{"id":"https://openalex.org/W2891220458","doi":"https://doi.org/10.3390/ijgi7090368","title":"Critical Review of Methods to Estimate PM2.5 Concentrations within Specified Research Region","display_name":"Critical Review of Methods to Estimate PM2.5 Concentrations within Specified Research Region","publication_year":2018,"publication_date":"2018-09-07","ids":{"openalex":"https://openalex.org/W2891220458","doi":"https://doi.org/10.3390/ijgi7090368","mag":"2891220458"},"language":"en","primary_location":{"id":"doi:10.3390/ijgi7090368","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi7090368","pdf_url":"https://www.mdpi.com/2220-9964/7/9/368/pdf?version=1536313183","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/2220-9964/7/9/368/pdf?version=1536313183","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101500638","display_name":"Guangyuan Zhang","orcid":"https://orcid.org/0000-0002-5028-2291"},"institutions":[{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Guangyuan Zhang","raw_affiliation_strings":["College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China","institution_ids":["https://openalex.org/I4210165038"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057042069","display_name":"Xiaoping Rui","orcid":"https://orcid.org/0000-0002-7764-4272"},"institutions":[{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xiaoping Rui","raw_affiliation_strings":["College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China","institution_ids":["https://openalex.org/I4210165038"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5073905856","display_name":"Yonglei Fan","orcid":"https://orcid.org/0000-0002-0038-4978"},"institutions":[{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yonglei Fan","raw_affiliation_strings":["College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China","institution_ids":["https://openalex.org/I4210165038"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5057042069"],"corresponding_institution_ids":["https://openalex.org/I4210165038"],"apc_list":{"value":1700,"currency":"CHF","value_usd":1893},"apc_paid":{"value":1700,"currency":"CHF","value_usd":1893},"fwci":2.8694,"has_fulltext":true,"cited_by_count":64,"citation_normalized_percentile":{"value":0.90383097,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":"7","issue":"9","first_page":"368","last_page":"368"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10190","display_name":"Air Quality and Health Impacts","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10190","display_name":"Air Quality and Health Impacts","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"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/T12120","display_name":"Air Quality Monitoring and Forecasting","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"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/T10075","display_name":"Atmospheric chemistry and aerosols","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/measure","display_name":"Measure (data warehouse)","score":0.723821222782135},{"id":"https://openalex.org/keywords/sampling","display_name":"Sampling (signal processing)","score":0.6106423139572144},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.546176552772522},{"id":"https://openalex.org/keywords/scale","display_name":"Scale (ratio)","score":0.5354329347610474},{"id":"https://openalex.org/keywords/estimation","display_name":"Estimation","score":0.4734622836112976},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.4691635072231293},{"id":"https://openalex.org/keywords/basis","display_name":"Basis (linear algebra)","score":0.4471200704574585},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.44140633940696716},{"id":"https://openalex.org/keywords/data-science","display_name":"Data science","score":0.33017587661743164},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.2028786838054657},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.17925933003425598},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.14662843942642212},{"id":"https://openalex.org/keywords/cartography","display_name":"Cartography","score":0.13782596588134766},{"id":"https://openalex.org/keywords/systems-engineering","display_name":"Systems engineering","score":0.125943124294281}],"concepts":[{"id":"https://openalex.org/C2780009758","wikidata":"https://www.wikidata.org/wiki/Q6804172","display_name":"Measure (data warehouse)","level":2,"score":0.723821222782135},{"id":"https://openalex.org/C140779682","wikidata":"https://www.wikidata.org/wiki/Q210868","display_name":"Sampling (signal processing)","level":3,"score":0.6106423139572144},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.546176552772522},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.5354329347610474},{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.4734622836112976},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.4691635072231293},{"id":"https://openalex.org/C12426560","wikidata":"https://www.wikidata.org/wiki/Q189569","display_name":"Basis (linear algebra)","level":2,"score":0.4471200704574585},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.44140633940696716},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.33017587661743164},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.2028786838054657},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.17925933003425598},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.14662843942642212},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.13782596588134766},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.125943124294281},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/ijgi7090368","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi7090368","pdf_url":"https://www.mdpi.com/2220-9964/7/9/368/pdf?version=1536313183","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:cfd59b90520e476ba3f5e5afd8c61362","is_oa":true,"landing_page_url":"https://doaj.org/article/cfd59b90520e476ba3f5e5afd8c61362","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 7, Iss 9, p 368 (2018)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2220-9964/7/9/368/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/ijgi7090368","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","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/ijgi7090368","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi7090368","pdf_url":"https://www.mdpi.com/2220-9964/7/9/368/pdf?version=1536313183","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/G1116755995","display_name":"\u57fa\u4e8e\u6d6e\u52a8\u8f66\u5386\u53f2\u6570\u636e\u7684\u751f\u6001\u8def\u5f84\u4f18\u5316\u7b97\u6cd5\u7814\u7a76","funder_award_id":"41771478","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4483380914","display_name":null,"funder_award_id":"2017YFB0503600","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4565890747","display_name":null,"funder_award_id":"No. 2017YFB0503600","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G5699498145","display_name":null,"funder_award_id":"2017YFB0503600","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2891220458.pdf","grobid_xml":"https://content.openalex.org/works/W2891220458.grobid-xml"},"referenced_works_count":53,"referenced_works":["https://openalex.org/W65738273","https://openalex.org/W1509394031","https://openalex.org/W1647918541","https://openalex.org/W1947479241","https://openalex.org/W1953367658","https://openalex.org/W1967297182","https://openalex.org/W1969692531","https://openalex.org/W1977175344","https://openalex.org/W1978637132","https://openalex.org/W1980798976","https://openalex.org/W1980891198","https://openalex.org/W1987337512","https://openalex.org/W2008641894","https://openalex.org/W2011218133","https://openalex.org/W2019795541","https://openalex.org/W2020487351","https://openalex.org/W2028479833","https://openalex.org/W2040239281","https://openalex.org/W2046079134","https://openalex.org/W2062207119","https://openalex.org/W2063164636","https://openalex.org/W2073215590","https://openalex.org/W2078869657","https://openalex.org/W2083944525","https://openalex.org/W2085973801","https://openalex.org/W2099104989","https://openalex.org/W2110802877","https://openalex.org/W2121690346","https://openalex.org/W2123768945","https://openalex.org/W2146966090","https://openalex.org/W2155632266","https://openalex.org/W2163026457","https://openalex.org/W2168517413","https://openalex.org/W2189499426","https://openalex.org/W2297827415","https://openalex.org/W2312602772","https://openalex.org/W2342344893","https://openalex.org/W2356150852","https://openalex.org/W2389160726","https://openalex.org/W2405742917","https://openalex.org/W2526513879","https://openalex.org/W2564517107","https://openalex.org/W2567586762","https://openalex.org/W2598425991","https://openalex.org/W2788905207","https://openalex.org/W2809193403","https://openalex.org/W2887242076","https://openalex.org/W2911964244","https://openalex.org/W4298304654","https://openalex.org/W6628633436","https://openalex.org/W6655451750","https://openalex.org/W6752235766","https://openalex.org/W7073540256"],"related_works":["https://openalex.org/W4255837520","https://openalex.org/W2387011115","https://openalex.org/W4234808182","https://openalex.org/W4255628145","https://openalex.org/W2382043075","https://openalex.org/W2809151339","https://openalex.org/W2216913934","https://openalex.org/W2360673138","https://openalex.org/W2809370583","https://openalex.org/W4301447905"],"abstract_inverted_index":{"Obtaining":[0],"PM2.5":[1,17,36,46,120,145],"data":[2,54,64],"for":[3,65,76,117],"the":[4,11,14,63,66,74,78,112,119,148],"entirety":[5],"of":[6,13,35,69,80,82,103,133,150],"a":[7,26,91],"research":[8,70,125],"region":[9,68],"underlies":[10],"study":[12,105],"relationship":[15],"between":[16],"and":[18,48,59,110,131,136,139,152],"human":[19],"spatiotemporal":[20],"activity.":[21],"A":[22],"professional":[23],"sampler":[24],"with":[25],"filter":[27],"membrane":[28],"is":[29,106],"used":[30,115],"to":[31,107,130,144],"measure":[32,62],"accurate":[33],"values":[34],"at":[37,90],"single":[38],"points":[39],"in":[40,85],"space.":[41],"However,":[42],"there":[43],"are":[44],"numerous":[45],"sampling":[47],"monitoring":[49],"facilities":[50],"that":[51],"rely":[52],"on":[53,147],"from":[55],"only":[56],"representative":[57],"points,":[58],"which":[60],"cannot":[61],"whole":[67],"interest.":[71,100],"This":[72],"provides":[73],"motivation":[75],"researching":[77],"methods":[79,135],"estimation":[81,146],"particulate":[83],"matter":[84],"areas":[86],"having":[87],"fewer":[88],"monitors":[89],"special":[92],"scale,":[93],"an":[94,123],"approach":[95],"now":[96],"attracting":[97],"considerable":[98],"academic":[99],"The":[101],"aim":[102],"this":[104],"(1)":[108],"reclassify":[109],"particularize":[111],"most":[113],"frequently":[114],"approaches":[116,143],"estimating":[118],"concentrations":[121],"covering":[122],"entire":[124],"region;":[126],"(2)":[127],"list":[128],"improvements":[129],"integrations":[132],"traditional":[134],"their":[137],"applications;":[138],"(3)":[140],"compare":[141],"existing":[142],"basis":[149],"accuracy":[151],"applicability.":[153]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":9},{"year":2023,"cited_by_count":9},{"year":2022,"cited_by_count":11},{"year":2021,"cited_by_count":11},{"year":2020,"cited_by_count":8},{"year":2019,"cited_by_count":7}],"updated_date":"2026-07-23T08:03:31.855105","created_date":"2025-10-10T00:00:00"}
