.4561121463775635},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.4395417869091034},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.42620450258255005},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4196600317955017},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.3913641571998596},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.22121134400367737},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.14357176423072815},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.10741204023361206}],"concepts":[{"id":"https://openalex.org/C157286648","wikidata":"https://www.wikidata.org/wiki/Q846780","display_name":"Kalman filter","level":2,"score":0.843681275844574},{"id":"https://openalex.org/C83042196","wikidata":"https://www.wikidata.org/wiki/Q5178898","display_name":"Covariance intersection","level":4,"score":0.7526575922966003},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6550451517105103},{"id":"https://openalex.org/C178650346","wikidata":"https://www.wikidata.org/wiki/Q201984","display_name":"Covariance","level":2,"score":0.5902663469314575},{"id":"https://openalex.org/C79061980","wikidata":"https://www.wikidata.org/wiki/Q941680","display_name":"Inertial measurement unit","level":2,"score":0.5522230267524719},{"id":"https://openalex.org/C206833254","wikidata":"https://www.wikidata.org/wiki/Q5421817","display_name":"Extended Kalman filter","level":3,"score":0.5471873879432678},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5304122567176819},{"id":"https://openalex.org/C185142706","wikidata":"https://www.wikidata.org/wiki/Q1134404","display_name":"Covariance matrix","level":2,"score":0.5042296648025513},{"id":"https://openalex.org/C8639503","wikidata":"https://www.wikidata.org/wiki/Q6059511","display_name":"Invariant extended Kalman filter","level":4,"score":0.502547025680542},{"id":"https://openalex.org/C158488048","wikidata":"https://www.wikidata.org/wiki/Q483400","display_name":"Gyroscope","level":2,"score":0.4893335700035095},{"id":"https://openalex.org/C150679823","wikidata":"https://www.wikidata.org/wiki/Q5436946","display_name":"Fast Kalman filter","level":4,"score":0.47529780864715576},{"id":"https://openalex.org/C139399703","wikidata":"https://www.wikidata.org/wiki/Q7897426","display_name":"Unscented transform","level":5,"score":0.4561121463775635},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4395417869091034},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.42620450258255005},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4196600317955017},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.3913641571998596},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.22121134400367737},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.14357176423072815},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.10741204023361206},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[{"descriptor_ui":"D000076251","descriptor_name":"Wearable Electronic Devices","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000076251","descriptor_name":"Wearable Electronic Devices","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000076251","descriptor_name":"Wearable Electronic Devices","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005684","descriptor_name":"Gait","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005684","descriptor_name":"Gait","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005684","descriptor_name":"Gait","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013848","descriptor_name":"Thigh","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D013848","descriptor_name":"Thigh","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D013848","descriptor_name":"Thigh","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":2,"locations":[{"id":"doi:10.1109/jbhi.2022.3176432","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jbhi.2022.3176432","pdf_url":null,"source":{"id":"https://openalex.org/S2495854775","display_name":"IEEE Journal of Biomedical and Health Informatics","issn_l":"2168-2194","issn":["2168-2194","2168-2208"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Biomedical and Health Informatics","raw_type":"journal-article"},{"id":"pmid:35594223","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/35594223","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE journal of biomedical and health informatics","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G4743957352","display_name":null,"funder_award_id":"32.5.1140.0009.0","funder_id":"https://openalex.org/F4320320869","funder_display_name":"Robert Bosch Stiftung"}],"funders":[{"id":"https://openalex.org/F4320320869","display_name":"Robert Bosch Stiftung","ror":"https://ror.org/012kqkf58"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":32,"referenced_works":["https://openalex.org/W169414593","https://openalex.org/W1981166740","https://openalex.org/W1989151421","https://openalex.org/W1991606916","https://openalex.org/W2019539135","https://openalex.org/W2044048366","https://openalex.org/W2066825169","https://openalex.org/W2099544223","https://openalex.org/W2105382574","https://openalex.org/W2111737705","https://openalex.org/W2116496166","https://openalex.org/W2118192112","https://openalex.org/W2122365325","https://openalex.org/W2132279149","https://openalex.org/W2134670564","https://openalex.org/W2162908184","https://openalex.org/W2313536508","https://openalex.org/W2412400097","https://openalex.org/W2413782574","https://openalex.org/W2467677331","https://openalex.org/W2520323573","https://openalex.org/W2527859191","https://openalex.org/W2586574952","https://openalex.org/W2766046425","https://openalex.org/W2783082511","https://openalex.org/W2790374560","https://openalex.org/W2887934623","https://openalex.org/W3022217189","https://openalex.org/W3101801952","https://openalex.org/W3108591736","https://openalex.org/W4205224112","https://openalex.org/W4245550013"],"related_works":["https://openalex.org/W3036780875","https://openalex.org/W2145874287","https://openalex.org/W2329531155","https://openalex.org/W3042105824","https://openalex.org/W4206024512","https://openalex.org/W2389104589","https://openalex.org/W2098630962","https://openalex.org/W2375707005","https://openalex.org/W2116558803","https://openalex.org/W2536041363"],"abstract_inverted_index":{"The":[0],"determination":[1],"of":[2,30,100,137],"step":[3,31,44,92],"length,":[4],"an":[5],"important":[6],"gait":[7],"parameter,":[8],"has":[9],"been":[10,21],"a":[11,38,55,64,71,76,108,151],"challenging":[12],"task.":[13],"Although":[14],"unobtrusive":[15],"sensors":[16],"(inertial":[17],"measurement":[18],"units)":[19],"have":[20],"developed":[22],"recently,":[23],"they":[24],"cannot":[25],"facilitate":[26],"the":[27,43,47,58,79,87,91,97,101,105,118,135,144],"automatic":[28],"estimation":[29,67,142],"length.":[32],"In":[33],"this":[34,148],"article,":[35],"we":[36],"use":[37],"model-based":[39],"technique":[40,73],"to":[41,104],"determine":[42],"length":[45,93],"using":[46,96,107,143],"Unscented":[48,88],"Kalman":[49,89],"Filter":[50],"with":[51,131],"angular":[52],"velocity":[53],"from":[54],"gyroscope":[56],"inside":[57],"thigh":[59],"pocket.":[60],"We":[61],"then":[62],"propose":[63],"novel":[65],"covariance":[66,141],"algorithm":[68],"based":[69],"on":[70],"screening":[72],"that":[74,122],"performs":[75],"search":[77],"for":[78,120,134,140],"optimal":[80],"Process":[81],"Noise":[82],"Covariance":[83],"matrix.":[84],"Upon":[85],"implementing":[86],"Filter,":[90],"is":[94],"found":[95],"horizontal":[98],"position":[99],"foot":[102],"relative":[103],"hip":[106],"patient-independent":[109],"robust":[110],"peak":[111],"detection":[112],"algorithm.":[113],"This":[114],"research":[115],"article":[116,149],"paves":[117],"way":[119],"algorithms":[121,139],"are":[123],"computationally":[124],"much":[125],"faster":[126],"than":[127],"black":[128],"box":[129],"methods,":[130],"more":[132],"scope":[133],"development":[136],"better":[138],"one":[145],"proposed":[146],"in":[147],"as":[150],"foundation.":[152]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
