{"id":"https://openalex.org/W3215845856","doi":"https://doi.org/10.1155/2021/7713884","title":"Cross Product and Partitioned Filtering-Based Graham Convex Hull for Buoy Drifting Area Demarcating","display_name":"Cross Product and Partitioned Filtering-Based Graham Convex Hull for Buoy Drifting Area Demarcating","publication_year":2021,"publication_date":"2021-11-29","ids":{"openalex":"https://openalex.org/W3215845856","doi":"https://doi.org/10.1155/2021/7713884","mag":"3215845856"},"language":"en","primary_location":{"id":"doi:10.1155/2021/7713884","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2021/7713884","pdf_url":"https://downloads.hindawi.com/journals/sp/2021/7713884.pdf","source":{"id":"https://openalex.org/S166774750","display_name":"Scientific Programming","issn_l":"1058-9244","issn":["1058-9244","1875-919X"],"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":"Scientific Programming","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/sp/2021/7713884.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100711254","display_name":"Han Xue","orcid":"https://orcid.org/0000-0002-6418-9581"},"institutions":[{"id":"https://openalex.org/I161346416","display_name":"Jimei University","ror":"https://ror.org/03hknyb50","country_code":"CN","type":"education","lineage":["https://openalex.org/I161346416"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Han Xue","raw_affiliation_strings":["College of Navigation, Jimei University, Fujian, Xiamen 361021, China"],"raw_orcid":"https://orcid.org/0000-0002-6418-9581","affiliations":[{"raw_affiliation_string":"College of Navigation, Jimei University, Fujian, Xiamen 361021, China","institution_ids":["https://openalex.org/I161346416"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101619724","display_name":"Weicheng Zhang","orcid":"https://orcid.org/0000-0002-7615-7202"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Weicheng Zhang","raw_affiliation_strings":["Lianyungang Navigation Mark Office, Jiangsu, Lianyungang 222000, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Lianyungang Navigation Mark Office, Jiangsu, Lianyungang 222000, China","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103388608","display_name":"Chao Ni","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Chao Ni","raw_affiliation_strings":["Lianyungang Navigation Mark Office, Jiangsu, Lianyungang 222000, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Lianyungang Navigation Mark Office, Jiangsu, Lianyungang 222000, China","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101214595","display_name":"Xiping Lu","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Xiping Lu","raw_affiliation_strings":["Lianyungang Navigation Mark Office, Jiangsu, Lianyungang 222000, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Lianyungang Navigation Mark Office, Jiangsu, Lianyungang 222000, China","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5100711254"],"corresponding_institution_ids":["https://openalex.org/I161346416"],"apc_list":{"value":1800,"currency":"USD","value_usd":1800},"apc_paid":{"value":1800,"currency":"USD","value_usd":1800},"fwci":0.3471,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.61730758,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":96},"biblio":{"volume":"2021","issue":null,"first_page":"1","last_page":"9"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11192","display_name":"Underwater Vehicles and Communication Systems","score":0.9894999861717224,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean 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/T11192","display_name":"Underwater Vehicles and Communication Systems","score":0.9894999861717224,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean 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/T11622","display_name":"Maritime Navigation and Safety","score":0.9815000295639038,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean 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/T12719","display_name":"Aerospace Engineering and Energy Systems","score":0.9728000164031982,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/convex-hull","display_name":"Convex hull","score":0.8251506686210632},{"id":"https://openalex.org/keywords/buoy","display_name":"Buoy","score":0.6870401501655579},{"id":"https://openalex.org/keywords/hull","display_name":"Hull","score":0.6195268034934998},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.5286391377449036},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.49779582023620605},{"id":"https://openalex.org/keywords/point","display_name":"Point (geometry)","score":0.4676964282989502},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.4441301226615906},{"id":"https://openalex.org/keywords/ellipse","display_name":"Ellipse","score":0.43980634212493896},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.40533289313316345},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.377373069524765},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.15475508570671082},{"id":"https://openalex.org/keywords/marine-engineering","display_name":"Marine engineering","score":0.12104964256286621}],"concepts":[{"id":"https://openalex.org/C206194317","wikidata":"https://www.wikidata.org/wiki/Q1138624","display_name":"Convex hull","level":3,"score":0.8251506686210632},{"id":"https://openalex.org/C2779847632","wikidata":"https://www.wikidata.org/wiki/Q30026","display_name":"Buoy","level":2,"score":0.6870401501655579},{"id":"https://openalex.org/C37423430","wikidata":"https://www.wikidata.org/wiki/Q6750281","display_name":"Hull","level":2,"score":0.6195268034934998},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.5286391377449036},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.49779582023620605},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.4676964282989502},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4441301226615906},{"id":"https://openalex.org/C74261601","wikidata":"https://www.wikidata.org/wiki/Q40112","display_name":"Ellipse","level":2,"score":0.43980634212493896},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.40533289313316345},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.377373069524765},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.15475508570671082},{"id":"https://openalex.org/C199104240","wikidata":"https://www.wikidata.org/wiki/Q118291","display_name":"Marine engineering","level":1,"score":0.12104964256286621},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1155/2021/7713884","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2021/7713884","pdf_url":"https://downloads.hindawi.com/journals/sp/2021/7713884.pdf","source":{"id":"https://openalex.org/S166774750","display_name":"Scientific Programming","issn_l":"1058-9244","issn":["1058-9244","1875-919X"],"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":"Scientific Programming","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:31f3083a202b4dca9760e9849cb408fa","is_oa":true,"landing_page_url":"https://doaj.org/article/31f3083a202b4dca9760e9849cb408fa","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":"Scientific Programming, Vol 2021 (2021)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1155/2021/7713884","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2021/7713884","pdf_url":"https://downloads.hindawi.com/journals/sp/2021/7713884.pdf","source":{"id":"https://openalex.org/S166774750","display_name":"Scientific Programming","issn_l":"1058-9244","issn":["1058-9244","1875-919X"],"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":"Scientific Programming","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Life below water","score":0.4099999964237213,"id":"https://metadata.un.org/sdg/14"}],"awards":[{"id":"https://openalex.org/G1024752577","display_name":null,"funder_award_id":"ZP2020005","funder_id":"https://openalex.org/F4320325565","funder_display_name":"Jimei University"},{"id":"https://openalex.org/G2949083755","display_name":null,"funder_award_id":"ZP2020005","funder_id":"https://openalex.org/F4320321878","funder_display_name":"Natural Science Foundation of Fujian Province"},{"id":"https://openalex.org/G7065191851","display_name":null,"funder_award_id":"2021J01819","funder_id":"https://openalex.org/F4320325565","funder_display_name":"Jimei University"},{"id":"https://openalex.org/G8155727262","display_name":null,"funder_award_id":"2021J01819","funder_id":"https://openalex.org/F4320321878","funder_display_name":"Natural Science Foundation of Fujian Province"}],"funders":[{"id":"https://openalex.org/F4320321878","display_name":"Natural Science Foundation of Fujian Province","ror":null},{"id":"https://openalex.org/F4320325565","display_name":"Jimei University","ror":"https://ror.org/03hknyb50"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3215845856.pdf","grobid_xml":"https://content.openalex.org/works/W3215845856.grobid-xml"},"referenced_works_count":12,"referenced_works":["https://openalex.org/W2357113317","https://openalex.org/W2594755130","https://openalex.org/W2946237149","https://openalex.org/W2946247720","https://openalex.org/W2950112255","https://openalex.org/W2968391919","https://openalex.org/W3092256677","https://openalex.org/W3092768451","https://openalex.org/W3120694851","https://openalex.org/W3126217072","https://openalex.org/W3135219984","https://openalex.org/W3153580631"],"related_works":["https://openalex.org/W2371136327","https://openalex.org/W2890757232","https://openalex.org/W4293234107","https://openalex.org/W4393981762","https://openalex.org/W2026418801","https://openalex.org/W2092729804","https://openalex.org/W2370549269","https://openalex.org/W2371847467","https://openalex.org/W2386824811","https://openalex.org/W2802642561"],"abstract_inverted_index":{"An":[0],"improved":[1],"Graham":[2,26],"scan":[3,27],"convex":[4,11,28,120,138,146,198,204],"hull":[5,12,29,121,139,147,199,205],"algorithm":[6,15,151,193],"is":[7,34,108,152,227,237,247],"designed":[8],"using":[9],"the":[10,17,23,31,38,42,47,53,58,62,66,71,81,119,125,134,143,162,166,171,191,197,203,209,212,219,223,233,243,252],"region":[13],"shrinkage":[14],"and":[16,94,102,124,141,170,216],"sample":[18],"selection":[19],"decision":[20],"algorithm.":[21],"In":[22],"sorting":[24],"of":[25,37,40,51,136,145,161,165,176,179,211,222,232,242,251],"algorithm,":[30],"cross-multiplication":[32],"method":[33],"used":[35,153],"instead":[36],"operation":[39],"finding":[41,52],"polar":[43,59],"angle,":[44],"which":[45],"avoids":[46],"high":[48],"computational":[49],"complexity":[50],"inverse":[54],"trigonometric":[55],"function.":[56],"When":[57],"angles":[60],"are":[61,69,77,116,122,128,184],"same,":[63],"that":[64,115,190,218,250],"is,":[65],"two":[67],"points":[68,72,101,114,127],"collinear,":[70],"close":[73],"to":[74,181,207],"each":[75],"other":[76],"deleted":[78],"directly.":[79],"Select":[80],"maximal":[82,90],"horizontal":[83,87],"ordinate":[84,88],"point,":[85,89,93],"minimal":[86,95],"longitudinal":[91,96],"coordinate":[92,97],"point.":[98],"Connect":[99],"these":[100],"obtain":[103],"lines.":[104],"The":[105,113,149,159,186,229,239],"whole":[106],"plane":[107],"divided":[109],"into":[110],"different":[111],"regions.":[112],"not":[117],"on":[118],"deleted,":[123],"redundant":[126],"removed.":[129],"This":[130],"can":[131,194],"speed":[132],"up":[133],"calculation":[135],"approximate":[137],"boundary":[140],"shorten":[142],"time":[144],"calculation.":[148,200],"proposed":[150],"for":[154],"buoy":[155,180,214,226,246],"drifting":[156,213],"area":[157,210,221,231,241],"demarcating.":[158],"offsets":[160],"geometric":[163,174],"center":[164,175],"high-frequency":[167,177],"position":[168,178,215],"point":[169],"distance":[172],"from":[173],"sinking":[182],"stone":[183],"calculated.":[185],"experimental":[187],"results":[188],"show":[189],"new":[192],"effectively":[195],"accelerate":[196],"We":[201],"use":[202],"process":[206],"compute":[208],"discover":[217],"drift":[220,230,240],"port":[224,234,244,253],"hand":[225,235,245,254],"similar.":[228,238],"buoys":[236],"greater":[248],"than":[249],"buoy.":[255]},"counts_by_year":[{"year":2024,"cited_by_count":2}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2025-10-10T00:00:00"}
