{"id":"https://openalex.org/W2094924289","doi":"https://doi.org/10.1155/2015/452078","title":"Optimization of an Accelerometer and Gyroscope-Based Fall Detection Algorithm","display_name":"Optimization of an Accelerometer and Gyroscope-Based Fall Detection Algorithm","publication_year":2015,"publication_date":"2015-01-01","ids":{"openalex":"https://openalex.org/W2094924289","doi":"https://doi.org/10.1155/2015/452078","mag":"2094924289"},"language":"en","primary_location":{"id":"doi:10.1155/2015/452078","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2015/452078","pdf_url":"https://downloads.hindawi.com/journals/js/2015/452078.pdf","source":{"id":"https://openalex.org/S96783963","display_name":"Journal of Sensors","issn_l":"1687-725X","issn":["1687-725X","1687-7268"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://downloads.hindawi.com/journals/js/2015/452078.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5056531404","display_name":"Quoc Thien Huynh","orcid":"https://orcid.org/0000-0002-1426-3333"},"institutions":[{"id":"https://openalex.org/I84470341","display_name":"Catholic University of America","ror":"https://ror.org/047yk3s18","country_code":"US","type":"education","lineage":["https://openalex.org/I84470341"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Quoc T. Huynh","raw_affiliation_strings":["Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA","institution_ids":["https://openalex.org/I84470341"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019124024","display_name":"Uyen D. Nguyen","orcid":null},"institutions":[{"id":"https://openalex.org/I123565023","display_name":"Vietnam National University Ho Chi Minh City","ror":"https://ror.org/00waaqh38","country_code":"VN","type":"education","lineage":["https://openalex.org/I123565023"]}],"countries":["VN"],"is_corresponding":false,"raw_author_name":"Uyen D. Nguyen","raw_affiliation_strings":["School of Electrical Engineering, International University, Vietnam National University, Ho Chi Minh City 70000, Vietnam"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, International University, Vietnam National University, Ho Chi Minh City 70000, Vietnam","institution_ids":["https://openalex.org/I123565023"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002092602","display_name":"Lucia B. Irazabal","orcid":null},"institutions":[{"id":"https://openalex.org/I84470341","display_name":"Catholic University of America","ror":"https://ror.org/047yk3s18","country_code":"US","type":"education","lineage":["https://openalex.org/I84470341"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Lucia B. Irazabal","raw_affiliation_strings":["Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA","institution_ids":["https://openalex.org/I84470341"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029553061","display_name":"Nazanin Ghassemian","orcid":null},"institutions":[{"id":"https://openalex.org/I84470341","display_name":"Catholic University of America","ror":"https://ror.org/047yk3s18","country_code":"US","type":"education","lineage":["https://openalex.org/I84470341"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Nazanin Ghassemian","raw_affiliation_strings":["Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA","institution_ids":["https://openalex.org/I84470341"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5082795829","display_name":"Tr\u1ea7n Quang B\u00ecnh","orcid":"https://orcid.org/0000-0003-3520-2131"},"institutions":[{"id":"https://openalex.org/I84470341","display_name":"Catholic University of America","ror":"https://ror.org/047yk3s18","country_code":"US","type":"education","lineage":["https://openalex.org/I84470341"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Binh Q. Tran","raw_affiliation_strings":["Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Biomedical Engineering, School of Engineering, The Catholic University of America, Washington, DC 20064, USA","institution_ids":["https://openalex.org/I84470341"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5082795829"],"corresponding_institution_ids":["https://openalex.org/I84470341"],"apc_list":{"value":2100,"currency":"USD","value_usd":2100},"apc_paid":{"value":2100,"currency":"USD","value_usd":2100},"fwci":6.3654,"has_fulltext":true,"cited_by_count":136,"citation_normalized_percentile":{"value":0.97664801,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":100},"biblio":{"volume":"2015","issue":null,"first_page":"1","last_page":"8"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.9987999796867371,"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"}},"topics":[{"id":"https://openalex.org/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.9987999796867371,"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"}},{"id":"https://openalex.org/T10114","display_name":"Balance, Gait, and Falls Prevention","score":0.9973000288009644,"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":0.9886999726295471,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/accelerometer","display_name":"Accelerometer","score":0.9336074590682983},{"id":"https://openalex.org/keywords/gyroscope","display_name":"Gyroscope","score":0.8273613452911377},{"id":"https://openalex.org/keywords/acceleration","display_name":"Acceleration","score":0.6478684544563293},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6289666295051575},{"id":"https://openalex.org/keywords/sensitivity","display_name":"Sensitivity (control systems)","score":0.627571702003479},{"id":"https://openalex.org/keywords/falling","display_name":"Falling (accident)","score":0.6047502160072327},{"id":"https://openalex.org/keywords/wearable-computer","display_name":"Wearable computer","score":0.5735200047492981},{"id":"https://openalex.org/keywords/step-detection","display_name":"Step detection","score":0.533892810344696},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.47787633538246155},{"id":"https://openalex.org/keywords/physical-medicine-and-rehabilitation","display_name":"Physical medicine and rehabilitation","score":0.42842280864715576},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4180459678173065},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.40154823660850525},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3200313448905945},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.2572140693664551},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.24353349208831787},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.24227795004844666},{"id":"https://openalex.org/keywords/embedded-system","display_name":"Embedded system","score":0.08690550923347473},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.0730481743812561}],"concepts":[{"id":"https://openalex.org/C89805583","wikidata":"https://www.wikidata.org/wiki/Q192940","display_name":"Accelerometer","level":2,"score":0.9336074590682983},{"id":"https://openalex.org/C158488048","wikidata":"https://www.wikidata.org/wiki/Q483400","display_name":"Gyroscope","level":2,"score":0.8273613452911377},{"id":"https://openalex.org/C117896860","wikidata":"https://www.wikidata.org/wiki/Q11376","display_name":"Acceleration","level":2,"score":0.6478684544563293},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6289666295051575},{"id":"https://openalex.org/C21200559","wikidata":"https://www.wikidata.org/wiki/Q7451068","display_name":"Sensitivity (control systems)","level":2,"score":0.627571702003479},{"id":"https://openalex.org/C2779079380","wikidata":"https://www.wikidata.org/wiki/Q333495","display_name":"Falling (accident)","level":2,"score":0.6047502160072327},{"id":"https://openalex.org/C150594956","wikidata":"https://www.wikidata.org/wiki/Q1334829","display_name":"Wearable computer","level":2,"score":0.5735200047492981},{"id":"https://openalex.org/C293773","wikidata":"https://www.wikidata.org/wiki/Q7608015","display_name":"Step detection","level":3,"score":0.533892810344696},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.47787633538246155},{"id":"https://openalex.org/C99508421","wikidata":"https://www.wikidata.org/wiki/Q2678675","display_name":"Physical medicine and rehabilitation","level":1,"score":0.42842280864715576},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4180459678173065},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.40154823660850525},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3200313448905945},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2572140693664551},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.24353349208831787},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.24227795004844666},{"id":"https://openalex.org/C149635348","wikidata":"https://www.wikidata.org/wiki/Q193040","display_name":"Embedded system","level":1,"score":0.08690550923347473},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0730481743812561},{"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/C99454951","wikidata":"https://www.wikidata.org/wiki/Q932068","display_name":"Environmental health","level":1,"score":0.0},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1155/2015/452078","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2015/452078","pdf_url":"https://downloads.hindawi.com/journals/js/2015/452078.pdf","source":{"id":"https://openalex.org/S96783963","display_name":"Journal of Sensors","issn_l":"1687-725X","issn":["1687-725X","1687-7268"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Sensors","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:4c2ea8a959a3404c8a435ec73936f357","is_oa":true,"landing_page_url":"https://doaj.org/article/4c2ea8a959a3404c8a435ec73936f357","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Journal of Sensors, Vol 2015 (2015)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1155/2015/452078","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2015/452078","pdf_url":"https://downloads.hindawi.com/journals/js/2015/452078.pdf","source":{"id":"https://openalex.org/S96783963","display_name":"Journal of Sensors","issn_l":"1687-725X","issn":["1687-725X","1687-7268"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Sensors","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being","score":0.5799999833106995}],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2094924289.pdf","grobid_xml":"https://content.openalex.org/works/W2094924289.grobid-xml"},"referenced_works_count":20,"referenced_works":["https://openalex.org/W179028102","https://openalex.org/W1606743178","https://openalex.org/W2000489904","https://openalex.org/W2041066826","https://openalex.org/W2077252476","https://openalex.org/W2080326930","https://openalex.org/W2081114569","https://openalex.org/W2082893943","https://openalex.org/W2085052708","https://openalex.org/W2093121324","https://openalex.org/W2097470741","https://openalex.org/W2104706302","https://openalex.org/W2125153556","https://openalex.org/W2130629933","https://openalex.org/W2154121591","https://openalex.org/W2160538288","https://openalex.org/W2169558892","https://openalex.org/W2541166653","https://openalex.org/W3026576704","https://openalex.org/W4238421058"],"related_works":["https://openalex.org/W4234814094","https://openalex.org/W2899602604","https://openalex.org/W2305982171","https://openalex.org/W2624110984","https://openalex.org/W2031653361","https://openalex.org/W2087364981","https://openalex.org/W2173636902","https://openalex.org/W1981619997","https://openalex.org/W4376107027","https://openalex.org/W4376106765"],"abstract_inverted_index":{"Falling":[0],"is":[1,38,71],"a":[2,47,53,61,101,109,158,188],"common":[3],"and":[4,19,42,64,91,131,142,160,164],"significant":[5],"cause":[6],"of":[7,27,46,60,82,103,113,120,127,139,162,169,187],"injury":[8],"in":[9,25,108,177],"elderly":[10,29],"adults":[11],"(&gt;65":[12],"yrs":[13],"old),":[14],"often":[15],"leading":[16],"to":[17,39,77,153],"disability":[18],"death.":[20],"In":[21],"the":[22,28,44,69,74,114,121,132,148,178],"USA,":[23],"one":[24],"three":[26],"suffers":[30],"from":[31,175,191],"fall":[32,122,189],"injuries":[33],"annually.":[34],"This":[35],"study\u2019s":[36],"purpose":[37],"develop,":[40],"optimize,":[41],"assess":[43],"efficacy":[45],"falls":[48,151],"detection":[49,123],"algorithm":[50,124,140,149],"based":[51],"upon":[52],"wireless,":[54],"wearable":[55],"sensor":[56,129],"system":[57],"(WSS)":[58],"comprised":[59],"3-axis":[62],"accelerometer":[63],"gyroscope.":[65],"For":[66],"this":[67],"study,":[68],"WSS":[70],"placed":[72],"at":[73],"chest":[75],"center":[76],"collect":[78],"real-time":[79],"motion":[80],"data":[81],"various":[83],"simulated":[84],"daily":[85,155],"activities":[86,193],"(i.e.,":[87],"walking,":[88],"running,":[89],"stepping,":[90],"falling).":[92],"Tests":[93],"were":[94],"conducted":[95],"on":[96],"36":[97],"human":[98],"subjects":[99],"with":[100,157],"total":[102],"702":[104],"different":[105],"movements":[106,156],"collected":[107],"laboratory":[110],"setting.":[111],"Half":[112],"dataset":[115,134],"was":[116,135],"used":[117,136],"for":[118,137],"development":[119],"including":[125],"investigations":[126],"critical":[128],"thresholds":[130],"remaining":[133],"assessment":[138],"sensitivity":[141,159,173],"specificity.":[143],"Experimental":[144],"results":[145,176],"show":[146],"that":[147,194],"detects":[150],"compared":[152],"other":[154,192],"specificity":[161],"96.3%":[163],"96.2%,":[165],"respectively.":[166],"The":[167],"addition":[168],"gyroscope":[170],"information":[171],"enhances":[172],"dramatically":[174],"literature":[179],"as":[180],"angular":[181],"velocity":[182],"changes":[183],"provide":[184],"further":[185],"delineation":[186],"event":[190],"may":[195],"also":[196],"experience":[197],"high":[198],"acceleration":[199],"peaks.":[200]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":12},{"year":2023,"cited_by_count":12},{"year":2022,"cited_by_count":19},{"year":2021,"cited_by_count":11},{"year":2020,"cited_by_count":23},{"year":2019,"cited_by_count":20},{"year":2018,"cited_by_count":13},{"year":2017,"cited_by_count":9},{"year":2016,"cited_by_count":10},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":1}],"updated_date":"2026-06-26T08:34:08.712188","created_date":"2025-10-10T00:00:00"}
