{"id":"https://openalex.org/W2167046862","doi":"https://doi.org/10.1109/mobhoc.2007.4428691","title":"Topological Estimation using Ultrasonic and Radio","display_name":"Topological Estimation using Ultrasonic and Radio","publication_year":2007,"publication_date":"2007-10-01","ids":{"openalex":"https://openalex.org/W2167046862","doi":"https://doi.org/10.1109/mobhoc.2007.4428691","mag":"2167046862"},"language":"en","primary_location":{"id":"doi:10.1109/mobhoc.2007.4428691","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mobhoc.2007.4428691","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2007 IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"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/A5057689148","display_name":"Yoshiyuki Nakamura","orcid":"https://orcid.org/0000-0003-0166-2658"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Yoshiyuki Nakamura","raw_affiliation_strings":["Information Technology Research Institue, AIST, Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"Information Technology Research Institue, AIST, Tokyo, Japan","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007535358","display_name":"Ry\u014dsuke Kobayashi","orcid":"https://orcid.org/0000-0001-8001-2367"},"institutions":[{"id":"https://openalex.org/I171481255","display_name":"Shibaura Institute of Technology","ror":"https://ror.org/020wjcq07","country_code":"JP","type":"education","lineage":["https://openalex.org/I171481255"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Ryosuke Kobayashi","raw_affiliation_strings":["Shibaura Institute of Technology, Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"Shibaura Institute of Technology, Tokyo, Japan","institution_ids":["https://openalex.org/I171481255"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112312709","display_name":"Masateru Minami","orcid":null},"institutions":[{"id":"https://openalex.org/I171481255","display_name":"Shibaura Institute of Technology","ror":"https://ror.org/020wjcq07","country_code":"JP","type":"education","lineage":["https://openalex.org/I171481255"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masateru Minami","raw_affiliation_strings":["Shibaura Institute of Technology, Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"Shibaura Institute of Technology, Tokyo, Japan","institution_ids":["https://openalex.org/I171481255"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5087215423","display_name":"Takuichi Nishimura","orcid":"https://orcid.org/0000-0003-1784-4624"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Takuichi Nishimura","raw_affiliation_strings":["Information Technology Research Institue, AIST, Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"Information Technology Research Institue, AIST, Tokyo, Japan","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5057689148"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.18045671,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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":0.9972000122070312,"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/T10080","display_name":"Energy Efficient Wireless Sensor Networks","score":0.9907000064849854,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/computer-science","display_name":"Computer science","score":0.7161362171173096},{"id":"https://openalex.org/keywords/face","display_name":"Face (sociological concept)","score":0.6732189655303955},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.6270740628242493},{"id":"https://openalex.org/keywords/orientation","display_name":"Orientation (vector space)","score":0.6195449829101562},{"id":"https://openalex.org/keywords/ultrasonic-sensor","display_name":"Ultrasonic sensor","score":0.5995054841041565},{"id":"https://openalex.org/keywords/estimation","display_name":"Estimation","score":0.5881806015968323},{"id":"https://openalex.org/keywords/ubiquitous-computing","display_name":"Ubiquitous computing","score":0.5558604598045349},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.5021138191223145},{"id":"https://openalex.org/keywords/service","display_name":"Service (business)","score":0.41577839851379395},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.4143655598163605},{"id":"https://openalex.org/keywords/human\u2013computer-interaction","display_name":"Human\u2013computer interaction","score":0.38048872351646423},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3671987056732178},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.20445090532302856},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.14459437131881714},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11950996518135071},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11249089241027832},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.10156139731407166},{"id":"https://openalex.org/keywords/systems-engineering","display_name":"Systems engineering","score":0.08595192432403564},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.07685565948486328}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7161362171173096},{"id":"https://openalex.org/C2779304628","wikidata":"https://www.wikidata.org/wiki/Q3503480","display_name":"Face (sociological concept)","level":2,"score":0.6732189655303955},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.6270740628242493},{"id":"https://openalex.org/C16345878","wikidata":"https://www.wikidata.org/wiki/Q107472979","display_name":"Orientation (vector space)","level":2,"score":0.6195449829101562},{"id":"https://openalex.org/C81288441","wikidata":"https://www.wikidata.org/wiki/Q20736125","display_name":"Ultrasonic sensor","level":2,"score":0.5995054841041565},{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.5881806015968323},{"id":"https://openalex.org/C172195944","wikidata":"https://www.wikidata.org/wiki/Q541265","display_name":"Ubiquitous computing","level":2,"score":0.5558604598045349},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.5021138191223145},{"id":"https://openalex.org/C2780378061","wikidata":"https://www.wikidata.org/wiki/Q25351891","display_name":"Service (business)","level":2,"score":0.41577839851379395},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.4143655598163605},{"id":"https://openalex.org/C107457646","wikidata":"https://www.wikidata.org/wiki/Q207434","display_name":"Human\u2013computer interaction","level":1,"score":0.38048872351646423},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3671987056732178},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.20445090532302856},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.14459437131881714},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11950996518135071},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11249089241027832},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.10156139731407166},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.08595192432403564},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.07685565948486328},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C36289849","wikidata":"https://www.wikidata.org/wiki/Q34749","display_name":"Social science","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C136264566","wikidata":"https://www.wikidata.org/wiki/Q159810","display_name":"Economy","level":1,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/mobhoc.2007.4428691","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mobhoc.2007.4428691","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2007 IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5699999928474426,"id":"https://metadata.un.org/sdg/11","display_name":"Sustainable cities and communities"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":5,"referenced_works":["https://openalex.org/W1558086644","https://openalex.org/W2028125626","https://openalex.org/W2073846564","https://openalex.org/W2150388519","https://openalex.org/W2160170050"],"related_works":["https://openalex.org/W2618703391","https://openalex.org/W4244076636","https://openalex.org/W2399184610","https://openalex.org/W4230176027","https://openalex.org/W2916277247","https://openalex.org/W2361945759","https://openalex.org/W1934323445","https://openalex.org/W2349331384","https://openalex.org/W2033547812","https://openalex.org/W2378058397"],"abstract_inverted_index":{"In":[0,87],"this":[1],"paper,":[2],"we":[3,94],"present":[4],"a":[5,28,39,49,69],"method":[6],"for":[7,32],"estimation":[8,67],"of":[9,27,80,91],"objects'":[10,117],"positions":[11],"and":[12,65,111],"orientations":[13],"in":[14],"an":[15,109],"indoor":[16,63],"environment.":[17],"For":[18],"ubiquitous":[19],"computing,":[20],"it":[21],"is":[22],"important":[23],"to":[24,48,101,115],"realize":[25],"provision":[26],"location-aware":[29],"information":[30,36],"service":[31],"humans.":[33],"Especially,":[34],"orientation":[35,66],"can":[37],"reflect":[38],"more":[40],"detailed":[41],"context":[42],"than":[43,83],"that":[44],"obtained":[45],"merely":[46],"according":[47],"location:":[50],"people":[51],"standing":[52],"face-to-face":[53],"or":[54],"back-to-back":[55],"have":[56,95],"vastly":[57],"different":[58],"contexts.":[59],"We":[60],"are":[61],"tackling":[62],"location":[64],"using":[68],"new":[70],"approach":[71],"called":[72],"topological":[73,92],"estimation,":[74,93],"which":[75],"specifically":[76],"examines":[77],"relative":[78],"relationships":[79],"humans":[81],"rather":[82],"their":[84],"absolute":[85],"positions.":[86],"the":[88],"initial":[89],"implementation":[90],"used":[96],"infrared":[97],"tags":[98],"as":[99],"sensors":[100],"collect":[102,116],"real-world":[103],"related":[104],"information.":[105],"This":[106],"paper":[107],"describes":[108],"ultrasonic":[110],"radio":[112],"device":[113],"system":[114],"local":[118],"relationships.":[119]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}