{"id":"https://openalex.org/W2552045561","doi":"https://doi.org/10.3390/ijgi5110211","title":"Spatial Air Index Based on Largest Empty Rectangles for Non-Flat Wireless Broadcast in Pervasive Computing","display_name":"Spatial Air Index Based on Largest Empty Rectangles for Non-Flat Wireless Broadcast in Pervasive Computing","publication_year":2016,"publication_date":"2016-11-11","ids":{"openalex":"https://openalex.org/W2552045561","doi":"https://doi.org/10.3390/ijgi5110211","mag":"2552045561"},"language":"en","primary_location":{"id":"doi:10.3390/ijgi5110211","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi5110211","pdf_url":"https://www.mdpi.com/2220-9964/5/11/211/pdf?version=1478865465","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2220-9964/5/11/211/pdf?version=1478865465","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5036843433","display_name":"Jun-Hong Shen","orcid":"https://orcid.org/0000-0002-6220-096X"},"institutions":[{"id":"https://openalex.org/I143578492","display_name":"Asia University","ror":"https://ror.org/038a1tp19","country_code":"TW","type":"education","lineage":["https://openalex.org/I143578492"]},{"id":"https://openalex.org/I184693016","display_name":"China Medical University","ror":"https://ror.org/00v408z34","country_code":"TW","type":"education","lineage":["https://openalex.org/I184693016"]},{"id":"https://openalex.org/I4210126829","display_name":"China Medical University Hospital","ror":"https://ror.org/0368s4g32","country_code":"TW","type":"healthcare","lineage":["https://openalex.org/I4210126829"]}],"countries":["TW"],"is_corresponding":true,"raw_author_name":"Jun-Hong Shen","raw_affiliation_strings":["Department of Information Communication, Asia University, Taichung 413, Taiwan","Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan"],"raw_orcid":"https://orcid.org/0000-0002-6220-096X","affiliations":[{"raw_affiliation_string":"Department of Information Communication, Asia University, Taichung 413, Taiwan","institution_ids":["https://openalex.org/I143578492"]},{"raw_affiliation_string":"Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan","institution_ids":["https://openalex.org/I4210126829","https://openalex.org/I184693016"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110708780","display_name":"Ching-Ta Lu","orcid":null},"institutions":[{"id":"https://openalex.org/I143578492","display_name":"Asia University","ror":"https://ror.org/038a1tp19","country_code":"TW","type":"education","lineage":["https://openalex.org/I143578492"]},{"id":"https://openalex.org/I184693016","display_name":"China Medical University","ror":"https://ror.org/00v408z34","country_code":"TW","type":"education","lineage":["https://openalex.org/I184693016"]},{"id":"https://openalex.org/I4210126829","display_name":"China Medical University Hospital","ror":"https://ror.org/0368s4g32","country_code":"TW","type":"healthcare","lineage":["https://openalex.org/I4210126829"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Ching-Ta Lu","raw_affiliation_strings":["Department of Information Communication, Asia University, Taichung 413, Taiwan","Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Communication, Asia University, Taichung 413, Taiwan","institution_ids":["https://openalex.org/I143578492"]},{"raw_affiliation_string":"Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan","institution_ids":["https://openalex.org/I4210126829","https://openalex.org/I184693016"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038663636","display_name":"Mu\u2010Yen Chen","orcid":"https://orcid.org/0000-0002-3945-4363"},"institutions":[{"id":"https://openalex.org/I131948415","display_name":"National Taichung University of Science and Technology","ror":"https://ror.org/05bgcav40","country_code":"TW","type":"education","lineage":["https://openalex.org/I131948415"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Mu-Yen Chen","raw_affiliation_strings":["Department of Information Management, National Taichung University of Science and Technology, Taichung 404, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Management, National Taichung University of Science and Technology, Taichung 404, Taiwan","institution_ids":["https://openalex.org/I131948415"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079400159","display_name":"Chien-Tang Mai","orcid":null},"institutions":[{"id":"https://openalex.org/I143578492","display_name":"Asia University","ror":"https://ror.org/038a1tp19","country_code":"TW","type":"education","lineage":["https://openalex.org/I143578492"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Chien-Tang Mai","raw_affiliation_strings":["Department of Information Communication, Asia University, Taichung 413, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Communication, Asia University, Taichung 413, Taiwan","institution_ids":["https://openalex.org/I143578492"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5036843433"],"corresponding_institution_ids":["https://openalex.org/I143578492","https://openalex.org/I184693016","https://openalex.org/I4210126829"],"apc_list":{"value":1400,"currency":"CHF","value_usd":1515},"apc_paid":{"value":1400,"currency":"CHF","value_usd":1515},"fwci":0.886,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.79298647,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"5","issue":"11","first_page":"211","last_page":"211"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10772","display_name":"Distributed systems and fault tolerance","score":0.9997000098228455,"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"}},"topics":[{"id":"https://openalex.org/T10772","display_name":"Distributed systems and fault tolerance","score":0.9997000098228455,"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"}},{"id":"https://openalex.org/T10742","display_name":"Peer-to-Peer Network Technologies","score":0.9991000294685364,"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"}},{"id":"https://openalex.org/T11896","display_name":"Opportunistic and Delay-Tolerant Networks","score":0.998199999332428,"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":0.8093050718307495},{"id":"https://openalex.org/keywords/window","display_name":"Window (computing)","score":0.678322970867157},{"id":"https://openalex.org/keywords/dissemination","display_name":"Dissemination","score":0.641567587852478},{"id":"https://openalex.org/keywords/spatial-query","display_name":"Spatial query","score":0.5753352046012878},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5682567358016968},{"id":"https://openalex.org/keywords/mobile-computing","display_name":"Mobile computing","score":0.559645414352417},{"id":"https://openalex.org/keywords/index","display_name":"Index (typography)","score":0.537914514541626},{"id":"https://openalex.org/keywords/location-based-service","display_name":"Location-based service","score":0.49846410751342773},{"id":"https://openalex.org/keywords/mobile-device","display_name":"Mobile device","score":0.49631601572036743},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.44471147656440735},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.4337821304798126},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2252526581287384},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.10661596059799194},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.10073643922805786},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.08134835958480835}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8093050718307495},{"id":"https://openalex.org/C2778751112","wikidata":"https://www.wikidata.org/wiki/Q835016","display_name":"Window (computing)","level":2,"score":0.678322970867157},{"id":"https://openalex.org/C101780184","wikidata":"https://www.wikidata.org/wiki/Q840576","display_name":"Dissemination","level":2,"score":0.641567587852478},{"id":"https://openalex.org/C172722865","wikidata":"https://www.wikidata.org/wiki/Q2302053","display_name":"Spatial query","level":5,"score":0.5753352046012878},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5682567358016968},{"id":"https://openalex.org/C144543869","wikidata":"https://www.wikidata.org/wiki/Q2738570","display_name":"Mobile computing","level":2,"score":0.559645414352417},{"id":"https://openalex.org/C2777382242","wikidata":"https://www.wikidata.org/wiki/Q6017816","display_name":"Index (typography)","level":2,"score":0.537914514541626},{"id":"https://openalex.org/C155292070","wikidata":"https://www.wikidata.org/wiki/Q1198122","display_name":"Location-based service","level":2,"score":0.49846410751342773},{"id":"https://openalex.org/C186967261","wikidata":"https://www.wikidata.org/wiki/Q5082128","display_name":"Mobile device","level":2,"score":0.49631601572036743},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.44471147656440735},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.4337821304798126},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2252526581287384},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.10661596059799194},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.10073643922805786},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.08134835958480835},{"id":"https://openalex.org/C192939062","wikidata":"https://www.wikidata.org/wiki/Q104840822","display_name":"Sargable","level":4,"score":0.0},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/ijgi5110211","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi5110211","pdf_url":"https://www.mdpi.com/2220-9964/5/11/211/pdf?version=1478865465","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:b968b26d199b415088dfdba05a5e59a8","is_oa":true,"landing_page_url":"https://doaj.org/article/b968b26d199b415088dfdba05a5e59a8","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":"ISPRS International Journal of Geo-Information, Vol 5, Iss 11, p 211 (2016)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2220-9964/5/11/211/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/ijgi5110211","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISPRS International Journal of Geo-Information; Volume 5; Issue 11; Pages: 211","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/ijgi5110211","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi5110211","pdf_url":"https://www.mdpi.com/2220-9964/5/11/211/pdf?version=1478865465","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1052468712","display_name":null,"funder_award_id":"MOST 105-","funder_id":"https://openalex.org/F4320322795","funder_display_name":"Ministry of Science and Technology, Taiwan"},{"id":"https://openalex.org/G1512596850","display_name":null,"funder_award_id":"MOST 105-2410-H-468-012","funder_id":"https://openalex.org/F4320322795","funder_display_name":"Ministry of Science and Technology, Taiwan"},{"id":"https://openalex.org/G3468423577","display_name":null,"funder_award_id":"MOST 105","funder_id":"https://openalex.org/F4320322795","funder_display_name":"Ministry of Science and Technology, Taiwan"},{"id":"https://openalex.org/G5288512808","display_name":null,"funder_award_id":"MOST 105-2410-H-025-015-MY2","funder_id":"https://openalex.org/F4320322795","funder_display_name":"Ministry of Science and Technology, Taiwan"}],"funders":[{"id":"https://openalex.org/F4320322795","display_name":"Ministry of Science and Technology, Taiwan","ror":"https://ror.org/02kv4zf79"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2552045561.pdf","grobid_xml":"https://content.openalex.org/works/W2552045561.grobid-xml"},"referenced_works_count":34,"referenced_works":["https://openalex.org/W201074497","https://openalex.org/W1691711714","https://openalex.org/W1986888508","https://openalex.org/W2001090360","https://openalex.org/W2003096509","https://openalex.org/W2015071036","https://openalex.org/W2017960812","https://openalex.org/W2039951548","https://openalex.org/W2055197119","https://openalex.org/W2064761827","https://openalex.org/W2066277483","https://openalex.org/W2075519551","https://openalex.org/W2088685361","https://openalex.org/W2090741711","https://openalex.org/W2110089651","https://openalex.org/W2122296645","https://openalex.org/W2123657571","https://openalex.org/W2139745589","https://openalex.org/W2149382894","https://openalex.org/W2259804647","https://openalex.org/W2260571437","https://openalex.org/W2283559776","https://openalex.org/W2294513882","https://openalex.org/W2296665263","https://openalex.org/W2409524024","https://openalex.org/W2514887721","https://openalex.org/W2566122145","https://openalex.org/W2758059375","https://openalex.org/W2976445918","https://openalex.org/W4235393959","https://openalex.org/W4244485036","https://openalex.org/W6608345896","https://openalex.org/W6696797669","https://openalex.org/W6696922023"],"related_works":["https://openalex.org/W2374084962","https://openalex.org/W4248517311","https://openalex.org/W1975293494","https://openalex.org/W2065177538","https://openalex.org/W2162195982","https://openalex.org/W2341774241","https://openalex.org/W2186730294","https://openalex.org/W2164013797","https://openalex.org/W2125093642","https://openalex.org/W2557237889"],"abstract_inverted_index":{"In":[0,50],"pervasive":[1],"computing,":[2],"location-based":[3],"services":[4],"(LBSs)":[5],"are":[6,61],"valuable":[7],"for":[8,25,122],"mobile":[9,26,34,48,64],"clients":[10,65],"based":[11],"on":[12,29],"their":[13],"current":[14],"locations.":[15],"LBSs":[16],"use":[17],"spatial":[18,45,59,87,131],"window":[19,77,93,123],"queries":[20],"to":[21,42,47,63,75,91,109],"enable":[22],"useful":[23],"applications":[24],"clients.":[27,49],"Based":[28],"skewed":[30],"access":[31,95],"patterns":[32],"of":[33,103,113],"clients,":[35],"non-flat":[36,72,97],"wireless":[37,68,98],"broadcast":[38,62,73,99,115],"has":[39],"been":[40],"shown":[41],"efficiently":[43],"disseminate":[44],"objects":[46,60],"this":[51],"paper,":[52],"we":[53,83],"consider":[54],"a":[55,67,71,81],"scenario":[56],"in":[57,70,96],"which":[58],"over":[66],"channel":[69],"manner":[74],"process":[76],"queries.":[78,124],"For":[79],"such":[80],"scenario,":[82],"propose":[84],"an":[85],"efficient":[86],"air":[88,132],"index":[89,133],"method":[90,134],"handle":[92],"query":[94],"environments.":[100],"The":[101],"concept":[102],"largest":[104],"empty":[105],"rectangles":[106],"is":[107],"used":[108],"avoid":[110],"unnecessary":[111],"examination":[112],"the":[114,119,129,136],"content,":[116],"thus":[117],"reducing":[118],"processing":[120],"time":[121],"Simulation":[125],"results":[126],"show":[127],"that":[128],"proposed":[130],"outperforms":[135],"existing":[137],"methods":[138],"under":[139],"various":[140],"settings.":[141]},"counts_by_year":[{"year":2019,"cited_by_count":2},{"year":2017,"cited_by_count":1}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2025-10-10T00:00:00"}
